drivers/net/wireless/zd1211rw/zd_rf_al7230b.c

   1 /* ZD1211 USB-WLAN driver for Linux
   2  *
   3  * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
   4  * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.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, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <linux/kernel.h>
  21
  22 #include "zd_rf.h"
  23 #include "zd_usb.h"
  24 #include "zd_chip.h"
  25
  26 static const u32 chan_rv[][2] = {
  27         RF_CHANNEL( 1) = { 0x09ec00, 0x8cccc8 },
  28         RF_CHANNEL( 2) = { 0x09ec00, 0x8cccd8 },
  29         RF_CHANNEL( 3) = { 0x09ec00, 0x8cccc0 },
  30         RF_CHANNEL( 4) = { 0x09ec00, 0x8cccd0 },
  31         RF_CHANNEL( 5) = { 0x05ec00, 0x8cccc8 },
  32         RF_CHANNEL( 6) = { 0x05ec00, 0x8cccd8 },
  33         RF_CHANNEL( 7) = { 0x05ec00, 0x8cccc0 },
  34         RF_CHANNEL( 8) = { 0x05ec00, 0x8cccd0 },
  35         RF_CHANNEL( 9) = { 0x0dec00, 0x8cccc8 },
  36         RF_CHANNEL(10) = { 0x0dec00, 0x8cccd8 },
  37         RF_CHANNEL(11) = { 0x0dec00, 0x8cccc0 },
  38         RF_CHANNEL(12) = { 0x0dec00, 0x8cccd0 },
  39         RF_CHANNEL(13) = { 0x03ec00, 0x8cccc8 },
  40         RF_CHANNEL(14) = { 0x03ec00, 0x866660 },
  41 };
  42
  43 static const u32 std_rv[] = {
  44         0x4ff821,
  45         0xc5fbfc,
  46         0x21ebfe,
  47         0xafd401, /* freq shift 0xaad401 */
  48         0x6cf56a,
  49         0xe04073,
  50         0x193d76,
  51         0x9dd844,
  52         0x500007,
  53         0xd8c010,
  54 };
  55
  56 static const u32 rv_init1[] = {
  57         0x3c9000,
  58         0xbfffff,
  59         0x700000,
  60         0xf15d58,
  61 };
  62
  63 static const u32 rv_init2[] = {
  64         0xf15d59,
  65         0xf15d5c,
  66         0xf15d58,
  67 };
  68
  69 static const struct zd_ioreq16 ioreqs_sw[] = {
  70         { ZD_CR128, 0x14 }, { ZD_CR129, 0x12 }, { ZD_CR130, 0x10 },
  71         { ZD_CR38,  0x38 }, { ZD_CR136, 0xdf },
  72 };
  73
  74 static int zd1211b_al7230b_finalize(struct zd_chip *chip)
  75 {
  76         int r;
  77         static const struct zd_ioreq16 ioreqs[] = {
  78                 { ZD_CR80,  0x30 }, { ZD_CR81,  0x30 }, { ZD_CR79,  0x58 },
  79                 { ZD_CR12,  0xf0 }, { ZD_CR77,  0x1b }, { ZD_CR78,  0x58 },
  80                 { ZD_CR203, 0x04 },
  81                 { },
  82                 { ZD_CR240, 0x80 },
  83         };
  84
  85         r = zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
  86         if (r)
  87                 return r;
  88
  89         if (chip->new_phy_layout) {
  90                 /* antenna selection? */
  91                 r = zd_iowrite16_locked(chip, 0xe5, ZD_CR9);
  92                 if (r)
  93                         return r;
  94         }
  95
  96         return zd_iowrite16_locked(chip, 0x04, ZD_CR203);
  97 }
  98
  99 static int zd1211_al7230b_init_hw(struct zd_rf *rf)
 100 {
 101         int r;
 102         struct zd_chip *chip = zd_rf_to_chip(rf);
 103
 104         /* All of these writes are identical to AL2230 unless otherwise
 105          * specified */
 106         static const struct zd_ioreq16 ioreqs_1[] = {
