C++ drm_connector_init函数代码示例

static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, const char *pathprop)
{
	struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr);
	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
	struct drm_device *dev = intel_dig_port->base.base.dev;
	struct intel_connector *intel_connector;
	struct drm_connector *connector;
	int i;

	intel_connector = intel_connector_alloc();
	if (!intel_connector)
		return NULL;

	connector = &intel_connector->base;
	drm_connector_init(dev, connector, &intel_dp_mst_connector_funcs, DRM_MODE_CONNECTOR_DisplayPort);
	drm_connector_helper_add(connector, &intel_dp_mst_connector_helper_funcs);

	intel_connector->get_hw_state = intel_dp_mst_get_hw_state;
	intel_connector->mst_port = intel_dp;
	intel_connector->port = port;

	for (i = PIPE_A; i <= PIPE_C; i++) {
		drm_mode_connector_attach_encoder(&intel_connector->base,
						  &intel_dp->mst_encoders[i]->base.base);
	}
	intel_dp_add_properties(intel_dp, connector);

	drm_object_attach_property(&connector->base, dev->mode_config.path_property, 0);
	drm_object_attach_property(&connector->base, dev->mode_config.tile_property, 0);

	drm_mode_connector_set_path_property(connector, pathprop);
	return connector;
}

static int dce_virtual_connector_encoder_init(struct amdgpu_device *adev,
					      int index)
{
	struct drm_encoder *encoder;
	struct drm_connector *connector;

	/* add a new encoder */
	encoder = kzalloc(sizeof(struct drm_encoder), GFP_KERNEL);
	if (!encoder)
		return -ENOMEM;
	encoder->possible_crtcs = 1 << index;
	drm_encoder_init(adev->ddev, encoder, &dce_virtual_encoder_funcs,
			 DRM_MODE_ENCODER_VIRTUAL, NULL);
	drm_encoder_helper_add(encoder, &dce_virtual_encoder_helper_funcs);

	connector = kzalloc(sizeof(struct drm_connector), GFP_KERNEL);
	if (!connector) {
		kfree(encoder);
		return -ENOMEM;
	}

	/* add a new connector */
	drm_connector_init(adev->ddev, connector, &dce_virtual_connector_funcs,
			   DRM_MODE_CONNECTOR_VIRTUAL);
	drm_connector_helper_add(connector, &dce_virtual_connector_helper_funcs);
	connector->display_info.subpixel_order = SubPixelHorizontalRGB;
	connector->interlace_allowed = false;
	connector->doublescan_allowed = false;
	drm_connector_register(connector);

	/* link them */
	drm_mode_connector_attach_encoder(connector, encoder);

	return 0;
}

void cdv_intel_crt_init(struct drm_device *dev,
			struct psb_intel_mode_device *mode_dev)
{

	struct psb_intel_connector *psb_intel_connector;
	struct psb_intel_encoder *psb_intel_encoder;
	struct drm_connector *connector;
	struct drm_encoder *encoder;

	u32 i2c_reg;

	psb_intel_encoder = kzalloc(sizeof(struct psb_intel_encoder), GFP_KERNEL);
	if (!psb_intel_encoder)
		return;

	psb_intel_connector = kzalloc(sizeof(struct psb_intel_connector), GFP_KERNEL);
	if (!psb_intel_connector)
		goto failed_connector;

	connector = &psb_intel_connector->base;
	drm_connector_init(dev, connector,
		&cdv_intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA);

	encoder = &psb_intel_encoder->base;
	drm_encoder_init(dev, encoder,
		&cdv_intel_crt_enc_funcs, DRM_MODE_ENCODER_DAC);

	psb_intel_connector_attach_encoder(psb_intel_connector,
					   psb_intel_encoder);

	
	i2c_reg = GPIOA;
	
	psb_intel_encoder->ddc_bus = psb_intel_i2c_create(dev,
							  i2c_reg, "CRTDDC_A");
	if (!psb_intel_encoder->ddc_bus) {
		dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration "
			   "failed.\n");
		goto failed_ddc;
	}

	psb_intel_encoder->type = INTEL_OUTPUT_ANALOG;
	connector->interlace_allowed = 0;
	connector->doublescan_allowed = 0;

	drm_encoder_helper_add(encoder, &cdv_intel_crt_helper_funcs);
	drm_connector_helper_add(connector,
					&cdv_intel_crt_connector_helper_funcs);

	drm_sysfs_connector_add(connector);

	return;
failed_ddc:
	drm_encoder_cleanup(&psb_intel_encoder->base);
	drm_connector_cleanup(&psb_intel_connector->base);
	kfree(psb_intel_connector);
failed_connector:
	kfree(psb_intel_encoder);
	return;
}

