Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management updates from Zhang Rui:
"First of all, the most important change is the thermal cpu cooling
fixes. The major fix here is to have proper sequencing between
cpufreq layer and thermal cpu cooling registration. A take away of
this fix is an improvement in the thermal drivers code. Thermal
drivers that require cpu cooling do not need to check for cpufreq
layer. The requirement now is to propagate the error code, if any,
while registering cpu cooling device. Thanks to Viresh for
implementing the required CPUfreq changes.
Second, a new driver is introduced for int340x processor thermal
device. Given that int340x thermal is disabled by default, and this
processor thermal device is only available on limited platforms, plus
the driver does nothing but exposes some thermal limitation
information for user space to use, thus I think it is safe to include
it in this pull request after missing 3.19-rc2.
Specifics:
- Thermal cpu cooling fixes and cleanups.
- introduce INT340X processor thermal reporting device driver.
- several small fixes and cleanups for int340x thermal drivers"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (43 commits)
Thermal/int340x/int3403: Free acpi notification handler
Thermal/int340x/processor_thermal: Fix memory leak
Thermal/int340x/int3403: Fix memory leak
thermal: int340x: Introduce processor reporting device
thermal: int340x_thermal: drop owner assignment from platform_drivers
thermal: drop owner assignment from platform_drivers
thermal: cpu_cooling: document node in struct cpufreq_cooling_device
thermal/powerclamp: add ids for future xeon cpus
Thermal/int340x: Handle properly the case when _trt or _art acpi entry is missing
thermal: cpu_cooling: return ERR_PTR() for !CPU_THERMAL or !THERMAL_OF
thermal: cpu_cooling: small memory leak on error
thermal: ti-soc-thermal: Do not print error message in the EPROBE_DEFER case
thermal: db8500: Do not print error message in the EPROBE_DEFER case
thermal: imx: Do not print error message in the EPROBE_DEFER case
thermal: Fix cdev registration with THERMAL_NO_LIMIT on 64bit
drivers: thermal: Remove ARCH_HAS_BANDGAP dependency for samsung
thermal:core:fix: Check return code of the ->get_max_state() callback
thermal: cpu_cooling: update copyright tags
thermal: cpu_cooling: Use cpufreq_dev->freq_table for finding level/freq
thermal: cpu_cooling: Store frequencies in descending order
...
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index ad09e51..f65f0d1 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 @@
/* 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;
+ unsigned long level;
- return !cpufreq_get_policy(&policy, cpu);
-}
+ for (level = 0; level <= cpufreq_dev->max_level; level++) {
+ if (freq == cpufreq_dev->freq_table[level])
+ return level;
-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++;
+ if (freq > cpufreq_dev->freq_table[level])
+ break;
}
- /* No valid cpu frequency entry */
- if (max_level == 0)
- return -EINVAL;
-
- /* max_level is an index, not a counter */
- max_level--;
-
- /* get max level */
- if (property == GET_MAXL) {
- *output = (unsigned int)max_level;
- return 0;
- }
-
- 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
*
@@ -223,79 +151,23 @@
*/
unsigned long cpufreq_cooling_get_level(unsigned int cpu, unsigned int freq)
{
- unsigned int val;
+ struct cpufreq_cooling_device *cpufreq_dev;
- if (get_property(cpu, (unsigned long)freq, &val, GET_LEVEL))
- return THERMAL_CSTATE_INVALID;
+ 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 (unsigned long)val;
+ 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);
/**
- * 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;
-
- for_each_cpu(cpuid, mask) {
- if (is_cpufreq_valid(cpuid))
- cpufreq_update_policy(cpuid);
- }
-
- return 0;
-}
-
-/**
* cpufreq_thermal_notifier - notifier callback for cpufreq policy change.
* @nb: struct notifier_block * with callback info.
* @event: value showing cpufreq event for which this function invoked.
