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kernel_samsung_a34x-permissive/drivers/media/dvb-frontends/m88ds3103.c

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Import A346BXXU1AWB9 kernel source Android 13
2024-04-28 06:49:01 -07:00
/*
* Montage Technology M88DS3103/M88RS6000 demodulator driver
*
* Copyright (C) 2013 Antti Palosaari <crope@iki.fi>
*
* 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 "m88ds3103_priv.h"
static const struct dvb_frontend_ops m88ds3103_ops;
/* write single register with mask */
static int m88ds3103_update_bits(struct m88ds3103_dev *dev,
u8 reg, u8 mask, u8 val)
{
int ret;
u8 tmp;
/* no need for read if whole reg is written */
if (mask != 0xff) {
ret = regmap_bulk_read(dev->regmap, reg, &tmp, 1);
if (ret)
return ret;
val &= mask;
tmp &= ~mask;
val |= tmp;
}
return regmap_bulk_write(dev->regmap, reg, &val, 1);
}
/* write reg val table using reg addr auto increment */
static int m88ds3103_wr_reg_val_tab(struct m88ds3103_dev *dev,
const struct m88ds3103_reg_val *tab, int tab_len)
{
struct i2c_client *client = dev->client;
int ret, i, j;
u8 buf[83];
dev_dbg(&client->dev, "tab_len=%d\n", tab_len);
if (tab_len > 86) {
ret = -EINVAL;
goto err;
}
for (i = 0, j = 0; i < tab_len; i++, j++) {
buf[j] = tab[i].val;
if (i == tab_len - 1 || tab[i].reg != tab[i + 1].reg - 1 ||
!((j + 1) % (dev->cfg->i2c_wr_max - 1))) {
ret = regmap_bulk_write(dev->regmap, tab[i].reg - j, buf, j + 1);
if (ret)
goto err;
j = -1;
}
}
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
/*
* Get the demodulator AGC PWM voltage setting supplied to the tuner.
*/
int m88ds3103_get_agc_pwm(struct dvb_frontend *fe, u8 *_agc_pwm)
{
struct m88ds3103_dev *dev = fe->demodulator_priv;
unsigned tmp;
int ret;
ret = regmap_read(dev->regmap, 0x3f, &tmp);
if (ret == 0)
*_agc_pwm = tmp;
return ret;
}
EXPORT_SYMBOL(m88ds3103_get_agc_pwm);
static int m88ds3103_read_status(struct dvb_frontend *fe,
enum fe_status *status)
{
struct m88ds3103_dev *dev = fe->demodulator_priv;
struct i2c_client *client = dev->client;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret, i, itmp;
unsigned int utmp;
u8 buf[3];
*status = 0;
if (!dev->warm) {
ret = -EAGAIN;
goto err;
}
switch (c->delivery_system) {
case SYS_DVBS:
ret = regmap_read(dev->regmap, 0xd1, &utmp);
if (ret)
goto err;
if ((utmp & 0x07) == 0x07)
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
FE_HAS_VITERBI | FE_HAS_SYNC |
FE_HAS_LOCK;
break;
case SYS_DVBS2:
ret = regmap_read(dev->regmap, 0x0d, &utmp);
if (ret)
goto err;
if ((utmp & 0x8f) == 0x8f)
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
FE_HAS_VITERBI | FE_HAS_SYNC |
FE_HAS_LOCK;
break;
default:
dev_dbg(&client->dev, "invalid delivery_system\n");
ret = -EINVAL;
goto err;
}
dev->fe_status = *status;
dev_dbg(&client->dev, "lock=%02x status=%02x\n", utmp, *status);
/* CNR */
if (dev->fe_status & FE_HAS_VITERBI) {
unsigned int cnr, noise, signal, noise_tot, signal_tot;
cnr = 0;
/* more iterations for more accurate estimation */
#define M88DS3103_SNR_ITERATIONS 3
switch (c->delivery_system) {
case SYS_DVBS:
itmp = 0;
for (i = 0; i < M88DS3103_SNR_ITERATIONS; i++) {
ret = regmap_read(dev->regmap, 0xff, &utmp);
if (ret)
goto err;
itmp += utmp;
}
/* use of single register limits max value to 15 dB */
/* SNR(X) dB = 10 * ln(X) / ln(10) dB */
itmp = DIV_ROUND_CLOSEST(itmp, 8 * M88DS3103_SNR_ITERATIONS);
if (itmp)
cnr = div_u64((u64) 10000 * intlog2(itmp), intlog2(10));
break;
case SYS_DVBS2:
noise_tot = 0;
signal_tot = 0;
for (i = 0; i < M88DS3103_SNR_ITERATIONS; i++) {
ret = regmap_bulk_read(dev->regmap, 0x8c, buf, 3);
if (ret)
goto err;
noise = buf[1] << 6; /* [13:6] */
noise |= buf[0] & 0x3f; /* [5:0] */
noise >>= 2;
signal = buf[2] * buf[2];
signal >>= 1;
noise_tot += noise;
