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drm/amd/display: Send DISPLAY_OFF after power down on boot

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[WHY]
update_clocks might not be called on headless adapters. This means
DISPLAY_OFF may not be sent in headless cases.

[HOW]
If hardware is powered down on boot because it is headless (mode set
does not happen on that adapter) also send DISPLAY_OFF notification.

Signed-off-by: Sung Lee <sung.lee@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Sung Lee 2020-08-11 17:23:20 -04:00 committed by Alex Deucher
parent de7a1b0b87
commit d2ce14fd99
3 changed files with 42 additions and 21 deletions
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10
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
View File

@ -94,6 +94,15 @@ int rn_get_active_display_cnt_wa(
return display_count;
}
void rn_set_low_power_state(struct clk_mgr *clk_mgr_base)
{
struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
rn_vbios_smu_set_dcn_low_power_state(clk_mgr, DCN_PWR_STATE_LOW_POWER);
/* update power state */
clk_mgr_base->clks.pwr_state = DCN_PWR_STATE_LOW_POWER;
}
void rn_update_clocks(struct clk_mgr *clk_mgr_base,
struct dc_state *context,
bool safe_to_lower)
@ -516,6 +525,7 @@ static struct clk_mgr_funcs dcn21_funcs = {
.init_clocks = rn_init_clocks,
.enable_pme_wa = rn_enable_pme_wa,
.are_clock_states_equal = rn_are_clock_states_equal,
.set_low_power_state = rn_set_low_power_state,
.notify_wm_ranges = rn_notify_wm_ranges,
.notify_link_rate_change = rn_notify_link_rate_change,
};

51
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
View File

@ -1450,33 +1450,42 @@ void dcn10_init_hw(struct dc *dc)
void dcn10_power_down_on_boot(struct dc *dc)
{
int i = 0;
struct dc_link *edp_link;
if (dc->config.power_down_display_on_boot) {
struct dc_link *edp_link = get_edp_link(dc);
if (!dc->config.power_down_display_on_boot)
return;
if (edp_link &&
edp_link->link_enc->funcs->is_dig_enabled &&
edp_link->link_enc->funcs->is_dig_enabled(edp_link->link_enc) &&
dc->hwseq->funcs.edp_backlight_control &&
dc->hwss.power_down &&
dc->hwss.edp_power_control) {
dc->hwseq->funcs.edp_backlight_control(edp_link, false);
dc->hwss.power_down(dc);
dc->hwss.edp_power_control(edp_link, false);
} else {
for (i = 0; i < dc->link_count; i++) {
struct dc_link *link = dc->links[i];
if (link->link_enc->funcs->is_dig_enabled &&
link->link_enc->funcs->is_dig_enabled(link->link_enc) &&
dc->hwss.power_down) {
dc->hwss.power_down(dc);
break;
}
edp_link = get_edp_link(dc);
if (edp_link &&
edp_link->link_enc->funcs->is_dig_enabled &&
edp_link->link_enc->funcs->is_dig_enabled(edp_link->link_enc) &&
dc->hwseq->funcs.edp_backlight_control &&
dc->hwss.power_down &&
dc->hwss.edp_power_control) {
dc->hwseq->funcs.edp_backlight_control(edp_link, false);
dc->hwss.power_down(dc);
dc->hwss.edp_power_control(edp_link, false);
} else {
for (i = 0; i < dc->link_count; i++) {
struct dc_link *link = dc->links[i];
if (link->link_enc->funcs->is_dig_enabled &&
link->link_enc->funcs->is_dig_enabled(link->link_enc) &&
dc->hwss.power_down) {
dc->hwss.power_down(dc);
break;
}
}
}
/*
* Call update_clocks with empty context
* to send DISPLAY_OFF
* Otherwise DISPLAY_OFF may not be asserted
*/
if (dc->clk_mgr->funcs->set_low_power_state)
dc->clk_mgr->funcs->set_low_power_state(dc->clk_mgr);
}
void dcn10_reset_hw_ctx_wrap(

2
drivers/gpu/drm/amd/display/dc/inc/hw/clk_mgr.h
View File

@ -230,6 +230,8 @@ struct clk_mgr_funcs {
int (*get_dp_ref_clk_frequency)(struct clk_mgr *clk_mgr);
void (*set_low_power_state)(struct clk_mgr *clk_mgr);
void (*init_clocks)(struct clk_mgr *clk_mgr);
void (*enable_pme_wa) (struct clk_mgr *clk_mgr);