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V4L/DVB (13673): lnbp21: Implement 22 kHz tone control 

Support 22 kHz tone control for lnbp21 and lnbh24.
(Overrides the 'set_tone' hook of the frontend driver.)

Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Acked-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Oliver Endriss 2009-12-13 08:58:38 -03:00 committed by Mauro Carvalho Chehab
parent e6641c80b0
commit 9efc1bdd25
1 changed files with 27 additions and 1 deletions
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28
drivers/media/dvb/frontends/lnbp21.c
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@ -1,7 +1,7 @@
/*
* lnbp21.c - driver for lnb supply and control ic lnbp21
*
* Copyright (C) 2006 Oliver Endriss
* Copyright (C) 2006, 2009 Oliver Endriss <o.endriss@gmx.de>
* Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
*
* This program is free software; you can redistribute it and/or
@ -91,6 +91,31 @@ static int lnbp21_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg)
return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
}
static int lnbp21_set_tone(struct dvb_frontend *fe,
fe_sec_tone_mode_t tone)
{
struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
struct i2c_msg msg = { .addr = lnbp21->i2c_addr, .flags = 0,
.buf = &lnbp21->config,
.len = sizeof(lnbp21->config) };
switch (tone) {
case SEC_TONE_OFF:
lnbp21->config &= ~LNBP21_TEN;
break;
case SEC_TONE_ON:
lnbp21->config |= LNBP21_TEN;
break;
default:
return -EINVAL;
};
lnbp21->config |= lnbp21->override_or;
lnbp21->config &= lnbp21->override_and;
return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
}
static void lnbp21_release(struct dvb_frontend *fe)
{
/* LNBP power off */
@ -133,6 +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;
fe->ops.set_tone = lnbp21_set_tone;
printk(KERN_INFO "LNBx2x attached on addr=%x\n", lnbp21->i2c_addr);
return fe;