[PATCH v9 06/12] drm/i915/psr: Detect panel replay selective update support

[Manna, Animesh]

> -----Original Message-----
> From: Hogander, Jouni <jouni.hogander at intel.com>
> Sent: Friday, May 3, 2024 12:04 PM
> To: intel-gfx at lists.freedesktop.org
> Cc: Manna, Animesh <animesh.manna at intel.com>; Hogander, Jouni
> <jouni.hogander at intel.com>
> Subject: [PATCH v9 06/12] drm/i915/psr: Detect panel replay selective update
> support
> 
> Add new boolean to store panel replay selective update support of sink into
> intel_psr struct.  Detect panel replay selective update support and store it
> into this new boolean.
> 
> v3: Clear sink_panel_replay_su_support in intel_dp_detect
> v2: Merge adding new boolean into this patch
> 
> Signed-off-by: Jouni Högander <jouni.hogander at intel.com>

Reviewed-by: Animesh Manna <animesh.manna at intel.com>

> ---
>  drivers/gpu/drm/i915/display/intel_display_types.h |  1 +
>  drivers/gpu/drm/i915/display/intel_dp.c            |  1 +
>  drivers/gpu/drm/i915/display/intel_psr.c           | 10 ++++++++--
>  3 files changed, 10 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h
> b/drivers/gpu/drm/i915/display/intel_display_types.h
> index 150e6c8e0320..a693728f8344 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_types.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_types.h
> @@ -1719,6 +1719,7 @@ struct intel_psr {
>  	u16 su_y_granularity;
>  	bool source_panel_replay_support;
>  	bool sink_panel_replay_support;
> +	bool sink_panel_replay_su_support;
>  	bool panel_replay_enabled;
>  	u32 dc3co_exitline;
>  	u32 dc3co_exit_delay;
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c
> b/drivers/gpu/drm/i915/display/intel_dp.c
> index 5731aa84992e..180f23f7b383 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -5858,6 +5858,7 @@ intel_dp_detect(struct drm_connector *connector,
>  		memset(&intel_dp->compliance, 0, sizeof(intel_dp-
> >compliance));
>  		memset(intel_connector->dp.dsc_dpcd, 0,
> sizeof(intel_connector->dp.dsc_dpcd));
>  		intel_dp->psr.sink_panel_replay_support = false;
> +		intel_dp->psr.sink_panel_replay_su_support = false;
> 
>  		intel_dp_mst_disconnect(intel_dp);
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
> b/drivers/gpu/drm/i915/display/intel_psr.c
> index af18728460c9..b94f8e33ed1f 100644
> --- a/drivers/gpu/drm/i915/display/intel_psr.c
> +++ b/drivers/gpu/drm/i915/display/intel_psr.c
> @@ -520,9 +520,15 @@ static void _panel_replay_init_dpcd(struct intel_dp
> *intel_dp)
>  		return;
>  	}
> 
> -	drm_dbg_kms(&i915->drm,
> -		    "Panel replay is supported by panel\n");
>  	intel_dp->psr.sink_panel_replay_support = true;
> +
> +	if (pr_dpcd & DP_PANEL_REPLAY_SU_SUPPORT)
> +		intel_dp->psr.sink_panel_replay_su_support = true;
> +
> +	drm_dbg_kms(&i915->drm,
> +		    "Panel replay %sis supported by panel\n",
> +		    intel_dp->psr.sink_panel_replay_su_support ?
> +		    "selective_update " : "");
>  }
> 
>  static void _psr_init_dpcd(struct intel_dp *intel_dp)
> --
> 2.34.1