diff options
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/cpu_cooling.c | 360 | ||||
| -rw-r--r-- | drivers/thermal/db8500_cpufreq_cooling.c | 20 | ||||
| -rw-r--r-- | drivers/thermal/imx_thermal.c | 17 | ||||
| -rw-r--r-- | drivers/thermal/int340x_thermal/Makefile | 1 | ||||
| -rw-r--r-- | drivers/thermal/int340x_thermal/acpi_thermal_rel.c | 24 | ||||
| -rw-r--r-- | drivers/thermal/int340x_thermal/int3400_thermal.c | 1 | ||||
| -rw-r--r-- | drivers/thermal/int340x_thermal/int3402_thermal.c | 1 | ||||
| -rw-r--r-- | drivers/thermal/int340x_thermal/int3403_thermal.c | 4 | ||||
| -rw-r--r-- | drivers/thermal/int340x_thermal/processor_thermal_device.c | 311 | ||||
| -rw-r--r-- | drivers/thermal/intel_powerclamp.c | 1 | ||||
| -rw-r--r-- | drivers/thermal/of-thermal.c | 2 | ||||
| -rw-r--r-- | drivers/thermal/rcar_thermal.c | 17 | ||||
| -rw-r--r-- | drivers/thermal/rockchip_thermal.c | 1 | ||||
| -rw-r--r-- | drivers/thermal/samsung/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/thermal/samsung/exynos_thermal_common.c | 12 | ||||
| -rw-r--r-- | drivers/thermal/samsung/exynos_tmu.c | 5 | ||||
| -rw-r--r-- | drivers/thermal/thermal_core.c | 12 | ||||
| -rw-r--r-- | drivers/thermal/thermal_core.h | 4 | ||||
| -rw-r--r-- | drivers/thermal/ti-soc-thermal/ti-thermal-common.c | 17 |
19 files changed, 515 insertions, 297 deletions
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c index ad09e51ffae4..f65f0d109fc8 100644 --- a/drivers/thermal/cpu_cooling.c +++ b/drivers/thermal/cpu_cooling.c @@ -4,6 +4,8 @@ * Copyright (C) 2012 Samsung Electronics Co., Ltd(http://www.samsung.com) * Copyright (C) 2012 Amit Daniel <amit.kachhap@linaro.org> * + * Copyright (C) 2014 Viresh Kumar <viresh.kumar@linaro.org> + * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * 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 @@ -28,6 +30,20 @@ #include <linux/cpu.h> #include <linux/cpu_cooling.h> +/* + * Cooling state <-> CPUFreq frequency + * + * Cooling states are translated to frequencies throughout this driver and this + * is the relation between them. + * + * Highest cooling state corresponds to lowest possible frequency. + * + * i.e. + * level 0 --> 1st Max Freq + * level 1 --> 2nd Max Freq + * ... + */ + /** * struct cpufreq_cooling_device - data for cooling device with cpufreq * @id: unique integer value corresponding to each cpufreq_cooling_device @@ -38,25 +54,27 @@ * cooling devices. * @cpufreq_val: integer value representing the absolute value of the clipped * frequency. + * @max_level: maximum cooling level. One less than total number of valid + * cpufreq frequencies. * @allowed_cpus: all the cpus involved for this cpufreq_cooling_device. + * @node: list_head to link all cpufreq_cooling_device together. * - * This structure is required for keeping information of each - * cpufreq_cooling_device registered. In order to prevent corruption of this a - * mutex lock cooling_cpufreq_lock is used. + * This structure is required for keeping information of each registered + * cpufreq_cooling_device. */ struct cpufreq_cooling_device { int id; struct thermal_cooling_device *cool_dev; unsigned int cpufreq_state; unsigned int cpufreq_val; + unsigned int max_level; + unsigned int *freq_table; /* In descending order */ struct cpumask allowed_cpus; struct list_head node; }; static DEFINE_IDR(cpufreq_idr); static DEFINE_MUTEX(cooling_cpufreq_lock); -static unsigned int cpufreq_dev_count; - static LIST_HEAD(cpufreq_dev_list); /** @@ -98,120 +116,30 @@ static void release_idr(struct idr *idr, int id) /* Below code defines functions to be used for cpufreq as cooling device */ /** - * is_cpufreq_valid - function to check frequency transitioning capability. - * @cpu: cpu for which check is needed. + * get_level: Find the level for a particular frequency + * @cpufreq_dev: cpufreq_dev for which the property is required + * @freq: Frequency * - * This function will check the current state of the system if - * it is capable of changing the frequency for a given @cpu. - * - * Return: 0 if the system is not currently capable of changing - * the frequency of given cpu. !0 in case the frequency is changeable. + * Return: level on success, THERMAL_CSTATE_INVALID on error. */ -static int is_cpufreq_valid(int cpu) +static unsigned long get_level(struct cpufreq_cooling_device *cpufreq_dev, + unsigned int freq) { - struct cpufreq_policy policy; - - return !cpufreq_get_policy(&policy, cpu); -} - -enum cpufreq_cooling_property { - GET_LEVEL, - GET_FREQ, - GET_MAXL, -}; - -/** - * get_property - fetch a property of interest for a give cpu. - * @cpu: cpu for which the property is required - * @input: query parameter - * @output: query return - * @property: type of query (frequency, level, max level) - * - * This is the common function to - * 1. get maximum cpu cooling states - * 2. translate frequency to cooling state - * 3. translate cooling state to frequency - * Note that the code may be not in good shape - * but it is written in this way in order to: - * a) reduce duplicate code as most of the