sound/pci/ctxfi/ctsrc.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        ctsrc.c
   9  *
  10  * @Brief
  11  * This file contains the implementation of the Sample Rate Convertor
  12  * resource management object.
  13  *
  14  * @Author      Liu Chun
  15  * @Date        May 13 2008
  16  *
  17  */
  18
  19 #include "ctsrc.h"
  20 #include "cthardware.h"
  21 #include <linux/slab.h>
  22
  23 #define SRC_RESOURCE_NUM        256
  24 #define SRCIMP_RESOURCE_NUM     256
  25
  26 static unsigned int conj_mask;
  27
  28 static int src_default_config_memrd(struct src *src);
  29 static int src_default_config_memwr(struct src *src);
  30 static int src_default_config_arcrw(struct src *src);
  31
  32 static int (*src_default_config[3])(struct src *) = {
  33         [MEMRD] = src_default_config_memrd,
  34         [MEMWR] = src_default_config_memwr,
  35         [ARCRW] = src_default_config_arcrw
  36 };
  37
  38 static int src_set_state(struct src *src, unsigned int state)
  39 {
  40         struct hw *hw;
  41
  42         hw = src->rsc.hw;
  43         hw->src_set_state(src->rsc.ctrl_blk, state);
  44
  45         return 0;
  46 }
  47
  48 static int src_set_bm(struct src *src, unsigned int bm)
  49 {
  50         struct hw *hw;
  51
  52         hw = src->rsc.hw;
  53         hw->src_set_bm(src->rsc.ctrl_blk, bm);
  54
  55         return 0;
  56 }
  57
  58 static int src_set_sf(struct src *src, unsigned int sf)
  59 {
  60         struct hw *hw;
  61
  62         hw = src->rsc.hw;
  63         hw->src_set_sf(src->rsc.ctrl_blk, sf);
  64
  65         return 0;
  66 }
  67
  68 static int src_set_pm(struct src *src, unsigned int pm)
  69 {
  70         struct hw *hw;
  71
  72         hw = src->rsc.hw;
  73         hw->src_set_pm(src->rsc.ctrl_blk, pm);
  74
  75         return 0;
  76 }
  77
  78 static int src_set_rom(struct src *src, unsigned int rom)
  79 {
  80         struct hw *hw;
  81
  82         hw = src->rsc.hw;
  83         hw->src_set_rom(src->rsc.ctrl_blk, rom);
  84
  85         return 0;
  86 }
  87
  88 static int src_set_vo(struct src *src, unsigned int vo)
  89 {
  90         struct hw *hw;
  91
  92         hw = src->rsc.hw;
  93         hw->src_set_vo(src->rsc.ctrl_blk, vo);
  94
  95         return 0;
  96 }
  97
  98 static int src_set_st(struct src *src, unsigned int st)
  99 {
 100         struct hw *hw;
 101
 102         hw = src->rsc.hw;
 103         hw->src_set_st(src->rsc.ctrl_blk, st);
 104
 105         return 0;
 106 }
 107
 108 static int src_set_bp(struct src *src, unsigned int bp)
 109 {
 110         struct hw *hw;
 111
 112         hw = src->rsc.hw;
 113         hw->src_set_bp(src->rsc.ctrl_blk, bp);
 114
 115         return 0;
 116 }
 117
 118 static int src_set_cisz(struct src *src, unsigned int cisz)
 119 {
 120         struct hw *hw;
 121
 122         hw = src->rsc.hw;
 123         hw->src_set_cisz(src->rsc.ctrl_blk, cisz);
 124
 125         return 0;
 126 }
 127
 128 static int src_set_ca(struct src *src, unsigned int ca)
 129 {
 130         struct hw *hw;
 131
 132         hw = src->rsc.hw;
 133         hw->src_set_ca(src->rsc.ctrl_blk, ca);
 134
 135         return 0;
 136 }
 137
 138 static int src_set_sa(struct src *src, unsigned int sa)
 139 {
 140         struct hw *hw;
 141
 142         hw = src->rsc.hw;
 143         hw->src_set_sa(src->rsc.ctrl_blk, sa);
 144
 145         return 0;
 146 }
 147
 148 static int src_set_la(struct src *src, unsigned int la)
 149 {
 150         struct hw *hw;
 151
 152         hw = src->rsc.hw;
 153         hw->src_set_la(src->rsc.ctrl_blk, la);
 154
 155         return 0;
