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remarkable-linux/drivers/media/dvb-frontends/hd29l2.c
Mauro Carvalho Chehab 7e3e68bcfd [media] dvb_frontend: pass the props cache to get_frontend() as arg 
Instead of using the DTV properties cache directly, pass the get
frontend data as an argument. For now, everything should remain
the same, but the next patch will prevent get_frontend to
affect the global cache.

This is needed because several drivers don't care enough to only
change the properties if locked. Due to that, calling
G_PROPERTY before locking on those drivers will make them to
never lock. Ok, those drivers are crap and should never be
merged like that, but the core should not rely that the drivers
would be doing the right thing.

Reviewed-by: Michael Ira Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2016-02-04 16:27:30 -02:00

871 lines
18 KiB
C
Raw Blame History

/*
* HDIC HD29L2 DMB-TH demodulator driver
*
* Copyright (C) 2011 Metropolia University of Applied Sciences, Electria R&D
*
* Author: 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.
*
* 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 "hd29l2_priv.h"
#define HD29L2_MAX_LEN (3)
/* write multiple registers */
static int hd29l2_wr_regs(struct hd29l2_priv *priv, u8 reg, u8 *val, int len)
{
int ret;
u8 buf[2 + HD29L2_MAX_LEN];
struct i2c_msg msg[1] = {
{
.addr = priv->cfg.i2c_addr,
.flags = 0,
.len = 2 + len,
.buf = buf,
}
};
if (len > HD29L2_MAX_LEN)
return -EINVAL;
buf[0] = 0x00;
buf[1] = reg;
memcpy(&buf[2], val, len);
ret = i2c_transfer(priv->i2c, msg, 1);
if (ret == 1) {
ret = 0;
} else {
dev_warn(&priv->i2c->dev,
"%s: i2c wr failed=%d reg=%02x len=%d\n",
KBUILD_MODNAME, ret, reg, len);
ret = -EREMOTEIO;
}
return ret;
}
/* read multiple registers */
static int hd29l2_rd_regs(struct hd29l2_priv *priv, u8 reg, u8 *val, int len)
{
int ret;
u8 buf[2] = { 0x00, reg };
struct i2c_msg msg[2] = {
{
.addr = priv->cfg.i2c_addr,
.flags = 0,
.len = 2,
.buf = buf,
}, {
.addr = priv->cfg.i2c_addr,
.flags = I2C_M_RD,
.len = len,
.buf = val,
}
};
ret = i2c_transfer(priv->i2c, msg, 2);
if (ret == 2) {
ret = 0;
} else {
dev_warn(&priv->i2c->dev,
"%s: i2c rd failed=%d reg=%02x len=%d\n",
KBUILD_MODNAME, ret, reg, len);
ret = -EREMOTEIO;
}
return ret;
}
/* write single register */
static int hd29l2_wr_reg(struct hd29l2_priv *priv, u8 reg, u8 val)
{
return hd29l2_wr_regs(priv, reg, &val, 1);
}
/* read single register */
static int hd29l2_rd_reg(struct hd29l2_priv *priv, u8 reg, u8 *val)
{
return hd29l2_rd_regs(priv, reg, val, 1);
}
/* write single register with mask */
static int hd29l2_wr_reg_mask(struct hd29l2_priv *priv, u8 reg, u8 val, u8 mask)
{
int ret;
u8 tmp;
/* no need for read if whole reg is written */
if (mask != 0xff) {
ret = hd29l2_rd_regs(priv, reg, &tmp, 1);
