Merge "drivers: thermal: Add a snapshot of bcl soc driver" (1966f732) · Commits · e / devices / android_kernel_fairphone_FP5

drivers/thermal/qcom/Kconfig

+29 −0

Original line number	Diff line number	Diff line
		@@ -21,6 +21,35 @@ config QCOM_SPMI_TEMP_ALARM
		real time die temperature if an ADC is present or an estimate of the
		temperature based upon the over temperature stage value.

		config QTI_QMI_SENSOR
		tristate "QTI QMI sensor driver"
		depends on QCOM_QMI_HELPERS && THERMAL_OF && QTI_THERMAL
		help
		This enables to list the QTI remote subsystem temperature sensors.
		This driver can read the temperature of the remote sensor.
		These sensors can take thresholds and notify the thermal
		framework when the threshold is reached.

		config QTI_BCL_PMIC5
		tristate "BCL driver for BCL peripherals in PMIC5"
		depends on SPMI && THERMAL_OF && QTI_THERMAL
		help
		This driver provides routines to configure and monitor the BCL
		PMIC peripheral. This driver registers the battery current and
		voltage sensors with the thermal core framework and can take
		threshold input and notify the thermal core when the threshold is
		reached.

		config QTI_BCL_SOC_DRIVER
		tristate "QTI Battery state of charge sensor driver"
		depends on THERMAL_OF && POWER_SUPPLY && QTI_THERMAL
		help
		This driver registers battery state of charge as a sensor with
		thermal framework. This sensor can monitor for state of charge
		thresholds and notify the thermal framework when the thresholds
		are reached and cleared. This will help to monitor and apply any
		mitigation when state of charge goes below a certain threshold.

		config QTI_CPU_ISOLATE_COOLING_DEVICE
		tristate "QTI CPU Isolate cooling devices"
		depends on THERMAL_OF && QTI_THERMAL

drivers/thermal/qcom/Makefile

+4 −0

Original line number	Diff line number	Diff line
		@@ -4,4 +4,8 @@ obj-$(CONFIG_QCOM_TSENS) += qcom_tsens.o
		qcom_tsens-y += tsens.o tsens-common.o tsens-v0_1.o \
		tsens-8960.o tsens-v2.o tsens-v1.o
		obj-$(CONFIG_QCOM_SPMI_TEMP_ALARM) += qcom-spmi-temp-alarm.o
		obj-$(CONFIG_QTI_QMI_SENSOR) += qti_qmi_sensor.o
		qti_qmi_sensor-y += thermal_sensor_service_v01.o qmi_sensors.o
		obj-$(CONFIG_QTI_CPU_ISOLATE_COOLING_DEVICE) += cpu_isolate.o
		obj-$(CONFIG_QTI_BCL_PMIC5) += bcl_pmic5.o
		obj-$(CONFIG_QTI_BCL_SOC_DRIVER) += bcl_soc.o

drivers/thermal/qcom/bcl_pmic5.c

0 → 100644

+667 −0

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-only
		/*
		* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
		*/

		#define pr_fmt(fmt) "%s:%s " fmt, KBUILD_MODNAME, __func__

		#include <linux/module.h>
		#include <linux/interrupt.h>
		#include <linux/workqueue.h>
		#include <linux/kernel.h>
		#include <linux/regmap.h>
		#include <linux/io.h>
		#include <linux/err.h>
		#include <linux/of.h>
		#include <linux/of_address.h>
		#include <linux/spmi.h>
		#include <linux/platform_device.h>
		#include <linux/mutex.h>
		#include <linux/thermal.h>

		#include "../thermal_core.h"

		#define BCL_DRIVER_NAME "bcl_pmic5"
		#define BCL_MONITOR_EN 0x46
		#define BCL_IRQ_STATUS 0x08

		#define BCL_IBAT_HIGH 0x4B
		#define BCL_IBAT_TOO_HIGH 0x4C
		#define BCL_IBAT_READ 0x86
		#define BCL_IBAT_SCALING_UA 78127