 156 }
 157
 158 static int src_set_pitch(struct src *src, unsigned int pitch)
 159 {
 160         struct hw *hw;
 161
 162         hw = src->rsc.hw;
 163         hw->src_set_pitch(src->rsc.ctrl_blk, pitch);
 164
 165         return 0;
 166 }
 167
 168 static int src_set_clear_zbufs(struct src *src)
 169 {
 170         struct hw *hw;
 171
 172         hw = src->rsc.hw;
 173         hw->src_set_clear_zbufs(src->rsc.ctrl_blk, 1);
 174
 175         return 0;
 176 }
 177
 178 static int src_commit_write(struct src *src)
 179 {
 180         struct hw *hw;
 181         int i;
 182         unsigned int dirty = 0;
 183
 184         hw = src->rsc.hw;
 185         src->rsc.ops->master(&src->rsc);
 186         if (src->rsc.msr > 1) {
 187                 /* Save dirty flags for conjugate resource programming */
 188                 dirty = hw->src_get_dirty(src->rsc.ctrl_blk) & conj_mask;
 189         }
 190         hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
 191                                                 src->rsc.ctrl_blk);
 192
 193         /* Program conjugate parameter mixer resources */
 194         if (MEMWR == src->mode)
 195                 return 0;
 196
 197         for (i = 1; i < src->rsc.msr; i++) {
 198                 src->rsc.ops->next_conj(&src->rsc);
 199                 hw->src_set_dirty(src->rsc.ctrl_blk, dirty);
 200                 hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
 201                                                         src->rsc.ctrl_blk);
 202         }
 203         src->rsc.ops->master(&src->rsc);
 204
 205         return 0;
 206 }
 207
 208 static int src_get_ca(struct src *src)
 209 {
 210         struct hw *hw;
 211
 212         hw = src->rsc.hw;
 213         return hw->src_get_ca(hw, src->rsc.ops->index(&src->rsc),
 214                                                 src->rsc.ctrl_blk);
 215 }
 216
 217 static int src_init(struct src *src)
 218 {
 219         src_default_config[src->mode](src);
 220
 221         return 0;
 222 }
 223
 224 static struct src *src_next_interleave(struct src *src)
 225 {
 226         return src->intlv;
 227 }
 228
 229 static int src_default_config_memrd(struct src *src)
 230 {
 231         struct hw *hw = src->rsc.hw;
 232         unsigned int rsr, msr;
 233
 234         hw->src_set_state(src->rsc.ctrl_blk, SRC_STATE_OFF);
 235         hw->src_set_bm(src->rsc.ctrl_blk, 1);
 236         for (rsr = 0, msr = src->rsc.msr; msr > 1; msr >>= 1)
 237                 rsr++;
 238
 239         hw->src_set_rsr(src->rsc.ctrl_blk, rsr);
 240         hw->src_set_sf(src->rsc.ctrl_blk, SRC_SF_S16);
 241         hw->src_set_wr(src->rsc.ctrl_blk, 0);
 242         hw->src_set_pm(src->rsc.ctrl_blk, 0);
 243         hw->src_set_rom(src->rsc.ctrl_blk, 0);
 244         hw->src_set_vo(src->rsc.ctrl_blk, 0);
 245         hw->src_set_st(src->rsc.ctrl_blk, 0);
 246         hw->src_set_ilsz(src->rsc.ctrl_blk, src->multi - 1);
 247         hw->src_set_cisz(src->rsc.ctrl_blk, 0x80);
 248         hw->src_set_sa(src->rsc.ctrl_blk, 0x0);
 249         hw->src_set_la(src->rsc.ctrl_blk, 0x1000);
 250         hw->src_set_ca(src->rsc.ctrl_blk, 0x80);
 251         hw->src_set_pitch(src->rsc.ctrl_blk, 0x1000000);
 252         hw->src_set_clear_zbufs(src->rsc.ctrl_blk, 1);
 253
 254         src->rsc.ops->master(&src->rsc);
 255         hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
 256                                                 src->rsc.ctrl_blk);
 257
 258         for (msr = 1; msr < src->rsc.msr; msr++) {
 259                 src->rsc.ops->next_conj(&src->rsc);
