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 bits_per_component [Mitul/Chaitanya/Srikanth] -Add reference to this restriction [Chaitanya] Signed-off-by: Suraj Kandpal <[email protected]> --- 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..7a30fdea16da 100644 --- a/drivers/gpu/drm/i915/display/intel_vdsc.c +++ b/drivers/gpu/drm/i915/display/intel_vdsc.c @@ -306,6 +306,11 @@ 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\n"); + return -EINVAL; + } + drm_dsc_set_rc_buf_thresh(vdsc_cfg); /* -- 2.43.2
