sound/pci/ctxfi/ctdaio.c

   1 /**
   2  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
   3  *
   4  * This source file is released under GPL v2 license (no other versions).
   5  * See the COPYING file included in the main directory of this source
   6  * distribution for the license terms and conditions.
   7  *
   8  * @File        ctdaio.c
   9  *
  10  * @Brief
  11  * This file contains the implementation of Digital Audio Input Output
  12  * resource management object.
  13  *
  14  * @Author      Liu Chun
  15  * @Date        May 23 2008
  16  *
  17  */
  18
  19 #include "ctdaio.h"
  20 #include "cthardware.h"
  21 #include "ctimap.h"
  22 #include <linux/slab.h>
  23 #include <linux/kernel.h>
  24
  25 #define DAIO_OUT_MAX            SPDIFOO
  26
  27 struct daio_usage {
  28         unsigned short data;
  29 };
  30
  31 struct daio_rsc_idx {
  32         unsigned short left;
  33         unsigned short right;
  34 };
  35
  36 static struct daio_rsc_idx idx_20k1[NUM_DAIOTYP] = {
  37         [LINEO1] = {.left = 0x00, .right = 0x01},
  38         [LINEO2] = {.left = 0x18, .right = 0x19},
  39         [LINEO3] = {.left = 0x08, .right = 0x09},
  40         [LINEO4] = {.left = 0x10, .right = 0x11},
  41         [LINEIM] = {.left = 0x1b5, .right = 0x1bd},
  42         [SPDIFOO] = {.left = 0x20, .right = 0x21},
  43         [SPDIFIO] = {.left = 0x15, .right = 0x1d},
  44         [SPDIFI1] = {.left = 0x95, .right = 0x9d},
  45 };
  46
  47 static struct daio_rsc_idx idx_20k2[NUM_DAIOTYP] = {
  48         [LINEO1] = {.left = 0x40, .right = 0x41},
  49         [LINEO2] = {.left = 0x60, .right = 0x61},
  50         [LINEO3] = {.left = 0x50, .right = 0x51},
  51         [LINEO4] = {.left = 0x70, .right = 0x71},
  52         [LINEIM] = {.left = 0x45, .right = 0xc5},
  53         [MIC]    = {.left = 0x55, .right = 0xd5},
  54         [SPDIFOO] = {.left = 0x00, .right = 0x01},
  55         [SPDIFIO] = {.left = 0x05, .right = 0x85},
  56 };
  57
  58 static int daio_master(struct rsc *rsc)
  59 {
  60         /* Actually, this is not the resource index of DAIO.
  61          * For DAO, it is the input mapper index. And, for DAI,
  62          * it is the output time-slot index. */
  63         return rsc->conj = rsc->idx;
  64 }
  65
  66 static int daio_index(const struct rsc *rsc)
  67 {
  68         return rsc->conj;
  69 }
  70
  71 static int daio_out_next_conj(struct rsc *rsc)
  72 {
  73         return rsc->conj += 2;
  74 }
  75
  76 static int daio_in_next_conj_20k1(struct rsc *rsc)
  77 {
  78         return rsc->conj += 0x200;
  79 }
  80
  81 static int daio_in_next_conj_20k2(struct rsc *rsc)
  82 {
  83         return rsc->conj += 0x100;
  84 }
  85
  86 static const struct rsc_ops daio_out_rsc_ops = {
  87         .master         = daio_master,
  88         .next_conj      = daio_out_next_conj,
  89         .index          = daio_index,
  90         .output_slot    = NULL,
  91 };
  92
  93 static const struct rsc_ops daio_in_rsc_ops_20k1 = {
  94         .master         = daio_master,
  95         .next_conj      = daio_in_next_conj_20k1,
  96         .index          = NULL,
  97         .output_slot    = daio_index,
  98 };
  99
 100 static const struct rsc_ops daio_in_rsc_ops_20k2 = {
 101         .master         = daio_master,
 102         .next_conj      = daio_in_next_conj_20k2,
 103         .index          = NULL,
 104         .output_slot    = daio_index,
 105 };
 106
 107 static unsigned int daio_device_index(enum DAIOTYP type, struct hw *hw)
 108 {
 109         switch (hw->chip_type) {
 110         case ATC20K1:
 111                 switch (type) {
 112                 case SPDIFOO:   return 0;