 260                 hw->src_set_pitch(src->rsc.ctrl_blk, 0x1000000);
 261                 hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
 262                                                         src->rsc.ctrl_blk);
 263         }
 264         src->rsc.ops->master(&src->rsc);
 265
 266         return 0;
 267 }
 268
 269 static int src_default_config_memwr(struct src *src)
 270 {
 271         struct hw *hw = src->rsc.hw;
 272
 273         hw->src_set_state(src->rsc.ctrl_blk, SRC_STATE_OFF);
 274         hw->src_set_bm(src->rsc.ctrl_blk, 1);
 275         hw->src_set_rsr(src->rsc.ctrl_blk, 0);
 276         hw->src_set_sf(src->rsc.ctrl_blk, SRC_SF_S16);
 277         hw->src_set_wr(src->rsc.ctrl_blk, 1);
 278         hw->src_set_pm(src->rsc.ctrl_blk, 0);
 279         hw->src_set_rom(src->rsc.ctrl_blk, 0);
 280         hw->src_set_vo(src->rsc.ctrl_blk, 0);
 281         hw->src_set_st(src->rsc.ctrl_blk, 0);
 282         hw->src_set_ilsz(src->rsc.ctrl_blk, 0);
 283         hw->src_set_cisz(src->rsc.ctrl_blk, 0x80);
 284         hw->src_set_sa(src->rsc.ctrl_blk, 0x0);
 285         hw->src_set_la(src->rsc.ctrl_blk, 0x1000);
 286         hw->src_set_ca(src->rsc.ctrl_blk, 0x80);
 287         hw->src_set_pitch(src->rsc.ctrl_blk, 0x1000000);
 288         hw->src_set_clear_zbufs(src->rsc.ctrl_blk, 1);
 289
 290         src->rsc.ops->master(&src->rsc);
 291         hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
 292                                                 src->rsc.ctrl_blk);
 293
 294         return 0;
 295 }
 296
 297 static int src_default_config_arcrw(struct src *src)
 298 {
 299         struct hw *hw = src->rsc.hw;
 300         unsigned int rsr, msr;
 301         unsigned int dirty;
 302
 303         hw->src_set_state(src->rsc.ctrl_blk, SRC_STATE_OFF);
 304         hw->src_set_bm(src->rsc.ctrl_blk, 0);
 305         for (rsr = 0, msr = src->rsc.msr; msr > 1; msr >>= 1)
 306                 rsr++;
 307
 308         hw->src_set_rsr(src->rsc.ctrl_blk, rsr);
 309         hw->src_set_sf(src->rsc.ctrl_blk, SRC_SF_F32);
 310         hw->src_set_wr(src->rsc.ctrl_blk, 0);
 311         hw->src_set_pm(src->rsc.ctrl_blk, 0);
 312         hw->src_set_rom(src->rsc.ctrl_blk, 0);
 313         hw->src_set_vo(src->rsc.ctrl_blk, 0);
 314         hw->src_set_st(src->rsc.ctrl_blk, 0);
 315         hw->src_set_ilsz(src->rsc.ctrl_blk, 0);
 316         hw->src_set_cisz(src->rsc.ctrl_blk, 0x80);
 317         hw->src_set_sa(src->rsc.ctrl_blk, 0x0);
 318         /*hw->src_set_sa(src->rsc.ctrl_blk, 0x100);*/
 319         hw->src_set_la(src->rsc.ctrl_blk, 0x1000);
 320         /*hw->src_set_la(src->rsc.ctrl_blk, 0x03ffffe0);*/
 321         hw->src_set_ca(src->rsc.ctrl_blk, 0x80);
 322         hw->src_set_pitch(src->rsc.ctrl_blk, 0x1000000);
 323         hw->src_set_clear_zbufs(src->rsc.ctrl_blk, 1);
 324
 325         dirty = hw->src_get_dirty(src->rsc.ctrl_blk);
 326         src->rsc.ops->master(&src->rsc);
 327         for (msr = 0; msr < src->rsc.msr; msr++) {
 328                 hw->src_set_dirty(src->rsc.ctrl_blk, dirty);
 329                 hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
 330                                                         src->rsc.ctrl_blk);
 331                 src->rsc.ops->next_conj(&src->rsc);
 332         }
 333         src->rsc.ops->master(&src->rsc);
 334
 335         return 0;
 336 }
 337
 338 static const struct src_rsc_ops src_rsc_ops = {
 339         .set_state              = src_set_state,
 340         .set_bm                 = src_set_bm,
 341         .set_sf                 = src_set_sf,
 342         .set_pm                 = src_set_pm,
