1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
4 *
5 * @File ctsrc.c
6 *
7 * @Brief
8 * This file contains the implementation of the Sample Rate Convertor
9 * resource management object.
10 *
11 * @Author Liu Chun
12 * @Date May 13 2008
13 */
14
15 #include "ctsrc.h"
16 #include "cthardware.h"
17 #include <linux/slab.h>
18
19 #define SRC_RESOURCE_NUM 256
20 #define SRCIMP_RESOURCE_NUM 256
21
22 static unsigned int conj_mask;
23
24 static int src_default_config_memrd(struct src *src);
25 static int src_default_config_memwr(struct src *src);
26 static int src_default_config_arcrw(struct src *src);
27
28 static int (*src_default_config[3])(struct src *) = {
29 [MEMRD] = src_default_config_memrd,
30 [MEMWR] = src_default_config_memwr,
31 [ARCRW] = src_default_config_arcrw
32 };
33
src_set_state(struct src * src,unsigned int state)34 static int src_set_state(struct src *src, unsigned int state)
35 {
36 struct hw *hw;
37
38 hw = src->rsc.hw;
39 hw->src_set_state(src->rsc.ctrl_blk, state);
40
41 return 0;
42 }
43
src_set_bm(struct src * src,unsigned int bm)44 static int src_set_bm(struct src *src, unsigned int bm)
45 {
46 struct hw *hw;
47
48 hw = src->rsc.hw;
49 hw->src_set_bm(src->rsc.ctrl_blk, bm);
50
51 return 0;
52 }
53
src_set_sf(struct src * src,unsigned int sf)54 static int src_set_sf(struct src *src, unsigned int sf)
55 {
56 struct hw *hw;
57
58 hw = src->rsc.hw;
59 hw->src_set_sf(src->rsc.ctrl_blk, sf);
60
61 return 0;
62 }
63
src_set_pm(struct src * src,unsigned int pm)64 static int src_set_pm(struct src *src, unsigned int pm)
65 {
66 struct hw *hw;
67
68 hw = src->rsc.hw;
69 hw->src_set_pm(src->rsc.ctrl_blk, pm);
70
71 return 0;
72 }
73
src_set_rom(struct src * src,unsigned int rom)74 static int src_set_rom(struct src *src, unsigned int rom)
75 {
76 struct hw *hw;
77
78 hw = src->rsc.hw;
79 hw->src_set_rom(src->rsc.ctrl_blk, rom);
80
81 return 0;
82 }
83
src_set_vo(struct src * src,unsigned int vo)84 static int src_set_vo(struct src *src, unsigned int vo)
85 {
86 struct hw *hw;
87
88 hw = src->rsc.hw;
89 hw->src_set_vo(src->rsc.ctrl_blk, vo);
90
91 return 0;
92 }
93
src_set_st(struct src * src,unsigned int st)94 static int src_set_st(struct src *src, unsigned int st)
95 {
96 struct hw *hw;
97
98 hw = src->rsc.hw;
99 hw->src_set_st(src->rsc.ctrl_blk, st);
100
101 return 0;
102 }
103
src_set_bp(struct src * src,unsigned int bp)104 static int src_set_bp(struct src *src, unsigned int bp)
105 {
106 struct hw *hw;
107
108 hw = src->rsc.hw;
109 hw->src_set_bp(src->rsc.ctrl_blk, bp);
110
111 return 0;
112 }
113
src_set_cisz(struct src * src,unsigned int cisz)114 static int src_set_cisz(struct src *src, unsigned int cisz)
115 {
116 struct hw *hw;
117
118 hw = src->rsc.hw;
119 hw->src_set_cisz(src->rsc.ctrl_blk, cisz);
120
121 return 0;
122 }
123
src_set_ca(struct src * src,unsigned int ca)124 static int src_set_ca(struct src *src, unsigned int ca)
125 {
126 struct hw *hw;
127
128 hw = src->rsc.hw;
129 hw->src_set_ca(src->rsc.ctrl_blk, ca);
130
131 return 0;
132 }
133
