drivers/media/tuners/mxl5007t.c

   1 /*
   2  *  mxl5007t.c - driver for the MaxLinear MxL5007T silicon tuner
   3  *
   4  *  Copyright (C) 2008, 2009 Michael Krufky <mkrufky@linuxtv.org>
   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/i2c.h>
  22 #include <linux/types.h>
  23 #include <linux/videodev2.h>
  24 #include "tuner-i2c.h"
  25 #include "mxl5007t.h"
  26
  27 static DEFINE_MUTEX(mxl5007t_list_mutex);
  28 static LIST_HEAD(hybrid_tuner_instance_list);
  29
  30 static int mxl5007t_debug;
  31 module_param_named(debug, mxl5007t_debug, int, 0644);
  32 MODULE_PARM_DESC(debug, "set debug level");
  33
  34 /* ------------------------------------------------------------------------- */
  35
  36 #define mxl_printk(kern, fmt, arg...) \
  37         printk(kern "%s: " fmt "\n", __func__, ##arg)
  38
  39 #define mxl_err(fmt, arg...) \
  40         mxl_printk(KERN_ERR, "%d: " fmt, __LINE__, ##arg)
  41
  42 #define mxl_warn(fmt, arg...) \
  43         mxl_printk(KERN_WARNING, fmt, ##arg)
  44
  45 #define mxl_info(fmt, arg...) \
  46         mxl_printk(KERN_INFO, fmt, ##arg)
  47
  48 #define mxl_debug(fmt, arg...)                          \
  49 ({                                                      \
  50         if (mxl5007t_debug)                             \
  51                 mxl_printk(KERN_DEBUG, fmt, ##arg);     \
  52 })
  53
  54 #define mxl_fail(ret)                                                   \
  55 ({                                                                      \
  56         int __ret;                                                      \
  57         __ret = (ret < 0);                                              \
  58         if (__ret)                                                      \
  59                 mxl_printk(KERN_ERR, "error %d on line %d",             \
  60                            ret, __LINE__);                              \
  61         __ret;                                                          \
  62 })
  63
  64 /* ------------------------------------------------------------------------- */
  65
  66 #define MHz 1000000
  67
  68 enum mxl5007t_mode {
  69         MxL_MODE_ISDBT     =    0,
  70         MxL_MODE_DVBT      =    1,
  71         MxL_MODE_ATSC      =    2,
  72         MxL_MODE_CABLE     = 0x10,
  73 };
  74
  75 enum mxl5007t_chip_version {
  76         MxL_UNKNOWN_ID     = 0x00,
  77         MxL_5007_V1_F1     = 0x11,
  78         MxL_5007_V1_F2     = 0x12,
  79         MxL_5007_V4        = 0x14,
  80         MxL_5007_V2_100_F1 = 0x21,
  81         MxL_5007_V2_100_F2 = 0x22,
  82         MxL_5007_V2_200_F1 = 0x23,
  83         MxL_5007_V2_200_F2 = 0x24,
  84 };
  85
  86 struct reg_pair_t {
  87         u8 reg;
  88         u8 val;
  89 };
  90
  91 /* ------------------------------------------------------------------------- */
  92
  93 static struct reg_pair_t init_tab[] = {
  94         { 0x02, 0x06 },
  95         { 0x03, 0x48 },
  96         { 0x05, 0x04 },
  97         { 0x06, 0x10 },
  98         { 0x2e, 0x15 }, /* OVERRIDE */
  99         { 0x30, 0x10 }, /* OVERRIDE */
 100         { 0x45, 0x58 }, /* OVERRIDE */
 101         { 0x48, 0x19 }, /* OVERRIDE */
 102         { 0x52, 0x03 }, /* OVERRIDE */
 103         { 0x53, 0x44 }, /* OVERRIDE */
 104         { 0x6a, 0x4b }, /* OVERRIDE */
 105         { 0x76, 0x00 }, /* OVERRIDE */
 106         { 0x78, 0x18 }, /* OVERRIDE */
 107         { 0x7a, 0x17 }, /* OVERRIDE */
 108         { 0x85, 0x06 }, /* OVERRIDE */
 109         { 0x01, 0x01 }, /* TOP_MASTER_ENABLE */
 110         { 0, 0 }
 111 };
 112
 113 static struct reg_pair_t init_tab_cable[] = {
 114         { 0x02, 0x06 },
 115         { 0x03, 0x48 },
 116         { 0x05, 0x04 },
 117         { 0x06, 0x10 },
 118         { 0x09, 0x3f },
 119         { 0x0a, 0x3f },
 120         { 0x0b, 0x3f },
 121         { 0x2e, 0x15 }, /* OVERRIDE */
 122         { 0x30, 0x10 }, /* OVERRIDE */
 123         { 0x45, 0x58 }, /* OVERRIDE */
 124         { 0x48, 0x19 }, /* OVERRIDE */
