[PATCH 3/4] drm/i915/panelreplay: Initializaton and compute config for panel replay
Animesh Manna
animesh.manna at intel.com
Fri Nov 4 09:52:36 UTC 2022
As panel replay feature similar to PSR feature of EDP panel, so currently
utilized existing psr framework for panel replay.
Signed-off-by: Animesh Manna <animesh.manna at intel.com>
---
.../drm/i915/display/intel_display_types.h | 15 +++++++
drivers/gpu/drm/i915/display/intel_dp.c | 44 +++++++++++++++----
drivers/gpu/drm/i915/display/intel_psr.c | 44 ++++++++++++++++++-
drivers/gpu/drm/i915/display/intel_psr.h | 1 +
4 files changed, 93 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index c6abaaa46e17..dd5ee2544ffb 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1614,6 +1614,8 @@ struct intel_psr {
bool irq_aux_error;
u16 su_w_granularity;
u16 su_y_granularity;
+ bool source_panel_replay_support;
+ bool sink_panel_replay_support;
u32 dc3co_exitline;
u32 dc3co_exit_delay;
struct delayed_work dc3co_work;
@@ -1917,6 +1919,11 @@ dp_to_lspcon(struct intel_dp *intel_dp)
#define CAN_PSR(intel_dp) ((intel_dp)->psr.sink_support && \
(intel_dp)->psr.source_support)
+#define CAN_PANEL_REPLAY(intel_dp) ((intel_dp)->psr.sink_panel_replay_support && \
+ (intel_dp)->psr.source_panel_replay_support)
+
+#define IS_PANEL_REPLAY(intel_dp) (!intel_dp_is_edp(intel_dp))
+
static inline bool intel_encoder_can_psr(struct intel_encoder *encoder)
{
if (!intel_encoder_is_dp(encoder))
@@ -1925,6 +1932,14 @@ static inline bool intel_encoder_can_psr(struct intel_encoder *encoder)
return CAN_PSR(enc_to_intel_dp(encoder));
}
+static inline bool intel_encoder_can_panel_replay(struct intel_encoder *encoder)
+{
+ if (!intel_encoder_is_dp(encoder))
+ return false;
+
+ return CAN_PANEL_REPLAY(enc_to_intel_dp(encoder));
+}
+
static inline struct intel_digital_port *
hdmi_to_dig_port(struct intel_hdmi *intel_hdmi)
{
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 7400d6b4c587..25bf18e40b96 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1726,12 +1726,23 @@ static void intel_dp_compute_vsc_colorimetry(const struct intel_crtc_state *crtc
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- /*
- * Prepare VSC Header for SU as per DP 1.4 spec, Table 2-118
- * VSC SDP supporting 3D stereo, PSR2, and Pixel Encoding/
- * Colorimetry Format indication.
- */
- vsc->revision = 0x5;
+ if (crtc_state->has_psr && conn_state->connector->connector_type !=
+ DRM_MODE_CONNECTOR_eDP) {
+ /*
+ * Prepare VSC Header for SU as per DP 2.0 spec, Table 2-223
+ * VSC SDP supporting 3D stereo, Panel Replay, and Pixel
+ * Encoding/Colorimetry Format indication.
+ */
+ vsc->revision = 0x7;
+ } else {
+ /*
+ * Prepare VSC Header for SU as per DP 1.4 spec, Table 2-118
+ * VSC SDP supporting 3D stereo, PSR2, and Pixel Encoding/
+ * Colorimetry Format indication.
+ */
+ vsc->revision = 0x5;
+ }
+
vsc->length = 0x13;
/* DP 1.4a spec, Table 2-120 */
@@ -1840,6 +1851,21 @@ void intel_dp_compute_psr_vsc_sdp(struct intel_dp *intel_dp,
vsc->revision = 0x4;
vsc->length = 0xe;
}
+ } else if (intel_dp->psr.enabled && IS_PANEL_REPLAY(intel_dp)) {
+ if (intel_dp->psr.colorimetry_support &&
+ intel_dp_needs_vsc_sdp(crtc_state, conn_state)) {
+ /* [Panel Replay with colorimetry info] */
+ intel_dp_compute_vsc_colorimetry(crtc_state, conn_state,
+ vsc);
+ } else {
+ /*
+ * [Panel Replay without colorimetry info]
+ * Prepare VSC Header for SU as per DP 2.0 spec, Table 2-223
+ * VSC SDP supporting 3D stereo + Panel Replay.
+ */
+ vsc->revision = 0x6;
+ vsc->length = 0x10;
+ }
} else {
/*
* [PSR1]
@@ -3077,10 +3103,10 @@ static ssize_t intel_dp_vsc_sdp_pack(const struct drm_dp_vsc_sdp *vsc,
sdp->sdp_header.HB3 = vsc->length; /* Number of Valid Data Bytes */
/*
- * Only revision 0x5 supports Pixel Encoding/Colorimetry Format as
- * per DP 1.4a spec.
