diff options
| author | Swati Sharma <swati2.sharma@intel.com> | 2023-11-10 15:40:17 +0530 |
|---|---|---|
| committer | Ankit Nautiyal <ankit.k.nautiyal@intel.com> | 2023-11-14 15:26:46 +0530 |
| commit | 5bbdcc86a481d82433e0905a548335bd3683eadf (patch) | |
| tree | c1c8151ae716272b94716ca95eeea2417c3cf10b | |
| parent | 680c1e31a59b223d677a22b508017d26b71a636a (diff) | |
drm/i915/dsc: Allow DSC only with fractional bpp when forced from debugfs
If force_dsc_fractional_bpp_en is set through debugfs allow DSC iff
compressed bpp is fractional. Continue if the computed compressed bpp
turns out to be a integer.
v2:
-Use helpers for fractional, integral bits of bits_per_pixel. (Suraj)
-Fix comment (Suraj)
Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Sui Jingfeng <suijingfeng@loongson.cn>
Link: https://patchwork.freedesktop.org/patch/msgid/20231110101020.4067342-9-ankit.k.nautiyal@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 23686c3913e7..effb3da291e1 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1928,6 +1928,9 @@ xelpd_dsc_compute_link_config(struct intel_dp *intel_dp, for (compressed_bppx16 = dsc_max_bpp; compressed_bppx16 >= dsc_min_bpp; compressed_bppx16 -= bppx16_step) { + if (intel_dp->force_dsc_fractional_bpp_en && + !to_bpp_frac(compressed_bppx16)) + continue; ret = dsc_compute_link_config(intel_dp, pipe_config, limits, @@ -1935,6 +1938,10 @@ xelpd_dsc_compute_link_config(struct intel_dp *intel_dp, timeslots); if (ret == 0) { pipe_config->dsc.compressed_bpp_x16 = compressed_bppx16; + if (intel_dp->force_dsc_fractional_bpp_en && + to_bpp_frac(compressed_bppx16)) + drm_dbg_kms(&i915->drm, "Forcing DSC fractional bpp\n"); + return 0; } } |