 125         { 0x52, 0x03 }, /* OVERRIDE */
 126         { 0x53, 0x44 }, /* OVERRIDE */
 127         { 0x6a, 0x4b }, /* OVERRIDE */
 128         { 0x76, 0x00 }, /* OVERRIDE */
 129         { 0x78, 0x18 }, /* OVERRIDE */
 130         { 0x7a, 0x17 }, /* OVERRIDE */
 131         { 0x85, 0x06 }, /* OVERRIDE */
 132         { 0x01, 0x01 }, /* TOP_MASTER_ENABLE */
 133         { 0, 0 }
 134 };
 135
 136 /* ------------------------------------------------------------------------- */
 137
 138 static struct reg_pair_t reg_pair_rftune[] = {
 139         { 0x0f, 0x00 }, /* abort tune */
 140         { 0x0c, 0x15 },
 141         { 0x0d, 0x40 },
 142         { 0x0e, 0x0e },
 143         { 0x1f, 0x87 }, /* OVERRIDE */
 144         { 0x20, 0x1f }, /* OVERRIDE */
 145         { 0x21, 0x87 }, /* OVERRIDE */
 146         { 0x22, 0x1f }, /* OVERRIDE */
 147         { 0x80, 0x01 }, /* freq dependent */
 148         { 0x0f, 0x01 }, /* start tune */
 149         { 0, 0 }
 150 };
 151
 152 /* ------------------------------------------------------------------------- */
 153
 154 struct mxl5007t_state {
 155         struct list_head hybrid_tuner_instance_list;
 156         struct tuner_i2c_props i2c_props;
 157
 158         struct mutex lock;
 159
 160         struct mxl5007t_config *config;
 161
 162         enum mxl5007t_chip_version chip_id;
 163
 164         struct reg_pair_t tab_init[ARRAY_SIZE(init_tab)];
 165         struct reg_pair_t tab_init_cable[ARRAY_SIZE(init_tab_cable)];
 166         struct reg_pair_t tab_rftune[ARRAY_SIZE(reg_pair_rftune)];
 167
 168         enum mxl5007t_if_freq if_freq;
 169
 170         u32 frequency;
 171         u32 bandwidth;
 172 };
 173
 174 /* ------------------------------------------------------------------------- */
 175
 176 /* called by _init and _rftun to manipulate the register arrays */
 177
 178 static void set_reg_bits(struct reg_pair_t *reg_pair, u8 reg, u8 mask, u8 val)
 179 {
 180         unsigned int i = 0;
 181
 182         while (reg_pair[i].reg || reg_pair[i].val) {
 183                 if (reg_pair[i].reg == reg) {
 184                         reg_pair[i].val &= ~mask;
 185                         reg_pair[i].val |= val;
 186                 }
 187                 i++;
 188
 189         }
 190         return;
 191 }
 192
 193 static void copy_reg_bits(struct reg_pair_t *reg_pair1,
 194                           struct reg_pair_t *reg_pair2)
 195 {
 196         unsigned int i, j;
 197
 198         i = j = 0;
 199
 200         while (reg_pair1[i].reg || reg_pair1[i].val) {
 201                 while (reg_pair2[j].reg || reg_pair2[j].val) {
 202                         if (reg_pair1[i].reg != reg_pair2[j].reg) {
 203                                 j++;
 204                                 continue;
 205                         }
 206                         reg_pair2[j].val = reg_pair1[i].val;
 207                         break;
 208                 }
 209                 i++;
 210         }
 211         return;
 212 }
 213
 214 /* ------------------------------------------------------------------------- */
 215
 216 static void mxl5007t_set_mode_bits(struct mxl5007t_state *state,
 217                                    enum mxl5007t_mode mode,
 218                                    s32 if_diff_out_level)
 219 {
 220         switch (mode) {
 221         case MxL_MODE_ATSC:
 222                 set_reg_bits(state->tab_init, 0x06, 0x1f, 0x12);
 223                 break;
 224         case MxL_MODE_DVBT:
 225                 set_reg_bits(state->tab_init, 0x06, 0x1f, 0x11);
 226                 break;
 227         case MxL_MODE_ISDBT:
 228                 set_reg_bits(state->tab_init, 0x06, 0x1f, 0x10);
 229                 break;
 230         case MxL_MODE_CABLE:
 231                 set_reg_bits(state->tab_init_cable, 0x09, 0xff, 0xc1);
 232                 set_reg_bits(state->tab_init_cable, 0x0a, 0xff,
 233                              8 - if_diff_out_level);
 234                 set_reg_bits(state->tab_init_cable, 0x0b, 0xff, 0x17);
 235                 break;
