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@xxxxxxxxx>
> Cc: Jouni Hogander <jouni.hogander@xxxxxxxxx>
> Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
LGTM
Reviewed-by: Jouni Högander <jouni.hogander@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 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;