		#define BCL_VBAT_READ 0x76
		#define BCL_VBAT_ADC_LOW 0x48
		#define BCL_VBAT_COMP_LOW 0x49
		#define BCL_VBAT_COMP_TLOW 0x4A

		#define BCL_IRQ_L0 0x1
		#define BCL_IRQ_L1 0x2
		#define BCL_IRQ_L2 0x4

		#define BCL_VBAT_SCALING_UV 49827
		#define BCL_VBAT_NO_READING 127
		#define BCL_VBAT_BASE_MV 2000
		#define BCL_VBAT_INC_MV 25
		#define BCL_VBAT_MAX_MV 3600
		#define BCL_VBAT_THRESH_BASE 2250

		#define MAX_PERPH_COUNT 2

		enum bcl_dev_type {
		BCL_IBAT_LVL0,
		BCL_IBAT_LVL1,
		BCL_VBAT_LVL0,
		BCL_VBAT_LVL1,
		BCL_VBAT_LVL2,
		BCL_LVL0,
		BCL_LVL1,
		BCL_LVL2,
		BCL_TYPE_MAX,
		};

		static char bcl_int_names[BCL_TYPE_MAX][25] = {
		"bcl-ibat-lvl0",
		"bcl-ibat-lvl1",
		"bcl-vbat-lvl0",
		"bcl-vbat-lvl1",
		"bcl-vbat-lvl2",
		"bcl-lvl0",
		"bcl-lvl1",
		"bcl-lvl2",
		};

		struct bcl_device;

		struct bcl_peripheral_data {
		int irq_num;
		int status_bit_idx;
		long trip_thresh;
		int last_val;
		struct mutex state_trans_lock;
		bool irq_enabled;
		enum bcl_dev_type type;
		struct thermal_zone_of_device_ops ops;
		struct thermal_zone_device *tz_dev;
		struct bcl_device *dev;
		};

		struct bcl_device {
		struct device *dev;
		struct regmap *regmap;
		uint16_t fg_bcl_addr;
		struct bcl_peripheral_data param[BCL_TYPE_MAX];
		};

		static struct bcl_device *bcl_devices[MAX_PERPH_COUNT];
		static int bcl_device_ct;
		static bool ibat_use_qg_adc;

		static int bcl_read_register(struct bcl_device *bcl_perph, int16_t reg_offset,
		unsigned int *data)
		{
		int ret = 0;

		if (!bcl_perph) {
		pr_err("BCL device not initialized\n");
		return -EINVAL;
		}
		ret = regmap_read(bcl_perph->regmap,
		(bcl_perph->fg_bcl_addr + reg_offset),
		data);
		if (ret < 0)
		pr_err("Error reading register 0x%04x err:%d\n",
		bcl_perph->fg_bcl_addr + reg_offset, ret);
		else
		pr_debug("Read register:0x%04x value:0x%02x\n",
		bcl_perph->fg_bcl_addr + reg_offset,
		*data);

		return ret;
		}

		static int bcl_write_register(struct bcl_device *bcl_perph,
		int16_t reg_offset, uint8_t data)
		{
		int ret = 0;
		uint8_t *write_buf = &data;
		uint16_t base;

		if (!bcl_perph) {
		pr_err("BCL device not initialized\n");
		return -EINVAL;
		}
		base = bcl_perph->fg_bcl_addr;
		ret = regmap_write(bcl_perph->regmap, (base + reg_offset), *write_buf);
		if (ret < 0) {
		pr_err("Error reading register:0x%04x val:0x%02x err:%d\n",
		base + reg_offset, data, ret);
		return ret;
		}
		pr_debug("wrote 0x%02x to 0x%04x\n", data, base + reg_offset);

		return ret;
		}

		static void convert_adc_to_vbat_thresh_val(int *val)
		{
		/*
		* Threshold register is bit shifted from ADC MSB.
		* So the scaling factor is half.
		*/
		val = (val * BCL_VBAT_SCALING_UV) / 2000;
		}

		static void convert_adc_to_vbat_val(int *val)
		{
		val = (val * BCL_VBAT_SCALING_UV) / 1000;
		}

		static void convert_ibat_to_adc_val(int *val)
		{
		/*
		* Threshold register is bit shifted from ADC MSB.
		* So the scaling factor is half.
		*/
		if (ibat_use_qg_adc)
		val = (int)div_s64(val * 2000 * 2, BCL_IBAT_SCALING_UA);
		else
		val = (int)div_s64(val * 2000, BCL_IBAT_SCALING_UA);

