Resguardo inicial

linux-7.2.3/drivers/media/rc/img-ir/Kconfig

@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config IR_IMG
+	tristate "ImgTec IR Decoder"
+	depends on RC_CORE
+	depends on MIPS || COMPILE_TEST
+	select IR_IMG_HW if !IR_IMG_RAW
+	help
+	   Say Y or M here if you want to use the ImgTec infrared decoder
+	   functionality found in SoCs such as TZ1090.
+
+config IR_IMG_RAW
+	bool "Raw decoder"
+	depends on IR_IMG
+	help
+	   Say Y here to enable the raw mode driver which passes raw IR signal
+	   changes to the IR raw decoders for software decoding. This is much
+	   less reliable (due to lack of timestamps) and consumes more
+	   processing power than using hardware decode, but can be useful for
+	   testing, debug, and to make more protocols available.
+
+config IR_IMG_HW
+	bool "Hardware decoder"
+	depends on IR_IMG
+	help
+	   Say Y here to enable the hardware decode driver which decodes the IR
+	   signals in hardware. This is more reliable, consumes less processing
+	   power since only a single interrupt is received for each scancode,
+	   and allows an IR scancode to be used as a wake event.
+
+config IR_IMG_NEC
+	bool "NEC protocol support"
+	depends on IR_IMG_HW
+	select BITREVERSE
+	help
+	   Say Y here to enable support for the NEC, extended NEC, and 32-bit
+	   NEC protocols in the ImgTec infrared decoder block.
+
+config IR_IMG_JVC
+	bool "JVC protocol support"
+	depends on IR_IMG_HW
+	help
+	   Say Y here to enable support for the JVC protocol in the ImgTec
+	   infrared decoder block.
+
+config IR_IMG_SONY
+	bool "Sony protocol support"
+	depends on IR_IMG_HW
+	help
+	   Say Y here to enable support for the Sony protocol in the ImgTec
+	   infrared decoder block.
+
+config IR_IMG_SHARP
+	bool "Sharp protocol support"
+	depends on IR_IMG_HW
+	help
+	   Say Y here to enable support for the Sharp protocol in the ImgTec
+	   infrared decoder block.
+
+config IR_IMG_SANYO
+	bool "Sanyo protocol support"
+	depends on IR_IMG_HW
+	help
+	   Say Y here to enable support for the Sanyo protocol (used by Sanyo,
+	   Aiwa, Chinon remotes) in the ImgTec infrared decoder block.
+
+config IR_IMG_RC5
+	bool "Philips RC5 protocol support"
+	depends on IR_IMG_HW
+	help
+	   Say Y here to enable support for the RC5 protocol in the ImgTec
+	   infrared decoder block.
+
+config IR_IMG_RC6
+	bool "Philips RC6 protocol support"
+	depends on IR_IMG_HW
+	help
+	   Say Y here to enable support for the RC6 protocol in the ImgTec
+	   infrared decoder block.
+	   Note: This version only supports mode 0.

linux-7.2.3/drivers/media/rc/img-ir/Makefile

@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: GPL-2.0
+img-ir-y			:= img-ir-core.o
+img-ir-$(CONFIG_IR_IMG_RAW)	+= img-ir-raw.o
+img-ir-$(CONFIG_IR_IMG_HW)	+= img-ir-hw.o
+img-ir-$(CONFIG_IR_IMG_NEC)	+= img-ir-nec.o
+img-ir-$(CONFIG_IR_IMG_JVC)	+= img-ir-jvc.o
+img-ir-$(CONFIG_IR_IMG_SONY)	+= img-ir-sony.o
+img-ir-$(CONFIG_IR_IMG_SHARP)	+= img-ir-sharp.o
+img-ir-$(CONFIG_IR_IMG_SANYO)	+= img-ir-sanyo.o
+img-ir-$(CONFIG_IR_IMG_RC5)	+= img-ir-rc5.o
+img-ir-$(CONFIG_IR_IMG_RC6)	+= img-ir-rc6.o
+img-ir-objs			:= $(img-ir-y)
+
+obj-$(CONFIG_IR_IMG)		+= img-ir.o

linux-7.2.3/drivers/media/rc/img-ir/img-ir-core.c

@@ -0,0 +1,191 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ImgTec IR Decoder found in PowerDown Controller.
+ *
+ * Copyright 2010-2014 Imagination Technologies Ltd.
+ *
+ * This contains core img-ir code for setting up the driver. The two interfaces
+ * (raw and hardware decode) are handled separately.
+ */
+
+#include <linux/clk.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include "img-ir.h"
+
+static irqreturn_t img_ir_isr(int irq, void *dev_id)
+{
+	struct img_ir_priv *priv = dev_id;
+	u32 irq_status;
+
+	spin_lock(&priv->lock);
+	/* we have to clear irqs before reading */
+	irq_status = img_ir_read(priv, IMG_IR_IRQ_STATUS);
+	img_ir_write(priv, IMG_IR_IRQ_CLEAR, irq_status);
+
+	/* don't handle valid data irqs if we're only interested in matches */
+	irq_status &= img_ir_read(priv, IMG_IR_IRQ_ENABLE);
+
+	/* hand off edge interrupts to raw decode handler */
+	if (irq_status & IMG_IR_IRQ_EDGE && img_ir_raw_enabled(&priv->raw))
+		img_ir_isr_raw(priv, irq_status);
+
+	/* hand off hardware match interrupts to hardware decode handler */
+	if (irq_status & (IMG_IR_IRQ_DATA_MATCH |
+			  IMG_IR_IRQ_DATA_VALID |
+			  IMG_IR_IRQ_DATA2_VALID) &&
+	    img_ir_hw_enabled(&priv->hw))
+		img_ir_isr_hw(priv, irq_status);
+
+	spin_unlock(&priv->lock);
+	return IRQ_HANDLED;
+}
+
+static void img_ir_setup(struct img_ir_priv *priv)
+{
+	/* start off with interrupts disabled */
+	img_ir_write(priv, IMG_IR_IRQ_ENABLE, 0);
+
+	img_ir_setup_raw(priv);
+	img_ir_setup_hw(priv);
+
+	if (!IS_ERR(priv->clk))
+		clk_prepare_enable(priv->clk);
+}
+
+static void img_ir_ident(struct img_ir_priv *priv)
+{
+	u32 core_rev = img_ir_read(priv, IMG_IR_CORE_REV);
+
+	dev_info(priv->dev,
+		 "IMG IR Decoder (%d.%d.%d.%d) probed successfully\n",
+		 (core_rev & IMG_IR_DESIGNER) >> IMG_IR_DESIGNER_SHIFT,
+		 (core_rev & IMG_IR_MAJOR_REV) >> IMG_IR_MAJOR_REV_SHIFT,
+		 (core_rev & IMG_IR_MINOR_REV) >> IMG_IR_MINOR_REV_SHIFT,
+		 (core_rev & IMG_IR_MAINT_REV) >> IMG_IR_MAINT_REV_SHIFT);
+	dev_info(priv->dev, "Modes:%s%s\n",
+		 img_ir_hw_enabled(&priv->hw) ? " hardware" : "",
+		 img_ir_raw_enabled(&priv->raw) ? " raw" : "");
+}
+
+static int img_ir_probe(struct platform_device *pdev)
+{
+	struct img_ir_priv *priv;
+	int irq, error, error2;
+
+	/* Get resources from platform device */
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
+
+	/* Private driver data */
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, priv);
+	priv->dev = &pdev->dev;
+	spin_lock_init(&priv->lock);
+
+	/* Ioremap the registers */
+	priv->reg_base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(priv->reg_base))
+		return PTR_ERR(priv->reg_base);
+
+	/* Get core clock */
+	priv->clk = devm_clk_get(&pdev->dev, "core");
+	if (IS_ERR(priv->clk))
+		dev_warn(&pdev->dev, "cannot get core clock resource\n");
+
+	/* Get sys clock */
+	priv->sys_clk = devm_clk_get(&pdev->dev, "sys");
+	if (IS_ERR(priv->sys_clk))
+		dev_warn(&pdev->dev, "cannot get sys clock resource\n");
+	/*
+	 * Enabling the system clock before the register interface is
+	 * accessed. ISR shouldn't get called with Sys Clock disabled,
+	 * hence exiting probe with an error.
+	 */
+	if (!IS_ERR(priv->sys_clk)) {
+		error = clk_prepare_enable(priv->sys_clk);
+		if (error) {
+			dev_err(&pdev->dev, "cannot enable sys clock\n");
+			return error;
+		}
+	}
+
+	/* Set up raw & hw decoder */
+	error = img_ir_probe_raw(priv);
+	error2 = img_ir_probe_hw(priv);
+	if (error && error2) {
+		if (error == -ENODEV)
+			error = error2;
+		goto err_probe;
+	}
+
+	/* Get the IRQ */
+	priv->irq = irq;
+	error = request_irq(priv->irq, img_ir_isr, 0, "img-ir", priv);
+	if (error) {
+		dev_err(&pdev->dev, "cannot register IRQ %u\n",
+			priv->irq);
+		error = -EIO;
+		goto err_irq;
+	}
+
+	img_ir_ident(priv);
+	img_ir_setup(priv);
+
+	return 0;
+
+err_irq:
+	img_ir_remove_hw(priv);
+	img_ir_remove_raw(priv);
+err_probe:
+	if (!IS_ERR(priv->sys_clk))
+		clk_disable_unprepare(priv->sys_clk);
+	return error;
+}
+
+static void img_ir_remove(struct platform_device *pdev)
+{
+	struct img_ir_priv *priv = platform_get_drvdata(pdev);
+
+	free_irq(priv->irq, priv);
+	img_ir_remove_hw(priv);
+	img_ir_remove_raw(priv);
+
+	if (!IS_ERR(priv->clk))
+		clk_disable_unprepare(priv->clk);
+	if (!IS_ERR(priv->sys_clk))
+		clk_disable_unprepare(priv->sys_clk);
+}
+
+static SIMPLE_DEV_PM_OPS(img_ir_pmops, img_ir_suspend, img_ir_resume);
+
+static const struct of_device_id img_ir_match[] = {
+	{ .compatible = "img,ir-rev1" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, img_ir_match);
+
+static struct platform_driver img_ir_driver = {
+	.driver = {
+		.name = "img-ir",
+		.of_match_table	= img_ir_match,
+		.pm = &img_ir_pmops,
+	},
+	.probe = img_ir_probe,
+	.remove = img_ir_remove,
+};
+
+module_platform_driver(img_ir_driver);
+
+MODULE_AUTHOR("Imagination Technologies Ltd.");
+MODULE_DESCRIPTION("ImgTec IR");
+MODULE_LICENSE("GPL");