 107                 /* This one is 7230-specific, and happens before the rest */
 108                 { ZD_CR240,  0x57 },
 109                 { },
 110
 111                 { ZD_CR15,   0x20 }, { ZD_CR23,   0x40 }, { ZD_CR24,  0x20 },
 112                 { ZD_CR26,   0x11 }, { ZD_CR28,   0x3e }, { ZD_CR29,  0x00 },
 113                 { ZD_CR44,   0x33 },
 114                 /* This value is different for 7230 (was: 0x2a) */
 115                 { ZD_CR106,  0x22 },
 116                 { ZD_CR107,  0x1a }, { ZD_CR109,  0x09 }, { ZD_CR110,  0x27 },
 117                 { ZD_CR111,  0x2b }, { ZD_CR112,  0x2b }, { ZD_CR119,  0x0a },
 118                 /* This happened further down in AL2230,
 119                  * and the value changed (was: 0xe0) */
 120                 { ZD_CR122,  0xfc },
 121                 { ZD_CR10,   0x89 },
 122                 /* for newest (3rd cut) AL2300 */
 123                 { ZD_CR17,   0x28 },
 124                 { ZD_CR26,   0x93 }, { ZD_CR34,   0x30 },
 125                 /* for newest (3rd cut) AL2300 */
 126                 { ZD_CR35,   0x3e },
 127                 { ZD_CR41,   0x24 }, { ZD_CR44,   0x32 },
 128                 /* for newest (3rd cut) AL2300 */
 129                 { ZD_CR46,   0x96 },
 130                 { ZD_CR47,   0x1e }, { ZD_CR79,   0x58 }, { ZD_CR80,  0x30 },
 131                 { ZD_CR81,   0x30 }, { ZD_CR87,   0x0a }, { ZD_CR89,  0x04 },
 132                 { ZD_CR92,   0x0a }, { ZD_CR99,   0x28 },
 133                 /* This value is different for 7230 (was: 0x00) */
 134                 { ZD_CR100,  0x02 },
 135                 { ZD_CR101,  0x13 }, { ZD_CR102,  0x27 },
 136                 /* This value is different for 7230 (was: 0x24) */
 137                 { ZD_CR106,  0x22 },
 138                 /* This value is different for 7230 (was: 0x2a) */
 139                 { ZD_CR107,  0x3f },
 140                 { ZD_CR109,  0x09 },
 141                 /* This value is different for 7230 (was: 0x13) */
 142                 { ZD_CR110,  0x1f },
 143                 { ZD_CR111,  0x1f }, { ZD_CR112,  0x1f }, { ZD_CR113, 0x27 },
 144                 { ZD_CR114,  0x27 },
 145                 /* for newest (3rd cut) AL2300 */
 146                 { ZD_CR115,  0x24 },
 147                 /* This value is different for 7230 (was: 0x24) */
 148                 { ZD_CR116,  0x3f },
 149                 /* This value is different for 7230 (was: 0xf4) */
 150                 { ZD_CR117,  0xfa },
 151                 { ZD_CR118,  0xfc }, { ZD_CR119,  0x10 }, { ZD_CR120, 0x4f },
 152                 { ZD_CR121,  0x77 }, { ZD_CR137,  0x88 },
 153                 /* This one is 7230-specific */
 154                 { ZD_CR138,  0xa8 },
 155                 /* This value is different for 7230 (was: 0xff) */
 156                 { ZD_CR252,  0x34 },
 157                 /* This value is different for 7230 (was: 0xff) */
 158                 { ZD_CR253,  0x34 },
 159
 160                 /* PLL_OFF */
 161                 { ZD_CR251, 0x2f },
 162         };
 163
 164         static const struct zd_ioreq16 ioreqs_2[] = {
