// SPDX-License-Identifier: GPL-2.0-or-later
/*
NXP TDA10048HN DVB OFDM demodulator driver
Copyright (C) 2009 Steven Toth <stoth@kernellabs.com>
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/math64.h>
#include <asm /div64.h>
#include <media/dvb_frontend.h>
#include <linux/int_log.h>
#include "tda10048.h"
#define TDA10048_DEFAULT_FIRMWARE "dvb-fe-tda10048-1.0.fw"
#define TDA10048_DEFAULT_FIRMWARE_SIZE 24878
/* Register name definitions */
#define TDA10048_IDENTITY 0 x00
#define TDA10048_VERSION 0 x01
#define TDA10048_DSP_CODE_CPT 0 x0C
#define TDA10048_DSP_CODE_IN 0 x0E
#define TDA10048_IN_CONF1 0 x10
#define TDA10048_IN_CONF2 0 x11
#define TDA10048_IN_CONF3 0 x12
#define TDA10048_OUT_CONF1 0 x14
#define TDA10048_OUT_CONF2 0 x15
#define TDA10048_OUT_CONF3 0 x16
#define TDA10048_AUTO 0 x18
#define TDA10048_SYNC_STATUS 0 x1A
#define TDA10048_CONF_C4_1 0 x1E
#define TDA10048_CONF_C4_2 0 x1F
#define TDA10048_CODE_IN_RAM 0 x20
#define TDA10048_CHANNEL_INFO1_R 0 x22
#define TDA10048_CHANNEL_INFO2_R 0 x23
#define TDA10048_CHANNEL_INFO1 0 x24
#define TDA10048_CHANNEL_INFO2 0 x25
#define TDA10048_TIME_ERROR_R 0 x26
#define TDA10048_TIME_ERROR 0 x27
#define TDA10048_FREQ_ERROR_LSB_R 0 x28
#define TDA10048_FREQ_ERROR_MSB_R 0 x29
#define TDA10048_FREQ_ERROR_LSB 0 x2A
#define TDA10048_FREQ_ERROR_MSB 0 x2B
#define TDA10048_IT_SEL 0 x30
#define TDA10048_IT_STAT 0 x32
#define TDA10048_DSP_AD_LSB 0 x3C
#define TDA10048_DSP_AD_MSB 0 x3D
#define TDA10048_DSP_REG_LSB 0 x3E
#define TDA10048_DSP_REG_MSB 0 x3F
#define TDA10048_CONF_TRISTATE1 0 x44
#define TDA10048_CONF_TRISTATE2 0 x45
#define TDA10048_CONF_POLARITY 0 x46
#define TDA10048_GPIO_SP_DS0 0 x48
#define TDA10048_GPIO_SP_DS1 0 x49
#define TDA10048_GPIO_SP_DS2 0 x4A
#define TDA10048_GPIO_SP_DS3 0 x4B
#define TDA10048_GPIO_OUT_SEL 0 x4C
#define TDA10048_GPIO_SELECT 0 x4D
#define TDA10048_IC_MODE 0 x4E
#define TDA10048_CONF_XO 0 x50
#define TDA10048_CONF_PLL1 0 x51
#define TDA10048_CONF_PLL2 0 x52
#define TDA10048_CONF_PLL3 0 x53
#define TDA10048_CONF_ADC 0 x54
#define TDA10048_CONF_ADC_2 0 x55
#define TDA10048_CONF_C1_1 0 x60
#define TDA10048_CONF_C1_3 0 x62
#define TDA10048_AGC_CONF 0 x70
#define TDA10048_AGC_THRESHOLD_LSB 0 x72
#define TDA10048_AGC_THRESHOLD_MSB 0 x73
#define TDA10048_AGC_RENORM 0 x74
#define TDA10048_AGC_GAINS 0 x76
#define TDA10048_AGC_TUN_MIN 0 x78
#define TDA10048_AGC_TUN_MAX 0 x79
#define TDA10048_AGC_IF_MIN 0 x7A
#define TDA10048_AGC_IF_MAX 0 x7B
#define TDA10048_AGC_TUN_LEVEL 0 x7E
#define TDA10048_AGC_IF_LEVEL 0 x7F
#define TDA10048_DIG_AGC_LEVEL 0 x81
#define TDA10048_FREQ_PHY2_LSB 0 x86
#define TDA10048_FREQ_PHY2_MSB 0 x87
#define TDA10048_TIME_INVWREF_LSB 0 x88
#define TDA10048_TIME_INVWREF_MSB 0 x89
#define TDA10048_TIME_WREF_LSB 0 x8A
#define TDA10048_TIME_WREF_MID1 0 x8B
#define TDA10048_TIME_WREF_MID2 0 x8C
#define TDA10048_TIME_WREF_MSB 0 x8D
#define TDA10048_NP_OUT 0 xA2
#define TDA10048_CELL_ID_LSB 0 xA4
#define TDA10048_CELL_ID_MSB 0 xA5