		}

		static void convert_adc_to_ibat_val(int *val)
		{
		/* Scaling factor will be half if ibat_use_qg_adc is true */
		if (ibat_use_qg_adc)
		val = (int)div_s64(val * BCL_IBAT_SCALING_UA, 2 * 1000);
		else
		val = (int)div_s64(val * BCL_IBAT_SCALING_UA, 1000);
		}

		static int bcl_set_ibat(void *data, int low, int high)
		{
		int ret = 0, ibat_ua, thresh_value;
		int8_t val = 0;
		int16_t addr;
		struct bcl_peripheral_data *bat_data =
		(struct bcl_peripheral_data *)data;

		mutex_lock(&bat_data->state_trans_lock);
		thresh_value = high;
		if (bat_data->trip_thresh == thresh_value)
		goto set_trip_exit;

		if (bat_data->irq_num && bat_data->irq_enabled) {
		disable_irq_nosync(bat_data->irq_num);
		bat_data->irq_enabled = false;
		}
		if (thresh_value == INT_MAX) {
		bat_data->trip_thresh = thresh_value;
		goto set_trip_exit;
		}

		ibat_ua = thresh_value;
		convert_ibat_to_adc_val(&thresh_value);
		val = (int8_t)thresh_value;
		switch (bat_data->type) {
		case BCL_IBAT_LVL0:
		addr = BCL_IBAT_HIGH;
		pr_debug("ibat high threshold:%d mA ADC:0x%02x\n",
		ibat_ua, val);
		break;
		case BCL_IBAT_LVL1:
		addr = BCL_IBAT_TOO_HIGH;
		pr_debug("ibat too high threshold:%d mA ADC:0x%02x\n",
		ibat_ua, val);
		break;
		default:
		goto set_trip_exit;
		}
		ret = bcl_write_register(bat_data->dev, addr, val);
		if (ret)
		goto set_trip_exit;
		bat_data->trip_thresh = ibat_ua;

		if (bat_data->irq_num && !bat_data->irq_enabled) {
		enable_irq(bat_data->irq_num);
		bat_data->irq_enabled = true;
		}

		set_trip_exit:
		mutex_unlock(&bat_data->state_trans_lock);

		return ret;
		}

		static int bcl_read_ibat(void data, int adc_value)
		{
		int ret = 0;
		unsigned int val = 0;
		struct bcl_peripheral_data *bat_data =
		(struct bcl_peripheral_data *)data;

		*adc_value = val;
		ret = bcl_read_register(bat_data->dev, BCL_IBAT_READ, &val);
		if (ret)
		goto bcl_read_exit;
		/* IBat ADC reading is in 2's compliment form */
		*adc_value = sign_extend32(val, 7);
		if (val == 0) {
		/*
		* The sensor sometime can read a value 0 if there is
		* consequtive reads
		*/
		*adc_value = bat_data->last_val;
		} else {
		convert_adc_to_ibat_val(adc_value);
		bat_data->last_val = *adc_value;
		}
		pr_debug("ibat:%d mA ADC:0x%02x\n", bat_data->last_val, val);

		bcl_read_exit:
		return ret;
		}

		static int bcl_get_vbat_trip(struct thermal_zone_device *tzd,
		int type, int *trip)
		{
		int ret = 0;
		unsigned int val = 0;
		struct bcl_peripheral_data *bat_data =
		(struct bcl_peripheral_data *)tzd->devdata;
		int16_t addr;

