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drm/msm/a5xx: Skip hardware preemption init if no preemption 

In the case where preemption is not enabled, this patch simply skips
preemption related initialization in hardware init sequence.

Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Sharat Masetty 2018-09-14 14:08:55 +05:30 committed by Rob Clark
parent dfdb3be43e
commit fc6510ac49
1 changed files with 7 additions and 3 deletions
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10
drivers/gpu/drm/msm/adreno/a5xx_preempt.c
View File

@ -208,6 +208,13 @@ void a5xx_preempt_hw_init(struct msm_gpu *gpu)
struct a5xx_gpu *a5xx_gpu = to_a5xx_gpu(adreno_gpu);
int i;
/* Always come up on rb 0 */
a5xx_gpu->cur_ring = gpu->rb[0];
/* No preemption if we only have one ring */
if (gpu->nr_rings == 1)
return;
for (i = 0; i < gpu->nr_rings; i++) {
a5xx_gpu->preempt[i]->wptr = 0;
a5xx_gpu->preempt[i]->rptr = 0;
@ -220,9 +227,6 @@ void a5xx_preempt_hw_init(struct msm_gpu *gpu)
/* Reset the preemption state */
set_preempt_state(a5xx_gpu, PREEMPT_NONE);
/* Always come up on rb 0 */
a5xx_gpu->cur_ring = gpu->rb[0];
}
static int preempt_init_ring(struct a5xx_gpu *a5xx_gpu,