linux/drivers/media/tuners/tda827x.c
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   1/*
   2 *
   3 * (c) 2005 Hartmut Hackmann
   4 * (c) 2007 Michael Krufky
   5 *
   6 *  This program is free software; you can redistribute it and/or modify
   7 *  it under the terms of the GNU General Public License as published by
   8 *  the Free Software Foundation; either version 2 of the License, or
   9 *  (at your option) any later version.
  10 *
  11 *  This program is distributed in the hope that it will be useful,
  12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 *  GNU General Public License for more details.
  15 *
  16 *  You should have received a copy of the GNU General Public License
  17 *  along with this program; if not, write to the Free Software
  18 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21#include <linux/module.h>
  22#include <linux/slab.h>
  23#include <asm/types.h>
  24#include <linux/dvb/frontend.h>
  25#include <linux/videodev2.h>
  26
  27#include "tda827x.h"
  28
  29static int debug;
  30module_param(debug, int, 0644);
  31MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
  32
  33#define dprintk(args...) \
  34        do {                                        \
  35                if (debug) printk(KERN_DEBUG "tda827x: " args); \
  36        } while (0)
  37
  38struct tda827x_priv {
  39        int i2c_addr;
  40        struct i2c_adapter *i2c_adap;
  41        struct tda827x_config *cfg;
  42
  43        unsigned int sgIF;
  44        unsigned char lpsel;
  45
  46        u32 frequency;
  47        u32 bandwidth;
  48};
  49
  50static void tda827x_set_std(struct dvb_frontend *fe,
  51                            struct analog_parameters *params)
  52{
  53        struct tda827x_priv *priv = fe->tuner_priv;
  54        char *mode;
  55
  56        priv->lpsel = 0;
  57        if (params->std & V4L2_STD_MN) {
  58                priv->sgIF = 92;
  59                priv->lpsel = 1;
  60                mode = "MN";
  61        } else if (params->std & V4L2_STD_B) {
  62                priv->sgIF = 108;
  63                mode = "B";
  64        } else if (params->std & V4L2_STD_GH) {
  65                priv->sgIF = 124;
  66                mode = "GH";
  67        } else if (params->std & V4L2_STD_PAL_I) {
  68                priv->sgIF = 124;
  69                mode = "I";
  70        } else if (params->std & V4L2_STD_DK) {
  71                priv->sgIF = 124;
  72                mode = "DK";
  73        } else if (params->std & V4L2_STD_SECAM_L) {
  74                priv->sgIF = 124;
  75                mode = "L";
  76        } else if (params->std & V4L2_STD_SECAM_LC) {
  77                priv->sgIF = 20;
  78                mode = "LC";
  79        } else {
  80                priv->sgIF = 124;
  81                mode = "xx";
  82        }
  83
  84        if (params->mode == V4L2_TUNER_RADIO) {
  85                priv->sgIF = 88; /* if frequency is 5.5 MHz */
  86                dprintk("setting tda827x to radio FM\n");
  87        } else
  88                dprintk("setting tda827x to system %s\n", mode);
  89}
  90
  91
  92/* ------------------------------------------------------------------ */
  93
  94struct tda827x_data {
  95        u32 lomax;
  96        u8  spd;
  97        u8  bs;
  98        u8  bp;
  99        u8  cp;
 100        u8  gc3;
 101        u8 div1p5;
 102};
 103
 104static const struct tda827x_data tda827x_table[] = {
 105        { .lomax =  62000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1},
 106        { .lomax =  66000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1},
 107        { .lomax =  76000000, .spd = 3, .bs = 1, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0},
 108        { .lomax =  84000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0},
 109        { .lomax =  93000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0},
 110        { .lomax =  98000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0},
 111        { .lomax = 109000000, .spd = 3, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
 112        { .lomax = 123000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1},
 113        { .lomax = 133000000, .spd = 2, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1},
 114        { .lomax = 151000000, .spd = 2, .bs = 1, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
 115        { .lomax = 154000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
 116        { .lomax = 181000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 0, .div1p5 = 0},
