Resguardo inicial

linux-7.2.3/drivers/thermal/broadcom/Kconfig

@@ -0,0 +1,41 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config BCM2711_THERMAL
+	tristate "Broadcom AVS RO thermal sensor driver"
+	depends on ARCH_BCM2835 || COMPILE_TEST
+	depends on THERMAL_OF && MFD_SYSCON
+	help
+	  Support for thermal sensors on Broadcom BCM2711 SoCs.
+
+config BCM2835_THERMAL
+	tristate "Thermal sensors on bcm2835 SoC"
+	depends on ARCH_BCM2835 || COMPILE_TEST
+	depends on HAS_IOMEM
+	depends on THERMAL_OF
+	help
+	  Support for thermal sensors on Broadcom bcm2835 SoCs.
+
+config BRCMSTB_THERMAL
+	tristate "Broadcom STB AVS TMON thermal driver"
+	depends on ARCH_BRCMSTB || COMPILE_TEST
+	help
+	  Enable this driver if you have a Broadcom STB SoC and would like
+	  thermal framework support.
+
+config BCM_NS_THERMAL
+	tristate "Northstar thermal driver"
+	depends on ARCH_BCM_IPROC || COMPILE_TEST
+	default y if ARCH_BCM_IPROC
+	help
+	  Support for the Northstar and Northstar Plus family of SoCs (e.g.
+	  BCM4708, BCM4709, BCM5301x, BCM95852X, etc). It contains DMU (Device
+	  Management Unit) block with a thermal sensor that allows checking CPU
+	  temperature.
+
+config BCM_SR_THERMAL
+	tristate "Stingray thermal driver"
+	depends on ARCH_BCM_IPROC || COMPILE_TEST
+	default ARCH_BCM_IPROC
+	help
+	  Support for the Stingray family of SoCs. Its different blocks like
+	  iHost, CRMU and NITRO has thermal sensor that allows checking its
+	  temperature.

linux-7.2.3/drivers/thermal/broadcom/Makefile

@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_BCM2711_THERMAL)		+= bcm2711_thermal.o
+obj-$(CONFIG_BCM2835_THERMAL)		+= bcm2835_thermal.o
+obj-$(CONFIG_BRCMSTB_THERMAL)		+= brcmstb_thermal.o
+obj-$(CONFIG_BCM_NS_THERMAL)		+= ns-thermal.o
+obj-$(CONFIG_BCM_SR_THERMAL)		+= sr-thermal.o

linux-7.2.3/drivers/thermal/broadcom/bcm2711_thermal.c

@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Broadcom AVS RO thermal sensor driver
+ *
+ * based on brcmstb_thermal
+ *
+ * Copyright (C) 2020 Stefan Wahren
+ */
+
+#include <linux/bitops.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/thermal.h>
+
+#include "../thermal_hwmon.h"
+
+#define AVS_RO_TEMP_STATUS		0x200
+#define AVS_RO_TEMP_STATUS_VALID_MSK	(BIT(16) | BIT(10))
+#define AVS_RO_TEMP_STATUS_DATA_MSK	GENMASK(9, 0)
+
+struct bcm2711_thermal_priv {
+	struct regmap *regmap;
+	struct thermal_zone_device *thermal;
+};
+
+static int bcm2711_get_temp(struct thermal_zone_device *tz, int *temp)
+{
+	struct bcm2711_thermal_priv *priv = thermal_zone_device_priv(tz);
+	int slope = thermal_zone_get_slope(tz);
+	int offset = thermal_zone_get_offset(tz);
+	u32 val;
+	int ret;
+
+	ret = regmap_read(priv->regmap, AVS_RO_TEMP_STATUS, &val);
+	if (ret)
+		return ret;
+
+	if (!(val & AVS_RO_TEMP_STATUS_VALID_MSK))
+		return -EIO;
+
+	val &= AVS_RO_TEMP_STATUS_DATA_MSK;
+
+	/* Convert a HW code to a temperature reading (millidegree celsius) */
+	*temp = slope * val + offset;
+
+	return 0;
+}
+
+static const struct thermal_zone_device_ops bcm2711_thermal_of_ops = {
+	.get_temp	= bcm2711_get_temp,
+};
+
+static const struct of_device_id bcm2711_thermal_id_table[] = {
+	{ .compatible = "brcm,bcm2711-thermal" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, bcm2711_thermal_id_table);
+
+static int bcm2711_thermal_probe(struct platform_device *pdev)
+{
+	struct thermal_zone_device *thermal;