 236         default:
 237                 mxl_fail(-EINVAL);
 238         }
 239         return;
 240 }
 241
 242 static void mxl5007t_set_if_freq_bits(struct mxl5007t_state *state,
 243                                       enum mxl5007t_if_freq if_freq,
 244                                       int invert_if)
 245 {
 246         u8 val;
 247
 248         switch (if_freq) {
 249         case MxL_IF_4_MHZ:
 250                 val = 0x00;
 251                 break;
 252         case MxL_IF_4_5_MHZ:
 253                 val = 0x02;
 254                 break;
 255         case MxL_IF_4_57_MHZ:
 256                 val = 0x03;
 257                 break;
 258         case MxL_IF_5_MHZ:
 259                 val = 0x04;
 260                 break;
 261         case MxL_IF_5_38_MHZ:
 262                 val = 0x05;
 263                 break;
 264         case MxL_IF_6_MHZ:
 265                 val = 0x06;
 266                 break;
 267         case MxL_IF_6_28_MHZ:
 268                 val = 0x07;
 269                 break;
 270         case MxL_IF_9_1915_MHZ:
 271                 val = 0x08;
 272                 break;
 273         case MxL_IF_35_25_MHZ:
 274                 val = 0x09;
 275                 break;
 276         case MxL_IF_36_15_MHZ:
 277                 val = 0x0a;
 278                 break;
 279         case MxL_IF_44_MHZ:
 280                 val = 0x0b;
 281                 break;
 282         default:
 283                 mxl_fail(-EINVAL);
 284                 return;
 285         }
 286         set_reg_bits(state->tab_init, 0x02, 0x0f, val);
 287
 288         /* set inverted IF or normal IF */
 289         set_reg_bits(state->tab_init, 0x02, 0x10, invert_if ? 0x10 : 0x00);
 290
 291         state->if_freq = if_freq;
 292
 293         return;
 294 }
 295
 296 static void mxl5007t_set_xtal_freq_bits(struct mxl5007t_state *state,
 297                                         enum mxl5007t_xtal_freq xtal_freq)
 298 {
 299         switch (xtal_freq) {
 300         case MxL_XTAL_16_MHZ:
 301                 /* select xtal freq & ref freq */
 302                 set_reg_bits(state->tab_init, 0x03, 0xf0, 0x00);
 303                 set_reg_bits(state->tab_init, 0x05, 0x0f, 0x00);
 304                 break;
 305         case MxL_XTAL_20_MHZ:
 306                 set_reg_bits(state->tab_init, 0x03, 0xf0, 0x10);
 307                 set_reg_bits(state->tab_init, 0x05, 0x0f, 0x01);
 308                 break;
 309         case MxL_XTAL_20_25_MHZ:
 310                 set_reg_bits(state->tab_init, 0x03, 0xf0, 0x20);
 311                 set_reg_bits(state->tab_init, 0x05, 0x0f, 0x02);
 312                 break;
 313         case MxL_XTAL_20_48_MHZ:
 314                 set_reg_bits(state->tab_init, 0x03, 0xf0, 0x30);
 315                 set_reg_bits(state->tab_init, 0x05, 0x0f, 0x03);
 316                 break;
 317         case MxL_XTAL_24_MHZ:
 318                 set_reg_bits(state->tab_init, 0x03, 0xf0, 0x40);
 319                 set_reg_bits(state->tab_init, 0x05, 0x0f, 0x04);
 320                 break;
 321         case MxL_XTAL_25_MHZ:
 322                 set_reg_bits(state->tab_init, 0x03, 0xf0, 0x50);
 323                 set_reg_bits(state->tab_init, 0x05, 0x0f, 0x05);
 324                 break;
 325         case MxL_XTAL_25_14_MHZ:
 326                 set_reg_bits(state->tab_init, 0x03, 0xf0, 0x60);
 327                 set_reg_bits(state->tab_init, 0x05, 0x0f, 0x06);
 328                 break;
 329         case MxL_XTAL_27_MHZ:
 330                 set_reg_bits(state->tab_init, 0x03, 0xf0, 0x70);
 331                 set_reg_bits(state->tab_init, 0x05, 0x0f, 0x07);
 332                 break;
 333         case MxL_XTAL_28_8_MHZ:
 334                 set_reg_bits(state->tab_init, 0x03, 0xf0, 0x80);
 335                 set_reg_bits(state->tab_init, 0x05, 0x0f, 0x08);
 336                 break;
 337         case MxL_XTAL_32_MHZ:
 338                 set_reg_bits(state->tab_init, 0x03, 0xf0, 0x90);
 339                 set_reg_bits(state->tab_init, 0x05, 0x0f, 0x09);
