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Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux

Browse source 
Pull thermal management update from Zhang Rui:
 "Highlights:

   - Introduction of thermal policy support, together with three new
     thermal governors, including step_wise, user_space, fire_share.

   - Introduction of ST-Ericsson db8500_thermal driver and ST-Ericsson
     db8500_cpufreq_cooling driver.

   - Thermal Kconfig file and Makefile refactor.

   - Fixes for generic thermal layer, generic cpucooling, rcar thermal
     driver and Exynos thermal driver."

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (36 commits)
  Thermal: Fix DEFAULT_THERMAL_GOVERNOR
  Thermal: fix a NULL pointer dereference when generic thermal layer is built as a module
  thermal: rcar: add rcar_zone_to_priv() macro
  thermal: rcar: fixup the unit of temperature
  thermal: cpu cooling: allow module builds
  thermal: cpu cooling: use const parameter while registering
  Thermal: Add ST-Ericsson DB8500 thermal properties and platform data.
  Thermal: Add ST-Ericsson DB8500 thermal driver.
  drivers/thermal/Makefile refactor
  Exynos: Add missing dependency
  Refactor drivers/thermal/Kconfig
  thermal: cpu_cooling: Make 'notify_device' static
  Thermal: Remove the cooling_cpufreq_list.
  Thermal: fix bug of counting cpu frequencies.
  Thermal: add indent for code alignment.
  thermal: rcar_thermal: remove explicitly used devm_kfree/iounap()
  thermal: user_space: Add missing static storage class specifiers
  thermal: fair_share: Add missing static storage class specifiers
  thermal: step_wise: Add missing static storage class specifiers
  Thermal: Fix oops and unlocking in thermal_sys.c
  ...
This commit is contained in:
Linus Torvalds 2012-12-12 07:57:13 -08:00
commit 50851c6248
27 changed files with 2038 additions and 398 deletions
Download patch file Download diff file Expand all files Collapse all files

6
include/linux/cpu_cooling.h
View file

@ -29,13 +29,13 @@
#define CPUFREQ_COOLING_START 0
#define CPUFREQ_COOLING_STOP 1
#ifdef CONFIG_CPU_THERMAL
#if defined(CONFIG_CPU_THERMAL) || defined(CONFIG_CPU_THERMAL_MODULE)
/**
* cpufreq_cooling_register - function to create cpufreq cooling device.
* @clip_cpus: cpumask of cpus where the frequency constraints will happen
*/
struct thermal_cooling_device *cpufreq_cooling_register(
struct cpumask *clip_cpus);
const struct cpumask *clip_cpus);
/**
* cpufreq_cooling_unregister - function to remove cpufreq cooling device.
@ -44,7 +44,7 @@ struct thermal_cooling_device *cpufreq_cooling_register(
void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev);
#else /* !CONFIG_CPU_THERMAL */
static inline struct thermal_cooling_device *cpufreq_cooling_register(
struct cpumask *clip_cpus)
const struct cpumask *clip_cpus)
{
return NULL;
}

38
include/linux/platform_data/db8500_thermal.h Normal file
View file

@ -0,0 +1,38 @@
/*
* db8500_thermal.h - DB8500 Thermal Management Implementation
*
* Copyright (C) 2012 ST-Ericsson
* Copyright (C) 2012 Linaro Ltd.
*
* Author: Hongbo Zhang <hongbo.zhang@linaro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _DB8500_THERMAL_H_
#define _DB8500_THERMAL_H_
#include <linux/thermal.h>
#define COOLING_DEV_MAX 8
struct db8500_trip_point {
unsigned long temp;
enum thermal_trip_type type;
char cdev_name[COOLING_DEV_MAX][THERMAL_NAME_LENGTH];
};
struct db8500_thsens_platform_data {
struct db8500_trip_point trip_points[THERMAL_MAX_TRIPS];
int num_trips;
};
#endif /* _DB8500_THERMAL_H_ */

