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linux-7.2.3/drivers/media/platform/qcom/camss/Kconfig

@@ -0,0 +1,9 @@
+config VIDEO_QCOM_CAMSS
+	tristate "Qualcomm V4L2 Camera Subsystem driver"
+	depends on V4L_PLATFORM_DRIVERS
+	depends on VIDEO_DEV
+	depends on (ARCH_QCOM && IOMMU_DMA) || COMPILE_TEST
+	select MEDIA_CONTROLLER
+	select VIDEO_V4L2_SUBDEV_API
+	select VIDEOBUF2_DMA_SG
+	select V4L2_FWNODE

linux-7.2.3/drivers/media/platform/qcom/camss/Makefile

@@ -0,0 +1,33 @@
+# SPDX-License-Identifier: GPL-2.0-only
+# Makefile for Qualcomm CAMSS driver
+
+qcom-camss-objs += \
+		camss.o \
+		camss-csid.o \
+		camss-csid-4-1.o \
+		camss-csid-4-7.o \
+		camss-csid-340.o \
+		camss-csid-680.o \
+		camss-csid-gen2.o \
+		camss-csid-gen3.o \
+		camss-csiphy.o \
+		camss-csiphy-2ph-1-0.o \
+		camss-csiphy-3ph-1-0.o \
+		camss-format.o \
+		camss-ispif.o \
+		camss-tpg.o \
+		camss-tpg-gen1.o \
+		camss-vfe.o \
+		camss-vfe-4-1.o \
+		camss-vfe-4-7.o \
+		camss-vfe-4-8.o \
+		camss-vfe-17x.o \
+		camss-vfe-340.o \
+		camss-vfe-480.o \
+		camss-vfe-680.o \
+		camss-vfe-gen1.o \
+		camss-vfe-gen3.o \
+		camss-vfe-vbif.o \
+		camss-video.o
+
+obj-$(CONFIG_VIDEO_QCOM_CAMSS) += qcom-camss.o

linux-7.2.3/drivers/media/platform/qcom/camss/camss-csid-340.c

@@ -0,0 +1,201 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Qualcomm MSM Camera Subsystem - CSID (CSI Decoder) Module 340
+ *
+ * Copyright (c) 2025 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include <linux/completion.h>
+#include <linux/bitfield.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+
+#include "camss.h"
+#include "camss-csid.h"
+#include "camss-csid-gen2.h"
+
+#define CSID_RST_STROBES					(0x010)
+#define		CSID_RST_SW_REGS			BIT(0)
+#define		CSID_RST_IRQ				BIT(1)
+#define CSID_RST_IFE_CLK				BIT(2)
+#define		CSID_RST_PHY_CLK			BIT(3)
+#define		CSID_RST_CSID_CLK			BIT(4)
+
+#define CSID_IRQ_STATUS						(0x070)
+#define CSID_IRQ_MASK						(0x074)
+#define		CSID_IRQ_MASK_RST_DONE			BIT(0)
+#define CSID_IRQ_CLEAR						(0x078)
+#define CSID_IRQ_CMD						(0x080)
+#define		CSID_IRQ_CMD_CLEAR			BIT(0)
+
+#define CSID_CSI2_RX_CFG0					(0x100)
+#define		CSI2_RX_CFG0_NUM_ACTIVE_LANES_MASK	GENMASK(1, 0)
+#define		CSI2_RX_CFG0_DLX_INPUT_SEL_MASK		GENMASK(17, 4)
+#define		CSI2_RX_CFG0_PHY_NUM_SEL_MASK		GENMASK(21, 20)
+#define		CSI2_RX_CFG0_PHY_NUM_SEL_BASE_IDX	1
+#define		CSI2_RX_CFG0_PHY_TYPE_SEL		BIT(24)
+
+#define CSID_CSI2_RX_CFG1					(0x104)
+#define		CSI2_RX_CFG1_PACKET_ECC_CORRECTION_EN	BIT(0)
+#define		CSI2_RX_CFG1_MISR_EN			BIT(6)
+#define		CSI2_RX_CFG1_CGC_MODE			BIT(7)
+
+#define CSID_CFG0(iface)					(0x200 + 0x100 * (iface))
+#define		CSID_CFG0_BYTE_CNTR_EN			BIT(0)
+#define		CSID_CFG0_TIMESTAMP_EN			BIT(1)
+#define		CSID_CFG0_DECODE_FORMAT_MASK		GENMASK(15, 12)
+#define		CSID_CFG0_DECODE_FORMAT_NOP		CSID_CFG0_DECODE_FORMAT_MASK
+#define		CSID_CFG0_DT_MASK			GENMASK(21, 16)
+#define		CSID_CFG0_VC_MASK			GENMASK(23, 22)
+#define		CSID_CFG0_DTID_MASK			GENMASK(28, 27)
+#define		CSID_CFG0_ENABLE			BIT(31)
+
+#define CSID_CTRL(iface)					(0x208 + 0x100 * (iface))
+#define CSID_CTRL_HALT_AT_FRAME_BOUNDARY		0
+#define CSID_CTRL_RESUME_AT_FRAME_BOUNDARY		1
+
+enum csid_iface {
+	CSID_IFACE_PIX,
+	CSID_IFACE_RDI0,
+	CSID_IFACE_RDI1,
+	CSID_IFACE_RDI2,
+};
+
+static enum csid_iface csid_port_iface_map[MSM_CSID_MAX_SRC_STREAMS] = {
+	[0] = CSID_IFACE_RDI0,
+	[1] = CSID_IFACE_RDI1,
+	[2] = CSID_IFACE_RDI2,
+	[3] = CSID_IFACE_PIX,
+};
+
+static void __csid_configure_rx(struct csid_device *csid, struct csid_phy_config *phy)
+{
+	u32 val;
+
+	val = FIELD_PREP(CSI2_RX_CFG0_NUM_ACTIVE_LANES_MASK, phy->lane_cnt - 1);
+	val |= FIELD_PREP(CSI2_RX_CFG0_DLX_INPUT_SEL_MASK, phy->lane_assign);
+	val |= FIELD_PREP(CSI2_RX_CFG0_PHY_NUM_SEL_MASK,
+			  phy->csiphy_id + CSI2_RX_CFG0_PHY_NUM_SEL_BASE_IDX);
+	writel_relaxed(val, csid->base + CSID_CSI2_RX_CFG0);
+
+	val = CSI2_RX_CFG1_PACKET_ECC_CORRECTION_EN;
+	writel_relaxed(val, csid->base + CSID_CSI2_RX_CFG1);
+}
+
+static void __csid_configure_stream(struct csid_device *csid, u8 enable, u8 port, u8 vc)
+{
+	struct v4l2_mbus_framefmt *input_format = &csid->fmt[MSM_CSID_PAD_FIRST_SRC + port];
+	const struct csid_format_info *format = csid_get_fmt_entry(csid->res->formats->formats,
+								   csid->res->formats->nformats,
+								   input_format->code);
+	enum csid_iface iface = csid_port_iface_map[port];
+
+	u8 dt_id;
+	u32 val;
+
+	/*
+	 * DT_ID is a two bit bitfield that is concatenated with
+	 * the four least significant bits of the five bit VC
+	 * bitfield to generate an internal CID value.
+	 *
+	 * CSID_CFG0(port)
+	 * DT_ID : 28:27
+	 * VC    : 26:22
+	 * DT    : 21:16
+	 *
+	 * CID   : VC 3:0 << 2 | DT_ID 1:0
+	 */
+	dt_id = port & 0x03;
+
+	if (iface == CSID_IFACE_PIX)
+		val = FIELD_PREP(CSID_CFG0_DECODE_FORMAT_MASK, format->decode_format);
+	else /* RDI is raw, no decoding */
+		val = CSID_CFG0_DECODE_FORMAT_NOP;
+
+	val |= FIELD_PREP(CSID_CFG0_DT_MASK, format->data_type);
+	val |= FIELD_PREP(CSID_CFG0_VC_MASK, vc);
+	val |= FIELD_PREP(CSID_CFG0_DTID_MASK, dt_id);
+
+	if (enable)
+		val |= CSID_CFG0_ENABLE;
+
+	dev_dbg(csid->camss->dev, "CSID%u: Stream %s (dt:0x%x df=0x%x port=%u vc=%u)\n",
+		csid->id, enable ? "enable" : "disable", format->data_type,
+		format->decode_format, port, vc);
+
+	writel_relaxed(val, csid->base + CSID_CFG0(iface));
+	writel_relaxed(enable, csid->base + CSID_CTRL(iface));
+}
+
+static void csid_configure_streams(struct csid_device *csid, u8 enable)
+{
+	int i;
+
+	__csid_configure_rx(csid, &csid->phy);
+
+	for (i = 0; i < MSM_CSID_MAX_SRC_STREAMS; i++) {
+		if (csid->phy.en_vc & BIT(i))
+			__csid_configure_stream(csid, !!enable, i, 0);
+	}
+}
+
+static int csid_reset(struct csid_device *csid)
+{
+	unsigned long time;
+
+	writel_relaxed(CSID_IRQ_MASK_RST_DONE, csid->base + CSID_IRQ_MASK);
+	writel_relaxed(CSID_IRQ_MASK_RST_DONE, csid->base + CSID_IRQ_CLEAR);
+	writel_relaxed(CSID_IRQ_CMD_CLEAR, csid->base + CSID_IRQ_CMD);
+
+	reinit_completion(&csid->reset_complete);
+
+	/* Reset with registers preserved */
+	writel(CSID_RST_IRQ | CSID_RST_IFE_CLK | CSID_RST_PHY_CLK | CSID_RST_CSID_CLK,
+	       csid->base + CSID_RST_STROBES);
+
+	time = wait_for_completion_timeout(&csid->reset_complete,
+					   msecs_to_jiffies(CSID_RESET_TIMEOUT_MS));
+	if (!time) {
+		dev_err(csid->camss->dev, "CSID%u: reset timeout\n", csid->id);
+		return -EIO;
+	}
+
+	dev_dbg(csid->camss->dev, "CSID%u: reset done\n", csid->id);
+
+	return 0;
+}
+
+static irqreturn_t csid_isr(int irq, void *dev)
+{
+	struct csid_device *csid = dev;
+	u32 val;
+
+	val = readl_relaxed(csid->base + CSID_IRQ_STATUS);
+	writel_relaxed(val, csid->base + CSID_IRQ_CLEAR);
+	writel_relaxed(CSID_IRQ_CMD_CLEAR, csid->base + CSID_IRQ_CMD);
+
+	if (val & CSID_IRQ_MASK_RST_DONE)
+		complete(&csid->reset_complete);
+	else
+		dev_warn_ratelimited(csid->camss->dev, "Spurious CSID interrupt\n");
+
+	return IRQ_HANDLED;
+}
+
+static int csid_configure_testgen_pattern(struct csid_device *csid, s32 val)
+{
+	return -EOPNOTSUPP; /* Not part of CSID */
+}
+
+static void csid_subdev_init(struct csid_device *csid) {}
+
+const struct csid_hw_ops csid_ops_340 = {
+	.configure_testgen_pattern = csid_configure_testgen_pattern,
+	.configure_stream = csid_configure_streams,
+	.hw_version = csid_hw_version,
+	.isr = csid_isr,
+	.reset = csid_reset,
+	.src_pad_code = csid_src_pad_code,
+	.subdev_init = csid_subdev_init,
+};

linux-7.2.3/drivers/media/platform/qcom/camss/camss-csid-4-1.c

@@ -0,0 +1,187 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * camss-csid-4-1.c
+ *
+ * Qualcomm MSM Camera Subsystem - CSID (CSI Decoder) Module
+ *
+ * Copyright (C) 2020 Linaro Ltd.
+ */
+
+#include <linux/completion.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+
+#include "camss-csid.h"
+#include "camss-csid-gen1.h"
+#include "camss.h"
+
+#define CAMSS_CSID_CORE_CTRL_0		0x004
+#define CAMSS_CSID_CORE_CTRL_1		0x008
+#define CAMSS_CSID_RST_CMD		0x00c
+#define CAMSS_CSID_CID_LUT_VC_n(n)	(0x010 + 0x4 * (n))
+#define CAMSS_CSID_CID_n_CFG(n)		(0x020 + 0x4 * (n))
+#define CAMSS_CSID_CID_n_CFG_ISPIF_EN	BIT(0)
+#define CAMSS_CSID_CID_n_CFG_RDI_EN	BIT(1)
+#define CAMSS_CSID_CID_n_CFG_DECODE_FORMAT_SHIFT	4
+#define CAMSS_CSID_CID_n_CFG_PLAIN_FORMAT_8		(PLAIN_FORMAT_PLAIN8 << 8)
+#define CAMSS_CSID_CID_n_CFG_PLAIN_FORMAT_16		(PLAIN_FORMAT_PLAIN16 << 8)
+#define CAMSS_CSID_CID_n_CFG_PLAIN_ALIGNMENT_LSB	(0 << 9)
+#define CAMSS_CSID_CID_n_CFG_PLAIN_ALIGNMENT_MSB	(1 << 9)
+#define CAMSS_CSID_CID_n_CFG_RDI_MODE_RAW_DUMP		(0 << 10)
+#define CAMSS_CSID_CID_n_CFG_RDI_MODE_PLAIN_PACKING	(1 << 10)
+#define CAMSS_CSID_IRQ_CLEAR_CMD	0x060
+#define CAMSS_CSID_IRQ_MASK		0x064
+#define CAMSS_CSID_IRQ_STATUS		0x068
+#define CAMSS_CSID_TG_CTRL		0x0a0
+#define CAMSS_CSID_TG_CTRL_DISABLE	0xa06436
+#define CAMSS_CSID_TG_CTRL_ENABLE	0xa06437
+#define CAMSS_CSID_TG_VC_CFG		0x0a4
+#define CAMSS_CSID_TG_VC_CFG_H_BLANKING		0x3ff
+#define CAMSS_CSID_TG_VC_CFG_V_BLANKING		0x7f
+#define CAMSS_CSID_TG_DT_n_CGG_0(n)	(0x0ac + 0xc * (n))
+#define CAMSS_CSID_TG_DT_n_CGG_1(n)	(0x0b0 + 0xc * (n))
+#define CAMSS_CSID_TG_DT_n_CGG_2(n)	(0x0b4 + 0xc * (n))
+
+static void csid_configure_stream(struct csid_device *csid, u8 enable)
+{
+	struct csid_testgen_config *tg = &csid->testgen;
+	u32 val;
+
+	if (enable) {
+		struct v4l2_mbus_framefmt *input_format;
+		const struct csid_format_info *format;
+		u8 vc = 0; /* Virtual Channel 0 */
+		u8 cid = vc * 4; /* id of Virtual Channel and Data Type set */
+		u8 dt_shift;
+
+		if (tg->enabled) {
+			/* Config Test Generator */
+			u32 num_lines, num_bytes_per_line;
+
+			input_format = &csid->fmt[MSM_CSID_PAD_SRC];
+			format = csid_get_fmt_entry(csid->res->formats->formats,
+						    csid->res->formats->nformats,
+						    input_format->code);
+			num_bytes_per_line = input_format->width * format->bpp * format->spp / 8;
+			num_lines = input_format->height;
+
+			/* 31:24 V blank, 23:13 H blank, 3:2 num of active DT */
+			/* 1:0 VC */
+			val = ((CAMSS_CSID_TG_VC_CFG_V_BLANKING & 0xff) << 24) |
+				  ((CAMSS_CSID_TG_VC_CFG_H_BLANKING & 0x7ff) << 13);
+			writel_relaxed(val, csid->base + CAMSS_CSID_TG_VC_CFG);
+
+			/* 28:16 bytes per lines, 12:0 num of lines */
+			val = ((num_bytes_per_line & 0x1fff) << 16) |
+				  (num_lines & 0x1fff);
+			writel_relaxed(val, csid->base + CAMSS_CSID_TG_DT_n_CGG_0(0));
+
+			/* 5:0 data type */
+			val = format->data_type;
+			writel_relaxed(val, csid->base + CAMSS_CSID_TG_DT_n_CGG_1(0));
+
+			/* 2:0 output test pattern */
+			val = tg->mode - 1;
+			writel_relaxed(val, csid->base + CAMSS_CSID_TG_DT_n_CGG_2(0));
+		} else {
+			struct csid_phy_config *phy = &csid->phy;
+
+			input_format = &csid->fmt[MSM_CSID_PAD_SINK];
+			format = csid_get_fmt_entry(csid->res->formats->formats,
+						    csid->res->formats->nformats,
+						    input_format->code);
+
+			val = phy->lane_cnt - 1;
+			val |= phy->lane_assign << 4;
+
+			writel_relaxed(val, csid->base + CAMSS_CSID_CORE_CTRL_0);
+
+			val = phy->csiphy_id << 17;
+			val |= 0x9;
+
+			writel_relaxed(val, csid->base + CAMSS_CSID_CORE_CTRL_1);
+		}
+
+		/* Config LUT */
+
+		dt_shift = (cid % 4) * 8;
+		val = readl_relaxed(csid->base + CAMSS_CSID_CID_LUT_VC_n(vc));
+		val &= ~(0xff << dt_shift);
+		val |= format->data_type << dt_shift;
+		writel_relaxed(val, csid->base + CAMSS_CSID_CID_LUT_VC_n(vc));
+
+		val = CAMSS_CSID_CID_n_CFG_ISPIF_EN;
+		val |= CAMSS_CSID_CID_n_CFG_RDI_EN;
+		val |= format->decode_format << CAMSS_CSID_CID_n_CFG_DECODE_FORMAT_SHIFT;
+		val |= CAMSS_CSID_CID_n_CFG_RDI_MODE_RAW_DUMP;
+		writel_relaxed(val, csid->base + CAMSS_CSID_CID_n_CFG(cid));
+
+		if (tg->enabled) {
+			val = CAMSS_CSID_TG_CTRL_ENABLE;
+			writel_relaxed(val, csid->base + CAMSS_CSID_TG_CTRL);
+		}
+	} else {
+		if (tg->enabled) {
+			val = CAMSS_CSID_TG_CTRL_DISABLE;
+			writel_relaxed(val, csid->base + CAMSS_CSID_TG_CTRL);
+		}
+	}
+}
+
+static int csid_configure_testgen_pattern(struct csid_device *csid, s32 val)
+{
+	if (val > 0 && val <= csid->testgen.nmodes)
+		csid->testgen.mode = val;
+
+	return 0;
+}
+
+static irqreturn_t csid_isr(int irq, void *dev)
+{
+	struct csid_device *csid = dev;
+	u32 value;
+
+	value = readl_relaxed(csid->base + CAMSS_CSID_IRQ_STATUS);
+	writel_relaxed(value, csid->base + CAMSS_CSID_IRQ_CLEAR_CMD);
+
+	if ((value >> 11) & 0x1)
+		complete(&csid->reset_complete);
+
+	return IRQ_HANDLED;
+}
+
+static int csid_reset(struct csid_device *csid)
+{
+	unsigned long time;
+
+	reinit_completion(&csid->reset_complete);
+
+	writel_relaxed(0x7fff, csid->base + CAMSS_CSID_RST_CMD);
+
+	time = wait_for_completion_timeout(&csid->reset_complete,
+					   msecs_to_jiffies(CSID_RESET_TIMEOUT_MS));
+	if (!time) {
+		dev_err(csid->camss->dev, "CSID reset timeout\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static void csid_subdev_init(struct csid_device *csid)
+{
+	csid->testgen.modes = csid_testgen_modes;
+	csid->testgen.nmodes = CSID_PAYLOAD_MODE_NUM_SUPPORTED_GEN1;
+}
+
+const struct csid_hw_ops csid_ops_4_1 = {
+	.configure_stream = csid_configure_stream,
+	.configure_testgen_pattern = csid_configure_testgen_pattern,
+	.hw_version = csid_hw_version,
+	.isr = csid_isr,
+	.reset = csid_reset,
+	.src_pad_code = csid_src_pad_code,
+	.subdev_init = csid_subdev_init,
+};

linux-7.2.3/drivers/media/platform/qcom/camss/camss-csid-4-7.c

@@ -0,0 +1,212 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * camss-csid-4-7.c
+ *
+ * Qualcomm MSM Camera Subsystem - CSID (CSI Decoder) Module
+ *
+ * Copyright (C) 2020 Linaro Ltd.
+ */
+#include <linux/completion.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+
+#include "camss-csid.h"
+#include "camss-csid-gen1.h"
+#include "camss.h"
+
+#define CAMSS_CSID_CORE_CTRL_0		0x004
+#define CAMSS_CSID_CORE_CTRL_1		0x008
+#define CAMSS_CSID_RST_CMD		0x010
+#define CAMSS_CSID_CID_LUT_VC_n(n)	(0x014 + 0x4 * (n))
+#define CAMSS_CSID_CID_n_CFG(n)		(0x024 + 0x4 * (n))
+#define CAMSS_CSID_CID_n_CFG_ISPIF_EN	BIT(0)
+#define CAMSS_CSID_CID_n_CFG_RDI_EN	BIT(1)
+#define CAMSS_CSID_CID_n_CFG_DECODE_FORMAT_SHIFT	4
+#define CAMSS_CSID_CID_n_CFG_PLAIN_FORMAT_8		(PLAIN_FORMAT_PLAIN8 << 8)
+#define CAMSS_CSID_CID_n_CFG_PLAIN_FORMAT_16		(PLAIN_FORMAT_PLAIN16 << 8)
+#define CAMSS_CSID_CID_n_CFG_PLAIN_ALIGNMENT_LSB	(0 << 9)
+#define CAMSS_CSID_CID_n_CFG_PLAIN_ALIGNMENT_MSB	(1 << 9)
+#define CAMSS_CSID_CID_n_CFG_RDI_MODE_RAW_DUMP		(0 << 10)
+#define CAMSS_CSID_CID_n_CFG_RDI_MODE_PLAIN_PACKING	(1 << 10)
+#define CAMSS_CSID_IRQ_CLEAR_CMD	0x064
+#define CAMSS_CSID_IRQ_MASK		0x068
+#define CAMSS_CSID_IRQ_STATUS		0x06c
+#define CAMSS_CSID_TG_CTRL		0x0a8
+#define CAMSS_CSID_TG_CTRL_DISABLE	0xa06436
+#define CAMSS_CSID_TG_CTRL_ENABLE	0xa06437
+#define CAMSS_CSID_TG_VC_CFG		0x0ac
+#define CAMSS_CSID_TG_VC_CFG_H_BLANKING		0x3ff
+#define CAMSS_CSID_TG_VC_CFG_V_BLANKING		0x7f
+#define CAMSS_CSID_TG_DT_n_CGG_0(n)	(0x0b4 + 0xc * (n))
+#define CAMSS_CSID_TG_DT_n_CGG_1(n)	(0x0b8 + 0xc * (n))
+#define CAMSS_CSID_TG_DT_n_CGG_2(n)	(0x0bc + 0xc * (n))
+
+static void csid_configure_stream(struct csid_device *csid, u8 enable)
+{
+	struct csid_testgen_config *tg = &csid->testgen;
+	u32 sink_code = csid->fmt[MSM_CSID_PAD_SINK].code;
+	u32 src_code = csid->fmt[MSM_CSID_PAD_SRC].code;
+	u32 val;
+
+	if (enable) {
+		struct v4l2_mbus_framefmt *input_format;
+		const struct csid_format_info *format;
+		u8 vc = 0; /* Virtual Channel 0 */
+		u8 cid = vc * 4; /* id of Virtual Channel and Data Type set */
+		u8 dt_shift;
+
+		if (tg->enabled) {
+			/* Config Test Generator */
+			u32 num_bytes_per_line, num_lines;
+
+			input_format = &csid->fmt[MSM_CSID_PAD_SRC];
+			format = csid_get_fmt_entry(csid->res->formats->formats,
+						    csid->res->formats->nformats,
+						    input_format->code);
+			num_bytes_per_line = input_format->width * format->bpp * format->spp / 8;
+			num_lines = input_format->height;
+
+			/* 31:24 V blank, 23:13 H blank, 3:2 num of active DT */
+			/* 1:0 VC */
+			val = ((CAMSS_CSID_TG_VC_CFG_V_BLANKING & 0xff) << 24) |
+				  ((CAMSS_CSID_TG_VC_CFG_H_BLANKING & 0x7ff) << 13);
+			writel_relaxed(val, csid->base + CAMSS_CSID_TG_VC_CFG);
+
+			/* 28:16 bytes per lines, 12:0 num of lines */
+			val = ((num_bytes_per_line & 0x1fff) << 16) |
+				  (num_lines & 0x1fff);
+			writel_relaxed(val, csid->base + CAMSS_CSID_TG_DT_n_CGG_0(0));
+
+			/* 5:0 data type */
+			val = format->data_type;
+			writel_relaxed(val, csid->base + CAMSS_CSID_TG_DT_n_CGG_1(0));
+
+			/* 2:0 output test pattern */
+			val = tg->mode - 1;
+			writel_relaxed(val, csid->base + CAMSS_CSID_TG_DT_n_CGG_2(0));
+		} else {
+			struct csid_phy_config *phy = &csid->phy;
+
+			input_format = &csid->fmt[MSM_CSID_PAD_SINK];
+			format = csid_get_fmt_entry(csid->res->formats->formats,
+						    csid->res->formats->nformats,
+						    input_format->code);
+
+			val = phy->lane_cnt - 1;
+			val |= phy->lane_assign << 4;
+
+			writel_relaxed(val, csid->base + CAMSS_CSID_CORE_CTRL_0);
+
+			val = phy->csiphy_id << 17;
+			val |= 0x9;
+
+			writel_relaxed(val, csid->base + CAMSS_CSID_CORE_CTRL_1);
+		}
+
+		/* Config LUT */
+
+		dt_shift = (cid % 4) * 8;
+
+		val = readl_relaxed(csid->base + CAMSS_CSID_CID_LUT_VC_n(vc));
+		val &= ~(0xff << dt_shift);
+		val |= format->data_type << dt_shift;
+		writel_relaxed(val, csid->base + CAMSS_CSID_CID_LUT_VC_n(vc));
+
+		val = CAMSS_CSID_CID_n_CFG_ISPIF_EN;
+		val |= CAMSS_CSID_CID_n_CFG_RDI_EN;
+		val |= format->decode_format << CAMSS_CSID_CID_n_CFG_DECODE_FORMAT_SHIFT;
+		val |= CAMSS_CSID_CID_n_CFG_RDI_MODE_RAW_DUMP;
+
+		if ((sink_code == MEDIA_BUS_FMT_SBGGR10_1X10 &&
+		     src_code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE) ||
+		    (sink_code == MEDIA_BUS_FMT_Y10_1X10 &&
+		     src_code == MEDIA_BUS_FMT_Y10_2X8_PADHI_LE)) {
+			val |= CAMSS_CSID_CID_n_CFG_RDI_MODE_PLAIN_PACKING;
+			val |= CAMSS_CSID_CID_n_CFG_PLAIN_FORMAT_16;
+			val |= CAMSS_CSID_CID_n_CFG_PLAIN_ALIGNMENT_LSB;
+		}
+
+		writel_relaxed(val, csid->base + CAMSS_CSID_CID_n_CFG(cid));
+
+		if (tg->enabled) {
+			val = CAMSS_CSID_TG_CTRL_ENABLE;
+			writel_relaxed(val, csid->base + CAMSS_CSID_TG_CTRL);
+		}
+	} else {
+		if (tg->enabled) {
+			val = CAMSS_CSID_TG_CTRL_DISABLE;
+			writel_relaxed(val, csid->base + CAMSS_CSID_TG_CTRL);
+		}
+	}
+}
+
+static int csid_configure_testgen_pattern(struct csid_device *csid, s32 val)
+{
+	if (val > 0 && val <= csid->testgen.nmodes)
+		csid->testgen.mode = val;
+
+	return 0;
+}
+
+/*
+ * isr - CSID module interrupt service routine
+ * @irq: Interrupt line
+ * @dev: CSID device
+ *
+ * Return IRQ_HANDLED on success
+ */
+static irqreturn_t csid_isr(int irq, void *dev)
+{
+	struct csid_device *csid = dev;
+	u32 value;
+
+	value = readl_relaxed(csid->base + CAMSS_CSID_IRQ_STATUS);
+	writel_relaxed(value, csid->base + CAMSS_CSID_IRQ_CLEAR_CMD);
+
+	if ((value >> 11) & 0x1)
+		complete(&csid->reset_complete);
+
+	return IRQ_HANDLED;
+}
+
+/*
+ * csid_reset - Trigger reset on CSID module and wait to complete
+ * @csid: CSID device
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+static int csid_reset(struct csid_device *csid)
+{
+	unsigned long time;
+
+	reinit_completion(&csid->reset_complete);
+
+	writel_relaxed(0x7fff, csid->base + CAMSS_CSID_RST_CMD);
+
+	time = wait_for_completion_timeout(&csid->reset_complete,
+					   msecs_to_jiffies(CSID_RESET_TIMEOUT_MS));
+	if (!time) {
+		dev_err(csid->camss->dev, "CSID reset timeout\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static void csid_subdev_init(struct csid_device *csid)
+{
+	csid->testgen.modes = csid_testgen_modes;
+	csid->testgen.nmodes = CSID_PAYLOAD_MODE_NUM_SUPPORTED_GEN1;
+}
+
+const struct csid_hw_ops csid_ops_4_7 = {
+	.configure_stream = csid_configure_stream,
+	.configure_testgen_pattern = csid_configure_testgen_pattern,
+	.hw_version = csid_hw_version,
+	.isr = csid_isr,
+	.reset = csid_reset,
+	.src_pad_code = csid_src_pad_code,
+	.subdev_init = csid_subdev_init,
+};

linux-7.2.3/drivers/media/platform/qcom/camss/camss-csid-680.c

@@ -0,0 +1,434 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Qualcomm MSM Camera Subsystem - CSID (CSI Decoder) Module
+ *
+ * Copyright (C) 2020-2025 Linaro Ltd.
+ */
+#include <linux/completion.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+
+#include "camss.h"
+#include "camss-csid.h"
+#include "camss-csid-gen2.h"
+
+#define CSID_TOP_IO_PATH_CFG0(csid)				(0x4 * (csid))
+#define		CSID_TOP_IO_PATH_CFG0_INTERNAL_CSID		BIT(0)
+#define		CSID_TOP_IO_PATH_CFG0_SFE_0			BIT(1)
+#define		CSID_TOP_IO_PATH_CFG0_SFE_1			GENMASK(1, 0)
+#define		CSID_TOP_IO_PATH_CFG0_SBI_0			BIT(4)
+#define		CSID_TOP_IO_PATH_CFG0_SBI_1			GENMASK(3, 0)
+#define		CSID_TOP_IO_PATH_CFG0_SBI_2			GENMASK(3, 1)
+#define		CSID_TOP_IO_PATH_CFG0_OUTPUT_IFE_EN		BIT(8)
+#define		CSID_TOP_IO_PATH_CFG0_SFE_OFFLINE_EN		BIT(12)
+
+#define CSID_RESET_CMD						0x10
+#define		CSID_RESET_CMD_HW_RESET				BIT(0)
+#define		CSID_RESET_CMD_SW_RESET				BIT(1)
+#define		CSID_RESET_CMD_IRQ_CTRL				BIT(2)
+
+#define CSID_IRQ_CMD						0x14
+#define		CSID_IRQ_CMD_CLEAR				BIT(0)
+#define		CSID_IRQ_CMD_SET				BIT(4)
+
+#define CSID_REG_UPDATE_CMD					0x18
+
+#define CSID_CSI2_RDIN_IRQ_STATUS(rdi)					(0xec + 0x10 * (rdi))
+#define		CSID_CSI2_RDIN_CCIF_VIOLATION				BIT(29)
+#define		CSID_CSI2_RDIN_SENSOR_SWITCH_OUT_OF_SYNC_FRAME_DROP	BIT(28)
+#define		CSID_CSI2_RDIN_ERROR_REC_WIDTH_VIOLATION		BIT(27)
+#define		CSID_CSI2_RDIN_ERROR_REC_HEIGHT_VIOLATION		BIT(26)
+#define		CSID_CSI2_RDIN_BATCH_END_MISSING_VIOLATION		BIT(25)
+#define		CSID_CSI2_RDIN_ILLEGAL_BATCH_ID_IRQ			BIT(24)
+#define		CSID_CSI2_RDIN_RUP_DONE					BIT(23)
+#define		CSID_CSI2_RDIN_CAMIF_EPOCH_1_IRQ			BIT(22)
+#define		CSID_CSI2_RDIN_CAMIF_EPOCH_0_IRQ			BIT(21)
+#define		CSID_CSI2_RDIN_ERROR_REC_OVERFLOW_IRQ			BIT(19)
+#define		CSID_CSI2_RDIN_ERROR_REC_FRAME_DROP			BIT(18)
+#define		CSID_CSI2_RDIN_VCDT_GRP_CHANG				BIT(17)
+#define		CSID_CSI2_RDIN_VCDT_GRP_0_SEL				BIT(16)
+#define		CSID_CSI2_RDIN_VCDT_GRP_1_SEL				BIT(15)
+#define		CSID_CSI2_RDIN_ERROR_LINE_COUNT				BIT(14)
+#define		CSID_CSI2_RDIN_ERROR_PIX_COUNT				BIT(13)
+#define		CSID_CSI2_RDIN_INFO_INPUT_SOF				BIT(12)
+#define		CSID_CSI2_RDIN_INFO_INPUT_SOL				BIT(11)
+#define		CSID_CSI2_RDIN_INFO_INPUT_EOL				BIT(10)
+#define		CSID_CSI2_RDIN_INFO_INPUT_EOF				BIT(9)
+#define		CSID_CSI2_RDIN_INFO_FRAME_DROP_SOF			BIT(8)
+#define		CSID_CSI2_RDIN_INFO_FRAME_DROP_SOL			BIT(7)
+#define		CSID_CSI2_RDIN_INFO_FRAME_DROP_EOL			BIT(6)
+#define		CSID_CSI2_RDIN_INFO_FRAME_DROP_EOF			BIT(5)
+#define		CSID_CSI2_RDIN_INFO_CAMIF_SOF				BIT(4)
+#define		CSID_CSI2_RDIN_INFO_CAMIF_EOF				BIT(3)
+#define		CSID_CSI2_RDIN_INFO_FIFO_OVERFLOW			BIT(2)
+#define		CSID_CSI2_RDIN_RES1					BIT(1)
+#define		CSID_CSI2_RDIN_RES0					BIT(0)
+
+#define CSID_CSI2_RDIN_IRQ_MASK(rdi)				(0xf0 + 0x10 * (rdi))
+#define CSID_CSI2_RDIN_IRQ_CLEAR(rdi)				(0xf4 + 0x10 * (rdi))
+#define CSID_CSI2_RDIN_IRQ_SET(rdi)				(0xf8 + 0x10 * (rdi))
+
+#define CSID_TOP_IRQ_STATUS					0x7c
+#define CSID_TOP_IRQ_MASK					0x80
+#define CSID_TOP_IRQ_CLEAR					0x84
+#define		CSID_TOP_IRQ_RESET				BIT(0)
+#define		CSID_TOP_IRQ_RX					BIT(2)
+#define		CSID_TOP_IRQ_LONG_PKT(rdi)			(BIT(8) << (rdi))
+#define		CSID_TOP_IRQ_BUF_DONE				BIT(13)
+
+#define CSID_BUF_DONE_IRQ_STATUS				0x8c
+#define	BUF_DONE_IRQ_STATUS_RDI_OFFSET				(csid_is_lite(csid) ? 1 : 14)
+#define CSID_BUF_DONE_IRQ_MASK					0x90
+#define CSID_BUF_DONE_IRQ_CLEAR					0x94
+
+#define CSID_CSI2_RX_IRQ_STATUS					0x9c
+#define CSID_CSI2_RX_IRQ_MASK					0xa0
+#define CSID_CSI2_RX_IRQ_CLEAR					0xa4
+
+#define CSID_RESET_CFG						0xc
+#define		CSID_RESET_CFG_MODE_IMMEDIATE			BIT(0)
+#define		CSID_RESET_CFG_LOCATION_COMPLETE		BIT(4)
+
+#define CSID_CSI2_RDI_IRQ_STATUS(rdi)				(0xec + 0x10 * (rdi))
+#define CSID_CSI2_RDI_IRQ_MASK(rdi)				(0xf0 + 0x10 * (rdi))
+#define CSID_CSI2_RDI_IRQ_CLEAR(rdi)				(0xf4 + 0x10 * (rdi))
+
+#define CSID_CSI2_RX_CFG0					0x200
+#define		CSI2_RX_CFG0_NUM_ACTIVE_LANES			0
+#define		CSI2_RX_CFG0_DL0_INPUT_SEL			4
+#define		CSI2_RX_CFG0_DL1_INPUT_SEL			8
+#define		CSI2_RX_CFG0_DL2_INPUT_SEL			12
+#define		CSI2_RX_CFG0_DL3_INPUT_SEL			16
+#define		CSI2_RX_CFG0_PHY_NUM_SEL			20
+#define		CSI2_RX_CFG0_PHY_SEL_BASE_IDX			1
+#define		CSI2_RX_CFG0_PHY_TYPE_SEL			24
+#define		CSI2_RX_CFG0_TPG_MUX_EN				BIT(27)
+#define		CSI2_RX_CFG0_TPG_MUX_SEL			GENMASK(29, 28)
+
+#define CSID_CSI2_RX_CFG1					0x204
+#define		CSI2_RX_CFG1_PACKET_ECC_CORRECTION_EN		BIT(0)
+#define		CSI2_RX_CFG1_DE_SCRAMBLE_EN			BIT(1)
+#define		CSI2_RX_CFG1_VC_MODE				BIT(2)
+#define		CSI2_RX_CFG1_COMPLETE_STREAM_EN			BIT(4)
+#define		CSI2_RX_CFG1_COMPLETE_STREAM_FRAME_TIMING	BIT(5)
+#define		CSI2_RX_CFG1_MISR_EN				BIT(6)
+#define		CSI2_RX_CFG1_CGC_MODE				BIT(7)
+
+#define CSID_CSI2_RX_CAPTURE_CTRL				0x208
+#define		CSI2_RX_CAPTURE_CTRL_LONG_PKT_EN		BIT(0)
+#define		CSI2_RX_CAPTURE_CTRL_SHORT_PKT_EN		BIT(1)
+#define		CSI2_RX_CAPTURE_CTRL_CPHY_PKT_EN		BIT(2)
+#define		CSI2_RX_CAPTURE_CTRL_LONG_PKT_DT		GENMASK(9, 4)
+#define		CSI2_RX_CAPTURE_CTRL_LONG_PKT_VC		GENMASK(14, 10)
+#define		CSI2_RX_CAPTURE_CTRL_SHORT_PKT_VC		GENMASK(19, 15)
+#define		CSI2_RX_CAPTURE_CTRL_CPHY_PKT_DT		GENMASK(20, 25)
+#define		CSI2_RX_CAPTURE_CTRL_CPHY_PKT_VC		GENMASK(30, 26)
+
+#define CSID_CSI2_RX_TOTAL_PKTS_RCVD				0x240
+#define CSID_CSI2_RX_STATS_ECC					0x244
+#define CSID_CSI2_RX_CRC_ERRORS					0x248
+
+#define CSID_RDI_CFG0(rdi)					(0x500 + 0x100 * (rdi))
+#define		RDI_CFG0_DECODE_FORMAT				12
+#define		RDI_CFG0_DATA_TYPE				16
+#define		RDI_CFG0_VIRTUAL_CHANNEL			22
+#define		RDI_CFG0_DT_ID					27
+#define		RDI_CFG0_ENABLE					BIT(31)
+
+#define CSID_RDI_CTRL(rdi)					(0x504 + 0x100 * (rdi))
+#define		CSID_RDI_CTRL_HALT_CMD_HALT_AT_FRAME_BOUNDARY	0
+#define		CSID_RDI_CTRL_HALT_CMD_RESUME_AT_FRAME_BOUNDARY	1
+
+#define CSID_RDI_CFG1(rdi)					(0x510 + 0x100 * (rdi))
+#define		RDI_CFG1_TIMESTAMP_STB_FRAME			BIT(0)
+#define		RDI_CFG1_TIMESTAMP_STB_IRQ			BIT(1)
+#define		RDI_CFG1_BYTE_CNTR_EN				BIT(2)
+#define		RDI_CFG1_TIMESTAMP_EN				BIT(4)
+#define		RDI_CFG1_DROP_H_EN				BIT(5)
+#define		RDI_CFG1_DROP_V_EN				BIT(6)
+#define		RDI_CFG1_CROP_H_EN				BIT(7)
+#define		RDI_CFG1_CROP_V_EN				BIT(8)
+#define		RDI_CFG1_MISR_EN				BIT(9)
+#define		RDI_CFG1_PLAIN_ALIGN_MSB			BIT(11)
+#define		RDI_CFG1_EARLY_EOF_EN				BIT(14)
+#define		RDI_CFG1_PACKING_MIPI				BIT(15)
+
+#define CSID_RDI_ERR_RECOVERY_CFG0(rdi)				(0x514 + 0x100 * (rdi))
+#define CSID_RDI_EPOCH_IRQ_CFG(rdi)				(0x52c + 0x100 * (rdi))
+#define CSID_RDI_FRM_DROP_PATTERN(rdi)				(0x540 + 0x100 * (rdi))
+#define CSID_RDI_FRM_DROP_PERIOD(rdi)				(0x544 + 0x100 * (rdi))
+#define CSID_RDI_IRQ_SUBSAMPLE_PATTERN(rdi)			(0x548 + 0x100 * (rdi))
+#define CSID_RDI_IRQ_SUBSAMPLE_PERIOD(rdi)			(0x54c + 0x100 * (rdi))
+#define CSID_RDI_PIX_DROP_PATTERN(rdi)				(0x558 + 0x100 * (rdi))
+#define CSID_RDI_PIX_DROP_PERIOD(rdi)				(0x55c + 0x100 * (rdi))
+#define CSID_RDI_LINE_DROP_PATTERN(rdi)				(0x560 + 0x100 * (rdi))
+#define CSID_RDI_LINE_DROP_PERIOD(rdi)				(0x564 + 0x100 * (rdi))
+
+static inline int reg_update_rdi(struct csid_device *csid, int n)
+{
+	return BIT(4 + n) + BIT(20 + n);
+}
+
+static void csid_reg_update(struct csid_device *csid, int port_id)
+{
+	csid->reg_update |= reg_update_rdi(csid, port_id);
+	writel(csid->reg_update, csid->base + CSID_REG_UPDATE_CMD);
+}
+
+static inline void csid_reg_update_clear(struct csid_device *csid,
+					 int port_id)
+{
+	csid->reg_update &= ~reg_update_rdi(csid, port_id);
+	writel(csid->reg_update, csid->base + CSID_REG_UPDATE_CMD);
+}
+
+static void __csid_configure_rx(struct csid_device *csid,
+				struct csid_phy_config *phy, int vc)
+{
+	u32 val;
+	struct camss *camss;
+
+	camss = csid->camss;
+	val = (phy->lane_cnt - 1) << CSI2_RX_CFG0_NUM_ACTIVE_LANES;
+	val |= phy->lane_assign << CSI2_RX_CFG0_DL0_INPUT_SEL;
+
+	if (camss->tpg && csid->tpg_linked &&
+	    camss->tpg[phy->csiphy_id].testgen.mode != TPG_PAYLOAD_MODE_DISABLED) {
+		val |= FIELD_PREP(CSI2_RX_CFG0_TPG_MUX_SEL, phy->csiphy_id + 1);
+		val |= CSI2_RX_CFG0_TPG_MUX_EN;
+	} else {
+		val |= (phy->csiphy_id + CSI2_RX_CFG0_PHY_SEL_BASE_IDX)
+			<< CSI2_RX_CFG0_PHY_NUM_SEL;
+	}
+
+	writel(val, csid->base + CSID_CSI2_RX_CFG0);
+
+	val = CSI2_RX_CFG1_PACKET_ECC_CORRECTION_EN;
+	if (vc > 3)
+		val |= CSI2_RX_CFG1_VC_MODE;
+	writel(val, csid->base + CSID_CSI2_RX_CFG1);
+}
+
+static void __csid_ctrl_rdi(struct csid_device *csid, int enable, u8 rdi)
+{
+	u32 val;
+
+	if (enable)
+		val = CSID_RDI_CTRL_HALT_CMD_RESUME_AT_FRAME_BOUNDARY;
+	else
+		val = CSID_RDI_CTRL_HALT_CMD_HALT_AT_FRAME_BOUNDARY;
+
+	writel(val, csid->base + CSID_RDI_CTRL(rdi));
+}
+
+static void __csid_configure_top(struct csid_device *csid)
+{
+	u32 val;
+
+	val = CSID_TOP_IO_PATH_CFG0_OUTPUT_IFE_EN | CSID_TOP_IO_PATH_CFG0_INTERNAL_CSID;
+	writel(val, csid->camss->csid_wrapper_base +
+	    CSID_TOP_IO_PATH_CFG0(csid->id));
+}
+
+static void __csid_configure_rdi_stream(struct csid_device *csid, u8 enable, u8 port, u8 vc)
+{
+	struct v4l2_mbus_framefmt *input_format = &csid->fmt[MSM_CSID_PAD_FIRST_SRC + port];
+	const struct csid_format_info *format = csid_get_fmt_entry(csid->res->formats->formats,
+								   csid->res->formats->nformats,
+								   input_format->code);
+	u8 lane_cnt = csid->phy.lane_cnt;
+	u8 dt_id;
+	u32 val;
+
+	if (!lane_cnt)
+		lane_cnt = 4;
+
+	val = 0;
+	writel(val, csid->base + CSID_RDI_FRM_DROP_PERIOD(port));
+
+	/*
+	 * DT_ID is a two bit bitfield that is concatenated with
+	 * the four least significant bits of the five bit VC
+	 * bitfield to generate an internal CID value.
+	 *
+	 * CSID_RDI_CFG0(port)
+	 * DT_ID : 28:27
+	 * VC    : 26:22
+	 * DT    : 21:16
+	 *
+	 * CID   : VC 3:0 << 2 | DT_ID 1:0
+	 */
+	dt_id = port & 0x03;
+
+	/* note: for non-RDI path, this should be format->decode_format */
+	val |= DECODE_FORMAT_PAYLOAD_ONLY << RDI_CFG0_DECODE_FORMAT;
+	val |= format->data_type << RDI_CFG0_DATA_TYPE;
+	val |= vc << RDI_CFG0_VIRTUAL_CHANNEL;
+	val |= dt_id << RDI_CFG0_DT_ID;
+	writel(val, csid->base + CSID_RDI_CFG0(port));
+
+	val = RDI_CFG1_TIMESTAMP_STB_FRAME;
+	val |= RDI_CFG1_BYTE_CNTR_EN;
+	val |= RDI_CFG1_TIMESTAMP_EN;
+	val |= RDI_CFG1_DROP_H_EN;
+	val |= RDI_CFG1_DROP_V_EN;
+	val |= RDI_CFG1_CROP_H_EN;
+	val |= RDI_CFG1_CROP_V_EN;
+	val |= RDI_CFG1_PACKING_MIPI;
+
+	writel(val, csid->base + CSID_RDI_CFG1(port));
+
+	val = 0;
+	writel(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PERIOD(port));
+
+	val = 1;
+	writel(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PATTERN(port));
+
+	val = 0;
+	writel(val, csid->base + CSID_RDI_CTRL(port));
+
+	val = readl(csid->base + CSID_RDI_CFG0(port));
+	if (enable)
+		val |= RDI_CFG0_ENABLE;
+	else
+		val &= ~RDI_CFG0_ENABLE;
+	writel(val, csid->base + CSID_RDI_CFG0(port));
+}
+
+static void csid_configure_stream(struct csid_device *csid, u8 enable)
+{
+	int i;
+
+	__csid_configure_top(csid);
+
+	/* Loop through all enabled ports and configure a stream for each */
+	for (i = 0; i < MSM_CSID_MAX_SRC_STREAMS; i++) {
+		if (csid->phy.en_vc & BIT(i)) {
+			__csid_configure_rdi_stream(csid, enable, i, 0);
+			__csid_configure_rx(csid, &csid->phy, 0);
+			__csid_ctrl_rdi(csid, enable, i);
+		}
+	}
+}
+
+/*
+ * csid_reset - Trigger reset on CSID module and wait to complete
+ * @csid: CSID device
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+static int csid_reset(struct csid_device *csid)
+{
+	unsigned long time;
+	u32 val;
+	int i;
+
+	reinit_completion(&csid->reset_complete);
+
+	writel(CSID_IRQ_CMD_CLEAR, csid->base + CSID_IRQ_CMD);
+
+	/* preserve registers */
+	val = CSID_RESET_CFG_MODE_IMMEDIATE | CSID_RESET_CFG_LOCATION_COMPLETE;
+	writel(val, csid->base + CSID_RESET_CFG);
+
+	val = CSID_RESET_CMD_HW_RESET | CSID_RESET_CMD_SW_RESET;
+	writel(val, csid->base + CSID_RESET_CMD);
+
+	time = wait_for_completion_timeout(&csid->reset_complete,
+					   msecs_to_jiffies(CSID_RESET_TIMEOUT_MS));
+	if (!time) {
+		dev_err(csid->camss->dev, "CSID reset timeout\n");
+		return -EIO;
+	}
+
+	for (i = 0; i < MSM_CSID_MAX_SRC_STREAMS; i++) {
+		/* Enable RUP done for the client port */
+		writel(CSID_CSI2_RDIN_RUP_DONE, csid->base + CSID_CSI2_RDIN_IRQ_MASK(i));
+	}
+
+	/* Clear RDI status */
+	writel(~0u, csid->base + CSID_BUF_DONE_IRQ_CLEAR);
+
+	/* Enable BUF_DONE bit for all write-master client ports */
+	writel(~0u, csid->base + CSID_BUF_DONE_IRQ_MASK);
+
+	/* Unmask all TOP interrupts */
+	writel(~0u, csid->base + CSID_TOP_IRQ_MASK);
+
+	return 0;
+}
+
+static void csid_rup_complete(struct csid_device *csid, int rdi)
+{
+	csid_reg_update_clear(csid, rdi);
+}
+
+/*
+ * csid_isr - CSID module interrupt service routine
+ * @irq: Interrupt line
+ * @dev: CSID device
+ *
+ * Return IRQ_HANDLED on success
+ */
+static irqreturn_t csid_isr(int irq, void *dev)
+{
+	struct csid_device *csid = dev;
+	u32 buf_done_val, val, val_top;
+	int i;
+
+	/* Latch and clear TOP status */
+	val_top = readl(csid->base + CSID_TOP_IRQ_STATUS);
+	writel(val_top, csid->base + CSID_TOP_IRQ_CLEAR);
+
+	/* Latch and clear CSID_CSI2 status */
+	val = readl(csid->base + CSID_CSI2_RX_IRQ_STATUS);
+	writel(val, csid->base + CSID_CSI2_RX_IRQ_CLEAR);
+
+	/* Latch and clear top level BUF_DONE status */
+	buf_done_val = readl(csid->base + CSID_BUF_DONE_IRQ_STATUS);
+	writel(buf_done_val, csid->base + CSID_BUF_DONE_IRQ_CLEAR);
+
+	/* Process state for each RDI channel */
+	for (i = 0; i < MSM_CSID_MAX_SRC_STREAMS; i++) {
+		val = readl(csid->base + CSID_CSI2_RDIN_IRQ_STATUS(i));
+		if (val)
+			writel(val, csid->base + CSID_CSI2_RDIN_IRQ_CLEAR(i));
+
+		if (val & CSID_CSI2_RDIN_RUP_DONE)
+			csid_rup_complete(csid, i);
+
+		if (buf_done_val & BIT(BUF_DONE_IRQ_STATUS_RDI_OFFSET + i))
+			camss_buf_done(csid->camss, csid->id, i);
+	}
+
+	/* Issue clear command */
+	writel(CSID_IRQ_CMD_CLEAR, csid->base + CSID_IRQ_CMD);
+
+	/* Reset complete */
+	if (val_top & CSID_TOP_IRQ_RESET)
+		complete(&csid->reset_complete);
+
+	return IRQ_HANDLED;
+}
+
+static void csid_subdev_reg_update(struct csid_device *csid, int port_id, bool is_clear)
+{
+	if (is_clear)
+		csid_reg_update_clear(csid, port_id);
+	else
+		csid_reg_update(csid, port_id);
+}
+
+static void csid_subdev_init(struct csid_device *csid) {}
+
+const struct csid_hw_ops csid_ops_680 = {
+	.configure_testgen_pattern = NULL,
+	.configure_stream = csid_configure_stream,
+	.hw_version = csid_hw_version,
+	.isr = csid_isr,
+	.reset = csid_reset,
+	.src_pad_code = csid_src_pad_code,
+	.subdev_init = csid_subdev_init,
+	.reg_update = csid_subdev_reg_update,
+};