+	struct bcm2711_thermal_priv *priv;
+	struct device *dev = &pdev->dev;
+	struct device_node *parent;
+	struct regmap *regmap;
+	int ret;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	/* get regmap from syscon node */
+	parent = of_get_parent(dev->of_node); /* parent should be syscon node */
+	regmap = syscon_node_to_regmap(parent);
+	of_node_put(parent);
+	if (IS_ERR(regmap)) {
+		ret = PTR_ERR(regmap);
+		dev_err(dev, "failed to get regmap: %d\n", ret);
+		return ret;
+	}
+	priv->regmap = regmap;
+
+	thermal = devm_thermal_of_zone_register(dev, 0, priv,
+						&bcm2711_thermal_of_ops);
+	if (IS_ERR(thermal)) {
+		ret = PTR_ERR(thermal);
+		dev_err(dev, "could not register sensor: %d\n", ret);
+		return ret;
+	}
+
+	priv->thermal = thermal;
+
+	return thermal_add_hwmon_sysfs(thermal);
+}
+
+static struct platform_driver bcm2711_thermal_driver = {
+	.probe = bcm2711_thermal_probe,
+	.driver = {
+		.name = "bcm2711_thermal",
+		.of_match_table = bcm2711_thermal_id_table,
+	},
+};
+module_platform_driver(bcm2711_thermal_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Stefan Wahren");
+MODULE_DESCRIPTION("Broadcom AVS RO thermal sensor driver");

linux-7.2.3/drivers/thermal/broadcom/bcm2835_thermal.c

@@ -0,0 +1,277 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Driver for Broadcom BCM2835 SoC temperature sensor
+ *
+ * Copyright (C) 2016 Martin Sperl
+ */
+
+#include <linux/clk.h>
+#include <linux/debugfs.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/minmax.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/thermal.h>
+
+#include "../thermal_hwmon.h"
+
+#define BCM2835_TS_TSENSCTL			0x00
+#define BCM2835_TS_TSENSSTAT			0x04
+
+#define BCM2835_TS_TSENSCTL_PRWDW		BIT(0)
+#define BCM2835_TS_TSENSCTL_RSTB		BIT(1)
+
+/*
+ * bandgap reference voltage in 6 mV increments
+ * 000b = 1178 mV, 001b = 1184 mV, ... 111b = 1220 mV
+ */
+#define BCM2835_TS_TSENSCTL_CTRL_BITS		3
+#define BCM2835_TS_TSENSCTL_CTRL_SHIFT		2
+#define BCM2835_TS_TSENSCTL_CTRL_MASK		    \
+	GENMASK(BCM2835_TS_TSENSCTL_CTRL_BITS +     \
+		BCM2835_TS_TSENSCTL_CTRL_SHIFT - 1, \
+		BCM2835_TS_TSENSCTL_CTRL_SHIFT)
+#define BCM2835_TS_TSENSCTL_CTRL_DEFAULT	1
+#define BCM2835_TS_TSENSCTL_EN_INT		BIT(5)
+#define BCM2835_TS_TSENSCTL_DIRECT		BIT(6)
+#define BCM2835_TS_TSENSCTL_CLR_INT		BIT(7)
+#define BCM2835_TS_TSENSCTL_THOLD_SHIFT		8
+#define BCM2835_TS_TSENSCTL_THOLD_BITS		10
+#define BCM2835_TS_TSENSCTL_THOLD_MASK		     \
+	GENMASK(BCM2835_TS_TSENSCTL_THOLD_BITS +     \
+		BCM2835_TS_TSENSCTL_THOLD_SHIFT - 1, \
+		BCM2835_TS_TSENSCTL_THOLD_SHIFT)
+/*
+ * time how long the block to be asserted in reset
+ * which based on a clock counter (TSENS clock assumed)
+ */
+#define BCM2835_TS_TSENSCTL_RSTDELAY_SHIFT	18
+#define BCM2835_TS_TSENSCTL_RSTDELAY_BITS	8
+#define BCM2835_TS_TSENSCTL_REGULEN		BIT(26)
+
+#define BCM2835_TS_TSENSSTAT_DATA_BITS		10
+#define BCM2835_TS_TSENSSTAT_DATA_SHIFT		0
+#define BCM2835_TS_TSENSSTAT_DATA_MASK		     \
+	GENMASK(BCM2835_TS_TSENSSTAT_DATA_BITS +     \
+		BCM2835_TS_TSENSSTAT_DATA_SHIFT - 1, \
+		BCM2835_TS_TSENSSTAT_DATA_SHIFT)
+#define BCM2835_TS_TSENSSTAT_VALID		BIT(10)
+#define BCM2835_TS_TSENSSTAT_INTERRUPT		BIT(11)
+
+struct bcm2835_thermal_data {
+	struct thermal_zone_device *tz;
+	void __iomem *regs;
+	struct clk *clk;
+	struct dentry *debugfsdir;
+};
+
+static int bcm2835_thermal_adc2temp(u32 adc, int offset, int slope)