/* initialize connector */
struct drm_connector *mdp4_lvds_connector_init(struct drm_device *dev,
		struct device_node *panel_node, struct drm_encoder *encoder)
{
	struct drm_connector *connector = NULL;
	struct mdp4_lvds_connector *mdp4_lvds_connector;

	mdp4_lvds_connector = kzalloc(sizeof(*mdp4_lvds_connector), GFP_KERNEL);
	if (!mdp4_lvds_connector)
		return ERR_PTR(-ENOMEM);

	mdp4_lvds_connector->encoder = encoder;
	mdp4_lvds_connector->panel_node = panel_node;

	connector = &mdp4_lvds_connector->base;

	drm_connector_init(dev, connector, &mdp4_lvds_connector_funcs,
			DRM_MODE_CONNECTOR_LVDS);
	drm_connector_helper_add(connector, &mdp4_lvds_connector_helper_funcs);

	connector->polled = 0;

	connector->interlace_allowed = 0;
	connector->doublescan_allowed = 0;

	drm_connector_attach_encoder(connector, encoder);

	return connector;
}

static struct drm_connector *
hibmc_connector_init(struct hibmc_drm_private *priv)
{
	struct drm_device *dev = priv->dev;
	struct drm_connector *connector;
	int ret;

	connector = devm_kzalloc(dev->dev, sizeof(*connector), GFP_KERNEL);
	if (!connector) {
		DRM_ERROR("failed to alloc memory when init connector\n");
		return ERR_PTR(-ENOMEM);
	}

	ret = drm_connector_init(dev, connector,
				 &hibmc_connector_funcs,
				 DRM_MODE_CONNECTOR_VGA);
	if (ret) {
		DRM_ERROR("failed to init connector: %d\n", ret);
		return ERR_PTR(ret);
	}
	drm_connector_helper_add(connector,
				 &hibmc_connector_helper_funcs);

	return connector;
}

static int imx_pd_register(struct drm_device *drm,
	struct imx_parallel_display *imxpd)
{
	int ret;

	ret = imx_drm_encoder_parse_of(drm, &imxpd->encoder,
				       imxpd->dev->of_node);
	if (ret)
		return ret;

	drm_encoder_helper_add(&imxpd->encoder, &imx_pd_encoder_helper_funcs);
	drm_encoder_init(drm, &imxpd->encoder, &imx_pd_encoder_funcs,
			 DRM_MODE_ENCODER_NONE);

	drm_connector_helper_add(&imxpd->connector,
			&imx_pd_connector_helper_funcs);
	drm_connector_init(drm, &imxpd->connector, &imx_pd_connector_funcs,
			   DRM_MODE_CONNECTOR_VGA);

	if (imxpd->panel)
		drm_panel_attach(imxpd->panel, &imxpd->connector);

	drm_mode_connector_attach_encoder(&imxpd->connector, &imxpd->encoder);

	imxpd->connector.encoder = &imxpd->encoder;

	return 0;
}

static int imx_hdmi_register(struct drm_device *drm, struct imx_hdmi *hdmi)
{
	int ret;

	ret = imx_drm_encoder_parse_of(drm, &hdmi->encoder,
				       hdmi->dev->of_node);
	if (ret)
		return ret;

	hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD;

	drm_encoder_helper_add(&hdmi->encoder, &imx_hdmi_encoder_helper_funcs);
	drm_encoder_init(drm, &hdmi->encoder, &imx_hdmi_encoder_funcs,
			 DRM_MODE_ENCODER_TMDS);

	drm_connector_helper_add(&hdmi->connector,
			&imx_hdmi_connector_helper_funcs);
	drm_connector_init(drm, &hdmi->connector, &imx_hdmi_connector_funcs,
			   DRM_MODE_CONNECTOR_HDMIA);

	hdmi->connector.encoder = &hdmi->encoder;

	drm_mode_connector_attach_encoder(&hdmi->connector, &hdmi->encoder);

	return 0;
}

static int imx_pd_register(struct drm_device *drm,
	struct imx_parallel_display *imxpd)
{
	int ret;

	ret = imx_drm_encoder_parse_of(drm, &imxpd->encoder,
				       imxpd->dev->of_node);
	if (ret)
		return ret;

