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linux/drivers/media/dvb/frontends/lgdt330x.c
Mac Michaels 87057d29f8 V4L/DVB (4122): Lgdt330x: fix missing line in VSB snr decoding logic 
- fix missing line in VSB snr decoding logic for lgdt3303

Signed-off-by: Mac Michaels <wmichaels@earthlink.net>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-06-25 02:05:11 -03:00

813 lines
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/*
* Support for LGDT3302 and LGDT3303 - VSB/QAM
*
* Copyright (C) 2005 Wilson Michaels <wilsonmichaels@earthlink.net>
*
* 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.
*
*/
/*
* NOTES ABOUT THIS DRIVER
*
* This Linux driver supports:
* DViCO FusionHDTV 3 Gold-Q
* DViCO FusionHDTV 3 Gold-T
* DViCO FusionHDTV 5 Gold
* DViCO FusionHDTV 5 Lite
* DViCO FusionHDTV 5 USB Gold
* Air2PC/AirStar 2 ATSC 3rd generation (HD5000)
* pcHDTV HD5500
*
* TODO:
* signal strength always returns 0.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <asm/byteorder.h>
#include "dvb_frontend.h"
#include "lgdt330x_priv.h"
#include "lgdt330x.h"
static int debug = 0;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug,"Turn on/off lgdt330x frontend debugging (default:off).");
#define dprintk(args...) \
do { \
if (debug) printk(KERN_DEBUG "lgdt330x: " args); \
} while (0)
struct lgdt330x_state
{
struct i2c_adapter* i2c;
/* Configuration settings */
const struct lgdt330x_config* config;
struct dvb_frontend frontend;
/* Demodulator private data */
fe_modulation_t current_modulation;
/* Tuner private data */
u32 current_frequency;
};
static int i2c_write_demod_bytes (struct lgdt330x_state* state,
u8 *buf, /* data bytes to send */
int len /* number of bytes to send */ )
{
struct i2c_msg msg =
{ .addr = state->config->demod_address,
.flags = 0,
.buf = buf,
.len = 2 };
int i;
int err;
for (i=0; i<len-1; i+=2){
if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) {
printk(KERN_WARNING "lgdt330x: %s error (addr %02x <- %02x, err = %i)\n", __FUNCTION__, msg.buf[0], msg.buf[1], err);
if (err < 0)
return err;
else
return -EREMOTEIO;
}
msg.buf += 2;
}
return 0;
}
/*
* This routine writes the register (reg) to the demod bus
* then reads the data returned for (len) bytes.
*/
static u8 i2c_read_demod_bytes (struct lgdt330x_state* state,
enum I2C_REG reg, u8* buf, int len)
{
u8 wr [] = { reg };
struct i2c_msg msg [] = {
{ .addr = state->config->demod_address,
.flags = 0, .buf = wr, .len = 1 },
{ .addr = state->config->demod_address,
.flags = I2C_M_RD, .buf = buf, .len = len },
};
int ret;
ret = i2c_transfer(state->i2c, msg, 2);
if (ret != 2) {
printk(KERN_WARNING "lgdt330x: %s: addr 0x%02x select 0x%02x error (ret == %i)\n", __FUNCTION__, state->config->demod_address, reg, ret);
} else {
ret = 0;
}
return ret;
}
/* Software reset */
static int lgdt3302_SwReset(struct lgdt330x_state* state)
{
u8 ret;
u8 reset[] = {
IRQ_MASK,
0x00 /* bit 6 is active low software reset
* bits 5-0 are 1 to mask interrupts */
};
ret = i2c_write_demod_bytes(state,
reset, sizeof(reset));
if (ret == 0) {
/* force reset high (inactive) and unmask interrupts */
reset[1] = 0x7f;
ret = i2c_write_demod_bytes(state,
reset, sizeof(reset));
}
return ret;
}
static int lgdt3303_SwReset(struct lgdt330x_state* state)
{
u8 ret;
u8 reset[] = {
0x02,
0x00 /* bit 0 is active low software reset */
};
ret = i2c_write_demod_bytes(state,
reset, sizeof(reset));
if (ret == 0) {
/* force reset high (inactive) */
reset[1] = 0x01;
ret = i2c_write_demod_bytes(state,
reset, sizeof(reset));
}
return ret;
}
static int lgdt330x_SwReset(struct lgdt330x_state* state)
{
switch (state->config->demod_chip) {
case LGDT3302:
return lgdt3302_SwReset(state);
case LGDT3303:
return lgdt3303_SwReset(state);
default:
return -ENODEV;
}
}
static int lgdt330x_init(struct dvb_frontend* fe)
{
/* Hardware reset is done using gpio[0] of cx23880x chip.
