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Diffstat (limited to 'include/linux/thermal.h')
-rw-r--r--include/linux/thermal.h197
1 files changed, 52 insertions, 145 deletions
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 2e9d18ba4653..0da2c257e32c 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -32,6 +32,7 @@
struct thermal_zone_device;
struct thermal_cooling_device;
struct thermal_instance;
+struct thermal_debugfs;
struct thermal_attr;
enum thermal_trend {
@@ -51,6 +52,10 @@ enum thermal_notify_event {
THERMAL_DEVICE_POWER_CAPABILITY_CHANGED, /* power capability changed */
THERMAL_TABLE_CHANGED, /* Thermal table(s) changed */
THERMAL_EVENT_KEEP_ALIVE, /* Request for user space handler to respond */
+ THERMAL_TZ_BIND_CDEV, /* Cooling dev is bind to the thermal zone */
+ THERMAL_TZ_UNBIND_CDEV, /* Cooling dev is unbind from the thermal zone */
+ THERMAL_INSTANCE_WEIGHT_CHANGED, /* Thermal instance weight changed */
+ THERMAL_TZ_RESUME, /* Thermal zone is resuming after system sleep */
};
/**
@@ -59,25 +64,42 @@ enum thermal_notify_event {
* @hysteresis: relative hysteresis in miliCelsius
* @type: trip point type
* @priv: pointer to driver data associated with this trip
+ * @flags: flags representing binary properties of the trip
*/
struct thermal_trip {
int temperature;
int hysteresis;
enum thermal_trip_type type;
+ u8 flags;
void *priv;
};
+#define THERMAL_TRIP_FLAG_RW_TEMP BIT(0)
+#define THERMAL_TRIP_FLAG_RW_HYST BIT(1)
+
+#define THERMAL_TRIP_FLAG_RW (THERMAL_TRIP_FLAG_RW_TEMP | \
+ THERMAL_TRIP_FLAG_RW_HYST)
+
+#define THERMAL_TRIP_PRIV_TO_INT(_val_) (uintptr_t)(_val_)
+#define THERMAL_INT_TO_TRIP_PRIV(_val_) (void *)(uintptr_t)(_val_)
+
+struct cooling_spec {
+ unsigned long upper; /* Highest cooling state */
+ unsigned long lower; /* Lowest cooling state */
+ unsigned int weight; /* Cooling device weight */
+};
+
struct thermal_zone_device_ops {
- int (*bind) (struct thermal_zone_device *,
- struct thermal_cooling_device *);
- int (*unbind) (struct thermal_zone_device *,
- struct thermal_cooling_device *);
+ bool (*should_bind) (struct thermal_zone_device *,
+ const struct thermal_trip *,
+ struct thermal_cooling_device *,
+ struct cooling_spec *);
int (*get_temp) (struct thermal_zone_device *, int *);
int (*set_trips) (struct thermal_zone_device *, int, int);
int (*change_mode) (struct thermal_zone_device *,
enum thermal_device_mode);
- int (*set_trip_temp) (struct thermal_zone_device *, int, int);
- int (*set_trip_hyst) (struct thermal_zone_device *, int, int);
+ int (*set_trip_temp) (struct thermal_zone_device *,
+ const struct thermal_trip *, int);
int (*get_crit_temp) (struct thermal_zone_device *, int *);
int (*set_emul_temp) (struct thermal_zone_device *, int);
int (*get_trend) (struct thermal_zone_device *,
@@ -97,7 +119,7 @@ struct thermal_cooling_device_ops {
struct thermal_cooling_device {
int id;
- char *type;
+ const char *type;
unsigned long max_state;
struct device device;
struct device_node *np;
@@ -108,110 +130,14 @@ struct thermal_cooling_device {
struct mutex lock; /* protect thermal_instances list */
struct list_head thermal_instances;
struct list_head node;
-};
-
-/**
- * struct thermal_zone_device - structure for a thermal zone
- * @id: unique id number for each thermal zone
- * @type: the thermal zone device type
- * @device: &struct device for this thermal zone
- * @removal: removal completion
- * @trip_temp_attrs: attributes for trip points for sysfs: trip temperature
- * @trip_type_attrs: attributes for trip points for sysfs: trip type
- * @trip_hyst_attrs: attributes for trip points for sysfs: trip hysteresis
- * @mode: current mode of this thermal zone
- * @devdata: private pointer for device private data
- * @trips: an array of struct thermal_trip
- * @num_trips: number of trip points the thermal zone supports
- * @trips_disabled; bitmap for disabled trips
- * @passive_delay_jiffies: number of jiffies to wait between polls when
- * performing passive cooling.
