forked from luck/tmp_suning_uos_patched
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal
Pull thermal SoC updates from Eduardo Valentin: "This is a really small pull in the midst of a lot of pending patches. We are in the middle of restructuring how we are maintaining the thermal subsystem, as per discussion in our last LPC. For now, I am sending just some changes that were pending in my tree. Looking forward to get a more streamlined process in the next merge window" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal: thermal: db8500: Rewrite to be a pure OF sensor thermal: db8500: Use dev helper variable thermal: db8500: Finalize device tree conversion thermal: thermal_mmio: remove some dead code
This commit is contained in:
Linus Torvalds
commit
939ca9f175
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@ -36,7 +36,6 @@
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#include <linux/regulator/db8500-prcmu.h>
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#include <linux/regulator/machine.h>
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#include <linux/platform_data/ux500_wdt.h>
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#include <linux/platform_data/db8500_thermal.h>
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#include "dbx500-prcmu-regs.h"
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/* Index of different voltages to be used when accessing AVSData */
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@ -3014,53 +3013,6 @@ static struct ux500_wdt_data db8500_wdt_pdata = {
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.timeout = 600, /* 10 minutes */
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.has_28_bits_resolution = true,
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};
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/*
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* Thermal Sensor
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*/
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static struct resource db8500_thsens_resources[] = {
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{
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.name = "IRQ_HOTMON_LOW",
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.start = IRQ_PRCMU_HOTMON_LOW,
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.end = IRQ_PRCMU_HOTMON_LOW,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "IRQ_HOTMON_HIGH",
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.start = IRQ_PRCMU_HOTMON_HIGH,
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.end = IRQ_PRCMU_HOTMON_HIGH,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct db8500_thsens_platform_data db8500_thsens_data = {
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.trip_points[0] = {
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.temp = 70000,
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.type = THERMAL_TRIP_ACTIVE,
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.cdev_name = {
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[0] = "thermal-cpufreq-0",
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},
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},
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.trip_points[1] = {
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.temp = 75000,
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.type = THERMAL_TRIP_ACTIVE,
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.cdev_name = {
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[0] = "thermal-cpufreq-0",
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},
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},
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.trip_points[2] = {
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.temp = 80000,
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.type = THERMAL_TRIP_ACTIVE,
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.cdev_name = {
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[0] = "thermal-cpufreq-0",
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},
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},
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.trip_points[3] = {
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.temp = 85000,
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.type = THERMAL_TRIP_CRITICAL,
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},
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.num_trips = 4,
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};
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static const struct mfd_cell common_prcmu_devs[] = {
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{
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@ -3084,10 +3036,7 @@ static const struct mfd_cell db8500_prcmu_devs[] = {
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},
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{
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.name = "db8500-thermal",
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.num_resources = ARRAY_SIZE(db8500_thsens_resources),
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.resources = db8500_thsens_resources,
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.platform_data = &db8500_thsens_data,
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.pdata_size = sizeof(db8500_thsens_data),
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.of_compatible = "stericsson,db8500-thermal",
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},
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};
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@ -310,7 +310,7 @@ config DOVE_THERMAL
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config DB8500_THERMAL
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tristate "DB8500 thermal management"
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depends on MFD_DB8500_PRCMU
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depends on MFD_DB8500_PRCMU && OF
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default y
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help
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Adds DB8500 thermal management implementation according to the thermal
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@ -3,9 +3,9 @@
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* db8500_thermal.c - DB8500 Thermal Management Implementation
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*
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* Copyright (C) 2012 ST-Ericsson
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* Copyright (C) 2012 Linaro Ltd.
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* Copyright (C) 2012-2019 Linaro Ltd.
