Commit 880498a1 authored by Timur Kristóf's avatar Timur Kristóf Committed by Alex Deucher
Browse files

drm/amd/display: Allow constructing DCE6 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: 7c15fd86 ("drm/amd/display: dc/dce: add initial DCE6 support (v10)")
Link: https://gitlab.freedesktop.org/drm/amd/-/work_items/5192


Signed-off-by: default avatarTimur Kristóf <timur.kristof@gmail.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 38a70e50b22a188ff601740d64dd75f46213121f)
parent ac27e3f9

drivers/gpu/drm/amd/display/dc/resource/dce60/dce60_resource.c

+2 −1
Original line number Diff line number Diff line
@@ -753,7 +753,8 @@ static struct link_encoder *dce60_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;