 343         .set_rom                = src_set_rom,
 344         .set_vo                 = src_set_vo,
 345         .set_st                 = src_set_st,
 346         .set_bp                 = src_set_bp,
 347         .set_cisz               = src_set_cisz,
 348         .set_ca                 = src_set_ca,
 349         .set_sa                 = src_set_sa,
 350         .set_la                 = src_set_la,
 351         .set_pitch              = src_set_pitch,
 352         .set_clr_zbufs          = src_set_clear_zbufs,
 353         .commit_write           = src_commit_write,
 354         .get_ca                 = src_get_ca,
 355         .init                   = src_init,
 356         .next_interleave        = src_next_interleave,
 357 };
 358
 359 static int
 360 src_rsc_init(struct src *src, u32 idx,
 361              const struct src_desc *desc, struct src_mgr *mgr)
 362 {
 363         int err;
 364         int i, n;
 365         struct src *p;
 366
 367         n = (MEMRD == desc->mode) ? desc->multi : 1;
 368         for (i = 0, p = src; i < n; i++, p++) {
 369                 err = rsc_init(&p->rsc, idx + i, SRC, desc->msr, mgr->mgr.hw);
 370                 if (err)
 371                         goto error1;
 372
 373                 /* Initialize src specific rsc operations */
 374                 p->ops = &src_rsc_ops;
 375                 p->multi = (0 == i) ? desc->multi : 1;
 376                 p->mode = desc->mode;
 377                 src_default_config[desc->mode](p);
 378                 mgr->src_enable(mgr, p);
 379                 p->intlv = p + 1;
 380         }
 381         (--p)->intlv = NULL;    /* Set @intlv of the last SRC to NULL */
 382
 383         mgr->commit_write(mgr);
 384
 385         return 0;
 386
 387 error1:
 388         for (i--, p--; i >= 0; i--, p--) {
 389                 mgr->src_disable(mgr, p);
 390                 rsc_uninit(&p->rsc);
 391         }
 392         mgr->commit_write(mgr);
 393         return err;
 394 }
 395
 396 static int src_rsc_uninit(struct src *src, struct src_mgr *mgr)
 397 {
 398         int i, n;
 399         struct src *p;
 400
 401         n = (MEMRD == src->mode) ? src->multi : 1;
 402         for (i = 0, p = src; i < n; i++, p++) {
 403                 mgr->src_disable(mgr, p);
 404                 rsc_uninit(&p->rsc);
 405                 p->multi = 0;
 406                 p->ops = NULL;
 407                 p->mode = NUM_SRCMODES;
 408                 p->intlv = NULL;
 409         }
 410         mgr->commit_write(mgr);
 411
 412         return 0;
 413 }
 414
 415 static int
 416 get_src_rsc(struct src_mgr *mgr, const struct src_desc *desc, struct src **rsrc)
 417 {
 418         unsigned int idx = SRC_RESOURCE_NUM;
 419         int err;
 420         struct src *src;
 421         unsigned long flags;
 422
 423         *rsrc = NULL;
 424
 425         /* Check whether there are sufficient src resources to meet request. */
 426         spin_lock_irqsave(&mgr->mgr_lock, flags);
 427         if (MEMRD == desc->mode)
 428                 err = mgr_get_resource(&mgr->mgr, desc->multi, &idx);
 429         else
 430                 err = mgr_get_resource(&mgr->mgr, 1, &idx);
 431
 432         spin_unlock_irqrestore(&mgr->mgr_lock, flags);
 433         if (err) {
 434                 dev_err(mgr->card->dev,
 435                         "Can't meet SRC resource request!\n");
 436                 return err;
 437         }
 438
 439         /* Allocate mem for master src resource */
 440         if (MEMRD == desc->mode)
 441                 src = kcalloc(desc->multi, sizeof(*src), GFP_KERNEL);