 117        { .lomax = 185000000, .spd = 2, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
 118        { .lomax = 217000000, .spd = 2, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
 119        { .lomax = 244000000, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1},
 120        { .lomax = 265000000, .spd = 1, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1},
 121        { .lomax = 302000000, .spd = 1, .bs = 1, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
 122        { .lomax = 324000000, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
 123        { .lomax = 370000000, .spd = 1, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
 124        { .lomax = 454000000, .spd = 1, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
 125        { .lomax = 493000000, .spd = 0, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1},
 126        { .lomax = 530000000, .spd = 0, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1},
 127        { .lomax = 554000000, .spd = 0, .bs = 1, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
 128        { .lomax = 604000000, .spd = 0, .bs = 1, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
 129        { .lomax = 696000000, .spd = 0, .bs = 2, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
 130        { .lomax = 740000000, .spd = 0, .bs = 2, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0},
 131        { .lomax = 820000000, .spd = 0, .bs = 3, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
 132        { .lomax = 865000000, .spd = 0, .bs = 3, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0},
 133        { .lomax =         0, .spd = 0, .bs = 0, .bp = 0, .cp = 0, .gc3 = 0, .div1p5 = 0}
 134};
 135
 136static int tuner_transfer(struct dvb_frontend *fe,
 137                          struct i2c_msg *msg,
 138                          const int size)
 139{
 140        int rc;
 141        struct tda827x_priv *priv = fe->tuner_priv;
 142
 143        if (fe->ops.i2c_gate_ctrl)
 144                fe->ops.i2c_gate_ctrl(fe, 1);
 145        rc = i2c_transfer(priv->i2c_adap, msg, size);
 146        if (fe->ops.i2c_gate_ctrl)
 147                fe->ops.i2c_gate_ctrl(fe, 0);
 148
 149        if (rc >= 0 && rc != size)
 150                return -EIO;
 151
 152        return rc;
 153}
 154
 155static int tda827xo_set_params(struct dvb_frontend *fe)
 156{
 157        struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 158        struct tda827x_priv *priv = fe->tuner_priv;
 159        u8 buf[14];
 160        int rc;
 161
 162        struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
 163                               .buf = buf, .len = sizeof(buf) };
 164        int i, tuner_freq, if_freq;
 165        u32 N;
 166
 167        dprintk("%s:\n", __func__);
 168        if (c->bandwidth_hz == 0) {
 169                if_freq = 5000000;
 170        } else if (c->bandwidth_hz <= 6000000) {
 171                if_freq = 4000000;
 172        } else if (c->bandwidth_hz <= 7000000) {
 173                if_freq = 4500000;
 174        } else {        /* 8 MHz */
 175                if_freq = 5000000;
 176        }
 177        tuner_freq = c->frequency;
 178
 179        i = 0;
 180        while (tda827x_table[i].lomax < tuner_freq) {
 181                if (tda827x_table[i + 1].lomax == 0)
 182                        break;
 183                i++;
 184        }
 185
 186        tuner_freq += if_freq;
 187
 188        N = ((tuner_freq + 125000) / 250000) << (tda827x_table[i].spd + 2);
 189        buf[0] = 0;
 190        buf[1] = (N>>8) | 0x40;
 191        buf[2] = N & 0xff;
 192        buf[3] = 0;
 193        buf[4] = 0x52;
 194        buf[5] = (tda827x_table[i].spd << 6) + (tda827x_table[i].div1p5 << 5) +
 195                                (tda827x_table[i].bs << 3) +
 196                                tda827x_table[i].bp;
 197        buf[6] = (tda827x_table[i].gc3 << 4) + 0x8f;
 198        buf[7] = 0xbf;
 199        buf[8] = 0x2a;
 200        buf[9] = 0x05;
 201        buf[10] = 0xff;
 202        buf[11] = 0x00;
 203        buf[12] = 0x00;
 204        buf[13] = 0x40;
 205
 206        msg.len = 14;
 207        rc = tuner_transfer(fe, &msg, 1);
 208        if (rc < 0)
 209                goto err;
 210
 211        msleep(500);
 212        /* correct CP value */
 213        buf[0] = 0x30;
 214        buf[1] = 0x50 + tda827x_table[i].cp;
 215        msg.len = 2;
 216
 217        rc = tuner_transfer(fe, &msg, 1);
 218        if (rc < 0)
 219                goto err;
 220
 221        priv->frequency = c->frequency;