* I'd like to do it here, but don't know how to find chip address.
* cx88-cards.c arranges for the reset bit to be inactive (high).
* Maybe there needs to be a callable function in cx88-core or
* the caller of this function needs to do it. */
/*
* Array of byte pairs <address, value>
* to initialize each different chip
*/
static u8 lgdt3302_init_data[] = {
/* Use 50MHz parameter values from spec sheet since xtal is 50 */
/* Change the value of NCOCTFV[25:0] of carrier
recovery center frequency register */
VSB_CARRIER_FREQ0, 0x00,
VSB_CARRIER_FREQ1, 0x87,
VSB_CARRIER_FREQ2, 0x8e,
VSB_CARRIER_FREQ3, 0x01,
/* Change the TPCLK pin polarity
data is valid on falling clock */
DEMUX_CONTROL, 0xfb,
/* Change the value of IFBW[11:0] of
AGC IF/RF loop filter bandwidth register */
AGC_RF_BANDWIDTH0, 0x40,
AGC_RF_BANDWIDTH1, 0x93,
AGC_RF_BANDWIDTH2, 0x00,
/* Change the value of bit 6, 'nINAGCBY' and
'NSSEL[1:0] of ACG function control register 2 */
AGC_FUNC_CTRL2, 0xc6,
/* Change the value of bit 6 'RFFIX'
of AGC function control register 3 */
AGC_FUNC_CTRL3, 0x40,
/* Set the value of 'INLVTHD' register 0x2a/0x2c
to 0x7fe */
AGC_DELAY0, 0x07,
AGC_DELAY2, 0xfe,
/* Change the value of IAGCBW[15:8]
of inner AGC loop filter bandwith */
AGC_LOOP_BANDWIDTH0, 0x08,
AGC_LOOP_BANDWIDTH1, 0x9a
};
static u8 lgdt3303_init_data[] = {
0x4c, 0x14
};
static u8 flip_lgdt3303_init_data[] = {
0x4c, 0x14,
0x87, 0xf3
};
struct lgdt330x_state* state = fe->demodulator_priv;
char *chip_name;
int err;
switch (state->config->demod_chip) {
case LGDT3302:
chip_name = "LGDT3302";
err = i2c_write_demod_bytes(state, lgdt3302_init_data,
sizeof(lgdt3302_init_data));
break;
case LGDT3303:
chip_name = "LGDT3303";
if (state->config->clock_polarity_flip) {
err = i2c_write_demod_bytes(state, flip_lgdt3303_init_data,
sizeof(flip_lgdt3303_init_data));
} else {
err = i2c_write_demod_bytes(state, lgdt3303_init_data,
sizeof(lgdt3303_init_data));
}
break;
default:
chip_name = "undefined";
printk (KERN_WARNING "Only LGDT3302 and LGDT3303 are supported chips.\n");
err = -ENODEV;
}
dprintk("%s entered as %s\n", __FUNCTION__, chip_name);
if (err < 0)
return err;
return lgdt330x_SwReset(state);
}
static int lgdt330x_read_ber(struct dvb_frontend* fe, u32* ber)
{
*ber = 0; /* Not supplied by the demod chips */
return 0;
}
static int lgdt330x_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
{
struct lgdt330x_state* state = fe->demodulator_priv;
int err;
u8 buf[2];
switch (state->config->demod_chip) {
case LGDT3302:
err = i2c_read_demod_bytes(state, LGDT3302_PACKET_ERR_COUNTER1,
buf, sizeof(buf));
break;
case LGDT3303:
err = i2c_read_demod_bytes(state, LGDT3303_PACKET_ERR_COUNTER1,
buf, sizeof(buf));
break;
default:
printk(KERN_WARNING
"Only LGDT3302 and LGDT3303 are supported chips.\n");
err = -ENODEV;
}
*ucblocks = (buf[0] << 8) | buf[1];
return 0;
}
static int lgdt330x_set_parameters(struct dvb_frontend* fe,
struct dvb_frontend_parameters *param)
{
/*
* Array of byte pairs <address, value>
* to initialize 8VSB for lgdt3303 chip 50 MHz IF
*/
static u8 lgdt3303_8vsb_44_data[] = {
0x04, 0x00,
0x0d, 0x40,
0x0e, 0x87,
0x0f, 0x8e,
0x10, 0x01,
0x47, 0x8b };
/*
* Array of byte pairs <address, value>
* to initialize QAM for lgdt3303 chip
*/
static u8 lgdt3303_qam_data[] = {