signal_tot += signal;
}
noise = noise_tot / M88DS3103_SNR_ITERATIONS;
signal = signal_tot / M88DS3103_SNR_ITERATIONS;
/* SNR(X) dB = 10 * log10(X) dB */
if (signal > noise) {
itmp = signal / noise;
cnr = div_u64((u64) 10000 * intlog10(itmp), (1 << 24));
}
break;
default:
dev_dbg(&client->dev, "invalid delivery_system\n");
ret = -EINVAL;
goto err;
}
if (cnr) {
c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
c->cnr.stat[0].svalue = cnr;
} else {
c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
}
} else {
c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
}
/* BER */
if (dev->fe_status & FE_HAS_LOCK) {
unsigned int utmp, post_bit_error, post_bit_count;
switch (c->delivery_system) {
case SYS_DVBS:
ret = regmap_write(dev->regmap, 0xf9, 0x04);
if (ret)
goto err;
ret = regmap_read(dev->regmap, 0xf8, &utmp);
if (ret)
goto err;
/* measurement ready? */
if (!(utmp & 0x10)) {
ret = regmap_bulk_read(dev->regmap, 0xf6, buf, 2);
if (ret)
goto err;
post_bit_error = buf[1] << 8 | buf[0] << 0;
post_bit_count = 0x800000;
dev->post_bit_error += post_bit_error;
dev->post_bit_count += post_bit_count;
dev->dvbv3_ber = post_bit_error;
/* restart measurement */
utmp |= 0x10;
ret = regmap_write(dev->regmap, 0xf8, utmp);
if (ret)
goto err;
}
break;
case SYS_DVBS2:
ret = regmap_bulk_read(dev->regmap, 0xd5, buf, 3);
if (ret)
goto err;
utmp = buf[2] << 16 | buf[1] << 8 | buf[0] << 0;
/* enough data? */
if (utmp > 4000) {
ret = regmap_bulk_read(dev->regmap, 0xf7, buf, 2);
if (ret)
goto err;
post_bit_error = buf[1] << 8 | buf[0] << 0;
post_bit_count = 32 * utmp; /* TODO: FEC */
dev->post_bit_error += post_bit_error;
dev->post_bit_count += post_bit_count;
dev->dvbv3_ber = post_bit_error;
/* restart measurement */
ret = regmap_write(dev->regmap, 0xd1, 0x01);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0xf9, 0x01);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0xf9, 0x00);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0xd1, 0x00);
if (ret)
goto err;
}
break;
default:
dev_dbg(&client->dev, "invalid delivery_system\n");
ret = -EINVAL;
goto err;
}
c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
c->post_bit_error.stat[0].uvalue = dev->post_bit_error;
c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
c->post_bit_count.stat[0].uvalue = dev->post_bit_count;
} else {
c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
}
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int m88ds3103_set_frontend(struct dvb_frontend *fe)
{
struct m88ds3103_dev *dev = fe->demodulator_priv;
struct i2c_client *client = dev->client;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret, len;
const struct m88ds3103_reg_val *init;
u8 u8tmp, u8tmp1 = 0, u8tmp2 = 0; /* silence compiler warning */
u8 buf[3];
u16 u16tmp;
u32 tuner_frequency_khz, target_mclk;
s32 s32tmp;
static const struct reg_sequence reset_buf[] = {
{0x07, 0x80}, {0x07, 0x00}
};
dev_dbg(&client->dev,
"delivery_system=%d modulation=%d frequency=%u symbol_rate=%d inversion=%d pilot=%d rolloff=%d\n",
c->delivery_system, c->modulation, c->frequency, c->symbol_rate,
c->inversion, c->pilot, c->rolloff);
if (!dev->warm) {
ret = -EAGAIN;
goto err;
}
/* reset */
ret = regmap_multi_reg_write(dev->regmap, reset_buf, 2);
if (ret)
goto err;
/* Disable demod clock path */
if (dev->chip_id == M88RS6000_CHIP_ID) {
ret = regmap_write(dev->regmap, 0x06, 0xe0);
if (ret)
goto err;
}
/* program tuner */
if (fe->ops.tuner_ops.set_params) {
ret = fe->ops.tuner_ops.set_params(fe);
if (ret)
goto err;
}
if (fe->ops.tuner_ops.get_frequency) {
ret = fe->ops.tuner_ops.get_frequency(fe, &tuner_frequency_khz);
if (ret)
goto err;
} else {
/*
* Use nominal target frequency as tuner driver does not provide
* actual frequency used. Carrier offset calculation is not
* valid.