 165                 { ZD_CR251, 0x3f }, /* PLL_ON */
 166                 { ZD_CR128, 0x14 }, { ZD_CR129, 0x12 }, { ZD_CR130, 0x10 },
 167                 { ZD_CR38,  0x38 }, { ZD_CR136, 0xdf },
 168         };
 169
 170         r = zd_iowrite16a_locked(chip, ioreqs_1, ARRAY_SIZE(ioreqs_1));
 171         if (r)
 172                 return r;
 173
 174         r = zd_rfwritev_cr_locked(chip, chan_rv[0], ARRAY_SIZE(chan_rv[0]));
 175         if (r)
 176                 return r;
 177
 178         r = zd_rfwritev_cr_locked(chip, std_rv, ARRAY_SIZE(std_rv));
 179         if (r)
 180                 return r;
 181
 182         r = zd_rfwritev_cr_locked(chip, rv_init1, ARRAY_SIZE(rv_init1));
 183         if (r)
 184                 return r;
 185
 186         r = zd_iowrite16a_locked(chip, ioreqs_2, ARRAY_SIZE(ioreqs_2));
 187         if (r)
 188                 return r;
 189
 190         r = zd_rfwritev_cr_locked(chip, rv_init2, ARRAY_SIZE(rv_init2));
 191         if (r)
 192                 return r;
 193
 194         r = zd_iowrite16_locked(chip, 0x06, ZD_CR203);
 195         if (r)
 196                 return r;
 197         r = zd_iowrite16_locked(chip, 0x80, ZD_CR240);
 198         if (r)
 199                 return r;
 200
 201         return 0;
 202 }
 203
 204 static int zd1211b_al7230b_init_hw(struct zd_rf *rf)
 205 {
 206         int r;
 207         struct zd_chip *chip = zd_rf_to_chip(rf);
 208
 209         static const struct zd_ioreq16 ioreqs_1[] = {
 210                 { ZD_CR240, 0x57 }, { ZD_CR9,   0x9 },
 211                 { },
 212                 { ZD_CR10,  0x8b }, { ZD_CR15,  0x20 },
 213                 { ZD_CR17,  0x2B }, /* for newest (3rd cut) AL2230 */
 214                 { ZD_CR20,  0x10 }, /* 4N25->Stone Request */
 215                 { ZD_CR23,  0x40 }, { ZD_CR24,  0x20 }, { ZD_CR26,  0x93 },
 216                 { ZD_CR28,  0x3e }, { ZD_CR29,  0x00 },
 217                 { ZD_CR33,  0x28 }, /* 5613 */
 218                 { ZD_CR34,  0x30 },
 219                 { ZD_CR35,  0x3e }, /* for newest (3rd cut) AL2230 */
 220                 { ZD_CR41,  0x24 }, { ZD_CR44,  0x32 },
 221                 { ZD_CR46,  0x99 }, /* for newest (3rd cut) AL2230 */
 222                 { ZD_CR47,  0x1e },
 223
 224                 /* ZD1215 5610 */
 225                 { ZD_CR48,  0x00 }, { ZD_CR49,  0x00 }, { ZD_CR51,  0x01 },
 226                 { ZD_CR52,  0x80 }, { ZD_CR53,  0x7e }, { ZD_CR65,  0x00 },
 227                 { ZD_CR66,  0x00 }, { ZD_CR67,  0x00 }, { ZD_CR68,  0x00 },
 228                 { ZD_CR69,  0x28 },
 229
 230                 { ZD_CR79,  0x58 }, { ZD_CR80,  0x30 }, { ZD_CR81,  0x30 },
 231                 { ZD_CR87,  0x0A }, { ZD_CR89,  0x04 },
 232                 { ZD_CR90,  0x58 }, /* 5112 */
 233                 { ZD_CR91,  0x00 }, /* 5613 */
 234                 { ZD_CR92,  0x0a },
 235                 { ZD_CR98,  0x8d }, /* 4804, for 1212 new algorithm */
 236                 { ZD_CR99,  0x00 }, { ZD_CR100, 0x02 }, { ZD_CR101, 0x13 },
 237                 { ZD_CR102, 0x27 },
 238                 { ZD_CR106, 0x20 }, /* change to 0x24 for AL7230B */
