[Intel-gfx] [PATCH v4] drm/i915/psr: Add PSR mode/revision to debugfs

[Dhinakaran Pandiyan]

On Wed, 2018-08-22 at 10:23 -0700, Azhar Shaikh wrote:
> Log the PSR mode/revision (PSR1 or PSR2) in the debugfs file
> i915_edp_psr_status.
> 
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>

> Suggested-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
> Signed-off-by: Azhar Shaikh <azhar.shaikh at intel.com>
> ---
> Changes in v4:
> - Fix the rebase error in v3 of adding typecast to bool
> - in i915_edp_psr_status(), which is not needed
> 
> Changes in v3:
> - rebased
> 
> Changes in v2:
> - Fix checkpatch warning.
> - Add Reviewed-by: from v1
> 
>  drivers/gpu/drm/i915/i915_debugfs.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
> b/drivers/gpu/drm/i915/i915_debugfs.c
> index 26b7e5276b15..544ec5cdfe9f 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -2708,6 +2708,8 @@ static int i915_edp_psr_status(struct seq_file
> *m, void *data)
>  	intel_runtime_pm_get(dev_priv);
>  
>  	mutex_lock(&dev_priv->psr.lock);
> +	seq_printf(m, "PSR mode: %s\n",
> +		   dev_priv->psr.psr2_enabled ? "PSR2" : "PSR1");
>  	seq_printf(m, "Enabled: %s\n", yesno(dev_priv-
> >psr.enabled));
>  	seq_printf(m, "Busy frontbuffer bits: 0x%03x\n",
>  		   dev_priv->psr.busy_frontbuffer_bits);