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authorAbylay Ospan <aospan@netup.ru>2010-01-13 05:01:56 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2010-02-26 15:10:35 -0300
commitceb59cf068d54761c653c42dd45c14e1ecf0f7d3 (patch)
tree40815687464624de9d1c343a48f3d473bc32cb4a /drivers/media
parentc52af79916028f9d15638519b54a80ed1c10bce5 (diff)
V4L/DVB (13936): 22-kHz set_tone fix for NetUP Dual DVB-S2-CI card
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: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/dvb/frontends/lnbp21.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/media/dvb/frontends/lnbp21.c b/drivers/media/dvb/frontends/lnbp21.c
index b181bf023ad..49d2b1c1611 100644
--- a/drivers/media/dvb/frontends/lnbp21.c
+++ b/drivers/media/dvb/frontends/lnbp21.c
@@ -158,7 +158,8 @@ 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;
- fe->ops.set_tone = lnbp21_set_tone;
+ if (!fe->ops.set_tone) /* don't redefine */
+ fe->ops.set_tone = lnbp21_set_tone;
printk(KERN_INFO "LNBx2x attached on addr=%x\n", lnbp21->i2c_addr);
return fe;