src_set_sa(struct src * src,unsigned int sa)134 static int src_set_sa(struct src *src, unsigned int sa)
135 {
136 struct hw *hw;
137
138 hw = src->rsc.hw;
139 hw->src_set_sa(src->rsc.ctrl_blk, sa);
140
141 return 0;
142 }
143
src_set_la(struct src * src,unsigned int la)144 static int src_set_la(struct src *src, unsigned int la)
145 {
146 struct hw *hw;
147
148 hw = src->rsc.hw;
149 hw->src_set_la(src->rsc.ctrl_blk, la);
150
151 return 0;
152 }
153
src_set_pitch(struct src * src,unsigned int pitch)154 static int src_set_pitch(struct src *src, unsigned int pitch)
155 {
156 struct hw *hw;
157
158 hw = src->rsc.hw;
159 hw->src_set_pitch(src->rsc.ctrl_blk, pitch);
160
161 return 0;
162 }
163
src_set_clear_zbufs(struct src * src)164 static int src_set_clear_zbufs(struct src *src)
165 {
166 struct hw *hw;
167
168 hw = src->rsc.hw;
169 hw->src_set_clear_zbufs(src->rsc.ctrl_blk, 1);
170
171 return 0;
172 }
173
src_commit_write(struct src * src)174 static int src_commit_write(struct src *src)
175 {
176 struct hw *hw;
177 int i;
178 unsigned int dirty = 0;
179
180 hw = src->rsc.hw;
181 src->rsc.ops->master(&src->rsc);
182 if (src->rsc.msr > 1) {
183 /* Save dirty flags for conjugate resource programming */
184 dirty = hw->src_get_dirty(src->rsc.ctrl_blk) & conj_mask;
185 }
186 hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
187 src->rsc.ctrl_blk);
188
189 /* Program conjugate parameter mixer resources */
190 if (MEMWR == src->mode)
191 return 0;
192
193 for (i = 1; i < src->rsc.msr; i++) {
194 src->rsc.ops->next_conj(&src->rsc);
195 hw->src_set_dirty(src->rsc.ctrl_blk, dirty);
196 hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
197 src->rsc.ctrl_blk);
198 }
199 src->rsc.ops->master(&src->rsc);
200
201 return 0;
202 }
203
src_get_ca(struct src * src)204 static int src_get_ca(struct src *src)
205 {
206 struct hw *hw;
207
208 hw = src->rsc.hw;
209 return hw->src_get_ca(hw, src->rsc.ops->index(&src->rsc),
210 src->rsc.ctrl_blk);
211 }
212
src_init(struct src * src)213 static int src_init(struct src *src)
214 {
215 src_default_config[src->mode](src);
216
217 return 0;
218 }
219
src_next_interleave(struct src * src)220 static struct src *src_next_interleave(struct src *src)
221 {
222 return src->intlv;
223 }
224
src_default_config_memrd(struct src * src)225 static int src_default_config_memrd(struct src *src)
226 {
227 struct hw *hw = src->rsc.hw;
228 unsigned int rsr, msr;
229
230 hw->src_set_state(src->rsc.ctrl_blk, SRC_STATE_OFF);
231 hw->src_set_bm(src->rsc.ctrl_blk, 1);
232 for (rsr = 0, msr = src->rsc.msr; msr > 1; msr >>= 1)
233 rsr++;
234
235 hw->src_set_rsr(src->rsc.ctrl_blk, rsr);
236 hw->src_set_sf(src->rsc.ctrl_blk, SRC_SF_S16);
237 hw->src_set_wr(src->rsc.ctrl_blk, 0);
238 hw->src_set_pm(src->rsc.ctrl_blk, 0);
239 hw->src_set_rom(src->rsc.ctrl_blk, 0);
240 hw->src_set_vo(src->rsc.ctrl_blk, 0);
241 hw->src_set_st(src->rsc.ctrl_blk, 0);
242 hw->src_set_ilsz(src->rsc.ctrl_blk, src->multi - 1);
243 hw->src_set_cisz(src->rsc.ctrl_blk, 0x80);
244 hw->src_set_sa(src->rsc.ctrl_blk, 0x0);
