Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit f5a70edb authored by Felix Xiong's avatar Felix Xiong Committed by Sharat Masetty
Browse files

drm/msm: Register GPU devfreq to allow thermal mitigation 



To allow thermal framework to scale the GPU frequency to mitigate
the GPU temperature. Register GPU as a devfreq based cooling device.

Change-Id: I01176ef96a69f1aa90d30f14f5c9d940e97cc188
Signed-off-by: default avatarFelix Xiong <xayang@codeaurora.org>
Signed-off-by: default avatarVenkateswara Rao Tadikonda <vtadik@codeaurora.org>
Signed-off-by: default avatarSharat Masetty <smasetty@codeaurora.org>
parent bb69facb

drivers/gpu/drm/msm/msm_gpu.c

+13 −1
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 
 */



#include <linux/devfreq.h>

#include <linux/devfreq_cooling.h>

#include "msm_gpu.h"

#include "msm_gem.h"

#include "msm_mmu.h"
@@ -133,6 +134,15 @@ static void msm_devfreq_init(struct msm_gpu *gpu) 
	if (IS_ERR(gpu->devfreq.devfreq)) {

		dev_err(dev, "Couldn't initialize GPU devfreq\n");

		gpu->devfreq.devfreq = NULL;

		return;

	}



	gpu->devfreq.cooling_dev = of_devfreq_cooling_register(

		dev->of_node, gpu->devfreq.devfreq);



	if (IS_ERR(gpu->devfreq.cooling_dev)) {

		dev_err(dev, "Couldn't register GPU devfreq cooling device\n");

		gpu->devfreq.cooling_dev = NULL;

	}

}
@@ -1117,8 +1127,10 @@ void msm_gpu_cleanup(struct msm_gpu *gpu) 


	WARN_ON(!list_empty(&gpu->active_list));



	if (gpu->devfreq.devfreq)

	if (gpu->devfreq.devfreq) {

		devfreq_cooling_unregister(gpu->devfreq.cooling_dev);

		devfreq_remove_device(gpu->devfreq.devfreq);

	}



	if (gpu->irq >= 0) {

		disable_irq(gpu->irq);

drivers/gpu/drm/msm/msm_gpu.h

+1 −0
Original line number Diff line number Diff line
@@ -154,6 +154,7 @@ struct msm_gpu { 
		struct devfreq *devfreq;

		u64 busy_cycles;

		ktime_t time;

		struct thermal_cooling_device *cooling_dev;

	} devfreq;

};