drm/radeon: restructure edid fetching

Split radeon_ddc_get_modes() and move it into
radeon_connectors.c since that is the only place
that uses it.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 110 insertions, 52 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index ce50ea629c71..5b5d28ad9ba5 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -262,6 +262,79 @@ static struct drm_encoder *radeon_find_encoder(struct drm_connector *connector,
 	return NULL;
 }
 
+static void radeon_connector_get_edid(struct drm_connector *connector)
+{
+	struct drm_device *dev = connector->dev;
+	struct radeon_device *rdev = dev->dev_private;
+	struct radeon_connector *radeon_connector = to_radeon_connector(connector);
+
+	if (radeon_connector->edid)
+		return;
+
+	/* on hw with routers, select right port */
+	if (radeon_connector->router.ddc_valid)
+		radeon_router_select_ddc_port(radeon_connector);
+
+	if ((radeon_connector_encoder_get_dp_bridge_encoder_id(connector) !=
+	     ENCODER_OBJECT_ID_NONE) &&
+	    radeon_connector->ddc_bus->has_aux) {
+		radeon_connector->edid = drm_get_edid(connector,
+						      &radeon_connector->ddc_bus->aux.ddc);
+	} else if ((connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) ||
+		   (connector->connector_type == DRM_MODE_CONNECTOR_eDP)) {
+		struct radeon_connector_atom_dig *dig = radeon_connector->con_priv;
+
+		if ((dig->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT ||
+		     dig->dp_sink_type == CONNECTOR_OBJECT_ID_eDP) &&
+		    radeon_connector->ddc_bus->has_aux)
+			radeon_connector->edid = drm_get_edid(&radeon_connector->base,
+							      &radeon_connector->ddc_bus->aux.ddc);
+		else if (radeon_connector->ddc_bus)
+			radeon_connector->edid = drm_get_edid(&radeon_connector->base,
+							      &radeon_connector->ddc_bus->adapter);
+	} else if (radeon_connector->ddc_bus) {
+		radeon_connector->edid = drm_get_edid(&radeon_connector->base,
+						      &radeon_connector->ddc_bus->adapter);
+	}
+
+	if (!radeon_connector->edid) {
+		if (rdev->is_atom_bios) {
+			/* some laptops provide a hardcoded edid in rom for LCDs */
+			if (((connector->connector_type == DRM_MODE_CONNECTOR_LVDS) ||
+			     (connector->connector_type == DRM_MODE_CONNECTOR_eDP)))
+				radeon_connector->edid = radeon_bios_get_hardcoded_edid(rdev);
+		} else {
+			/* some servers provide a hardcoded edid in rom for KVMs */
+			radeon_connector->edid = radeon_bios_get_hardcoded_edid(rdev);
+		}
+	}
+}
+
+static void radeon_connector_free_edid(struct drm_connector *connector)
+{
+	struct radeon_connector *radeon_connector = to_radeon_connector(connector);
+
+	if (radeon_connector->edid) {
+		kfree(radeon_connector->edid);
+		radeon_connector->edid = NULL;
+	}
+}
+
+static int radeon_ddc_get_modes(struct drm_connector *connector)
+{
+	struct radeon_connector *radeon_connector = to_radeon_connector(connector);
+	int ret;
+
+	if (radeon_connector->edid) {
+		drm_mode_connector_update_edid_property(connector, radeon_connector->edid);
+		ret = drm_add_edid_modes(connector, radeon_connector->edid);
+		drm_edid_to_eld(connector, radeon_connector->edid);
+		return ret;
+	}
+	drm_mode_connector_update_edid_property(connector, NULL);
+	return 0;
+}
+
 static struct drm_encoder *radeon_best_single_encoder(struct drm_connector *connector)
 {
 	int enc_id = connector->encoder_ids[0];
@@ -661,22 +734,20 @@ static void radeon_fixup_lvds_native_mode(struct drm_encoder *encoder,
 
 static int radeon_lvds_get_modes(struct drm_connector *connector)
 {
-	struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 	struct drm_encoder *encoder;
 	int ret = 0;
 	struct drm_display_mode *mode;
 
