mirror of https://gitee.com/openkylin/linux.git
537 lines
11 KiB
C
537 lines
11 KiB
C
/*
|
|
* ISDB-T driver for VA1J5JF8007/VA1J5JF8011
|
|
*
|
|
* Copyright (C) 2009 HIRANO Takahito <hiranotaka@zng.info>
|
|
*
|
|
* based on pt1dvr - http://pt1dvr.sourceforge.jp/
|
|
* by Tomoaki Ishikawa <tomy@users.sourceforge.jp>
|
|
*
|
|
* 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, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/i2c.h>
|
|
#include "dvb_frontend.h"
|
|
#include "dvb_math.h"
|
|
#include "va1j5jf8007t.h"
|
|
|
|
enum va1j5jf8007t_tune_state {
|
|
VA1J5JF8007T_IDLE,
|
|
VA1J5JF8007T_SET_FREQUENCY,
|
|
VA1J5JF8007T_CHECK_FREQUENCY,
|
|
VA1J5JF8007T_SET_MODULATION,
|
|
VA1J5JF8007T_CHECK_MODULATION,
|
|
VA1J5JF8007T_TRACK,
|
|
VA1J5JF8007T_ABORT,
|
|
};
|
|
|
|
struct va1j5jf8007t_state {
|
|
const struct va1j5jf8007t_config *config;
|
|
struct i2c_adapter *adap;
|
|
struct dvb_frontend fe;
|
|
enum va1j5jf8007t_tune_state tune_state;
|
|
};
|
|
|
|
static int va1j5jf8007t_read_snr(struct dvb_frontend *fe, u16 *snr)
|
|
{
|
|
struct va1j5jf8007t_state *state;
|
|
u8 addr;
|
|
int i;
|
|
u8 write_buf[1], read_buf[1];
|
|
struct i2c_msg msgs[2];
|
|
s32 word, x, y;
|
|
|
|
state = fe->demodulator_priv;
|
|
addr = state->config->demod_address;
|
|
|
|
word = 0;
|
|
for (i = 0; i < 3; i++) {
|
|
write_buf[0] = 0x8b + i;
|
|
|
|
msgs[0].addr = addr;
|
|
msgs[0].flags = 0;
|
|
msgs[0].len = sizeof(write_buf);
|
|
msgs[0].buf = write_buf;
|
|
|
|
msgs[1].addr = addr;
|
|
msgs[1].flags = I2C_M_RD;
|
|
msgs[1].len = sizeof(read_buf);
|
|
msgs[1].buf = read_buf;
|
|
|
|
if (i2c_transfer(state->adap, msgs, 2) != 2)
|
|
return -EREMOTEIO;
|
|
|
|
word <<= 8;
|
|
word |= read_buf[0];
|
|
}
|
|
|
|
if (!word)
|
|
return -EIO;
|
|
|
|
x = 10 * (intlog10(0x540000 * 100 / word) - (2 << 24));
|
|
y = (24ll << 46) / 1000000;
|
|
y = ((s64)y * x >> 30) - (16ll << 40) / 10000;
|
|
y = ((s64)y * x >> 29) + (398ll << 35) / 10000;
|
|
y = ((s64)y * x >> 30) + (5491ll << 29) / 10000;
|
|
y = ((s64)y * x >> 30) + (30965ll << 23) / 10000;
|
|
*snr = y >> 15;
|
|
return 0;
|
|
}
|
|
|
|
static int va1j5jf8007t_get_frontend_algo(struct dvb_frontend *fe)
|
|
{
|
|
return DVBFE_ALGO_HW;
|
|
}
|
|
|
|
static int
|
|
va1j5jf8007t_read_status(struct dvb_frontend *fe, enum fe_status *status)
|
|
{
|
|
struct va1j5jf8007t_state *state;
|
|
|
|
state = fe->demodulator_priv;
|
|
|
|
switch (state->tune_state) {
|
|
case VA1J5JF8007T_IDLE:
|
|
case VA1J5JF8007T_SET_FREQUENCY:
|
|
