Commit 90e3bd4b authored by Hartmut Birr's avatar Hartmut Birr Committed by Mauro Carvalho Chehab
Browse files

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: default avatarHartmut Birr <e9hack@googlemail.com>
Signed-off-by: default avatarOliver Endriss <o.endriss@gmx.de>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent 59327a48
......@@ -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 */
......
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