#define TDA10048_EXTTPS_ODD 0 xAA
#define TDA10048_EXTTPS_EVEN 0 xAB
#define TDA10048_TPS_LENGTH 0 xAC
#define TDA10048_FREE_REG_1 0 xB2
#define TDA10048_FREE_REG_2 0 xB3
#define TDA10048_CONF_C3_1 0 xC0
#define TDA10048_CVBER_CTRL 0 xC2
#define TDA10048_CBER_NMAX_LSB 0 xC4
#define TDA10048_CBER_NMAX_MSB 0 xC5
#define TDA10048_CBER_LSB 0 xC6
#define TDA10048_CBER_MSB 0 xC7
#define TDA10048_VBER_LSB 0 xC8
#define TDA10048_VBER_MID 0 xC9
#define TDA10048_VBER_MSB 0 xCA
#define TDA10048_CVBER_LUT 0 xCC
#define TDA10048_UNCOR_CTRL 0 xCD
#define TDA10048_UNCOR_CPT_LSB 0 xCE
#define TDA10048_UNCOR_CPT_MSB 0 xCF
#define TDA10048_SOFT_IT_C3 0 xD6
#define TDA10048_CONF_TS2 0 xE0
#define TDA10048_CONF_TS1 0 xE1
static unsigned int debug;
#define dprintk(level, fmt, arg...)\
do { if (debug >= level)\
printk(KERN_DEBUG "tda10048: " fmt, ## arg);\
} while (0 )
struct tda10048_state {
struct i2c_adapter *i2c;
/* We'll cache and update the attach config settings */
struct tda10048_config config;
struct dvb_frontend frontend;
int fwloaded;
u32 freq_if_hz;
u32 xtal_hz;
u32 pll_mfactor;
u32 pll_nfactor;
u32 pll_pfactor;
u32 sample_freq;
u32 bandwidth;
};
static struct init_tab {
u8 reg;
u16 data;
} init_tab[] = {
{ TDA10048_CONF_PLL1, 0 x08 },
{ TDA10048_CONF_ADC_2, 0 x00 },
{ TDA10048_CONF_C4_1, 0 x00 },
{ TDA10048_CONF_PLL1, 0 x0f },
{ TDA10048_CONF_PLL2, 0 x0a },
{ TDA10048_CONF_PLL3, 0 x43 },
{ TDA10048_FREQ_PHY2_LSB, 0 x02 },
{ TDA10048_FREQ_PHY2_MSB, 0 x0a },
{ TDA10048_TIME_WREF_LSB, 0 xbd },
{ TDA10048_TIME_WREF_MID1, 0 xe4 },
{ TDA10048_TIME_WREF_MID2, 0 xa8 },
{ TDA10048_TIME_WREF_MSB, 0 x02 },
{ TDA10048_TIME_INVWREF_LSB, 0 x04 },
{ TDA10048_TIME_INVWREF_MSB, 0 x06 },
{ TDA10048_CONF_C4_1, 0 x00 },
{ TDA10048_CONF_C1_1, 0 xa8 },
{ TDA10048_AGC_CONF, 0 x16 },
{ TDA10048_CONF_C1_3, 0 x0b },
{ TDA10048_AGC_TUN_MIN, 0 x00 },
{ TDA10048_AGC_TUN_MAX, 0 xff },
{ TDA10048_AGC_IF_MIN, 0 x00 },
{ TDA10048_AGC_IF_MAX, 0 xff },
{ TDA10048_AGC_THRESHOLD_MSB, 0 x00 },
{ TDA10048_AGC_THRESHOLD_LSB, 0 x70 },
{ TDA10048_CVBER_CTRL, 0 x38 },
{ TDA10048_AGC_GAINS, 0 x12 },
{ TDA10048_CONF_XO, 0 x00 },
{ TDA10048_CONF_TS1, 0 x07 },
{ TDA10048_IC_MODE, 0 x00 },
{ TDA10048_CONF_TS2, 0 xc0 },
{ TDA10048_CONF_TRISTATE1, 0 x21 },
{ TDA10048_CONF_TRISTATE2, 0 x00 },
{ TDA10048_CONF_POLARITY, 0 x00 },
{ TDA10048_CONF_C4_2, 0 x04 },
{ TDA10048_CONF_ADC, 0 x60 },
{ TDA10048_CONF_ADC_2, 0 x10 },
{ TDA10048_CONF_ADC, 0 x60 },
{ TDA10048_CONF_ADC_2, 0 x00 },
{ TDA10048_CONF_C1_1, 0 xa8 },
{ TDA10048_UNCOR_CTRL, 0 x00 },
{ TDA10048_CONF_C4_2, 0 x04 },
};
static struct pll_tab {
u32 clk_freq_khz;
u32 if_freq_khz;
} pll_tab[] = {
{ TDA10048_CLK_4000, TDA10048_IF_36130 },
{ TDA10048_CLK_16000, TDA10048_IF_3300 },
{ TDA10048_CLK_16000, TDA10048_IF_3500 },
{ TDA10048_CLK_16000, TDA10048_IF_3800 },
{ TDA10048_CLK_16000, TDA10048_IF_4000 },
{ TDA10048_CLK_16000, TDA10048_IF_4300 },
{ TDA10048_CLK_16000, TDA10048_IF_4500 },
{ TDA10048_CLK_16000, TDA10048_IF_5000 },
