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[7/7] cx231xx: Add second i2c demod to Hauppauge 975

Message ID 1515773982-6411-8-git-send-email-brad@nextdimension.cc (mailing list archive)
State New, archived
Headers show

Commit Message

Brad Love Jan. 12, 2018, 4:19 p.m. UTC 
Hauppauge HVR-975 is a dual frontend, single tuner USB device. It contains
lgdt3306a and si2168 frontends and one si2157 tuner. The lgdt3306a frontend
is currently enabled. This creates the second demodulator and attaches it
to the tuner.

Enables lgdt3306a|si2168 + si2157

Signed-off-by: Brad Love <brad@nextdimension.cc>
---
 drivers/media/usb/cx231xx/cx231xx-cards.c |  1 +
 drivers/media/usb/cx231xx/cx231xx-dvb.c   | 50 +++++++++++++++++++++++++++++--
 2 files changed, 48 insertions(+), 3 deletions(-)
diff mbox

Patch

diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c b/drivers/media/usb/cx231xx/cx231xx-cards.c
index 8582568..00e88a8f 100644
--- a/drivers/media/usb/cx231xx/cx231xx-cards.c
+++ b/drivers/media/usb/cx231xx/cx231xx-cards.c
@@ -979,6 +979,7 @@  struct cx231xx_board cx231xx_boards[] = {
 		.demod_i2c_master = I2C_1_MUX_3,
 		.has_dvb = 1,
 		.demod_addr = 0x59, /* 0xb2 >> 1 */
+		.demod_addr2 = 0x64, /* 0xc8 >> 1 */
 		.norm = V4L2_STD_ALL,
 
 		.input = {{
diff --git a/drivers/media/usb/cx231xx/cx231xx-dvb.c b/drivers/media/usb/cx231xx/cx231xx-dvb.c
index 7201e14..7c947ca 100644
--- a/drivers/media/usb/cx231xx/cx231xx-dvb.c
+++ b/drivers/media/usb/cx231xx/cx231xx-dvb.c
@@ -1173,14 +1173,17 @@  static int dvb_init(struct cx231xx *dev)
 	{
 		struct i2c_client *client;
 		struct i2c_adapter *adapter;
+		struct i2c_adapter *adapter2;
 		struct i2c_board_info info = {};
 		struct si2157_config si2157_config = {};
 		struct lgdt3306a_config lgdt3306a_config = {};
+		struct si2168_config si2168_config = {};
 
-		/* attach demodulator chip */
+		/* attach first demodulator chip */
 		lgdt3306a_config = hauppauge_955q_lgdt3306a_config;
 		lgdt3306a_config.fe = &dev->dvb->frontend[0];
 		lgdt3306a_config.i2c_adapter = &adapter;
+		lgdt3306a_config.deny_i2c_rptr = 0;
 
 		strlcpy(info.type, "lgdt3306a", sizeof(info.type));
 		info.addr = dev->board.demod_addr;
@@ -1202,10 +1205,39 @@  static int dvb_init(struct cx231xx *dev)
 		}
 
 		dvb->i2c_client_demod[0] = client;
-		dev->dvb->frontend[0]->ops.i2c_gate_ctrl = NULL;
+
+		/* attach second demodulator chip */
+		si2168_config.ts_mode = SI2168_TS_SERIAL;
+		si2168_config.fe = &dev->dvb->frontend[1];
+		si2168_config.i2c_adapter = &adapter2;
+		si2168_config.ts_clock_inv = true;
+
+		memset(&info, 0, sizeof(struct i2c_board_info));
+		strlcpy(info.type, "si2168", sizeof(info.type));
+		info.addr = dev->board.demod_addr2;
+		info.platform_data = &si2168_config;
+
+		request_module(info.type);
+		client = i2c_new_device(adapter, &info);
+		if (client == NULL || client->dev.driver == NULL) {
+			result = -ENODEV;
+			goto out_free;
+		}
+
+		if (!try_module_get(client->dev.driver->owner)) {
+			dev_err(dev->dev,
+				"Failed to attach %s frontend.\n", info.type);
+			i2c_unregister_device(client);
+			result = -ENODEV;
+			goto out_free;
+		}
+
+		dvb->i2c_client_demod[1] = client;
+		dev->dvb->frontend[1]->id = 1;
 
 		/* define general-purpose callback pointer */
 		dvb->frontend[0]->callback = cx231xx_tuner_callback;
+		dvb->frontend[1]->callback = cx231xx_tuner_callback;
 
 		/* attach tuner */
 		si2157_config.fe = dev->dvb->frontend[0];
@@ -1221,8 +1253,10 @@  static int dvb_init(struct cx231xx *dev)
 		info.platform_data = &si2157_config;
 		request_module("si2157");
 
-		client = i2c_new_device(tuner_i2c, &info);
+		client = i2c_new_device(adapter, &info);
 		if (client == NULL || client->dev.driver == NULL) {
+			module_put(dvb->i2c_client_demod[1]->dev.driver->owner);
+			i2c_unregister_device(dvb->i2c_client_demod[1]);
 			module_put(dvb->i2c_client_demod[0]->dev.driver->owner);
 			i2c_unregister_device(dvb->i2c_client_demod[0]);
 			result = -ENODEV;
@@ -1233,6 +1267,8 @@  static int dvb_init(struct cx231xx *dev)
 			dev_err(dev->dev,
 				"Failed to obtain %s tuner.\n",	info.type);
 			i2c_unregister_device(client);
+			module_put(dvb->i2c_client_demod[1]->dev.driver->owner);
+			i2c_unregister_device(dvb->i2c_client_demod[1]);
 			module_put(dvb->i2c_client_demod[0]->dev.driver->owner);
 			i2c_unregister_device(dvb->i2c_client_demod[0]);
 			result = -ENODEV;
@@ -1241,6 +1277,14 @@  static int dvb_init(struct cx231xx *dev)
 
 		dev->cx231xx_reset_analog_tuner = NULL;
 		dev->dvb->i2c_client_tuner = client;
+
+		dev->dvb->frontend[1]->tuner_priv =
+			dev->dvb->frontend[0]->tuner_priv;
+
+		dvb_attach(si2157_attach, dev->dvb->frontend[1],
+			dev->board.tuner_addr, adapter,
+			&si2157_config);
+
 		break;
 	}
 	default: