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[media] tua9001: implement control pin callbacks

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There is three pins used for controlling that tuner.
Implement those using frontend callback.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Antti Palosaari 2012-09-11 22:27:07 -03:00 committed by Mauro Carvalho Chehab
parent 1835af1003
commit 89054e37a8
2 changed files with 81 additions and 5 deletions
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66
drivers/media/tuners/tua9001.c
View File

@ -49,10 +49,17 @@ static int tua9001_wr_reg(struct tua9001_priv *priv, u8 reg, u16 val)
static int tua9001_release(struct dvb_frontend *fe)
{
struct tua9001_priv *priv = fe->tuner_priv;
int ret = 0;
if (fe->callback)
ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
TUA9001_CMD_CEN, 0);
kfree(fe->tuner_priv);
fe->tuner_priv = NULL;
return 0;
return ret;
}
static int tua9001_init(struct dvb_frontend *fe)
@ -78,17 +85,40 @@ static int tua9001_init(struct dvb_frontend *fe)
{ 0x34, 0x0a40 },
};
if (fe->callback) {
ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
TUA9001_CMD_RESETN, 0);
if (ret < 0)
goto err;
}
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c-gate */
for (i = 0; i < ARRAY_SIZE(data); i++) {
ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
if (ret)
break;
if (ret < 0)
goto err_i2c_gate_ctrl;
}
err_i2c_gate_ctrl:
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c-gate */
err:
if (ret < 0)
pr_debug("%s: failed=%d\n", __func__, ret);
return ret;
}
static int tua9001_sleep(struct dvb_frontend *fe)
{
struct tua9001_priv *priv = fe->tuner_priv;
int ret = 0;
if (fe->callback)
ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
TUA9001_CMD_RESETN, 1);
if (ret < 0)
pr_debug("%s: failed=%d\n", __func__, ret);
@ -148,15 +178,29 @@ static int tua9001_set_params(struct dvb_frontend *fe)
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c-gate */
if (fe->callback) {
ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
TUA9001_CMD_RXEN, 0);
if (ret < 0)
goto err_i2c_gate_ctrl;
}
for (i = 0; i < ARRAY_SIZE(data); i++) {
ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
if (ret < 0)
break;
goto err_i2c_gate_ctrl;
}
if (fe->callback) {
ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
TUA9001_CMD_RXEN, 1);
if (ret < 0)
goto err_i2c_gate_ctrl;
}
err_i2c_gate_ctrl:
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c-gate */
err:
if (ret < 0)
pr_debug("%s: failed=%d\n", __func__, ret);
@ -183,6 +227,7 @@ static const struct dvb_tuner_ops tua9001_tuner_ops = {
.release = tua9001_release,
.init = tua9001_init,
.sleep = tua9001_sleep,
.set_params = tua9001_set_params,
.get_if_frequency = tua9001_get_if_frequency,
@ -192,6 +237,7 @@ struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c, struct tua9001_config *cfg)
{
struct tua9001_priv *priv = NULL;
int ret;
priv = kzalloc(sizeof(struct tua9001_priv), GFP_KERNEL);
if (priv == NULL)
@ -200,6 +246,13 @@ struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
priv->cfg = cfg;
priv->i2c = i2c;
if (fe->callback) {
ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
TUA9001_CMD_CEN, 1);
if (ret < 0)
goto err;
}
printk(KERN_INFO "Infineon TUA 9001 successfully attached.");
memcpy(&fe->ops.tuner_ops, &tua9001_tuner_ops,
@ -207,6 +260,9 @@ struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
fe->tuner_priv = priv;
return fe;
err:
kfree(priv);
return NULL;
}
EXPORT_SYMBOL(tua9001_attach);

20
drivers/media/tuners/tua9001.h
View File

@ -30,6 +30,26 @@ struct tua9001_config {
u8 i2c_addr;
};
/*
* TUA9001 I/O PINs:
*
* CEN - chip enable
* 0 = chip disabled (chip off)
* 1 = chip enabled (chip on)
*
* RESETN - chip reset
* 0 = reset disabled (chip reset off)
* 1 = reset enabled (chip reset on)
*
* RXEN - RX enable
* 0 = RX disabled (chip idle)
* 1 = RX enabled (chip tuned)
*/
#define TUA9001_CMD_CEN 0
#define TUA9001_CMD_RESETN 1
#define TUA9001_CMD_RXEN 2
#if defined(CONFIG_MEDIA_TUNER_TUA9001) || \
(defined(CONFIG_MEDIA_TUNER_TUA9001_MODULE) && defined(MODULE))
extern struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,