*/
tuner_frequency_khz = c->frequency;
}
/* select M88RS6000 demod main mclk and ts mclk from tuner die. */
if (dev->chip_id == M88RS6000_CHIP_ID) {
if (c->symbol_rate > 45010000)
dev->mclk = 110250000;
else
dev->mclk = 96000000;
if (c->delivery_system == SYS_DVBS)
target_mclk = 96000000;
else
target_mclk = 144000000;
/* Enable demod clock path */
ret = regmap_write(dev->regmap, 0x06, 0x00);
if (ret)
goto err;
usleep_range(10000, 20000);
} else {
/* set M88DS3103 mclk and ts mclk. */
dev->mclk = 96000000;
switch (dev->cfg->ts_mode) {
case M88DS3103_TS_SERIAL:
case M88DS3103_TS_SERIAL_D7:
target_mclk = dev->cfg->ts_clk;
break;
case M88DS3103_TS_PARALLEL:
case M88DS3103_TS_CI:
if (c->delivery_system == SYS_DVBS)
target_mclk = 96000000;
else {
if (c->symbol_rate < 18000000)
target_mclk = 96000000;
else if (c->symbol_rate < 28000000)
target_mclk = 144000000;
else
target_mclk = 192000000;
}
break;
default:
dev_dbg(&client->dev, "invalid ts_mode\n");
ret = -EINVAL;
goto err;
}
switch (target_mclk) {
case 96000000:
u8tmp1 = 0x02; /* 0b10 */
u8tmp2 = 0x01; /* 0b01 */
break;
case 144000000:
u8tmp1 = 0x00; /* 0b00 */
u8tmp2 = 0x01; /* 0b01 */
break;
case 192000000:
u8tmp1 = 0x03; /* 0b11 */
u8tmp2 = 0x00; /* 0b00 */
break;
}
ret = m88ds3103_update_bits(dev, 0x22, 0xc0, u8tmp1 << 6);
if (ret)
goto err;
ret = m88ds3103_update_bits(dev, 0x24, 0xc0, u8tmp2 << 6);
if (ret)
goto err;
}
ret = regmap_write(dev->regmap, 0xb2, 0x01);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0x00, 0x01);
if (ret)
goto err;
switch (c->delivery_system) {
case SYS_DVBS:
if (dev->chip_id == M88RS6000_CHIP_ID) {
len = ARRAY_SIZE(m88rs6000_dvbs_init_reg_vals);
init = m88rs6000_dvbs_init_reg_vals;
} else {
len = ARRAY_SIZE(m88ds3103_dvbs_init_reg_vals);
init = m88ds3103_dvbs_init_reg_vals;
}
break;
case SYS_DVBS2:
if (dev->chip_id == M88RS6000_CHIP_ID) {
len = ARRAY_SIZE(m88rs6000_dvbs2_init_reg_vals);
init = m88rs6000_dvbs2_init_reg_vals;
} else {
len = ARRAY_SIZE(m88ds3103_dvbs2_init_reg_vals);
init = m88ds3103_dvbs2_init_reg_vals;
}
break;
default:
dev_dbg(&client->dev, "invalid delivery_system\n");
ret = -EINVAL;
goto err;
}
/* program init table */
if (c->delivery_system != dev->delivery_system) {
ret = m88ds3103_wr_reg_val_tab(dev, init, len);
if (ret)
goto err;
}
if (dev->chip_id == M88RS6000_CHIP_ID) {
if (c->delivery_system == SYS_DVBS2 &&
c->symbol_rate <= 5000000) {
ret = regmap_write(dev->regmap, 0xc0, 0x04);
if (ret)
goto err;
buf[0] = 0x09;
buf[1] = 0x22;
buf[2] = 0x88;
ret = regmap_bulk_write(dev->regmap, 0x8a, buf, 3);
if (ret)
goto err;
}
ret = m88ds3103_update_bits(dev, 0x9d, 0x08, 0x08);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0xf1, 0x01);
if (ret)
goto err;
ret = m88ds3103_update_bits(dev, 0x30, 0x80, 0x80);
if (ret)
goto err;
}
switch (dev->cfg->ts_mode) {
case M88DS3103_TS_SERIAL:
u8tmp1 = 0x00;
u8tmp = 0x06;
break;
case M88DS3103_TS_SERIAL_D7:
u8tmp1 = 0x20;
u8tmp = 0x06;
break;
case M88DS3103_TS_PARALLEL:
u8tmp = 0x02;
break;
case M88DS3103_TS_CI:
u8tmp = 0x03;
break;
default:
dev_dbg(&client->dev, "invalid ts_mode\n");
ret = -EINVAL;
goto err;
}
if (dev->cfg->ts_clk_pol)
u8tmp |= 0x40;
/* TS mode */
ret = regmap_write(dev->regmap, 0xfd, u8tmp);
if (ret)
goto err;
switch (dev->cfg->ts_mode) {
case M88DS3103_TS_SERIAL:
case M88DS3103_TS_SERIAL_D7:
ret = m88ds3103_update_bits(dev, 0x29, 0x20, u8tmp1);
if (ret)
goto err;
u16tmp = 0;
u8tmp1 = 0x3f;
u8tmp2 = 0x3f;
break;
default:
u16tmp = DIV_ROUND_UP(target_mclk, dev->cfg->ts_clk);
u8tmp1 = u16tmp / 2 - 1;
u8tmp2 = DIV_ROUND_UP(u16tmp, 2) - 1;
}
dev_dbg(&client->dev, "target_mclk=%u ts_clk=%u ts_clk_divide_ratio=%u\n",
target_mclk, dev->cfg->ts_clk, u16tmp);
/* u8tmp1[5:2] => fe[3:0], u8tmp1[1:0] => ea[7:6] */
/* u8tmp2[5:0] => ea[5:0] */
u8tmp = (u8tmp1 >> 2) & 0x0f;
ret = regmap_update_bits(dev->regmap, 0xfe, 0x0f, u8tmp);
if (ret)
goto err;
u8tmp = ((u8tmp1 & 0x03) << 6) | u8tmp2 >> 0;
ret = regmap_write(dev->regmap, 0xea, u8tmp);
if (ret)
goto err;
if (c->symbol_rate <= 3000000)
u8tmp = 0x20;
