On 2/16/2024 7:50 PM, Mitul Golani wrote:
Add necessary functions definitions to enable
and compute AS SDP data. The new `intel_dp_compute_as_sdp`
function computes AS SDP values based on the display
configuration, ensuring proper handling of Variable Refresh
Rate (VRR).
--v2:
- Add DP_SDP_ADAPTIVE_SYNC to infoframe_type_to_idx().[Ankit]
- separate patch for intel_read/write_dp_sdp [Ankit].
- _HSW_VIDEO_DIP_ASYNC_DATA_A should be from ADL onward [Ankit]
- To fix indentation [Ankit]
--v3:
- Add VIDEO_DIP_ENABLE_AS_HSW flag to intel_dp_set_infoframes.
--v4:
- Add HAS_VRR check before write as sdp.
--v5:
- Add missed HAS_VRR check before read as sdp.
--v6:
Use Adaptive Sync sink status, which can be
used as a check for read/write sdp. (Ankit)
Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_dp.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index d68fb9d45054..0759266e7bfb 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -2617,6 +2617,25 @@ static void intel_dp_compute_vsc_colorimetry(const struct intel_crtc_state *crtc
vsc->content_type = DP_CONTENT_TYPE_NOT_DEFINED;
}
+static void intel_dp_compute_as_sdp(struct intel_dp *intel_dp,
+ struct intel_crtc_state *crtc_state,
+ const struct drm_connector_state *conn_state)
+{
+ struct drm_dp_as_sdp *as_sdp = &crtc_state->infoframes.as_sdp;
+ struct intel_connector *connector = intel_dp->attached_connector;
+ const struct drm_display_mode *adjusted_mode =
+ &crtc_state->hw.adjusted_mode;
+ int vrefresh = drm_mode_vrefresh(adjusted_mode);
+
+ if (!intel_vrr_is_in_range(connector, vrefresh))
+ return;
I think there should be 2 variables in crtc_state->vrras_sdp_enable and
as_sdp_mode.
as_sdp_enable to track, if we really need to send the as_sdp and the
as_sdp_mode to track which mode we want (AVT/FAVT)
We fill these in vrr_compute_config, along with other members like trans
vrr_sync_start/end.
Here we can check if as_sdp_enable is set, if not we return early.
+
+ crtc_state->infoframes.enable |= intel_hdmi_infoframe_enable(DP_SDP_ADAPTIVE_SYNC);
+ as_sdp->sdp_type = DP_SDP_ADAPTIVE_SYNC;
+ as_sdp->length = 0x9;
+ as_sdp->vtotal = adjusted_mode->vtotal;
Here the as_sdp->operation_mode should be set which is computed in
vrr_compute_config, as mentioned above.
Other fields will depend on mode that is selected.
Regards,
Ankit
+}
+
static void intel_dp_compute_vsc_sdp(struct intel_dp *intel_dp,
struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state)
@@ -2942,6 +2961,7 @@ intel_dp_compute_config(struct intel_encoder *encoder,
g4x_dp_set_clock(encoder, pipe_config);
intel_vrr_compute_config(pipe_config, conn_state);
+ intel_dp_compute_as_sdp(intel_dp, pipe_config, conn_state);
intel_psr_compute_config(intel_dp, pipe_config, conn_state);
intel_dp_drrs_compute_config(connector, pipe_config, link_bpp_x16);
intel_dp_compute_vsc_sdp(intel_dp, pipe_config, conn_state);