245 hw->src_set_la(src->rsc.ctrl_blk, 0x1000);
246 hw->src_set_ca(src->rsc.ctrl_blk, 0x80);
247 hw->src_set_pitch(src->rsc.ctrl_blk, 0x1000000);
248 hw->src_set_clear_zbufs(src->rsc.ctrl_blk, 1);
249
250 src->rsc.ops->master(&src->rsc);
251 hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
252 src->rsc.ctrl_blk);
253
254 for (msr = 1; msr < src->rsc.msr; msr++) {
255 src->rsc.ops->next_conj(&src->rsc);
256 hw->src_set_pitch(src->rsc.ctrl_blk, 0x1000000);
257 hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
258 src->rsc.ctrl_blk);
259 }
260 src->rsc.ops->master(&src->rsc);
261
262 return 0;
263 }
264
src_default_config_memwr(struct src * src)265 static int src_default_config_memwr(struct src *src)
266 {
267 struct hw *hw = src->rsc.hw;
268
269 hw->src_set_state(src->rsc.ctrl_blk, SRC_STATE_OFF);
270 hw->src_set_bm(src->rsc.ctrl_blk, 1);
271 hw->src_set_rsr(src->rsc.ctrl_blk, 0);
272 hw->src_set_sf(src->rsc.ctrl_blk, SRC_SF_S16);
273 hw->src_set_wr(src->rsc.ctrl_blk, 1);
274 hw->src_set_pm(src->rsc.ctrl_blk, 0);
275 hw->src_set_rom(src->rsc.ctrl_blk, 0);
276 hw->src_set_vo(src->rsc.ctrl_blk, 0);
277 hw->src_set_st(src->rsc.ctrl_blk, 0);
278 hw->src_set_ilsz(src->rsc.ctrl_blk, 0);
279 hw->src_set_cisz(src->rsc.ctrl_blk, 0x80);
280 hw->src_set_sa(src->rsc.ctrl_blk, 0x0);
281 hw->src_set_la(src->rsc.ctrl_blk, 0x1000);
282 hw->src_set_ca(src->rsc.ctrl_blk, 0x80);
283 hw->src_set_pitch(src->rsc.ctrl_blk, 0x1000000);
284 hw->src_set_clear_zbufs(src->rsc.ctrl_blk, 1);
285
286 src->rsc.ops->master(&src->rsc);
287 hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
288 src->rsc.ctrl_blk);
289
290 return 0;
291 }
292
src_default_config_arcrw(struct src * src)293 static int src_default_config_arcrw(struct src *src)
294 {
295 struct hw *hw = src->rsc.hw;
296 unsigned int rsr, msr;
297 unsigned int dirty;
298
299 hw->src_set_state(src->rsc.ctrl_blk, SRC_STATE_OFF);
300 hw->src_set_bm(src->rsc.ctrl_blk, 0);
301 for (rsr = 0, msr = src->rsc.msr; msr > 1; msr >>= 1)
302 rsr++;
303
304 hw->src_set_rsr(src->rsc.ctrl_blk, rsr);
305 hw->src_set_sf(src->rsc.ctrl_blk, SRC_SF_F32);
306 hw->src_set_wr(src->rsc.ctrl_blk, 0);
307 hw->src_set_pm(src->rsc.ctrl_blk, 0);
308 hw->src_set_rom(src->rsc.ctrl_blk, 0);
309 hw->src_set_vo(src->rsc.ctrl_blk, 0);
310 hw->src_set_st(src->rsc.ctrl_blk, 0);
311 hw->src_set_ilsz(src->rsc.ctrl_blk, 0);
312 hw->src_set_cisz(src->rsc.ctrl_blk, 0x80);
313 hw->src_set_sa(src->rsc.ctrl_blk, 0x0);
314 /*hw->src_set_sa(src->rsc.ctrl_blk, 0x100);*/
315 hw->src_set_la(src->rsc.ctrl_blk, 0x1000);
316 /*hw->src_set_la(src->rsc.ctrl_blk, 0x03ffffe0);*/
317 hw->src_set_ca(src->rsc.ctrl_blk, 0x80);
318 hw->src_set_pitch(src->rsc.ctrl_blk, 0x1000000);
319 hw->src_set_clear_zbufs(src->rsc.ctrl_blk, 1);
320
321 dirty = hw->src_get_dirty(src->rsc.ctrl_blk);
322 src->rsc.ops->master(&src->rsc);
323 for (msr = 0; msr < src->rsc.msr; msr++) {
324 hw->src_set_dirty(src->rsc.ctrl_blk, dirty);
325 hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
326 src->rsc.ctrl_blk);
