From: Vidya Srinivas <vidya.srini...@intel.com>
We need bigjoiner support with MST functionality
for MST monitor resolutions > 5K to work.
Adding support for the same.
v2: Addressed review comments from Jani.
Revert rejection of MST bigjoiner modes and add
functionality
v3: Fixed pipe_mismatch WARN for mst_master_transcoder
Credits-to: Manasi Navare <navareman...@chromium.org>
v4: Utilize intel_crtc_joined_pipe_mask() also for handling
bigjoiner slave pipes for MST case(Stan)
Signed-off-by: Vidya Srinivas <vidya.srini...@intel.com>
Reviewed-by: Manasi Navare <navareman...@chromium.org>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 6 ++-
drivers/gpu/drm/i915/display/intel_dp_mst.c | 57 +++++++++++++++------
2 files changed, 46 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c
b/drivers/gpu/drm/i915/display/intel_ddi.c
index edfd22bea9e7a..0f9b0123df39a 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3934,9 +3934,11 @@ static void intel_ddi_read_func_ctl(struct intel_encoder
*encoder,
pipe_config->lane_count =
((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT)
+ 1;
- if (DISPLAY_VER(dev_priv) >= 12)
- pipe_config->mst_master_transcoder =
+ if (DISPLAY_VER(dev_priv) >= 12) {
+ if (!intel_crtc_is_bigjoiner_slave(pipe_config))
+ pipe_config->mst_master_transcoder =
REG_FIELD_GET(TRANS_DDI_MST_TRANSPORT_SELECT_MASK, temp);
+ }
intel_cpu_transcoder_get_m1_n1(crtc, cpu_transcoder,
&pipe_config->dp_m_n);
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c
b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 53aec023ce92f..c8dc4c7bf53cf 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -525,6 +525,7 @@ static int intel_dp_mst_compute_config(struct intel_encoder
*encoder,
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_atomic_state *state =
to_intel_atomic_state(conn_state->state);
+ struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
struct intel_dp *intel_dp = &intel_mst->primary->dp;
const struct intel_connector *connector =
@@ -542,6 +543,10 @@ static int intel_dp_mst_compute_config(struct
intel_encoder *encoder,
if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
return -EINVAL;
+ if (intel_dp_need_bigjoiner(intel_dp, adjusted_mode->crtc_hdisplay,
+ adjusted_mode->crtc_clock))
+ pipe_config->bigjoiner_pipes = GENMASK(crtc->pipe + 1,
crtc->pipe);
+
pipe_config->sink_format = INTEL_OUTPUT_FORMAT_RGB;
pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
pipe_config->has_pch_encoder = false;
@@ -955,6 +960,8 @@ static void intel_mst_post_disable_dp(struct
intel_atomic_state *state,
drm_atomic_get_mst_payload_state(new_mst_state,
connector->port);
struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
bool last_mst_stream;
+ u8 pipe_mask = intel_crtc_joined_pipe_mask(old_crtc_state);
+ struct intel_crtc *crtc;
intel_dp->active_mst_links--;
last_mst_stream = intel_dp->active_mst_links == 0;
@@ -962,7 +969,12 @@ static void intel_mst_post_disable_dp(struct
intel_atomic_state *state,
DISPLAY_VER(dev_priv) >= 12 && last_mst_stream &&
!intel_dp_mst_is_master_trans(old_crtc_state));
- intel_crtc_vblank_off(old_crtc_state);
+ for_each_intel_crtc_in_pipe_mask(&dev_priv->drm, crtc, pipe_mask) {
+ const struct intel_crtc_state *_old_crtc_state =
+ intel_atomic_get_old_crtc_state(state, crtc);
+
+ intel_crtc_vblank_off(_old_crtc_state);
+ }
intel_disable_transcoder(old_crtc_state);
@@ -980,12 +992,17 @@ static void intel_mst_post_disable_dp(struct
intel_atomic_state *state,
intel_ddi_disable_transcoder_func(old_crtc_state);
- intel_dsc_disable(old_crtc_state);
+ for_each_intel_crtc_in_pipe_mask(&dev_priv->drm, crtc, pipe_mask) {
+ const struct intel_crtc_state *_old_crtc_state =
+ intel_atomic_get_old_crtc_state(state, crtc);
- if (DISPLAY_VER(dev_priv) >= 9)
- skl_scaler_disable(old_crtc_state);
- else
- ilk_pfit_disable(old_crtc_state);
+ intel_dsc_disable(_old_crtc_state);
+
+ if (DISPLAY_VER(dev_priv) >= 9)
+ skl_scaler_disable(_old_crtc_state);
+ else
+ ilk_pfit_disable(_old_crtc_state);
+ }
/*
* Power down mst path before disabling the port, otherwise we end
@@ -1131,6 +1148,8 @@ static void intel_mst_enable_dp(struct intel_atomic_state
*state,
drm_atomic_get_new_mst_topology_state(&state->base,
&intel_dp->mst_mgr);
enum transcoder trans = pipe_config->cpu_transcoder;
bool first_mst_stream = intel_dp->active_mst_links == 1;
+ u8 pipe_mask = intel_crtc_joined_pipe_mask(pipe_config);
+ struct intel_crtc *crtc;
drm_WARN_ON(&dev_priv->drm, pipe_config->has_pch_encoder);
@@ -1172,7 +1191,19 @@ static void intel_mst_enable_dp(struct
intel_atomic_state *state,
intel_enable_transcoder(pipe_config);
- intel_crtc_vblank_on(pipe_config);
+ for_each_intel_crtc_in_pipe_mask_reverse(&dev_priv->drm, crtc,
pipe_mask) {
+ const struct intel_crtc_state *new_crtc_state =
+ intel_atomic_get_new_crtc_state(state, crtc);
+
+ intel_dsc_enable(new_crtc_state);
+
+ if (DISPLAY_VER(dev_priv) >= 9)
+ skl_pfit_enable(new_crtc_state);
+ else
+ ilk_pfit_enable(new_crtc_state);
+
+ intel_crtc_vblank_on(new_crtc_state);
+ }
intel_hdcp_enable(state, encoder, pipe_config, conn_state);
}
@@ -1330,12 +1361,6 @@ intel_dp_mst_mode_valid_ctx(struct drm_connector
*connector,
* corresponding link capabilities of the sink) in case the
* stream is uncompressed for it by the last branch device.
*/
- if (mode_rate > max_rate || mode->clock > max_dotclk ||
- drm_dp_calc_pbn_mode(mode->clock, min_bpp << 4) > port->full_pbn) {
- *status = MODE_CLOCK_HIGH;
- return 0;
- }
-
if (mode->clock < 10000) {
*status = MODE_CLOCK_LOW;
return 0;
@@ -1349,8 +1374,10 @@ intel_dp_mst_mode_valid_ctx(struct drm_connector
*connector,
if (intel_dp_need_bigjoiner(intel_dp, mode->hdisplay, target_clock)) {
bigjoiner = true;
max_dotclk *= 2;
+ }
- /* TODO: add support for bigjoiner */
+ if (mode_rate > max_rate || mode->clock > max_dotclk ||
+ drm_dp_calc_pbn_mode(mode->clock, min_bpp << 4) > port->full_pbn) {
*status = MODE_CLOCK_HIGH;
return 0;
}
@@ -1397,7 +1424,7 @@ intel_dp_mst_mode_valid_ctx(struct drm_connector
*connector,
return 0;
}
- *status = intel_mode_valid_max_plane_size(dev_priv, mode, false);
+ *status = intel_mode_valid_max_plane_size(dev_priv, mode, bigjoiner);
return 0;
}
--
2.37.3
