diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-03-01 09:54:32 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-03-01 09:54:32 -0800 |
commit | 544a068f1f88da89254d2e334a7d4f0dc4ae9ab7 (patch) | |
tree | 8cefffc88c7e0f737ea76ff67125c5180abd1414 /drivers | |
parent | 545b2820c4a48245412d97030134cc1d38918726 (diff) | |
parent | 6fefe19f583625ca4ea3ecc9128baa51c31c60a4 (diff) | |
download | linux-544a068f1f88da89254d2e334a7d4f0dc4ae9ab7.tar.bz2 |
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management updates from Zhang Rui:
- add thermal driver for R-Car Gen3 thermal sensors.
- add thermal driver for ZTE' zx2967 family thermal sensors.
- convert thermal ID allocation from IDR to IDA.
- fix a possible NULL dereference in imx thermal driver.
- fix a ti-soc-thermal driver dependency issue so that critical thermal
control is still available when CPU_THERMAL is not defined.
- update binding information for QorIQ thermal driver.
- a couple of cleanups in thermal core, intel_powerclamp, exynos,
dra752-thermal, mtk-thermal driver.
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
powerpc/mpc85xx: Update TMU device tree node for T1023/T1024
powerpc/mpc85xx: Update TMU device tree node for T1040/T1042
dt-bindings: Update QorIQ TMU thermal bindings
thermal: mtk_thermal: Staticise a number of data variables
thermal: arm: dra752: Remove all TSHUT related definitions
thermal: arm: dra752: Remove TSHUT configuration
thermal: ti-soc-thermal: Remove CPU_THERMAL Dependency from TI_THERMAL
thermal: imx: Fix possible NULL dereference.
thermal: exynos: Remove parsing unused samsung,tmu_cal_mode property
thermal: zx2967: add thermal driver for ZTE's zx2967 family
thermal: use cpumask_var_t for on-stack cpu masks
dt: bindings: add documentation for zx2967 family thermal sensor
thermal/intel_powerclamp: Remove set-but-not-used variables
thermal: rcar_gen3_thermal: Add R-Car Gen3 thermal driver
thermal: rcar_gen3_thermal: Document the R-Car Gen3
thermal: convert devfreq_cooling to use an IDA
thermal: convert cpu_cooling to use an IDA
thermal: convert clock cooling to use an IDA
thermal core: convert ID allocation to IDA
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/thermal/Kconfig | 17 | ||||
-rw-r--r-- | drivers/thermal/Makefile | 2 | ||||
-rw-r--r-- | drivers/thermal/clock_cooling.c | 50 | ||||
-rw-r--r-- | drivers/thermal/cpu_cooling.c | 102 | ||||
-rw-r--r-- | drivers/thermal/devfreq_cooling.c | 53 | ||||
-rw-r--r-- | drivers/thermal/imx_thermal.c | 4 | ||||
-rw-r--r-- | drivers/thermal/intel_powerclamp.c | 4 | ||||
-rw-r--r-- | drivers/thermal/mtk_thermal.c | 16 | ||||
-rw-r--r-- | drivers/thermal/rcar_gen3_thermal.c | 335 | ||||
-rw-r--r-- | drivers/thermal/samsung/exynos_tmu.c | 1 | ||||
-rw-r--r-- | drivers/thermal/samsung/exynos_tmu.h | 1 | ||||
-rw-r--r-- | drivers/thermal/thermal_core.c | 75 | ||||
-rw-r--r-- | drivers/thermal/ti-soc-thermal/Kconfig | 1 | ||||
-rw-r--r-- | drivers/thermal/ti-soc-thermal/dra752-bandgap.h | 19 | ||||
-rw-r--r-- | drivers/thermal/ti-soc-thermal/dra752-thermal-data.c | 28 | ||||
-rw-r--r-- | drivers/thermal/zx2967_thermal.c | 258 |
16 files changed, 705 insertions, 261 deletions
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index c2c056cc7ea5..776b34396144 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -245,6 +245,15 @@ config RCAR_THERMAL Enable this to plug the R-Car thermal sensor driver into the Linux thermal framework. +config RCAR_GEN3_THERMAL + tristate "Renesas R-Car Gen3 thermal driver" + depends on ARCH_RENESAS || COMPILE_TEST + depends on HAS_IOMEM + depends on OF + help + Enable this to plug the R-Car Gen3 thermal sensor driver into the Linux + thermal framework. + config KIRKWOOD_THERMAL tristate "Temperature sensor on Marvell Kirkwood SoCs" depends on MACH_KIRKWOOD || COMPILE_TEST @@ -436,4 +445,12 @@ depends on (ARCH_QCOM && OF) || COMPILE_TEST source "drivers/thermal/qcom/Kconfig" endmenu +config ZX2967_THERMAL + tristate "Thermal sensors on zx2967 SoC" + depends on ARCH_ZX || COMPILE_TEST + help + Enable the zx2967 thermal sensors driver, which supports + the primitive temperature sensor embedded in zx2967 SoCs. + This sensor generates the real time die temperature. + endif diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index 6a3d7b573036..7adae2029355 100644 --- a/drivers/thermal/Makefile +++ b/drivers/thermal/Makefile @@ -31,6 +31,7 @@ obj-$(CONFIG_QCOM_SPMI_TEMP_ALARM) += qcom-spmi-temp-alarm.o obj-$(CONFIG_SPEAR_THERMAL) += spear_thermal.o obj-$(CONFIG_ROCKCHIP_THERMAL) += rockchip_thermal.o obj-$(CONFIG_RCAR_THERMAL) += rcar_thermal.o +obj-$(CONFIG_RCAR_GEN3_THERMAL) += rcar_gen3_thermal.o obj-$(CONFIG_KIRKWOOD_THERMAL) += kirkwood_thermal.o obj-y += samsung/ obj-$(CONFIG_DOVE_THERMAL) += dove_thermal.o @@ -56,3 +57,4 @@ obj-$(CONFIG_TEGRA_SOCTHERM) += tegra/ obj-$(CONFIG_HISI_THERMAL) += hisi_thermal.o obj-$(CONFIG_MTK_THERMAL) += mtk_thermal.o obj-$(CONFIG_GENERIC_ADC_THERMAL) += thermal-generic-adc.o +obj-$(CONFIG_ZX2967_THERMAL) += zx2967_thermal.o diff --git a/drivers/thermal/clock_cooling.c b/drivers/thermal/clock_cooling.c index ed5dd0e88657..56711c25584d 100644 --- a/drivers/thermal/clock_cooling.c +++ b/drivers/thermal/clock_cooling.c @@ -65,42 +65,7 @@ struct clock_cooling_device { }; #define to_clock_cooling_device(x) \ container_of(x, struct clock_cooling_device, clk_rate_change_nb) -static DEFINE_IDR(clock_idr); -static DEFINE_MUTEX(cooling_clock_lock); - -/** - * clock_cooling_get_idr - function to get an unique id. - * @id: int * value generated by this function. - * - * This function will populate @id with an unique - * id, using the idr API. - * - * Return: 0 on success, an error code on failure. - */ -static int clock_cooling_get_idr(int *id) -{ - int ret; - - mutex_lock(&cooling_clock_lock); - ret = idr_alloc(&clock_idr, NULL, 0, 0, GFP_KERNEL); - mutex_unlock(&cooling_clock_lock); - if (unlikely(ret < 0)) - return ret; - *id = ret; - - return 0; -} - -/** - * release_idr - function to free the unique id. - * @id: int value representing the unique id. - */ -static void release_idr(int id) -{ - mutex_lock(&cooling_clock_lock); - idr_remove(&clock_idr, id); - mutex_unlock(&cooling_clock_lock); -} +static DEFINE_IDA(clock_ida); /* Below code defines functions to be used for clock as cooling device */ @@ -432,16 +397,17 @@ clock_cooling_register(struct device *dev, const char *clock_name) if (IS_ERR(ccdev->clk)) return ERR_CAST(ccdev->clk); - ret = clock_cooling_get_idr(&ccdev->id); - if (ret) - return ERR_PTR(-EINVAL); + ret = ida_simple_get(&clock_ida, 0, 0, GFP_KERNEL); + if (ret < 0) + return ERR_PTR(ret); + ccdev->id = ret; snprintf(dev_name, sizeof(dev_name), "thermal-clock-%d", ccdev->id); cdev = thermal_cooling_device_register(dev_name, ccdev, &clock_cooling_ops); if (IS_ERR(cdev)) { - release_idr(ccdev->id); + ida_simple_remove(&clock_ida, ccdev->id); return ERR_PTR(-EINVAL); } ccdev->cdev = cdev; @@ -450,7 +416,7 @@ clock_cooling_register(struct device *dev, const char *clock_name) /* Assuming someone has already filled the opp table for this device */ ret = dev_pm_opp_init_cpufreq_table(dev, &ccdev->freq_table); if (ret) { - release_idr(ccdev->id); + ida_simple_remove(&clock_ida, ccdev->id); return ERR_PTR(ret); } ccdev->clock_state = 0; @@ -481,6 +447,6 @@ void clock_cooling_unregister(struct thermal_cooling_device *cdev) dev_pm_opp_free_cpufreq_table(ccdev->dev, &ccdev->freq_table); thermal_cooling_device_unregister(ccdev->cdev); - release_idr(ccdev->id); + ida_simple_remove(&clock_ida, ccdev->id); } EXPORT_SYMBOL_GPL(clock_cooling_unregister); diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c index 85fdbf762fa0..91048eeca28b 100644 --- a/drivers/thermal/cpu_cooling.c +++ b/drivers/thermal/cpu_cooling.c @@ -26,6 +26,7 @@ #include <linux/thermal.h> #include <linux/cpufreq.h> #include <linux/err.h> +#include <linux/idr.h> #include <linux/pm_opp.h> #include <linux/slab.h> #include <linux/cpu.h> @@ -104,50 +105,13 @@ struct cpufreq_cooling_device { struct device *cpu_dev; get_static_t plat_get_static_power; }; -static DEFINE_IDR(cpufreq_idr); -static DEFINE_MUTEX(cooling_cpufreq_lock); +static DEFINE_IDA(cpufreq_ida); static unsigned int cpufreq_dev_count; static DEFINE_MUTEX(cooling_list_lock); static LIST_HEAD(cpufreq_dev_list); -/** - * get_idr - function to get a unique id. - * @idr: struct idr * handle used to create a id. - * @id: int * value generated by this function. - * - * This function will populate @id with an unique - * id, using the idr API. - * - * Return: 0 on success, an error code on failure. - */ -static int get_idr(struct idr *idr, int *id) -{ - int ret; - - mutex_lock(&cooling_cpufreq_lock); - ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL); - mutex_unlock(&cooling_cpufreq_lock); - if (unlikely(ret < 0)) - return ret; - *id = ret; - - return 0; -} - -/** - * release_idr - function to free the unique id. - * @idr: struct idr * handle used for creating the id. - * @id: int value representing the unique id. - */ -static void release_idr(struct idr *idr, int id) -{ - mutex_lock(&cooling_cpufreq_lock); - idr_remove(idr, id); - mutex_unlock(&cooling_cpufreq_lock); -} - /* Below code defines functions to be used for cpufreq as cooling device */ /** @@ -645,31 +609,39 @@ static int cpufreq_state2power(struct thermal_cooling_device *cdev, unsigned long state, u32 *power) { unsigned int freq, num_cpus; - cpumask_t cpumask; + cpumask_var_t cpumask; u32 static_power, dynamic_power; int ret; struct cpufreq_cooling_device *cpufreq_device = cdev->devdata; - cpumask_and(&cpumask, &cpufreq_device->allowed_cpus, cpu_online_mask); - num_cpus = cpumask_weight(&cpumask); + if (!alloc_cpumask_var(&cpumask, GFP_KERNEL)) + return -ENOMEM; + + cpumask_and(cpumask, &cpufreq_device->allowed_cpus, cpu_online_mask); + num_cpus = cpumask_weight(cpumask); /* None of our cpus are online, so no power */ if (num_cpus == 0) { *power = 0; - return 0; + ret = 0; + goto out; } freq = cpufreq_device->freq_table[state]; - if (!freq) - return -EINVAL; + if (!freq) { + ret = -EINVAL; + goto out; + } dynamic_power = cpu_freq_to_power(cpufreq_device, freq) * num_cpus; ret = get_static_power(cpufreq_device, tz, freq, &static_power); if (ret) - return ret; + goto out; *power = static_power + dynamic_power; - return 0; +out: + free_cpumask_var(cpumask); + return ret; } /** @@ -795,16 +767,20 @@ __cpufreq_cooling_register(struct device_node *np, struct cpufreq_cooling_device *cpufreq_dev; char dev_name[THERMAL_NAME_LENGTH]; struct cpufreq_frequency_table *pos, *table; - struct cpumask temp_mask; + cpumask_var_t temp_mask; unsigned int freq, i, num_cpus; int ret; struct thermal_cooling_device_ops *cooling_ops; - cpumask_and(&temp_mask, clip_cpus, cpu_online_mask); - policy = cpufreq_cpu_get(cpumask_first(&temp_mask)); + if (!alloc_cpumask_var(&temp_mask, GFP_KERNEL)) + return ERR_PTR(-ENOMEM); + + cpumask_and(temp_mask, clip_cpus, cpu_online_mask); + policy = cpufreq_cpu_get(cpumask_first(temp_mask)); if (!policy) { pr_debug("%s: CPUFreq policy not found\n", __func__); - return ERR_PTR(-EPROBE_DEFER); + cool_dev = ERR_PTR(-EPROBE_DEFER); + goto free_cpumask; } table = policy->freq_table; @@ -867,11 +843,12 @@ __cpufreq_cooling_register(struct device_node *np, cooling_ops = &cpufreq_cooling_ops; } - ret = get_idr(&cpufreq_idr, &cpufreq_dev->id); - if (ret) { + ret = ida_simple_get(&cpufreq_ida, 0, 0, GFP_KERNEL); + if (ret < 0) { cool_dev = ERR_PTR(ret); goto free_power_table; } + cpufreq_dev->id = ret; /* Fill freq-table in descending order of frequencies */ for (i = 0, freq = -1; i <= cpufreq_dev->max_level; i++) { @@ -891,27 +868,24 @@ __cpufreq_cooling_register(struct device_node *np, cool_dev = thermal_of_cooling_device_register(np, dev_name, cpufreq_dev, cooling_ops); if (IS_ERR(cool_dev)) - goto remove_idr; + goto remove_ida; cpufreq_dev->clipped_freq = cpufreq_dev->freq_table[0]; cpufreq_dev->cool_dev = cool_dev; - mutex_lock(&cooling_cpufreq_lock); - mutex_lock(&cooling_list_lock); list_add(&cpufreq_dev->node, &cpufreq_dev_list); - mutex_unlock(&cooling_list_lock); /* Register the notifier for first cpufreq cooling device */ if (!cpufreq_dev_count++) cpufreq_register_notifier(&thermal_cpufreq_notifier_block, CPUFREQ_POLICY_NOTIFIER); - mutex_unlock(&cooling_cpufreq_lock); + mutex_unlock(&cooling_list_lock); goto put_policy; -remove_idr: - release_idr(&cpufreq_idr, cpufreq_dev->id); +remove_ida: + ida_simple_remove(&cpufreq_ida, cpufreq_dev->id); free_power_table: kfree(cpufreq_dev->dyn_power_table); free_table: @@ -924,7 +898,8 @@ free_cdev: kfree(cpufreq_dev); put_policy: cpufreq_cpu_put(policy); - +free_cpumask: + free_cpumask_var(temp_mask); return cool_dev; } @@ -1052,20 +1027,17 @@ void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev) cpufreq_dev = cdev->devdata; + mutex_lock(&cooling_list_lock); /* Unregister the notifier for the last cpufreq cooling device */ - mutex_lock(&cooling_cpufreq_lock); if (!