[PATCH v7 3/3] drm/i2c: tda9950: pass HDMI connector info to CEC adapter

[Dariusz Marcinkiewicz <darekm@google.com>]

With that change tda998x provides a connector info to the CEC
adapter. In order to be able to that it delays creation of
respective CEC device until the DRM connector is initialized.

Requires testing.

Signed-off-by: Dariusz Marcinkiewicz <darekm@google.com>
---
 drivers/gpu/drm/i2c/tda9950.c     | 13 +++++---
 drivers/gpu/drm/i2c/tda998x_drv.c | 55 ++++++++++++++++---------------
 2 files changed, 36 insertions(+), 32 deletions(-)

diff --git a/drivers/gpu/drm/i2c/tda9950.c b/drivers/gpu/drm/i2c/tda9950.c
index b944dd9df85e1..61ec50a2ca275 100644
--- a/drivers/gpu/drm/i2c/tda9950.c
+++ b/drivers/gpu/drm/i2c/tda9950.c
@@ -382,6 +382,7 @@ static int tda9950_probe(struct i2c_client *client,
 			 const struct i2c_device_id *id)
 {
 	struct tda9950_glue *glue = client->dev.platform_data;
+	const struct cec_connector_info *conn_info;
 	struct device *dev = &client->dev;
 	struct tda9950_priv *priv;
 	unsigned long irqflags;
@@ -422,10 +423,16 @@ static int tda9950_probe(struct i2c_client *client,
 	if (glue && glue->parent)
 		priv->hdmi = glue->parent;
 
+	priv->notify = cec_notifier_get(priv->hdmi);
+	if (!priv->notify)
+		return -ENOMEM;
+
+	conn_info = cec_notifier_get_conn_info(priv->notify);
+
 	priv->adap = cec_allocate_adapter(&tda9950_cec_ops, priv, "tda9950",
 					  CEC_CAP_DEFAULTS,
 					  CEC_MAX_LOG_ADDRS,
-					  NULL);
+					  conn_info);
 	if (IS_ERR(priv->adap))
 		return PTR_ERR(priv->adap);
 
@@ -461,10 +468,6 @@ static int tda9950_probe(struct i2c_client *client,
 	if (ret < 0)
 		return ret;
 
-	priv->notify = cec_notifier_get(priv->hdmi);
-	if (!priv->notify)
-		return -ENOMEM;
-
 	ret = cec_register_adapter(priv->adap, priv->hdmi);
 	if (ret < 0) {
 		cec_notifier_put(priv->notify);
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index 7f34601bb5155..b1d76e6561e30 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -1253,6 +1253,8 @@ static int tda998x_connector_init(struct tda998x_priv *priv,
 				  struct drm_device *drm)
 {
 	struct drm_connector *connector = &priv->connector;
+	struct cec_connector_info conn_info;
+	struct i2c_board_info cec_info;
 	int ret;
 
 	connector->interlace_allowed = 1;
@@ -1269,6 +1271,32 @@ static int tda998x_connector_init(struct tda998x_priv *priv,
 	if (ret)
 		return ret;
 
+	/*
+	 * Some TDA998x are actually two I2C devices merged onto one piece
+	 * of silicon: TDA9989 and TDA19989 combine the HDMI transmitter
+	 * with a slightly modified TDA9950 CEC device.  The CEC device
+	 * is at the TDA9950 address, with the address pins strapped across
+	 * to the TDA998x address pins.  Hence, it always has the same
+	 * offset.
+	 */
+	memset(&cec_info, 0, sizeof(cec_info));
+	strlcpy(cec_info.type, "tda9950", sizeof(cec_info.type));
+	cec_info.addr = priv->cec_addr;
+	cec_info.platform_data = &priv->cec_glue;
+	cec_info.irq = priv->hdmi->irq;
+
+	priv->cec = i2c_new_device(priv->hdmi->adapter, &cec_info);
+	if (!priv->cec)
+		return -ENODEV;
+
+	cec_fill_connector_info(&conn_info, connector);
+
+	priv->cec_notify = cec_notifier_get_conn(priv->cec_glue.parent,
+						 NULL, &conn_info);
+	if (!priv->cec_notify)
+		return -ENOMEM;
+
+
 	drm_connector_attach_encoder(&priv->connector,
 				     priv->bridge.encoder);
 
@@ -1658,7 +1686,6 @@ static int tda998x_create(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct device_node *np = client->dev.of_node;
-	struct i2c_board_info cec_info;
 	struct tda998x_priv *priv;
 	u32 video;
 	int rev_lo, rev_hi, ret;
@@ -1776,12 +1803,6 @@ static int tda998x_create(struct device *dev)
 		cec_write(priv, REG_CEC_RXSHPDINTENA, CEC_RXSHPDLEV_HPD);
 	}
 
-	priv->cec_notify = cec_notifier_get(dev);
-	if (!priv->cec_notify) {
-		ret = -ENOMEM;
-		goto fail;
-	}
-
 	priv->cec_glue.parent = dev;
 	priv->cec_glue.data = priv;
 	priv->cec_glue.init = tda998x_cec_hook_init;
@@ -1789,26 +1810,6 @@ static int tda998x_create(struct device *dev)
 	priv->cec_glue.open = tda998x_cec_hook_open;
 	priv->cec_glue.release = tda998x_cec_hook_release;
 
-	/*
-	 * Some TDA998x are actually two I2C devices merged onto one piece
-	 * of silicon: TDA9989 and TDA19989 combine the HDMI transmitter
-	 * with a slightly modified TDA9950 CEC device.  The CEC device
-	 * is at the TDA9950 address, with the address pins strapped across
-	 * to the TDA998x address pins.  Hence, it always has the same
-	 * offset.
-	 */
-	memset(&cec_info, 0, sizeof(cec_info));
-	strlcpy(cec_info.type, "tda9950", sizeof(cec_info.type));
-	cec_info.addr = priv->cec_addr;
-	cec_info.platform_data = &priv->cec_glue;
-	cec_info.irq = client->irq;
-
-	priv->cec = i2c_new_device(client->adapter, &cec_info);
-	if (!priv->cec) {
-		ret = -ENODEV;
-		goto fail;
-	}
-
 	/* enable EDID read irq: */
 	reg_set(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD);
 
-- 
2.18.1