134
include/linux/thermal.h
View file

@ -29,6 +29,32 @@
#include <linux/device.h>
#include <linux/workqueue.h>
#define THERMAL_TRIPS_NONE -1
#define THERMAL_MAX_TRIPS 12
#define THERMAL_NAME_LENGTH 20
/* No upper/lower limit requirement */
#define THERMAL_NO_LIMIT -1UL
/* Unit conversion macros */
#define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \
((long)t-2732+5)/10 : ((long)t-2732-5)/10)
#define CELSIUS_TO_KELVIN(t) ((t)*10+2732)
/* Adding event notification support elements */
#define THERMAL_GENL_FAMILY_NAME "thermal_event"
#define THERMAL_GENL_VERSION 0x01
#define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_group"
/* Default Thermal Governor */
#if defined(CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE)
#define DEFAULT_THERMAL_GOVERNOR "step_wise"
#elif defined(CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE)
#define DEFAULT_THERMAL_GOVERNOR "fair_share"
#elif defined(CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE)
#define DEFAULT_THERMAL_GOVERNOR "user_space"
#endif
struct thermal_zone_device;
struct thermal_cooling_device;
@ -50,6 +76,30 @@ enum thermal_trend {
THERMAL_TREND_DROPPING, /* temperature is dropping */
};
/* Events supported by Thermal Netlink */
enum events {
THERMAL_AUX0,
THERMAL_AUX1,
THERMAL_CRITICAL,
THERMAL_DEV_FAULT,
};
/* attributes of thermal_genl_family */
enum {
THERMAL_GENL_ATTR_UNSPEC,
THERMAL_GENL_ATTR_EVENT,
__THERMAL_GENL_ATTR_MAX,
};
#define THERMAL_GENL_ATTR_MAX (__THERMAL_GENL_ATTR_MAX - 1)
/* commands supported by the thermal_genl_family */
enum {
THERMAL_GENL_CMD_UNSPEC,
THERMAL_GENL_CMD_EVENT,
__THERMAL_GENL_CMD_MAX,
};
#define THERMAL_GENL_CMD_MAX (__THERMAL_GENL_CMD_MAX - 1)
struct thermal_zone_device_ops {
int (*bind) (struct thermal_zone_device *,
struct thermal_cooling_device *);
@ -83,11 +133,6 @@ struct thermal_cooling_device_ops {
int (*set_cur_state) (struct thermal_cooling_device *, unsigned long);
};
#define THERMAL_NO_LIMIT -1UL /* no upper/lower limit requirement */
#define THERMAL_TRIPS_NONE -1
#define THERMAL_MAX_TRIPS 12
#define THERMAL_NAME_LENGTH 20
struct thermal_cooling_device {
int id;
char type[THERMAL_NAME_LENGTH];
@ -100,10 +145,6 @@ struct thermal_cooling_device {
struct list_head node;
};
#define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \
((long)t-2732+5)/10 : ((long)t-2732-5)/10)
#define CELSIUS_TO_KELVIN(t) ((t)*10+2732)
struct thermal_attr {
struct device_attribute attr;
char name[THERMAL_NAME_LENGTH];
@ -125,46 +166,61 @@ struct thermal_zone_device {
int passive;
unsigned int forced_passive;
const struct thermal_zone_device_ops *ops;
const struct thermal_zone_params *tzp;
struct thermal_governor *governor;
struct list_head thermal_instances;
struct idr idr;
struct mutex lock; /* protect thermal_instances list */
struct list_head node;
struct delayed_work poll_queue;
};
/* Adding event notification support elements */
#define THERMAL_GENL_FAMILY_NAME "thermal_event"
#define THERMAL_GENL_VERSION 0x01
#define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_group"
enum events {
THERMAL_AUX0,
THERMAL_AUX1,
THERMAL_CRITICAL,
THERMAL_DEV_FAULT,
/* Structure that holds thermal governor information */
struct thermal_governor {
char name[THERMAL_NAME_LENGTH];
int (*throttle)(struct thermal_zone_device *tz, int trip);
struct list_head governor_list;
struct module *owner;
};
/* Structure that holds binding parameters for a zone */
struct thermal_bind_params {
struct thermal_cooling_device *cdev;
/*
* This is a measure of 'how effectively these devices can
* cool 'this' thermal zone. The shall be determined by platform
* characterization. This is on a 'percentage' scale.
* See Documentation/thermal/sysfs-api.txt for more information.
*/
int weight;
/*
* This is a bit mask that gives the binding relation between this
* thermal zone and cdev, for a particular trip point.
* See Documentation/thermal/sysfs-api.txt for more information.
*/
int trip_mask;
int (*match) (struct thermal_zone_device *tz,
struct thermal_cooling_device *cdev);
};
/* Structure to define Thermal Zone parameters */
struct thermal_zone_params {
char governor_name[THERMAL_NAME_LENGTH];
int num_tbps; /* Number of tbp entries */
struct thermal_bind_params *tbp;
};
struct thermal_genl_event {
u32 orig;
enum events event;
};
/* attributes of thermal_genl_family */
enum {
THERMAL_GENL_ATTR_UNSPEC,
THERMAL_GENL_ATTR_EVENT,
__THERMAL_GENL_ATTR_MAX,
};
#define THERMAL_GENL_ATTR_MAX (__THERMAL_GENL_ATTR_MAX - 1)
/* commands supported by the thermal_genl_family */
enum {
THERMAL_GENL_CMD_UNSPEC,
THERMAL_GENL_CMD_EVENT,
__THERMAL_GENL_CMD_MAX,
};
#define THERMAL_GENL_CMD_MAX (__THERMAL_GENL_CMD_MAX - 1)
/* Function declarations */
struct thermal_zone_device *thermal_zone_device_register(const char *, int, int,
void *, const struct thermal_zone_device_ops *, int, int);
void *, const struct thermal_zone_device_ops *,
const struct thermal_zone_params *, int, int);
void thermal_zone_device_unregister(struct thermal_zone_device *);
int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
@ -173,10 +229,20 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
struct thermal_cooling_device *);
void thermal_zone_device_update(struct thermal_zone_device *);
struct thermal_cooling_device *thermal_cooling_device_register(char *, void *,
const struct thermal_cooling_device_ops *);
void thermal_cooling_device_unregister(struct thermal_cooling_device *);
int get_tz_trend(struct thermal_zone_device *, int);
struct thermal_instance *get_thermal_instance(struct thermal_zone_device *,
struct thermal_cooling_device *, int);
void thermal_cdev_update(struct thermal_cooling_device *);
void notify_thermal_framework(struct thermal_zone_device *, int);
int thermal_register_governor(struct thermal_governor *);
void thermal_unregister_governor(struct thermal_governor *);
#ifdef CONFIG_NET
extern int thermal_generate_netlink_event(u32 orig, enum events event);
#else