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linux/drivers/media/pci/pt1/va1j5jf8007s.c
Sakari Ailus bcb63314e2 [media] media: Drop FSF's postal address from the source code files 
Drop the FSF's postal address from the source code files that typically
contain mostly the license text. Of the 628 removed instances, 578 are
outdated.

The patch has been created with the following command without manual edits:

git grep -l "675 Mass Ave\|59 Temple Place\|51 Franklin St" -- \
	drivers/media/ include/media|while read i; do i=$i perl -e '
open(F,"< $ENV{i}");
$a=join("", <F>);
$a =~ s/[ \t]*\*\n.*You should.*\n.*along with.*\n.*(\n.*USA.*$)?\n//m
	&& $a =~ s/(^.*)Or, (point your browser to) /$1To obtain the license, $2\n$1/m;
close(F);
open(F, "> $ENV{i}");
print F $a;
close(F);'; done

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
2017-01-27 11:38:09 -02:00

733 lines
15 KiB
C
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/*
* ISDB-S 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.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include "dvb_frontend.h"
#include "va1j5jf8007s.h"
enum va1j5jf8007s_tune_state {
VA1J5JF8007S_IDLE,
VA1J5JF8007S_SET_FREQUENCY_1,
VA1J5JF8007S_SET_FREQUENCY_2,
VA1J5JF8007S_SET_FREQUENCY_3,
VA1J5JF8007S_CHECK_FREQUENCY,
VA1J5JF8007S_SET_MODULATION,
VA1J5JF8007S_CHECK_MODULATION,
VA1J5JF8007S_SET_TS_ID,
VA1J5JF8007S_CHECK_TS_ID,
VA1J5JF8007S_TRACK,
};
struct va1j5jf8007s_state {
const struct va1j5jf8007s_config *config;
struct i2c_adapter *adap;
struct dvb_frontend fe;
enum va1j5jf8007s_tune_state tune_state;
};
static int va1j5jf8007s_read_snr(struct dvb_frontend *fe, u16 *snr)
{
struct va1j5jf8007s_state *state;
u8 addr;
int i;
u8 write_buf[1], read_buf[1];
struct i2c_msg msgs[2];
s32 word, x1, x2, x3, x4, x5, y;
state = fe->demodulator_priv;
addr = state->config->demod_address;
word = 0;
for (i = 0; i < 2; i++) {
write_buf[0] = 0xbc + 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];
}
word -= 3000;
if (word < 0)
word = 0;
x1 = int_sqrt(word << 16) * ((15625ll << 21) / 1000000);
x2 = (s64)x1 * x1 >> 31;
x3 = (s64)x2 * x1 >> 31;
x4 = (s64)x2 * x2 >> 31;
x5 = (s64)x4 * x1 >> 31;
y = (58857ll << 23) / 1000;
y -= (s64)x1 * ((89565ll << 24) / 1000) >> 30;
y += (s64)x2 * ((88977ll << 24) / 1000) >> 28;
y -= (s64)x3 * ((50259ll << 25) / 1000) >> 27;
y += (s64)x4 * ((14341ll << 27) / 1000) >> 27;
y -= (s64)x5 * ((16346ll << 30) / 10000) >> 28;
*snr = y < 0 ? 0 : y >> 15;
return 0;
}
static int va1j5jf8007s_get_frontend_algo(struct dvb_frontend *fe)
{
return DVBFE_ALGO_HW;
}
static int
va1j5jf8007s_read_status(struct dvb_frontend *fe, enum fe_status *status)
{
struct va1j5jf8007s_state *state;
state = fe->demodulator_priv;
switch (state->tune_state) {
case VA1J5JF8007S_IDLE:
case VA1J5JF8007S_SET_FREQUENCY_1:
case VA1J5JF8007S_SET_FREQUENCY_2:
case VA1J5JF8007S_SET_FREQUENCY_3:
case VA1J5JF8007S_CHECK_FREQUENCY:
*status = 0;
return 0;
case VA1J5JF8007S_SET_MODULATION:
case VA1J5JF8007S_CHECK_MODULATION:
*status |= FE_HAS_SIGNAL;
return 0;
case VA1J5JF8007S_SET_TS_ID:
