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drm/etnaviv: Warn when GPU doesn't idle fast enough

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If the GPU isn't idle after signalling pm_runtime_mark_last_busy() plus
waiting for the autosuspend delay there's likely something wrong with
the way we check idleness so warn about that.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
This commit is contained in:
Guido Günther 2020-03-02 20:13:36 +01:00 committed by Lucas Stach
parent 1a910c11d3
commit 78f2bfa318
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/etnaviv/etnaviv_gpu.c
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@ -1839,8 +1839,11 @@ static int etnaviv_gpu_rpm_suspend(struct device *dev)
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)
if (idle != mask) {
dev_warn_ratelimited(dev, "GPU not yet idle, mask: 0x%08x\n",
idle);
return -EBUSY;
}
return etnaviv_gpu_hw_suspend(gpu);
}