From d735fdc35b4433abb736e843cfd2d34913344b3a Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Tue, 12 May 2015 11:29:40 -0400 Subject: [PATCH] drm/msm: workaround for missing irq on a306/8x16 Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/adreno/adreno_gpu.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c index 031579e1481f..a3b54cc76495 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -176,6 +176,17 @@ int adreno_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit, OUT_PKT3(ring, CP_INTERRUPT, 1); OUT_RING(ring, 0x80000000); + /* Workaround for missing irq issue on 8x16/a306. Unsure if the + * root cause is a platform issue or some a306 quirk, but this + * keeps things humming along: + */ + if (adreno_is_a306(adreno_gpu)) { + OUT_PKT3(ring, CP_WAIT_FOR_IDLE, 1); + OUT_RING(ring, 0x00000000); + OUT_PKT3(ring, CP_INTERRUPT, 1); + OUT_RING(ring, 0x80000000); + } + #if 0 if (adreno_is_a3xx(adreno_gpu)) { /* Dummy set-constant to trigger context rollover */