if (ret)
return ret;
val &= mask;
tmp &= ~mask;
val |= tmp;
}
return hd29l2_wr_regs(priv, reg, &val, 1);
}
/* read single register with mask */
static int hd29l2_rd_reg_mask(struct hd29l2_priv *priv, u8 reg, u8 *val, u8 mask)
{
int ret, i;
u8 tmp;
ret = hd29l2_rd_regs(priv, reg, &tmp, 1);
if (ret)
return ret;
tmp &= mask;
/* find position of the first bit */
for (i = 0; i < 8; i++) {
if ((mask >> i) & 0x01)
break;
}
*val = tmp >> i;
return 0;
}
static int hd29l2_soft_reset(struct hd29l2_priv *priv)
{
int ret;
u8 tmp;
ret = hd29l2_rd_reg(priv, 0x26, &tmp);
if (ret)
goto err;
ret = hd29l2_wr_reg(priv, 0x26, 0x0d);
if (ret)
goto err;
usleep_range(10000, 20000);
ret = hd29l2_wr_reg(priv, 0x26, tmp);
if (ret)
goto err;
return 0;
err:
dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int hd29l2_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
{
int ret, i;
struct hd29l2_priv *priv = fe->demodulator_priv;
u8 tmp;
dev_dbg(&priv->i2c->dev, "%s: enable=%d\n", __func__, enable);
/* set tuner address for demod */
if (!priv->tuner_i2c_addr_programmed && enable) {
/* no need to set tuner address every time, once is enough */
ret = hd29l2_wr_reg(priv, 0x9d, priv->cfg.tuner_i2c_addr << 1);
if (ret)
goto err;
priv->tuner_i2c_addr_programmed = true;
}
/* open / close gate */
ret = hd29l2_wr_reg(priv, 0x9f, enable);
if (ret)
goto err;
/* wait demod ready */
for (i = 10; i; i--) {
ret = hd29l2_rd_reg(priv, 0x9e, &tmp);
if (ret)
goto err;
if (tmp == enable)
break;
usleep_range(5000, 10000);
}
dev_dbg(&priv->i2c->dev, "%s: loop=%d\n", __func__, i);
return ret;
err:
dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int hd29l2_read_status(struct dvb_frontend *fe, enum fe_status *status)
{
int ret;
struct hd29l2_priv *priv = fe->demodulator_priv;
u8 buf[2];
*status = 0;
ret = hd29l2_rd_reg(priv, 0x05, &buf[0]);
if (ret)
goto err;
if (buf[0] & 0x01) {
/* full lock */
*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
FE_HAS_SYNC | FE_HAS_LOCK;
} else {
ret = hd29l2_rd_reg(priv, 0x0d, &buf[1]);
if (ret)
goto err;
if ((buf[1] & 0xfe) == 0x78)
/* partial lock */
*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
FE_HAS_VITERBI | FE_HAS_SYNC;
}
priv->fe_status = *status;
return 0;
err:
dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int hd29l2_read_snr(struct dvb_frontend *fe, u16 *snr)
{
int ret;
struct hd29l2_priv *priv = fe->demodulator_priv;
u8 buf[2];
u16 tmp;
if (!(priv->fe_status & FE_HAS_LOCK)) {
*snr = 0;
ret = 0;
goto err;
}
ret = hd29l2_rd_regs(priv, 0x0b, buf, 2);
if (ret)
goto err;
tmp = (buf[0] << 8) | buf[1];
/* report SNR in dB * 10 */
#define LOG10_20736_24 72422627 /* log10(20736) << 24 */
if (tmp)
*snr = (LOG10_20736_24 - intlog10(tmp)) / ((1 << 24) / 100);
else
*snr = 0;
return 0;
err:
dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int hd29l2_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
{
int ret;
struct hd29l2_priv *priv = fe->demodulator_priv;
u8 buf[2];
u16 tmp;
*strength = 0;
ret = hd29l2_rd_regs(priv, 0xd5, buf, 2);
if (ret)
goto err;
tmp = buf[0] << 8 | buf[1];
tmp = ~tmp & 0x0fff;
/* scale value to 0x0000-0xffff from 0x0000-0x0fff */
*strength = tmp * 0xffff / 0x0fff;
return 0;
err:
dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int hd29l2_read_ber(struct dvb_frontend *fe, u32 *ber)
{
int ret;
struct hd29l2_priv *priv = fe->demodulator_priv;
u8 buf[2];
if (!(priv->fe_status & FE_HAS_SYNC)) {
*ber = 0;
ret = 0;
goto err;
}
ret = hd29l2_rd_regs(priv, 0xd9, buf, 2);
if (ret) {
*ber = 0;
goto err;
}
/* LDPC BER */
*ber = ((buf[0] & 0x0f) << 8) | buf[1];
return 0;
err:
dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int hd29l2_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
{
/* no way to read? */
*ucblocks = 0;
return 0;
}
static enum dvbfe_search hd29l2_search(struct dvb_frontend *fe)
{
int ret, i;
struct hd29l2_priv *priv = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
u8 tmp, buf[3];
u8 modulation, carrier, guard_interval, interleave, code_rate;
u64 num64;
u32 if_freq, if_ctl;
bool auto_mode;
dev_dbg(&priv->i2c->dev, "%s: delivery_system=%d frequency=%d " \
"bandwidth_hz=%d modulation=%d inversion=%d " \
"fec_inner=%d guard_interval=%d\n", __func__,
c->delivery_system, c->frequency, c->bandwidth_hz,
c->modulation, c->inversion, c->fec_inner,
c->guard_interval);
/* as for now we detect always params automatically */
auto_mode = true;
/* program tuner */
if (fe->ops.tuner_ops.set_params)
fe->ops.tuner_ops.set_params(fe);
/* get and program IF */
if (fe->ops.tuner_ops.get_if_frequency)
fe->ops.tuner_ops.get_if_frequency(fe, &if_freq);
else
if_freq = 0;
if (if_freq) {
/* normal IF */
/* calc IF control value */
num64 = if_freq;
num64 *= 0x800000;
num64 = div_u64(num64, HD29L2_XTAL);
num64 -= 0x800000;
if_ctl = num64;
tmp = 0xfc; /* tuner type normal */
} else {
/* zero IF */
if_ctl = 0;
tmp = 0xfe; /* tuner type Zero-IF */
}
buf[0] = ((if_ctl >> 0) & 0xff);
buf[1] = ((if_ctl >> 8) & 0xff);
buf[2] = ((if_ctl >> 16) & 0xff);
/* program IF control */
ret = hd29l2_wr_regs(priv, 0x14, buf, 3);
if (ret)
goto err;
/* program tuner type */
ret = hd29l2_wr_reg(priv, 0xab, tmp);
if (ret)
goto err;
dev_dbg(&priv->i2c->dev, "%s: if_freq=%d if_ctl=%x\n",
__func__, if_freq, if_ctl);
if (auto_mode) {
/*
* use auto mode
*/
/* disable quick mode */
ret = hd29l2_wr_reg_mask(priv, 0xac, 0 << 7, 0x80);
if (ret)
goto err;
ret = hd29l2_wr_reg_mask(priv, 0x82, 1 << 1, 0x02);
if (ret)
goto err;
/* enable auto mode */
ret = hd29l2_wr_reg_mask(priv, 0x7d, 1 << 6, 0x40);
if (ret)
goto err;
ret = hd29l2_wr_reg_mask(priv, 0x81, 1 << 3, 0x08);