@@ -323,11 +195,6 @@
&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 @@
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 @@
unsigned long state)
{
struct cpufreq_cooling_device *cpufreq_device = cdev->devdata;
+ unsigned int cpu = cpumask_any(&cpufreq_device->allowed_cpus);
+ unsigned int clip_freq;
- return cpufreq_apply_cooling(cpufreq_device, state);
+ /* 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;
+
+ 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 @@
.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 @@
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 @@
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 @@
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 000d53e..607b62c 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 88b32f9..c1188ac 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 @@
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 @@
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;
}
diff --git a/drivers/thermal/int340x_thermal/Makefile b/drivers/thermal/int340x_thermal/Makefile
index ffe40bf..d441369 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 e4e61b3..231cabc 100644
--- a/drivers/thermal/int340x_thermal/acpi_thermal_rel.c
+++ b/drivers/thermal/int340x_thermal/acpi_thermal_rel.c
@@ -82,7 +82,7 @@
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))
@@ -167,7 +167,7 @@
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))
@@ -321,8 +321,8 @@
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 dcb306e..65a98a9 100644
--- a/drivers/thermal/int340x_thermal/int3400_thermal.c
+++ b/drivers/thermal/int340x_thermal/int3400_thermal.c
@@ -335,7 +335,6 @@
.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 a5d08c1..c5cbc3a 100644
--- a/drivers/thermal/int340x_thermal/int3402_thermal.c
+++ b/drivers/thermal/int340x_thermal/int3402_thermal.c
@@ -231,7 +231,6 @@
.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 1bfa6a6..0faf500 100644
--- a/drivers/thermal/int340x_thermal/int3403_thermal.c
+++ b/drivers/thermal/int340x_thermal/int3403_thermal.c
@@ -301,6 +301,8 @@
{
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 @@
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 @@
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 0000000..31bb553
--- /dev/null
+++ b/drivers/thermal/int340x_thermal/processor_thermal_device.c
@@ -0,0 +1,309 @@
+/*
+ * 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);
+
+ 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 e98b424..6ceebd6 100644
--- a/drivers/thermal/intel_powerclamp.c
+++ b/drivers/thermal/intel_powerclamp.c
@@ -688,6 +688,7 @@
{ 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/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
index 1bcddfc..9c6ce54 100644
--- a/drivers/thermal/rockchip_thermal.c
+++ b/drivers/thermal/rockchip_thermal.c
@@ -677,7 +677,6 @@
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 f760389..c43306e 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 b6be572..6dc3815 100644
--- a/drivers/thermal/samsung/exynos_thermal_common.c
+++ b/drivers/thermal/samsung/exynos_thermal_common.c
@@ -347,7 +347,6 @@
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 @@
* 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 d44d91d..d2f1e62 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -927,7 +927,10 @@
/* 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 84fdf07..87e0b07 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -930,7 +930,7 @@
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 @@
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;
diff --git a/drivers/thermal/ti-soc-thermal/ti-thermal-common.c b/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
index 5fd0386..3fb054a 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 @@
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);
diff --git a/include/dt-bindings/thermal/thermal.h b/include/dt-bindings/thermal/thermal.h
index 59822a9..b5e6b00 100644
--- a/include/dt-bindings/thermal/thermal.h
+++ b/include/dt-bindings/thermal/thermal.h
@@ -11,7 +11,7 @@
#define _DT_BINDINGS_THERMAL_THERMAL_H
/* On cooling devices upper and lower limits */
-#define THERMAL_NO_LIMIT (-1UL)
+#define THERMAL_NO_LIMIT (~0)
#endif
diff --git a/include/linux/cpu_cooling.h b/include/linux/cpu_cooling.h
index c303d38..bd95527 100644
--- a/include/linux/cpu_cooling.h
+++ b/include/linux/cpu_cooling.h
@@ -50,7 +50,7 @@
of_cpufreq_cooling_register(struct device_node *np,
const struct cpumask *clip_cpus)
{
- return NULL;
+ return ERR_PTR(-ENOSYS);
}
#endif
@@ -65,13 +65,13 @@
static inline struct thermal_cooling_device *
cpufreq_cooling_register(const struct cpumask *clip_cpus)
{
- return NULL;
+ return ERR_PTR(-ENOSYS);
}
static inline struct thermal_cooling_device *
of_cpufreq_cooling_register(struct device_node *np,
const struct cpumask *clip_cpus)
{
- return NULL;
+ return ERR_PTR(-ENOSYS);
}
static inline
void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index c611a02..fc52e30 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -38,7 +38,7 @@
#define THERMAL_CSTATE_INVALID -1UL
/* No upper/lower limit requirement */
-#define THERMAL_NO_LIMIT THERMAL_CSTATE_INVALID
+#define THERMAL_NO_LIMIT ((u32)~0)
/* Unit conversion macros */
#define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \
