drm/radeon/kms: add support for eDP (embedded DisplayPort)

This is displayport used for internal connections such
as laptop panels and systems with integrated monitors.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

5 files changed, 32 insertions, 12 deletions

diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
index 0d63c4436e7c..3eb0ca5b3d73 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -468,7 +468,8 @@ void radeon_dp_set_link_config(struct drm_connector *connector,
         struct radeon_connector *radeon_connector;
         struct radeon_connector_atom_dig *dig_connector;
 
-        if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
+        if ((connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) ||
+            (connector->connector_type != DRM_MODE_CONNECTOR_eDP))
                 return;
 
         radeon_connector = to_radeon_connector(connector);
@@ -582,7 +583,8 @@ void dp_link_train(struct drm_encoder *encoder,
         u8 train_set[4];
         int i;
 
-        if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
+        if ((connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) ||
+            (connector->connector_type != DRM_MODE_CONNECTOR_eDP))
                 return;
 
         if (!radeon_encoder->enc_priv)
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 41dd8ebff219..183403540113 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -346,7 +346,9 @@ const int object_connector_convert[] = {
         DRM_MODE_CONNECTOR_Unknown,
         DRM_MODE_CONNECTOR_Unknown,
         DRM_MODE_CONNECTOR_Unknown,
-        DRM_MODE_CONNECTOR_DisplayPort
+        DRM_MODE_CONNECTOR_DisplayPort,
+        DRM_MODE_CONNECTOR_eDP,
+        DRM_MODE_CONNECTOR_Unknown
 };
 
 bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index b82ae61d4d17..9da10dd5df80 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -49,8 +49,10 @@ void radeon_connector_hotplug(struct drm_connector *connector)
         if (radeon_connector->hpd.hpd != RADEON_HPD_NONE)
                 radeon_hpd_set_polarity(rdev, radeon_connector->hpd.hpd);
 
-        if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
-                if (radeon_dp_getsinktype(radeon_connector) == CONNECTOR_OBJECT_ID_DISPLAYPORT) {
+        if ((connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) ||
+            (connector->connector_type == DRM_MODE_CONNECTOR_eDP)) {
+                if ((radeon_dp_getsinktype(radeon_connector) == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
+                    (radeon_dp_getsinktype(radeon_connector) == CONNECTOR_OBJECT_ID_eDP)) {
                         if (radeon_dp_needs_link_train(radeon_connector)) {
                                 if (connector->encoder)
                                         dp_link_train(connector->encoder, connector);
@@ -967,7 +969,8 @@ static enum drm_connector_status radeon_dp_detect(struct drm_connector *connecto
         }
 
         sink_type = radeon_dp_getsinktype(radeon_connector);
-        if (sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) {
+        if ((sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
+            (sink_type == CONNECTOR_OBJECT_ID_eDP)) {
                 if (radeon_dp_getdpcd(radeon_connector)) {
                         radeon_dig_connector->dp_sink_type = sink_type;
                         ret = connector_status_connected;
@@ -992,7 +995,8 @@ static int radeon_dp_mode_valid(struct drm_connector *connector,
 
         /* XXX check mode bandwidth */
 
-        if (radeon_dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT)
+        if ((radeon_dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
+            (radeon_dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP))
                 return radeon_dp_mode_valid_helper(radeon_connector, mode);
         else
                 return MODE_OK;
@@ -1145,6 +1149,7 @@ radeon_add_atom_connector(struct drm_device *dev,
                 subpixel_order = SubPixelHorizontalRGB;
                 break;
         case DRM_MODE_CONNECTOR_DisplayPort:
+        case DRM_MODE_CONNECTOR_eDP:
                 radeon_dig_connector = kzalloc(sizeof(struct radeon_connector_atom_dig), GFP_KERNEL);
                 if (!radeon_dig_connector)
                         goto failed;
@@ -1157,10 +1162,16 @@ radeon_add_atom_connector(struct drm_device *dev,
                         goto failed;
                 if (i2c_bus->valid) {
                         /* add DP i2c bus */
-                        radeon_dig_connector->dp_i2c_bus = radeon_i2c_create_dp(dev, i2c_bus, "DP-auxch");
+                        if (connector_type == DRM_MODE_CONNECTOR_eDP)
+                                radeon_dig_connector->dp_i2c_bus = radeon_i2c_create_dp(dev, i2c_bus, "eDP-auxch");
+                        else
+                                radeon_dig_connector->dp_i2c_bus = radeon_i2c_create_dp(dev, i2c_bus, "DP-auxch");
                         if (!radeon_dig_connector->dp_i2c_bus)
                                 goto failed;
-                        radeon_connector->ddc_bus = radeon_i2c_create(dev, i2c_bus, "DP");
+                        if (connector_type == DRM_MODE_CONNECTOR_eDP)
+                                radeon_connector->ddc_bus = radeon_i2c_create(dev, i2c_bus, "eDP");
+                        else
+                                radeon_connector->ddc_bus = radeon_i2c_create(dev, i2c_bus, "DP");
                         if (!radeon_connector->ddc_bus)
                                 goto failed;
                 }
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 1fb2f029d7e8..0ec491ead2ff 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -234,7 +234,7 @@ static const char *encoder_names[34] = {
         "INTERNAL_UNIPHY2",
 };
 
-static const char *connector_names[13] = {
+static const char *connector_names[15] = {
         "Unknown",
         "VGA",
         "DVI-I",
@@ -248,6 +248,8 @@ static const char *connector_names[13] = {
         "DisplayPort",
         "HDMI-A",
         "HDMI-B",
+        "TV",
+        "eDP",
 };
 
 static const char *hpd_names[7] = {
@@ -352,7 +354,8 @@ int radeon_ddc_get_modes(struct radeon_connector *radeon_connector)
 {
         int ret = 0;
 
-        if (radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
+        if ((radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort) ||
+            (radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)) {
                 struct radeon_connector_atom_dig *dig = radeon_connector->con_priv;
                 if (dig->dp_i2c_bus)
                         radeon_connector->edid = drm_get_edid(&radeon_connector->base, &dig->dp_i2c_bus->adapter);
diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c
index 844c513f7244..82eb551970b9 100644
--- a/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -596,8 +596,10 @@ atombios_get_encoder_mode(struct drm_encoder *encoder)
                 return ATOM_ENCODER_MODE_LVDS;
                 break;
         case DRM_MODE_CONNECTOR_DisplayPort:
+        case DRM_MODE_CONNECTOR_eDP:
                 radeon_dig_connector = radeon_connector->con_priv;
-                if (radeon_dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT)
+                if ((radeon_dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
+                    (radeon_dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP))
                         return ATOM_ENCODER_MODE_DP;
                 else if (drm_detect_hdmi_monitor(radeon_connector->edid))
                         return ATOM_ENCODER_MODE_HDMI;