else if (c->symbol_rate <= 10000000)
u8tmp = 0x10;
else
u8tmp = 0x06;
ret = regmap_write(dev->regmap, 0xc3, 0x08);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0xc8, u8tmp);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0xc4, 0x08);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0xc7, 0x00);
if (ret)
goto err;
u16tmp = DIV_ROUND_CLOSEST_ULL((u64)c->symbol_rate * 0x10000, dev->mclk);
buf[0] = (u16tmp >> 0) & 0xff;
buf[1] = (u16tmp >> 8) & 0xff;
ret = regmap_bulk_write(dev->regmap, 0x61, buf, 2);
if (ret)
goto err;
ret = m88ds3103_update_bits(dev, 0x4d, 0x02, dev->cfg->spec_inv << 1);
if (ret)
goto err;
ret = m88ds3103_update_bits(dev, 0x30, 0x10, dev->cfg->agc_inv << 4);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0x33, dev->cfg->agc);
if (ret)
goto err;
dev_dbg(&client->dev, "carrier offset=%d\n",
(tuner_frequency_khz - c->frequency));
/* Use 32-bit calc as there is no s64 version of DIV_ROUND_CLOSEST() */
s32tmp = 0x10000 * (tuner_frequency_khz - c->frequency);
s32tmp = DIV_ROUND_CLOSEST(s32tmp, dev->mclk / 1000);
buf[0] = (s32tmp >> 0) & 0xff;
buf[1] = (s32tmp >> 8) & 0xff;
ret = regmap_bulk_write(dev->regmap, 0x5e, buf, 2);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0x00, 0x00);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0xb2, 0x00);
if (ret)
goto err;
dev->delivery_system = c->delivery_system;
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int m88ds3103_init(struct dvb_frontend *fe)
{
struct m88ds3103_dev *dev = fe->demodulator_priv;
struct i2c_client *client = dev->client;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret, len, rem;
unsigned int utmp;
const struct firmware *firmware;
const char *name;
dev_dbg(&client->dev, "\n");
/* set cold state by default */
dev->warm = false;
/* wake up device from sleep */
ret = m88ds3103_update_bits(dev, 0x08, 0x01, 0x01);
if (ret)
goto err;
ret = m88ds3103_update_bits(dev, 0x04, 0x01, 0x00);
if (ret)
goto err;
ret = m88ds3103_update_bits(dev, 0x23, 0x10, 0x00);
if (ret)
goto err;
/* firmware status */
ret = regmap_read(dev->regmap, 0xb9, &utmp);
if (ret)
goto err;
dev_dbg(&client->dev, "firmware=%02x\n", utmp);
if (utmp)
goto warm;
/* global reset, global diseqc reset, golbal fec reset */
ret = regmap_write(dev->regmap, 0x07, 0xe0);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0x07, 0x00);
if (ret)
goto err;
/* cold state - try to download firmware */
dev_info(&client->dev, "found a '%s' in cold state\n",
m88ds3103_ops.info.name);
if (dev->chip_id == M88RS6000_CHIP_ID)
name = M88RS6000_FIRMWARE;
else
name = M88DS3103_FIRMWARE;
/* request the firmware, this will block and timeout */
ret = request_firmware(&firmware, name, &client->dev);
if (ret) {
dev_err(&client->dev, "firmware file '%s' not found\n", name);
goto err;
}
dev_info(&client->dev, "downloading firmware from file '%s'\n", name);
ret = regmap_write(dev->regmap, 0xb2, 0x01);
if (ret)
goto err_release_firmware;
for (rem = firmware->size; rem > 0; rem -= (dev->cfg->i2c_wr_max - 1)) {
len = min(dev->cfg->i2c_wr_max - 1, rem);
ret = regmap_bulk_write(dev->regmap, 0xb0,
&firmware->data[firmware->size - rem],
len);
if (ret) {
dev_err(&client->dev, "firmware download failed %d\n",
ret);
goto err_release_firmware;
}
}
ret = regmap_write(dev->regmap, 0xb2, 0x00);
if (ret)
goto err_release_firmware;
release_firmware(firmware);
ret = regmap_read(dev->regmap, 0xb9, &utmp);
if (ret)
goto err;
if (!utmp) {
ret = -EINVAL;
dev_info(&client->dev, "firmware did not run\n");
goto err;
}
dev_info(&client->dev, "found a '%s' in warm state\n",
m88ds3103_ops.info.name);
dev_info(&client->dev, "firmware version: %X.%X\n",
(utmp >> 4) & 0xf, (utmp >> 0 & 0xf));
warm:
/* warm state */
dev->warm = true;
/* init stats here in order signal app which stats are supported */
c->cnr.len = 1;
c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
c->post_bit_error.len = 1;
c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
c->post_bit_count.len = 1;
c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