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*
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* Author: Hongbo Zhang <hongbo.zhang@linaro.com>
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* Authors: Hongbo Zhang, Linus Walleij
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*/
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#include <linux/cpu_cooling.h>
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@ -13,7 +13,6 @@
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#include <linux/mfd/dbx500-prcmu.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/platform_data/db8500_thermal.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/thermal.h>
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@ -21,453 +20,201 @@
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#define PRCMU_DEFAULT_MEASURE_TIME 0xFFF
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#define PRCMU_DEFAULT_LOW_TEMP 0
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/**
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* db8500_thermal_points - the interpolation points that trigger
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* interrupts
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*/
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static const unsigned long db8500_thermal_points[] = {
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15000,
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20000,
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25000,
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30000,
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35000,
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40000,
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45000,
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50000,
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55000,
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60000,
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65000,
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70000,
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75000,
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80000,
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/*
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* This is where things start to get really bad for the
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* SoC and the thermal zones should be set up to trigger
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* critical temperature at 85000 mC so we don't get above
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* this point.
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*/
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85000,
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90000,
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95000,
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100000,
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};
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struct db8500_thermal_zone {
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struct thermal_zone_device *therm_dev;
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struct mutex th_lock;
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struct work_struct therm_work;
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struct db8500_thsens_platform_data *trip_tab;
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enum thermal_device_mode mode;
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struct thermal_zone_device *tz;
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enum thermal_trend trend;
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unsigned long cur_temp_pseudo;
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unsigned long interpolated_temp;
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unsigned int cur_index;
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};
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/* Local function to check if thermal zone matches cooling devices */
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static int db8500_thermal_match_cdev(struct thermal_cooling_device *cdev,
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struct db8500_trip_point *trip_point)
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{
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int i;
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if (!strlen(cdev->type))
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return -EINVAL;
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for (i = 0; i < COOLING_DEV_MAX; i++) {
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if (!strcmp(trip_point->cdev_name[i], cdev->type))
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return 0;
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}
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return -ENODEV;
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}
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/* Callback to bind cooling device to thermal zone */
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static int db8500_cdev_bind(struct thermal_zone_device *thermal,
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struct thermal_cooling_device *cdev)
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{
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struct db8500_thermal_zone *pzone = thermal->devdata;
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struct db8500_thsens_platform_data *ptrips = pzone->trip_tab;
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unsigned long max_state, upper, lower;
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int i, ret = -EINVAL;
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cdev->ops->get_max_state(cdev, &max_state);
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for (i = 0; i < ptrips->num_trips; i++) {
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if (db8500_thermal_match_cdev(cdev, &ptrips->trip_points[i]))
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continue;
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upper = lower = i > max_state ? max_state : i;
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ret = thermal_zone_bind_cooling_device(thermal, i, cdev,
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upper, lower, THERMAL_WEIGHT_DEFAULT);
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dev_info(&cdev->device, "%s bind to %d: %d-%s\n", cdev->type,
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i, ret, ret ? "fail" : "succeed");
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}
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return ret;
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}
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/* Callback to unbind cooling device from thermal zone */
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static int db8500_cdev_unbind(struct thermal_zone_device *thermal,
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struct thermal_cooling_device *cdev)
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{
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struct db8500_thermal_zone *pzone = thermal->devdata;
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struct db8500_thsens_platform_data *ptrips = pzone->trip_tab;
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int i, ret = -EINVAL;
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for (i = 0; i < ptrips->num_trips; i++) {
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if (db8500_thermal_match_cdev(cdev, &ptrips->trip_points[i]))
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continue;
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ret = thermal_zone_unbind_cooling_device(thermal, i, cdev);
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dev_info(&cdev->device, "%s unbind from %d: %s\n", cdev->type,
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i, ret ? "fail" : "succeed");
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}
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return ret;
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}
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/* Callback to get current temperature */
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static int db8500_sys_get_temp(struct thermal_zone_device *thermal, int *temp)
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static int db8500_thermal_get_temp(void *data, int *temp)
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{
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struct db8500_thermal_zone *pzone = thermal->devdata;
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struct db8500_thermal_zone *th = data;
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/*
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* TODO: There is no PRCMU interface to get temperature data currently,
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* so a pseudo temperature is returned , it works for thermal framework
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* and this will be fixed when the PRCMU interface is available.
