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[media] mn88473: improve IF frequency and BW handling

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Separate IF and BW based registers.
Add support for DVB-T and DVB-T2 6MHz channel bandwidth.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Antti Palosaari 2014-09-30 23:19:30 -03:00 committed by Mauro Carvalho Chehab
parent 6ebbe22d42
commit df810e8a97
1 changed files with 47 additions and 17 deletions
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64
drivers/media/dvb-frontends/mn88473.c
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@ -117,8 +117,8 @@ static int mn88473_set_frontend(struct dvb_frontend *fe)
struct mn88473_dev *dev = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret, i;
u32 if_frequency = 0;
u8 params[10], delivery_system;
u32 if_frequency;
u8 delivery_system_val, if_val[3], bw_val[7];
dev_dbg(&dev->i2c->dev,
"%s: delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%d stream_id=%d\n",
@ -133,22 +133,43 @@ static int mn88473_set_frontend(struct dvb_frontend *fe)
switch (c->delivery_system) {
case SYS_DVBT:
delivery_system = 0x02;
if (c->bandwidth_hz <= 7000000)
memcpy(params, "\x2e\xcb\xfb\xc8\x00\x00\x17\x0a\x17\x0a", 10);
else if (c->bandwidth_hz <= 8000000)
memcpy(params, "\x2e\xcb\xfb\xaf\x00\x00\x11\xec\x11\xec", 10);
delivery_system_val = 0x02;
break;
case SYS_DVBT2:
delivery_system = 0x03;
if (c->bandwidth_hz <= 7000000)
memcpy(params, "\x2e\xcb\xfb\xc8\x00\x00\x17\x0a\x17\x0a", 10);
else if (c->bandwidth_hz <= 8000000)
memcpy(params, "\x2e\xcb\xfb\xaf\x00\x00\x11\xec\x11\xec", 10);
delivery_system_val = 0x03;
break;
case SYS_DVBC_ANNEX_A:
delivery_system = 0x04;
memcpy(params, "\x33\xea\xb3\xaf\x00\x00\x11\xec\x11\xec", 10);
delivery_system_val = 0x04;
break;
default:
ret = -EINVAL;
goto err;
}
switch (c->delivery_system) {
case SYS_DVBT:
case SYS_DVBT2:
if (c->bandwidth_hz <= 6000000) {
/* IF 3570000 Hz, BW 6000000 Hz */
memcpy(if_val, "\x24\x8e\x8a", 3);
memcpy(bw_val, "\xe9\x55\x55\x1c\x29\x1c\x29", 7);
} else if (c->bandwidth_hz <= 7000000) {
/* IF 4570000 Hz, BW 7000000 Hz */
memcpy(if_val, "\x2e\xcb\xfb", 3);
memcpy(bw_val, "\xc8\x00\x00\x17\x0a\x17\x0a", 7);
} else if (c->bandwidth_hz <= 8000000) {
/* IF 4570000 Hz, BW 8000000 Hz */
memcpy(if_val, "\x2e\xcb\xfb", 3);
memcpy(bw_val, "\xaf\x00\x00\x11\xec\x11\xec", 7);
} else {
ret = -EINVAL;
goto err;
}
break;
case SYS_DVBC_ANNEX_A:
/* IF 5070000 Hz, BW 8000000 Hz */
memcpy(if_val, "\x33\xea\xb3", 3);
memcpy(bw_val, "\xaf\x00\x00\x11\xec\x11\xec", 7);
break;
default:
ret = -EINVAL;
@ -169,9 +190,12 @@ static int mn88473_set_frontend(struct dvb_frontend *fe)
dev_dbg(&dev->i2c->dev, "%s: get_if_frequency=%d\n",
__func__, if_frequency);
} else {
if_frequency = 0;
}
switch (if_frequency) {
case 3570000:
case 4570000:
case 5070000:
break;
@ -189,11 +213,17 @@ static int mn88473_set_frontend(struct dvb_frontend *fe)
ret = mn88473_wregs(dev, 0x1c00, "\x18", 1);
ret = mn88473_wregs(dev, 0x1c01, "\x01", 1);
ret = mn88473_wregs(dev, 0x1c02, "\x21", 1);
ret = mn88473_wreg(dev, 0x1c03, delivery_system);
ret = mn88473_wreg(dev, 0x1c03, delivery_system_val);
ret = mn88473_wregs(dev, 0x1c0b, "\x00", 1);
for (i = 0; i < 10; i++) {
ret = mn88473_wreg(dev, 0x1c10 + i, params[i]);
for (i = 0; i < sizeof(if_val); i++) {
ret = mn88473_wreg(dev, 0x1c10 + i, if_val[i]);
if (ret)
goto err;
}
for (i = 0; i < sizeof(bw_val); i++) {
ret = mn88473_wreg(dev, 0x1c13 + i, bw_val[i]);
if (ret)
goto err;
}