return 0;
err_release_firmware:
release_firmware(firmware);
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int m88ds3103_sleep(struct dvb_frontend *fe)
{
struct m88ds3103_dev *dev = fe->demodulator_priv;
struct i2c_client *client = dev->client;
int ret;
unsigned int utmp;
dev_dbg(&client->dev, "\n");
dev->fe_status = 0;
dev->delivery_system = SYS_UNDEFINED;
/* TS Hi-Z */
if (dev->chip_id == M88RS6000_CHIP_ID)
utmp = 0x29;
else
utmp = 0x27;
ret = m88ds3103_update_bits(dev, utmp, 0x01, 0x00);
if (ret)
goto err;
/* sleep */
ret = m88ds3103_update_bits(dev, 0x08, 0x01, 0x00);
if (ret)
goto err;
ret = m88ds3103_update_bits(dev, 0x04, 0x01, 0x01);
if (ret)
goto err;
ret = m88ds3103_update_bits(dev, 0x23, 0x10, 0x10);
if (ret)
goto err;
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int m88ds3103_get_frontend(struct dvb_frontend *fe,
struct dtv_frontend_properties *c)
{
struct m88ds3103_dev *dev = fe->demodulator_priv;
struct i2c_client *client = dev->client;
int ret;
u8 buf[3];
dev_dbg(&client->dev, "\n");
if (!dev->warm || !(dev->fe_status & FE_HAS_LOCK)) {
ret = 0;
goto err;
}
switch (c->delivery_system) {
case SYS_DVBS:
ret = regmap_bulk_read(dev->regmap, 0xe0, &buf[0], 1);
if (ret)
goto err;
ret = regmap_bulk_read(dev->regmap, 0xe6, &buf[1], 1);
if (ret)
goto err;
switch ((buf[0] >> 2) & 0x01) {
case 0:
c->inversion = INVERSION_OFF;
break;
case 1:
c->inversion = INVERSION_ON;
break;
}
switch ((buf[1] >> 5) & 0x07) {
case 0:
c->fec_inner = FEC_7_8;
break;
case 1:
c->fec_inner = FEC_5_6;
break;
case 2:
c->fec_inner = FEC_3_4;
break;
case 3:
c->fec_inner = FEC_2_3;
break;
case 4:
c->fec_inner = FEC_1_2;
break;
default:
dev_dbg(&client->dev, "invalid fec_inner\n");
}
c->modulation = QPSK;
break;
case SYS_DVBS2:
ret = regmap_bulk_read(dev->regmap, 0x7e, &buf[0], 1);
if (ret)
goto err;
ret = regmap_bulk_read(dev->regmap, 0x89, &buf[1], 1);
if (ret)
goto err;
ret = regmap_bulk_read(dev->regmap, 0xf2, &buf[2], 1);
if (ret)
goto err;
switch ((buf[0] >> 0) & 0x0f) {
case 2:
c->fec_inner = FEC_2_5;
break;
case 3:
c->fec_inner = FEC_1_2;
break;
case 4:
c->fec_inner = FEC_3_5;
break;
case 5:
c->fec_inner = FEC_2_3;
break;
case 6:
c->fec_inner = FEC_3_4;
break;
case 7:
c->fec_inner = FEC_4_5;
break;
case 8:
c->fec_inner = FEC_5_6;
break;
case 9:
c->fec_inner = FEC_8_9;
break;
case 10:
c->fec_inner = FEC_9_10;
break;
default:
dev_dbg(&client->dev, "invalid fec_inner\n");
}
switch ((buf[0] >> 5) & 0x01) {
case 0:
c->pilot = PILOT_OFF;
break;
case 1:
c->pilot = PILOT_ON;
break;
}
switch ((buf[0] >> 6) & 0x07) {
case 0:
c->modulation = QPSK;
break;
case 1:
c->modulation = PSK_8;
break;
case 2:
c->modulation = APSK_16;
break;
case 3:
c->modulation = APSK_32;
break;
default:
dev_dbg(&client->dev, "invalid modulation\n");
}
switch ((buf[1] >> 7) & 0x01) {
case 0:
c->inversion = INVERSION_OFF;
break;
case 1:
c->inversion = INVERSION_ON;
break;
}
switch ((buf[2] >> 0) & 0x03) {
case 0:
c->rolloff = ROLLOFF_35;
break;
case 1:
c->rolloff = ROLLOFF_25;
break;
case 2:
c->rolloff = ROLLOFF_20;
break;
default:
dev_dbg(&client->dev, "invalid rolloff\n");
}
break;
default:
dev_dbg(&client->dev, "invalid delivery_system\n");
ret = -EINVAL;
goto err;
}
ret = regmap_bulk_read(dev->regmap, 0x6d, buf, 2);
if (ret)
goto err;
c->symbol_rate = DIV_ROUND_CLOSEST_ULL((u64)(buf[1] << 8 | buf[0] << 0) * dev->mclk, 0x10000);
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int m88ds3103_read_snr(struct dvb_frontend *fe, u16 *snr)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
if (c->cnr.stat[0].scale == FE_SCALE_DECIBEL)
*snr = div_s64(c->cnr.stat[0].svalue, 100);
else
*snr = 0;
return 0;
}
static int m88ds3103_read_ber(struct dvb_frontend *fe, u32 *ber)
{
struct m88ds3103_dev *dev = fe->demodulator_priv;
*ber = dev->dvbv3_ber;
return 0;
}
static int m88ds3103_set_tone(struct dvb_frontend *fe,
enum fe_sec_tone_mode fe_sec_tone_mode)
{
struct m88ds3103_dev *dev = fe->demodulator_priv;
struct i2c_client *client = dev->client;
int ret;
unsigned int utmp, tone, reg_a1_mask;
