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V4L/DVB (8970): mt2060: implement I2C-gate control

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- implement I2C-gate control

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Antti Palosaari 2008-09-15 14:34:31 -03:00 committed by Mauro Carvalho Chehab
parent ef80bfeb30
commit 6e623433f7
1 changed files with 36 additions and 2 deletions
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38
drivers/media/common/tuners/mt2060.c
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@ -170,6 +170,9 @@ static int mt2060_set_params(struct dvb_frontend *fe, struct dvb_frontend_parame
b[0] = REG_LO1B1;
b[1] = 0xFF;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
mt2060_writeregs(priv,b,2);
freq = params->frequency / 1000; // Hz -> kHz
@ -233,6 +236,9 @@ static int mt2060_set_params(struct dvb_frontend *fe, struct dvb_frontend_parame
i++;
} while (i<10);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
return ret;
}
@ -296,13 +302,35 @@ static int mt2060_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
static int mt2060_init(struct dvb_frontend *fe)
{
struct mt2060_priv *priv = fe->tuner_priv;
return mt2060_writereg(priv, REG_VGAG, (priv->cfg->clock_out << 6) | 0x33);
int ret;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
ret = mt2060_writereg(priv, REG_VGAG,
(priv->cfg->clock_out << 6) | 0x33);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
return ret;
}
static int mt2060_sleep(struct dvb_frontend *fe)
{
struct mt2060_priv *priv = fe->tuner_priv;
return mt2060_writereg(priv, REG_VGAG, (priv->cfg->clock_out << 6) | 0x30);
int ret;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
ret = mt2060_writereg(priv, REG_VGAG,
(priv->cfg->clock_out << 6) | 0x30);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
return ret;
}
static int mt2060_release(struct dvb_frontend *fe)
@ -344,6 +372,9 @@ struct dvb_frontend * mt2060_attach(struct dvb_frontend *fe, struct i2c_adapter
priv->i2c = i2c;
priv->if1_freq = if1;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
if (mt2060_readreg(priv,REG_PART_REV,&id) != 0) {
kfree(priv);
return NULL;
@ -360,6 +391,9 @@ struct dvb_frontend * mt2060_attach(struct dvb_frontend *fe, struct i2c_adapter
mt2060_calibrate(priv);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
return fe;
}
EXPORT_SYMBOL(mt2060_attach);