 113                 case SPDIFIO:   return 0;
 114                 case SPDIFI1:   return 1;
 115                 case LINEO1:    return 4;
 116                 case LINEO2:    return 7;
 117                 case LINEO3:    return 5;
 118                 case LINEO4:    return 6;
 119                 case LINEIM:    return 7;
 120                 default:        return -EINVAL;
 121                 }
 122         case ATC20K2:
 123                 switch (type) {
 124                 case SPDIFOO:   return 0;
 125                 case SPDIFIO:   return 0;
 126                 case LINEO1:    return 4;
 127                 case LINEO2:    return 7;
 128                 case LINEO3:    return 5;
 129                 case LINEO4:    return 6;
 130                 case LINEIM:    return 4;
 131                 case MIC:       return 5;
 132                 default:        return -EINVAL;
 133                 }
 134         default:
 135                 return -EINVAL;
 136         }
 137 }
 138
 139 static int dao_rsc_reinit(struct dao *dao, const struct dao_desc *desc);
 140
 141 static int dao_spdif_get_spos(struct dao *dao, unsigned int *spos)
 142 {
 143         dao->hw->dao_get_spos(dao->ctrl_blk, spos);
 144         return 0;
 145 }
 146
 147 static int dao_spdif_set_spos(struct dao *dao, unsigned int spos)
 148 {
 149         dao->hw->dao_set_spos(dao->ctrl_blk, spos);
 150         return 0;
 151 }
 152
 153 static int dao_commit_write(struct dao *dao)
 154 {
 155         dao->hw->dao_commit_write(dao->hw,
 156                 daio_device_index(dao->daio.type, dao->hw), dao->ctrl_blk);
 157         return 0;
 158 }
 159
 160 static int dao_set_left_input(struct dao *dao, struct rsc *input)
 161 {
 162         struct imapper *entry;
 163         struct daio *daio = &dao->daio;
 164         int i;
 165
 166         entry = kzalloc((sizeof(*entry) * daio->rscl.msr), GFP_KERNEL);
 167         if (!entry)
 168                 return -ENOMEM;
 169
 170         dao->ops->clear_left_input(dao);
 171         /* Program master and conjugate resources */
 172         input->ops->master(input);
 173         daio->rscl.ops->master(&daio->rscl);
 174         for (i = 0; i < daio->rscl.msr; i++, entry++) {
 175                 entry->slot = input->ops->output_slot(input);
 176                 entry->user = entry->addr = daio->rscl.ops->index(&daio->rscl);
 177                 dao->mgr->imap_add(dao->mgr, entry);
 178                 dao->imappers[i] = entry;
 179
 180                 input->ops->next_conj(input);
 181                 daio->rscl.ops->next_conj(&daio->rscl);
 182         }
 183         input->ops->master(input);
 184         daio->rscl.ops->master(&daio->rscl);
 185
 186         return 0;
 187 }
 188
 189 static int dao_set_right_input(struct dao *dao, struct rsc *input)
 190 {
 191         struct imapper *entry;
 192         struct daio *daio = &dao->daio;
 193         int i;
 194
 195         entry = kzalloc((sizeof(*entry) * daio->rscr.msr), GFP_KERNEL);
 196         if (!entry)
 197                 return -ENOMEM;
 198
 199         dao->ops->clear_right_input(dao);
 200         /* Program master and conjugate resources */
 201         input->ops->master(input);
 202         daio->rscr.ops->master(&daio->rscr);
 203         for (i = 0; i < daio->rscr.msr; i++, entry++) {
 204                 entry->slot = input->ops->output_slot(input);
 205                 entry->user = entry->addr = daio->rscr.ops->index(&daio->rscr);
 206                 dao->mgr->imap_add(dao->mgr, entry);
 207                 dao->imappers[daio->rscl.msr + i] = entry;
 208
 209                 input->ops->next_conj(input);
 210                 daio->rscr.ops->next_conj(&daio->rscr);