 340                 break;
 341         case MxL_XTAL_40_MHZ:
 342                 set_reg_bits(state->tab_init, 0x03, 0xf0, 0xa0);
 343                 set_reg_bits(state->tab_init, 0x05, 0x0f, 0x0a);
 344                 break;
 345         case MxL_XTAL_44_MHZ:
 346                 set_reg_bits(state->tab_init, 0x03, 0xf0, 0xb0);
 347                 set_reg_bits(state->tab_init, 0x05, 0x0f, 0x0b);
 348                 break;
 349         case MxL_XTAL_48_MHZ:
 350                 set_reg_bits(state->tab_init, 0x03, 0xf0, 0xc0);
 351                 set_reg_bits(state->tab_init, 0x05, 0x0f, 0x0c);
 352                 break;
 353         case MxL_XTAL_49_3811_MHZ:
 354                 set_reg_bits(state->tab_init, 0x03, 0xf0, 0xd0);
 355                 set_reg_bits(state->tab_init, 0x05, 0x0f, 0x0d);
 356                 break;
 357         default:
 358                 mxl_fail(-EINVAL);
 359                 return;
 360         }
 361
 362         return;
 363 }
 364
 365 static struct reg_pair_t *mxl5007t_calc_init_regs(struct mxl5007t_state *state,
 366                                                   enum mxl5007t_mode mode)
 367 {
 368         struct mxl5007t_config *cfg = state->config;
 369
 370         memcpy(&state->tab_init, &init_tab, sizeof(init_tab));
 371         memcpy(&state->tab_init_cable, &init_tab_cable, sizeof(init_tab_cable));
 372
 373         mxl5007t_set_mode_bits(state, mode, cfg->if_diff_out_level);
 374         mxl5007t_set_if_freq_bits(state, cfg->if_freq_hz, cfg->invert_if);
 375         mxl5007t_set_xtal_freq_bits(state, cfg->xtal_freq_hz);
 376
 377         set_reg_bits(state->tab_init, 0x03, 0x08, cfg->clk_out_enable << 3);
 378         set_reg_bits(state->tab_init, 0x03, 0x07, cfg->clk_out_amp);
 379
 380         if (mode >= MxL_MODE_CABLE) {
 381                 copy_reg_bits(state->tab_init, state->tab_init_cable);
 382                 return state->tab_init_cable;
 383         } else
 384                 return state->tab_init;
 385 }
 386
 387 /* ------------------------------------------------------------------------- */
 388
 389 enum mxl5007t_bw_mhz {
 390         MxL_BW_6MHz = 6,
 391         MxL_BW_7MHz = 7,
 392         MxL_BW_8MHz = 8,
 393 };
 394
 395 static void mxl5007t_set_bw_bits(struct mxl5007t_state *state,
 396                                  enum mxl5007t_bw_mhz bw)
 397 {
 398         u8 val;
 399
 400         switch (bw) {
 401         case MxL_BW_6MHz:
 402                 val = 0x15; /* set DIG_MODEINDEX, DIG_MODEINDEX_A,
 403                              * and DIG_MODEINDEX_CSF */
 404                 break;
 405         case MxL_BW_7MHz:
 406                 val = 0x2a;
 407                 break;
 408         case MxL_BW_8MHz:
 409                 val = 0x3f;
 410                 break;
 411         default:
 412                 mxl_fail(-EINVAL);
 413                 return;
 414         }
 415         set_reg_bits(state->tab_rftune, 0x0c, 0x3f, val);
 416
 417         return;
 418 }
 419
 420 static struct
 421 reg_pair_t *mxl5007t_calc_rf_tune_regs(struct mxl5007t_state *state,
 422                                        u32 rf_freq, enum mxl5007t_bw_mhz bw)
 423 {
 424         u32 dig_rf_freq = 0;
 425         u32 temp;
 426         u32 frac_divider = 1000000;
 427         unsigned int i;
 428
 429         memcpy(&state->tab_rftune, &reg_pair_rftune, sizeof(reg_pair_rftune));
 430
 431         mxl5007t_set_bw_bits(state, bw);
 432
 433         /* Convert RF frequency into 16 bits =>
 434          * 10 bit integer (MHz) + 6 bit fraction */
 435         dig_rf_freq = rf_freq / MHz;
 436
 437         temp = rf_freq % MHz;
 438
 439         for (i = 0; i < 6; i++) {
 440                 dig_rf_freq <<= 1;
 441                 frac_divider /= 2;
 442                 if (temp > frac_divider) {
 443                         temp -= frac_divider;
 444                         dig_rf_freq++;
 445                 }
 446         }
 447
 448         /* add to have shift center point by 7.8124 kHz */
 449         if (temp > 7812)
