q3k/linux
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
linux/drivers/media/video/tda8290.c
Hartmut Hackmann 44fd06fa90 V4L/DVB (3378): Restore power on defaults of tda9887 after tda8290 probe 
The probing code for tda8290 changes the state of the tda9887 GP ports.
The patch assumes that if probing for tda8290 failed, this must be a 
tda9887 and restores its power on defaults.
This should solve the module load order issue with some pinnacle cards.

Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-02-27 00:09:11 -03:00

617 lines
19 KiB
C
Raw Blame History

/*
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, 0x00 };
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 agc_out_on[] = { 0x02, 0x00 };
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, agc_out_on, 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 };
unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
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_agc_tri, 2);
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("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 restore_9886[] = { 0x00, 0xd6, 0x30 };
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;
}
}
i2c_master_send(c, restore_9886, 3);
return -1;
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* ---------------------------------------------------------------------------
* Local variables:
* c-basic-offset: 8
* End:
*/
Reference in a new issue View git blame Copy permalink