From: Jun Lei <jun.lei@amd.com>
Date: Wed, 16 Dec 2020 17:56:38 +0000 (-0500)
Subject: drm/amd/display: Increase precision for bpp in DSC calculations
X-Git-Tag: v5.13-rc1~123^2~12^2~32
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=86ca3cbe5c9ca8e7d47424c98fc7b49b34b67d96;p=thirdparty%2Flinux.git

drm/amd/display: Increase precision for bpp in DSC calculations

[Why?]
Many DSC variables and related functions use whole bits for bpp.

[How?]
Change variables and related functions to use 16ths of a bit for bpp.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Jun Lei <jun.lei@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/dc/dc_hw_types.h b/drivers/gpu/drm/amd/display/dc/dc_hw_types.h
index 48d3ed97ead9b..bcec019efa6f0 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_hw_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_hw_types.h
@@ -770,6 +770,7 @@ struct dc_crtc_timing {
 #endif
 
 	struct dc_crtc_timing_flags flags;
+	uint32_t dsc_fixed_bits_per_pixel_x16; /* DSC target bitrate in 1/16 of bpp (e.g. 128 -> 8bpp) */
 	struct dc_dsc_config dsc_cfg;
 };