 442         else
 443                 src = kzalloc(sizeof(*src), GFP_KERNEL);
 444
 445         if (!src) {
 446                 err = -ENOMEM;
 447                 goto error1;
 448         }
 449
 450         err = src_rsc_init(src, idx, desc, mgr);
 451         if (err)
 452                 goto error2;
 453
 454         *rsrc = src;
 455
 456         return 0;
 457
 458 error2:
 459         kfree(src);
 460 error1:
 461         spin_lock_irqsave(&mgr->mgr_lock, flags);
 462         if (MEMRD == desc->mode)
 463                 mgr_put_resource(&mgr->mgr, desc->multi, idx);
 464         else
 465                 mgr_put_resource(&mgr->mgr, 1, idx);
 466
 467         spin_unlock_irqrestore(&mgr->mgr_lock, flags);
 468         return err;
 469 }
 470
 471 static int put_src_rsc(struct src_mgr *mgr, struct src *src)
 472 {
 473         unsigned long flags;
 474
 475         spin_lock_irqsave(&mgr->mgr_lock, flags);
 476         src->rsc.ops->master(&src->rsc);
 477         if (MEMRD == src->mode)
 478                 mgr_put_resource(&mgr->mgr, src->multi,
 479                                  src->rsc.ops->index(&src->rsc));
 480         else
 481                 mgr_put_resource(&mgr->mgr, 1, src->rsc.ops->index(&src->rsc));
 482
 483         spin_unlock_irqrestore(&mgr->mgr_lock, flags);
 484         src_rsc_uninit(src, mgr);
 485         kfree(src);
 486
 487         return 0;
 488 }
 489
 490 static int src_enable_s(struct src_mgr *mgr, struct src *src)
 491 {
 492         struct hw *hw = mgr->mgr.hw;
 493         int i;
 494
 495         src->rsc.ops->master(&src->rsc);
 496         for (i = 0; i < src->rsc.msr; i++) {
 497                 hw->src_mgr_enbs_src(mgr->mgr.ctrl_blk,
 498                                      src->rsc.ops->index(&src->rsc));
 499                 src->rsc.ops->next_conj(&src->rsc);
 500         }
 501         src->rsc.ops->master(&src->rsc);
 502
 503         return 0;
 504 }
 505
 506 static int src_enable(struct src_mgr *mgr, struct src *src)
 507 {
 508         struct hw *hw = mgr->mgr.hw;
 509         int i;
 510
 511         src->rsc.ops->master(&src->rsc);
 512         for (i = 0; i < src->rsc.msr; i++) {
 513                 hw->src_mgr_enb_src(mgr->mgr.ctrl_blk,
 514                                     src->rsc.ops->index(&src->rsc));
 515                 src->rsc.ops->next_conj(&src->rsc);
 516         }
 517         src->rsc.ops->master(&src->rsc);
 518
 519         return 0;
 520 }
 521
 522 static int src_disable(struct src_mgr *mgr, struct src *src)
 523 {
 524         struct hw *hw = mgr->mgr.hw;
 525         int i;
 526
 527         src->rsc.ops->master(&src->rsc);
 528         for (i = 0; i < src->rsc.msr; i++) {
 529                 hw->src_mgr_dsb_src(mgr->mgr.ctrl_blk,
 530                                     src->rsc.ops->index(&src->rsc));
 531                 src->rsc.ops->next_conj(&src->rsc);
 532         }
 533         src->rsc.ops->master(&src->rsc);
 534
 535         return 0;
 536 }
 537
 538 static int src_mgr_commit_write(struct src_mgr *mgr)
 539 {
 540         struct hw *hw = mgr->mgr.hw;
 541
 542         hw->src_mgr_commit_write(hw, mgr->mgr.ctrl_blk);
 543
 544         return 0;
 545 }
 546
 547 int src_mgr_create(struct hw *hw, struct src_mgr **rsrc_mgr)
 548 {
 549         int err, i;
 550         struct src_mgr *src_mgr;
 551
 552         *rsrc_mgr = NULL;
 553         src_mgr = kzalloc(sizeof(*src_mgr), GFP_KERNEL);
 554         if (!src_mgr)
 555                 return -ENOMEM;
 556
 557         err = rsc_mgr_init(&src_mgr->mgr, SRC, SRC_RESOURCE_NUM, hw);
 558         if (err)