	/* set the connector's dpms to OFF so that
	 * drm_helper_connector_dpms() won't return
	 * immediately since the current state is ON
	 * at this point.
	 */
	imxpd->connector.dpms = DRM_MODE_DPMS_OFF;

	drm_encoder_helper_add(&imxpd->encoder, &imx_pd_encoder_helper_funcs);
	drm_encoder_init(drm, &imxpd->encoder, &imx_pd_encoder_funcs,
			 DRM_MODE_ENCODER_NONE, NULL);

	drm_connector_helper_add(&imxpd->connector,
			&imx_pd_connector_helper_funcs);
	drm_connector_init(drm, &imxpd->connector, &imx_pd_connector_funcs,
			   DRM_MODE_CONNECTOR_VGA);

	if (imxpd->panel)
		drm_panel_attach(imxpd->panel, &imxpd->connector);

	drm_mode_connector_attach_encoder(&imxpd->connector, &imxpd->encoder);

	return 0;
}

static int exynos_dp_create_connector(struct exynos_drm_display *display,
				struct drm_encoder *encoder)
{
	struct exynos_dp_device *dp = display_to_dp(display);
	struct drm_connector *connector = &dp->connector;
	int ret;

	dp->encoder = encoder;

	/* Pre-empt DP connector creation if there's a bridge */
	ret = exynos_drm_attach_lcd_bridge(dp->drm_dev, encoder);
	if (ret)
		return 0;

	connector->polled = DRM_CONNECTOR_POLL_HPD;

	ret = drm_connector_init(dp->drm_dev, connector,
			&exynos_dp_connector_funcs, DRM_MODE_CONNECTOR_eDP);
	if (ret) {
		DRM_ERROR("Failed to initialize connector with drm\n");
		return ret;
	}

	drm_connector_helper_add(connector, &exynos_dp_connector_helper_funcs);
	drm_connector_register(connector);
	drm_mode_connector_attach_encoder(connector, encoder);

	if (dp->panel)
		ret = drm_panel_attach(dp->panel, &dp->connector);

	return ret;
}

/* initialize connector */
struct drm_connector *msm_edp_connector_init(struct msm_edp *edp)
{
	struct drm_connector *connector = NULL;
	struct edp_connector *edp_connector;
	int ret;

	edp_connector = kzalloc(sizeof(*edp_connector), GFP_KERNEL);
	if (!edp_connector)
		return ERR_PTR(-ENOMEM);

	edp_connector->edp = edp;

	connector = &edp_connector->base;

	ret = drm_connector_init(edp->dev, connector, &edp_connector_funcs,
			DRM_MODE_CONNECTOR_eDP);
	if (ret)
		return ERR_PTR(ret);

	drm_connector_helper_add(connector, &edp_connector_helper_funcs);

	/* We don't support HPD, so only poll status until connected. */
	connector->polled = DRM_CONNECTOR_POLL_CONNECT;

	/* Display driver doesn't support interlace now. */
	connector->interlace_allowed = false;
	connector->doublescan_allowed = false;

	drm_mode_connector_attach_encoder(connector, edp->encoder);

	return connector;
}

static int qdev_output_init(struct drm_device *dev, int num_output)
{
	struct qxl_device *qdev = dev->dev_private;
	struct qxl_output *qxl_output;
	struct drm_connector *connector;
	struct drm_encoder *encoder;

	qxl_output = kzalloc(sizeof(struct qxl_output), GFP_KERNEL);
	if (!qxl_output)
		return -ENOMEM;

	qxl_output->index = num_output;

	connector = &qxl_output->base;
	encoder = &qxl_output->enc;
	drm_connector_init(dev, &qxl_output->base,
			   &qxl_connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL);

	drm_encoder_init(dev, &qxl_output->enc, &qxl_enc_funcs,
			 DRM_MODE_ENCODER_VIRTUAL);

	/* we get HPD via client monitors config */
	connector->polled = DRM_CONNECTOR_POLL_HPD;
	encoder->possible_crtcs = 1 << num_output;
	drm_mode_connector_attach_encoder(&qxl_output->base,
					  &qxl_output->enc);
	drm_encoder_helper_add(encoder, &qxl_enc_helper_funcs);
	drm_connector_helper_add(connector, &qxl_connector_helper_funcs);

	drm_object_attach_property(&connector->base,
				   qdev->hotplug_mode_update_property, 0);
	drm_sysfs_connector_add(connector);
	return 0;
}

struct drm_connector *exynos_drm_connector_create(struct drm_device *dev,
						   struct drm_encoder *encoder)
{
	struct exynos_drm_connector *exynos_connector;
	struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
	struct drm_connector *connector;
	int type;
	int err;

	exynos_connector = kzalloc(sizeof(*exynos_connector), GFP_KERNEL);
	if (!exynos_connector)
		return NULL;

	connector = &exynos_connector->drm_connector;

