Kernel/linux-next
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git synced 2025-01-09 23:39:18 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

[media] tda18212: add support for slave chip version

Browse Source 
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: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Antti Palosaari 2014-07-31 16:35:56 -03:00 committed by Mauro Carvalho Chehab
parent 8e417224df
commit 976bcb2f6f
1 changed files with 22 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
drivers/media/tuners/tda18212.c
View File

@ -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);