diff options
author | Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> | 2020-02-03 09:18:45 -0500 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2020-02-11 11:51:01 -0500 |
commit | 9a14e81649382c7eb80e7165222c31751225cd81 (patch) | |
tree | 84d59c8aa02fb2488e50f326f1a81f96d7cc8a01 /drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c | |
parent | 115c7e7f0501716c05d2df5b1b9e06df9241a48c (diff) |
drm/amd/display: Use fb_base/fb_offset if available for translation
[Why]
In the case where we do have these passed in then we should be using
these instead of the registers - those are only programmed when booting
the adapter as primary.
[How]
Check if fb_base/fb_offset are non-zero. The value of 0 is invalid
for fb_base but is valid for fb_offset on dGPU.
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c index 479f17bb3800..993e47e99fbe 100644 --- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c +++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c @@ -60,6 +60,12 @@ static void dmub_dcn20_get_fb_base_offset(struct dmub_srv *dmub, { uint32_t tmp; + if (dmub->fb_base || dmub->fb_offset) { + *fb_base = dmub->fb_base; + *fb_offset = dmub->fb_offset; + return; + } + REG_GET(DCN_VM_FB_LOCATION_BASE, FB_BASE, &tmp); *fb_base = (uint64_t)tmp << 24; |