 239                 { ZD_CR109, 0x13 }, /* 4804, for 1212 new algorithm */
 240                 { ZD_CR112, 0x1f },
 241         };
 242
 243         static const struct zd_ioreq16 ioreqs_new_phy[] = {
 244                 { ZD_CR107, 0x28 },
 245                 { ZD_CR110, 0x1f }, /* 5127, 0x13->0x1f */
 246                 { ZD_CR111, 0x1f }, /* 0x13 to 0x1f for AL7230B */
 247                 { ZD_CR116, 0x2a }, { ZD_CR118, 0xfa }, { ZD_CR119, 0x12 },
 248                 { ZD_CR121, 0x6c }, /* 5613 */
 249         };
 250
 251         static const struct zd_ioreq16 ioreqs_old_phy[] = {
 252                 { ZD_CR107, 0x24 },
 253                 { ZD_CR110, 0x13 }, /* 5127, 0x13->0x1f */
 254                 { ZD_CR111, 0x13 }, /* 0x13 to 0x1f for AL7230B */
 255                 { ZD_CR116, 0x24 }, { ZD_CR118, 0xfc }, { ZD_CR119, 0x11 },
 256                 { ZD_CR121, 0x6a }, /* 5613 */
 257         };
 258
 259         static const struct zd_ioreq16 ioreqs_2[] = {
 260                 { ZD_CR113, 0x27 }, { ZD_CR114, 0x27 }, { ZD_CR115, 0x24 },
 261                 { ZD_CR117, 0xfa }, { ZD_CR120, 0x4f },
 262                 { ZD_CR122, 0xfc }, /* E0->FCh at 4901 */
 263                 { ZD_CR123, 0x57 }, /* 5613 */
 264                 { ZD_CR125, 0xad }, /* 4804, for 1212 new algorithm */
 265                 { ZD_CR126, 0x6c }, /* 5613 */
 266                 { ZD_CR127, 0x03 }, /* 4804, for 1212 new algorithm */
 267                 { ZD_CR130, 0x10 },
 268                 { ZD_CR131, 0x00 }, /* 5112 */
 269                 { ZD_CR137, 0x50 }, /* 5613 */
 270                 { ZD_CR138, 0xa8 }, /* 5112 */
 271                 { ZD_CR144, 0xac }, /* 5613 */
 272                 { ZD_CR148, 0x40 }, /* 5112 */
 273                 { ZD_CR149, 0x40 }, /* 4O07, 50->40 */
 274                 { ZD_CR150, 0x1a }, /* 5112, 0C->1A */
 275                 { ZD_CR252, 0x34 }, { ZD_CR253, 0x34 },
 276                 { ZD_CR251, 0x2f }, /* PLL_OFF */
 277         };
 278
 279         static const struct zd_ioreq16 ioreqs_3[] = {
 280                 { ZD_CR251, 0x7f }, /* PLL_ON */
 281                 { ZD_CR128, 0x14 }, { ZD_CR129, 0x12 }, { ZD_CR130, 0x10 },
 282                 { ZD_CR38,  0x38 }, { ZD_CR136, 0xdf },
 283         };
 284
 285         r = zd_iowrite16a_locked(chip, ioreqs_1, ARRAY_SIZE(ioreqs_1));
 286         if (r)
 287                 return r;
 288
 289         if (chip->new_phy_layout)
 290                 r = zd_iowrite16a_locked(chip, ioreqs_new_phy,
 291                         ARRAY_SIZE(ioreqs_new_phy));
 292         else
 293                 r = zd_iowrite16a_locked(chip, ioreqs_old_phy,
 294                         ARRAY_SIZE(ioreqs_old_phy));
 295         if (r)
 296                 return r;
 297
 298         r = zd_iowrite16a_locked(chip, ioreqs_2, ARRAY_SIZE(ioreqs_2));
 299         if (r)
 300                 return r;
 301
 302         r = zd_rfwritev_cr_locked(chip, chan_rv[0], ARRAY_SIZE(chan_rv[0]));
 303         if (r)
 304                 return r;
 305
 306         r = zd_rfwritev_cr_locked(chip, std_rv, ARRAY_SIZE(std_rv));
 307         if (r)
