/*
i2c tv tuner chip device driver
controls the philips tda8290+75 tuner chip combo.
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 <linux/i2c.h>
#include <linux/videodev.h>
#include <linux/delay.h>
#include <media/tuner.h>
/* ---------------------------------------------------------------------- */
struct tda827x_data {
u32 lomax;
u8 spd;
u8 bs;
u8 bp;
u8 cp;
u8 gc3;
u8 div1p5;
};
/* Note lomax entry is lo / 62500 */
static struct tda827x_data tda827x_analog[] = {
{ .lomax = 992, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1}, /* 62 MHz */
{ .lomax = 1056, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1}, /* 66 MHz */
{ .lomax = 1216, .spd = 3, .bs = 1, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0}, /* 76 MHz */
{ .lomax = 1344, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0}, /* 84 MHz */
{ .lomax = 1488, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0}, /* 93 MHz */
{ .lomax = 1568, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0}, /* 98 MHz */
{ .lomax = 1744, .spd = 3, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0}, /* 109 MHz */
{ .lomax = 1968, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1}, /* 123 MHz */
{ .lomax = 2128, .spd = 2, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1}, /* 133 MHz */
{ .lomax = 2416, .spd = 2, .bs = 1, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0}, /* 151 MHz */
{ .lomax = 2464, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0}, /* 154 MHz */
{ .lomax = 2896, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 0, .div1p5 = 0}, /* 181 MHz */
{ .lomax = 2960, .spd = 2, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0}, /* 185 MHz */
{ .lomax = 3472, .spd = 2, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0}, /* 217 MHz */
{ .lomax = 3904, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1}, /* 244 MHz */
{ .lomax = 4240, .spd = 1, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1}, /* 265 MHz */
{ .lomax = 4832, .spd = 1, .bs = 1, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0}, /* 302 MHz */
{ .lomax = 5184, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0}, /* 324 MHz */
{ .lomax = 5920, .spd = 1, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0}, /* 370 MHz */
{ .lomax = 7264, .spd = 1, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0}, /* 454 MHz */
{ .lomax = 7888, .spd = 0, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1}, /* 493 MHz */
{ .lomax = 8480, .spd = 0, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1}, /* 530 MHz */
{ .lomax = 8864, .spd = 0, .bs = 1, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0}, /* 554 MHz */
{ .lomax = 9664, .spd = 0, .bs = 1, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0}, /* 604 MHz */
{ .lomax = 11088, .spd = 0, .bs = 2, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0}, /* 696 MHz */
{ .lomax = 11840, .spd = 0, .bs = 2, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0}, /* 740 MHz */
{ .lomax = 13120, .spd = 0, .bs = 3, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0}, /* 820 MHz */
{ .lomax = 13840, .spd = 0, .bs = 3, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0}, /* 865 MHz */
{ .lomax = 0, .spd = 0, .bs = 0, .bp = 0, .cp = 0, .gc3 = 0, .div1p5 = 0} /* End */
};
static void tda827x_tune(struct i2c_client *c, u16 ifc, unsigned int freq)
{
unsigned char tuner_reg[8];
unsigned char reg2[2];
u32 N;
int i;
struct tuner *t = i2c_get_clientdata(c);
struct i2c_msg msg = {.addr = t->tda827x_addr, .flags = 0};
if (t->mode == V4L2_TUNER_RADIO)
freq = freq / 1000;
N = freq + ifc;
i = 0;
