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authorDaniel Lezcano <daniel.lezcano@linaro.org>2020-07-06 13:55:36 +0300
committerDaniel Lezcano <daniel.lezcano@linaro.org>2020-07-07 16:55:21 +0300
commit329b064fbd13d6526fdc35d4a220adedeadf0816 (patch)
treec44eb04f650149b9be2cc91c31f06e749990c0c0 /drivers/thermal
parent3d44a509c1dafb75adfe218f022ad216885c135e (diff)
downloadlinux-329b064fbd13d6526fdc35d4a220adedeadf0816.tar.xz
thermal: core: Get thermal zone by id
The next patch will introduce the generic netlink protocol to handle events, sampling and command from the thermal framework. In order to deal with the thermal zone, it uses its unique identifier to characterize it in the message. Passing an integer is more efficient than passing an entire string. This change provides a function returning back a thermal zone pointer corresponding to the identifier passed as parameter. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Acked-by: Zhang Rui <rui.zhang@intel.com> Link: https://lore.kernel.org/r/20200706105538.2159-2-daniel.lezcano@linaro.org
Diffstat (limited to 'drivers/thermal')
-rw-r--r--drivers/thermal/thermal_core.c14
-rw-r--r--drivers/thermal/thermal_core.h2
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 438edd173eed..fc1270c8ce11 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -732,6 +732,20 @@ int for_each_thermal_zone(int (*cb)(struct thermal_zone_device *, void *),
return ret;
}
+struct thermal_zone_device *thermal_zone_get_by_id(int id)
+{
+ struct thermal_zone_device *tz = NULL;
+
+ mutex_lock(&thermal_list_lock);
+ list_for_each_entry(tz, &thermal_tz_list, node) {
+ if (tz->id == id)
+ break;
+ }
+ mutex_unlock(&thermal_list_lock);
+
+ return tz;
+}
+
void thermal_zone_device_unbind_exception(struct thermal_zone_device *tz,
const char *cdev_type, size_t size)
{
diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
index fc8990c22704..967b0ba6593e 100644
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -50,6 +50,8 @@ int for_each_thermal_cooling_device(int (*cb)(struct thermal_cooling_device *,
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];