+{
+	return offset + slope * adc;
+}
+
+static int bcm2835_thermal_temp2adc(int temp, int offset, int slope)
+{
+	temp -= offset;
+	temp /= slope;
+
+	return clamp(temp, 0, (int)BIT(BCM2835_TS_TSENSSTAT_DATA_BITS) - 1);
+}
+
+static int bcm2835_thermal_get_temp(struct thermal_zone_device *tz, int *temp)
+{
+	struct bcm2835_thermal_data *data = thermal_zone_device_priv(tz);
+	u32 val = readl(data->regs + BCM2835_TS_TSENSSTAT);
+
+	if (!(val & BCM2835_TS_TSENSSTAT_VALID))
+		return -EIO;
+
+	val &= BCM2835_TS_TSENSSTAT_DATA_MASK;
+
+	*temp = bcm2835_thermal_adc2temp(
+		val,
+		thermal_zone_get_offset(data->tz),
+		thermal_zone_get_slope(data->tz));
+
+	return 0;
+}
+
+static const struct debugfs_reg32 bcm2835_thermal_regs[] = {
+	{
+		.name = "ctl",
+		.offset = 0
+	},
+	{
+		.name = "stat",
+		.offset = 4
+	}
+};
+
+static void bcm2835_thermal_debugfs(struct platform_device *pdev)
+{
+	struct bcm2835_thermal_data *data = platform_get_drvdata(pdev);
+	struct debugfs_regset32 *regset;
+
+	data->debugfsdir = debugfs_create_dir("bcm2835_thermal", NULL);
+
+	regset = devm_kzalloc(&pdev->dev, sizeof(*regset), GFP_KERNEL);
+	if (!regset)
+		return;
+
+	regset->regs = bcm2835_thermal_regs;
+	regset->nregs = ARRAY_SIZE(bcm2835_thermal_regs);
+	regset->base = data->regs;
+
+	debugfs_create_regset32("regset", 0444, data->debugfsdir, regset);
+}
+
+static const struct thermal_zone_device_ops bcm2835_thermal_ops = {
+	.get_temp = bcm2835_thermal_get_temp,
+};
+
+/*
+ * Note: as per Raspberry Foundation FAQ
+ * (https://www.raspberrypi.org/help/faqs/#performanceOperatingTemperature)
+ * the recommended temperature range for the SoC -40C to +85C
+ * so the trip limit is set to 80C.
+ * this applies to all the BCM283X SoC
+ */
+
+static const struct of_device_id bcm2835_thermal_of_match_table[] = {
+	{
+		.compatible = "brcm,bcm2835-thermal",
+	},
+	{
+		.compatible = "brcm,bcm2836-thermal",
+	},
+	{
+		.compatible = "brcm,bcm2837-thermal",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, bcm2835_thermal_of_match_table);
+
+static int bcm2835_thermal_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	const struct of_device_id *match;
+	struct thermal_zone_device *tz;
+	struct bcm2835_thermal_data *data;
+	int err = 0;
+	u32 val;
+	unsigned long rate;
+
+	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	match = of_match_device(bcm2835_thermal_of_match_table, dev);
+	if (!match)
+		return -EINVAL;
+
+	data->regs = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
+	if (IS_ERR(data->regs)) {
+		err = PTR_ERR(data->regs);
+		return err;
+	}
+
+	data->clk = devm_clk_get_enabled(dev, NULL);
+	if (IS_ERR(data->clk))
+		return dev_err_probe(dev, PTR_ERR(data->clk), "Could not get clk\n");
+
+	rate = clk_get_rate(data->clk);
+	if ((rate < 1920000) || (rate > 5000000))
+		dev_warn(dev,
+			 "Clock %pC running at %lu Hz is outside of the recommended range: 1.92 to 5MHz\n",
+			 data->clk, rate);
+
+	/* register of thermal sensor and get info from DT */
+	tz = devm_thermal_of_zone_register(dev, 0, data, &bcm2835_thermal_ops);
+	if (IS_ERR(tz))
+		return dev_err_probe(dev, PTR_ERR(tz), "Failed to register the thermal device\n");
+
+	/*
+	 * right now the FW does set up the HW-block, so we are not
+	 * touching the configuration registers.
+	 * But if the HW is not enabled, then set it up
+	 * using "sane" values used by the firmware right now.