linux-7.2.3/drivers/media/rc/img-ir/img-ir-hw.h

@@ -0,0 +1,297 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * ImgTec IR Hardware Decoder found in PowerDown Controller.
+ *
+ * Copyright 2010-2014 Imagination Technologies Ltd.
+ */
+
+#ifndef _IMG_IR_HW_H_
+#define _IMG_IR_HW_H_
+
+#include <linux/kernel.h>
+#include <media/rc-core.h>
+
+/* constants */
+
+#define IMG_IR_CODETYPE_PULSELEN	0x0	/* Sony */
+#define IMG_IR_CODETYPE_PULSEDIST	0x1	/* NEC, Toshiba, Micom, Sharp */
+#define IMG_IR_CODETYPE_BIPHASE		0x2	/* RC-5/6 */
+#define IMG_IR_CODETYPE_2BITPULSEPOS	0x3	/* RC-MM */
+
+
+/* Timing information */
+
+/**
+ * struct img_ir_control - Decoder control settings
+ * @decoden:	Primary decoder enable
+ * @code_type:	Decode type (see IMG_IR_CODETYPE_*)
+ * @hdrtog:	Detect header toggle symbol after leader symbol
+ * @ldrdec:	Don't discard leader if maximum width reached
+ * @decodinpol:	Decoder input polarity (1=active high)
+ * @bitorien:	Bit orientation (1=MSB first)
+ * @d1validsel:	Decoder 2 takes over if it detects valid data
+ * @bitinv:	Bit inversion switch (1=don't invert)
+ * @decodend2:	Secondary decoder enable (no leader symbol)
+ * @bitoriend2:	Bit orientation (1=MSB first)
+ * @bitinvd2:	Secondary decoder bit inversion switch (1=don't invert)
+ */
+struct img_ir_control {
+	unsigned decoden:1;
+	unsigned code_type:2;
+	unsigned hdrtog:1;
+	unsigned ldrdec:1;
+	unsigned decodinpol:1;
+	unsigned bitorien:1;
+	unsigned d1validsel:1;
+	unsigned bitinv:1;
+	unsigned decodend2:1;
+	unsigned bitoriend2:1;
+	unsigned bitinvd2:1;
+};
+
+/**
+ * struct img_ir_timing_range - range of timing values
+ * @min:	Minimum timing value
+ * @max:	Maximum timing value (if < @min, this will be set to @min during
+ *		preprocessing step, so it is normally not explicitly initialised
+ *		and is taken care of by the tolerance)
+ */
+struct img_ir_timing_range {
+	u16 min;
+	u16 max;
+};
+
+/**
+ * struct img_ir_symbol_timing - timing data for a symbol
+ * @pulse:	Timing range for the length of the pulse in this symbol
+ * @space:	Timing range for the length of the space in this symbol
+ */
+struct img_ir_symbol_timing {
+	struct img_ir_timing_range pulse;
+	struct img_ir_timing_range space;
+};
+
+/**
+ * struct img_ir_free_timing - timing data for free time symbol
+ * @minlen:	Minimum number of bits of data
+ * @maxlen:	Maximum number of bits of data
+ * @ft_min:	Minimum free time after message
+ */
+struct img_ir_free_timing {
+	/* measured in bits */
+	u8 minlen;
+	u8 maxlen;
+	u16 ft_min;
+};
+
+/**
+ * struct img_ir_timings - Timing values.
+ * @ldr:	Leader symbol timing data
+ * @s00:	Zero symbol timing data for primary decoder
+ * @s01:	One symbol timing data for primary decoder
+ * @s10:	Zero symbol timing data for secondary (no leader symbol) decoder
+ * @s11:	One symbol timing data for secondary (no leader symbol) decoder
+ * @ft:		Free time symbol timing data
+ */
+struct img_ir_timings {
+	struct img_ir_symbol_timing ldr, s00, s01, s10, s11;
+	struct img_ir_free_timing ft;
+};
+
+/**
+ * struct img_ir_filter - Filter IR events.
+ * @data:	Data to match.
+ * @mask:	Mask of bits to compare.
+ * @minlen:	Additional minimum number of bits.
+ * @maxlen:	Additional maximum number of bits.
+ */
+struct img_ir_filter {
+	u64 data;
+	u64 mask;
+	u8 minlen;
+	u8 maxlen;
+};
+
+/**
+ * struct img_ir_timing_regvals - Calculated timing register values.
+ * @ldr:	Leader symbol timing register value
+ * @s00:	Zero symbol timing register value for primary decoder
+ * @s01:	One symbol timing register value for primary decoder
+ * @s10:	Zero symbol timing register value for secondary decoder
+ * @s11:	One symbol timing register value for secondary decoder
+ * @ft:		Free time symbol timing register value
+ */
+struct img_ir_timing_regvals {
+	u32 ldr, s00, s01, s10, s11, ft;
+};
+
+#define IMG_IR_SCANCODE		0	/* new scancode */
+#define IMG_IR_REPEATCODE	1	/* repeat the previous code */
+
+/**
+ * struct img_ir_scancode_req - Scancode request data.
+ * @protocol:	Protocol code of received message (defaults to
+ *		RC_PROTO_UNKNOWN).
+ * @scancode:	Scan code of received message (must be written by
+ *		handler if IMG_IR_SCANCODE is returned).
+ * @toggle:	Toggle bit (defaults to 0).
+ */
+struct img_ir_scancode_req {
+	enum rc_proto protocol;
+	u32 scancode;
+	u8 toggle;
+};
+
+/**
+ * struct img_ir_decoder - Decoder settings for an IR protocol.
+ * @type:	Protocol types bitmap.
+ * @tolerance:	Timing tolerance as a percentage (default 10%).
+ * @unit:	Unit of timings in nanoseconds (default 1 us).
+ * @timings:	Primary timings
+ * @rtimings:	Additional override timings while waiting for repeats.
+ * @repeat:	Maximum repeat interval (always in milliseconds).
+ * @control:	Control flags.
+ *
+ * @scancode:	Pointer to function to convert the IR data into a scancode (it
+ *		must be safe to execute in interrupt context).
+ *		Returns IMG_IR_SCANCODE to emit new scancode.
+ *		Returns IMG_IR_REPEATCODE to repeat previous code.
+ *		Returns -errno (e.g. -EINVAL) on error.
+ * @filter:	Pointer to function to convert scancode filter to raw hardware
+ *		filter. The minlen and maxlen fields will have been initialised
+ *		to the maximum range.
+ */
+struct img_ir_decoder {
+	/* core description */
+	u64				type;
+	unsigned int			tolerance;
+	unsigned int			unit;
+	struct img_ir_timings		timings;
+	struct img_ir_timings		rtimings;
+	unsigned int			repeat;
+	struct img_ir_control		control;
+
+	/* scancode logic */
+	int (*scancode)(int len, u64 raw, u64 enabled_protocols,
+			struct img_ir_scancode_req *request);
+	int (*filter)(const struct rc_scancode_filter *in,
+		      struct img_ir_filter *out, u64 protocols);
+};
+
+extern struct img_ir_decoder img_ir_nec;
+extern struct img_ir_decoder img_ir_jvc;
+extern struct img_ir_decoder img_ir_sony;
+extern struct img_ir_decoder img_ir_sharp;
+extern struct img_ir_decoder img_ir_sanyo;
+extern struct img_ir_decoder img_ir_rc5;
+extern struct img_ir_decoder img_ir_rc6;
+
+/**
+ * struct img_ir_reg_timings - Reg values for decoder timings at clock rate.
+ * @ctrl:	Processed control register value.
+ * @timings:	Processed primary timings.
+ * @rtimings:	Processed repeat timings.
+ */
+struct img_ir_reg_timings {
+	u32				ctrl;
+	struct img_ir_timing_regvals	timings;
+	struct img_ir_timing_regvals	rtimings;
+};
+
+struct img_ir_priv;
+
+#ifdef CONFIG_IR_IMG_HW
+
+enum img_ir_mode {
+	IMG_IR_M_NORMAL,
+	IMG_IR_M_REPEATING,
+#ifdef CONFIG_PM_SLEEP
+	IMG_IR_M_WAKE,
+#endif
+};
+
+/**
+ * struct img_ir_priv_hw - Private driver data for hardware decoder.
+ * @ct_quirks:		Quirk bits for each code type.
+ * @rdev:		Remote control device
+ * @clk_nb:		Notifier block for clock notify events.
+ * @end_timer:		Timer until repeat timeout.
+ * @suspend_timer:	Timer to re-enable protocol.
+ * @decoder:		Current decoder settings.
+ * @enabled_protocols:	Currently enabled protocols.
+ * @clk_hz:		Current core clock rate in Hz.
+ * @reg_timings:	Timing reg values for decoder at clock rate.
+ * @flags:		IMG_IR_F_*.
+ * @filters:		HW filters (derived from scancode filters).
+ * @mode:		Current decode mode.
+ * @stopping:		Indicates that decoder is being taken down and timers
+ *			should not be restarted.
+ * @suspend_irqen:	Saved IRQ enable mask over suspend.
+ * @quirk_suspend_irq:	Saved IRQ enable mask over quirk suspend timer.
+ */
+struct img_ir_priv_hw {
+	unsigned int			ct_quirks[4];
+	struct rc_dev			*rdev;
+	struct notifier_block		clk_nb;
+	struct timer_list		end_timer;
+	struct timer_list		suspend_timer;
+	const struct img_ir_decoder	*decoder;
+	u64				enabled_protocols;
+	unsigned long			clk_hz;
+	struct img_ir_reg_timings	reg_timings;
+	unsigned int			flags;
+	struct img_ir_filter		filters[RC_FILTER_MAX];
+
+	enum img_ir_mode		mode;
+	bool				stopping;
+	u32				suspend_irqen;
+	u32				quirk_suspend_irq;
+};
+
+static inline bool img_ir_hw_enabled(struct img_ir_priv_hw *hw)
+{
+	return hw->rdev;
+};
+
+void img_ir_isr_hw(struct img_ir_priv *priv, u32 irq_status);
+void img_ir_setup_hw(struct img_ir_priv *priv);
+int img_ir_probe_hw(struct img_ir_priv *priv);
+void img_ir_remove_hw(struct img_ir_priv *priv);
+
+#ifdef CONFIG_PM_SLEEP
+int img_ir_suspend(struct device *dev);
+int img_ir_resume(struct device *dev);
+#else
+#define img_ir_suspend NULL
+#define img_ir_resume NULL
+#endif
+
+#else
+
+struct img_ir_priv_hw {
+};
+
+static inline bool img_ir_hw_enabled(struct img_ir_priv_hw *hw)
+{
+	return false;
+};
+static inline void img_ir_isr_hw(struct img_ir_priv *priv, u32 irq_status)
+{
+}
+static inline void img_ir_setup_hw(struct img_ir_priv *priv)
+{
+}
+static inline int img_ir_probe_hw(struct img_ir_priv *priv)
+{
+	return -ENODEV;
+}
+static inline void img_ir_remove_hw(struct img_ir_priv *priv)
+{
+}
+
+#define img_ir_suspend NULL
+#define img_ir_resume NULL
+
+#endif /* CONFIG_IR_IMG_HW */
+
+#endif /* _IMG_IR_HW_H_ */