dev_dbg(&client->dev, "fe_sec_tone_mode=%d\n", fe_sec_tone_mode);
if (!dev->warm) {
ret = -EAGAIN;
goto err;
}
switch (fe_sec_tone_mode) {
case SEC_TONE_ON:
tone = 0;
reg_a1_mask = 0x47;
break;
case SEC_TONE_OFF:
tone = 1;
reg_a1_mask = 0x00;
break;
default:
dev_dbg(&client->dev, "invalid fe_sec_tone_mode\n");
ret = -EINVAL;
goto err;
}
utmp = tone << 7 | dev->cfg->envelope_mode << 5;
ret = m88ds3103_update_bits(dev, 0xa2, 0xe0, utmp);
if (ret)
goto err;
utmp = 1 << 2;
ret = m88ds3103_update_bits(dev, 0xa1, reg_a1_mask, utmp);
if (ret)
goto err;
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int m88ds3103_set_voltage(struct dvb_frontend *fe,
enum fe_sec_voltage fe_sec_voltage)
{
struct m88ds3103_dev *dev = fe->demodulator_priv;
struct i2c_client *client = dev->client;
int ret;
unsigned int utmp;
bool voltage_sel, voltage_dis;
dev_dbg(&client->dev, "fe_sec_voltage=%d\n", fe_sec_voltage);
if (!dev->warm) {
ret = -EAGAIN;
goto err;
}
switch (fe_sec_voltage) {
case SEC_VOLTAGE_18:
voltage_sel = true;
voltage_dis = false;
break;
case SEC_VOLTAGE_13:
voltage_sel = false;
voltage_dis = false;
break;
case SEC_VOLTAGE_OFF:
voltage_sel = false;
voltage_dis = true;
break;
default:
dev_dbg(&client->dev, "invalid fe_sec_voltage\n");
ret = -EINVAL;
goto err;
}
/* output pin polarity */
voltage_sel ^= dev->cfg->lnb_hv_pol;
voltage_dis ^= dev->cfg->lnb_en_pol;
utmp = voltage_dis << 1 | voltage_sel << 0;
ret = m88ds3103_update_bits(dev, 0xa2, 0x03, utmp);
if (ret)
goto err;
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int m88ds3103_diseqc_send_master_cmd(struct dvb_frontend *fe,
struct dvb_diseqc_master_cmd *diseqc_cmd)
{
struct m88ds3103_dev *dev = fe->demodulator_priv;
struct i2c_client *client = dev->client;
int ret;
unsigned int utmp;
unsigned long timeout;
dev_dbg(&client->dev, "msg=%*ph\n",
diseqc_cmd->msg_len, diseqc_cmd->msg);
if (!dev->warm) {
ret = -EAGAIN;
goto err;
}
if (diseqc_cmd->msg_len < 3 || diseqc_cmd->msg_len > 6) {
ret = -EINVAL;
goto err;
}
utmp = dev->cfg->envelope_mode << 5;
ret = m88ds3103_update_bits(dev, 0xa2, 0xe0, utmp);
if (ret)
goto err;
ret = regmap_bulk_write(dev->regmap, 0xa3, diseqc_cmd->msg,
diseqc_cmd->msg_len);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0xa1,
(diseqc_cmd->msg_len - 1) << 3 | 0x07);
if (ret)
goto err;
/* wait DiSEqC TX ready */
#define SEND_MASTER_CMD_TIMEOUT 120
timeout = jiffies + msecs_to_jiffies(SEND_MASTER_CMD_TIMEOUT);
/* DiSEqC message period is 13.5 ms per byte */
utmp = diseqc_cmd->msg_len * 13500;
usleep_range(utmp - 4000, utmp);
for (utmp = 1; !time_after(jiffies, timeout) && utmp;) {
ret = regmap_read(dev->regmap, 0xa1, &utmp);
if (ret)
goto err;
utmp = (utmp >> 6) & 0x1;
}
if (utmp == 0) {
dev_dbg(&client->dev, "diseqc tx took %u ms\n",
jiffies_to_msecs(jiffies) -
(jiffies_to_msecs(timeout) - SEND_MASTER_CMD_TIMEOUT));
} else {
dev_dbg(&client->dev, "diseqc tx timeout\n");
ret = m88ds3103_update_bits(dev, 0xa1, 0xc0, 0x40);
if (ret)
goto err;
}
ret = m88ds3103_update_bits(dev, 0xa2, 0xc0, 0x80);
if (ret)
goto err;
if (utmp == 1) {
ret = -ETIMEDOUT;
goto err;
}
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int m88ds3103_diseqc_send_burst(struct dvb_frontend *fe,
enum fe_sec_mini_cmd fe_sec_mini_cmd)
{
struct m88ds3103_dev *dev = fe->demodulator_priv;
struct i2c_client *client = dev->client;
int ret;
unsigned int utmp, burst;
unsigned long timeout;
dev_dbg(&client->dev, "fe_sec_mini_cmd=%d\n", fe_sec_mini_cmd);
if (!dev->warm) {
ret = -EAGAIN;
goto err;
}
utmp = dev->cfg->envelope_mode << 5;
ret = m88ds3103_update_bits(dev, 0xa2, 0xe0, utmp);
if (ret)
goto err;
switch (fe_sec_mini_cmd) {
case SEC_MINI_A:
burst = 0x02;
break;
case SEC_MINI_B:
burst = 0x01;
break;
default:
dev_dbg(&client->dev, "invalid fe_sec_mini_cmd\n");
ret = -EINVAL;
goto err;
}
ret = regmap_write(dev->regmap, 0xa1, burst);
if (ret)
goto err;
/* wait DiSEqC TX ready */
#define SEND_BURST_TIMEOUT 40
timeout = jiffies + msecs_to_jiffies(SEND_BURST_TIMEOUT);
/* DiSEqC ToneBurst period is 12.5 ms */
