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add support for R828D tuner

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Signed-off-by: Steve Markgraf <steve@steve-m.de>
master
Steve Markgraf 12 years ago
parent 230930e975
commit e61731d230
4 changed files with 90 additions and 60 deletions
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  1. 5
      include/rtl-sdr.h
  2. 9
      include/tuner_r82xx.h
  3. 79
      src/librtlsdr.c
  4. 55
      src/tuner_r82xx.c

5
include/rtl-sdr.h
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@ -1,6 +1,6 @@
/*
* rtl-sdr, turns your Realtek RTL2832 based DVB dongle into a SDR receiver
* Copyright (C) 2012 by Steve Markgraf <steve@steve-m.de>
* Copyright (C) 2012-2013 by Steve Markgraf <steve@steve-m.de>
* Copyright (C) 2012 by Dimitri Stolnikov <horiz0n@gmx.net>
*
* This program is free software: you can redistribute it and/or modify
@ -175,7 +175,8 @@ enum rtlsdr_tuner {
RTLSDR_TUNER_FC0012,
RTLSDR_TUNER_FC0013,
RTLSDR_TUNER_FC2580,
RTLSDR_TUNER_R820T
RTLSDR_TUNER_R820T,
RTLSDR_TUNER_R828D
};
/*!

9
include/tuner_r82xx.h
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@ -26,8 +26,11 @@
#define R82XX_H
#define R820T_I2C_ADDR 0x34
#define R820T_CHECK_ADDR 0x00
#define R820T_CHECK_VAL 0x69
#define R828D_I2C_ADDR 0x74
#define R828D_XTAL_FREQ 16000000
#define R82XX_CHECK_ADDR 0x00
#define R82XX_CHECK_VAL 0x69
#define R82XX_IF_FREQ 3570000
@ -66,7 +69,6 @@ struct r82xx_config {
uint32_t xtal;
enum r82xx_chip rafael_chip;
unsigned int max_i2c_msg_len;
int use_diplexer;
int use_predetect;
};
@ -79,6 +81,7 @@ struct r82xx_priv {
uint16_t pll; /* kHz */
uint32_t int_freq;
uint8_t fil_cal_code;
uint8_t input;
int has_lock;
int init_done;

79
src/librtlsdr.c
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@ -184,13 +184,18 @@ int fc2580_set_gain_mode(void *dev, int manual) { return 0; }
int r820t_init(void *dev) {
rtlsdr_dev_t* devt = (rtlsdr_dev_t*)dev;
devt->r82xx_p.rtl_dev = dev;
if (devt->tuner_type == RTLSDR_TUNER_R828D) {
devt->r82xx_c.i2c_addr = R828D_I2C_ADDR;
devt->r82xx_c.rafael_chip = CHIP_R828D;
} else {
devt->r82xx_c.i2c_addr = R820T_I2C_ADDR;
devt->r82xx_c.rafael_chip = CHIP_R820T;
}
rtlsdr_get_xtal_freq(devt, NULL, &devt->r82xx_c.xtal);
devt->r82xx_c.rafael_chip = CHIP_R820T;
devt->r82xx_c.max_i2c_msg_len = 2;
devt->r82xx_c.use_diplexer = 0;
devt->r82xx_c.use_predetect = 0;
devt->r82xx_p.cfg = &devt->r82xx_c;
@ -214,6 +219,7 @@ int r820t_set_gain_mode(void *dev, int manual) {
rtlsdr_dev_t* devt = (rtlsdr_dev_t*)dev;
return r82xx_set_gain(&devt->r82xx_p, manual, 0);
}
/* definition order must match enum rtlsdr_tuner */
static rtlsdr_tuner_iface_t tuners[] = {
{
@ -244,6 +250,11 @@ static rtlsdr_tuner_iface_t tuners[] = {
r820t_set_freq, r820t_set_bw, r820t_set_gain, NULL,
r820t_set_gain_mode
},
{
r820t_init, r820t_exit,
r820t_set_freq, r820t_set_bw, r820t_set_gain, NULL,
r820t_set_gain_mode
},
};
typedef struct rtlsdr_dongle {
@ -892,7 +903,7 @@ int rtlsdr_get_tuner_gains(rtlsdr_dev_t *dev, int *gains)
63, 65, 67, 68, 70, 71, 179, 181, 182,
184, 186, 188, 191, 197 };
const int fc2580_gains[] = { 0 /* no gain values */ };
const int r820t_gains[] = { 0, 9, 14, 27, 37, 77, 87, 125, 144, 157,
const int r82xx_gains[] = { 0, 9, 14, 27, 37, 77, 87, 125, 144, 157,
166, 197, 207, 229, 254, 280, 297, 328,
338, 364, 372, 386, 402, 421, 434, 439,
445, 480, 496 };
@ -918,7 +929,8 @@ int rtlsdr_get_tuner_gains(rtlsdr_dev_t *dev, int *gains)
ptr = fc2580_gains; len = sizeof(fc2580_gains);
break;
case RTLSDR_TUNER_R820T:
ptr = r820t_gains; len = sizeof(r820t_gains);
case RTLSDR_TUNER_R828D:
ptr = r82xx_gains; len = sizeof(r82xx_gains);
break;
default:
ptr = unknown_gains; len = sizeof(unknown_gains);
@ -1103,7 +1115,8 @@ int rtlsdr_set_direct_sampling(rtlsdr_dev_t *dev, int on)
rtlsdr_set_i2c_repeater(dev, 0);
}
if (dev->tuner_type == RTLSDR_TUNER_R820T) {
if ((dev->tuner_type == RTLSDR_TUNER_R820T) ||
(dev->tuner_type == RTLSDR_TUNER_R828D)) {
r |= rtlsdr_set_if_freq(dev, R82XX_IF_FREQ);
/* enable spectrum inversion */
@ -1145,7 +1158,8 @@ int rtlsdr_set_offset_tuning(rtlsdr_dev_t *dev, int on)
if (!dev)
return -1;
if (dev->tuner_type == RTLSDR_TUNER_R820T)
if ((dev->tuner_type == RTLSDR_TUNER_R820T) ||
(dev->tuner_type == RTLSDR_TUNER_R828D))
return -2;
if (dev->direct_sampling)
@ -1432,27 +1446,19 @@ int rtlsdr_open(rtlsdr_dev_t **out_dev, uint32_t index)
goto found;
}
reg = rtlsdr_i2c_read_reg(dev, R820T_I2C_ADDR, R820T_CHECK_ADDR);
if (reg == R820T_CHECK_VAL) {
reg = rtlsdr_i2c_read_reg(dev, R820T_I2C_ADDR, R82XX_CHECK_ADDR);
if (reg == R82XX_CHECK_VAL) {
fprintf(stderr, "Found Rafael Micro R820T tuner\n");
dev->tuner_type = RTLSDR_TUNER_R820T;
/* disable Zero-IF mode */
rtlsdr_demod_write_reg(dev, 1, 0xb1, 0x1a, 1);
/* only enable In-phase ADC input */
rtlsdr_demod_write_reg(dev, 0, 0x08, 0x4d, 1);
/* the R820T uses 3.57 MHz IF for the DVB-T 6 MHz mode, and
* 4.57 MHz for the 8 MHz mode */
rtlsdr_set_if_freq(dev, R82XX_IF_FREQ);
/* enable spectrum inversion */
rtlsdr_demod_write_reg(dev, 1, 0x15, 0x01, 1);
goto found;
}
reg = rtlsdr_i2c_read_reg(dev, R828D_I2C_ADDR, R82XX_CHECK_ADDR);
if (reg == R82XX_CHECK_VAL) {
fprintf(stderr, "Found Rafael Micro R828D tuner\n");
dev->tuner_type = RTLSDR_TUNER_R828D;
}
/* initialise GPIOs */
rtlsdr_set_gpio_output(dev, 5);
@ -1476,14 +1482,35 @@ int rtlsdr_open(rtlsdr_dev_t **out_dev, uint32_t index)
}
found:
if (dev->tuner_type == RTLSDR_TUNER_UNKNOWN) {
/* use the rtl clock value by default */
dev->tun_xtal = dev->rtl_xtal;
dev->tuner = &tuners[dev->tuner_type];
switch (dev->tuner_type) {
case RTLSDR_TUNER_R828D:
dev->tun_xtal = R828D_XTAL_FREQ;
case RTLSDR_TUNER_R820T:
/* disable Zero-IF mode */
rtlsdr_demod_write_reg(dev, 1, 0xb1, 0x1a, 1);
/* only enable In-phase ADC input */
rtlsdr_demod_write_reg(dev, 0, 0x08, 0x4d, 1);
/* the R82XX use 3.57 MHz IF for the DVB-T 6 MHz mode, and
* 4.57 MHz for the 8 MHz mode */
rtlsdr_set_if_freq(dev, R82XX_IF_FREQ);
/* enable spectrum inversion */
rtlsdr_demod_write_reg(dev, 1, 0x15, 0x01, 1);
break;
case RTLSDR_TUNER_UNKNOWN:
fprintf(stderr, "No supported tuner found\n");
rtlsdr_set_direct_sampling(dev, 1);
break;
default:
break;
}
dev->tuner = &tuners[dev->tuner_type];
dev->tun_xtal = dev->rtl_xtal; /* use the rtl clock value by default */
if (dev->tuner->init)
r = dev->tuner->init(dev);