 222        priv->bandwidth = c->bandwidth_hz;
 223
 224        return 0;
 225
 226err:
 227        printk(KERN_ERR "%s: could not write to tuner at addr: 0x%02x\n",
 228               __func__, priv->i2c_addr << 1);
 229        return rc;
 230}
 231
 232static int tda827xo_sleep(struct dvb_frontend *fe)
 233{
 234        struct tda827x_priv *priv = fe->tuner_priv;
 235        static u8 buf[] = { 0x30, 0xd0 };
 236        struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
 237                               .buf = buf, .len = sizeof(buf) };
 238
 239        dprintk("%s:\n", __func__);
 240        tuner_transfer(fe, &msg, 1);
 241
 242        if (priv->cfg && priv->cfg->sleep)
 243                priv->cfg->sleep(fe);
 244
 245        return 0;
 246}
 247
 248/* ------------------------------------------------------------------ */
 249
 250static int tda827xo_set_analog_params(struct dvb_frontend *fe,
 251                                      struct analog_parameters *params)
 252{
 253        unsigned char tuner_reg[8];
 254        unsigned char reg2[2];
 255        u32 N;
 256        int i;
 257        struct tda827x_priv *priv = fe->tuner_priv;
 258        struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0 };
 259        unsigned int freq = params->frequency;
 260
 261        tda827x_set_std(fe, params);
 262
 263        if (params->mode == V4L2_TUNER_RADIO)
 264                freq = freq / 1000;
 265
 266        N = freq + priv->sgIF;
 267
 268        i = 0;
 269        while (tda827x_table[i].lomax < N * 62500) {
 270                if (tda827x_table[i + 1].lomax == 0)
 271                        break;
 272                i++;
 273        }
 274
 275        N = N << tda827x_table[i].spd;
 276
 277        tuner_reg[0] = 0;
 278        tuner_reg[1] = (unsigned char)(N>>8);
 279        tuner_reg[2] = (unsigned char) N;
 280        tuner_reg[3] = 0x40;
 281        tuner_reg[4] = 0x52 + (priv->lpsel << 5);
 282        tuner_reg[5] = (tda827x_table[i].spd    << 6) +
 283                       (tda827x_table[i].div1p5 << 5) +
 284                       (tda827x_table[i].bs     << 3) + tda827x_table[i].bp;
 285        tuner_reg[6] = 0x8f + (tda827x_table[i].gc3 << 4);
 286        tuner_reg[7] = 0x8f;
 287
 288        msg.buf = tuner_reg;
 289        msg.len = 8;
 290        tuner_transfer(fe, &msg, 1);
 291
 292        msg.buf = reg2;
 293        msg.len = 2;
 294        reg2[0] = 0x80;
 295        reg2[1] = 0;
 296        tuner_transfer(fe, &msg, 1);
 297
 298        reg2[0] = 0x60;
 299        reg2[1] = 0xbf;
 300        tuner_transfer(fe, &msg, 1);
 301
 302        reg2[0] = 0x30;
 303        reg2[1] = tuner_reg[4] + 0x80;
 304        tuner_transfer(fe, &msg, 1);
 305
 306        msleep(1);
 307        reg2[0] = 0x30;
 308        reg2[1] = tuner_reg[4] + 4;
 309        tuner_transfer(fe, &msg, 1);
 310
 311        msleep(1);
 312        reg2[0] = 0x30;
 313        reg2[1] = tuner_reg[4];
 314        tuner_transfer(fe, &msg, 1);
 315
 316        msleep(550);
 317        reg2[0] = 0x30;
 318        reg2[1] = (tuner_reg[4] & 0xfc) + tda827x_table[i].cp;
 319        tuner_transfer(fe, &msg, 1);
 320
 321        reg2[0] = 0x60;
 322        reg2[1] = 0x3f;
 323        tuner_transfer(fe, &msg, 1);
 324
 325        reg2[0] = 0x80;
 326        reg2[1] = 0x08;   /* Vsync en */
 327        tuner_transfer(fe, &msg, 1);
 328
 329        priv->frequency = params->frequency;
 330
 331        return 0;
 332}
 333
 334static void tda827xo_agcf(struct dvb_frontend *fe)
 335{
 336        struct tda827x_priv *priv = fe->tuner_priv;
 337        unsigned char data[] = { 0x80, 0x0c };
 338        struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
 339                               .buf = data, .len = 2};
 340
 341        tuner_transfer(fe, &msg, 1);
 342}
 343
 344/* ------------------------------------------------------------------ */
 345
 346struct tda827xa_data {
 347        u32 lomax;
 348        u8  svco;
 349        u8  spd;
 350        u8  scr;
 351        u8  sbs;
 352        u8  gc3;
 353};
 354
 355static struct tda827xa_data tda827xa_dvbt[] = {
 356        { .lomax =  56875000, .svco = 3, .spd = 4, .scr = 0, .sbs = 0, .gc3 = 1},
 357        { .lomax =  67250000, .svco = 0, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
 358        { .lomax =  81250000, .svco = 1, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
 359        { .lomax =  97500000, .svco = 2, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
 360        { .lomax = 113750000, .svco = 3, .spd = 3, .scr = 0, .sbs = 1, .gc3 = 1},
