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V4L/DVB (3304): TDA10046 Driver update

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- Set outputs to tristate in sleep mode
- Reduce dangerously high firmware download speed with 16MHz xtal
- added tda827x configuration with GPIOs low
- added comments to stupid looking IIC reads that work around bugs in
  the tda10046.
- some minor updates

Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Hartmut Hackmann 2006-02-07 06:49:10 -02:00 committed by Mauro Carvalho Chehab
parent 0157a9cc72
commit 0eb3de20a1
2 changed files with 23 additions and 5 deletions
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25
drivers/media/dvb/frontends/tda1004x.c
View file

@ -229,7 +229,7 @@ static int tda1004x_enable_tuner_i2c(struct tda1004x_state *state)
dprintk("%s\n", __FUNCTION__);
result = tda1004x_write_mask(state, TDA1004X_CONFC4, 2, 2);
msleep(1);
msleep(20);
return result;
}
@ -502,7 +502,12 @@ static int tda10046_fwupload(struct dvb_frontend* fe)
const struct firmware *fw;
/* reset + wake up chip */
tda1004x_write_byteI(state, TDA1004X_CONFC4, 0);
if (state->config->xtal_freq == TDA10046_XTAL_4M) {
tda1004x_write_byteI(state, TDA1004X_CONFC4, 0);
} else {
dprintk("%s: 16MHz Xtal, reducing I2C speed\n", __FUNCTION__);
tda1004x_write_byteI(state, TDA1004X_CONFC4, 0x80);
}
tda1004x_write_mask(state, TDA10046H_CONF_TRISTATE1, 1, 0);
/* let the clocks recover from sleep */
msleep(5);
@ -651,7 +656,7 @@ static int tda10046_init(struct dvb_frontend* fe)
// tda setup
tda1004x_write_mask(state, TDA1004X_CONFC4, 0x20, 0); // disable DSP watchdog timer
tda1004x_write_byteI(state, TDA1004X_AUTO, 0x87); // 100 ppm crystal, select HP stream
tda1004x_write_byteI(state, TDA1004X_CONFC1, 8); // disable pulse killer
tda1004x_write_byteI(state, TDA1004X_CONFC1, 0x88); // enable pulse killer
switch (state->config->agc_config) {
case TDA10046_AGC_DEFAULT:
@ -672,6 +677,12 @@ static int tda10046_init(struct dvb_frontend* fe)
tda1004x_write_byteI(state, TDA10046H_AGC_RENORM, 0x08); // Gain Renormalize
tda1004x_write_byteI(state, TDA10046H_CONF_POLARITY, 0x6a); // set AGC polarities
break;
case TDA10046_AGC_TDA827X_GPL:
tda1004x_write_byteI(state, TDA10046H_AGC_CONF, 0x02); // AGC setup
tda1004x_write_byteI(state, TDA10046H_AGC_THR, 0x70); // AGC Threshold
tda1004x_write_byteI(state, TDA10046H_AGC_RENORM, 0x08); // Gain Renormalize
tda1004x_write_byteI(state, TDA10046H_CONF_POLARITY, 0x60); // set AGC polarities
break;
}
tda1004x_write_byteI(state, TDA1004X_CONFADC2, 0x38);
tda1004x_write_byteI(state, TDA10046H_CONF_TRISTATE1, 0x61); // Turn both AGC outputs on
@ -683,6 +694,7 @@ static int tda10046_init(struct dvb_frontend* fe)
tda1004x_write_byteI(state, TDA10046H_CVBER_CTRL, 0x1a); // 10^6 VBER measurement bits
tda1004x_write_byteI(state, TDA1004X_CONF_TS1, 7); // MPEG2 interface config
tda1004x_write_byteI(state, TDA1004X_CONF_TS2, 0xc0); // MPEG2 interface config
// tda1004x_write_mask(state, 0x50, 0x80, 0x80); // handle out of guard echoes
tda1004x_write_mask(state, 0x3a, 0x80, state->config->invert_oclk << 7);
state->initialised = 1;
@ -1027,6 +1039,7 @@ static int tda1004x_read_status(struct dvb_frontend* fe, fe_status_t * fe_status
if (status == -1)
return -EIO;
cber |= (status << 8);
// The address 0x20 should be read to cope with a TDA10046 bug
tda1004x_read_byte(state, TDA1004X_CBER_RESET);
if (cber != 65535)
@ -1047,7 +1060,8 @@ static int tda1004x_read_status(struct dvb_frontend* fe, fe_status_t * fe_status
status = tda1004x_read_byte(state, TDA1004X_VBER_MSB);
if (status == -1)
return -EIO;
vber |= ((status << 16) & 0x0f);
vber |= (status & 0x0f) << 16;
// The CVBER_LUT should be read to cope with TDA10046 hardware bug
tda1004x_read_byte(state, TDA1004X_CVBER_LUT);
// if RS has passed some valid TS packets, then we must be
@ -1161,6 +1175,7 @@ static int tda1004x_read_ber(struct dvb_frontend* fe, u32* ber)
if (tmp < 0)
return -EIO;
*ber |= (tmp << 9);
// The address 0x20 should be read to cope with a TDA10046 bug
tda1004x_read_byte(state, TDA1004X_CBER_RESET);
dprintk("%s: ber=0x%x\n", __FUNCTION__, *ber);
@ -1187,6 +1202,8 @@ static int tda1004x_sleep(struct dvb_frontend* fe)
tda1004x_disable_tuner_i2c(state);
}
}
/* set outputs to tristate */
tda1004x_write_byteI(state, TDA10046H_CONF_TRISTATE1, 0xff);
tda1004x_write_mask(state, TDA1004X_CONFC4, 1, 1);
break;
}

3
drivers/media/dvb/frontends/tda1004x.h
View file

@ -35,7 +35,8 @@ enum tda10046_agc {
TDA10046_AGC_DEFAULT, /* original configuration */
TDA10046_AGC_IFO_AUTO_NEG, /* IF AGC only, automatic, negtive */
TDA10046_AGC_IFO_AUTO_POS, /* IF AGC only, automatic, positive */
TDA10046_AGC_TDA827X, /* IF AGC only, special setup for tda827x */
TDA10046_AGC_TDA827X, /* IF AGC only, special setup for tda827x */
TDA10046_AGC_TDA827X_GPL, /* same as above, but GPIOs 0 */
};
enum tda10046_if {