linux-7.2.3/drivers/media/platform/qcom/camss/camss-csid-gen1.h

@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * camss-csid-gen1.h
+ *
+ * Qualcomm MSM Camera Subsystem - CSID (CSI Decoder) Module Generation 1
+ *
+ * Copyright (C) 2021 Linaro Ltd.
+ */
+#ifndef QC_MSM_CAMSS_CSID_GEN1_H
+#define QC_MSM_CAMSS_CSID_GEN1_H
+
+#define DECODE_FORMAT_UNCOMPRESSED_6_BIT	0x0
+#define DECODE_FORMAT_UNCOMPRESSED_8_BIT	0x1
+#define DECODE_FORMAT_UNCOMPRESSED_10_BIT	0x2
+#define DECODE_FORMAT_UNCOMPRESSED_12_BIT	0x3
+#define DECODE_FORMAT_DPCM_10_6_10		0x4
+#define DECODE_FORMAT_DPCM_10_8_10		0x5
+#define DECODE_FORMAT_DPCM_12_6_12		0x6
+#define DECODE_FORMAT_DPCM_12_8_12		0x7
+#define DECODE_FORMAT_UNCOMPRESSED_14_BIT	0x8
+#define DECODE_FORMAT_DPCM_14_8_14		0x9
+#define DECODE_FORMAT_DPCM_14_10_14		0xa
+
+#define PLAIN_FORMAT_PLAIN8	0x0 /* supports DPCM, UNCOMPRESSED_6/8_BIT */
+#define PLAIN_FORMAT_PLAIN16	0x1 /* supports DPCM, UNCOMPRESSED_10/16_BIT */
+
+#endif /* QC_MSM_CAMSS_CSID_GEN1_H */

linux-7.2.3/drivers/media/platform/qcom/camss/camss-csid-gen2.c

@@ -0,0 +1,433 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * camss-csid-4-7.c
+ *
+ * Qualcomm MSM Camera Subsystem - CSID (CSI Decoder) Module
+ *
+ * Copyright (C) 2020 Linaro Ltd.
+ */
+#include <linux/completion.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+
+#include "camss-csid.h"
+#include "camss-csid-gen2.h"
+#include "camss.h"
+
+/* The CSID 2 IP-block is different from the others,
+ * and is of a bare-bones Lite version, with no PIX
+ * interface support. As a result of that it has an
+ * alternate register layout.
+ */
+
+#define CSID_RST_STROBES	0x10
+#define		RST_STROBES	0
+
+#define CSID_CSI2_RX_IRQ_STATUS	0x20
+#define	CSID_CSI2_RX_IRQ_MASK	0x24
+#define CSID_CSI2_RX_IRQ_CLEAR	0x28
+
+#define CSID_CSI2_RDIN_IRQ_STATUS(rdi)		((csid_is_lite(csid) ? 0x30 : 0x40) \
+						 + 0x10 * (rdi))
+#define CSID_CSI2_RDIN_IRQ_MASK(rdi)		((csid_is_lite(csid) ? 0x34 : 0x44) \
+						 + 0x10 * (rdi))
+#define CSID_CSI2_RDIN_IRQ_CLEAR(rdi)		((csid_is_lite(csid) ? 0x38 : 0x48) \
+						 + 0x10 * (rdi))
+#define CSID_CSI2_RDIN_IRQ_SET(rdi)		((csid_is_lite(csid) ? 0x3C : 0x4C) \
+						 + 0x10 * (rdi))
+
+#define CSID_TOP_IRQ_STATUS	0x70
+#define		TOP_IRQ_STATUS_RESET_DONE 0
+#define CSID_TOP_IRQ_MASK	0x74
+#define CSID_TOP_IRQ_CLEAR	0x78
+#define CSID_TOP_IRQ_SET	0x7C
+#define CSID_IRQ_CMD		0x80
+#define		IRQ_CMD_CLEAR	0
+#define		IRQ_CMD_SET	4
+
+#define CSID_CSI2_RX_CFG0	0x100
+#define		CSI2_RX_CFG0_NUM_ACTIVE_LANES	0
+#define		CSI2_RX_CFG0_DL0_INPUT_SEL	4
+#define		CSI2_RX_CFG0_DL1_INPUT_SEL	8
+#define		CSI2_RX_CFG0_DL2_INPUT_SEL	12
+#define		CSI2_RX_CFG0_DL3_INPUT_SEL	16
+#define		CSI2_RX_CFG0_PHY_NUM_SEL	20
+#define		CSI2_RX_CFG0_PHY_TYPE_SEL	24
+
+#define CSID_CSI2_RX_CFG1	0x104
+#define		CSI2_RX_CFG1_PACKET_ECC_CORRECTION_EN		0
+#define		CSI2_RX_CFG1_DE_SCRAMBLE_EN			1
+#define		CSI2_RX_CFG1_VC_MODE				2
+#define		CSI2_RX_CFG1_COMPLETE_STREAM_EN			4
+#define		CSI2_RX_CFG1_COMPLETE_STREAM_FRAME_TIMING	5
+#define		CSI2_RX_CFG1_MISR_EN				6
+#define		CSI2_RX_CFG1_CGC_MODE				7
+#define			CGC_MODE_DYNAMIC_GATING		0
+#define			CGC_MODE_ALWAYS_ON		1
+
+#define CSID_RDI_CFG0(rdi)			((csid_is_lite(csid) ? 0x200 : 0x300) \
+						 + 0x100 * (rdi))
+#define		RDI_CFG0_BYTE_CNTR_EN		0
+#define		RDI_CFG0_FORMAT_MEASURE_EN	1
+#define		RDI_CFG0_TIMESTAMP_EN		2
+#define		RDI_CFG0_DROP_H_EN		3
+#define		RDI_CFG0_DROP_V_EN		4
+#define		RDI_CFG0_CROP_H_EN		5
+#define		RDI_CFG0_CROP_V_EN		6
+#define		RDI_CFG0_MISR_EN		7
+#define		RDI_CFG0_CGC_MODE		8
+#define			CGC_MODE_DYNAMIC	0
+#define			CGC_MODE_ALWAYS_ON	1
+#define		RDI_CFG0_PLAIN_ALIGNMENT	9
+#define			PLAIN_ALIGNMENT_LSB	0
+#define			PLAIN_ALIGNMENT_MSB	1
+#define		RDI_CFG0_PLAIN_FORMAT		10
+#define		RDI_CFG0_DECODE_FORMAT		12
+#define		RDI_CFG0_DATA_TYPE		16
+#define		RDI_CFG0_VIRTUAL_CHANNEL	22
+#define		RDI_CFG0_DT_ID			27
+#define		RDI_CFG0_EARLY_EOF_EN		29
+#define		RDI_CFG0_PACKING_FORMAT		30
+#define		RDI_CFG0_ENABLE			31
+
+#define CSID_RDI_CFG1(rdi)			((csid_is_lite(csid) ? 0x204 : 0x304)\
+						+ 0x100 * (rdi))
+#define		RDI_CFG1_TIMESTAMP_STB_SEL	0
+
+#define CSID_RDI_CTRL(rdi)			((csid_is_lite(csid) ? 0x208 : 0x308)\
+						+ 0x100 * (rdi))
+#define		RDI_CTRL_HALT_CMD		0
+#define			HALT_CMD_HALT_AT_FRAME_BOUNDARY		0
+#define			HALT_CMD_RESUME_AT_FRAME_BOUNDARY	1
+#define		RDI_CTRL_HALT_MODE		2
+
+#define CSID_RDI_FRM_DROP_PATTERN(rdi)			((csid_is_lite(csid) ? 0x20C : 0x30C)\
+							+ 0x100 * (rdi))
+#define CSID_RDI_FRM_DROP_PERIOD(rdi)			((csid_is_lite(csid) ? 0x210 : 0x310)\
+							+ 0x100 * (rdi))
+#define CSID_RDI_IRQ_SUBSAMPLE_PATTERN(rdi)		((csid_is_lite(csid) ? 0x214 : 0x314)\
+							+ 0x100 * (rdi))
+#define CSID_RDI_IRQ_SUBSAMPLE_PERIOD(rdi)		((csid_is_lite(csid) ? 0x218 : 0x318)\
+							+ 0x100 * (rdi))
+#define CSID_RDI_RPP_PIX_DROP_PATTERN(rdi)		((csid_is_lite(csid) ? 0x224 : 0x324)\
+							+ 0x100 * (rdi))
+#define CSID_RDI_RPP_PIX_DROP_PERIOD(rdi)		((csid_is_lite(csid) ? 0x228 : 0x328)\
+							+ 0x100 * (rdi))
+#define CSID_RDI_RPP_LINE_DROP_PATTERN(rdi)		((csid_is_lite(csid) ? 0x22C : 0x32C)\
+							+ 0x100 * (rdi))
+#define CSID_RDI_RPP_LINE_DROP_PERIOD(rdi)		((csid_is_lite(csid) ? 0x230 : 0x330)\
+							+ 0x100 * (rdi))
+
+#define CSID_TPG_CTRL		0x600
+#define		TPG_CTRL_TEST_EN		0
+#define		TPG_CTRL_FS_PKT_EN		1
+#define		TPG_CTRL_FE_PKT_EN		2
+#define		TPG_CTRL_NUM_ACTIVE_LANES	4
+#define		TPG_CTRL_CYCLES_BETWEEN_PKTS	8
+#define		TPG_CTRL_NUM_TRAIL_BYTES	20
+
+#define CSID_TPG_VC_CFG0	0x604
+#define		TPG_VC_CFG0_VC_NUM			0
+#define		TPG_VC_CFG0_NUM_ACTIVE_SLOTS		8
+#define			NUM_ACTIVE_SLOTS_0_ENABLED	0
+#define			NUM_ACTIVE_SLOTS_0_1_ENABLED	1
+#define			NUM_ACTIVE_SLOTS_0_1_2_ENABLED	2
+#define			NUM_ACTIVE_SLOTS_0_1_3_ENABLED	3
+#define		TPG_VC_CFG0_LINE_INTERLEAVING_MODE	10
+#define			INTELEAVING_MODE_INTERLEAVED	0
+#define			INTELEAVING_MODE_ONE_SHOT	1
+#define		TPG_VC_CFG0_NUM_FRAMES			16
+
+#define CSID_TPG_VC_CFG1	0x608
+#define		TPG_VC_CFG1_H_BLANKING_COUNT		0
+#define		TPG_VC_CFG1_V_BLANKING_COUNT		12
+#define		TPG_VC_CFG1_V_BLANK_FRAME_WIDTH_SEL	24
+
+#define CSID_TPG_LFSR_SEED	0x60C
+
+#define CSID_TPG_DT_n_CFG_0(n)	(0x610 + (n) * 0xC)
+#define		TPG_DT_n_CFG_0_FRAME_HEIGHT	0
+#define		TPG_DT_n_CFG_0_FRAME_WIDTH	16
+
+#define CSID_TPG_DT_n_CFG_1(n)	(0x614 + (n) * 0xC)
+#define		TPG_DT_n_CFG_1_DATA_TYPE	0
+#define		TPG_DT_n_CFG_1_ECC_XOR_MASK	8
+#define		TPG_DT_n_CFG_1_CRC_XOR_MASK	16
+
+#define CSID_TPG_DT_n_CFG_2(n)	(0x618 + (n) * 0xC)
+#define		TPG_DT_n_CFG_2_PAYLOAD_MODE		0
+#define		TPG_DT_n_CFG_2_USER_SPECIFIED_PAYLOAD	4
+#define		TPG_DT_n_CFG_2_ENCODE_FORMAT		16
+
+#define CSID_TPG_COLOR_BARS_CFG	0x640
+#define		TPG_COLOR_BARS_CFG_UNICOLOR_BAR_EN	0
+#define		TPG_COLOR_BARS_CFG_UNICOLOR_BAR_SEL	4
+#define		TPG_COLOR_BARS_CFG_SPLIT_EN		5
+#define		TPG_COLOR_BARS_CFG_ROTATE_PERIOD	8
+
+#define CSID_TPG_COLOR_BOX_CFG	0x644
+#define		TPG_COLOR_BOX_CFG_MODE		0
+#define		TPG_COLOR_BOX_PATTERN_SEL	2
+
+static void __csid_configure_rx(struct csid_device *csid,
+				struct csid_phy_config *phy, int vc)
+{
+	u8 lane_cnt = csid->phy.lane_cnt;
+	int val;
+
+	if (!lane_cnt)
+		lane_cnt = 4;
+
+	val = (lane_cnt - 1) << CSI2_RX_CFG0_NUM_ACTIVE_LANES;
+	val |= phy->lane_assign << CSI2_RX_CFG0_DL0_INPUT_SEL;
+	val |= phy->csiphy_id << CSI2_RX_CFG0_PHY_NUM_SEL;
+	writel_relaxed(val, csid->base + CSID_CSI2_RX_CFG0);
+
+	val = 1 << CSI2_RX_CFG1_PACKET_ECC_CORRECTION_EN;
+	if (vc > 3)
+		val |= 1 << CSI2_RX_CFG1_VC_MODE;
+	val |= 1 << CSI2_RX_CFG1_MISR_EN;
+	writel_relaxed(val, csid->base + CSID_CSI2_RX_CFG1);
+}
+
+static void __csid_ctrl_rdi(struct csid_device *csid, int enable, u8 rdi)
+{
+	int val;
+
+	if (enable)
+		val = HALT_CMD_RESUME_AT_FRAME_BOUNDARY << RDI_CTRL_HALT_CMD;
+	else
+		val = HALT_CMD_HALT_AT_FRAME_BOUNDARY << RDI_CTRL_HALT_CMD;
+	writel_relaxed(val, csid->base + CSID_RDI_CTRL(rdi));
+}
+
+static void __csid_configure_testgen(struct csid_device *csid, u8 enable, u8 port, u8 vc)
+{
+	struct csid_testgen_config *tg = &csid->testgen;
+	struct v4l2_mbus_framefmt *input_format = &csid->fmt[MSM_CSID_PAD_FIRST_SRC + port];
+	const struct csid_format_info *format = csid_get_fmt_entry(csid->res->formats->formats,
+								   csid->res->formats->nformats,
+								   input_format->code);
+	u8 lane_cnt = csid->phy.lane_cnt;
+	u32 val;
+
+	if (!lane_cnt)
+		lane_cnt = 4;
+
+	/* configure one DT, infinite frames */
+	val = vc << TPG_VC_CFG0_VC_NUM;
+	val |= INTELEAVING_MODE_ONE_SHOT << TPG_VC_CFG0_LINE_INTERLEAVING_MODE;
+	val |= 0 << TPG_VC_CFG0_NUM_FRAMES;
+	writel_relaxed(val, csid->base + CSID_TPG_VC_CFG0);
+
+	val = 0x740 << TPG_VC_CFG1_H_BLANKING_COUNT;
+	val |= 0x3ff << TPG_VC_CFG1_V_BLANKING_COUNT;
+	writel_relaxed(val, csid->base + CSID_TPG_VC_CFG1);
+
+	writel_relaxed(0x12345678, csid->base + CSID_TPG_LFSR_SEED);
+
+	val = (input_format->height & 0x1fff) << TPG_DT_n_CFG_0_FRAME_HEIGHT;
+	val |= (input_format->width & 0x1fff) << TPG_DT_n_CFG_0_FRAME_WIDTH;
+	writel_relaxed(val, csid->base + CSID_TPG_DT_n_CFG_0(0));
+
+	val = format->data_type << TPG_DT_n_CFG_1_DATA_TYPE;
+	writel_relaxed(val, csid->base + CSID_TPG_DT_n_CFG_1(0));
+
+	val = (tg->mode - 1) << TPG_DT_n_CFG_2_PAYLOAD_MODE;
+	val |= 0xBE << TPG_DT_n_CFG_2_USER_SPECIFIED_PAYLOAD;
+	val |= format->decode_format << TPG_DT_n_CFG_2_ENCODE_FORMAT;
+	writel_relaxed(val, csid->base + CSID_TPG_DT_n_CFG_2(0));
+
+	writel_relaxed(0, csid->base + CSID_TPG_COLOR_BARS_CFG);
+
+	writel_relaxed(0, csid->base + CSID_TPG_COLOR_BOX_CFG);
+
+	val = enable << TPG_CTRL_TEST_EN;
+	val |= 1 << TPG_CTRL_FS_PKT_EN;
+	val |= 1 << TPG_CTRL_FE_PKT_EN;
+	val |= (lane_cnt - 1) << TPG_CTRL_NUM_ACTIVE_LANES;
+	val |= 0x64 << TPG_CTRL_CYCLES_BETWEEN_PKTS;
+	val |= 0xA << TPG_CTRL_NUM_TRAIL_BYTES;
+	writel_relaxed(val, csid->base + CSID_TPG_CTRL);
+}
+
+static void __csid_configure_rdi_stream(struct csid_device *csid, u8 enable, u8 port, u8 vc)
+{
+	/* Source pads matching RDI channels on hardware. Pad 1 -> RDI0, Pad 2 -> RDI1, etc. */
+	struct v4l2_mbus_framefmt *input_format = &csid->fmt[MSM_CSID_PAD_FIRST_SRC + port];
+	const struct csid_format_info *format = csid_get_fmt_entry(csid->res->formats->formats,
+								   csid->res->formats->nformats,
+								   input_format->code);
+	u32 val;
+
+	/*
+	 * DT_ID is a two bit bitfield that is concatenated with
+	 * the four least significant bits of the five bit VC
+	 * bitfield to generate an internal CID value.
+	 *
+	 * CSID_RDI_CFG0(port)
+	 * DT_ID : 28:27
+	 * VC    : 26:22
+	 * DT    : 21:16
+	 *
+	 * CID   : VC 3:0 << 2 | DT_ID 1:0
+	 */
+	u8 dt_id = port & 0x03;
+
+	val = 1 << RDI_CFG0_BYTE_CNTR_EN;
+	val |= 1 << RDI_CFG0_FORMAT_MEASURE_EN;
+	val |= 1 << RDI_CFG0_TIMESTAMP_EN;
+	/* note: for non-RDI path, this should be format->decode_format */
+	val |= DECODE_FORMAT_PAYLOAD_ONLY << RDI_CFG0_DECODE_FORMAT;
+	val |= format->data_type << RDI_CFG0_DATA_TYPE;
+	val |= vc << RDI_CFG0_VIRTUAL_CHANNEL;
+	val |= dt_id << RDI_CFG0_DT_ID;
+	writel_relaxed(val, csid->base + CSID_RDI_CFG0(port));
+
+	/* CSID_TIMESTAMP_STB_POST_IRQ */
+	val = 2 << RDI_CFG1_TIMESTAMP_STB_SEL;
+	writel_relaxed(val, csid->base + CSID_RDI_CFG1(port));
+
+	val = 1;
+	writel_relaxed(val, csid->base + CSID_RDI_FRM_DROP_PERIOD(port));
+
+	val = 0;
+	writel_relaxed(val, csid->base + CSID_RDI_FRM_DROP_PATTERN(port));
+
+	val = 1;
+	writel_relaxed(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PERIOD(port));
+
+	val = 0;
+	writel_relaxed(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PATTERN(port));
+
+	val = 1;
+	writel_relaxed(val, csid->base + CSID_RDI_RPP_PIX_DROP_PERIOD(port));
+
+	val = 0;
+	writel_relaxed(val, csid->base + CSID_RDI_RPP_PIX_DROP_PATTERN(port));
+
+	val = 1;
+	writel_relaxed(val, csid->base + CSID_RDI_RPP_LINE_DROP_PERIOD(port));
+
+	val = 0;
+	writel_relaxed(val, csid->base + CSID_RDI_RPP_LINE_DROP_PATTERN(port));
+
+	val = 0;
+	writel_relaxed(val, csid->base + CSID_RDI_CTRL(port));
+
+	val = readl_relaxed(csid->base + CSID_RDI_CFG0(port));
+	val |=  enable << RDI_CFG0_ENABLE;
+	writel_relaxed(val, csid->base + CSID_RDI_CFG0(port));
+}
+
+static void csid_configure_stream(struct csid_device *csid, u8 enable)
+{
+	struct csid_testgen_config *tg = &csid->testgen;
+	u8 i;
+
+	/* Loop through all enabled ports and configure a stream for each */
+	for (i = 0; i < MSM_CSID_MAX_SRC_STREAMS; i++)
+		if (csid->phy.en_vc & BIT(i)) {
+			if (tg->enabled)
+				__csid_configure_testgen(csid, enable, i, 0);
+
+			__csid_configure_rdi_stream(csid, enable, i, 0);
+			__csid_configure_rx(csid, &csid->phy, 0);
+			__csid_ctrl_rdi(csid, enable, i);
+		}
+}
+
+static int csid_configure_testgen_pattern(struct csid_device *csid, s32 val)
+{
+	if (val > 0 && val <= csid->testgen.nmodes)
+		csid->testgen.mode = val;
+
+	return 0;
+}
+
+/*
+ * csid_isr - CSID module interrupt service routine
+ * @irq: Interrupt line
+ * @dev: CSID device
+ *
+ * Return IRQ_HANDLED on success
+ */
+static irqreturn_t csid_isr(int irq, void *dev)
+{
+	struct csid_device *csid = dev;
+	u32 val;
+	u8 reset_done;
+	int i;
+
+	val = readl_relaxed(csid->base + CSID_TOP_IRQ_STATUS);
+	writel_relaxed(val, csid->base + CSID_TOP_IRQ_CLEAR);
+	reset_done = val & BIT(TOP_IRQ_STATUS_RESET_DONE);
+
+	val = readl_relaxed(csid->base + CSID_CSI2_RX_IRQ_STATUS);
+	writel_relaxed(val, csid->base + CSID_CSI2_RX_IRQ_CLEAR);
+
+	/* Read and clear IRQ status for each enabled RDI channel */
+	for (i = 0; i < MSM_CSID_MAX_SRC_STREAMS; i++)
+		if (csid->phy.en_vc & BIT(i)) {
+			val = readl_relaxed(csid->base + CSID_CSI2_RDIN_IRQ_STATUS(i));
+			writel_relaxed(val, csid->base + CSID_CSI2_RDIN_IRQ_CLEAR(i));
+		}
+
+	val = 1 << IRQ_CMD_CLEAR;
+	writel_relaxed(val, csid->base + CSID_IRQ_CMD);
+
+	if (reset_done)
+		complete(&csid->reset_complete);
+
+	return IRQ_HANDLED;
+}
+
+/*
+ * csid_reset - Trigger reset on CSID module and wait to complete
+ * @csid: CSID device
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+static int csid_reset(struct csid_device *csid)
+{
+	unsigned long time;
+	u32 val;
+
+	reinit_completion(&csid->reset_complete);
+
+	writel_relaxed(1, csid->base + CSID_TOP_IRQ_CLEAR);
+	writel_relaxed(1, csid->base + CSID_IRQ_CMD);
+	writel_relaxed(1, csid->base + CSID_TOP_IRQ_MASK);
+	writel_relaxed(1, csid->base + CSID_IRQ_CMD);
+
+	/* preserve registers */
+	val = 0x1e << RST_STROBES;
+	writel_relaxed(val, csid->base + CSID_RST_STROBES);
+
+	time = wait_for_completion_timeout(&csid->reset_complete,
+					   msecs_to_jiffies(CSID_RESET_TIMEOUT_MS));
+	if (!time) {
+		dev_err(csid->camss->dev, "CSID reset timeout\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static void csid_subdev_init(struct csid_device *csid)
+{
+	csid->testgen.modes = csid_testgen_modes;
+	csid->testgen.nmodes = CSID_PAYLOAD_MODE_NUM_SUPPORTED_GEN2;
+}
+
+const struct csid_hw_ops csid_ops_gen2 = {
+	.configure_stream = csid_configure_stream,
+	.configure_testgen_pattern = csid_configure_testgen_pattern,
+	.hw_version = csid_hw_version,
+	.isr = csid_isr,
+	.reset = csid_reset,
+	.src_pad_code = csid_src_pad_code,
+	.subdev_init = csid_subdev_init,
+};

linux-7.2.3/drivers/media/platform/qcom/camss/camss-csid-gen2.h

@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * camss-csid-gen1.h
+ *
+ * Qualcomm MSM Camera Subsystem - CSID (CSI Decoder) Module Generation 1
+ *
+ * Copyright (C) 2021 Linaro Ltd.
+ */
+#ifndef QC_MSM_CAMSS_CSID_GEN2_H
+#define QC_MSM_CAMSS_CSID_GEN2_H
+
+#define DECODE_FORMAT_UNCOMPRESSED_6_BIT	0x0
+#define DECODE_FORMAT_UNCOMPRESSED_8_BIT	0x1
+#define DECODE_FORMAT_UNCOMPRESSED_10_BIT	0x2
+#define DECODE_FORMAT_UNCOMPRESSED_12_BIT	0x3
+#define DECODE_FORMAT_UNCOMPRESSED_14_BIT	0x4
+#define DECODE_FORMAT_UNCOMPRESSED_16_BIT	0x5
+#define DECODE_FORMAT_UNCOMPRESSED_20_BIT	0x6
+#define DECODE_FORMAT_DPCM_10_6_10		0x7
+#define DECODE_FORMAT_DPCM_10_8_10		0x8
+#define DECODE_FORMAT_DPCM_12_6_12		0x9
+#define DECODE_FORMAT_DPCM_12_8_12		0xa
+#define DECODE_FORMAT_DPCM_14_8_14		0xb
+#define DECODE_FORMAT_DPCM_14_10_14		0xc
+#define DECODE_FORMAT_DPCM_12_10_12		0xd
+#define DECODE_FORMAT_USER_DEFINED		0xe
+#define DECODE_FORMAT_PAYLOAD_ONLY		0xf
+
+#define ENCODE_FORMAT_RAW_8_BIT		0x1
+#define ENCODE_FORMAT_RAW_10_BIT	0x2
+#define ENCODE_FORMAT_RAW_12_BIT	0x3
+#define ENCODE_FORMAT_RAW_14_BIT	0x4
+#define ENCODE_FORMAT_RAW_16_BIT	0x5
+
+#define PLAIN_FORMAT_PLAIN8	0x0 /* supports DPCM, UNCOMPRESSED_6/8_BIT */
+#define PLAIN_FORMAT_PLAIN16	0x1 /* supports DPCM, UNCOMPRESSED_10/16_BIT */
+#define PLAIN_FORMAT_PLAIN32	0x2 /* supports UNCOMPRESSED_20_BIT */
+
+#endif /* QC_MSM_CAMSS_CSID_GEN2_H */

linux-7.2.3/drivers/media/platform/qcom/camss/camss-csid-gen3.c

@@ -0,0 +1,363 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Qualcomm MSM Camera Subsystem - CSID (CSI Decoder) Module
+ *
+ * Copyright (c) 2024 Qualcomm Technologies, Inc.
+ */
+#include <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+
+#include "camss.h"
+#include "camss-csid.h"
+#include "camss-csid-gen3.h"
+
+#define CSID_IO_PATH_CFG0(csid)		(0x4 * (csid))
+#define		OUTPUT_IFE_EN			0x100
+#define		INTERNAL_CSID			1
+
+#define CSID_RST_CFG			0xC
+#define		RST_MODE			BIT(0)
+#define		RST_LOCATION			BIT(4)
+
+#define CSID_RST_CMD			0x10
+#define		SELECT_HW_RST			BIT(0)
+#define		SELECT_IRQ_RST			BIT(2)
+
+#define CSID_IRQ_CMD			0x14
+#define		IRQ_CMD_CLEAR			BIT(0)
+
+#define CSID_RUP_AUP_CMD		0x18
+#define		CSID_RUP_AUP_RDI(rdi)		((BIT(4) | BIT(20)) << (rdi))
+
+#define CSID_TOP_IRQ_STATUS		0x7C
+#define		 TOP_IRQ_STATUS_RESET_DONE	BIT(0)
+
+#define CSID_TOP_IRQ_MASK		0x80
+#define CSID_TOP_IRQ_CLEAR		0x84
+#define CSID_TOP_IRQ_SET		0x88
+
+#define CSID_CSI2_RX_IRQ_STATUS		0x9C
+#define CSID_CSI2_RX_IRQ_MASK		0xA0
+#define CSID_CSI2_RX_IRQ_CLEAR		0xA4
+#define CSID_CSI2_RX_IRQ_SET		0xA8
+
+#define IS_CSID_690(csid)	((csid->camss->res->version == CAMSS_8775P) \
+				 || (csid->camss->res->version == CAMSS_8300))
+#define CSID_BUF_DONE_IRQ_STATUS	0x8C
+#define BUF_DONE_IRQ_STATUS_RDI_OFFSET  (csid_is_lite(csid) ? \
+						((IS_CSID_690(csid) ? 0 : 1)) : \
+						((IS_CSID_690(csid) ? 13 : 14)))
+#define CSID_BUF_DONE_IRQ_MASK		0x90
+#define CSID_BUF_DONE_IRQ_CLEAR		0x94
+#define CSID_BUF_DONE_IRQ_SET		0x98
+
+#define CSID_CSI2_RDIN_IRQ_STATUS(rdi)	(0xEC + 0x10 * (rdi))
+#define		RUP_DONE_IRQ_STATUS		BIT(23)
+
+#define CSID_CSI2_RDIN_IRQ_CLEAR(rdi)	(0xF4 + 0x10 * (rdi))
+#define CSID_CSI2_RDIN_IRQ_SET(rdi)	(0xF8 + 0x10 * (rdi))
+
+#define CSID_CSI2_RX_CFG0		0x200
+#define		CSI2_RX_CFG0_NUM_ACTIVE_LANES	0
+#define		CSI2_RX_CFG0_VC_MODE		3
+#define		CSI2_RX_CFG0_DL0_INPUT_SEL	4
+#define		CSI2_RX_CFG0_PHY_NUM_SEL	20
+#define		CSI2_RX_CFG0_TPG_MUX_EN		BIT(27)
+#define		CSI2_RX_CFG0_TPG_MUX_SEL	GENMASK(29, 28)
+
+#define CSID_CSI2_RX_CFG1		0x204
+#define		CSI2_RX_CFG1_ECC_CORRECTION_EN	BIT(0)
+#define		CSI2_RX_CFG1_VC_MODE		BIT(2)
+
+#define CSID_RDI_CFG0(rdi)	(csid_is_lite(csid) && IS_CSID_690(csid) ?\
+					(0x300 + 0x100 * (rdi)) :\
+					(0x500 + 0x100 * (rdi)))
+#define		RDI_CFG0_TIMESTAMP_EN		BIT(6)
+#define		RDI_CFG0_TIMESTAMP_STB_SEL	BIT(8)
+#define		RDI_CFG0_DECODE_FORMAT		12
+#define		RDI_CFG0_DT			16
+#define		RDI_CFG0_VC			22
+#define		RDI_CFG0_DT_ID			27
+#define		RDI_CFG0_EN			BIT(31)
+
+#define CSID_RDI_CTRL(rdi)	(csid_is_lite(csid) && IS_CSID_690(csid) ?\
+					(0x304 + 0x100 * (rdi)) :\
+					(0x504 + 0x100 * (rdi)))
+#define		RDI_CTRL_START_CMD		BIT(0)
+
+#define CSID_RDI_CFG1(rdi)	(csid_is_lite(csid) && IS_CSID_690(csid) ?\
+					(0x310 + 0x100 * (rdi)) :\
+					(0x510 + 0x100 * (rdi)))
+#define		RDI_CFG1_DROP_H_EN		BIT(5)
+#define		RDI_CFG1_DROP_V_EN		BIT(6)
+#define		RDI_CFG1_CROP_H_EN		BIT(7)
+#define		RDI_CFG1_CROP_V_EN		BIT(8)
+#define		RDI_CFG1_PIX_STORE		BIT(10)
+#define		RDI_CFG1_PACKING_FORMAT_MIPI	BIT(15)
+
+#define CSID_RDI_IRQ_SUBSAMPLE_PATTERN(rdi)	(csid_is_lite(csid) && IS_CSID_690(csid) ?\
+							(0x348 + 0x100 * (rdi)) :\
+							(0x548 + 0x100 * (rdi)))
+#define CSID_RDI_IRQ_SUBSAMPLE_PERIOD(rdi)	(csid_is_lite(csid) && IS_CSID_690(csid) ?\
+							(0x34C + 0x100 * (rdi)) :\
+							(0x54C + 0x100 * (rdi)))
+#define CSI2_RX_CFG0_PHY_SEL_BASE_IDX	1
+
+static void __csid_configure_rx(struct csid_device *csid,
+				struct csid_phy_config *phy, int vc)
+{
+	int val;
+	struct camss *camss;
+
+	camss = csid->camss;
+	val = (phy->lane_cnt - 1) << CSI2_RX_CFG0_NUM_ACTIVE_LANES;
+	val |= phy->lane_assign << CSI2_RX_CFG0_DL0_INPUT_SEL;
+
+	if (camss->tpg && csid->tpg_linked &&
+	    camss->tpg[phy->csiphy_id].testgen.mode != TPG_PAYLOAD_MODE_DISABLED) {
+		val |= FIELD_PREP(CSI2_RX_CFG0_TPG_MUX_SEL, phy->csiphy_id + 1);
+		val |= CSI2_RX_CFG0_TPG_MUX_EN;
+	} else {
+		val |= (phy->csiphy_id + CSI2_RX_CFG0_PHY_SEL_BASE_IDX)
+			<< CSI2_RX_CFG0_PHY_NUM_SEL;
+	}
+
+	writel(val, csid->base + CSID_CSI2_RX_CFG0);
+
+	val = CSI2_RX_CFG1_ECC_CORRECTION_EN;
+	if (vc > 3)
+		val |= CSI2_RX_CFG1_VC_MODE;
+
+	writel(val, csid->base + CSID_CSI2_RX_CFG1);
+}
+
+static void __csid_ctrl_rdi(struct csid_device *csid, int enable, u8 rdi)
+{
+	int val = 0;
+
+	if (enable)
+		val = RDI_CTRL_START_CMD;
+
+	writel(val, csid->base + CSID_RDI_CTRL(rdi));
+}
+
+static void __csid_configure_wrapper(struct csid_device *csid)
+{
+	u32 val;
+
+	/* csid lite doesn't need to configure top register */
+	if (csid->res->is_lite)
+		return;
+
+	val = OUTPUT_IFE_EN | INTERNAL_CSID;
+	writel(val, csid->camss->csid_wrapper_base + CSID_IO_PATH_CFG0(csid->id));
+}
+
+static void __csid_configure_rdi_stream(struct csid_device *csid, u8 enable, u8 port, u8 vc)
+{
+	u32 val;
+	u8 lane_cnt = csid->phy.lane_cnt;
+	/* Source pads matching RDI channels on hardware. Pad 1 -> RDI0, Pad 2 -> RDI1, etc. */
+	struct v4l2_mbus_framefmt *input_format = &csid->fmt[MSM_CSID_PAD_FIRST_SRC + port];
+	const struct csid_format_info *format = csid_get_fmt_entry(csid->res->formats->formats,
+								   csid->res->formats->nformats,
+								   input_format->code);
+
+	if (!lane_cnt)
+		lane_cnt = 4;
+
+	/*
+	 * DT_ID is a two bit bitfield that is concatenated with
+	 * the four least significant bits of the five bit VC
+	 * bitfield to generate an internal CID value.
+	 *
+	 * CSID_RDI_CFG0(port)
+	 * DT_ID : 28:27
+	 * VC    : 26:22
+	 * DT    : 21:16
+	 *
+	 * CID   : VC 3:0 << 2 | DT_ID 1:0
+	 */
+	u8 dt_id = port & 0x03;
+
+	val = RDI_CFG0_TIMESTAMP_EN;
+	val |= RDI_CFG0_TIMESTAMP_STB_SEL;
+	/* note: for non-RDI path, this should be format->decode_format */
+	val |= DECODE_FORMAT_PAYLOAD_ONLY << RDI_CFG0_DECODE_FORMAT;
+	val |= vc << RDI_CFG0_VC;
+	val |= format->data_type << RDI_CFG0_DT;
+	val |= dt_id << RDI_CFG0_DT_ID;
+
+	writel(val, csid->base + CSID_RDI_CFG0(port));
+
+	val = RDI_CFG1_PACKING_FORMAT_MIPI;
+	val |= RDI_CFG1_PIX_STORE;
+	val |= RDI_CFG1_DROP_H_EN;
+	val |= RDI_CFG1_DROP_V_EN;
+	val |= RDI_CFG1_CROP_H_EN;
+	val |= RDI_CFG1_CROP_V_EN;
+
+	writel(val, csid->base + CSID_RDI_CFG1(port));
+
+	val = 0;
+	writel(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PERIOD(port));
+
+	val = 1;
+	writel(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PATTERN(port));
+
+	val = 0;
+	writel(val, csid->base + CSID_RDI_CTRL(port));
+
+	val = readl(csid->base + CSID_RDI_CFG0(port));
+
+	if (enable)
+		val |= RDI_CFG0_EN;
+	writel(val, csid->base + CSID_RDI_CFG0(port));
+}
+
+static void csid_configure_stream(struct csid_device *csid, u8 enable)
+{
+	u8 i;
+
+	__csid_configure_wrapper(csid);
+
+	/* Loop through all enabled ports and configure a stream for each */
+	for (i = 0; i < MSM_CSID_MAX_SRC_STREAMS; i++)
+		if (csid->phy.en_vc & BIT(i)) {
+			__csid_configure_rdi_stream(csid, enable, i, 0);
+			__csid_configure_rx(csid, &csid->phy, 0);
+			__csid_ctrl_rdi(csid, enable, i);
+		}
+}
+
+static int csid_configure_testgen_pattern(struct csid_device *csid, s32 val)
+{
+	return 0;
+}
+
+static void csid_subdev_reg_update(struct csid_device *csid, int port_id, bool clear)
+{
+	if (clear) {
+		csid->reg_update &= ~CSID_RUP_AUP_RDI(port_id);
+	} else {
+		csid->reg_update |= CSID_RUP_AUP_RDI(port_id);
+		writel(csid->reg_update, csid->base + CSID_RUP_AUP_CMD);
+	}
+}
+
+/*
+ * csid_isr - CSID module interrupt service routine
+ * @irq: Interrupt line
+ * @dev: CSID device
+ *
+ * Return IRQ_HANDLED on success
+ */
+static irqreturn_t csid_isr(int irq, void *dev)
+{
+	struct csid_device *csid = dev;
+	u32 val, buf_done_val;
+	u8 reset_done;
+	int i;
+
+	val = readl(csid->base + CSID_TOP_IRQ_STATUS);
+	writel(val, csid->base + CSID_TOP_IRQ_CLEAR);
+	reset_done = val & TOP_IRQ_STATUS_RESET_DONE;
+
+	val = readl(csid->base + CSID_CSI2_RX_IRQ_STATUS);
+	writel(val, csid->base + CSID_CSI2_RX_IRQ_CLEAR);
+
+	buf_done_val = readl(csid->base + CSID_BUF_DONE_IRQ_STATUS);
+	writel(buf_done_val, csid->base + CSID_BUF_DONE_IRQ_CLEAR);
+
+	/* Read and clear IRQ status for each enabled RDI channel */
+	for (i = 0; i < MSM_CSID_MAX_SRC_STREAMS; i++)
+		if (csid->phy.en_vc & BIT(i)) {
+			val = readl(csid->base + CSID_CSI2_RDIN_IRQ_STATUS(i));
+			writel(val, csid->base + CSID_CSI2_RDIN_IRQ_CLEAR(i));
+
+			if (val & RUP_DONE_IRQ_STATUS)
+				/* clear the reg update bit */
+				csid_subdev_reg_update(csid, i, true);
+
+			if (buf_done_val & BIT(BUF_DONE_IRQ_STATUS_RDI_OFFSET + i)) {
+				/*
+				 * For Titan Gen3, bus done and RUP IRQ have been moved to
+				 * CSID from VFE. Once CSID received bus done, need notify
+				 * VFE of this event. Trigger VFE to handle bus done process.
+				 */
+				camss_buf_done(csid->camss, csid->id, i);
+			}
+		}
+
+	val = IRQ_CMD_CLEAR;
+	writel(val, csid->base + CSID_IRQ_CMD);
+
+	if (reset_done)
+		complete(&csid->reset_complete);
+
+	return IRQ_HANDLED;
+}
+
+/*
+ * csid_reset - Trigger reset on CSID module and wait to complete
+ * @csid: CSID device
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+static int csid_reset(struct csid_device *csid)
+{
+	unsigned long time;
+	u32 val;
+	int i;
+
+	reinit_completion(&csid->reset_complete);
+
+	writel(1, csid->base + CSID_TOP_IRQ_CLEAR);
+	writel(1, csid->base + CSID_IRQ_CMD);
+	writel(1, csid->base + CSID_TOP_IRQ_MASK);
+
+	for (i = 0; i < MSM_CSID_MAX_SRC_STREAMS; i++)
+		if (csid->phy.en_vc & BIT(i)) {
+			writel(BIT(BUF_DONE_IRQ_STATUS_RDI_OFFSET + i),
+			       csid->base + CSID_BUF_DONE_IRQ_CLEAR);
+			writel(IRQ_CMD_CLEAR, csid->base + CSID_IRQ_CMD);
+			writel(BIT(BUF_DONE_IRQ_STATUS_RDI_OFFSET + i),
+			       csid->base + CSID_BUF_DONE_IRQ_MASK);
+		}
+
+	/* preserve registers */
+	val = RST_LOCATION | RST_MODE;
+	writel(val, csid->base + CSID_RST_CFG);
+
+	val = SELECT_HW_RST | SELECT_IRQ_RST;
+	writel(val, csid->base + CSID_RST_CMD);
+
+	time = wait_for_completion_timeout(&csid->reset_complete,
+					   msecs_to_jiffies(CSID_RESET_TIMEOUT_MS));
+	if (!time) {
+		dev_err(csid->camss->dev, "CSID reset timeout\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static void csid_subdev_init(struct csid_device *csid)
+{
+	csid->testgen.nmodes = CSID_PAYLOAD_MODE_DISABLED;
+}
+
+const struct csid_hw_ops csid_ops_gen3 = {
+	.configure_stream = csid_configure_stream,
+	.configure_testgen_pattern = csid_configure_testgen_pattern,
+	.hw_version = csid_hw_version,
+	.isr = csid_isr,
+	.reset = csid_reset,
+	.src_pad_code = csid_src_pad_code,
+	.subdev_init = csid_subdev_init,
+	.reg_update = csid_subdev_reg_update,
+};