	switch (manager->display_ops->type) {
	case EXYNOS_DISPLAY_TYPE_HDMI:
		type = DRM_MODE_CONNECTOR_HDMIA;
		connector->interlace_allowed = true;
		connector->polled = DRM_CONNECTOR_POLL_HPD;
		break;
	case EXYNOS_DISPLAY_TYPE_VIDI:
		type = DRM_MODE_CONNECTOR_VIRTUAL;
		connector->polled = DRM_CONNECTOR_POLL_HPD;
		break;
	default:
		type = DRM_MODE_CONNECTOR_Unknown;
		break;
	}

	drm_connector_init(dev, connector, &exynos_connector_funcs, type);
	drm_connector_helper_add(connector, &exynos_connector_helper_funcs);

	err = drm_sysfs_connector_add(connector);
	if (err)
		goto err_connector;

	exynos_connector->encoder_id = encoder->base.id;
	exynos_connector->manager = manager;
	exynos_connector->dpms = DRM_MODE_DPMS_OFF;
	connector->dpms = DRM_MODE_DPMS_OFF;
	connector->encoder = encoder;

	err = drm_mode_connector_attach_encoder(connector, encoder);
	if (err) {
		DRM_ERROR("failed to attach a connector to a encoder\n");
		goto err_sysfs;
	}

	DRM_DEBUG_KMS("connector has been created\n");

	return connector;

err_sysfs:
	drm_sysfs_connector_remove(connector);
err_connector:
	drm_connector_cleanup(connector);
	kfree(exynos_connector);
	return NULL;
}

static int rcar_lvds_attach(struct drm_bridge *bridge)
{
	struct rcar_lvds *lvds = bridge_to_rcar_lvds(bridge);
	struct drm_connector *connector = &lvds->connector;
	struct drm_encoder *encoder = bridge->encoder;
	int ret;

	/* If we have a next bridge just attach it. */
	if (lvds->next_bridge)
		return drm_bridge_attach(bridge->encoder, lvds->next_bridge,
					 bridge);

	/* Otherwise we have a panel, create a connector. */
	ret = drm_connector_init(bridge->dev, connector, &rcar_lvds_conn_funcs,
				 DRM_MODE_CONNECTOR_LVDS);
	if (ret < 0)
		return ret;

	drm_connector_helper_add(connector, &rcar_lvds_conn_helper_funcs);

	ret = drm_mode_connector_attach_encoder(connector, encoder);
	if (ret < 0)
		return ret;

	return drm_panel_attach(lvds->panel, connector);
}

static int dw_hdmi_register(struct drm_device *drm, struct dw_hdmi *hdmi)
{
	struct drm_encoder *encoder = hdmi->encoder;
	struct drm_bridge *bridge;
	int ret;

	bridge = devm_kzalloc(drm->dev, sizeof(*bridge), GFP_KERNEL);
	if (!bridge) {
		DRM_ERROR("Failed to allocate drm bridge\n");
		return -ENOMEM;
	}

	hdmi->bridge = bridge;
	bridge->driver_private = hdmi;
	bridge->funcs = &dw_hdmi_bridge_funcs;
	ret = drm_bridge_attach(drm, bridge);
	if (ret) {
		DRM_ERROR("Failed to initialize bridge with drm\n");
		return -EINVAL;
	}

	encoder->bridge = bridge;
	hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD;

	drm_connector_helper_add(&hdmi->connector,
				 &dw_hdmi_connector_helper_funcs);
	drm_connector_init(drm, &hdmi->connector, &dw_hdmi_connector_funcs,
			   DRM_MODE_CONNECTOR_HDMIA);

	hdmi->connector.encoder = encoder;

	drm_mode_connector_attach_encoder(&hdmi->connector, encoder);

	return 0;
}

/* initialize connector when we're connected to a drm_panel */
struct drm_connector *msm_dsi_manager_connector_init(u8 id)
{
	struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
	struct drm_connector *connector = NULL;
	struct dsi_connector *dsi_connector;
	int ret;

	dsi_connector = kzalloc(sizeof(*dsi_connector), GFP_KERNEL);
	if (!dsi_connector)
		return ERR_PTR(-ENOMEM);

	dsi_connector->id = id;

	connector = &dsi_connector->base;

	ret = drm_connector_init(msm_dsi->dev, connector,
			&dsi_mgr_connector_funcs, DRM_MODE_CONNECTOR_DSI);
	if (ret)
		return ERR_PTR(ret);

	drm_connector_helper_add(connector, &dsi_mgr_conn_helper_funcs);

	/* Enable HPD to let hpd event is handled
	 * when panel is attached to the host.
	 */
	connector->polled = DRM_CONNECTOR_POLL_HPD;

	/* Display driver doesn't support interlace now. */
	connector->interlace_allowed = 0;
	connector->doublescan_allowed = 0;

	drm_connector_attach_encoder(connector, msm_dsi->encoder);

	return connector;
}