-	if (radeon_connector->ddc_bus) {
-		ret = radeon_ddc_get_modes(radeon_connector);
-		if (ret > 0) {
-			encoder = radeon_best_single_encoder(connector);
-			if (encoder) {
-				radeon_fixup_lvds_native_mode(encoder, connector);
-				/* add scaled modes */
-				radeon_add_common_modes(encoder, connector);
-			}
-			return ret;
+	radeon_connector_get_edid(connector);
+	ret = radeon_ddc_get_modes(connector);
+	if (ret > 0) {
+		encoder = radeon_best_single_encoder(connector);
+		if (encoder) {
+			radeon_fixup_lvds_native_mode(encoder, connector);
+			/* add scaled modes */
+			radeon_add_common_modes(encoder, connector);
 		}
+		return ret;
 	}
 
 	encoder = radeon_best_single_encoder(connector);
@@ -751,16 +822,9 @@ radeon_lvds_detect(struct drm_connector *connector, bool force)
 	}
 
 	/* check for edid as well */
+	radeon_connector_get_edid(connector);
 	if (radeon_connector->edid)
 		ret = connector_status_connected;
-	else {
-		if (radeon_connector->ddc_bus) {
-			radeon_connector->edid = drm_get_edid(&radeon_connector->base,
-							      &radeon_connector->ddc_bus->adapter);
-			if (radeon_connector->edid)
-				ret = connector_status_connected;
-		}
-	}
 	/* check acpi lid status ??? */
 
 	radeon_connector_update_scratch_regs(connector, ret);
@@ -773,8 +837,7 @@ static void radeon_connector_destroy(struct drm_connector *connector)
 {
 	struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 
-	if (radeon_connector->edid)
-		kfree(radeon_connector->edid);
+	radeon_connector_free_edid(connector);
 	kfree(radeon_connector->con_priv);
 	drm_connector_unregister(connector);
 	drm_connector_cleanup(connector);
@@ -833,10 +896,10 @@ static const struct drm_connector_funcs radeon_lvds_connector_funcs = {
 
 static int radeon_vga_get_modes(struct drm_connector *connector)
 {
-	struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 	int ret;
 
-	ret = radeon_ddc_get_modes(radeon_connector);
+	radeon_connector_get_edid(connector);
+	ret = radeon_ddc_get_modes(connector);
 
 	radeon_get_native_mode(connector);
 
@@ -881,28 +944,26 @@ radeon_vga_detect(struct drm_connector *connector, bool force)
 		dret = radeon_ddc_probe(radeon_connector, false);
 	if (dret) {
 		radeon_connector->detected_by_load = false;
-		if (radeon_connector->edid) {
-			kfree(radeon_connector->edid);
-			radeon_connector->edid = NULL;
-		}
-		radeon_connector->edid = drm_get_edid(&radeon_connector->base, &radeon_connector->ddc_bus->adapter);
+		radeon_connector_free_edid(connector);
+		radeon_connector_get_edid(connector);
 
 		if (!radeon_connector->edid) {
 			DRM_ERROR("%s: probed a monitor but no|invalid EDID\n",
 					connector->name);
 			ret = connector_status_connected;
 		} else {
-			radeon_connector->use_digital = !!(radeon_connector->edid->input & DRM_EDID_INPUT_DIGITAL);
+			radeon_connector->use_digital =
+				!!(radeon_connector->edid->input & DRM_EDID_INPUT_DIGITAL);
 
 			/* some oems have boards with separate digital and analog connectors
 			 * with a shared ddc line (often vga + hdmi)
 			 */
 			if (radeon_connector->use_digital && radeon_connector->shared_ddc) {
-				kfree(radeon_connector->edid);
-				radeon_connector->edid = NULL;
+				radeon_connector_free_edid(connector);
 				ret = connector_status_disconnected;
-			} else
+			} else {
 				ret = connector_status_connected;
+			}
 		}
 	} else {
 