{ TDA10048_CLK_16000, TDA10048_IF_36130 },
};
static int tda10048_writereg(struct tda10048_state *state, u8 reg, u8 data)
{
struct tda10048_config *config = &state->config;
int ret;
u8 buf[] = { reg, data };
struct i2c_msg msg = {
.addr = config->demod_address,
.flags = 0 , .buf = buf, .len = 2 };
dprintk(2 , "%s(reg = 0x%02x, data = 0x%02x)\n" , __func__, reg, data);
ret = i2c_transfer(state->i2c, &msg, 1 );
if (ret != 1 )
printk("%s: writereg error (ret == %i)\n" , __func__, ret);
return (ret != 1 ) ? -1 : 0 ;
}
static u8 tda10048_readreg(struct tda10048_state *state, u8 reg)
{
struct tda10048_config *config = &state->config;
int ret;
u8 b0[] = { reg };
u8 b1[] = { 0 };
struct i2c_msg msg[] = {
{ .addr = config->demod_address,
.flags = 0 , .buf = b0, .len = 1 },
{ .addr = config->demod_address,
.flags = I2C_M_RD, .buf = b1, .len = 1 } };
dprintk(2 , "%s(reg = 0x%02x)\n" , __func__, reg);
ret = i2c_transfer(state->i2c, msg, 2 );
if (ret != 2 )
printk(KERN_ERR "%s: readreg error (ret == %i)\n" ,
__func__, ret);
return b1[0 ];
}
static int tda10048_writeregbulk(struct tda10048_state *state, u8 reg,
const u8 *data, u16 len)
{
struct tda10048_config *config = &state->config;
int ret = -EREMOTEIO;
struct i2c_msg msg;
u8 *buf;
dprintk(2 , "%s(%d, ?, len = %d)\n" , __func__, reg, len);
buf = kmalloc(len + 1 , GFP_KERNEL);
if (buf == NULL) {
ret = -ENOMEM;
goto error;
}
*buf = reg;
memcpy(buf + 1 , data, len);
msg.addr = config->demod_address;
msg.flags = 0 ;
msg.buf = buf;
msg.len = len + 1 ;
dprintk(2 , "%s(): write len = %d\n" ,
__func__, msg.len);
ret = i2c_transfer(state->i2c, &msg, 1 );
if (ret != 1 ) {
printk(KERN_ERR "%s(): writereg error err %i\n" ,
__func__, ret);
ret = -EREMOTEIO;
}
error:
kfree(buf);
return ret;
}
static int tda10048_set_phy2(struct dvb_frontend *fe, u32 sample_freq_hz,
u32 if_hz)
{
struct tda10048_state *state = fe->demodulator_priv;
u64 t;
dprintk(1 , "%s()\n" , __func__);
if (sample_freq_hz == 0 )
return -EINVAL;
if (if_hz < (sample_freq_hz / 2 )) {
/* PHY2 = (if2/fs) * 2^15 */
t = if_hz;
t *= 10 ;
t *= 32768 ;
do_div(t, sample_freq_hz);
t += 5 ;
do_div(t, 10 );
} else {
/* PHY2 = ((IF1-fs)/fs) * 2^15 */
t = sample_freq_hz - if_hz;
t *= 10 ;
t *= 32768 ;
do_div(t, sample_freq_hz);
t += 5 ;
do_div(t, 10 );
t = ~t + 1 ;
}
tda10048_writereg(state, TDA10048_FREQ_PHY2_LSB, (u8)t);
tda10048_writereg(state, TDA10048_FREQ_PHY2_MSB, (u8)(t >> 8 ));
return 0 ;
}
static int tda10048_set_wref(struct dvb_frontend *fe, u32 sample_freq_hz,
u32 bw)
{
struct tda10048_state *state = fe->demodulator_priv;
u64 t;
u32 z;
dprintk(1 , "%s()\n" , __func__);
if (sample_freq_hz == 0 )
return -EINVAL;
/* WREF = (B / (7 * fs)) * 2^31 */
t = bw * 10 ;
/* avoid warning: this decimal constant is unsigned only in ISO C90 */
/* t *= 2147483648 on 32bit platforms */
t *= (2048 * 1024 );
t *= 1024 ;
/*
* Sample frequency is typically 55 MHz, with a theoretical maximum of
* 69 MHz. With a 32 bit z we have enough accuracy for up to 613 MHz.