case VA1J5JF8007S_CHECK_TS_ID:
*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER;
return 0;
case VA1J5JF8007S_TRACK:
*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK;
return 0;
}
BUG();
}
struct va1j5jf8007s_cb_map {
u32 frequency;
u8 cb;
};
static const struct va1j5jf8007s_cb_map va1j5jf8007s_cb_maps[] = {
{ 986000, 0xb2 },
{ 1072000, 0xd2 },
{ 1154000, 0xe2 },
{ 1291000, 0x20 },
{ 1447000, 0x40 },
{ 1615000, 0x60 },
{ 1791000, 0x80 },
{ 1972000, 0xa0 },
};
static u8 va1j5jf8007s_lookup_cb(u32 frequency)
{
int i;
const struct va1j5jf8007s_cb_map *map;
for (i = 0; i < ARRAY_SIZE(va1j5jf8007s_cb_maps); i++) {
map = &va1j5jf8007s_cb_maps[i];
if (frequency < map->frequency)
return map->cb;
}
return 0xc0;
}
static int va1j5jf8007s_set_frequency_1(struct va1j5jf8007s_state *state)
{
u32 frequency;
u16 word;
u8 buf[6];
struct i2c_msg msg;
frequency = state->fe.dtv_property_cache.frequency;
word = (frequency + 500) / 1000;
if (frequency < 1072000)
word = (word << 1 & ~0x1f) | (word & 0x0f);
buf[0] = 0xfe;
buf[1] = 0xc0;
buf[2] = 0x40 | word >> 8;
buf[3] = word;
buf[4] = 0xe0;
buf[5] = va1j5jf8007s_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 va1j5jf8007s_set_frequency_2(struct va1j5jf8007s_state *state)
{
u8 buf[3];
struct i2c_msg msg;
buf[0] = 0xfe;
buf[1] = 0xc0;
buf[2] = 0xe4;
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 va1j5jf8007s_set_frequency_3(struct va1j5jf8007s_state *state)
{
u32 frequency;
u8 buf[4];
struct i2c_msg msg;
frequency = state->fe.dtv_property_cache.frequency;
buf[0] = 0xfe;
buf[1] = 0xc0;
buf[2] = 0xf4;
buf[3] = va1j5jf8007s_lookup_cb(frequency) | 0x4;
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
va1j5jf8007s_check_frequency(struct va1j5jf8007s_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] = 0xc1;
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 va1j5jf8007s_set_modulation(struct va1j5jf8007s_state *state)
{
u8 buf[2];
struct i2c_msg msg;
buf[0] = 0x03;
buf[1] = 0x01;
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
va1j5jf8007s_check_modulation(struct va1j5jf8007s_state *state, int *lock)
{
u8 addr;
u8 write_buf[1], read_buf[1];
struct i2c_msg msgs[2];
addr = state->config->demod_address;
write_buf[0] = 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] & 0x10);
return 0;
}
static int
va1j5jf8007s_set_ts_id(struct va1j5jf8007s_state *state)
{
u32 ts_id;
u8 buf[3];
struct i2c_msg msg;
ts_id = state->fe.dtv_property_cache.stream_id;
if (!ts_id || ts_id == NO_STREAM_ID_FILTER)
return 0;
buf[0] = 0x8f;
buf[1] = ts_id >> 8;
buf[2] = ts_id;
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
va1j5jf8007s_check_ts_id(struct va1j5jf8007s_state *state, int *lock)
{
u8 addr;
u8 write_buf[1], read_buf[2];
struct i2c_msg msgs[2];
u32 ts_id;
ts_id = state->fe.dtv_property_cache.stream_id;
if (!ts_id || ts_id == NO_STREAM_ID_FILTER) {
*lock = 1;
return 0;
}
addr = state->config->demod_address;
write_buf[0] = 0xe6;
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] << 8 | read_buf[1]) == ts_id;
return 0;
}
static int
