On Wed, 2018-03-28 at 15:30 -0700, José Roberto de Souza wrote:
> IGT tests could be improved with sink status, knowing for sure that
> hardware have activate or exit PSR.
> 
> Cc: Dhinakaran Pandiyan <dhinakaran.pandi...@intel.com>
> Cc: Rodrigo Vivi <rodrigo.v...@intel.com>
> Signed-off-by: José Roberto de Souza <jose.so...@intel.com>
> ---
> 
> v3: rebased
> 
>  drivers/gpu/drm/i915/i915_debugfs.c | 29 +++++++++++++++++++++++++++++
>  1 file changed, 29 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c 
> b/drivers/gpu/drm/i915/i915_debugfs.c
> index 1dba2c451255..89dc5b05ec24 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -2603,6 +2603,26 @@ static const char *psr2_live_status(u32 val)
>       return "unknown";
>  }
>  
> +static const char *psr_sink_self_refresh_status(u8 val)
nit:                 psr_sink_status() is concise, "psr_self_refresh" sounds
redundant.

> +{
> +     static const char * const sink_status[] = {
> +             "inactive",
> +             "transitioning to active",

We muddle the meaning of these statuses by paraphrasing, it is better
write these strings exactly as the states are defined in the spec.

> +             "active",
> +             "active receiving selective update",

For example, this state corresponds to the capture of full static frame
too.


Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandi...@intel.com> with
the nits addressed, thanks for the patch.

> +             "transitioning to inactive",
> +             "reserved",
> +             "reserved",
> +             "sink internal error"
> +     };
> +
> +     val &= DP_PSR_SINK_STATE_MASK;
> +     if (val < ARRAY_SIZE(sink_status))
> +             return sink_status[val];
> +
> +     return "unknown";
> +}
> +
>  static int i915_edp_psr_status(struct seq_file *m, void *data)
>  {
>       struct drm_i915_private *dev_priv = node_to_i915(m->private);
> @@ -2684,6 +2704,15 @@ static int i915_edp_psr_status(struct seq_file *m, 
> void *data)
>               seq_printf(m, "EDP_PSR2_STATUS: %x [%s]\n",
>                          psr2, psr2_live_status(psr2));
>       }
> +
> +     if (dev_priv->psr.enabled) {
> +             struct drm_dp_aux *aux = &dev_priv->psr.enabled->aux;
> +             u8 val;
> +
> +             if (drm_dp_dpcd_readb(aux, DP_PSR_STATUS, &val) == 1)
> +                     seq_printf(m, "Sink self refresh status: 0x%x [%s]\n",
> +                                val, psr_sink_self_refresh_status(val));
> +     }
>       mutex_unlock(&dev_priv->psr.lock);
>  
>       intel_runtime_pm_put(dev_priv);
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

Reply via email to