linux-7.2.3/drivers/media/rc/img-ir/img-ir-jvc.c

@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ImgTec IR Decoder setup for JVC protocol.
+ *
+ * Copyright 2012-2014 Imagination Technologies Ltd.
+ */
+
+#include "img-ir-hw.h"
+
+/* Convert JVC data to a scancode */
+static int img_ir_jvc_scancode(int len, u64 raw, u64 enabled_protocols,
+			       struct img_ir_scancode_req *request)
+{
+	unsigned int cust, data;
+
+	if (len != 16)
+		return -EINVAL;
+
+	cust = (raw >> 0) & 0xff;
+	data = (raw >> 8) & 0xff;
+
+	request->protocol = RC_PROTO_JVC;
+	request->scancode = cust << 8 | data;
+	return IMG_IR_SCANCODE;
+}
+
+/* Convert JVC scancode to JVC data filter */
+static int img_ir_jvc_filter(const struct rc_scancode_filter *in,
+			     struct img_ir_filter *out, u64 protocols)
+{
+	unsigned int cust, data;
+	unsigned int cust_m, data_m;
+
+	cust   = (in->data >> 8) & 0xff;
+	cust_m = (in->mask >> 8) & 0xff;
+	data   = (in->data >> 0) & 0xff;
+	data_m = (in->mask >> 0) & 0xff;
+
+	out->data = cust   | data << 8;
+	out->mask = cust_m | data_m << 8;
+
+	return 0;
+}
+
+/*
+ * JVC decoder
+ * See also http://www.sbprojects.com/knowledge/ir/jvc.php
+ *          http://support.jvc.com/consumer/support/documents/RemoteCodes.pdf
+ */
+struct img_ir_decoder img_ir_jvc = {
+	.type = RC_PROTO_BIT_JVC,
+	.control = {
+		.decoden = 1,
+		.code_type = IMG_IR_CODETYPE_PULSEDIST,
+	},
+	/* main timings */
+	.unit = 527500, /* 527.5 us */
+	.timings = {
+		/* leader symbol */
+		.ldr = {
+			.pulse = { 16	/* 8.44 ms */ },
+			.space = { 8	/* 4.22 ms */ },
+		},
+		/* 0 symbol */
+		.s00 = {
+			.pulse = { 1	/* 527.5 us +-60 us */ },
+			.space = { 1	/* 527.5 us */ },
+		},
+		/* 1 symbol */
+		.s01 = {
+			.pulse = { 1	/* 527.5 us +-60 us */ },
+			.space = { 3	/* 1.5825 ms +-40 us */ },
+		},
+		/* free time */
+		.ft = {
+			.minlen = 16,
+			.maxlen = 16,
+			.ft_min = 10,	/* 5.275 ms */
+		},
+	},
+	/* scancode logic */
+	.scancode = img_ir_jvc_scancode,
+	.filter = img_ir_jvc_filter,
+};