 450                 dig_rf_freq++;
 451
 452         set_reg_bits(state->tab_rftune, 0x0d, 0xff, (u8) dig_rf_freq);
 453         set_reg_bits(state->tab_rftune, 0x0e, 0xff, (u8) (dig_rf_freq >> 8));
 454
 455         if (rf_freq >= 333000000)
 456                 set_reg_bits(state->tab_rftune, 0x80, 0x40, 0x40);
 457
 458         return state->tab_rftune;
 459 }
 460
 461 /* ------------------------------------------------------------------------- */
 462
 463 static int mxl5007t_write_reg(struct mxl5007t_state *state, u8 reg, u8 val)
 464 {
 465         u8 buf[] = { reg, val };
 466         struct i2c_msg msg = { .addr = state->i2c_props.addr, .flags = 0,
 467                                .buf = buf, .len = 2 };
 468         int ret;
 469
 470         ret = i2c_transfer(state->i2c_props.adap, &msg, 1);
 471         if (ret != 1) {
 472                 mxl_err("failed!");
 473                 return -EREMOTEIO;
 474         }
 475         return 0;
 476 }
 477
 478 static int mxl5007t_write_regs(struct mxl5007t_state *state,
 479                                struct reg_pair_t *reg_pair)
 480 {
 481         unsigned int i = 0;
 482         int ret = 0;
 483
 484         while ((ret == 0) && (reg_pair[i].reg || reg_pair[i].val)) {
 485                 ret = mxl5007t_write_reg(state,
 486                                          reg_pair[i].reg, reg_pair[i].val);
 487                 i++;
 488         }
 489         return ret;
 490 }
 491
 492 static int mxl5007t_read_reg(struct mxl5007t_state *state, u8 reg, u8 *val)
 493 {
 494         u8 buf[2] = { 0xfb, reg };
 495         struct i2c_msg msg[] = {
 496                 { .addr = state->i2c_props.addr, .flags = 0,
 497                   .buf = buf, .len = 2 },
 498                 { .addr = state->i2c_props.addr, .flags = I2C_M_RD,
 499                   .buf = val, .len = 1 },
 500         };
 501         int ret;
 502
 503         ret = i2c_transfer(state->i2c_props.adap, msg, 2);
 504         if (ret != 2) {
 505                 mxl_err("failed!");
 506                 return -EREMOTEIO;
 507         }
 508         return 0;
 509 }
 510
 511 static int mxl5007t_soft_reset(struct mxl5007t_state *state)
 512 {
 513         u8 d = 0xff;
 514         struct i2c_msg msg = {
 515                 .addr = state->i2c_props.addr, .flags = 0,
 516                 .buf = &d, .len = 1
 517         };
 518         int ret = i2c_transfer(state->i2c_props.adap, &msg, 1);
 519
 520         if (ret != 1) {
 521                 mxl_err("failed!");
 522                 return -EREMOTEIO;
 523         }
 524         return 0;
 525 }
 526
 527 static int mxl5007t_tuner_init(struct mxl5007t_state *state,
 528                                enum mxl5007t_mode mode)
 529 {
 530         struct reg_pair_t *init_regs;
 531         int ret;
 532
 533         /* calculate initialization reg array */
 534         init_regs = mxl5007t_calc_init_regs(state, mode);
 535
 536         ret = mxl5007t_write_regs(state, init_regs);
 537         if (mxl_fail(ret))
 538                 goto fail;
 539         mdelay(1);
 540 fail:
 541         return ret;
 542 }
 543
 544 static int mxl5007t_tuner_rf_tune(struct mxl5007t_state *state, u32 rf_freq_hz,
 545                                   enum mxl5007t_bw_mhz bw)
 546 {
 547         struct reg_pair_t *rf_tune_regs;
 548         int ret;
 549
 550         /* calculate channel change reg array */
 551         rf_tune_regs = mxl5007t_calc_rf_tune_regs(state, rf_freq_hz, bw);
 552
 553         ret = mxl5007t_write_regs(state, rf_tune_regs);
 554         if (mxl_fail(ret))
 555                 goto fail;
 556         msleep(3);
 557 fail:
 558         return ret;
 559 }
 560
 561 /* ------------------------------------------------------------------------- */
 562
 563 static int mxl5007t_synth_lock_status(struct mxl5007t_state *state,
 564                                       int *rf_locked, int *ref_locked)
 565 {
 566         u8 d;
 567         int ret;
 568
 569         *rf_locked = 0;
 570         *ref_locked = 0;