if (ret)
goto err;
/* soft reset */
ret = hd29l2_soft_reset(priv);
if (ret)
goto err;
/* detect modulation */
for (i = 30; i; i--) {
msleep(100);
ret = hd29l2_rd_reg(priv, 0x0d, &tmp);
if (ret)
goto err;
if ((((tmp & 0xf0) >= 0x10) &&
((tmp & 0x0f) == 0x08)) || (tmp >= 0x2c))
break;
}
dev_dbg(&priv->i2c->dev, "%s: loop=%d\n", __func__, i);
if (i == 0)
/* detection failed */
return DVBFE_ALGO_SEARCH_FAILED;
/* read modulation */
ret = hd29l2_rd_reg_mask(priv, 0x7d, &modulation, 0x07);
if (ret)
goto err;
} else {
/*
* use manual mode
*/
modulation = HD29L2_QAM64;
carrier = HD29L2_CARRIER_MULTI;
guard_interval = HD29L2_PN945;
interleave = HD29L2_INTERLEAVER_420;
code_rate = HD29L2_CODE_RATE_08;
tmp = (code_rate << 3) | modulation;
ret = hd29l2_wr_reg_mask(priv, 0x7d, tmp, 0x5f);
if (ret)
goto err;
tmp = (carrier << 2) | guard_interval;
ret = hd29l2_wr_reg_mask(priv, 0x81, tmp, 0x0f);
if (ret)
goto err;
tmp = interleave;
ret = hd29l2_wr_reg_mask(priv, 0x82, tmp, 0x03);
if (ret)
goto err;
}
/* ensure modulation validy */
/* 0=QAM4_NR, 1=QAM4, 2=QAM16, 3=QAM32, 4=QAM64 */
if (modulation > (ARRAY_SIZE(reg_mod_vals_tab[0].val) - 1)) {
dev_dbg(&priv->i2c->dev, "%s: modulation=%d not valid\n",
__func__, modulation);
goto err;
}
/* program registers according to modulation */
for (i = 0; i < ARRAY_SIZE(reg_mod_vals_tab); i++) {
ret = hd29l2_wr_reg(priv, reg_mod_vals_tab[i].reg,
reg_mod_vals_tab[i].val[modulation]);
if (ret)
goto err;
}
/* read guard interval */
ret = hd29l2_rd_reg_mask(priv, 0x81, &guard_interval, 0x03);
if (ret)
goto err;
/* read carrier mode */
ret = hd29l2_rd_reg_mask(priv, 0x81, &carrier, 0x04);
if (ret)
goto err;
dev_dbg(&priv->i2c->dev,
"%s: modulation=%d guard_interval=%d carrier=%d\n",
__func__, modulation, guard_interval, carrier);
if ((carrier == HD29L2_CARRIER_MULTI) && (modulation == HD29L2_QAM64) &&
(guard_interval == HD29L2_PN945)) {
dev_dbg(&priv->i2c->dev, "%s: C=3780 && QAM64 && PN945\n",
__func__);
ret = hd29l2_wr_reg(priv, 0x42, 0x33);
if (ret)
goto err;
ret = hd29l2_wr_reg(priv, 0xdd, 0x01);
if (ret)
goto err;
}
usleep_range(10000, 20000);
/* soft reset */
ret = hd29l2_soft_reset(priv);
if (ret)
goto err;
/* wait demod lock */
for (i = 30; i; i--) {
msleep(100);
/* read lock bit */
ret = hd29l2_rd_reg_mask(priv, 0x05, &tmp, 0x01);
if (ret)
goto err;
if (tmp)
break;
}
dev_dbg(&priv->i2c->dev, "%s: loop=%d\n", __func__, i);
if (i == 0)
return DVBFE_ALGO_SEARCH_AGAIN;
return DVBFE_ALGO_SEARCH_SUCCESS;
err:
dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
return DVBFE_ALGO_SEARCH_ERROR;
}
static int hd29l2_get_frontend_algo(struct dvb_frontend *fe)
{
return DVBFE_ALGO_CUSTOM;
}
static int hd29l2_get_frontend(struct dvb_frontend *fe,
struct dtv_frontend_properties *c)
{
int ret;