linux-7.2.3/drivers/media/platform/qcom/camss/camss-csid-gen3.h

@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * camss-csid-gen3.h
+ *
+ * Qualcomm MSM Camera Subsystem - CSID (CSI Decoder) Module Generation 3
+ *
+ * Copyright (c) 2024 Qualcomm Technologies, Inc.
+ */
+#ifndef __QC_MSM_CAMSS_CSID_GEN3_H__
+#define __QC_MSM_CAMSS_CSID_GEN3_H__
+
+#define DECODE_FORMAT_UNCOMPRESSED_8_BIT	0x1
+#define DECODE_FORMAT_UNCOMPRESSED_10_BIT	0x2
+#define DECODE_FORMAT_UNCOMPRESSED_12_BIT	0x3
+#define DECODE_FORMAT_UNCOMPRESSED_14_BIT	0x4
+#define DECODE_FORMAT_UNCOMPRESSED_16_BIT	0x5
+#define DECODE_FORMAT_UNCOMPRESSED_20_BIT	0x6
+#define DECODE_FORMAT_UNCOMPRESSED_24_BIT	0x7
+#define DECODE_FORMAT_PAYLOAD_ONLY		0xf
+
+#define PLAIN_FORMAT_PLAIN8	0x0 /* supports DPCM, UNCOMPRESSED_6/8_BIT */
+#define PLAIN_FORMAT_PLAIN16	0x1 /* supports DPCM, UNCOMPRESSED_10/16_BIT */
+#define PLAIN_FORMAT_PLAIN32	0x2 /* supports UNCOMPRESSED_20_BIT */
+
+#endif /* __QC_MSM_CAMSS_CSID_GEN3_H__ */

linux-7.2.3/drivers/media/platform/qcom/camss/camss-csid.h

@@ -0,0 +1,251 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * camss-csid.h
+ *
+ * Qualcomm MSM Camera Subsystem - CSID (CSI Decoder) Module
+ *
+ * Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2015-2018 Linaro Ltd.
+ */
+#ifndef QC_MSM_CAMSS_CSID_H
+#define QC_MSM_CAMSS_CSID_H
+
+#include <linux/clk.h>
+#include <linux/interrupt.h>
+#include <media/media-entity.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-mediabus.h>
+#include <media/v4l2-subdev.h>
+
+#define MSM_CSID_PAD_SINK 0
+#define MSM_CSID_PAD_FIRST_SRC 1
+#define MSM_CSID_PADS_NUM 5
+
+#define MSM_CSID_PAD_SRC (MSM_CSID_PAD_FIRST_SRC)
+
+/* CSID hardware can demultiplex up to 4 outputs */
+#define MSM_CSID_MAX_SRC_STREAMS	4
+
+#define CSID_RESET_TIMEOUT_MS 500
+
+enum csid_testgen_mode {
+	CSID_PAYLOAD_MODE_DISABLED = 0,
+	CSID_PAYLOAD_MODE_INCREMENTING = 1,
+	CSID_PAYLOAD_MODE_ALTERNATING_55_AA = 2,
+	CSID_PAYLOAD_MODE_ALL_ZEROES = 3,
+	CSID_PAYLOAD_MODE_ALL_ONES = 4,
+	CSID_PAYLOAD_MODE_RANDOM = 5,
+	CSID_PAYLOAD_MODE_USER_SPECIFIED = 6,
+	CSID_PAYLOAD_MODE_NUM_SUPPORTED_GEN1 = 6, /* excluding disabled */
+	CSID_PAYLOAD_MODE_COMPLEX_PATTERN = 7,
+	CSID_PAYLOAD_MODE_COLOR_BOX = 8,
+	CSID_PAYLOAD_MODE_COLOR_BARS = 9,
+	CSID_PAYLOAD_MODE_NUM_SUPPORTED_GEN2 = 9, /* excluding disabled */
+};
+
+struct csid_format_info {
+	u32 code;
+	u8 data_type;
+	u8 decode_format;
+	u8 bpp;
+	u8 spp; /* bus samples per pixel */
+};
+
+struct csid_formats {
+	unsigned int nformats;
+	const struct csid_format_info *formats;
+};
+
+struct csid_testgen_config {
+	enum csid_testgen_mode mode;
+	const char * const*modes;
+	u8 nmodes;
+	u8 enabled;
+};
+
+struct csid_phy_config {
+	u8 csiphy_id;
+	u8 lane_cnt;
+	u32 lane_assign;
+	u32 en_vc;
+	u8 need_vc_update;
+};
+
+struct csid_device;
+
+struct csid_hw_ops {
+	/*
+	 * configure_stream - Configures and starts CSID input stream
+	 * @csid: CSID device
+	 */
+	void (*configure_stream)(struct csid_device *csid, u8 enable);
+
+	/*
+	 * configure_testgen_pattern - Validates and configures output pattern mode
+	 * of test pattern generator
+	 * @csid: CSID device
+	 */
+	int (*configure_testgen_pattern)(struct csid_device *csid, s32 val);
+
+	/*
+	 * hw_version - Read hardware version register from hardware
+	 * @csid: CSID device
+	 */
+	u32 (*hw_version)(struct csid_device *csid);
+
+	/*
+	 * isr - CSID module interrupt service routine
+	 * @irq: Interrupt line
+	 * @dev: CSID device
+	 *
+	 * Return IRQ_HANDLED on success
+	 */
+	irqreturn_t (*isr)(int irq, void *dev);
+
+	/*
+	 * reset - Trigger reset on CSID module and wait to complete
+	 * @csid: CSID device
+	 *
+	 * Return 0 on success or a negative error code otherwise
+	 */
+	int (*reset)(struct csid_device *csid);
+
+	/*
+	 * src_pad_code - Pick an output/src format based on the input/sink format
+	 * @csid: CSID device
+	 * @sink_code: The sink format of the input
+	 * @match_format_idx: Request preferred index, as defined by subdevice csid_format.
+	 *	Set @match_code to 0 if used.
+	 * @match_code: Request preferred code, set @match_format_idx to 0 if used
+	 *
+	 * Return 0 on failure or src format code otherwise
+	 */
+	u32 (*src_pad_code)(struct csid_device *csid, u32 sink_code,
+			    unsigned int match_format_idx, u32 match_code);
+
+	/*
+	 * subdev_init - Initialize CSID device according for hardware revision
+	 * @csid: CSID device
+	 */
+	void (*subdev_init)(struct csid_device *csid);
+
+	/*
+	 * reg_update - receive message from other sub device
+	 * @csid: CSID device
+	 * @port_id: Port id
+	 * @is_clear: Indicate if it is clearing reg update or setting reg update
+	 */
+	void (*reg_update)(struct csid_device *csid, int port_id, bool is_clear);
+};
+
+struct csid_subdev_resources {
+	bool is_lite;
+	const struct csid_hw_ops *hw_ops;
+	const struct parent_dev_ops *parent_dev_ops;
+	const struct csid_formats *formats;
+};
+
+struct csid_device {
+	struct camss *camss;
+	u8 id;
+	struct v4l2_subdev subdev;
+	struct media_pad pads[MSM_CSID_PADS_NUM];
+	void __iomem *base;
+	u32 irq;
+	char irq_name[30];
+	u32 reg_update;
+	struct camss_clock *clock;
+	int nclocks;
+	struct regulator_bulk_data *supplies;
+	int num_supplies;
+	struct completion reset_complete;
+	struct csid_testgen_config testgen;
+	bool tpg_linked;
+	struct csid_phy_config phy;
+	struct v4l2_mbus_framefmt fmt[MSM_CSID_PADS_NUM];
+	struct v4l2_ctrl_handler ctrls;
+	struct v4l2_ctrl *testgen_mode;
+	const struct csid_subdev_resources *res;
+};
+
+struct camss_subdev_resources;
+
+/*
+ * csid_find_code - Find a format code in an array using array index or format code
+ * @codes: Array of format codes
+ * @ncodes: Length of @code array
+ * @req_format_idx: Request preferred index, as defined by subdevice csid_format.
+ *	Set @match_code to 0 if used.
+ * @match_code: Request preferred code, set @req_format_idx to 0 if used
+ *
+ * Return 0 on failure or format code otherwise
+ */
+u32 csid_find_code(u32 *codes, unsigned int ncode,
+		   unsigned int match_format_idx, u32 match_code);
+
+/*
+ * csid_get_fmt_entry - Find csid_format_info entry with matching format code
+ * @formats: Array of format csid_format_info entries
+ * @nformats: Length of @nformats array
+ * @code: Desired format code
+ *
+ * Return formats[0] on failure to find code
+ */
+const struct csid_format_info *csid_get_fmt_entry(const struct csid_format_info *formats,
+						  unsigned int nformats,
+						  u32 code);
+
+int msm_csid_subdev_init(struct camss *camss, struct csid_device *csid,
+			 const struct camss_subdev_resources *res, u8 id);
+
+int msm_csid_register_entity(struct csid_device *csid,
+			     struct v4l2_device *v4l2_dev);
+
+void msm_csid_unregister_entity(struct csid_device *csid);
+
+void msm_csid_get_csid_id(struct media_entity *entity, u8 *id);
+
+extern const char * const csid_testgen_modes[];
+
+extern const struct csid_formats csid_formats_4_1;
+extern const struct csid_formats csid_formats_4_7;
+extern const struct csid_formats csid_formats_gen2;
+
+extern const struct csid_hw_ops csid_ops_4_1;
+extern const struct csid_hw_ops csid_ops_4_7;
+extern const struct csid_hw_ops csid_ops_340;
+extern const struct csid_hw_ops csid_ops_680;
+extern const struct csid_hw_ops csid_ops_gen2;
+extern const struct csid_hw_ops csid_ops_gen3;
+
+/*
+ * csid_is_lite - Check if CSID is CSID lite.
+ * @csid: CSID Device
+ *
+ * Return whether CSID is CSID lite
+ */
+bool csid_is_lite(struct csid_device *csid);
+
+/*
+ * csid_hw_version - CSID hardware version query
+ * @csid: CSID device
+ *
+ * Return HW version or error
+ */
+u32 csid_hw_version(struct csid_device *csid);
+
+/*
+ * csid_src_pad_code - Pick an output/src format based on the input/sink format
+ * @csid: CSID device
+ * @sink_code: The sink format of the input
+ * @match_format_idx: Request preferred index, as defined by subdevice csid
+ *                    format. Set @match_code to 0 if used.
+ * @match_code: Request preferred code, set @match_format_idx to 0 if used
+ *
+ * Return 0 on failure or src format code otherwise
+ */
+u32 csid_src_pad_code(struct csid_device *csid, u32 sink_code,
+		      unsigned int match_format_idx, u32 match_code);
+
+#endif /* QC_MSM_CAMSS_CSID_H */

linux-7.2.3/drivers/media/platform/qcom/camss/camss-csiphy-2ph-1-0.c

@@ -0,0 +1,196 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * camss-csiphy-2ph-1-0.c
+ *
+ * Qualcomm MSM Camera Subsystem - CSIPHY Module 2phase v1.0
+ *
+ * Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2016-2018 Linaro Ltd.
+ */
+
+#include "camss-csiphy.h"
+
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+
+#define CAMSS_CSI_PHY_LNn_CFG2(n)		(0x004 + 0x40 * (n))
+#define CAMSS_CSI_PHY_LNn_CFG3(n)		(0x008 + 0x40 * (n))
+#define		CAMSS_CSI_PHY_LN_CLK		1
+#define CAMSS_CSI_PHY_GLBL_RESET		0x140
+#define CAMSS_CSI_PHY_GLBL_PWR_CFG		0x144
+#define CAMSS_CSI_PHY_GLBL_IRQ_CMD		0x164
+#define CAMSS_CSI_PHY_HW_VERSION		0x188
+#define CAMSS_CSI_PHY_INTERRUPT_STATUSn(n)	(0x18c + 0x4 * (n))
+#define CAMSS_CSI_PHY_INTERRUPT_MASKn(n)	(0x1ac + 0x4 * (n))
+#define CAMSS_CSI_PHY_INTERRUPT_CLEARn(n)	(0x1cc + 0x4 * (n))
+#define CAMSS_CSI_PHY_GLBL_T_INIT_CFG0		0x1ec
+#define CAMSS_CSI_PHY_T_WAKEUP_CFG0		0x1f4
+
+static u8 csiphy_get_lane_mask(struct csiphy_lanes_cfg *lane_cfg)
+{
+	u8 lane_mask;
+	int i;
+
+	lane_mask = 1 << CAMSS_CSI_PHY_LN_CLK;
+
+	for (i = 0; i < lane_cfg->num_data; i++)
+		lane_mask |= 1 << lane_cfg->data[i].pos;
+
+	return lane_mask;
+}
+
+static void csiphy_hw_version_read(struct csiphy_device *csiphy,
+				   struct device *dev)
+{
+	u8 hw_version = readl_relaxed(csiphy->base +
+				      CAMSS_CSI_PHY_HW_VERSION);
+
+	dev_dbg(dev, "CSIPHY HW Version = 0x%02x\n", hw_version);
+}
+
+/*
+ * csiphy_reset - Perform software reset on CSIPHY module
+ * @csiphy: CSIPHY device
+ */
+static void csiphy_reset(struct csiphy_device *csiphy)
+{
+	writel_relaxed(0x1, csiphy->base + CAMSS_CSI_PHY_GLBL_RESET);
+	usleep_range(5000, 8000);
+	writel_relaxed(0x0, csiphy->base + CAMSS_CSI_PHY_GLBL_RESET);
+}
+
+/*
+ * csiphy_settle_cnt_calc - Calculate settle count value
+ *
+ * Helper function to calculate settle count value. This is
+ * based on the CSI2 T_hs_settle parameter which in turn
+ * is calculated based on the CSI2 transmitter link frequency.
+ *
+ * Return settle count value or 0 if the CSI2 link frequency
+ * is not available
+ */
+static u8 csiphy_settle_cnt_calc(s64 link_freq, u32 timer_clk_rate)
+{
+	u32 ui; /* ps */
+	u32 timer_period; /* ps */
+	u32 t_hs_prepare_max; /* ps */
+	u32 t_hs_prepare_zero_min; /* ps */
+	u32 t_hs_settle; /* ps */
+	u8 settle_cnt;
+
+	if (link_freq <= 0)
+		return 0;
+
+	ui = div_u64(1000000000000LL, link_freq);
+	ui /= 2;
+	t_hs_prepare_max = 85000 + 6 * ui;
+	t_hs_prepare_zero_min = 145000 + 10 * ui;
+	t_hs_settle = (t_hs_prepare_max + t_hs_prepare_zero_min) / 2;
+
+	timer_period = div_u64(1000000000000LL, timer_clk_rate);
+	settle_cnt = t_hs_settle / timer_period - 1;
+
+	return settle_cnt;
+}
+
+static void csiphy_lanes_enable(struct csiphy_device *csiphy,
+				struct csiphy_config *cfg,
+				s64 link_freq, u8 lane_mask)
+{
+	struct csiphy_lanes_cfg *c = &cfg->csi2->lane_cfg;
+	u8 settle_cnt;
+	u8 val, l = 0;
+	int i = 0;
+
+	settle_cnt = csiphy_settle_cnt_calc(link_freq, csiphy->timer_clk_rate);
+
+	writel_relaxed(0x1, csiphy->base +
+		       CAMSS_CSI_PHY_GLBL_T_INIT_CFG0);
+	writel_relaxed(0x1, csiphy->base +
+		       CAMSS_CSI_PHY_T_WAKEUP_CFG0);
+
+	val = 0x1;
+	val |= lane_mask << 1;
+	writel_relaxed(val, csiphy->base + CAMSS_CSI_PHY_GLBL_PWR_CFG);
+
+	val = cfg->combo_mode << 4;
+	writel_relaxed(val, csiphy->base + CAMSS_CSI_PHY_GLBL_RESET);
+
+	for (i = 0; i <= c->num_data; i++) {
+		if (i == c->num_data)
+			l = CAMSS_CSI_PHY_LN_CLK;
+		else
+			l = c->data[i].pos;
+
+		writel_relaxed(0x10, csiphy->base +
+			       CAMSS_CSI_PHY_LNn_CFG2(l));
+		writel_relaxed(settle_cnt, csiphy->base +
+			       CAMSS_CSI_PHY_LNn_CFG3(l));
+		writel_relaxed(0x3f, csiphy->base +
+			       CAMSS_CSI_PHY_INTERRUPT_MASKn(l));
+		writel_relaxed(0x3f, csiphy->base +
+			       CAMSS_CSI_PHY_INTERRUPT_CLEARn(l));
+	}
+}
+
+static void csiphy_lanes_disable(struct csiphy_device *csiphy,
+				 struct csiphy_config *cfg)
+{
+	struct csiphy_lanes_cfg *c = &cfg->csi2->lane_cfg;
+	u8 l = 0;
+	int i = 0;
+
+	for (i = 0; i <= c->num_data; i++) {
+		if (i == c->num_data)
+			l = CAMSS_CSI_PHY_LN_CLK;
+		else
+			l = c->data[i].pos;
+
+		writel_relaxed(0x0, csiphy->base +
+			       CAMSS_CSI_PHY_LNn_CFG2(l));
+	}
+
+	writel_relaxed(0x0, csiphy->base + CAMSS_CSI_PHY_GLBL_PWR_CFG);
+}
+
+/*
+ * csiphy_isr - CSIPHY module interrupt handler
+ * @irq: Interrupt line
+ * @dev: CSIPHY device
+ *
+ * Return IRQ_HANDLED on success
+ */
+static irqreturn_t csiphy_isr(int irq, void *dev)
+{
+	struct csiphy_device *csiphy = dev;
+	u8 i;
+
+	for (i = 0; i < 8; i++) {
+		u8 val = readl_relaxed(csiphy->base +
+				       CAMSS_CSI_PHY_INTERRUPT_STATUSn(i));
+		writel_relaxed(val, csiphy->base +
+			       CAMSS_CSI_PHY_INTERRUPT_CLEARn(i));
+		writel_relaxed(0x1, csiphy->base + CAMSS_CSI_PHY_GLBL_IRQ_CMD);
+		writel_relaxed(0x0, csiphy->base + CAMSS_CSI_PHY_GLBL_IRQ_CMD);
+		writel_relaxed(0x0, csiphy->base +
+			       CAMSS_CSI_PHY_INTERRUPT_CLEARn(i));
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int csiphy_init(struct csiphy_device *csiphy)
+{
+	return 0;
+}
+
+const struct csiphy_hw_ops csiphy_ops_2ph_1_0 = {
+	.get_lane_mask = csiphy_get_lane_mask,
+	.hw_version_read = csiphy_hw_version_read,
+	.reset = csiphy_reset,
+	.lanes_enable = csiphy_lanes_enable,
+	.lanes_disable = csiphy_lanes_disable,
+	.isr = csiphy_isr,
+	.init = csiphy_init,
+};

linux-7.2.3/drivers/media/platform/qcom/camss/camss-csiphy.c

@@ -0,0 +1,833 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * camss-csiphy.c
+ *
+ * Qualcomm MSM Camera Subsystem - CSIPHY Module
+ *
+ * Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2016-2018 Linaro Ltd.
+ */
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <media/media-entity.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-subdev.h>
+
+#include "camss-csiphy.h"
+#include "camss.h"
+
+#define MSM_CSIPHY_NAME "msm_csiphy"
+
+static const struct csiphy_format_info formats_8x16[] = {
+	{ MEDIA_BUS_FMT_UYVY8_1X16, 8 },
+	{ MEDIA_BUS_FMT_VYUY8_1X16, 8 },
+	{ MEDIA_BUS_FMT_YUYV8_1X16, 8 },
+	{ MEDIA_BUS_FMT_YVYU8_1X16, 8 },
+	{ MEDIA_BUS_FMT_SBGGR8_1X8, 8 },
+	{ MEDIA_BUS_FMT_SGBRG8_1X8, 8 },
+	{ MEDIA_BUS_FMT_SGRBG8_1X8, 8 },
+	{ MEDIA_BUS_FMT_SRGGB8_1X8, 8 },
+	{ MEDIA_BUS_FMT_SBGGR10_1X10, 10 },
+	{ MEDIA_BUS_FMT_SGBRG10_1X10, 10 },
+	{ MEDIA_BUS_FMT_SGRBG10_1X10, 10 },
+	{ MEDIA_BUS_FMT_SRGGB10_1X10, 10 },
+	{ MEDIA_BUS_FMT_SBGGR12_1X12, 12 },
+	{ MEDIA_BUS_FMT_SGBRG12_1X12, 12 },
+	{ MEDIA_BUS_FMT_SGRBG12_1X12, 12 },
+	{ MEDIA_BUS_FMT_SRGGB12_1X12, 12 },
+	{ MEDIA_BUS_FMT_Y10_1X10, 10 },
+};
+
+static const struct csiphy_format_info formats_8x96[] = {
+	{ MEDIA_BUS_FMT_UYVY8_1X16, 8 },
+	{ MEDIA_BUS_FMT_VYUY8_1X16, 8 },
+	{ MEDIA_BUS_FMT_YUYV8_1X16, 8 },
+	{ MEDIA_BUS_FMT_YVYU8_1X16, 8 },
+	{ MEDIA_BUS_FMT_SBGGR8_1X8, 8 },
+	{ MEDIA_BUS_FMT_SGBRG8_1X8, 8 },
+	{ MEDIA_BUS_FMT_SGRBG8_1X8, 8 },
+	{ MEDIA_BUS_FMT_SRGGB8_1X8, 8 },
+	{ MEDIA_BUS_FMT_SBGGR10_1X10, 10 },
+	{ MEDIA_BUS_FMT_SGBRG10_1X10, 10 },
+	{ MEDIA_BUS_FMT_SGRBG10_1X10, 10 },
+	{ MEDIA_BUS_FMT_SRGGB10_1X10, 10 },
+	{ MEDIA_BUS_FMT_SBGGR12_1X12, 12 },
+	{ MEDIA_BUS_FMT_SGBRG12_1X12, 12 },
+	{ MEDIA_BUS_FMT_SGRBG12_1X12, 12 },
+	{ MEDIA_BUS_FMT_SRGGB12_1X12, 12 },
+	{ MEDIA_BUS_FMT_SBGGR14_1X14, 14 },
+	{ MEDIA_BUS_FMT_SGBRG14_1X14, 14 },
+	{ MEDIA_BUS_FMT_SGRBG14_1X14, 14 },
+	{ MEDIA_BUS_FMT_SRGGB14_1X14, 14 },
+	{ MEDIA_BUS_FMT_Y10_1X10, 10 },
+};
+
+static const struct csiphy_format_info formats_sdm845[] = {
+	{ MEDIA_BUS_FMT_UYVY8_1X16, 8 },
+	{ MEDIA_BUS_FMT_VYUY8_1X16, 8 },
+	{ MEDIA_BUS_FMT_YUYV8_1X16, 8 },
+	{ MEDIA_BUS_FMT_YVYU8_1X16, 8 },
+	{ MEDIA_BUS_FMT_SBGGR8_1X8, 8 },
+	{ MEDIA_BUS_FMT_SGBRG8_1X8, 8 },
+	{ MEDIA_BUS_FMT_SGRBG8_1X8, 8 },
+	{ MEDIA_BUS_FMT_SRGGB8_1X8, 8 },
+	{ MEDIA_BUS_FMT_SBGGR10_1X10, 10 },
+	{ MEDIA_BUS_FMT_SGBRG10_1X10, 10 },
+	{ MEDIA_BUS_FMT_SGRBG10_1X10, 10 },
+	{ MEDIA_BUS_FMT_SRGGB10_1X10, 10 },
+	{ MEDIA_BUS_FMT_SBGGR12_1X12, 12 },
+	{ MEDIA_BUS_FMT_SGBRG12_1X12, 12 },
+	{ MEDIA_BUS_FMT_SGRBG12_1X12, 12 },
+	{ MEDIA_BUS_FMT_SRGGB12_1X12, 12 },
+	{ MEDIA_BUS_FMT_SBGGR14_1X14, 14 },
+	{ MEDIA_BUS_FMT_SGBRG14_1X14, 14 },
+	{ MEDIA_BUS_FMT_SGRBG14_1X14, 14 },
+	{ MEDIA_BUS_FMT_SRGGB14_1X14, 14 },
+	{ MEDIA_BUS_FMT_Y8_1X8, 8 },
+	{ MEDIA_BUS_FMT_Y10_1X10, 10 },
+};
+
+const struct csiphy_formats csiphy_formats_8x16 = {
+	.nformats = ARRAY_SIZE(formats_8x16),
+	.formats = formats_8x16
+};
+
+const struct csiphy_formats csiphy_formats_8x96 = {
+	.nformats = ARRAY_SIZE(formats_8x96),
+	.formats = formats_8x96
+};
+
+const struct csiphy_formats csiphy_formats_sdm845 = {
+	.nformats = ARRAY_SIZE(formats_sdm845),
+	.formats = formats_sdm845
+};
+
+/*
+ * csiphy_get_bpp - map media bus format to bits per pixel
+ * @formats: supported media bus formats array
+ * @nformats: size of @formats array
+ * @code: media bus format code
+ *
+ * Return number of bits per pixel
+ */
+static u8 csiphy_get_bpp(const struct csiphy_format_info *formats,
+			 unsigned int nformats, u32 code)
+{
+	unsigned int i;
+
+	for (i = 0; i < nformats; i++)
+		if (code == formats[i].code)
+			return formats[i].bpp;
+
+	WARN(1, "Unknown format\n");
+
+	return formats[0].bpp;
+}
+
+/*
+ * csiphy_set_clock_rates - Calculate and set clock rates on CSIPHY module
+ * @csiphy: CSIPHY device
+ */
+static int csiphy_set_clock_rates(struct csiphy_device *csiphy)
+{
+	struct device *dev = csiphy->camss->dev;
+	s64 link_freq;
+	int i, j;
+	int ret;
+
+	u8 bpp = csiphy_get_bpp(csiphy->res->formats->formats, csiphy->res->formats->nformats,
+				csiphy->fmt[MSM_CSIPHY_PAD_SINK].code);
+	u8 num_lanes = csiphy->cfg.csi2->lane_cfg.num_data;
+
+	link_freq = camss_get_link_freq(&csiphy->subdev.entity, bpp, num_lanes);
+	if (link_freq < 0)
+		link_freq  = 0;
+
+	for (i = 0; i < csiphy->nclocks; i++) {
+		struct camss_clock *clock = &csiphy->clock[i];
+
+		if (csiphy->rate_set[i]) {
+			u64 min_rate = link_freq / 4;
+			long round_rate;
+
+			camss_add_clock_margin(&min_rate);
+
+			for (j = 0; j < clock->nfreqs; j++)
+				if (min_rate < clock->freq[j])
+					break;
+
+			if (j == clock->nfreqs) {
+				dev_err(dev,
+					"Pixel clock is too high for CSIPHY\n");
+				return -EINVAL;
+			}
+
+			/* if sensor pixel clock is not available */
+			/* set highest possible CSIPHY clock rate */
+			if (min_rate == 0)
+				j = clock->nfreqs - 1;
+
+			round_rate = clk_round_rate(clock->clk, clock->freq[j]);
+			if (round_rate < 0) {
+				dev_err(dev, "clk round rate failed: %ld\n",
+					round_rate);
+				return -EINVAL;
+			}
+
+			csiphy->timer_clk_rate = round_rate;
+
+			ret = clk_set_rate(clock->clk, csiphy->timer_clk_rate);
+			if (ret < 0) {
+				dev_err(dev, "clk set rate failed: %d\n", ret);
+				return ret;
+			}
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * csiphy_set_power - Power on/off CSIPHY module
+ * @sd: CSIPHY V4L2 subdevice
+ * @on: Requested power state
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+static int csiphy_set_power(struct v4l2_subdev *sd, int on)
+{
+	struct csiphy_device *csiphy = v4l2_get_subdevdata(sd);
+	struct device *dev = csiphy->camss->dev;
+
+	if (on) {
+		int ret;
+
+		ret = pm_runtime_resume_and_get(dev);
+		if (ret < 0)
+			return ret;
+
+		ret = regulator_bulk_enable(csiphy->num_supplies,
+					    csiphy->supplies);
+		if (ret < 0) {
+			pm_runtime_put_sync(dev);
+			return ret;
+		}
+
+		ret = csiphy_set_clock_rates(csiphy);
+		if (ret < 0) {
+			regulator_bulk_disable(csiphy->num_supplies,
+					       csiphy->supplies);
+			pm_runtime_put_sync(dev);
+			return ret;
+		}
+
+		ret = camss_enable_clocks(csiphy->nclocks, csiphy->clock, dev);
+		if (ret < 0) {
+			regulator_bulk_disable(csiphy->num_supplies,
+					       csiphy->supplies);
+			pm_runtime_put_sync(dev);
+			return ret;
+		}
+
+		enable_irq(csiphy->irq);
+
+		csiphy->res->hw_ops->reset(csiphy);
+
+		csiphy->res->hw_ops->hw_version_read(csiphy, dev);
+	} else {
+		disable_irq(csiphy->irq);
+
+		camss_disable_clocks(csiphy->nclocks, csiphy->clock);
+
+		regulator_bulk_disable(csiphy->num_supplies, csiphy->supplies);
+
+		pm_runtime_put_sync(dev);
+	}
+
+	return 0;
+}
+
+/*
+ * csiphy_stream_on - Enable streaming on CSIPHY module
+ * @csiphy: CSIPHY device
+ *
+ * Helper function to enable streaming on CSIPHY module.
+ * Main configuration of CSIPHY module is also done here.
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+static int csiphy_stream_on(struct csiphy_device *csiphy)
+{
+	struct csiphy_config *cfg = &csiphy->cfg;
+	s64 link_freq;
+	u8 lane_mask = csiphy->res->hw_ops->get_lane_mask(&cfg->csi2->lane_cfg);
+	u8 bpp = csiphy_get_bpp(csiphy->res->formats->formats, csiphy->res->formats->nformats,
+				csiphy->fmt[MSM_CSIPHY_PAD_SINK].code);
+	u8 num_lanes = csiphy->cfg.csi2->lane_cfg.num_data;
+	u8 val;
+
+	link_freq = camss_get_link_freq(&csiphy->subdev.entity, bpp, num_lanes);
+
+	if (link_freq < 0) {
+		dev_err(csiphy->camss->dev,
+			"Cannot get CSI2 transmitter's link frequency\n");
+		return -EINVAL;
+	}
+
+	if (csiphy->base_clk_mux) {
+		val = readl_relaxed(csiphy->base_clk_mux);
+		if (cfg->combo_mode && (lane_mask & 0x18) == 0x18) {
+			val &= ~0xf0;
+			val |= cfg->csid_id << 4;
+		} else {
+			val &= ~0xf;
+			val |= cfg->csid_id;
+		}
+		writel_relaxed(val, csiphy->base_clk_mux);
+
+		/* Enforce reg write ordering between clk mux & lane enabling */
+		wmb();
+	}
+
+	csiphy->res->hw_ops->lanes_enable(csiphy, cfg, link_freq, lane_mask);
+
+	return 0;
+}
+
+/*
+ * csiphy_stream_off - Disable streaming on CSIPHY module
+ * @csiphy: CSIPHY device
+ *
+ * Helper function to disable streaming on CSIPHY module
+ */
+static void csiphy_stream_off(struct csiphy_device *csiphy)
+{
+	csiphy->res->hw_ops->lanes_disable(csiphy, &csiphy->cfg);
+}
+
+
+/*
+ * csiphy_set_stream - Enable/disable streaming on CSIPHY module
+ * @sd: CSIPHY V4L2 subdevice
+ * @enable: Requested streaming state
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+static int csiphy_set_stream(struct v4l2_subdev *sd, int enable)
+{
+	struct csiphy_device *csiphy = v4l2_get_subdevdata(sd);
+	int ret = 0;
+
+	if (enable)
+		ret = csiphy_stream_on(csiphy);
+	else
+		csiphy_stream_off(csiphy);
+
+	return ret;
+}
+
+/*
+ * __csiphy_get_format - Get pointer to format structure
+ * @csiphy: CSIPHY device
+ * @sd_state: V4L2 subdev state
+ * @pad: pad from which format is requested
+ * @which: TRY or ACTIVE format
+ *
+ * Return pointer to TRY or ACTIVE format structure
+ */
+static struct v4l2_mbus_framefmt *
+__csiphy_get_format(struct csiphy_device *csiphy,
+		    struct v4l2_subdev_state *sd_state,
+		    unsigned int pad,
+		    enum v4l2_subdev_format_whence which)
+{
+	if (which == V4L2_SUBDEV_FORMAT_TRY)
+		return v4l2_subdev_state_get_format(sd_state, pad);
+
+	return &csiphy->fmt[pad];
+}
+
+/*
+ * csiphy_try_format - Handle try format by pad subdev method
+ * @csiphy: CSIPHY device
+ * @sd_state: V4L2 subdev state
+ * @pad: pad on which format is requested
+ * @fmt: pointer to v4l2 format structure
+ * @which: wanted subdev format
+ */
+static void csiphy_try_format(struct csiphy_device *csiphy,
+			      struct v4l2_subdev_state *sd_state,
+			      unsigned int pad,
+			      struct v4l2_mbus_framefmt *fmt,
+			      enum v4l2_subdev_format_whence which)
+{
+	unsigned int i;
+
+	switch (pad) {
+	case MSM_CSIPHY_PAD_SINK:
+		/* Set format on sink pad */
+
+		for (i = 0; i < csiphy->res->formats->nformats; i++)
+			if (fmt->code == csiphy->res->formats->formats[i].code)
+				break;
+
+		/* If not found, use UYVY as default */
+		if (i >= csiphy->res->formats->nformats)
+			fmt->code = MEDIA_BUS_FMT_UYVY8_1X16;
+
+		fmt->width = clamp_t(u32, fmt->width, 1, 8191);
+		fmt->height = clamp_t(u32, fmt->height, 1, 8191);
+
+		fmt->field = V4L2_FIELD_NONE;
+		fmt->colorspace = V4L2_COLORSPACE_SRGB;
+
+		break;
+
+	case MSM_CSIPHY_PAD_SRC:
+		/* Set and return a format same as sink pad */
+
+		*fmt = *__csiphy_get_format(csiphy, sd_state,
+					    MSM_CSID_PAD_SINK,
+					    which);
+
+		break;
+	}
+}
+
+/*
+ * csiphy_enum_mbus_code - Handle pixel format enumeration
+ * @sd: CSIPHY V4L2 subdevice
+ * @sd_state: V4L2 subdev state
+ * @code: pointer to v4l2_subdev_mbus_code_enum structure
+ * return -EINVAL or zero on success
+ */
+static int csiphy_enum_mbus_code(struct v4l2_subdev *sd,
+				 struct v4l2_subdev_state *sd_state,
+				 struct v4l2_subdev_mbus_code_enum *code)
+{
+	struct csiphy_device *csiphy = v4l2_get_subdevdata(sd);
+	struct v4l2_mbus_framefmt *format;
+
+	if (code->pad == MSM_CSIPHY_PAD_SINK) {
+		if (code->index >= csiphy->res->formats->nformats)
+			return -EINVAL;
+
+		code->code = csiphy->res->formats->formats[code->index].code;
+	} else {
+		if (code->index > 0)
+			return -EINVAL;
+
+		format = __csiphy_get_format(csiphy, sd_state,
+					     MSM_CSIPHY_PAD_SINK,
+					     code->which);
+
+		code->code = format->code;
+	}
+
+	return 0;
+}
+
+/*
+ * csiphy_enum_frame_size - Handle frame size enumeration
+ * @sd: CSIPHY V4L2 subdevice
+ * @sd_state: V4L2 subdev state
+ * @fse: pointer to v4l2_subdev_frame_size_enum structure
+ * return -EINVAL or zero on success
+ */
+static int csiphy_enum_frame_size(struct v4l2_subdev *sd,
+				  struct v4l2_subdev_state *sd_state,
+				  struct v4l2_subdev_frame_size_enum *fse)
+{
+	struct csiphy_device *csiphy = v4l2_get_subdevdata(sd);
+	struct v4l2_mbus_framefmt format;
+
+	if (fse->index != 0)
+		return -EINVAL;
+
+	format.code = fse->code;
+	format.width = 1;
+	format.height = 1;
+	csiphy_try_format(csiphy, sd_state, fse->pad, &format, fse->which);
+	fse->min_width = format.width;
+	fse->min_height = format.height;
+
+	if (format.code != fse->code)
+		return -EINVAL;
+
+	format.code = fse->code;
+	format.width = -1;
+	format.height = -1;
+	csiphy_try_format(csiphy, sd_state, fse->pad, &format, fse->which);
+	fse->max_width = format.width;
+	fse->max_height = format.height;
+
+	return 0;
+}
+
+/*
+ * csiphy_get_format - Handle get format by pads subdev method
+ * @sd: CSIPHY V4L2 subdevice
+ * @sd_state: V4L2 subdev state
+ * @fmt: pointer to v4l2 subdev format structure
+ *
+ * Return -EINVAL or zero on success
+ */
+static int csiphy_get_format(struct v4l2_subdev *sd,
+			     struct v4l2_subdev_state *sd_state,
+			     struct v4l2_subdev_format *fmt)
+{
+	struct csiphy_device *csiphy = v4l2_get_subdevdata(sd);
+	struct v4l2_mbus_framefmt *format;
+
+	format = __csiphy_get_format(csiphy, sd_state, fmt->pad, fmt->which);
+	if (format == NULL)
+		return -EINVAL;
+
+	fmt->format = *format;
+
+	return 0;
+}
+
+/*
+ * csiphy_set_format - Handle set format by pads subdev method
+ * @sd: CSIPHY V4L2 subdevice
+ * @sd_state: V4L2 subdev state
+ * @fmt: pointer to v4l2 subdev format structure
+ *
+ * Return -EINVAL or zero on success
+ */
+static int csiphy_set_format(struct v4l2_subdev *sd,
+			     struct v4l2_subdev_state *sd_state,
+			     struct v4l2_subdev_format *fmt)
+{
+	struct csiphy_device *csiphy = v4l2_get_subdevdata(sd);
+	struct v4l2_mbus_framefmt *format;
+
+	format = __csiphy_get_format(csiphy, sd_state, fmt->pad, fmt->which);
+	if (format == NULL)
+		return -EINVAL;
+
+	csiphy_try_format(csiphy, sd_state, fmt->pad, &fmt->format,
+			  fmt->which);
+	*format = fmt->format;
+
+	/* Propagate the format from sink to source */
+	if (fmt->pad == MSM_CSIPHY_PAD_SINK) {
+		format = __csiphy_get_format(csiphy, sd_state,
+					     MSM_CSIPHY_PAD_SRC,
+					     fmt->which);
+
+		*format = fmt->format;
+		csiphy_try_format(csiphy, sd_state, MSM_CSIPHY_PAD_SRC,
+				  format,
+				  fmt->which);
+	}
+
+	return 0;
+}
+
+/*
+ * csiphy_init_formats - Initialize formats on all pads
+ * @sd: CSIPHY V4L2 subdevice
+ * @fh: V4L2 subdev file handle
+ *
+ * Initialize all pad formats with default values.
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+static int csiphy_init_formats(struct v4l2_subdev *sd,
+			       struct v4l2_subdev_fh *fh)
+{
+	struct v4l2_subdev_format format = {
+		.pad = MSM_CSIPHY_PAD_SINK,
+		.which = fh ? V4L2_SUBDEV_FORMAT_TRY :
+			      V4L2_SUBDEV_FORMAT_ACTIVE,
+		.format = {
+			.code = MEDIA_BUS_FMT_UYVY8_1X16,
+			.width = 1920,
+			.height = 1080
+		}
+	};
+
+	return csiphy_set_format(sd, fh ? fh->state : NULL, &format);
+}
+
+static bool __printf(2, 3)
+csiphy_match_clock_name(const char *clock_name, const char *format, ...)
+{
+	char name[16]; /* csiphyXXX_timer\0 */
+	va_list args;
+
+	va_start(args, format);
+	vsnprintf(name, sizeof(name), format, args);
+	va_end(args);
+
+	return !strcmp(clock_name, name);
+}
+
+/*
+ * msm_csiphy_subdev_init - Initialize CSIPHY device structure and resources
+ * @csiphy: CSIPHY device
+ * @res: CSIPHY module resources table
+ * @id: CSIPHY module id
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+int msm_csiphy_subdev_init(struct camss *camss,
+			   struct csiphy_device *csiphy,
+			   const struct camss_subdev_resources *res, u8 id)
+{
+	struct device *dev = camss->dev;
+	struct platform_device *pdev = to_platform_device(dev);
+	int i, j;
+	int ret;
+
+	csiphy->camss = camss;
+	csiphy->id = id;
+	csiphy->cfg.combo_mode = 0;
+	csiphy->res = &res->csiphy;
+
+	ret = csiphy->res->hw_ops->init(csiphy);
+	if (ret)
+		return ret;
+
+	/* Memory */
+
+	csiphy->base = devm_platform_ioremap_resource_byname(pdev, res->reg[0]);
+	if (IS_ERR(csiphy->base))
+		return PTR_ERR(csiphy->base);
+
+	if (camss->res->version == CAMSS_8x16 ||
+	    camss->res->version == CAMSS_8x39 ||
+	    camss->res->version == CAMSS_8x53 ||
+	    camss->res->version == CAMSS_8x96) {
+		csiphy->base_clk_mux =
+			devm_platform_ioremap_resource_byname(pdev, res->reg[1]);
+		if (IS_ERR(csiphy->base_clk_mux))
+			return PTR_ERR(csiphy->base_clk_mux);
+	} else {
+		csiphy->base_clk_mux = NULL;
+	}
+
+	/* Interrupt */
+
+	ret = platform_get_irq_byname(pdev, res->interrupt[0]);
+	if (ret < 0)
+		return ret;
+
+	csiphy->irq = ret;
+	snprintf(csiphy->irq_name, sizeof(csiphy->irq_name), "%s_%s%d",
+		 dev_name(dev), MSM_CSIPHY_NAME, csiphy->id);
+
+	ret = devm_request_irq(dev, csiphy->irq, csiphy->res->hw_ops->isr,
+			       IRQF_TRIGGER_RISING | IRQF_NO_AUTOEN,
+			       csiphy->irq_name, csiphy);
+	if (ret < 0) {
+		dev_err(dev, "request_irq failed: %d\n", ret);
+		return ret;
+	}
+
+	/* Clocks */
+
+	csiphy->nclocks = 0;
+	while (res->clock[csiphy->nclocks])
+		csiphy->nclocks++;
+
+	csiphy->clock = devm_kcalloc(dev,
+				     csiphy->nclocks, sizeof(*csiphy->clock),
+				     GFP_KERNEL);
+	if (!csiphy->clock)
+		return -ENOMEM;
+
+	csiphy->rate_set = devm_kcalloc(dev,
+					csiphy->nclocks,
+					sizeof(*csiphy->rate_set),
+					GFP_KERNEL);
+	if (!csiphy->rate_set)
+		return -ENOMEM;
+
+	for (i = 0; i < csiphy->nclocks; i++) {
+		struct camss_clock *clock = &csiphy->clock[i];
+
+		clock->clk = devm_clk_get(dev, res->clock[i]);
+		if (IS_ERR(clock->clk))
+			return PTR_ERR(clock->clk);
+
+		clock->name = res->clock[i];
+
+		clock->nfreqs = 0;
+		while (res->clock_rate[i][clock->nfreqs])
+			clock->nfreqs++;
+
+		if (!clock->nfreqs) {
+			clock->freq = NULL;
+			continue;
+		}
+
+		clock->freq = devm_kcalloc(dev,
+					   clock->nfreqs,
+					   sizeof(*clock->freq),
+					   GFP_KERNEL);
+		if (!clock->freq)
+			return -ENOMEM;
+
+		for (j = 0; j < clock->nfreqs; j++)
+			clock->freq[j] = res->clock_rate[i][j];
+
+		csiphy->rate_set[i] = csiphy_match_clock_name(clock->name,
+							      "csiphy%d_timer",
+							      csiphy->id);
+		if (csiphy->rate_set[i])
+			continue;
+
+		if (camss->res->version == CAMSS_660) {
+			csiphy->rate_set[i] = csiphy_match_clock_name(clock->name,
+								      "csi%d_phy",
+								       csiphy->id);
+			if (csiphy->rate_set[i])
+				continue;
+		}
+
+		csiphy->rate_set[i] = csiphy_match_clock_name(clock->name, "csiphy%d", csiphy->id);
+	}
+
+	/* CSIPHY supplies */
+	for (i = 0; i < ARRAY_SIZE(res->regulators); i++) {
+		if (res->regulators[i].supply)
+			csiphy->num_supplies++;
+	}
+
+	if (csiphy->num_supplies > 0)
+		ret = devm_regulator_bulk_get_const(camss->dev, csiphy->num_supplies,
+						    res->regulators, &csiphy->supplies);
+	return ret;
+}
+
+/*
+ * csiphy_link_setup - Setup CSIPHY connections
+ * @entity: Pointer to media entity structure
+ * @local: Pointer to local pad
+ * @remote: Pointer to remote pad
+ * @flags: Link flags
+ *
+ * Rreturn 0 on success
+ */
+static int csiphy_link_setup(struct media_entity *entity,
+			     const struct media_pad *local,
+			     const struct media_pad *remote, u32 flags)
+{
+	if ((local->flags & MEDIA_PAD_FL_SOURCE) &&
+	    (flags & MEDIA_LNK_FL_ENABLED)) {
+		struct v4l2_subdev *sd;
+		struct csiphy_device *csiphy;
+		struct csid_device *csid;
+
+		if (media_pad_remote_pad_first(local))
+			return -EBUSY;
+
+		sd = media_entity_to_v4l2_subdev(entity);
+		csiphy = v4l2_get_subdevdata(sd);
+
+		sd = media_entity_to_v4l2_subdev(remote->entity);
+		csid = v4l2_get_subdevdata(sd);
+
+		csiphy->cfg.csid_id = csid->id;
+	}
+
+	return 0;
+}
+
+static const struct v4l2_subdev_core_ops csiphy_core_ops = {
+	.s_power = csiphy_set_power,
+};
+
+static const struct v4l2_subdev_video_ops csiphy_video_ops = {
+	.s_stream = csiphy_set_stream,
+};
+
+static const struct v4l2_subdev_pad_ops csiphy_pad_ops = {
+	.enum_mbus_code = csiphy_enum_mbus_code,
+	.enum_frame_size = csiphy_enum_frame_size,
+	.get_fmt = csiphy_get_format,
+	.set_fmt = csiphy_set_format,
+};
+
+static const struct v4l2_subdev_ops csiphy_v4l2_ops = {
+	.core = &csiphy_core_ops,
+	.video = &csiphy_video_ops,
+	.pad = &csiphy_pad_ops,
+};
+
+static const struct v4l2_subdev_internal_ops csiphy_v4l2_internal_ops = {
+	.open = csiphy_init_formats,
+};
+
+static const struct media_entity_operations csiphy_media_ops = {
+	.link_setup = csiphy_link_setup,
+	.link_validate = v4l2_subdev_link_validate,
+};
+
+/*
+ * msm_csiphy_register_entity - Register subdev node for CSIPHY module
+ * @csiphy: CSIPHY device
+ * @v4l2_dev: V4L2 device
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+int msm_csiphy_register_entity(struct csiphy_device *csiphy,
+			       struct v4l2_device *v4l2_dev)
+{
+	struct v4l2_subdev *sd = &csiphy->subdev;
+	struct media_pad *pads = csiphy->pads;
+	struct device *dev = csiphy->camss->dev;
+	int ret;
+
+	v4l2_subdev_init(sd, &csiphy_v4l2_ops);
+	sd->internal_ops = &csiphy_v4l2_internal_ops;
+	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+	snprintf(sd->name, ARRAY_SIZE(sd->name), "%s%d",
+		 MSM_CSIPHY_NAME, csiphy->id);
+	sd->grp_id = CSIPHY_GRP_ID;
+	v4l2_set_subdevdata(sd, csiphy);
+
+	ret = csiphy_init_formats(sd, NULL);
+	if (ret < 0) {
+		dev_err(dev, "Failed to init format: %d\n", ret);
+		return ret;
+	}
+
+	pads[MSM_CSIPHY_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
+	pads[MSM_CSIPHY_PAD_SRC].flags = MEDIA_PAD_FL_SOURCE;
+
+	sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER;
+	sd->entity.ops = &csiphy_media_ops;
+	ret = media_entity_pads_init(&sd->entity, MSM_CSIPHY_PADS_NUM, pads);
+	if (ret < 0) {
+		dev_err(dev, "Failed to init media entity: %d\n", ret);
+		return ret;
+	}
+
+	ret = v4l2_device_register_subdev(v4l2_dev, sd);
+	if (ret < 0) {
+		dev_err(dev, "Failed to register subdev: %d\n", ret);
+		media_entity_cleanup(&sd->entity);
+	}
+
+	return ret;
+}
+
+/*
+ * msm_csiphy_unregister_entity - Unregister CSIPHY module subdev node
+ * @csiphy: CSIPHY device
+ */
+void msm_csiphy_unregister_entity(struct csiphy_device *csiphy)
+{
+	v4l2_device_unregister_subdev(&csiphy->subdev);
+	media_entity_cleanup(&csiphy->subdev.entity);
+}

