diff mbox series

drm/i915/vdsc: Add bpc check in intel_dsc_compute_params

Message ID 20240926081327.1409518-2-suraj.kandpal@intel.com (mailing list archive)
State New, archived
Headers show
Series drm/i915/vdsc: Add bpc check in intel_dsc_compute_params | expand

Commit Message

Kandpal, Suraj Sept. 26, 2024, 8:13 a.m. UTC 
DSC does not support bpc under 8 according to DSC 1.2a Section 2
Requirements. Return an error if that happens to be the case.

--v2
-should be bit_per_component [Mitul/Chaitanya]
-Add reference to this restriction [Chaitanya]

--v3
-Add the bpc in which we see this warning [Jani]

Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
---
 drivers/gpu/drm/i915/display/intel_vdsc.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c b/drivers/gpu/drm/i915/display/intel_vdsc.c
index 8158e3702ed5..208f117ece57 100644
--- a/drivers/gpu/drm/i915/display/intel_vdsc.c
+++ b/drivers/gpu/drm/i915/display/intel_vdsc.c
@@ -306,6 +306,12 @@  int intel_dsc_compute_params(struct intel_crtc_state *pipe_config)
 
 	vdsc_cfg->bits_per_component = pipe_config->pipe_bpp / 3;
 
+	if (vdsc_cfg->bits_per_component < 8) {
+		drm_dbg_kms(&dev_priv->drm, "DSC bpc requirements not met bpc: %d\n",
+			    vdsc_cfg->bits_per_component);
+		return -EINVAL;
+	}
+
 	drm_dsc_set_rc_buf_thresh(vdsc_cfg);
 
 	/*