struct hd29l2_priv *priv = fe->demodulator_priv;
u8 buf[3];
u32 if_ctl;
char *str_constellation, *str_code_rate, *str_constellation_code_rate,
*str_guard_interval, *str_carrier, *str_guard_interval_carrier,
*str_interleave, *str_interleave_;
ret = hd29l2_rd_reg(priv, 0x7d, &buf[0]);
if (ret)
goto err;
ret = hd29l2_rd_regs(priv, 0x81, &buf[1], 2);
if (ret)
goto err;
/* constellation, 0x7d[2:0] */
switch ((buf[0] >> 0) & 0x07) {
case 0: /* QAM4NR */
str_constellation = "QAM4NR";
c->modulation = QAM_AUTO; /* FIXME */
break;
case 1: /* QAM4 */
str_constellation = "QAM4";
c->modulation = QPSK; /* FIXME */
break;
case 2:
str_constellation = "QAM16";
c->modulation = QAM_16;
break;
case 3:
str_constellation = "QAM32";
c->modulation = QAM_32;
break;
case 4:
str_constellation = "QAM64";
c->modulation = QAM_64;
break;
default:
str_constellation = "?";
}
/* LDPC code rate, 0x7d[4:3] */
switch ((buf[0] >> 3) & 0x03) {
case 0: /* 0.4 */
str_code_rate = "0.4";
c->fec_inner = FEC_AUTO; /* FIXME */
break;
case 1: /* 0.6 */
str_code_rate = "0.6";
c->fec_inner = FEC_3_5;
break;
case 2: /* 0.8 */
str_code_rate = "0.8";
c->fec_inner = FEC_4_5;
break;
default:
str_code_rate = "?";
}
/* constellation & code rate set, 0x7d[6] */
switch ((buf[0] >> 6) & 0x01) {
case 0:
str_constellation_code_rate = "manual";
break;
case 1:
str_constellation_code_rate = "auto";
break;
default:
str_constellation_code_rate = "?";
}
/* frame header, 0x81[1:0] */
switch ((buf[1] >> 0) & 0x03) {
case 0: /* PN945 */
str_guard_interval = "PN945";
c->guard_interval = GUARD_INTERVAL_AUTO; /* FIXME */
break;
case 1: /* PN595 */
str_guard_interval = "PN595";
c->guard_interval = GUARD_INTERVAL_AUTO; /* FIXME */
break;
case 2: /* PN420 */
str_guard_interval = "PN420";
c->guard_interval = GUARD_INTERVAL_AUTO; /* FIXME */
break;
default:
str_guard_interval = "?";
}
/* carrier, 0x81[2] */
switch ((buf[1] >> 2) & 0x01) {
case 0:
str_carrier = "C=1";
break;
case 1:
str_carrier = "C=3780";
break;
default:
str_carrier = "?";
}
/* frame header & carrier set, 0x81[3] */
switch ((buf[1] >> 3) & 0x01) {
case 0:
str_guard_interval_carrier = "manual";
break;
case 1:
str_guard_interval_carrier = "auto";
break;
default:
str_guard_interval_carrier = "?";
}
/* interleave, 0x82[0] */
switch ((buf[2] >> 0) & 0x01) {
case 0:
str_interleave = "M=720";
break;
case 1:
str_interleave = "M=240";
break;
default:
str_interleave = "?";
}
/* interleave set, 0x82[1] */
switch ((buf[2] >> 1) & 0x01) {
case 0:
str_interleave_ = "manual";
break;
case 1:
str_interleave_ = "auto";
break;
default:
str_interleave_ = "?";
}
/*
* We can read out current detected NCO and use that value next
* time instead of calculating new value from targed IF.
* I think it will not effect receiver sensitivity but gaining lock
* after tune could be easier...