linux-7.2.3/drivers/media/rc/img-ir/img-ir-nec.c

@@ -0,0 +1,173 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ImgTec IR Decoder setup for NEC protocol.
+ *
+ * Copyright 2010-2014 Imagination Technologies Ltd.
+ */
+
+#include "img-ir-hw.h"
+#include <linux/bitrev.h>
+#include <linux/log2.h>
+
+/* Convert NEC data to a scancode */
+static int img_ir_nec_scancode(int len, u64 raw, u64 enabled_protocols,
+			       struct img_ir_scancode_req *request)
+{
+	unsigned int addr, addr_inv, data, data_inv;
+	/* a repeat code has no data */
+	if (!len)
+		return IMG_IR_REPEATCODE;
+	if (len != 32)
+		return -EINVAL;
+	/* raw encoding: ddDDaaAA */
+	addr     = (raw >>  0) & 0xff;
+	addr_inv = (raw >>  8) & 0xff;
+	data     = (raw >> 16) & 0xff;
+	data_inv = (raw >> 24) & 0xff;
+	if ((data_inv ^ data) != 0xff) {
+		/* 32-bit NEC (used by Apple and TiVo remotes) */
+		/* scan encoding: as transmitted, MSBit = first received bit */
+		request->scancode = bitrev8(addr)     << 24 |
+				bitrev8(addr_inv) << 16 |
+				bitrev8(data)     <<  8 |
+				bitrev8(data_inv);
+		request->protocol = RC_PROTO_NEC32;
+	} else if ((addr_inv ^ addr) != 0xff) {
+		/* Extended NEC */
+		/* scan encoding: AAaaDD */
+		request->scancode = addr     << 16 |
+				addr_inv <<  8 |
+				data;
+		request->protocol = RC_PROTO_NECX;
+	} else {
+		/* Normal NEC */
+		/* scan encoding: AADD */
+		request->scancode = addr << 8 |
+				data;
+		request->protocol = RC_PROTO_NEC;
+	}
+	return IMG_IR_SCANCODE;
+}
+
+/* Convert NEC scancode to NEC data filter */
+static int img_ir_nec_filter(const struct rc_scancode_filter *in,
+			     struct img_ir_filter *out, u64 protocols)
+{
+	unsigned int addr, addr_inv, data, data_inv;
+	unsigned int addr_m, addr_inv_m, data_m, data_inv_m;
+
+	data       = in->data & 0xff;
+	data_m     = in->mask & 0xff;
+
+	protocols &= RC_PROTO_BIT_NEC | RC_PROTO_BIT_NECX | RC_PROTO_BIT_NEC32;
+
+	/*
+	 * If only one bit is set, we were requested to do an exact
+	 * protocol. This should be the case for wakeup filters; for
+	 * normal filters, guess the protocol from the scancode.
+	 */
+	if (!is_power_of_2(protocols)) {
+		if ((in->data | in->mask) & 0xff000000)
+			protocols = RC_PROTO_BIT_NEC32;
+		else if ((in->data | in->mask) & 0x00ff0000)
+			protocols = RC_PROTO_BIT_NECX;
+		else
+			protocols = RC_PROTO_BIT_NEC;
+	}
+
+	if (protocols == RC_PROTO_BIT_NEC32) {
+		/* 32-bit NEC (used by Apple and TiVo remotes) */
+		/* scan encoding: as transmitted, MSBit = first received bit */
+		addr       = bitrev8(in->data >> 24);
+		addr_m     = bitrev8(in->mask >> 24);
+		addr_inv   = bitrev8(in->data >> 16);
+		addr_inv_m = bitrev8(in->mask >> 16);
+		data       = bitrev8(in->data >>  8);
+		data_m     = bitrev8(in->mask >>  8);
+		data_inv   = bitrev8(in->data >>  0);
+		data_inv_m = bitrev8(in->mask >>  0);
+	} else if (protocols == RC_PROTO_BIT_NECX) {
+		/* Extended NEC */
+		/* scan encoding AAaaDD */
+		addr       = (in->data >> 16) & 0xff;
+		addr_m     = (in->mask >> 16) & 0xff;
+		addr_inv   = (in->data >>  8) & 0xff;
+		addr_inv_m = (in->mask >>  8) & 0xff;
+		data_inv   = data ^ 0xff;
+		data_inv_m = data_m;
+	} else {
+		/* Normal NEC */
+		/* scan encoding: AADD */
+		addr       = (in->data >>  8) & 0xff;
+		addr_m     = (in->mask >>  8) & 0xff;
+		addr_inv   = addr ^ 0xff;
+		addr_inv_m = addr_m;
+		data_inv   = data ^ 0xff;
+		data_inv_m = data_m;
+	}
+
+	/* raw encoding: ddDDaaAA */
+	out->data = data_inv << 24 |
+		    data     << 16 |
+		    addr_inv <<  8 |
+		    addr;
+	out->mask = data_inv_m << 24 |
+		    data_m     << 16 |
+		    addr_inv_m <<  8 |
+		    addr_m;
+	return 0;
+}
+
+/*
+ * NEC decoder
+ * See also http://www.sbprojects.com/knowledge/ir/nec.php
+ *        http://wiki.altium.com/display/ADOH/NEC+Infrared+Transmission+Protocol
+ */
+struct img_ir_decoder img_ir_nec = {
+	.type = RC_PROTO_BIT_NEC | RC_PROTO_BIT_NECX | RC_PROTO_BIT_NEC32,
+	.control = {
+		.decoden = 1,
+		.code_type = IMG_IR_CODETYPE_PULSEDIST,
+	},
+	/* main timings */
+	.unit = 562500, /* 562.5 us */
+	.timings = {
+		/* leader symbol */
+		.ldr = {
+			.pulse = { 16	/* 9ms */ },
+			.space = { 8	/* 4.5ms */ },
+		},
+		/* 0 symbol */
+		.s00 = {
+			.pulse = { 1	/* 562.5 us */ },
+			.space = { 1	/* 562.5 us */ },
+		},
+		/* 1 symbol */
+		.s01 = {
+			.pulse = { 1	/* 562.5 us */ },
+			.space = { 3	/* 1687.5 us */ },
+		},
+		/* free time */
+		.ft = {
+			.minlen = 32,
+			.maxlen = 32,
+			.ft_min = 10,	/* 5.625 ms */
+		},
+	},
+	/* repeat codes */
+	.repeat = 108,			/* 108 ms */
+	.rtimings = {
+		/* leader symbol */
+		.ldr = {
+			.space = { 4	/* 2.25 ms */ },
+		},
+		/* free time */
+		.ft = {
+			.minlen = 0,	/* repeat code has no data */
+			.maxlen = 0,
+		},
+	},
+	/* scancode logic */
+	.scancode = img_ir_nec_scancode,
+	.filter = img_ir_nec_filter,
+};