while (tda827x_analog[i].lomax < N) {
if(tda827x_analog[i + 1].lomax == 0)
break;
i++;
}
N = N << tda827x_analog[i].spd;
tuner_reg[0] = 0;
tuner_reg[1] = (unsigned char)(N>>8);
tuner_reg[2] = (unsigned char) N;
tuner_reg[3] = 0x40;
tuner_reg[4] = 0x52 + (t->tda827x_lpsel << 5);
tuner_reg[5] = (tda827x_analog[i].spd << 6) + (tda827x_analog[i].div1p5 <<5) +
(tda827x_analog[i].bs <<3) + tda827x_analog[i].bp;
tuner_reg[6] = 0x8f + (tda827x_analog[i].gc3 << 4);
tuner_reg[7] = 0x8f;
msg.buf = tuner_reg;
msg.len = 8;
i2c_transfer(c->adapter, &msg, 1);
msg.buf= reg2;
msg.len = 2;
reg2[0] = 0x80;
reg2[1] = 0;
i2c_transfer(c->adapter, &msg, 1);
reg2[0] = 0x60;
reg2[1] = 0xbf;
i2c_transfer(c->adapter, &msg, 1);
reg2[0] = 0x30;
reg2[1] = tuner_reg[4] + 0x80;
i2c_transfer(c->adapter, &msg, 1);
msleep(1);
reg2[0] = 0x30;
reg2[1] = tuner_reg[4] + 4;
i2c_transfer(c->adapter, &msg, 1);
msleep(1);
reg2[0] = 0x30;
reg2[1] = tuner_reg[4];
i2c_transfer(c->adapter, &msg, 1);
msleep(550);
reg2[0] = 0x30;
reg2[1] = (tuner_reg[4] & 0xfc) + tda827x_analog[i].cp ;
i2c_transfer(c->adapter, &msg, 1);
reg2[0] = 0x60;
reg2[1] = 0x3f;
i2c_transfer(c->adapter, &msg, 1);
reg2[0] = 0x80;
reg2[1] = 0x08; // Vsync en
i2c_transfer(c->adapter, &msg, 1);
}
static void tda827x_agcf(struct i2c_client *c)
{
struct tuner *t = i2c_get_clientdata(c);
unsigned char data[] = {0x80, 0x0c};
struct i2c_msg msg = {.addr = t->tda827x_addr, .buf = data,
.flags = 0, .len = 2};
i2c_transfer(c->adapter, &msg, 1);
}
/* ---------------------------------------------------------------------- */
struct tda827xa_data {
u32 lomax;
u8 svco;
u8 spd;
u8 scr;
u8 sbs;
u8 gc3;
};
static struct tda827xa_data tda827xa_analog[] = {
{ .lomax = 910, .svco = 3, .spd = 4, .scr = 0, .sbs = 0, .gc3 = 3}, /* 56.875 MHz */
{ .lomax = 1076, .svco = 0, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3}, /* 67.25 MHz */
{ .lomax = 1300, .svco = 1, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3}, /* 81.25 MHz */
{ .lomax = 1560, .svco = 2, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3}, /* 97.5 MHz */
{ .lomax = 1820, .svco = 3, .spd = 3, .scr = 0, .sbs = 1, .gc3 = 1}, /* 113.75 MHz */
{ .lomax = 2152, .svco = 0, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1}, /* 134.5 MHz */
{ .lomax = 2464, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1}, /* 154 MHz */
{ .lomax = 2600, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1}, /* 162.5 MHz */
{ .lomax = 2928, .svco = 2, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1}, /* 183 MHz */
{ .lomax = 3120, .svco = 2, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1}, /* 195 MHz */
{ .lomax = 3640, .svco = 3, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 3}, /* 227.5 MHz */
{ .lomax = 4304, .svco = 0, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 3}, /* 269 MHz */
{ .lomax = 5200, .svco = 1, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1}, /* 325 MHz */
{ .lomax = 6240, .svco = 2, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 3}, /* 390 MHz */
{ .lomax = 7280, .svco = 3, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 3}, /* 455 MHz */
{ .lomax = 8320, .svco = 0, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1}, /* 520 MHz */
{ .lomax = 8608, .svco = 0, .spd = 0, .scr = 1, .sbs = 3, .gc3 = 1}, /* 538 MHz */
{ .lomax = 8864, .svco = 1, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1}, /* 554 MHz */
{ .lomax = 9920, .svco = 1, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0}, /* 620 MHz */
{ .lomax = 10400, .svco = 1, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0}, /* 650 MHz */