case VA1J5JF8007T_CHECK_FREQUENCY:
|
|
*status = 0;
|
|
return 0;
|
|
|
|
|
|
case VA1J5JF8007T_SET_MODULATION:
|
|
case VA1J5JF8007T_CHECK_MODULATION:
|
|
case VA1J5JF8007T_ABORT:
|
|
*status |= FE_HAS_SIGNAL;
|
|
return 0;
|
|
|
|
case VA1J5JF8007T_TRACK:
|
|
*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK;
|
|
return 0;
|
|
}
|
|
|
|
BUG();
|
|
}
|
|
|
|
struct va1j5jf8007t_cb_map {
|
|
u32 frequency;
|
|
u8 cb;
|
|
};
|
|
|
|
static const struct va1j5jf8007t_cb_map va1j5jf8007t_cb_maps[] = {
|
|
{ 90000000, 0x80 },
|
|
{ 140000000, 0x81 },
|
|
{ 170000000, 0xa1 },
|
|
{ 220000000, 0x62 },
|
|
{ 330000000, 0xa2 },
|
|
{ 402000000, 0xe2 },
|
|
{ 450000000, 0x64 },
|
|
{ 550000000, 0x84 },
|
|
{ 600000000, 0xa4 },
|
|
{ 700000000, 0xc4 },
|
|
};
|
|
|
|
static u8 va1j5jf8007t_lookup_cb(u32 frequency)
|
|
{
|
|
int i;
|
|
const struct va1j5jf8007t_cb_map *map;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(va1j5jf8007t_cb_maps); i++) {
|
|
map = &va1j5jf8007t_cb_maps[i];
|
|
if (frequency < map->frequency)
|
|
return map->cb;
|
|
}
|
|
return 0xe4;
|
|
}
|
|
|
|
static int va1j5jf8007t_set_frequency(struct va1j5jf8007t_state *state)
|
|
{
|
|
u32 frequency;
|
|
u16 word;
|
|
u8 buf[6];
|
|
struct i2c_msg msg;
|
|
|
|
frequency = state->fe.dtv_property_cache.frequency;
|
|
|
|
word = (frequency + 71428) / 142857 + 399;
|
|
buf[0] = 0xfe;
|
|
buf[1] = 0xc2;
|
|
buf[2] = word >> 8;
|
|
buf[3] = word;
|
|
buf[4] = 0x80;
|
|
buf[5] = va1j5jf8007t_lookup_cb(frequency);
|
|
|
|
msg.addr = state->config->demod_address;
|
|
msg.flags = 0;
|
|
msg.len = sizeof(buf);
|
|
msg.buf = buf;
|
|
|
|
if (i2c_transfer(state->adap, &msg, 1) != 1)
|
|
return -EREMOTEIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
va1j5jf8007t_check_frequency(struct va1j5jf8007t_state *state, int *lock)
|
|
{
|
|
u8 addr;
|
|
u8 write_buf[2], read_buf[1];
|
|
struct i2c_msg msgs[2];
|
|
|
|
addr = state->config->demod_address;
|
|
|
|
write_buf[0] = 0xfe;
|
|
write_buf[1] = 0xc3;
|
|
|
|
msgs[0].addr = addr;
|
|
msgs[0].flags = 0;
|
|
msgs[0].len = sizeof(write_buf);
|
|
msgs[0].buf = write_buf;
|
|
|
|
msgs[1].addr = addr;
|
|
msgs[1].flags = I2C_M_RD;
|
|
msgs[1].len = sizeof(read_buf);
|
|
msgs[1].buf = read_buf;
|
|
|
|
if (i2c_transfer(state->adap, msgs, 2) != 2)
|
|
return -EREMOTEIO;
|
|
|
|
*lock = read_buf[0] & 0x40;
|
|
return 0;
|
|
}
|
|
|
|
static int va1j5jf8007t_set_modulation(struct va1j5jf8007t_state *state)
|
|
{
|
|
u8 buf[2];
|
|
struct i2c_msg msg;
|
|
|
|
buf[0] = 0x01;
|
|
buf[1] = 0x40;
