// SPDX-License-Identifier: GPL-2.0-or-later
/*
i2c tv tuner chip device driver
controls the philips tda8290+75 tuner chip combo.
This "tda8290" module was split apart from the original "tuner" module.
*/
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/videodev2.h>
#include "tuner-i2c.h"
#include "tda8290.h"
#include "tda827x.h"
#include "tda18271.h"
static int debug;
module_param(debug, int , 0644 );
MODULE_PARM_DESC(debug, "enable verbose debug messages" );
static int deemphasis_50;
module_param(deemphasis_50, int , 0644 );
MODULE_PARM_DESC(deemphasis_50, "0 - 75us deemphasis; 1 - 50us deemphasis" );
/* ---------------------------------------------------------------------- */
struct tda8290_priv {
struct tuner_i2c_props i2c_props;
unsigned char tda8290_easy_mode;
unsigned char tda827x_addr;
unsigned char ver;
#define TDA8290 1
#define TDA8295 2
#define TDA8275 4
#define TDA8275A 8
#define TDA18271 16
struct tda827x_config cfg;
struct tda18271_std_map *tda18271_std_map;
};
/*---------------------------------------------------------------------*/
static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
static unsigned char enable[2 ] = { 0 x21, 0 xC0 };
static unsigned char disable[2 ] = { 0 x21, 0 x00 };
unsigned char *msg;
if (close) {
msg = enable;
tuner_i2c_xfer_send(&priv->i2c_props, msg, 2 );
/* let the bridge stabilize */
msleep(20 );
} else {
msg = disable;
tuner_i2c_xfer_send(&priv->i2c_props, msg, 2 );
}
return 0 ;
}
static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
static unsigned char enable[2 ] = { 0 x45, 0 xc1 };
static unsigned char disable[2 ] = { 0 x46, 0 x00 };
static unsigned char buf[3 ] = { 0 x45, 0 x01, 0 x00 };
unsigned char *msg;
if (close) {
msg = enable;
tuner_i2c_xfer_send(&priv->i2c_props, msg, 2 );
/* let the bridge stabilize */
msleep(20 );
} else {
msg = disable;
tuner_i2c_xfer_send_recv(&priv->i2c_props, msg, 1 , &msg[1 ], 1 );
buf[2 ] = msg[1 ];
buf[2 ] &= ~0 x04;
tuner_i2c_xfer_send(&priv->i2c_props, buf, 3 );
msleep(5 );
msg[1 ] |= 0 x04;
tuner_i2c_xfer_send(&priv->i2c_props, msg, 2 );
}
return 0 ;
}
/*---------------------------------------------------------------------*/
static void set_audio(struct dvb_frontend *fe,
struct analog_parameters *params)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
char * mode;
if (params->std & V4L2_STD_MN) {
priv->tda8290_easy_mode = 0 x01;
mode = "MN" ;
} else if (params->std & V4L2_STD_B) {
priv->tda8290_easy_mode = 0 x02;
mode = "B" ;
} else if (params->std & V4L2_STD_GH) {
priv->tda8290_easy_mode = 0 x04;
mode = "GH" ;
} else if (params->std & V4L2_STD_PAL_I) {
priv->tda8290_easy_mode = 0 x08;
mode = "I" ;
} else if (params->std & V4L2_STD_DK) {
priv->tda8290_easy_mode = 0 x10;
mode = "DK" ;
} else if (params->std & V4L2_STD_SECAM_L) {
priv->tda8290_easy_mode = 0 x20;
mode = "L" ;
} else if (params->std & V4L2_STD_SECAM_LC) {
priv->tda8290_easy_mode = 0 x40;
mode = "LC" ;
} else {
priv->tda8290_easy_mode = 0 x10;
mode = "xx" ;
}
if (params->mode == V4L2_TUNER_RADIO) {
/* Set TDA8295 to FM radio; Start TDA8290 with MN values */
priv->tda8290_easy_mode = (priv->ver & TDA8295) ? 0 x80 : 0 x01;
tuner_dbg("setting to radio FM\n" );
} else {
tuner_dbg("setting tda829x to system %s\n" , mode);
}
}
static struct {
unsigned char seq[2 ];
} fm_mode[] = {
{ { 0 x01, 0 x81} }, /* Put device into expert mode */