 559                 goto error1;
 560
 561         spin_lock_init(&src_mgr->mgr_lock);
 562         conj_mask = hw->src_dirty_conj_mask();
 563
 564         src_mgr->get_src = get_src_rsc;
 565         src_mgr->put_src = put_src_rsc;
 566         src_mgr->src_enable_s = src_enable_s;
 567         src_mgr->src_enable = src_enable;
 568         src_mgr->src_disable = src_disable;
 569         src_mgr->commit_write = src_mgr_commit_write;
 570         src_mgr->card = hw->card;
 571
 572         /* Disable all SRC resources. */
 573         for (i = 0; i < 256; i++)
 574                 hw->src_mgr_dsb_src(src_mgr->mgr.ctrl_blk, i);
 575
 576         hw->src_mgr_commit_write(hw, src_mgr->mgr.ctrl_blk);
 577
 578         *rsrc_mgr = src_mgr;
 579
 580         return 0;
 581
 582 error1:
 583         kfree(src_mgr);
 584         return err;
 585 }
 586
 587 int src_mgr_destroy(struct src_mgr *src_mgr)
 588 {
 589         rsc_mgr_uninit(&src_mgr->mgr);
 590         kfree(src_mgr);
 591
 592         return 0;
 593 }
 594
 595 /* SRCIMP resource manager operations */
 596
 597 static int srcimp_master(struct rsc *rsc)
 598 {
 599         rsc->conj = 0;
 600         return rsc->idx = container_of(rsc, struct srcimp, rsc)->idx[0];
 601 }
 602
 603 static int srcimp_next_conj(struct rsc *rsc)
 604 {
 605         rsc->conj++;
 606         return container_of(rsc, struct srcimp, rsc)->idx[rsc->conj];
 607 }
 608
 609 static int srcimp_index(const struct rsc *rsc)
 610 {
 611         return container_of(rsc, struct srcimp, rsc)->idx[rsc->conj];
 612 }
 613
 614 static const struct rsc_ops srcimp_basic_rsc_ops = {
 615         .master         = srcimp_master,
 616         .next_conj      = srcimp_next_conj,
 617         .index          = srcimp_index,
 618         .output_slot    = NULL,
 619 };
 620
 621 static int srcimp_map(struct srcimp *srcimp, struct src *src, struct rsc *input)
 622 {
 623         struct imapper *entry;
 624         int i;
 625
 626         srcimp->rsc.ops->master(&srcimp->rsc);
 627         src->rsc.ops->master(&src->rsc);
 628         input->ops->master(input);
 629
 630         /* Program master and conjugate resources */
 631         for (i = 0; i < srcimp->rsc.msr; i++) {
 632                 entry = &srcimp->imappers[i];
 633                 entry->slot = input->ops->output_slot(input);
 634                 entry->user = src->rsc.ops->index(&src->rsc);
 635                 entry->addr = srcimp->rsc.ops->index(&srcimp->rsc);
 636                 srcimp->mgr->imap_add(srcimp->mgr, entry);
 637                 srcimp->mapped |= (0x1 << i);
 638
 639                 srcimp->rsc.ops->next_conj(&srcimp->rsc);
 640                 input->ops->next_conj(input);
 641         }
 642
 643         srcimp->rsc.ops->master(&srcimp->rsc);
 644         input->ops->master(input);
 645
 646         return 0;
 647 }
 648
 649 static int srcimp_unmap(struct srcimp *srcimp)
 650 {
 651         int i;
 652
 653         /* Program master and conjugate resources */
 654         for (i = 0; i < srcimp->rsc.msr; i++) {
 655                 if (srcimp->mapped & (0x1 << i)) {
 656                         srcimp->mgr->imap_delete(srcimp->mgr,
 657                                                  &srcimp->imappers[i]);
 658                         srcimp->mapped &= ~(0x1 << i);
 659                 }
 660         }
 661
 662         return 0;
 663 }
 664
 665 static const struct srcimp_rsc_ops srcimp_ops = {
 666         .map = srcimp_map,
 667         .unmap = srcimp_unmap
 668 };
 669
 670 static int srcimp_rsc_init(struct srcimp *srcimp,
 671                            const struct srcimp_desc *desc,