- * @polling_delay_jiffies: number of jiffies to wait between polls when
- * checking whether trip points have been crossed (0 for
- * interrupt driven systems)
- * @temperature: current temperature. This is only for core code,
- * drivers should use thermal_zone_get_temp() to get the
- * current temperature
- * @last_temperature: previous temperature read
- * @emul_temperature: emulated temperature when using CONFIG_THERMAL_EMULATION
- * @passive: 1 if you've crossed a passive trip point, 0 otherwise.
- * @prev_low_trip: the low current temperature if you've crossed a passive
- trip point.
- * @prev_high_trip: the above current temperature if you've crossed a
- passive trip point.
- * @need_update: if equals 1, thermal_zone_device_update needs to be invoked.
- * @ops: operations this &thermal_zone_device supports
- * @tzp: thermal zone parameters
- * @governor: pointer to the governor for this thermal zone
- * @governor_data: private pointer for governor data
- * @thermal_instances: list of &struct thermal_instance of this thermal zone
- * @ida: &struct ida to generate unique id for this zone's cooling
- * devices
- * @lock: lock to protect thermal_instances list
- * @node: node in thermal_tz_list (in thermal_core.c)
- * @poll_queue: delayed work for polling
- * @notify_event: Last notification event
- * @suspended: thermal zone suspend indicator
- */
-struct thermal_zone_device {
- int id;
- char type[THERMAL_NAME_LENGTH];
- struct device device;
- struct completion removal;
- struct attribute_group trips_attribute_group;
- struct thermal_attr *trip_temp_attrs;
- struct thermal_attr *trip_type_attrs;
- struct thermal_attr *trip_hyst_attrs;
- enum thermal_device_mode mode;
- void *devdata;
- struct thermal_trip *trips;
- int num_trips;
- unsigned long trips_disabled; /* bitmap for disabled trips */
- unsigned long passive_delay_jiffies;
- unsigned long polling_delay_jiffies;
- int temperature;
- int last_temperature;
- int emul_temperature;
- int passive;
- int prev_low_trip;
- int prev_high_trip;
- atomic_t need_update;
- struct thermal_zone_device_ops *ops;
- struct thermal_zone_params *tzp;
- struct thermal_governor *governor;
- void *governor_data;
- struct list_head thermal_instances;
- struct ida ida;
- struct mutex lock;
- struct list_head node;
- struct delayed_work poll_queue;
- enum thermal_notify_event notify_event;
- bool suspended;
-};
-
-/**
- * struct thermal_governor - structure that holds thermal governor information
- * @name: name of the governor
- * @bind_to_tz: callback called when binding to a thermal zone. If it
- * returns 0, the governor is bound to the thermal zone,
- * otherwise it fails.
- * @unbind_from_tz: callback called when a governor is unbound from a
- * thermal zone.
- * @throttle: callback called for every trip point even if temperature is
- * below the trip point temperature
- * @governor_list: node in thermal_governor_list (in thermal_core.c)
- */
-struct thermal_governor {
- char name[THERMAL_NAME_LENGTH];
- int (*bind_to_tz)(struct thermal_zone_device *tz);
- void (*unbind_from_tz)(struct thermal_zone_device *tz);
- int (*throttle)(struct thermal_zone_device *tz, int trip);
- struct list_head governor_list;
+#ifdef CONFIG_THERMAL_DEBUGFS
+ struct thermal_debugfs *debugfs;
+#endif
};
/* Structure to define Thermal Zone parameters */
struct thermal_zone_params {
- char governor_name[THERMAL_NAME_LENGTH];
+ const char *governor_name;
/*
* a boolean to indicate if the thermal to hwmon sysfs interface
@@ -281,42 +207,31 @@ static inline void devm_thermal_of_zone_unregister(struct device *dev,
}
#endif
-int __thermal_zone_get_trip(struct thermal_zone_device *tz, int trip_id,
- struct thermal_trip *trip);
-int thermal_zone_get_trip(struct thermal_zone_device *tz, int trip_id,
- struct thermal_trip *trip);
-
-int thermal_zone_set_trip(struct thermal_zone_device *tz, int trip_id,
- const struct thermal_trip *trip);
-
int for_each_thermal_trip(struct thermal_zone_device *tz,
int (*cb)(struct thermal_trip *, void *),
void *data);
-int thermal_zone_get_num_trips(struct thermal_zone_device *tz);