@@ -1094,18 +1155,16 @@ radeon_dvi_detect(struct drm_connector *connector, bool force)
 		dret = radeon_ddc_probe(radeon_connector, false);
 	if (dret) {
 		radeon_connector->detected_by_load = false;
-		if (radeon_connector->edid) {
-			kfree(radeon_connector->edid);
-			radeon_connector->edid = NULL;
-		}
-		radeon_connector->edid = drm_get_edid(&radeon_connector->base, &radeon_connector->ddc_bus->adapter);
+		radeon_connector_free_edid(connector);
+		radeon_connector_get_edid(connector);
 
 		if (!radeon_connector->edid) {
 			DRM_ERROR("%s: probed a monitor but no|invalid EDID\n",
 					connector->name);
 			/* rs690 seems to have a problem with connectors not existing and always
 			 * return a block of 0's. If we see this just stop polling on this output */
-			if ((rdev->family == CHIP_RS690 || rdev->family == CHIP_RS740) && radeon_connector->base.null_edid_counter) {
+			if ((rdev->family == CHIP_RS690 || rdev->family == CHIP_RS740) &&
+			    radeon_connector->base.null_edid_counter) {
 				ret = connector_status_disconnected;
 				DRM_ERROR("%s: detected RS690 floating bus bug, stopping ddc detect\n",
 					  connector->name);
@@ -1115,18 +1174,18 @@ radeon_dvi_detect(struct drm_connector *connector, bool force)
 				broken_edid = true; /* defer use_digital to later */
 			}
 		} else {
-			radeon_connector->use_digital = !!(radeon_connector->edid->input & DRM_EDID_INPUT_DIGITAL);
+			radeon_connector->use_digital =
+				!!(radeon_connector->edid->input & DRM_EDID_INPUT_DIGITAL);
 
 			/* some oems have boards with separate digital and analog connectors
 			 * with a shared ddc line (often vga + hdmi)
 			 */
 			if ((!radeon_connector->use_digital) && radeon_connector->shared_ddc) {
-				kfree(radeon_connector->edid);
-				radeon_connector->edid = NULL;
+				radeon_connector_free_edid(connector);
 				ret = connector_status_disconnected;
-			} else
+			} else {
 				ret = connector_status_connected;
-
+			}
 			/* This gets complicated.  We have boards with VGA + HDMI with a
 			 * shared DDC line and we have boards with DVI-D + HDMI with a shared
 			 * DDC line.  The latter is more complex because with DVI<->HDMI adapters
@@ -1146,8 +1205,7 @@ radeon_dvi_detect(struct drm_connector *connector, bool force)
 						if (list_connector->connector_type != DRM_MODE_CONNECTOR_VGA) {
 							/* hpd is our only option in this case */
 							if (!radeon_hpd_sense(rdev, radeon_connector->hpd.hpd)) {
-								kfree(radeon_connector->edid);
-								radeon_connector->edid = NULL;
+								radeon_connector_free_edid(connector);
 								ret = connector_status_disconnected;
 							}
 						}
@@ -1356,7 +1414,8 @@ static int radeon_dp_get_modes(struct drm_connector *connector)
 			if (!radeon_dig_connector->edp_on)
 				atombios_set_edp_panel_power(connector,
 							     ATOM_TRANSMITTER_ACTION_POWER_ON);
-			ret = radeon_ddc_get_modes(radeon_connector);
+			radeon_connector_get_edid(connector);
+			ret = radeon_ddc_get_modes(connector);
 			if (!radeon_dig_connector->edp_on)
 				atombios_set_edp_panel_power(connector,
 							     ATOM_TRANSMITTER_ACTION_POWER_OFF);
@@ -1367,7 +1426,8 @@ static int radeon_dp_get_modes(struct drm_connector *connector)
 				if (encoder)
 					radeon_atom_ext_encoder_setup_ddc(encoder);
 			}
-			ret = radeon_ddc_get_modes(radeon_connector);
+			radeon_connector_get_edid(connector);
+			ret = radeon_ddc_get_modes(connector);
 		}
 
 		if (ret > 0) {
@@ -1400,7 +1460,8 @@ static int radeon_dp_get_modes(struct drm_connector *connector)
 			if (encoder)
 				radeon_atom_ext_encoder_setup_ddc(encoder);
 		}
-		ret = radeon_ddc_get_modes(radeon_connector);
+		radeon_connector_get_edid(connector);
+		ret = radeon_ddc_get_modes(connector);
 
 		radeon_get_native_mode(connector);
 	}
@@ -1493,10 +1554,7 @@ radeon_dp_detect(struct drm_connector *connector, bool force)
 		goto out;
 	}
 
-	if (radeon_connector->edid) {
-		kfree(radeon_connector->edid);
-		radeon_connector->edid = NULL;
-	}
+	radeon_connector_free_edid(connector);
 
 	if ((connector->connector_type == DRM_MODE_CONNECTOR_eDP) ||
 	    (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)) {