606 lines
13 KiB
C
606 lines
13 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
Driver for ST STV0288 demodulator
|
|
Copyright (C) 2006 Georg Acher, BayCom GmbH, acher (at) baycom (dot) de
|
|
for Reel Multimedia
|
|
Copyright (C) 2008 TurboSight.com, Bob Liu <bob@turbosight.com>
|
|
Copyright (C) 2008 Igor M. Liplianin <liplianin@me.by>
|
|
Removed stb6000 specific tuner code and revised some
|
|
procedures.
|
|
2010-09-01 Josef Pavlik <josef@pavlik.it>
|
|
Fixed diseqc_msg, diseqc_burst and set_tone problems
|
|
|
|
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/string.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/jiffies.h>
|
|
#include <asm/div64.h>
|
|
|
|
#include <media/dvb_frontend.h>
|
|
#include "stv0288.h"
|
|
|
|
struct stv0288_state {
|
|
struct i2c_adapter *i2c;
|
|
const struct stv0288_config *config;
|
|
struct dvb_frontend frontend;
|
|
|
|
u8 initialised:1;
|
|
u32 tuner_frequency;
|
|
u32 symbol_rate;
|
|
enum fe_code_rate fec_inner;
|
|
int errmode;
|
|
};
|
|
|
|
#define STATUS_BER 0
|
|
#define STATUS_UCBLOCKS 1
|
|
|
|
static int debug;
|
|
static int debug_legacy_dish_switch;
|
|
#define dprintk(args...) \
|
|
do { \
|
|
if (debug) \
|
|
printk(KERN_DEBUG "stv0288: " args); \
|
|
} while (0)
|
|
|
|
|
|
static int stv0288_writeregI(struct stv0288_state *state, u8 reg, u8 data)
|
|
{
|
|
int ret;
|
|
u8 buf[] = { reg, data };
|
|
struct i2c_msg msg = {
|
|
.addr = state->config->demod_address,
|
|
.flags = 0,
|
|
.buf = buf,
|
|
.len = 2
|
|
};
|
|
|
|
ret = i2c_transfer(state->i2c, &msg, 1);
|
|
|
|
if (ret != 1)
|
|
dprintk("%s: writereg error (reg == 0x%02x, val == 0x%02x, ret == %i)\n",
|
|
__func__, reg, data, ret);
|
|
|
|
return (ret != 1) ? -EREMOTEIO : 0;
|
|
}
|
|
|
|
static int stv0288_write(struct dvb_frontend *fe, const u8 buf[], int len)
|
|
{
|
|
struct stv0288_state *state = fe->demodulator_priv;
|
|
|
|
if (len != 2)
|
|
return -EINVAL;
|
|
|
|
return stv0288_writeregI(state, buf[0], buf[1]);
|
|
}
|
|
|
|
static u8 stv0288_readreg(struct stv0288_state *state, u8 reg)
|
|
{
|
|
int ret;
|
|
u8 b0[] = { reg };
|
|
u8 b1[] = { 0 };
|
|
struct i2c_msg msg[] = {
|
|
{
|
|
.addr = state->config->demod_address,
|
|
.flags = 0,
|
|
.buf = b0,
|
|
.len = 1
|
|
}, {
|
|
.addr = state->config->demod_address,
|
|
.flags = I2C_M_RD,
|
|
.buf = b1,
|
|
.len = 1
|
|
}
|
|
};
|
|
|
|
ret = i2c_transfer(state->i2c, msg, 2);
|
|
|
|
if (ret != 2)
|
|
dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n",
|
|
__func__, reg, ret);
|
|
|
|
return b1[0];
|
|
}
|
|
|
|
static int stv0288_set_symbolrate(struct dvb_frontend *fe, u32 srate)
|
|
{
|
|
struct stv0288_state *state = fe->demodulator_priv;
|
|
unsigned int temp;
|
|
unsigned char b[3];
|
|
|
|
if ((srate < 1000000) || (srate > 45000000))
|
|
return -EINVAL;
|
|
|
|
stv0288_writeregI(state, 0x22, 0);
|
|
stv0288_writeregI(state, 0x23, 0);
|
|
stv0288_writeregI(state, 0x2b, 0xff);
|
|
