In the transcoder port sync mode, the slave transcoders mask their vblanks
until master transcoder's vblank so while disabling them, make
sure slaves are disabled first and then the masters.
v5:
* Dont pass dev priv to get_slave_crtc (Ville)
v4:
* Obtain slave state from master (Maarten)
v3:
* Rebase
v2:
* Use the intel_old_crtc_state_disables() helper
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Cc: Matt Roper <matthew.d.ro...@intel.com>
Cc: Jani Nikula <jani.nik...@intel.com>
Signed-off-by: Manasi Navare <manasi.d.nav...@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
---
drivers/gpu/drm/i915/display/intel_display.c | 58 ++++++++++++++++++--
1 file changed, 52 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c
b/drivers/gpu/drm/i915/display/intel_display.c
index 15491e2ccf1e..b608ece63397 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -14110,6 +14110,37 @@ static void intel_old_crtc_state_disables(struct
intel_atomic_state *state,
new_crtc_state);
}
+static void intel_trans_port_sync_modeset_disables(struct intel_atomic_state
*state,
+ struct intel_crtc *crtc,
+ struct intel_crtc_state
*old_crtc_state,
+ struct intel_crtc_state
*new_crtc_state)
+{
+ struct intel_crtc *slave_crtc = intel_get_slave_crtc(new_crtc_state);
+ struct intel_crtc_state *new_slave_crtc_state =
+ intel_atomic_get_new_crtc_state(state, slave_crtc);
+ struct intel_crtc_state *old_slave_crtc_state =
+ intel_atomic_get_old_crtc_state(state, slave_crtc);
+
+ WARN_ON(!slave_crtc || !new_slave_crtc_state ||
+ !old_slave_crtc_state);
+
+ /* Disable Slave first */
+ intel_pre_plane_update(old_slave_crtc_state, new_slave_crtc_state);
+ if (old_slave_crtc_state->base.active)
+ intel_old_crtc_state_disables(state,
+ old_slave_crtc_state,
+ new_slave_crtc_state,
+ slave_crtc);
+
+ /* Disable Master */
+ intel_pre_plane_update(old_crtc_state, new_crtc_state);
+ if (old_crtc_state->base.active)
+ intel_old_crtc_state_disables(state,
+ old_crtc_state,
+ new_crtc_state,
+ crtc);
+}
+
static void intel_commit_modeset_disables(struct intel_atomic_state *state)
{
struct intel_crtc_state *new_crtc_state, *old_crtc_state;
@@ -14128,13 +14159,28 @@ static void intel_commit_modeset_disables(struct
intel_atomic_state *state)
if (!needs_modeset(new_crtc_state))
continue;
- intel_pre_plane_update(old_crtc_state, new_crtc_state);
+ /* In case of Transcoder port Sync master slave CRTCs can be
+ * assigned in any order and we need to make sure that
+ * slave CRTCs are disabled first and then master CRTC since
+ * Slave vblanks are masked till Master Vblanks.
+ */
+ if (is_trans_port_sync_mode(new_crtc_state)) {
+ if (is_trans_port_sync_master(new_crtc_state))
+ intel_trans_port_sync_modeset_disables(state,
+ crtc,
+
old_crtc_state,
+
new_crtc_state);
+ else
+ continue;
+ } else {
+ intel_pre_plane_update(old_crtc_state, new_crtc_state);
- if (old_crtc_state->base.active)
- intel_old_crtc_state_disables(state,
- old_crtc_state,
- new_crtc_state,
- crtc);
+ if (old_crtc_state->base.active)
+ intel_old_crtc_state_disables(state,
+ old_crtc_state,
+ new_crtc_state,
+ crtc);
+ }
}
}
--
2.19.1
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