usleep_range(8500, 12500);
for (utmp = 1; !time_after(jiffies, timeout) && utmp;) {
ret = regmap_read(dev->regmap, 0xa1, &utmp);
if (ret)
goto err;
utmp = (utmp >> 6) & 0x1;
}
if (utmp == 0) {
dev_dbg(&client->dev, "diseqc tx took %u ms\n",
jiffies_to_msecs(jiffies) -
(jiffies_to_msecs(timeout) - SEND_BURST_TIMEOUT));
} else {
dev_dbg(&client->dev, "diseqc tx timeout\n");
ret = m88ds3103_update_bits(dev, 0xa1, 0xc0, 0x40);
if (ret)
goto err;
}
ret = m88ds3103_update_bits(dev, 0xa2, 0xc0, 0x80);
if (ret)
goto err;
if (utmp == 1) {
ret = -ETIMEDOUT;
goto err;
}
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int m88ds3103_get_tune_settings(struct dvb_frontend *fe,
struct dvb_frontend_tune_settings *s)
{
s->min_delay_ms = 3000;
return 0;
}
static void m88ds3103_release(struct dvb_frontend *fe)
{
struct m88ds3103_dev *dev = fe->demodulator_priv;
struct i2c_client *client = dev->client;
i2c_unregister_device(client);
}
static int m88ds3103_select(struct i2c_mux_core *muxc, u32 chan)
{
struct m88ds3103_dev *dev = i2c_mux_priv(muxc);
struct i2c_client *client = dev->client;
int ret;
struct i2c_msg msg = {
.addr = client->addr,
.flags = 0,
.len = 2,
.buf = "\x03\x11",
};
/* Open tuner I2C repeater for 1 xfer, closes automatically */
ret = __i2c_transfer(client->adapter, &msg, 1);
if (ret != 1) {
dev_warn(&client->dev, "i2c wr failed=%d\n", ret);
if (ret >= 0)
ret = -EREMOTEIO;
return ret;
}
return 0;
}
/*
* XXX: That is wrapper to m88ds3103_probe() via driver core in order to provide
* proper I2C client for legacy media attach binding.
* New users must use I2C client binding directly!
*/
struct dvb_frontend *m88ds3103_attach(const struct m88ds3103_config *cfg,
struct i2c_adapter *i2c,
struct i2c_adapter **tuner_i2c_adapter)
{
struct i2c_client *client;
struct i2c_board_info board_info;
struct m88ds3103_platform_data pdata = {};
pdata.clk = cfg->clock;
pdata.i2c_wr_max = cfg->i2c_wr_max;
pdata.ts_mode = cfg->ts_mode;
pdata.ts_clk = cfg->ts_clk;
pdata.ts_clk_pol = cfg->ts_clk_pol;
pdata.spec_inv = cfg->spec_inv;
pdata.agc = cfg->agc;
pdata.agc_inv = cfg->agc_inv;
pdata.clk_out = cfg->clock_out;
pdata.envelope_mode = cfg->envelope_mode;
pdata.lnb_hv_pol = cfg->lnb_hv_pol;
pdata.lnb_en_pol = cfg->lnb_en_pol;
pdata.attach_in_use = true;
memset(&board_info, 0, sizeof(board_info));
strlcpy(board_info.type, "m88ds3103", I2C_NAME_SIZE);
board_info.addr = cfg->i2c_addr;
board_info.platform_data = &pdata;
client = i2c_new_device(i2c, &board_info);
if (!client || !client->dev.driver)
return NULL;
*tuner_i2c_adapter = pdata.get_i2c_adapter(client);
return pdata.get_dvb_frontend(client);
}
EXPORT_SYMBOL(m88ds3103_attach);
static const struct dvb_frontend_ops m88ds3103_ops = {
.delsys = {SYS_DVBS, SYS_DVBS2},
.info = {
.name = "Montage Technology M88DS3103",
.frequency_min_hz = 950 * MHz,
.frequency_max_hz = 2150 * MHz,
.frequency_tolerance_hz = 5 * MHz,
.symbol_rate_min = 1000000,
.symbol_rate_max = 45000000,
.caps = FE_CAN_INVERSION_AUTO |
FE_CAN_FEC_1_2 |
FE_CAN_FEC_2_3 |
FE_CAN_FEC_3_4 |
FE_CAN_FEC_4_5 |
FE_CAN_FEC_5_6 |
FE_CAN_FEC_6_7 |
FE_CAN_FEC_7_8 |
FE_CAN_FEC_8_9 |
FE_CAN_FEC_AUTO |
FE_CAN_QPSK |
FE_CAN_RECOVER |
FE_CAN_2G_MODULATION
},
.release = m88ds3103_release,
.get_tune_settings = m88ds3103_get_tune_settings,
.init = m88ds3103_init,
.sleep = m88ds3103_sleep,
.set_frontend = m88ds3103_set_frontend,
.get_frontend = m88ds3103_get_frontend,
.read_status = m88ds3103_read_status,
.read_snr = m88ds3103_read_snr,
.read_ber = m88ds3103_read_ber,
.diseqc_send_master_cmd = m88ds3103_diseqc_send_master_cmd,
.diseqc_send_burst = m88ds3103_diseqc_send_burst,
.set_tone = m88ds3103_set_tone,
.set_voltage = m88ds3103_set_voltage,
};
static struct dvb_frontend *m88ds3103_get_dvb_frontend(struct i2c_client *client)
{
struct m88ds3103_dev *dev = i2c_get_clientdata(client);
dev_dbg(&client->dev, "\n");
return &dev->fe;
}
static struct i2c_adapter *m88ds3103_get_i2c_adapter(struct i2c_client *client)
{
struct m88ds3103_dev *dev = i2c_get_clientdata(client);