{ { 0 x03, 0 x48} }, /* Disable NOTCH and VIDEO filters */
{ { 0 x04, 0 x04} }, /* Disable color carrier filter (SSIF) */
{ { 0 x05, 0 x04} }, /* ADC headroom */
{ { 0 x06, 0 x10} }, /* group delay flat */
{ { 0 x07, 0 x00} }, /* use the same radio DTO values as a tda8295 */
{ { 0 x08, 0 x00} },
{ { 0 x09, 0 x80} },
{ { 0 x0a, 0 xda} },
{ { 0 x0b, 0 x4b} },
{ { 0 x0c, 0 x68} },
{ { 0 x0d, 0 x00} }, /* PLL off, no video carrier detect */
{ { 0 x14, 0 x00} }, /* disable auto mute if no video */
};
static void tda8290_set_params(struct dvb_frontend *fe,
struct analog_parameters *params)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
static unsigned char soft_reset[] = { 0 x00, 0 x00 };
unsigned char easy_mode[] = { 0 x01, priv->tda8290_easy_mode };
static unsigned char expert_mode[] = { 0 x01, 0 x80 };
static unsigned char agc_out_on[] = { 0 x02, 0 x00 };
static unsigned char gainset_off[] = { 0 x28, 0 x14 };
static unsigned char if_agc_spd[] = { 0 x0f, 0 x88 };
static unsigned char adc_head_6[] = { 0 x05, 0 x04 };
static unsigned char adc_head_9[] = { 0 x05, 0 x02 };
static unsigned char adc_head_12[] = { 0 x05, 0 x01 };
static unsigned char pll_bw_nom[] = { 0 x0d, 0 x47 };
static unsigned char pll_bw_low[] = { 0 x0d, 0 x27 };
static unsigned char gainset_2[] = { 0 x28, 0 x64 };
static unsigned char agc_rst_on[] = { 0 x0e, 0 x0b };
static unsigned char agc_rst_off[] = { 0 x0e, 0 x09 };
static unsigned char if_agc_set[] = { 0 x0f, 0 x81 };
static unsigned char addr_adc_sat = 0 x1a;
static unsigned char addr_agc_stat = 0 x1d;
static unsigned char addr_pll_stat = 0 x1b;
static unsigned char adc_sat = 0 , agc_stat = 0 ,
pll_stat;
int i;
set_audio(fe, params);
if (priv->cfg.config)
tuner_dbg("tda827xa config is 0x%02x\n" , priv->cfg.config);
tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2 );
tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2 );
tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2 );
msleep(1 );
if (params->mode == V4L2_TUNER_RADIO) {
unsigned char deemphasis[] = { 0 x13, 1 };
/* FIXME: allow using a different deemphasis */
if (deemphasis_50)
deemphasis[1 ] = 2 ;
for (i = 0 ; i < ARRAY_SIZE(fm_mode); i++)
tuner_i2c_xfer_send(&priv->i2c_props, fm_mode[i].seq, 2 );
tuner_i2c_xfer_send(&priv->i2c_props, deemphasis, 2 );
} else {
expert_mode[1 ] = priv->tda8290_easy_mode + 0 x80;
tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2 );
tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2 );
tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2 );
if (priv->tda8290_easy_mode & 0 x60)
tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2 );
else
tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2 );
tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2 );
}
if (fe->ops.analog_ops.i2c_gate_ctrl)
fe->ops.analog_ops.i2c_gate_ctrl(fe, 1 );
if (fe->ops.tuner_ops.set_analog_params)
fe->ops.tuner_ops.set_analog_params(fe, params);
for (i = 0 ; i < 3 ; i++) {
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_pll_stat, 1 , &pll_stat, 1 );
if (pll_stat & 0 x80) {
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_adc_sat, 1 ,
&adc_sat, 1 );
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_agc_stat, 1 ,
&agc_stat, 1 );
tuner_dbg("tda8290 is locked, AGC: %d\n" , agc_stat);
break ;
} else {
tuner_dbg("tda8290 not locked, no signal?\n" );
msleep(100 );
}
}
/* adjust headroom resp. gain */