*/
z = 7 * sample_freq_hz;
do_div(t, z);
t += 5 ;
do_div(t, 10 );
tda10048_writereg(state, TDA10048_TIME_WREF_LSB, (u8)t);
tda10048_writereg(state, TDA10048_TIME_WREF_MID1, (u8)(t >> 8 ));
tda10048_writereg(state, TDA10048_TIME_WREF_MID2, (u8)(t >> 16 ));
tda10048_writereg(state, TDA10048_TIME_WREF_MSB, (u8)(t >> 24 ));
return 0 ;
}
static int tda10048_set_invwref(struct dvb_frontend *fe, u32 sample_freq_hz,
u32 bw)
{
struct tda10048_state *state = fe->demodulator_priv;
u64 t;
dprintk(1 , "%s()\n" , __func__);
if (sample_freq_hz == 0 )
return -EINVAL;
/* INVWREF = ((7 * fs) / B) * 2^5 */
t = sample_freq_hz;
t *= 7 ;
t *= 32 ;
t *= 10 ;
do_div(t, bw);
t += 5 ;
do_div(t, 10 );
tda10048_writereg(state, TDA10048_TIME_INVWREF_LSB, (u8)t);
tda10048_writereg(state, TDA10048_TIME_INVWREF_MSB, (u8)(t >> 8 ));
return 0 ;
}
static int tda10048_set_bandwidth(struct dvb_frontend *fe,
u32 bw)
{
struct tda10048_state *state = fe->demodulator_priv;
dprintk(1 , "%s(bw=%d)\n" , __func__, bw);
/* Bandwidth setting may need to be adjusted */
switch (bw) {
case 6000000 :
case 7000000 :
case 8000000 :
tda10048_set_wref(fe, state->sample_freq, bw);
tda10048_set_invwref(fe, state->sample_freq, bw);
break ;
default :
printk(KERN_ERR "%s() invalid bandwidth\n" , __func__);
return -EINVAL;
}
state->bandwidth = bw;
return 0 ;
}
static int tda10048_set_if(struct dvb_frontend *fe, u32 bw)
{
struct tda10048_state *state = fe->demodulator_priv;
struct tda10048_config *config = &state->config;
int i;
u32 if_freq_khz;
u64 sample_freq;
dprintk(1 , "%s(bw = %d)\n" , __func__, bw);
/* based on target bandwidth and clk we calculate pll factors */
switch (bw) {
case 6000000 :
if_freq_khz = config->dtv6_if_freq_khz;
break ;
case 7000000 :
if_freq_khz = config->dtv7_if_freq_khz;
break ;
case 8000000 :
if_freq_khz = config->dtv8_if_freq_khz;
break ;
default :
printk(KERN_ERR "%s() no default\n" , __func__);
return -EINVAL;
}
for (i = 0 ; i < ARRAY_SIZE(pll_tab); i++) {
if ((pll_tab[i].clk_freq_khz == config->clk_freq_khz) &&
(pll_tab[i].if_freq_khz == if_freq_khz)) {
state->freq_if_hz = pll_tab[i].if_freq_khz * 1000 ;
state->xtal_hz = pll_tab[i].clk_freq_khz * 1000 ;
break ;
}
}
if (i == ARRAY_SIZE(pll_tab)) {
printk(KERN_ERR "%s() Incorrect attach settings\n" ,
__func__);
return -EINVAL;
}
dprintk(1 , "- freq_if_hz = %d\n" , state->freq_if_hz);
dprintk(1 , "- xtal_hz = %d\n" , state->xtal_hz);
dprintk(1 , "- pll_mfactor = %d\n" , state->pll_mfactor);
dprintk(1 , "- pll_nfactor = %d\n" , state->pll_nfactor);
dprintk(1 , "- pll_pfactor = %d\n" , state->pll_pfactor);
/* Calculate the sample frequency */
sample_freq = state->xtal_hz;
sample_freq *= state->pll_mfactor + 45 ;
do_div(sample_freq, state->pll_nfactor + 1 );
do_div(sample_freq, state->pll_pfactor + 4 );
state->sample_freq = sample_freq;
dprintk(1 , "- sample_freq = %d\n" , state->sample_freq);
/* Update the I/F */
tda10048_set_phy2(fe, state->sample_freq, state->freq_if_hz);
return 0 ;
}
static int tda10048_firmware_upload(struct dvb_frontend *fe)
{
struct tda10048_state *state = fe->demodulator_priv;
struct tda10048_config *config = &state->config;
const struct firmware *fw;
int ret;
int pos = 0 ;
int cnt;
u8 wlen = config->fwbulkwritelen;
if ((wlen != TDA10048_BULKWRITE_200) && (wlen != TDA10048_BULKWRITE_50))
wlen = TDA10048_BULKWRITE_200;
/* request the firmware, this will block and timeout */
printk(KERN_INFO "%s: waiting for firmware upload (%s)...\n" ,
__func__,
TDA10048_DEFAULT_FIRMWARE);
ret = request_firmware(&fw, TDA10048_DEFAULT_FIRMWARE,
state->i2c->dev.parent);
if (ret) {
printk(KERN_ERR "%s: Upload failed. (file not found?)\n" ,
__func__);
return -EIO;
} else {
printk(KERN_INFO "%s: firmware read %zu bytes.\n" ,