+ * Revision 0x5 and 0x7 supports Pixel Encoding/Colorimetry Format as
+ * per DP 1.4a spec and DP 2.0 spec respectively.
*/
- if (vsc->revision != 0x5)
+ if (vsc->revision != 0x5 || vsc->revision != 0x7)
goto out;
/* VSC SDP Payload for DB16 through DB18 */
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index a75b37851504..50394143c798 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -983,6 +983,8 @@ void intel_psr_compute_config(struct intel_dp *intel_dp,
&crtc_state->hw.adjusted_mode;
int psr_setup_time;
+ if (CAN_PANEL_REPLAY(intel_dp))
+ goto skip_psr_check;
/*
* Current PSR panels don't work reliably with VRR enabled
* So if VRR is enabled, do not enable PSR.
@@ -1026,8 +1028,14 @@ void intel_psr_compute_config(struct intel_dp *intel_dp,
return;
}
+skip_psr_check:
crtc_state->has_psr = true;
- crtc_state->has_psr2 = intel_psr2_config_valid(intel_dp, crtc_state);
+
+ if (intel_dp_is_edp(intel_dp))
+ crtc_state->has_psr2 = intel_psr2_config_valid(intel_dp, crtc_state);
+
+ if (IS_PANEL_REPLAY(intel_dp) && HAS_PSR2_SEL_FETCH(dev_priv))
+ crtc_state->has_psr2 = intel_psr2_sel_fetch_config_valid(intel_dp, crtc_state);
crtc_state->infoframes.enable |= intel_hdmi_infoframe_enable(DP_SDP_VSC);
intel_dp_compute_psr_vsc_sdp(intel_dp, crtc_state, conn_state,
@@ -2390,6 +2398,35 @@ void intel_psr_flush(struct drm_i915_private *dev_priv,
}
}
+/**
+ * intel_panel_replay_init - Check for sink and source capability.
+ * @intel_dp: Intel DP
+ *
+ * This function is called after the initializing connector.
+ * (the initializing of connector treats the handling of connector capabilities)
+ * And it initializes basic panel replay stuff for each DP Encoder.
+ */
+void intel_panel_replay_init(struct intel_dp *intel_dp)
+{
+ struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+ u8 pr_dpcd = 0;
+
+ if (!(HAS_DP20(dev_priv) && HAS_PANEL_REPLAY(dev_priv)))
+ return;
+
+ drm_dp_dpcd_readb(&intel_dp->aux, DP_PANEL_REPLAY_CAP, &pr_dpcd);
+
+ if (!(pr_dpcd & DP_PANEL_REPLAY_SUPPORT)) {
+ drm_dbg_kms(&dev_priv->drm,
+ "Panel replay is not supported by panel\n");
+ return;
+ }
+
+ drm_dbg_kms(&dev_priv->drm,
+ "Panel replay is supported by panel\n");
+ intel_dp->psr.sink_panel_replay_support = true;
+}
+
/**
* intel_psr_init - Init basic PSR work and mutex.
* @intel_dp: Intel DP
@@ -2404,7 +2441,7 @@ void intel_psr_init(struct intel_dp *intel_dp)
struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
- if (!HAS_PSR(dev_priv))
+ if (!(HAS_PSR(dev_priv) || HAS_PANEL_REPLAY(dev_priv)))
return;
/*
@@ -2423,6 +2460,7 @@ void intel_psr_init(struct intel_dp *intel_dp)
}
intel_dp->psr.source_support = true;
+ intel_dp->psr.source_panel_replay_support = true;
/* Set link_standby x link_off defaults */
if (DISPLAY_VER(dev_priv) < 12)
@@ -2432,6 +2470,8 @@ void intel_psr_init(struct intel_dp *intel_dp)
INIT_WORK(&intel_dp->psr.work, intel_psr_work);
INIT_DELAYED_WORK(&intel_dp->psr.dc3co_work, tgl_dc3co_disable_work);
mutex_init(&intel_dp->psr.lock);
+
+ intel_panel_replay_init(intel_dp);
}
static int psr_get_status_and_error_status(struct intel_dp *intel_dp,
diff --git a/drivers/gpu/drm/i915/display/intel_psr.h b/drivers/gpu/drm/i915/display/intel_psr.h
index 2ac3a46cccc5..38e613990418 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.h
+++ b/drivers/gpu/drm/i915/display/intel_psr.h
@@ -34,6 +34,7 @@ void intel_psr_flush(struct drm_i915_private *dev_priv,
unsigned frontbuffer_bits,
enum fb_op_origin origin);
void intel_psr_init(struct intel_dp *intel_dp);
+void intel_panel_replay_init(struct intel_dp *intel_dp);
void intel_psr_compute_config(struct intel_dp *intel_dp,
struct intel_crtc_state *crtc_state,
struct drm_connector_state *conn_state);
--
2.29.0
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