0x04, 0x00,
0x0d, 0x00,
0x0e, 0x00,
0x0f, 0x00,
0x10, 0x00,
0x51, 0x63,
0x47, 0x66,
0x48, 0x66,
0x4d, 0x1a,
0x49, 0x08,
0x4a, 0x9b };
struct lgdt330x_state* state = fe->demodulator_priv;
static u8 top_ctrl_cfg[] = { TOP_CONTROL, 0x03 };
int err;
/* Change only if we are actually changing the modulation */
if (state->current_modulation != param->u.vsb.modulation) {
switch(param->u.vsb.modulation) {
case VSB_8:
dprintk("%s: VSB_8 MODE\n", __FUNCTION__);
/* Select VSB mode */
top_ctrl_cfg[1] = 0x03;
/* Select ANT connector if supported by card */
if (state->config->pll_rf_set)
state->config->pll_rf_set(fe, 1);
if (state->config->demod_chip == LGDT3303) {
err = i2c_write_demod_bytes(state, lgdt3303_8vsb_44_data,
sizeof(lgdt3303_8vsb_44_data));
}
break;
case QAM_64:
dprintk("%s: QAM_64 MODE\n", __FUNCTION__);
/* Select QAM_64 mode */
top_ctrl_cfg[1] = 0x00;
/* Select CABLE connector if supported by card */
if (state->config->pll_rf_set)
state->config->pll_rf_set(fe, 0);
if (state->config->demod_chip == LGDT3303) {
err = i2c_write_demod_bytes(state, lgdt3303_qam_data,
sizeof(lgdt3303_qam_data));
}
break;
case QAM_256:
dprintk("%s: QAM_256 MODE\n", __FUNCTION__);
/* Select QAM_256 mode */
top_ctrl_cfg[1] = 0x01;
/* Select CABLE connector if supported by card */
if (state->config->pll_rf_set)
state->config->pll_rf_set(fe, 0);
if (state->config->demod_chip == LGDT3303) {
err = i2c_write_demod_bytes(state, lgdt3303_qam_data,
sizeof(lgdt3303_qam_data));
}
break;
default:
printk(KERN_WARNING "lgdt330x: %s: Modulation type(%d) UNSUPPORTED\n", __FUNCTION__, param->u.vsb.modulation);
return -1;
}
/*
* select serial or parallel MPEG harware interface
* Serial: 0x04 for LGDT3302 or 0x40 for LGDT3303
* Parallel: 0x00
*/
top_ctrl_cfg[1] |= state->config->serial_mpeg;
/* Select the requested mode */
i2c_write_demod_bytes(state, top_ctrl_cfg,
sizeof(top_ctrl_cfg));
if (state->config->set_ts_params)
state->config->set_ts_params(fe, 0);
state->current_modulation = param->u.vsb.modulation;
}
/* Tune to the specified frequency */
if (fe->ops.tuner_ops.set_params) {
fe->ops.tuner_ops.set_params(fe, param);
if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
}
/* Keep track of the new frequency */
/* FIXME this is the wrong way to do this... */
/* The tuner is shared with the video4linux analog API */
state->current_frequency = param->frequency;
lgdt330x_SwReset(state);
return 0;
}
static int lgdt330x_get_frontend(struct dvb_frontend* fe,
struct dvb_frontend_parameters* param)
{
struct lgdt330x_state *state = fe->demodulator_priv;
param->frequency = state->current_frequency;
return 0;
}
static int lgdt3302_read_status(struct dvb_frontend* fe, fe_status_t* status)
{
struct lgdt330x_state* state = fe->demodulator_priv;
u8 buf[3];
*status = 0; /* Reset status result */
/* AGC status register */
i2c_read_demod_bytes(state, AGC_STATUS, buf, 1);
dprintk("%s: AGC_STATUS = 0x%02x\n", __FUNCTION__, buf[0]);
if ((buf[0] & 0x0c) == 0x8){
/* Test signal does not exist flag */
/* as well as the AGC lock flag. */
*status |= FE_HAS_SIGNAL;
} else {
/* Without a signal all other status bits are meaningless */
return 0;
}
/*
* You must set the Mask bits to 1 in the IRQ_MASK in order
* to see that status bit in the IRQ_STATUS register.