if ((agc_stat > 115 ) || (!(pll_stat & 0 x80) && (adc_sat < 20 ))) {
tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n" ,
agc_stat, adc_sat, pll_stat & 0 x80);
tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2 );
msleep(100 );
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_agc_stat, 1 , &agc_stat, 1 );
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_pll_stat, 1 , &pll_stat, 1 );
if ((agc_stat > 115 ) || !(pll_stat & 0 x80)) {
tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n" ,
agc_stat, pll_stat & 0 x80);
if (priv->cfg.agcf)
priv->cfg.agcf(fe);
msleep(100 );
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_agc_stat, 1 ,
&agc_stat, 1 );
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_pll_stat, 1 ,
&pll_stat, 1 );
if ((agc_stat > 115 ) || !(pll_stat & 0 x80)) {
tuner_dbg("adjust gain, step 3. Agc: %d\n" , agc_stat);
tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2 );
tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2 );
msleep(100 );
}
}
}
/* l/ l' deadlock? */
if (priv->tda8290_easy_mode & 0 x60) {
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_adc_sat, 1 ,
&adc_sat, 1 );
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_pll_stat, 1 ,
&pll_stat, 1 );
if ((adc_sat > 20 ) || !(pll_stat & 0 x80)) {
tuner_dbg("trying to resolve SECAM L deadlock\n" );
tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2 );
msleep(40 );
tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2 );
}
}
if (fe->ops.analog_ops.i2c_gate_ctrl)
fe->ops.analog_ops.i2c_gate_ctrl(fe, 0 );
tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2 );
}
/*---------------------------------------------------------------------*/
static void tda8295_power(struct dvb_frontend *fe, int enable)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char buf[] = { 0 x30, 0 x00 }; /* clb_stdbt */
tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0 ], 1 , &buf['color: green'>1 ], 1 );
if (enable)
buf[1 ] = 0 x01;
else
buf[1 ] = 0 x03;
tuner_i2c_xfer_send(&priv->i2c_props, buf, 2 );
}
static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char buf[] = { 0 x01, 0 x00 };
tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0 ], 1 , &buf['color: green'>1 ], 1 );
if (enable)
buf[1 ] = 0 x01; /* rising edge sets regs 0x02 - 0x23 */
else
buf[1 ] = 0 x00; /* reset active bit */
tuner_i2c_xfer_send(&priv->i2c_props, buf, 2 );
}
static void tda8295_set_video_std(struct dvb_frontend *fe)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char buf[] = { 0 x00, priv->tda8290_easy_mode };
tuner_i2c_xfer_send(&priv->i2c_props, buf, 2 );
tda8295_set_easy_mode(fe, 1 );
msleep(20 );
tda8295_set_easy_mode(fe, 0 );
}
/*---------------------------------------------------------------------*/
static void tda8295_agc1_out(struct dvb_frontend *fe, int enable)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char buf[] = { 0 x02, 0 x00 }; /* DIV_FUNC */
tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0 ], 1 , &buf['color: green'>1 ], 1 );
if (enable)
buf[1 ] &= ~0 x40;
else
buf[1 ] |= 0 x40;
tuner_i2c_xfer_send(&priv->i2c_props, buf, 2 );
}
static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char set_gpio_cf[] = { 0 x44, 0 x00 };
unsigned char set_gpio_val[] = { 0 x46, 0 x00 };
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&set_gpio_cf[0 ], 1 , &set_gpio_cf[1 ], 1 );
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&set_gpio_val[0 ], 1 , &set_gpio_val[1 ], 1 );
