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drm/msm/a5xx: fix setting of the CP_PREEMPT_ENABLE_LOCAL register

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[ Upstream commit a7a4c19c36 ]

Rather than writing CP_PREEMPT_ENABLE_GLOBAL twice, follow the vendor
kernel and set CP_PREEMPT_ENABLE_LOCAL register instead. a5xx_submit()
will override it during submission, but let's get the sequence correct.

Fixes: b1fc2839d2 ("drm/msm: Implement preemption for A5XX targets")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/522638/
Link: https://lore.kernel.org/r/20230214020956.164473-2-dmitry.baryshkov@linaro.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dmitry Baryshkov
2023-02-14 05:09:53 +03:00
committed by Greg Kroah-Hartman
parent 08c0b54bef
commit 00c2020b8b
1 changed files with 2 additions and 2 deletions
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drivers/gpu/drm/msm/adreno/a5xx_gpu.c
+2 -2
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@@ -144,8 +144,8 @@ static void a5xx_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit)
OUT_RING(ring, 1);
/* Enable local preemption for finegrain preemption */
OUT_PKT7(ring, CP_PREEMPT_ENABLE_GLOBAL, 1);
OUT_RING(ring, 0x02);
OUT_PKT7(ring, CP_PREEMPT_ENABLE_LOCAL, 1);
OUT_RING(ring, 0x1);
/* Allow CP_CONTEXT_SWITCH_YIELD packets in the IB2 */
OUT_PKT7(ring, CP_YIELD_ENABLE, 1);