The eDP panel must be powered up for aux transactions, so power it up for detect and mode probe functions, otherwise power it up or down based on dpms.
Signed-off-by: Alex Deucher alexdeucher@gmail.com --- drivers/gpu/drm/radeon/radeon_connectors.c | 13 +++++++++ drivers/gpu/drm/radeon/radeon_encoders.c | 41 ++++++++++++++++++++++++++++ drivers/gpu/drm/radeon/radeon_mode.h | 2 + 3 files changed, 56 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c index fe6c747..76008a5 100644 --- a/drivers/gpu/drm/radeon/radeon_connectors.c +++ b/drivers/gpu/drm/radeon/radeon_connectors.c @@ -1008,9 +1008,16 @@ static void radeon_dp_connector_destroy(struct drm_connector *connector) static int radeon_dp_get_modes(struct drm_connector *connector) { struct radeon_connector *radeon_connector = to_radeon_connector(connector); + struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv; int ret;
+ if (!radeon_dig_connector->edp_on) + atombios_set_edp_panel_power(radeon_connector, + ATOM_TRANSMITTER_ACTION_POWER_ON); ret = radeon_ddc_get_modes(radeon_connector); + if (!radeon_dig_connector->edp_on) + atombios_set_edp_panel_power(radeon_connector, + ATOM_TRANSMITTER_ACTION_POWER_OFF); return ret; }
@@ -1029,8 +1036,14 @@ radeon_dp_detect(struct drm_connector *connector, bool force) if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) { /* eDP is always DP */ radeon_dig_connector->dp_sink_type = CONNECTOR_OBJECT_ID_DISPLAYPORT; + if (!radeon_dig_connector->edp_on) + atombios_set_edp_panel_power(radeon_connector, + ATOM_TRANSMITTER_ACTION_POWER_ON); if (radeon_dp_getdpcd(radeon_connector)) ret = connector_status_connected; + if (!radeon_dig_connector->edp_on) + atombios_set_edp_panel_power(radeon_connector, + ATOM_TRANSMITTER_ACTION_POWER_OFF); } else { radeon_dig_connector->dp_sink_type = radeon_dp_getsinktype(radeon_connector); if (radeon_dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) { diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c index d55cb58..701103c 100644 --- a/drivers/gpu/drm/radeon/radeon_encoders.c +++ b/drivers/gpu/drm/radeon/radeon_encoders.c @@ -978,6 +978,29 @@ atombios_dig_transmitter_setup(struct drm_encoder *encoder, int action, uint8_t atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args); }
+void +atombios_set_edp_panel_power(struct radeon_connector *radeon_connector, int action) +{ + struct drm_device *dev = radeon_connector->base.dev; + struct radeon_device *rdev = dev->dev_private; + union dig_transmitter_control args; + int index = GetIndexIntoMasterTable(COMMAND, UNIPHYTransmitterControl); + uint8_t frev, crev; + + if ((action != ATOM_TRANSMITTER_ACTION_POWER_ON) || + (action != ATOM_TRANSMITTER_ACTION_POWER_OFF)) + return; + + if (!atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev, &crev)) + return; + + memset(&args, 0, sizeof(args)); + + args.v1.ucAction = action; + + atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args); +} + static void atombios_yuv_setup(struct drm_encoder *encoder, bool enable) { @@ -1082,6 +1105,14 @@ radeon_atom_encoder_dpms(struct drm_encoder *encoder, int mode) if (atombios_get_encoder_mode(encoder) == ATOM_ENCODER_MODE_DP) { struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
+ if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) { + struct radeon_connector *radeon_connector = to_radeon_connector(connector); + struct radeon_connector_atom_dig *radeon_dig_connector = + radeon_connector->con_priv; + atombios_set_edp_panel_power(radeon_connector, + ATOM_TRANSMITTER_ACTION_POWER_ON); + radeon_dig_connector->edp_on = true; + } dp_link_train(encoder, connector); if (ASIC_IS_DCE4(rdev)) atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_VIDEO_ON); @@ -1096,6 +1127,16 @@ radeon_atom_encoder_dpms(struct drm_encoder *encoder, int mode) if (atombios_get_encoder_mode(encoder) == ATOM_ENCODER_MODE_DP) { if (ASIC_IS_DCE4(rdev)) atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_VIDEO_OFF); + if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) { + struct drm_connector *connector = + radeon_get_connector_for_encoder(encoder); + struct radeon_connector *radeon_connector = to_radeon_connector(connector); + struct radeon_connector_atom_dig *radeon_dig_connector = + radeon_connector->con_priv; + atombios_set_edp_panel_power(radeon_connector, + ATOM_TRANSMITTER_ACTION_POWER_OFF); + radeon_dig_connector->edp_on = false; + } } if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_LCD_BLOFF, 0, 0); diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h index 680f576..76c0778 100644 --- a/drivers/gpu/drm/radeon/radeon_mode.h +++ b/drivers/gpu/drm/radeon/radeon_mode.h @@ -385,6 +385,7 @@ struct radeon_connector_atom_dig { u8 dp_sink_type; int dp_clock; int dp_lane_count; + bool edp_on; };
struct radeon_gpio_rec { @@ -526,6 +527,7 @@ struct drm_encoder *radeon_encoder_legacy_tmds_ext_add(struct drm_device *dev, i extern void atombios_external_tmds_setup(struct drm_encoder *encoder, int action); extern void atombios_digital_setup(struct drm_encoder *encoder, int action); extern int atombios_get_encoder_mode(struct drm_encoder *encoder); +extern void atombios_set_edp_panel_power(struct radeon_connector *radeon_connector, int action); extern void radeon_encoder_set_active_device(struct drm_encoder *encoder);
extern void radeon_crtc_load_lut(struct drm_crtc *crtc);