* This is done in SwReset();
*/
/* signal status */
i2c_read_demod_bytes(state, TOP_CONTROL, buf, sizeof(buf));
dprintk("%s: TOP_CONTROL = 0x%02x, IRO_MASK = 0x%02x, IRQ_STATUS = 0x%02x\n", __FUNCTION__, buf[0], buf[1], buf[2]);
/* sync status */
if ((buf[2] & 0x03) == 0x01) {
*status |= FE_HAS_SYNC;
}
/* FEC error status */
if ((buf[2] & 0x0c) == 0x08) {
*status |= FE_HAS_LOCK;
*status |= FE_HAS_VITERBI;
}
/* Carrier Recovery Lock Status Register */
i2c_read_demod_bytes(state, CARRIER_LOCK, buf, 1);
dprintk("%s: CARRIER_LOCK = 0x%02x\n", __FUNCTION__, buf[0]);
switch (state->current_modulation) {
case QAM_256:
case QAM_64:
/* Need to undestand why there are 3 lock levels here */
if ((buf[0] & 0x07) == 0x07)
*status |= FE_HAS_CARRIER;
break;
case VSB_8:
if ((buf[0] & 0x80) == 0x80)
*status |= FE_HAS_CARRIER;
break;
default:
printk("KERN_WARNING lgdt330x: %s: Modulation set to unsupported value\n", __FUNCTION__);
}
return 0;
}
static int lgdt3303_read_status(struct dvb_frontend* fe, fe_status_t* status)
{
struct lgdt330x_state* state = fe->demodulator_priv;
int err;
u8 buf[3];
*status = 0; /* Reset status result */
/* lgdt3303 AGC status register */
err = i2c_read_demod_bytes(state, 0x58, buf, 1);
if (err < 0)
return err;
dprintk("%s: AGC_STATUS = 0x%02x\n", __FUNCTION__, buf[0]);
if ((buf[0] & 0x21) == 0x01){
/* Test input signal does not exist flag */
/* as well as the AGC lock flag. */
*status |= FE_HAS_SIGNAL;
} else {
/* Without a signal all other status bits are meaningless */
return 0;
}
/* Carrier Recovery Lock Status Register */
i2c_read_demod_bytes(state, CARRIER_LOCK, buf, 1);
dprintk("%s: CARRIER_LOCK = 0x%02x\n", __FUNCTION__, buf[0]);
switch (state->current_modulation) {
case QAM_256:
case QAM_64:
/* Need to undestand why there are 3 lock levels here */
if ((buf[0] & 0x07) == 0x07)
*status |= FE_HAS_CARRIER;
else
break;
i2c_read_demod_bytes(state, 0x8a, buf, 1);
if ((buf[0] & 0x04) == 0x04)
*status |= FE_HAS_SYNC;
if ((buf[0] & 0x01) == 0x01)
*status |= FE_HAS_LOCK;
if ((buf[0] & 0x08) == 0x08)
*status |= FE_HAS_VITERBI;
break;
case VSB_8:
if ((buf[0] & 0x80) == 0x80)
*status |= FE_HAS_CARRIER;
else
break;
i2c_read_demod_bytes(state, 0x38, buf, 1);
if ((buf[0] & 0x02) == 0x00)
*status |= FE_HAS_SYNC;
if ((buf[0] & 0x01) == 0x01) {
*status |= FE_HAS_LOCK;
*status |= FE_HAS_VITERBI;
}
break;
default:
printk("KERN_WARNING lgdt330x: %s: Modulation set to unsupported value\n", __FUNCTION__);
}
return 0;
}
static int lgdt330x_read_signal_strength(struct dvb_frontend* fe, u16* strength)
{
/* not directly available. */
*strength = 0;
return 0;
}
static int lgdt3302_read_snr(struct dvb_frontend* fe, u16* snr)
{
#ifdef SNR_IN_DB
/*
* Spec sheet shows formula for SNR_EQ = 10 log10(25 * 24**2 / noise)
* and SNR_PH = 10 log10(25 * 32**2 / noise) for equalizer and phase tracker
* respectively. The following tables are built on these formulas.
* The usual definition is SNR = 20 log10(signal/noise)
* If the specification is wrong the value retuned is 1/2 the actual SNR in db.