		*trip = 0;
		switch (type + BCL_VBAT_LVL0) {
		case BCL_VBAT_LVL0:
		addr = BCL_VBAT_ADC_LOW;
		break;
		case BCL_VBAT_LVL1:
		addr = BCL_VBAT_COMP_LOW;
		break;
		case BCL_VBAT_LVL2:
		addr = BCL_VBAT_COMP_TLOW;
		break;
		default:
		return -ENODEV;
		}

		ret = bcl_read_register(bat_data->dev, addr, &val);
		if (ret)
		return ret;

		if (addr == BCL_VBAT_ADC_LOW) {
		*trip = val;
		convert_adc_to_vbat_thresh_val(trip);
		pr_debug("vbat trip: %d mV ADC:0x%02x\n", *trip, val);
		} else {
		trip = BCL_VBAT_THRESH_BASE + val 25;
		if (*trip > BCL_VBAT_MAX_MV)
		*trip = BCL_VBAT_MAX_MV;
		pr_debug("vbat-%s-low trip: %d mV ADC:0x%02x\n",
		(addr == BCL_VBAT_COMP_LOW) ?
		"too" : "critical",
		*trip, val);
		}

		return 0;
		}

		static int bcl_read_vbat_tz(struct thermal_zone_device tzd, int adc_value)
		{
		int ret = 0;
		unsigned int val = 0;
		struct bcl_peripheral_data *bat_data =
		(struct bcl_peripheral_data *)tzd->devdata;

		*adc_value = val;
		ret = bcl_read_register(bat_data->dev, BCL_VBAT_READ, &val);
		if (ret)
		goto bcl_read_exit;
		*adc_value = val;
		if (*adc_value == BCL_VBAT_NO_READING) {
		*adc_value = bat_data->last_val;
		} else {
		convert_adc_to_vbat_val(adc_value);
		bat_data->last_val = *adc_value;
		}
		pr_debug("vbat:%d mv\n", bat_data->last_val);

		bcl_read_exit:
		return ret;
		}

		static int bcl_read_vbat_type(struct thermal_zone_device *tzd, int trip,
		enum thermal_trip_type *type)
		{
		*type = THERMAL_TRIP_PASSIVE;
		return 0;
		}

		static struct thermal_zone_device_ops vbat_tzd_ops = {
		.get_temp = bcl_read_vbat_tz,
		.get_trip_temp = bcl_get_vbat_trip,
		.get_trip_type = bcl_read_vbat_type,
		};

		static struct thermal_zone_params vbat_tzp = {
		.governor_name = "step_wise",
		.no_hwmon = true,
		.num_tbps = 0,
		.tbp = NULL,
		.sustainable_power = 0,
		.k_po = 0,
		.k_pu = 0,
		.k_i = 0,
		.k_d = 0,
		.integral_cutoff = 0,
		.slope = 1,
		.offset = 0
		};

		static int bcl_set_lbat(void *data, int low, int high)
		{
		struct bcl_peripheral_data *bat_data =
		(struct bcl_peripheral_data *)data;

		mutex_lock(&bat_data->state_trans_lock);

		if (high == INT_MAX &&
		bat_data->irq_num && bat_data->irq_enabled) {
		disable_irq_nosync(bat_data->irq_num);
		bat_data->irq_enabled = false;
		pr_debug("lbat[%d]: disable irq:%d\n",
		bat_data->type,
		bat_data->irq_num);
		} else if (high != INT_MAX &&
		bat_data->irq_num && !bat_data->irq_enabled) {
		enable_irq(bat_data->irq_num);
		bat_data->irq_enabled = true;
		pr_debug("lbat[%d]: enable irq:%d\n",
		bat_data->type,
		bat_data->irq_num);
		}

		mutex_unlock(&bat_data->state_trans_lock);

		return 0;
		}

		static int bcl_read_lbat(void data, int adc_value)
		{
		int ret = 0;
		unsigned int val = 0;
		struct bcl_peripheral_data *bat_data =
		(struct bcl_peripheral_data *)data;
		struct bcl_device *bcl_perph = bat_data->dev;