--cpufreq_dev_count) cpufreq_unregister_notifier(&thermal_cpufreq_notifier_block, CPUFREQ_POLICY_NOTIFIER); - mutex_lock(&cooling_list_lock); list_del(&cpufreq_dev->node); mutex_unlock(&cooling_list_lock); - mutex_unlock(&cooling_cpufreq_lock); - thermal_cooling_device_unregister(cpufreq_dev->cool_dev); - release_idr(&cpufreq_idr, cpufreq_dev->id); + ida_simple_remove(&cpufreq_ida, cpufreq_dev->id); kfree(cpufreq_dev->dyn_power_table); kfree(cpufreq_dev->time_in_idle_timestamp); kfree(cpufreq_dev->time_in_idle); diff --git a/drivers/thermal/devfreq_cooling.c b/drivers/thermal/devfreq_cooling.c index ba7a5cd994dc..7743a78d4723 100644 --- a/drivers/thermal/devfreq_cooling.c +++ b/drivers/thermal/devfreq_cooling.c @@ -21,14 +21,14 @@ #include <linux/devfreq.h> #include <linux/devfreq_cooling.h> #include <linux/export.h> +#include <linux/idr.h> #include <linux/slab.h> #include <linux/pm_opp.h> #include <linux/thermal.h> #include <trace/events/thermal.h> -static DEFINE_MUTEX(devfreq_lock); -static DEFINE_IDR(devfreq_idr); +static DEFINE_IDA(devfreq_ida); /** * struct devfreq_cooling_device - Devfreq cooling device @@ -58,42 +58,6 @@ struct devfreq_cooling_device { }; /** - * get_idr - function to get a unique id. - * @idr: struct idr * handle used to create a id. - * @id: int * value generated by this function. - * - * This function will populate @id with an unique - * id, using the idr API. - * - * Return: 0 on success, an error code on failure. - */ -static int get_idr(struct idr *idr, int *id) -{ - int ret; - - mutex_lock(&devfreq_lock); - ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL); - mutex_unlock(&devfreq_lock); - if (unlikely(ret < 0)) - return ret; - *id = ret; - - return 0; -} - -/** - * release_idr - function to free the unique id. - * @idr: struct idr * handle used for creating the id. - * @id: int value representing the unique id. - */ -static void release_idr(struct idr *idr, int id) -{ - mutex_lock(&devfreq_lock); - idr_remove(idr, id); - mutex_unlock(&devfreq_lock); -} - -/** * partition_enable_opps() - disable all opps above a given state * @dfc: Pointer to devfreq we are operating on * @cdev_state: cooling device state we're setting @@ -489,9 +453,10 @@ of_devfreq_cooling_register_power(struct device_node *np, struct devfreq *df, if (err) goto free_dfc; - err = get_idr(&devfreq_idr, &dfc->id); - if (err) + err = ida_simple_get(&devfreq_ida, 0, 0, GFP_KERNEL); + if (err < 0) goto free_tables; + dfc->id = err; snprintf(dev_name, sizeof(dev_name), "thermal-devfreq-%d", dfc->id); @@ -502,15 +467,15 @@ of_devfreq_cooling_register_power(struct device_node *np, struct devfreq *df, dev_err(df->dev.parent, "Failed to register devfreq cooling device (%d)\n", err); - goto release_idr; + goto release_ida; } dfc->cdev = cdev; return cdev; -release_idr: - release_idr(&devfreq_idr, dfc->id); +release_ida: + ida_simple_remove(&devfreq_ida, dfc->id); free_tables: kfree(dfc->power_table); kfree(dfc->freq_table); @@ -558,7 +523,7 @@ void devfreq_cooling_unregister(struct thermal_cooling_device *cdev) dfc = cdev->devdata; thermal_cooling_device_unregister(dfc->cdev); - release_idr(&devfreq_idr, dfc->id); + ida_simple_remove(&devfreq_ida, dfc->id); kfree(dfc->power_table); kfree(dfc->freq_table); diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c index 06912f0602b7..fb648a45754e 100644 --- a/drivers/thermal/imx_thermal.c +++ b/drivers/thermal/imx_thermal.c @@ -489,6 +489,10 @@ static int imx_thermal_probe(struct platform_device *pdev) data->tempmon = map; data->socdata = of_device_get_match_data(&pdev->dev); + if (!data->socdata) { + dev_err(&pdev->dev, "no device match found\n"); + return -ENODEV; + } /* make sure the IRQ flag is clear before enabling irq on i.MX6SX */ if (data->socdata->version == TEMPMON_IMX6SX) { diff --git a/drivers/thermal/intel_powerclamp.c b/drivers/thermal/intel_powerclamp.c index df64692e9e64..a47103a659fa 100644 --- a/drivers/thermal/intel_powerclamp.c +++ b/drivers/thermal/intel_powerclamp.c @@ -461,16 +461,13 @@ static void poll_pkg_cstate(struct work_struct *dummy) { static u64 msr_last; static u64 tsc_last; - static unsigned long jiffies_last; u64 msr_now; - unsigned long jiffies_now; u64 tsc_now; u64 val64; msr_now = pkg_state_counter(); tsc_now = rdtsc(); - jiffies_now = jiffies; /* calculate pkg cstate vs tsc ratio */ if (!msr_last || !tsc_last) @@ -485,7 +482,6 @@ static void poll_pkg_cstate(struct work_struct *dummy) /* update record */ msr_last = msr_now; - jiffies_last = jiffies_now; tsc_last = tsc_now; if (true == clamping) diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c index 34169c32d495..1aff7fde54b1 100644 --- a/drivers/thermal/mtk_thermal.c +++ b/drivers/thermal/mtk_thermal.c @@ -183,37 +183,37 @@ struct mtk_thermal { }; /* MT8173 thermal sensor data */ -const int mt8173_bank_data[MT8173_NUM_ZONES][3] = { +static const int mt8173_bank_data[MT8173_NUM_ZONES][3] = { { MT8173_TS2, MT8173_TS3 }, { MT8173_TS2, MT8173_TS4 }, { MT8173_TS1, MT8173_TS2, MT8173_TSABB }, { MT8173_TS2 }, }; -const int mt8173_msr[MT8173_NUM_SENSORS_PER_ZONE] = { +static const int mt8173_msr[MT8173_NUM_SENSORS_PER_ZONE] = { TEMP_MSR0, TEMP_MSR1, TEMP_MSR2, TEMP_MSR2 }; -const int mt8173_adcpnp[MT8173_NUM_SENSORS_PER_ZONE] = { +static const int mt8173_adcpnp[MT8173_NUM_SENSORS_PER_ZONE] = { TEMP_ADCPNP0, TEMP_ADCPNP1, TEMP_ADCPNP2, TEMP_ADCPNP3 }; -const int mt8173_mux_values[MT8173_NUM_SENSORS] = { 0, 1, 2, 3, 16 }; +static const int mt8173_mux_values[MT8173_NUM_SENSORS] = { 0, 1, 2, 3, 16 }; /* MT2701 thermal sensor data */ -const int mt2701_bank_data[MT2701_NUM_SENSORS] = { +static const int mt2701_bank_data[MT2701_NUM_SENSORS] = { MT2701_TS1, MT2701_TS2, MT2701_TSABB }; -const int mt2701_msr[MT2701_NUM_SENSORS_PER_ZONE] = { +static const int mt2701_msr[MT2701_NUM_SENSORS_PER_ZONE] = { TEMP_MSR0, TEMP_MSR1, TEMP_MSR2 }; -const int mt2701_adcpnp[MT2701_NUM_SENSORS_PER_ZONE] = { +static const int mt2701_adcpnp[MT2701_NUM_SENSORS_PER_ZONE] = { TEMP_ADCPNP0, TEMP_ADCPNP1, TEMP_ADCPNP2 }; -const int mt2701_mux_values[MT2701_NUM_SENSORS] = { 