stv0288_writeregI(state, 0x2c, 0xf7);
|
|
|
|
temp = (unsigned int)srate / 1000;
|
|
|
|
temp = temp * 32768;
|
|
temp = temp / 25;
|
|
temp = temp / 125;
|
|
b[0] = (unsigned char)((temp >> 12) & 0xff);
|
|
b[1] = (unsigned char)((temp >> 4) & 0xff);
|
|
b[2] = (unsigned char)((temp << 4) & 0xf0);
|
|
stv0288_writeregI(state, 0x28, 0x80); /* SFRH */
|
|
stv0288_writeregI(state, 0x29, 0); /* SFRM */
|
|
stv0288_writeregI(state, 0x2a, 0); /* SFRL */
|
|
|
|
stv0288_writeregI(state, 0x28, b[0]);
|
|
stv0288_writeregI(state, 0x29, b[1]);
|
|
stv0288_writeregI(state, 0x2a, b[2]);
|
|
dprintk("stv0288: stv0288_set_symbolrate\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int stv0288_send_diseqc_msg(struct dvb_frontend *fe,
|
|
struct dvb_diseqc_master_cmd *m)
|
|
{
|
|
struct stv0288_state *state = fe->demodulator_priv;
|
|
|
|
int i;
|
|
|
|
dprintk("%s\n", __func__);
|
|
|
|
stv0288_writeregI(state, 0x09, 0);
|
|
msleep(30);
|
|
stv0288_writeregI(state, 0x05, 0x12);/* modulated mode, single shot */
|
|
|
|
for (i = 0; i < m->msg_len; i++) {
|
|
if (stv0288_writeregI(state, 0x06, m->msg[i]))
|
|
return -EREMOTEIO;
|
|
}
|
|
msleep(m->msg_len*12);
|
|
return 0;
|
|
}
|
|
|
|
static int stv0288_send_diseqc_burst(struct dvb_frontend *fe,
|
|
enum fe_sec_mini_cmd burst)
|
|
{
|
|
struct stv0288_state *state = fe->demodulator_priv;
|
|
|
|
dprintk("%s\n", __func__);
|
|
|
|
if (stv0288_writeregI(state, 0x05, 0x03))/* burst mode, single shot */
|
|
return -EREMOTEIO;
|
|
|
|
if (stv0288_writeregI(state, 0x06, burst == SEC_MINI_A ? 0x00 : 0xff))
|
|
return -EREMOTEIO;
|
|
|
|
msleep(15);
|
|
if (stv0288_writeregI(state, 0x05, 0x12))
|
|
return -EREMOTEIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int stv0288_set_tone(struct dvb_frontend *fe, enum fe_sec_tone_mode tone)
|
|
{
|
|
struct stv0288_state *state = fe->demodulator_priv;
|
|
|
|
switch (tone) {
|
|
case SEC_TONE_ON:
|
|
if (stv0288_writeregI(state, 0x05, 0x10))/* cont carrier */
|
|
return -EREMOTEIO;
|
|
break;
|
|
|
|
case SEC_TONE_OFF:
|
|
if (stv0288_writeregI(state, 0x05, 0x12))/* burst mode off*/
|
|
return -EREMOTEIO;
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static u8 stv0288_inittab[] = {
|
|
0x01, 0x15,
|
|
0x02, 0x20,
|
|
0x09, 0x0,
|
|
0x0a, 0x4,
|
|
0x0b, 0x0,
|
|
0x0c, 0x0,
|
|
0x0d, 0x0,
|
|
0x0e, 0xd4,
|
|
0x0f, 0x30,
|
|
0x11, 0x80,
|
|
0x12, 0x03,
|
|
0x13, 0x48,
|
|
0x14, 0x84,
|
|
0x15, 0x45,
|
|
0x16, 0xb7,
|
|
0x17, 0x9c,
|
|
0x18, 0x0,
|
|
0x19, 0xa6,
|
|
0x1a, 0x88,
|
|
0x1b, 0x8f,
|
|
0x1c, 0xf0,
|
|
0x20, 0x0b,
|
|
0x21, 0x54,
|
|
0x22, 0x0,
|
|
0x23, 0x0,
|
|
0x2b, 0xff,
|
|
0x2c, 0xf7,
|
|
0x30, 0x0,
|
|
0x31, 0x1e,
|
|
0x32, 0x14,
|
|
0x33, 0x0f,
|
|
0x34, 0x09,
|
|
0x35, 0x0c,
|
|
0x36, 0x05,
|
|
0x37, 0x2f,
|
|
0x38, 0x16,
|
|
0x39, 0xbe,
|
|
0x3a, 0x0,
|
|
0x3b, 0x13,
|
|
0x3c, 0x11,
|
|
0x3d, 0x30,
|
|
0x40, 0x63,
|
|
0x41, 0x04,
|
|
0x42, 0x20,
|
|
0x43, 0x00,
|
|
0x44, 0x00,
|
|
0x45, 0x00,
|
|
0x46, 0x00,
|