linux-7.2.3/drivers/media/platform/qcom/camss/camss-csiphy.h

@@ -0,0 +1,137 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * camss-csiphy.h
+ *
+ * Qualcomm MSM Camera Subsystem - CSIPHY Module
+ *
+ * Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2016-2018 Linaro Ltd.
+ */
+#ifndef QC_MSM_CAMSS_CSIPHY_H
+#define QC_MSM_CAMSS_CSIPHY_H
+
+#include <linux/clk.h>
+#include <linux/interrupt.h>
+#include <media/media-entity.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-mediabus.h>
+#include <media/v4l2-subdev.h>
+
+#define MSM_CSIPHY_PAD_SINK 0
+#define MSM_CSIPHY_PAD_SRC 1
+#define MSM_CSIPHY_PADS_NUM 2
+
+#define CSIPHY_GRP_ID 1
+
+struct csiphy_lane {
+	u8 pos;
+	u8 pol;
+};
+
+/**
+ * struct csiphy_lanes_cfg - CSIPHY lanes configuration
+ * @num_data: number of data lanes
+ * @data:     data lanes configuration
+ * @clk:      clock lane configuration (only for D-PHY)
+ */
+struct csiphy_lanes_cfg {
+	int num_data;
+	struct csiphy_lane *data;
+	struct csiphy_lane clk;
+};
+
+struct csiphy_csi2_cfg {
+	struct csiphy_lanes_cfg lane_cfg;
+};
+
+struct csiphy_config {
+	u8 combo_mode;
+	u8 csid_id;
+	struct csiphy_csi2_cfg *csi2;
+};
+
+struct csiphy_format_info {
+	u32 code;
+	u8 bpp;
+};
+
+struct csiphy_formats {
+	unsigned int nformats;
+	const struct csiphy_format_info *formats;
+};
+
+struct csiphy_device;
+
+struct csiphy_hw_ops {
+	/*
+	 * csiphy_get_lane_mask - Calculate CSI2 lane mask configuration parameter
+	 * @lane_cfg - CSI2 lane configuration
+	 *
+	 * Return lane mask
+	 */
+	u8 (*get_lane_mask)(struct csiphy_lanes_cfg *lane_cfg);
+	void (*hw_version_read)(struct csiphy_device *csiphy,
+				struct device *dev);
+	void (*reset)(struct csiphy_device *csiphy);
+	void (*lanes_enable)(struct csiphy_device *csiphy,
+			     struct csiphy_config *cfg,
+			     s64 link_freq, u8 lane_mask);
+	void (*lanes_disable)(struct csiphy_device *csiphy,
+			      struct csiphy_config *cfg);
+	irqreturn_t (*isr)(int irq, void *dev);
+	int (*init)(struct csiphy_device *csiphy);
+};
+
+struct csiphy_subdev_resources {
+	u8 id;
+	const struct csiphy_hw_ops *hw_ops;
+	const struct csiphy_formats *formats;
+};
+
+struct csiphy_device_regs {
+	const struct csiphy_lane_regs *lane_regs;
+	int lane_array_size;
+	u32 offset;
+	u32 common_status_offset;
+};
+
+struct csiphy_device {
+	struct camss *camss;
+	u8 id;
+	struct v4l2_subdev subdev;
+	struct media_pad pads[MSM_CSIPHY_PADS_NUM];
+	void __iomem *base;
+	void __iomem *base_clk_mux;
+	u32 irq;
+	char irq_name[30];
+	struct camss_clock *clock;
+	bool *rate_set;
+	int nclocks;
+	u32 timer_clk_rate;
+	struct regulator_bulk_data *supplies;
+	int num_supplies;
+	struct csiphy_config cfg;
+	struct v4l2_mbus_framefmt fmt[MSM_CSIPHY_PADS_NUM];
+	const struct csiphy_subdev_resources *res;
+	struct csiphy_device_regs *regs;
+};
+
+struct camss_subdev_resources;
+
+int msm_csiphy_subdev_init(struct camss *camss,
+			   struct csiphy_device *csiphy,
+			   const struct camss_subdev_resources *res, u8 id);
+
+int msm_csiphy_register_entity(struct csiphy_device *csiphy,
+			       struct v4l2_device *v4l2_dev);
+
+void msm_csiphy_unregister_entity(struct csiphy_device *csiphy);
+
+extern const struct csiphy_formats csiphy_formats_8x16;
+extern const struct csiphy_formats csiphy_formats_8x96;
+extern const struct csiphy_formats csiphy_formats_sdm845;
+
+extern const struct csiphy_hw_ops csiphy_ops_2ph_1_0;
+extern const struct csiphy_hw_ops csiphy_ops_3ph_1_0;
+
+#endif /* QC_MSM_CAMSS_CSIPHY_H */

linux-7.2.3/drivers/media/platform/qcom/camss/camss-format.c

@@ -0,0 +1,105 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * camss-format.c
+ *
+ * Qualcomm MSM Camera Subsystem - Format helpers
+ *
+ * Copyright (c) 2023, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023 Qualcomm Technologies, Inc.
+ */
+#include <linux/bits.h>
+#include <linux/bug.h>
+#include <linux/errno.h>
+#include <linux/lcm.h>
+
+#include "camss-format.h"
+
+/*
+ * camss_format_get_bpp - Map media bus format to bits per pixel
+ * @formats: supported media bus formats array
+ * @nformats: size of @formats array
+ * @code: media bus format code
+ *
+ * Return number of bits per pixel
+ */
+u8 camss_format_get_bpp(const struct camss_format_info *formats, unsigned int nformats, u32 code)
+{
+	unsigned int i;
+
+	for (i = 0; i < nformats; i++)
+		if (code == formats[i].code)
+			return formats[i].mbus_bpp;
+
+	WARN(1, "Unknown format\n");
+
+	return formats[0].mbus_bpp;
+}
+
+/*
+ * camss_format_get_bpl_alignment - Retrieve required BPL alignment for a given format.
+ * @format: a pointer to the format
+ *
+ * Return the required alignment, in bytes.
+ */
+unsigned int camss_format_get_bpl_alignment(const struct camss_format_info *format)
+{
+	/* Minimal number of bytes required to keep the line length an integer number of pixels */
+	return lcm_not_zero(format->mbus_bpp, BITS_PER_BYTE) / BITS_PER_BYTE;
+}
+
+/*
+ * camss_format_find_code - Find a format code in an array
+ * @code: a pointer to media bus format codes array
+ * @n_code: size of @code array
+ * @index: index of code in the array
+ * @req_code: required code
+ *
+ * Return media bus format code
+ */
+u32 camss_format_find_code(u32 *code, unsigned int n_code, unsigned int index, u32 req_code)
+{
+	unsigned int i;
+
+	if (!req_code && index >= n_code)
+		return 0;
+
+	for (i = 0; i < n_code; i++) {
+		if (req_code) {
+			if (req_code == code[i])
+				return req_code;
+		} else {
+			if (i == index)
+				return code[i];
+		}
+	}
+
+	return code[0];
+}
+
+/*
+ * camss_format_find_format - Find a format in an array
+ * @code: media bus format code
+ * @pixelformat: V4L2 pixel format FCC identifier
+ * @formats: a pointer to formats array
+ * @nformats: size of @formats array
+ *
+ * Return index of a format or a negative error code otherwise
+ */
+int camss_format_find_format(u32 code, u32 pixelformat, const struct camss_format_info *formats,
+			     unsigned int nformats)
+{
+	unsigned int i;
+
+	for (i = 0; i < nformats; i++) {
+		if (formats[i].code == code &&
+		    formats[i].pixelformat == pixelformat)
+			return i;
+	}
+
+	for (i = 0; i < nformats; i++) {
+		if (formats[i].code == code)
+			return i;
+	}
+
+	return -EINVAL;
+}

linux-7.2.3/drivers/media/platform/qcom/camss/camss-format.h

@@ -0,0 +1,63 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * camss-format.h
+ *
+ * Qualcomm MSM Camera Subsystem - Format helpers
+ *
+ * Copyright (c) 2023, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023 Qualcomm Technologies, Inc.
+ */
+#ifndef __CAMSS_FORMAT_H__
+#define __CAMSS_FORMAT_H__
+
+#include <linux/types.h>
+
+#define PER_PLANE_DATA(plane, h_fract_num, h_fract_den, v_fract_num, v_fract_den, _bpp)         \
+	.hsub[(plane)].numerator	= (h_fract_num),                                        \
+	.hsub[(plane)].denominator	= (h_fract_den),                                        \
+	.vsub[(plane)].numerator	= (v_fract_num),                                        \
+	.vsub[(plane)].denominator	= (v_fract_den),                                        \
+	.bpp[(plane)]			= (_bpp)
+
+/*
+ * struct fract - Represents a fraction
+ * @numerator: Store the numerator part of the fraction
+ * @denominator: Store the denominator part of the fraction
+ */
+struct fract {
+	u8 numerator;
+	u8 denominator;
+};
+
+/*
+ * struct camss_format_info - ISP media bus format information
+ * @code: V4L2 media bus format code
+ * @mbus_bpp: Media bus bits per pixel
+ * @pixelformat: V4L2 pixel format FCC identifier
+ * @planes: Number of planes
+ * @hsub: Horizontal subsampling (for each plane)
+ * @vsub: Vertical subsampling (for each plane)
+ * @bpp: Bits per pixel when stored in memory (for each plane)
+ */
+struct camss_format_info {
+	u32 code;
+	u32 mbus_bpp;
+	u32 pixelformat;
+	u8 planes;
+	struct fract hsub[3];
+	struct fract vsub[3];
+	unsigned int bpp[3];
+};
+
+struct camss_formats {
+	unsigned int nformats;
+	const struct camss_format_info *formats;
+};
+
+u8 camss_format_get_bpp(const struct camss_format_info *formats, unsigned int nformats, u32 code);
+unsigned int camss_format_get_bpl_alignment(const struct camss_format_info *f);
+u32 camss_format_find_code(u32 *code, unsigned int n_code, unsigned int index, u32 req_code);
+int camss_format_find_format(u32 code, u32 pixelformat, const struct camss_format_info *formats,
+			     unsigned int nformats);
+
+#endif /* __CAMSS_FORMAT_H__ */

linux-7.2.3/drivers/media/platform/qcom/camss/camss-ispif.h

@@ -0,0 +1,79 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * camss-ispif.h
+ *
+ * Qualcomm MSM Camera Subsystem - ISPIF (ISP Interface) Module
+ *
+ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2015-2018 Linaro Ltd.
+ */
+#ifndef QC_MSM_CAMSS_ISPIF_H
+#define QC_MSM_CAMSS_ISPIF_H
+
+#include <linux/clk.h>
+#include <media/media-entity.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-subdev.h>
+
+#define MSM_ISPIF_PAD_SINK 0
+#define MSM_ISPIF_PAD_SRC 1
+#define MSM_ISPIF_PADS_NUM 2
+
+#define MSM_ISPIF_VFE_NUM 2
+
+enum ispif_intf {
+	PIX0,
+	RDI0,
+	PIX1,
+	RDI1,
+	RDI2
+};
+
+struct ispif_intf_cmd_reg {
+	u32 cmd_0;
+	u32 cmd_1;
+};
+
+struct ispif_line {
+	struct ispif_device *ispif;
+	u8 id;
+	u8 csid_id;
+	u8 vfe_id;
+	enum ispif_intf interface;
+	struct v4l2_subdev subdev;
+	struct media_pad pads[MSM_ISPIF_PADS_NUM];
+	struct v4l2_mbus_framefmt fmt[MSM_ISPIF_PADS_NUM];
+	const u32 *formats;
+	unsigned int nformats;
+};
+
+struct ispif_device {
+	void __iomem *base;
+	void __iomem *base_clk_mux;
+	u32 irq;
+	char irq_name[30];
+	struct camss_clock *clock;
+	int nclocks;
+	struct camss_clock  *clock_for_reset;
+	int nclocks_for_reset;
+	struct completion reset_complete[MSM_ISPIF_VFE_NUM];
+	int power_count;
+	struct mutex power_lock;
+	struct ispif_intf_cmd_reg intf_cmd[MSM_ISPIF_VFE_NUM];
+	struct mutex config_lock;
+	unsigned int line_num;
+	struct ispif_line *line;
+	struct camss *camss;
+};
+
+struct camss_subdev_resources;
+
+int msm_ispif_subdev_init(struct camss *camss,
+			  const struct camss_subdev_resources *res);
+
+int msm_ispif_register_entities(struct ispif_device *ispif,
+				struct v4l2_device *v4l2_dev);
+
+void msm_ispif_unregister_entities(struct ispif_device *ispif);
+
+#endif /* QC_MSM_CAMSS_ISPIF_H */

linux-7.2.3/drivers/media/platform/qcom/camss/camss-tpg-gen1.c

@@ -0,0 +1,231 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *
+ * Qualcomm MSM Camera Subsystem - TPG (Test Pattern Generator) Module
+ *
+ * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+ */
+#include <linux/io.h>
+#include <linux/kernel.h>
+
+#include "camss-tpg.h"
+#include "camss.h"
+
+/* TPG global registers */
+#define TPG_HW_VERSION		0x0
+# define HW_VERSION_STEPPING		GENMASK(15, 0)
+# define HW_VERSION_REVISION		GENMASK(27, 16)
+# define HW_VERSION_GENERATION		GENMASK(31, 28)
+
+#define TPG_HW_VER(gen, rev, step) \
+	(((u32)(gen) << 28) | ((u32)(rev) << 16) | (u32)(step))
+
+#define TPG_HW_VER_2_0_0                TPG_HW_VER(2, 0, 0)
+#define TPG_HW_VER_2_1_0                TPG_HW_VER(2, 1, 0)
+
+#define TPG_HW_STATUS		0x4
+
+#define TPG_CTRL		0x64
+# define TPG_CTRL_TEST_EN		BIT(0)
+# define TPG_CTRL_PHY_SEL		BIT(3)
+# define TPG_CTRL_NUM_ACTIVE_LANES	GENMASK(5, 4)
+# define TPG_CTRL_VC_DT_PATTERN_ID	GENMASK(8, 6)
+# define TPG_CTRL_OVERLAP_SHDR_EN	BIT(10)
+# define TPG_CTRL_NUM_ACTIVE_VC		GENMASK(31, 30)
+
+#define TPG_CLEAR		0x1F4
+
+/* TPG VC-based registers */
+#define TPG_VC_n_GAIN_CFG(n)		(0x60 + (n) * 0x60)
+
+#define TPG_VC_n_CFG0(n)	(0x68 + (n) * 0x60)
+# define TPG_VC_n_CFG0_VC_NUM			GENMASK(4, 0)
+# define TPG_VC_n_CFG0_NUM_ACTIVE_DT		GENMASK(9, 8)
+# define TPG_VC_n_CFG0_NUM_BATCH		GENMASK(15, 12)
+# define TPG_VC_n_CFG0_NUM_FRAMES		GENMASK(31, 16)
+
+#define TPG_VC_n_LSFR_SEED(n)	(0x6C + (n) * 0x60)
+#define TPG_VC_n_HBI_CFG(n)	(0x70 + (n) * 0x60)
+#define TPG_VC_n_VBI_CFG(n)	(0x74 + (n) * 0x60)
+
+#define TPG_VC_n_COLOR_BARS_CFG(n)		(0x78 + (n) * 0x60)
+# define TPG_VC_n_COLOR_BARS_CFG_PIX_PATTERN		GENMASK(2, 0)
+# define TPG_VC_n_COLOR_BARS_CFG_QCFA_EN		BIT(3)
+# define TPG_VC_n_COLOR_BARS_CFG_SPLIT_EN		BIT(4)
+# define TPG_VC_n_COLOR_BARS_CFG_NOISE_EN		BIT(5)
+# define TPG_VC_n_COLOR_BARS_CFG_ROTATE_PERIOD		GENMASK(13, 8)
+# define TPG_VC_n_COLOR_BARS_CFG_XCFA_EN		BIT(16)
+# define TPG_VC_n_COLOR_BARS_CFG_SIZE_X			GENMASK(26, 24)
+# define TPG_VC_n_COLOR_BARS_CFG_SIZE_Y			GENMASK(30, 28)
+
+/* TPG DT-based registers */
+#define TPG_VC_m_DT_n_CFG_0(m, n)		(0x7C + (m) * 0x60 + (n) * 0xC)
+# define TPG_VC_m_DT_n_CFG_0_FRAME_HEIGHT	GENMASK(15, 0)
+# define TPG_VC_m_DT_n_CFG_0_FRAME_WIDTH	GENMASK(31, 16)
+
+#define TPG_VC_m_DT_n_CFG_1(m, n)		(0x80 + (m) * 0x60 + (n) * 0xC)
+# define TPG_VC_m_DT_n_CFG_1_DATA_TYPE		GENMASK(5, 0)
+# define TPG_VC_m_DT_n_CFG_1_ECC_XOR_MASK	GENMASK(13, 8)
+# define TPG_VC_m_DT_n_CFG_1_CRC_XOR_MASK	GENMASK(31, 16)
+
+#define TPG_VC_m_DT_n_CFG_2(m, n)		(0x84 + (m) * 0x60 + (n) * 0xC)
+# define TPG_VC_m_DT_n_CFG_2_PAYLOAD_MODE		GENMASK(3, 0)
+/* v2.0.0: USER[19:4], ENC[23:20] */
+# define TPG_V2_0_0_VC_m_DT_n_CFG_2_USER_SPECIFIED_PAYLOAD		GENMASK(19, 4)
+# define TPG_V2_0_0_VC_m_DT_n_CFG_2_ENCODE_FORMAT			GENMASK(23, 20)
+/* v2.1.0: USER[27:4], ENC[31:28] */
+# define TPG_V2_1_0_VC_m_DT_n_CFG_2_USER_SPECIFIED_PAYLOAD	GENMASK(27, 4)
+# define TPG_V2_1_0_VC_m_DT_n_CFG_2_ENCODE_FORMAT			GENMASK(31, 28)
+
+#define TPG_HBI_PCT_DEFAULT			545	/* 545% */
+#define TPG_VBI_PCT_DEFAULT			10	/* 10% */
+#define PERCENT_BASE				100
+
+/* Default user-specified payload for TPG test generator.
+ * Keep consistent with CSID TPG default: 0xBE.
+ */
+#define TPG_USER_SPECIFIED_PAYLOAD_DEFAULT	0xBE
+#define TPG_LFSR_SEED_DEFAULT			0x12345678
+#define TPG_COLOR_BARS_CFG_STANDARD \
+	FIELD_PREP(TPG_VC_n_COLOR_BARS_CFG_ROTATE_PERIOD, 0xA)
+
+static const char * const testgen_payload_modes[] = {
+	[TPG_PAYLOAD_MODE_DISABLED]		= "Disabled",
+	[TPG_PAYLOAD_MODE_INCREMENTING]		= "Incrementing",
+	[TPG_PAYLOAD_MODE_ALTERNATING_55_AA]	= "Alternating 0x55/0xAA",
+	[TPG_PAYLOAD_MODE_RANDOM]		= "Pseudo-random Data",
+	[TPG_PAYLOAD_MODE_USER_SPECIFIED]	= "User Specified",
+	[TPG_PAYLOAD_MODE_COLOR_BARS]		= "Color bars",
+};
+
+static int tpg_stream_on(struct tpg_device *tpg)
+{
+	struct tpg_testgen_config *tg = &tpg->testgen;
+	struct v4l2_mbus_framefmt *input_format;
+	const struct tpg_format_info *format;
+	u8 payload_mode = (tg->mode > TPG_PAYLOAD_MODE_DISABLED) ?
+			   tg->mode - 1 : 0;
+	u8 lane_cnt = tpg->res->lane_cnt;
+	u8 vc, dt, last_vc = 0;
+	u32 val;
+
+	for (vc = 0; vc <= MSM_TPG_ACTIVE_VC; vc++) {
+		last_vc = vc;
+
+		input_format = &tpg->fmt;
+		format = tpg_get_fmt_entry(tpg->res->formats->formats,
+					   tpg->res->formats->nformats,
+					   input_format->code);
+		if (IS_ERR(format))
+			return -EINVAL;
+
+		/* VC configuration */
+		val = FIELD_PREP(TPG_VC_n_CFG0_NUM_ACTIVE_DT, MSM_TPG_ACTIVE_DT) |
+		      FIELD_PREP(TPG_VC_n_CFG0_NUM_FRAMES, 0);
+		writel(val, tpg->base + TPG_VC_n_CFG0(vc));
+
+		writel(TPG_LFSR_SEED_DEFAULT, tpg->base + TPG_VC_n_LSFR_SEED(vc));
+
+		val = DIV_ROUND_UP(input_format->width * format->bpp * TPG_HBI_PCT_DEFAULT,
+				   BITS_PER_BYTE * lane_cnt * PERCENT_BASE);
+		writel(val, tpg->base + TPG_VC_n_HBI_CFG(vc));
+
+		val = input_format->height * TPG_VBI_PCT_DEFAULT / PERCENT_BASE;
+		writel(val, tpg->base + TPG_VC_n_VBI_CFG(vc));
+
+		writel(TPG_COLOR_BARS_CFG_STANDARD, tpg->base + TPG_VC_n_COLOR_BARS_CFG(vc));
+
+		/* DT configuration */
+		for (dt = 0; dt <= MSM_TPG_ACTIVE_DT; dt++) {
+			val = FIELD_PREP(TPG_VC_m_DT_n_CFG_0_FRAME_HEIGHT,
+					 input_format->height & 0xffff) |
+			      FIELD_PREP(TPG_VC_m_DT_n_CFG_0_FRAME_WIDTH,
+					 input_format->width & 0xffff);
+			writel(val, tpg->base + TPG_VC_m_DT_n_CFG_0(vc, dt));
+
+			val = FIELD_PREP(TPG_VC_m_DT_n_CFG_1_DATA_TYPE, format->data_type);
+			writel(val, tpg->base + TPG_VC_m_DT_n_CFG_1(vc, dt));
+
+			if (tpg->hw_version == TPG_HW_VER_2_0_0) {
+				val = FIELD_PREP(TPG_VC_m_DT_n_CFG_2_PAYLOAD_MODE, payload_mode) |
+				      FIELD_PREP(TPG_V2_0_0_VC_m_DT_n_CFG_2_USER_SPECIFIED_PAYLOAD,
+						 TPG_USER_SPECIFIED_PAYLOAD_DEFAULT) |
+				      FIELD_PREP(TPG_V2_0_0_VC_m_DT_n_CFG_2_ENCODE_FORMAT,
+						 format->encode_format);
+			} else if (tpg->hw_version >= TPG_HW_VER_2_1_0) {
+				val = FIELD_PREP(TPG_VC_m_DT_n_CFG_2_PAYLOAD_MODE, payload_mode) |
+				      FIELD_PREP(TPG_V2_1_0_VC_m_DT_n_CFG_2_USER_SPECIFIED_PAYLOAD,
+						 TPG_USER_SPECIFIED_PAYLOAD_DEFAULT) |
+				      FIELD_PREP(TPG_V2_1_0_VC_m_DT_n_CFG_2_ENCODE_FORMAT,
+						 format->encode_format);
+			}
+			writel(val, tpg->base + TPG_VC_m_DT_n_CFG_2(vc, dt));
+		}
+	}
+
+	/* Global TPG control */
+	val = FIELD_PREP(TPG_CTRL_TEST_EN, 1) |
+	      FIELD_PREP(TPG_CTRL_NUM_ACTIVE_LANES, lane_cnt - 1) |
+	      FIELD_PREP(TPG_CTRL_NUM_ACTIVE_VC, last_vc);
+	writel(val, tpg->base + TPG_CTRL);
+
+	return 0;
+}
+
+static int tpg_reset(struct tpg_device *tpg)
+{
+	writel(0, tpg->base + TPG_CTRL);
+	writel(1, tpg->base + TPG_CLEAR);
+
+	return 0;
+}
+
+static void tpg_stream_off(struct tpg_device *tpg)
+{
+	tpg_reset(tpg);
+}
+
+static int tpg_configure_stream(struct tpg_device *tpg, u8 enable)
+{
+	if (enable)
+		return tpg_stream_on(tpg);
+
+	tpg_stream_off(tpg);
+
+	return 0;
+}
+
+static int tpg_configure_testgen_pattern(struct tpg_device *tpg, s32 val)
+{
+	if (val >= 0 && val <= TPG_PAYLOAD_MODE_COLOR_BARS)
+		tpg->testgen.mode = val;
+
+	return 0;
+}
+
+static u32 tpg_hw_version(struct tpg_device *tpg)
+{
+	u32 hw_version = readl(tpg->base + TPG_HW_VERSION);
+
+	tpg->hw_version = hw_version;
+	dev_dbg(tpg->camss->dev, "tpg HW Version = %u.%u.%u\n",
+		(u32)FIELD_GET(HW_VERSION_GENERATION, hw_version),
+		(u32)FIELD_GET(HW_VERSION_REVISION, hw_version),
+		(u32)FIELD_GET(HW_VERSION_STEPPING, hw_version));
+
+	return hw_version;
+}
+
+static void tpg_subdev_init(struct tpg_device *tpg)
+{
+	tpg->testgen.modes = testgen_payload_modes;
+	tpg->testgen.nmodes = TPG_PAYLOAD_MODE_NUM_SUPPORTED_GEN1;
+}
+
+const struct tpg_hw_ops tpg_ops_gen1 = {
+	.configure_stream = tpg_configure_stream,
+	.configure_testgen_pattern = tpg_configure_testgen_pattern,
+	.hw_version = tpg_hw_version,
+	.reset = tpg_reset,
+	.subdev_init = tpg_subdev_init,
+};