va1j5jf8007s_tune(struct dvb_frontend *fe,
bool re_tune,
unsigned int mode_flags, unsigned int *delay,
enum fe_status *status)
{
struct va1j5jf8007s_state *state;
int ret;
int lock = 0;
state = fe->demodulator_priv;
if (re_tune)
state->tune_state = VA1J5JF8007S_SET_FREQUENCY_1;
switch (state->tune_state) {
case VA1J5JF8007S_IDLE:
*delay = 3 * HZ;
*status = 0;
return 0;
case VA1J5JF8007S_SET_FREQUENCY_1:
ret = va1j5jf8007s_set_frequency_1(state);
if (ret < 0)
return ret;
state->tune_state = VA1J5JF8007S_SET_FREQUENCY_2;
*delay = 0;
*status = 0;
return 0;
case VA1J5JF8007S_SET_FREQUENCY_2:
ret = va1j5jf8007s_set_frequency_2(state);
if (ret < 0)
return ret;
state->tune_state = VA1J5JF8007S_SET_FREQUENCY_3;
*delay = (HZ + 99) / 100;
*status = 0;
return 0;
case VA1J5JF8007S_SET_FREQUENCY_3:
ret = va1j5jf8007s_set_frequency_3(state);
if (ret < 0)
return ret;
state->tune_state = VA1J5JF8007S_CHECK_FREQUENCY;
*delay = 0;
*status = 0;
return 0;
case VA1J5JF8007S_CHECK_FREQUENCY:
ret = va1j5jf8007s_check_frequency(state, &lock);
if (ret < 0)
return ret;
if (!lock) {
*delay = (HZ + 999) / 1000;
*status = 0;
return 0;
}
state->tune_state = VA1J5JF8007S_SET_MODULATION;
*delay = 0;
*status = FE_HAS_SIGNAL;
return 0;
case VA1J5JF8007S_SET_MODULATION:
ret = va1j5jf8007s_set_modulation(state);
if (ret < 0)
return ret;
state->tune_state = VA1J5JF8007S_CHECK_MODULATION;
*delay = 0;
*status = FE_HAS_SIGNAL;
return 0;
case VA1J5JF8007S_CHECK_MODULATION:
ret = va1j5jf8007s_check_modulation(state, &lock);
if (ret < 0)
return ret;
if (!lock) {
*delay = (HZ + 49) / 50;
*status = FE_HAS_SIGNAL;
return 0;
}
state->tune_state = VA1J5JF8007S_SET_TS_ID;
*delay = 0;
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
return 0;
case VA1J5JF8007S_SET_TS_ID:
ret = va1j5jf8007s_set_ts_id(state);
if (ret < 0)
return ret;
state->tune_state = VA1J5JF8007S_CHECK_TS_ID;
return 0;
case VA1J5JF8007S_CHECK_TS_ID:
ret = va1j5jf8007s_check_ts_id(state, &lock);
if (ret < 0)
return ret;
if (!lock) {
*delay = (HZ + 99) / 100;
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
return 0;
}
state->tune_state = VA1J5JF8007S_TRACK;
/* fall through */
case VA1J5JF8007S_TRACK:
*delay = 3 * HZ;
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK;
return 0;
}
BUG();
}
static int va1j5jf8007s_init_frequency(struct va1j5jf8007s_state *state)
{
u8 buf[4];
struct i2c_msg msg;
buf[0] = 0xfe;
buf[1] = 0xc0;
buf[2] = 0xf0;
buf[3] = 0x04;
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 va1j5jf8007s_set_sleep(struct va1j5jf8007s_state *state, int sleep)
{
u8 buf[2];
struct i2c_msg msg;
buf[0] = 0x17;
buf[1] = sleep ? 0x01 : 0x00;
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 va1j5jf8007s_sleep(struct dvb_frontend *fe)
{
struct va1j5jf8007s_state *state;
int ret;
state = fe->demodulator_priv;
ret = va1j5jf8007s_init_frequency(state);
if (ret < 0)
return ret;
return va1j5jf8007s_set_sleep(state, 1);
}
static int va1j5jf8007s_init(struct dvb_frontend *fe)
{
struct va1j5jf8007s_state *state;
state = fe->demodulator_priv;
state->tune_state = VA1J5JF8007S_IDLE;
return va1j5jf8007s_set_sleep(state, 0);
