Without that runtime suspend is often blocked due to
etnaviv_gpu_rpm_suspend() returning -EBUSY since the FE seems to trigger
the MC in its idle loop.
Ignoring the MC bit makes the GPU suspend as expected. This was tested
on GC7000.
Signed-off-by: Guido Günther <[email protected]>
---
drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index 187de610b325..da24e433f82a 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -1820,8 +1820,9 @@ static int etnaviv_gpu_rpm_suspend(struct device *dev)
if (atomic_read(&gpu->sched.hw_rq_count))
return -EBUSY;
- /* Check whether the hardware (except FE) is idle */
- mask = gpu->idle_mask & ~VIVS_HI_IDLE_STATE_FE;
+ /* Check whether the hardware (except FE and MC) is idle */
+ mask = gpu->idle_mask & ~(VIVS_HI_IDLE_STATE_FE |
+ VIVS_HI_IDLE_STATE_MC);
idle = gpu_read(gpu, VIVS_HI_IDLE_STATE) & mask;
if (idle != mask)
return -EBUSY;
--
2.23.0