leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge branches 'thermal-core', 'thermal-soc' and 'thermal-int340x' of .git into next

Browse Source
This commit is contained in:
Zhang Rui 2014-12-24 10:38:30 +08:00
commit 7429b1e0d0
19 changed files with 496 additions and 276 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

359
drivers/thermal/cpu_cooling.c
View File

@ -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
@ -38,26 +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);
/**
@ -99,120 +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;
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
*
@ -224,78 +151,22 @@ 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;
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.
@ -324,11 +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)
@ -355,19 +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;
}
/**
@ -404,8 +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;
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 */
@ -420,10 +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
@ -438,37 +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",
@ -476,24 +368,43 @@ __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;
}
@ -555,16 +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);

20
drivers/thermal/db8500_cpufreq_cooling.c
View File

@ -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);

15
drivers/thermal/imx_thermal.c
View File

@ -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;
}

1
drivers/thermal/int340x_thermal/Makefile
View File

@ -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

8
drivers/thermal/int340x_thermal/acpi_thermal_rel.c
View File

@ -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))
@ -167,7 +167,7 @@ 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))
@ -321,8 +321,8 @@ 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:

1
drivers/thermal/int340x_thermal/int3400_thermal.c
View File

@ -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),
},
};

1
drivers/thermal/int340x_thermal/int3402_thermal.c
View File

@ -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,
},
};

4
drivers/thermal/int340x_thermal/int3403_thermal.c
View File

@ -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;

309
drivers/thermal/int340x_thermal/processor_thermal_device.c Normal file
View File

@ -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");

1
drivers/thermal/intel_powerclamp.c
View File

@ -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);

1
drivers/thermal/rockchip_thermal.c
View File

@ -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,
},

2
drivers/thermal/samsung/Kconfig
View File

@ -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

12
drivers/thermal/samsung/exynos_thermal_common.c
View File

@ -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++;

5
drivers/thermal/samsung/exynos_tmu.c
View File

@ -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;

6
drivers/thermal/thermal_core.c
View File

@ -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;

17
drivers/thermal/ti-soc-thermal/ti-thermal-common.c
View File

@ -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);

2
include/dt-bindings/thermal/thermal.h
View File

@ -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

6
include/linux/cpu_cooling.h
View File

@ -50,7 +50,7 @@ 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);
}
#endif
@ -65,13 +65,13 @@ unsigned long cpufreq_cooling_get_level(unsigned int cpu, unsigned int freq);
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)

2
include/linux/thermal.h
View File

@ -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) ? \