327 src->rsc.ops->next_conj(&src->rsc);
328 }
329 src->rsc.ops->master(&src->rsc);
330
331 return 0;
332 }
333
334 static const struct src_rsc_ops src_rsc_ops = {
335 .set_state = src_set_state,
336 .set_bm = src_set_bm,
337 .set_sf = src_set_sf,
338 .set_pm = src_set_pm,
339 .set_rom = src_set_rom,
340 .set_vo = src_set_vo,
341 .set_st = src_set_st,
342 .set_bp = src_set_bp,
343 .set_cisz = src_set_cisz,
344 .set_ca = src_set_ca,
345 .set_sa = src_set_sa,
346 .set_la = src_set_la,
347 .set_pitch = src_set_pitch,
348 .set_clr_zbufs = src_set_clear_zbufs,
349 .commit_write = src_commit_write,
350 .get_ca = src_get_ca,
351 .init = src_init,
352 .next_interleave = src_next_interleave,
353 };
354
355 static int
src_rsc_init(struct src * src,u32 idx,const struct src_desc * desc,struct src_mgr * mgr)356 src_rsc_init(struct src *src, u32 idx,
357 const struct src_desc *desc, struct src_mgr *mgr)
358 {
359 int err;
360 int i, n;
361 struct src *p;
362
363 n = (MEMRD == desc->mode) ? desc->multi : 1;
364 for (i = 0, p = src; i < n; i++, p++) {
365 err = rsc_init(&p->rsc, idx + i, SRC, desc->msr, mgr->mgr.hw);
366 if (err)
367 goto error1;
368
369 /* Initialize src specific rsc operations */
370 p->ops = &src_rsc_ops;
371 p->multi = (0 == i) ? desc->multi : 1;
372 p->mode = desc->mode;
373 src_default_config[desc->mode](p);
374 mgr->src_enable(mgr, p);
375 p->intlv = p + 1;
376 }
377 (--p)->intlv = NULL; /* Set @intlv of the last SRC to NULL */
378
379 mgr->commit_write(mgr);
380
381 return 0;
382
383 error1:
384 for (i--, p--; i >= 0; i--, p--) {
385 mgr->src_disable(mgr, p);
386 rsc_uninit(&p->rsc);
387 }
388 mgr->commit_write(mgr);
389 return err;
390 }
391
src_rsc_uninit(struct src * src,struct src_mgr * mgr)392 static int src_rsc_uninit(struct src *src, struct src_mgr *mgr)
393 {
394 int i, n;
395 struct src *p;
396
397 n = (MEMRD == src->mode) ? src->multi : 1;
398 for (i = 0, p = src; i < n; i++, p++) {
399 mgr->src_disable(mgr, p);
400 rsc_uninit(&p->rsc);
401 p->multi = 0;
402 p->ops = NULL;
403 p->mode = NUM_SRCMODES;
404 p->intlv = NULL;
405 }
406 mgr->commit_write(mgr);
407
408 return 0;
409 }
410
411 static int
get_src_rsc(struct src_mgr * mgr,const struct src_desc * desc,struct src ** rsrc)412 get_src_rsc(struct src_mgr *mgr, const struct src_desc *desc, struct src **rsrc)
413 {
414 unsigned int idx = SRC_RESOURCE_NUM;
415 int err;
416 struct src *src;
417 unsigned long flags;
418
419 *rsrc = NULL;
420
421 /* Check whether there are sufficient src resources to meet request. */
422 spin_lock_irqsave(&mgr->mgr_lock, flags);
423 if (MEMRD == desc->mode)
424 err = mgr_get_resource(&mgr->mgr, desc->multi, &idx);
425 else
426 err = mgr_get_resource(&mgr->mgr, 1, &idx);
427
428 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
429 if (err) {
430 dev_err(mgr->card->dev,
431 "Can't meet SRC resource request!\n");
432 return err;
433 }
434
435 /* Allocate mem for master src resource */
436 if (MEMRD == desc->mode)
437 src = kcalloc(desc->multi, sizeof(*src), GFP_KERNEL);
438 else
