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PM / devfreq: Allow devfreq driver to add custom sysfs ABIs

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Extend the devfreq_dev_profile to allow drivers optionally create
device-specific sysfs ABIs together with other common devfreq ABIs under
the devfreq device path.

Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Jie Zhan <zhanjie9@hisilicon.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Link: https://patchwork.kernel.org/project/linux-pm/patch/20250623143401.4095045-2-zhanjie9@hisilicon.com/
This commit is contained in:
Jie Zhan 2025-06-23 22:34:00 +08:00 • committed by Chanwoo Choi
parent c3bc361393
commit 45b9d1da6c
2 changed files with 5 additions and 0 deletions
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1
drivers/devfreq/devfreq.c
View file

@ -831,6 +831,7 @@ struct devfreq *devfreq_add_device(struct device *dev,
mutex_lock(&devfreq->lock);
devfreq->dev.parent = dev;
devfreq->dev.class = devfreq_class;
devfreq->dev.groups = profile->dev_groups;
devfreq->dev.release = devfreq_dev_release;
INIT_LIST_HEAD(&devfreq->node);
devfreq->profile = profile;

4
include/linux/devfreq.h
View file

@ -103,6 +103,8 @@ struct devfreq_dev_status {
*
* @is_cooling_device: A self-explanatory boolean giving the device a
* cooling effect property.
* @dev_groups: Optional device-specific sysfs attribute groups that to
* be attached to the devfreq device.
*/
struct devfreq_dev_profile {
unsigned long initial_freq;
@ -119,6 +121,8 @@ struct devfreq_dev_profile {
unsigned int max_state;
bool is_cooling_device;
const struct attribute_group **dev_groups;
};
/**