diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4473-drm-amd-display-Renoir-chroma-viewport-WA-change-for.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4473-drm-amd-display-Renoir-chroma-viewport-WA-change-for.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4473-drm-amd-display-Renoir-chroma-viewport-WA-change-for.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4473-drm-amd-display-Renoir-chroma-viewport-WA-change-for.patch new file mode 100644 index 00000000..5e7d191a --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4473-drm-amd-display-Renoir-chroma-viewport-WA-change-for.patch @@ -0,0 +1,41 @@ +From 5ba99cdaa75b41227f78ad74625b07a686bc0279 Mon Sep 17 00:00:00 2001 +From: Joseph Gravenor <joseph.gravenor@amd.com> +Date: Thu, 17 Oct 2019 11:56:34 -0400 +Subject: [PATCH 4473/4736] drm/amd/display: Renoir chroma viewport WA change + formula + +[why] +we want to increase the pte row plus 1 line if chroma viewport +height is integer multiple of the pte row height + +[how] +instead of ceiling viewport height, we floor it. this allows +us to accommodate both cases: those where the chroma viewport +height is integer multiple of the pte row height and those where +it is not + +Signed-off-by: Joseph Gravenor <joseph.gravenor@amd.com> +Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> +Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> +--- + drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubp.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubp.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubp.c +index 1ddd6ae22155..d86b6b6211bc 100644 +--- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubp.c ++++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubp.c +@@ -204,8 +204,8 @@ void hubp21_set_viewport( + PTE_ROW_HEIGHT_LINEAR, &pte_row_height); + + pte_row_height = 1 << (pte_row_height + 3); +- pte_rows = (viewport_c->height + pte_row_height - 1) / pte_row_height; +- patched_viewport_height = pte_rows * pte_row_height + 3; ++ pte_rows = (viewport_c->height / pte_row_height) + 1; ++ patched_viewport_height = pte_rows * pte_row_height + 1; + } + + +-- +2.17.1 + |