diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/4213-drm-amd-display-fix-LFC-tearing-at-top-of-screen.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/4213-drm-amd-display-fix-LFC-tearing-at-top-of-screen.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/4213-drm-amd-display-fix-LFC-tearing-at-top-of-screen.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/4213-drm-amd-display-fix-LFC-tearing-at-top-of-screen.patch new file mode 100644 index 00000000..522a6aaa --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/4213-drm-amd-display-fix-LFC-tearing-at-top-of-screen.patch @@ -0,0 +1,41 @@ +From e788d2f033853a30166a123440ba2e161138f60f Mon Sep 17 00:00:00 2001 +From: Anthony Koo <Anthony.Koo@amd.com> +Date: Fri, 6 Apr 2018 12:12:06 -0400 +Subject: [PATCH 4213/5725] drm/amd/display: fix LFC tearing at top of screen + +Tearing occurred because new VTOTAL MIN/MAX was being programmed +too early. +The flip can happen within the VUPDATE high region, and the new min/max +would take effect immediately. But this means that frame is not variable +anymore, and tearing would occur when the flip actually happens. + +The fixed insert duration should be programmed on the first VUPDATE +interrupt instead. + +Signed-off-by: Anthony Koo <Anthony.Koo@amd.com> +Reviewed-by: Aric Cyr <Aric.Cyr@amd.com> +Acked-by: Harry Wentland <harry.wentland@amd.com> +--- + drivers/gpu/drm/amd/display/modules/freesync/freesync.c | 6 ------ + 1 file changed, 6 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c +index abd5c93..daad60e 100644 +--- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c ++++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c +@@ -371,12 +371,6 @@ static void apply_below_the_range(struct core_freesync *core_freesync, + inserted_frame_duration_in_us; + in_out_vrr->btr.frames_to_insert = frames_to_insert; + in_out_vrr->btr.frame_counter = frames_to_insert; +- +- in_out_vrr->adjust.v_total_min = +- calc_v_total_from_duration(stream, in_out_vrr, +- in_out_vrr->btr.inserted_duration_in_us); +- in_out_vrr->adjust.v_total_max = +- in_out_vrr->adjust.v_total_min; + } + } + +-- +2.7.4 + |