Software to turn the RTL2832U into a SDR receiver
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rtl-sdr/include/tuner_r82xx.h

120 lines
2.7 KiB

/*
* Rafael Micro R820T/R828D driver
*
* Copyright (C) 2013 Mauro Carvalho Chehab <mchehab@redhat.com>
* Copyright (C) 2013 Steve Markgraf <steve@steve-m.de>
*
* This driver is a heavily modified version of the driver found in the
* Linux kernel:
* http://git.linuxtv.org/linux-2.6.git/history/HEAD:/drivers/media/tuners/r820t.c
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef R82XX_H
#define R82XX_H
#define R820T_I2C_ADDR 0x34
#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
#define REG_SHADOW_START 5
#define NUM_REGS 30
#define NUM_IMR 5
#define IMR_TRIAL 9
#define VER_NUM 49
enum r82xx_chip {
CHIP_R820T,
CHIP_R620D,
CHIP_R828D,
CHIP_R828,
CHIP_R828S,
CHIP_R820C,
};
enum r82xx_tuner_type {
TUNER_RADIO = 1,
TUNER_ANALOG_TV,
TUNER_DIGITAL_TV
};
enum r82xx_xtal_cap_value {
XTAL_LOW_CAP_30P = 0,
XTAL_LOW_CAP_20P,
XTAL_LOW_CAP_10P,
XTAL_LOW_CAP_0P,
XTAL_HIGH_CAP_0P
};
struct r82xx_config {
uint8_t i2c_addr;
uint32_t xtal;
enum r82xx_chip rafael_chip;
unsigned int max_i2c_msg_len;
int use_predetect;
};
struct r82xx_priv {
struct r82xx_config *cfg;
uint8_t regs[NUM_REGS];
uint8_t buf[NUM_REGS + 1];
enum r82xx_xtal_cap_value xtal_cap_sel;
uint16_t pll; /* kHz */
uint32_t int_freq;
uint8_t fil_cal_code;
uint8_t input;
int has_lock;
int init_done;
/* Store current mode */
uint32_t delsys;
enum r82xx_tuner_type type;
uint32_t bw; /* in MHz */
void *rtl_dev;
};
struct r82xx_freq_range {
uint32_t freq;
uint8_t open_d;
uint8_t rf_mux_ploy;
uint8_t tf_c;
uint8_t xtal_cap20p;
uint8_t xtal_cap10p;
uint8_t xtal_cap0p;
};
enum r82xx_delivery_system {
SYS_UNDEFINED,
SYS_DVBT,
SYS_DVBT2,
SYS_ISDBT,
};
int r82xx_standby(struct r82xx_priv *priv);
int r82xx_init(struct r82xx_priv *priv);
int r82xx_set_freq(struct r82xx_priv *priv, uint32_t freq);
int r82xx_set_gain(struct r82xx_priv *priv, int set_manual_gain, int gain);
int r82xx_set_bandwidth(struct r82xx_priv *priv, int bandwidth, uint32_t rate);
#endif