dev_dbg(&client->dev, "\n");
return dev->muxc->adapter[0];
}
static int m88ds3103_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct m88ds3103_dev *dev;
struct m88ds3103_platform_data *pdata = client->dev.platform_data;
int ret;
unsigned int utmp;
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev) {
ret = -ENOMEM;
goto err;
}
dev->client = client;
dev->config.clock = pdata->clk;
dev->config.i2c_wr_max = pdata->i2c_wr_max;
dev->config.ts_mode = pdata->ts_mode;
dev->config.ts_clk = pdata->ts_clk * 1000;
dev->config.ts_clk_pol = pdata->ts_clk_pol;
dev->config.spec_inv = pdata->spec_inv;
dev->config.agc_inv = pdata->agc_inv;
dev->config.clock_out = pdata->clk_out;
dev->config.envelope_mode = pdata->envelope_mode;
dev->config.agc = pdata->agc;
dev->config.lnb_hv_pol = pdata->lnb_hv_pol;
dev->config.lnb_en_pol = pdata->lnb_en_pol;
dev->cfg = &dev->config;
/* create regmap */
dev->regmap_config.reg_bits = 8,
dev->regmap_config.val_bits = 8,
dev->regmap_config.lock_arg = dev,
dev->regmap = devm_regmap_init_i2c(client, &dev->regmap_config);
if (IS_ERR(dev->regmap)) {
ret = PTR_ERR(dev->regmap);
goto err_kfree;
}
/* 0x00: chip id[6:0], 0x01: chip ver[7:0], 0x02: chip ver[15:8] */
ret = regmap_read(dev->regmap, 0x00, &utmp);
if (ret)
goto err_kfree;
dev->chip_id = utmp >> 1;
dev_dbg(&client->dev, "chip_id=%02x\n", dev->chip_id);
switch (dev->chip_id) {
case M88RS6000_CHIP_ID:
case M88DS3103_CHIP_ID:
break;
default:
ret = -ENODEV;
dev_err(&client->dev, "Unknown device. Chip_id=%02x\n", dev->chip_id);
goto err_kfree;
}
switch (dev->cfg->clock_out) {
case M88DS3103_CLOCK_OUT_DISABLED:
utmp = 0x80;
break;
case M88DS3103_CLOCK_OUT_ENABLED:
utmp = 0x00;
break;
case M88DS3103_CLOCK_OUT_ENABLED_DIV2:
utmp = 0x10;
break;
default:
ret = -EINVAL;
goto err_kfree;
}
if (!pdata->ts_clk) {
ret = -EINVAL;
goto err_kfree;
}
/* 0x29 register is defined differently for m88rs6000. */
/* set internal tuner address to 0x21 */
if (dev->chip_id == M88RS6000_CHIP_ID)
utmp = 0x00;
ret = regmap_write(dev->regmap, 0x29, utmp);
if (ret)
goto err_kfree;
/* sleep */
ret = m88ds3103_update_bits(dev, 0x08, 0x01, 0x00);
if (ret)
goto err_kfree;
ret = m88ds3103_update_bits(dev, 0x04, 0x01, 0x01);
if (ret)
goto err_kfree;
ret = m88ds3103_update_bits(dev, 0x23, 0x10, 0x10);
if (ret)
goto err_kfree;
/* create mux i2c adapter for tuner */
dev->muxc = i2c_mux_alloc(client->adapter, &client->dev, 1, 0, 0,
m88ds3103_select, NULL);
if (!dev->muxc) {
ret = -ENOMEM;
goto err_kfree;
}
dev->muxc->priv = dev;
ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0);
if (ret)
goto err_kfree;
/* create dvb_frontend */
memcpy(&dev->fe.ops, &m88ds3103_ops, sizeof(struct dvb_frontend_ops));
if (dev->chip_id == M88RS6000_CHIP_ID)
strncpy(dev->fe.ops.info.name, "Montage Technology M88RS6000",
sizeof(dev->fe.ops.info.name));
if (!pdata->attach_in_use)
dev->fe.ops.release = NULL;
dev->fe.demodulator_priv = dev;
i2c_set_clientdata(client, dev);
/* setup callbacks */
pdata->get_dvb_frontend = m88ds3103_get_dvb_frontend;
pdata->get_i2c_adapter = m88ds3103_get_i2c_adapter;
return 0;
err_kfree:
kfree(dev);
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int m88ds3103_remove(struct i2c_client *client)
{
struct m88ds3103_dev *dev = i2c_get_clientdata(client);
dev_dbg(&client->dev, "\n");
i2c_mux_del_adapters(dev->muxc);
kfree(dev);
return 0;
}
static const struct i2c_device_id m88ds3103_id_table[] = {
{"m88ds3103", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, m88ds3103_id_table);
static struct i2c_driver m88ds3103_driver = {
.driver = {
.name = "m88ds3103",
.suppress_bind_attrs = true,
},
.probe = m88ds3103_probe,
.remove = m88ds3103_remove,
.id_table = m88ds3103_id_table,
};
module_i2c_driver(m88ds3103_driver);
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_DESCRIPTION("Montage Technology M88DS3103 DVB-S/S2 demodulator driver");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE(M88DS3103_FIRMWARE);
MODULE_FIRMWARE(M88RS6000_FIRMWARE);
Reference in a new issue Copy permalink