drm/amd/display: Remove additional FEC link bandwidth reduction (87029eb4) · Commits · 戴 / test

[why] This is now done in the original link bandwidth calculation and DSC must not do this anymore. [how] Remove the line of code that should have been removed when transition to correctly applying FEC overhead was made. Signed-off-by:

Nikola Cornij <nikola.cornij@amd.com> Reviewed-by:

Wenjing Liu <Wenjing.Liu@amd.com> Acked-by:

Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by:

Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c

+2 −3

Original line number	Diff line number	Diff line
		@@ -311,19 +311,18 @@ static void get_dsc_bandwidth_range(
		*
		* Returns:
		* - 'true' if DSC was required by policy and was successfully applied
		* - 'false' if DSC was not necessary (e.g. if uncompressed stream fits 'target_bandwidth'),
		* - 'false' if DSC was not necessary (e.g. if uncompressed stream fits 'target_bandwidth_kbps'),
		* or if it couldn't be applied based on DSC policy.
		*/
		static bool decide_dsc_target_bpp_x16(
		const struct dc_dsc_policy *policy,
		const struct dsc_enc_caps *dsc_common_caps,
		const int target_bandwidth,
		const int target_bandwidth_kbps,
		const struct dc_crtc_timing *timing,
		int *target_bpp_x16)
		{
		bool should_use_dsc = false;
		struct dc_dsc_bw_range range;
		float target_bandwidth_kbps = target_bandwidth * 0.97f; // 3% overhead for FEC

		memset(&range, 0, sizeof(range));

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