0, 1, 16 }; +static const int mt2701_mux_values[MT2701_NUM_SENSORS] = { 0, 1, 16 }; /** * The MT8173 thermal controller has four banks. Each bank can read up to diff --git a/drivers/thermal/rcar_gen3_thermal.c b/drivers/thermal/rcar_gen3_thermal.c new file mode 100644 index 000000000000..d33c845244b1 --- /dev/null +++ b/drivers/thermal/rcar_gen3_thermal.c @@ -0,0 +1,335 @@ +/* + * R-Car Gen3 THS thermal sensor driver + * Based on rcar_thermal.c and work from Hien Dang and Khiem Nguyen. + * + * Copyright (C) 2016 Renesas Electronics Corporation. + * Copyright (C) 2016 Sang Engineering + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + */ +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/thermal.h> + +/* Register offsets */ +#define REG_GEN3_IRQSTR 0x04 +#define REG_GEN3_IRQMSK 0x08 +#define REG_GEN3_IRQCTL 0x0C +#define REG_GEN3_IRQEN 0x10 +#define REG_GEN3_IRQTEMP1 0x14 +#define REG_GEN3_IRQTEMP2 0x18 +#define REG_GEN3_IRQTEMP3 0x1C +#define REG_GEN3_CTSR 0x20 +#define REG_GEN3_THCTR 0x20 +#define REG_GEN3_TEMP 0x28 +#define REG_GEN3_THCODE1 0x50 +#define REG_GEN3_THCODE2 0x54 +#define REG_GEN3_THCODE3 0x58 + +/* CTSR bits */ +#define CTSR_PONM BIT(8) +#define CTSR_AOUT BIT(7) +#define CTSR_THBGR BIT(5) +#define CTSR_VMEN BIT(4) +#define CTSR_VMST BIT(1) +#define CTSR_THSST BIT(0) + +/* THCTR bits */ +#define THCTR_PONM BIT(6) +#define THCTR_THSST BIT(0) + +#define CTEMP_MASK 0xFFF + +#define MCELSIUS(temp) ((temp) * 1000) +#define GEN3_FUSE_MASK 0xFFF + +#define TSC_MAX_NUM 3 + +/* Structure for thermal temperature calculation */ +struct equation_coefs { + int a1; + int b1; + int a2; + int b2; +}; + +struct rcar_gen3_thermal_tsc { + void __iomem *base; + struct thermal_zone_device *zone; + struct equation_coefs coef; + struct mutex lock; +}; + +struct rcar_gen3_thermal_priv { + struct rcar_gen3_thermal_tsc *tscs[TSC_MAX_NUM]; +}; + +struct rcar_gen3_thermal_data { + void (*thermal_init)(struct rcar_gen3_thermal_tsc *tsc); +}; + +static inline u32 rcar_gen3_thermal_read(struct rcar_gen3_thermal_tsc *tsc, + u32 reg) +{ + return ioread32(tsc->base + reg); +} + +static inline void rcar_gen3_thermal_write(struct rcar_gen3_thermal_tsc *tsc, + u32 reg, u32 data) +{ + iowrite32(data, tsc->base + reg); +} + +/* + * Linear approximation for temperature + * + * [reg] = [temp] * a + b => [temp] = ([reg] - b) / a + * + * The constants a and b are calculated using two triplets of int values PTAT + * and THCODE. PTAT and THCODE can either be read from hardware or use hard + * coded values from driver. The formula to calculate a and b are taken from + * BSP and sparsely documented and understood. + * + * Examining the linear formula and the formula used to calculate constants a + * and b while knowing that the span for PTAT and THCODE values are between + * 0x000 and 0xfff the largest integer possible is 0xfff * 0xfff == 0xffe001. + * Integer also needs to be signed so that leaves 7 bits for binary + * fixed point scaling. + */ + +#define FIXPT_SHIFT 7 +#define FIXPT_INT(_x) ((_x) << FIXPT_SHIFT) +#define FIXPT_DIV(_a, _b) DIV_ROUND_CLOSEST(((_a) << FIXPT_SHIFT), (_b)) +#define FIXPT_TO_MCELSIUS(_x) ((_x) * 1000 >> FIXPT_SHIFT) + +#define RCAR3_THERMAL_GRAN 500 /* mili Celsius */ + +/* no idea where these constants come from */ +#define TJ_1 96 +#define TJ_3 -41 + +static void rcar_gen3_thermal_calc_coefs(struct equation_coefs *coef, + int *ptat, int *thcode) +{ + int tj_2; + + /* TODO: Find documentation and document constant calculation formula */ + + /* + * Division is not scaled in BSP and if scaled it might overflow + * the dividend (4095 * 4095 << 14 > INT_MAX) so keep it unscaled + */ + tj_2 = (FIXPT_INT((ptat[1] - ptat[2]) * 137) + / (ptat[0] - ptat[2])) - FIXPT_INT(41); + + coef->a1 = FIXPT_DIV(FIXPT_INT(thcode[1] - thcode[2]), + tj_2 - FIXPT_INT(TJ_3)); + coef->b1 = FIXPT_INT(thcode[2]) - coef->a1 * TJ_3; + + coef->a2 = FIXPT_DIV(FIXPT_INT(thcode[1] - thcode[0]), + tj_2 - FIXPT_INT(TJ_1)); + coef->b2 = FIXPT_INT(thcode[0]) - coef->a2 * TJ_1; +} + +static int rcar_gen3_thermal_round(int temp) +{ + int result, round_offs; + + round_offs = temp >= 0 ? RCAR3_THERMAL_GRAN / 2 : + -RCAR3_THERMAL_GRAN / 2; + result = (temp + round_offs) / RCAR3_THERMAL_GRAN; + return result * RCAR3_THERMAL_GRAN; +} + +static int rcar_gen3_thermal_get_temp(void *devdata, int *temp) +{ + struct rcar_gen3_thermal_tsc *tsc = devdata; + int mcelsius, val1, val2; + u32 reg; + + /* Read register and convert to mili Celsius */ + mutex_lock(&tsc->lock); + + reg = rcar_gen3_thermal_read(tsc, REG_GEN3_TEMP) & CTEMP_MASK; + + val1 = FIXPT_DIV(FIXPT_INT(reg) - tsc->coef.b1, tsc->coef.a1); + val2 = FIXPT_DIV(FIXPT_INT(reg) - tsc->coef.b2, tsc->coef.a2); + mcelsius = FIXPT_TO_MCELSIUS((val1 + val2) / 2); + + mutex_unlock(&tsc->lock); + + /* Make sure we are inside specifications */ + if ((mcelsius < MCELSIUS(-40)) || (mcelsius > MCELSIUS(125))) + return -EIO; + + /* Round value to device granularity setting */ + *temp = rcar_gen3_thermal_round(mcelsius); + + return 0; +} + +static struct thermal_zone_of_device_ops rcar_gen3_tz_of_ops = { + .get_temp = rcar_gen3_thermal_get_temp, +}; + +static void r8a7795_thermal_init(struct rcar_gen3_thermal_tsc *tsc) +{ + rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR, CTSR_THBGR); + rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR, 0x0); + + usleep_range(1000, 2000); + + rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR, CTSR_PONM); + rcar_gen3_thermal_write(tsc, REG_GEN3_IRQCTL, 0x3F); + rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR, + CTSR_PONM | CTSR_AOUT | CTSR_THBGR | CTSR_VMEN); + + usleep_range(100, 200); + + rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR, + CTSR_PONM | CTSR_AOUT | CTSR_THBGR | CTSR_VMEN | + CTSR_VMST | CTSR_THSST); + + usleep_range(1000, 2000); +} + +static void r8a7796_thermal_init(struct rcar_gen3_thermal_tsc *tsc) +{ + u32 reg_val; + + reg_val = rcar_gen3_thermal_read(tsc, REG_GEN3_THCTR); + reg_val &= ~THCTR_PONM; + rcar_gen3_thermal_write(tsc, REG_GEN3_THCTR, reg_val); + + usleep_range(1000, 2000); + + rcar_gen3_thermal_write(tsc, REG_GEN3_IRQCTL, 0x3F); + reg_val = rcar_gen3_thermal_read(tsc, REG_GEN3_THCTR); + reg_val |= THCTR_THSST; + rcar_gen3_thermal_write(tsc, REG_GEN3_THCTR, reg_val); +} + +static const struct rcar_gen3_thermal_data r8a7795_data = { + .thermal_init = r8a7795_thermal_init, +}; + +static const struct rcar_gen3_thermal_data r8a7796_data = { + .thermal_init = r8a7796_thermal_init, +}; + +static const struct of_device_id rcar_gen3_thermal_dt_ids[] = { + { .compatible = "renesas,r8a7795-thermal", .data = &r8a7795_data}, + { .compatible = "renesas,r8a7796-thermal", .data = &r8a7796_data}, + {}, +}; +MODULE_DEVICE_TABLE(of, rcar_gen3_thermal_dt_ids); + +static int rcar_gen3_thermal_remove(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + + pm_runtime_put(dev); + pm_runtime_disable(dev); + + return 0; +} + +static int rcar_gen3_thermal_probe(struct platform_device *pdev) +{ + struct rcar_gen3_thermal_priv *priv; + struct device *dev = &pdev->dev; + struct resource *res; + struct thermal_zone_device *zone; + int ret, i; + const struct rcar_gen3_thermal_data *match_data = + of_device_get_match_data(dev); + + /* default values if FUSEs are missing */ + /* TODO: Read values from hardware on supported platforms */ + int ptat[3] = { 2351, 1509, 435 }; + int thcode[TSC_MAX_NUM][3] = { + { 3248, 2800, 2221 }, + { 3245, 2795, 2216 }, + { 3250, 2805, 2237 }, + }; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + platform_set_drvdata(pdev, priv); + + pm_runtime_enable(dev); + pm_runtime_get_sync(dev); + + for (i = 0; i < TSC_MAX_NUM; i++) { + struct rcar_gen3_thermal_tsc *tsc; + + tsc = devm_kzalloc(dev, sizeof(*tsc), GFP_KERNEL); + if (!tsc) { + ret = -ENOMEM; + goto error_unregister; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, i); + if (!res) + break; + + tsc->base = devm_ioremap_resource(dev, res); + if (IS_ERR(tsc->base)) { + ret = PTR_ERR(tsc->base); + goto error_unregister; + } + + priv->tscs[i] = tsc; + mutex_init(&tsc->lock); + + match_data->thermal_init(tsc); + rcar_gen3_thermal_calc_coefs(&tsc->coef, ptat, thcode[i]); + + zone = devm_thermal_zone_of_sensor_register(dev, i, tsc, + &rcar_gen3_tz_of_ops); + if (IS_ERR(zone)) { + dev_err(dev, "Can't register thermal zone\n"); + ret = PTR_ERR(zone); + goto error_unregister; + } + tsc->zone = zone; + } + + return 0; + +error_unregister: + rcar_gen3_thermal_remove(pdev); + + return ret; +} + +static struct platform_driver rcar_gen3_thermal_driver = { + .driver = { + .name = "rcar_gen3_thermal", + .of_match_table = rcar_gen3_thermal_dt_ids, + }, + .probe = rcar_gen3_thermal_probe, + .remove = rcar_gen3_thermal_remove, +}; +module_platform_driver(rcar_gen3_thermal_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("R-Car Gen3 THS thermal sensor driver"); +MODULE_AUTHOR("Wolfram Sang <wsa+renesas@sang-engineering.com>"); diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c index ad1186dd6132..7b8ef09d2b3c 100644 --- a/drivers/thermal/samsung/exynos_tmu.c +++ b/drivers/thermal/samsung/exynos_tmu.c @@ -1168,7 +1168,6 @@ static int exynos_of_sensor_conf(struct device_node *np, pdata->default_temp_offset = (u8)value; of_property_read_u32(np, "samsung,tmu_cal_type", &pdata->cal_type); - of_property_read_u32(np, "samsung,tmu_cal_mode", &pdata->cal_mode); of_node_put(np); return 0; diff --git a/drivers/thermal/samsung/exynos_tmu.h b/drivers/thermal/samsung/exynos_tmu.h index 440c7140b660..5149c2a3030c 100644 --- a/drivers/thermal/samsung/exynos_tmu.h +++ b/drivers/thermal/samsung/exynos_tmu.h @@ -70,7 +70,6 @@ struct exynos_tmu_platform_data { enum soc_type type; u32 cal_type; - u32 cal_mode; }; #endif /* _EXYNOS_TMU_H */ diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 655591316a88..11f0675cb7e5 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -36,9 +36,8 @@ MODULE_AUTHOR("Zhang Rui"); MODULE_DESCRIPTION("Generic thermal management sysfs support"); MODULE_LICENSE("GPL v2"); -static DEFINE_IDR(thermal_tz_idr); -static DEFINE_IDR(thermal_cdev_idr); -static DEFINE_MUTEX(thermal_idr_lock); +static DEFINE_IDA(thermal_tz_ida); +static DEFINE_IDA(thermal_cdev_ida); static LIST_HEAD(thermal_tz_list); static LIST_HEAD(thermal_cdev_list); @@ -589,29 +588,6 @@ void thermal_zone_device_unbind_exception(struct thermal_zone_device *tz, * - thermal zone devices lifecycle: registration, unregistration, * binding, and unbinding. */ -static int get_idr(struct idr *idr, struct mutex *lock, int *id) -{ - int ret; - - if (lock) - mutex_lock(lock); - ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL); - if (lock) - mutex_unlock(lock); - if (unlikely(ret < 0)) - return ret; - *id = ret; - return 0; -} - -static void release_idr(struct idr *idr, struct mutex *lock, int id) -{ - if (lock) - mutex_lock(lock); - idr_remove(idr, id); - if (lock) - mutex_unlock(lock); -} /** * thermal_zone_bind_cooling_device() - bind a cooling device to a thermal zone @@ -685,15 +661,16 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz, dev->target = THERMAL_NO_TARGET; dev->weight = weight; - result = get_idr(&tz->idr, &tz->lock, &dev->id); - if (result) + result = ida_simple_get(&tz->ida, 0, 0, GFP_KERNEL); + if (result < 0) goto free_mem; + dev->id = result; sprintf(dev->name, "cdev%d", dev->id); result = sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev->name); if (result) - goto release_idr; + goto release_ida; sprintf(dev->attr_name, "cdev%d_trip_point", dev->id); sysfs_attr_init(&dev->attr.attr); @@ -737,8 +714,8 @@ remove_trip_file: device_remove_file(&tz->device, &dev->attr); remove_symbol_link: sysfs_remove_link(&tz->device.kobj, dev->name); -release_idr: - release_idr(&tz->idr, &tz->lock, dev->id); +release_ida: + ida_simple_remove(&tz->ida, dev->id); free_mem: kfree(dev); return result; @@ -785,7 +762,7 @@ unbind: device_remove_file(&tz->device, &pos->weight_attr); device_remove_file(&tz->device, &pos->attr); sysfs_remove_link(&tz->device.kobj, pos->name); - release_idr(&tz->idr, &tz->lock, pos->id); + ida_simple_remove(&tz->ida, pos->id); kfree(pos); return 0; } @@ -925,12 +902,13 @@ __thermal_cooling_device_register(struct device_node *np, if (!cdev) return ERR_PTR(-ENOMEM); - result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id); - if (result) { + result = ida_simple_get(&thermal_cdev_ida, 0, 0, GFP_KERNEL); + if (result < 0) { kfree(cdev); return ERR_PTR(result); } + cdev->id = result; strlcpy(cdev->type, type ? : "", sizeof(cdev->type)); mutex_init(&cdev->lock); INIT_LIST_HEAD(&cdev->thermal_instances); @@ -943,7 +921,7 @@ __thermal_cooling_device_register(struct device_node *np, dev_set_name(&cdev->device, "cooling_device%d", cdev->id); result = device_register(&cdev->device); if (result) { - release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id); + ida_simple_remove(&thermal_cdev_ida, cdev->id); kfree(cdev); return ERR_PTR(result); } @@ -1070,7 +1048,7 @@ void thermal_cooling_device_unregister(struct thermal_cooling_device *cdev) mutex_unlock(&thermal_list_lock); - release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id); + ida_simple_remove(&thermal_cdev_ida, cdev->id); device_unregister(&cdev->device); } EXPORT_SYMBOL_GPL(thermal_cooling_device_unregister); @@ -1172,14 +1150,15 @@ thermal_zone_device_register(const char *type, int trips, int mask, return ERR_PTR(-ENOMEM); INIT_LIST_HEAD(&tz->thermal_instances); - idr_init(&tz->idr); + ida_init(&tz->ida); mutex_init(&tz->lock); - result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id); - if (result) { + result = ida_simple_get(&thermal_tz_ida, 0, 0, GFP_KERNEL); + if (result < 0) { kfree(tz); return ERR_PTR(result); } + tz->id = result; strlcpy(tz->type, type, sizeof(tz->type)); tz->ops = ops; tz->tzp = tzp; @@ -1201,7 +1180,7 @@ thermal_zone_device_register(const char *type, int trips, int mask, dev_set_name(&tz->device, "thermal_zone%d", tz->id); result = device_register(&tz->device); if (result) { - release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id); + ida_simple_remove(&thermal_tz_ida, tz->id); kfree(tz); return ERR_PTR(result); } @@ -1255,7 +1234,7 @@ thermal_zone_device_register(const char *type, int trips, int mask, return tz; unregister: - release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id); + ida_simple_remove(&thermal_tz_ida, tz->id); device_unregister(&tz->device); return ERR_PTR(result); } @@ -1313,8 +1292,8 @@ void thermal_zone_device_unregister(struct thermal_zone_device *tz) thermal_set_governor(tz, NULL); thermal_remove_hwmon_sysfs(tz); - release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id); - idr_destroy(&tz->idr); + ida_simple_remove(&thermal_tz_ida, tz->id); + ida_destroy(&tz->ida); mutex_destroy(&tz->lock); device_unregister(&tz->device); } @@ -1514,9 +1493,8 @@ unregister_class: unregister_governors: thermal_unregister_governors(); error: - idr_destroy(&thermal_tz_idr); - idr_destroy(&thermal_cdev_idr); - mutex_destroy(&thermal_idr_lock); + ida_destroy(&thermal_tz_ida); + ida_destroy(&thermal_cdev_ida); mutex_destroy(&thermal_list_lock); mutex_destroy(&thermal_governor_lock); return result; @@ -1529,9 +1507,8 @@ static void __exit thermal_exit(void) genetlink_exit(); class_unregister(&thermal_class); thermal_unregister_governors(); - idr_destroy(&thermal_tz_idr); - idr_destroy(&thermal_cdev_idr); - mutex_destroy(&thermal_idr_lock); + ida_destroy(&thermal_tz_ida); + ida_destroy(&thermal_cdev_ida); mutex_destroy(&thermal_list_lock); mutex_destroy(&thermal_governor_lock); } diff --git a/drivers/thermal/ti-soc-thermal/Kconfig b/drivers/thermal/ti-soc-thermal/Kconfig index ea8283f08aa6..fe0e877f84d0 100644 --- a/drivers/thermal/ti-soc-thermal/Kconfig +++ b/drivers/thermal/ti-soc-thermal/Kconfig @@ -11,7 +11,6 @@ config TI_SOC_THERMAL config TI_THERMAL bool "Texas Instruments SoCs thermal framework support" depends on TI_SOC_THERMAL - depends on CPU_THERMAL help If you say yes here you want to get support for generic thermal framework for the Texas Instruments on die bandgap temperature sensor. diff --git a/drivers/thermal/ti-soc-thermal/dra752-bandgap.h b/drivers/thermal/ti-soc-thermal/dra752-bandgap.h index 6b0f2b1160f7..a31e4b5e82cd 100644 --- a/drivers/thermal/ti-soc-thermal/dra752-bandgap.h +++ b/drivers/thermal/ti-soc-thermal/dra752-bandgap.h @@ -54,7 +54,6 @@ #define DRA752_STD_FUSE_OPP_BGAP_CORE_OFFSET 0x8 #define DRA752_TEMP_SENSOR_CORE_OFFSET 0x154 #define DRA752_BANDGAP_THRESHOLD_CORE_OFFSET 0x1ac -#define DRA752_BANDGAP_TSHUT_CORE_OFFSET 0x1b8 #define DRA752_BANDGAP_CUMUL_DTEMP_CORE_OFFSET 0x1c4 #define DRA752_DTEMP_CORE_0_OFFSET 0x208 #define DRA752_DTEMP_CORE_1_OFFSET 0x20c @@ -66,7 +65,6 @@ #define DRA752_STD_FUSE_OPP_BGAP_IVA_OFFSET 0x388 #define DRA752_TEMP_SENSOR_IVA_OFFSET 0x398 #define DRA752_BANDGAP_THRESHOLD_IVA_OFFSET 0x3a4 -#define DRA752_BANDGAP_TSHUT_IVA_OFFSET 0x3ac #define DRA752_BANDGAP_CUMUL_DTEMP_IVA_OFFSET 0x3b4 #define DRA752_DTEMP_IVA_0_OFFSET 0x3d0 #define DRA752_DTEMP_IVA_1_OFFSET 0x3d4 @@ -78,7 +76,6 @@ #define DRA752_STD_FUSE_OPP_BGAP_MPU_OFFSET 0x4 #define DRA752_TEMP_SENSOR_MPU_OFFSET 0x14c #define DRA752_BANDGAP_THRESHOLD_MPU_OFFSET 0x1a4 -#define DRA752_BANDGAP_TSHUT_MPU_OFFSET 0x1b0 #define DRA752_BANDGAP_CUMUL_DTEMP_MPU_OFFSET 0x1bc #define DRA752_DTEMP_MPU_0_OFFSET 0x1e0 #define DRA752_DTEMP_MPU_1_OFFSET 0x1e4 @@ -90,7 +87,6 @@ #define DRA752_STD_FUSE_OPP_BGAP_DSPEVE_OFFSET 0x384 #define DRA752_TEMP_SENSOR_DSPEVE_OFFSET 0x394 #define DRA752_BANDGAP_THRESHOLD_DSPEVE_OFFSET 0x3a0 -#define DRA752_BANDGAP_TSHUT_DSPEVE_OFFSET 0x3a8 #define DRA752_BANDGAP_CUMUL_DTEMP_DSPEVE_OFFSET 0x3b0 #define DRA752_DTEMP_DSPEVE_0_OFFSET 0x3bc #define DRA752_DTEMP_DSPEVE_1_OFFSET 0x3c0 @@ -102,7 +98,6 @@ #define DRA752_STD_FUSE_OPP_BGAP_GPU_OFFSET 0x0 #define DRA752_TEMP_SENSOR_GPU_OFFSET 0x150 #define DRA752_BANDGAP_THRESHOLD_GPU_OFFSET 0x1a8 -#define DRA752_BANDGAP_TSHUT_GPU_OFFSET 0x1b4 #define DRA752_BANDGAP_CUMUL_DTEMP_GPU_OFFSET 0x1c0 #define DRA752_DTEMP_GPU_0_OFFSET 0x1f4 #define DRA752_DTEMP_GPU_1_OFFSET 0x1f8 @@ -173,10 +168,6 @@ #define DRA752_BANDGAP_THRESHOLD_HOT_MASK (0x3ff << 16) #define DRA752_BANDGAP_THRESHOLD_COLD_MASK (0x3ff << 0) -/* DRA752.TSHUT_THRESHOLD */ -#define DRA752_TSHUT_THRESHOLD_MUXCTRL_MASK BIT(31) -#define DRA752_TSHUT_THRESHOLD_HOT_MASK (0x3ff << 16) -#define DRA752_TSHUT_THRESHOLD_COLD_MASK (0x3ff << 0) /* DRA752.BANDGAP_CUMUL_DTEMP_CORE */ #define DRA752_BANDGAP_CUMUL_DTEMP_CORE_MASK (0xffffffff << 0) @@ -216,8 +207,6 @@ #define DRA752_GPU_MAX_TEMP 125000 #define DRA752_GPU_HYST_VAL 5000 /* interrupts thresholds */ -#define DRA752_GPU_TSHUT_HOT 915 -#define DRA752_GPU_TSHUT_COLD 900 #define DRA752_GPU_T_HOT 800 #define DRA752_GPU_T_COLD 795 @@ -230,8 +219,6 @@ #define DRA752_MPU_MAX_TEMP 125000 #define DRA752_MPU_HYST_VAL 5000 /* interrupts thresholds */ -#define DRA752_MPU_TSHUT_HOT 915 -#define DRA752_MPU_TSHUT_COLD 900 #define DRA752_MPU_T_HOT 800 #define DRA752_MPU_T_COLD 795 @@ -244,8 +231,6 @@ #define DRA752_CORE_MAX_TEMP 