| /* |
| |
| 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_lna_gain(struct i2c_client *c, int high) |
| { |
| struct tuner *t = i2c_get_clientdata(c); |
| unsigned char buf[] = {0x22, 0x01}; |
| int arg; |
| struct i2c_msg msg = {.addr = c->addr, .flags = 0, .buf = buf, .len = sizeof(buf)}; |
| if (t->config) { |
| if (high) |
| tuner_dbg("setting LNA to high gain\n"); |
| else |
| tuner_dbg("setting LNA to low gain\n"); |
| } |
| switch (t->config) { |
| case 0: /* no LNA */ |
| break; |
| case 1: /* switch is GPIO 0 of tda8290 */ |
| case 2: |
| /* turn Vsync on */ |
| if (t->std & V4L2_STD_MN) |
| arg = 5; |
| else |
| arg = 4; |
| if (t->gpio_func) |
| t->gpio_func(c->adapter->algo_data, 22, 5); |
| buf[1] = high ? 0 : 1; |
| if (t->config == 2) |
| buf[1] = high ? 1 : 0; |
| i2c_transfer(c->adapter, &msg, 1); |
| break; |
| case 3: /* switch with GPIO of saa713x */ |
| if (t->gpio_func) |
| t->gpio_func(c->adapter->algo_data, 22, high); |
| break; |
| } |
| } |
| |
| static void tda827xa_tune(struct i2c_client *c, u16 ifc, unsigned int freq) |
| { |
| unsigned char tuner_reg[11]; |
| u32 N; |
| int i; |
| struct tuner *t = i2c_get_clientdata(c); |
| struct i2c_msg msg = {.addr = t->tda827x_addr, .flags = 0, .buf = tuner_reg}; |
| |
| tda827xa_lna_gain( c, 1); |
| msleep(10); |
| |
| 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] = 0x1c; |
| tuner_reg[8] = 4; |
| tuner_reg[9] = 0x20; |
| tuner_reg[10] = 0x00; |
| msg.len = 11; |
| i2c_transfer(c->adapter, &msg, 1); |
| |
| tuner_reg[0] = 0x90; |
| tuner_reg[1] = 0xff; |
| tuner_reg[2] = 0xe0; |
| tuner_reg[3] = 0; |
| tuner_reg[4] = 0x99 + (t->tda827x_lpsel << 1); |
| msg.len = 5; |
| i2c_transfer(c->adapter, &msg, 1); |
| |
| tuner_reg[0] = 0xa0; |
| tuner_reg[1] = 0xc0; |
| msg.len = 2; |
| i2c_transfer(c->adapter, &msg, 1); |
| |
| tuner_reg[0] = 0x30; |
| tuner_reg[1] = 0x10 + tda827xa_analog[i].scr; |
| i2c_transfer(c->adapter, &msg, 1); |
| |
| msg.flags = I2C_M_RD; |
| i2c_transfer(c->adapter, &msg, 1); |
| msg.flags = 0; |
| tuner_reg[1] >>= 4; |
| tuner_dbg("AGC2 gain is: %d\n", tuner_reg[1]); |
| if (tuner_reg[1] < 1) |
| tda827xa_lna_gain( c, 0); |
| |
| msleep(100); |
| tuner_reg[0] = 0x60; |
| tuner_reg[1] = 0x3c; |
| i2c_transfer(c->adapter, &msg, 1); |
| |
| msleep(163); |
| tuner_reg[0] = 0x50; |
| tuner_reg[1] = 0x8f + (tda827xa_analog[i].gc3 << 4); |
| i2c_transfer(c->adapter, &msg, 1); |
| |
| tuner_reg[0] = 0x80; |
| tuner_reg[1] = 0x28; |
| i2c_transfer(c->adapter, &msg, 1); |
| |
| tuner_reg[0] = 0xb0; |
| tuner_reg[1] = 0x01; |
| i2c_transfer(c->adapter, &msg, 1); |
| |
| tuner_reg[0] = 0xc0; |
| tuner_reg[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; |
| int i; |
| |
| tuner_dbg("tda827xa config is 0x%02x\n", t->config); |
| 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); |
| for (i = 0; i < 3; i++) { |
| i2c_master_send(c, &addr_pll_stat, 1); |
| i2c_master_recv(c, &pll_stat, 1); |
| if (pll_stat & 0x80) { |
| 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); |
| 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 & 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) |
| { |
| struct tuner *t = i2c_get_clientdata(c); |
| unsigned char set_VS[] = { 0x30, 0x6F }; |
| unsigned char set_GP00_CF[] = { 0x20, 0x01 }; |
| unsigned char set_GP01_CF[] = { 0x20, 0x0B }; |
| |
| if ((t->config == 1) || (t->config == 2)) |
| i2c_master_send(c, set_GP00_CF, 2); |
| else |
| i2c_master_send(c, set_GP01_CF, 2); |
| i2c_master_send(c, set_VS, 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: |
| */ |