|
0x47, 0x00,
|
|
0x4a, 0x00,
|
|
0x50, 0x10,
|
|
0x51, 0x38,
|
|
0x52, 0x21,
|
|
0x58, 0x54,
|
|
0x59, 0x86,
|
|
0x5a, 0x0,
|
|
0x5b, 0x9b,
|
|
0x5c, 0x08,
|
|
0x5d, 0x7f,
|
|
0x5e, 0x0,
|
|
0x5f, 0xff,
|
|
0x70, 0x0,
|
|
0x71, 0x0,
|
|
0x72, 0x0,
|
|
0x74, 0x0,
|
|
0x75, 0x0,
|
|
0x76, 0x0,
|
|
0x81, 0x0,
|
|
0x82, 0x3f,
|
|
0x83, 0x3f,
|
|
0x84, 0x0,
|
|
0x85, 0x0,
|
|
0x88, 0x0,
|
|
0x89, 0x0,
|
|
0x8a, 0x0,
|
|
0x8b, 0x0,
|
|
0x8c, 0x0,
|
|
0x90, 0x0,
|
|
0x91, 0x0,
|
|
0x92, 0x0,
|
|
0x93, 0x0,
|
|
0x94, 0x1c,
|
|
0x97, 0x0,
|
|
0xa0, 0x48,
|
|
0xa1, 0x0,
|
|
0xb0, 0xb8,
|
|
0xb1, 0x3a,
|
|
0xb2, 0x10,
|
|
0xb3, 0x82,
|
|
0xb4, 0x80,
|
|
0xb5, 0x82,
|
|
0xb6, 0x82,
|
|
0xb7, 0x82,
|
|
0xb8, 0x20,
|
|
0xb9, 0x0,
|
|
0xf0, 0x0,
|
|
0xf1, 0x0,
|
|
0xf2, 0xc0,
|
|
0x51, 0x36,
|
|
0x52, 0x09,
|
|
0x53, 0x94,
|
|
0x54, 0x62,
|
|
0x55, 0x29,
|
|
0x56, 0x64,
|
|
0x57, 0x2b,
|
|
0xff, 0xff,
|
|
};
|
|
|
|
static int stv0288_set_voltage(struct dvb_frontend *fe,
|
|
enum fe_sec_voltage volt)
|
|
{
|
|
dprintk("%s: %s\n", __func__,
|
|
volt == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
|
|
volt == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int stv0288_init(struct dvb_frontend *fe)
|
|
{
|
|
struct stv0288_state *state = fe->demodulator_priv;
|
|
int i;
|
|
u8 reg;
|
|
u8 val;
|
|
|
|
dprintk("stv0288: init chip\n");
|
|
stv0288_writeregI(state, 0x41, 0x04);
|
|
msleep(50);
|
|
|
|
/* we have default inittab */
|
|
if (state->config->inittab == NULL) {
|
|
for (i = 0; !(stv0288_inittab[i] == 0xff &&
|
|
stv0288_inittab[i + 1] == 0xff); i += 2)
|
|
stv0288_writeregI(state, stv0288_inittab[i],
|
|
stv0288_inittab[i + 1]);
|
|
} else {
|
|
for (i = 0; ; i += 2) {
|
|
reg = state->config->inittab[i];
|
|
val = state->config->inittab[i+1];
|
|
if (reg == 0xff && val == 0xff)
|
|
break;
|
|
stv0288_writeregI(state, reg, val);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int stv0288_read_status(struct dvb_frontend *fe, enum fe_status *status)
|
|
{
|
|
struct stv0288_state *state = fe->demodulator_priv;
|
|
|
|
u8 sync = stv0288_readreg(state, 0x24);
|
|
if (sync == 255)
|
|
sync = 0;
|
|
|
|
dprintk("%s : FE_READ_STATUS : VSTATUS: 0x%02x\n", __func__, sync);
|
|
|
|
*status = 0;
|
|
if (sync & 0x80)
|
|
*status |= FE_HAS_CARRIER | FE_HAS_SIGNAL;
|
|
if (sync & 0x10)
|
|
*status |= FE_HAS_VITERBI;
|
|
if (sync & 0x08) {
|
|
*status |= FE_HAS_LOCK;
|
|
dprintk("stv0288 has locked\n");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int stv0288_read_ber(struct dvb_frontend *fe, u32 *ber)
|
|
{
|
|
struct stv0288_state *state = fe->demodulator_priv;
|
|
|
|
if (state->errmode != STATUS_BER)
|
|
return 0;
|
|
*ber = (stv0288_readreg(state, 0x26) << 8) |
|
|
stv0288_readreg(state, 0x27);
|
|
dprintk("stv0288_read_ber %d\n", *ber);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int stv0288_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
|
|
{
|
|
struct stv0288_state *state = fe->demodulator_priv;
