From: hersen wu <hersenxs...@amd.com>
[WHY] dcn20 enable usb-c dp ALT mode in dmcu. There is bug
when enable abm feature which cause system crash. dal team
will debug this bug later.
[HOW] disable dcn abm feature for dcn20.
Signed-off-by: hersen wu <hersenxs...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 27c57267e295..d20250b181b7 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -781,7 +781,7 @@ static int dm_late_init(void *handle)
unsigned int linear_lut[16];
int i;
struct dmcu *dmcu = adev->dm.dc->res_pool->dmcu;
- bool ret;
+ bool ret = false;
for (i = 0; i < 16; i++)
linear_lut[i] = 0xFFFF * i / 15;
@@ -792,10 +792,13 @@ static int dm_late_init(void *handle)
params.backlight_lut_array_size = 16;
params.backlight_lut_array = linear_lut;
- ret = dmcu_load_iram(dmcu, params);
+ /* todo will enable for navi10 */
+ if (adev->asic_type <= CHIP_RAVEN) {
+ ret = dmcu_load_iram(dmcu, params);
- if (!ret)
- return -EINVAL;
+ if (!ret)
+ return -EINVAL;
+ }
return detect_mst_link_for_all_connectors(adev->ddev);
}
--
2.20.1
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