*
* This table is a an ordered list of noise values computed by the
* formula from the spec sheet such that the index into the table
* starting at 43 or 45 is the SNR value in db. There are duplicate noise
* value entries at the beginning because the SNR varies more than
* 1 db for a change of 1 digit in noise at very small values of noise.
*
* Examples from SNR_EQ table:
* noise SNR
* 0 43
* 1 42
* 2 39
* 3 37
* 4 36
* 5 35
* 6 34
* 7 33
* 8 33
* 9 32
* 10 32
* 11 31
* 12 31
* 13 30
*/
static const u32 SNR_EQ[] =
{ 1, 2, 2, 2, 3, 3, 4, 4, 5, 7,
9, 11, 13, 17, 21, 26, 33, 41, 52, 65,
81, 102, 129, 162, 204, 257, 323, 406, 511, 644,
810, 1020, 1284, 1616, 2035, 2561, 3224, 4059, 5110, 6433,
8098, 10195, 12835, 16158, 20341, 25608, 32238, 40585, 51094, 64323,
80978, 101945, 128341, 161571, 203406, 256073, 0x40000
};
static const u32 SNR_PH[] =
{ 1, 2, 2, 2, 3, 3, 4, 5, 6, 8,
10, 12, 15, 19, 23, 29, 37, 46, 58, 73,
91, 115, 144, 182, 229, 288, 362, 456, 574, 722,
909, 1144, 1440, 1813, 2282, 2873, 3617, 4553, 5732, 7216,
9084, 11436, 14396, 18124, 22817, 28724, 36161, 45524, 57312, 72151,
90833, 114351, 143960, 181235, 228161, 0x080000
};
static u8 buf[5];/* read data buffer */
static u32 noise; /* noise value */
static u32 snr_db; /* index into SNR_EQ[] */
struct lgdt330x_state* state = (struct lgdt330x_state*) fe->demodulator_priv;
/* read both equalizer and phase tracker noise data */
i2c_read_demod_bytes(state, EQPH_ERR0, buf, sizeof(buf));
if (state->current_modulation == VSB_8) {
/* Equalizer Mean-Square Error Register for VSB */
noise = ((buf[0] & 7) << 16) | (buf[1] << 8) | buf[2];
/*
* Look up noise value in table.
* A better search algorithm could be used...
* watch out there are duplicate entries.
*/
for (snr_db = 0; snr_db < sizeof(SNR_EQ); snr_db++) {
if (noise < SNR_EQ[snr_db]) {
*snr = 43 - snr_db;
break;
}
}
} else {
/* Phase Tracker Mean-Square Error Register for QAM */
noise = ((buf[0] & 7<<3) << 13) | (buf[3] << 8) | buf[4];
/* Look up noise value in table. */
for (snr_db = 0; snr_db < sizeof(SNR_PH); snr_db++) {
if (noise < SNR_PH[snr_db]) {
*snr = 45 - snr_db;
break;
}
}
}
#else
/* Return the raw noise value */
static u8 buf[5];/* read data buffer */
static u32 noise; /* noise value */
struct lgdt330x_state* state = (struct lgdt330x_state*) fe->demodulator_priv;
/* read both equalizer and pase tracker noise data */
i2c_read_demod_bytes(state, EQPH_ERR0, buf, sizeof(buf));
if (state->current_modulation == VSB_8) {
/* Phase Tracker Mean-Square Error Register for VSB */
noise = ((buf[0] & 7<<3) << 13) | (buf[3] << 8) | buf[4];
} else {
/* Carrier Recovery Mean-Square Error for QAM */
i2c_read_demod_bytes(state, 0x1a, buf, 2);
noise = ((buf[0] & 3) << 8) | buf[1];
}
/* Small values for noise mean signal is better so invert noise */
*snr = ~noise;
#endif
dprintk("%s: noise = 0x%05x, snr = %idb\n",__FUNCTION__, noise, *snr);
return 0;
}
static int lgdt3303_read_snr(struct dvb_frontend* fe, u16* snr)
{
/* Return the raw noise value */
static u8 buf[5];/* read data buffer */
static u32 noise; /* noise value */
struct lgdt330x_state* state = (struct lgdt330x_state*) fe->demodulator_priv;
if (state->current_modulation == VSB_8) {
i2c_read_demod_bytes(state, 0x6e, buf, 5);
/* Phase Tracker Mean-Square Error Register for VSB */
noise = ((buf[0] & 7) << 16) | (buf[3] << 8) | buf[4];
} else {
/* Carrier Recovery Mean-Square Error for QAM */