__func__,
fw->size);
ret = 0 ;
}
if (fw->size != TDA10048_DEFAULT_FIRMWARE_SIZE) {
printk(KERN_ERR "%s: firmware incorrect size\n" , __func__);
ret = -EIO;
} else {
printk(KERN_INFO "%s: firmware uploading\n" , __func__);
/* Soft reset */
tda10048_writereg(state, TDA10048_CONF_TRISTATE1,
tda10048_readreg(state, TDA10048_CONF_TRISTATE1)
& 0 xfe);
tda10048_writereg(state, TDA10048_CONF_TRISTATE1,
tda10048_readreg(state, TDA10048_CONF_TRISTATE1)
| 0 x01);
/* Put the demod into host download mode */
tda10048_writereg(state, TDA10048_CONF_C4_1,
tda10048_readreg(state, TDA10048_CONF_C4_1) & 0 xf9);
/* Boot the DSP */
tda10048_writereg(state, TDA10048_CONF_C4_1,
tda10048_readreg(state, TDA10048_CONF_C4_1) | 0 x08);
/* Prepare for download */
tda10048_writereg(state, TDA10048_DSP_CODE_CPT, 0 );
/* Download the firmware payload */
while (pos < fw->size) {
if ((fw->size - pos) > wlen)
cnt = wlen;
else
cnt = fw->size - pos;
tda10048_writeregbulk(state, TDA10048_DSP_CODE_IN,
&fw->data[pos], cnt);
pos += cnt;
}
ret = -EIO;
/* Wait up to 250ms for the DSP to boot */
for (cnt = 0 ; cnt < 250 ; cnt += 10 ) {
msleep(10 );
if (tda10048_readreg(state, TDA10048_SYNC_STATUS)
& 0 x40) {
ret = 0 ;
break ;
}
}
}
release_firmware(fw);
if (ret == 0 ) {
printk(KERN_INFO "%s: firmware uploaded\n" , __func__);
state->fwloaded = 1 ;
} else
printk(KERN_ERR "%s: firmware upload failed\n" , __func__);
return ret;
}
static int tda10048_set_inversion(struct dvb_frontend *fe, int inversion)
{
struct tda10048_state *state = fe->demodulator_priv;
dprintk(1 , "%s(%d)\n" , __func__, inversion);
if (inversion == TDA10048_INVERSION_ON)
tda10048_writereg(state, TDA10048_CONF_C1_1,
tda10048_readreg(state, TDA10048_CONF_C1_1) | 0 x20);
else
tda10048_writereg(state, TDA10048_CONF_C1_1,
tda10048_readreg(state, TDA10048_CONF_C1_1) & 0 xdf);
return 0 ;
}
/* Retrieve the demod settings */
static int tda10048_get_tps(struct tda10048_state *state,
struct dtv_frontend_properties *p)
{
u8 val;
/* Make sure the TPS regs are valid */
if (!(tda10048_readreg(state, TDA10048_AUTO) & 0 x01))
return -EAGAIN;
val = tda10048_readreg(state, TDA10048_OUT_CONF2);
switch ((val & 0 x60) >> 5 ) {
case 0 :
p->modulation = QPSK;
break ;
case 1 :
p->modulation = QAM_16;
break ;
case 2 :
p->modulation = QAM_64;
break ;
}
switch ((val & 0 x18) >> 3 ) {
case 0 :
p->hierarchy = HIERARCHY_NONE;
break ;
case 1 :
p->hierarchy = HIERARCHY_1;
break ;
case 2 :
p->hierarchy = HIERARCHY_2;
break ;
case 3 :
p->hierarchy = HIERARCHY_4;
break ;
}
switch (val & 0 x07) {
case 0 :
p->code_rate_HP = FEC_1_2;
break ;
case 1 :
p->code_rate_HP = FEC_2_3;
break ;
case 2 :
p->code_rate_HP = FEC_3_4;
break ;
case 3 :
p->code_rate_HP = FEC_5_6;
break ;
case 4 :
p->code_rate_HP = FEC_7_8;
break ;
}
val = tda10048_readreg(state, TDA10048_OUT_CONF3);
switch (val & 0 x07) {
case 0 :
p->code_rate_LP = FEC_1_2;
break ;
case 1 :
p->code_rate_LP = FEC_2_3;
break ;
case 2 :
p->code_rate_LP = FEC_3_4;
break ;
case 3 :
p->code_rate_LP = FEC_5_6;
break ;
case 4 :
p->code_rate_LP = FEC_7_8;
break ;
}
val = tda10048_readreg(state, TDA10048_OUT_CONF1);
switch ((val & 0 x0c) >> 2 ) {
case 0 :
p->guard_interval = GUARD_INTERVAL_1_32;
break ;
case 1 :
p->guard_interval = GUARD_INTERVAL_1_16;
break ;
case 2 :
p->guard_interval = GUARD_INTERVAL_1_8;
break ;
case 3 :
p->guard_interval = GUARD_INTERVAL_1_4;
break ;
}
switch (val & 0 x03) {
case 0 :
p->transmission_mode = TRANSMISSION_MODE_2K;
break ;
case 1 :
p->transmission_mode = TRANSMISSION_MODE_8K;
break ;
}
return 0 ;
}
static int tda10048_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
{
struct tda10048_state *state = fe->demodulator_priv;
struct tda10048_config *config = &state->config;
