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authorMatthias Schwarzott <zzam@gentoo.org>2008-04-12 22:04:50 +0400
committerMauro Carvalho Chehab <mchehab@infradead.org>2008-04-24 21:09:40 +0400
commit11d3f323930ef625c1018ed13adeb04127c356e0 (patch)
treee361482488c108ba7c48f922a1d7e465ada003cb /drivers/media/dvb/frontends
parent6a5cbd591c703491b62892682adc124ece67f3a9 (diff)
downloadlinux-11d3f323930ef625c1018ed13adeb04127c356e0.tar.xz
V4L/DVB (7575): mt312: add attach-time setting to invert lnb-voltage
Add a setting to config struct for inversion of lnb-voltage. Needed for support of Avermedia A700 cards. Signed-off-by: Matthias Schwarzott <zzam@gentoo.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/dvb/frontends')
-rw-r--r--drivers/media/dvb/frontends/mt312.c7
-rw-r--r--drivers/media/dvb/frontends/mt312.h3
2 files changed, 9 insertions, 1 deletions
diff --git a/drivers/media/dvb/frontends/mt312.c b/drivers/media/dvb/frontends/mt312.c
index e17a36180f9c..081ca3398c76 100644
--- a/drivers/media/dvb/frontends/mt312.c
+++ b/drivers/media/dvb/frontends/mt312.c
@@ -422,11 +422,16 @@ static int mt312_set_voltage(struct dvb_frontend *fe, const fe_sec_voltage_t v)
{
struct mt312_state *state = fe->demodulator_priv;
const u8 volt_tab[3] = { 0x00, 0x40, 0x00 };
+ u8 val;
if (v > SEC_VOLTAGE_OFF)
return -EINVAL;
- return mt312_writereg(state, DISEQC_MODE, volt_tab[v]);
+ val = volt_tab[v];
+ if (state->config->voltage_inverted)
+ val ^= 0x40;
+
+ return mt312_writereg(state, DISEQC_MODE, val);
}
static int mt312_read_status(struct dvb_frontend *fe, fe_status_t *s)
diff --git a/drivers/media/dvb/frontends/mt312.h b/drivers/media/dvb/frontends/mt312.h
index afe24fd822bd..96338f0c4dd4 100644
--- a/drivers/media/dvb/frontends/mt312.h
+++ b/drivers/media/dvb/frontends/mt312.h
@@ -31,6 +31,9 @@
struct mt312_config {
/* the demodulator's i2c address */
u8 demod_address;
+
+ /* inverted voltage setting */
+ int voltage_inverted:1;
};
#if defined(CONFIG_DVB_MT312) || (defined(CONFIG_DVB_MT312_MODULE) && defined(MODULE))