linux-7.2.3/drivers/media/platform/qcom/camss/camss-tpg.c

@@ -0,0 +1,519 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *
+ * Qualcomm MSM Camera Subsystem - TPG Module
+ *
+ * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+ */
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <media/media-entity.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-subdev.h>
+#include <media/mipi-csi2.h>
+
+#include "camss-tpg.h"
+#include "camss.h"
+
+static const struct tpg_format_info formats_gen1[] = {
+	{
+		MEDIA_BUS_FMT_SBGGR8_1X8,
+		MIPI_CSI2_DT_RAW8,
+		ENCODE_FORMAT_UNCOMPRESSED_8_BIT,
+		8,
+	},
+	{
+		MEDIA_BUS_FMT_SGBRG8_1X8,
+		MIPI_CSI2_DT_RAW8,
+		ENCODE_FORMAT_UNCOMPRESSED_8_BIT,
+		8,
+	},
+	{
+		MEDIA_BUS_FMT_SGRBG8_1X8,
+		MIPI_CSI2_DT_RAW8,
+		ENCODE_FORMAT_UNCOMPRESSED_8_BIT,
+		8,
+	},
+	{
+		MEDIA_BUS_FMT_SRGGB8_1X8,
+		MIPI_CSI2_DT_RAW8,
+		ENCODE_FORMAT_UNCOMPRESSED_8_BIT,
+		8,
+	},
+	{
+		MEDIA_BUS_FMT_SBGGR10_1X10,
+		MIPI_CSI2_DT_RAW10,
+		ENCODE_FORMAT_UNCOMPRESSED_10_BIT,
+		10,
+	},
+	{
+		MEDIA_BUS_FMT_SGBRG10_1X10,
+		MIPI_CSI2_DT_RAW10,
+		ENCODE_FORMAT_UNCOMPRESSED_10_BIT,
+		10,
+	},
+	{
+		MEDIA_BUS_FMT_SGRBG10_1X10,
+		MIPI_CSI2_DT_RAW10,
+		ENCODE_FORMAT_UNCOMPRESSED_10_BIT,
+		10,
+	},
+	{
+		MEDIA_BUS_FMT_SRGGB10_1X10,
+		MIPI_CSI2_DT_RAW10,
+		ENCODE_FORMAT_UNCOMPRESSED_10_BIT,
+		10,
+	},
+	{
+		MEDIA_BUS_FMT_SBGGR12_1X12,
+		MIPI_CSI2_DT_RAW12,
+		ENCODE_FORMAT_UNCOMPRESSED_12_BIT,
+		12,
+	},
+	{
+		MEDIA_BUS_FMT_SGBRG12_1X12,
+		MIPI_CSI2_DT_RAW12,
+		ENCODE_FORMAT_UNCOMPRESSED_12_BIT,
+		12,
+	},
+	{
+		MEDIA_BUS_FMT_SGRBG12_1X12,
+		MIPI_CSI2_DT_RAW12,
+		ENCODE_FORMAT_UNCOMPRESSED_12_BIT,
+		12,
+	},
+	{
+		MEDIA_BUS_FMT_SRGGB12_1X12,
+		MIPI_CSI2_DT_RAW12,
+		ENCODE_FORMAT_UNCOMPRESSED_12_BIT,
+		12,
+	},
+	{
+		MEDIA_BUS_FMT_Y8_1X8,
+		MIPI_CSI2_DT_RAW8,
+		ENCODE_FORMAT_UNCOMPRESSED_8_BIT,
+		8,
+	},
+	{
+		MEDIA_BUS_FMT_Y10_1X10,
+		MIPI_CSI2_DT_RAW10,
+		ENCODE_FORMAT_UNCOMPRESSED_10_BIT,
+		10,
+	},
+};
+
+const struct tpg_formats tpg_formats_gen1 = {
+	.nformats = ARRAY_SIZE(formats_gen1),
+	.formats = formats_gen1
+};
+
+const struct tpg_format_info *tpg_get_fmt_entry(const struct tpg_format_info *formats,
+						unsigned int nformats,
+						u32 code)
+{
+	unsigned int i;
+
+	for (i = 0; i < nformats; i++)
+		if (code == formats[i].code)
+			return &formats[i];
+
+	return ERR_PTR(-EINVAL);
+}
+
+static int tpg_set_clock_rates(struct tpg_device *tpg)
+{
+	struct device *dev = tpg->camss->dev;
+	int i, ret;
+
+	for (i = 0; i < tpg->nclocks; i++) {
+		struct camss_clock *clock = &tpg->clock[i];
+		long round_rate;
+
+		if (clock->freq) {
+			round_rate = clk_round_rate(clock->clk, clock->freq[0]);
+			if (round_rate < 0) {
+				dev_err(dev, "clk round rate failed: %ld\n",
+					round_rate);
+				return -EINVAL;
+			}
+
+			ret = clk_set_rate(clock->clk, round_rate);
+			if (ret < 0) {
+				dev_err(dev, "clk set rate failed: %d\n", ret);
+				return ret;
+			}
+		}
+	}
+
+	return 0;
+}
+
+static int tpg_set_power(struct v4l2_subdev *sd, int on)
+{
+	struct tpg_device *tpg = v4l2_get_subdevdata(sd);
+	struct device *dev = tpg->camss->dev;
+
+	if (on) {
+		int ret;
+
+		ret = pm_runtime_resume_and_get(dev);
+		if (ret < 0)
+			return ret;
+
+		ret = tpg_set_clock_rates(tpg);
+		if (ret < 0) {
+			pm_runtime_put_sync(dev);
+			return ret;
+		}
+
+		ret = camss_enable_clocks(tpg->nclocks, tpg->clock, dev);
+		if (ret < 0) {
+			pm_runtime_put_sync(dev);
+			return ret;
+		}
+
+		tpg->res->hw_ops->reset(tpg);
+
+		tpg->res->hw_ops->hw_version(tpg);
+	} else {
+		camss_disable_clocks(tpg->nclocks, tpg->clock);
+
+		pm_runtime_put_sync(dev);
+	}
+
+	return 0;
+}
+
+static int tpg_set_stream(struct v4l2_subdev *sd, int enable)
+{
+	struct tpg_device *tpg = v4l2_get_subdevdata(sd);
+	int ret;
+
+	if (enable) {
+		ret = v4l2_ctrl_handler_setup(&tpg->ctrls);
+		if (ret < 0) {
+			dev_err(tpg->camss->dev,
+				"could not sync v4l2 controls: %d\n", ret);
+			return ret;
+		}
+	}
+
+	return tpg->res->hw_ops->configure_stream(tpg, enable);
+}
+
+static struct v4l2_mbus_framefmt *
+__tpg_get_format(struct tpg_device *tpg,
+		 struct v4l2_subdev_state *sd_state,
+		 unsigned int pad,
+		 enum v4l2_subdev_format_whence which)
+{
+	if (which == V4L2_SUBDEV_FORMAT_TRY)
+		return v4l2_subdev_state_get_format(sd_state,
+						    pad);
+
+	return &tpg->fmt;
+}
+
+static void tpg_try_format(struct tpg_device *tpg,
+			   struct v4l2_mbus_framefmt *fmt)
+{
+	unsigned int i;
+
+	for (i = 0; i < tpg->res->formats->nformats; i++)
+		if (tpg->res->formats->formats[i].code == fmt->code)
+			break;
+
+	if (i >= tpg->res->formats->nformats)
+		fmt->code = MEDIA_BUS_FMT_SBGGR8_1X8;
+
+	fmt->width = clamp_t(u32, fmt->width, TPG_MIN_WIDTH, TPG_MAX_WIDTH);
+	fmt->height = clamp_t(u32, fmt->height, TPG_MIN_HEIGHT, TPG_MAX_HEIGHT);
+	fmt->field = V4L2_FIELD_NONE;
+	fmt->colorspace = V4L2_COLORSPACE_SRGB;
+}
+
+static int tpg_enum_mbus_code(struct v4l2_subdev *sd,
+			      struct v4l2_subdev_state *sd_state,
+			      struct v4l2_subdev_mbus_code_enum *code)
+{
+	struct tpg_device *tpg = v4l2_get_subdevdata(sd);
+
+	if (code->index >= tpg->res->formats->nformats)
+		return -EINVAL;
+
+	code->code = tpg->res->formats->formats[code->index].code;
+
+	return 0;
+}
+
+static int tpg_enum_frame_size(struct v4l2_subdev *sd,
+			       struct v4l2_subdev_state *sd_state,
+			       struct v4l2_subdev_frame_size_enum *fse)
+{
+	struct tpg_device *tpg = v4l2_get_subdevdata(sd);
+	unsigned int i;
+
+	if (fse->index != 0)
+		return -EINVAL;
+
+	for (i = 0; i < tpg->res->formats->nformats; i++)
+		if (tpg->res->formats->formats[i].code == fse->code)
+			break;
+
+	if (i >= tpg->res->formats->nformats)
+		return -EINVAL;
+
+	fse->min_width = TPG_MIN_WIDTH;
+	fse->min_height = TPG_MIN_HEIGHT;
+	fse->max_width = TPG_MAX_WIDTH;
+	fse->max_height = TPG_MAX_HEIGHT;
+
+	return 0;
+}
+
+static int tpg_get_format(struct v4l2_subdev *sd,
+			  struct v4l2_subdev_state *sd_state,
+			  struct v4l2_subdev_format *fmt)
+{
+	struct tpg_device *tpg = v4l2_get_subdevdata(sd);
+	struct v4l2_mbus_framefmt *format;
+
+	format = __tpg_get_format(tpg, sd_state, fmt->pad, fmt->which);
+	if (!format)
+		return -EINVAL;
+
+	fmt->format = *format;
+
+	return 0;
+}
+
+static int tpg_set_format(struct v4l2_subdev *sd,
+			  struct v4l2_subdev_state *sd_state,
+			  struct v4l2_subdev_format *fmt)
+{
+	struct tpg_device *tpg = v4l2_get_subdevdata(sd);
+	struct v4l2_mbus_framefmt *format;
+
+	format = __tpg_get_format(tpg, sd_state, fmt->pad, fmt->which);
+	if (!format)
+		return -EINVAL;
+
+	tpg_try_format(tpg, &fmt->format);
+	*format = fmt->format;
+
+	return 0;
+}
+
+static int tpg_init_formats(struct v4l2_subdev *sd,
+			    struct v4l2_subdev_fh *fh)
+{
+	struct v4l2_subdev_format format = {
+		.pad = MSM_TPG_PAD_SRC,
+		.which = fh ? V4L2_SUBDEV_FORMAT_TRY :
+			      V4L2_SUBDEV_FORMAT_ACTIVE,
+		.format = {
+			.code = MEDIA_BUS_FMT_SBGGR8_1X8,
+			.width = 1920,
+			.height = 1080,
+		}
+	};
+
+	return tpg_set_format(sd, fh ? fh->state : NULL, &format);
+}
+
+static int tpg_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct tpg_device *tpg = container_of(ctrl->handler,
+					      struct tpg_device, ctrls);
+	int ret = -EINVAL;
+
+	switch (ctrl->id) {
+	case V4L2_CID_TEST_PATTERN:
+		ret = tpg->res->hw_ops->configure_testgen_pattern(tpg, ctrl->val);
+		break;
+	}
+
+	return ret;
+}
+
+static const struct v4l2_ctrl_ops tpg_ctrl_ops = {
+	.s_ctrl = tpg_s_ctrl,
+};
+
+int msm_tpg_subdev_init(struct camss *camss,
+			struct tpg_device *tpg,
+			const struct camss_subdev_resources *res, u8 id)
+{
+	struct platform_device *pdev;
+	struct device *dev;
+	int i, j;
+
+	dev  = camss->dev;
+	pdev = to_platform_device(dev);
+
+	tpg->camss = camss;
+	tpg->id = id;
+	tpg->res = &res->tpg;
+	tpg->res->hw_ops->subdev_init(tpg);
+
+	tpg->base = devm_platform_ioremap_resource_byname(pdev, res->reg[0]);
+	if (IS_ERR(tpg->base))
+		return PTR_ERR(tpg->base);
+
+	tpg->nclocks = 0;
+	while (res->clock[tpg->nclocks])
+		tpg->nclocks++;
+
+	if (!tpg->nclocks)
+		return 0;
+
+	tpg->clock = devm_kcalloc(dev, tpg->nclocks,
+				  sizeof(*tpg->clock), GFP_KERNEL);
+	if (!tpg->clock)
+		return -ENOMEM;
+
+	for (i = 0; i < tpg->nclocks; i++) {
+		struct camss_clock *clock = &tpg->clock[i];
+
+		clock->clk = devm_clk_get(dev, res->clock[i]);
+		if (IS_ERR(clock->clk))
+			return PTR_ERR(clock->clk);
+
+		clock->name = res->clock[i];
+
+		clock->nfreqs = 0;
+		while (res->clock_rate[i][clock->nfreqs])
+			clock->nfreqs++;
+
+		if (!clock->nfreqs) {
+			clock->freq = NULL;
+			continue;
+		}
+
+		clock->freq = devm_kcalloc(dev, clock->nfreqs,
+					   sizeof(*clock->freq), GFP_KERNEL);
+		if (!clock->freq)
+			return -ENOMEM;
+
+		for (j = 0; j < clock->nfreqs; j++)
+			clock->freq[j] = res->clock_rate[i][j];
+	}
+
+	return 0;
+}
+
+static int tpg_link_setup(struct media_entity *entity,
+			  const struct media_pad *local,
+			  const struct media_pad *remote, u32 flags)
+{
+	if (flags & MEDIA_LNK_FL_ENABLED)
+		if (media_pad_remote_pad_first(local))
+			return -EBUSY;
+
+	return 0;
+}
+
+static const struct v4l2_subdev_core_ops tpg_core_ops = {
+	.s_power = tpg_set_power,
+};
+
+static const struct v4l2_subdev_video_ops tpg_video_ops = {
+	.s_stream = tpg_set_stream,
+};
+
+static const struct v4l2_subdev_pad_ops tpg_pad_ops = {
+	.enum_mbus_code = tpg_enum_mbus_code,
+	.enum_frame_size = tpg_enum_frame_size,
+	.get_fmt = tpg_get_format,
+	.set_fmt = tpg_set_format,
+};
+
+static const struct v4l2_subdev_ops tpg_v4l2_ops = {
+	.core = &tpg_core_ops,
+	.video = &tpg_video_ops,
+	.pad = &tpg_pad_ops,
+};
+
+static const struct v4l2_subdev_internal_ops tpg_v4l2_internal_ops = {
+	.open = tpg_init_formats,
+};
+
+static const struct media_entity_operations tpg_media_ops = {
+	.link_setup = tpg_link_setup,
+	.link_validate = v4l2_subdev_link_validate,
+};
+
+int msm_tpg_register_entity(struct tpg_device *tpg,
+			    struct v4l2_device *v4l2_dev)
+{
+	struct v4l2_subdev *sd = &tpg->subdev;
+	struct device *dev = tpg->camss->dev;
+	int ret;
+
+	v4l2_subdev_init(sd, &tpg_v4l2_ops);
+	sd->internal_ops = &tpg_v4l2_internal_ops;
+	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
+		     V4L2_SUBDEV_FL_HAS_EVENTS;
+	snprintf(sd->name, ARRAY_SIZE(sd->name), "%s%d",
+		 "msm_tpg", tpg->id);
+	sd->grp_id = TPG_GRP_ID;
+	v4l2_set_subdevdata(sd, tpg);
+
+	ret = v4l2_ctrl_handler_init(&tpg->ctrls, 1);
+	if (ret < 0) {
+		dev_err(dev, "Failed to init ctrl handler: %d\n", ret);
+		return ret;
+	}
+
+	tpg->testgen_mode = v4l2_ctrl_new_std_menu_items(&tpg->ctrls,
+							 &tpg_ctrl_ops, V4L2_CID_TEST_PATTERN,
+							 tpg->testgen.nmodes, 0, 0,
+							 tpg->testgen.modes);
+	if (tpg->ctrls.error) {
+		dev_err(dev, "Failed to init ctrl: %d\n", tpg->ctrls.error);
+		ret = tpg->ctrls.error;
+		goto free_ctrl;
+	}
+
+	tpg->subdev.ctrl_handler = &tpg->ctrls;
+
+	ret = tpg_init_formats(sd, NULL);
+	if (ret < 0) {
+		dev_err(dev, "Failed to init format: %d\n", ret);
+		goto free_ctrl;
+	}
+
+	tpg->pad.flags = MEDIA_PAD_FL_SOURCE;
+
+	sd->entity.ops = &tpg_media_ops;
+	ret = media_entity_pads_init(&sd->entity, 1, &tpg->pad);
+	if (ret < 0) {
+		dev_err(dev, "Failed to init media entity: %d\n", ret);
+		goto free_ctrl;
+	}
+
+	ret = v4l2_device_register_subdev(v4l2_dev, sd);
+	if (ret < 0) {
+		dev_err(dev, "Failed to register subdev: %d\n", ret);
+		media_entity_cleanup(&sd->entity);
+		goto free_ctrl;
+	}
+
+	return 0;
+
+free_ctrl:
+	v4l2_ctrl_handler_free(&tpg->ctrls);
+
+	return ret;
+}
+
+void msm_tpg_unregister_entity(struct tpg_device *tpg)
+{
+	v4l2_device_unregister_subdev(&tpg->subdev);
+	media_entity_cleanup(&tpg->subdev.entity);
+	v4l2_ctrl_handler_free(&tpg->ctrls);
+}

linux-7.2.3/drivers/media/platform/qcom/camss/camss-tpg.h

@@ -0,0 +1,118 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * camss-tpg.h
+ *
+ * Qualcomm MSM Camera Subsystem - TPG Module
+ *
+ * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+#ifndef QC_MSM_CAMSS_TPG_H
+#define QC_MSM_CAMSS_TPG_H
+
+#include <linux/clk.h>
+#include <linux/bitfield.h>
+#include <media/media-entity.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-mediabus.h>
+#include <media/v4l2-subdev.h>
+
+#define ENCODE_FORMAT_UNCOMPRESSED_8_BIT	0x1
+#define ENCODE_FORMAT_UNCOMPRESSED_10_BIT	0x2
+#define ENCODE_FORMAT_UNCOMPRESSED_12_BIT	0x3
+#define ENCODE_FORMAT_UNCOMPRESSED_14_BIT	0x4
+#define ENCODE_FORMAT_UNCOMPRESSED_16_BIT	0x5
+#define ENCODE_FORMAT_UNCOMPRESSED_20_BIT	0x6
+#define ENCODE_FORMAT_UNCOMPRESSED_24_BIT	0x7
+
+#define MSM_TPG_PAD_SRC		0
+#define MSM_TPG_ACTIVE_VC		0
+#define MSM_TPG_ACTIVE_DT		0
+
+#define TPG_MIN_WIDTH   1
+#define TPG_MIN_HEIGHT  1
+#define TPG_MAX_WIDTH   8191
+#define TPG_MAX_HEIGHT  8191
+
+#define TPG_GRP_ID 0
+
+enum tpg_testgen_mode {
+	TPG_PAYLOAD_MODE_DISABLED = 0,
+	TPG_PAYLOAD_MODE_INCREMENTING = 1,
+	TPG_PAYLOAD_MODE_ALTERNATING_55_AA = 2,
+	TPG_PAYLOAD_MODE_RANDOM = 5,
+	TPG_PAYLOAD_MODE_USER_SPECIFIED = 6,
+	TPG_PAYLOAD_MODE_COLOR_BARS = 9,
+	TPG_PAYLOAD_MODE_NUM_SUPPORTED_GEN1 = 9,
+};
+
+struct tpg_testgen_config {
+	enum tpg_testgen_mode mode;
+	const char * const*modes;
+	u8 nmodes;
+};
+
+struct tpg_format_info {
+	u32 code;
+	u8 data_type;
+	u8 encode_format;
+	u8 bpp;
+};
+
+struct tpg_formats {
+	unsigned int nformats;
+	const struct tpg_format_info *formats;
+};
+
+struct tpg_device;
+
+struct tpg_hw_ops {
+	int (*configure_stream)(struct tpg_device *tpg, u8 enable);
+	int (*configure_testgen_pattern)(struct tpg_device *tpg, s32 val);
+	u32 (*hw_version)(struct tpg_device *tpg);
+	int (*reset)(struct tpg_device *tpg);
+	void (*subdev_init)(struct tpg_device *tpg);
+};
+
+struct tpg_subdev_resources {
+	u8 lane_cnt;
+	const struct tpg_formats *formats;
+	const struct tpg_hw_ops *hw_ops;
+};
+
+struct tpg_device {
+	struct camss *camss;
+	u8 id;
+	struct v4l2_subdev subdev;
+	struct media_pad pad;
+	void __iomem *base;
+	struct camss_clock *clock;
+	int nclocks;
+	struct tpg_testgen_config testgen;
+	struct v4l2_mbus_framefmt fmt;
+	struct v4l2_ctrl_handler ctrls;
+	struct v4l2_ctrl *testgen_mode;
+	const struct tpg_subdev_resources *res;
+	u32 hw_version;
+};
+
+struct camss_subdev_resources;
+
+const struct tpg_format_info *tpg_get_fmt_entry(const struct tpg_format_info *formats,
+						unsigned int nformats,
+						u32 code);
+
+int msm_tpg_subdev_init(struct camss *camss,
+			struct tpg_device *tpg,
+			const struct camss_subdev_resources *res, u8 id);
+
+int msm_tpg_register_entity(struct tpg_device *tpg,
+			    struct v4l2_device *v4l2_dev);
+
+void msm_tpg_unregister_entity(struct tpg_device *tpg);
+
+extern const struct tpg_formats tpg_formats_gen1;
+
+extern const struct tpg_hw_ops tpg_ops_gen1;
+
+#endif /* QC_MSM_CAMSS_TPG_H */

linux-7.2.3/drivers/media/platform/qcom/camss/camss-vfe-17x.c

@@ -0,0 +1,595 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * camss-vfe-170.c
+ *
+ * Qualcomm MSM Camera Subsystem - VFE (Video Front End) Module v170
+ *
+ * Copyright (C) 2020-2021 Linaro Ltd.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+
+#include "camss.h"
+#include "camss-vfe.h"
+
+#define VFE_GLOBAL_RESET_CMD			(0x018)
+#define		GLOBAL_RESET_CMD_CORE		BIT(0)
+#define		GLOBAL_RESET_CMD_CAMIF		BIT(1)
+#define		GLOBAL_RESET_CMD_BUS		BIT(2)
+#define		GLOBAL_RESET_CMD_BUS_BDG	BIT(3)
+#define		GLOBAL_RESET_CMD_REGISTER	BIT(4)
+#define		GLOBAL_RESET_CMD_PM		BIT(5)
+#define		GLOBAL_RESET_CMD_BUS_MISR	BIT(6)
+#define		GLOBAL_RESET_CMD_TESTGEN	BIT(7)
+#define		GLOBAL_RESET_CMD_DSP		BIT(8)
+#define		GLOBAL_RESET_CMD_IDLE_CGC	BIT(9)
+#define		GLOBAL_RESET_CMD_RDI0		BIT(10)
+#define		GLOBAL_RESET_CMD_RDI1		BIT(11)
+#define		GLOBAL_RESET_CMD_RDI2		BIT(12)
+#define		GLOBAL_RESET_CMD_RDI3		BIT(13)
+#define		GLOBAL_RESET_CMD_VFE_DOMAIN	BIT(30)
+#define		GLOBAL_RESET_CMD_RESET_BYPASS	BIT(31)
+
+#define VFE_CORE_CFG				(0x050)
+#define		CFG_PIXEL_PATTERN_YCBYCR	(0x4)
+#define		CFG_PIXEL_PATTERN_YCRYCB	(0x5)
+#define		CFG_PIXEL_PATTERN_CBYCRY	(0x6)
+#define		CFG_PIXEL_PATTERN_CRYCBY	(0x7)
+#define		CFG_COMPOSITE_REG_UPDATE_EN	BIT(4)
+
+#define VFE_IRQ_CMD				(0x058)
+#define		CMD_GLOBAL_CLEAR		BIT(0)
+
+#define VFE_IRQ_MASK_0					(0x05c)
+#define		MASK_0_CAMIF_SOF			BIT(0)
+#define		MASK_0_CAMIF_EOF			BIT(1)
+#define		MASK_0_RDI_REG_UPDATE(n)		BIT((n) + 5)
+#define		MASK_0_IMAGE_MASTER_n_PING_PONG(n)	BIT((n) + 8)
+#define		MASK_0_IMAGE_COMPOSITE_DONE_n(n)	BIT((n) + 25)
+#define		MASK_0_RESET_ACK			BIT(31)
+
+#define VFE_IRQ_MASK_1					(0x060)
+#define		MASK_1_CAMIF_ERROR			BIT(0)
+#define		MASK_1_VIOLATION			BIT(7)
+#define		MASK_1_BUS_BDG_HALT_ACK			BIT(8)
+#define		MASK_1_IMAGE_MASTER_n_BUS_OVERFLOW(n)	BIT((n) + 9)
+#define		MASK_1_RDI_SOF(n)			BIT((n) + 29)
+
+#define VFE_IRQ_CLEAR_0					(0x064)
+#define VFE_IRQ_CLEAR_1					(0x068)
+
+#define VFE_IRQ_STATUS_0				(0x06c)
+#define		STATUS_0_CAMIF_SOF			BIT(0)
+#define		STATUS_0_RDI_REG_UPDATE(n)		BIT((n) + 5)
+#define		STATUS_0_IMAGE_MASTER_PING_PONG(n)	BIT((n) + 8)
+#define		STATUS_0_IMAGE_COMPOSITE_DONE(n)	BIT((n) + 25)
+#define		STATUS_0_RESET_ACK			BIT(31)
+
+#define VFE_IRQ_STATUS_1				(0x070)
+#define		STATUS_1_VIOLATION			BIT(7)
+#define		STATUS_1_BUS_BDG_HALT_ACK		BIT(8)
+#define		STATUS_1_RDI_SOF(n)			BIT((n) + 27)
+
+#define VFE_VIOLATION_STATUS			(0x07c)
+
+#define VFE_CAMIF_CMD				(0x478)
+#define		CMD_CLEAR_CAMIF_STATUS		BIT(2)
+
+#define VFE_CAMIF_CFG				(0x47c)
+#define		CFG_VSYNC_SYNC_EDGE		(0)
+#define			VSYNC_ACTIVE_HIGH	(0)
+#define			VSYNC_ACTIVE_LOW	(1)
+#define		CFG_HSYNC_SYNC_EDGE		(1)
+#define			HSYNC_ACTIVE_HIGH	(0)
+#define			HSYNC_ACTIVE_LOW	(1)
+#define		CFG_VFE_SUBSAMPLE_ENABLE	BIT(4)
+#define		CFG_BUS_SUBSAMPLE_ENABLE	BIT(5)
+#define		CFG_VFE_OUTPUT_EN		BIT(6)
+#define		CFG_BUS_OUTPUT_EN		BIT(7)
+#define		CFG_BINNING_EN			BIT(9)
+#define		CFG_FRAME_BASED_EN		BIT(10)
+#define		CFG_RAW_CROP_EN			BIT(22)
+
+#define VFE_REG_UPDATE_CMD			(0x4ac)
+#define		REG_UPDATE_RDI(n)		BIT(1 + (n))
+
+#define VFE_BUS_IRQ_MASK(n)		(0x2044 + (n) * 4)
+#define VFE_BUS_IRQ_CLEAR(n)		(0x2050 + (n) * 4)
+#define VFE_BUS_IRQ_STATUS(n)		(0x205c + (n) * 4)
+#define		STATUS0_COMP_RESET_DONE		BIT(0)
+#define		STATUS0_COMP_REG_UPDATE0_DONE	BIT(1)
+#define		STATUS0_COMP_REG_UPDATE1_DONE	BIT(2)
+#define		STATUS0_COMP_REG_UPDATE2_DONE	BIT(3)
+#define		STATUS0_COMP_REG_UPDATE3_DONE	BIT(4)
+#define		STATUS0_COMP_REG_UPDATE_DONE(n)	BIT((n) + 1)
+#define		STATUS0_COMP0_BUF_DONE		BIT(5)
+#define		STATUS0_COMP1_BUF_DONE		BIT(6)
+#define		STATUS0_COMP2_BUF_DONE		BIT(7)
+#define		STATUS0_COMP3_BUF_DONE		BIT(8)
+#define		STATUS0_COMP4_BUF_DONE		BIT(9)
+#define		STATUS0_COMP5_BUF_DONE		BIT(10)
+#define		STATUS0_COMP_BUF_DONE(n)	BIT((n) + 5)
+#define		STATUS0_COMP_ERROR		BIT(11)
+#define		STATUS0_COMP_OVERWRITE		BIT(12)
+#define		STATUS0_OVERFLOW		BIT(13)
+#define		STATUS0_VIOLATION		BIT(14)
+/* WM_CLIENT_BUF_DONE defined for buffers 0:19 */
+#define		STATUS1_WM_CLIENT_BUF_DONE(n)		BIT(n)
+#define		STATUS1_EARLY_DONE			BIT(24)
+#define		STATUS2_DUAL_COMP0_BUF_DONE		BIT(0)
+#define		STATUS2_DUAL_COMP1_BUF_DONE		BIT(1)
+#define		STATUS2_DUAL_COMP2_BUF_DONE		BIT(2)
+#define		STATUS2_DUAL_COMP3_BUF_DONE		BIT(3)
+#define		STATUS2_DUAL_COMP4_BUF_DONE		BIT(4)
+#define		STATUS2_DUAL_COMP5_BUF_DONE		BIT(5)
+#define		STATUS2_DUAL_COMP_BUF_DONE(n)		BIT(n)
+#define		STATUS2_DUAL_COMP_ERROR			BIT(6)
+#define		STATUS2_DUAL_COMP_OVERWRITE		BIT(7)
+
+#define VFE_BUS_IRQ_CLEAR_GLOBAL		(0x2068)
+
+#define VFE_BUS_WM_DEBUG_STATUS_CFG		(0x226c)
+#define		DEBUG_STATUS_CFG_STATUS0(n)	BIT(n)
+#define		DEBUG_STATUS_CFG_STATUS1(n)	BIT(8 + (n))
+
+#define VFE_BUS_WM_ADDR_SYNC_FRAME_HEADER	(0x2080)
+
+#define VFE_BUS_WM_ADDR_SYNC_NO_SYNC		(0x2084)
+#define		BUS_VER2_MAX_CLIENTS (24)
+#define		WM_ADDR_NO_SYNC_DEFAULT_VAL \
+				((1 << BUS_VER2_MAX_CLIENTS) - 1)
+
+#define VFE_BUS_WM_CGC_OVERRIDE			(0x200c)
+#define		WM_CGC_OVERRIDE_ALL		(0xFFFFF)
+
+#define VFE_BUS_WM_TEST_BUS_CTRL		(0x211c)
+
+#define VFE_BUS_WM_STATUS0(n)			(0x2200 + (n) * 0x100)
+#define VFE_BUS_WM_STATUS1(n)			(0x2204 + (n) * 0x100)
+#define VFE_BUS_WM_CFG(n)			(0x2208 + (n) * 0x100)
+#define		WM_CFG_EN			(0)
+#define		WM_CFG_MODE			(1)
+#define			MODE_QCOM_PLAIN	(0)
+#define			MODE_MIPI_RAW	(1)
+#define		WM_CFG_VIRTUALFRAME		(2)
+#define VFE_BUS_WM_HEADER_ADDR(n)		(0x220c + (n) * 0x100)
+#define VFE_BUS_WM_HEADER_CFG(n)		(0x2210 + (n) * 0x100)
+#define VFE_BUS_WM_IMAGE_ADDR(n)		(0x2214 + (n) * 0x100)
+#define VFE_BUS_WM_IMAGE_ADDR_OFFSET(n)		(0x2218 + (n) * 0x100)
+#define VFE_BUS_WM_BUFFER_WIDTH_CFG(n)		(0x221c + (n) * 0x100)
+#define		WM_BUFFER_DEFAULT_WIDTH		(0xFF01)
+
+#define VFE_BUS_WM_BUFFER_HEIGHT_CFG(n)		(0x2220 + (n) * 0x100)
+#define VFE_BUS_WM_PACKER_CFG(n)		(0x2224 + (n) * 0x100)
+
+#define VFE_BUS_WM_STRIDE(n)			(0x2228 + (n) * 0x100)
+#define		WM_STRIDE_DEFAULT_STRIDE	(0xFF01)
+
+#define VFE_BUS_WM_IRQ_SUBSAMPLE_PERIOD(n)	(0x2248 + (n) * 0x100)
+#define VFE_BUS_WM_IRQ_SUBSAMPLE_PATTERN(n)	(0x224c + (n) * 0x100)
+#define VFE_BUS_WM_FRAMEDROP_PERIOD(n)		(0x2250 + (n) * 0x100)
+#define VFE_BUS_WM_FRAMEDROP_PATTERN(n)		(0x2254 + (n) * 0x100)
+#define VFE_BUS_WM_FRAME_INC(n)			(0x2258 + (n) * 0x100)
+#define VFE_BUS_WM_BURST_LIMIT(n)		(0x225c + (n) * 0x100)
+
+static inline void vfe_reg_set(struct vfe_device *vfe, u32 reg, u32 set_bits)
+{
+	u32 bits = readl_relaxed(vfe->base + reg);
+
+	writel_relaxed(bits | set_bits, vfe->base + reg);
+}
+
+static void vfe_global_reset(struct vfe_device *vfe)
+{
+	u32 reset_bits = GLOBAL_RESET_CMD_CORE		|
+			 GLOBAL_RESET_CMD_CAMIF		|
+			 GLOBAL_RESET_CMD_BUS		|
+			 GLOBAL_RESET_CMD_BUS_BDG	|
+			 GLOBAL_RESET_CMD_REGISTER	|
+			 GLOBAL_RESET_CMD_TESTGEN	|
+			 GLOBAL_RESET_CMD_DSP		|
+			 GLOBAL_RESET_CMD_IDLE_CGC	|
+			 GLOBAL_RESET_CMD_RDI0		|
+			 GLOBAL_RESET_CMD_RDI1		|
+			 GLOBAL_RESET_CMD_RDI2		|
+			 GLOBAL_RESET_CMD_RDI3;
+
+	writel_relaxed(BIT(31), vfe->base + VFE_IRQ_MASK_0);
+
+	/* Make sure IRQ mask has been written before resetting */
+	wmb();
+
+	writel_relaxed(reset_bits, vfe->base + VFE_GLOBAL_RESET_CMD);
+}
+
+static void vfe_wm_start(struct vfe_device *vfe, u8 wm, struct vfe_line *line)
+{
+	u32 val;
+
+	/*Set Debug Registers*/
+	val = DEBUG_STATUS_CFG_STATUS0(1) |
+	      DEBUG_STATUS_CFG_STATUS0(7);
+	writel_relaxed(val, vfe->base + VFE_BUS_WM_DEBUG_STATUS_CFG);
+
+	/* BUS_WM_INPUT_IF_ADDR_SYNC_FRAME_HEADER */
+	writel_relaxed(0, vfe->base + VFE_BUS_WM_ADDR_SYNC_FRAME_HEADER);
+
+	/* no clock gating at bus input */
+	val = WM_CGC_OVERRIDE_ALL;
+	writel_relaxed(val, vfe->base + VFE_BUS_WM_CGC_OVERRIDE);
+
+	writel_relaxed(0x0, vfe->base + VFE_BUS_WM_TEST_BUS_CTRL);
+
+	/* if addr_no_sync has default value then config the addr no sync reg */
+	val = WM_ADDR_NO_SYNC_DEFAULT_VAL;
+	writel_relaxed(val, vfe->base + VFE_BUS_WM_ADDR_SYNC_NO_SYNC);
+
+	writel_relaxed(0xf, vfe->base + VFE_BUS_WM_BURST_LIMIT(wm));
+
+	val = WM_BUFFER_DEFAULT_WIDTH;
+	writel_relaxed(val, vfe->base + VFE_BUS_WM_BUFFER_WIDTH_CFG(wm));
+
+	val = 0;
+	writel_relaxed(val, vfe->base + VFE_BUS_WM_BUFFER_HEIGHT_CFG(wm));
+
+	val = 0;
+	writel_relaxed(val, vfe->base + VFE_BUS_WM_PACKER_CFG(wm)); // XXX 1 for PLAIN8?
+
+	/* Configure stride for RDIs */
+	val = WM_STRIDE_DEFAULT_STRIDE;
+	writel_relaxed(val, vfe->base + VFE_BUS_WM_STRIDE(wm));
+
+	/* Enable WM */
+	val = 1 << WM_CFG_EN |
+	      MODE_MIPI_RAW << WM_CFG_MODE;
+	writel_relaxed(val, vfe->base + VFE_BUS_WM_CFG(wm));
+}
+
+static void vfe_wm_stop(struct vfe_device *vfe, u8 wm)
+{
+	/* Disable WM */
+	writel_relaxed(0, vfe->base + VFE_BUS_WM_CFG(wm));
+}
+
+static void vfe_wm_update(struct vfe_device *vfe, u8 wm, u32 addr,
+			  struct vfe_line *line)
+{
+	struct v4l2_pix_format_mplane *pix =
+		&line->video_out.active_fmt.fmt.pix_mp;
+	u32 stride = pix->plane_fmt[0].bytesperline;
+
+	writel_relaxed(addr, vfe->base + VFE_BUS_WM_IMAGE_ADDR(wm));
+	writel_relaxed(stride * pix->height, vfe->base + VFE_BUS_WM_FRAME_INC(wm));
+}
+
+static void vfe_reg_update(struct vfe_device *vfe, enum vfe_line_id line_id)
+{
+	vfe->reg_update |= REG_UPDATE_RDI(line_id);
+
+	/* Enforce ordering between previous reg writes and reg update */
+	wmb();
+
+	writel_relaxed(vfe->reg_update, vfe->base + VFE_REG_UPDATE_CMD);
+
+	/* Enforce ordering between reg update and subsequent reg writes */
+	wmb();
+}
+
+static inline void vfe_reg_update_clear(struct vfe_device *vfe,
+					enum vfe_line_id line_id)
+{
+	vfe->reg_update &= ~REG_UPDATE_RDI(line_id);
+}
+
+static void vfe_enable_irq_common(struct vfe_device *vfe)
+{
+	vfe_reg_set(vfe, VFE_IRQ_MASK_0, ~0u);
+	vfe_reg_set(vfe, VFE_IRQ_MASK_1, ~0u);
+
+	writel_relaxed(~0u, vfe->base + VFE_BUS_IRQ_MASK(0));
+	writel_relaxed(~0u, vfe->base + VFE_BUS_IRQ_MASK(1));
+	writel_relaxed(~0u, vfe->base + VFE_BUS_IRQ_MASK(2));
+}
+
+static void vfe_isr_halt_ack(struct vfe_device *vfe)
+{
+	complete(&vfe->halt_complete);
+}
+
+static void vfe_isr_read(struct vfe_device *vfe, u32 *status0, u32 *status1)
+{
+	*status0 = readl_relaxed(vfe->base + VFE_IRQ_STATUS_0);
+	*status1 = readl_relaxed(vfe->base + VFE_IRQ_STATUS_1);
+
+	writel_relaxed(*status0, vfe->base + VFE_IRQ_CLEAR_0);
+	writel_relaxed(*status1, vfe->base + VFE_IRQ_CLEAR_1);
+
+	/* Enforce ordering between IRQ Clear and Global IRQ Clear */
+	wmb();
+	writel_relaxed(CMD_GLOBAL_CLEAR, vfe->base + VFE_IRQ_CMD);
+}
+
+static void vfe_violation_read(struct vfe_device *vfe)
+{
+	u32 violation = readl_relaxed(vfe->base + VFE_VIOLATION_STATUS);
+
+	pr_err_ratelimited("VFE: violation = 0x%08x\n", violation);
+}
+
+/*
+ * vfe_isr - VFE module interrupt handler
+ * @irq: Interrupt line
+ * @dev: VFE device
+ *
+ * Return IRQ_HANDLED on success
+ */
+static irqreturn_t vfe_isr(int irq, void *dev)
+{
+	struct vfe_device *vfe = dev;
+	u32 status0, status1, vfe_bus_status[VFE_LINE_NUM_MAX];
+	int i, wm;
+
+	status0 = readl_relaxed(vfe->base + VFE_IRQ_STATUS_0);
+	status1 = readl_relaxed(vfe->base + VFE_IRQ_STATUS_1);
+
+	writel_relaxed(status0, vfe->base + VFE_IRQ_CLEAR_0);
+	writel_relaxed(status1, vfe->base + VFE_IRQ_CLEAR_1);
+
+	for (i = VFE_LINE_RDI0; i < vfe->res->line_num; i++) {
+		vfe_bus_status[i] = readl_relaxed(vfe->base + VFE_BUS_IRQ_STATUS(i));
+		writel_relaxed(vfe_bus_status[i], vfe->base + VFE_BUS_IRQ_CLEAR(i));
+	}
+
+	/* Enforce ordering between IRQ reading and interpretation */
+	wmb();
+
+	writel_relaxed(CMD_GLOBAL_CLEAR, vfe->base + VFE_IRQ_CMD);
+	writel_relaxed(1, vfe->base + VFE_BUS_IRQ_CLEAR_GLOBAL);
+
+	if (status0 & STATUS_0_RESET_ACK)
+		vfe->isr_ops.reset_ack(vfe);
+
+	for (i = VFE_LINE_RDI0; i < vfe->res->line_num; i++)
+		if (status0 & STATUS_0_RDI_REG_UPDATE(i))
+			vfe->isr_ops.reg_update(vfe, i);
+
+	for (i = VFE_LINE_RDI0; i < vfe->res->line_num; i++)
+		if (status0 & STATUS_1_RDI_SOF(i))
+			vfe->isr_ops.sof(vfe, i);
+
+	for (i = 0; i < MSM_VFE_COMPOSITE_IRQ_NUM; i++)
+		if (vfe_bus_status[0] & STATUS0_COMP_BUF_DONE(i))
+			vfe->isr_ops.comp_done(vfe, i);
+
+	for (wm = 0; wm < MSM_VFE_IMAGE_MASTERS_NUM; wm++)
+		if (status0 & BIT(9))
+			if (vfe_bus_status[1] & STATUS1_WM_CLIENT_BUF_DONE(wm))
+				vfe->isr_ops.wm_done(vfe, wm);
+
+	return IRQ_HANDLED;
+}
+
+/*
+ * vfe_halt - Trigger halt on VFE module and wait to complete
+ * @vfe: VFE device
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+static int vfe_halt(struct vfe_device *vfe)
+{
+	/* rely on vfe_disable_output() to stop the VFE */
+	return 0;
+}
+
+static int vfe_get_output(struct vfe_line *line)
+{
+	struct vfe_device *vfe = to_vfe(line);
+	struct vfe_output *output;
+	unsigned long flags;
+	int wm_idx;
+
+	spin_lock_irqsave(&vfe->output_lock, flags);
+
+	output = &line->output;
+	if (output->state > VFE_OUTPUT_RESERVED) {
+		dev_err(vfe->camss->dev, "Output is running\n");
+		goto error;
+	}
+
+	output->wm_num = 1;
+
+	wm_idx = vfe_reserve_wm(vfe, line->id);
+	if (wm_idx < 0) {
+		dev_err(vfe->camss->dev, "Can not reserve wm\n");
+		goto error_get_wm;
+	}
+	output->wm_idx[0] = wm_idx;
+
+	output->drop_update_idx = 0;
+
+	spin_unlock_irqrestore(&vfe->output_lock, flags);
+
+	return 0;
+
+error_get_wm:
+	vfe_release_wm(vfe, output->wm_idx[0]);
+	output->state = VFE_OUTPUT_OFF;
+error:
+	spin_unlock_irqrestore(&vfe->output_lock, flags);
+
+	return -EINVAL;
+}
+
+/*
+ * vfe_enable - Enable streaming on VFE line
+ * @line: VFE line
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+static int vfe_enable(struct vfe_line *line)
+{
+	struct vfe_device *vfe = to_vfe(line);
+	int ret;
+
+	mutex_lock(&vfe->stream_lock);
+
+	if (!vfe->stream_count)
+		vfe_enable_irq_common(vfe);
+
+	vfe->stream_count++;
+
+	mutex_unlock(&vfe->stream_lock);
+
+	ret = vfe_get_output(line);
+	if (ret < 0)
+		goto error_get_output;
+
+	ret = vfe_enable_output_v2(line);
+	if (ret < 0)
+		goto error_enable_output;
+
+	vfe->was_streaming = 1;
+
+	return 0;
+
+error_enable_output:
+	vfe_put_output(line);
+
+error_get_output:
+	mutex_lock(&vfe->stream_lock);
+
+	vfe->stream_count--;
+
+	mutex_unlock(&vfe->stream_lock);
+
+	return ret;
+}
+
+/*
+ * vfe_isr_sof - Process start of frame interrupt
+ * @vfe: VFE Device
+ * @line_id: VFE line
+ */
+static void vfe_isr_sof(struct vfe_device *vfe, enum vfe_line_id line_id)
+{
+	/* nop */
+}
+
+/*
+ * vfe_isr_reg_update - Process reg update interrupt
+ * @vfe: VFE Device
+ * @line_id: VFE line
+ */
+static void vfe_isr_reg_update(struct vfe_device *vfe, enum vfe_line_id line_id)
+{
+	struct vfe_output *output;
+	unsigned long flags;
+
+	spin_lock_irqsave(&vfe->output_lock, flags);
+	vfe->res->hw_ops->reg_update_clear(vfe, line_id);
+
+	output = &vfe->line[line_id].output;
+
+	if (output->wait_reg_update) {
+		output->wait_reg_update = 0;
+		complete(&output->reg_update);
+	}
+
+	spin_unlock_irqrestore(&vfe->output_lock, flags);
+}
+
+/*
+ * vfe_isr_wm_done - Process write master done interrupt
+ * @vfe: VFE Device
+ * @wm: Write master id
+ */
+static void vfe_isr_wm_done(struct vfe_device *vfe, u8 wm)
+{
+	struct vfe_line *line = &vfe->line[vfe->wm_output_map[wm]];
+	struct camss_buffer *ready_buf;
+	struct vfe_output *output;
+	unsigned long flags;
+	u32 index;
+	u64 ts = ktime_get_ns();
+
+	spin_lock_irqsave(&vfe->output_lock, flags);
+
+	if (vfe->wm_output_map[wm] == VFE_LINE_NONE) {
+		dev_err_ratelimited(vfe->camss->dev,
+				    "Received wm done for unmapped index\n");
+		goto out_unlock;
+	}
+	output = &vfe->line[vfe->wm_output_map[wm]].output;
+
+	ready_buf = output->buf[0];
+	if (!ready_buf) {
+		dev_err_ratelimited(vfe->camss->dev,
+				    "Missing ready buf %d!\n", output->state);
+		goto out_unlock;
+	}
+
+	ready_buf->vb.vb2_buf.timestamp = ts;
+	ready_buf->vb.sequence = output->sequence++;
+
+	index = 0;
+	output->buf[0] = output->buf[1];
+	if (output->buf[0])
+		index = 1;
+
+	output->buf[index] = vfe_buf_get_pending(output);
+
+	if (output->buf[index])
+		vfe_wm_update(vfe, output->wm_idx[0], output->buf[index]->addr[0], line);
+	else
+		output->gen2.active_num--;
+
+	spin_unlock_irqrestore(&vfe->output_lock, flags);
+
+	vb2_buffer_done(&ready_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
+
+	return;
+
+out_unlock:
+	spin_unlock_irqrestore(&vfe->output_lock, flags);
+}
+
+static const struct vfe_isr_ops vfe_isr_ops_170 = {
+	.reset_ack = vfe_isr_reset_ack,
+	.halt_ack = vfe_isr_halt_ack,
+	.reg_update = vfe_isr_reg_update,
+	.sof = vfe_isr_sof,
+	.comp_done = vfe_isr_comp_done,
+	.wm_done = vfe_isr_wm_done,
+};
+
+static const struct camss_video_ops vfe_video_ops_170 = {
+	.queue_buffer = vfe_queue_buffer_v2,
+	.flush_buffers = vfe_flush_buffers,
+};
+
+static void vfe_subdev_init(struct device *dev, struct vfe_device *vfe)
+{
+	vfe->isr_ops = vfe_isr_ops_170;
+	vfe->video_ops = vfe_video_ops_170;
+}
+
+const struct vfe_hw_ops vfe_ops_170 = {
+	.global_reset = vfe_global_reset,
+	.hw_version = vfe_hw_version,
+	.isr_read = vfe_isr_read,
+	.isr = vfe_isr,
+	.pm_domain_off = vfe_pm_domain_off,
+	.pm_domain_on = vfe_pm_domain_on,
+	.reg_update_clear = vfe_reg_update_clear,
+	.reg_update = vfe_reg_update,
+	.subdev_init = vfe_subdev_init,
+	.vfe_disable = vfe_disable,
+	.vfe_enable = vfe_enable,
+	.vfe_halt = vfe_halt,
+	.violation_read = vfe_violation_read,
+	.vfe_wm_start = vfe_wm_start,
+	.vfe_wm_stop = vfe_wm_stop,
+	.vfe_wm_update = vfe_wm_update,
+};