 211         }
 212         input->ops->master(input);
 213         daio->rscr.ops->master(&daio->rscr);
 214
 215         return 0;
 216 }
 217
 218 static int dao_clear_left_input(struct dao *dao)
 219 {
 220         struct imapper *entry;
 221         struct daio *daio = &dao->daio;
 222         int i;
 223
 224         if (!dao->imappers[0])
 225                 return 0;
 226
 227         entry = dao->imappers[0];
 228         dao->mgr->imap_delete(dao->mgr, entry);
 229         /* Program conjugate resources */
 230         for (i = 1; i < daio->rscl.msr; i++) {
 231                 entry = dao->imappers[i];
 232                 dao->mgr->imap_delete(dao->mgr, entry);
 233                 dao->imappers[i] = NULL;
 234         }
 235
 236         kfree(dao->imappers[0]);
 237         dao->imappers[0] = NULL;
 238
 239         return 0;
 240 }
 241
 242 static int dao_clear_right_input(struct dao *dao)
 243 {
 244         struct imapper *entry;
 245         struct daio *daio = &dao->daio;
 246         int i;
 247
 248         if (!dao->imappers[daio->rscl.msr])
 249                 return 0;
 250
 251         entry = dao->imappers[daio->rscl.msr];
 252         dao->mgr->imap_delete(dao->mgr, entry);
 253         /* Program conjugate resources */
 254         for (i = 1; i < daio->rscr.msr; i++) {
 255                 entry = dao->imappers[daio->rscl.msr + i];
 256                 dao->mgr->imap_delete(dao->mgr, entry);
 257                 dao->imappers[daio->rscl.msr + i] = NULL;
 258         }
 259
 260         kfree(dao->imappers[daio->rscl.msr]);
 261         dao->imappers[daio->rscl.msr] = NULL;
 262
 263         return 0;
 264 }
 265
 266 static const struct dao_rsc_ops dao_ops = {
 267         .set_spos               = dao_spdif_set_spos,
 268         .commit_write           = dao_commit_write,
 269         .get_spos               = dao_spdif_get_spos,
 270         .reinit                 = dao_rsc_reinit,
 271         .set_left_input         = dao_set_left_input,
 272         .set_right_input        = dao_set_right_input,
 273         .clear_left_input       = dao_clear_left_input,
 274         .clear_right_input      = dao_clear_right_input,
 275 };
 276
 277 static int dai_set_srt_srcl(struct dai *dai, struct rsc *src)
 278 {
 279         src->ops->master(src);
 280         dai->hw->dai_srt_set_srcm(dai->ctrl_blk, src->ops->index(src));
 281         return 0;
 282 }
 283
 284 static int dai_set_srt_srcr(struct dai *dai, struct rsc *src)
 285 {
 286         src->ops->master(src);
 287         dai->hw->dai_srt_set_srco(dai->ctrl_blk, src->ops->index(src));
 288         return 0;
 289 }
 290
 291 static int dai_set_srt_msr(struct dai *dai, unsigned int msr)
 292 {
 293         unsigned int rsr;
 294
 295         for (rsr = 0; msr > 1; msr >>= 1)
 296                 rsr++;
 297
 298         dai->hw->dai_srt_set_rsr(dai->ctrl_blk, rsr);
 299         return 0;
 300 }
 301
 302 static int dai_set_enb_src(struct dai *dai, unsigned int enb)
 303 {
 304         dai->hw->dai_srt_set_ec(dai->ctrl_blk, enb);
 305         return 0;
 306 }
 307
 308 static int dai_set_enb_srt(struct dai *dai, unsigned int enb)
 309 {
 310         dai->hw->dai_srt_set_et(dai->ctrl_blk, enb);
 311         return 0;
 312 }
 313
 314 static int dai_commit_write(struct dai *dai)
 315 {
 316         dai->hw->dai_commit_write(dai->hw,
 317                 daio_device_index(dai->daio.type, dai->hw), dai->ctrl_blk);
 318         return 0;
 319 }
 320
 321 static const struct dai_rsc_ops dai_ops = {
 322         .set_srt_srcl           = dai_set_srt_srcl,
 323         .set_srt_srcr           = dai_set_srt_srcr,
 324         .set_srt_msr            = dai_set_srt_msr,