|
|
|
|
msg.addr = state->config->demod_address;
|
|
msg.flags = 0;
|
|
msg.len = sizeof(buf);
|
|
msg.buf = buf;
|
|
|
|
if (i2c_transfer(state->adap, &msg, 1) != 1)
|
|
return -EREMOTEIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int va1j5jf8007t_check_modulation(struct va1j5jf8007t_state *state,
|
|
int *lock, int *retry)
|
|
{
|
|
u8 addr;
|
|
u8 write_buf[1], read_buf[1];
|
|
struct i2c_msg msgs[2];
|
|
|
|
addr = state->config->demod_address;
|
|
|
|
write_buf[0] = 0x80;
|
|
|
|
msgs[0].addr = addr;
|
|
msgs[0].flags = 0;
|
|
msgs[0].len = sizeof(write_buf);
|
|
msgs[0].buf = write_buf;
|
|
|
|
msgs[1].addr = addr;
|
|
msgs[1].flags = I2C_M_RD;
|
|
msgs[1].len = sizeof(read_buf);
|
|
msgs[1].buf = read_buf;
|
|
|
|
if (i2c_transfer(state->adap, msgs, 2) != 2)
|
|
return -EREMOTEIO;
|
|
|
|
*lock = !(read_buf[0] & 0x10);
|
|
*retry = read_buf[0] & 0x80;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
va1j5jf8007t_tune(struct dvb_frontend *fe,
|
|
bool re_tune,
|
|
unsigned int mode_flags, unsigned int *delay,
|
|
enum fe_status *status)
|
|
{
|
|
struct va1j5jf8007t_state *state;
|
|
int ret;
|
|
int lock = 0, retry = 0;
|
|
|
|
state = fe->demodulator_priv;
|
|
|
|
if (re_tune)
|
|
state->tune_state = VA1J5JF8007T_SET_FREQUENCY;
|
|
|
|
switch (state->tune_state) {
|
|
case VA1J5JF8007T_IDLE:
|
|
*delay = 3 * HZ;
|
|
*status = 0;
|
|
return 0;
|
|
|
|
case VA1J5JF8007T_SET_FREQUENCY:
|
|
ret = va1j5jf8007t_set_frequency(state);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
state->tune_state = VA1J5JF8007T_CHECK_FREQUENCY;
|
|
*delay = 0;
|
|
*status = 0;
|
|
return 0;
|
|
|
|
case VA1J5JF8007T_CHECK_FREQUENCY:
|
|
ret = va1j5jf8007t_check_frequency(state, &lock);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!lock) {
|
|
*delay = (HZ + 999) / 1000;
|
|
*status = 0;
|
|
return 0;
|
|
}
|
|
|
|
state->tune_state = VA1J5JF8007T_SET_MODULATION;
|
|
*delay = 0;
|
|
*status = FE_HAS_SIGNAL;
|
|
return 0;
|
|
|
|
case VA1J5JF8007T_SET_MODULATION:
|
|
ret = va1j5jf8007t_set_modulation(state);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
state->tune_state = VA1J5JF8007T_CHECK_MODULATION;
|
|
*delay = 0;
|
|
*status = FE_HAS_SIGNAL;
|
|
return 0;
|
|
|
|
case VA1J5JF8007T_CHECK_MODULATION:
|
|
ret = va1j5jf8007t_check_modulation(state, &lock, &retry);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!lock) {
|
|
if (!retry) {
|
|
state->tune_state = VA1J5JF8007T_ABORT;
|
|
*delay = 3 * HZ;
|
|
*status = FE_HAS_SIGNAL;
|
|
return 0;
|
|
}
|
|