{ .lomax = 11200, .svco = 2, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0}, /* 700 MHz */
{ .lomax = 12480, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0}, /* 780 MHz */
{ .lomax = 13120, .svco = 3, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0}, /* 820 MHz */
{ .lomax = 13920, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0}, /* 870 MHz */
{ .lomax = 14576, .svco = 3, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 0}, /* 911 MHz */
{ .lomax = 0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0} /* End */
};
static void tda827xa_tune(struct i2c_client *c, u16 ifc, unsigned int freq)
{
unsigned char tuner_reg[14];
unsigned char reg2[2];
u32 N;
int i;
struct tuner *t = i2c_get_clientdata(c);
struct i2c_msg msg = {.addr = t->tda827x_addr, .flags = 0};
if (t->mode == V4L2_TUNER_RADIO)
freq = freq / 1000;
N = freq + ifc;
i = 0;
while (tda827xa_analog[i].lomax < N) {
if(tda827xa_analog[i + 1].lomax == 0)
break;
i++;
}
N = N << tda827xa_analog[i].spd;
tuner_reg[0] = 0;
tuner_reg[1] = (unsigned char)(N>>8);
tuner_reg[2] = (unsigned char) N;
tuner_reg[3] = 0;
tuner_reg[4] = 0x16;
tuner_reg[5] = (tda827xa_analog[i].spd << 5) + (tda827xa_analog[i].svco << 3) +
tda827xa_analog[i].sbs;
tuner_reg[6] = 0x8b + (tda827xa_analog[i].gc3 << 4);
tuner_reg[7] = 0x0c;
tuner_reg[8] = 4;
tuner_reg[9] = 0x20;
tuner_reg[10] = 0xff;
tuner_reg[11] = 0xe0;
tuner_reg[12] = 0;
tuner_reg[13] = 0x39 + (t->tda827x_lpsel << 1);
msg.buf = tuner_reg;
msg.len = 14;
i2c_transfer(c->adapter, &msg, 1);
msg.buf= reg2;
msg.len = 2;
reg2[0] = 0x60;
reg2[1] = 0x3c;
i2c_transfer(c->adapter, &msg, 1);
reg2[0] = 0xa0;
reg2[1] = 0xc0;
i2c_transfer(c->adapter, &msg, 1);
msleep(2);
reg2[0] = 0x30;
reg2[1] = 0x10 + tda827xa_analog[i].scr;
i2c_transfer(c->adapter, &msg, 1);
msleep(550);
reg2[0] = 0x50;
reg2[1] = 0x8f + (tda827xa_analog[i].gc3 << 4);
i2c_transfer(c->adapter, &msg, 1);
reg2[0] = 0x80;
reg2[1] = 0x28;
i2c_transfer(c->adapter, &msg, 1);
reg2[0] = 0xb0;
reg2[1] = 0x01;
i2c_transfer(c->adapter, &msg, 1);
reg2[0] = 0xc0;
reg2[1] = 0x19 + (t->tda827x_lpsel << 1);
i2c_transfer(c->adapter, &msg, 1);
}
static void tda827xa_agcf(struct i2c_client *c)
{
struct tuner *t = i2c_get_clientdata(c);
unsigned char data[] = {0x80, 0x2c};
struct i2c_msg msg = {.addr = t->tda827x_addr, .buf = data,
.flags = 0, .len = 2};
i2c_transfer(c->adapter, &msg, 1);
}
/*---------------------------------------------------------------------*/
static void tda8290_i2c_bridge(struct i2c_client *c, int close)
{
unsigned char enable[2] = { 0x21, 0xC0 };
unsigned char disable[2] = { 0x21, 0x80 };
unsigned char *msg;
if(close) {
msg = enable;
i2c_master_send(c, msg, 2);
/* let the bridge stabilize */
msleep(20);
} else {
msg = disable;
i2c_master_send(c, msg, 2);
}
}
/*---------------------------------------------------------------------*/
static int tda8290_tune(struct i2c_client *c, u16 ifc, unsigned int freq)
{
struct tuner *t = i2c_get_clientdata(c);
unsigned char soft_reset[] = { 0x00, 0x00 };
unsigned char easy_mode[] = { 0x01, t->tda8290_easy_mode };
unsigned char expert_mode[] = { 0x01, 0x80 };
unsigned char gainset_off[] = { 0x28, 0x14 };
unsigned char if_agc_spd[] = { 0x0f, 0x88 };
unsigned char adc_head_6[] = { 0x05, 0x04 };
unsigned char adc_head_9[] = { 0x05, 0x02 };
unsigned char adc_head_12[] = { 0x05, 0x01 };
unsigned char pll_bw_nom[] = { 0x0d, 0x47 };
unsigned char pll_bw_low[] = { 0x0d, 0x27 };
unsigned char gainset_2[] = { 0x28, 0x64 };
unsigned char agc_rst_on[] = { 0x0e, 0x0b };
unsigned char agc_rst_off[] = { 0x0e, 0x09 };
unsigned char if_agc_set[] = { 0x0f, 0x81 };