set_gpio_cf[1 ] &= 0 xf0; /* clear GPIO_0 bits 3-0 */
if (enable) {
set_gpio_cf[1 ] |= 0 x01; /* config GPIO_0 as Open Drain Out */
set_gpio_val[1 ] &= 0 xfe; /* set GPIO_0 pin low */
}
tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2 );
tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2 );
}
static int tda8295_has_signal(struct dvb_frontend *fe, u16 *signal)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char hvpll_stat = 0 x26;
unsigned char ret;
tuner_i2c_xfer_send_recv(&priv->i2c_props, &hvpll_stat, 1 , &ret, 1 );
*signal = (ret & 0 x01) ? 65535 : 0 ;
return 0 ;
}
/*---------------------------------------------------------------------*/
static void tda8295_set_params(struct dvb_frontend *fe,
struct analog_parameters *params)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
u16 signal = 0 ;
unsigned char blanking_mode[] = { 0 x1d, 0 x00 };
set_audio(fe, params);
tuner_dbg("%s: freq = %d\n" , __func__, params->frequency);
tda8295_power(fe, 1 );
tda8295_agc1_out(fe, 1 );
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&blanking_mode[0 ], 1 , &blanking_mode[1 ], 1 );
tda8295_set_video_std(fe);
blanking_mode[1 ] = 0 x03;
tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2 );
msleep(20 );
if (fe->ops.analog_ops.i2c_gate_ctrl)
fe->ops.analog_ops.i2c_gate_ctrl(fe, 1 );
if (fe->ops.tuner_ops.set_analog_params)
fe->ops.tuner_ops.set_analog_params(fe, params);
if (priv->cfg.agcf)
priv->cfg.agcf(fe);
tda8295_has_signal(fe, &signal);
if (signal)
tuner_dbg("tda8295 is locked\n" );
else
tuner_dbg("tda8295 not locked, no signal?\n" );
if (fe->ops.analog_ops.i2c_gate_ctrl)
fe->ops.analog_ops.i2c_gate_ctrl(fe, 0 );
}
/*---------------------------------------------------------------------*/
static int tda8290_has_signal(struct dvb_frontend *fe, u16 *signal)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char i2c_get_afc[1 ] = { 0 x1B };
unsigned char afc = 0 ;
tuner_i2c_xfer_send_recv(&priv->i2c_props,
i2c_get_afc, ARRAY_SIZE(i2c_get_afc), &afc, 1 );
*signal = (afc & 0 x80) ? 65535 : 0 ;
return 0 ;
}
/*---------------------------------------------------------------------*/
static void tda8290_standby(struct dvb_frontend *fe)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
static unsigned char cb1[] = { 0 x30, 0 xD0 };
static unsigned char tda8290_standby[] = { 0 x00, 0 x02 };
static unsigned char tda8290_agc_tri[] = { 0 x02, 0 x20 };
struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0 , .buf=cb1, .len = 2 };
if (fe->ops.analog_ops.i2c_gate_ctrl)
fe->ops.analog_ops.i2c_gate_ctrl(fe, 1 );
if (priv->ver & TDA8275A)
cb1[1 ] = 0 x90;
i2c_transfer(priv->i2c_props.adap, &msg, 1 );
if (fe->ops.analog_ops.i2c_gate_ctrl)
fe->ops.analog_ops.i2c_gate_ctrl(fe, 0 );
tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2 );
tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2 );
}
static void tda8295_standby(struct dvb_frontend *fe)
{
tda8295_agc1_out(fe, 0 ); /* Put AGC in tri-state */
tda8295_power(fe, 0 );
}
static void tda8290_init_if(struct dvb_frontend *fe)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
static unsigned char set_VS[] = { 0 x30, 0 x6F };
static unsigned char set_GP00_CF[] = { 0 x20, 0 x01 };
static unsigned char set_GP01_CF[] = { 0 x20, 0 x0B };
if ((priv->cfg.config == TDA8290_LNA_GP0_HIGH_ON) ||
(priv->cfg.config == TDA8290_LNA_GP0_HIGH_OFF))
tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2 );
else
tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2 );
tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2 );
}
static void tda8295_init_if(struct dvb_frontend *fe)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
static unsigned char set_adc_ctl[] = { 0 x33, 0 x14 };
static unsigned char set_adc_ctl2[] = { 0 x34, 0 x00 };
static unsigned char set_pll_reg6[] = { 0 x3e, 0 x63 };
static unsigned char set_pll_reg0[] = { 0 x38, 0 x23 };
static unsigned char set_pll_reg7[] = { 0 x3f, 0 x01 };
static unsigned char set_pll_reg10[] = { 0 x42, 0 x61 };
static unsigned char set_gpio_reg0[] = { 0 x44, 0 x0b };
tda8295_power(fe, 1 );
tda8295_set_easy_mode(fe, 0 );
tda8295_set_video_std(fe);
tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2 );
tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2 );
tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2 );
tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2 );
tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2 );
tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2 );
tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2 );
tda8295_agc1_out(fe, 0 );
tda8295_agc2_out(fe, 0 );
}
static void tda8290_init_tuner(struct dvb_frontend *fe)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
static unsigned char tda8275_init[] =
{ 0 x00, 0 x00, 0 x00, 0 x40, 0 xdC, 0 x04, 0 xAf,
0 x3F, 0 x2A, 0 x04, 0 xFF, 0 x00, 0 x00, 0 x40 };
static unsigned char tda8275a_init[] =
{ 0 x00, 0 x00, 0 x00, 0 x00, 0 xdC, 0 x05, 0 x8b,
0 x0c, 0 x04, 0 x20, 0 xFF, 0 x00, 0 x00, 0 x4b };
struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0 ,
.buf=tda8275_init, .len = 14 };
if (priv->ver & TDA8275A)
msg.buf = tda8275a_init;
if (fe->ops.analog_ops.i2c_gate_ctrl)
fe->ops.analog_ops.i2c_gate_ctrl(fe, 1 );
i2c_transfer(priv->i2c_props.adap, &msg, 1 );
if (fe->ops.analog_ops.i2c_gate_ctrl)
fe->ops.analog_ops.i2c_gate_ctrl(fe, 0 );
}
/*---------------------------------------------------------------------*/
static void tda829x_release(struct dvb_frontend *fe)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
/* only try to release the tuner if we've
* attached it from within this module */
if (priv->ver & (TDA18271 | TDA8275 | TDA8275A))
if (fe->ops.tuner_ops.release)
fe->ops.tuner_ops.release(fe);
kfree(fe->analog_demod_priv);
fe->analog_demod_priv = NULL;
}
static struct tda18271_config tda829x_tda18271_config = {
.gate = TDA18271_GATE_ANALOG,
};
static int tda829x_find_tuner(struct dvb_frontend *fe)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
int i, ret, tuners_found;
u32 tuner_addrs;
u8 data;
struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
if (fe->ops.analog_ops.i2c_gate_ctrl)
fe->ops.analog_ops.i2c_gate_ctrl(fe, 1 );
/* probe for tuner chip */
tuners_found = 0 ;
tuner_addrs = 0 ;
for (i = 0 x60; i <= 0 x63; i++) {
msg.addr = i;
ret = i2c_transfer(priv->i2c_props.adap, &msg, 1 );
if (ret == 1 ) {
tuners_found++;
tuner_addrs = (tuner_addrs << 8 ) + i;
}
}
/* if there is more than one tuner, we expect the right one is
behind the bridge and we choose the highest address that doesn't
give a response now
*/
if (fe->ops.analog_ops.i2c_gate_ctrl)
fe->ops.analog_ops.i2c_gate_ctrl(fe, 0 );
if (tuners_found > 1 )
for (i = 0 ; i < tuners_found; i++) {
msg.addr = tuner_addrs & 0 xff;