linux-7.2.3/drivers/media/rc/img-ir/img-ir-raw.c

@@ -0,0 +1,152 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ImgTec IR Raw Decoder found in PowerDown Controller.
+ *
+ * Copyright 2010-2014 Imagination Technologies Ltd.
+ *
+ * This ties into the input subsystem using the RC-core in raw mode. Raw IR
+ * signal edges are reported and decoded by generic software decoders.
+ */
+
+#include <linux/spinlock.h>
+#include <media/rc-core.h>
+#include "img-ir.h"
+
+#define ECHO_TIMEOUT_MS 150	/* ms between echos */
+
+/* must be called with priv->lock held */
+static void img_ir_refresh_raw(struct img_ir_priv *priv, u32 irq_status)
+{
+	struct img_ir_priv_raw *raw = &priv->raw;
+	struct rc_dev *rc_dev = priv->raw.rdev;
+	int multiple;
+	u32 ir_status;
+
+	/* find whether both rise and fall was detected */
+	multiple = ((irq_status & IMG_IR_IRQ_EDGE) == IMG_IR_IRQ_EDGE);
+	/*
+	 * If so, we need to see if the level has actually changed.
+	 * If it's just noise that we didn't have time to process,
+	 * there's no point reporting it.
+	 */
+	ir_status = img_ir_read(priv, IMG_IR_STATUS) & IMG_IR_IRRXD;
+	if (multiple && ir_status == raw->last_status)
+		return;
+	raw->last_status = ir_status;
+
+	/* report the edge to the IR raw decoders */
+	if (ir_status) /* low */
+		ir_raw_event_store_edge(rc_dev, false);
+	else /* high */
+		ir_raw_event_store_edge(rc_dev, true);
+	ir_raw_event_handle(rc_dev);
+}
+
+/* called with priv->lock held */
+void img_ir_isr_raw(struct img_ir_priv *priv, u32 irq_status)
+{
+	struct img_ir_priv_raw *raw = &priv->raw;
+
+	/* check not removing */
+	if (!raw->rdev)
+		return;
+
+	img_ir_refresh_raw(priv, irq_status);
+
+	/* start / push back the echo timer */
+	mod_timer(&raw->timer, jiffies + msecs_to_jiffies(ECHO_TIMEOUT_MS));
+}
+
+/*
+ * Echo timer callback function.
+ * The raw decoders expect to get a final sample even if there are no edges, in
+ * order to be assured of the final space. If there are no edges for a certain
+ * time we use this timer to emit a final sample to satisfy them.
+ */
+static void img_ir_echo_timer(struct timer_list *t)
+{
+	struct img_ir_priv *priv = timer_container_of(priv, t, raw.timer);
+
+	spin_lock_irq(&priv->lock);
+
+	/* check not removing */
+	if (priv->raw.rdev)
+		/*
+		 * It's safe to pass irq_status=0 since it's only used to check
+		 * for double edges.
+		 */
+		img_ir_refresh_raw(priv, 0);
+
+	spin_unlock_irq(&priv->lock);
+}
+
+void img_ir_setup_raw(struct img_ir_priv *priv)
+{
+	u32 irq_en;
+
+	if (!priv->raw.rdev)
+		return;
+
+	/* clear and enable edge interrupts */
+	spin_lock_irq(&priv->lock);
+	irq_en = img_ir_read(priv, IMG_IR_IRQ_ENABLE);
+	irq_en |= IMG_IR_IRQ_EDGE;
+	img_ir_write(priv, IMG_IR_IRQ_CLEAR, IMG_IR_IRQ_EDGE);
+	img_ir_write(priv, IMG_IR_IRQ_ENABLE, irq_en);
+	spin_unlock_irq(&priv->lock);
+}
+
+int img_ir_probe_raw(struct img_ir_priv *priv)
+{
+	struct img_ir_priv_raw *raw = &priv->raw;
+	struct rc_dev *rdev;
+	int error;
+
+	/* Set up the echo timer */
+	timer_setup(&raw->timer, img_ir_echo_timer, 0);
+
+	/* Allocate raw decoder */
+	raw->rdev = rdev = rc_allocate_device(RC_DRIVER_IR_RAW);
+	if (!rdev) {
+		dev_err(priv->dev, "cannot allocate raw input device\n");
+		return -ENOMEM;
+	}
+	rdev->priv = priv;
+	rdev->map_name = RC_MAP_EMPTY;
+	rdev->device_name = "IMG Infrared Decoder Raw";
+
+	/* Register raw decoder */
+	error = rc_register_device(rdev);
+	if (error) {
+		dev_err(priv->dev, "failed to register raw IR input device\n");
+		rc_free_device(rdev);
+		raw->rdev = NULL;
+		return error;
+	}
+
+	return 0;
+}
+
+void img_ir_remove_raw(struct img_ir_priv *priv)
+{
+	struct img_ir_priv_raw *raw = &priv->raw;
+	struct rc_dev *rdev = raw->rdev;
+	u32 irq_en;
+
+	if (!rdev)
+		return;
+
+	rc_unregister_device(rdev);
+	/* switch off and disable raw (edge) interrupts */
+	spin_lock_irq(&priv->lock);
+	raw->rdev = NULL;
+	irq_en = img_ir_read(priv, IMG_IR_IRQ_ENABLE);
+	irq_en &= ~IMG_IR_IRQ_EDGE;
+	img_ir_write(priv, IMG_IR_IRQ_ENABLE, irq_en);
+	img_ir_write(priv, IMG_IR_IRQ_CLEAR, IMG_IR_IRQ_EDGE);
+	spin_unlock_irq(&priv->lock);
+
+	rc_free_device(rdev);
+
+	timer_delete_sync(&raw->timer);
+}

linux-7.2.3/drivers/media/rc/img-ir/img-ir-raw.h

@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * ImgTec IR Raw Decoder found in PowerDown Controller.
+ *
+ * Copyright 2010-2014 Imagination Technologies Ltd.
+ */
+
+#ifndef _IMG_IR_RAW_H_
+#define _IMG_IR_RAW_H_
+
+struct img_ir_priv;
+
+#ifdef CONFIG_IR_IMG_RAW
+
+/**
+ * struct img_ir_priv_raw - Private driver data for raw decoder.
+ * @rdev:		Raw remote control device
+ * @timer:		Timer to echo samples to keep soft decoders happy.
+ * @last_status:	Last raw status bits.
+ */
+struct img_ir_priv_raw {
+	struct rc_dev		*rdev;
+	struct timer_list	timer;
+	u32			last_status;
+};
+
+static inline bool img_ir_raw_enabled(struct img_ir_priv_raw *raw)
+{
+	return raw->rdev;
+};
+
+void img_ir_isr_raw(struct img_ir_priv *priv, u32 irq_status);
+void img_ir_setup_raw(struct img_ir_priv *priv);
+int img_ir_probe_raw(struct img_ir_priv *priv);
+void img_ir_remove_raw(struct img_ir_priv *priv);
+
+#else
+
+struct img_ir_priv_raw {
+};
+static inline bool img_ir_raw_enabled(struct img_ir_priv_raw *raw)
+{
+	return false;
+};
+static inline void img_ir_isr_raw(struct img_ir_priv *priv, u32 irq_status)
+{
+}
+static inline void img_ir_setup_raw(struct img_ir_priv *priv)
+{
+}
+static inline int img_ir_probe_raw(struct img_ir_priv *priv)
+{
+	return -ENODEV;
+}
+static inline void img_ir_remove_raw(struct img_ir_priv *priv)
+{
+}
+
+#endif /* CONFIG_IR_IMG_RAW */
+
+#endif /* _IMG_IR_RAW_H_ */

linux-7.2.3/drivers/media/rc/img-ir/img-ir-rc5.c

@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ImgTec IR Decoder setup for Philips RC-5 protocol.
+ *
+ * Copyright 2012-2014 Imagination Technologies Ltd.
+ */
+
+#include "img-ir-hw.h"
+
+/* Convert RC5 data to a scancode */
+static int img_ir_rc5_scancode(int len, u64 raw, u64 enabled_protocols,
+				struct img_ir_scancode_req *request)
+{
+	unsigned int addr, cmd, tgl, start;
+
+	/* Quirk in the decoder shifts everything by 2 to the left. */
+	raw   >>= 2;
+
+	start	=  (raw >> 13)	& 0x01;
+	tgl	=  (raw >> 11)	& 0x01;
+	addr	=  (raw >>  6)	& 0x1f;
+	cmd	=   raw		& 0x3f;
+	/*
+	 * 12th bit is used to extend the command in extended RC5 and has
+	 * no effect on standard RC5.
+	 */
+	cmd	+= ((raw >> 12) & 0x01) ? 0 : 0x40;
+
+	if (!start)
+		return -EINVAL;
+
+	request->protocol = RC_PROTO_RC5;
+	request->scancode = addr << 8 | cmd;
+	request->toggle   = tgl;
+	return IMG_IR_SCANCODE;
+}
+
+/* Convert RC5 scancode to RC5 data filter */
+static int img_ir_rc5_filter(const struct rc_scancode_filter *in,
+				 struct img_ir_filter *out, u64 protocols)
+{
+	/* Not supported by the hw. */
+	return -EINVAL;
+}
+
+/*
+ * RC-5 decoder
+ * see http://www.sbprojects.com/knowledge/ir/rc5.php
+ */
+struct img_ir_decoder img_ir_rc5 = {
+	.type      = RC_PROTO_BIT_RC5,
+	.control   = {
+		.bitoriend2	= 1,
+		.code_type	= IMG_IR_CODETYPE_BIPHASE,
+		.decodend2	= 1,
+	},
+	/* main timings */
+	.tolerance	= 16,
+	.unit		= 888888, /* 1/36k*32=888.888microseconds */
+	.timings	= {
+		/* 10 symbol */
+		.s10 = {
+			.pulse	= { 1 },
+			.space	= { 1 },
+		},
+
+		/* 11 symbol */
+		.s11 = {
+			.pulse	= { 1 },
+			.space	= { 1 },
+		},
+
+		/* free time */
+		.ft  = {
+			.minlen = 14,
+			.maxlen = 14,
+			.ft_min = 5,
+		},
+	},
+
+	/* scancode logic */
+	.scancode	= img_ir_rc5_scancode,
+	.filter		= img_ir_rc5_filter,
+};

