On 2019-10-23 at 14:49:32 -0700, José Roberto de Souza wrote:
> Right now if sink reported any PSR error or if it fails to
> acknowledge the PSR wakeup it sets a flag and do not attempt to
> enable PSR anymore. That is the safest approach to avoid repetitive
> glitches and allowed us to have PSR enabled by default.
>
> But from time to time even good PSR panels have a PSR error, causing
> tests to fail. And for now we are not yet to the point were we could
> try to recover from PSR errors, so lets add this information to the
> debugfs so IGT can check if PSR is disabled because of sink errors or
> not and eliminate this noise from CI runs.
>
> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
> Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
> Cc: Ap Kamal <kamal.ap@xxxxxxxxx>
> Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_debugfs.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index bc0bdf0419e0..07e368ec4fb8 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -2194,8 +2194,12 @@ static int i915_edp_psr_status(struct seq_file *m, void *data)
> status = "disabled";
> seq_printf(m, "PSR mode: %s\n", status);
>
> - if (!psr->enabled)
> + if (!psr->enabled) {
> + seq_printf(m, "PSR sink not reliable: %s\n",
> + yesno(psr->sink_not_reliable));
> +
> goto unlock;
> + }
Looks Good to me. As CI will be told where(Source/Destination) the error occured.
Reviewed-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
>
> if (psr->psr2_enabled) {
> val = I915_READ(EDP_PSR2_CTL(dev_priv->psr.transcoder));
> --
> 2.23.0
>
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