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*/
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*temp = pzone->cur_temp_pseudo;
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*temp = th->interpolated_temp;
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return 0;
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}
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/* Callback to get temperature changing trend */
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static int db8500_sys_get_trend(struct thermal_zone_device *thermal,
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int trip, enum thermal_trend *trend)
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static int db8500_thermal_get_trend(void *data, int trip, enum thermal_trend *trend)
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{
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struct db8500_thermal_zone *pzone = thermal->devdata;
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struct db8500_thermal_zone *th = data;
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*trend = pzone->trend;
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*trend = th->trend;
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return 0;
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}
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/* Callback to get thermal zone mode */
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static int db8500_sys_get_mode(struct thermal_zone_device *thermal,
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enum thermal_device_mode *mode)
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{
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struct db8500_thermal_zone *pzone = thermal->devdata;
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mutex_lock(&pzone->th_lock);
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*mode = pzone->mode;
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mutex_unlock(&pzone->th_lock);
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return 0;
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}
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/* Callback to set thermal zone mode */
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static int db8500_sys_set_mode(struct thermal_zone_device *thermal,
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enum thermal_device_mode mode)
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{
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struct db8500_thermal_zone *pzone = thermal->devdata;
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mutex_lock(&pzone->th_lock);
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pzone->mode = mode;
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if (mode == THERMAL_DEVICE_ENABLED)
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schedule_work(&pzone->therm_work);
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mutex_unlock(&pzone->th_lock);
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return 0;
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}
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/* Callback to get trip point type */
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static int db8500_sys_get_trip_type(struct thermal_zone_device *thermal,
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int trip, enum thermal_trip_type *type)
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{
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struct db8500_thermal_zone *pzone = thermal->devdata;
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struct db8500_thsens_platform_data *ptrips = pzone->trip_tab;
