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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/thermal/thermal_core.h
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/thermal/thermal_core.h')
-rw-r--r--drivers/thermal/thermal_core.h163
1 files changed, 163 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
new file mode 100644
index 000000000..1571917bd
--- /dev/null
+++ b/drivers/thermal/thermal_core.h
@@ -0,0 +1,163 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * thermal_core.h
+ *
+ * Copyright (C) 2012 Intel Corp
+ * Author: Durgadoss R <durgadoss.r@intel.com>
+ */
+
+#ifndef __THERMAL_CORE_H__
+#define __THERMAL_CORE_H__
+
+#include <linux/device.h>
+#include <linux/thermal.h>
+
+#include "thermal_netlink.h"
+
+/* 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"
+#elif defined(CONFIG_THERMAL_DEFAULT_GOV_POWER_ALLOCATOR)
+#define DEFAULT_THERMAL_GOVERNOR "power_allocator"
+#endif
+
+/* Initial state of a cooling device during binding */
+#define THERMAL_NO_TARGET -1UL
+
+/* Init section thermal table */
+extern struct thermal_governor *__governor_thermal_table[];
+extern struct thermal_governor *__governor_thermal_table_end[];
+
+#define THERMAL_TABLE_ENTRY(table, name) \
+ static typeof(name) *__thermal_table_entry_##name \
+ __used __section("__" #table "_thermal_table") = &name
+
+#define THERMAL_GOVERNOR_DECLARE(name) THERMAL_TABLE_ENTRY(governor, name)
+
+#define for_each_governor_table(__governor) \
+ for (__governor = __governor_thermal_table; \
+ __governor < __governor_thermal_table_end; \
+ __governor++)
+
+int for_each_thermal_zone(int (*cb)(struct thermal_zone_device *, void *),
+ void *);
+
+int for_each_thermal_cooling_device(int (*cb)(struct thermal_cooling_device *,
+ void *), void *);
+
+int for_each_thermal_governor(int (*cb)(struct thermal_governor *, void *),
+ void *thermal_governor);
+
+struct thermal_zone_device *thermal_zone_get_by_id(int id);
+
+struct thermal_attr {
+ struct device_attribute attr;
+ char name[THERMAL_NAME_LENGTH];
+};
+
+static inline bool cdev_is_power_actor(struct thermal_cooling_device *cdev)
+{
+ return cdev->ops->get_requested_power && cdev->ops->state2power &&
+ cdev->ops->power2state;
+}
+
+void thermal_cdev_update(struct thermal_cooling_device *);
+void __thermal_cdev_update(struct thermal_cooling_device *cdev);
+
+int get_tz_trend(struct thermal_zone_device *tz, int trip);
+
+struct thermal_instance *
+get_thermal_instance(struct thermal_zone_device *tz,
+ struct thermal_cooling_device *cdev,
+ int trip);
+
+/*
+ * This structure is used to describe the behavior of
+ * a certain cooling device on a certain trip point
+ * in a certain thermal zone
+ */
+struct thermal_instance {
+ int id;
+ char name[THERMAL_NAME_LENGTH];
+ struct thermal_zone_device *tz;
+ struct thermal_cooling_device *cdev;
+ int trip;
+ bool initialized;
+ unsigned long upper; /* Highest cooling state for this trip point */
+ unsigned long lower; /* Lowest cooling state for this trip point */
+ unsigned long target; /* expected cooling state */
+ char attr_name[THERMAL_NAME_LENGTH];
+ struct device_attribute attr;
+ char weight_attr_name[THERMAL_NAME_LENGTH];
+ struct device_attribute weight_attr;
+ struct list_head tz_node; /* node in tz->thermal_instances */
+ struct list_head cdev_node; /* node in cdev->thermal_instances */
+ unsigned int weight; /* The weight of the cooling device */
+};
+
+#define to_thermal_zone(_dev) \
+ container_of(_dev, struct thermal_zone_device, device)
+
+#define to_cooling_device(_dev) \
+ container_of(_dev, struct thermal_cooling_device, device)
+
+int thermal_register_governor(struct thermal_governor *);
+void thermal_unregister_governor(struct thermal_governor *);
+int thermal_zone_device_set_policy(struct thermal_zone_device *, char *);
+int thermal_build_list_of_policies(char *buf);
+
+/* Helpers */
+void thermal_zone_set_trips(struct thermal_zone_device *tz);
+void __thermal_zone_set_trips(struct thermal_zone_device *tz);
+int __thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp);
+
+/* sysfs I/F */
+int thermal_zone_create_device_groups(struct thermal_zone_device *, int);
+void thermal_zone_destroy_device_groups(struct thermal_zone_device *);
+void thermal_cooling_device_setup_sysfs(struct thermal_cooling_device *);
+void thermal_cooling_device_destroy_sysfs(struct thermal_cooling_device *cdev);
+/* used only at binding time */
+ssize_t trip_point_show(struct device *, struct device_attribute *, char *);
+ssize_t weight_show(struct device *, struct device_attribute *, char *);
+ssize_t weight_store(struct device *, struct device_attribute *, const char *,
+ size_t);
+
+#ifdef CONFIG_THERMAL_STATISTICS
+void thermal_cooling_device_stats_update(struct thermal_cooling_device *cdev,
+ unsigned long new_state);
+#else
+static inline void
+thermal_cooling_device_stats_update(struct thermal_cooling_device *cdev,
+ unsigned long new_state) {}
+#endif /* CONFIG_THERMAL_STATISTICS */
+
+/* device tree support */
+#ifdef CONFIG_THERMAL_OF
+int of_thermal_get_ntrips(struct thermal_zone_device *);
+bool of_thermal_is_trip_valid(struct thermal_zone_device *, int);
+const struct thermal_trip *
+of_thermal_get_trip_points(struct thermal_zone_device *);
+#else
+static inline int of_thermal_get_ntrips(struct thermal_zone_device *tz)
+{
+ return 0;
+}
+static inline bool of_thermal_is_trip_valid(struct thermal_zone_device *tz,
+ int trip)
+{
+ return false;
+}
+static inline const struct thermal_trip *
+of_thermal_get_trip_points(struct thermal_zone_device *tz)
+{
+ return NULL;
+}
+#endif
+
+int thermal_zone_device_is_enabled(struct thermal_zone_device *tz);
+
+#endif /* __THERMAL_CORE_H__ */