diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 21 |
1 files changed, 21 insertions, 0 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 cc293dbf3c72..1701225edc50 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -71,6 +71,7 @@ #endif #include "modules/inc/mod_freesync.h" +#include "modules/power/power_helpers.h" #define FIRMWARE_RAVEN_DMCU "amdgpu/raven_dmcu.bin" MODULE_FIRMWARE(FIRMWARE_RAVEN_DMCU); @@ -642,6 +643,26 @@ static int dm_late_init(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle; + struct dmcu_iram_parameters params; + unsigned int linear_lut[16]; + int i; + struct dmcu *dmcu = adev->dm.dc->res_pool->dmcu; + bool ret; + + for (i = 0; i < 16; i++) + linear_lut[i] = 0xFFFF * i / 15; + + params.set = 0; + params.backlight_ramping_start = 0xCCCC; + params.backlight_ramping_reduction = 0xCCCCCCCC; + params.backlight_lut_array_size = 16; + params.backlight_lut_array = linear_lut; + + ret = dmcu_load_iram(dmcu, params); + + if (!ret) + return -EINVAL; + return detect_mst_link_for_all_connectors(adev->ddev); } |