dprintk(1 , "%s(%d)\n" , __func__, enable);
if (config->disable_gate_access)
return 0 ;
if (enable)
return tda10048_writereg(state, TDA10048_CONF_C4_1,
tda10048_readreg(state, TDA10048_CONF_C4_1) | 0 x02);
else
return tda10048_writereg(state, TDA10048_CONF_C4_1,
tda10048_readreg(state, TDA10048_CONF_C4_1) & 0 xfd);
}
static int tda10048_output_mode(struct dvb_frontend *fe, int serial)
{
struct tda10048_state *state = fe->demodulator_priv;
dprintk(1 , "%s(%d)\n" , __func__, serial);
/* Ensure pins are out of tri-state */
tda10048_writereg(state, TDA10048_CONF_TRISTATE1, 0 x21);
tda10048_writereg(state, TDA10048_CONF_TRISTATE2, 0 x00);
if (serial) {
tda10048_writereg(state, TDA10048_IC_MODE, 0 x80 | 0 x20);
tda10048_writereg(state, TDA10048_CONF_TS2, 0 xc0);
} else {
tda10048_writereg(state, TDA10048_IC_MODE, 0 x00);
tda10048_writereg(state, TDA10048_CONF_TS2, 0 x01);
}
return 0 ;
}
/* Talk to the demod, set the FEC, GUARD, QAM settings etc */
/* TODO: Support manual tuning with specific params */
static int tda10048_set_frontend(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
struct tda10048_state *state = fe->demodulator_priv;
dprintk(1 , "%s(frequency=%d)\n" , __func__, p->frequency);
/* Update the I/F pll's if the bandwidth changes */
if (p->bandwidth_hz != state->bandwidth) {
tda10048_set_if(fe, p->bandwidth_hz);
tda10048_set_bandwidth(fe, p->bandwidth_hz);
}
if (fe->ops.tuner_ops.set_params) {
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1 );
fe->ops.tuner_ops.set_params(fe);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0 );
}
/* Enable demod TPS auto detection and begin acquisition */
tda10048_writereg(state, TDA10048_AUTO, 0 x57);
/* trigger cber and vber acquisition */
tda10048_writereg(state, TDA10048_CVBER_CTRL, 0 x3B);
return 0 ;
}
/* Establish sane defaults and load firmware. */
static int tda10048_init(struct dvb_frontend *fe)
{
struct tda10048_state *state = fe->demodulator_priv;
struct tda10048_config *config = &state->config;
int ret = 0 , i;
dprintk(1 , "%s()\n" , __func__);
/* PLL */
init_tab[4 ].data = (u8)(state->pll_mfactor);
init_tab[5 ].data = (u8)(state->pll_nfactor) | 0 x40;
/* Apply register defaults */
for (i = 0 ; i < ARRAY_SIZE(init_tab); i++)
tda10048_writereg(state, init_tab[i].reg, init_tab[i].data);
if (state->fwloaded == 0 )
ret = tda10048_firmware_upload(fe);
/* Set either serial or parallel */
tda10048_output_mode(fe, config->output_mode);
/* Set inversion */
tda10048_set_inversion(fe, config->inversion);
/* Establish default RF values */
tda10048_set_if(fe, 8000000 );
tda10048_set_bandwidth(fe, 8000000 );
/* Ensure we leave the gate closed */
tda10048_i2c_gate_ctrl(fe, 0 );
return ret;
}
static int tda10048_read_status(struct dvb_frontend *fe, enum fe_status *status)
{
struct tda10048_state *state = fe->demodulator_priv;
u8 reg;
*status = 0 ;
reg = tda10048_readreg(state, TDA10048_SYNC_STATUS);
dprintk(1 , "%s() status =0x%02x\n" , __func__, reg);
if (reg & 0 x02)
*status |= FE_HAS_CARRIER;
if (reg & 0 x04)
*status |= FE_HAS_SIGNAL;
if (reg & 0 x08) {
*status |= FE_HAS_LOCK;
*status |= FE_HAS_VITERBI;
*status |= FE_HAS_SYNC;
}
return 0 ;
}
static int tda10048_read_ber(struct dvb_frontend *fe, u32 *ber)
{
struct tda10048_state *state = fe->demodulator_priv;
static u32 cber_current;
u32 cber_nmax;
u64 cber_tmp;
dprintk(1 , "%s()\n" , __func__);
/* update cber on interrupt */
if (tda10048_readreg(state, TDA10048_SOFT_IT_C3) & 0 x01) {
cber_tmp = tda10048_readreg(state, TDA10048_CBER_MSB) << 8 |
tda10048_readreg(state, TDA10048_CBER_LSB);
cber_nmax = tda10048_readreg(state, TDA10048_CBER_NMAX_MSB) << 8 |
tda10048_readreg(state, TDA10048_CBER_NMAX_LSB);
cber_tmp *= 100000000 ;
cber_tmp *= 2 ;