 361        { .lomax = 134500000, .svco = 0, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
 362        { .lomax = 154000000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
 363        { .lomax = 162500000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
 364        { .lomax = 183000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
 365        { .lomax = 195000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},
 366        { .lomax = 227500000, .svco = 3, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},
 367        { .lomax = 269000000, .svco = 0, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},
 368        { .lomax = 290000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},
 369        { .lomax = 325000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
 370        { .lomax = 390000000, .svco = 2, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
 371        { .lomax = 455000000, .svco = 3, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
 372        { .lomax = 520000000, .svco = 0, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
 373        { .lomax = 538000000, .svco = 0, .spd = 0, .scr = 1, .sbs = 3, .gc3 = 1},
 374        { .lomax = 550000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
 375        { .lomax = 620000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
 376        { .lomax = 650000000, .svco = 1, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
 377        { .lomax = 700000000, .svco = 2, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
 378        { .lomax = 780000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
 379        { .lomax = 820000000, .svco = 3, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
 380        { .lomax = 870000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
 381        { .lomax = 911000000, .svco = 3, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 0},
 382        { .lomax =         0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0}
 383};
 384
 385static struct tda827xa_data tda827xa_dvbc[] = {
 386        { .lomax =  50125000, .svco = 2, .spd = 4, .scr = 2, .sbs = 0, .gc3 = 3},
 387        { .lomax =  58500000, .svco = 3, .spd = 4, .scr = 2, .sbs = 0, .gc3 = 3},
 388        { .lomax =  69250000, .svco = 0, .spd = 3, .scr = 2, .sbs = 0, .gc3 = 3},
 389        { .lomax =  83625000, .svco = 1, .spd = 3, .scr = 2, .sbs = 0, .gc3 = 3},
 390        { .lomax =  97500000, .svco = 2, .spd = 3, .scr = 2, .sbs = 0, .gc3 = 3},
 391        { .lomax = 100250000, .svco = 2, .spd = 3, .scr = 2, .sbs = 1, .gc3 = 1},
 392        { .lomax = 117000000, .svco = 3, .spd = 3, .scr = 2, .sbs = 1, .gc3 = 1},
 393        { .lomax = 138500000, .svco = 0, .spd = 2, .scr = 2, .sbs = 1, .gc3 = 1},
 394        { .lomax = 167250000, .svco = 1, .spd = 2, .scr = 2, .sbs = 1, .gc3 = 1},
 395        { .lomax = 187000000, .svco = 2, .spd = 2, .scr = 2, .sbs = 1, .gc3 = 1},
 396        { .lomax = 200500000, .svco = 2, .spd = 2, .scr = 2, .sbs = 2, .gc3 = 1},
 397        { .lomax = 234000000, .svco = 3, .spd = 2, .scr = 2, .sbs = 2, .gc3 = 3},
 398        { .lomax = 277000000, .svco = 0, .spd = 1, .scr = 2, .sbs = 2, .gc3 = 3},
 399        { .lomax = 325000000, .svco = 1, .spd = 1, .scr = 2, .sbs = 2, .gc3 = 1},
 400        { .lomax = 334500000, .svco = 1, .spd = 1, .scr = 2, .sbs = 3, .gc3 = 3},
 401        { .lomax = 401000000, .svco = 2, .spd = 1, .scr = 2, .sbs = 3, .gc3 = 3},
 402        { .lomax = 468000000, .svco = 3, .spd = 1, .scr = 2, .sbs = 3, .gc3 = 1},
 403        { .lomax = 535000000, .svco = 0, .spd = 0, .scr = 1, .sbs = 3, .gc3 = 1},
 404        { .lomax = 554000000, .svco = 0, .spd = 0, .scr = 2, .sbs = 3, .gc3 = 1},
 405        { .lomax = 638000000, .svco = 1, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 1},
 406        { .lomax = 669000000, .svco = 1, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 1},
 407        { .lomax = 720000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 1},
 408        { .lomax = 802000000, .svco = 2, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 1},
 409        { .lomax = 835000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 1},
 410        { .lomax = 885000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 1},
 411        { .lomax = 911000000, .svco = 3, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 1},
 412        { .lomax =         0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0}
 413};
 414
 415static struct tda827xa_data tda827xa_analog[] = {
 416        { .lomax =  56875000, .svco = 3, .spd = 4, .scr = 0, .sbs = 0, .gc3 = 3},
