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linux/drivers/media/pci/pt1/va1j5jf8007t.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outdated.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

533 lines
11 KiB
C
Raw Blame History

/*
* 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.
*/
#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 const 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;
}
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