[PATCH v4 11/23] drm/vc4: Provide ddc symlink in connector sysfs directory

[Andrzej Pietrasiewicz]

Use the ddc pointer provided by the generic connector.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p at collabora.com>
---
 drivers/gpu/drm/vc4/vc4_hdmi.c | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index ee7d4e7b0ee3..abacd48a1462 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -76,7 +76,6 @@ struct vc4_hdmi {
 
 	struct vc4_hdmi_audio audio;
 
-	struct i2c_adapter *ddc;
 	void __iomem *hdmicore_regs;
 	void __iomem *hd_regs;
 	int hpd_gpio;
@@ -207,7 +206,7 @@ vc4_hdmi_connector_detect(struct drm_connector *connector, bool force)
 		return connector_status_disconnected;
 	}
 
-	if (drm_probe_ddc(vc4->hdmi->ddc))
+	if (drm_probe_ddc(connector->ddc))
 		return connector_status_connected;
 
 	if (HDMI_READ(VC4_HDMI_HOTPLUG) & VC4_HDMI_HOTPLUG_CONNECTED)
@@ -233,7 +232,7 @@ static int vc4_hdmi_connector_get_modes(struct drm_connector *connector)
 	int ret = 0;
 	struct edid *edid;
 
-	edid = drm_get_edid(connector, vc4->hdmi->ddc);
+	edid = drm_get_edid(connector, connector->ddc);
 	cec_s_phys_addr_from_edid(vc4->hdmi->cec_adap, edid);
 	if (!edid)
 		return -ENODEV;
@@ -267,7 +266,8 @@ static const struct drm_connector_helper_funcs vc4_hdmi_connector_helper_funcs =
 };
 
 static struct drm_connector *vc4_hdmi_connector_init(struct drm_device *dev,
-						     struct drm_encoder *encoder)
+						     struct drm_encoder *encoder,
+						     struct i2c_adapter *ddc)
 {
 	struct drm_connector *connector;
 	struct vc4_hdmi_connector *hdmi_connector;
@@ -280,6 +280,7 @@ static struct drm_connector *vc4_hdmi_connector_init(struct drm_device *dev,
 	connector = &hdmi_connector->base;
 
 	hdmi_connector->encoder = encoder;
+	connector->ddc = ddc;
 
 	drm_connector_init(dev, connector, &vc4_hdmi_connector_funcs,
 			   DRM_MODE_CONNECTOR_HDMIA);
@@ -1291,6 +1292,7 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
 	struct vc4_hdmi *hdmi;
 	struct vc4_hdmi_encoder *vc4_hdmi_encoder;
 	struct device_node *ddc_node;
+	struct i2c_adapter *ddc;
 	u32 value;
 	int ret;
 
@@ -1338,9 +1340,9 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
 		return -ENODEV;
 	}
 
-	hdmi->ddc = of_find_i2c_adapter_by_node(ddc_node);
+	ddc = of_find_i2c_adapter_by_node(ddc_node);
 	of_node_put(ddc_node);
-	if (!hdmi->ddc) {
+	if (ddc) {
 		DRM_DEBUG("Failed to get ddc i2c adapter by node\n");
 		return -EPROBE_DEFER;
 	}
@@ -1395,7 +1397,7 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
 			 DRM_MODE_ENCODER_TMDS, NULL);
 	drm_encoder_helper_add(hdmi->encoder, &vc4_hdmi_encoder_helper_funcs);
 
-	hdmi->connector = vc4_hdmi_connector_init(drm, hdmi->encoder);
+	hdmi->connector = vc4_hdmi_connector_init(drm, hdmi->encoder, ddc);
 	if (IS_ERR(hdmi->connector)) {
 		ret = PTR_ERR(hdmi->connector);
 		goto err_destroy_encoder;
@@ -1452,7 +1454,7 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
 	clk_disable_unprepare(hdmi->hsm_clock);
 	pm_runtime_disable(dev);
 err_put_i2c:
-	put_device(&hdmi->ddc->dev);
+	put_device(&ddc->dev);
 
 	return ret;
 }
@@ -1463,6 +1465,7 @@ static void vc4_hdmi_unbind(struct device *dev, struct device *master,
 	struct drm_device *drm = dev_get_drvdata(master);
 	struct vc4_dev *vc4 = drm->dev_private;
 	struct vc4_hdmi *hdmi = vc4->hdmi;
+	struct i2c_adapter *ddc = hdmi->connector->ddc;
 
 	cec_unregister_adapter(hdmi->cec_adap);
 	vc4_hdmi_connector_destroy(hdmi->connector);
@@ -1471,7 +1474,7 @@ static void vc4_hdmi_unbind(struct device *dev, struct device *master,
 	clk_disable_unprepare(hdmi->hsm_clock);
 	pm_runtime_disable(dev);
 
-	put_device(&hdmi->ddc->dev);
+	put_device(&ddc->dev);
 
 	vc4->hdmi = NULL;
 }
-- 
2.17.1