+int thermal_zone_for_each_trip(struct thermal_zone_device *tz,
+ int (*cb)(struct thermal_trip *, void *),
+ void *data);
+void thermal_zone_set_trip_temp(struct thermal_zone_device *tz,
+ struct thermal_trip *trip, int temp);
int thermal_zone_get_crit_temp(struct thermal_zone_device *tz, int *temp);
-#ifdef CONFIG_THERMAL_ACPI
-int thermal_acpi_active_trip_temp(struct acpi_device *adev, int id, int *ret_temp);
-int thermal_acpi_passive_trip_temp(struct acpi_device *adev, int *ret_temp);
-int thermal_acpi_hot_trip_temp(struct acpi_device *adev, int *ret_temp);
-int thermal_acpi_critical_trip_temp(struct acpi_device *adev, int *ret_temp);
-#endif
-
#ifdef CONFIG_THERMAL
struct thermal_zone_device *thermal_zone_device_register_with_trips(
const char *type,
- struct thermal_trip *trips,
- int num_trips, int mask,
- void *devdata,
- struct thermal_zone_device_ops *ops,
+ const struct thermal_trip *trips,
+ int num_trips, void *devdata,
+ const struct thermal_zone_device_ops *ops,
const struct thermal_zone_params *tzp,
- int passive_delay, int polling_delay);
+ unsigned int passive_delay,
+ unsigned int polling_delay);
struct thermal_zone_device *thermal_tripless_zone_device_register(
const char *type,
void *devdata,
- struct thermal_zone_device_ops *ops,
+ const struct thermal_zone_device_ops *ops,
const struct thermal_zone_params *tzp);
void thermal_zone_device_unregister(struct thermal_zone_device *tz);
@@ -326,18 +241,8 @@ const char *thermal_zone_device_type(struct thermal_zone_device *tzd);
int thermal_zone_device_id(struct thermal_zone_device *tzd);
struct device *thermal_zone_device(struct thermal_zone_device *tzd);
-int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
- struct thermal_cooling_device *,
- unsigned long, unsigned long,
- unsigned 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 *,
enum thermal_notify_event);
-void thermal_zone_device_exec(struct thermal_zone_device *tz,
- void (*cb)(struct thermal_zone_device *,
- unsigned long),
- unsigned long data);
struct thermal_cooling_device *thermal_cooling_device_register(const char *,
void *, const struct thermal_cooling_device_ops *);
@@ -347,7 +252,7 @@ thermal_of_cooling_device_register(struct device_node *np, const char *, void *,
struct thermal_cooling_device *
devm_thermal_of_cooling_device_register(struct device *dev,
struct device_node *np,
- char *type, void *devdata,
+ const char *type, void *devdata,
const struct thermal_cooling_device_ops *ops);
void thermal_cooling_device_update(struct thermal_cooling_device *);
void thermal_cooling_device_unregister(struct thermal_cooling_device *);
@@ -355,6 +260,9 @@ struct thermal_zone_device *thermal_zone_get_zone_by_name(const char *name);
int thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp);
int thermal_zone_get_slope(struct thermal_zone_device *tz);
int thermal_zone_get_offset(struct thermal_zone_device *tz);
+bool thermal_trip_is_bound_to_cdev(struct thermal_zone_device *tz,
+ const struct thermal_trip *trip,
+ struct thermal_cooling_device *cdev);
int thermal_zone_device_enable(struct thermal_zone_device *tz);
int thermal_zone_device_disable(struct thermal_zone_device *tz);
@@ -362,10 +270,9 @@ void thermal_zone_device_critical(struct thermal_zone_device *tz);
#else
static inline struct thermal_zone_device *thermal_zone_device_register_with_trips(
const char *type,
- struct thermal_trip *trips,
- int num_trips, int mask,
- void *devdata,
- struct thermal_zone_device_ops *ops,
+ const struct thermal_trip *trips,
+ int num_trips, void *devdata,
+ const struct thermal_zone_device_ops *ops,
const struct thermal_zone_params *tzp,
int passive_delay, int polling_delay)
{ return ERR_PTR(-ENODEV); }
@@ -392,7 +299,7 @@ thermal_of_cooling_device_register(struct device_node *np,
static inline struct thermal_cooling_device *
devm_thermal_of_cooling_device_register(struct device *dev,
struct device_node *np,
- char *type, void *devdata,
+ const char *type, void *devdata,
const struct thermal_cooling_device_ops *ops)
{
return ERR_PTR(-ENODEV);
generated by cgit v1.2.3 (git 2.39.0) at 2025-07-13 17:26:01 +0300