diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.19.8/1204-drm-amd-display-dmcu-is-blocking-due-to-wrong-disabl.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.19.8/1204-drm-amd-display-dmcu-is-blocking-due-to-wrong-disabl.patch | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/1204-drm-amd-display-dmcu-is-blocking-due-to-wrong-disabl.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/1204-drm-amd-display-dmcu-is-blocking-due-to-wrong-disabl.patch new file mode 100644 index 00000000..865bcada --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/1204-drm-amd-display-dmcu-is-blocking-due-to-wrong-disabl.patch @@ -0,0 +1,45 @@ +From b7678a39192a22b3c0a555af7c2c2adbfb1b2693 Mon Sep 17 00:00:00 2001 +From: Paul Hsieh <Paul.Hsieh@amd.com> +Date: Thu, 17 Jan 2019 18:56:14 +0800 +Subject: [PATCH 1204/2940] drm/amd/display: dmcu is blocking due to wrong + disable ABM command + +[Why] +Second screen to clone/extend mode, driver will send ABM pipe +command to DMCU. Change mode from clone/extend to second +screen only, driver send ABM level command to disable ABM but +this command will not clear ABM pipe data. At this time, change +second screen to PC screen only, driver will send first command +"ABM_LEVEL", it will turn on ABM with incorrect ABM pile so that +DMCU is blocking. + +[How] +When driver try to disable ABM, change command from "ABM LEVEL" +to "ABM PIPE" so that it will clear ABM pile data. + +Change-Id: Ib845fdde7a702b9f97f51367efe71e4b57e965fb +Signed-off-by: Paul Hsieh <Paul.Hsieh@amd.com> +Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> +Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> +--- + drivers/gpu/drm/amd/display/dc/dce/dce_abm.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c b/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c +index 2a342eae80fd..01e56f1a9f34 100644 +--- a/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c ++++ b/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c +@@ -314,8 +314,8 @@ static bool dce_abm_immediate_disable(struct abm *abm) + + /* setDMCUParam_ABMLevel */ + REG_UPDATE_2(MASTER_COMM_CMD_REG, +- MASTER_COMM_CMD_REG_BYTE0, MCP_ABM_LEVEL_SET, +- MASTER_COMM_CMD_REG_BYTE2, MCP_DISABLE_ABM_IMMEDIATELY); ++ MASTER_COMM_CMD_REG_BYTE0, MCP_ABM_PIPE_SET, ++ MASTER_COMM_CMD_REG_BYTE1, MCP_DISABLE_ABM_IMMEDIATELY); + + /* notifyDMCUMsg */ + REG_UPDATE(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 1); +-- +2.17.1 + |