 417        { .lomax =  67250000, .svco = 0, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3},
 418        { .lomax =  81250000, .svco = 1, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3},
 419        { .lomax =  97500000, .svco = 2, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3},
 420        { .lomax = 113750000, .svco = 3, .spd = 3, .scr = 0, .sbs = 1, .gc3 = 1},
 421        { .lomax = 134500000, .svco = 0, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
 422        { .lomax = 154000000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
 423        { .lomax = 162500000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
 424        { .lomax = 183000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
 425        { .lomax = 195000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},
 426        { .lomax = 227500000, .svco = 3, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 3},
 427        { .lomax = 269000000, .svco = 0, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 3},
 428        { .lomax = 325000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},
 429        { .lomax = 390000000, .svco = 2, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 3},
 430        { .lomax = 455000000, .svco = 3, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 3},
 431        { .lomax = 520000000, .svco = 0, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
 432        { .lomax = 538000000, .svco = 0, .spd = 0, .scr = 1, .sbs = 3, .gc3 = 1},
 433        { .lomax = 554000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
 434        { .lomax = 620000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
 435        { .lomax = 650000000, .svco = 1, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
 436        { .lomax = 700000000, .svco = 2, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
 437        { .lomax = 780000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
 438        { .lomax = 820000000, .svco = 3, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
 439        { .lomax = 870000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
 440        { .lomax = 911000000, .svco = 3, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 0},
 441        { .lomax =         0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0}
 442};
 443
 444static int tda827xa_sleep(struct dvb_frontend *fe)
 445{
 446        struct tda827x_priv *priv = fe->tuner_priv;
 447        static u8 buf[] = { 0x30, 0x90 };
 448        struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
 449                               .buf = buf, .len = sizeof(buf) };
 450
 451        dprintk("%s:\n", __func__);
 452
 453        tuner_transfer(fe, &msg, 1);
 454
 455        if (priv->cfg && priv->cfg->sleep)
 456                priv->cfg->sleep(fe);
 457
 458        return 0;
 459}
 460
 461static void tda827xa_lna_gain(struct dvb_frontend *fe, int high,
 462                              struct analog_parameters *params)
 463{
 464        struct tda827x_priv *priv = fe->tuner_priv;
 465        unsigned char buf[] = {0x22, 0x01};
 466        int arg;
 467        int gp_func;
 468        struct i2c_msg msg = { .flags = 0, .buf = buf, .len = sizeof(buf) };
 469
 470        if (NULL == priv->cfg) {
 471                dprintk("tda827x_config not defined, cannot set LNA gain!\n");
 472                return;
 473        }
 474        msg.addr = priv->cfg->switch_addr;
 475        if (priv->cfg->config) {
 476                if (high)
 477                        dprintk("setting LNA to high gain\n");
 478                else
 479                        dprintk("setting LNA to low gain\n");
 480        }
 481        switch (priv->cfg->config) {
 482        case TDA8290_LNA_OFF: /* no LNA */
 483                break;
 484        case TDA8290_LNA_GP0_HIGH_ON: /* switch is GPIO 0 of tda8290 */
 485        case TDA8290_LNA_GP0_HIGH_OFF:
 486                if (params == NULL) {
 487                        gp_func = 0;
 488                        arg  = 0;
 489                } else {
 490                        /* turn Vsync on */
 491                        gp_func = 1;
 492                        if (params->std & V4L2_STD_MN)
 493                                arg = 1;
 494                        else
 495                                arg = 0;
 496                }
 497                if (fe->callback)
 498                        fe->callback(priv->i2c_adap->algo_data,
 499                                     DVB_FRONTEND_COMPONENT_TUNER,
