Commit 1611917f authored by Hamza Mahfooz's avatar Hamza Mahfooz Committed by Alex Deucher
Browse files

drm/amd/display: register edp_backlight_control() for DCN301 

As made mention of in commit 099303e9 ("drm/amd/display: eDP
intermittent black screen during PnP"), we need to turn off the
display's backlight before powering off an eDP display. Not doing so
will result in undefined behaviour according to the eDP spec. So, set
DCN301's edp_backlight_control() function pointer to
dce110_edp_backlight_control().

Cc: stable@vger.kernel.org
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2765


Fixes: 9c75891f ("drm/amd/display: rework recent update PHY state commit")
Suggested-by: default avatarSwapnil Patel <swapnil.patel@amd.com>
Reviewed-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarHamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 7c2949c1

drivers/gpu/drm/amd/display/dc/dcn301/dcn301_init.c

+1 −0
Original line number Diff line number Diff line
@@ -75,6 +75,7 @@ static const struct hw_sequencer_funcs dcn301_funcs = { 
	.get_hw_state = dcn10_get_hw_state,

	.clear_status_bits = dcn10_clear_status_bits,

	.wait_for_mpcc_disconnect = dcn10_wait_for_mpcc_disconnect,

	.edp_backlight_control = dce110_edp_backlight_control,

	.edp_power_control = dce110_edp_power_control,

	.edp_wait_for_hpd_ready = dce110_edp_wait_for_hpd_ready,

	.set_cursor_position = dcn10_set_cursor_position,