 571
 572         ret = mxl5007t_read_reg(state, 0xd8, &d);
 573         if (mxl_fail(ret))
 574                 goto fail;
 575
 576         if ((d & 0x0c) == 0x0c)
 577                 *rf_locked = 1;
 578
 579         if ((d & 0x03) == 0x03)
 580                 *ref_locked = 1;
 581 fail:
 582         return ret;
 583 }
 584
 585 /* ------------------------------------------------------------------------- */
 586
 587 static int mxl5007t_get_status(struct dvb_frontend *fe, u32 *status)
 588 {
 589         struct mxl5007t_state *state = fe->tuner_priv;
 590         int rf_locked, ref_locked, ret;
 591
 592         *status = 0;
 593
 594         if (fe->ops.i2c_gate_ctrl)
 595                 fe->ops.i2c_gate_ctrl(fe, 1);
 596
 597         ret = mxl5007t_synth_lock_status(state, &rf_locked, &ref_locked);
 598         if (mxl_fail(ret))
 599                 goto fail;
 600         mxl_debug("%s%s", rf_locked ? "rf locked " : "",
 601                   ref_locked ? "ref locked" : "");
 602
 603         if ((rf_locked) || (ref_locked))
 604                 *status |= TUNER_STATUS_LOCKED;
 605 fail:
 606         if (fe->ops.i2c_gate_ctrl)
 607                 fe->ops.i2c_gate_ctrl(fe, 0);
 608
 609         return ret;
 610 }
 611
 612 /* ------------------------------------------------------------------------- */
 613
 614 static int mxl5007t_set_params(struct dvb_frontend *fe)
 615 {
 616         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 617         u32 delsys = c->delivery_system;
 618         struct mxl5007t_state *state = fe->tuner_priv;
 619         enum mxl5007t_bw_mhz bw;
 620         enum mxl5007t_mode mode;
 621         int ret;
 622         u32 freq = c->frequency;
 623
 624         switch (delsys) {
 625         case SYS_ATSC:
 626                 mode = MxL_MODE_ATSC;
 627                 bw = MxL_BW_6MHz;
 628                 break;
 629         case SYS_DVBC_ANNEX_B:
 630                 mode = MxL_MODE_CABLE;
 631                 bw = MxL_BW_6MHz;
 632                 break;
 633         case SYS_DVBT:
 634         case SYS_DVBT2:
 635                 mode = MxL_MODE_DVBT;
 636                 switch (c->bandwidth_hz) {
 637                 case 6000000:
 638                         bw = MxL_BW_6MHz;
 639                         break;
 640                 case 7000000:
 641                         bw = MxL_BW_7MHz;
 642                         break;
 643                 case 8000000:
 644                         bw = MxL_BW_8MHz;
 645                         break;
 646                 default:
 647                         return -EINVAL;
 648                 }
 649                 break;
 650         default:
 651                 mxl_err("modulation type not supported!");
 652                 return -EINVAL;
 653         }
 654
 655         if (fe->ops.i2c_gate_ctrl)
 656                 fe->ops.i2c_gate_ctrl(fe, 1);
 657
 658         mutex_lock(&state->lock);
 659
 660         ret = mxl5007t_tuner_init(state, mode);
 661         if (mxl_fail(ret))
 662                 goto fail;
 663
 664         ret = mxl5007t_tuner_rf_tune(state, freq, bw);
 665         if (mxl_fail(ret))
 666                 goto fail;
 667
 668         state->frequency = freq;
 669         state->bandwidth = c->bandwidth_hz;
 670 fail:
 671         mutex_unlock(&state->lock);
 672
 673         if (fe->ops.i2c_gate_ctrl)
 674                 fe->ops.i2c_gate_ctrl(fe, 0);
 675
 676         return ret;
 677 }
 678
 679 /* ------------------------------------------------------------------------- */
 680
 681 static int mxl5007t_init(struct dvb_frontend *fe)
 682 {
 683         struct mxl5007t_state *state = fe->tuner_priv;
 684         int ret;
 685
 686         if (fe->ops.i2c_gate_ctrl)
 687                 fe->ops.i2c_gate_ctrl(fe, 1);
 688
 689         /* wake from standby */
 690         ret = mxl5007t_write_reg(state, 0x01, 0x01);
 691         mxl_fail(ret);
 692
 693         if (fe->ops.i2c_gate_ctrl)
 694                 fe->ops.i2c_gate_ctrl(fe, 0);
 695
 696         return ret;