 500                                     gp_func, arg);
 501                buf[1] = high ? 0 : 1;
 502                if (priv->cfg->config == TDA8290_LNA_GP0_HIGH_OFF)
 503                        buf[1] = high ? 1 : 0;
 504                tuner_transfer(fe, &msg, 1);
 505                break;
 506        case TDA8290_LNA_ON_BRIDGE: /* switch with GPIO of saa713x */
 507                if (fe->callback)
 508                        fe->callback(priv->i2c_adap->algo_data,
 509                                     DVB_FRONTEND_COMPONENT_TUNER, 0, high);
 510                break;
 511        }
 512}
 513
 514static int tda827xa_set_params(struct dvb_frontend *fe)
 515{
 516        struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 517        struct tda827x_priv *priv = fe->tuner_priv;
 518        struct tda827xa_data *frequency_map = tda827xa_dvbt;
 519        u8 buf[11];
 520
 521        struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
 522                               .buf = buf, .len = sizeof(buf) };
 523
 524        int i, tuner_freq, if_freq, rc;
 525        u32 N;
 526
 527        dprintk("%s:\n", __func__);
 528
 529        tda827xa_lna_gain(fe, 1, NULL);
 530        msleep(20);
 531
 532        if (c->bandwidth_hz == 0) {
 533                if_freq = 5000000;
 534        } else if (c->bandwidth_hz <= 6000000) {
 535                if_freq = 4000000;
 536        } else if (c->bandwidth_hz <= 7000000) {
 537                if_freq = 4500000;
 538        } else {        /* 8 MHz */
 539                if_freq = 5000000;
 540        }
 541        tuner_freq = c->frequency;
 542
 543        switch (c->delivery_system) {
 544        case SYS_DVBC_ANNEX_A:
 545        case SYS_DVBC_ANNEX_C:
 546                dprintk("%s select tda827xa_dvbc\n", __func__);
 547                frequency_map = tda827xa_dvbc;
 548                break;
 549        default:
 550                break;
 551        }
 552
 553        i = 0;
 554        while (frequency_map[i].lomax < tuner_freq) {
 555                if (frequency_map[i + 1].lomax == 0)
 556                        break;
 557                i++;
 558        }
 559
 560        tuner_freq += if_freq;
 561
 562        N = ((tuner_freq + 31250) / 62500) << frequency_map[i].spd;
 563        buf[0] = 0;            // subaddress
 564        buf[1] = N >> 8;
 565        buf[2] = N & 0xff;
 566        buf[3] = 0;
 567        buf[4] = 0x16;
 568        buf[5] = (frequency_map[i].spd << 5) + (frequency_map[i].svco << 3) +
 569                        frequency_map[i].sbs;
 570        buf[6] = 0x4b + (frequency_map[i].gc3 << 4);
 571        buf[7] = 0x1c;
 572        buf[8] = 0x06;
 573        buf[9] = 0x24;
 574        buf[10] = 0x00;
 575        msg.len = 11;
 576        rc = tuner_transfer(fe, &msg, 1);
 577        if (rc < 0)
 578                goto err;
 579
 580        buf[0] = 0x90;
 581        buf[1] = 0xff;
 582        buf[2] = 0x60;
 583        buf[3] = 0x00;
 584        buf[4] = 0x59;  // lpsel, for 6MHz + 2
 585        msg.len = 5;
 586        rc = tuner_transfer(fe, &msg, 1);
 587        if (rc < 0)
 588                goto err;
 589
 590        buf[0] = 0xa0;
 591        buf[1] = 0x40;
 592        msg.len = 2;
 593        rc = tuner_transfer(fe, &msg, 1);
 594        if (rc < 0)
 595                goto err;
 596
 597        msleep(11);
 598        msg.flags = I2C_M_RD;
 599        rc = tuner_transfer(fe, &msg, 1);
 600        if (rc < 0)
 601                goto err;
 602        msg.flags = 0;
 603
 604        buf[1] >>= 4;
 605        dprintk("tda8275a AGC2 gain is: %d\n", buf[1]);
 606        if ((buf[1]) < 2) {
 607                tda827xa_lna_gain(fe, 0, NULL);
 608                buf[0] = 0x60;
 609                buf[1] = 0x0c;
 610                rc = tuner_transfer(fe, &msg, 1);
 611                if (rc < 0)
 612                        goto err;
 613        }
 614
 615        buf[0] = 0xc0;
 616        buf[1] = 0x99;    // lpsel, for 6MHz + 2
 617        rc = tuner_transfer(fe, &msg, 1);
 618        if (rc < 0)
 619                goto err;
 620
 621        buf[0] = 0x60;
 622        buf[1] = 0x3c;
 623        rc = tuner_transfer(fe, &msg, 1);
 624        if (rc < 0)
 625                goto err;
 626
 627        /* correct CP value */
 628        buf[0] = 0x30;
 629        buf[1] = 0x10 + frequency_map[i].scr;
 630        rc = tuner_transfer(fe, &msg, 1);
 631        if (rc < 0)
 632                goto err;
 633
 634        msleep(163);
 635        buf[0] = 0xc0;
 636        buf[1] = 0x39;  // lpsel, for 6MHz + 2
 637        rc = tuner_transfer(fe, &msg, 1);