linux-7.2.3/drivers/media/rc/img-ir/img-ir-rc6.c

@@ -0,0 +1,113 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ImgTec IR Decoder setup for Philips RC-6 protocol.
+ *
+ * Copyright 2012-2014 Imagination Technologies Ltd.
+ */
+
+#include "img-ir-hw.h"
+
+/* Convert RC6 data to a scancode */
+static int img_ir_rc6_scancode(int len, u64 raw, u64 enabled_protocols,
+				struct img_ir_scancode_req *request)
+{
+	unsigned int addr, cmd, mode, trl1, trl2;
+
+	/*
+	 * Due to a side effect of the decoder handling the double length
+	 * Trailer bit, the header information is a bit scrambled, and the
+	 * raw data is shifted incorrectly.
+	 * This workaround effectively recovers the header bits.
+	 *
+	 * The Header field should look like this:
+	 *
+	 * StartBit ModeBit2 ModeBit1 ModeBit0 TrailerBit
+	 *
+	 * But what we get is:
+	 *
+	 * ModeBit2 ModeBit1 ModeBit0 TrailerBit1 TrailerBit2
+	 *
+	 * The start bit is not important to recover the scancode.
+	 */
+
+	raw	>>= 27;
+
+	trl1	= (raw >>  17)	& 0x01;
+	trl2	= (raw >>  16)	& 0x01;
+
+	mode	= (raw >>  18)	& 0x07;
+	addr	= (raw >>   8)	& 0xff;
+	cmd	=  raw		& 0xff;
+
+	/*
+	 * Due to the above explained irregularity the trailer bits cannot
+	 * have the same value.
+	 */
+	if (trl1 == trl2)
+		return -EINVAL;
+
+	/* Only mode 0 supported for now */
+	if (mode)
+		return -EINVAL;
+
+	request->protocol = RC_PROTO_RC6_0;
+	request->scancode = addr << 8 | cmd;
+	request->toggle	  = trl2;
+	return IMG_IR_SCANCODE;
+}
+
+/* Convert RC6 scancode to RC6 data filter */
+static int img_ir_rc6_filter(const struct rc_scancode_filter *in,
+				 struct img_ir_filter *out, u64 protocols)
+{
+	/* Not supported by the hw. */
+	return -EINVAL;
+}
+
+/*
+ * RC-6 decoder
+ * see http://www.sbprojects.com/knowledge/ir/rc6.php
+ */
+struct img_ir_decoder img_ir_rc6 = {
+	.type		= RC_PROTO_BIT_RC6_0,
+	.control	= {
+		.bitorien	= 1,
+		.code_type	= IMG_IR_CODETYPE_BIPHASE,
+		.decoden	= 1,
+		.decodinpol	= 1,
+	},
+	/* main timings */
+	.tolerance	= 20,
+	/*
+	 * Due to a quirk in the img-ir decoder, default header values do
+	 * not work, the values described below were extracted from
+	 * successful RTL test cases.
+	 */
+	.timings	= {
+		/* leader symbol */
+		.ldr = {
+			.pulse	= { 650 },
+			.space	= { 660 },
+		},
+		/* 0 symbol */
+		.s00 = {
+			.pulse	= { 370 },
+			.space	= { 370 },
+		},
+		/* 01 symbol */
+		.s01 = {
+			.pulse	= { 370 },
+			.space	= { 370 },
+		},
+		/* free time */
+		.ft  = {
+			.minlen = 21,
+			.maxlen = 21,
+			.ft_min = 2666,	/* 2.666 ms */
+		},
+	},
+
+	/* scancode logic */
+	.scancode	= img_ir_rc6_scancode,
+	.filter		= img_ir_rc6_filter,
+};

linux-7.2.3/drivers/media/rc/img-ir/img-ir-sanyo.c

@@ -0,0 +1,125 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ImgTec IR Decoder setup for Sanyo protocol.
+ *
+ * Copyright 2012-2014 Imagination Technologies Ltd.
+ *
+ * From ir-sanyo-decoder.c:
+ *
+ * This protocol uses the NEC protocol timings. However, data is formatted as:
+ *	13 bits Custom Code
+ *	13 bits NOT(Custom Code)
+ *	8 bits Key data
+ *	8 bits NOT(Key data)
+ *
+ * According with LIRC, this protocol is used on Sanyo, Aiwa and Chinon
+ * Information for this protocol is available at the Sanyo LC7461 datasheet.
+ */
+
+#include "img-ir-hw.h"
+
+/* Convert Sanyo data to a scancode */
+static int img_ir_sanyo_scancode(int len, u64 raw, u64 enabled_protocols,
+				 struct img_ir_scancode_req *request)
+{
+	unsigned int addr, addr_inv, data, data_inv;
+	/* a repeat code has no data */
+	if (!len)
+		return IMG_IR_REPEATCODE;
+	if (len != 42)
+		return -EINVAL;
+	addr     = (raw >>  0) & 0x1fff;
+	addr_inv = (raw >> 13) & 0x1fff;
+	data     = (raw >> 26) & 0xff;
+	data_inv = (raw >> 34) & 0xff;
+	/* Validate data */
+	if ((data_inv ^ data) != 0xff)
+		return -EINVAL;
+	/* Validate address */
+	if ((addr_inv ^ addr) != 0x1fff)
+		return -EINVAL;
+
+	/* Normal Sanyo */
+	request->protocol = RC_PROTO_SANYO;
+	request->scancode = addr << 8 | data;
+	return IMG_IR_SCANCODE;
+}
+
+/* Convert Sanyo scancode to Sanyo data filter */
+static int img_ir_sanyo_filter(const struct rc_scancode_filter *in,
+			       struct img_ir_filter *out, u64 protocols)
+{
+	unsigned int addr, addr_inv, data, data_inv;
+	unsigned int addr_m, data_m;
+
+	data = in->data & 0xff;
+	data_m = in->mask & 0xff;
+	data_inv = data ^ 0xff;
+
+	if (in->data & 0xff700000)
+		return -EINVAL;
+
+	addr       = (in->data >> 8) & 0x1fff;
+	addr_m     = (in->mask >> 8) & 0x1fff;
+	addr_inv   = addr ^ 0x1fff;
+
+	out->data = (u64)data_inv << 34 |
+		    (u64)data     << 26 |
+			 addr_inv << 13 |
+			 addr;
+	out->mask = (u64)data_m << 34 |
+		    (u64)data_m << 26 |
+			 addr_m << 13 |
+			 addr_m;
+	return 0;
+}
+
+/* Sanyo decoder */
+struct img_ir_decoder img_ir_sanyo = {
+	.type = RC_PROTO_BIT_SANYO,
+	.control = {
+		.decoden = 1,
+		.code_type = IMG_IR_CODETYPE_PULSEDIST,
+	},
+	/* main timings */
+	.unit = 562500, /* 562.5 us */
+	.timings = {
+		/* leader symbol */
+		.ldr = {
+			.pulse = { 16	/* 9ms */ },
+			.space = { 8	/* 4.5ms */ },
+		},
+		/* 0 symbol */
+		.s00 = {
+			.pulse = { 1	/* 562.5 us */ },
+			.space = { 1	/* 562.5 us */ },
+		},
+		/* 1 symbol */
+		.s01 = {
+			.pulse = { 1	/* 562.5 us */ },
+			.space = { 3	/* 1687.5 us */ },
+		},
+		/* free time */
+		.ft = {
+			.minlen = 42,
+			.maxlen = 42,
+			.ft_min = 10,	/* 5.625 ms */
+		},
+	},
+	/* repeat codes */
+	.repeat = 108,			/* 108 ms */
+	.rtimings = {
+		/* leader symbol */
+		.ldr = {
+			.space = { 4	/* 2.25 ms */ },
+		},
+		/* free time */
+		.ft = {
+			.minlen = 0,	/* repeat code has no data */
+			.maxlen = 0,
+		},
+	},
+	/* scancode logic */
+	.scancode = img_ir_sanyo_scancode,
+	.filter = img_ir_sanyo_filter,
+};