439 src = kzalloc(sizeof(*src), GFP_KERNEL);
440
441 if (!src) {
442 err = -ENOMEM;
443 goto error1;
444 }
445
446 err = src_rsc_init(src, idx, desc, mgr);
447 if (err)
448 goto error2;
449
450 *rsrc = src;
451
452 return 0;
453
454 error2:
455 kfree(src);
456 error1:
457 spin_lock_irqsave(&mgr->mgr_lock, flags);
458 if (MEMRD == desc->mode)
459 mgr_put_resource(&mgr->mgr, desc->multi, idx);
460 else
461 mgr_put_resource(&mgr->mgr, 1, idx);
462
463 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
464 return err;
465 }
466
put_src_rsc(struct src_mgr * mgr,struct src * src)467 static int put_src_rsc(struct src_mgr *mgr, struct src *src)
468 {
469 unsigned long flags;
470
471 spin_lock_irqsave(&mgr->mgr_lock, flags);
472 src->rsc.ops->master(&src->rsc);
473 if (MEMRD == src->mode)
474 mgr_put_resource(&mgr->mgr, src->multi,
475 src->rsc.ops->index(&src->rsc));
476 else
477 mgr_put_resource(&mgr->mgr, 1, src->rsc.ops->index(&src->rsc));
478
479 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
480 src_rsc_uninit(src, mgr);
481 kfree(src);
482
483 return 0;
484 }
485
src_enable_s(struct src_mgr * mgr,struct src * src)486 static int src_enable_s(struct src_mgr *mgr, struct src *src)
487 {
488 struct hw *hw = mgr->mgr.hw;
489 int i;
490
491 src->rsc.ops->master(&src->rsc);
492 for (i = 0; i < src->rsc.msr; i++) {
493 hw->src_mgr_enbs_src(mgr->mgr.ctrl_blk,
494 src->rsc.ops->index(&src->rsc));
495 src->rsc.ops->next_conj(&src->rsc);
496 }
497 src->rsc.ops->master(&src->rsc);
498
499 return 0;
500 }
501
src_enable(struct src_mgr * mgr,struct src * src)502 static int src_enable(struct src_mgr *mgr, struct src *src)
503 {
504 struct hw *hw = mgr->mgr.hw;
505 int i;
506
507 src->rsc.ops->master(&src->rsc);
508 for (i = 0; i < src->rsc.msr; i++) {
509 hw->src_mgr_enb_src(mgr->mgr.ctrl_blk,
510 src->rsc.ops->index(&src->rsc));
511 src->rsc.ops->next_conj(&src->rsc);
512 }
513 src->rsc.ops->master(&src->rsc);
514
515 return 0;
516 }
517
src_disable(struct src_mgr * mgr,struct src * src)518 static int src_disable(struct src_mgr *mgr, struct src *src)
519 {
520 struct hw *hw = mgr->mgr.hw;
521 int i;
522
523 src->rsc.ops->master(&src->rsc);
524 for (i = 0; i < src->rsc.msr; i++) {
525 hw->src_mgr_dsb_src(mgr->mgr.ctrl_blk,
526 src->rsc.ops->index(&src->rsc));
527 src->rsc.ops->next_conj(&src->rsc);
528 }
529 src->rsc.ops->master(&src->rsc);
530
531 return 0;
532 }
533
src_mgr_commit_write(struct src_mgr * mgr)534 static int src_mgr_commit_write(struct src_mgr *mgr)
535 {
536 struct hw *hw = mgr->mgr.hw;
537
538 hw->src_mgr_commit_write(hw, mgr->mgr.ctrl_blk);
539
540 return 0;
541 }
542
src_mgr_create(struct hw * hw,struct src_mgr ** rsrc_mgr)543 int src_mgr_create(struct hw *hw, struct src_mgr **rsrc_mgr)
544 {
545 int err, i;
546 struct src_mgr *src_mgr;
547
548 *rsrc_mgr = NULL;
549 src_mgr = kzalloc(sizeof(*src_mgr), GFP_KERNEL);
550 if (!src_mgr)
551 return -ENOMEM;
552
553 err = rsc_mgr_init(&src_mgr->mgr, SRC, SRC_RESOURCE_NUM, hw);
554 if (err)
555 goto error1;
556
557 spin_lock_init(&src_mgr->mgr_lock);