 325         .set_enb_src            = dai_set_enb_src,
 326         .set_enb_srt            = dai_set_enb_srt,
 327         .commit_write           = dai_commit_write,
 328 };
 329
 330 static int daio_rsc_init(struct daio *daio,
 331                          const struct daio_desc *desc,
 332                          struct hw *hw)
 333 {
 334         int err;
 335         unsigned int idx_l, idx_r;
 336
 337         switch (hw->chip_type) {
 338         case ATC20K1:
 339                 idx_l = idx_20k1[desc->type].left;
 340                 idx_r = idx_20k1[desc->type].right;
 341                 break;
 342         case ATC20K2:
 343                 idx_l = idx_20k2[desc->type].left;
 344                 idx_r = idx_20k2[desc->type].right;
 345                 break;
 346         default:
 347                 return -EINVAL;
 348         }
 349         err = rsc_init(&daio->rscl, idx_l, DAIO, desc->msr, hw);
 350         if (err)
 351                 return err;
 352
 353         err = rsc_init(&daio->rscr, idx_r, DAIO, desc->msr, hw);
 354         if (err)
 355                 goto error1;
 356
 357         /* Set daio->rscl/r->ops to daio specific ones */
 358         if (desc->type <= DAIO_OUT_MAX) {
 359                 daio->rscl.ops = daio->rscr.ops = &daio_out_rsc_ops;
 360         } else {
 361                 switch (hw->chip_type) {
 362                 case ATC20K1:
 363                         daio->rscl.ops = daio->rscr.ops = &daio_in_rsc_ops_20k1;
 364                         break;
 365                 case ATC20K2:
 366                         daio->rscl.ops = daio->rscr.ops = &daio_in_rsc_ops_20k2;
 367                         break;
 368                 default:
 369                         break;
 370                 }
 371         }
 372         daio->type = desc->type;
 373
 374         return 0;
 375
 376 error1:
 377         rsc_uninit(&daio->rscl);
 378         return err;
 379 }
 380
 381 static int daio_rsc_uninit(struct daio *daio)
 382 {
 383         rsc_uninit(&daio->rscl);
 384         rsc_uninit(&daio->rscr);
 385
 386         return 0;
 387 }
 388
 389 static int dao_rsc_init(struct dao *dao,
 390                         const struct daio_desc *desc,
 391                         struct daio_mgr *mgr)
 392 {
 393         struct hw *hw = mgr->mgr.hw;
 394         unsigned int conf;
 395         int err;
 396
 397         err = daio_rsc_init(&dao->daio, desc, mgr->mgr.hw);
 398         if (err)
 399                 return err;
 400
 401         dao->imappers = kzalloc(array3_size(sizeof(void *), desc->msr, 2),
 402                                 GFP_KERNEL);
 403         if (!dao->imappers) {
 404                 err = -ENOMEM;
 405                 goto error1;
 406         }
 407         dao->ops = &dao_ops;
 408         dao->mgr = mgr;
 409         dao->hw = hw;
 410         err = hw->dao_get_ctrl_blk(&dao->ctrl_blk);
 411         if (err)
 412                 goto error2;
 413
 414         hw->daio_mgr_dsb_dao(mgr->mgr.ctrl_blk,
 415                         daio_device_index(dao->daio.type, hw));
 416         hw->daio_mgr_commit_write(hw, mgr->mgr.ctrl_blk);
 417
 418         conf = (desc->msr & 0x7) | (desc->passthru << 3);
 419         hw->daio_mgr_dao_init(mgr->mgr.ctrl_blk,
 420                         daio_device_index(dao->daio.type, hw), conf);
 421         hw->daio_mgr_enb_dao(mgr->mgr.ctrl_blk,
 422                         daio_device_index(dao->daio.type, hw));
 423         hw->daio_mgr_commit_write(hw, mgr->mgr.ctrl_blk);
 424
 425         return 0;
 426
 427 error2:
 428         kfree(dao->imappers);
 429         dao->imappers = NULL;
 430 error1:
 431         daio_rsc_uninit(&dao->daio);
