diff options
| author | Timur Kristóf <timur.kristof@gmail.com> | 2026-04-28 13:40:43 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-04-29 10:41:34 -0400 |
| commit | 60af4605ef35ecb7ad649a8534b83a2f7c69576d (patch) | |
| tree | fcd0b29875b1c5dece285520f7c3edff34220fb4 /drivers/gpu | |
| parent | 880498a1943f865529819f778df3b9945ca57262 (diff) | |
drm/amd/display: Allow constructing DCE8 link encoder without DDC
When the DDC channel ID is set to CHANNEL_ID_UNKNOWN,
pass NULL to the AUX regs array.
This is necessary to support embedded connectors without DDC.
Fixes: 4562236b3bc0 ("drm/amd/dc: Add dc display driver (v2)")
Link: https://gitlab.freedesktop.org/drm/amd/-/work_items/5192
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 155baf3038c1af50b602723022ed869b38e86a99)
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c index 33be49b3c1b1..6c00497e9a01 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c @@ -760,7 +760,8 @@ static struct link_encoder *dce80_link_encoder_create( enc_init_data, &link_enc_feature, &link_enc_regs[link_regs_id], - &link_enc_aux_regs[enc_init_data->channel - 1], + enc_init_data->channel == CHANNEL_ID_UNKNOWN ? + NULL : &link_enc_aux_regs[enc_init_data->channel - 1], enc_init_data->hpd_source >= ARRAY_SIZE(link_enc_hpd_regs) ? NULL : &link_enc_hpd_regs[enc_init_data->hpd_source]); return &enc110->base; |