		*adc_value = val;
		ret = bcl_read_register(bcl_perph, BCL_IRQ_STATUS, &val);
		if (ret)
		goto bcl_read_exit;
		switch (bat_data->type) {
		case BCL_LVL0:
		*adc_value = val & BCL_IRQ_L0;
		break;
		case BCL_LVL1:
		*adc_value = val & BCL_IRQ_L1;
		break;
		case BCL_LVL2:
		*adc_value = val & BCL_IRQ_L2;
		break;
		default:
		pr_err("Invalid sensor type:%d\n", bat_data->type);
		ret = -ENODEV;
		goto bcl_read_exit;
		}
		bat_data->last_val = *adc_value;
		pr_debug("lbat:%d val:%d\n", bat_data->type,
		bat_data->last_val);

		bcl_read_exit:
		return ret;
		}

		static irqreturn_t bcl_handle_irq(int irq, void *data)
		{
		struct bcl_peripheral_data *perph_data =
		(struct bcl_peripheral_data *)data;
		unsigned int irq_status = 0;
		struct bcl_device *bcl_perph;

		bcl_perph = perph_data->dev;
		bcl_read_register(bcl_perph, BCL_IRQ_STATUS, &irq_status);

		if (irq_status & perph_data->status_bit_idx) {
		pr_debug("Irq:%d triggered for bcl type:%s. status:%u\n",
		irq, bcl_int_names[perph_data->type],
		irq_status);
		of_thermal_handle_trip_temp(perph_data->dev->dev,
		perph_data->tz_dev,
		perph_data->status_bit_idx);
		}

		return IRQ_HANDLED;
		}

		static int bcl_get_devicetree_data(struct platform_device *pdev,
		struct bcl_device *bcl_perph)
		{
		int ret = 0;
		const __be32 *prop = NULL;
		struct device_node *dev_node = pdev->dev.of_node;

		prop = of_get_address(dev_node, 0, NULL, NULL);
		if (prop) {
		bcl_perph->fg_bcl_addr = be32_to_cpu(*prop);
		pr_debug("fg_bcl@%04x\n", bcl_perph->fg_bcl_addr);
		} else {
		dev_err(&pdev->dev, "No fg_bcl registers found\n");
		return -ENODEV;
		}

		ibat_use_qg_adc = of_property_read_bool(dev_node,
		"qcom,ibat-use-qg-adc-5a");

		return ret;
		}

		static void bcl_fetch_trip(struct platform_device *pdev, enum bcl_dev_type type,
		struct bcl_peripheral_data *data,
		irqreturn_t (handle)(int, void ))
		{
		int ret = 0, irq_num = 0;
		char *int_name = bcl_int_names[type];

		mutex_lock(&data->state_trans_lock);
		data->irq_num = 0;
		data->irq_enabled = false;
		irq_num = platform_get_irq_byname(pdev, int_name);
		if (irq_num > 0 && handle) {
		ret = devm_request_threaded_irq(&pdev->dev,
		irq_num, NULL, handle,
		IRQF_TRIGGER_RISING \| IRQF_ONESHOT,
		int_name, data);
		if (ret) {
		dev_err(&pdev->dev,
		"Error requesting trip irq. err:%d\n",
		ret);
		mutex_unlock(&data->state_trans_lock);
		return;
		}
		disable_irq_nosync(irq_num);
		data->irq_num = irq_num;
		} else if (irq_num > 0 && !handle) {
		disable_irq_nosync(irq_num);
		data->irq_num = irq_num;
		}
		mutex_unlock(&data->state_trans_lock);
		}

		static void bcl_vbat_init(struct platform_device *pdev,
		enum bcl_dev_type type, struct bcl_device *bcl_perph)
		{
		struct bcl_peripheral_data *vbat = &bcl_perph->param[type];

		mutex_init(&vbat->state_trans_lock);
		vbat->dev = bcl_perph;
		vbat->irq_num = 0;
		vbat->irq_enabled = false;
		vbat->tz_dev = thermal_zone_device_register("vbat", 3, 0, vbat,
		&vbat_tzd_ops, &vbat_tzp, 0, 0);
		if (IS_ERR(vbat->tz_dev)) {
		pr_debug("vbat[%s] register failed. err:%ld\n",
		bcl_int_names[type],
		PTR_ERR(vbat->tz_dev));
		vbat->tz_dev = NULL;
		return;
		}
		thermal_zone_device_update(vbat->tz_dev, THERMAL_DEVICE_UP);
		}