+	 */
+	val = readl(data->regs + BCM2835_TS_TSENSCTL);
+	if (!(val & BCM2835_TS_TSENSCTL_RSTB)) {
+		int offset, slope, crit_temp;
+
+		slope = thermal_zone_get_slope(tz);
+		offset = thermal_zone_get_offset(tz);
+		/*
+		 * For now we deal only with critical, otherwise
+		 * would need to iterate
+		 */
+		err = thermal_zone_get_crit_temp(tz, &crit_temp);
+		if (err < 0) {
+			dev_err(dev, "Not able to read trip_temp: %d\n", err);
+			return err;
+		}
+
+		/* set bandgap reference voltage and enable voltage regulator */
+		val = (BCM2835_TS_TSENSCTL_CTRL_DEFAULT <<
+		       BCM2835_TS_TSENSCTL_CTRL_SHIFT) |
+		      BCM2835_TS_TSENSCTL_REGULEN;
+
+		/* use the recommended reset duration */
+		val |= (0xFE << BCM2835_TS_TSENSCTL_RSTDELAY_SHIFT);
+
+		/*  trip_adc value from info */
+		val |= bcm2835_thermal_temp2adc(crit_temp,
+						offset,
+						slope)
+			<< BCM2835_TS_TSENSCTL_THOLD_SHIFT;
+
+		/* write the value back to the register as 2 steps */
+		writel(val, data->regs + BCM2835_TS_TSENSCTL);
+		val |= BCM2835_TS_TSENSCTL_RSTB;
+		writel(val, data->regs + BCM2835_TS_TSENSCTL);
+	}
+
+	data->tz = tz;
+
+	platform_set_drvdata(pdev, data);
+
+	/*
+	 * Thermal_zone doesn't enable hwmon as default,
+	 * enable it here
+	 */
+	err = thermal_add_hwmon_sysfs(tz);
+	if (err)
+		return err;
+
+	bcm2835_thermal_debugfs(pdev);
+
+	return 0;
+}
+
+static void bcm2835_thermal_remove(struct platform_device *pdev)
+{
+	struct bcm2835_thermal_data *data = platform_get_drvdata(pdev);
+
+	debugfs_remove_recursive(data->debugfsdir);
+}
+
+static struct platform_driver bcm2835_thermal_driver = {
+	.probe = bcm2835_thermal_probe,
+	.remove = bcm2835_thermal_remove,
+	.driver = {
+		.name = "bcm2835_thermal",
+		.of_match_table = bcm2835_thermal_of_match_table,
+	},
+};
+module_platform_driver(bcm2835_thermal_driver);
+
+MODULE_AUTHOR("Martin Sperl");
+MODULE_DESCRIPTION("Thermal driver for bcm2835 chip");
+MODULE_LICENSE("GPL");

linux-7.2.3/drivers/thermal/broadcom/brcmstb_thermal.c

@@ -0,0 +1,379 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Broadcom STB AVS TMON thermal sensor driver
+ *
+ * Copyright (c) 2015-2017 Broadcom
+ */
+
+#define DRV_NAME	"brcmstb_thermal"
+
+#define pr_fmt(fmt)	DRV_NAME ": " fmt
+
+#include <linux/bitops.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/irqreturn.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/minmax.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/thermal.h>
+
+#define AVS_TMON_STATUS			0x00
+ #define AVS_TMON_STATUS_valid_msk	BIT(11)
+ #define AVS_TMON_STATUS_data_msk	GENMASK(10, 1)
+ #define AVS_TMON_STATUS_data_shift	1
+
+#define AVS_TMON_EN_OVERTEMP_RESET	0x04
+ #define AVS_TMON_EN_OVERTEMP_RESET_msk	BIT(0)
+
+#define AVS_TMON_RESET_THRESH		0x08
+ #define AVS_TMON_RESET_THRESH_msk	GENMASK(10, 1)
+ #define AVS_TMON_RESET_THRESH_shift	1
+
+#define AVS_TMON_INT_IDLE_TIME		0x10
+
+#define AVS_TMON_EN_TEMP_INT_SRCS	0x14
+ #define AVS_TMON_EN_TEMP_INT_SRCS_high	BIT(1)
+ #define AVS_TMON_EN_TEMP_INT_SRCS_low	BIT(0)
+
+#define AVS_TMON_INT_THRESH		0x18
+ #define AVS_TMON_INT_THRESH_high_msk	GENMASK(26, 17)