}
static void va1j5jf8007s_release(struct dvb_frontend *fe)
{
struct va1j5jf8007s_state *state;
state = fe->demodulator_priv;
kfree(state);
}
static const struct dvb_frontend_ops va1j5jf8007s_ops = {
.delsys = { SYS_ISDBS },
.info = {
.name = "VA1J5JF8007/VA1J5JF8011 ISDB-S",
.frequency_min = 950000,
.frequency_max = 2150000,
.frequency_stepsize = 1000,
.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 |
FE_CAN_MULTISTREAM,
},
.read_snr = va1j5jf8007s_read_snr,
.get_frontend_algo = va1j5jf8007s_get_frontend_algo,
.read_status = va1j5jf8007s_read_status,
.tune = va1j5jf8007s_tune,
.sleep = va1j5jf8007s_sleep,
.init = va1j5jf8007s_init,
.release = va1j5jf8007s_release,
};
static int va1j5jf8007s_prepare_1(struct va1j5jf8007s_state *state)
{
u8 addr;
u8 write_buf[1], read_buf[1];
struct i2c_msg msgs[2];
addr = state->config->demod_address;
write_buf[0] = 0x07;
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;
if (read_buf[0] != 0x41)
return -EIO;
return 0;
}
static const u8 va1j5jf8007s_20mhz_prepare_bufs[][2] = {
{0x04, 0x02}, {0x0d, 0x55}, {0x11, 0x40}, {0x13, 0x80}, {0x17, 0x01},
{0x1c, 0x0a}, {0x1d, 0xaa}, {0x1e, 0x20}, {0x1f, 0x88}, {0x51, 0xb0},
{0x52, 0x89}, {0x53, 0xb3}, {0x5a, 0x2d}, {0x5b, 0xd3}, {0x85, 0x69},
{0x87, 0x04}, {0x8e, 0x02}, {0xa3, 0xf7}, {0xa5, 0xc0},
};
static const u8 va1j5jf8007s_25mhz_prepare_bufs[][2] = {
{0x04, 0x02}, {0x11, 0x40}, {0x13, 0x80}, {0x17, 0x01}, {0x1c, 0x0a},
{0x1d, 0xaa}, {0x1e, 0x20}, {0x1f, 0x88}, {0x51, 0xb0}, {0x52, 0x89},
{0x53, 0xb3}, {0x5a, 0x2d}, {0x5b, 0xd3}, {0x85, 0x69}, {0x87, 0x04},
{0x8e, 0x26}, {0xa3, 0xf7}, {0xa5, 0xc0},
};
static int va1j5jf8007s_prepare_2(struct va1j5jf8007s_state *state)
{
const u8 (*bufs)[2];
int size;
u8 addr;
u8 buf[2];
struct i2c_msg msg;
int i;
switch (state->config->frequency) {
case VA1J5JF8007S_20MHZ:
bufs = va1j5jf8007s_20mhz_prepare_bufs;
size = ARRAY_SIZE(va1j5jf8007s_20mhz_prepare_bufs);
break;
case VA1J5JF8007S_25MHZ:
bufs = va1j5jf8007s_25mhz_prepare_bufs;
size = ARRAY_SIZE(va1j5jf8007s_25mhz_prepare_bufs);
break;
default:
return -EINVAL;
}
addr = state->config->demod_address;
msg.addr = addr;
msg.flags = 0;
msg.len = 2;
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 0;
}
/* must be called after va1j5jf8007t_attach */
int va1j5jf8007s_prepare(struct dvb_frontend *fe)
{
struct va1j5jf8007s_state *state;
int ret;
state = fe->demodulator_priv;
ret = va1j5jf8007s_prepare_1(state);
if (ret < 0)
return ret;
ret = va1j5jf8007s_prepare_2(state);
if (ret < 0)
return ret;
return va1j5jf8007s_init_frequency(state);
}
struct dvb_frontend *
va1j5jf8007s_attach(const struct va1j5jf8007s_config *config,
struct i2c_adapter *adap)
{
struct va1j5jf8007s_state *state;
struct dvb_frontend *fe;
u8 buf[2];
struct i2c_msg msg;
state = kzalloc(sizeof(struct va1j5jf8007s_state), GFP_KERNEL);
if (!state)
return NULL;
state->config = config;
state->adap = adap;
fe = &state->fe;
memcpy(&fe->ops, &va1j5jf8007s_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;
}
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