[Intel-gfx] [PATCH] drm/i915/adlp: Extend PSR2 support in transcoder B

[Hogander, Jouni]

On Tue, 2021-10-26 at 15:33 -0700, José Roberto de Souza wrote:
> PSR2 is supported in transcoder A and B on Alderlake-P.
> 
> BSpec: 49185
> Cc: Mika Kahola <mika.kahola at intel.com>
> Cc: Jouni Hogander <jouni.hogander at intel.com>
> Signed-off-by: José Roberto de Souza <jose.souza at intel.com>

LGTM

Reviewed-by: Jouni Högander <jouni.hogander at intel.com>

> ---
>  drivers/gpu/drm/i915/display/intel_psr.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
> b/drivers/gpu/drm/i915/display/intel_psr.c
> index d35db50ef967a..710b911b065b9 100644
> --- a/drivers/gpu/drm/i915/display/intel_psr.c
> +++ b/drivers/gpu/drm/i915/display/intel_psr.c
> @@ -588,7 +588,9 @@ static void hsw_activate_psr2(struct intel_dp
> *intel_dp)
>  static bool
>  transcoder_has_psr2(struct drm_i915_private *dev_priv, enum
> transcoder trans)
>  {
> -	if (DISPLAY_VER(dev_priv) >= 12)
> +	if (IS_ALDERLAKE_P(dev_priv))
> +		return trans <= TRANSCODER_B;
> +	else if (DISPLAY_VER(dev_priv) >= 12)
>  		return trans == TRANSCODER_A;
>  	else
>  		return trans == TRANSCODER_EDP;