 672                            struct srcimp_mgr *mgr)
 673 {
 674         int err;
 675
 676         err = rsc_init(&srcimp->rsc, srcimp->idx[0],
 677                        SRCIMP, desc->msr, mgr->mgr.hw);
 678         if (err)
 679                 return err;
 680
 681         /* Reserve memory for imapper nodes */
 682         srcimp->imappers = kcalloc(desc->msr, sizeof(struct imapper),
 683                                    GFP_KERNEL);
 684         if (!srcimp->imappers) {
 685                 err = -ENOMEM;
 686                 goto error1;
 687         }
 688
 689         /* Set srcimp specific operations */
 690         srcimp->rsc.ops = &srcimp_basic_rsc_ops;
 691         srcimp->ops = &srcimp_ops;
 692         srcimp->mgr = mgr;
 693
 694         srcimp->rsc.ops->master(&srcimp->rsc);
 695
 696         return 0;
 697
 698 error1:
 699         rsc_uninit(&srcimp->rsc);
 700         return err;
 701 }
 702
 703 static int srcimp_rsc_uninit(struct srcimp *srcimp)
 704 {
 705         kfree(srcimp->imappers);
 706         srcimp->imappers = NULL;
 707         srcimp->ops = NULL;
 708         srcimp->mgr = NULL;
 709         rsc_uninit(&srcimp->rsc);
 710
 711         return 0;
 712 }
 713
 714 static int get_srcimp_rsc(struct srcimp_mgr *mgr,
 715                           const struct srcimp_desc *desc,
 716                           struct srcimp **rsrcimp)
 717 {
 718         int err, i;
 719         unsigned int idx;
 720         struct srcimp *srcimp;
 721         unsigned long flags;
 722
 723         *rsrcimp = NULL;
 724
 725         /* Allocate mem for SRCIMP resource */
 726         srcimp = kzalloc(sizeof(*srcimp), GFP_KERNEL);
 727         if (!srcimp)
 728                 return -ENOMEM;
 729
 730         /* Check whether there are sufficient SRCIMP resources. */
 731         err = 0;
 732         spin_lock_irqsave(&mgr->mgr_lock, flags);
 733         for (i = 0; i < desc->msr; i++) {
 734                 err = mgr_get_resource(&mgr->mgr, 1, &idx);
 735                 if (err)
 736                         break;
 737
 738                 srcimp->idx[i] = idx;
 739         }
 740         spin_unlock_irqrestore(&mgr->mgr_lock, flags);
 741         if (err) {
 742                 dev_err(mgr->card->dev,
 743                         "Can't meet SRCIMP resource request!\n");
 744                 goto error1;
 745         }
 746
 747         err = srcimp_rsc_init(srcimp, desc, mgr);
 748         if (err)
 749                 goto error1;
 750
 751         *rsrcimp = srcimp;
 752
 753         return 0;
 754
 755 error1:
 756         spin_lock_irqsave(&mgr->mgr_lock, flags);
 757         for (i--; i >= 0; i--)
 758                 mgr_put_resource(&mgr->mgr, 1, srcimp->idx[i]);
 759
 760         spin_unlock_irqrestore(&mgr->mgr_lock, flags);
 761         kfree(srcimp);
 762         return err;
 763 }
 764
 765 static int put_srcimp_rsc(struct srcimp_mgr *mgr, struct srcimp *srcimp)
 766 {
 767         unsigned long flags;
 768         int i;
 769
 770         spin_lock_irqsave(&mgr->mgr_lock, flags);
 771         for (i = 0; i < srcimp->rsc.msr; i++)
 772                 mgr_put_resource(&mgr->mgr, 1, srcimp->idx[i]);
 773
 774         spin_unlock_irqrestore(&mgr->mgr_lock, flags);
 775         srcimp_rsc_uninit(srcimp);
 776         kfree(srcimp);
 777
 778         return 0;
 779 }
 780
 781 static int srcimp_map_op(void *data, struct imapper *entry)
 782 {
 783         struct rsc_mgr *mgr = &((struct srcimp_mgr *)data)->mgr;
 784         struct hw *hw = mgr->hw;
 785
 786         hw->srcimp_mgr_set_imaparc(mgr->ctrl_blk, entry->slot);