code can be shared. - * b) make sure the logic is consistent when translating between - * cooling states and frequencies. - * - * Return: 0 on success, -EINVAL when invalid parameters are passed. - */ -static int get_property(unsigned int cpu, unsigned long input, - unsigned int *output, - enum cpufreq_cooling_property property) -{ - int i; - unsigned long max_level = 0, level = 0; - unsigned int freq = CPUFREQ_ENTRY_INVALID; - int descend = -1; - struct cpufreq_frequency_table *pos, *table = - cpufreq_frequency_get_table(cpu); - - if (!output) - return -EINVAL; - - if (!table) - return -EINVAL; - - cpufreq_for_each_valid_entry(pos, table) { - /* ignore duplicate entry */ - if (freq == pos->frequency) - continue; - - /* get the frequency order */ - if (freq != CPUFREQ_ENTRY_INVALID && descend == -1) - descend = freq > pos->frequency; - - freq = pos->frequency; - max_level++; - } - - /* No valid cpu frequency entry */ - if (max_level == 0) - return -EINVAL; + unsigned long level; - /* max_level is an index, not a counter */ - max_level--; + for (level = 0; level <= cpufreq_dev->max_level; level++) { + if (freq == cpufreq_dev->freq_table[level]) + return level; - /* get max level */ - if (property == GET_MAXL) { - *output = (unsigned int)max_level; - return 0; + if (freq > cpufreq_dev->freq_table[level]) + break; } - if (property == GET_FREQ) - level = descend ? input : (max_level - input); - - i = 0; - cpufreq_for_each_valid_entry(pos, table) { - /* ignore duplicate entry */ - if (freq == pos->frequency) - continue; - - /* now we have a valid frequency entry */ - freq = pos->frequency; - - if (property == GET_LEVEL && (unsigned int)input == freq) { - /* get level by frequency */ - *output = descend ? i : (max_level - i); - return 0; - } - if (property == GET_FREQ && level == i) { - /* get frequency by level */ - *output = freq; - return 0; - } - i++; - } - - return -EINVAL; + return THERMAL_CSTATE_INVALID; } /** - * cpufreq_cooling_get_level - for a give cpu, return the cooling level. + * cpufreq_cooling_get_level - for a given cpu, return the cooling level. * @cpu: cpu for which the level is required * @freq: the frequency of interest * @@ -223,77 +151,21 @@ static int get_property(unsigned int cpu, unsigned long input, */ unsigned long cpufreq_cooling_get_level(unsigned int cpu, unsigned int freq) { - unsigned int val; - - if (get_property(cpu, (unsigned long)freq, &val, GET_LEVEL)) - return THERMAL_CSTATE_INVALID; - - return (unsigned long)val; -} -EXPORT_SYMBOL_GPL(cpufreq_cooling_get_level); - -/** - * get_cpu_frequency - get the absolute value of frequency from level. - * @cpu: cpu for which frequency is fetched. - * @level: cooling level - * - * This function matches cooling level with frequency. Based on a cooling level - * of frequency, equals cooling state of cpu cooling device, it will return - * the corresponding frequency. - * e.g level=0 --> 1st MAX FREQ, level=1 ---> 2nd MAX FREQ, .... etc - * - * Return: 0 on error, the corresponding frequency otherwise. - */ -static unsigned int get_cpu_frequency(unsigned int cpu, unsigned long level) -{ - int ret = 0; - unsigned int freq; - - ret = get_property(cpu, level, &freq, GET_FREQ); - if (ret) - return 0; - - return freq; -} - -/** - * cpufreq_apply_cooling - function to apply frequency clipping. - * @cpufreq_device: cpufreq_cooling_device pointer containing frequency - * clipping data. - * @cooling_state: value of the cooling state. - * - * Function used to make sure the cpufreq layer is aware of current thermal - * limits. The limits are applied by updating the cpufreq policy. - * - * Return: 0 on success, an error code otherwise (-EINVAL in case wrong - * cooling state). - */ -static int cpufreq_apply_cooling(struct cpufreq_cooling_device *cpufreq_device, - unsigned long cooling_state) -{ - unsigned int cpuid, clip_freq; - struct cpumask *mask = &cpufreq_device->allowed_cpus; - unsigned int cpu = cpumask_any(mask); - - - /* Check if the old cooling action is same as new cooling action */ - if (cpufreq_device->cpufreq_state == cooling_state) - return 0; - - clip_freq = get_cpu_frequency(cpu, cooling_state); - if (!clip_freq) - return -EINVAL; - - cpufreq_device->cpufreq_state = cooling_state; - cpufreq_device->cpufreq_val = clip_freq; + struct cpufreq_cooling_device *cpufreq_dev; - for_each_cpu(cpuid, mask) { - if (is_cpufreq_valid(cpuid)) - cpufreq_update_policy(cpuid); + mutex_lock(&cooling_cpufreq_lock); + list_for_each_entry(cpufreq_dev, &cpufreq_dev_list, node) { + if (cpumask_test_cpu(cpu, &cpufreq_dev->allowed_cpus)) { + mutex_unlock(&cooling_cpufreq_lock); + return get_level(cpufreq_dev, freq); + } } + mutex_unlock(&cooling_cpufreq_lock); - return 0; + pr_err("%s: cpu:%d not part of any cooling device\n", __func__, cpu); + return THERMAL_CSTATE_INVALID; } +EXPORT_SYMBOL_GPL(cpufreq_cooling_get_level); /** * cpufreq_thermal_notifier - notifier callback for cpufreq policy change. @@ -323,11 +195,6 @@ static int cpufreq_thermal_notifier(struct notifier_block *nb, &cpufreq_dev->allowed_cpus)) continue; - if (!cpufreq_dev->cpufreq_val) - cpufreq_dev->cpufreq_val = get_cpu_frequency( - cpumask_any(&cpufreq_dev->allowed_cpus), - cpufreq_dev->cpufreq_state); - max_freq = cpufreq_dev->cpufreq_val; if (policy->max != max_freq) @@ -354,19 +221,9 @@ static int cpufreq_get_max_state(struct thermal_cooling_device *cdev, unsigned long *state) { struct cpufreq_cooling_device *cpufreq_device = cdev->devdata; - struct cpumask *mask = &cpufreq_device->allowed_cpus; - unsigned int cpu; - unsigned int count = 0; - int ret; - - cpu = cpumask_any(mask); - - ret = get_property(cpu, 0, &count, GET_MAXL); - if (count > 0) - *state = count; - - return ret; + *state = cpufreq_device->max_level; + return 0; } /** @@ -403,8 +260,24 @@ static int cpufreq_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state) { struct cpufreq_cooling_device *cpufreq_device = cdev->devdata; + unsigned int cpu = cpumask_any(&cpufreq_device->allowed_cpus); + unsigned int clip_freq; + + /* Request state should be less than max_level */ + if (WARN_ON(state > cpufreq_device->max_level)) + return -EINVAL; + + /* Check if the old cooling action is same as new cooling action */ + if (cpufreq_device->cpufreq_state == state) + return 0; - return cpufreq_apply_cooling(cpufreq_device, state); + clip_freq = cpufreq_device->freq_table[state]; + cpufreq_device->cpufreq_state = state; + cpufreq_device->cpufreq_val = clip_freq; + + cpufreq_update_policy(cpu); + + return 0; } /* Bind cpufreq callbacks to thermal cooling device ops */ @@ -419,10 +292,25 @@ static struct notifier_block thermal_cpufreq_notifier_block = { .notifier_call = cpufreq_thermal_notifier, }; +static unsigned int find_next_max(struct cpufreq_frequency_table *table, + unsigned int prev_max) +{ + struct cpufreq_frequency_table *pos; + unsigned int max = 0; + + cpufreq_for_each_valid_entry(pos, table) { + if (pos->frequency > max && pos->frequency < prev_max) + max = pos->frequency; + } + + return max; +} + /** * __cpufreq_cooling_register - helper function to create cpufreq cooling device * @np: a valid struct device_node to the cooling device device tree node * @clip_cpus: cpumask of cpus where the frequency constraints will happen. + * Normally this should be same as cpufreq policy->related_cpus. * * This interface function registers the cpufreq cooling device with the name * "thermal-cpufreq-%x". This api can support multiple instances of cpufreq @@ -437,37 +325,42 @@ __cpufreq_cooling_register(struct device_node *np, const struct cpumask *clip_cpus) { struct thermal_cooling_device *cool_dev; - struct cpufreq_cooling_device *cpufreq_dev = NULL; - unsigned int min = 0, max = 0; + struct cpufreq_cooling_device *cpufreq_dev; char dev_name[THERMAL_NAME_LENGTH]; - int ret = 0, i; - struct cpufreq_policy policy; + struct cpufreq_frequency_table *pos, *table; + unsigned int freq, i; + int ret; - /* Verify that all the clip cpus have same freq_min, freq_max limit */ - for_each_cpu(i, clip_cpus) { - /* continue if cpufreq policy not found and not return error */ - if (!cpufreq_get_policy(&policy, i)) - continue; - if (min == 0 && max == 0) { - min = policy.cpuinfo.min_freq; - max = policy.cpuinfo.max_freq; - } else { - if (min != policy.cpuinfo.min_freq || - max != policy.cpuinfo.max_freq) - return ERR_PTR(-EINVAL); - } + table = cpufreq_frequency_get_table(cpumask_first(clip_cpus)); + if (!table) { + pr_debug("%s: CPUFreq table not found\n", __func__); + return ERR_PTR(-EPROBE_DEFER); } - cpufreq_dev = kzalloc(sizeof(struct cpufreq_cooling_device), - GFP_KERNEL); + + cpufreq_dev = kzalloc(sizeof(*cpufreq_dev), GFP_KERNEL); if (!cpufreq_dev) return ERR_PTR(-ENOMEM); + /* Find max levels */ + cpufreq_for_each_valid_entry(pos, table) + cpufreq_dev->max_level++; + + cpufreq_dev->freq_table = kmalloc(sizeof(*cpufreq_dev->freq_table) * + cpufreq_dev->max_level, GFP_KERNEL); + if (!cpufreq_dev->freq_table) { + cool_dev = ERR_PTR(-ENOMEM); + goto free_cdev; + } + + /* max_level is an index, not a counter */ + cpufreq_dev->max_level--; + cpumask_copy(&cpufreq_dev->allowed_cpus, clip_cpus); ret = get_idr(&cpufreq_idr, &cpufreq_dev->id); if (ret) { - kfree(cpufreq_dev); - return ERR_PTR(-EINVAL); + cool_dev = ERR_PTR(ret); + goto free_table; } snprintf(dev_name, sizeof(dev_name), "thermal-cpufreq-%d", @@ -475,25 +368,44 @@ __cpufreq_cooling_register(struct device_node *np, cool_dev = thermal_of_cooling_device_register(np, dev_name, cpufreq_dev, &cpufreq_cooling_ops); - if (IS_ERR(cool_dev)) { - release_idr(&cpufreq_idr, cpufreq_dev->id); - kfree(cpufreq_dev); - return cool_dev; + if (IS_ERR(cool_dev)) + goto remove_idr; + + /* Fill freq-table in descending order of frequencies */ + for (i = 0, freq = -1; i <= cpufreq_dev->max_level; i++) { + freq = find_next_max(table, freq); + cpufreq_dev->freq_table[i] = freq; + + /* Warn for duplicate entries */ + if (!freq) + pr_warn("%s: table has duplicate entries\n", __func__); + else + pr_debug("%s: freq:%u KHz\n", __func__, freq); } + + cpufreq_dev->cpufreq_val = cpufreq_dev->freq_table[0]; cpufreq_dev->cool_dev = cool_dev; - cpufreq_dev->cpufreq_state = 0; + mutex_lock(&cooling_cpufreq_lock); /* Register the notifier for first cpufreq cooling device */ - if (cpufreq_dev_count == 0) + if (list_empty(&cpufreq_dev_list)) cpufreq_register_notifier(&thermal_cpufreq_notifier_block, CPUFREQ_POLICY_NOTIFIER); - cpufreq_dev_count++; list_add(&cpufreq_dev->node, &cpufreq_dev_list); mutex_unlock(&cooling_cpufreq_lock); return cool_dev; + +remove_idr: + release_idr(&cpufreq_idr, cpufreq_dev->id); +free_table: + kfree(cpufreq_dev->freq_table); +free_cdev: + kfree(cpufreq_dev); + + return cool_dev; } /** @@ -554,16 +466,16 @@ void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev) cpufreq_dev = cdev->devdata; mutex_lock(&cooling_cpufreq_lock); list_del(&cpufreq_dev->node); - cpufreq_dev_count--; /* Unregister the notifier for the last cpufreq cooling device */ - if (cpufreq_dev_count == 0) + if (list_empty(&cpufreq_dev_list)) cpufreq_unregister_notifier(&thermal_cpufreq_notifier_block, CPUFREQ_POLICY_NOTIFIER); mutex_unlock(&cooling_cpufreq_lock); thermal_cooling_device_unregister(cpufreq_dev->cool_dev); release_idr(&cpufreq_idr, cpufreq_dev->id); + kfree(cpufreq_dev->freq_table); kfree(cpufreq_dev); } EXPORT_SYMBOL_GPL(cpufreq_cooling_unregister); diff --git a/drivers/thermal/db8500_cpufreq_cooling.c b/drivers/thermal/db8500_cpufreq_cooling.c index 000d53e934a0..607b62c7e611 100644 --- a/drivers/thermal/db8500_cpufreq_cooling.c +++ b/drivers/thermal/db8500_cpufreq_cooling.c @@ -18,7 +18,6 @@ */ #include <linux/cpu_cooling.h> -#include <linux/cpufreq.h> #include <linux/err.h> #include <linux/module.h> #include <linux/of.h> @@ -28,18 +27,17 @@ static int db8500_cpufreq_cooling_probe(struct platform_device *pdev) { struct thermal_cooling_device *cdev; - struct cpumask mask_val; - - /* make sure cpufreq driver has been initialized */ - if (!cpufreq_frequency_get_table(0)) - return -EPROBE_DEFER; - - cpumask_set_cpu(0, &mask_val); - cdev = cpufreq_cooling_register(&mask_val); + cdev = cpufreq_cooling_register(cpu_present_mask); if (IS_ERR(cdev)) { - dev_err(&pdev->dev, "Failed to register cooling device\n"); - return PTR_ERR(cdev); + int ret = PTR_ERR(cdev); + + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, + "Failed to register cooling device %d\n", + ret); + + return ret; } platform_set_drvdata(pdev, cdev); diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c index 88b32f942dcf..2ccbc0788353 100644 --- a/drivers/thermal/imx_thermal.c +++ b/drivers/thermal/imx_thermal.c @@ -9,7 +9,6 @@ #include <linux/clk.h> #include <linux/cpu_cooling.h> -#include <linux/cpufreq.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/init.h> @@ -454,15 +453,10 @@ static int imx_thermal_probe(struct platform_device *pdev) const struct of_device_id *of_id = of_match_device(of_imx_thermal_match, &pdev->dev); struct imx_thermal_data *data; - struct cpumask clip_cpus; struct regmap *map; int measure_freq; int ret; - if (!cpufreq_get_current_driver()) { - dev_dbg(&pdev->dev, "no cpufreq driver!"); - return -EPROBE_DEFER; - } data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; @@ -516,12 +510,13 @@ static int imx_thermal_probe(struct platform_device *pdev) regmap_write(map, MISC0 + REG_SET, MISC0_REFTOP_SELBIASOFF); regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN); - cpumask_set_cpu(0, &clip_cpus); - data->cdev = cpufreq_cooling_register(&clip_cpus); + data->cdev = cpufreq_cooling_register(cpu_present_mask); if (IS_ERR(data->cdev)) { ret = PTR_ERR(data->cdev); - dev_err(&pdev->dev, - "failed to register cpufreq cooling device: %d\n", ret); + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, + "failed to register cpufreq cooling device: %d\n", + ret); return ret; } @@ -613,6 +608,7 @@ static int imx_thermal_suspend(struct device *dev) regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP); regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN); data->mode = THERMAL_DEVICE_DISABLED; + clk_disable_unprepare(data->thermal_clk); return 0; } @@ -622,6 +618,7 @@ static int imx_thermal_resume(struct device *dev) struct imx_thermal_data *data = dev_get_drvdata(dev); struct regmap *map = data->tempmon; + clk_prepare_enable(data->thermal_clk); /* Enabled thermal sensor after resume */ regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN); regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP); diff --git a/drivers/thermal/int340x_thermal/Makefile b/drivers/thermal/int340x_thermal/Makefile index ffe40bffaf1a..d4413698a85f 100644 --- a/drivers/thermal/int340x_thermal/Makefile +++ b/drivers/thermal/int340x_thermal/Makefile @@ -1,4 +1,5 @@ obj-$(CONFIG_INT340X_THERMAL) += int3400_thermal.o obj-$(CONFIG_INT340X_THERMAL) += int3402_thermal.o obj-$(CONFIG_INT340X_THERMAL) += int3403_thermal.o +obj-$(CONFIG_INT340X_THERMAL) += processor_thermal_device.o obj-$(CONFIG_ACPI_THERMAL_REL) += acpi_thermal_rel.o diff --git a/drivers/thermal/int340x_thermal/acpi_thermal_rel.c b/drivers/thermal/int340x_thermal/acpi_thermal_rel.c index e4e61b3fb11e..2c2ec7666eb1 100644 --- a/drivers/thermal/int340x_thermal/acpi_thermal_rel.c +++ b/drivers/thermal/int340x_thermal/acpi_thermal_rel.c @@ -82,7 +82,7 @@ int acpi_parse_trt(acpi_handle handle, int *trt_count, struct trt **trtp, struct acpi_buffer trt_format = { sizeof("RRNNNNNN"), "RRNNNNNN" }; if (!acpi_has_method(handle, "_TRT")) - return 0; + return -ENODEV; status = acpi_evaluate_object(handle, "_TRT", NULL, &buffer); if (ACPI_FAILURE(status)) @@ -119,15 +119,11 @@ int acpi_parse_trt(acpi_handle handle, int *trt_count, struct trt **trtp, continue; result = acpi_bus_get_device(trt->source, &adev); - if (!result) - acpi_create_platform_device(adev); - else + if (result) pr_warn("Failed to get source ACPI device\n"); result = acpi_bus_get_device(trt->target, &adev); - if (!result) - acpi_create_platform_device(adev); - else + if (result) pr_warn("Failed to get target ACPI device\n"); } @@ -167,7 +163,7 @@ int acpi_parse_art(acpi_handle handle, int *art_count, struct art **artp, sizeof("RRNNNNNNNNNNN"), "RRNNNNNNNNNNN" }; if (!acpi_has_method(handle, "_ART")) - return 0; + return -ENODEV; status = acpi_evaluate_object(handle, "_ART", NULL, &buffer); if (ACPI_FAILURE(status)) @@ -206,16 +202,12 @@ int acpi_parse_art(acpi_handle handle, int *art_count, struct art **artp, if (art->source) { result = acpi_bus_get_device(art->source, &adev); - if (!result) - acpi_create_platform_device(adev); - else + if (result) pr_warn("Failed to get source ACPI device\n"); } if (art->target) { result = acpi_bus_get_device(art->target, &adev); - if (!result) - acpi_create_platform_device(adev); - else + if (result) pr_warn("Failed to get source ACPI device\n"); } } @@ -321,8 +313,8 @@ static long acpi_thermal_rel_ioctl(struct file *f, unsigned int cmd, unsigned long length = 0; int count = 0; char __user *arg = (void __user *)__arg; - struct trt *trts; - struct art *arts; + struct trt *trts = NULL; + struct art *arts = NULL; switch (cmd) { case ACPI_THERMAL_GET_TRT_COUNT: diff --git a/drivers/thermal/int340x_thermal/int3400_thermal.c b/drivers/thermal/int340x_thermal/int3400_thermal.c index dcb306ea14a4..65a98a97df07 100644 --- a/drivers/thermal/int340x_thermal/int3400_thermal.c +++ b/drivers/thermal/int340x_thermal/int3400_thermal.c @@ -335,7 +335,6 @@ static struct platform_driver int3400_thermal_driver = { .remove = int3400_thermal_remove, .driver = { .name = "int3400 thermal", - .owner = THIS_MODULE, .acpi_match_table = ACPI_PTR(int3400_thermal_match), }, }; diff --git a/drivers/thermal/int340x_thermal/int3402_thermal.c b/drivers/thermal/int340x_thermal/int3402_thermal.c index a5d08c14ba24..c5cbc3af3a05 100644 --- a/drivers/thermal/int340x_thermal/int3402_thermal.c +++ b/drivers/thermal/int340x_thermal/int3402_thermal.c @@ -231,7 +231,6 @@ static struct platform_driver int3402_thermal_driver = { .remove = int3402_thermal_remove, .driver = { .name = "int3402 thermal", - .owner = THIS_MODULE, .acpi_match_table = int3402_thermal_match, }, }; diff --git a/drivers/thermal/int340x_thermal/int3403_thermal.c b/drivers/thermal/int340x_thermal/int3403_thermal.c index 1bfa6a69e77a..0faf500d8a77 100644 --- a/drivers/thermal/int340x_thermal/int3403_thermal.c +++ b/drivers/thermal/int340x_thermal/int3403_thermal.c @@ -301,6 +301,8 @@ static int int3403_sensor_remove(struct int3403_priv *priv) { struct int3403_sensor *obj = priv->priv; + acpi_remove_notify_handler(priv->adev->handle, + ACPI_DEVICE_NOTIFY, int3403_notify); thermal_zone_device_unregister(obj->tzone); return 0; } @@ -369,6 +371,7 @@ static int int3403_cdev_add(struct int3403_priv *priv) p = buf.pointer; if (!p || (p->type != ACPI_TYPE_PACKAGE)) { printk(KERN_WARNING "Invalid PPSS data\n"); + kfree(buf.pointer); return -EFAULT; } @@ -381,6 +384,7 @@ static int int3403_cdev_add(struct int3403_priv *priv) priv->priv = obj; + kfree(buf.pointer); /* TODO: add ACPI notification support */ return result; diff --git a/drivers/thermal/int340x_thermal/processor_thermal_device.c b/drivers/thermal/int340x_thermal/processor_thermal_device.c new file mode 100644 index 000000000000..0fe5dbbea968 --- /dev/null +++ b/drivers/thermal/int340x_thermal/processor_thermal_device.c @@ -0,0 +1,311 @@ +/* + * processor_thermal_device.c + * Copyright (c) 2014, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/platform_device.h> +#include <linux/acpi.h> + +/* Broadwell-U/HSB thermal reporting device */ +#define PCI_DEVICE_ID_PROC_BDW_THERMAL 0x1603 +#define PCI_DEVICE_ID_PROC_HSB_THERMAL 0x0A03 + +/* Braswell thermal reporting device */ +#define PCI_DEVICE_ID_PROC_BSW_THERMAL 0x22DC + +struct power_config { + u32 index; + u32 min_uw; + u32 max_uw; + u32 tmin_us; + u32 tmax_us; + u32 step_uw; +}; + +struct proc_thermal_device { + struct device *dev; + struct acpi_device *adev; + struct power_config power_limits[2]; +}; + +enum proc_thermal_emum_mode_type { + PROC_THERMAL_NONE, + PROC_THERMAL_PCI, + PROC_THERMAL_PLATFORM_DEV +}; + +/* + * We can have only one type of enumeration, PCI or Platform, + * not both. So we don't need instance specific data. + */ +static enum proc_thermal_emum_mode_type proc_thermal_emum_mode = + PROC_THERMAL_NONE; + +#define POWER_LIMIT_SHOW(index, suffix) \ +static ssize_t power_limit_##index##_##suffix##_show(struct device *dev, \ + struct device_attribute *attr, \ + char *buf) \ +{ \ + struct pci_dev *pci_dev; \ + struct platform_device *pdev; \ + struct proc_thermal_device *proc_dev; \ +\ + if (proc_thermal_emum_mode == PROC_THERMAL_PLATFORM_DEV) { \ + pdev = to_platform_device(dev); \ + proc_dev = platform_get_drvdata(pdev); \ + } else { \ + pci_dev = to_pci_dev(dev); \ + proc_dev = pci_get_drvdata(pci_dev); \ + } \ + return sprintf(buf, "%lu\n",\ + (unsigned long)proc_dev->power_limits[index].suffix * 1000); \ +} + +POWER_LIMIT_SHOW(0, min_uw) +POWER_LIMIT_SHOW(0, max_uw) +POWER_LIMIT_SHOW(0, step_uw) +POWER_LIMIT_SHOW(0, tmin_us) +POWER_LIMIT_SHOW(0, tmax_us) + +POWER_LIMIT_SHOW(1, min_uw) +POWER_LIMIT_SHOW(1, max_uw) +POWER_LIMIT_SHOW(1, step_uw) +POWER_LIMIT_SHOW(1, tmin_us) +POWER_LIMIT_SHOW(1, tmax_us) + +static DEVICE_ATTR_RO(power_limit_0_min_uw); +static DEVICE_ATTR_RO(power_limit_0_max_uw); +static DEVICE_ATTR_RO(power_limit_0_step_uw); +static DEVICE_ATTR_RO(power_limit_0_tmin_us); +static DEVICE_ATTR_RO(power_limit_0_tmax_us); + +static DEVICE_ATTR_RO(power_limit_1_min_uw); +static DEVICE_ATTR_RO(power_limit_1_max_uw); +static DEVICE_ATTR_RO(power_limit_1_step_uw); +static DEVICE_ATTR_RO(power_limit_1_tmin_us); +static DEVICE_ATTR_RO(power_limit_1_tmax_us); + +static struct attribute *power_limit_attrs[] = { + &dev_attr_power_limit_0_min_uw.attr, + &dev_attr_power_limit_1_min_uw.attr, + &dev_attr_power_limit_0_max_uw.attr, + &dev_attr_power_limit_1_max_uw.attr, + &dev_attr_power_limit_0_step_uw.attr, + &dev_attr_power_limit_1_step_uw.attr, + &dev_attr_power_limit_0_tmin_us.attr, + &dev_attr_power_limit_1_tmin_us.attr, + &dev_attr_power_limit_0_tmax_us.attr, + &dev_attr_power_limit_1_tmax_us.attr, + NULL +}; + +static struct attribute_group power_limit_attribute_group = { + .attrs = power_limit_attrs, + .name = "power_limits" +}; + +static int proc_thermal_add(struct device *dev, + struct proc_thermal_device **priv) +{ + struct proc_thermal_device *proc_priv; + struct acpi_device *adev; + acpi_status status; + struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL }; + union acpi_object *elements, *ppcc; + union acpi_object *p; + int i; + int ret; + + adev = ACPI_COMPANION(dev); + if (!adev) + return -ENODEV; + + status = acpi_evaluate_object(adev->handle, "PPCC", NULL, &buf); + if (ACPI_FAILURE(status)) + return -ENODEV; + + p = buf.pointer; + if (!p || (p->type != ACPI_TYPE_PACKAGE)) { + dev_err(dev, "Invalid PPCC data\n"); + ret = -EFAULT; + goto free_buffer; + } + if (!p->package.count) { + dev_err(dev, "Invalid PPCC package size\n"); + ret = -EFAULT; + goto free_buffer; + } + + proc_priv = devm_kzalloc(dev, sizeof(*proc_priv), GFP_KERNEL); + if (!proc_priv) { + ret = -ENOMEM; + goto free_buffer; + } + + proc_priv->dev = dev; + proc_priv->adev = adev; + + for (i = 0; i < min((int)p->package.count - 1, 2); ++i) { + elements = &(p->package.elements[i+1]); + if (elements->type != ACPI_TYPE_PACKAGE || + elements->package.count != 6) { + ret = -EFAULT; + goto free_buffer; + } + ppcc = elements->package.elements; + proc_priv->power_limits[i].index = ppcc[0].integer.value; + proc_priv->power_limits[i].min_uw = ppcc[1].integer.value; + proc_priv->power_limits[i].max_uw = ppcc[2].integer.value; + proc_priv->power_limits[i].tmin_us = ppcc[3].integer.value; + proc_priv->power_limits[i].tmax_us = ppcc[4].integer.value; + proc_priv->power_limits[i].step_uw = ppcc[5].integer.value; + } + + *priv = proc_priv; + + ret = sysfs_create_group(&dev->kobj, + &power_limit_attribute_group); + +free_buffer: + kfree(buf.pointer); + + return ret; +} + +void proc_thermal_remove(struct proc_thermal_device *proc_priv) +{ + sysfs_remove_group(&proc_priv->dev->kobj, + &power_limit_attribute_group); +} + +static int int3401_add(struct platform_device *pdev) +{ + struct proc_thermal_device *proc_priv; + int ret; + + if (proc_thermal_emum_mode == PROC_THERMAL_PCI) { + dev_err(&pdev->dev, "error: enumerated as PCI dev\n"); + return -ENODEV; + } + + ret = proc_thermal_add(&pdev->dev, &proc_priv); + if (ret) + return ret; + + platform_set_drvdata(pdev, proc_priv); + proc_thermal_emum_mode = PROC_THERMAL_PLATFORM_DEV; + + return 0; +} + +static int int3401_remove(struct platform_device *pdev) +{ + proc_thermal_remove(platform_get_drvdata(pdev)); + + return 0; +} + +static int proc_thermal_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *unused) +{ + struct proc_thermal_device *proc_priv; + int ret; + + if (proc_thermal_emum_mode == PROC_THERMAL_PLATFORM_DEV) { + dev_err(&pdev->dev, "error: enumerated as platform dev\n"); + return -ENODEV; + } + + ret = pci_enable_device(pdev); + if (ret < 0) { + dev_err(&pdev->dev, "error: could not enable device\n"); + return ret; + } + + ret = proc_thermal_add(&pdev->dev, &proc_priv); + if (ret) { + pci_disable_device(pdev); + return ret; + } + + pci_set_drvdata(pdev, proc_priv); + proc_thermal_emum_mode = PROC_THERMAL_PCI; + + return 