[Intel-gfx] [PATCH v2] drm/i915/adlp: Extend PSR2 support in transcoder B

[Kahola, Mika]

> -----Original Message-----
> From: Souza, Jose <jose.souza at intel.com>
> Sent: Wednesday, October 27, 2021 9:06 PM
> To: intel-gfx at lists.freedesktop.org
> Cc: Hogander, Jouni <jouni.hogander at intel.com>; Nikula, Jani
> <jani.nikula at intel.com>; Kahola, Mika <mika.kahola at intel.com>; Souza, Jose
> <jose.souza at intel.com>
> Subject: [PATCH v2] drm/i915/adlp: Extend PSR2 support in transcoder B
> 
> PSR2 is supported in transcoder A and B on Alderlake-P.
> 
> v2:
> - explicity checking for transcoder A and B to avoid invalid transcoder
> 
> BSpec: 49185
> Reviewed-by: Jouni Högander <jouni.hogander at intel.com> # v1

Reviewed-by: Mika Kahola <mika.kahola at intel.com> # v2

> Cc: Jani Nikula <jani.nikula at intel.com>
> 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>
> ---
>  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 8d08e3cf08c1f..33b50646b9c97 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_A || trans == TRANSCODER_B;
> +	else if (DISPLAY_VER(dev_priv) >= 12)
>  		return trans == TRANSCODER_A;
>  	else
>  		return trans == TRANSCODER_EDP;
> --
> 2.33.1