 432         return err;
 433 }
 434
 435 static int dao_rsc_uninit(struct dao *dao)
 436 {
 437         if (dao->imappers) {
 438                 if (dao->imappers[0])
 439                         dao_clear_left_input(dao);
 440
 441                 if (dao->imappers[dao->daio.rscl.msr])
 442                         dao_clear_right_input(dao);
 443
 444                 kfree(dao->imappers);
 445                 dao->imappers = NULL;
 446         }
 447         dao->hw->dao_put_ctrl_blk(dao->ctrl_blk);
 448         dao->hw = dao->ctrl_blk = NULL;
 449         daio_rsc_uninit(&dao->daio);
 450
 451         return 0;
 452 }
 453
 454 static int dao_rsc_reinit(struct dao *dao, const struct dao_desc *desc)
 455 {
 456         struct daio_mgr *mgr = dao->mgr;
 457         struct daio_desc dsc = {0};
 458
 459         dsc.type = dao->daio.type;
 460         dsc.msr = desc->msr;
 461         dsc.passthru = desc->passthru;
 462         dao_rsc_uninit(dao);
 463         return dao_rsc_init(dao, &dsc, mgr);
 464 }
 465
 466 static int dai_rsc_init(struct dai *dai,
 467                         const struct daio_desc *desc,
 468                         struct daio_mgr *mgr)
 469 {
 470         int err;
 471         struct hw *hw = mgr->mgr.hw;
 472         unsigned int rsr, msr;
 473
 474         err = daio_rsc_init(&dai->daio, desc, mgr->mgr.hw);
 475         if (err)
 476                 return err;
 477
 478         dai->ops = &dai_ops;
 479         dai->hw = mgr->mgr.hw;
 480         err = hw->dai_get_ctrl_blk(&dai->ctrl_blk);
 481         if (err)
 482                 goto error1;
 483
 484         for (rsr = 0, msr = desc->msr; msr > 1; msr >>= 1)
 485                 rsr++;
 486
 487         hw->dai_srt_set_rsr(dai->ctrl_blk, rsr);
 488         hw->dai_srt_set_drat(dai->ctrl_blk, 0);
 489         /* default to disabling control of a SRC */
 490         hw->dai_srt_set_ec(dai->ctrl_blk, 0);
 491         hw->dai_srt_set_et(dai->ctrl_blk, 0); /* default to disabling SRT */
 492         hw->dai_commit_write(hw,
 493                 daio_device_index(dai->daio.type, dai->hw), dai->ctrl_blk);
 494
 495         return 0;
 496
 497 error1:
 498         daio_rsc_uninit(&dai->daio);
 499         return err;
 500 }
 501
 502 static int dai_rsc_uninit(struct dai *dai)
 503 {
 504         dai->hw->dai_put_ctrl_blk(dai->ctrl_blk);
 505         dai->hw = dai->ctrl_blk = NULL;
 506         daio_rsc_uninit(&dai->daio);
 507         return 0;
 508 }
 509
 510 static int daio_mgr_get_rsc(struct rsc_mgr *mgr, enum DAIOTYP type)
 511 {
 512         if (((struct daio_usage *)mgr->rscs)->data & (0x1 << type))
 513                 return -ENOENT;
 514
 515         ((struct daio_usage *)mgr->rscs)->data |= (0x1 << type);
 516
 517         return 0;
 518 }
 519
 520 static int daio_mgr_put_rsc(struct rsc_mgr *mgr, enum DAIOTYP type)
 521 {
 522         ((struct daio_usage *)mgr->rscs)->data &= ~(0x1 << type);
 523
 524         return 0;
 525 }
 526
 527 static int get_daio_rsc(struct daio_mgr *mgr,
 528                         const struct daio_desc *desc,
 529                         struct daio **rdaio)
 530 {
 531         int err;
 532         unsigned long flags;
 533
 534         *rdaio = NULL;
 535
 536         /* Check whether there are sufficient daio resources to meet request. */
 537         spin_lock_irqsave(&mgr->mgr_lock, flags);
 538         err = daio_mgr_get_rsc(&mgr->mgr, desc->type);
 539         spin_unlock_irqrestore(&mgr->mgr_lock, flags);
 540         if (err) {
 541                 dev_err(mgr->card->dev,
 542                         "Can't meet DAIO resource request!\n");
 543                 return err;
 544         }
 545
 546         err = -ENOMEM;
