linux/drivers/thermal/thermal_netlink.h
Stanislaw Gruszka cf580ad490 thermal: netlink: Add genetlink bind/unbind notifications
Introduce a new feature to the thermal netlink framework, enabling the
registration of sub drivers to receive events via a notifier mechanism.
Specifically, implement genetlink family bind and unbind callbacks to send
BIND and UNBIND events.

The primary purpose of this enhancement is to facilitate the tracking of
user-space consumers by the Intel HFI driver. By leveraging these
notifications, the driver can determine when consumers are present
or absent.

Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-03-27 14:50:26 +01:00

145 lines
3.7 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) Linaro Ltd 2020
* Author: Daniel Lezcano <daniel.lezcano@linaro.org>
*/
struct thermal_genl_cpu_caps {
int cpu;
int performance;
int efficiency;
};
enum thermal_genl_multicast_groups {
THERMAL_GENL_SAMPLING_GROUP = 0,
THERMAL_GENL_EVENT_GROUP = 1,
THERMAL_GENL_MAX_GROUP = THERMAL_GENL_EVENT_GROUP,
};
#define THERMAL_NOTIFY_BIND 0
#define THERMAL_NOTIFY_UNBIND 1
struct thermal_genl_notify {
int mcgrp;
};
struct thermal_zone_device;
struct thermal_trip;
struct thermal_cooling_device;
/* Netlink notification function */
#ifdef CONFIG_THERMAL_NETLINK
int __init thermal_netlink_init(void);
void __init thermal_netlink_exit(void);
int thermal_genl_register_notifier(struct notifier_block *nb);
int thermal_genl_unregister_notifier(struct notifier_block *nb);
int thermal_notify_tz_create(const struct thermal_zone_device *tz);
int thermal_notify_tz_delete(const struct thermal_zone_device *tz);
int thermal_notify_tz_enable(const struct thermal_zone_device *tz);
int thermal_notify_tz_disable(const struct thermal_zone_device *tz);
int thermal_notify_tz_trip_down(const struct thermal_zone_device *tz,
const struct thermal_trip *trip);
int thermal_notify_tz_trip_up(const struct thermal_zone_device *tz,
const struct thermal_trip *trip);
int thermal_notify_tz_trip_change(const struct thermal_zone_device *tz,
const struct thermal_trip *trip);
int thermal_notify_cdev_state_update(const struct thermal_cooling_device *cdev,
int state);
int thermal_notify_cdev_add(const struct thermal_cooling_device *cdev);
int thermal_notify_cdev_delete(const struct thermal_cooling_device *cdev);
int thermal_notify_tz_gov_change(const struct thermal_zone_device *tz,
const char *name);
int thermal_genl_sampling_temp(int id, int temp);
int thermal_genl_cpu_capability_event(int count,
struct thermal_genl_cpu_caps *caps);
#else
static inline int thermal_netlink_init(void)
{
return 0;
}
static inline int thermal_notify_tz_create(const struct thermal_zone_device *tz)
{
return 0;
}
static inline int thermal_genl_register_notifier(struct notifier_block *nb)
{
return 0;
}
static inline int thermal_genl_unregister_notifier(struct notifier_block *nb)
{
return 0;
}
static inline int thermal_notify_tz_delete(const struct thermal_zone_device *tz)
{
return 0;
}
static inline int thermal_notify_tz_enable(const struct thermal_zone_device *tz)
{
return 0;
}
static inline int thermal_notify_tz_disable(const struct thermal_zone_device *tz)
{
return 0;
}
static inline int thermal_notify_tz_trip_down(const struct thermal_zone_device *tz,
const struct thermal_trip *trip)
{
return 0;
}
static inline int thermal_notify_tz_trip_up(const struct thermal_zone_device *tz,
const struct thermal_trip *trip)
{
return 0;
}
static inline int thermal_notify_tz_trip_change(const struct thermal_zone_device *tz,
const struct thermal_trip *trip)
{
return 0;
}
static inline int thermal_notify_cdev_state_update(const struct thermal_cooling_device *cdev,
int state)
{
return 0;
}
static inline int thermal_notify_cdev_add(const struct thermal_cooling_device *cdev)
{
return 0;
}
static inline int thermal_notify_cdev_delete(const struct thermal_cooling_device *cdev)
{
return 0;
}
static inline int thermal_notify_tz_gov_change(const struct thermal_zone_device *tz,
const char *name)
{
return 0;
}
static inline int thermal_genl_sampling_temp(int id, int temp)
{
return 0;
}
static inline int thermal_genl_cpu_capability_event(int count, struct thermal_genl_cpu_caps *caps)
{
return 0;
}
static inline void __init thermal_netlink_exit(void) {}
#endif /* CONFIG_THERMAL_NETLINK */