From: Swati Sharma <[email protected]> If force_dsc_fractional_bpp_en is set through debugfs allow DSC iff compressed bpp is fractional. Continue if we computed compressed bpp is computed as integer.
Signed-off-by: Swati Sharma <[email protected]> --- drivers/gpu/drm/i915/display/intel_dp.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index be94580e4514..4d69b2d77095 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1594,6 +1594,9 @@ static int dsc_compute_compressed_bpp(struct intel_dp *intel_dp, for (compressed_bppx16 = dsc_max_bppx16; compressed_bppx16 >= dsc_min_bppx16; compressed_bppx16 -= bppx16_step) { + if (intel_dp->force_dsc_fractional_bpp_en && + (compressed_bppx16 % 16 == 0)) + continue; ret = dsc_compute_link_config(intel_dp, pipe_config, limits, @@ -1712,6 +1715,9 @@ static int intel_dp_dsc_compute_config(struct intel_dp *intel_dp, } else { u8 dsc_dp_slice_count; + if (intel_dp->force_dsc_fractional_bpp_en) + drm_dbg_kms(&dev_priv->drm, + "Forcing DSC fractional bpp\n"); if (intel_dp->force_dsc_bpc && intel_dp->force_dsc_bpc <= conn_state->max_requested_bpc) ret = dsc_compute_compressed_bpp(intel_dp, pipe_config, -- 2.25.1