 308                 return r;
 309
 310         r = zd_rfwritev_cr_locked(chip, rv_init1, ARRAY_SIZE(rv_init1));
 311         if (r)
 312                 return r;
 313
 314         r = zd_iowrite16a_locked(chip, ioreqs_3, ARRAY_SIZE(ioreqs_3));
 315         if (r)
 316                 return r;
 317
 318         r = zd_rfwritev_cr_locked(chip, rv_init2, ARRAY_SIZE(rv_init2));
 319         if (r)
 320                 return r;
 321
 322         return zd1211b_al7230b_finalize(chip);
 323 }
 324
 325 static int zd1211_al7230b_set_channel(struct zd_rf *rf, u8 channel)
 326 {
 327         int r;
 328         const u32 *rv = chan_rv[channel-1];
 329         struct zd_chip *chip = zd_rf_to_chip(rf);
 330
 331         static const struct zd_ioreq16 ioreqs[] = {
 332                 /* PLL_ON */
 333                 { ZD_CR251, 0x3f },
 334                 { ZD_CR203, 0x06 }, { ZD_CR240, 0x08 },
 335         };
 336
 337         r = zd_iowrite16_locked(chip, 0x57, ZD_CR240);
 338         if (r)
 339                 return r;
 340
 341         /* PLL_OFF */
 342         r = zd_iowrite16_locked(chip, 0x2f, ZD_CR251);
 343         if (r)
 344                 return r;
 345
 346         r = zd_rfwritev_cr_locked(chip, std_rv, ARRAY_SIZE(std_rv));
 347         if (r)
 348                 return r;
 349
 350         r = zd_rfwrite_cr_locked(chip, 0x3c9000);
 351         if (r)
 352                 return r;
 353         r = zd_rfwrite_cr_locked(chip, 0xf15d58);
 354         if (r)
 355                 return r;
 356
 357         r = zd_iowrite16a_locked(chip, ioreqs_sw, ARRAY_SIZE(ioreqs_sw));
 358         if (r)
 359                 return r;
 360
 361         r = zd_rfwritev_cr_locked(chip, rv, 2);
 362         if (r)
 363                 return r;
 364
 365         r = zd_rfwrite_cr_locked(chip, 0x3c9000);
 366         if (r)
 367                 return r;
 368
 369         return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
 370 }
 371
 372 static int zd1211b_al7230b_set_channel(struct zd_rf *rf, u8 channel)
 373 {
 374         int r;
 375         const u32 *rv = chan_rv[channel-1];
 376         struct zd_chip *chip = zd_rf_to_chip(rf);
 377
 378         r = zd_iowrite16_locked(chip, 0x57, ZD_CR240);
 379         if (r)
 380                 return r;
 381         r = zd_iowrite16_locked(chip, 0xe4, ZD_CR9);
 382         if (r)
 383                 return r;
 384
 385         /* PLL_OFF */
 386         r = zd_iowrite16_locked(chip, 0x2f, ZD_CR251);
 387         if (r)
 388                 return r;
 389         r = zd_rfwritev_cr_locked(chip, std_rv, ARRAY_SIZE(std_rv));
 390         if (r)
 391                 return r;
 392
 393         r = zd_rfwrite_cr_locked(chip, 0x3c9000);
 394         if (r)
 395                 return r;
 396         r = zd_rfwrite_cr_locked(chip, 0xf15d58);
 397         if (r)
 398                 return r;
 399
 400         r = zd_iowrite16a_locked(chip, ioreqs_sw, ARRAY_SIZE(ioreqs_sw));
 401         if (r)
 402                 return r;
 403
 404         r = zd_rfwritev_cr_locked(chip, rv, 2);
 405         if (r)
 406                 return r;
 407