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if (trip >= ptrips->num_trips)
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return -EINVAL;
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*type = ptrips->trip_points[trip].type;
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return 0;
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}
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/* Callback to get trip point temperature */
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static int db8500_sys_get_trip_temp(struct thermal_zone_device *thermal,
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int trip, int *temp)
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{
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struct db8500_thermal_zone *pzone = thermal->devdata;
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struct db8500_thsens_platform_data *ptrips = pzone->trip_tab;
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if (trip >= ptrips->num_trips)
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return -EINVAL;
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*temp = ptrips->trip_points[trip].temp;
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return 0;
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}
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/* Callback to get critical trip point temperature */
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static int db8500_sys_get_crit_temp(struct thermal_zone_device *thermal,
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int *temp)
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{
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struct db8500_thermal_zone *pzone = thermal->devdata;
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struct db8500_thsens_platform_data *ptrips = pzone->trip_tab;
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int i;
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|
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for (i = ptrips->num_trips - 1; i > 0; i--) {
|
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if (ptrips->trip_points[i].type == THERMAL_TRIP_CRITICAL) {
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*temp = ptrips->trip_points[i].temp;
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return 0;
|
||||
}
|
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}
|
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|
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return -EINVAL;
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}
|
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|
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static struct thermal_zone_device_ops thdev_ops = {
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.bind = db8500_cdev_bind,
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.unbind = db8500_cdev_unbind,
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.get_temp = db8500_sys_get_temp,
|
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.get_trend = db8500_sys_get_trend,
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.get_mode = db8500_sys_get_mode,
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.set_mode = db8500_sys_set_mode,
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.get_trip_type = db8500_sys_get_trip_type,
|
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.get_trip_temp = db8500_sys_get_trip_temp,
|
||||
.get_crit_temp = db8500_sys_get_crit_temp,
|
||||
static struct thermal_zone_of_device_ops thdev_ops = {
|
||||
.get_temp = db8500_thermal_get_temp,
