/* dc_service_sleep_in_milliseconds(50); */
/*edp 1.2*/
panel_instance = link->panel_cntl->inst;
- if (cntl.action == TRANSMITTER_CONTROL_BACKLIGHT_ON)
- edp_receiver_ready_T7(link);
+
+ if (cntl.action == TRANSMITTER_CONTROL_BACKLIGHT_ON) {
+ if (!link->dc->config.edp_no_power_sequencing)
+ /*
+ * Sometimes, DP receiver chip power-controlled externally by an
+ * Embedded Controller could be treated and used as eDP,
+ * if it drives mobile display. In this case,
+ * we shouldn't be doing power-sequencing, hence we can skip
+ * waiting for T7-ready.
+ */
+ edp_receiver_ready_T7(link);
+ else
+ DC_LOG_DC("edp_receiver_ready_T7 skipped\n");
+ }
if (ctx->dc->ctx->dmub_srv &&
ctx->dc->debug.dmub_command_table) {
dc_link_backlight_enable_aux(link, enable);
/*edp 1.2*/
- if (cntl.action == TRANSMITTER_CONTROL_BACKLIGHT_OFF)
- edp_add_delay_for_T9(link);
+ if (cntl.action == TRANSMITTER_CONTROL_BACKLIGHT_OFF) {
+ if (!link->dc->config.edp_no_power_sequencing)
+ /*
+ * Sometimes, DP receiver chip power-controlled externally by an
+ * Embedded Controller could be treated and used as eDP,
+ * if it drives mobile display. In this case,
+ * we shouldn't be doing power-sequencing, hence we can skip
+ * waiting for T9-ready.
+ */
+ edp_add_delay_for_T9(link);
+ else
+ DC_LOG_DC("edp_receiver_ready_T9 skipped\n");
+ }
if (!enable && link->dpcd_sink_ext_caps.bits.oled)
msleep(OLED_PRE_T11_DELAY);
};
enum DC_FEATURE_MASK {
- DC_FBC_MASK = 0x1,
- DC_MULTI_MON_PP_MCLK_SWITCH_MASK = 0x2,
- DC_DISABLE_FRACTIONAL_PWM_MASK = 0x4,
- DC_PSR_MASK = 0x8,
+ //Default value can be found at "uint amdgpu_dc_feature_mask"
+ DC_FBC_MASK = (1 << 0), //0x1, disabled by default
+ DC_MULTI_MON_PP_MCLK_SWITCH_MASK = (1 << 1), //0x2, enabled by default
+ DC_DISABLE_FRACTIONAL_PWM_MASK = (1 << 2), //0x4, disabled by default
+ DC_PSR_MASK = (1 << 3), //0x8, disabled by default
+ DC_EDP_NO_POWER_SEQUENCING = (1 << 4), //0x10, disabled by default
};
enum DC_DEBUG_MASK {