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V4L/DVB (7227): saa7134: fixed DVB-S support for Medion/Creatix CTX948 

The I2C bus interface of the LNB supply sits behind the i2c gate of the
tda10086, so wrappers were necessary for the set_voltage functions.

For the time being, the board will show up as MD8800

Many thanks to Hermann Pitton for his help

Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Hartmut Hackmann 2008-04-22 14:42:12 -03:00 committed by Mauro Carvalho Chehab
parent 6ab465a821
commit 1b1cee35de
2 changed files with 47 additions and 2 deletions
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45
drivers/media/video/saa7134/saa7134-dvb.c
View File

@ -846,6 +846,36 @@ static struct tda10086_config flydvbs = {
.diseqc_tone = 0,
};
/* ------------------------------------------------------------------
* special case: lnb supply is connected to the gated i2c
*/
static int md8800_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
{
int res = -EIO;
struct saa7134_dev *dev = fe->dvb->priv;
if (fe->ops.i2c_gate_ctrl) {
fe->ops.i2c_gate_ctrl(fe, 1);
if (dev->original_set_voltage)
res = dev->original_set_voltage(fe, voltage);
fe->ops.i2c_gate_ctrl(fe, 0);
}
return res;
};
static int md8800_set_high_voltage(struct dvb_frontend *fe, long arg)
{
int res = -EIO;
struct saa7134_dev *dev = fe->dvb->priv;
if (fe->ops.i2c_gate_ctrl) {
fe->ops.i2c_gate_ctrl(fe, 1);
if (dev->original_set_high_voltage)
res = dev->original_set_high_voltage(fe, arg);
fe->ops.i2c_gate_ctrl(fe, 0);
}
return res;
};
/* ==================================================================
* nxt200x based ATSC cards, helper functions
*/
@ -998,14 +1028,27 @@ static int dvb_init(struct saa7134_dev *dev)
dev->dvb.frontend = dvb_attach(tda10086_attach,
&flydvbs, &dev->i2c_adap);
if (dev->dvb.frontend) {
struct dvb_frontend *fe;
if (dvb_attach(tda826x_attach, dev->dvb.frontend,
0x60, &dev->i2c_adap, 0) == NULL)
wprintk("%s: Medion Quadro, no tda826x "
"found !\n", __FUNCTION__);
if (dvb_attach(isl6405_attach, dev->dvb.frontend,
/* Note 10.2. Hac
* up to here. configuration for ctx948 and and one branch
* of md8800 should be identical
*/
/* we need to open the i2c gate (we know it exists) */
fe = dev->dvb.frontend;
fe->ops.i2c_gate_ctrl(fe, 1);
if (dvb_attach(isl6405_attach, fe,
&dev->i2c_adap, 0x08, 0, 0) == NULL)
wprintk("%s: Medion Quadro, no ISL6405 "
"found !\n", __FUNCTION__);
fe->ops.i2c_gate_ctrl(fe, 0);
dev->original_set_voltage = fe->ops.set_voltage;
fe->ops.set_voltage = md8800_set_voltage;
dev->original_set_high_voltage = fe->ops.enable_high_lnb_voltage;
fe->ops.enable_high_lnb_voltage = md8800_set_high_voltage;
}
}
break;

2
drivers/media/video/saa7134/saa7134.h
View File

@ -558,6 +558,8 @@ struct saa7134_dev {
/* SAA7134_MPEG_DVB only */
struct videobuf_dvb dvb;
int (*original_demod_sleep)(struct dvb_frontend *fe);
int (*original_set_voltage)(struct dvb_frontend *fe, fe_sec_voltage_t voltage);
int (*original_set_high_voltage)(struct dvb_frontend *fe, long arg);
#endif
};