558 conj_mask = hw->src_dirty_conj_mask();
559
560 src_mgr->get_src = get_src_rsc;
561 src_mgr->put_src = put_src_rsc;
562 src_mgr->src_enable_s = src_enable_s;
563 src_mgr->src_enable = src_enable;
564 src_mgr->src_disable = src_disable;
565 src_mgr->commit_write = src_mgr_commit_write;
566 src_mgr->card = hw->card;
567
568 /* Disable all SRC resources. */
569 for (i = 0; i < 256; i++)
570 hw->src_mgr_dsb_src(src_mgr->mgr.ctrl_blk, i);
571
572 hw->src_mgr_commit_write(hw, src_mgr->mgr.ctrl_blk);
573
574 *rsrc_mgr = src_mgr;
575
576 return 0;
577
578 error1:
579 kfree(src_mgr);
580 return err;
581 }
582
src_mgr_destroy(struct src_mgr * src_mgr)583 int src_mgr_destroy(struct src_mgr *src_mgr)
584 {
585 rsc_mgr_uninit(&src_mgr->mgr);
586 kfree(src_mgr);
587
588 return 0;
589 }
590
591 /* SRCIMP resource manager operations */
592
srcimp_master(struct rsc * rsc)593 static void srcimp_master(struct rsc *rsc)
594 {
595 rsc->conj = 0;
596 rsc->idx = container_of(rsc, struct srcimp, rsc)->idx[0];
597 }
598
srcimp_next_conj(struct rsc * rsc)599 static void srcimp_next_conj(struct rsc *rsc)
600 {
601 rsc->conj++;
602 }
603
srcimp_index(const struct rsc * rsc)604 static int srcimp_index(const struct rsc *rsc)
605 {
606 return container_of(rsc, struct srcimp, rsc)->idx[rsc->conj];
607 }
608
609 static const struct rsc_ops srcimp_basic_rsc_ops = {
610 .master = srcimp_master,
611 .next_conj = srcimp_next_conj,
612 .index = srcimp_index,
613 .output_slot = NULL,
614 };
615
srcimp_map(struct srcimp * srcimp,struct src * src,struct rsc * input)616 static int srcimp_map(struct srcimp *srcimp, struct src *src, struct rsc *input)
617 {
618 struct imapper *entry;
619 int i;
620
621 srcimp->rsc.ops->master(&srcimp->rsc);
622 src->rsc.ops->master(&src->rsc);
623 input->ops->master(input);
624
625 /* Program master and conjugate resources */
626 for (i = 0; i < srcimp->rsc.msr; i++) {
627 entry = &srcimp->imappers[i];
628 entry->slot = input->ops->output_slot(input);
629 entry->user = src->rsc.ops->index(&src->rsc);
630 entry->addr = srcimp->rsc.ops->index(&srcimp->rsc);
631 srcimp->mgr->imap_add(srcimp->mgr, entry);
632 srcimp->mapped |= (0x1 << i);
633
634 srcimp->rsc.ops->next_conj(&srcimp->rsc);
635 input->ops->next_conj(input);
636 }
637
638 srcimp->rsc.ops->master(&srcimp->rsc);
639 input->ops->master(input);
640
641 return 0;
642 }
643
srcimp_unmap(struct srcimp * srcimp)644 static int srcimp_unmap(struct srcimp *srcimp)
645 {
646 int i;
647
648 /* Program master and conjugate resources */
649 for (i = 0; i < srcimp->rsc.msr; i++) {
650 if (srcimp->mapped & (0x1 << i)) {
651 srcimp->mgr->imap_delete(srcimp->mgr,
652 &srcimp->imappers[i]);
653 srcimp->mapped &= ~(0x1 << i);
654 }
655 }
656
657 return 0;
658 }
659
660 static const struct srcimp_rsc_ops srcimp_ops = {
661 .map = srcimp_map,
662 .unmap = srcimp_unmap
663 };
664
srcimp_rsc_init(struct srcimp * srcimp,const struct srcimp_desc * desc,struct srcimp_mgr * mgr)665 static int srcimp_rsc_init(struct srcimp *srcimp,