|
|
|
|
s32 signal = 0xffff - ((stv0288_readreg(state, 0x10) << 8));
|
|
|
|
|
|
signal = signal * 5 / 4;
|
|
*strength = (signal > 0xffff) ? 0xffff : (signal < 0) ? 0 : signal;
|
|
dprintk("stv0288_read_signal_strength %d\n", *strength);
|
|
|
|
return 0;
|
|
}
|
|
static int stv0288_sleep(struct dvb_frontend *fe)
|
|
{
|
|
struct stv0288_state *state = fe->demodulator_priv;
|
|
|
|
stv0288_writeregI(state, 0x41, 0x84);
|
|
state->initialised = 0;
|
|
|
|
return 0;
|
|
}
|
|
static int stv0288_read_snr(struct dvb_frontend *fe, u16 *snr)
|
|
{
|
|
struct stv0288_state *state = fe->demodulator_priv;
|
|
|
|
s32 xsnr = 0xffff - ((stv0288_readreg(state, 0x2d) << 8)
|
|
| stv0288_readreg(state, 0x2e));
|
|
xsnr = 3 * (xsnr - 0xa100);
|
|
*snr = (xsnr > 0xffff) ? 0xffff : (xsnr < 0) ? 0 : xsnr;
|
|
dprintk("stv0288_read_snr %d\n", *snr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int stv0288_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
|
|
{
|
|
struct stv0288_state *state = fe->demodulator_priv;
|
|
|
|
if (state->errmode != STATUS_BER)
|
|
return 0;
|
|
*ucblocks = (stv0288_readreg(state, 0x26) << 8) |
|
|
stv0288_readreg(state, 0x27);
|
|
dprintk("stv0288_read_ber %d\n", *ucblocks);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int stv0288_set_frontend(struct dvb_frontend *fe)
|
|
{
|
|
struct stv0288_state *state = fe->demodulator_priv;
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
|
|
u8 tda[3], reg, time_out = 0;
|
|
s8 tm;
|
|
|
|
dprintk("%s : FE_SET_FRONTEND\n", __func__);
|
|
|
|
if (c->delivery_system != SYS_DVBS) {
|
|
dprintk("%s: unsupported delivery system selected (%d)\n",
|
|
__func__, c->delivery_system);
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if (state->config->set_ts_params)
|
|
state->config->set_ts_params(fe, 0);
|
|
|
|
/* only frequency & symbol_rate are used for tuner*/
|
|
if (fe->ops.tuner_ops.set_params) {
|
|
fe->ops.tuner_ops.set_params(fe);
|
|
if (fe->ops.i2c_gate_ctrl)
|
|
fe->ops.i2c_gate_ctrl(fe, 0);
|
|
}
|
|
|
|
udelay(10);
|
|
stv0288_set_symbolrate(fe, c->symbol_rate);
|
|
/* Carrier lock control register */
|
|
stv0288_writeregI(state, 0x15, 0xc5);
|
|
|
|
tda[2] = 0x0; /* CFRL */
|
|
for (tm = -9; tm < 7;) {
|
|
/* Viterbi status */
|
|
reg = stv0288_readreg(state, 0x24);
|
|
if (reg & 0x8)
|
|
break;
|
|
if (reg & 0x80) {
|
|
time_out++;
|
|
if (time_out > 10)
|
|
break;
|
|
tda[2] += 40;
|
|
if (tda[2] < 40)
|
|
tm++;
|
|
} else {
|
|
tm++;
|
|
tda[2] = 0;
|
|
time_out = 0;
|
|
}
|
|
tda[1] = (unsigned char)tm;
|
|
stv0288_writeregI(state, 0x2b, tda[1]);
|
|
stv0288_writeregI(state, 0x2c, tda[2]);
|
|
msleep(30);
|
|
}
|
|
state->tuner_frequency = c->frequency;
|
|
state->fec_inner = FEC_AUTO;
|
|
state->symbol_rate = c->symbol_rate;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int stv0288_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
|
|
{
|
|
struct stv0288_state *state = fe->demodulator_priv;
