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>
diff --git a/drivers/media/video/saa7134/saa7134-dvb.c b/drivers/media/video/saa7134/saa7134-dvb.c
index 5d20ec0..180d319 100644
--- a/drivers/media/video/saa7134/saa7134-dvb.c
+++ b/drivers/media/video/saa7134/saa7134-dvb.c
@@ -846,6 +846,36 @@
.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 @@
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;
diff --git a/drivers/media/video/saa7134/saa7134.h b/drivers/media/video/saa7134/saa7134.h
index 4dc66f4..2b7661f 100644
--- a/drivers/media/video/saa7134/saa7134.h
+++ b/drivers/media/video/saa7134/saa7134.h
@@ -557,7 +557,9 @@
#if defined(CONFIG_VIDEO_SAA7134_DVB) || defined(CONFIG_VIDEO_SAA7134_DVB_MODULE)
/* SAA7134_MPEG_DVB only */
struct videobuf_dvb dvb;
- int (*original_demod_sleep)(struct dvb_frontend* fe);
+ 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
};