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drm/amd/display: Optimize power up sequence for specific OLED

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[why & how]
OLED power up sequence takes an extra 150ms via hardcoded delay,
but there is a strict requirement on DisplayOn resume time.
For customer panel, remove these delays to meet target until a
cleaner solution is can be put in place.

Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Signed-off-by: Ovidiu Bunea <Ovidiu.Bunea@amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Ovidiu Bunea 2024-10-11 14:55:52 -04:00 committed by Alex Deucher
parent 57e92d991e
commit 7a65e88f13
4 changed files with 15 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/amd/display/dc/dc.h
View File

@ -1067,6 +1067,7 @@ struct dc_debug_options {
unsigned int sharpen_policy;
unsigned int scale_to_sharpness_policy;
bool skip_full_updated_if_possible;
unsigned int enable_oled_edp_power_up_opt;
};

1
drivers/gpu/drm/amd/display/dc/dc_types.h
View File

@ -180,6 +180,7 @@ struct dc_panel_patch {
unsigned int remove_sink_ext_caps;
unsigned int disable_colorimetry;
uint8_t blankstream_before_otg_off;
bool oled_optimize_display_on;
};
struct dc_edid_caps {

3
drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c
View File

@ -1039,7 +1039,8 @@ void dce110_edp_backlight_control(
link_transmitter_control(ctx->dc_bios, &cntl);
if (enable && link->dpcd_sink_ext_caps.bits.oled &&
!link->dc->config.edp_no_power_sequencing) {
!link->dc->config.edp_no_power_sequencing &&
!link->local_sink->edid_caps.panel_patch.oled_optimize_display_on) {
post_T7_delay += link->panel_config.pps.extra_post_t7_ms;
msleep(post_T7_delay);
}

15
drivers/gpu/drm/amd/display/dc/link/link_dpms.c
View File

@ -2082,6 +2082,9 @@ static enum dc_status enable_link_dp(struct dc_state *state,
if (link_settings->link_rate == LINK_RATE_LOW)
skip_video_pattern = false;
if (stream->sink_patches.oled_optimize_display_on)
set_default_brightness_aux(link);
if (perform_link_training_with_retries(link_settings,
skip_video_pattern,
lt_attempts,
@ -2105,10 +2108,14 @@ static enum dc_status enable_link_dp(struct dc_state *state,
if (link->dpcd_sink_ext_caps.bits.oled == 1 ||
link->dpcd_sink_ext_caps.bits.sdr_aux_backlight_control == 1 ||
link->dpcd_sink_ext_caps.bits.hdr_aux_backlight_control == 1) {
set_default_brightness_aux(link);
if (link->dpcd_sink_ext_caps.bits.oled == 1)
msleep(bl_oled_enable_delay);
edp_backlight_enable_aux(link, true);
if (!stream->sink_patches.oled_optimize_display_on) {
set_default_brightness_aux(link);
if (link->dpcd_sink_ext_caps.bits.oled == 1)
msleep(bl_oled_enable_delay);
edp_backlight_enable_aux(link, true);
} else {
edp_backlight_enable_aux(link, true);
}
}
return status;