DSC does not support bpc under 8. Return an error if that
happens to be the case.
Signed-off-by: Suraj Kandpal <suraj.kandpal@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_vdsc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c b/drivers/gpu/drm/i915/display/intel_vdsc.c
index 8158e3702ed5..39bf8bee106c 100644
--- a/drivers/gpu/drm/i915/display/intel_vdsc.c
+++ b/drivers/gpu/drm/i915/display/intel_vdsc.c
@@ -297,6 +297,11 @@ int intel_dsc_compute_params(struct intel_crtc_state *pipe_config)
vdsc_cfg->bits_per_pixel = pipe_config->dsc.compressed_bpp_x16;
+ if (vdsc_cfg->bites_per_pixel < 8) {
+ drm_dbg_kms(&dev_priv->drm, "DSC bpc requirements not met\n");
+ return -EINVAL;
+ }
+
/*
* According to DSC 1.2 specs in Section 4.1 if native_420 is set
* we need to double the current bpp.
--
2.43.2
