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| author | Antti Palosaari <crope@iki.fi> | 2008-09-15 19:34:31 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-10-12 13:37:02 +0200 |
| commit | 6e623433f7f566d8aca64c519a19c2f7bbb686be (patch) | |
| tree | ac108a7fa65cd15560387d9c4e6b6a691254cfb3 /drivers/media/common | |
| parent | V4L/DVB (8968): replace xc3028 firmware filenames with defined default firmwa... (diff) | |
| download | linux-6e623433f7f566d8aca64c519a19c2f7bbb686be.tar.xz linux-6e623433f7f566d8aca64c519a19c2f7bbb686be.zip | |
V4L/DVB (8970): mt2060: implement I2C-gate control
- implement I2C-gate control
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/common')
| -rw-r--r-- | drivers/media/common/tuners/mt2060.c | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/drivers/media/common/tuners/mt2060.c b/drivers/media/common/tuners/mt2060.c index 1305b0e63ce5..12206d75dd4e 100644 --- a/drivers/media/common/tuners/mt2060.c +++ b/drivers/media/common/tuners/mt2060.c @@ -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); |