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V4L/DVB (5247): Stv0297: Enable BER/UNC counting 

Enable BER/UNC counting for the stv0297 frontend.
The idea for this patch comes from stv0297_cs.c.

Signed-off-by: Hartmut Birr <e9hack@googlemail.com>
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Hartmut Birr 2007-02-13 18:01:56 -03:00 committed by Mauro Carvalho Chehab
parent 59327a4897
commit 90e3bd4ba5
1 changed files with 15 additions and 4 deletions
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19
drivers/media/dvb/frontends/stv0297.c
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@ -35,6 +35,7 @@ struct stv0297_state {
const struct stv0297_config *config;
struct dvb_frontend frontend;
unsigned long last_ber;
unsigned long base_freq;
};
@ -310,6 +311,8 @@ static int stv0297_init(struct dvb_frontend *fe)
stv0297_writereg(state, state->config->inittab[i], state->config->inittab[i+1]);
msleep(200);
state->last_ber = 0;
return 0;
}
@ -340,11 +343,13 @@ static int stv0297_read_ber(struct dvb_frontend *fe, u32 * ber)
struct stv0297_state *state = fe->demodulator_priv;
u8 BER[3];
stv0297_writereg(state, 0xA0, 0x80); // Start Counting bit errors for 4096 Bytes
mdelay(25); // Hopefully got 4096 Bytes
stv0297_readregs(state, 0xA0, BER, 3);
mdelay(25);
*ber = (BER[2] << 8 | BER[1]) / (8 * 4096);
if (!(BER[0] & 0x80)) {
state->last_ber = BER[2] << 8 | BER[1];
stv0297_writereg_mask(state, 0xA0, 0x80, 0x80);
}
*ber = state->last_ber;
return 0;
}
@ -376,9 +381,14 @@ static int stv0297_read_ucblocks(struct dvb_frontend *fe, u32 * ucblocks)
{
struct stv0297_state *state = fe->demodulator_priv;
stv0297_writereg_mask(state, 0xDF, 0x03, 0x03); /* freeze the counters */
*ucblocks = (stv0297_readreg(state, 0xD5) << 8)
| stv0297_readreg(state, 0xD4);
stv0297_writereg_mask(state, 0xDF, 0x03, 0x02); /* clear the counters */
stv0297_writereg_mask(state, 0xDF, 0x03, 0x01); /* re-enable the counters */
return 0;
}
@ -648,6 +658,7 @@ struct dvb_frontend *stv0297_attach(const struct stv0297_config *config,
/* setup the state */
state->config = config;
state->i2c = i2c;
state->last_ber = 0;
state->base_freq = 0;
/* check if the demod is there */