		static void bcl_probe_vbat(struct platform_device *pdev,
		struct bcl_device *bcl_perph)
		{
		bcl_vbat_init(pdev, BCL_VBAT_LVL0, bcl_perph);
		}

		static void bcl_ibat_init(struct platform_device *pdev,
		enum bcl_dev_type type, struct bcl_device *bcl_perph)
		{
		struct bcl_peripheral_data *ibat = &bcl_perph->param[type];

		mutex_init(&ibat->state_trans_lock);
		ibat->type = type;
		ibat->dev = bcl_perph;
		ibat->irq_num = 0;
		ibat->irq_enabled = false;
		ibat->ops.get_temp = bcl_read_ibat;
		ibat->ops.set_trips = bcl_set_ibat;
		ibat->tz_dev = thermal_zone_of_sensor_register(&pdev->dev,
		type, ibat, &ibat->ops);
		if (IS_ERR(ibat->tz_dev)) {
		pr_debug("ibat:[%s] register failed. err:%ld\n",
		bcl_int_names[type],
		PTR_ERR(ibat->tz_dev));
		ibat->tz_dev = NULL;
		return;
		}
		thermal_zone_device_update(ibat->tz_dev, THERMAL_DEVICE_UP);
		}

		static void bcl_probe_ibat(struct platform_device *pdev,
		struct bcl_device *bcl_perph)
		{
		bcl_ibat_init(pdev, BCL_IBAT_LVL0, bcl_perph);
		bcl_ibat_init(pdev, BCL_IBAT_LVL1, bcl_perph);
		}

		static void bcl_lvl_init(struct platform_device *pdev,
		enum bcl_dev_type type, int sts_bit_idx, struct bcl_device *bcl_perph)
		{
		struct bcl_peripheral_data *lbat = &bcl_perph->param[type];

		mutex_init(&lbat->state_trans_lock);
		lbat->type = type;
		lbat->dev = bcl_perph;
		lbat->status_bit_idx = sts_bit_idx;
		bcl_fetch_trip(pdev, type, lbat, bcl_handle_irq);
		if (lbat->irq_num <= 0)
		return;

		lbat->ops.get_temp = bcl_read_lbat;
		lbat->ops.set_trips = bcl_set_lbat;

		lbat->tz_dev = thermal_zone_of_sensor_register(&pdev->dev,
		type, lbat, &lbat->ops);
		if (IS_ERR(lbat->tz_dev)) {
		pr_debug("lbat:[%s] register failed. err:%ld\n",
		bcl_int_names[type],
		PTR_ERR(lbat->tz_dev));
		lbat->tz_dev = NULL;
		return;
		}
		thermal_zone_device_update(lbat->tz_dev, THERMAL_DEVICE_UP);
		}

		static void bcl_probe_lvls(struct platform_device *pdev,
		struct bcl_device *bcl_perph)
		{
		bcl_lvl_init(pdev, BCL_LVL0, BCL_IRQ_L0, bcl_perph);
		bcl_lvl_init(pdev, BCL_LVL1, BCL_IRQ_L1, bcl_perph);
		bcl_lvl_init(pdev, BCL_LVL2, BCL_IRQ_L2, bcl_perph);
		}

		static void bcl_configure_bcl_peripheral(struct bcl_device *bcl_perph)
		{
		bcl_write_register(bcl_perph, BCL_MONITOR_EN, BIT(7));
		}

		static int bcl_remove(struct platform_device *pdev)
		{
		int i = 0;
		struct bcl_device *bcl_perph =
		(struct bcl_device *)dev_get_drvdata(&pdev->dev);

		for (; i < BCL_TYPE_MAX; i++) {
		if (!bcl_perph->param[i].tz_dev)
		continue;
		thermal_zone_of_sensor_unregister(&pdev->dev,
		bcl_perph->param[i].tz_dev);
		}

