As per the display enable sequence, we need to follow the enable sequence
for slaves first with DP_TP_CTL set to Idle and configure the transcoder
port sync register to select the corersponding master, then follow the
enable sequence for master leaving DP_TP_CTL to idle.
At this point the transcoder port sync mode is configured and enabled
and the Vblanks of both ports are synchronized so then set DP_TP_CTL
for the slave and master to Normal and do post crtc enable updates.
Cc: Daniel Vetter <daniel.vet...@ffwll.ch>
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Cc: Matt Roper <matthew.d.ro...@intel.com>
Signed-off-by: Manasi Navare <manasi.d.nav...@intel.com>
---
drivers/gpu/drm/i915/intel_ddi.c | 3 +-
drivers/gpu/drm/i915/intel_display.c | 122 +++++++++++++++++++++++++++
2 files changed, 124 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 24f9106efcc6..0b326b2c274d 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -3120,7 +3120,8 @@ static void intel_ddi_pre_enable_dp(struct intel_encoder
*encoder,
true);
intel_dp_sink_set_fec_ready(intel_dp, crtc_state);
intel_dp_start_link_train(intel_dp);
- if (port != PORT_A || INTEL_GEN(dev_priv) >= 9)
+ if ((port != PORT_A || INTEL_GEN(dev_priv) >= 9) &&
+ INTEL_GEN(dev_priv) < 11)
intel_dp_stop_link_train(intel_dp);
intel_ddi_enable_fec(encoder, crtc_state);
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 4bd23e61c6fd..bd00549a9e00 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -13488,6 +13488,7 @@ static void skl_update_crtcs(struct drm_atomic_state
*state)
for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state,
new_crtc_state, i) {
bool vbl_wait = false;
unsigned int cmask = drm_crtc_mask(crtc);
+ bool modeset = needs_modeset(new_crtc_state);
intel_crtc = to_intel_crtc(crtc);
cstate = to_intel_crtc_state(new_crtc_state);
@@ -13496,6 +13497,12 @@ static void skl_update_crtcs(struct drm_atomic_state
*state)
if (updated & cmask || !cstate->base.active)
continue;
+ if (modeset && INTEL_GEN(dev_priv) >= 11) {
+ DRM_DEBUG_KMS("Pushing the Tiled CRTC %d %s
that needs update to separate loop\n",
+ intel_crtc->base.base.id,
intel_crtc->base.name);
+ continue;
+ }
+
if (skl_ddb_allocation_overlaps(&cstate->wm.skl.ddb,
entries,
INTEL_INFO(dev_priv)->num_pipes, i))
@@ -13526,6 +13533,121 @@ static void skl_update_crtcs(struct drm_atomic_state
*state)
}
} while (progress);
+ /* Separate loop for updating Slave CRTCs that need modeset.
+ * We need to loop through all slaves of tiled display first and
+ * follow enable sequence with DP_TP_CTL left Idle until the master
+ * is ready.
+ */
+ for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state,
new_crtc_state, i) {
+ bool modeset = needs_modeset(new_crtc_state);
+ struct intel_crtc_state *pipe_config =
to_intel_crtc_state(new_crtc_state);
+
+ intel_crtc = to_intel_crtc(crtc);
+
+ if (!pipe_config->base.active)
+ continue;
+ if (!modeset)
+ continue;
+ if (!pipe_config->master_crtc)
+ continue;
+
+ update_scanline_offset(pipe_config);
+ dev_priv->display.crtc_enable(pipe_config, state);
+ }
+ /* Now do the display enable sequence for master CRTC */
+ for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state,
new_crtc_state, i) {
+ bool modeset = needs_modeset(new_crtc_state);
+ struct intel_crtc_state *pipe_config =
to_intel_crtc_state(new_crtc_state);
+
+ intel_crtc = to_intel_crtc(crtc);
+
+ if (!pipe_config->base.active)
+ continue;
+ if (!modeset)
+ continue;
+ if (pipe_config->master_crtc)
+ continue;
+
+ update_scanline_offset(pipe_config);
+ dev_priv->display.crtc_enable(pipe_config, state);
+ }
+ for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state,
new_crtc_state, i) {
+ struct drm_connector_state *conn_state;
+ struct drm_connector *conn;
+ bool modeset = needs_modeset(new_crtc_state);
+ struct intel_dp *intel_dp;
+
+ intel_crtc = to_intel_crtc(crtc);
+ cstate = to_intel_crtc_state(new_crtc_state);
+
+ if (!cstate->base.active)
+ continue;
+ if (!modeset)
+ continue;
+ if (!cstate->master_crtc)
+ continue;
+
+ for_each_new_connector_in_state(state, conn, conn_state, i) {
+ if (conn_state->crtc == crtc)
+ break;
+ }
+ intel_dp = enc_to_intel_dp(&intel_attached_encoder(conn)->base);
+ intel_dp_stop_link_train(intel_dp);
+ }
+ for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state,
new_crtc_state, i) {
+ struct drm_connector_state *conn_state;
+ struct drm_connector *conn;
+ bool modeset = needs_modeset(new_crtc_state);
+ struct intel_dp *intel_dp;
+
+ intel_crtc = to_intel_crtc(crtc);
+ cstate = to_intel_crtc_state(new_crtc_state);
+
+ if (!cstate->base.active)
+ continue;
+ if (!modeset)
+ continue;
+ if (cstate->master_crtc)
+ continue;
+
+ /* Wait for 200us before setting the master DP_TP_TCL to Normal
*/
+ usleep_range(200, 400);
+ for_each_new_connector_in_state(state, conn, conn_state, i) {
+ if (conn_state->crtc == crtc)
+ break;
+ }
+ intel_dp = enc_to_intel_dp(&intel_attached_encoder(conn)->base);
+ intel_dp_stop_link_train(intel_dp);
+ }
+ /* Now do the post crtc enable for all master and slaves */
+ for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state,
new_crtc_state, i) {
+ bool modeset = needs_modeset(new_crtc_state);
+ struct intel_plane_state *new_plane_state;
+ struct intel_crtc_state *pipe_config =
to_intel_crtc_state(new_crtc_state);
+
+ intel_crtc = to_intel_crtc(crtc);
+
+ if (!pipe_config->base.active)
+ continue;
+ if (!modeset)
+ continue;
+
+ new_plane_state =
+
intel_atomic_get_new_plane_state(to_intel_atomic_state(state),
+
to_intel_plane(crtc->primary));
+ if (pipe_config->update_pipe && !pipe_config->enable_fbc)
+ intel_fbc_disable(intel_crtc);
+ else if (new_plane_state)
+ intel_fbc_enable(intel_crtc, pipe_config,
new_plane_state);
+
+ intel_begin_crtc_commit(to_intel_atomic_state(state),
intel_crtc);
+ if (INTEL_GEN(dev_priv) >= 9)
+ skl_update_planes_on_crtc(to_intel_atomic_state(state),
intel_crtc);
+ else
+
i9xx_update_planes_on_crtc(to_intel_atomic_state(state), intel_crtc);
+
+ intel_finish_crtc_commit(to_intel_atomic_state(state),
intel_crtc);
+ }
/* If 2nd DBuf slice is no more required disable it */
if (INTEL_GEN(dev_priv) >= 11 && required_slices < hw_enabled_slices)
icl_dbuf_slices_update(dev_priv, required_slices);
--
2.19.1
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