On 2020-05-28 9:54 a.m., Alexander Monakov wrote:
>
>
> On Thu, 28 May 2020, Harry Wentland wrote:
>
>> This reverts commit 96cb7cf13d8530099c256c053648ad576588c387.
>>
>> This change was used for DCN2 bringup and is no longer desired.
>> In fact it breaks backlight on DCN2 systems.
>
> Reported-and-tested-by: Alexander Monakov <amonakov@xxxxxxxxx>
>
Thanks, Alex.
Just to confirm, this fixes the backlight issue you were seeing?
Harry
> Thanks.
>
>> Cc: Alexander Monakov <amonakov@xxxxxxxxx>
>> Cc: Hersen Wu <hersenxs.wu@xxxxxxx>
>> Cc: Anthony Koo <Anthony.Koo@xxxxxxx>
>> Cc: Michael Chiu <Michael.Chiu@xxxxxxx>
>> Signed-off-by: Harry Wentland <harry.wentland@xxxxxxx>
>> ---
>> drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 11 ++++-------
>> 1 file changed, 4 insertions(+), 7 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 ddc979e3eebe..acd4874e0743 100644
>> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> @@ -1356,7 +1356,7 @@ static int dm_late_init(void *handle)
>> unsigned int linear_lut[16];
>> int i;
>> struct dmcu *dmcu = NULL;
>> - bool ret = false;
>> + bool ret;
>>
>> if (!adev->dm.fw_dmcu)
>> return detect_mst_link_for_all_connectors(adev->ddev);
>> @@ -1377,13 +1377,10 @@ static int dm_late_init(void *handle)
>> */
>> params.min_abm_backlight = 0x28F;
>>
>> - /* todo will enable for navi10 */
>> - if (adev->asic_type <= CHIP_RAVEN) {
>> - ret = dmcu_load_iram(dmcu, params);
>> + ret = dmcu_load_iram(dmcu, params);
>>
>> - if (!ret)
>> - return -EINVAL;
>> - }
>> + if (!ret)
>> + return -EINVAL;
>>
>> return detect_mst_link_for_all_connectors(adev->ddev);
>> }
>>
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