666 const struct srcimp_desc *desc,
667 struct srcimp_mgr *mgr)
668 {
669 int err;
670
671 err = rsc_init(&srcimp->rsc, srcimp->idx[0],
672 SRCIMP, desc->msr, mgr->mgr.hw);
673 if (err)
674 return err;
675
676 /* Reserve memory for imapper nodes */
677 srcimp->imappers = kcalloc(desc->msr, sizeof(struct imapper),
678 GFP_KERNEL);
679 if (!srcimp->imappers) {
680 err = -ENOMEM;
681 goto error1;
682 }
683
684 /* Set srcimp specific operations */
685 srcimp->rsc.ops = &srcimp_basic_rsc_ops;
686 srcimp->ops = &srcimp_ops;
687 srcimp->mgr = mgr;
688
689 srcimp->rsc.ops->master(&srcimp->rsc);
690
691 return 0;
692
693 error1:
694 rsc_uninit(&srcimp->rsc);
695 return err;
696 }
697
srcimp_rsc_uninit(struct srcimp * srcimp)698 static int srcimp_rsc_uninit(struct srcimp *srcimp)
699 {
700 kfree(srcimp->imappers);
701 srcimp->imappers = NULL;
702 srcimp->ops = NULL;
703 srcimp->mgr = NULL;
704 rsc_uninit(&srcimp->rsc);
705
706 return 0;
707 }
708
get_srcimp_rsc(struct srcimp_mgr * mgr,const struct srcimp_desc * desc,struct srcimp ** rsrcimp)709 static int get_srcimp_rsc(struct srcimp_mgr *mgr,
710 const struct srcimp_desc *desc,
711 struct srcimp **rsrcimp)
712 {
713 int err, i;
714 unsigned int idx;
715 struct srcimp *srcimp;
716 unsigned long flags;
717
718 *rsrcimp = NULL;
719
720 /* Allocate mem for SRCIMP resource */
721 srcimp = kzalloc(sizeof(*srcimp), GFP_KERNEL);
722 if (!srcimp)
723 return -ENOMEM;
724
725 /* Check whether there are sufficient SRCIMP resources. */
726 err = 0;
727 spin_lock_irqsave(&mgr->mgr_lock, flags);
728 for (i = 0; i < desc->msr; i++) {
729 err = mgr_get_resource(&mgr->mgr, 1, &idx);
730 if (err)
731 break;
732
733 srcimp->idx[i] = idx;
734 }
735 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
736 if (err) {
737 dev_err(mgr->card->dev,
738 "Can't meet SRCIMP resource request!\n");
739 goto error1;
740 }
741
742 err = srcimp_rsc_init(srcimp, desc, mgr);
743 if (err)
744 goto error1;
745
746 *rsrcimp = srcimp;
747
748 return 0;
749
750 error1:
751 spin_lock_irqsave(&mgr->mgr_lock, flags);
752 for (i--; i >= 0; i--)
753 mgr_put_resource(&mgr->mgr, 1, srcimp->idx[i]);
754
755 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
756 kfree(srcimp);
757 return err;
758 }
759
put_srcimp_rsc(struct srcimp_mgr * mgr,struct srcimp * srcimp)760 static int put_srcimp_rsc(struct srcimp_mgr *mgr, struct srcimp *srcimp)
761 {
762 unsigned long flags;
763 int i;
764
765 spin_lock_irqsave(&mgr->mgr_lock, flags);
766 for (i = 0; i < srcimp->rsc.msr; i++)
767 mgr_put_resource(&mgr->mgr, 1, srcimp->idx[i]);
768
769 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
770 srcimp_rsc_uninit(srcimp);
771 kfree(srcimp);
772
773 return 0;
774 }
775
srcimp_map_op(void * data,struct imapper * entry)776 static int srcimp_map_op(void *data, struct imapper *entry)
777 {
778 struct rsc_mgr *mgr = &((struct srcimp_mgr *)data)->mgr;
779 struct hw *hw = mgr->hw;
780
781 hw->srcimp_mgr_set_imaparc(mgr->ctrl_blk, entry->slot);
782 hw->srcimp_mgr_set_imapuser(mgr->ctrl_blk, entry->user);
