From: Akhil P Oommen <akhilpo@codeaurora.org>
To: freedreno@lists.freedesktop.org, robh@kernel.org, robdclark@gmail.com
Cc: dri-devel@freedesktop.org, linux-arm-msm@vger.kernel.org,
linux-kernel@vger.kernel.org, jcrouse@codeaurora.org,
mka@chromium.org
Subject: [PATCH 2/2] drm/msm: Add support for GPU cooling
Date: Thu, 8 Oct 2020 22:39:07 +0530 [thread overview]
Message-ID: <1602176947-17385-2-git-send-email-akhilpo@codeaurora.org> (raw)
In-Reply-To: <1602176947-17385-1-git-send-email-akhilpo@codeaurora.org>
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>
---
drivers/gpu/drm/msm/msm_gpu.c | 13 ++++++++++++-
drivers/gpu/drm/msm/msm_gpu.h | 2 ++
2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index 55d1648..93ffd66 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)
@@ -926,7 +936,6 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
msm_devfreq_init(gpu);
-
gpu->aspace = gpu->funcs->create_address_space(gpu, pdev);
if (gpu->aspace == NULL)
@@ -1005,4 +1014,6 @@ void msm_gpu_cleanup(struct msm_gpu *gpu)
gpu->aspace->mmu->funcs->detach(gpu->aspace->mmu);
msm_gem_address_space_put(gpu->aspace);
}
+
+ devfreq_cooling_unregister(gpu->cooling);
}
diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index 6c9e1fd..9a8f20d 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h
@@ -147,6 +147,8 @@ 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)
--
2.7.4
next prev parent reply other threads:[~2020-10-08 17:10 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-08 17:09 [PATCH 1/2] arm64: dts: qcom: sc7180: Add gpu cooling support Akhil P Oommen
2020-10-08 17:09 ` Akhil P Oommen [this message]
2020-10-09 18:36 ` [2/2] drm/msm: Add support for GPU cooling mka
2020-10-12 13:33 ` Akhil P Oommen
2020-10-12 17:40 ` mka
2020-10-13 13:53 ` Akhil P Oommen
2020-10-13 17:40 ` mka
2020-10-13 19:21 ` Akhil P Oommen
2020-10-14 1:09 ` mka
2020-10-09 15:05 ` [PATCH 1/2] arm64: dts: qcom: sc7180: Add gpu cooling support Doug Anderson
2020-10-09 16:57 ` Matthias Kaehlcke
2020-10-14 13:29 ` Akhil P Oommen
2020-10-14 18:37 ` manafm
2020-10-15 22:19 ` Matthias Kaehlcke
2020-10-16 13:46 ` Akhil P Oommen
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