 547         /* Allocate mem for daio resource */
 548         if (desc->type <= DAIO_OUT_MAX) {
 549                 struct dao *dao = kzalloc(sizeof(*dao), GFP_KERNEL);
 550                 if (!dao)
 551                         goto error;
 552
 553                 err = dao_rsc_init(dao, desc, mgr);
 554                 if (err) {
 555                         kfree(dao);
 556                         goto error;
 557                 }
 558
 559                 *rdaio = &dao->daio;
 560         } else {
 561                 struct dai *dai = kzalloc(sizeof(*dai), GFP_KERNEL);
 562                 if (!dai)
 563                         goto error;
 564
 565                 err = dai_rsc_init(dai, desc, mgr);
 566                 if (err) {
 567                         kfree(dai);
 568                         goto error;
 569                 }
 570
 571                 *rdaio = &dai->daio;
 572         }
 573
 574         mgr->daio_enable(mgr, *rdaio);
 575         mgr->commit_write(mgr);
 576
 577         return 0;
 578
 579 error:
 580         spin_lock_irqsave(&mgr->mgr_lock, flags);
 581         daio_mgr_put_rsc(&mgr->mgr, desc->type);
 582         spin_unlock_irqrestore(&mgr->mgr_lock, flags);
 583         return err;
 584 }
 585
 586 static int put_daio_rsc(struct daio_mgr *mgr, struct daio *daio)
 587 {
 588         unsigned long flags;
 589
 590         mgr->daio_disable(mgr, daio);
 591         mgr->commit_write(mgr);
 592
 593         spin_lock_irqsave(&mgr->mgr_lock, flags);
 594         daio_mgr_put_rsc(&mgr->mgr, daio->type);
 595         spin_unlock_irqrestore(&mgr->mgr_lock, flags);
 596
 597         if (daio->type <= DAIO_OUT_MAX) {
 598                 dao_rsc_uninit(container_of(daio, struct dao, daio));
 599                 kfree(container_of(daio, struct dao, daio));
 600         } else {
 601                 dai_rsc_uninit(container_of(daio, struct dai, daio));
 602                 kfree(container_of(daio, struct dai, daio));
 603         }
 604
 605         return 0;
 606 }
 607
 608 static int daio_mgr_enb_daio(struct daio_mgr *mgr, struct daio *daio)
 609 {
 610         struct hw *hw = mgr->mgr.hw;
 611
 612         if (DAIO_OUT_MAX >= daio->type) {
 613                 hw->daio_mgr_enb_dao(mgr->mgr.ctrl_blk,
 614                                 daio_device_index(daio->type, hw));
 615         } else {
 616                 hw->daio_mgr_enb_dai(mgr->mgr.ctrl_blk,
 617                                 daio_device_index(daio->type, hw));
 618         }
 619         return 0;
 620 }
 621
 622 static int daio_mgr_dsb_daio(struct daio_mgr *mgr, struct daio *daio)
 623 {
 624         struct hw *hw = mgr->mgr.hw;
 625
 626         if (DAIO_OUT_MAX >= daio->type) {
 627                 hw->daio_mgr_dsb_dao(mgr->mgr.ctrl_blk,
 628                                 daio_device_index(daio->type, hw));
 629         } else {
 630                 hw->daio_mgr_dsb_dai(mgr->mgr.ctrl_blk,
 631                                 daio_device_index(daio->type, hw));
 632         }
 633         return 0;
 634 }
 635
 636 static int daio_map_op(void *data, struct imapper *entry)
 637 {
 638         struct rsc_mgr *mgr = &((struct daio_mgr *)data)->mgr;
 639         struct hw *hw = mgr->hw;
 640
 641         hw->daio_mgr_set_imaparc(mgr->ctrl_blk, entry->slot);
 642         hw->daio_mgr_set_imapnxt(mgr->ctrl_blk, entry->next);
 643         hw->daio_mgr_set_imapaddr(mgr->ctrl_blk, entry->addr);
 644         hw->daio_mgr_commit_write(mgr->hw, mgr->ctrl_blk);
 645
 646         return 0;
 647 }
 648
 649 static int daio_imap_add(struct daio_mgr *mgr, struct imapper *entry)
 650 {
 651         unsigned long flags;
 652         int err;
 653