 787         hw->srcimp_mgr_set_imapuser(mgr->ctrl_blk, entry->user);
 788         hw->srcimp_mgr_set_imapnxt(mgr->ctrl_blk, entry->next);
 789         hw->srcimp_mgr_set_imapaddr(mgr->ctrl_blk, entry->addr);
 790         hw->srcimp_mgr_commit_write(mgr->hw, mgr->ctrl_blk);
 791
 792         return 0;
 793 }
 794
 795 static int srcimp_imap_add(struct srcimp_mgr *mgr, struct imapper *entry)
 796 {
 797         unsigned long flags;
 798         int err;
 799
 800         spin_lock_irqsave(&mgr->imap_lock, flags);
 801         if ((0 == entry->addr) && (mgr->init_imap_added)) {
 802                 input_mapper_delete(&mgr->imappers,
 803                                     mgr->init_imap, srcimp_map_op, mgr);
 804                 mgr->init_imap_added = 0;
 805         }
 806         err = input_mapper_add(&mgr->imappers, entry, srcimp_map_op, mgr);
 807         spin_unlock_irqrestore(&mgr->imap_lock, flags);
 808
 809         return err;
 810 }
 811
 812 static int srcimp_imap_delete(struct srcimp_mgr *mgr, struct imapper *entry)
 813 {
 814         unsigned long flags;
 815         int err;
 816
 817         spin_lock_irqsave(&mgr->imap_lock, flags);
 818         err = input_mapper_delete(&mgr->imappers, entry, srcimp_map_op, mgr);
 819         if (list_empty(&mgr->imappers)) {
 820                 input_mapper_add(&mgr->imappers, mgr->init_imap,
 821                                  srcimp_map_op, mgr);
 822                 mgr->init_imap_added = 1;
 823         }
 824         spin_unlock_irqrestore(&mgr->imap_lock, flags);
 825
 826         return err;
 827 }
 828
 829 int srcimp_mgr_create(struct hw *hw, struct srcimp_mgr **rsrcimp_mgr)
 830 {
 831         int err;
 832         struct srcimp_mgr *srcimp_mgr;
 833         struct imapper *entry;
 834
 835         *rsrcimp_mgr = NULL;
 836         srcimp_mgr = kzalloc(sizeof(*srcimp_mgr), GFP_KERNEL);
 837         if (!srcimp_mgr)
 838                 return -ENOMEM;
 839
 840         err = rsc_mgr_init(&srcimp_mgr->mgr, SRCIMP, SRCIMP_RESOURCE_NUM, hw);
 841         if (err)
 842                 goto error1;
 843
 844         spin_lock_init(&srcimp_mgr->mgr_lock);
 845         spin_lock_init(&srcimp_mgr->imap_lock);
 846         INIT_LIST_HEAD(&srcimp_mgr->imappers);
 847         entry = kzalloc(sizeof(*entry), GFP_KERNEL);
 848         if (!entry) {
 849                 err = -ENOMEM;
 850                 goto error2;
 851         }
 852         entry->slot = entry->addr = entry->next = entry->user = 0;
 853         list_add(&entry->list, &srcimp_mgr->imappers);
 854         srcimp_mgr->init_imap = entry;
 855         srcimp_mgr->init_imap_added = 1;
 856
 857         srcimp_mgr->get_srcimp = get_srcimp_rsc;
 858         srcimp_mgr->put_srcimp = put_srcimp_rsc;
 859         srcimp_mgr->imap_add = srcimp_imap_add;
 860         srcimp_mgr->imap_delete = srcimp_imap_delete;
 861         srcimp_mgr->card = hw->card;
 862
 863         *rsrcimp_mgr = srcimp_mgr;
 864
 865         return 0;
 866
 867 error2:
 868         rsc_mgr_uninit(&srcimp_mgr->mgr);
 869 error1:
 870         kfree(srcimp_mgr);
 871         return err;
 872 }
 873
 874 int srcimp_mgr_destroy(struct srcimp_mgr *srcimp_mgr)
 875 {
 876         unsigned long flags;
 877
 878         /* free src input mapper list */
 879         spin_lock_irqsave(&srcimp_mgr->imap_lock, flags);
 880         free_input_mapper_list(&srcimp_mgr->imappers);
 881         spin_unlock_irqrestore(&srcimp_mgr->imap_lock, flags);
 882
 883         rsc_mgr_uninit(&srcimp_mgr->mgr);
 884         kfree(srcimp_mgr);
 885
 886         return 0;
 887 }