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drm/amd/display: Power down hw blocks on boot

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[WHY]
On headless boot a DIG may be turned on by VBIOS on RN.  This leads to
display_count being non-zero in hybrid graphics cases leading to SMU
DISPLAY_OFF message not being sent.

[HOW]
Power down hardware on boot
if seamless boot is not occurring
(power_down_display_on_boot == 1)

Signed-off-by: Sung Lee <sung.lee@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Sung Lee 2020-04-05 16:40:45 -04:00 committed by Alex Deucher
parent 2deade5ede
commit b3a941df69
3 changed files with 34 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
View File

@ -1361,6 +1361,35 @@ void dcn10_init_hw(struct dc *dc)
!dc->res_pool->hubbub->ctx->dc->debug.disable_stutter);
}
/* In headless boot cases, DIG may be turned
* on which causes HW/SW discrepancies.
* To avoid this, power down hardware on boot
* if DIG is turned on and seamless boot not enabled
*/
if (dc->config.power_down_display_on_boot) {
struct dc_link *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->hwss.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;
}
}
}
}
for (i = 0; i < res_pool->audio_count; i++) {
struct audio *audio = res_pool->audios[i];

1
drivers/gpu/drm/amd/display/dc/dcn21/dcn21_init.c
View File

@ -90,6 +90,7 @@ static const struct hw_sequencer_funcs dcn21_funcs = {
.set_cursor_sdr_white_level = dcn10_set_cursor_sdr_white_level,
.optimize_pwr_state = dcn21_optimize_pwr_state,
.exit_optimized_pwr_state = dcn21_exit_optimized_pwr_state,
.power_down = dce110_power_down,
};
static const struct hwseq_private_funcs dcn21_private_funcs = {

4
drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
View File

@ -75,9 +75,13 @@ struct hw_sequencer_funcs {
void (*wait_for_mpcc_disconnect)(struct dc *dc,
struct resource_pool *res_pool,
struct pipe_ctx *pipe_ctx);
void (*edp_backlight_control)(
struct dc_link *link,
bool enable);
void (*program_triplebuffer)(const struct dc *dc,
struct pipe_ctx *pipe_ctx, bool enableTripleBuffer);
void (*update_pending_status)(struct pipe_ctx *pipe_ctx);
void (*power_down)(struct dc *dc);
/* Pipe Lock Related */
void (*pipe_control_lock)(struct dc *dc,