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drm/msm: workaround for missing irq on a306/8x16 

Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Rob Clark 2015-05-12 11:29:40 -04:00
parent de558cd2ae
commit d735fdc35b
1 changed files with 11 additions and 0 deletions
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11
drivers/gpu/drm/msm/adreno/adreno_gpu.c
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@ -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 */