diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3022-drm-amd-display-Set-one-4-2-0-related-PPS-field-as-r.patch')
-rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3022-drm-amd-display-Set-one-4-2-0-related-PPS-field-as-r.patch | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3022-drm-amd-display-Set-one-4-2-0-related-PPS-field-as-r.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3022-drm-amd-display-Set-one-4-2-0-related-PPS-field-as-r.patch new file mode 100644 index 00000000..221062a2 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3022-drm-amd-display-Set-one-4-2-0-related-PPS-field-as-r.patch @@ -0,0 +1,40 @@ +From 6162463ce6b40387effec15b11d4e6792d1e6e51 Mon Sep 17 00:00:00 2001 +From: Nikola Cornij <nikola.cornij@amd.com> +Date: Wed, 5 Jun 2019 14:29:47 -0400 +Subject: [PATCH 3022/4256] drm/amd/display: Set one 4:2:0-related PPS field as + recommended by DSC spec + +[why] +'second_line_offset_adj' was mistakenly left at zero, even though DSC spec +v1.2a recommends setting this field to 512 for 4:2:0. + +[how] +Set 'second_line_offset_adj' to 512 for 4:2:0 and leave at zero otherwise + +Signed-off-by: Nikola Cornij <nikola.cornij@amd.com> +Reviewed-by: Eric Bernstein <Eric.Bernstein@amd.com> +Acked-by: Leo Li <sunpeng.li@amd.com> +--- + drivers/gpu/drm/amd/display/dc/dsc/drm_dsc_dc.c | 6 ++++++ + 1 file changed, 6 insertions(+) + +diff --git a/drivers/gpu/drm/amd/display/dc/dsc/drm_dsc_dc.c b/drivers/gpu/drm/amd/display/dc/dsc/drm_dsc_dc.c +index 04c6295f296e..fd1fb1653479 100644 +--- a/drivers/gpu/drm/amd/display/dc/dsc/drm_dsc_dc.c ++++ b/drivers/gpu/drm/amd/display/dc/dsc/drm_dsc_dc.c +@@ -442,6 +442,12 @@ int drm_dsc_compute_rc_parameters(struct drm_dsc_config *vdsc_cfg) + vdsc_cfg->rc_bits = (hrd_delay * vdsc_cfg->bits_per_pixel) / 16; + vdsc_cfg->initial_dec_delay = hrd_delay - vdsc_cfg->initial_xmit_delay; + ++ /* As per DSC spec v1.2a recommendation: */ ++ if (vdsc_cfg->native_420) ++ vdsc_cfg->second_line_offset_adj = 512; ++ else ++ vdsc_cfg->second_line_offset_adj = 0; ++ + return 0; + } + EXPORT_SYMBOL(drm_dsc_compute_rc_parameters); +-- +2.17.1 + |