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Commit 976bcb2f authored by Antti Palosaari's avatar Antti Palosaari Committed by Mauro Carvalho Chehab
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[media] tda18212: add support for slave chip version 



There is 2 different versions of that chip available, master and
slave. Slave is used only on dual tuner devices with master tuner.
Laser printing top of chip is 18212/M or 18212/S according to chip
version.

Signed-off-by: default avatarAntti Palosaari <crope@iki.fi>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent 8e417224

drivers/media/tuners/tda18212.c

+22 −9
Original line number Diff line number Diff line
@@ -306,7 +306,8 @@ struct dvb_frontend *tda18212_attach(struct dvb_frontend *fe, 
{

	struct tda18212_priv *priv = NULL;

	int ret;

	u8 val;

	u8 chip_id = chip_id;

	char *version;



	priv = kzalloc(sizeof(struct tda18212_priv), GFP_KERNEL);

	if (priv == NULL)
@@ -320,26 +321,38 @@ struct dvb_frontend *tda18212_attach(struct dvb_frontend *fe, 
		fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */



	/* check if the tuner is there */

	ret = tda18212_rd_reg(priv, 0x00, &val);

	ret = tda18212_rd_reg(priv, 0x00, &chip_id);

	dev_dbg(&priv->i2c->dev, "%s: chip_id=%02x\n", __func__, chip_id);



	if (fe->ops.i2c_gate_ctrl)

		fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */



	if (!ret)

		dev_dbg(&priv->i2c->dev, "%s: chip id=%02x\n", __func__, val);

	if (ret || val != 0xc7) {

		kfree(priv);

		return NULL;

	if (ret)

		goto err;



	switch (chip_id) {

	case 0xc7:

		version = "M"; /* master */

		break;

	case 0x47:

		version = "S"; /* slave */

		break;

	default:

		goto err;

	}



	dev_info(&priv->i2c->dev,

			"%s: NXP TDA18212HN successfully identified\n",

			KBUILD_MODNAME);

			"%s: NXP TDA18212HN/%s successfully identified\n",

			KBUILD_MODNAME, version);



	memcpy(&fe->ops.tuner_ops, &tda18212_tuner_ops,

		sizeof(struct dvb_tuner_ops));



	return fe;

err:

	dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret);

	kfree(priv);

	return NULL;

}

EXPORT_SYMBOL(tda18212_attach);