|
||||
.get_trend = db8500_thermal_get_trend,
|
||||
};
|
||||
|
||||
static void db8500_thermal_update_config(struct db8500_thermal_zone *pzone,
|
||||
unsigned int idx, enum thermal_trend trend,
|
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unsigned long next_low, unsigned long next_high)
|
||||
static void db8500_thermal_update_config(struct db8500_thermal_zone *th,
|
||||
unsigned int idx,
|
||||
enum thermal_trend trend,
|
||||
unsigned long next_low,
|
||||
unsigned long next_high)
|
||||
{
|
||||
prcmu_stop_temp_sense();
|
||||
|
||||
pzone->cur_index = idx;
|
||||
pzone->cur_temp_pseudo = (next_low + next_high)/2;
|
||||
pzone->trend = trend;
|
||||
th->cur_index = idx;
|
||||
th->interpolated_temp = (next_low + next_high)/2;
|
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th->trend = trend;
|
||||
|
||||
/*
|
||||
* The PRCMU accept absolute temperatures in celsius so divide
|
||||
* down the millicelsius with 1000
|
||||
*/
|
||||
prcmu_config_hotmon((u8)(next_low/1000), (u8)(next_high/1000));
|
||||
prcmu_start_temp_sense(PRCMU_DEFAULT_MEASURE_TIME);
|
||||
}
|
||||
|
||||
static irqreturn_t prcmu_low_irq_handler(int irq, void *irq_data)
|
||||
{
|
||||
struct db8500_thermal_zone *pzone = irq_data;
|
||||
struct db8500_thsens_platform_data *ptrips = pzone->trip_tab;
|
||||
unsigned int idx = pzone->cur_index;
|
||||
struct db8500_thermal_zone *th = irq_data;
|
||||
unsigned int idx = th->cur_index;
|
||||
unsigned long next_low, next_high;
|
||||
|
||||
if (unlikely(idx == 0))
|
||||
if (idx == 0)
|
||||
/* Meaningless for thermal management, ignoring it */
|
||||
return IRQ_HANDLED;
|
||||
|
||||
if (idx == 1) {
|
||||
next_high = ptrips->trip_points[0].temp;
|
||||
next_high = db8500_thermal_points[0];
|
||||
next_low = PRCMU_DEFAULT_LOW_TEMP;
|
||||
} else {
|
||||
next_high = ptrips->trip_points[idx-1].temp;
|
||||
next_low = ptrips->trip_points[idx-2].temp;
|
||||
next_high = db8500_thermal_points[idx - 1];
|
||||
next_low = db8500_thermal_points[idx - 2];
|
||||
}
|
||||
idx -= 1;
|
||||
|
||||
db8500_thermal_update_config(pzone, idx, THERMAL_TREND_DROPPING,
|
||||
next_low, next_high);
|
||||
|
||||
dev_dbg(&pzone->therm_dev->device,
|
||||
db8500_thermal_update_config(th, idx, THERMAL_TREND_DROPPING,
|
||||
next_low, next_high);
|
||||
dev_dbg(&th->tz->device,
|
||||
"PRCMU set max %ld, min %ld\n", next_high, next_low);
|
||||
|
||||
schedule_work(&pzone->therm_work);
|
||||
thermal_zone_device_update(th->tz, THERMAL_EVENT_UNSPECIFIED);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static irqreturn_t prcmu_high_irq_handler(int irq, void *irq_data)
|
||||
{
|
||||
struct db8500_thermal_zone *pzone = irq_data;
|
||||
struct db8500_thsens_platform_data *ptrips = pzone->trip_tab;
|
||||
unsigned int idx = pzone->cur_index;
|
||||
struct db8500_thermal_zone *th = irq_data;
|
||||
unsigned int idx = th->cur_index;
|
||||
unsigned long next_low, next_high;
|
||||
int num_points = ARRAY_SIZE(db8500_thermal_points);
|
||||
|
||||
if (idx < ptrips->num_trips - 1) {
|
||||
next_high = ptrips->trip_points[idx+1].temp;
|
||||
next_low = ptrips->trip_points[idx].temp;
|
||||
if (idx < num_points - 1) {
|
||||
next_high = db8500_thermal_points[idx+1];
|
||||
next_low = db8500_thermal_points[idx];
|
||||
idx += 1;
|
||||
|
||||
db8500_thermal_update_config(pzone, idx, THERMAL_TREND_RAISING,
|
||||
next_low, next_high);
|
||||
db8500_thermal_update_config(th, idx, THERMAL_TREND_RAISING,
|
||||
next_low, next_high);
|
||||
|
||||
dev_dbg(&pzone->therm_dev->device,
|
||||
"PRCMU set max %ld, min %ld\n", next_high, next_low);
|
||||
} else if (idx == ptrips->num_trips - 1)
