mirror of
https://github.com/torvalds/linux.git
synced 2024-11-11 14:42:24 +00:00
47c4b0de08
The thermal framework implements a netlink notification mechanism to be used by the userspace to have a thermal configuration discovery, trip point changes or violation, cooling device changes notifications, etc... This library provides a level of abstraction for the thermal netlink notification allowing the userspace to connect to the notification mechanism more easily. The library is callback oriented. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Tested-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Link: https://lore.kernel.org/r/20220420160933.347088-2-daniel.lezcano@linaro.org
136 lines
2.1 KiB
C
136 lines
2.1 KiB
C
// SPDX-License-Identifier: LGPL-2.1+
|
|
// Copyright (C) 2022, Linaro Ltd - Daniel Lezcano <daniel.lezcano@linaro.org>
|
|
#include <stdio.h>
|
|
#include <thermal.h>
|
|
|
|
#include "thermal_nl.h"
|
|
|
|
int for_each_thermal_cdev(struct thermal_cdev *cdev, cb_tc_t cb, void *arg)
|
|
{
|
|
int i, ret = 0;
|
|
|
|
if (!cdev)
|
|
return 0;
|
|
|
|
for (i = 0; cdev[i].id != -1; i++)
|
|
ret |= cb(&cdev[i], arg);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int for_each_thermal_trip(struct thermal_trip *tt, cb_tt_t cb, void *arg)
|
|
{
|
|
int i, ret = 0;
|
|
|
|
if (!tt)
|
|
return 0;
|
|
|
|
for (i = 0; tt[i].id != -1; i++)
|
|
ret |= cb(&tt[i], arg);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int for_each_thermal_zone(struct thermal_zone *tz, cb_tz_t cb, void *arg)
|
|
{
|
|
int i, ret = 0;
|
|
|
|
if (!tz)
|
|
return 0;
|
|
|
|
for (i = 0; tz[i].id != -1; i++)
|
|
ret |= cb(&tz[i], arg);
|
|
|
|
return ret;
|
|
}
|
|
|
|
struct thermal_zone *thermal_zone_find_by_name(struct thermal_zone *tz,
|
|
const char *name)
|
|
{
|
|
int i;
|
|
|
|
if (!tz || !name)
|
|
return NULL;
|
|
|
|
for (i = 0; tz[i].id != -1; i++) {
|
|
if (!strcmp(tz[i].name, name))
|
|
return &tz[i];
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct thermal_zone *thermal_zone_find_by_id(struct thermal_zone *tz, int id)
|
|
{
|
|
int i;
|
|
|
|
if (!tz || id < 0)
|
|
return NULL;
|
|
|
|
for (i = 0; tz[i].id != -1; i++) {
|
|
if (tz[i].id == id)
|
|
return &tz[i];
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int __thermal_zone_discover(struct thermal_zone *tz, void *th)
|
|
{
|
|
if (thermal_cmd_get_trip(th, tz) < 0)
|
|
return -1;
|
|
|
|
if (thermal_cmd_get_governor(th, tz))
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct thermal_zone *thermal_zone_discover(struct thermal_handler *th)
|
|
{
|
|
struct thermal_zone *tz;
|
|
|
|
if (thermal_cmd_get_tz(th, &tz) < 0)
|
|
return NULL;
|
|
|
|
if (for_each_thermal_zone(tz, __thermal_zone_discover, th))
|
|
return NULL;
|
|
|
|
return tz;
|
|
}
|
|
|
|
void thermal_exit(struct thermal_handler *th)
|
|
{
|
|
thermal_cmd_exit(th);
|
|
thermal_events_exit(th);
|
|
thermal_sampling_exit(th);
|
|
|
|
free(th);
|
|
}
|
|
|
|
struct thermal_handler *thermal_init(struct thermal_ops *ops)
|
|
{
|
|
struct thermal_handler *th;
|
|
|
|
th = malloc(sizeof(*th));
|
|
if (!th)
|
|
return NULL;
|
|
th->ops = ops;
|
|
|
|
if (thermal_events_init(th))
|
|
goto out_free;
|
|
|
|
if (thermal_sampling_init(th))
|
|
goto out_free;
|
|
|
|
if (thermal_cmd_init(th))
|
|
goto out_free;
|
|
|
|
return th;
|
|
|
|
out_free:
|
|
free(th);
|
|
|
|
return NULL;
|
|
}
|