783 hw->srcimp_mgr_set_imapnxt(mgr->ctrl_blk, entry->next);
784 hw->srcimp_mgr_set_imapaddr(mgr->ctrl_blk, entry->addr);
785 hw->srcimp_mgr_commit_write(mgr->hw, mgr->ctrl_blk);
786
787 return 0;
788 }
789
srcimp_imap_add(struct srcimp_mgr * mgr,struct imapper * entry)790 static int srcimp_imap_add(struct srcimp_mgr *mgr, struct imapper *entry)
791 {
792 unsigned long flags;
793 int err;
794
795 spin_lock_irqsave(&mgr->imap_lock, flags);
796 if ((0 == entry->addr) && (mgr->init_imap_added)) {
797 input_mapper_delete(&mgr->imappers,
798 mgr->init_imap, srcimp_map_op, mgr);
799 mgr->init_imap_added = 0;
800 }
801 err = input_mapper_add(&mgr->imappers, entry, srcimp_map_op, mgr);
802 spin_unlock_irqrestore(&mgr->imap_lock, flags);
803
804 return err;
805 }
806
srcimp_imap_delete(struct srcimp_mgr * mgr,struct imapper * entry)807 static int srcimp_imap_delete(struct srcimp_mgr *mgr, struct imapper *entry)
808 {
809 unsigned long flags;
810 int err;
811
812 spin_lock_irqsave(&mgr->imap_lock, flags);
813 err = input_mapper_delete(&mgr->imappers, entry, srcimp_map_op, mgr);
814 if (list_empty(&mgr->imappers)) {
815 input_mapper_add(&mgr->imappers, mgr->init_imap,
816 srcimp_map_op, mgr);
817 mgr->init_imap_added = 1;
818 }
819 spin_unlock_irqrestore(&mgr->imap_lock, flags);
820
821 return err;
822 }
823
srcimp_mgr_create(struct hw * hw,struct srcimp_mgr ** rsrcimp_mgr)824 int srcimp_mgr_create(struct hw *hw, struct srcimp_mgr **rsrcimp_mgr)
825 {
826 int err;
827 struct srcimp_mgr *srcimp_mgr;
828 struct imapper *entry;
829
830 *rsrcimp_mgr = NULL;
831 srcimp_mgr = kzalloc(sizeof(*srcimp_mgr), GFP_KERNEL);
832 if (!srcimp_mgr)
833 return -ENOMEM;
834
835 err = rsc_mgr_init(&srcimp_mgr->mgr, SRCIMP, SRCIMP_RESOURCE_NUM, hw);
836 if (err)
837 goto error1;
838
839 spin_lock_init(&srcimp_mgr->mgr_lock);
840 spin_lock_init(&srcimp_mgr->imap_lock);
841 INIT_LIST_HEAD(&srcimp_mgr->imappers);
842 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
843 if (!entry) {
844 err = -ENOMEM;
845 goto error2;
846 }
847 entry->slot = entry->addr = entry->next = entry->user = 0;
848 list_add(&entry->list, &srcimp_mgr->imappers);
849 srcimp_mgr->init_imap = entry;
850 srcimp_mgr->init_imap_added = 1;
851
852 srcimp_mgr->get_srcimp = get_srcimp_rsc;
853 srcimp_mgr->put_srcimp = put_srcimp_rsc;
854 srcimp_mgr->imap_add = srcimp_imap_add;
855 srcimp_mgr->imap_delete = srcimp_imap_delete;
856 srcimp_mgr->card = hw->card;
857
858 *rsrcimp_mgr = srcimp_mgr;
859
860 return 0;
861
862 error2:
863 rsc_mgr_uninit(&srcimp_mgr->mgr);
864 error1:
865 kfree(srcimp_mgr);
866 return err;
867 }
868
srcimp_mgr_destroy(struct srcimp_mgr * srcimp_mgr)869 int srcimp_mgr_destroy(struct srcimp_mgr *srcimp_mgr)
870 {
871 unsigned long flags;
872
873 /* free src input mapper list */
874 spin_lock_irqsave(&srcimp_mgr->imap_lock, flags);
875 free_input_mapper_list(&srcimp_mgr->imappers);
876 spin_unlock_irqrestore(&srcimp_mgr->imap_lock, flags);
877
878 rsc_mgr_uninit(&srcimp_mgr->mgr);
879 kfree(srcimp_mgr);
880
881 return 0;
882 }
883