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media: dvb-frontends/stv0910: implement diseqc_send_burst

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This implements the diseqc_send_burst frontend op to support sending
mini-DISEQC bursts. Picked up from dddvb's driver package where this
specific block was disabled via #if 0/#endif, but is still working
according to feedback from upstream, so add it.

Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Daniel Scheller 2017-07-23 06:13:10 -04:00 committed by Mauro Carvalho Chehab
parent 399196ed06
commit 448461af0e
1 changed files with 22 additions and 0 deletions
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22
drivers/media/dvb-frontends/stv0910.c
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@ -1638,6 +1638,27 @@ static int send_master_cmd(struct dvb_frontend *fe,
return 0; return 0;
} }
static int send_burst(struct dvb_frontend *fe, enum fe_sec_mini_cmd burst)
{
struct stv *state = fe->demodulator_priv;
u16 offs = state->nr ? 0x40 : 0;
u8 value;
if (burst == SEC_MINI_A) {
write_reg(state, RSTV0910_P1_DISTXCFG + offs, 0x3F);
value = 0x00;
} else {
write_reg(state, RSTV0910_P1_DISTXCFG + offs, 0x3E);
value = 0xFF;
}
wait_dis(state, 0x40, 0x00);
write_reg(state, RSTV0910_P1_DISTXFIFO + offs, value);
write_reg(state, RSTV0910_P1_DISTXCFG + offs, 0x3A);
wait_dis(state, 0x20, 0x20);
return 0;
}
static int sleep(struct dvb_frontend *fe) static int sleep(struct dvb_frontend *fe)
{ {
struct stv *state = fe->demodulator_priv; struct stv *state = fe->demodulator_priv;
@ -1673,6 +1694,7 @@ static struct dvb_frontend_ops stv0910_ops = {
.set_tone = set_tone, .set_tone = set_tone,
.diseqc_send_master_cmd = send_master_cmd, .diseqc_send_master_cmd = send_master_cmd,
.diseqc_send_burst = send_burst,
}; };
static struct stv_base *match_base(struct i2c_adapter *i2c, u8 adr) static struct stv_base *match_base(struct i2c_adapter *i2c, u8 adr)