|
||||
pzone->cur_temp_pseudo = ptrips->trip_points[idx].temp + 1;
|
||||
dev_info(&th->tz->device,
|
||||
"PRCMU set max %ld, min %ld\n", next_high, next_low);
|
||||
} else if (idx == num_points - 1)
|
||||
/* So we roof out 1 degree over the max point */
|
||||
th->interpolated_temp = db8500_thermal_points[idx] + 1;
|
||||
|
||||
schedule_work(&pzone->therm_work);
|
||||
thermal_zone_device_update(th->tz, THERMAL_EVENT_UNSPECIFIED);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static void db8500_thermal_work(struct work_struct *work)
|
||||
{
|
||||
enum thermal_device_mode cur_mode;
|
||||
struct db8500_thermal_zone *pzone;
|
||||
|
||||
pzone = container_of(work, struct db8500_thermal_zone, therm_work);
|
||||
|
||||
mutex_lock(&pzone->th_lock);
|
||||
cur_mode = pzone->mode;
|
||||
mutex_unlock(&pzone->th_lock);
|
||||
|
||||
if (cur_mode == THERMAL_DEVICE_DISABLED)
|
||||
return;
|
||||
|
||||
thermal_zone_device_update(pzone->therm_dev, THERMAL_EVENT_UNSPECIFIED);
|
||||
dev_dbg(&pzone->therm_dev->device, "thermal work finished.\n");
|
||||
}
|
||||
|
||||
#ifdef CONFIG_OF
|
||||
static struct db8500_thsens_platform_data*
|
||||
db8500_thermal_parse_dt(struct platform_device *pdev)
|
||||
{
|
||||
struct db8500_thsens_platform_data *ptrips;
|
||||
struct device_node *np = pdev->dev.of_node;
|
||||
char prop_name[32];
|
||||
const char *tmp_str;
|
||||
u32 tmp_data;
|
||||
int i, j;
|
||||
|
||||
ptrips = devm_kzalloc(&pdev->dev, sizeof(*ptrips), GFP_KERNEL);
|
||||
if (!ptrips)
|
||||
return NULL;
|
||||
|
||||
if (of_property_read_u32(np, "num-trips", &tmp_data))
|
||||
goto err_parse_dt;
|
||||
|
||||
if (tmp_data > THERMAL_MAX_TRIPS)
|
||||
goto err_parse_dt;
|
||||
|
||||
ptrips->num_trips = tmp_data;
|
||||
|
||||
for (i = 0; i < ptrips->num_trips; i++) {
|
||||
sprintf(prop_name, "trip%d-temp", i);
|
||||
if (of_property_read_u32(np, prop_name, &tmp_data))
|
||||
goto err_parse_dt;
|
||||
|
||||
ptrips->trip_points[i].temp = tmp_data;
|
||||
|
||||
sprintf(prop_name, "trip%d-type", i);
|
||||
if (of_property_read_string(np, prop_name, &tmp_str))
|
||||
goto err_parse_dt;
|
||||
|
||||
if (!strcmp(tmp_str, "active"))
|
||||
ptrips->trip_points[i].type = THERMAL_TRIP_ACTIVE;
|
||||
else if (!strcmp(tmp_str, "passive"))
|
||||
ptrips->trip_points[i].type = THERMAL_TRIP_PASSIVE;
|
||||
else if (!strcmp(tmp_str, "hot"))
|
||||
ptrips->trip_points[i].type = THERMAL_TRIP_HOT;
|
||||
else if (!strcmp(tmp_str, "critical"))
|
||||
ptrips->trip_points[i].type = THERMAL_TRIP_CRITICAL;
|
||||
else
|
||||
goto err_parse_dt;
|
||||
|
||||
sprintf(prop_name, "trip%d-cdev-num", i);
|
||||
if (of_property_read_u32(np, prop_name, &tmp_data))
|
||||
goto err_parse_dt;
|
||||
|
||||
if (tmp_data > COOLING_DEV_MAX)
|
||||
goto err_parse_dt;
|
||||
|
||||
for (j = 0; j < tmp_data; j++) {
|
||||
sprintf(prop_name, "trip%d-cdev-name%d", i, j);
|
||||
if (of_property_read_string(np, prop_name, &tmp_str))
|
||||
goto err_parse_dt;
|
||||
|
||||
if (strlen(tmp_str) >= THERMAL_NAME_LENGTH)
|
||||
goto err_parse_dt;
|
||||
|
||||
strcpy(ptrips->trip_points[i].cdev_name[j], tmp_str);
|
||||
}
|
||||
}
|
||||
return ptrips;
|
||||
|
||||
err_parse_dt:
|
||||
dev_err(&pdev->dev, "Parsing device tree data error.\n");
|
||||
return NULL;
|
||||
}
|
||||
#else
|
||||
static inline struct db8500_thsens_platform_data*
|
||||
db8500_thermal_parse_dt(struct platform_device *pdev)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
#endif
|
||||
|
||||
static int db8500_thermal_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct db8500_thermal_zone *pzone = NULL;
|
||||
struct db8500_thsens_platform_data *ptrips = NULL;
