[PATCH 3/3] drm/bridge/adv7511: enable CEC connector info

[Hans Verkuil]

Set the connector info to help userspace associate the CEC adapter
with the HDMI connector.

This required that the cec initialization and unregistering the
CEC adapter takes place in the bridge attach and detach ops.

Tested on an R-Car Koelsch board.

Signed-off-by: Hans Verkuil <hverkuil-cisco at xs4all.nl>
Tested-by: Hans Verkuil <hverkuil-cisco at xs4all.nl>
---
 drivers/gpu/drm/bridge/adv7511/adv7511_cec.c |  7 ++++++-
 drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 22 ++++++++++----------
 2 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_cec.c b/drivers/gpu/drm/bridge/adv7511/adv7511_cec.c
index a20a45c0b353..accf5e232396 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_cec.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_cec.c
@@ -302,6 +302,7 @@ static int adv7511_cec_parse_dt(struct device *dev, struct adv7511 *adv7511)
 
 int adv7511_cec_init(struct device *dev, struct adv7511 *adv7511)
 {
+	struct cec_connector_info conn_info;
 	unsigned int offset = adv7511->type == ADV7533 ?
 						ADV7533_REG_CEC_OFFSET : 0;
 	int ret = adv7511_cec_parse_dt(dev, adv7511);
@@ -310,7 +311,8 @@ int adv7511_cec_init(struct device *dev, struct adv7511 *adv7511)
 		goto err_cec_parse_dt;
 
 	adv7511->cec_adap = cec_allocate_adapter(&adv7511_cec_adap_ops,
-		adv7511, dev_name(dev), CEC_CAP_DEFAULTS, ADV7511_MAX_ADDRS);
+		adv7511, dev_name(dev),
+		CEC_CAP_DEFAULTS | CEC_CAP_CONNECTOR_INFO, ADV7511_MAX_ADDRS);
 	if (IS_ERR(adv7511->cec_adap)) {
 		ret = PTR_ERR(adv7511->cec_adap);
 		goto err_cec_alloc;
@@ -331,6 +333,9 @@ int adv7511_cec_init(struct device *dev, struct adv7511 *adv7511)
 		     ADV7511_REG_CEC_CLK_DIV + offset,
 		     ((adv7511->cec_clk_freq / 750000) - 1) << 2);
 
+	cec_fill_conn_info_from_drm(&conn_info, &adv7511->connector);
+	cec_s_conn_info(adv7511->cec_adap, &conn_info);
+
 	ret = cec_register_adapter(adv7511->cec_adap, dev);
 	if (ret)
 		goto err_cec_register;
diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
index f6d2681f6927..bbcb996c4d4f 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
@@ -881,14 +881,24 @@ static int adv7511_bridge_attach(struct drm_bridge *bridge)
 		regmap_write(adv->regmap, ADV7511_REG_INT_ENABLE(0),
 			     ADV7511_INT0_HPD);
 
+	if (!ret)
+		ret = adv7511_cec_init(&adv->i2c_main->dev, adv);
 	return ret;
 }
 
+static void adv7511_bridge_detach(struct drm_bridge *bridge)
+{
+	struct adv7511 *adv = bridge_to_adv7511(bridge);
+
+	cec_unregister_adapter(adv->cec_adap);
+}
+
 static const struct drm_bridge_funcs adv7511_bridge_funcs = {
 	.enable = adv7511_bridge_enable,
 	.disable = adv7511_bridge_disable,
 	.mode_set = adv7511_bridge_mode_set,
 	.attach = adv7511_bridge_attach,
+	.detach = adv7511_bridge_detach,
 };
 
 /* -----------------------------------------------------------------------------
@@ -1202,7 +1212,7 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
 						IRQF_ONESHOT, dev_name(dev),
 						adv7511);
 		if (ret)
-			goto err_unregister_cec;
+			goto err_i2c_unregister_packet;
 	}
 
 	adv7511_power_off(adv7511);
@@ -1212,10 +1222,6 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
 	if (adv7511->type == ADV7511)
 		adv7511_set_link_config(adv7511, &link_config);
 
-	ret = adv7511_cec_init(dev, adv7511);
-	if (ret)
-		goto err_unregister_cec;
-
 	adv7511->bridge.funcs = &adv7511_bridge_funcs;
 	adv7511->bridge.of_node = dev->of_node;
 
@@ -1224,10 +1230,6 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
 	adv7511_audio_init(dev, adv7511);
 	return 0;
 
-err_unregister_cec:
-	i2c_unregister_device(adv7511->i2c_cec);
-	if (adv7511->cec_clk)
-		clk_disable_unprepare(adv7511->cec_clk);
 err_i2c_unregister_packet:
 	i2c_unregister_device(adv7511->i2c_packet);
 err_i2c_unregister_edid:
@@ -1254,8 +1256,6 @@ static int adv7511_remove(struct i2c_client *i2c)
 
 	adv7511_audio_exit(adv7511);
 
-	cec_unregister_adapter(adv7511->cec_adap);
-
 	i2c_unregister_device(adv7511->i2c_packet);
 	i2c_unregister_device(adv7511->i2c_edid);
 
-- 
2.20.1