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| author | Akhil P Oommen <quic_akhilpo@quicinc.com> | 2022-08-19 01:52:13 +0530 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2022-08-28 09:29:27 -0700 |
| commit | 1f6cca404918d2d3bc476afb31b371a406009c06 (patch) | |
| tree | b783ec53c681b5e2e62552c3dced09058364dd2a /drivers/gpu/drm/msm/msm_gpu.h | |
| parent | f350bfb92b5a89f8056b0e218e05522665e8ac9a (diff) | |
| download | linux-1f6cca404918d2d3bc476afb31b371a406009c06.tar.gz | |
drm/msm/a6xx: Ensure CX collapse during gpu recovery
Because there could be transient votes from other drivers/tz/hyp which
may keep the cx gdsc enabled, we should poll until cx gdsc collapses.
We can use the reset framework to poll for cx gdsc collapse from gpucc
clk driver.
This feature requires support from the platform's gpucc driver.
Signed-off-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Patchwork: https://patchwork.freedesktop.org/patch/498397/
Link: https://lore.kernel.org/r/20220819015030.v5.5.I176567525af2b9439a7e485d0ca130528666a55c@changeid
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_gpu.h')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_gpu.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h index a0885ff99e5b..ff911e7305ce 100644 --- a/drivers/gpu/drm/msm/msm_gpu.h +++ b/drivers/gpu/drm/msm/msm_gpu.h @@ -13,6 +13,7 @@ #include <linux/interconnect.h> #include <linux/pm_opp.h> #include <linux/regulator/consumer.h> +#include <linux/reset.h> #include "msm_drv.h" #include "msm_fence.h" @@ -271,6 +272,9 @@ struct msm_gpu { bool hw_apriv; struct thermal_cooling_device *cooling; + + /* To poll for cx gdsc collapse during gpu recovery */ + struct reset_control *cx_collapse; }; static inline struct msm_gpu *dev_to_gpu(struct device *dev) |