+ #define AVS_TMON_INT_THRESH_high_shift	17
+ #define AVS_TMON_INT_THRESH_low_msk	GENMASK(10, 1)
+ #define AVS_TMON_INT_THRESH_low_shift	1
+
+#define AVS_TMON_TEMP_INT_CODE		0x1c
+#define AVS_TMON_TP_TEST_ENABLE		0x20
+
+/* Default coefficients */
+#define AVS_TMON_TEMP_SLOPE		487
+#define AVS_TMON_TEMP_OFFSET		410040
+
+/* HW related temperature constants */
+#define AVS_TMON_TEMP_MAX		0x3ff
+#define AVS_TMON_TEMP_MIN		-88161
+#define AVS_TMON_TEMP_MASK		AVS_TMON_TEMP_MAX
+
+enum avs_tmon_trip_type {
+	TMON_TRIP_TYPE_LOW = 0,
+	TMON_TRIP_TYPE_HIGH,
+	TMON_TRIP_TYPE_RESET,
+	TMON_TRIP_TYPE_MAX,
+};
+
+struct avs_tmon_trip {
+	/* HW bit to enable the trip */
+	u32 enable_offs;
+	u32 enable_mask;
+
+	/* HW field to read the trip temperature */
+	u32 reg_offs;
+	u32 reg_msk;
+	int reg_shift;
+};
+
+static struct avs_tmon_trip avs_tmon_trips[] = {
+	/* Trips when temperature is below threshold */
+	[TMON_TRIP_TYPE_LOW] = {
+		.enable_offs	= AVS_TMON_EN_TEMP_INT_SRCS,
+		.enable_mask	= AVS_TMON_EN_TEMP_INT_SRCS_low,
+		.reg_offs	= AVS_TMON_INT_THRESH,
+		.reg_msk	= AVS_TMON_INT_THRESH_low_msk,
+		.reg_shift	= AVS_TMON_INT_THRESH_low_shift,
+	},
+	/* Trips when temperature is above threshold */
+	[TMON_TRIP_TYPE_HIGH] = {
+		.enable_offs	= AVS_TMON_EN_TEMP_INT_SRCS,
+		.enable_mask	= AVS_TMON_EN_TEMP_INT_SRCS_high,
+		.reg_offs	= AVS_TMON_INT_THRESH,
+		.reg_msk	= AVS_TMON_INT_THRESH_high_msk,
+		.reg_shift	= AVS_TMON_INT_THRESH_high_shift,
+	},
+	/* Automatically resets chip when above threshold */
+	[TMON_TRIP_TYPE_RESET] = {
+		.enable_offs	= AVS_TMON_EN_OVERTEMP_RESET,
+		.enable_mask	= AVS_TMON_EN_OVERTEMP_RESET_msk,
+		.reg_offs	= AVS_TMON_RESET_THRESH,
+		.reg_msk	= AVS_TMON_RESET_THRESH_msk,
+		.reg_shift	= AVS_TMON_RESET_THRESH_shift,
+	},
+};
+
+struct brcmstb_thermal_params {
+	unsigned int offset;
+	unsigned int mult;
+	const struct thermal_zone_device_ops *of_ops;
+};
+
+struct brcmstb_thermal_priv {
+	void __iomem *tmon_base;
+	struct device *dev;
+	struct thermal_zone_device *thermal;
+	/* Process specific thermal parameters used for calculations */
+	const struct brcmstb_thermal_params *temp_params;
+};
+
+/* Convert a HW code to a temperature reading (millidegree celsius) */
+static inline int avs_tmon_code_to_temp(struct brcmstb_thermal_priv *priv,
+					u32 code)
+{
+	int offset = priv->temp_params->offset;
+	int mult = priv->temp_params->mult;
+
+	return (offset - (int)((code & AVS_TMON_TEMP_MASK) * mult));
+}
+
+/*
+ * Convert a temperature value (millidegree celsius) to a HW code
+ *
+ * @temp: temperature to convert
+ * @low: if true, round toward the low side
+ */
+static inline u32 avs_tmon_temp_to_code(struct brcmstb_thermal_priv *priv,
+					int temp, bool low)
+{
+	int offset = priv->temp_params->offset;
+	int mult = priv->temp_params->mult;
+
+	if (temp < AVS_TMON_TEMP_MIN)
+		return AVS_TMON_TEMP_MAX;	/* Maximum code value */
+
+	if (temp >= offset)
+		return 0;	/* Minimum code value */
+
+	if (low)
+		return (u32)(DIV_ROUND_UP(offset - temp, mult));
+	else
+		return (u32)((offset - temp) / mult);
+}
+
+static int brcmstb_get_temp(struct thermal_zone_device *tz, int *temp)