ret = i2c_transfer(priv->i2c_props.adap, &msg, 1 );
if (ret == 1 )
tuner_addrs = tuner_addrs >> 8 ;
else
break ;
}
if (tuner_addrs == 0 ) {
tuner_addrs = 0 x60;
tuner_info("could not clearly identify tuner address, defaulting to %x\n" ,
tuner_addrs);
} else {
tuner_addrs = tuner_addrs & 0 xff;
tuner_info("setting tuner address to %x\n" , tuner_addrs);
}
priv->tda827x_addr = tuner_addrs;
msg.addr = tuner_addrs;
if (fe->ops.analog_ops.i2c_gate_ctrl)
fe->ops.analog_ops.i2c_gate_ctrl(fe, 1 );
ret = i2c_transfer(priv->i2c_props.adap, &msg, 1 );
if (ret != 1 ) {
tuner_warn("tuner access failed!\n" );
if (fe->ops.analog_ops.i2c_gate_ctrl)
fe->ops.analog_ops.i2c_gate_ctrl(fe, 0 );
return -EREMOTEIO;
}
if ((data == 0 x83) || (data == 0 x84)) {
priv->ver |= TDA18271;
tda829x_tda18271_config.config = priv->cfg.config;
tda829x_tda18271_config.std_map = priv->tda18271_std_map;
dvb_attach(tda18271_attach, fe, priv->tda827x_addr,
priv->i2c_props.adap, &tda829x_tda18271_config);
} else {
if ((data & 0 x3c) == 0 )
priv->ver |= TDA8275;
else
priv->ver |= TDA8275A;
dvb_attach(tda827x_attach, fe, priv->tda827x_addr,
priv->i2c_props.adap, &priv->cfg);
priv->cfg.switch_addr = priv->i2c_props.addr;
}
if (fe->ops.tuner_ops.init)
fe->ops.tuner_ops.init(fe);
if (fe->ops.tuner_ops.sleep)
fe->ops.tuner_ops.sleep(fe);
if (fe->ops.analog_ops.i2c_gate_ctrl)
fe->ops.analog_ops.i2c_gate_ctrl(fe, 0 );
return 0 ;
}
static int tda8290_probe(struct tuner_i2c_props *i2c_props)
{
#define TDA8290_ID 0 x89
u8 reg = 0 x1f, id;
struct i2c_msg msg_read[] = {
{ .addr = i2c_props->addr, .flags = 0 , .len = 1 , .buf = ® },
{ .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1 , .buf = &id },
};
/* detect tda8290 */
if (i2c_transfer(i2c_props->adap, msg_read, 2 ) != 2 ) {
printk(KERN_WARNING "%s: couldn't read register 0x%02x\n" ,
__func__, reg);
return -ENODEV;
}
if (id == TDA8290_ID) {
if (debug)
printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n" ,
__func__, i2c_adapter_id(i2c_props->adap),
i2c_props->addr);
return 0 ;
}
return -ENODEV;
}
static int tda8295_probe(struct tuner_i2c_props *i2c_props)
{
#define TDA8295_ID 0 x8a
#define TDA8295C2_ID 0 x8b
u8 reg = 0 x2f, id;
struct i2c_msg msg_read[] = {
{ .addr = i2c_props->addr, .flags = 0 , .len = 1 , .buf = ® },
{ .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1 , .buf = &id },
};
/* detect tda8295 */
if (i2c_transfer(i2c_props->adap, msg_read, 2 ) != 2 ) {
printk(KERN_WARNING "%s: couldn't read register 0x%02x\n" ,
__func__, reg);
return -ENODEV;
}
if ((id & 0 xfe) == TDA8295_ID) {
if (debug)
printk(KERN_DEBUG "%s: %s detected @ %d-%04x\n" ,
__func__, (id == TDA8295_ID) ?
"tda8295c1" : "tda8295c2" ,
i2c_adapter_id(i2c_props->adap),
i2c_props->addr);
return 0 ;
}
return -ENODEV;
}
static const struct analog_demod_ops tda8290_ops = {
.set_params = tda8290_set_params,
.has_signal = tda8290_has_signal,
.standby = tda8290_standby,
.release = tda829x_release,
.i2c_gate_ctrl = tda8290_i2c_bridge,
};
static const struct analog_demod_ops tda8295_ops = {
.set_params = tda8295_set_params,
.has_signal = tda8295_has_signal,
.standby = tda8295_standby,
.release = tda829x_release,
.i2c_gate_ctrl = tda8295_i2c_bridge,
};
struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c_adap, u8 i2c_addr,
struct tda829x_config *cfg)
{
struct tda8290_priv *priv = NULL;
char *name;
priv = kzalloc(sizeof (struct tda8290_priv), GFP_KERNEL);
