diff options
| author | Akhil P Oommen <akhilpo@codeaurora.org> | 2020-10-30 16:17:10 +0530 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2020-11-05 08:39:57 -0800 |
| commit | ec793cf01d1fe7f2d3eef30a0accfb3ca880abe4 (patch) | |
| tree | 9018762dbbc3e3934107e513063bd2ee27deed45 /drivers/gpu/drm | |
| parent | cf11c1f89d5209d20cdf4040f5b26253014026ad (diff) | |
| download | lwn-ec793cf01d1fe7f2d3eef30a0accfb3ca880abe4.tar.gz lwn-ec793cf01d1fe7f2d3eef30a0accfb3ca880abe4.zip | |
drm/msm: Add support for GPU cooling
Register GPU as a devfreq cooling device so that it can be passively
cooled by the thermal framework.
Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
Tested-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_gpu.c | 12 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/msm_gpu.h | 2 |
2 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index dbb8400f1872..dfa3b5ad2099 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -14,6 +14,7 @@ #include <generated/utsrelease.h> #include <linux/string_helpers.h> #include <linux/devfreq.h> +#include <linux/devfreq_cooling.h> #include <linux/devcoredump.h> #include <linux/sched/task.h> @@ -107,9 +108,18 @@ static void msm_devfreq_init(struct msm_gpu *gpu) if (IS_ERR(gpu->devfreq.devfreq)) { DRM_DEV_ERROR(&gpu->pdev->dev, "Couldn't initialize GPU devfreq\n"); gpu->devfreq.devfreq = NULL; + return; } devfreq_suspend_device(gpu->devfreq.devfreq); + + gpu->cooling = of_devfreq_cooling_register(gpu->pdev->dev.of_node, + gpu->devfreq.devfreq); + if (IS_ERR(gpu->cooling)) { + DRM_DEV_ERROR(&gpu->pdev->dev, + "Couldn't register GPU cooling device\n"); + gpu->cooling = NULL; + } } static int enable_pwrrail(struct msm_gpu *gpu) @@ -1044,4 +1054,6 @@ void msm_gpu_cleanup(struct msm_gpu *gpu) if (gpu->worker) { kthread_destroy_worker(gpu->worker); } + + devfreq_cooling_unregister(gpu->cooling); } diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h index 09938ae114ec..786cfc285be0 100644 --- a/drivers/gpu/drm/msm/msm_gpu.h +++ b/drivers/gpu/drm/msm/msm_gpu.h @@ -155,6 +155,8 @@ struct msm_gpu { struct msm_gpu_state *crashstate; /* True if the hardware supports expanded apriv (a650 and newer) */ bool hw_apriv; + + struct thermal_cooling_device *cooling; }; static inline struct msm_gpu *dev_to_gpu(struct device *dev) |