125000 #define DRA752_CORE_HYST_VAL 5000 /* interrupts thresholds */ -#define DRA752_CORE_TSHUT_HOT 915 -#define DRA752_CORE_TSHUT_COLD 900 #define DRA752_CORE_T_HOT 800 #define DRA752_CORE_T_COLD 795 @@ -258,8 +243,6 @@ #define DRA752_DSPEVE_MAX_TEMP 125000 #define DRA752_DSPEVE_HYST_VAL 5000 /* interrupts thresholds */ -#define DRA752_DSPEVE_TSHUT_HOT 915 -#define DRA752_DSPEVE_TSHUT_COLD 900 #define DRA752_DSPEVE_T_HOT 800 #define DRA752_DSPEVE_T_COLD 795 @@ -272,8 +255,6 @@ #define DRA752_IVA_MAX_TEMP 125000 #define DRA752_IVA_HYST_VAL 5000 /* interrupts thresholds */ -#define DRA752_IVA_TSHUT_HOT 915 -#define DRA752_IVA_TSHUT_COLD 900 #define DRA752_IVA_T_HOT 800 #define DRA752_IVA_T_COLD 795 diff --git a/drivers/thermal/ti-soc-thermal/dra752-thermal-data.c b/drivers/thermal/ti-soc-thermal/dra752-thermal-data.c index 58b5c6694cd4..118d7d847715 100644 --- a/drivers/thermal/ti-soc-thermal/dra752-thermal-data.c +++ b/drivers/thermal/ti-soc-thermal/dra752-thermal-data.c @@ -49,9 +49,6 @@ dra752_core_temp_sensor_registers = { .bgap_threshold = DRA752_BANDGAP_THRESHOLD_CORE_OFFSET, .threshold_thot_mask = DRA752_BANDGAP_THRESHOLD_HOT_MASK, .threshold_tcold_mask = DRA752_BANDGAP_THRESHOLD_COLD_MASK, - .tshut_threshold = DRA752_BANDGAP_TSHUT_CORE_OFFSET, - .tshut_hot_mask = DRA752_TSHUT_THRESHOLD_HOT_MASK, - .tshut_cold_mask = DRA752_TSHUT_THRESHOLD_COLD_MASK, .bgap_status = DRA752_BANDGAP_STATUS_1_OFFSET, .status_bgap_alert_mask = DRA752_BANDGAP_STATUS_1_ALERT_MASK, .status_hot_mask = DRA752_BANDGAP_STATUS_1_HOT_CORE_MASK, @@ -85,9 +82,6 @@ dra752_iva_temp_sensor_registers = { .bgap_threshold = DRA752_BANDGAP_THRESHOLD_IVA_OFFSET, .threshold_thot_mask = DRA752_BANDGAP_THRESHOLD_HOT_MASK, .threshold_tcold_mask = DRA752_BANDGAP_THRESHOLD_COLD_MASK, - .tshut_threshold = DRA752_BANDGAP_TSHUT_IVA_OFFSET, - .tshut_hot_mask = DRA752_TSHUT_THRESHOLD_HOT_MASK, - .tshut_cold_mask = DRA752_TSHUT_THRESHOLD_COLD_MASK, .bgap_status = DRA752_BANDGAP_STATUS_2_OFFSET, .status_bgap_alert_mask = DRA752_BANDGAP_STATUS_1_ALERT_MASK, .status_hot_mask = DRA752_BANDGAP_STATUS_2_HOT_IVA_MASK, @@ -121,9 +115,6 @@ dra752_mpu_temp_sensor_registers = { .bgap_threshold = DRA752_BANDGAP_THRESHOLD_MPU_OFFSET, .threshold_thot_mask = DRA752_BANDGAP_THRESHOLD_HOT_MASK, .threshold_tcold_mask = DRA752_BANDGAP_THRESHOLD_COLD_MASK, - .tshut_threshold = DRA752_BANDGAP_TSHUT_MPU_OFFSET, - .tshut_hot_mask = DRA752_TSHUT_THRESHOLD_HOT_MASK, - .tshut_cold_mask = DRA752_TSHUT_THRESHOLD_COLD_MASK, .bgap_status = DRA752_BANDGAP_STATUS_1_OFFSET, .status_bgap_alert_mask = DRA752_BANDGAP_STATUS_1_ALERT_MASK, .status_hot_mask = DRA752_BANDGAP_STATUS_1_HOT_MPU_MASK, @@ -157,9 +148,6 @@ dra752_dspeve_temp_sensor_registers = { .bgap_threshold = DRA752_BANDGAP_THRESHOLD_DSPEVE_OFFSET, .threshold_thot_mask = DRA752_BANDGAP_THRESHOLD_HOT_MASK, .threshold_tcold_mask = DRA752_BANDGAP_THRESHOLD_COLD_MASK, - .tshut_threshold = DRA752_BANDGAP_TSHUT_DSPEVE_OFFSET, - .tshut_hot_mask = DRA752_TSHUT_THRESHOLD_HOT_MASK, - .tshut_cold_mask = DRA752_TSHUT_THRESHOLD_COLD_MASK, .bgap_status = DRA752_BANDGAP_STATUS_2_OFFSET, .status_bgap_alert_mask = DRA752_BANDGAP_STATUS_1_ALERT_MASK, .status_hot_mask = DRA752_BANDGAP_STATUS_2_HOT_DSPEVE_MASK, @@ -193,9 +181,6 @@ dra752_gpu_temp_sensor_registers = { .bgap_threshold = DRA752_BANDGAP_THRESHOLD_GPU_OFFSET, .threshold_thot_mask = DRA752_BANDGAP_THRESHOLD_HOT_MASK, .threshold_tcold_mask = DRA752_BANDGAP_THRESHOLD_COLD_MASK, - .tshut_threshold = DRA752_BANDGAP_TSHUT_GPU_OFFSET, - .tshut_hot_mask = DRA752_TSHUT_THRESHOLD_HOT_MASK, - .tshut_cold_mask = DRA752_TSHUT_THRESHOLD_COLD_MASK, .bgap_status = DRA752_BANDGAP_STATUS_1_OFFSET, .status_bgap_alert_mask = DRA752_BANDGAP_STATUS_1_ALERT_MASK, .status_hot_mask = DRA752_BANDGAP_STATUS_1_HOT_GPU_MASK, @@ -211,8 +196,6 @@ dra752_gpu_temp_sensor_registers = { /* Thresholds and limits for DRA752 MPU temperature sensor */ static struct temp_sensor_data dra752_mpu_temp_sensor_data = { - .tshut_hot = DRA752_MPU_TSHUT_HOT, - .tshut_cold = DRA752_MPU_TSHUT_COLD, .t_hot = DRA752_MPU_T_HOT, .t_cold = DRA752_MPU_T_COLD, .min_freq = DRA752_MPU_MIN_FREQ, @@ -226,8 +209,6 @@ static struct temp_sensor_data dra752_mpu_temp_sensor_data = { /* Thresholds and limits for DRA752 GPU temperature sensor */ static struct temp_sensor_data dra752_gpu_temp_sensor_data = { - .tshut_hot = DRA752_GPU_TSHUT_HOT, - .tshut_cold = DRA752_GPU_TSHUT_COLD, .t_hot = DRA752_GPU_T_HOT, .t_cold = DRA752_GPU_T_COLD, .min_freq = DRA752_GPU_MIN_FREQ, @@ -241,8 +222,6 @@ static struct temp_sensor_data dra752_gpu_temp_sensor_data = { /* Thresholds and limits for DRA752 CORE temperature sensor */ static struct temp_sensor_data dra752_core_temp_sensor_data = { - .tshut_hot = DRA752_CORE_TSHUT_HOT, - .tshut_cold = DRA752_CORE_TSHUT_COLD, .t_hot = DRA752_CORE_T_HOT, .t_cold = DRA752_CORE_T_COLD, .min_freq = DRA752_CORE_MIN_FREQ, @@ -256,8 +235,6 @@ static struct temp_sensor_data dra752_core_temp_sensor_data = { /* Thresholds and limits for DRA752 DSPEVE temperature sensor */ static struct temp_sensor_data dra752_dspeve_temp_sensor_data = { - .tshut_hot = DRA752_DSPEVE_TSHUT_HOT, - .tshut_cold = DRA752_DSPEVE_TSHUT_COLD, .t_hot = DRA752_DSPEVE_T_HOT, .t_cold = DRA752_DSPEVE_T_COLD, .min_freq = DRA752_DSPEVE_MIN_FREQ, @@ -271,8 +248,6 @@ static struct temp_sensor_data dra752_dspeve_temp_sensor_data = { /* Thresholds and limits for DRA752 IVA temperature sensor */ static struct temp_sensor_data dra752_iva_temp_sensor_data = { - .tshut_hot = DRA752_IVA_TSHUT_HOT, - .tshut_cold = DRA752_IVA_TSHUT_COLD, .t_hot = DRA752_IVA_T_HOT, .t_cold = DRA752_IVA_T_COLD, .min_freq = DRA752_IVA_MIN_FREQ, @@ -416,8 +391,7 @@ int dra752_adc_to_temp[DRA752_ADC_END_VALUE - DRA752_ADC_START_VALUE + 1] = { /* DRA752 data */ const struct ti_bandgap_data dra752_data = { - .features = TI_BANDGAP_FEATURE_TSHUT_CONFIG | - TI_BANDGAP_FEATURE_FREEZE_BIT | + .features = TI_BANDGAP_FEATURE_FREEZE_BIT | TI_BANDGAP_FEATURE_TALERT | TI_BANDGAP_FEATURE_COUNTER_DELAY | TI_BANDGAP_FEATURE_HISTORY_BUFFER | diff --git a/drivers/thermal/zx2967_thermal.c b/drivers/thermal/zx2967_thermal.c new file mode 100644 index 000000000000..a5670ad2cfc8 --- /dev/null +++ b/drivers/thermal/zx2967_thermal.c @@ -0,0 +1,258 @@ +/* + * ZTE's zx2967 family thermal sensor driver + * + * Copyright (C) 2017 ZTE Ltd. + * + * Author: Baoyou Xie <baoyou.xie@linaro.org> + * + * License terms: GNU General Public License (GPL) version 2 + */ + +#include <linux/clk.h> +#include <linux/device.h> +#include <linux/err.h> +#include <linux/iopoll.