linux-7.2.3/drivers/media/rc/img-ir/img-ir-sharp.c

@@ -0,0 +1,102 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ImgTec IR Decoder setup for Sharp protocol.
+ *
+ * Copyright 2012-2014 Imagination Technologies Ltd.
+ */
+
+#include "img-ir-hw.h"
+
+/* Convert Sharp data to a scancode */
+static int img_ir_sharp_scancode(int len, u64 raw, u64 enabled_protocols,
+				 struct img_ir_scancode_req *request)
+{
+	unsigned int addr, cmd, exp, chk;
+
+	if (len != 15)
+		return -EINVAL;
+
+	addr = (raw >>   0) & 0x1f;
+	cmd  = (raw >>   5) & 0xff;
+	exp  = (raw >>  13) &  0x1;
+	chk  = (raw >>  14) &  0x1;
+
+	/* validate data */
+	if (!exp)
+		return -EINVAL;
+	if (chk)
+		/* probably the second half of the message */
+		return -EINVAL;
+
+	request->protocol = RC_PROTO_SHARP;
+	request->scancode = addr << 8 | cmd;
+	return IMG_IR_SCANCODE;
+}
+
+/* Convert Sharp scancode to Sharp data filter */
+static int img_ir_sharp_filter(const struct rc_scancode_filter *in,
+			       struct img_ir_filter *out, u64 protocols)
+{
+	unsigned int addr, cmd, exp = 0, chk = 0;
+	unsigned int addr_m, cmd_m, exp_m = 0, chk_m = 0;
+
+	addr   = (in->data >> 8) & 0x1f;
+	addr_m = (in->mask >> 8) & 0x1f;
+	cmd    = (in->data >> 0) & 0xff;
+	cmd_m  = (in->mask >> 0) & 0xff;
+	if (cmd_m) {
+		/* if filtering commands, we can only match the first part */
+		exp   = 1;
+		exp_m = 1;
+		chk   = 0;
+		chk_m = 1;
+	}
+
+	out->data = addr        |
+		    cmd   <<  5 |
+		    exp   << 13 |
+		    chk   << 14;
+	out->mask = addr_m      |
+		    cmd_m <<  5 |
+		    exp_m << 13 |
+		    chk_m << 14;
+
+	return 0;
+}
+
+/*
+ * Sharp decoder
+ * See also http://www.sbprojects.com/knowledge/ir/sharp.php
+ */
+struct img_ir_decoder img_ir_sharp = {
+	.type = RC_PROTO_BIT_SHARP,
+	.control = {
+		.decoden = 0,
+		.decodend2 = 1,
+		.code_type = IMG_IR_CODETYPE_PULSEDIST,
+		.d1validsel = 1,
+	},
+	/* main timings */
+	.tolerance = 20,	/* 20% */
+	.timings = {
+		/* 0 symbol */
+		.s10 = {
+			.pulse = { 320	/* 320 us */ },
+			.space = { 680	/* 1 ms period */ },
+		},
+		/* 1 symbol */
+		.s11 = {
+			.pulse = { 320	/* 320 us */ },
+			.space = { 1680	/* 2 ms period */ },
+		},
+		/* free time */
+		.ft = {
+			.minlen = 15,
+			.maxlen = 15,
+			.ft_min = 5000,	/* 5 ms */
+		},
+	},
+	/* scancode logic */
+	.scancode = img_ir_sharp_scancode,
+	.filter = img_ir_sharp_filter,
+};

linux-7.2.3/drivers/media/rc/img-ir/img-ir-sony.c

@@ -0,0 +1,161 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ImgTec IR Decoder setup for Sony (SIRC) protocol.
+ *
+ * Copyright 2012-2014 Imagination Technologies Ltd.
+ */
+
+#include "img-ir-hw.h"
+
+/* Convert Sony data to a scancode */
+static int img_ir_sony_scancode(int len, u64 raw, u64 enabled_protocols,
+				struct img_ir_scancode_req *request)
+{
+	unsigned int dev, subdev, func;
+
+	switch (len) {
+	case 12:
+		if (!(enabled_protocols & RC_PROTO_BIT_SONY12))
+			return -EINVAL;
+		func   = raw & 0x7f;	/* first 7 bits */
+		raw    >>= 7;
+		dev    = raw & 0x1f;	/* next 5 bits */
+		subdev = 0;
+		request->protocol = RC_PROTO_SONY12;
+		break;
+	case 15:
+		if (!(enabled_protocols & RC_PROTO_BIT_SONY15))
+			return -EINVAL;
+		func   = raw & 0x7f;	/* first 7 bits */
+		raw    >>= 7;
+		dev    = raw & 0xff;	/* next 8 bits */
+		subdev = 0;
+		request->protocol = RC_PROTO_SONY15;
+		break;
+	case 20:
+		if (!(enabled_protocols & RC_PROTO_BIT_SONY20))
+			return -EINVAL;
+		func   = raw & 0x7f;	/* first 7 bits */
+		raw    >>= 7;
+		dev    = raw & 0x1f;	/* next 5 bits */
+		raw    >>= 5;
+		subdev = raw & 0xff;	/* next 8 bits */
+		request->protocol = RC_PROTO_SONY20;
+		break;
+	default:
+		return -EINVAL;
+	}
+	request->scancode = dev << 16 | subdev << 8 | func;
+	return IMG_IR_SCANCODE;
+}
+
+/* Convert NEC scancode to NEC data filter */
+static int img_ir_sony_filter(const struct rc_scancode_filter *in,
+			      struct img_ir_filter *out, u64 protocols)
+{
+	unsigned int dev, subdev, func;
+	unsigned int dev_m, subdev_m, func_m;
+	unsigned int len = 0;
+
+	dev      = (in->data >> 16) & 0xff;
+	dev_m    = (in->mask >> 16) & 0xff;
+	subdev   = (in->data >> 8)  & 0xff;
+	subdev_m = (in->mask >> 8)  & 0xff;
+	func     = (in->data >> 0)  & 0x7f;
+	func_m   = (in->mask >> 0)  & 0x7f;
+
+	protocols &= RC_PROTO_BIT_SONY12 | RC_PROTO_BIT_SONY15 |
+							RC_PROTO_BIT_SONY20;
+
+	/*
+	 * If only one bit is set, we were requested to do an exact
+	 * protocol. This should be the case for wakeup filters; for
+	 * normal filters, guess the protocol from the scancode.
+	 */
+	if (!is_power_of_2(protocols)) {
+		if (subdev & subdev_m)
+			protocols = RC_PROTO_BIT_SONY20;
+		else if (dev & dev_m & 0xe0)
+			protocols = RC_PROTO_BIT_SONY15;
+		else
+			protocols = RC_PROTO_BIT_SONY12;
+	}
+
+	if (protocols == RC_PROTO_BIT_SONY20) {
+		/* can't encode subdev and higher device bits */
+		if (dev & dev_m & 0xe0)
+			return -EINVAL;
+		len = 20;
+		dev_m &= 0x1f;
+	} else if (protocols == RC_PROTO_BIT_SONY15) {
+		len = 15;
+		subdev_m = 0;
+	} else {
+		/*
+		 * The hardware mask cannot distinguish high device bits and low
+		 * extended bits, so logically AND those bits of the masks
+		 * together.
+		 */
+		subdev_m &= (dev_m >> 5) | 0xf8;
+		dev_m &= 0x1f;
+	}
+
+	/* ensure there aren't any bits straying between fields */
+	dev &= dev_m;
+	subdev &= subdev_m;
+
+	/* write the hardware filter */
+	out->data = func          |
+		    dev      << 7 |
+		    subdev   << 15;
+	out->mask = func_m        |
+		    dev_m    << 7 |
+		    subdev_m << 15;
+
+	if (len) {
+		out->minlen = len;
+		out->maxlen = len;
+	}
+	return 0;
+}
+
+/*
+ * Sony SIRC decoder
+ * See also http://www.sbprojects.com/knowledge/ir/sirc.php
+ *          http://picprojects.org.uk/projects/sirc/sonysirc.pdf
+ */
+struct img_ir_decoder img_ir_sony = {
+	.type = RC_PROTO_BIT_SONY12 | RC_PROTO_BIT_SONY15 | RC_PROTO_BIT_SONY20,
+	.control = {
+		.decoden = 1,
+		.code_type = IMG_IR_CODETYPE_PULSELEN,
+	},
+	/* main timings */
+	.unit = 600000, /* 600 us */
+	.timings = {
+		/* leader symbol */
+		.ldr = {
+			.pulse = { 4	/* 2.4 ms */ },
+			.space = { 1	/* 600 us */ },
+		},
+		/* 0 symbol */
+		.s00 = {
+			.pulse = { 1	/* 600 us */ },
+			.space = { 1	/* 600 us */ },
+		},
+		/* 1 symbol */
+		.s01 = {
+			.pulse = { 2	/* 1.2 ms */ },
+			.space = { 1	/* 600 us */ },
+		},
+		/* free time */
+		.ft = {
+			.minlen = 12,
+			.maxlen = 20,
+			.ft_min = 10,	/* 6 ms */
+		},
+	},
+	/* scancode logic */
+	.scancode = img_ir_sony_scancode,
+	.filter = img_ir_sony_filter,
+};

