diff options
| author | Abylay Ospan <aospan@netup.ru> | 2010-01-22 22:01:44 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-02-26 21:10:41 +0300 |
| commit | 0726681a7080cef6a9fd414894690fac16418772 (patch) | |
| tree | b59fbc376c6263cf3899c682126de1bf841dcb2d /drivers/media/dvb/frontends | |
| parent | 6b54ee082543294a04ea1d758abdc6013cbb4e2e (diff) | |
| download | linux-0726681a7080cef6a9fd414894690fac16418772.tar.xz | |
V4L/DVB: 22-kHz set_tone fix for NetUP Dual DVB-S2-CI card. 22kHz logic controlled by demod
22-kHz tone can be driven in two ways:
1. LNBH24 can produce 22kHz continuous tone when TEN=1 ( 22 KHz tone output is
always activated ).
2. LNBH24 can reproduce 22kHz tone timings from DSQIN or EXTM pin's when TEN=0.
From LNBH24 datasheet:
"In order to improve design flexibility an external tone input pin is
available (EXTM). The EXTM is a Logic input pin which activates the 22 kHz
tone output, on the VoTX pin, by using the LNBH24 integrated tone generator
(similar to the DSQIN pin function). In fact, the output tone waveform
characteristics will always be internally controlled by the LNBH24 tone
generator and the EXTM signal will be used as a timing control for DiSEqC tone
data encoding on the VoTX output."
In NetUP Dual DVB-S2-CI card 22kHz tone timings on EXTM pin produced by
STV0900 demod:
.set_tone = stv0900_set_tone
redefine to "set_tone = lnbp21_set_tone" is not correct for "NetUP Dual
DVB-S2-CI card".
Signed-off-by: Abylay Ospan <aospan@netup.ru>
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/frontends')
| -rw-r--r-- | drivers/media/dvb/frontends/lnbp21.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/dvb/frontends/lnbp21.c b/drivers/media/dvb/frontends/lnbp21.c index 49d2b1c16119..13437259eeac 100644 --- a/drivers/media/dvb/frontends/lnbp21.c +++ b/drivers/media/dvb/frontends/lnbp21.c @@ -158,7 +158,7 @@ static struct dvb_frontend *lnbx2x_attach(struct dvb_frontend *fe, /* override frontend ops */ fe->ops.set_voltage = lnbp21_set_voltage; fe->ops.enable_high_lnb_voltage = lnbp21_enable_high_lnb_voltage; - if (!fe->ops.set_tone) /* don't redefine */ + if (!(override_clear & LNBH24_TEN)) /*22kHz logic controlled by demod*/ fe->ops.set_tone = lnbp21_set_tone; printk(KERN_INFO "LNBx2x attached on addr=%x\n", lnbp21->i2c_addr); |