From 3ba2a0bfd8cf94eb225e1c60dff16e5c35bde1da Mon Sep 17 00:00:00 2001 From: Ilya Bakoulin Date: Wed, 3 Jan 2024 09:42:04 -0500 Subject: [PATCH] drm/amd/display: Clear OPTC mem select on disable [Why] Not clearing the memory select bits prior to OPTC disable can cause DSC corruption issues when attempting to reuse a memory instance for another OPTC that enables ODM. [How] Clear the memory select bits prior to disabling an OPTC. Cc: Mario Limonciello Cc: Alex Deucher Cc: stable@vger.kernel.org Reviewed-by: Charlene Liu Acked-by: Alex Hung Signed-off-by: Ilya Bakoulin Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/optc/dcn32/dcn32_optc.c | 3 +++ drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.c | 3 +++ 2 files changed, 6 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/optc/dcn32/dcn32_optc.c b/drivers/gpu/drm/amd/display/dc/optc/dcn32/dcn32_optc.c index 1788eb29474b..823493543325 100644 --- a/drivers/gpu/drm/amd/display/dc/optc/dcn32/dcn32_optc.c +++ b/drivers/gpu/drm/amd/display/dc/optc/dcn32/dcn32_optc.c @@ -173,6 +173,9 @@ static bool optc32_disable_crtc(struct timing_generator *optc) OPTC_SEG3_SRC_SEL, 0xf, OPTC_NUM_OF_INPUT_SEGMENT, 0); + REG_UPDATE(OPTC_MEMORY_CONFIG, + OPTC_MEM_SEL, 0); + /* disable otg request until end of the first line * in the vertical blank region */ diff --git a/drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.c b/drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.c index 3d6c1b2c2b4d..5b1547508850 100644 --- a/drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.c +++ b/drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.c @@ -145,6 +145,9 @@ static bool optc35_disable_crtc(struct timing_generator *optc) OPTC_SEG3_SRC_SEL, 0xf, OPTC_NUM_OF_INPUT_SEGMENT, 0); + REG_UPDATE(OPTC_MEMORY_CONFIG, + OPTC_MEM_SEL, 0); + /* disable otg request until end of the first line * in the vertical blank region */