unsigned char addr_adc_sat = 0x1a;
unsigned char addr_agc_stat = 0x1d;
unsigned char addr_pll_stat = 0x1b;
unsigned char adc_sat, agc_stat,
pll_stat;
i2c_master_send(c, easy_mode, 2);
i2c_master_send(c, soft_reset, 2);
msleep(1);
expert_mode[1] = t->tda8290_easy_mode + 0x80;
i2c_master_send(c, expert_mode, 2);
i2c_master_send(c, gainset_off, 2);
i2c_master_send(c, if_agc_spd, 2);
if (t->tda8290_easy_mode & 0x60)
i2c_master_send(c, adc_head_9, 2);
else
i2c_master_send(c, adc_head_6, 2);
i2c_master_send(c, pll_bw_nom, 2);
tda8290_i2c_bridge(c, 1);
if (t->tda827x_ver != 0)
tda827xa_tune(c, ifc, freq);
else
tda827x_tune(c, ifc, freq);
/* adjust headroom resp. gain */
i2c_master_send(c, &addr_adc_sat, 1);
i2c_master_recv(c, &adc_sat, 1);
i2c_master_send(c, &addr_agc_stat, 1);
i2c_master_recv(c, &agc_stat, 1);
i2c_master_send(c, &addr_pll_stat, 1);
i2c_master_recv(c, &pll_stat, 1);
if (pll_stat & 0x80)
tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat);
else
tuner_dbg("tda8290 not locked, no signal?\n");
if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) {
tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n",
agc_stat, adc_sat, pll_stat & 0x80);
i2c_master_send(c, gainset_2, 2);
msleep(100);
i2c_master_send(c, &addr_agc_stat, 1);
i2c_master_recv(c, &agc_stat, 1);
i2c_master_send(c, &addr_pll_stat, 1);
i2c_master_recv(c, &pll_stat, 1);
if ((agc_stat > 115) || !(pll_stat & 0x80)) {
tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n",
agc_stat, pll_stat & 0x80);
if (t->tda827x_ver != 0)
tda827xa_agcf(c);
else
tda827x_agcf(c);
msleep(100);
i2c_master_send(c, &addr_agc_stat, 1);
i2c_master_recv(c, &agc_stat, 1);
i2c_master_send(c, &addr_pll_stat, 1);
i2c_master_recv(c, &pll_stat, 1);
if((agc_stat > 115) || !(pll_stat & 0x80)) {
tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat);
i2c_master_send(c, adc_head_12, 2);
i2c_master_send(c, pll_bw_low, 2);
msleep(100);
}
}
}
/* l/ l' deadlock? */
if(t->tda8290_easy_mode & 0x60) {
i2c_master_send(c, &addr_adc_sat, 1);
i2c_master_recv(c, &adc_sat, 1);
i2c_master_send(c, &addr_pll_stat, 1);
i2c_master_recv(c, &pll_stat, 1);
if ((adc_sat > 20) || !(pll_stat & 0x80)) {
tuner_dbg("trying to resolve SECAM L deadlock\n");
i2c_master_send(c, agc_rst_on, 2);
msleep(40);
i2c_master_send(c, agc_rst_off, 2);
}
}
tda8290_i2c_bridge(c, 0);
i2c_master_send(c, if_agc_set, 2);
return 0;
}
/*---------------------------------------------------------------------*/
static void set_audio(struct tuner *t)
{
char* mode;
t->tda827x_lpsel = 0;
mode = "xx";
if (t->std & V4L2_STD_MN) {
t->sgIF = 92;
t->tda8290_easy_mode = 0x01;
t->tda827x_lpsel = 1;
mode = "MN";
} else if (t->std & V4L2_STD_B) {
t->sgIF = 108;
t->tda8290_easy_mode = 0x02;
mode = "B";
} else if (t->std & V4L2_STD_GH) {
t->sgIF = 124;
t->tda8290_easy_mode = 0x04;
mode = "GH";
} else if (t->std & V4L2_STD_PAL_I) {
t->sgIF = 124;
t->tda8290_easy_mode = 0x08;
mode = "I";
} else if (t->std & V4L2_STD_DK) {
t->sgIF = 124;
t->tda8290_easy_mode = 0x10;
mode = "DK";
} else if (t->std & V4L2_STD_SECAM_L) {
t->sgIF = 124;
t->tda8290_easy_mode = 0x20;
mode = "L";
} else if (t->std & V4L2_STD_SECAM_LC) {
t->sgIF = 20;
t->tda8290_easy_mode = 0x40;
mode = "LC";
}
tuner_dbg("setting tda8290 to system %s\n", mode);
}
static void set_tv_freq(struct i2c_client *c, unsigned int freq)
{
struct tuner *t = i2c_get_clientdata(c);
set_audio(t);
tda8290_tune(c, t->sgIF, freq);
}
static void set_radio_freq(struct i2c_client *c, unsigned int freq)
{
/* if frequency is 5.5 MHz */
tda8290_tune(c, 88, freq);
}
static int has_signal(struct i2c_client *c)