0; +} + +static void proc_thermal_pci_remove(struct pci_dev *pdev) +{ + proc_thermal_remove(pci_get_drvdata(pdev)); + pci_disable_device(pdev); +} + +static const struct pci_device_id proc_thermal_pci_ids[] = { + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BDW_THERMAL)}, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_HSB_THERMAL)}, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BSW_THERMAL)}, + { 0, }, +}; + +MODULE_DEVICE_TABLE(pci, proc_thermal_pci_ids); + +static struct pci_driver proc_thermal_pci_driver = { + .name = "proc_thermal", + .probe = proc_thermal_pci_probe, + .remove = proc_thermal_pci_remove, + .id_table = proc_thermal_pci_ids, +}; + +static const struct acpi_device_id int3401_device_ids[] = { + {"INT3401", 0}, + {"", 0}, +}; +MODULE_DEVICE_TABLE(acpi, int3401_device_ids); + +static struct platform_driver int3401_driver = { + .probe = int3401_add, + .remove = int3401_remove, + .driver = { + .name = "int3401 thermal", + .acpi_match_table = int3401_device_ids, + }, +}; + +static int __init proc_thermal_init(void) +{ + int ret; + + ret = platform_driver_register(&int3401_driver); + if (ret) + return ret; + + ret = pci_register_driver(&proc_thermal_pci_driver); + + return ret; +} + +static void __exit proc_thermal_exit(void) +{ + platform_driver_unregister(&int3401_driver); + pci_unregister_driver(&proc_thermal_pci_driver); +} + +module_init(proc_thermal_init); +module_exit(proc_thermal_exit); + +MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); +MODULE_DESCRIPTION("Processor Thermal Reporting Device Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/thermal/intel_powerclamp.c b/drivers/thermal/intel_powerclamp.c index e98b4249187c..6ceebd659dd4 100644 --- a/drivers/thermal/intel_powerclamp.c +++ b/drivers/thermal/intel_powerclamp.c @@ -688,6 +688,7 @@ static const struct x86_cpu_id intel_powerclamp_ids[] = { { X86_VENDOR_INTEL, 6, 0x45}, { X86_VENDOR_INTEL, 6, 0x46}, { X86_VENDOR_INTEL, 6, 0x4c}, + { X86_VENDOR_INTEL, 6, 0x56}, {} }; MODULE_DEVICE_TABLE(x86cpu, intel_powerclamp_ids); diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c index e145b66df444..d717f3dab6f1 100644 --- a/drivers/thermal/of-thermal.c +++ b/drivers/thermal/of-thermal.c @@ -149,7 +149,7 @@ EXPORT_SYMBOL_GPL(of_thermal_is_trip_valid); * * Return: pointer to trip points table, NULL otherwise */ -const struct thermal_trip * const +const struct thermal_trip * of_thermal_get_trip_points(struct thermal_zone_device *tz) { struct __thermal_zone *data = tz->devdata; diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c index 8803e693fe68..2580a4872f90 100644 --- a/drivers/thermal/rcar_thermal.c +++ b/drivers/thermal/rcar_thermal.c @@ -63,7 +63,7 @@ struct rcar_thermal_priv { struct mutex lock; struct list_head list; int id; - int ctemp; + u32 ctemp; }; #define rcar_thermal_for_each_priv(pos, common) \ @@ -145,7 +145,7 @@ static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv) { struct device *dev = rcar_priv_to_dev(priv); int i; - int ctemp, old, new; + u32 ctemp, old, new; int ret = -EINVAL; mutex_lock(&priv->lock); @@ -372,6 +372,7 @@ static int rcar_thermal_probe(struct platform_device *pdev) int i; int ret = -ENODEV; int idle = IDLE_INTERVAL; + u32 enr_bits = 0; common = devm_kzalloc(dev, sizeof(*common), GFP_KERNEL); if (!common) @@ -390,7 +391,7 @@ static int rcar_thermal_probe(struct platform_device *pdev) /* * platform has IRQ support. - * Then, drier use common register + * Then, driver uses common registers */ ret = devm_request_irq(dev, irq->start, rcar_thermal_irq, 0, @@ -408,9 +409,6 @@ static int rcar_thermal_probe(struct platform_device *pdev) if (IS_ERR(common->base)) return PTR_ERR(common->base); - /* enable temperature comparation */ - rcar_thermal_common_write(common, ENR, 0x00030303); - idle = 0; /* polling delay is not needed */ } @@ -452,8 +450,15 @@ static int rcar_thermal_probe(struct platform_device *pdev) rcar_thermal_irq_enable(priv); list_move_tail(&priv->list, &common->head); + + /* update ENR bits */ + enr_bits |= 3 << (i * 8); } + /* enable temperature comparation */ + if (irq) + rcar_thermal_common_write(common, ENR, enr_bits); + platform_set_drvdata(pdev, common); dev_info(dev, "%d sensor probed\n", i); diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c index 1bcddfc60e91..9c6ce548e363 100644 --- a/drivers/thermal/rockchip_thermal.c +++ b/drivers/thermal/rockchip_thermal.c @@ -677,7 +677,6 @@ static SIMPLE_DEV_PM_OPS(rockchip_thermal_pm_ops, static struct platform_driver rockchip_thermal_driver = { .driver = { .name = "rockchip-thermal", - .owner = THIS_MODULE, .pm = &rockchip_thermal_pm_ops, .of_match_table = of_rockchip_thermal_match, }, diff --git a/drivers/thermal/samsung/Kconfig b/drivers/thermal/samsung/Kconfig index f760389a204c..c43306ecc0ab 100644 --- a/drivers/thermal/samsung/Kconfig +++ b/drivers/thermal/samsung/Kconfig @@ -1,6 +1,6 @@ config EXYNOS_THERMAL tristate "Exynos thermal management unit driver" - depends on ARCH_HAS_BANDGAP && OF + depends on OF help If you say yes here you