*delay = (HZ + 999) / 1000;
|
|
*status = FE_HAS_SIGNAL;
|
|
return 0;
|
|
}
|
|
|
|
state->tune_state = VA1J5JF8007T_TRACK;
|
|
/* fall through */
|
|
|
|
case VA1J5JF8007T_TRACK:
|
|
*delay = 3 * HZ;
|
|
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK;
|
|
return 0;
|
|
|
|
case VA1J5JF8007T_ABORT:
|
|
*delay = 3 * HZ;
|
|
*status = FE_HAS_SIGNAL;
|
|
return 0;
|
|
}
|
|
|
|
BUG();
|
|
}
|
|
|
|
static int va1j5jf8007t_init_frequency(struct va1j5jf8007t_state *state)
|
|
{
|
|
u8 buf[7];
|
|
struct i2c_msg msg;
|
|
|
|
buf[0] = 0xfe;
|
|
buf[1] = 0xc2;
|
|
buf[2] = 0x01;
|
|
buf[3] = 0x8f;
|
|
buf[4] = 0xc1;
|
|
buf[5] = 0x80;
|
|
buf[6] = 0x80;
|
|
|
|
msg.addr = state->config->demod_address;
|
|
msg.flags = 0;
|
|
msg.len = sizeof(buf);
|
|
msg.buf = buf;
|
|
|
|
if (i2c_transfer(state->adap, &msg, 1) != 1)
|
|
return -EREMOTEIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int va1j5jf8007t_set_sleep(struct va1j5jf8007t_state *state, int sleep)
|
|
{
|
|
u8 buf[2];
|
|
struct i2c_msg msg;
|
|
|
|
buf[0] = 0x03;
|
|
buf[1] = sleep ? 0x90 : 0x80;
|
|
|
|
msg.addr = state->config->demod_address;
|
|
msg.flags = 0;
|
|
msg.len = sizeof(buf);
|
|
msg.buf = buf;
|
|
|
|
if (i2c_transfer(state->adap, &msg, 1) != 1)
|
|
return -EREMOTEIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int va1j5jf8007t_sleep(struct dvb_frontend *fe)
|
|
{
|
|
struct va1j5jf8007t_state *state;
|
|
int ret;
|
|
|
|
state = fe->demodulator_priv;
|
|
|
|
ret = va1j5jf8007t_init_frequency(state);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return va1j5jf8007t_set_sleep(state, 1);
|
|
}
|
|
|
|
static int va1j5jf8007t_init(struct dvb_frontend *fe)
|
|
{
|
|
struct va1j5jf8007t_state *state;
|
|
|
|
state = fe->demodulator_priv;
|
|
state->tune_state = VA1J5JF8007T_IDLE;
|
|
|
|
return va1j5jf8007t_set_sleep(state, 0);
|
|
}
|
|
|
|
static void va1j5jf8007t_release(struct dvb_frontend *fe)
|
|
{
|
|
struct va1j5jf8007t_state *state;
|
|
state = fe->demodulator_priv;
|
|
kfree(state);
|
|
}
|
|
|
|
static struct dvb_frontend_ops va1j5jf8007t_ops = {
|
|
.delsys = { SYS_ISDBT },
|
|
.info = {
|
|
.name = "VA1J5JF8007/VA1J5JF8011 ISDB-T",
|
|
.frequency_min = 90000000,
|
|
.frequency_max = 770000000,
|
|
.frequency_stepsize = 142857,
|
|
.caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_AUTO |
|
|
FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO |
|
|
FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_HIERARCHY_AUTO,
|
|
},
|
|
|
|
.read_snr = va1j5jf8007t_read_snr,
|
|