 697 }
 698
 699 static int mxl5007t_sleep(struct dvb_frontend *fe)
 700 {
 701         struct mxl5007t_state *state = fe->tuner_priv;
 702         int ret;
 703
 704         if (fe->ops.i2c_gate_ctrl)
 705                 fe->ops.i2c_gate_ctrl(fe, 1);
 706
 707         /* enter standby mode */
 708         ret = mxl5007t_write_reg(state, 0x01, 0x00);
 709         mxl_fail(ret);
 710         ret = mxl5007t_write_reg(state, 0x0f, 0x00);
 711         mxl_fail(ret);
 712
 713         if (fe->ops.i2c_gate_ctrl)
 714                 fe->ops.i2c_gate_ctrl(fe, 0);
 715
 716         return ret;
 717 }
 718
 719 /* ------------------------------------------------------------------------- */
 720
 721 static int mxl5007t_get_frequency(struct dvb_frontend *fe, u32 *frequency)
 722 {
 723         struct mxl5007t_state *state = fe->tuner_priv;
 724         *frequency = state->frequency;
 725         return 0;
 726 }
 727
 728 static int mxl5007t_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
 729 {
 730         struct mxl5007t_state *state = fe->tuner_priv;
 731         *bandwidth = state->bandwidth;
 732         return 0;
 733 }
 734
 735 static int mxl5007t_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
 736 {
 737         struct mxl5007t_state *state = fe->tuner_priv;
 738
 739         *frequency = 0;
 740
 741         switch (state->if_freq) {
 742         case MxL_IF_4_MHZ:
 743                 *frequency = 4000000;
 744                 break;
 745         case MxL_IF_4_5_MHZ:
 746                 *frequency = 4500000;
 747                 break;
 748         case MxL_IF_4_57_MHZ:
 749                 *frequency = 4570000;
 750                 break;
 751         case MxL_IF_5_MHZ:
 752                 *frequency = 5000000;
 753                 break;
 754         case MxL_IF_5_38_MHZ:
 755                 *frequency = 5380000;
 756                 break;
 757         case MxL_IF_6_MHZ:
 758                 *frequency = 6000000;
 759                 break;
 760         case MxL_IF_6_28_MHZ:
 761                 *frequency = 6280000;
 762                 break;
 763         case MxL_IF_9_1915_MHZ:
 764                 *frequency = 9191500;
 765                 break;
 766         case MxL_IF_35_25_MHZ:
 767                 *frequency = 35250000;
 768                 break;
 769         case MxL_IF_36_15_MHZ:
 770                 *frequency = 36150000;
 771                 break;
 772         case MxL_IF_44_MHZ:
 773                 *frequency = 44000000;
 774                 break;
 775         }
 776         return 0;
 777 }
 778
 779 static void mxl5007t_release(struct dvb_frontend *fe)
 780 {
 781         struct mxl5007t_state *state = fe->tuner_priv;
 782
 783         mutex_lock(&mxl5007t_list_mutex);
 784
 785         if (state)
 786                 hybrid_tuner_release_state(state);
 787
 788         mutex_unlock(&mxl5007t_list_mutex);
 789
 790         fe->tuner_priv = NULL;
 791 }
 792
 793 /* ------------------------------------------------------------------------- */
 794
 795 static const struct dvb_tuner_ops mxl5007t_tuner_ops = {
 796         .info = {
 797                 .name = "MaxLinear MxL5007T",
 798         },
 799         .init              = mxl5007t_init,
 800         .sleep             = mxl5007t_sleep,
 801         .set_params        = mxl5007t_set_params,
 802         .get_status        = mxl5007t_get_status,
 803         .get_frequency     = mxl5007t_get_frequency,
 804         .get_bandwidth     = mxl5007t_get_bandwidth,
 805         .release           = mxl5007t_release,
 806         .get_if_frequency  = mxl5007t_get_if_frequency,
 807 };
 808
 809 static int mxl5007t_get_chip_id(struct mxl5007t_state *state)
 810 {
 811         char *name;
 812         int ret;
 813         u8 id;
 814
 815         ret = mxl5007t_read_reg(state, 0xd9, &id);
 816         if (mxl_fail(ret))
 817                 goto fail;
 818
 819         switch (id) {
 820         case MxL_5007_V1_F1:
 821                 name = "MxL5007.v1.f1";
 822                 break;