+{
+	struct brcmstb_thermal_priv *priv = thermal_zone_device_priv(tz);
+	u32 val;
+	int t;
+
+	val = __raw_readl(priv->tmon_base + AVS_TMON_STATUS);
+
+	if (!(val & AVS_TMON_STATUS_valid_msk))
+		return -EIO;
+
+	val = (val & AVS_TMON_STATUS_data_msk) >> AVS_TMON_STATUS_data_shift;
+
+	t = avs_tmon_code_to_temp(priv, val);
+	*temp = max(0, t);
+
+	return 0;
+}
+
+static void avs_tmon_trip_enable(struct brcmstb_thermal_priv *priv,
+				 enum avs_tmon_trip_type type, int en)
+{
+	struct avs_tmon_trip *trip = &avs_tmon_trips[type];
+	u32 val = __raw_readl(priv->tmon_base + trip->enable_offs);
+
+	dev_dbg(priv->dev, "%sable trip, type %d\n", en ? "en" : "dis", type);
+
+	if (en)
+		val |= trip->enable_mask;
+	else
+		val &= ~trip->enable_mask;
+
+	__raw_writel(val, priv->tmon_base + trip->enable_offs);
+}
+
+static int avs_tmon_get_trip_temp(struct brcmstb_thermal_priv *priv,
+				  enum avs_tmon_trip_type type)
+{
+	struct avs_tmon_trip *trip = &avs_tmon_trips[type];
+	u32 val = __raw_readl(priv->tmon_base + trip->reg_offs);
+
+	val &= trip->reg_msk;
+	val >>= trip->reg_shift;
+
+	return avs_tmon_code_to_temp(priv, val);
+}
+
+static void avs_tmon_set_trip_temp(struct brcmstb_thermal_priv *priv,
+				   enum avs_tmon_trip_type type,
+				   int temp)
+{
+	struct avs_tmon_trip *trip = &avs_tmon_trips[type];
+	u32 val, orig;
+
+	dev_dbg(priv->dev, "set temp %d to %d\n", type, temp);
+
+	/* round toward low temp for the low interrupt */
+	val = avs_tmon_temp_to_code(priv, temp,
+				    type == TMON_TRIP_TYPE_LOW);
+
+	val <<= trip->reg_shift;
+	val &= trip->reg_msk;
+
+	orig = __raw_readl(priv->tmon_base + trip->reg_offs);
+	orig &= ~trip->reg_msk;
+	orig |= val;
+	__raw_writel(orig, priv->tmon_base + trip->reg_offs);
+}
+
+static int avs_tmon_get_intr_temp(struct brcmstb_thermal_priv *priv)
+{
+	u32 val;
+
+	val = __raw_readl(priv->tmon_base + AVS_TMON_TEMP_INT_CODE);
+	return avs_tmon_code_to_temp(priv, val);
+}
+
+static irqreturn_t brcmstb_tmon_irq_thread(int irq, void *data)
+{
+	struct brcmstb_thermal_priv *priv = data;
+	int low, high, intr;
+
+	low = avs_tmon_get_trip_temp(priv, TMON_TRIP_TYPE_LOW);
+	high = avs_tmon_get_trip_temp(priv, TMON_TRIP_TYPE_HIGH);
+	intr = avs_tmon_get_intr_temp(priv);
+
+	dev_dbg(priv->dev, "low/intr/high: %d/%d/%d\n",
+			low, intr, high);
+
+	/* Disable high-temp until next threshold shift */
+	if (intr >= high)
+		avs_tmon_trip_enable(priv, TMON_TRIP_TYPE_HIGH, 0);
+	/* Disable low-temp until next threshold shift */
+	if (intr <= low)
+		avs_tmon_trip_enable(priv, TMON_TRIP_TYPE_LOW, 0);
+
+	/*
+	 * Notify using the interrupt temperature, in case the temperature
+	 * changes before it can next be read out
+	 */
+	thermal_zone_device_update(priv->thermal, intr);
+
+	return IRQ_HANDLED;
+}
+
+static int brcmstb_set_trips(struct thermal_zone_device *tz, int low, int high)
+{
+	struct brcmstb_thermal_priv *priv = thermal_zone_device_priv(tz);
+
+	dev_dbg(priv->dev, "set trips %d <--> %d\n", low, high);
+
+	/*
+	 * Disable low-temp if "low" is too small. As per thermal framework
+	 * API, we use -INT_MAX rather than INT_MIN.