{
unsigned char i2c_get_afc[1] = { 0x1B };
unsigned char afc = 0;
i2c_master_send(c, i2c_get_afc, ARRAY_SIZE(i2c_get_afc));
i2c_master_recv(c, &afc, 1);
return (afc & 0x80)? 65535:0;
}
/*---------------------------------------------------------------------*/
static void standby(struct i2c_client *c)
{
struct tuner *t = i2c_get_clientdata(c);
unsigned char cb1[] = { 0x30, 0xD0 };
unsigned char tda8290_standby[] = { 0x00, 0x02 };
struct i2c_msg msg = {.addr = t->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
tda8290_i2c_bridge(c, 1);
if (t->tda827x_ver != 0)
cb1[1] = 0x90;
i2c_transfer(c->adapter, &msg, 1);
tda8290_i2c_bridge(c, 0);
i2c_master_send(c, tda8290_standby, 2);
}
static void tda8290_init_if(struct i2c_client *c)
{
unsigned char set_VS[] = { 0x30, 0x6F };
unsigned char set_GP01_CF[] = { 0x20, 0x0B };
i2c_master_send(c, set_VS, 2);
i2c_master_send(c, set_GP01_CF, 2);
}
static void tda8290_init_tuner(struct i2c_client *c)
{
struct tuner *t = i2c_get_clientdata(c);
unsigned char tda8275_init[] = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
struct i2c_msg msg = {.addr = t->tda827x_addr, .flags=0,
.buf=tda8275_init, .len = 14};
if (t->tda827x_ver != 0)
msg.buf = tda8275a_init;
tda8290_i2c_bridge(c, 1);
i2c_transfer(c->adapter, &msg, 1);
tda8290_i2c_bridge(c, 0);
}
/*---------------------------------------------------------------------*/
int tda8290_init(struct i2c_client *c)
{
struct tuner *t = i2c_get_clientdata(c);
u8 data;
int i, ret, tuners_found;
u32 tuner_addrs;
struct i2c_msg msg = {.flags=I2C_M_RD, .buf=&data, .len = 1};
tda8290_i2c_bridge(c, 1);
/* probe for tuner chip */
tuners_found = 0;
tuner_addrs = 0;
for (i=0x60; i<= 0x63; i++) {
msg.addr = i;
ret = i2c_transfer(c->adapter, &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
*/
tda8290_i2c_bridge(c, 0);
if(tuners_found > 1)
for (i = 0; i < tuners_found; i++) {
msg.addr = tuner_addrs & 0xff;
ret = i2c_transfer(c->adapter, &msg, 1);
if(ret == 1)
tuner_addrs = tuner_addrs >> 8;
else
break;
}
if (tuner_addrs == 0) {
tuner_addrs = 0x61;
tuner_info ("could not clearly identify tuner address, defaulting to %x\n",
tuner_addrs);
} else {
tuner_addrs = tuner_addrs & 0xff;
tuner_info ("setting tuner address to %x\n", tuner_addrs);
}
t->tda827x_addr = tuner_addrs;
msg.addr = tuner_addrs;
tda8290_i2c_bridge(c, 1);
ret = i2c_transfer(c->adapter, &msg, 1);
if( ret != 1)
tuner_warn ("TDA827x access failed!\n");
if ((data & 0x3c) == 0) {
strlcpy(c->name, "tda8290+75", sizeof(c->name));
t->tda827x_ver = 0;
} else {
strlcpy(c->name, "tda8290+75a", sizeof(c->name));
t->tda827x_ver = 2;
}
tuner_info("tuner: type set to %s\n", c->name);
t->set_tv_freq = set_tv_freq;
t->set_radio_freq = set_radio_freq;
t->has_signal = has_signal;
t->standby = standby;
t->tda827x_lpsel = 0;
tda8290_init_tuner(c);
tda8290_init_if(c);
return 0;
}
int tda8290_probe(struct i2c_client *c)
{
unsigned char soft_reset[] = { 0x00, 0x00 };
unsigned char easy_mode_b[] = { 0x01, 0x02 };
unsigned char easy_mode_g[] = { 0x01, 0x04 };
unsigned char addr_dto_lsb = 0x07;
unsigned char data;
i2c_master_send(c, easy_mode_b, 2);
i2c_master_send(c, soft_reset, 2);
i2c_master_send(c, &addr_dto_lsb, 1);
i2c_master_recv(c, &data, 1);
if (data == 0) {
i2c_master_send(c, easy_mode_g, 2);
i2c_master_send(c, soft_reset, 2);
i2c_master_send(c, &addr_dto_lsb, 1);
i2c_master_recv(c, &data, 1);
if (data == 0x7b) {
return 0;
}
}
return -1;
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* ---------------------------------------------------------------------------
* Local variables:
* c-basic-offset: 8
* End:
*/