cber_tmp = div_u64(cber_tmp, (cber_nmax * 32 ) + 1 );
cber_current = (u32)cber_tmp;
/* retrigger cber acquisition */
tda10048_writereg(state, TDA10048_CVBER_CTRL, 0 x39);
}
/* actual cber is (*ber)/1e8 */
*ber = cber_current;
return 0 ;
}
static int tda10048_read_signal_strength(struct dvb_frontend *fe,
u16 *signal_strength)
{
struct tda10048_state *state = fe->demodulator_priv;
u8 v;
dprintk(1 , "%s()\n" , __func__);
*signal_strength = 65535 ;
v = tda10048_readreg(state, TDA10048_NP_OUT);
if (v > 0 )
*signal_strength -= (v << 8 ) | v;
return 0 ;
}
/* SNR lookup table */
static struct snr_tab {
u8 val;
u8 data;
} snr_tab[] = {
{ 0 , 0 },
{ 1 , 246 },
{ 2 , 215 },
{ 3 , 198 },
{ 4 , 185 },
{ 5 , 176 },
{ 6 , 168 },
{ 7 , 161 },
{ 8 , 155 },
{ 9 , 150 },
{ 10 , 146 },
{ 11 , 141 },
{ 12 , 138 },
{ 13 , 134 },
{ 14 , 131 },
{ 15 , 128 },
{ 16 , 125 },
{ 17 , 122 },
{ 18 , 120 },
{ 19 , 118 },
{ 20 , 115 },
{ 21 , 113 },
{ 22 , 111 },
{ 23 , 109 },
{ 24 , 107 },
{ 25 , 106 },
{ 26 , 104 },
{ 27 , 102 },
{ 28 , 101 },
{ 29 , 99 },
{ 30 , 98 },
{ 31 , 96 },
{ 32 , 95 },
{ 33 , 94 },
{ 34 , 92 },
{ 35 , 91 },
{ 36 , 90 },
{ 37 , 89 },
{ 38 , 88 },
{ 39 , 86 },
{ 40 , 85 },
{ 41 , 84 },
{ 42 , 83 },
{ 43 , 82 },
{ 44 , 81 },
{ 45 , 80 },
{ 46 , 79 },
{ 47 , 78 },
{ 48 , 77 },
{ 49 , 76 },
{ 50 , 76 },
{ 51 , 75 },
{ 52 , 74 },
{ 53 , 73 },
{ 54 , 72 },
{ 56 , 71 },
{ 57 , 70 },
{ 58 , 69 },
{ 60 , 68 },
{ 61 , 67 },
{ 63 , 66 },
{ 64 , 65 },
{ 66 , 64 },
{ 67 , 63 },
{ 68 , 62 },
{ 69 , 62 },
{ 70 , 61 },
{ 72 , 60 },
{ 74 , 59 },
{ 75 , 58 },
{ 77 , 57 },
{ 79 , 56 },
{ 81 , 55 },
{ 83 , 54 },
{ 85 , 53 },
{ 87 , 52 },
{ 89 , 51 },
{ 91 , 50 },
{ 93 , 49 },
{ 95 , 48 },
{ 97 , 47 },
{ 100 , 46 },
{ 102 , 45 },
{ 104 , 44 },
{ 107 , 43 },
{ 109 , 42 },
{ 112 , 41 },
{ 114 , 40 },
{ 117 , 39 },
{ 120 , 38 },
{ 123 , 37 },
{ 125 , 36 },
{ 128 , 35 },
{ 131 , 34 },
{ 134 , 33 },
{ 138 , 32 },
{ 141 , 31 },
{ 144 , 30 },
{ 147 , 29 },
{ 151 , 28 },
{ 154 , 27 },
{ 158 , 26 },
{ 162 , 25 },
{ 165 , 24 },
{ 169 , 23 },
{ 173 , 22 },
{ 177 , 21 },
{ 181 , 20 },
{ 186 , 19 },
{ 190 , 18 },
{ 194 , 17 },
{ 199 , 16 },
{ 204 , 15 },
{ 208 , 14 },
{ 213 , 13 },
{ 218 , 12 },
{ 223 , 11 },
{ 229 , 10 },
{ 234 , 9 },
{ 239 , 8 },
{ 245 , 7 },
{ 251 , 6 },
{ 255 , 5 },
};
static int tda10048_read_snr(struct dvb_frontend *fe, u16 *snr)
{
struct tda10048_state *state = fe->demodulator_priv;
u8 v;
int i, ret = -EINVAL;
dprintk(1 , "%s()\n" , __func__);
v = tda10048_readreg(state, TDA10048_NP_OUT);
for (i = 0 ; i < ARRAY_SIZE(snr_tab); i++) {
if (v <= snr_tab[i].val) {
*snr = snr_tab[i].data;
ret = 0 ;
break ;
}
}
return ret;
}
static int tda10048_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
{
struct tda10048_state *state = fe->demodulator_priv;
dprintk(1 , "%s()\n" , __func__);
*ucblocks = tda10048_readreg(state, TDA10048_UNCOR_CPT_MSB) << 8 |
tda10048_readreg(state, TDA10048_UNCOR_CPT_LSB);
/* clear the uncorrected TS packets counter when saturated */
if (*ucblocks == 0 xFFFF)
tda10048_writereg(state, TDA10048_UNCOR_CTRL, 0 x80);
return 0 ;
}
static int tda10048_get_frontend(struct dvb_frontend *fe,
struct dtv_frontend_properties *p)
{
struct tda10048_state *state = fe->demodulator_priv;
dprintk(1 , "%s()\n" , __func__);
p->inversion = tda10048_readreg(state, TDA10048_CONF_C1_1)
& 0 x20 ? INVERSION_ON : INVERSION_OFF;
return tda10048_get_tps(state, p);
}
static int tda10048_get_tune_settings(struct dvb_frontend *fe,
struct dvb_frontend_tune_settings *tune)
{
tune->min_delay_ms = 1000 ;
return 0 ;
}
static void tda10048_release(struct dvb_frontend *fe)
{
struct tda10048_state *state = fe->demodulator_priv;
dprintk(1 , "%s()\n" , __func__);
kfree(state);
}
