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[PATCH] dvb: frontend: tda1004x: support tda827x tuners
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o added preliminary support for tda827x tuners
o set parameters for drift compensation to 0
  makes no sense for DVB-T but can prevent lock

Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Hartmut Hackmann authored and Linus Torvalds committed Jul 8, 2005
1 parent 0c744b0 commit f03cbea
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Showing 2 changed files with 44 additions and 4 deletions.
44 changes: 40 additions & 4 deletions drivers/media/dvb/frontends/tda1004x.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -120,6 +120,8 @@ static int debug;
#define TDA10046H_GPIO_OUT_SEL 0x41
#define TDA10046H_GPIO_SELECT 0x42
#define TDA10046H_AGC_CONF 0x43
#define TDA10046H_AGC_THR 0x44
#define TDA10046H_AGC_RENORM 0x45
#define TDA10046H_AGC_GAINS 0x46
#define TDA10046H_AGC_TUN_MIN 0x47
#define TDA10046H_AGC_TUN_MAX 0x48
Expand Down Expand Up @@ -272,14 +274,26 @@ static int tda10046h_set_bandwidth(struct tda1004x_state *state,
switch (bandwidth) {
case BANDWIDTH_6_MHZ:
tda1004x_write_buf(state, TDA10046H_TIME_WREF1, bandwidth_6mhz, sizeof(bandwidth_6mhz));
if (state->config->if_freq == TDA10046_FREQ_045) {
tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_MSB, 0x09);
tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_LSB, 0x4f);
}
break;

case BANDWIDTH_7_MHZ:
tda1004x_write_buf(state, TDA10046H_TIME_WREF1, bandwidth_7mhz, sizeof(bandwidth_7mhz));
if (state->config->if_freq == TDA10046_FREQ_045) {
tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_MSB, 0x0a);
tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_LSB, 0x79);
}
break;

case BANDWIDTH_8_MHZ:
tda1004x_write_buf(state, TDA10046H_TIME_WREF1, bandwidth_8mhz, sizeof(bandwidth_8mhz));
if (state->config->if_freq == TDA10046_FREQ_045) {
tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_MSB, 0x0b);
tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_LSB, 0xa3);
}
break;

default:
Expand Down Expand Up @@ -420,6 +434,14 @@ static void tda10046_init_plls(struct dvb_frontend* fe)
tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_MSB, 0xd4);
tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_LSB, 0x13);
break;
case TDA10046_FREQ_045:
tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_MSB, 0x0b);
tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_LSB, 0xa3);
break;
case TDA10046_FREQ_052:
tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_MSB, 0x0c);
tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_LSB, 0x06);
break;
}
tda10046h_set_bandwidth(state, BANDWIDTH_8_MHZ); // default bandwidth 8 MHz
}
Expand Down Expand Up @@ -590,6 +612,16 @@ static int tda10046_init(struct dvb_frontend* fe)
tda1004x_write_byteI(state, TDA10046H_AGC_CONF, 0x0a); // AGC setup
tda1004x_write_byteI(state, TDA10046H_CONF_POLARITY, 0x60); // set AGC polarities
break;
case TDA10046_AGC_IFO_AUTO_POS:
tda1004x_write_byteI(state, TDA10046H_AGC_CONF, 0x0a); // AGC setup
tda1004x_write_byteI(state, TDA10046H_CONF_POLARITY, 0x00); // set AGC polarities
break;
case TDA10046_AGC_TDA827X:
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, 0x0E); // Gain Renormalize
tda1004x_write_byteI(state, TDA10046H_CONF_POLARITY, 0x60); // set AGC polarities
break;
}
tda1004x_write_byteI(state, TDA10046H_CONF_TRISTATE1, 0x61); // Turn both AGC outputs on
tda1004x_write_byteI(state, TDA10046H_AGC_TUN_MIN, 0); // }
Expand Down Expand Up @@ -1091,9 +1123,12 @@ static int tda1004x_sleep(struct dvb_frontend* fe)
break;

case TDA1004X_DEMOD_TDA10046:
tda1004x_write_mask(state, TDA1004X_CONFC4, 1, 1);
if (state->config->pll_sleep != NULL)
if (state->config->pll_sleep != NULL) {
tda1004x_enable_tuner_i2c(state);
state->config->pll_sleep(fe);
tda1004x_disable_tuner_i2c(state);
}
tda1004x_write_mask(state, TDA1004X_CONFC4, 1, 1);
break;
}
state->initialised = 0;
Expand All @@ -1104,8 +1139,9 @@ static int tda1004x_sleep(struct dvb_frontend* fe)
static int tda1004x_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
{
fesettings->min_delay_ms = 800;
fesettings->step_size = 166667;
fesettings->max_drift = 166667*2;
/* Drift compensation makes no sense for DVB-T */
fesettings->step_size = 0;
fesettings->max_drift = 0;
return 0;
}

Expand Down
4 changes: 4 additions & 0 deletions drivers/media/dvb/frontends/tda1004x.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -34,11 +34,15 @@ enum tda10046_xtal {
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 */
};

enum tda10046_if {
TDA10046_FREQ_3617, /* original config, 36,166 MHZ */
TDA10046_FREQ_3613, /* 36,13 MHZ */
TDA10046_FREQ_045, /* low IF, 4.0, 4.5, or 5.0 MHZ */
TDA10046_FREQ_052, /* low IF, 5.1667 MHZ for tda9889 */
};

struct tda1004x_config
Expand Down

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