linux-7.2.3/drivers/media/rc/img-ir/img-ir.h

@@ -0,0 +1,169 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * ImgTec IR Decoder found in PowerDown Controller.
+ *
+ * Copyright 2010-2014 Imagination Technologies Ltd.
+ */
+
+#ifndef _IMG_IR_H_
+#define _IMG_IR_H_
+
+#include <linux/io.h>
+#include <linux/spinlock.h>
+
+#include "img-ir-raw.h"
+#include "img-ir-hw.h"
+
+/* registers */
+
+/* relative to the start of the IR block of registers */
+#define IMG_IR_CONTROL		0x00
+#define IMG_IR_STATUS		0x04
+#define IMG_IR_DATA_LW		0x08
+#define IMG_IR_DATA_UP		0x0c
+#define IMG_IR_LEAD_SYMB_TIMING	0x10
+#define IMG_IR_S00_SYMB_TIMING	0x14
+#define IMG_IR_S01_SYMB_TIMING	0x18
+#define IMG_IR_S10_SYMB_TIMING	0x1c
+#define IMG_IR_S11_SYMB_TIMING	0x20
+#define IMG_IR_FREE_SYMB_TIMING	0x24
+#define IMG_IR_POW_MOD_PARAMS	0x28
+#define IMG_IR_POW_MOD_ENABLE	0x2c
+#define IMG_IR_IRQ_MSG_DATA_LW	0x30
+#define IMG_IR_IRQ_MSG_DATA_UP	0x34
+#define IMG_IR_IRQ_MSG_MASK_LW	0x38
+#define IMG_IR_IRQ_MSG_MASK_UP	0x3c
+#define IMG_IR_IRQ_ENABLE	0x40
+#define IMG_IR_IRQ_STATUS	0x44
+#define IMG_IR_IRQ_CLEAR	0x48
+#define IMG_IR_IRCORE_ID	0xf0
+#define IMG_IR_CORE_REV		0xf4
+#define IMG_IR_CORE_DES1	0xf8
+#define IMG_IR_CORE_DES2	0xfc
+
+
+/* field masks */
+
+/* IMG_IR_CONTROL */
+#define IMG_IR_DECODEN		0x40000000
+#define IMG_IR_CODETYPE		0x30000000
+#define IMG_IR_CODETYPE_SHIFT		28
+#define IMG_IR_HDRTOG		0x08000000
+#define IMG_IR_LDRDEC		0x04000000
+#define IMG_IR_DECODINPOL	0x02000000	/* active high */
+#define IMG_IR_BITORIEN		0x01000000	/* MSB first */
+#define IMG_IR_D1VALIDSEL	0x00008000
+#define IMG_IR_BITINV		0x00000040	/* don't invert */
+#define IMG_IR_DECODEND2	0x00000010
+#define IMG_IR_BITORIEND2	0x00000002	/* MSB first */
+#define IMG_IR_BITINVD2		0x00000001	/* don't invert */
+
+/* IMG_IR_STATUS */
+#define IMG_IR_RXDVALD2		0x00001000
+#define IMG_IR_IRRXD		0x00000400
+#define IMG_IR_TOGSTATE		0x00000200
+#define IMG_IR_RXDVAL		0x00000040
+#define IMG_IR_RXDLEN		0x0000003f
+#define IMG_IR_RXDLEN_SHIFT		0
+
+/* IMG_IR_LEAD_SYMB_TIMING, IMG_IR_Sxx_SYMB_TIMING */
+#define IMG_IR_PD_MAX		0xff000000
+#define IMG_IR_PD_MAX_SHIFT		24
+#define IMG_IR_PD_MIN		0x00ff0000
+#define IMG_IR_PD_MIN_SHIFT		16
+#define IMG_IR_W_MAX		0x0000ff00
+#define IMG_IR_W_MAX_SHIFT		8
+#define IMG_IR_W_MIN		0x000000ff
+#define IMG_IR_W_MIN_SHIFT		0
+
+/* IMG_IR_FREE_SYMB_TIMING */
+#define IMG_IR_MAXLEN		0x0007e000
+#define IMG_IR_MAXLEN_SHIFT		13
+#define IMG_IR_MINLEN		0x00001f00
+#define IMG_IR_MINLEN_SHIFT		8
+#define IMG_IR_FT_MIN		0x000000ff
+#define IMG_IR_FT_MIN_SHIFT		0
+
+/* IMG_IR_POW_MOD_PARAMS */
+#define IMG_IR_PERIOD_LEN	0x3f000000
+#define IMG_IR_PERIOD_LEN_SHIFT		24
+#define IMG_IR_PERIOD_DUTY	0x003f0000
+#define IMG_IR_PERIOD_DUTY_SHIFT	16
+#define IMG_IR_STABLE_STOP	0x00003f00
+#define IMG_IR_STABLE_STOP_SHIFT	8
+#define IMG_IR_STABLE_START	0x0000003f
+#define IMG_IR_STABLE_START_SHIFT	0
+
+/* IMG_IR_POW_MOD_ENABLE */
+#define IMG_IR_POWER_OUT_EN	0x00000002
+#define IMG_IR_POWER_MOD_EN	0x00000001
+
+/* IMG_IR_IRQ_ENABLE, IMG_IR_IRQ_STATUS, IMG_IR_IRQ_CLEAR */
+#define IMG_IR_IRQ_DEC2_ERR	0x00000080
+#define IMG_IR_IRQ_DEC_ERR	0x00000040
+#define IMG_IR_IRQ_ACT_LEVEL	0x00000020
+#define IMG_IR_IRQ_FALL_EDGE	0x00000010
+#define IMG_IR_IRQ_RISE_EDGE	0x00000008
+#define IMG_IR_IRQ_DATA_MATCH	0x00000004
+#define IMG_IR_IRQ_DATA2_VALID	0x00000002
+#define IMG_IR_IRQ_DATA_VALID	0x00000001
+#define IMG_IR_IRQ_ALL		0x000000ff
+#define IMG_IR_IRQ_EDGE		(IMG_IR_IRQ_FALL_EDGE | IMG_IR_IRQ_RISE_EDGE)
+
+/* IMG_IR_CORE_ID */
+#define IMG_IR_CORE_ID		0x00ff0000
+#define IMG_IR_CORE_ID_SHIFT		16
+#define IMG_IR_CORE_CONFIG	0x0000ffff
+#define IMG_IR_CORE_CONFIG_SHIFT	0
+
+/* IMG_IR_CORE_REV */
+#define IMG_IR_DESIGNER		0xff000000
+#define IMG_IR_DESIGNER_SHIFT		24
+#define IMG_IR_MAJOR_REV	0x00ff0000
+#define IMG_IR_MAJOR_REV_SHIFT		16
+#define IMG_IR_MINOR_REV	0x0000ff00
+#define IMG_IR_MINOR_REV_SHIFT		8
+#define IMG_IR_MAINT_REV	0x000000ff
+#define IMG_IR_MAINT_REV_SHIFT		0
+
+struct device;
+struct clk;
+
+/**
+ * struct img_ir_priv - Private driver data.
+ * @dev:		Platform device.
+ * @irq:		IRQ number.
+ * @clk:		Input clock.
+ * @sys_clk:		System clock.
+ * @reg_base:		Iomem base address of IR register block.
+ * @lock:		Protects IR registers and variables in this struct.
+ * @raw:		Driver data for raw decoder.
+ * @hw:			Driver data for hardware decoder.
+ */
+struct img_ir_priv {
+	struct device		*dev;
+	int			irq;
+	struct clk		*clk;
+	struct clk		*sys_clk;
+	void __iomem		*reg_base;
+	spinlock_t		lock;
+
+	struct img_ir_priv_raw	raw;
+	struct img_ir_priv_hw	hw;
+};
+
+/* Hardware access */
+
+static inline void img_ir_write(struct img_ir_priv *priv,
+				unsigned int reg_offs, unsigned int data)
+{
+	iowrite32(data, priv->reg_base + reg_offs);
+}
+
+static inline unsigned int img_ir_read(struct img_ir_priv *priv,
+				       unsigned int reg_offs)
+{
+	return ioread32(priv->reg_base + reg_offs);
+}
+
+#endif /* _IMG_IR_H_ */