linux/drivers/gpu
Mario Limonciello bb7e50b476 drm/amd/display: Look at firmware version to determine using dmub on dcn21
commit 91adec9e07 upstream.

commit 652de07add ("drm/amd/display: Fully switch to dmub for all dcn21
asics") switched over to using dmub on Renoir to fix Gitlab 1735, but this
implied a new dependency on newer firmware which might not be met on older
kernel versions.

Since sw_init runs before hw_init, there is an opportunity to determine
whether or not the firmware version is new to adjust the behavior.

Cc: Roman.Li@amd.com
BugLink: https://gitlab.freedesktop.org/drm/amd/-/issues/1772
BugLink: https://gitlab.freedesktop.org/drm/amd/-/issues/1735
Fixes: 652de07add ("drm/amd/display: Fully switch to dmub for all dcn21 asics")
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Roman Li <Roman.Li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-18 19:17:20 +01:00
..
drm drm/amd/display: Look at firmware version to determine using dmub on dcn21 2021-11-18 19:17:20 +01:00
host1x gpu: host1x: Plug potential memory leak 2021-09-16 18:06:52 +02:00
ipu-v3 Updates to the interrupt core and driver subsystems: 2021-08-30 14:38:37 -07:00
trace
vga
Makefile