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)
[v5: vsyrjala: chunked the modeset squence stuff out,
removed bogus mst master transcoder hack,
keep mgr_lock near the full_pbn check]
Signed-off-by: Vidya Srinivas <vidya.srini...@intel.com>
Reviewed-by: Manasi Navare <navareman...@chromium.org>
Co-developed-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
drivers/gpu/drm/i915/display/intel_dp_mst.c | 25 ++++++++++++---------
1 file changed, 14 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c
b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 2d601d214915..c1530c01f541 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;
struct intel_connector *connector =
@@ -542,6 +543,11 @@ 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, connector,
+ 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;
@@ -1341,10 +1347,6 @@ intel_dp_mst_mode_valid_ctx(struct drm_connector
*connector,
max_link_clock, max_lanes);
mode_rate = intel_dp_link_required(mode->clock, min_bpp);
- ret = drm_modeset_lock(&mgr->base.lock, ctx);
- if (ret)
- return ret;
-
/*
* TODO:
* - Also check if compression would allow for the mode
@@ -1357,17 +1359,18 @@ 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 (intel_dp_need_bigjoiner(intel_dp, intel_connector,
mode->hdisplay, target_clock)) {
bigjoiner = true;
max_dotclk *= 2;
+ }
- /* TODO: add support for bigjoiner */
+ ret = drm_modeset_lock(&mgr->base.lock, ctx);
+ if (ret)
+ return ret;
+
+ 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;
}
@@ -1410,7 +1413,7 @@ 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;
}
--
2.43.2