+	 */
+	if (low <= -INT_MAX) {
+		avs_tmon_trip_enable(priv, TMON_TRIP_TYPE_LOW, 0);
+	} else {
+		avs_tmon_set_trip_temp(priv, TMON_TRIP_TYPE_LOW, low);
+		avs_tmon_trip_enable(priv, TMON_TRIP_TYPE_LOW, 1);
+	}
+
+	/* Disable high-temp if "high" is too big. */
+	if (high == INT_MAX) {
+		avs_tmon_trip_enable(priv, TMON_TRIP_TYPE_HIGH, 0);
+	} else {
+		avs_tmon_set_trip_temp(priv, TMON_TRIP_TYPE_HIGH, high);
+		avs_tmon_trip_enable(priv, TMON_TRIP_TYPE_HIGH, 1);
+	}
+
+	return 0;
+}
+
+static const struct thermal_zone_device_ops brcmstb_of_ops = {
+	.get_temp	= brcmstb_get_temp,
+};
+
+static const struct brcmstb_thermal_params brcmstb_8nm_params = {
+	.offset	= 418670,
+	.mult	= 509,
+	.of_ops	= &brcmstb_of_ops,
+};
+
+static const struct brcmstb_thermal_params brcmstb_16nm_params = {
+	.offset	= 457829,
+	.mult	= 557,
+	.of_ops	= &brcmstb_of_ops,
+};
+
+static const struct thermal_zone_device_ops brcmstb_28nm_of_ops = {
+	.get_temp	= brcmstb_get_temp,
+	.set_trips	= brcmstb_set_trips,
+};
+
+static const struct brcmstb_thermal_params brcmstb_28nm_params = {
+	.offset	= 410040,
+	.mult	= 487,
+	.of_ops	= &brcmstb_28nm_of_ops,
+};
+
+static const struct of_device_id brcmstb_thermal_id_table[] = {
+	{ .compatible = "brcm,avs-tmon-bcm74110", .data = &brcmstb_8nm_params },
+	{ .compatible = "brcm,avs-tmon-bcm7216", .data = &brcmstb_16nm_params },
+	{ .compatible = "brcm,avs-tmon", .data = &brcmstb_28nm_params },
+	{},
+};
+MODULE_DEVICE_TABLE(of, brcmstb_thermal_id_table);
+
+static int brcmstb_thermal_probe(struct platform_device *pdev)
+{
+	const struct thermal_zone_device_ops *of_ops;
+	struct thermal_zone_device *thermal;
+	struct brcmstb_thermal_priv *priv;
+	int irq, ret;
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->temp_params = of_device_get_match_data(&pdev->dev);
+	if (!priv->temp_params)
+		return -EINVAL;
+
+	priv->tmon_base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
+	if (IS_ERR(priv->tmon_base))
+		return PTR_ERR(priv->tmon_base);
+
+	priv->dev = &pdev->dev;
+	of_ops = priv->temp_params->of_ops;
+
+	thermal = devm_thermal_of_zone_register(&pdev->dev, 0, priv,
+						of_ops);
+	if (IS_ERR(thermal))
+		return dev_err_probe(&pdev->dev, PTR_ERR(thermal),
+					"could not register sensor\n");
+
+	priv->thermal = thermal;
+
+	irq = platform_get_irq_optional(pdev, 0);
+	if (irq >= 0) {
+		ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+						brcmstb_tmon_irq_thread,
+						IRQF_ONESHOT,
+						DRV_NAME, priv);
+		if (ret < 0)
+			return dev_err_probe(&pdev->dev, ret,
+						"could not request IRQ\n");
+	}
+
+	dev_info(&pdev->dev, "registered AVS TMON of-sensor driver\n");
+
+	return 0;
+}
+
+static struct platform_driver brcmstb_thermal_driver = {
+	.probe = brcmstb_thermal_probe,
+	.driver = {
+		.name = DRV_NAME,
+		.of_match_table = brcmstb_thermal_id_table,
+	},
+};
+module_platform_driver(brcmstb_thermal_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Brian Norris");
+MODULE_DESCRIPTION("Broadcom STB AVS TMON thermal driver");

linux-7.2.3/drivers/thermal/broadcom/ns-thermal.c

@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2017 Rafał Miłecki <rafal@milecki.pl>
+ */
+
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/thermal.h>
+
+#define PVTMON_CONTROL0					0x00
+#define PVTMON_CONTROL0_SEL_MASK			0x0000000e
+#define PVTMON_CONTROL0_SEL_TEMP_MONITOR		0x00000000
+#define PVTMON_CONTROL0_SEL_TEST_MODE			0x0000000e
+#define PVTMON_STATUS					0x08
+
+static int ns_thermal_get_temp(struct thermal_zone_device *tz, int *temp)
+{
+	void __iomem *pvtmon = thermal_zone_device_priv(tz);
+	int offset = thermal_zone_get_offset(tz);
+	int slope = thermal_zone_get_slope(tz);
+	u32 val;
+
+	val = readl(pvtmon + PVTMON_CONTROL0);
+	if ((val & PVTMON_CONTROL0_SEL_MASK) != PVTMON_CONTROL0_SEL_TEMP_MONITOR) {
+		/* Clear current mode selection */
+		val &= ~PVTMON_CONTROL0_SEL_MASK;
+
+		/* Set temp monitor mode (it's the default actually) */
+		val |= PVTMON_CONTROL0_SEL_TEMP_MONITOR;
+
+		writel(val, pvtmon + PVTMON_CONTROL0);
+	}
+
+	val = readl(pvtmon + PVTMON_STATUS);
