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Commit 6e623433 authored by Antti Palosaari's avatar Antti Palosaari Committed by Mauro Carvalho Chehab
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V4L/DVB (8970): mt2060: implement I2C-gate control 



- implement I2C-gate control

Signed-off-by: default avatarAntti Palosaari <crope@iki.fi>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent ef80bfeb

drivers/media/common/tuners/mt2060.c

+36 −2
Original line number Diff line number Diff line
@@ -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);