|
|
|
|
if (enable)
|
|
stv0288_writeregI(state, 0x01, 0xb5);
|
|
else
|
|
stv0288_writeregI(state, 0x01, 0x35);
|
|
|
|
udelay(1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void stv0288_release(struct dvb_frontend *fe)
|
|
{
|
|
struct stv0288_state *state = fe->demodulator_priv;
|
|
kfree(state);
|
|
}
|
|
|
|
static const struct dvb_frontend_ops stv0288_ops = {
|
|
.delsys = { SYS_DVBS },
|
|
.info = {
|
|
.name = "ST STV0288 DVB-S",
|
|
.frequency_min_hz = 950 * MHz,
|
|
.frequency_max_hz = 2150 * MHz,
|
|
.frequency_stepsize_hz = 1 * MHz,
|
|
.symbol_rate_min = 1000000,
|
|
.symbol_rate_max = 45000000,
|
|
.symbol_rate_tolerance = 500, /* ppm */
|
|
.caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
|
|
FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
|
|
FE_CAN_QPSK |
|
|
FE_CAN_FEC_AUTO
|
|
},
|
|
|
|
.release = stv0288_release,
|
|
.init = stv0288_init,
|
|
.sleep = stv0288_sleep,
|
|
.write = stv0288_write,
|
|
.i2c_gate_ctrl = stv0288_i2c_gate_ctrl,
|
|
.read_status = stv0288_read_status,
|
|
.read_ber = stv0288_read_ber,
|
|
.read_signal_strength = stv0288_read_signal_strength,
|
|
.read_snr = stv0288_read_snr,
|
|
.read_ucblocks = stv0288_read_ucblocks,
|
|
.diseqc_send_master_cmd = stv0288_send_diseqc_msg,
|
|
.diseqc_send_burst = stv0288_send_diseqc_burst,
|
|
.set_tone = stv0288_set_tone,
|
|
.set_voltage = stv0288_set_voltage,
|
|
|
|
.set_frontend = stv0288_set_frontend,
|
|
};
|
|
|
|
struct dvb_frontend *stv0288_attach(const struct stv0288_config *config,
|
|
struct i2c_adapter *i2c)
|
|
{
|
|
struct stv0288_state *state = NULL;
|
|
int id;
|
|
|
|
/* allocate memory for the internal state */
|
|
state = kzalloc(sizeof(struct stv0288_state), GFP_KERNEL);
|
|
if (state == NULL)
|
|
goto error;
|
|
|
|
/* setup the state */
|
|
state->config = config;
|
|
state->i2c = i2c;
|
|
state->initialised = 0;
|
|
state->tuner_frequency = 0;
|
|
state->symbol_rate = 0;
|
|
state->fec_inner = 0;
|
|
state->errmode = STATUS_BER;
|
|
|
|
stv0288_writeregI(state, 0x41, 0x04);
|
|
msleep(200);
|
|
id = stv0288_readreg(state, 0x00);
|
|
dprintk("stv0288 id %x\n", id);
|
|
|
|
/* register 0x00 contains 0x11 for STV0288 */
|
|
if (id != 0x11)
|
|
goto error;
|
|
|
|
/* create dvb_frontend */
|
|
memcpy(&state->frontend.ops, &stv0288_ops,
|
|
sizeof(struct dvb_frontend_ops));
|
|
state->frontend.demodulator_priv = state;
|
|
return &state->frontend;
|
|
|
|
error:
|
|
kfree(state);
|
|
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL(stv0288_attach);
|
|
|
|
module_param(debug_legacy_dish_switch, int, 0444);
|
|
MODULE_PARM_DESC(debug_legacy_dish_switch,
|
|
"Enable timing analysis for Dish Network legacy switches");
|
|
|
|
module_param(debug, int, 0644);
|
|
MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
|
|
|
|
MODULE_DESCRIPTION("ST STV0288 DVB Demodulator driver");
|
|
MODULE_AUTHOR("Georg Acher, Bob Liu, Igor liplianin");
|
|
MODULE_LICENSE("GPL");
|
|
|