linux-7.2.3/drivers/media/platform/qcom/camss/camss-vfe-340.c

@@ -0,0 +1,384 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Qualcomm MSM Camera Subsystem - VFE (Video Front End) Module 340 (TFE)
+ *
+ * Copyright (c) 2025 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include <linux/delay.h>
+#include <linux/bitfield.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+
+#include "camss.h"
+#include "camss-vfe.h"
+
+#define TFE_GLOBAL_RESET_CMD				(0x014)
+#define		TFE_GLOBAL_RESET_CMD_CORE	BIT(0)
+
+#define TFE_REG_UPDATE_CMD				(0x02c)
+
+#define TFE_IRQ_CMD					(0x030)
+#define		TFE_IRQ_CMD_CLEAR		BIT(0)
+#define TFE_IRQ_MASK_0					(0x034)
+#define		TFE_IRQ_MASK_0_RST_DONE		BIT(0)
+#define		TFE_IRQ_MASK_0_BUS_WR		BIT(1)
+#define TFE_IRQ_MASK_1					(0x038)
+#define TFE_IRQ_MASK_2					(0x03c)
+#define TFE_IRQ_CLEAR_0					(0x040)
+
+#define TFE_IRQ_STATUS_0				(0x04c)
+
+#define BUS_REG(a)					(0xa00 + (a))
+
+#define TFE_BUS_IRQ_MASK_0				BUS_REG(0x18)
+#define		TFE_BUS_IRQ_MASK_RUP_DONE_MASK	GENMASK(3, 0)
+#define		TFE_BUS_IRQ_MASK_RUP_DONE(sc)	FIELD_PREP(TFE_BUS_IRQ_MASK_RUP_DONE_MASK, BIT(sc))
+#define		TFE_BUS_IRQ_MASK_BUF_DONE_MASK	GENMASK(15, 8)
+#define		TFE_BUS_IRQ_MASK_BUF_DONE(sg)	FIELD_PREP(TFE_BUS_IRQ_MASK_BUF_DONE_MASK, BIT(sg))
+#define		TFE_BUS_IRQ_MASK_0_CONS_VIOL	BIT(28)
+#define		TFE_BUS_IRQ_MASK_0_VIOL		BIT(30)
+#define		TFE_BUS_IRQ_MASK_0_IMG_VIOL	BIT(31)
+
+#define TFE_BUS_IRQ_MASK_1				BUS_REG(0x1c)
+#define TFE_BUS_IRQ_CLEAR_0				BUS_REG(0x20)
+#define TFE_BUS_IRQ_STATUS_0				BUS_REG(0x28)
+#define TFE_BUS_IRQ_CMD					BUS_REG(0x30)
+#define		TFE_BUS_IRQ_CMD_CLEAR		BIT(0)
+
+#define TFE_BUS_STATUS_CLEAR				BUS_REG(0x60)
+#define TFE_BUS_VIOLATION_STATUS			BUS_REG(0x64)
+#define TFE_BUS_OVERFLOW_STATUS				BUS_REG(0x68)
+#define TFE_BUS_IMAGE_SZ_VIOLATION_STATUS		BUS_REG(0x70)
+
+#define TFE_BUS_CLIENT_CFG(c)				BUS_REG(0x200 + (c) * 0x100)
+#define		TFE_BUS_CLIENT_CFG_EN		BIT(0)
+#define		TFE_BUS_CLIENT_CFG_AUTORECOVER	BIT(4)
+#define		TFE_BUS_CLIENT_CFG_MODE_FRAME	BIT(16)
+#define TFE_BUS_IMAGE_ADDR(c)				BUS_REG(0x204 + (c) * 0x100)
+#define TFE_BUS_FRAME_INCR(c)				BUS_REG(0x208 + (c) * 0x100)
+#define TFE_BUS_IMAGE_CFG_0(c)				BUS_REG(0x20c + (c) * 0x100)
+#define		TFE_BUS_IMAGE_CFG_0_DEFAULT	0xffff
+#define TFE_BUS_IMAGE_CFG_1(c)				BUS_REG(0x210 + (c) * 0x100)
+#define TFE_BUS_IMAGE_CFG_2(c)				BUS_REG(0x214 + (c) * 0x100)
+#define		TFE_BUS_IMAGE_CFG_2_DEFAULT	0xffff
+#define TFE_BUS_PACKER_CFG(c)				BUS_REG(0x218 + (c) * 0x100)
+#define		TFE_BUS_PACKER_CFG_FMT_PLAIN8	0x1
+#define		TFE_BUS_PACKER_CFG_FMT_PLAIN64	0xa
+#define		TFE_BUS_PACKER_CFG_FMT_MIPI10	0xc
+#define		TFE_BUS_PACKER_CFG_FMT_MIPI12	0xd
+#define TFE_BUS_IRQ_SUBSAMPLE_CFG_0(c)			BUS_REG(0x230 + (c) * 0x100)
+#define TFE_BUS_IRQ_SUBSAMPLE_CFG_1(c)			BUS_REG(0x234 + (c) * 0x100)
+#define TFE_BUS_FRAMEDROP_CFG_0(c)			BUS_REG(0x238 + (c) * 0x100)
+#define TFE_BUS_FRAMEDROP_CFG_1(c)			BUS_REG(0x23c + (c) * 0x100)
+
+#define PP_CROP_REG(a)					(0x2800 + (a))
+#define TFE_PP_CROP_CFG					PP_CROP_REG(0x60)
+#define		TFE_PP_CROP_CFG_EN	(BIT(0) | BIT(9))
+#define	TFE_PP_CROP_LINE_CFG				PP_CROP_REG(0x68)
+#define		TFE_PP_CROP_FIRST	GENMASK(29, 16)
+#define		TFE_PP_CROP_LAST	GENMASK(13, 0)
+#define	TFE_PP_CROP_PIX_CFG				PP_CROP_REG(0x6C)
+
+enum tfe_client {
+	TFE_CLI_BAYER,
+	TFE_CLI_IDEAL_RAW,
+	TFE_CLI_STATS_TINTLESS_BG,
+	TFE_CLI_STATS_BHIST,
+	TFE_CLI_STATS_AWB_BG,
+	TFE_CLI_STATS_AEC_BG,
+	TFE_CLI_STATS_BAF,
+	TFE_CLI_RDI0,
+	TFE_CLI_RDI1,
+	TFE_CLI_RDI2,
+	TFE_CLI_NUM
+};
+
+enum tfe_iface {
+	TFE_IFACE_PIX,
+	TFE_IFACE_RDI0,
+	TFE_IFACE_RDI1,
+	TFE_IFACE_RDI2,
+	TFE_IFACE_NUM
+};
+
+enum tfe_subgroups {
+	TFE_SUBGROUP_BAYER,
+	TFE_SUBGROUP_IDEAL_RAW,
+	TFE_SUBGROUP_HDR,
+	TFE_SUBGROUP_BG,
+	TFE_SUBGROUP_BAF,
+	TFE_SUBGROUP_RDI0,
+	TFE_SUBGROUP_RDI1,
+	TFE_SUBGROUP_RDI2,
+	TFE_SUBGROUP_NUM
+};
+
+static enum tfe_client tfe_wm_client_map[VFE_LINE_NUM_MAX] = {
+	[VFE_LINE_RDI0] = TFE_CLI_RDI0,
+	[VFE_LINE_RDI1] = TFE_CLI_RDI1,
+	[VFE_LINE_RDI2] = TFE_CLI_RDI2,
+	[VFE_LINE_PIX] = TFE_CLI_BAYER,
+};
+
+static enum tfe_iface tfe_line_iface_map[VFE_LINE_NUM_MAX] = {
+	[VFE_LINE_RDI0] = TFE_IFACE_RDI0,
+	[VFE_LINE_RDI1] = TFE_IFACE_RDI1,
+	[VFE_LINE_RDI2] = TFE_IFACE_RDI2,
+	[VFE_LINE_PIX] = TFE_IFACE_PIX,
+};
+
+static enum vfe_line_id tfe_subgroup_line_map[TFE_SUBGROUP_NUM] = {
+	[TFE_SUBGROUP_BAYER] = VFE_LINE_PIX,
+	[TFE_SUBGROUP_IDEAL_RAW] = VFE_LINE_PIX,
+	[TFE_SUBGROUP_HDR] = VFE_LINE_PIX,
+	[TFE_SUBGROUP_BG] = VFE_LINE_PIX,
+	[TFE_SUBGROUP_BAF] = VFE_LINE_PIX,
+	[TFE_SUBGROUP_RDI0] = VFE_LINE_RDI0,
+	[TFE_SUBGROUP_RDI1] = VFE_LINE_RDI1,
+	[TFE_SUBGROUP_RDI2] = VFE_LINE_RDI2,
+};
+
+static inline enum tfe_iface  __line_to_iface(enum vfe_line_id line_id)
+{
+	if (line_id <= VFE_LINE_NONE || line_id >= VFE_LINE_NUM_MAX) {
+		pr_warn("VFE: Invalid line %d\n", line_id);
+		return TFE_IFACE_RDI0;
+	}
+
+	return tfe_line_iface_map[line_id];
+}
+
+static inline enum vfe_line_id __iface_to_line(unsigned int iface)
+{
+	int i;
+
+	for (i = 0; i < VFE_LINE_NUM_MAX; i++) {
+		if (tfe_line_iface_map[i] == iface)
+			return i;
+	}
+
+	return VFE_LINE_NONE;
+}
+
+static inline enum vfe_line_id __subgroup_to_line(enum tfe_subgroups sg)
+{
+	if (sg >= TFE_SUBGROUP_NUM)
+		return VFE_LINE_NONE;
+
+	return tfe_subgroup_line_map[sg];
+}
+
+static void vfe_global_reset(struct vfe_device *vfe)
+{
+	writel(TFE_IRQ_MASK_0_RST_DONE, vfe->base + TFE_IRQ_MASK_0);
+	writel(TFE_GLOBAL_RESET_CMD_CORE, vfe->base + TFE_GLOBAL_RESET_CMD);
+}
+
+static irqreturn_t vfe_isr(int irq, void *dev)
+{
+	struct vfe_device *vfe = dev;
+	u32 status;
+	int i;
+
+	status = readl_relaxed(vfe->base + TFE_IRQ_STATUS_0);
+	writel_relaxed(status, vfe->base + TFE_IRQ_CLEAR_0);
+	writel_relaxed(TFE_IRQ_CMD_CLEAR, vfe->base + TFE_IRQ_CMD);
+
+	if (status & TFE_IRQ_MASK_0_RST_DONE) {
+		dev_dbg(vfe->camss->dev, "VFE%u: Reset done!", vfe->id);
+		vfe_isr_reset_ack(vfe);
+	}
+
+	if (status & TFE_IRQ_MASK_0_BUS_WR) {
+		u32 bus_status = readl_relaxed(vfe->base + TFE_BUS_IRQ_STATUS_0);
+
+		writel_relaxed(bus_status, vfe->base + TFE_BUS_IRQ_CLEAR_0);
+		writel_relaxed(TFE_BUS_IRQ_CMD_CLEAR, vfe->base + TFE_BUS_IRQ_CMD);
+
+		for (i = 0; i < TFE_IFACE_NUM; i++) {
+			if (bus_status & TFE_BUS_IRQ_MASK_RUP_DONE(i))
+				vfe->res->hw_ops->reg_update_clear(vfe, __iface_to_line(i));
+		}
+
+		for (i = 0; i < TFE_SUBGROUP_NUM; i++) {
+			if (bus_status & TFE_BUS_IRQ_MASK_BUF_DONE(i))
+				vfe_buf_done(vfe, __subgroup_to_line(i));
+		}
+
+		if (bus_status & TFE_BUS_IRQ_MASK_0_CONS_VIOL)
+			dev_err_ratelimited(vfe->camss->dev, "VFE%u: Bad config violation",
+					    vfe->id);
+
+		if (bus_status & TFE_BUS_IRQ_MASK_0_VIOL)
+			dev_err_ratelimited(vfe->camss->dev, "VFE%u: Input data violation",
+					    vfe->id);
+
+		if (bus_status & TFE_BUS_IRQ_MASK_0_IMG_VIOL)
+			dev_err_ratelimited(vfe->camss->dev, "VFE%u: Image size violation",
+					    vfe->id);
+	}
+
+	status = readl_relaxed(vfe->base + TFE_BUS_OVERFLOW_STATUS);
+	if (status) {
+		writel_relaxed(status, vfe->base + TFE_BUS_STATUS_CLEAR);
+		for (i = 0; i < TFE_CLI_NUM; i++) {
+			if (status & BIT(i))
+				dev_err_ratelimited(vfe->camss->dev,
+						    "VFE%u: bus overflow for client %u\n",
+						    vfe->id, i);
+		}
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int vfe_halt(struct vfe_device *vfe)
+{
+	/* rely on vfe_disable_output() to stop the VFE */
+	return 0;
+}
+
+static void vfe_enable_irq(struct vfe_device *vfe)
+{
+	writel(TFE_IRQ_MASK_0_RST_DONE | TFE_IRQ_MASK_0_BUS_WR,
+	       vfe->base + TFE_IRQ_MASK_0);
+	writel(TFE_BUS_IRQ_MASK_RUP_DONE_MASK | TFE_BUS_IRQ_MASK_BUF_DONE_MASK |
+	       TFE_BUS_IRQ_MASK_0_CONS_VIOL | TFE_BUS_IRQ_MASK_0_VIOL |
+	       TFE_BUS_IRQ_MASK_0_IMG_VIOL, vfe->base + TFE_BUS_IRQ_MASK_0);
+}
+
+static void vfe_wm_update(struct vfe_device *vfe, u8 wm, u32 addr,
+			  struct vfe_line *line)
+{
+	u8 client = tfe_wm_client_map[wm];
+
+	writel_relaxed(addr, vfe->base + TFE_BUS_IMAGE_ADDR(client));
+}
+
+static u32 vfe_packer_format(struct vfe_device *vfe, u32 pixelformat)
+{
+	const struct camss_formats *fmt = vfe->res->formats_rdi;
+	unsigned int bpp = 0;
+	int i;
+
+	for (i = 0; i < fmt->nformats; i++) {
+		if (fmt->formats[i].pixelformat == pixelformat) {
+			bpp = fmt->formats[i].mbus_bpp;
+			break;
+		}
+	}
+
+	switch (bpp) {
+	case 10:
+		return TFE_BUS_PACKER_CFG_FMT_MIPI10;
+	case 12:
+		return TFE_BUS_PACKER_CFG_FMT_MIPI12;
+	default:
+		return TFE_BUS_PACKER_CFG_FMT_PLAIN8;
+	}
+}
+
+static void vfe_wm_start(struct vfe_device *vfe, u8 wm, struct vfe_line *line)
+{
+	struct v4l2_pix_format_mplane *pix = &line->video_out.active_fmt.fmt.pix_mp;
+	u32 stride = pix->plane_fmt[0].bytesperline;
+	u8 client = tfe_wm_client_map[wm];
+	u32 cfg = TFE_BUS_CLIENT_CFG_EN;
+
+	if (client == TFE_CLI_BAYER) { /* PIX - Line based */
+		struct v4l2_rect *crop = &line->crop;
+
+		/* Cropping */
+		writel_relaxed(TFE_PP_CROP_CFG_EN, vfe->base + TFE_PP_CROP_CFG);
+		writel_relaxed(FIELD_PREP(TFE_PP_CROP_FIRST, crop->top) |
+			       FIELD_PREP(TFE_PP_CROP_LAST, crop->top + crop->height - 1),
+			       vfe->base + TFE_PP_CROP_LINE_CFG);
+		writel_relaxed(FIELD_PREP(TFE_PP_CROP_FIRST, crop->left) |
+			       FIELD_PREP(TFE_PP_CROP_LAST, crop->left + crop->width - 1),
+			       vfe->base + TFE_PP_CROP_PIX_CFG);
+
+		/* Write Engine */
+		writel_relaxed(pix->width | (pix->height << 16),
+			       vfe->base + TFE_BUS_IMAGE_CFG_0(client));
+		writel_relaxed(0u, vfe->base + TFE_BUS_IMAGE_CFG_1(client));
+		writel_relaxed(stride, vfe->base + TFE_BUS_IMAGE_CFG_2(client));
+		writel_relaxed(stride * pix->height, vfe->base + TFE_BUS_FRAME_INCR(client));
+		writel_relaxed(vfe_packer_format(vfe, pix->pixelformat),
+			       vfe->base + TFE_BUS_PACKER_CFG(client));
+
+		cfg |= TFE_BUS_CLIENT_CFG_AUTORECOVER;
+	} else { /* RDI - Frame based */
+		writel_relaxed(TFE_BUS_IMAGE_CFG_0_DEFAULT,
+			       vfe->base + TFE_BUS_IMAGE_CFG_0(client));
+		writel_relaxed(0u, vfe->base + TFE_BUS_IMAGE_CFG_1(client));
+		writel_relaxed(TFE_BUS_IMAGE_CFG_2_DEFAULT,
+			       vfe->base + TFE_BUS_IMAGE_CFG_2(client));
+		writel_relaxed(stride * pix->height, vfe->base + TFE_BUS_FRAME_INCR(client));
+		writel_relaxed(TFE_BUS_PACKER_CFG_FMT_PLAIN64,
+			       vfe->base + TFE_BUS_PACKER_CFG(client));
+		cfg |= TFE_BUS_CLIENT_CFG_MODE_FRAME;
+	}
+
+	/* No dropped frames, one irq per frame */
+	writel_relaxed(0, vfe->base + TFE_BUS_FRAMEDROP_CFG_0(client));
+	writel_relaxed(1, vfe->base + TFE_BUS_FRAMEDROP_CFG_1(client));
+	writel_relaxed(0, vfe->base + TFE_BUS_IRQ_SUBSAMPLE_CFG_0(client));
+	writel_relaxed(1, vfe->base + TFE_BUS_IRQ_SUBSAMPLE_CFG_1(client));
+
+	vfe_enable_irq(vfe);
+
+	writel(cfg, vfe->base + TFE_BUS_CLIENT_CFG(client));
+
+	dev_dbg(vfe->camss->dev, "VFE%u: Started client %u width %u height %u stride %u\n",
+		vfe->id, client, pix->width, pix->height, stride);
+}
+
+static void vfe_wm_stop(struct vfe_device *vfe, u8 wm)
+{
+	u8 client = tfe_wm_client_map[wm];
+
+	writel(0, vfe->base + TFE_BUS_CLIENT_CFG(client));
+
+	dev_dbg(vfe->camss->dev, "VFE%u: Stopped client %u\n", vfe->id, client);
+}
+
+static const struct camss_video_ops vfe_video_ops_520 = {
+	.queue_buffer = vfe_queue_buffer_v2,
+	.flush_buffers = vfe_flush_buffers,
+};
+
+static void vfe_subdev_init(struct device *dev, struct vfe_device *vfe)
+{
+	vfe->video_ops = vfe_video_ops_520;
+}
+
+static void vfe_reg_update(struct vfe_device *vfe, enum vfe_line_id line_id)
+{
+	vfe->reg_update |= BIT(__line_to_iface(line_id));
+	writel_relaxed(vfe->reg_update, vfe->base + TFE_REG_UPDATE_CMD);
+}
+
+static void vfe_reg_update_clear(struct vfe_device *vfe, enum vfe_line_id line_id)
+{
+	vfe->reg_update &= ~BIT(__line_to_iface(line_id));
+}
+
+const struct vfe_hw_ops vfe_ops_340 = {
+	.global_reset = vfe_global_reset,
+	.hw_version = vfe_hw_version,
+	.isr = vfe_isr,
+	.pm_domain_off = vfe_pm_domain_off,
+	.pm_domain_on = vfe_pm_domain_on,
+	.subdev_init = vfe_subdev_init,
+	.vfe_disable = vfe_disable,
+	.vfe_enable = vfe_enable_v2,
+	.vfe_halt = vfe_halt,
+	.vfe_wm_start = vfe_wm_start,
+	.vfe_wm_stop = vfe_wm_stop,
+	.vfe_buf_done = vfe_buf_done,
+	.vfe_wm_update = vfe_wm_update,
+	.reg_update = vfe_reg_update,
+	.reg_update_clear = vfe_reg_update_clear,
+};

linux-7.2.3/drivers/media/platform/qcom/camss/camss-vfe-480.c

@@ -0,0 +1,299 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * camss-vfe-480.c
+ *
+ * Qualcomm MSM Camera Subsystem - VFE (Video Front End) Module v480 (SM8250)
+ *
+ * Copyright (C) 2020-2021 Linaro Ltd.
+ * Copyright (C) 2021 Jonathan Marek
+ */
+
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+
+#include "camss.h"
+#include "camss-vfe.h"
+
+#define VFE_GLOBAL_RESET_CMD		(vfe_is_lite(vfe) ? 0x0c : 0x1c)
+#define	    GLOBAL_RESET_HW_AND_REG	(vfe_is_lite(vfe) ? BIT(1) : BIT(0))
+
+#define VFE_REG_UPDATE_CMD		(vfe_is_lite(vfe) ? 0x20 : 0x34)
+static inline int reg_update_rdi(struct vfe_device *vfe, int n)
+{
+	return vfe_is_lite(vfe) ? BIT(n) : BIT(1 + (n));
+}
+
+#define	    REG_UPDATE_RDI		reg_update_rdi
+#define VFE_IRQ_CMD			(vfe_is_lite(vfe) ? 0x24 : 0x38)
+#define     IRQ_CMD_GLOBAL_CLEAR	BIT(0)
+
+#define VFE_IRQ_MASK(n)			((vfe_is_lite(vfe) ? 0x28 : 0x3c) + (n) * 4)
+#define	    IRQ_MASK_0_RESET_ACK	(vfe_is_lite(vfe) ? BIT(17) : BIT(0))
+#define	    IRQ_MASK_0_BUS_TOP_IRQ	(vfe_is_lite(vfe) ? BIT(4) : BIT(7))
+#define VFE_IRQ_CLEAR(n)		((vfe_is_lite(vfe) ? 0x34 : 0x48) + (n) * 4)
+#define VFE_IRQ_STATUS(n)		((vfe_is_lite(vfe) ? 0x40 : 0x54) + (n) * 4)
+
+#define BUS_REG_BASE			(vfe_is_lite(vfe) ? 0x1a00 : 0xaa00)
+
+#define VFE_BUS_WM_CGC_OVERRIDE		(BUS_REG_BASE + 0x08)
+#define		WM_CGC_OVERRIDE_ALL	(0x3FFFFFF)
+
+#define VFE_BUS_WM_TEST_BUS_CTRL	(BUS_REG_BASE + 0xdc)
+
+#define VFE_BUS_IRQ_MASK(n)		(BUS_REG_BASE + 0x18 + (n) * 4)
+static inline int bus_irq_mask_0_rdi_rup(struct vfe_device *vfe, int n)
+{
+	return vfe_is_lite(vfe) ? BIT(n) : BIT(3 + (n));
+}
+
+#define     BUS_IRQ_MASK_0_RDI_RUP	bus_irq_mask_0_rdi_rup
+static inline int bus_irq_mask_0_comp_done(struct vfe_device *vfe, int n)
+{
+	return vfe_is_lite(vfe) ? BIT(4 + (n)) : BIT(6 + (n));
+}
+
+#define     BUS_IRQ_MASK_0_COMP_DONE	bus_irq_mask_0_comp_done
+#define VFE_BUS_IRQ_CLEAR(n)		(BUS_REG_BASE + 0x20 + (n) * 4)
+#define VFE_BUS_IRQ_STATUS(n)		(BUS_REG_BASE + 0x28 + (n) * 4)
+#define VFE_BUS_IRQ_CLEAR_GLOBAL	(BUS_REG_BASE + 0x30)
+
+#define VFE_BUS_WM_CFG(n)		(BUS_REG_BASE + 0x200 + (n) * 0x100)
+#define		WM_CFG_EN			(0)
+#define		WM_CFG_MODE			(16)
+#define			MODE_QCOM_PLAIN	(0)
+#define			MODE_MIPI_RAW	(1)
+#define VFE_BUS_WM_IMAGE_ADDR(n)	(BUS_REG_BASE + 0x204 + (n) * 0x100)
+#define VFE_BUS_WM_FRAME_INCR(n)	(BUS_REG_BASE + 0x208 + (n) * 0x100)
+#define VFE_BUS_WM_IMAGE_CFG_0(n)	(BUS_REG_BASE + 0x20c + (n) * 0x100)
+#define		WM_IMAGE_CFG_0_DEFAULT_WIDTH	(0xFFFF)
+#define VFE_BUS_WM_IMAGE_CFG_1(n)	(BUS_REG_BASE + 0x210 + (n) * 0x100)
+#define VFE_BUS_WM_IMAGE_CFG_2(n)	(BUS_REG_BASE + 0x214 + (n) * 0x100)
+#define VFE_BUS_WM_PACKER_CFG(n)	(BUS_REG_BASE + 0x218 + (n) * 0x100)
+#define VFE_BUS_WM_HEADER_ADDR(n)	(BUS_REG_BASE + 0x220 + (n) * 0x100)
+#define VFE_BUS_WM_HEADER_INCR(n)	(BUS_REG_BASE + 0x224 + (n) * 0x100)
+#define VFE_BUS_WM_HEADER_CFG(n)	(BUS_REG_BASE + 0x228 + (n) * 0x100)
+
+#define VFE_BUS_WM_IRQ_SUBSAMPLE_PERIOD(n)	(BUS_REG_BASE + 0x230 + (n) * 0x100)
+#define VFE_BUS_WM_IRQ_SUBSAMPLE_PATTERN(n)	(BUS_REG_BASE + 0x234 + (n) * 0x100)
+#define VFE_BUS_WM_FRAMEDROP_PERIOD(n)		(BUS_REG_BASE + 0x238 + (n) * 0x100)
+#define VFE_BUS_WM_FRAMEDROP_PATTERN(n)		(BUS_REG_BASE + 0x23c + (n) * 0x100)
+
+#define VFE_BUS_WM_SYSTEM_CACHE_CFG(n)	(BUS_REG_BASE + 0x260 + (n) * 0x100)
+#define VFE_BUS_WM_BURST_LIMIT(n)	(BUS_REG_BASE + 0x264 + (n) * 0x100)
+
+/* for titan 480, each bus client is hardcoded to a specific path
+ * and each bus client is part of a hardcoded "comp group"
+ */
+#define RDI_WM(n)			((vfe_is_lite(vfe) ? 0 : 23) + (n))
+#define RDI_COMP_GROUP(n)		((vfe_is_lite(vfe) ? 0 : 11) + (n))
+
+#define MAX_VFE_OUTPUT_LINES	4
+
+static void vfe_global_reset(struct vfe_device *vfe)
+{
+	writel_relaxed(IRQ_MASK_0_RESET_ACK, vfe->base + VFE_IRQ_MASK(0));
+	writel_relaxed(GLOBAL_RESET_HW_AND_REG, vfe->base + VFE_GLOBAL_RESET_CMD);
+}
+
+static void vfe_wm_start(struct vfe_device *vfe, u8 wm, struct vfe_line *line)
+{
+	struct v4l2_pix_format_mplane *pix =
+		&line->video_out.active_fmt.fmt.pix_mp;
+
+	wm = RDI_WM(wm); /* map to actual WM used (from wm=RDI index) */
+
+	/* no clock gating at bus input */
+	writel_relaxed(WM_CGC_OVERRIDE_ALL, vfe->base + VFE_BUS_WM_CGC_OVERRIDE);
+
+	writel_relaxed(0x0, vfe->base + VFE_BUS_WM_TEST_BUS_CTRL);
+
+	writel_relaxed(pix->plane_fmt[0].bytesperline * pix->height,
+		       vfe->base + VFE_BUS_WM_FRAME_INCR(wm));
+	writel_relaxed(0xf, vfe->base + VFE_BUS_WM_BURST_LIMIT(wm));
+	writel_relaxed(WM_IMAGE_CFG_0_DEFAULT_WIDTH,
+		       vfe->base + VFE_BUS_WM_IMAGE_CFG_0(wm));
+	writel_relaxed(pix->plane_fmt[0].bytesperline,
+		       vfe->base + VFE_BUS_WM_IMAGE_CFG_2(wm));
+	writel_relaxed(0, vfe->base + VFE_BUS_WM_PACKER_CFG(wm));
+
+	/* no dropped frames, one irq per frame */
+	writel_relaxed(0, vfe->base + VFE_BUS_WM_FRAMEDROP_PERIOD(wm));
+	writel_relaxed(1, vfe->base + VFE_BUS_WM_FRAMEDROP_PATTERN(wm));
+	writel_relaxed(0, vfe->base + VFE_BUS_WM_IRQ_SUBSAMPLE_PERIOD(wm));
+	writel_relaxed(1, vfe->base + VFE_BUS_WM_IRQ_SUBSAMPLE_PATTERN(wm));
+
+	writel_relaxed(1 << WM_CFG_EN | MODE_MIPI_RAW << WM_CFG_MODE,
+		       vfe->base + VFE_BUS_WM_CFG(wm));
+}
+
+static void vfe_wm_stop(struct vfe_device *vfe, u8 wm)
+{
+	wm = RDI_WM(wm); /* map to actual WM used (from wm=RDI index) */
+	writel_relaxed(0, vfe->base + VFE_BUS_WM_CFG(wm));
+}
+
+static void vfe_wm_update(struct vfe_device *vfe, u8 wm, u32 addr,
+			  struct vfe_line *line)
+{
+	wm = RDI_WM(wm); /* map to actual WM used (from wm=RDI index) */
+	writel_relaxed(addr, vfe->base + VFE_BUS_WM_IMAGE_ADDR(wm));
+}
+
+static void vfe_reg_update(struct vfe_device *vfe, enum vfe_line_id line_id)
+{
+	vfe->reg_update |= REG_UPDATE_RDI(vfe, line_id);
+	writel_relaxed(vfe->reg_update, vfe->base + VFE_REG_UPDATE_CMD);
+}
+
+static inline void vfe_reg_update_clear(struct vfe_device *vfe,
+					enum vfe_line_id line_id)
+{
+	vfe->reg_update &= ~REG_UPDATE_RDI(vfe, line_id);
+}
+
+static void vfe_enable_irq(struct vfe_device *vfe)
+{
+	int i;
+	u32 bus_irq_mask = 0;
+
+	if (!vfe->stream_count)
+		/* enable reset ack IRQ and top BUS status IRQ */
+		writel(IRQ_MASK_0_RESET_ACK | IRQ_MASK_0_BUS_TOP_IRQ,
+		       vfe->base + VFE_IRQ_MASK(0));
+
+	for (i = 0; i < MAX_VFE_OUTPUT_LINES; i++) {
+		/* Enable IRQ for newly added lines, but also keep already running lines's IRQ */
+		if (vfe->line[i].output.state == VFE_OUTPUT_RESERVED ||
+		    vfe->line[i].output.state == VFE_OUTPUT_ON) {
+			bus_irq_mask |= BUS_IRQ_MASK_0_RDI_RUP(vfe, i)
+					| BUS_IRQ_MASK_0_COMP_DONE(vfe, RDI_COMP_GROUP(i));
+			}
+	}
+
+	writel(bus_irq_mask, vfe->base + VFE_BUS_IRQ_MASK(0));
+}
+
+static void vfe_isr_reg_update(struct vfe_device *vfe, enum vfe_line_id line_id);
+
+/*
+ * vfe_isr - VFE module interrupt handler
+ * @irq: Interrupt line
+ * @dev: VFE device
+ *
+ * Return IRQ_HANDLED on success
+ */
+static irqreturn_t vfe_isr(int irq, void *dev)
+{
+	struct vfe_device *vfe = dev;
+	u32 status;
+	int i;
+
+	status = readl_relaxed(vfe->base + VFE_IRQ_STATUS(0));
+	writel_relaxed(status, vfe->base + VFE_IRQ_CLEAR(0));
+	writel_relaxed(IRQ_CMD_GLOBAL_CLEAR, vfe->base + VFE_IRQ_CMD);
+
+	if (status & IRQ_MASK_0_RESET_ACK)
+		vfe_isr_reset_ack(vfe);
+
+	if (status & IRQ_MASK_0_BUS_TOP_IRQ) {
+		u32 status = readl_relaxed(vfe->base + VFE_BUS_IRQ_STATUS(0));
+
+		writel_relaxed(status, vfe->base + VFE_BUS_IRQ_CLEAR(0));
+		writel_relaxed(1, vfe->base + VFE_BUS_IRQ_CLEAR_GLOBAL);
+
+		for (i = 0; i < MAX_VFE_OUTPUT_LINES; i++) {
+			if (status & BUS_IRQ_MASK_0_RDI_RUP(vfe, i))
+				vfe_isr_reg_update(vfe, i);
+		}
+
+		/* Loop through all WMs IRQs */
+		for (i = 0; i < MSM_VFE_IMAGE_MASTERS_NUM; i++) {
+			if (status & BUS_IRQ_MASK_0_COMP_DONE(vfe, RDI_COMP_GROUP(i)))
+				vfe_buf_done(vfe, i);
+		}
+	}
+
+	return IRQ_HANDLED;
+}
+
+/*
+ * vfe_halt - Trigger halt on VFE module and wait to complete
+ * @vfe: VFE device
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+static int vfe_halt(struct vfe_device *vfe)
+{
+	/* rely on vfe_disable_output() to stop the VFE */
+	return 0;
+}
+
+/*
+ * vfe_isr_reg_update - Process reg update interrupt
+ * @vfe: VFE Device
+ * @line_id: VFE line
+ */
+static void vfe_isr_reg_update(struct vfe_device *vfe, enum vfe_line_id line_id)
+{
+	struct vfe_output *output;
+	unsigned long flags;
+
+	spin_lock_irqsave(&vfe->output_lock, flags);
+	vfe_reg_update_clear(vfe, line_id);
+
+	output = &vfe->line[line_id].output;
+
+	if (output->wait_reg_update) {
+		output->wait_reg_update = 0;
+		complete(&output->reg_update);
+	}
+
+	spin_unlock_irqrestore(&vfe->output_lock, flags);
+}
+
+static const struct camss_video_ops vfe_video_ops_480 = {
+	.queue_buffer = vfe_queue_buffer_v2,
+	.flush_buffers = vfe_flush_buffers,
+};
+
+static void vfe_subdev_init(struct device *dev, struct vfe_device *vfe)
+{
+	vfe->video_ops = vfe_video_ops_480;
+}
+
+static void vfe_isr_read(struct vfe_device *vfe, u32 *value0, u32 *value1)
+{
+	/* nop */
+}
+
+static void vfe_violation_read(struct vfe_device *vfe)
+{
+	/* nop */
+}
+
+static void vfe_buf_done_480(struct vfe_device *vfe, int port_id)
+{
+	/* nop */
+}
+
+const struct vfe_hw_ops vfe_ops_480 = {
+	.enable_irq = vfe_enable_irq,
+	.global_reset = vfe_global_reset,
+	.hw_version = vfe_hw_version,
+	.isr = vfe_isr,
+	.isr_read = vfe_isr_read,
+	.reg_update = vfe_reg_update,
+	.reg_update_clear = vfe_reg_update_clear,
+	.pm_domain_off = vfe_pm_domain_off,
+	.pm_domain_on = vfe_pm_domain_on,
+	.subdev_init = vfe_subdev_init,
+	.vfe_disable = vfe_disable,
+	.vfe_enable = vfe_enable_v2,
+	.vfe_halt = vfe_halt,
+	.violation_read = vfe_violation_read,
+	.vfe_wm_start = vfe_wm_start,
+	.vfe_wm_stop = vfe_wm_stop,
+	.vfe_buf_done = vfe_buf_done_480,
+	.vfe_wm_update = vfe_wm_update,
+};

linux-7.2.3/drivers/media/platform/qcom/camss/camss-vfe-680.c

@@ -0,0 +1,244 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * camss-vfe-680.c
+ *
+ * Qualcomm MSM Camera Subsystem - VFE (Video Front End) Module v680
+ *
+ * Copyright (C) 2025 Linaro Ltd.
+ */
+
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+
+#include "camss.h"
+#include "camss-vfe.h"
+
+#define VFE_TOP_IRQn_STATUS(vfe, n)		((vfe_is_lite(vfe) ? 0x1c : 0x44) + (n) * 4)
+#define VFE_TOP_IRQn_MASK(vfe, n)		((vfe_is_lite(vfe) ? 0x24 : 0x34) + (n) * 4)
+#define VFE_TOP_IRQn_CLEAR(vfe, n)		((vfe_is_lite(vfe) ? 0x2c : 0x3c) + (n) * 4)
+#define		VFE_IRQ1_SOF(vfe, n)		((vfe_is_lite(vfe) ? BIT(2) : BIT(8)) << ((n) * 2))
+#define		VFE_IRQ1_EOF(vfe, n)		((vfe_is_lite(vfe) ? BIT(3) : BIT(9)) << ((n) * 2))
+#define VFE_TOP_IRQ_CMD(vfe)			(vfe_is_lite(vfe) ? 0x38 : 0x30)
+#define		VFE_TOP_IRQ_CMD_GLOBAL_CLEAR	BIT(0)
+#define VFE_TOP_DIAG_CONFIG			(vfe_is_lite(vfe) ? 0x40 : 0x50)
+
+#define VFE_TOP_DEBUG_11(vfe)			(vfe_is_lite(vfe) ? 0x40 : 0xcc)
+#define VFE_TOP_DEBUG_12(vfe)			(vfe_is_lite(vfe) ? 0x40 : 0xd0)
+#define VFE_TOP_DEBUG_13(vfe)			(vfe_is_lite(vfe) ? 0x40 : 0xd4)
+
+#define VFE_BUS_IRQn_MASK(vfe, n)		((vfe_is_lite(vfe) ? 0x218 : 0xc18) + (n) * 4)
+#define VFE_BUS_IRQn_CLEAR(vfe, n)		((vfe_is_lite(vfe) ? 0x220 : 0xc20) + (n) * 4)
+#define VFE_BUS_IRQn_STATUS(vfe, n)		((vfe_is_lite(vfe) ? 0x228 : 0xc28) + (n) * 4)
+#define VFE_BUS_IRQ_GLOBAL_CLEAR(vfe)		(vfe_is_lite(vfe) ? 0x230 : 0xc30)
+#define VFE_BUS_WR_VIOLATION_STATUS(vfe)	(vfe_is_lite(vfe) ? 0x264 : 0xc64)
+#define VFE_BUS_WR_OVERFLOW_STATUS(vfe)		(vfe_is_lite(vfe) ? 0x268 : 0xc68)
+#define VFE_BUS_WR_IMAGE_VIOLATION_STATUS(vfe)	(vfe_is_lite(vfe) ? 0x270 : 0xc70)
+
+#define VFE_BUS_WRITE_CLIENT_CFG(vfe, c)	((vfe_is_lite(vfe) ? 0x400 : 0xe00) + (c) * 0x100)
+#define		VFE_BUS_WRITE_CLIENT_CFG_EN	BIT(0)
+#define VFE_BUS_IMAGE_ADDR(vfe, c)		((vfe_is_lite(vfe) ? 0x404 : 0xe04) + (c) * 0x100)
+#define VFE_BUS_FRAME_INCR(vfe, c)		((vfe_is_lite(vfe) ? 0x408 : 0xe08) + (c) * 0x100)
+#define VFE_BUS_IMAGE_CFG0(vfe, c)		((vfe_is_lite(vfe) ? 0x40c : 0xe0c) + (c) * 0x100)
+#define		VFE_BUS_IMAGE_CFG0_DATA(h, s)	(((h) << 16) | ((s) >> 4))
+#define WM_IMAGE_CFG_0_DEFAULT_WIDTH		(0xFFFF)
+
+#define VFE_BUS_IMAGE_CFG1(vfe, c)		((vfe_is_lite(vfe) ? 0x410 : 0xe10) + (c) * 0x100)
+#define VFE_BUS_IMAGE_CFG2(vfe, c)		((vfe_is_lite(vfe) ? 0x414 : 0xe14) + (c) * 0x100)
+#define VFE_BUS_PACKER_CFG(vfe, c)		((vfe_is_lite(vfe) ? 0x418 : 0xe18) + (c) * 0x100)
+#define VFE_BUS_IRQ_SUBSAMPLE_PERIOD(vfe, c)	((vfe_is_lite(vfe) ? 0x430 : 0xe30) + (c) * 0x100)
+#define VFE_BUS_IRQ_SUBSAMPLE_PATTERN(vfe, c)	((vfe_is_lite(vfe) ? 0x434 : 0xe34) + (c) * 0x100)
+#define VFE_BUS_FRAMEDROP_PERIOD(vfe, c)	((vfe_is_lite(vfe) ? 0x438 : 0xe38) + (c) * 0x100)
+#define VFE_BUS_FRAMEDROP_PATTERN(vfe, c)	((vfe_is_lite(vfe) ? 0x43c : 0xe3c) + (c) * 0x100)
+#define VFE_BUS_MMU_PREFETCH_CFG(vfe, c)	((vfe_is_lite(vfe) ? 0x460 : 0xe60) + (c) * 0x100)
+#define		VFE_BUS_MMU_PREFETCH_CFG_EN	BIT(0)
+#define VFE_BUS_MMU_PREFETCH_MAX_OFFSET(vfe, c)	((vfe_is_lite(vfe) ? 0x464 : 0xe64) + (c) * 0x100)
+#define VFE_BUS_ADDR_STATUS0(vfe, c)		((vfe_is_lite(vfe) ? 0x470 : 0xe70) + (c) * 0x100)
+
+/*
+ * TODO: differentiate the port id based on requested type of RDI, BHIST etc
+ *
+ * IFE write master IDs
+ *
+ * VIDEO_FULL_Y		0
+ * VIDEO_FULL_C		1
+ * VIDEO_DS_4:1		2
+ * VIDEO_DS_16:1	3
+ * DISPLAY_FULL_Y	4
+ * DISPLAY_FULL_C	5
+ * DISPLAY_DS_4:1	6
+ * DISPLAY_DS_16:1	7
+ * FD_Y			8
+ * FD_C			9
+ * PIXEL_RAW		10
+ * STATS_BE0		11
+ * STATS_BHIST0		12
+ * STATS_TINTLESS_BG	13
+ * STATS_AWB_BG		14
+ * STATS_AWB_BFW	15
+ * STATS_BAF		16
+ * STATS_BHIST		17
+ * STATS_RS		18
+ * STATS_IHIST		19
+ * SPARSE_PD		20
+ * PDAF_V2.0_PD_DATA	21
+ * PDAF_V2.0_SAD	22
+ * LCR			23
+ * RDI0			24
+ * RDI1			25
+ * RDI2			26
+ * LTM_STATS		27
+ *
+ * IFE Lite write master IDs
+ *
+ * RDI0			0
+ * RDI1			1
+ * RDI2			2
+ * RDI3			3
+ * GAMMA		4
+ * BE			5
+ */
+
+/* TODO: assign an ENUM in resources and use the provided master
+ *       id directly for RDI, STATS, AWB_BG, BHIST.
+ *       This macro only works because RDI is all we support right now.
+ */
+#define RDI_WM(n)			((vfe_is_lite(vfe) ? 0 : 24) + (n))
+
+static void vfe_global_reset(struct vfe_device *vfe)
+{
+	/* VFE680 has no global reset, simply report a completion */
+	complete(&vfe->reset_complete);
+}
+
+/*
+ * vfe_isr - VFE module interrupt handler
+ * @irq: Interrupt line
+ * @dev: VFE device
+ *
+ * Return IRQ_HANDLED on success
+ */
+static irqreturn_t vfe_isr(int irq, void *dev)
+{
+	return IRQ_HANDLED;
+}
+
+/*
+ * vfe_halt - Trigger halt on VFE module and wait to complete
+ * @vfe: VFE device
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+static int vfe_halt(struct vfe_device *vfe)
+{
+	/* rely on vfe_disable_output() to stop the VFE */
+	return 0;
+}
+
+static void vfe_disable_irq(struct vfe_device *vfe)
+{
+	writel(0u, vfe->base + VFE_TOP_IRQn_MASK(vfe, 0));
+	writel(0u, vfe->base + VFE_TOP_IRQn_MASK(vfe, 1));
+	writel(0u, vfe->base + VFE_BUS_IRQn_MASK(vfe, 0));
+	writel(0u, vfe->base + VFE_BUS_IRQn_MASK(vfe, 1));
+}
+
+static void vfe_wm_update(struct vfe_device *vfe, u8 rdi, u32 addr,
+			  struct vfe_line *line)
+{
+	u8 wm = RDI_WM(rdi);
+
+	writel(addr, vfe->base + VFE_BUS_IMAGE_ADDR(vfe, wm));
+}
+
+static void vfe_wm_start(struct vfe_device *vfe, u8 rdi, struct vfe_line *line)
+{
+	struct v4l2_pix_format_mplane *pix =
+		&line->video_out.active_fmt.fmt.pix_mp;
+	u32 stride = pix->plane_fmt[0].bytesperline;
+	u32 cfg;
+	u8 wm;
+
+	cfg = VFE_BUS_IMAGE_CFG0_DATA(pix->height, stride);
+	wm = RDI_WM(rdi);
+
+	writel(cfg, vfe->base + VFE_BUS_IMAGE_CFG0(vfe, wm));
+	writel(0, vfe->base + VFE_BUS_IMAGE_CFG1(vfe, wm));
+	writel(stride, vfe->base + VFE_BUS_IMAGE_CFG2(vfe, wm));
+	writel(0, vfe->base + VFE_BUS_PACKER_CFG(vfe, wm));
+
+	/* Set total frame increment value */
+	writel(pix->plane_fmt[0].bytesperline * pix->height,
+	       vfe->base + VFE_BUS_FRAME_INCR(vfe, wm));
+
+	/* MMU */
+	writel(VFE_BUS_MMU_PREFETCH_CFG_EN, vfe->base + VFE_BUS_MMU_PREFETCH_CFG(vfe, wm));
+	writel(~0u, vfe->base + VFE_BUS_MMU_PREFETCH_MAX_OFFSET(vfe, wm));
+
+	/* no dropped frames, one irq per frame */
+	writel(1, vfe->base + VFE_BUS_FRAMEDROP_PATTERN(vfe, wm));
+	writel(0, vfe->base + VFE_BUS_FRAMEDROP_PERIOD(vfe, wm));
+	writel(1, vfe->base + VFE_BUS_IRQ_SUBSAMPLE_PATTERN(vfe, wm));
+	writel(0, vfe->base + VFE_BUS_IRQ_SUBSAMPLE_PERIOD(vfe, wm));
+
+	/* We don't process IRQs for VFE in RDI mode at the moment */
+	vfe_disable_irq(vfe);
+
+	/* Enable WM */
+	writel(VFE_BUS_WRITE_CLIENT_CFG_EN,
+	       vfe->base + VFE_BUS_WRITE_CLIENT_CFG(vfe, wm));
+
+	dev_dbg(vfe->camss->dev, "RDI%d WM:%d width %d height %d stride %d\n",
+		rdi, wm, pix->width, pix->height, stride);
+}
+
+static void vfe_wm_stop(struct vfe_device *vfe, u8 rdi)
+{
+	u8 wm = RDI_WM(rdi);
+
+	writel(0, vfe->base + VFE_BUS_WRITE_CLIENT_CFG(vfe, wm));
+}
+
+static const struct camss_video_ops vfe_video_ops_680 = {
+	.queue_buffer = vfe_queue_buffer_v2,
+	.flush_buffers = vfe_flush_buffers,
+};
+
+static void vfe_subdev_init(struct device *dev, struct vfe_device *vfe)
+{
+	vfe->video_ops = vfe_video_ops_680;
+}
+
+static void vfe_reg_update(struct vfe_device *vfe, enum vfe_line_id line_id)
+{
+	int port_id = line_id;
+
+	camss_reg_update(vfe->camss, vfe->id, port_id, false);
+}
+
+static inline void vfe_reg_update_clear(struct vfe_device *vfe,
+					enum vfe_line_id line_id)
+{
+	int port_id = line_id;
+
+	camss_reg_update(vfe->camss, vfe->id, port_id, true);
+}
+
+const struct vfe_hw_ops vfe_ops_680 = {
+	.global_reset = vfe_global_reset,
+	.hw_version = vfe_hw_version,
+	.isr = vfe_isr,
+	.pm_domain_off = vfe_pm_domain_off,
+	.pm_domain_on = vfe_pm_domain_on,
+	.subdev_init = vfe_subdev_init,
+	.vfe_disable = vfe_disable,
+	.vfe_enable = vfe_enable_v2,
+	.vfe_halt = vfe_halt,
+	.vfe_wm_start = vfe_wm_start,
+	.vfe_wm_stop = vfe_wm_stop,
+	.vfe_buf_done = vfe_buf_done,
+	.vfe_wm_update = vfe_wm_update,
+	.reg_update = vfe_reg_update,
+	.reg_update_clear = vfe_reg_update_clear,
+};

