> -----Original Message-----
> From: Souza, Jose <jose.souza@xxxxxxxxx>
> Sent: Wednesday, October 27, 2021 9:06 PM
> To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: Hogander, Jouni <jouni.hogander@xxxxxxxxx>; Nikula, Jani
> <jani.nikula@xxxxxxxxx>; Kahola, Mika <mika.kahola@xxxxxxxxx>; Souza, Jose
> <jose.souza@xxxxxxxxx>
> 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@xxxxxxxxx> # v1
Reviewed-by: Mika Kahola <mika.kahola@xxxxxxxxx> # v2
> Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
> Cc: Mika Kahola <mika.kahola@xxxxxxxxx>
> Cc: Jouni Hogander <jouni.hogander@xxxxxxxxx>
> Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
> ---
> 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