|
||||
struct device_node *np = pdev->dev.of_node;
|
||||
struct db8500_thermal_zone *th = NULL;
|
||||
struct device *dev = &pdev->dev;
|
||||
int low_irq, high_irq, ret = 0;
|
||||
unsigned long dft_low, dft_high;
|
||||
|
||||
if (np)
|
||||
ptrips = db8500_thermal_parse_dt(pdev);
|
||||
else
|
||||
ptrips = dev_get_platdata(&pdev->dev);
|
||||
|
||||
if (!ptrips)
|
||||
return -EINVAL;
|
||||
|
||||
pzone = devm_kzalloc(&pdev->dev, sizeof(*pzone), GFP_KERNEL);
|
||||
if (!pzone)
|
||||
th = devm_kzalloc(dev, sizeof(*th), GFP_KERNEL);
|
||||
if (!th)
|
||||
return -ENOMEM;
|
||||
|
||||
mutex_init(&pzone->th_lock);
|
||||
mutex_lock(&pzone->th_lock);
|
||||
|
||||
pzone->mode = THERMAL_DEVICE_DISABLED;
|
||||
pzone->trip_tab = ptrips;
|
||||
|
||||
INIT_WORK(&pzone->therm_work, db8500_thermal_work);
|
||||
|
||||
low_irq = platform_get_irq_byname(pdev, "IRQ_HOTMON_LOW");
|
||||
if (low_irq < 0) {
|
||||
dev_err(&pdev->dev, "Get IRQ_HOTMON_LOW failed.\n");
|
||||
ret = low_irq;
|
||||
goto out_unlock;
|
||||
dev_err(dev, "Get IRQ_HOTMON_LOW failed\n");
|
||||
return low_irq;
|
||||
}
|
||||
|
||||
ret = devm_request_threaded_irq(&pdev->dev, low_irq, NULL,
|
||||
ret = devm_request_threaded_irq(dev, low_irq, NULL,
|
||||
prcmu_low_irq_handler, IRQF_NO_SUSPEND | IRQF_ONESHOT,
|
||||
"dbx500_temp_low", pzone);
|
||||
"dbx500_temp_low", th);
|
||||
if (ret < 0) {
|
||||
dev_err(&pdev->dev, "Failed to allocate temp low irq.\n");
|
||||
goto out_unlock;
|
||||
dev_err(dev, "failed to allocate temp low irq\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
high_irq = platform_get_irq_byname(pdev, "IRQ_HOTMON_HIGH");
|
||||
if (high_irq < 0) {
|
||||
dev_err(&pdev->dev, "Get IRQ_HOTMON_HIGH failed.\n");
|
||||
ret = high_irq;
|
||||
goto out_unlock;
|
||||
dev_err(dev, "Get IRQ_HOTMON_HIGH failed\n");
|
||||
return high_irq;
|
||||
}
|
||||
|
||||
ret = devm_request_threaded_irq(&pdev->dev, high_irq, NULL,
|
||||
ret = devm_request_threaded_irq(dev, high_irq, NULL,
|
||||
prcmu_high_irq_handler, IRQF_NO_SUSPEND | IRQF_ONESHOT,
|
||||
"dbx500_temp_high", pzone);
|
||||
"dbx500_temp_high", th);
|
||||
if (ret < 0) {
|
||||
dev_err(&pdev->dev, "Failed to allocate temp high irq.\n");
|
||||
goto out_unlock;
|
||||
dev_err(dev, "failed to allocate temp high irq\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
pzone->therm_dev = thermal_zone_device_register("db8500_thermal_zone",
|
||||
ptrips->num_trips, 0, pzone, &thdev_ops, NULL, 0, 0);
|
||||
|
||||
if (IS_ERR(pzone->therm_dev)) {
|
||||
dev_err(&pdev->dev, "Register thermal zone device failed.\n");
|
||||
ret = PTR_ERR(pzone->therm_dev);
|
||||
goto out_unlock;
|
||||
/* register of thermal sensor and get info from DT */
|
||||
th->tz = devm_thermal_zone_of_sensor_register(dev, 0, th, &thdev_ops);
|
||||
if (IS_ERR(th->tz)) {
|
||||
dev_err(dev, "register thermal zone sensor failed\n");
|
||||
return PTR_ERR(th->tz);
|
||||
}
|
||||
dev_info(&pdev->dev, "Thermal zone device registered.\n");
|
||||
dev_info(dev, "thermal zone sensor registered\n");
|
||||
|
||||
dft_low = PRCMU_DEFAULT_LOW_TEMP;
|
||||
dft_high = ptrips->trip_points[0].temp;
|
||||
/* Start measuring at the lowest point */
|
||||
db8500_thermal_update_config(th, 0, THERMAL_TREND_STABLE,
|
||||
PRCMU_DEFAULT_LOW_TEMP,
|
||||
db8500_thermal_points[0]);
|
||||
|
||||
db8500_thermal_update_config(pzone, 0, THERMAL_TREND_STABLE,
|
||||
dft_low, dft_high);
|
||||
|
||||
platform_set_drvdata(pdev, pzone);
|
||||
pzone->mode = THERMAL_DEVICE_ENABLED;
|
||||
|
||||
out_unlock:
|
||||