55
src/tuner_r82xx.c
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@ -31,9 +31,8 @@
#include "tuner_r82xx.h"
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
#define VCO_POWER_REF 0x02
#define DIP_FREQ 32000000
#define MHZ(x) ((x)*1000*1000)
#define KHZ(x) ((x)*1000)
/*
* Static constants
@ -430,13 +429,14 @@ static int r82xx_set_pll(struct r82xx_priv *priv, uint32_t freq)
uint8_t mix_div = 2;
uint8_t div_buf = 0;
uint8_t div_num = 0;
uint8_t vco_power_ref = 2;
uint8_t refdiv2 = 0;
uint8_t ni, si, nint, vco_fine_tune, val;
uint8_t data[5];
/* Frequency in kHz */
freq_khz = (freq + 500) / 1000;
pll_ref = priv->cfg->xtal; // / 1000;
pll_ref = priv->cfg->xtal;
pll_ref_khz = (priv->cfg->xtal + 500) / 1000;
rc = r82xx_write_reg_mask(priv, 0x10, refdiv2, 0x10);
@ -471,11 +471,14 @@ static int r82xx_set_pll(struct r82xx_priv *priv, uint32_t freq)
if (rc < 0)
return rc;
if (priv->cfg->rafael_chip == CHIP_R828D)
vco_power_ref = 1;
vco_fine_tune = (data[4] & 0x30) >> 4;
if (vco_fine_tune > VCO_POWER_REF)
if (vco_fine_tune > vco_power_ref)
div_num = div_num - 1;
else if (vco_fine_tune < VCO_POWER_REF)
else if (vco_fine_tune < vco_power_ref)
div_num = div_num + 1;
rc = r82xx_write_reg_mask(priv, 0x10, div_num << 5, 0xe0);
@ -486,8 +489,8 @@ static int r82xx_set_pll(struct r82xx_priv *priv, uint32_t freq)
nint = vco_freq / (2 * pll_ref);
vco_fra = (vco_freq - 2 * pll_ref * nint) / 1000;
if (nint > 63) {
fprintf(stderr, "No valid PLL values for %u kHz!\n", freq);
if (nint > ((128 / vco_power_ref) - 1)) {
fprintf(stderr, "[R82XX] No valid PLL values for %u Hz!\n", freq);
return -EINVAL;
}
@ -545,6 +548,7 @@ static int r82xx_set_pll(struct r82xx_priv *priv, uint32_t freq)
}
if (!(data[2] & 0x40)) {
printf("[R82XX] PLL not locked!\n");
priv->has_lock = 0;
return 0;
}
@ -628,17 +632,6 @@ static int r82xx_sysfreq_sel(struct r82xx_priv *priv, uint32_t freq,
break;
}
if (priv->cfg->use_diplexer &&
((priv->cfg->rafael_chip == CHIP_R820T) ||
(priv->cfg->rafael_chip == CHIP_R828S) ||
(priv->cfg->rafael_chip == CHIP_R820C))) {
if (freq > DIP_FREQ)
air_cable1_in = 0x00;
else
air_cable1_in = 0x60;
cable2_in = 0x00;
}
if (priv->cfg->use_predetect) {
rc = r82xx_write_reg_mask(priv, 0x06, pre_dect, 0x40);
if (rc < 0)
@ -658,6 +651,8 @@ static int r82xx_sysfreq_sel(struct r82xx_priv *priv, uint32_t freq,
if (rc < 0)
return rc;
priv->input = air_cable1_in;
/* Air-IN only for Astrometa */
rc = r82xx_write_reg_mask(priv, 0x05, air_cable1_in, 0x60);
if (rc < 0)
@ -675,11 +670,6 @@ static int r82xx_sysfreq_sel(struct r82xx_priv *priv, uint32_t freq,
rc = r82xx_write_reg_mask(priv, 0x0a, filter_cur, 0x60);
if (rc < 0)
return rc;
/*
* Original driver initializes regs 0x05 and 0x06 with the
* same value again on this point. Probably, it is just an
* error there
*/
/*
* Set LNA
@ -1088,8 +1078,7 @@ int r82xx_set_freq(struct r82xx_priv *priv, uint32_t freq)
{
int rc = -EINVAL;
uint32_t lo_freq = freq + priv->int_freq;
lo_freq = freq + priv->int_freq;
uint8_t air_cable1_in;
rc = r82xx_set_mux(priv, lo_freq);
if (rc < 0)
@ -1099,6 +1088,18 @@ int r82xx_set_freq(struct r82xx_priv *priv, uint32_t freq)
if (rc < 0 || !priv->has_lock)
goto err;
/* switch between 'Cable1' and 'Air-In' inputs on sticks with
* R828D tuner. We switch at 345 MHz, because that's where the
* noise-floor has about the same level with identical LNA
* settings. The original driver used 320 MHz. */
air_cable1_in = (freq > MHZ(345)) ? 0x00 : 0x60;
if ((priv->cfg->rafael_chip == CHIP_R828D) &&
(air_cable1_in != priv->input)) {
priv->input = air_cable1_in;
rc = r82xx_write_reg_mask(priv, 0x05, air_cable1_in, 0x60);
}
err:
if (rc < 0)
fprintf(stderr, "%s: failed=%d\n", __func__, rc);
@ -1234,8 +1235,6 @@ int r82xx_init(struct r82xx_priv *priv)
goto err;
rc = r82xx_sysfreq_sel(priv, 0, TUNER_DIGITAL_TV, SYS_DVBT);
if (rc < 0)
goto err;
err:
if (rc < 0)

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