 823         case MxL_5007_V1_F2:
 824                 name = "MxL5007.v1.f2";
 825                 break;
 826         case MxL_5007_V2_100_F1:
 827                 name = "MxL5007.v2.100.f1";
 828                 break;
 829         case MxL_5007_V2_100_F2:
 830                 name = "MxL5007.v2.100.f2";
 831                 break;
 832         case MxL_5007_V2_200_F1:
 833                 name = "MxL5007.v2.200.f1";
 834                 break;
 835         case MxL_5007_V2_200_F2:
 836                 name = "MxL5007.v2.200.f2";
 837                 break;
 838         case MxL_5007_V4:
 839                 name = "MxL5007T.v4";
 840                 break;
 841         default:
 842                 name = "MxL5007T";
 843                 printk(KERN_WARNING "%s: unknown rev (%02x)\n", __func__, id);
 844                 id = MxL_UNKNOWN_ID;
 845         }
 846         state->chip_id = id;
 847         mxl_info("%s detected @ %d-%04x", name,
 848                  i2c_adapter_id(state->i2c_props.adap),
 849                  state->i2c_props.addr);
 850         return 0;
 851 fail:
 852         mxl_warn("unable to identify device @ %d-%04x",
 853                  i2c_adapter_id(state->i2c_props.adap),
 854                  state->i2c_props.addr);
 855
 856         state->chip_id = MxL_UNKNOWN_ID;
 857         return ret;
 858 }
 859
 860 struct dvb_frontend *mxl5007t_attach(struct dvb_frontend *fe,
 861                                      struct i2c_adapter *i2c, u8 addr,
 862                                      struct mxl5007t_config *cfg)
 863 {
 864         struct mxl5007t_state *state = NULL;
 865         int instance, ret;
 866
 867         mutex_lock(&mxl5007t_list_mutex);
 868         instance = hybrid_tuner_request_state(struct mxl5007t_state, state,
 869                                               hybrid_tuner_instance_list,
 870                                               i2c, addr, "mxl5007t");
 871         switch (instance) {
 872         case 0:
 873                 goto fail;
 874         case 1:
 875                 /* new tuner instance */
 876                 state->config = cfg;
 877
 878                 mutex_init(&state->lock);
 879
 880                 if (fe->ops.i2c_gate_ctrl)
 881                         fe->ops.i2c_gate_ctrl(fe, 1);
 882
 883                 ret = mxl5007t_get_chip_id(state);
 884
 885                 if (fe->ops.i2c_gate_ctrl)
 886                         fe->ops.i2c_gate_ctrl(fe, 0);
 887
 888                 /* check return value of mxl5007t_get_chip_id */
 889                 if (mxl_fail(ret))
 890                         goto fail;
 891                 break;
 892         default:
 893                 /* existing tuner instance */
 894                 break;
 895         }
 896
 897         if (fe->ops.i2c_gate_ctrl)
 898                 fe->ops.i2c_gate_ctrl(fe, 1);
 899
 900         ret = mxl5007t_soft_reset(state);
 901
 902         if (fe->ops.i2c_gate_ctrl)
 903                 fe->ops.i2c_gate_ctrl(fe, 0);
 904
 905         if (mxl_fail(ret))
 906                 goto fail;
 907
 908         if (fe->ops.i2c_gate_ctrl)
 909                 fe->ops.i2c_gate_ctrl(fe, 1);
 910
 911         ret = mxl5007t_write_reg(state, 0x04,
 912                 state->config->loop_thru_enable);
 913
 914         if (fe->ops.i2c_gate_ctrl)
 915                 fe->ops.i2c_gate_ctrl(fe, 0);
 916
 917         if (mxl_fail(ret))
 918                 goto fail;
 919
 920         fe->tuner_priv = state;
 921
 922         mutex_unlock(&mxl5007t_list_mutex);
 923
 924         memcpy(&fe->ops.tuner_ops, &mxl5007t_tuner_ops,
 925                sizeof(struct dvb_tuner_ops));
 926
 927         return fe;
 928 fail:
 929         mutex_unlock(&mxl5007t_list_mutex);
 930
 931         mxl5007t_release(fe);
 932         return NULL;
 933 }
 934 EXPORT_SYMBOL_GPL(mxl5007t_attach);
 935 MODULE_DESCRIPTION("MaxLinear MxL5007T Silicon IC tuner driver");
 936 MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
 937 MODULE_LICENSE("GPL");
 938 MODULE_VERSION("0.2");