i2c_read_demod_bytes(state, 0x1a, buf, 2);
noise = (buf[0] << 8) | buf[1];
}
/* Small values for noise mean signal is better so invert noise */
*snr = ~noise;
dprintk("%s: noise = 0x%05x, snr = %idb\n",__FUNCTION__, noise, *snr);
return 0;
}
static int lgdt330x_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fe_tune_settings)
{
/* I have no idea about this - it may not be needed */
fe_tune_settings->min_delay_ms = 500;
fe_tune_settings->step_size = 0;
fe_tune_settings->max_drift = 0;
return 0;
}
static void lgdt330x_release(struct dvb_frontend* fe)
{
struct lgdt330x_state* state = (struct lgdt330x_state*) fe->demodulator_priv;
kfree(state);
}
static struct dvb_frontend_ops lgdt3302_ops;
static struct dvb_frontend_ops lgdt3303_ops;
struct dvb_frontend* lgdt330x_attach(const struct lgdt330x_config* config,
struct i2c_adapter* i2c)
{
struct lgdt330x_state* state = NULL;
u8 buf[1];
/* Allocate memory for the internal state */
state = kzalloc(sizeof(struct lgdt330x_state), GFP_KERNEL);
if (state == NULL)
goto error;
/* Setup the state */
state->config = config;
state->i2c = i2c;
/* Create dvb_frontend */
switch (config->demod_chip) {
case LGDT3302:
memcpy(&state->frontend.ops, &lgdt3302_ops, sizeof(struct dvb_frontend_ops));
break;
case LGDT3303:
memcpy(&state->frontend.ops, &lgdt3303_ops, sizeof(struct dvb_frontend_ops));
break;
default:
goto error;
}
state->frontend.demodulator_priv = state;
/* Verify communication with demod chip */
if (i2c_read_demod_bytes(state, 2, buf, 1))
goto error;
state->current_frequency = -1;
state->current_modulation = -1;
return &state->frontend;
error:
kfree(state);
dprintk("%s: ERROR\n",__FUNCTION__);
return NULL;
}
static struct dvb_frontend_ops lgdt3302_ops = {
.info = {
.name= "LG Electronics LGDT3302 VSB/QAM Frontend",
.type = FE_ATSC,
.frequency_min= 54000000,
.frequency_max= 858000000,
.frequency_stepsize= 62500,
.symbol_rate_min = 5056941, /* QAM 64 */
.symbol_rate_max = 10762000, /* VSB 8 */
.caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB
},
.init = lgdt330x_init,
.set_frontend = lgdt330x_set_parameters,
.get_frontend = lgdt330x_get_frontend,
.get_tune_settings = lgdt330x_get_tune_settings,
.read_status = lgdt3302_read_status,
.read_ber = lgdt330x_read_ber,
.read_signal_strength = lgdt330x_read_signal_strength,
.read_snr = lgdt3302_read_snr,
.read_ucblocks = lgdt330x_read_ucblocks,
.release = lgdt330x_release,
};
static struct dvb_frontend_ops lgdt3303_ops = {
.info = {
.name= "LG Electronics LGDT3303 VSB/QAM Frontend",
.type = FE_ATSC,
.frequency_min= 54000000,
.frequency_max= 858000000,
.frequency_stepsize= 62500,
.symbol_rate_min = 5056941, /* QAM 64 */
.symbol_rate_max = 10762000, /* VSB 8 */
.caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB
},
.init = lgdt330x_init,
.set_frontend = lgdt330x_set_parameters,
.get_frontend = lgdt330x_get_frontend,
.get_tune_settings = lgdt330x_get_tune_settings,
.read_status = lgdt3303_read_status,
.read_ber = lgdt330x_read_ber,
.read_signal_strength = lgdt330x_read_signal_strength,
.read_snr = lgdt3303_read_snr,
.read_ucblocks = lgdt330x_read_ucblocks,
.release = lgdt330x_release,
};
MODULE_DESCRIPTION("LGDT330X (ATSC 8VSB & ITU-T J.83 AnnexB 64/256 QAM) Demodulator Driver");
MODULE_AUTHOR("Wilson Michaels");
MODULE_LICENSE("GPL");
EXPORT_SYMBOL(lgdt330x_attach);
/*
* Local variables:
* c-basic-offset: 8
* End:
*/
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