 408         r = zd_rfwrite_cr_locked(chip, 0x3c9000);
 409         if (r)
 410                 return r;
 411
 412         r = zd_iowrite16_locked(chip, 0x7f, ZD_CR251);
 413         if (r)
 414                 return r;
 415
 416         return zd1211b_al7230b_finalize(chip);
 417 }
 418
 419 static int zd1211_al7230b_switch_radio_on(struct zd_rf *rf)
 420 {
 421         struct zd_chip *chip = zd_rf_to_chip(rf);
 422         static const struct zd_ioreq16 ioreqs[] = {
 423                 { ZD_CR11,  0x00 },
 424                 { ZD_CR251, 0x3f },
 425         };
 426
 427         return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
 428 }
 429
 430 static int zd1211b_al7230b_switch_radio_on(struct zd_rf *rf)
 431 {
 432         struct zd_chip *chip = zd_rf_to_chip(rf);
 433         static const struct zd_ioreq16 ioreqs[] = {
 434                 { ZD_CR11,  0x00 },
 435                 { ZD_CR251, 0x7f },
 436         };
 437
 438         return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
 439 }
 440
 441 static int al7230b_switch_radio_off(struct zd_rf *rf)
 442 {
 443         struct zd_chip *chip = zd_rf_to_chip(rf);
 444         static const struct zd_ioreq16 ioreqs[] = {
 445                 { ZD_CR11,  0x04 },
 446                 { ZD_CR251, 0x2f },
 447         };
 448
 449         return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
 450 }
 451
 452 /* ZD1211B+AL7230B 6m band edge patching differs slightly from other
 453  * configurations */
 454 static int zd1211b_al7230b_patch_6m(struct zd_rf *rf, u8 channel)
 455 {
 456         struct zd_chip *chip = zd_rf_to_chip(rf);
 457         struct zd_ioreq16 ioreqs[] = {
 458                 { ZD_CR128, 0x14 }, { ZD_CR129, 0x12 },
 459         };
 460
 461         /* FIXME: Channel 11 is not the edge for all regulatory domains. */
 462         if (channel == 1) {
 463                 ioreqs[0].value = 0x0e;
 464                 ioreqs[1].value = 0x10;
 465         } else if (channel == 11) {
 466                 ioreqs[0].value = 0x10;
 467                 ioreqs[1].value = 0x10;
 468         }
 469
 470         dev_dbg_f(zd_chip_dev(chip), "patching for channel %d\n", channel);
 471         return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
 472 }
 473
 474 int zd_rf_init_al7230b(struct zd_rf *rf)
 475 {
 476         struct zd_chip *chip = zd_rf_to_chip(rf);
 477
 478         if (zd_chip_is_zd1211b(chip)) {
 479                 rf->init_hw = zd1211b_al7230b_init_hw;
 480                 rf->switch_radio_on = zd1211b_al7230b_switch_radio_on;
 481                 rf->set_channel = zd1211b_al7230b_set_channel;
 482                 rf->patch_6m_band_edge = zd1211b_al7230b_patch_6m;
 483         } else {
 484                 rf->init_hw = zd1211_al7230b_init_hw;
 485                 rf->switch_radio_on = zd1211_al7230b_switch_radio_on;
 486                 rf->set_channel = zd1211_al7230b_set_channel;
 487                 rf->patch_6m_band_edge = zd_rf_generic_patch_6m;
 488                 rf->patch_cck_gain = 1;
 489         }
 490
 491         rf->switch_radio_off = al7230b_switch_radio_off;
 492
 493         return 0;
 494 }