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/thermal.h> + +/* Power Mode: 0->low 1->high */ +#define ZX2967_THERMAL_POWER_MODE 0 +#define ZX2967_POWER_MODE_LOW 0 +#define ZX2967_POWER_MODE_HIGH 1 + +/* DCF Control Register */ +#define ZX2967_THERMAL_DCF 0x4 +#define ZX2967_DCF_EN BIT(1) +#define ZX2967_DCF_FREEZE BIT(0) + +/* Selection Register */ +#define ZX2967_THERMAL_SEL 0x8 + +/* Control Register */ +#define ZX2967_THERMAL_CTRL 0x10 + +#define ZX2967_THERMAL_READY BIT(12) +#define ZX2967_THERMAL_TEMP_MASK GENMASK(11, 0) +#define ZX2967_THERMAL_ID_MASK 0x18 +#define ZX2967_THERMAL_ID 0x10 + +#define ZX2967_GET_TEMP_TIMEOUT_US (100 * 1024) + +/** + * struct zx2967_thermal_priv - zx2967 thermal sensor private structure + * @tzd: struct thermal_zone_device where the sensor is registered + * @lock: prevents read sensor in parallel + * @clk_topcrm: topcrm clk structure + * @clk_apb: apb clk structure + * @regs: pointer to base address of the thermal sensor + */ + +struct zx2967_thermal_priv { + struct thermal_zone_device *tzd; + struct mutex lock; + struct clk *clk_topcrm; + struct clk *clk_apb; + void __iomem *regs; + struct device *dev; +}; + +static int zx2967_thermal_get_temp(void *data, int *temp) +{ + void __iomem *regs; + struct zx2967_thermal_priv *priv = data; + u32 val; + int ret; + + if (!priv->tzd) + return -EAGAIN; + + regs = priv->regs; + mutex_lock(&priv->lock); + writel_relaxed(ZX2967_POWER_MODE_LOW, + regs + ZX2967_THERMAL_POWER_MODE); + writel_relaxed(ZX2967_DCF_EN, regs + ZX2967_THERMAL_DCF); + + val = readl_relaxed(regs + ZX2967_THERMAL_SEL); + val &= ~ZX2967_THERMAL_ID_MASK; + val |= ZX2967_THERMAL_ID; + writel_relaxed(val, regs + ZX2967_THERMAL_SEL); + + /* + * Must wait for a while, surely it's a bit odd. + * otherwise temperature value we got has a few deviation, even if + * the THERMAL_READY bit is set. + */ + usleep_range(100, 300); + ret = readx_poll_timeout(readl, regs + ZX2967_THERMAL_CTRL, + val, val & ZX2967_THERMAL_READY, 300, + ZX2967_GET_TEMP_TIMEOUT_US); + if (ret) { + dev_err(priv->dev, "Thermal sensor data timeout\n"); + goto unlock; + } + + writel_relaxed(ZX2967_DCF_FREEZE | ZX2967_DCF_EN, + regs + ZX2967_THERMAL_DCF); + val = readl_relaxed(regs + ZX2967_THERMAL_CTRL) + & ZX2967_THERMAL_TEMP_MASK; + writel_relaxed(ZX2967_POWER_MODE_HIGH, + regs + ZX2967_THERMAL_POWER_MODE); + + /* + * Calculate temperature + * In dts, slope is multiplied by 1000. + */ + *temp = DIV_ROUND_CLOSEST(((s32)val + priv->tzd->tzp->offset) * 1000, + priv->tzd->tzp->slope); + +unlock: + mutex_unlock(&priv->lock); + return ret; +} + +static struct thermal_zone_of_device_ops zx2967_of_thermal_ops = { + .get_temp = zx2967_thermal_get_temp, +}; + +static int zx2967_thermal_probe(struct platform_device *pdev) +{ + struct zx2967_thermal_priv *priv; + struct resource *res; + int ret; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + priv->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(priv->regs)) + return PTR_ERR(priv->regs); + + priv->clk_topcrm = devm_clk_get(&pdev->dev, "topcrm"); + if (IS_ERR(priv->clk_topcrm)) { + ret = PTR_ERR(priv->clk_topcrm); + dev_err(&pdev->dev, "failed to get topcrm clock: %d\n", ret); + return ret; + } + + ret = clk_prepare_enable(priv->clk_topcrm); + if (ret) { + dev_err(&pdev->dev, "failed to enable topcrm clock: %d\n", + ret); + return ret; + } + + priv->clk_apb = devm_clk_get(&pdev->dev, "apb"); + if (IS_ERR(priv->clk_apb)) { + ret = PTR_ERR(priv->clk_apb); + dev_err(&pdev->dev, "failed to get apb clock: %d\n", ret); + goto disable_clk_topcrm; + } + + ret = clk_prepare_enable(priv->clk_apb); + if (ret) { + dev_err(&pdev->dev, "failed to enable apb clock: %d\n", + ret); + goto disable_clk_topcrm; + } + + mutex_init(&priv->lock); + priv->tzd = thermal_zone_of_sensor_register(&pdev->dev, + 0, priv, &zx2967_of_thermal_ops); + + if (IS_ERR(priv->tzd)) { + ret = PTR_ERR(priv->tzd); + dev_err(&pdev->dev, "failed to register sensor: %d\n", ret); + goto disable_clk_all; + } + + if (priv->tzd->tzp->slope == 0) { + thermal_zone_of_sensor_unregister(&pdev->dev, priv->tzd); + dev_err(&pdev->dev, "coefficients of sensor is invalid\n"); + ret = -EINVAL; + goto disable_clk_all; + } + + priv->dev = &pdev->dev; + platform_set_drvdata(pdev, priv); + + return 0; + +disable_clk_all: + clk_disable_unprepare(priv->clk_apb); +disable_clk_topcrm: + clk_disable_unprepare(priv->clk_topcrm); + return ret; +} + +static int zx2967_thermal_exit(struct platform_device *pdev) +{ + struct zx2967_thermal_priv *priv = platform_get_drvdata(pdev); + + thermal_zone_of_sensor_unregister(&pdev->dev, priv->tzd); + clk_disable_unprepare(priv->clk_topcrm); + clk_disable_unprepare(priv->clk_apb); + + return 0; +} + +static const struct of_device_id zx2967_thermal_id_table[] = { + { .compatible = "zte,zx296718-thermal" }, + {} +}; +MODULE_DEVICE_TABLE(of, zx2967_thermal_id_table); + +#ifdef CONFIG_PM_SLEEP +static int zx2967_thermal_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct zx2967_thermal_priv *priv = platform_get_drvdata(pdev); + + if (priv && priv->clk_topcrm) + clk_disable_unprepare(priv->clk_topcrm); + + if (priv && priv->clk_apb) + clk_disable_unprepare(priv->clk_apb); + + return 0; +} + +static int zx2967_thermal_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct zx2967_thermal_priv *priv = platform_get_drvdata(pdev); + int error; + + error = clk_prepare_enable(priv->clk_topcrm); + if (error) + return error; + + error = clk_prepare_enable(priv->clk_apb); + if (error) { + clk_disable_unprepare(priv->clk_topcrm); + return error; + } + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(zx2967_thermal_pm_ops, + zx2967_thermal_suspend, zx2967_thermal_resume); + +static struct platform_driver zx2967_thermal_driver = { + .probe = zx2967_thermal_probe, + .remove = zx2967_thermal_exit, + .driver = { + .name = "zx2967_thermal", + .of_match_table = zx2967_thermal_id_table, + .pm = &zx2967_thermal_pm_ops, + }, +}; +module_platform_driver(zx2967_thermal_driver); + +MODULE_AUTHOR("Baoyou Xie <baoyou.xie@linaro.org>"); +MODULE_DESCRIPTION("ZTE zx2967 thermal driver"); +MODULE_LICENSE("GPL v2"); |