mutex_unlock(&pzone->th_lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int db8500_thermal_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct db8500_thermal_zone *pzone = platform_get_drvdata(pdev);
|
||||
|
||||
thermal_zone_device_unregister(pzone->therm_dev);
|
||||
cancel_work_sync(&pzone->therm_work);
|
||||
mutex_destroy(&pzone->th_lock);
|
||||
platform_set_drvdata(pdev, th);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -475,9 +222,6 @@ static int db8500_thermal_remove(struct platform_device *pdev)
|
|||
static int db8500_thermal_suspend(struct platform_device *pdev,
|
||||
pm_message_t state)
|
||||
{
|
||||
struct db8500_thermal_zone *pzone = platform_get_drvdata(pdev);
|
||||
|
||||
flush_work(&pzone->therm_work);
|
||||
prcmu_stop_temp_sense();
|
||||
|
||||
return 0;
|
||||
|
|
@ -485,26 +229,21 @@ static int db8500_thermal_suspend(struct platform_device *pdev,
|
|||
|
||||
static int db8500_thermal_resume(struct platform_device *pdev)
|
||||
{
|
||||
struct db8500_thermal_zone *pzone = platform_get_drvdata(pdev);
|
||||
struct db8500_thsens_platform_data *ptrips = pzone->trip_tab;
|
||||
unsigned long dft_low, dft_high;
|
||||
struct db8500_thermal_zone *th = platform_get_drvdata(pdev);
|
||||
|
||||
dft_low = PRCMU_DEFAULT_LOW_TEMP;
|
||||
dft_high = ptrips->trip_points[0].temp;
|
||||
|
||||
db8500_thermal_update_config(pzone, 0, THERMAL_TREND_STABLE,
|
||||
dft_low, dft_high);
|
||||
/* Resume and start measuring at the lowest point */
|
||||
db8500_thermal_update_config(th, 0, THERMAL_TREND_STABLE,
|
||||
PRCMU_DEFAULT_LOW_TEMP,
|
||||
db8500_thermal_points[0]);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_OF
|
||||
static const struct of_device_id db8500_thermal_match[] = {
|
||||
{ .compatible = "stericsson,db8500-thermal" },
|
||||
{},
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, db8500_thermal_match);
|
||||
#endif
|
||||
|
||||
static struct platform_driver db8500_thermal_driver = {
|
||||
.driver = {
|
||||
|
|
@ -514,7 +253,6 @@ static struct platform_driver db8500_thermal_driver = {
|
|||
.probe = db8500_thermal_probe,
|
||||
.suspend = db8500_thermal_suspend,
|
||||
.resume = db8500_thermal_resume,
|
||||
.remove = db8500_thermal_remove,
|
||||
};
|
||||
|
||||
module_platform_driver(db8500_thermal_driver);
|
||||
|
|
|
|||
|
|
@ -53,13 +53,6 @@ static int thermal_mmio_probe(struct platform_device *pdev)
|
|||
return -ENOMEM;
|
||||
|
||||
resource = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (IS_ERR(resource)) {
|
||||
dev_err(&pdev->dev,
|
||||
"fail to get platform memory resource (%ld)\n",
|
||||
PTR_ERR(resource));
|
||||
return PTR_ERR(resource);
|
||||
}
|
||||
|
||||
sensor->mmio_base = devm_ioremap_resource(&pdev->dev, resource);
|
||||
if (IS_ERR(sensor->mmio_base)) {
|
||||
dev_err(&pdev->dev, "failed to ioremap memory (%ld)\n",
|
||||
|
|
|
|||
|
|
@ -1,29 +0,0 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
||||
/*
|
||||
* db8500_thermal.h - DB8500 Thermal Management Implementation
|
||||
*
|
||||
* Copyright (C) 2012 ST-Ericsson
|
||||
* Copyright (C) 2012 Linaro Ltd.
|
||||
*
|
||||
* Author: Hongbo Zhang <hongbo.zhang@linaro.com>
|
||||
*/
|
||||
|
||||
#ifndef _DB8500_THERMAL_H_
|
||||
#define _DB8500_THERMAL_H_
|
||||
|
||||
#include <linux/thermal.h>
|
||||
|
||||
#define COOLING_DEV_MAX 8
|
||||
|
||||
struct db8500_trip_point {
|
||||
unsigned long temp;
|
||||
enum thermal_trip_type type;
|
||||
char cdev_name[COOLING_DEV_MAX][THERMAL_NAME_LENGTH];
|
||||
};
|
||||
|
||||
struct db8500_thsens_platform_data {
|
||||
struct db8500_trip_point trip_points[THERMAL_MAX_TRIPS];
|
||||
int num_trips;
|
||||
};
|
||||
|
||||
#endif /* _DB8500_THERMAL_H_ */
|
||||
Loading…
Reference in New Issue
Block a user