 638        if (rc < 0)
 639                goto err;
 640
 641        msleep(3);
 642        /* freeze AGC1 */
 643        buf[0] = 0x50;
 644        buf[1] = 0x4f + (frequency_map[i].gc3 << 4);
 645        rc = tuner_transfer(fe, &msg, 1);
 646        if (rc < 0)
 647                goto err;
 648
 649        priv->frequency = c->frequency;
 650        priv->bandwidth = c->bandwidth_hz;
 651
 652        return 0;
 653
 654err:
 655        printk(KERN_ERR "%s: could not write to tuner at addr: 0x%02x\n",
 656               __func__, priv->i2c_addr << 1);
 657        return rc;
 658}
 659
 660
 661static int tda827xa_set_analog_params(struct dvb_frontend *fe,
 662                                      struct analog_parameters *params)
 663{
 664        unsigned char tuner_reg[11];
 665        u32 N;
 666        int i;
 667        struct tda827x_priv *priv = fe->tuner_priv;
 668        struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
 669                               .buf = tuner_reg, .len = sizeof(tuner_reg) };
 670        unsigned int freq = params->frequency;
 671
 672        tda827x_set_std(fe, params);
 673
 674        tda827xa_lna_gain(fe, 1, params);
 675        msleep(10);
 676
 677        if (params->mode == V4L2_TUNER_RADIO)
 678                freq = freq / 1000;
 679
 680        N = freq + priv->sgIF;
 681
 682        i = 0;
 683        while (tda827xa_analog[i].lomax < N * 62500) {
 684                if (tda827xa_analog[i + 1].lomax == 0)
 685                        break;
 686                i++;
 687        }
 688
 689        N = N << tda827xa_analog[i].spd;
 690
 691        tuner_reg[0] = 0;
 692        tuner_reg[1] = (unsigned char)(N>>8);
 693        tuner_reg[2] = (unsigned char) N;
 694        tuner_reg[3] = 0;
 695        tuner_reg[4] = 0x16;
 696        tuner_reg[5] = (tda827xa_analog[i].spd << 5) +
 697                       (tda827xa_analog[i].svco << 3) +
 698                        tda827xa_analog[i].sbs;
 699        tuner_reg[6] = 0x8b + (tda827xa_analog[i].gc3 << 4);
 700        tuner_reg[7] = 0x1c;
 701        tuner_reg[8] = 4;
 702        tuner_reg[9] = 0x20;
 703        tuner_reg[10] = 0x00;
 704        msg.len = 11;
 705        tuner_transfer(fe, &msg, 1);
 706
 707        tuner_reg[0] = 0x90;
 708        tuner_reg[1] = 0xff;
 709        tuner_reg[2] = 0xe0;
 710        tuner_reg[3] = 0;
 711        tuner_reg[4] = 0x99 + (priv->lpsel << 1);
 712        msg.len = 5;
 713        tuner_transfer(fe, &msg, 1);
 714
 715        tuner_reg[0] = 0xa0;
 716        tuner_reg[1] = 0xc0;
 717        msg.len = 2;
 718        tuner_transfer(fe, &msg, 1);
 719
 720        tuner_reg[0] = 0x30;
 721        tuner_reg[1] = 0x10 + tda827xa_analog[i].scr;
 722        tuner_transfer(fe, &msg, 1);
 723
 724        msg.flags = I2C_M_RD;
 725        tuner_transfer(fe, &msg, 1);
 726        msg.flags = 0;
 727        tuner_reg[1] >>= 4;
 728        dprintk("AGC2 gain is: %d\n", tuner_reg[1]);
 729        if (tuner_reg[1] < 1)
 730                tda827xa_lna_gain(fe, 0, params);
 731
 732        msleep(100);
 733        tuner_reg[0] = 0x60;
 734        tuner_reg[1] = 0x3c;
 735        tuner_transfer(fe, &msg, 1);
 736
 737        msleep(163);
 738        tuner_reg[0] = 0x50;
 739        tuner_reg[1] = 0x8f + (tda827xa_analog[i].gc3 << 4);
 740        tuner_transfer(fe, &msg, 1);
 741
 742        tuner_reg[0] = 0x80;
 743        tuner_reg[1] = 0x28;
 744        tuner_transfer(fe, &msg, 1);
 745
 746        tuner_reg[0] = 0xb0;
 747        tuner_reg[1] = 0x01;
 748        tuner_transfer(fe, &msg, 1);
 749
 750        tuner_reg[0] = 0xc0;
 751        tuner_reg[1] = 0x19 + (priv->lpsel << 1);
 752        tuner_transfer(fe, &msg, 1);
 753
 754        priv->frequency = params->frequency;
 755
 756        return 0;
 757}
 758
 759static void tda827xa_agcf(struct dvb_frontend *fe)
 760{
 761        struct tda827x_priv *priv = fe->tuner_priv;
 762        unsigned char data[] = {0x80, 0x2c};
 763        struct i2c_msg msg = {.addr = priv->i2c_addr, .flags = 0,
 764                              .buf = data, .len = 2};
 765        tuner_transfer(fe, &msg, 1);
 766}
 767
 768/* ------------------------------------------------------------------ */
 769
 770static int tda827x_release(struct dvb_frontend *fe)
 771{
 772        kfree(fe->tuner_priv);
 773        fe->tuner_priv = NULL;
 774        return 0;
 775}
 776
 777static int tda827x_get_frequency(struct dvb_frontend *fe, u32 *frequency)
 778{
 779        struct tda827x_priv *priv = fe->tuner_priv;
 780        *frequency = priv->frequency;