+	*temp = slope * val + offset;
+
+	return 0;
+}
+
+static const struct thermal_zone_device_ops ns_thermal_ops = {
+	.get_temp = ns_thermal_get_temp,
+};
+
+static int ns_thermal_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct thermal_zone_device *tz;
+	void __iomem *pvtmon;
+
+	pvtmon = of_iomap(dev_of_node(dev), 0);
+	if (WARN_ON(!pvtmon))
+		return -ENOENT;
+
+	tz = devm_thermal_of_zone_register(dev, 0,
+					   pvtmon,
+					   &ns_thermal_ops);
+	if (IS_ERR(tz)) {
+		iounmap(pvtmon);
+		return PTR_ERR(tz);
+	}
+
+	platform_set_drvdata(pdev, pvtmon);
+
+	return 0;
+}
+
+static void ns_thermal_remove(struct platform_device *pdev)
+{
+	void __iomem *pvtmon = platform_get_drvdata(pdev);
+
+	iounmap(pvtmon);
+}
+
+static const struct of_device_id ns_thermal_of_match[] = {
+	{ .compatible = "brcm,ns-thermal", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, ns_thermal_of_match);
+
+static struct platform_driver ns_thermal_driver = {
+	.probe		= ns_thermal_probe,
+	.remove		= ns_thermal_remove,
+	.driver = {
+		.name = "ns-thermal",
+		.of_match_table = ns_thermal_of_match,
+	},
+};
+module_platform_driver(ns_thermal_driver);
+
+MODULE_AUTHOR("Rafał Miłecki <rafal@milecki.pl>");
+MODULE_DESCRIPTION("Northstar thermal driver");
+MODULE_LICENSE("GPL v2");

linux-7.2.3/drivers/thermal/broadcom/sr-thermal.c

@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018 Broadcom
+ */
+
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/thermal.h>
+
+/*
+ * In stingray thermal IO memory,
+ * Total Number of available TMONs MASK is at offset 0
+ * temperature registers BASE is at 4 byte offset.
+ * Each TMON temperature register size is 4.
+ */
+#define SR_TMON_TEMP_BASE(id)   ((id) * 0x4)
+
+#define SR_TMON_MAX_LIST        6
+
+struct sr_tmon {
+	unsigned int crit_temp;
+	unsigned int tmon_id;
+	struct sr_thermal *priv;
+};
+
+struct sr_thermal {
+	void __iomem *regs;
+	unsigned int max_crit_temp;
+	struct sr_tmon tmon[SR_TMON_MAX_LIST];
+};
+
+static int sr_get_temp(struct thermal_zone_device *tz, int *temp)
+{
+	struct sr_tmon *tmon = thermal_zone_device_priv(tz);
+	struct sr_thermal *sr_thermal = tmon->priv;
+
+	*temp = readl(sr_thermal->regs + SR_TMON_TEMP_BASE(tmon->tmon_id));
+
+	return 0;
+}
+
+static const struct thermal_zone_device_ops sr_tz_ops = {
+	.get_temp = sr_get_temp,
+};
+
+static int sr_thermal_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct thermal_zone_device *tz;
+	struct sr_thermal *sr_thermal;
+	struct sr_tmon *tmon;
+	struct resource *res;
+	u32 sr_tmon_list = 0;
+	unsigned int i;
+	int ret;
+
+	sr_thermal = devm_kzalloc(dev, sizeof(*sr_thermal), GFP_KERNEL);
+	if (!sr_thermal)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -ENOENT;
+
+	sr_thermal->regs = (void __iomem *)devm_memremap(&pdev->dev, res->start,
+							 resource_size(res),
+							 MEMREMAP_WB);
+	if (IS_ERR(sr_thermal->regs)) {
+		dev_err(dev, "failed to get io address\n");
+		return PTR_ERR(sr_thermal->regs);
+	}
+
+	ret = device_property_read_u32(dev, "brcm,tmon-mask", &sr_tmon_list);
+	if (ret)
+		return ret;
+
+	tmon = sr_thermal->tmon;
+	for (i = 0; i < SR_TMON_MAX_LIST; i++, tmon++) {
+		if (!(sr_tmon_list & BIT(i)))
+			continue;
+
+		/* Flush temperature registers */
+		writel(0, sr_thermal->regs + SR_TMON_TEMP_BASE(i));
+		tmon->tmon_id = i;
+		tmon->priv = sr_thermal;
+		tz = devm_thermal_of_zone_register(dev, i, tmon,
+						   &sr_tz_ops);
+		if (IS_ERR(tz))
+			return PTR_ERR(tz);
+
+		dev_dbg(dev, "thermal sensor %d registered\n", i);
+	}
+
+	return 0;
+}
+
+static const struct of_device_id sr_thermal_of_match[] = {
+	{ .compatible = "brcm,sr-thermal", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, sr_thermal_of_match);
+
+static struct platform_driver sr_thermal_driver = {
+	.probe		= sr_thermal_probe,
+	.driver = {
+		.name = "sr-thermal",
+		.of_match_table = sr_thermal_of_match,
+	},
+};
+module_platform_driver(sr_thermal_driver);
+
+MODULE_AUTHOR("Pramod Kumar <pramod.kumar@broadcom.com>");
+MODULE_DESCRIPTION("Stingray thermal driver");
+MODULE_LICENSE("GPL v2");