linux-7.2.3/drivers/media/platform/qcom/camss/camss-vfe-gen1.c

@@ -0,0 +1,743 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * camss-vfe-gen1.c
+ *
+ * Qualcomm MSM Camera Subsystem - VFE Common functionality for Gen 1 versions of hw (4.1, 4.7..)
+ *
+ * Copyright (C) 2020 Linaro Ltd.
+ */
+
+#include "camss.h"
+#include "camss-vfe.h"
+#include "camss-vfe-gen1.h"
+
+/* Max number of frame drop updates per frame */
+#define VFE_FRAME_DROP_UPDATES 2
+#define VFE_NEXT_SOF_MS 500
+
+int vfe_gen1_halt(struct vfe_device *vfe)
+{
+	unsigned long time;
+
+	reinit_completion(&vfe->halt_complete);
+
+	vfe->ops_gen1->halt_request(vfe);
+
+	time = wait_for_completion_timeout(&vfe->halt_complete,
+					   msecs_to_jiffies(VFE_HALT_TIMEOUT_MS));
+	if (!time) {
+		dev_err(vfe->camss->dev, "VFE halt timeout\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static int vfe_disable_output(struct vfe_line *line)
+{
+	struct vfe_device *vfe = to_vfe(line);
+	struct vfe_output *output = &line->output;
+	const struct vfe_hw_ops *ops = vfe->res->hw_ops;
+	unsigned long flags;
+	unsigned long time;
+	unsigned int i;
+
+	spin_lock_irqsave(&vfe->output_lock, flags);
+
+	output->gen1.wait_sof = 1;
+	spin_unlock_irqrestore(&vfe->output_lock, flags);
+
+	time = wait_for_completion_timeout(&output->sof, msecs_to_jiffies(VFE_NEXT_SOF_MS));
+	if (!time)
+		dev_err(vfe->camss->dev, "VFE sof timeout\n");
+
+	spin_lock_irqsave(&vfe->output_lock, flags);
+	for (i = 0; i < output->wm_num; i++)
+		vfe->ops_gen1->wm_enable(vfe, output->wm_idx[i], 0);
+
+	ops->reg_update(vfe, line->id);
+	output->wait_reg_update = 1;
+	spin_unlock_irqrestore(&vfe->output_lock, flags);
+
+	time = wait_for_completion_timeout(&output->reg_update, msecs_to_jiffies(VFE_NEXT_SOF_MS));
+	if (!time)
+		dev_err(vfe->camss->dev, "VFE reg update timeout\n");
+
+	spin_lock_irqsave(&vfe->output_lock, flags);
+
+	if (line->id != VFE_LINE_PIX) {
+		vfe->ops_gen1->wm_frame_based(vfe, output->wm_idx[0], 0);
+		vfe->ops_gen1->bus_disconnect_wm_from_rdi(vfe, output->wm_idx[0], line->id);
+		vfe->ops_gen1->enable_irq_wm_line(vfe, output->wm_idx[0], line->id, 0);
+		vfe->ops_gen1->set_cgc_override(vfe, output->wm_idx[0], 0);
+		spin_unlock_irqrestore(&vfe->output_lock, flags);
+	} else {
+		for (i = 0; i < output->wm_num; i++) {
+			vfe->ops_gen1->wm_line_based(vfe, output->wm_idx[i], NULL, i, 0);
+			vfe->ops_gen1->set_cgc_override(vfe, output->wm_idx[i], 0);
+		}
+
+		vfe->ops_gen1->enable_irq_pix_line(vfe, 0, line->id, 0);
+		vfe->ops_gen1->set_module_cfg(vfe, 0);
+		vfe->ops_gen1->set_realign_cfg(vfe, line, 0);
+		vfe->ops_gen1->set_xbar_cfg(vfe, output, 0);
+		vfe->ops_gen1->set_camif_cmd(vfe, 0);
+
+		spin_unlock_irqrestore(&vfe->output_lock, flags);
+
+		vfe->ops_gen1->camif_wait_for_stop(vfe, vfe->camss->dev);
+	}
+
+	return 0;
+}
+
+/*
+ * vfe_gen1_disable - Disable streaming on VFE line
+ * @line: VFE line
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+int vfe_gen1_disable(struct vfe_line *line)
+{
+	struct vfe_device *vfe = to_vfe(line);
+
+	vfe_disable_output(line);
+
+	vfe_put_output(line);
+
+	mutex_lock(&vfe->stream_lock);
+
+	if (vfe->stream_count == 1)
+		vfe->ops_gen1->bus_enable_wr_if(vfe, 0);
+
+	vfe->stream_count--;
+
+	mutex_unlock(&vfe->stream_lock);
+
+	return 0;
+}
+
+static void vfe_output_init_addrs(struct vfe_device *vfe,
+				  struct vfe_output *output, u8 sync,
+				  struct vfe_line *line)
+{
+	u32 ping_addr;
+	u32 pong_addr;
+	unsigned int i;
+
+	output->gen1.active_buf = 0;
+
+	for (i = 0; i < output->wm_num; i++) {
+		if (output->buf[0])
+			ping_addr = output->buf[0]->addr[i];
+		else
+			ping_addr = 0;
+
+		if (output->buf[1])
+			pong_addr = output->buf[1]->addr[i];
+		else
+			pong_addr = ping_addr;
+
+		vfe->ops_gen1->wm_set_ping_addr(vfe, output->wm_idx[i], ping_addr);
+		vfe->ops_gen1->wm_set_pong_addr(vfe, output->wm_idx[i], pong_addr);
+		if (sync)
+			vfe->ops_gen1->bus_reload_wm(vfe, output->wm_idx[i]);
+	}
+}
+
+static void vfe_output_frame_drop(struct vfe_device *vfe,
+				  struct vfe_output *output,
+				  u32 drop_pattern)
+{
+	u8 drop_period;
+	unsigned int i;
+
+	/* We need to toggle update period to be valid on next frame */
+	output->drop_update_idx++;
+	output->drop_update_idx %= VFE_FRAME_DROP_UPDATES;
+	drop_period = VFE_FRAME_DROP_VAL + output->drop_update_idx;
+
+	for (i = 0; i < output->wm_num; i++) {
+		vfe->ops_gen1->wm_set_framedrop_period(vfe, output->wm_idx[i], drop_period);
+		vfe->ops_gen1->wm_set_framedrop_pattern(vfe, output->wm_idx[i], drop_pattern);
+	}
+
+	vfe->res->hw_ops->reg_update(vfe, container_of(output, struct vfe_line, output)->id);
+}
+
+static int vfe_enable_output(struct vfe_line *line)
+{
+	struct vfe_device *vfe = to_vfe(line);
+	struct vfe_output *output = &line->output;
+	const struct vfe_hw_ops *ops = vfe->res->hw_ops;
+	struct media_pad *sensor_pad;
+	unsigned long flags;
+	unsigned int frame_skip = 0;
+	unsigned int i;
+	u16 ub_size;
+
+	ub_size = vfe->ops_gen1->get_ub_size(vfe->id);
+	if (!ub_size)
+		return -EINVAL;
+
+	sensor_pad = camss_find_sensor_pad(&line->subdev.entity);
+	if (sensor_pad) {
+		struct v4l2_subdev *subdev =
+			media_entity_to_v4l2_subdev(sensor_pad->entity);
+
+		v4l2_subdev_call(subdev, sensor, g_skip_frames, &frame_skip);
+		/* Max frame skip is 29 frames */
+		if (frame_skip > VFE_FRAME_DROP_VAL - 1)
+			frame_skip = VFE_FRAME_DROP_VAL - 1;
+	}
+
+	spin_lock_irqsave(&vfe->output_lock, flags);
+
+	ops->reg_update_clear(vfe, line->id);
+
+	if (output->state > VFE_OUTPUT_RESERVED) {
+		dev_err(vfe->camss->dev, "Output is not in reserved state %d\n", output->state);
+		spin_unlock_irqrestore(&vfe->output_lock, flags);
+		return -EINVAL;
+	}
+	output->state = VFE_OUTPUT_IDLE;
+
+	output->buf[0] = vfe_buf_get_pending(output);
+	output->buf[1] = vfe_buf_get_pending(output);
+
+	if (!output->buf[0] && output->buf[1]) {
+		output->buf[0] = output->buf[1];
+		output->buf[1] = NULL;
+	}
+
+	if (output->buf[0])
+		output->state = VFE_OUTPUT_SINGLE;
+
+	if (output->buf[1])
+		output->state = VFE_OUTPUT_CONTINUOUS;
+
+	switch (output->state) {
+	case VFE_OUTPUT_SINGLE:
+		vfe_output_frame_drop(vfe, output, 1 << frame_skip);
+		break;
+	case VFE_OUTPUT_CONTINUOUS:
+		vfe_output_frame_drop(vfe, output, 3 << frame_skip);
+		break;
+	default:
+		vfe_output_frame_drop(vfe, output, 0);
+		break;
+	}
+
+	output->sequence = 0;
+	output->gen1.wait_sof = 0;
+	output->wait_reg_update = 0;
+	reinit_completion(&output->sof);
+	reinit_completion(&output->reg_update);
+
+	vfe_output_init_addrs(vfe, output, 0, line);
+
+	if (line->id != VFE_LINE_PIX) {
+		vfe->ops_gen1->set_cgc_override(vfe, output->wm_idx[0], 1);
+		vfe->ops_gen1->enable_irq_wm_line(vfe, output->wm_idx[0], line->id, 1);
+		vfe->ops_gen1->bus_connect_wm_to_rdi(vfe, output->wm_idx[0], line->id);
+		vfe->ops_gen1->wm_set_subsample(vfe, output->wm_idx[0]);
+		vfe->ops_gen1->set_rdi_cid(vfe, line->id, 0);
+		vfe->ops_gen1->wm_set_ub_cfg(vfe, output->wm_idx[0],
+					    (ub_size + 1) * output->wm_idx[0], ub_size);
+		vfe->ops_gen1->wm_frame_based(vfe, output->wm_idx[0], 1);
+		vfe->ops_gen1->wm_enable(vfe, output->wm_idx[0], 1);
+		vfe->ops_gen1->bus_reload_wm(vfe, output->wm_idx[0]);
+	} else {
+		ub_size /= output->wm_num;
+		for (i = 0; i < output->wm_num; i++) {
+			vfe->ops_gen1->set_cgc_override(vfe, output->wm_idx[i], 1);
+			vfe->ops_gen1->wm_set_subsample(vfe, output->wm_idx[i]);
+			vfe->ops_gen1->wm_set_ub_cfg(vfe, output->wm_idx[i],
+						     (ub_size + 1) * output->wm_idx[i], ub_size);
+			vfe->ops_gen1->wm_line_based(vfe, output->wm_idx[i],
+						     &line->video_out.active_fmt.fmt.pix_mp, i, 1);
+			vfe->ops_gen1->wm_enable(vfe, output->wm_idx[i], 1);
+			vfe->ops_gen1->bus_reload_wm(vfe, output->wm_idx[i]);
+		}
+		vfe->ops_gen1->enable_irq_pix_line(vfe, 0, line->id, 1);
+		vfe->ops_gen1->set_module_cfg(vfe, 1);
+		vfe->ops_gen1->set_camif_cfg(vfe, line);
+		vfe->ops_gen1->set_realign_cfg(vfe, line, 1);
+		vfe->ops_gen1->set_xbar_cfg(vfe, output, 1);
+		vfe->ops_gen1->set_demux_cfg(vfe, line);
+		vfe->ops_gen1->set_scale_cfg(vfe, line);
+		vfe->ops_gen1->set_crop_cfg(vfe, line);
+		vfe->ops_gen1->set_clamp_cfg(vfe);
+		vfe->ops_gen1->set_camif_cmd(vfe, 1);
+	}
+
+	ops->reg_update(vfe, line->id);
+
+	spin_unlock_irqrestore(&vfe->output_lock, flags);
+
+	return 0;
+}
+
+static int vfe_get_output(struct vfe_line *line)
+{
+	struct vfe_device *vfe = to_vfe(line);
+	struct vfe_output *output;
+	struct v4l2_format *f = &line->video_out.active_fmt;
+	unsigned long flags;
+	int i;
+	int wm_idx;
+
+	spin_lock_irqsave(&vfe->output_lock, flags);
+
+	output = &line->output;
+	if (output->state > VFE_OUTPUT_RESERVED) {
+		dev_err(vfe->camss->dev, "Output is running\n");
+		goto error;
+	}
+	output->state = VFE_OUTPUT_RESERVED;
+
+	output->gen1.active_buf = 0;
+
+	switch (f->fmt.pix_mp.pixelformat) {
+	case V4L2_PIX_FMT_NV12:
+	case V4L2_PIX_FMT_NV21:
+	case V4L2_PIX_FMT_NV16:
+	case V4L2_PIX_FMT_NV61:
+		output->wm_num = 2;
+		break;
+	default:
+		output->wm_num = 1;
+		break;
+	}
+
+	for (i = 0; i < output->wm_num; i++) {
+		wm_idx = vfe_reserve_wm(vfe, line->id);
+		if (wm_idx < 0) {
+			dev_err(vfe->camss->dev, "Can not reserve wm\n");
+			goto error_get_wm;
+		}
+		output->wm_idx[i] = wm_idx;
+	}
+
+	output->drop_update_idx = 0;
+
+	spin_unlock_irqrestore(&vfe->output_lock, flags);
+
+	return 0;
+
+error_get_wm:
+	for (i--; i >= 0; i--)
+		vfe_release_wm(vfe, output->wm_idx[i]);
+	output->state = VFE_OUTPUT_OFF;
+error:
+	spin_unlock_irqrestore(&vfe->output_lock, flags);
+
+	return -EINVAL;
+}
+
+int vfe_gen1_enable(struct vfe_line *line)
+{
+	struct vfe_device *vfe = to_vfe(line);
+	int ret;
+
+	mutex_lock(&vfe->stream_lock);
+
+	if (!vfe->stream_count) {
+		vfe->ops_gen1->enable_irq_common(vfe);
+		vfe->ops_gen1->bus_enable_wr_if(vfe, 1);
+		vfe->ops_gen1->set_qos(vfe);
+		vfe->ops_gen1->set_ds(vfe);
+	}
+
+	vfe->stream_count++;
+
+	mutex_unlock(&vfe->stream_lock);
+
+	ret = vfe_get_output(line);
+	if (ret < 0)
+		goto error_get_output;
+
+	ret = vfe_enable_output(line);
+	if (ret < 0)
+		goto error_enable_output;
+
+	vfe->was_streaming = 1;
+
+	return 0;
+
+error_enable_output:
+	vfe_put_output(line);
+
+error_get_output:
+	mutex_lock(&vfe->stream_lock);
+
+	if (vfe->stream_count == 1)
+		vfe->ops_gen1->bus_enable_wr_if(vfe, 0);
+
+	vfe->stream_count--;
+
+	mutex_unlock(&vfe->stream_lock);
+
+	return ret;
+}
+
+static void vfe_output_update_ping_addr(struct vfe_device *vfe,
+					struct vfe_output *output, u8 sync,
+					struct vfe_line *line)
+{
+	u32 addr;
+	unsigned int i;
+
+	for (i = 0; i < output->wm_num; i++) {
+		if (output->buf[0])
+			addr = output->buf[0]->addr[i];
+		else
+			addr = 0;
+
+		vfe->ops_gen1->wm_set_ping_addr(vfe, output->wm_idx[i], addr);
+		if (sync)
+			vfe->ops_gen1->bus_reload_wm(vfe, output->wm_idx[i]);
+	}
+}
+
+static void vfe_output_update_pong_addr(struct vfe_device *vfe,
+					struct vfe_output *output, u8 sync,
+					struct vfe_line *line)
+{
+	u32 addr;
+	unsigned int i;
+
+	for (i = 0; i < output->wm_num; i++) {
+		if (output->buf[1])
+			addr = output->buf[1]->addr[i];
+		else
+			addr = 0;
+
+		vfe->ops_gen1->wm_set_pong_addr(vfe, output->wm_idx[i], addr);
+		if (sync)
+			vfe->ops_gen1->bus_reload_wm(vfe, output->wm_idx[i]);
+	}
+}
+
+static void vfe_buf_update_wm_on_next(struct vfe_device *vfe,
+				      struct vfe_output *output)
+{
+	switch (output->state) {
+	case VFE_OUTPUT_CONTINUOUS:
+		vfe_output_frame_drop(vfe, output, 3);
+		break;
+	case VFE_OUTPUT_SINGLE:
+	default:
+		dev_err_ratelimited(vfe->camss->dev,
+				    "Next buf in wrong state! %d\n",
+				    output->state);
+		break;
+	}
+}
+
+static void vfe_buf_update_wm_on_last(struct vfe_device *vfe,
+				      struct vfe_output *output)
+{
+	switch (output->state) {
+	case VFE_OUTPUT_CONTINUOUS:
+		output->state = VFE_OUTPUT_SINGLE;
+		vfe_output_frame_drop(vfe, output, 1);
+		break;
+	case VFE_OUTPUT_SINGLE:
+		output->state = VFE_OUTPUT_STOPPING;
+		vfe_output_frame_drop(vfe, output, 0);
+		break;
+	default:
+		dev_err_ratelimited(vfe->camss->dev,
+				    "Last buff in wrong state! %d\n",
+				    output->state);
+		break;
+	}
+}
+
+static void vfe_buf_update_wm_on_new(struct vfe_device *vfe,
+				     struct vfe_output *output,
+				     struct camss_buffer *new_buf,
+				     struct vfe_line *line)
+{
+	int inactive_idx;
+
+	switch (output->state) {
+	case VFE_OUTPUT_SINGLE:
+		inactive_idx = !output->gen1.active_buf;
+
+		if (!output->buf[inactive_idx]) {
+			output->buf[inactive_idx] = new_buf;
+
+			if (inactive_idx)
+				vfe_output_update_pong_addr(vfe, output, 0, line);
+			else
+				vfe_output_update_ping_addr(vfe, output, 0, line);
+
+			vfe_output_frame_drop(vfe, output, 3);
+			output->state = VFE_OUTPUT_CONTINUOUS;
+		} else {
+			vfe_buf_add_pending(output, new_buf);
+			dev_err_ratelimited(vfe->camss->dev,
+					    "Inactive buffer is busy\n");
+		}
+		break;
+
+	case VFE_OUTPUT_IDLE:
+		if (!output->buf[0]) {
+			output->buf[0] = new_buf;
+
+			vfe_output_init_addrs(vfe, output, 1, line);
+			vfe_output_frame_drop(vfe, output, 1);
+
+			output->state = VFE_OUTPUT_SINGLE;
+		} else {
+			vfe_buf_add_pending(output, new_buf);
+			dev_err_ratelimited(vfe->camss->dev,
+					    "Output idle with buffer set!\n");
+		}
+		break;
+
+	case VFE_OUTPUT_CONTINUOUS:
+	default:
+		vfe_buf_add_pending(output, new_buf);
+		break;
+	}
+}
+
+/*
+ * vfe_isr_halt_ack - Process halt ack
+ * @vfe: VFE Device
+ */
+static void vfe_isr_halt_ack(struct vfe_device *vfe)
+{
+	complete(&vfe->halt_complete);
+	vfe->ops_gen1->halt_clear(vfe);
+}
+
+/*
+ * vfe_isr_sof - Process start of frame interrupt
+ * @vfe: VFE Device
+ * @line_id: VFE line
+ */
+static void vfe_isr_sof(struct vfe_device *vfe, enum vfe_line_id line_id)
+{
+	struct vfe_output *output;
+	unsigned long flags;
+
+	spin_lock_irqsave(&vfe->output_lock, flags);
+	output = &vfe->line[line_id].output;
+	if (output->gen1.wait_sof) {
+		output->gen1.wait_sof = 0;
+		complete(&output->sof);
+	}
+	spin_unlock_irqrestore(&vfe->output_lock, flags);
+}
+
+/*
+ * vfe_isr_reg_update - Process reg update interrupt
+ * @vfe: VFE Device
+ * @line_id: VFE line
+ */
+static void vfe_isr_reg_update(struct vfe_device *vfe, enum vfe_line_id line_id)
+{
+	struct vfe_output *output;
+	struct vfe_line *line = &vfe->line[line_id];
+	unsigned long flags;
+
+	spin_lock_irqsave(&vfe->output_lock, flags);
+	vfe->res->hw_ops->reg_update_clear(vfe, line_id);
+
+	output = &line->output;
+
+	if (output->wait_reg_update) {
+		output->wait_reg_update = 0;
+		complete(&output->reg_update);
+		spin_unlock_irqrestore(&vfe->output_lock, flags);
+		return;
+	}
+
+	if (output->state == VFE_OUTPUT_STOPPING) {
+		/* Release last buffer when hw is idle */
+		if (output->last_buffer) {
+			vb2_buffer_done(&output->last_buffer->vb.vb2_buf,
+					VB2_BUF_STATE_DONE);
+			output->last_buffer = NULL;
+		}
+		output->state = VFE_OUTPUT_IDLE;
+
+		/* Buffers received in stopping state are queued in */
+		/* dma pending queue, start next capture here */
+
+		output->buf[0] = vfe_buf_get_pending(output);
+		output->buf[1] = vfe_buf_get_pending(output);
+
+		if (!output->buf[0] && output->buf[1]) {
+			output->buf[0] = output->buf[1];
+			output->buf[1] = NULL;
+		}
+
+		if (output->buf[0])
+			output->state = VFE_OUTPUT_SINGLE;
+
+		if (output->buf[1])
+			output->state = VFE_OUTPUT_CONTINUOUS;
+
+		switch (output->state) {
+		case VFE_OUTPUT_SINGLE:
+			vfe_output_frame_drop(vfe, output, 2);
+			break;
+		case VFE_OUTPUT_CONTINUOUS:
+			vfe_output_frame_drop(vfe, output, 3);
+			break;
+		default:
+			vfe_output_frame_drop(vfe, output, 0);
+			break;
+		}
+
+		vfe_output_init_addrs(vfe, output, 1, &vfe->line[line_id]);
+	}
+
+	spin_unlock_irqrestore(&vfe->output_lock, flags);
+}
+
+/*
+ * vfe_isr_wm_done - Process write master done interrupt
+ * @vfe: VFE Device
+ * @wm: Write master id
+ */
+static void vfe_isr_wm_done(struct vfe_device *vfe, u8 wm)
+{
+	struct camss_buffer *ready_buf;
+	struct vfe_output *output;
+	dma_addr_t *new_addr;
+	unsigned long flags;
+	u32 active_index;
+	u64 ts = ktime_get_ns();
+	unsigned int i;
+
+	active_index = vfe->ops_gen1->wm_get_ping_pong_status(vfe, wm);
+
+	spin_lock_irqsave(&vfe->output_lock, flags);
+
+	if (vfe->wm_output_map[wm] == VFE_LINE_NONE) {
+		dev_err_ratelimited(vfe->camss->dev,
+				    "Received wm done for unmapped index\n");
+		goto out_unlock;
+	}
+	output = &vfe->line[vfe->wm_output_map[wm]].output;
+
+	if (output->gen1.active_buf == active_index && 0) {
+		dev_err_ratelimited(vfe->camss->dev,
+				    "Active buffer mismatch!\n");
+		goto out_unlock;
+	}
+	output->gen1.active_buf = active_index;
+
+	ready_buf = output->buf[!active_index];
+	if (!ready_buf) {
+		dev_err_ratelimited(vfe->camss->dev,
+				    "Missing ready buf %d %d!\n",
+				    !active_index, output->state);
+		goto out_unlock;
+	}
+
+	ready_buf->vb.vb2_buf.timestamp = ts;
+	ready_buf->vb.sequence = output->sequence++;
+
+	/* Get next buffer */
+	output->buf[!active_index] = vfe_buf_get_pending(output);
+	if (!output->buf[!active_index]) {
+		/* No next buffer - set same address */
+		new_addr = ready_buf->addr;
+		vfe_buf_update_wm_on_last(vfe, output);
+	} else {
+		new_addr = output->buf[!active_index]->addr;
+		vfe_buf_update_wm_on_next(vfe, output);
+	}
+
+	if (active_index)
+		for (i = 0; i < output->wm_num; i++)
+			vfe->ops_gen1->wm_set_ping_addr(vfe, output->wm_idx[i], new_addr[i]);
+	else
+		for (i = 0; i < output->wm_num; i++)
+			vfe->ops_gen1->wm_set_pong_addr(vfe, output->wm_idx[i], new_addr[i]);
+
+	spin_unlock_irqrestore(&vfe->output_lock, flags);
+
+	if (output->state == VFE_OUTPUT_STOPPING)
+		output->last_buffer = ready_buf;
+	else
+		vb2_buffer_done(&ready_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
+
+	return;
+
+out_unlock:
+	spin_unlock_irqrestore(&vfe->output_lock, flags);
+}
+
+/*
+ * vfe_queue_buffer - Add empty buffer
+ * @vid: Video device structure
+ * @buf: Buffer to be enqueued
+ *
+ * Add an empty buffer - depending on the current number of buffers it will be
+ * put in pending buffer queue or directly given to the hardware to be filled.
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+static int vfe_queue_buffer(struct camss_video *vid, struct camss_buffer *buf)
+{
+	struct vfe_line *line = container_of(vid, struct vfe_line, video_out);
+	struct vfe_device *vfe = to_vfe(line);
+	struct vfe_output *output;
+	unsigned long flags;
+
+	output = &line->output;
+
+	spin_lock_irqsave(&vfe->output_lock, flags);
+
+	vfe_buf_update_wm_on_new(vfe, output, buf, line);
+
+	spin_unlock_irqrestore(&vfe->output_lock, flags);
+
+	return 0;
+}
+
+#define CALC_WORD(width, M, N) (((width) * (M) + (N) - 1) / (N))
+
+int vfe_word_per_line(u32 format, u32 width)
+{
+	int val = 0;
+
+	switch (format) {
+	case V4L2_PIX_FMT_NV12:
+	case V4L2_PIX_FMT_NV21:
+	case V4L2_PIX_FMT_NV16:
+	case V4L2_PIX_FMT_NV61:
+		val = CALC_WORD(width, 1, 8);
+		break;
+	case V4L2_PIX_FMT_YUYV:
+	case V4L2_PIX_FMT_YVYU:
+	case V4L2_PIX_FMT_UYVY:
+	case V4L2_PIX_FMT_VYUY:
+		val = CALC_WORD(width, 2, 8);
+		break;
+	}
+
+	return val;
+}
+
+const struct vfe_isr_ops vfe_isr_ops_gen1 = {
+	.reset_ack = vfe_isr_reset_ack,
+	.halt_ack = vfe_isr_halt_ack,
+	.reg_update = vfe_isr_reg_update,
+	.sof = vfe_isr_sof,
+	.comp_done = vfe_isr_comp_done,
+	.wm_done = vfe_isr_wm_done,
+};
+
+const struct camss_video_ops vfe_video_ops_gen1 = {
+	.queue_buffer = vfe_queue_buffer,
+	.flush_buffers = vfe_flush_buffers,
+};

linux-7.2.3/drivers/media/platform/qcom/camss/camss-vfe-gen1.h

@@ -0,0 +1,117 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * camss-vfe.h
+ *
+ * Qualcomm MSM Camera Subsystem - VFE (Video Front End) Module
+ *
+ * Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2015-2018 Linaro Ltd.
+ */
+#ifndef QC_MSM_CAMSS_VFE_GEN1_H
+#define QC_MSM_CAMSS_VFE_GEN1_H
+
+#include "camss-vfe.h"
+
+enum vfe_line_id;
+struct vfe_device;
+struct vfe_line;
+struct vfe_output;
+
+struct vfe_hw_ops_gen1 {
+	void (*bus_connect_wm_to_rdi)(struct vfe_device *vfe, u8 wm, enum vfe_line_id id);
+	void (*bus_disconnect_wm_from_rdi)(struct vfe_device *vfe, u8 wm, enum vfe_line_id id);
+	void (*bus_enable_wr_if)(struct vfe_device *vfe, u8 enable);
+	void (*bus_reload_wm)(struct vfe_device *vfe, u8 wm);
+	int (*camif_wait_for_stop)(struct vfe_device *vfe, struct device *dev);
+	void (*enable_irq_common)(struct vfe_device *vfe);
+	void (*enable_irq_wm_line)(struct vfe_device *vfe, u8 wm, enum vfe_line_id line_id,
+				   u8 enable);
+	void (*enable_irq_pix_line)(struct vfe_device *vfe, u8 comp, enum vfe_line_id line_id,
+				    u8 enable);
+	u16 (*get_ub_size)(u8 vfe_id);
+	void (*halt_clear)(struct vfe_device *vfe);
+	void (*halt_request)(struct vfe_device *vfe);
+	void (*set_camif_cfg)(struct vfe_device *vfe, struct vfe_line *line);
+	void (*set_camif_cmd)(struct vfe_device *vfe, u8 enable);
+	void (*set_cgc_override)(struct vfe_device *vfe, u8 wm, u8 enable);
+	void (*set_clamp_cfg)(struct vfe_device *vfe);
+	void (*set_crop_cfg)(struct vfe_device *vfe, struct vfe_line *line);
+	void (*set_demux_cfg)(struct vfe_device *vfe, struct vfe_line *line);
+	void (*set_ds)(struct vfe_device *vfe);
+	void (*set_module_cfg)(struct vfe_device *vfe, u8 enable);
+	void (*set_scale_cfg)(struct vfe_device *vfe, struct vfe_line *line);
+	void (*set_rdi_cid)(struct vfe_device *vfe, enum vfe_line_id id, u8 cid);
+	void (*set_realign_cfg)(struct vfe_device *vfe, struct vfe_line *line, u8 enable);
+	void (*set_qos)(struct vfe_device *vfe);
+	void (*set_xbar_cfg)(struct vfe_device *vfe, struct vfe_output *output, u8 enable);
+	void (*wm_frame_based)(struct vfe_device *vfe, u8 wm, u8 enable);
+	void (*wm_line_based)(struct vfe_device *vfe, u32 wm, struct v4l2_pix_format_mplane *pix,
+			      u8 plane, u32 enable);
+	void (*wm_set_ub_cfg)(struct vfe_device *vfe, u8 wm, u16 offset, u16 depth);
+	void (*wm_set_subsample)(struct vfe_device *vfe, u8 wm);
+	void (*wm_set_framedrop_period)(struct vfe_device *vfe, u8 wm, u8 per);
+	void (*wm_set_framedrop_pattern)(struct vfe_device *vfe, u8 wm, u32 pattern);
+	void (*wm_set_ping_addr)(struct vfe_device *vfe, u8 wm, u32 addr);
+	void (*wm_set_pong_addr)(struct vfe_device *vfe, u8 wm, u32 addr);
+	int (*wm_get_ping_pong_status)(struct vfe_device *vfe, u8 wm);
+	void (*wm_enable)(struct vfe_device *vfe, u8 wm, u8 enable);
+};
+
+/*
+ * vfe_calc_interp_reso - Calculate interpolation mode
+ * @input: Input resolution
+ * @output: Output resolution
+ *
+ * Return interpolation mode
+ */
+static inline u8 vfe_calc_interp_reso(u16 input, u16 output)
+{
+	if (input / output >= 16)
+		return 0;
+
+	if (input / output >= 8)
+		return 1;
+
+	if (input / output >= 4)
+		return 2;
+
+	return 3;
+}
+
+/*
+ * vfe_gen1_disable - Disable streaming on VFE line
+ * @line: VFE line
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+int vfe_gen1_disable(struct vfe_line *line);
+
+/*
+ * vfe_gen1_enable - Enable VFE module
+ * @line: VFE line
+ *
+ * Return 0 on success
+ */
+int vfe_gen1_enable(struct vfe_line *line);
+
+/*
+ * vfe_gen1_enable - Halt VFE module
+ * @vfe: VFE device
+ *
+ * Return 0 on success
+ */
+int vfe_gen1_halt(struct vfe_device *vfe);
+
+/*
+ * vfe_word_per_line - Calculate number of words per frame width
+ * @format: V4L2 format
+ * @width: Frame width
+ *
+ * Return number of words per frame width
+ */
+int vfe_word_per_line(u32 format, u32 width);
+
+extern const struct vfe_isr_ops vfe_isr_ops_gen1;
+extern const struct camss_video_ops vfe_video_ops_gen1;
+
+#endif /* QC_MSM_CAMSS_VFE_GEN1_H */

linux-7.2.3/drivers/media/platform/qcom/camss/camss-vfe-gen3.c

@@ -0,0 +1,193 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Qualcomm MSM Camera Subsystem - VFE (Video Front End) Module gen3
+ *
+ * Copyright (c) 2024 Qualcomm Technologies, Inc.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+
+#include "camss.h"
+#include "camss-vfe.h"
+
+#define IS_VFE_690(vfe) \
+	    ((vfe->camss->res->version == CAMSS_8775P) \
+	    || (vfe->camss->res->version == CAMSS_8300))
+
+#define BUS_REG_BASE_690 \
+	    (vfe_is_lite(vfe) ? 0x480 : 0x400)
+#define BUS_REG_BASE_780 \
+	    (vfe_is_lite(vfe) ? 0x200 : 0xC00)
+#define BUS_REG_BASE \
+	    (IS_VFE_690(vfe) ? BUS_REG_BASE_690 : BUS_REG_BASE_780)
+
+#define VFE_TOP_CORE_CFG (0x24)
+#define VFE_DISABLE_DSCALING_DS4  BIT(21)
+#define VFE_DISABLE_DSCALING_DS16 BIT(22)
+
+#define VFE_BUS_WM_TEST_BUS_CTRL_690 (BUS_REG_BASE + 0xFC)
+#define VFE_BUS_WM_TEST_BUS_CTRL_780 (BUS_REG_BASE + 0xDC)
+#define VFE_BUS_WM_TEST_BUS_CTRL \
+	    (IS_VFE_690(vfe) ? VFE_BUS_WM_TEST_BUS_CTRL_690 \
+	     : VFE_BUS_WM_TEST_BUS_CTRL_780)
+/*
+ * Bus client mapping:
+ *
+ * Full VFE:
+ * VFE_690: 16 = RDI0, 17 = RDI1, 18 = RDI2
+ * VFE_780: 23 = RDI0, 24 = RDI1, 25 = RDI2
+ *
+ * VFE LITE:
+ * VFE_690 : 0 = RDI0, 1 = RDI1, 2 = RDI2, 3 = RDI3, 4 = RDI4, 5 = RDI5
+ * VFE_780 : 0 = RDI0, 1 = RDI1, 2 = RDI2, 3 = RDI3, 4 = RDI4
+ */
+#define RDI_WM_690(n)	((vfe_is_lite(vfe) ? 0x0 : 0x10) + (n))
+#define RDI_WM_780(n)	((vfe_is_lite(vfe) ? 0x0 : 0x17) + (n))
+#define RDI_WM(n)	(IS_VFE_690(vfe) ? RDI_WM_690(n) : RDI_WM_780(n))
+
+#define VFE_BUS_WM_CGC_OVERRIDE		(BUS_REG_BASE + 0x08)
+#define		WM_CGC_OVERRIDE_ALL		(0x7FFFFFF)
+
+#define VFE_BUS_WM_CFG(n)		(BUS_REG_BASE + 0x200 + (n) * 0x100)
+#define		WM_CFG_EN			BIT(0)
+#define		WM_VIR_FRM_EN			BIT(1)
+#define		WM_CFG_MODE			BIT(16)
+#define VFE_BUS_WM_IMAGE_ADDR(n)	(BUS_REG_BASE + 0x204 + (n) * 0x100)
+#define VFE_BUS_WM_FRAME_INCR(n)	(BUS_REG_BASE + 0x208 + (n) * 0x100)
+#define VFE_BUS_WM_IMAGE_CFG_0(n)	(BUS_REG_BASE + 0x20c + (n) * 0x100)
+#define		WM_IMAGE_CFG_0_DEFAULT_WIDTH	(0xFFFF)
+#define VFE_BUS_WM_IMAGE_CFG_2(n)	(BUS_REG_BASE + 0x214 + (n) * 0x100)
+#define		WM_IMAGE_CFG_2_DEFAULT_STRIDE	(0xFFFF)
+#define VFE_BUS_WM_PACKER_CFG(n)	(BUS_REG_BASE + 0x218 + (n) * 0x100)
+
+#define VFE_BUS_WM_IRQ_SUBSAMPLE_PERIOD(n)	(BUS_REG_BASE + 0x230 + (n) * 0x100)
+#define VFE_BUS_WM_IRQ_SUBSAMPLE_PATTERN(n)	(BUS_REG_BASE + 0x234 + (n) * 0x100)
+#define VFE_BUS_WM_FRAMEDROP_PERIOD(n)		(BUS_REG_BASE + 0x238 + (n) * 0x100)
+#define VFE_BUS_WM_FRAMEDROP_PATTERN(n)		(BUS_REG_BASE + 0x23c + (n) * 0x100)
+
+#define VFE_BUS_WM_MMU_PREFETCH_CFG(n)		(BUS_REG_BASE + 0x260 + (n) * 0x100)
+#define VFE_BUS_WM_MMU_PREFETCH_MAX_OFFSET(n)	(BUS_REG_BASE + 0x264 + (n) * 0x100)
+
+static void vfe_wm_start(struct vfe_device *vfe, u8 wm, struct vfe_line *line)
+{
+	struct v4l2_pix_format_mplane *pix =
+		&line->video_out.active_fmt.fmt.pix_mp;
+
+	wm = RDI_WM(wm);
+
+	/* no clock gating at bus input */
+	writel(WM_CGC_OVERRIDE_ALL, vfe->base + VFE_BUS_WM_CGC_OVERRIDE);
+
+	writel(0x0, vfe->base + VFE_BUS_WM_TEST_BUS_CTRL);
+
+	if (IS_VFE_690(vfe))
+		writel(ALIGN(pix->plane_fmt[0].bytesperline, 16) * pix->height,
+		       vfe->base + VFE_BUS_WM_FRAME_INCR(wm));
+	else
+		writel(ALIGN(pix->plane_fmt[0].bytesperline, 16) * pix->height >> 8,
+		       vfe->base + VFE_BUS_WM_FRAME_INCR(wm));
+
+	writel((WM_IMAGE_CFG_0_DEFAULT_WIDTH & 0xFFFF),
+	       vfe->base + VFE_BUS_WM_IMAGE_CFG_0(wm));
+	writel(WM_IMAGE_CFG_2_DEFAULT_STRIDE,
+	       vfe->base + VFE_BUS_WM_IMAGE_CFG_2(wm));
+	writel(0, vfe->base + VFE_BUS_WM_PACKER_CFG(wm));
+
+	/* TOP CORE CFG */
+	if (IS_VFE_690(vfe))
+		writel(VFE_DISABLE_DSCALING_DS4 | VFE_DISABLE_DSCALING_DS16,
+			vfe->base + VFE_TOP_CORE_CFG);
+
+	/* no dropped frames, one irq per frame */
+	writel(0, vfe->base + VFE_BUS_WM_FRAMEDROP_PERIOD(wm));
+	writel(1, vfe->base + VFE_BUS_WM_FRAMEDROP_PATTERN(wm));
+	writel(0, vfe->base + VFE_BUS_WM_IRQ_SUBSAMPLE_PERIOD(wm));
+	writel(1, vfe->base + VFE_BUS_WM_IRQ_SUBSAMPLE_PATTERN(wm));
+
+	writel(1, vfe->base + VFE_BUS_WM_MMU_PREFETCH_CFG(wm));
+	writel(0xFFFFFFFF, vfe->base + VFE_BUS_WM_MMU_PREFETCH_MAX_OFFSET(wm));
+
+	writel(WM_CFG_EN | WM_CFG_MODE, vfe->base + VFE_BUS_WM_CFG(wm));
+}
+
+static void vfe_wm_stop(struct vfe_device *vfe, u8 wm)
+{
+	wm = RDI_WM(wm);
+	writel(0, vfe->base + VFE_BUS_WM_CFG(wm));
+}
+
+static void vfe_wm_update(struct vfe_device *vfe, u8 wm, u32 addr,
+			  struct vfe_line *line)
+{
+	wm = RDI_WM(wm);
+
+	if (IS_VFE_690(vfe))
+		writel(addr, vfe->base + VFE_BUS_WM_IMAGE_ADDR(wm));
+	else
+		writel((addr >> 8), vfe->base + VFE_BUS_WM_IMAGE_ADDR(wm));
+
+	dev_dbg(vfe->camss->dev, "wm:%d, image buf addr:0x%x\n",
+		wm, addr);
+}
+
+static void vfe_reg_update(struct vfe_device *vfe, enum vfe_line_id line_id)
+{
+	int port_id = line_id;
+
+	camss_reg_update(vfe->camss, vfe->id, port_id, false);
+}
+
+static inline void vfe_reg_update_clear(struct vfe_device *vfe,
+					enum vfe_line_id line_id)
+{
+	int port_id = line_id;
+
+	camss_reg_update(vfe->camss, vfe->id, port_id, true);
+}
+
+static const struct camss_video_ops vfe_video_ops_gen3 = {
+	.queue_buffer = vfe_queue_buffer_v2,
+	.flush_buffers = vfe_flush_buffers,
+};
+
+static void vfe_subdev_init(struct device *dev, struct vfe_device *vfe)
+{
+	vfe->video_ops = vfe_video_ops_gen3;
+}
+
+static void vfe_global_reset(struct vfe_device *vfe)
+{
+	vfe_isr_reset_ack(vfe);
+}
+
+static irqreturn_t vfe_isr(int irq, void *dev)
+{
+	/* nop */
+	return IRQ_HANDLED;
+}
+
+static int vfe_halt(struct vfe_device *vfe)
+{
+	/* rely on vfe_disable_output() to stop the VFE */
+	return 0;
+}
+
+const struct vfe_hw_ops vfe_ops_gen3 = {
+	.global_reset = vfe_global_reset,
+	.hw_version = vfe_hw_version,
+	.isr = vfe_isr,
+	.pm_domain_off = vfe_pm_domain_off,
+	.pm_domain_on = vfe_pm_domain_on,
+	.reg_update = vfe_reg_update,
+	.reg_update_clear = vfe_reg_update_clear,
+	.subdev_init = vfe_subdev_init,
+	.vfe_disable = vfe_disable,
+	.vfe_enable = vfe_enable_v2,
+	.vfe_halt = vfe_halt,
+	.vfe_wm_start = vfe_wm_start,
+	.vfe_wm_stop = vfe_wm_stop,
+	.vfe_buf_done = vfe_buf_done,
+	.vfe_wm_update = vfe_wm_update,
+};

linux-7.2.3/drivers/media/platform/qcom/camss/camss-vfe-vbif.c

@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * camss-vfe-vbif.c
+ *
+ * Qualcomm MSM Camera Subsystem - VFE VBIF Module
+ *
+ * Copyright (c) 2025, The Linux Foundation. All rights reserved.
+ *
+ */
+
+#include <linux/io.h>
+
+#include "camss.h"
+#include "camss-vfe.h"
+#include "camss-vfe-vbif.h"
+
+#define VBIF_FIXED_SORT_EN	0x30
+#define VBIF_FIXED_SORT_SEL0	0x34
+
+void vfe_vbif_write_reg(struct vfe_device *vfe, u32 reg, u32 val)
+{
+	writel_relaxed(val, vfe->vbif_base + reg);
+}
+
+int vfe_vbif_apply_settings(struct vfe_device *vfe)
+{
+	vfe_vbif_write_reg(vfe, VBIF_FIXED_SORT_EN, 0xfff);
+	vfe_vbif_write_reg(vfe, VBIF_FIXED_SORT_SEL0, 0x555000);
+
+	return 0;
+}

