drm/amd/display: Allow DCE link encoder without AUX registers

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

Allow constructing the DCE link encoder without DDC,
which means the AUX registers array will be NULL.

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 87f30b101af62590faf6020d106da07efdda199b)

authored by

Timur Kristóf and committed by

Alex Deucher 1 week ago ac27e3f9 494941aa

+3 -1

1 changed file

expand all

drivers

gpu

drm

amd

display

dce

dce_link_encoder.c

+3 -1

drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c

··· 1102 1102 ASSERT(result == BP_RESULT_OK); 1103 1103 1104 1104 } 1105 - aux_initialize(enc110); 1105 + 1106 + if (enc110->aux_regs) 1107 + aux_initialize(enc110); 1106 1108 1107 1109 /* reinitialize HPD. 1108 1110 * hpd_initialize() will pass DIG_FE id to HW context.

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