 781        return 0;
 782}
 783
 784static int tda827x_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
 785{
 786        struct tda827x_priv *priv = fe->tuner_priv;
 787        *bandwidth = priv->bandwidth;
 788        return 0;
 789}
 790
 791static int tda827x_init(struct dvb_frontend *fe)
 792{
 793        struct tda827x_priv *priv = fe->tuner_priv;
 794        dprintk("%s:\n", __func__);
 795        if (priv->cfg && priv->cfg->init)
 796                priv->cfg->init(fe);
 797
 798        return 0;
 799}
 800
 801static int tda827x_probe_version(struct dvb_frontend *fe);
 802
 803static int tda827x_initial_init(struct dvb_frontend *fe)
 804{
 805        int ret;
 806        ret = tda827x_probe_version(fe);
 807        if (ret)
 808                return ret;
 809        return fe->ops.tuner_ops.init(fe);
 810}
 811
 812static int tda827x_initial_sleep(struct dvb_frontend *fe)
 813{
 814        int ret;
 815        ret = tda827x_probe_version(fe);
 816        if (ret)
 817                return ret;
 818        return fe->ops.tuner_ops.sleep(fe);
 819}
 820
 821static const struct dvb_tuner_ops tda827xo_tuner_ops = {
 822        .info = {
 823                .name = "Philips TDA827X",
 824                .frequency_min  =  55000000,
 825                .frequency_max  = 860000000,
 826                .frequency_step =    250000
 827        },
 828        .release = tda827x_release,
 829        .init = tda827x_initial_init,
 830        .sleep = tda827x_initial_sleep,
 831        .set_params = tda827xo_set_params,
 832        .set_analog_params = tda827xo_set_analog_params,
 833        .get_frequency = tda827x_get_frequency,
 834        .get_bandwidth = tda827x_get_bandwidth,
 835};
 836
 837static const struct dvb_tuner_ops tda827xa_tuner_ops = {
 838        .info = {
 839                .name = "Philips TDA827XA",
 840                .frequency_min  =  44000000,
 841                .frequency_max  = 906000000,
 842                .frequency_step =     62500
 843        },
 844        .release = tda827x_release,
 845        .init = tda827x_init,
 846        .sleep = tda827xa_sleep,
 847        .set_params = tda827xa_set_params,
 848        .set_analog_params = tda827xa_set_analog_params,
 849        .get_frequency = tda827x_get_frequency,
 850        .get_bandwidth = tda827x_get_bandwidth,
 851};
 852
 853static int tda827x_probe_version(struct dvb_frontend *fe)
 854{
 855        u8 data;
 856        int rc;
 857        struct tda827x_priv *priv = fe->tuner_priv;
 858        struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = I2C_M_RD,
 859                               .buf = &data, .len = 1 };
 860
 861        rc = tuner_transfer(fe, &msg, 1);
 862
 863        if (rc < 0) {
 864                printk("%s: could not read from tuner at addr: 0x%02x\n",
 865                       __func__, msg.addr << 1);
 866                return rc;
 867        }
 868        if ((data & 0x3c) == 0) {
 869                dprintk("tda827x tuner found\n");
 870                fe->ops.tuner_ops.init  = tda827x_init;
 871                fe->ops.tuner_ops.sleep = tda827xo_sleep;
 872                if (priv->cfg)
 873                        priv->cfg->agcf = tda827xo_agcf;
 874        } else {
 875                dprintk("tda827xa tuner found\n");
 876                memcpy(&fe->ops.tuner_ops, &tda827xa_tuner_ops, sizeof(struct dvb_tuner_ops));
 877                if (priv->cfg)
 878                        priv->cfg->agcf = tda827xa_agcf;
 879        }
 880        return 0;
 881}
 882
 883struct dvb_frontend *tda827x_attach(struct dvb_frontend *fe, int addr,
 884                                    struct i2c_adapter *i2c,
 885                                    struct tda827x_config *cfg)
 886{
 887        struct tda827x_priv *priv = NULL;
 888
 889        dprintk("%s:\n", __func__);
 890        priv = kzalloc(sizeof(struct tda827x_priv), GFP_KERNEL);
 891        if (priv == NULL)
 892                return NULL;
 893
 894        priv->i2c_addr = addr;
 895        priv->i2c_adap = i2c;
 896        priv->cfg = cfg;
 897        memcpy(&fe->ops.tuner_ops, &tda827xo_tuner_ops, sizeof(struct dvb_tuner_ops));
 898        fe->tuner_priv = priv;
 899
 900        dprintk("type set to %s\n", fe->ops.tuner_ops.info.name);
 901
 902        return fe;
 903}
 904EXPORT_SYMBOL_GPL(tda827x_attach);
 905
 906MODULE_DESCRIPTION("DVB TDA827x driver");
 907MODULE_AUTHOR("Hartmut Hackmann <hartmut.hackmann@t-online.de>");
 908MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
 909MODULE_LICENSE("GPL");
 910