linux-7.2.3/drivers/media/platform/qcom/camss/camss-vfe-vbif.h

@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * camss-vfe-vbif.h
+ *
+ * Qualcomm MSM Camera Subsystem - VFE VBIF Module
+ *
+ * Copyright (c) 2025, The Linux Foundation. All rights reserved.
+ *
+ */
+#ifndef QC_MSM_CAMSS_VFE_VBIF_H
+#define QC_MSM_CAMSS_VFE_VBIF_H
+
+#include "camss-vfe.h"
+
+void vfe_vbif_write_reg(struct vfe_device *vfe, u32 reg, u32 val);
+
+int vfe_vbif_apply_settings(struct vfe_device *vfe);
+
+#endif /* QC_MSM_CAMSS_VFE_VBIF_H */

linux-7.2.3/drivers/media/platform/qcom/camss/camss-vfe.h

@@ -0,0 +1,317 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * camss-vfe.h
+ *
+ * Qualcomm MSM Camera Subsystem - VFE (Video Front End) Module
+ *
+ * Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2015-2018 Linaro Ltd.
+ */
+#ifndef QC_MSM_CAMSS_VFE_H
+#define QC_MSM_CAMSS_VFE_H
+
+#include <linux/clk.h>
+#include <linux/spinlock_types.h>
+#include <media/media-entity.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-subdev.h>
+
+#include "camss-video.h"
+#include "camss-vfe-gen1.h"
+
+#define MSM_VFE_PAD_SINK 0
+#define MSM_VFE_PAD_SRC 1
+#define MSM_VFE_PADS_NUM 2
+
+#define MSM_VFE_IMAGE_MASTERS_NUM 7
+#define MSM_VFE_COMPOSITE_IRQ_NUM 4
+
+/* VFE halt timeout */
+#define VFE_HALT_TIMEOUT_MS 100
+/* Frame drop value. VAL + UPDATES - 1 should not exceed 31 */
+#define VFE_FRAME_DROP_VAL 30
+
+#define vfe_line_array(ptr_line)	\
+	((const struct vfe_line (*)[]) &(ptr_line)[-(ptr_line)->id])
+
+#define to_vfe(ptr_line)	\
+	container_of(vfe_line_array(ptr_line), struct vfe_device, line)
+
+enum vfe_output_state {
+	VFE_OUTPUT_OFF,
+	VFE_OUTPUT_RESERVED,
+	VFE_OUTPUT_SINGLE,
+	VFE_OUTPUT_CONTINUOUS,
+	VFE_OUTPUT_IDLE,
+	VFE_OUTPUT_STOPPING,
+	VFE_OUTPUT_ON,
+};
+
+enum vfe_line_id {
+	VFE_LINE_NONE = -1,
+	VFE_LINE_RDI0 = 0,
+	VFE_LINE_RDI1 = 1,
+	VFE_LINE_RDI2 = 2,
+	VFE_LINE_PIX = 3,
+	VFE_LINE_NUM_MAX = 4
+};
+
+struct vfe_output {
+	u8 wm_num;
+	u8 wm_idx[3];
+
+	struct camss_buffer *buf[2];
+	struct camss_buffer *last_buffer;
+	struct list_head pending_bufs;
+
+	unsigned int drop_update_idx;
+
+	union {
+		struct {
+			int active_buf;
+			int wait_sof;
+		} gen1;
+		struct {
+			int active_num;
+		} gen2;
+	};
+	enum vfe_output_state state;
+	unsigned int sequence;
+
+	int wait_reg_update;
+	struct completion sof;
+	struct completion reg_update;
+};
+
+struct vfe_line {
+	enum vfe_line_id id;
+	struct v4l2_subdev subdev;
+	struct media_pad pads[MSM_VFE_PADS_NUM];
+	struct v4l2_mbus_framefmt fmt[MSM_VFE_PADS_NUM];
+	struct v4l2_rect compose;
+	struct v4l2_rect crop;
+	struct camss_video video_out;
+	struct vfe_output output;
+	const struct camss_format_info *formats;
+	unsigned int nformats;
+};
+
+struct vfe_device;
+
+struct vfe_hw_ops {
+	void (*enable_irq)(struct vfe_device *vfe);
+	void (*global_reset)(struct vfe_device *vfe);
+	u32 (*hw_version)(struct vfe_device *vfe);
+	irqreturn_t (*isr)(int irq, void *dev);
+	void (*isr_read)(struct vfe_device *vfe, u32 *value0, u32 *value1);
+	void (*pm_domain_off)(struct vfe_device *vfe);
+	int (*pm_domain_on)(struct vfe_device *vfe);
+	void (*reg_update)(struct vfe_device *vfe, enum vfe_line_id line_id);
+	void (*reg_update_clear)(struct vfe_device *vfe,
+				 enum vfe_line_id line_id);
+	void (*subdev_init)(struct device *dev, struct vfe_device *vfe);
+	int (*vfe_disable)(struct vfe_line *line);
+	int (*vfe_enable)(struct vfe_line *line);
+	int (*vfe_halt)(struct vfe_device *vfe);
+	void (*violation_read)(struct vfe_device *vfe);
+	void (*vfe_wm_start)(struct vfe_device *vfe, u8 wm,
+			     struct vfe_line *line);
+	void (*vfe_wm_stop)(struct vfe_device *vfe, u8 wm);
+	void (*vfe_buf_done)(struct vfe_device *vfe, int port_id);
+	void (*vfe_wm_update)(struct vfe_device *vfe, u8 wm, u32 addr,
+			      struct vfe_line *line);
+};
+
+struct vfe_isr_ops {
+	void (*reset_ack)(struct vfe_device *vfe);
+	void (*halt_ack)(struct vfe_device *vfe);
+	void (*reg_update)(struct vfe_device *vfe, enum vfe_line_id line_id);
+	void (*sof)(struct vfe_device *vfe, enum vfe_line_id line_id);
+	void (*comp_done)(struct vfe_device *vfe, u8 comp);
+	void (*wm_done)(struct vfe_device *vfe, u8 wm);
+};
+
+struct vfe_subdev_resources {
+	bool is_lite;
+	u8 line_num;
+	bool has_pd;
+	char *pd_name;
+	bool has_vbif;
+	char *vbif_name;
+	const struct vfe_hw_ops *hw_ops;
+	const struct camss_formats *formats_rdi;
+	const struct camss_formats *formats_pix;
+};
+
+struct vfe_device {
+	struct camss *camss;
+	u8 id;
+	void __iomem *base;
+	void __iomem *vbif_base;
+	u32 irq;
+	char irq_name[30];
+	struct camss_clock *clock;
+	int nclocks;
+	struct completion reset_complete;
+	struct completion halt_complete;
+	struct mutex power_lock;
+	int power_count;
+	struct mutex stream_lock;
+	int stream_count;
+	spinlock_t output_lock;
+	enum vfe_line_id wm_output_map[MSM_VFE_IMAGE_MASTERS_NUM];
+	struct vfe_line line[VFE_LINE_NUM_MAX];
+	u32 reg_update;
+	u8 was_streaming;
+	const struct vfe_subdev_resources *res;
+	const struct vfe_hw_ops_gen1 *ops_gen1;
+	struct vfe_isr_ops isr_ops;
+	struct camss_video_ops video_ops;
+	struct device *genpd;
+	struct device_link *genpd_link;
+};
+
+struct camss_subdev_resources;
+
+int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe,
+			const struct camss_subdev_resources *res, u8 id);
+
+void msm_vfe_genpd_cleanup(struct vfe_device *vfe);
+
+int msm_vfe_register_entities(struct vfe_device *vfe,
+			      struct v4l2_device *v4l2_dev);
+
+void msm_vfe_unregister_entities(struct vfe_device *vfe);
+
+/*
+ * vfe_buf_add_pending - Add output buffer to list of pending
+ * @output: VFE output
+ * @buffer: Video buffer
+ */
+void vfe_buf_add_pending(struct vfe_output *output, struct camss_buffer *buffer);
+
+struct camss_buffer *vfe_buf_get_pending(struct vfe_output *output);
+
+int vfe_flush_buffers(struct camss_video *vid, enum vb2_buffer_state state);
+
+/*
+ * vfe_isr_comp_done - Process composite image done interrupt
+ * @vfe: VFE Device
+ * @comp: Composite image id
+ */
+void vfe_isr_comp_done(struct vfe_device *vfe, u8 comp);
+
+void vfe_isr_reset_ack(struct vfe_device *vfe);
+int vfe_put_output(struct vfe_line *line);
+int vfe_release_wm(struct vfe_device *vfe, u8 wm);
+int vfe_reserve_wm(struct vfe_device *vfe, enum vfe_line_id line_id);
+
+/*
+ * vfe_reset - Trigger reset on VFE module and wait to complete
+ * @vfe: VFE device
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+int vfe_reset(struct vfe_device *vfe);
+
+/*
+ * vfe_disable - Disable streaming on VFE line
+ * @line: VFE line
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+int vfe_disable(struct vfe_line *line);
+
+/*
+ * vfe_pm_domain_off - Disable power domains specific to this VFE.
+ * @vfe: VFE Device
+ */
+void vfe_pm_domain_off(struct vfe_device *vfe);
+
+/*
+ * vfe_pm_domain_on - Enable power domains specific to this VFE.
+ * @vfe: VFE Device
+ */
+int vfe_pm_domain_on(struct vfe_device *vfe);
+
+extern const struct camss_formats vfe_formats_rdi_8x16;
+extern const struct camss_formats vfe_formats_pix_8x16;
+extern const struct camss_formats vfe_formats_rdi_8x96;
+extern const struct camss_formats vfe_formats_pix_8x96;
+extern const struct camss_formats vfe_formats_rdi_845;
+extern const struct camss_formats vfe_formats_pix_845;
+
+extern const struct vfe_hw_ops vfe_ops_4_1;
+extern const struct vfe_hw_ops vfe_ops_4_7;
+extern const struct vfe_hw_ops vfe_ops_4_8;
+extern const struct vfe_hw_ops vfe_ops_170;
+extern const struct vfe_hw_ops vfe_ops_340;
+extern const struct vfe_hw_ops vfe_ops_480;
+extern const struct vfe_hw_ops vfe_ops_680;
+extern const struct vfe_hw_ops vfe_ops_gen3;
+
+int vfe_get(struct vfe_device *vfe);
+void vfe_put(struct vfe_device *vfe);
+
+/*
+ * vfe_is_lite - Return if VFE is VFE lite.
+ * @vfe: VFE Device
+ *
+ * Some VFE lites have a different register layout.
+ *
+ * Return whether VFE is VFE lite
+ */
+bool vfe_is_lite(struct vfe_device *vfe);
+
+/*
+ * vfe_hw_version - Process write master done interrupt
+ * @vfe: VFE Device
+ *
+ * Return vfe hw version
+ */
+u32 vfe_hw_version(struct vfe_device *vfe);
+/*
+ * vfe_enable - Enable streaming on VFE line
+ * @line: VFE line
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+int vfe_enable_v2(struct vfe_line *line);
+
+/*
+ * vfe_buf_done - Process write master done interrupt
+ * @vfe: VFE Device
+ * @wm: Write master id
+ */
+void vfe_buf_done(struct vfe_device *vfe, int wm);
+
+/*
+ * vfe_get_output_v2 - Get vfe output line
+ * line: VFE line
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+int vfe_get_output_v2(struct vfe_line *line);
+
+/*
+ * vfe_enable_output_v2 - Enable vfe output line
+ * line: VFE line
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+int vfe_enable_output_v2(struct vfe_line *line);
+
+/*
+ * vfe_queue_buffer_v2 - Add empty buffer
+ * @vid: Video device structure
+ * @buf: Buffer to be enqueued
+ *
+ * Add an empty buffer - depending on the current number of buffers it will be
+ * put in pending buffer queue or directly given to the hardware to be filled.
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+int vfe_queue_buffer_v2(struct camss_video *vid,
+			struct camss_buffer *buf);
+
+#endif /* QC_MSM_CAMSS_VFE_H */

linux-7.2.3/drivers/media/platform/qcom/camss/camss-video.c

@@ -0,0 +1,769 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * camss-video.c
+ *
+ * Qualcomm MSM Camera Subsystem - V4L2 device node
+ *
+ * Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2015-2018 Linaro Ltd.
+ */
+#include <linux/slab.h>
+#include <media/media-entity.h>
+#include <media/v4l2-dev.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-mc.h>
+#include <media/videobuf2-dma-sg.h>
+
+#include "camss-video.h"
+#include "camss.h"
+
+#define CAMSS_FRAME_MIN_WIDTH		1
+#define CAMSS_FRAME_MAX_WIDTH		8191
+#define CAMSS_FRAME_MIN_HEIGHT		1
+#define CAMSS_FRAME_MAX_HEIGHT_RDI	8191
+#define CAMSS_FRAME_MAX_HEIGHT_PIX	4096
+
+/* -----------------------------------------------------------------------------
+ * Helper functions
+ */
+
+/*
+ * video_mbus_to_pix_mp - Convert v4l2_mbus_framefmt to v4l2_pix_format_mplane
+ * @mbus: v4l2_mbus_framefmt format (input)
+ * @pix: v4l2_pix_format_mplane format (output)
+ * @f: a pointer to formats array element to be used for the conversion
+ * @alignment: bytesperline alignment value
+ *
+ * Fill the output pix structure with information from the input mbus format.
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+static int video_mbus_to_pix_mp(const struct v4l2_mbus_framefmt *mbus,
+				struct v4l2_pix_format_mplane *pix,
+				const struct camss_format_info *f,
+				unsigned int alignment)
+{
+	unsigned int i;
+	u32 bytesperline;
+
+	if (!alignment)
+		alignment = camss_format_get_bpl_alignment(f);
+
+	memset(pix, 0, sizeof(*pix));
+	v4l2_fill_pix_format_mplane(pix, mbus);
+	pix->pixelformat = f->pixelformat;
+	pix->num_planes = f->planes;
+	for (i = 0; i < pix->num_planes; i++) {
+		bytesperline = pix->width / f->hsub[i].numerator *
+			f->hsub[i].denominator * f->bpp[i] / 8;
+		bytesperline = roundup(bytesperline, alignment);
+		pix->plane_fmt[i].bytesperline = bytesperline;
+		pix->plane_fmt[i].sizeimage = pix->height /
+				f->vsub[i].numerator * f->vsub[i].denominator *
+				bytesperline;
+	}
+
+	return 0;
+}
+
+static struct v4l2_subdev *video_remote_subdev(struct camss_video *video,
+					       u32 *pad)
+{
+	struct media_pad *remote;
+
+	remote = media_pad_remote_pad_first(&video->pad);
+
+	if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
+		return NULL;
+
+	if (pad)
+		*pad = remote->index;
+
+	return media_entity_to_v4l2_subdev(remote->entity);
+}
+
+static int video_get_subdev_format(struct camss_video *video,
+				   struct v4l2_format *format)
+{
+	struct v4l2_subdev_format fmt = {
+		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+	};
+	struct v4l2_subdev *subdev;
+	u32 pad;
+	int ret;
+
+	subdev = video_remote_subdev(video, &pad);
+	if (subdev == NULL)
+		return -EPIPE;
+
+	fmt.pad = pad;
+
+	ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
+	if (ret)
+		return ret;
+
+	ret = camss_format_find_format(fmt.format.code, format->fmt.pix_mp.pixelformat,
+				       video->formats, video->nformats);
+	if (ret < 0)
+		return ret;
+
+	format->type = video->type;
+
+	return video_mbus_to_pix_mp(&fmt.format, &format->fmt.pix_mp,
+				    &video->formats[ret], video->bpl_alignment);
+}
+
+/* -----------------------------------------------------------------------------
+ * Video queue operations
+ */
+
+static int video_queue_setup(struct vb2_queue *q,
+	unsigned int *num_buffers, unsigned int *num_planes,
+	unsigned int sizes[], struct device *alloc_devs[])
+{
+	struct camss_video *video = vb2_get_drv_priv(q);
+	const struct v4l2_pix_format_mplane *format =
+						&video->active_fmt.fmt.pix_mp;
+	unsigned int i;
+
+	if (*num_planes) {
+		if (*num_planes != format->num_planes)
+			return -EINVAL;
+
+		for (i = 0; i < *num_planes; i++)
+			if (sizes[i] < format->plane_fmt[i].sizeimage)
+				return -EINVAL;
+
+		return 0;
+	}
+
+	*num_planes = format->num_planes;
+
+	for (i = 0; i < *num_planes; i++)
+		sizes[i] = format->plane_fmt[i].sizeimage;
+
+	return 0;
+}
+
+static int video_buf_init(struct vb2_buffer *vb)
+{
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+	struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
+	struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer,
+						   vb);
+	const struct v4l2_pix_format_mplane *format =
+						&video->active_fmt.fmt.pix_mp;
+	struct sg_table *sgt;
+	unsigned int i;
+
+	for (i = 0; i < format->num_planes; i++) {
+		sgt = vb2_dma_sg_plane_desc(vb, i);
+		if (!sgt)
+			return -EFAULT;
+
+		buffer->addr[i] = sg_dma_address(sgt->sgl);
+	}
+
+	if (format->pixelformat == V4L2_PIX_FMT_NV12 ||
+			format->pixelformat == V4L2_PIX_FMT_NV21 ||
+			format->pixelformat == V4L2_PIX_FMT_NV16 ||
+			format->pixelformat == V4L2_PIX_FMT_NV61)
+		buffer->addr[1] = buffer->addr[0] +
+				format->plane_fmt[0].bytesperline *
+				format->height;
+
+	return 0;
+}
+
+static int video_buf_prepare(struct vb2_buffer *vb)
+{
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+	struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
+	const struct v4l2_pix_format_mplane *format =
+						&video->active_fmt.fmt.pix_mp;
+	unsigned int i;
+
+	for (i = 0; i < format->num_planes; i++) {
+		if (format->plane_fmt[i].sizeimage > vb2_plane_size(vb, i))
+			return -EINVAL;
+
+		vb2_set_plane_payload(vb, i, format->plane_fmt[i].sizeimage);
+	}
+
+	vbuf->field = V4L2_FIELD_NONE;
+
+	return 0;
+}
+
+static void video_buf_queue(struct vb2_buffer *vb)
+{
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+	struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
+	struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer,
+						   vb);
+
+	video->ops->queue_buffer(video, buffer);
+}
+
+static int video_check_format(struct camss_video *video)
+{
+	struct v4l2_pix_format_mplane *pix = &video->active_fmt.fmt.pix_mp;
+	struct v4l2_format format;
+	struct v4l2_pix_format_mplane *sd_pix = &format.fmt.pix_mp;
+	int ret;
+
+	sd_pix->pixelformat = pix->pixelformat;
+	ret = video_get_subdev_format(video, &format);
+	if (ret < 0)
+		return ret;
+
+	dev_dbg(video->camss->dev,
+		"%s: format is (%ux%u %p4cc/%up field:%u), trying (%ux%u %p4cc/%up field:%u)",
+		 video->vdev.name, sd_pix->width, sd_pix->height, &sd_pix->pixelformat,
+		 sd_pix->num_planes, sd_pix->field, pix->width, pix->height, &pix->pixelformat,
+		 pix->num_planes, pix->field);
+
+	if (pix->pixelformat != sd_pix->pixelformat ||
+	    pix->height != sd_pix->height ||
+	    pix->width != sd_pix->width ||
+	    pix->num_planes != sd_pix->num_planes ||
+	    pix->field != format.fmt.pix_mp.field)
+		return -EPIPE;
+
+	return 0;
+}
+
+static int video_prepare_streaming(struct vb2_queue *q)
+{
+	struct camss_video *video = vb2_get_drv_priv(q);
+	struct video_device *vdev = &video->vdev;
+	int ret;
+
+	ret = v4l2_pipeline_pm_get(&vdev->entity);
+	if (ret < 0) {
+		dev_err(video->camss->dev, "Failed to power up pipeline: %d\n",
+			ret);
+	}
+
+	return ret;
+}
+
+static int video_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+	struct camss_video *video = vb2_get_drv_priv(q);
+	struct video_device *vdev = &video->vdev;
+	struct media_entity *entity;
+	struct media_pad *pad;
+	struct v4l2_subdev *subdev;
+	int ret;
+
+	ret = video_device_pipeline_alloc_start(vdev);
+	if (ret < 0) {
+		dev_err(video->camss->dev, "Failed to start media pipeline: %d\n", ret);
+		goto flush_buffers;
+	}
+
+	ret = video_check_format(video);
+	if (ret < 0)
+		goto error;
+
+	entity = &vdev->entity;
+	while (1) {
+		pad = &entity->pads[0];
+		if (!(pad->flags & MEDIA_PAD_FL_SINK))
+			break;
+
+		pad = media_pad_remote_pad_first(pad);
+		if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
+			break;
+
+		entity = pad->entity;
+		subdev = media_entity_to_v4l2_subdev(entity);
+
+		ret = v4l2_subdev_call(subdev, video, s_stream, 1);
+		if (ret < 0 && ret != -ENOIOCTLCMD)
+			goto error;
+	}
+
+	return 0;
+
+error:
+	video_device_pipeline_stop(vdev);
+
+flush_buffers:
+	video->ops->flush_buffers(video, VB2_BUF_STATE_QUEUED);
+
+	return ret;
+}
+
+static void video_stop_streaming(struct vb2_queue *q)
+{
+	struct camss_video *video = vb2_get_drv_priv(q);
+	struct video_device *vdev = &video->vdev;
+	struct media_entity *entity;
+	struct media_pad *pad;
+	struct v4l2_subdev *subdev;
+	int ret;
+
+	entity = &vdev->entity;
+	while (1) {
+		pad = &entity->pads[0];
+		if (!(pad->flags & MEDIA_PAD_FL_SINK))
+			break;
+
+		pad = media_pad_remote_pad_first(pad);
+		if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
+			break;
+
+		entity = pad->entity;
+		subdev = media_entity_to_v4l2_subdev(entity);
+
+		ret = v4l2_subdev_call(subdev, video, s_stream, 0);
+
+		if (ret) {
+			dev_err(video->camss->dev, "Video pipeline stop failed: %d\n", ret);
+			return;
+		}
+	}
+
+	video_device_pipeline_stop(vdev);
+
+	video->ops->flush_buffers(video, VB2_BUF_STATE_ERROR);
+}
+
+static void video_unprepare_streaming(struct vb2_queue *q)
+{
+	struct camss_video *video = vb2_get_drv_priv(q);
+	struct video_device *vdev = &video->vdev;
+
+	v4l2_pipeline_pm_put(&vdev->entity);
+}
+
+static const struct vb2_ops msm_video_vb2_q_ops = {
+	.queue_setup     = video_queue_setup,
+	.buf_init        = video_buf_init,
+	.buf_prepare     = video_buf_prepare,
+	.buf_queue       = video_buf_queue,
+	.prepare_streaming = video_prepare_streaming,
+	.start_streaming = video_start_streaming,
+	.stop_streaming  = video_stop_streaming,
+	.unprepare_streaming = video_unprepare_streaming,
+};
+
+/* -----------------------------------------------------------------------------
+ * V4L2 ioctls
+ */
+
+static int video_querycap(struct file *file, void *fh,
+			  struct v4l2_capability *cap)
+{
+	strscpy(cap->driver, "qcom-camss", sizeof(cap->driver));
+	strscpy(cap->card, "Qualcomm Camera Subsystem", sizeof(cap->card));
+
+	return 0;
+}
+
+static int video_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
+{
+	struct camss_video *video = video_drvdata(file);
+	int i, j, k;
+	u32 mcode = f->mbus_code;
+
+	if (f->type != video->type)
+		return -EINVAL;
+
+	if (f->index >= video->nformats)
+		return -EINVAL;
+
+	/*
+	 * Find index "i" of "k"th unique pixelformat in formats array.
+	 *
+	 * If f->mbus_code passed to video_enum_fmt() is not zero, a device
+	 * with V4L2_CAP_IO_MC capability restricts enumeration to only the
+	 * pixel formats that can be produced from that media bus code.
+	 * This is implemented by skipping video->formats[] entries with
+	 * code != f->mbus_code (if f->mbus_code is not zero).
+	 * If the f->mbus_code passed to video_enum_fmt() is not supported,
+	 * -EINVAL is returned.
+	 * If f->mbus_code is zero, all the pixel formats are enumerated.
+	 */
+	k = -1;
+	for (i = 0; i < video->nformats; i++) {
+		if (mcode != 0 && video->formats[i].code != mcode)
+			continue;
+
+		for (j = 0; j < i; j++) {
+			if (mcode != 0 && video->formats[j].code != mcode)
+				continue;
+			if (video->formats[i].pixelformat ==
+					video->formats[j].pixelformat)
+				break;
+		}
+
+		if (j == i)
+			k++;
+
+		if (k == f->index)
+			break;
+	}
+
+	if (k == -1 || k < f->index)
+		/*
+		 * All the unique pixel formats matching the arguments
+		 * have been enumerated (k >= 0 and f->index > 0), or
+		 * no pixel formats match the non-zero f->mbus_code (k == -1).
+		 */
+		return -EINVAL;
+
+	f->pixelformat = video->formats[i].pixelformat;
+
+	return 0;
+}
+
+static int video_enum_framesizes(struct file *file, void *fh,
+				 struct v4l2_frmsizeenum *fsize)
+{
+	struct camss_video *video = video_drvdata(file);
+	int i;
+
+	if (fsize->index)
+		return -EINVAL;
+
+	/* Only accept pixel format present in the formats[] table */
+	for (i = 0; i < video->nformats; i++) {
+		if (video->formats[i].pixelformat == fsize->pixel_format)
+			break;
+	}
+
+	if (i == video->nformats)
+		return -EINVAL;
+
+	fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
+	fsize->stepwise.min_width = CAMSS_FRAME_MIN_WIDTH;
+	fsize->stepwise.max_width = CAMSS_FRAME_MAX_WIDTH;
+	fsize->stepwise.min_height = CAMSS_FRAME_MIN_HEIGHT;
+	fsize->stepwise.max_height = (video->line_based) ?
+		CAMSS_FRAME_MAX_HEIGHT_PIX : CAMSS_FRAME_MAX_HEIGHT_RDI;
+	fsize->stepwise.step_width = 1;
+	fsize->stepwise.step_height = 1;
+
+	return 0;
+}
+
+static int video_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
+{
+	struct camss_video *video = video_drvdata(file);
+
+	*f = video->active_fmt;
+
+	return 0;
+}
+
+static int __video_try_fmt(struct camss_video *video, struct v4l2_format *f)
+{
+	unsigned int alignment = video->bpl_alignment;
+	struct v4l2_pix_format_mplane *pix_mp;
+	const struct camss_format_info *fi;
+	struct v4l2_plane_pix_format *p;
+	u32 bytesperline[3] = { 0 };
+	u32 sizeimage[3] = { 0 };
+	u32 width, height;
+	u32 bpl, lines;
+	int i, j;
+
+	pix_mp = &f->fmt.pix_mp;
+
+	if (video->line_based)
+		for (i = 0; i < pix_mp->num_planes && i < 3; i++) {
+			p = &pix_mp->plane_fmt[i];
+			bytesperline[i] = clamp_t(u32, p->bytesperline,
+						  1, 65528);
+			sizeimage[i] = clamp_t(u32, p->sizeimage,
+					       bytesperline[i],
+					       bytesperline[i] * CAMSS_FRAME_MAX_HEIGHT_PIX);
+		}
+
+	for (j = 0; j < video->nformats; j++)
+		if (pix_mp->pixelformat == video->formats[j].pixelformat)
+			break;
+
+	if (j == video->nformats)
+		j = 0; /* default format */
+
+	fi = &video->formats[j];
+	width = pix_mp->width;
+	height = pix_mp->height;
+
+	if (!alignment)
+		alignment = camss_format_get_bpl_alignment(fi);
+
+	memset(pix_mp, 0, sizeof(*pix_mp));
+
+	pix_mp->pixelformat = fi->pixelformat;
+	pix_mp->width = clamp_t(u32, width, 1, CAMSS_FRAME_MAX_WIDTH);
+	pix_mp->height = clamp_t(u32, height, 1, CAMSS_FRAME_MAX_HEIGHT_RDI);
+	pix_mp->num_planes = fi->planes;
+	for (i = 0; i < pix_mp->num_planes; i++) {
+		bpl = pix_mp->width / fi->hsub[i].numerator *
+			fi->hsub[i].denominator * fi->bpp[i] / 8;
+		bpl = roundup(bpl, alignment);
+		pix_mp->plane_fmt[i].bytesperline = bpl;
+		pix_mp->plane_fmt[i].sizeimage = pix_mp->height /
+			fi->vsub[i].numerator * fi->vsub[i].denominator * bpl;
+	}
+
+	pix_mp->field = V4L2_FIELD_NONE;
+	pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
+	pix_mp->flags = 0;
+	pix_mp->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pix_mp->colorspace);
+	pix_mp->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
+					pix_mp->colorspace, pix_mp->ycbcr_enc);
+	pix_mp->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix_mp->colorspace);
+
+	if (video->line_based)
+		for (i = 0; i < pix_mp->num_planes; i++) {
+			p = &pix_mp->plane_fmt[i];
+			p->bytesperline = clamp_t(u32, p->bytesperline,
+						  1, 65528);
+			p->sizeimage = clamp_t(u32, p->sizeimage,
+					       p->bytesperline,
+					       p->bytesperline * CAMSS_FRAME_MAX_HEIGHT_PIX);
+			lines = p->sizeimage / p->bytesperline;
+
+			if (p->bytesperline < bytesperline[i])
+				p->bytesperline = roundup(bytesperline[i], alignment);
+
+			if (p->sizeimage < p->bytesperline * lines)
+				p->sizeimage = p->bytesperline * lines;
+
+			if (p->sizeimage < sizeimage[i])
+				p->sizeimage = sizeimage[i];
+		}
+
+	return 0;
+}
+
+static int video_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
+{
+	struct camss_video *video = video_drvdata(file);
+
+	return __video_try_fmt(video, f);
+}
+
+static int video_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
+{
+	struct camss_video *video = video_drvdata(file);
+	int ret;
+
+	if (vb2_is_busy(&video->vb2_q))
+		return -EBUSY;
+
+	ret = __video_try_fmt(video, f);
+	if (ret < 0)
+		return ret;
+
+	video->active_fmt = *f;
+
+	return 0;
+}
+
+static int video_enum_input(struct file *file, void *fh,
+			    struct v4l2_input *input)
+{
+	if (input->index > 0)
+		return -EINVAL;
+
+	strscpy(input->name, "camera", sizeof(input->name));
+	input->type = V4L2_INPUT_TYPE_CAMERA;
+
+	return 0;
+}
+
+static int video_g_input(struct file *file, void *fh, unsigned int *input)
+{
+	*input = 0;
+
+	return 0;
+}
+
+static int video_s_input(struct file *file, void *fh, unsigned int input)
+{
+	return input == 0 ? 0 : -EINVAL;
+}
+
+static const struct v4l2_ioctl_ops msm_vid_ioctl_ops = {
+	.vidioc_querycap		= video_querycap,
+	.vidioc_enum_fmt_vid_cap	= video_enum_fmt,
+	.vidioc_enum_framesizes		= video_enum_framesizes,
+	.vidioc_g_fmt_vid_cap_mplane	= video_g_fmt,
+	.vidioc_s_fmt_vid_cap_mplane	= video_s_fmt,
+	.vidioc_try_fmt_vid_cap_mplane	= video_try_fmt,
+	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
+	.vidioc_querybuf		= vb2_ioctl_querybuf,
+	.vidioc_qbuf			= vb2_ioctl_qbuf,
+	.vidioc_expbuf			= vb2_ioctl_expbuf,
+	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
+	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
+	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
+	.vidioc_streamon		= vb2_ioctl_streamon,
+	.vidioc_streamoff		= vb2_ioctl_streamoff,
+	.vidioc_enum_input		= video_enum_input,
+	.vidioc_g_input			= video_g_input,
+	.vidioc_s_input			= video_s_input,
+};
+
+/* -----------------------------------------------------------------------------
+ * V4L2 file operations
+ */
+
+static const struct v4l2_file_operations msm_vid_fops = {
+	.owner          = THIS_MODULE,
+	.unlocked_ioctl = video_ioctl2,
+	.open           = v4l2_fh_open,
+	.release        = vb2_fop_release,
+	.poll           = vb2_fop_poll,
+	.mmap		= vb2_fop_mmap,
+	.read		= vb2_fop_read,
+};
+
+/* -----------------------------------------------------------------------------
+ * CAMSS video core
+ */
+
+static void msm_video_release(struct video_device *vdev)
+{
+	struct camss_video *video = video_get_drvdata(vdev);
+
+	media_entity_cleanup(&vdev->entity);
+
+	mutex_destroy(&video->q_lock);
+	mutex_destroy(&video->lock);
+
+	if (atomic_dec_and_test(&video->camss->ref_count))
+		camss_delete(video->camss);
+}
+
+/*
+ * msm_video_init_format - Helper function to initialize format
+ * @video: struct camss_video
+ *
+ * Initialize pad format with default value.
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+static int msm_video_init_format(struct camss_video *video)
+{
+	int ret;
+	struct v4l2_format format = {
+		.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
+		.fmt.pix_mp = {
+			.width = 1920,
+			.height = 1080,
+			.pixelformat = video->formats[0].pixelformat,
+		},
+	};
+
+	ret = __video_try_fmt(video, &format);
+	if (ret < 0)
+		return ret;
+
+	video->active_fmt = format;
+
+	return 0;
+}
+
+/*
+ * msm_video_register - Register a video device node
+ * @video: struct camss_video
+ * @v4l2_dev: V4L2 device
+ * @name: name to be used for the video device node
+ *
+ * Initialize and register a video device node to a V4L2 device. Also
+ * initialize the vb2 queue.
+ *
+ * Return 0 on success or a negative error code otherwise
+ */
+
+int msm_video_register(struct camss_video *video, struct v4l2_device *v4l2_dev,
+		       const char *name)
+{
+	struct media_pad *pad = &video->pad;
+	struct video_device *vdev;
+	struct vb2_queue *q;
+	int ret;
+
+	vdev = &video->vdev;
+
+	mutex_init(&video->q_lock);
+
+	q = &video->vb2_q;
+	q->drv_priv = video;
+	q->mem_ops = &vb2_dma_sg_memops;
+	q->ops = &msm_video_vb2_q_ops;
+	q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+	q->io_modes = VB2_DMABUF | VB2_MMAP | VB2_READ;
+	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+	q->buf_struct_size = sizeof(struct camss_buffer);
+	q->dev = video->camss->dev;
+	q->lock = &video->q_lock;
+	ret = vb2_queue_init(q);
+	if (ret < 0) {
+		dev_err(v4l2_dev->dev, "Failed to init vb2 queue: %d\n", ret);
+		goto error_vb2_init;
+	}
+
+	pad->flags = MEDIA_PAD_FL_SINK;
+	ret = media_entity_pads_init(&vdev->entity, 1, pad);
+	if (ret < 0) {
+		dev_err(v4l2_dev->dev, "Failed to init video entity: %d\n",
+			ret);
+		goto error_vb2_init;
+	}
+
+	mutex_init(&video->lock);
+
+	ret = msm_video_init_format(video);
+	if (ret < 0) {
+		dev_err(v4l2_dev->dev, "Failed to init format: %d\n", ret);
+		goto error_video_register;
+	}
+
+	vdev->fops = &msm_vid_fops;
+	vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING
+			  | V4L2_CAP_READWRITE | V4L2_CAP_IO_MC;
+	vdev->ioctl_ops = &msm_vid_ioctl_ops;
+	vdev->release = msm_video_release;
+	vdev->v4l2_dev = v4l2_dev;
+	vdev->vfl_dir = VFL_DIR_RX;
+	vdev->queue = &video->vb2_q;
+	vdev->lock = &video->lock;
+	strscpy(vdev->name, name, sizeof(vdev->name));
+
+	ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
+	if (ret < 0) {
+		dev_err(v4l2_dev->dev, "Failed to register video device: %d\n",
+			ret);
+		goto error_video_register;
+	}
+
+	video_set_drvdata(vdev, video);
+	atomic_inc(&video->camss->ref_count);
+
+	return 0;
+
+error_video_register:
+	media_entity_cleanup(&vdev->entity);
+	mutex_destroy(&video->lock);
+error_vb2_init:
+	mutex_destroy(&video->q_lock);
+
+	return ret;
+}
+
+void msm_video_unregister(struct camss_video *video)
+{
+	atomic_inc(&video->camss->ref_count);
+	vb2_video_unregister_device(&video->vdev);
+	atomic_dec(&video->camss->ref_count);
+}

linux-7.2.3/drivers/media/platform/qcom/camss/camss-video.h

@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * camss-video.h
+ *
+ * Qualcomm MSM Camera Subsystem - V4L2 device node
+ *
+ * Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2015-2018 Linaro Ltd.
+ */
+#ifndef QC_MSM_CAMSS_VIDEO_H
+#define QC_MSM_CAMSS_VIDEO_H
+
+#include <linux/mutex.h>
+#include <linux/videodev2.h>
+#include <media/media-entity.h>
+#include <media/v4l2-dev.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-mediabus.h>
+#include <media/videobuf2-v4l2.h>
+
+struct camss_buffer {
+	struct vb2_v4l2_buffer vb;
+	dma_addr_t addr[3];
+	struct list_head queue;
+};
+
+struct camss_video;
+
+struct camss_video_ops {
+	int (*queue_buffer)(struct camss_video *vid, struct camss_buffer *buf);
+	int (*flush_buffers)(struct camss_video *vid,
+			     enum vb2_buffer_state state);
+};
+
+struct camss_video {
+	struct camss *camss;
+	struct vb2_queue vb2_q;
+	struct video_device vdev;
+	struct media_pad pad;
+	struct v4l2_format active_fmt;
+	enum v4l2_buf_type type;
+	struct media_pipeline pipe;
+	const struct camss_video_ops *ops;
+	struct mutex lock;
+	struct mutex q_lock;
+	unsigned int bpl_alignment;
+	unsigned int line_based;
+	const struct camss_format_info *formats;
+	unsigned int nformats;
+};
+
+int msm_video_register(struct camss_video *video, struct v4l2_device *v4l2_dev,
+		       const char *name);
+
+void msm_video_unregister(struct camss_video *video);
+
+#endif /* QC_MSM_CAMSS_VIDEO_H */

linux-7.2.3/drivers/media/platform/qcom/camss/camss.h

@@ -0,0 +1,183 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * camss.h
+ *
+ * Qualcomm MSM Camera Subsystem - Core
+ *
+ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2015-2018 Linaro Ltd.
+ */
+#ifndef QC_MSM_CAMSS_H
+#define QC_MSM_CAMSS_H
+
+#include <linux/device.h>
+#include <linux/types.h>
+#include <media/v4l2-async.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-subdev.h>
+#include <media/media-device.h>
+#include <media/media-entity.h>
+
+#include "camss-csid.h"
+#include "camss-csiphy.h"
+#include "camss-ispif.h"
+#include "camss-tpg.h"
+#include "camss-vfe.h"
+#include "camss-format.h"
+
+#define to_camss(ptr_module)	\
+	container_of(ptr_module, struct camss, ptr_module)
+
+#define to_device(ptr_module)	\
+	(to_camss(ptr_module)->dev)
+
+#define module_pointer(ptr_module, index)	\
+	((const struct ptr_module##_device (*)[]) &(ptr_module[-(index)]))
+
+#define to_camss_index(ptr_module, index)	\
+	container_of(module_pointer(ptr_module, index),	\
+		     struct camss, ptr_module)
+
+#define to_device_index(ptr_module, index)	\
+	(to_camss_index(ptr_module, index)->dev)
+
+#define CAMSS_RES_MAX 17
+#define CAMSS_INIT_BUF_COUNT 2
+
+struct camss_subdev_resources {
+	struct regulator_bulk_data regulators[CAMSS_RES_MAX];
+	char *clock[CAMSS_RES_MAX];
+	char *clock_for_reset[CAMSS_RES_MAX];
+	u32 clock_rate[CAMSS_RES_MAX][CAMSS_RES_MAX];
+	char *reg[CAMSS_RES_MAX];
+	char *interrupt[CAMSS_RES_MAX];
+	union {
+		struct csiphy_subdev_resources csiphy;
+		struct tpg_subdev_resources tpg;
+		struct csid_subdev_resources csid;
+		struct vfe_subdev_resources vfe;
+	};
+};
+
+struct icc_bw_tbl {
+	u32 avg;
+	u32 peak;
+};
+
+struct resources_icc {
+	char *name;
+	struct icc_bw_tbl icc_bw_tbl;
+};
+
+struct resources_wrapper {
+	char *reg;
+};
+
+enum pm_domain {
+	PM_DOMAIN_VFE0 = 0,
+	PM_DOMAIN_VFE1 = 1,
+	PM_DOMAIN_VFELITE = 2,		/* VFELITE / TOP GDSC */
+};
+
+enum camss_version {
+	CAMSS_660,
+	CAMSS_2290,
+	CAMSS_6150,
+	CAMSS_6350,
+	CAMSS_7280,
+	CAMSS_8x16,
+	CAMSS_8x39,
+	CAMSS_8x53,
+	CAMSS_8x96,
+	CAMSS_8250,
+	CAMSS_8280XP,
+	CAMSS_8300,
+	CAMSS_845,
+	CAMSS_8550,
+	CAMSS_8650,
+	CAMSS_8775P,
+	CAMSS_X1E80100,
+};
+
+enum icc_count {
+	ICC_DEFAULT_COUNT = 0,
+	ICC_SM8250_COUNT = 4,
+};
+
+struct camss_resources {
+	enum camss_version version;
+	const char *pd_name;
+	const struct camss_subdev_resources *csiphy_res;
+	const struct camss_subdev_resources *tpg_res;
+	const struct camss_subdev_resources *csid_res;
+	const struct camss_subdev_resources *ispif_res;
+	const struct camss_subdev_resources *vfe_res;
+	const struct resources_wrapper *csid_wrapper_res;
+	const struct resources_icc *icc_res;
+	const unsigned int icc_path_num;
+	const unsigned int csiphy_num;
+	const unsigned int tpg_num;
+	const unsigned int csid_num;
+	const unsigned int vfe_num;
+};
+
+struct camss {
+	struct v4l2_device v4l2_dev;
+	struct v4l2_async_notifier notifier;
+	struct media_device media_dev;
+	struct device *dev;
+	struct csiphy_device *csiphy;
+	struct tpg_device *tpg;
+	struct csid_device *csid;
+	struct ispif_device *ispif;
+	struct vfe_device *vfe;
+	void __iomem *csid_wrapper_base;
+	atomic_t ref_count;
+	int genpd_num;
+	struct device *genpd;
+	struct device_link *genpd_link;
+	struct icc_path *icc_path[ICC_SM8250_COUNT];
+	const struct camss_resources *res;
+};
+
+struct camss_camera_interface {
+	u8 csiphy_id;
+	struct csiphy_csi2_cfg csi2;
+};
+
+struct camss_async_subdev {
+	struct v4l2_async_connection asd; /* must be first */
+	struct camss_camera_interface interface;
+};
+
+struct camss_clock {
+	struct clk *clk;
+	const char *name;
+	u32 *freq;
+	u32 nfreqs;
+};
+
+struct parent_dev_ops {
+	int (*get)(struct camss *camss, int id);
+	int (*put)(struct camss *camss, int id);
+	void __iomem *(*get_base_address)(struct camss *camss, int id);
+};
+
+void camss_add_clock_margin(u64 *rate);
+int camss_enable_clocks(int nclocks, struct camss_clock *clock,
+			struct device *dev);
+void camss_disable_clocks(int nclocks, struct camss_clock *clock);
+struct media_pad *camss_find_sensor_pad(struct media_entity *entity);
+s64 camss_get_link_freq(struct media_entity *entity, unsigned int bpp,
+			unsigned int lanes);
+int camss_get_pixel_clock(struct media_entity *entity, u64 *pixel_clock);
+int camss_pm_domain_on(struct camss *camss, int id);
+void camss_pm_domain_off(struct camss *camss, int id);
+int camss_vfe_get(struct camss *camss, int id);
+void camss_vfe_put(struct camss *camss, int id);
+void camss_delete(struct camss *camss);
+void camss_buf_done(struct camss *camss, int hw_id, int port_id);
+void camss_reg_update(struct camss *camss, int hw_id,
+		      int port_id, bool is_clear);
+
+#endif /* QC_MSM_CAMSS_H */