From: "Sripada, Radhakrishna" <radhakrishna.srip...@intel.com>
Use the newly added "max bpc" connector property to limit pipe bpp.
V3: Use drm_connector_state to access the "max bpc" property
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.v...@intel.com>
Cc: Kishore Kadiyala <kishore.kadiy...@intel.com>
Cc: Manasi Navare <manasi.d.nav...@intel.com>
Cc: Stanislav Lisovskiy <stanislav.lisovs...@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.srip...@intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 30fdfd1a3037..8506cd1634fb 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -10784,6 +10784,28 @@ connected_sink_compute_bpp(struct intel_connector
*connector,
}
}
+static void
+connected_sink_max_bpp(struct drm_connector_state *conn_state,
+ struct intel_crtc_state *pipe_config)
+{
+ switch (conn_state->max_bpc) {
+ case 8:
+ case 9:
+ pipe_config->pipe_bpp = 8*3;
+ break;
+ case 10:
+ case 11:
+ pipe_config->pipe_bpp = 10*3;
+ break;
+ case 12:
+ pipe_config->pipe_bpp = 12*3;
+ break;
+ default:
+ break;
+ }
+ DRM_DEBUG_KMS("Limiting display bpp to %d\n", pipe_config->pipe_bpp);
+}
+
static int
compute_baseline_pipe_bpp(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
@@ -10812,6 +10834,9 @@ compute_baseline_pipe_bpp(struct intel_crtc *crtc,
if (connector_state->crtc != &crtc->base)
continue;
+ if (connector_state->max_bpc)
+ connected_sink_max_bpp(connector_state, pipe_config);
+
connected_sink_compute_bpp(to_intel_connector(connector),
pipe_config);
}
--
2.9.3
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