		return 0;
		}

		static int bcl_probe(struct platform_device *pdev)
		{
		struct bcl_device *bcl_perph = NULL;

		if (bcl_device_ct >= MAX_PERPH_COUNT) {
		dev_err(&pdev->dev, "Max bcl peripheral supported already.\n");
		return -EINVAL;
		}
		bcl_devices[bcl_device_ct] = devm_kzalloc(&pdev->dev,
		sizeof(*bcl_devices[0]), GFP_KERNEL);
		if (!bcl_devices[bcl_device_ct])
		return -ENOMEM;
		bcl_perph = bcl_devices[bcl_device_ct];
		bcl_perph->dev = &pdev->dev;

		bcl_perph->regmap = dev_get_regmap(pdev->dev.parent, NULL);
		if (!bcl_perph->regmap) {
		dev_err(&pdev->dev, "Couldn't get parent's regmap\n");
		return -EINVAL;
		}

		bcl_device_ct++;
		bcl_get_devicetree_data(pdev, bcl_perph);
		bcl_probe_vbat(pdev, bcl_perph);
		bcl_probe_ibat(pdev, bcl_perph);
		bcl_probe_lvls(pdev, bcl_perph);
		bcl_configure_bcl_peripheral(bcl_perph);

		dev_set_drvdata(&pdev->dev, bcl_perph);

		return 0;
		}

		static const struct of_device_id bcl_match[] = {
		{
		.compatible = "qcom,bcl-v5",
		},
		{},
		};

		static struct platform_driver bcl_driver = {
		.probe = bcl_probe,
		.remove = bcl_remove,
		.driver = {
		.name = BCL_DRIVER_NAME,
		.of_match_table = bcl_match,
		},
		};

		module_platform_driver(bcl_driver);
		MODULE_LICENSE("GPL v2");

drivers/thermal/qcom/bcl_soc.c

0 → 100644

+189 −0

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-only
		/*
		* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
		*/

		#define pr_fmt(fmt) "%s:%s " fmt, KBUILD_MODNAME, __func__

		#include <linux/module.h>
		#include <linux/workqueue.h>
		#include <linux/kernel.h>
		#include <linux/io.h>
		#include <linux/err.h>
		#include <linux/of.h>
		#include <linux/platform_device.h>
		#include <linux/mutex.h>
		#include <linux/power_supply.h>
		#include <linux/thermal.h>

		#include "../thermal_core.h"

		#define BCL_DRIVER_NAME "bcl_soc_peripheral"

		struct bcl_device {
		struct device *dev;
		struct notifier_block psy_nb;
		struct work_struct soc_eval_work;
		long trip_temp;
		int trip_val;
		struct mutex state_trans_lock;
		bool irq_enabled;
		struct thermal_zone_device *tz_dev;
		struct thermal_zone_of_device_ops ops;
		};

		static struct bcl_device *bcl_perph;

		static int bcl_set_soc(void *data, int low, int high)
		{
		if (low == bcl_perph->trip_temp)
		return 0;

		mutex_lock(&bcl_perph->state_trans_lock);
		pr_debug("low soc threshold:%d\n", low);
		bcl_perph->trip_temp = low;
		if (low == INT_MIN) {
		bcl_perph->irq_enabled = false;
		goto unlock_and_exit;
		}
		bcl_perph->irq_enabled = true;
		schedule_work(&bcl_perph->soc_eval_work);

		unlock_and_exit:
		mutex_unlock(&bcl_perph->state_trans_lock);
		return 0;
		}

		static int bcl_read_soc(void data, int val)
		{
		static struct power_supply *batt_psy;
		union power_supply_propval ret = {0,};
		int err = 0;