 654         spin_lock_irqsave(&mgr->imap_lock, flags);
 655         if (!entry->addr && mgr->init_imap_added) {
 656                 input_mapper_delete(&mgr->imappers, mgr->init_imap,
 657                                                         daio_map_op, mgr);
 658                 mgr->init_imap_added = 0;
 659         }
 660         err = input_mapper_add(&mgr->imappers, entry, daio_map_op, mgr);
 661         spin_unlock_irqrestore(&mgr->imap_lock, flags);
 662
 663         return err;
 664 }
 665
 666 static int daio_imap_delete(struct daio_mgr *mgr, struct imapper *entry)
 667 {
 668         unsigned long flags;
 669         int err;
 670
 671         spin_lock_irqsave(&mgr->imap_lock, flags);
 672         err = input_mapper_delete(&mgr->imappers, entry, daio_map_op, mgr);
 673         if (list_empty(&mgr->imappers)) {
 674                 input_mapper_add(&mgr->imappers, mgr->init_imap,
 675                                                         daio_map_op, mgr);
 676                 mgr->init_imap_added = 1;
 677         }
 678         spin_unlock_irqrestore(&mgr->imap_lock, flags);
 679
 680         return err;
 681 }
 682
 683 static int daio_mgr_commit_write(struct daio_mgr *mgr)
 684 {
 685         struct hw *hw = mgr->mgr.hw;
 686
 687         hw->daio_mgr_commit_write(hw, mgr->mgr.ctrl_blk);
 688         return 0;
 689 }
 690
 691 int daio_mgr_create(struct hw *hw, struct daio_mgr **rdaio_mgr)
 692 {
 693         int err, i;
 694         struct daio_mgr *daio_mgr;
 695         struct imapper *entry;
 696
 697         *rdaio_mgr = NULL;
 698         daio_mgr = kzalloc(sizeof(*daio_mgr), GFP_KERNEL);
 699         if (!daio_mgr)
 700                 return -ENOMEM;
 701
 702         err = rsc_mgr_init(&daio_mgr->mgr, DAIO, NUM_DAIOTYP, hw);
 703         if (err)
 704                 goto error1;
 705
 706         spin_lock_init(&daio_mgr->mgr_lock);
 707         spin_lock_init(&daio_mgr->imap_lock);
 708         INIT_LIST_HEAD(&daio_mgr->imappers);
 709         entry = kzalloc(sizeof(*entry), GFP_KERNEL);
 710         if (!entry) {
 711                 err = -ENOMEM;
 712                 goto error2;
 713         }
 714         entry->slot = entry->addr = entry->next = entry->user = 0;
 715         list_add(&entry->list, &daio_mgr->imappers);
 716         daio_mgr->init_imap = entry;
 717         daio_mgr->init_imap_added = 1;
 718
 719         daio_mgr->get_daio = get_daio_rsc;
 720         daio_mgr->put_daio = put_daio_rsc;
 721         daio_mgr->daio_enable = daio_mgr_enb_daio;
 722         daio_mgr->daio_disable = daio_mgr_dsb_daio;
 723         daio_mgr->imap_add = daio_imap_add;
 724         daio_mgr->imap_delete = daio_imap_delete;
 725         daio_mgr->commit_write = daio_mgr_commit_write;
 726         daio_mgr->card = hw->card;
 727
 728         for (i = 0; i < 8; i++) {
 729                 hw->daio_mgr_dsb_dao(daio_mgr->mgr.ctrl_blk, i);
 730                 hw->daio_mgr_dsb_dai(daio_mgr->mgr.ctrl_blk, i);
 731         }
 732         hw->daio_mgr_commit_write(hw, daio_mgr->mgr.ctrl_blk);
 733
 734         *rdaio_mgr = daio_mgr;
 735
 736         return 0;
 737
 738 error2:
 739         rsc_mgr_uninit(&daio_mgr->mgr);
 740 error1:
 741         kfree(daio_mgr);
 742         return err;
 743 }
 744
 745 int daio_mgr_destroy(struct daio_mgr *daio_mgr)
 746 {
 747         unsigned long flags;
 748
 749         /* free daio input mapper list */
 750         spin_lock_irqsave(&daio_mgr->imap_lock, flags);
 751         free_input_mapper_list(&daio_mgr->imappers);
 752         spin_unlock_irqrestore(&daio_mgr->imap_lock, flags);
 753
 754         rsc_mgr_uninit(&daio_mgr->mgr);
 755         kfree(daio_mgr);
 756
 757         return 0;
 758 }
 759