*/
ret = hd29l2_rd_regs(priv, 0xb1, &buf[0], 3);
if (ret)
goto err;
if_ctl = (buf[0] << 16) | ((buf[1] - 7) << 8) | buf[2];
dev_dbg(&priv->i2c->dev, "%s: %s %s %s | %s %s %s | %s %s | NCO=%06x\n",
__func__, str_constellation, str_code_rate,
str_constellation_code_rate, str_guard_interval,
str_carrier, str_guard_interval_carrier, str_interleave,
str_interleave_, if_ctl);
return 0;
err:
dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int hd29l2_init(struct dvb_frontend *fe)
{
int ret, i;
struct hd29l2_priv *priv = fe->demodulator_priv;
u8 tmp;
static const struct reg_val tab[] = {
{ 0x3a, 0x06 },
{ 0x3b, 0x03 },
{ 0x3c, 0x04 },
{ 0xaf, 0x06 },
{ 0xb0, 0x1b },
{ 0x80, 0x64 },
{ 0x10, 0x38 },
};
dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
/* reset demod */
/* it is recommended to HW reset chip using RST_N pin */
if (fe->callback) {
ret = fe->callback(fe, DVB_FRONTEND_COMPONENT_DEMOD, 0, 0);
if (ret)
goto err;
/* reprogramming needed because HW reset clears registers */
priv->tuner_i2c_addr_programmed = false;
}
/* init */
for (i = 0; i < ARRAY_SIZE(tab); i++) {
ret = hd29l2_wr_reg(priv, tab[i].reg, tab[i].val);
if (ret)
goto err;
}
/* TS params */
ret = hd29l2_rd_reg(priv, 0x36, &tmp);
if (ret)
goto err;
tmp &= 0x1b;
tmp |= priv->cfg.ts_mode;
ret = hd29l2_wr_reg(priv, 0x36, tmp);
if (ret)
goto err;
ret = hd29l2_rd_reg(priv, 0x31, &tmp);
tmp &= 0xef;
if (!(priv->cfg.ts_mode >> 7))
/* set b4 for serial TS */
tmp |= 0x10;
ret = hd29l2_wr_reg(priv, 0x31, tmp);
if (ret)
goto err;
return ret;
err:
dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static void hd29l2_release(struct dvb_frontend *fe)
{
struct hd29l2_priv *priv = fe->demodulator_priv;
kfree(priv);
}
static struct dvb_frontend_ops hd29l2_ops;
struct dvb_frontend *hd29l2_attach(const struct hd29l2_config *config,
struct i2c_adapter *i2c)
{
int ret;
struct hd29l2_priv *priv = NULL;
u8 tmp;
/* allocate memory for the internal state */
priv = kzalloc(sizeof(struct hd29l2_priv), GFP_KERNEL);
if (priv == NULL)
goto err;
/* setup the state */
priv->i2c = i2c;
memcpy(&priv->cfg, config, sizeof(struct hd29l2_config));
/* check if the demod is there */
ret = hd29l2_rd_reg(priv, 0x00, &tmp);
if (ret)
goto err;
/* create dvb_frontend */
memcpy(&priv->fe.ops, &hd29l2_ops, sizeof(struct dvb_frontend_ops));
priv->fe.demodulator_priv = priv;
return &priv->fe;
err:
kfree(priv);
return NULL;
}
EXPORT_SYMBOL(hd29l2_attach);
static struct dvb_frontend_ops hd29l2_ops = {
.delsys = { SYS_DVBT },
.info = {
.name = "HDIC HD29L2 DMB-TH",
.frequency_min = 474000000,
.frequency_max = 858000000,
.frequency_stepsize = 10000,
.caps = FE_CAN_FEC_AUTO |
FE_CAN_QPSK |
FE_CAN_QAM_16 |
FE_CAN_QAM_32 |
FE_CAN_QAM_64 |
FE_CAN_QAM_AUTO |
FE_CAN_TRANSMISSION_MODE_AUTO |
FE_CAN_BANDWIDTH_AUTO |
FE_CAN_GUARD_INTERVAL_AUTO |
FE_CAN_HIERARCHY_AUTO |
FE_CAN_RECOVER
},
.release = hd29l2_release,
.init = hd29l2_init,
.get_frontend_algo = hd29l2_get_frontend_algo,
.search = hd29l2_search,
.get_frontend = hd29l2_get_frontend,
.read_status = hd29l2_read_status,
.read_snr = hd29l2_read_snr,
.read_signal_strength = hd29l2_read_signal_strength,
.read_ber = hd29l2_read_ber,
.read_ucblocks = hd29l2_read_ucblocks,
.i2c_gate_ctrl = hd29l2_i2c_gate_ctrl,
};
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_DESCRIPTION("HDIC HD29L2 DMB-TH demodulator driver");
MODULE_LICENSE("GPL");
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