get support for the TMU (Thermal Management Unit) driver for SAMSUNG EXYNOS series of SoCs. This driver initialises diff --git a/drivers/thermal/samsung/exynos_thermal_common.c b/drivers/thermal/samsung/exynos_thermal_common.c index b6be572704a4..6dc3815cc73f 100644 --- a/drivers/thermal/samsung/exynos_thermal_common.c +++ b/drivers/thermal/samsung/exynos_thermal_common.c @@ -347,7 +347,6 @@ void exynos_report_trigger(struct thermal_sensor_conf *conf) int exynos_register_thermal(struct thermal_sensor_conf *sensor_conf) { int ret; - struct cpumask mask_val; struct exynos_thermal_zone *th_zone; if (!sensor_conf || !sensor_conf->read_temperature) { @@ -367,13 +366,14 @@ int exynos_register_thermal(struct thermal_sensor_conf *sensor_conf) * sensor */ if (sensor_conf->cooling_data.freq_clip_count > 0) { - cpumask_set_cpu(0, &mask_val); th_zone->cool_dev[th_zone->cool_dev_size] = - cpufreq_cooling_register(&mask_val); + cpufreq_cooling_register(cpu_present_mask); if (IS_ERR(th_zone->cool_dev[th_zone->cool_dev_size])) { - dev_err(sensor_conf->dev, - "Failed to register cpufreq cooling device\n"); - ret = -EINVAL; + ret = PTR_ERR(th_zone->cool_dev[th_zone->cool_dev_size]); + if (ret != -EPROBE_DEFER) + dev_err(sensor_conf->dev, + "Failed to register cpufreq cooling device: %d\n", + ret); goto err_unregister; } th_zone->cool_dev_size++; diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c index d44d91d681d4..d2f1e62a4232 100644 --- a/drivers/thermal/samsung/exynos_tmu.c +++ b/drivers/thermal/samsung/exynos_tmu.c @@ -927,7 +927,10 @@ static int exynos_tmu_probe(struct platform_device *pdev) /* Register the sensor with thermal management interface */ ret = exynos_register_thermal(sensor_conf); if (ret) { - dev_err(&pdev->dev, "Failed to register thermal interface\n"); + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, + "Failed to register thermal interface: %d\n", + ret); goto err_clk; } data->reg_conf = sensor_conf; diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 84fdf0792e27..48491d1a81d6 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -930,7 +930,7 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz, struct thermal_zone_device *pos1; struct thermal_cooling_device *pos2; unsigned long max_state; - int result; + int result, ret; if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE)) return -EINVAL; @@ -947,7 +947,9 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz, if (tz != pos1 || cdev != pos2) return -EINVAL; - cdev->ops->get_max_state(cdev, &max_state); + ret = cdev->ops->get_max_state(cdev, &max_state); + if (ret) + return ret; /* lower default 0, upper default max_state */ lower = lower == THERMAL_NO_LIMIT ? 0 : lower; @@ -1757,11 +1759,7 @@ int thermal_generate_netlink_event(struct thermal_zone_device *tz, thermal_event->event = event; /* send multicast genetlink message */ - result = genlmsg_end(skb, msg_header); - if (result < 0) { - nlmsg_free(skb); - return result; - } + genlmsg_end(skb, msg_header); result = genlmsg_multicast(&thermal_event_genl_family, skb, 0, 0, GFP_ATOMIC); diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h index 9083e7520623..0531c752fbbb 100644 --- a/drivers/thermal/thermal_core.h +++ b/drivers/thermal/thermal_core.h @@ -91,7 +91,7 @@ int of_parse_thermal_zones(void); void of_thermal_destroy_zones(void); int of_thermal_get_ntrips(struct thermal_zone_device *); bool of_thermal_is_trip_valid(struct thermal_zone_device *, int); -const struct thermal_trip * const +const struct thermal_trip * of_thermal_get_trip_points(struct thermal_zone_device *); #else static inline int of_parse_thermal_zones(void) { return 0; } @@ -105,7 +105,7 @@ static inline bool of_thermal_is_trip_valid(struct thermal_zone_device *tz, { return 0; } -static inline const struct thermal_trip * const +static inline const struct thermal_trip * of_thermal_get_trip_points(struct thermal_zone_device *tz) { return NULL; diff --git a/drivers/thermal/ti-soc-thermal/ti-thermal-common.c b/drivers/thermal/ti-soc-thermal/ti-thermal-common.c index 5fd03865e396..3fb054a10f6a 100644 --- a/drivers/thermal/ti-soc-thermal/ti-thermal-common.c +++ b/drivers/thermal/ti-soc-thermal/ti-thermal-common.c @@ -28,7 +28,6 @@ #include <linux/kernel.h> #include <linux/workqueue.h> #include <linux/thermal.h> -#include <linux/cpufreq.h> #include <linux/cpumask.h> #include <linux/cpu_cooling.h> #include <linux/of.h> @@ -407,17 +406,17 @@ int ti_thermal_register_cpu_cooling(struct ti_bandgap *bgp, int id) if (!data) return -EINVAL; - if (!cpufreq_get_current_driver()) { - dev_dbg(bgp->dev, "no cpufreq driver yet\n"); - return -EPROBE_DEFER; - } - /* Register cooling device */ data->cool_dev = cpufreq_cooling_register(cpu_present_mask); if (IS_ERR(data->cool_dev)) { - dev_err(bgp->dev, - "Failed to register cpufreq cooling device\n"); - return PTR_ERR(data->cool_dev); + int ret = PTR_ERR(data->cool_dev); + + if (ret != -EPROBE_DEFER) + dev_err(bgp->dev, + "Failed to register cpu cooling device %d\n", + ret); + + return ret; } ti_bandgap_set_sensor_data(bgp, id, data); |