.get_frontend_algo = va1j5jf8007t_get_frontend_algo,
|
|
.read_status = va1j5jf8007t_read_status,
|
|
.tune = va1j5jf8007t_tune,
|
|
.sleep = va1j5jf8007t_sleep,
|
|
.init = va1j5jf8007t_init,
|
|
.release = va1j5jf8007t_release,
|
|
};
|
|
|
|
static const u8 va1j5jf8007t_20mhz_prepare_bufs[][2] = {
|
|
{0x03, 0x90}, {0x14, 0x8f}, {0x1c, 0x2a}, {0x1d, 0xa8}, {0x1e, 0xa2},
|
|
{0x22, 0x83}, {0x31, 0x0d}, {0x32, 0xe0}, {0x39, 0xd3}, {0x3a, 0x00},
|
|
{0x5c, 0x40}, {0x5f, 0x80}, {0x75, 0x02}, {0x76, 0x4e}, {0x77, 0x03},
|
|
{0xef, 0x01}
|
|
};
|
|
|
|
static const u8 va1j5jf8007t_25mhz_prepare_bufs[][2] = {
|
|
{0x03, 0x90}, {0x1c, 0x2a}, {0x1d, 0xa8}, {0x1e, 0xa2}, {0x22, 0x83},
|
|
{0x3a, 0x00}, {0x5c, 0x40}, {0x5f, 0x80}, {0x75, 0x0a}, {0x76, 0x4c},
|
|
{0x77, 0x03}, {0xef, 0x01}
|
|
};
|
|
|
|
int va1j5jf8007t_prepare(struct dvb_frontend *fe)
|
|
{
|
|
struct va1j5jf8007t_state *state;
|
|
const u8 (*bufs)[2];
|
|
int size;
|
|
u8 buf[2];
|
|
struct i2c_msg msg;
|
|
int i;
|
|
|
|
state = fe->demodulator_priv;
|
|
|
|
switch (state->config->frequency) {
|
|
case VA1J5JF8007T_20MHZ:
|
|
bufs = va1j5jf8007t_20mhz_prepare_bufs;
|
|
size = ARRAY_SIZE(va1j5jf8007t_20mhz_prepare_bufs);
|
|
break;
|
|
case VA1J5JF8007T_25MHZ:
|
|
bufs = va1j5jf8007t_25mhz_prepare_bufs;
|
|
size = ARRAY_SIZE(va1j5jf8007t_25mhz_prepare_bufs);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
msg.addr = state->config->demod_address;
|
|
msg.flags = 0;
|
|
msg.len = sizeof(buf);
|
|
msg.buf = buf;
|
|
|
|
for (i = 0; i < size; i++) {
|
|
memcpy(buf, bufs[i], sizeof(buf));
|
|
if (i2c_transfer(state->adap, &msg, 1) != 1)
|
|
return -EREMOTEIO;
|
|
}
|
|
|
|
return va1j5jf8007t_init_frequency(state);
|
|
}
|
|
|
|
struct dvb_frontend *
|
|
va1j5jf8007t_attach(const struct va1j5jf8007t_config *config,
|
|
struct i2c_adapter *adap)
|
|
{
|
|
struct va1j5jf8007t_state *state;
|
|
struct dvb_frontend *fe;
|
|
u8 buf[2];
|
|
struct i2c_msg msg;
|
|
|
|
state = kzalloc(sizeof(struct va1j5jf8007t_state), GFP_KERNEL);
|
|
if (!state)
|
|
return NULL;
|
|
|
|
state->config = config;
|
|
state->adap = adap;
|
|
|
|
fe = &state->fe;
|
|
memcpy(&fe->ops, &va1j5jf8007t_ops, sizeof(struct dvb_frontend_ops));
|
|
fe->demodulator_priv = state;
|
|
|
|
buf[0] = 0x01;
|
|
buf[1] = 0x80;
|
|
|
|
msg.addr = state->config->demod_address;
|
|
msg.flags = 0;
|
|
msg.len = sizeof(buf);
|
|
msg.buf = buf;
|
|
|
|
if (i2c_transfer(state->adap, &msg, 1) != 1) {
|
|
kfree(state);
|
|
return NULL;
|
|
}
|
|
|
|
return fe;
|
|
}
|