		*val = 100;
		if (!batt_psy)
		batt_psy = power_supply_get_by_name("battery");
		if (batt_psy) {
		err = power_supply_get_property(batt_psy,
		POWER_SUPPLY_PROP_CAPACITY, &ret);
		if (err) {
		pr_err("battery percentage read error:%d\n",
		err);
		return err;
		}
		*val = ret.intval;
		}
		pr_debug("soc:%d\n", *val);

		return err;
		}

		static void bcl_evaluate_soc(struct work_struct *work)
		{
		int battery_percentage;

		if (!bcl_perph->tz_dev)
		return;

		if (bcl_read_soc(NULL, &battery_percentage))
		return;

		mutex_lock(&bcl_perph->state_trans_lock);
		if (!bcl_perph->irq_enabled)
		goto eval_exit;
		if (battery_percentage > bcl_perph->trip_temp)
		goto eval_exit;

		bcl_perph->trip_val = battery_percentage;
		mutex_unlock(&bcl_perph->state_trans_lock);
		of_thermal_handle_trip_temp(bcl_perph->dev,
		bcl_perph->tz_dev, bcl_perph->trip_val);

		return;
		eval_exit:
		mutex_unlock(&bcl_perph->state_trans_lock);
		}

		static int battery_supply_callback(struct notifier_block *nb,
		unsigned long event, void *data)
		{
		struct power_supply *psy = data;

		if (strcmp(psy->desc->name, "battery"))
		return NOTIFY_OK;
		schedule_work(&bcl_perph->soc_eval_work);

		return NOTIFY_OK;
		}

		static int bcl_soc_remove(struct platform_device *pdev)
		{
		power_supply_unreg_notifier(&bcl_perph->psy_nb);
		flush_work(&bcl_perph->soc_eval_work);
		if (bcl_perph->tz_dev)
		thermal_zone_of_sensor_unregister(&pdev->dev,
		bcl_perph->tz_dev);

		return 0;
		}

		static int bcl_soc_probe(struct platform_device *pdev)
		{
		int ret = 0;

		bcl_perph = devm_kzalloc(&pdev->dev, sizeof(*bcl_perph), GFP_KERNEL);
		if (!bcl_perph)
		return -ENOMEM;

		mutex_init(&bcl_perph->state_trans_lock);
		bcl_perph->dev = &pdev->dev;
		bcl_perph->ops.get_temp = bcl_read_soc;
		bcl_perph->ops.set_trips = bcl_set_soc;
		INIT_WORK(&bcl_perph->soc_eval_work, bcl_evaluate_soc);
		bcl_perph->psy_nb.notifier_call = battery_supply_callback;
		ret = power_supply_reg_notifier(&bcl_perph->psy_nb);
		if (ret < 0) {
		pr_err("soc notifier registration error. defer. err:%d\n",
		ret);
		ret = -EPROBE_DEFER;
		goto bcl_soc_probe_exit;
		}
		bcl_perph->tz_dev = thermal_zone_of_sensor_register(&pdev->dev,
		0, bcl_perph, &bcl_perph->ops);
		if (IS_ERR(bcl_perph->tz_dev)) {
		pr_err("soc TZ register failed. err:%ld\n",
		PTR_ERR(bcl_perph->tz_dev));
		ret = PTR_ERR(bcl_perph->tz_dev);
		bcl_perph->tz_dev = NULL;
		goto bcl_soc_probe_exit;
		}
		thermal_zone_device_update(bcl_perph->tz_dev, THERMAL_DEVICE_UP);
		schedule_work(&bcl_perph->soc_eval_work);

		dev_set_drvdata(&pdev->dev, bcl_perph);

		return 0;

		bcl_soc_probe_exit:
		bcl_soc_remove(pdev);
		return ret;
		}

		static const struct of_device_id bcl_match[] = {
		{
		.compatible = "qcom,msm-bcl-soc",
		},
		{},
		};

		static struct platform_driver bcl_driver = {
		.probe = bcl_soc_probe,
		.remove = bcl_soc_remove,
		.driver = {
		.name = BCL_DRIVER_NAME,
		.of_match_table = bcl_match,
		},
		};

		module_platform_driver(bcl_driver);
		MODULE_LICENSE("GPL v2");

drivers/thermal/qcom/qmi_sensors.c

0 → 100644

+724 −0

File added.

Preview size limit exceeded, changes collapsed.