if (priv == NULL)
return NULL;
fe->analog_demod_priv = priv;
priv->i2c_props.addr = i2c_addr;
priv->i2c_props.adap = i2c_adap;
priv->i2c_props.name = "tda829x" ;
if (cfg) {
priv->cfg.config = cfg->lna_cfg;
priv->tda18271_std_map = cfg->tda18271_std_map;
}
if (tda8290_probe(&priv->i2c_props) == 0 ) {
priv->ver = TDA8290;
memcpy(&fe->ops.analog_ops, &tda8290_ops,
sizeof (struct analog_demod_ops));
}
if (tda8295_probe(&priv->i2c_props) == 0 ) {
priv->ver = TDA8295;
memcpy(&fe->ops.analog_ops, &tda8295_ops,
sizeof (struct analog_demod_ops));
}
if (cfg && cfg->no_i2c_gate)
fe->ops.analog_ops.i2c_gate_ctrl = NULL;
if (!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) {
tda8295_power(fe, 1 );
if (tda829x_find_tuner(fe) < 0 )
goto fail;
}
switch (priv->ver) {
case TDA8290:
name = "tda8290" ;
break ;
case TDA8295:
name = "tda8295" ;
break ;
case TDA8290 | TDA8275:
name = "tda8290+75" ;
break ;
case TDA8295 | TDA8275:
name = "tda8295+75" ;
break ;
case TDA8290 | TDA8275A:
name = "tda8290+75a" ;
break ;
case TDA8295 | TDA8275A:
name = "tda8295+75a" ;
break ;
case TDA8290 | TDA18271:
name = "tda8290+18271" ;
break ;
case TDA8295 | TDA18271:
name = "tda8295+18271" ;
break ;
default :
goto fail;
}
tuner_info("type set to %s\n" , name);
fe->ops.analog_ops.info.name = name;
if (priv->ver & TDA8290) {
if (priv->ver & (TDA8275 | TDA8275A))
tda8290_init_tuner(fe);
tda8290_init_if(fe);
} else if (priv->ver & TDA8295)
tda8295_init_if(fe);
return fe;
fail:
memset(&fe->ops.analog_ops, 0 , sizeof (struct analog_demod_ops));
tda829x_release(fe);
return NULL;
}
EXPORT_SYMBOL_GPL(tda829x_attach);
int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr)
{
struct tuner_i2c_props i2c_props = {
.adap = i2c_adap,
.addr = i2c_addr,
};
static unsigned char soft_reset[] = { 0 x00, 0 x00 };
static unsigned char easy_mode_b[] = { 0 x01, 0 x02 };
static unsigned char easy_mode_g[] = { 0 x01, 0 x04 };
static unsigned char restore_9886[] = { 0 x00, 0 xd6, 0 x30 };
static unsigned char addr_dto_lsb = 0 x07;
unsigned char data;
#define PROBE_BUFFER_SIZE 8
unsigned char buf[PROBE_BUFFER_SIZE];
int i;
/* rule out tda9887, which would return the same byte repeatedly */
tuner_i2c_xfer_send_recv(&i2c_props,
soft_reset, 1 , buf, PROBE_BUFFER_SIZE);
for (i = 1 ; i < PROBE_BUFFER_SIZE; i++) {
if (buf[i] != buf[0 ])
break ;
}
/* all bytes are equal, not a tda829x - probably a tda9887 */
if (i == PROBE_BUFFER_SIZE)
return -ENODEV;
if ((tda8290_probe(&i2c_props) == 0 ) ||
(tda8295_probe(&i2c_props) == 0 ))
return 0 ;
/* fall back to old probing method */
tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2 );
tuner_i2c_xfer_send(&i2c_props, soft_reset, 2 );
tuner_i2c_xfer_send_recv(&i2c_props, &addr_dto_lsb, 1 , &data, 1 );
if (data == 0 ) {
tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2 );
tuner_i2c_xfer_send(&i2c_props, soft_reset, 2 );
tuner_i2c_xfer_send_recv(&i2c_props,
&addr_dto_lsb, 1 , &data, 1 );
if (data == 0 x7b) {
return 0 ;
}
}
tuner_i2c_xfer_send(&i2c_props, restore_9886, 3 );
return -ENODEV;
}
EXPORT_SYMBOL_GPL(tda829x_probe);
MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver" );
MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky" );
MODULE_LICENSE("GPL" );
Messung V0.5 in Prozent C=96 H=97 G=96
¤ Dauer der Verarbeitung: 0.23 Sekunden
(vorverarbeitet am 2026-06-07)
¤
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