static void tda10048_establish_defaults(struct dvb_frontend *fe)
{
struct tda10048_state *state = fe->demodulator_priv;
struct tda10048_config *config = &state->config;
/* Validate/default the config */
if (config->dtv6_if_freq_khz == 0 ) {
config->dtv6_if_freq_khz = TDA10048_IF_4300;
printk(KERN_WARNING "%s() tda10048_config.dtv6_if_freq_khz is not set (defaulting to %d)\n" ,
__func__,
config->dtv6_if_freq_khz);
}
if (config->dtv7_if_freq_khz == 0 ) {
config->dtv7_if_freq_khz = TDA10048_IF_4300;
printk(KERN_WARNING "%s() tda10048_config.dtv7_if_freq_khz is not set (defaulting to %d)\n" ,
__func__,
config->dtv7_if_freq_khz);
}
if (config->dtv8_if_freq_khz == 0 ) {
config->dtv8_if_freq_khz = TDA10048_IF_4300;
printk(KERN_WARNING "%s() tda10048_config.dtv8_if_freq_khz is not set (defaulting to %d)\n" ,
__func__,
config->dtv8_if_freq_khz);
}
if (config->clk_freq_khz == 0 ) {
config->clk_freq_khz = TDA10048_CLK_16000;
printk(KERN_WARNING "%s() tda10048_config.clk_freq_khz is not set (defaulting to %d)\n" ,
__func__,
config->clk_freq_khz);
}
}
static const struct dvb_frontend_ops tda10048_ops;
struct dvb_frontend *tda10048_attach(const struct tda10048_config *config,
struct i2c_adapter *i2c)
{
struct tda10048_state *state = NULL;
dprintk(1 , "%s()\n" , __func__);
/* allocate memory for the internal state */
state = kzalloc(sizeof (struct tda10048_state), GFP_KERNEL);
if (state == NULL)
goto error;
/* setup the state and clone the config */
memcpy(&state->config, config, sizeof (*config));
state->i2c = i2c;
state->fwloaded = config->no_firmware;
state->bandwidth = 8000000 ;
/* check if the demod is present */
if (tda10048_readreg(state, TDA10048_IDENTITY) != 0 x048)
goto error;
/* create dvb_frontend */
memcpy(&state->frontend.ops, &tda10048_ops,
sizeof (struct dvb_frontend_ops));
state->frontend.demodulator_priv = state;
/* set pll */
if (config->set_pll) {
state->pll_mfactor = config->pll_m;
state->pll_nfactor = config->pll_n;
state->pll_pfactor = config->pll_p;
} else {
state->pll_mfactor = 10 ;
state->pll_nfactor = 3 ;
state->pll_pfactor = 0 ;
}
/* Establish any defaults the user didn't pass */
tda10048_establish_defaults(&state->frontend);
/* Set the xtal and freq defaults */
if (tda10048_set_if(&state->frontend, 8000000 ) != 0 )
goto error;
/* Default bandwidth */
if (tda10048_set_bandwidth(&state->frontend, 8000000 ) != 0 )
goto error;
/* Leave the gate closed */
tda10048_i2c_gate_ctrl(&state->frontend, 0 );
return &state->frontend;
error:
kfree(state);
return NULL;
}
EXPORT_SYMBOL_GPL(tda10048_attach);
static const struct dvb_frontend_ops tda10048_ops = {
.delsys = { SYS_DVBT },
.info = {
.name = "NXP TDA10048HN DVB-T" ,
.frequency_min_hz = 177 * MHz,
.frequency_max_hz = 858 * MHz,
.frequency_stepsize_hz = 166666 ,
.caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
FE_CAN_HIERARCHY_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_RECOVER
},
.release = tda10048_release,
.init = tda10048_init,
.i2c_gate_ctrl = tda10048_i2c_gate_ctrl,
.set_frontend = tda10048_set_frontend,
.get_frontend = tda10048_get_frontend,
.get_tune_settings = tda10048_get_tune_settings,
.read_status = tda10048_read_status,
.read_ber = tda10048_read_ber,
.read_signal_strength = tda10048_read_signal_strength,
.read_snr = tda10048_read_snr,
.read_ucblocks = tda10048_read_ucblocks,
};
module_param(debug, int , 0644 );
MODULE_PARM_DESC(debug, "Enable verbose debug messages" );
MODULE_DESCRIPTION("NXP TDA10048HN DVB-T Demodulator driver" );
MODULE_AUTHOR("Steven Toth" );
MODULE_LICENSE("GPL" );
Messung V0.5 in Prozent C=95 H=88 G=91
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(vorverarbeitet am 2026-06-05)
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