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 int srcimp_master(struct rsc *rsc)
594 {
595 rsc->conj = 0;
596 return rsc->idx = container_of(rsc, struct srcimp, rsc)->idx[0];
597 }
598
srcimp_next_conj(struct rsc * rsc)599 static int srcimp_next_conj(struct rsc *rsc)
600 {
601 rsc->conj++;
602 return container_of(rsc, struct srcimp, rsc)->idx[rsc->conj];
603 }
604
srcimp_index(const struct rsc * rsc)605 static int srcimp_index(const struct rsc *rsc)
606 {
607 return container_of(rsc, struct srcimp, rsc)->idx[rsc->conj];
608 }
609
610 static const struct rsc_ops srcimp_basic_rsc_ops = {
611 .master = srcimp_master,
612 .next_conj = srcimp_next_conj,
613 .index = srcimp_index,
614 .output_slot = NULL,
615 };
616
srcimp_map(struct srcimp * srcimp,struct src * src,struct rsc * input)617 static int srcimp_map(struct srcimp *srcimp, struct src *src, struct rsc *input)
618 {
619 struct imapper *entry;
620 int i;
621
622 srcimp->rsc.ops->master(&srcimp->rsc);
623 src->rsc.ops->master(&src->rsc);
624 input->ops->master(input);
625
626 /* Program master and conjugate resources */
627 for (i = 0; i < srcimp->rsc.msr; i++) {
628 entry = &srcimp->imappers[i];
629 entry->slot = input->ops->output_slot(input);
630 entry->user = src->rsc.ops->index(&src->rsc);
631 entry->addr = srcimp->rsc.ops->index(&srcimp->rsc);
632 srcimp->mgr->imap_add(srcimp->mgr, entry);
633 srcimp->mapped |= (0x1 << i);
634
635 srcimp->rsc.ops->next_conj(&srcimp->rsc);
636 input->ops->next_conj(input);
637 }
638
639 srcimp->rsc.ops->master(&srcimp->rsc);
640 input->ops->master(input);
641
642 return 0;
643 }
644
srcimp_unmap(struct srcimp * srcimp)645 static int srcimp_unmap(struct srcimp *srcimp)
646 {
647 int i;
648
649 /* Program master and conjugate resources */
650 for (i = 0; i < srcimp->rsc.msr; i++) {
651 if (srcimp->mapped & (0x1 << i)) {
652 srcimp->mgr->imap_delete(srcimp->mgr,
653 &srcimp->imappers[i]);
654 srcimp->mapped &= ~(0x1 << i);
655 }
656 }
657
658 return 0;
659 }
660
661 static const struct srcimp_rsc_ops srcimp_ops = {
662 .map = srcimp_map,
663 .unmap = srcimp_unmap
664 };
665
srcimp_rsc_init(struct srcimp * srcimp,const struct srcimp_desc * desc,struct srcimp_mgr * mgr)666 static int srcimp_rsc_init(struct srcimp *srcimp,
667 const struct srcimp_desc *desc,
668 struct srcimp_mgr *mgr)
669 {
670 int err;
671
672 err = rsc_init(&srcimp->rsc, srcimp->idx[0],
673 SRCIMP, desc->msr, mgr->mgr.hw);
674 if (err)
675 return err;
676
677 /* Reserve memory for imapper nodes */
678 srcimp->imappers = kcalloc(desc->msr, sizeof(struct imapper),
679 GFP_KERNEL);
680 if (!srcimp->imappers) {
681 err = -ENOMEM;
682 goto error1;
683 }
684
685 /* Set srcimp specific operations */
686 srcimp->rsc.ops = &srcimp_basic_rsc_ops;
687 srcimp->ops = &srcimp_ops;
688 srcimp->mgr = mgr;
689
690 srcimp->rsc.ops->master(&srcimp->rsc);
691
692 return 0;
693
694 error1:
695 rsc_uninit(&srcimp->rsc);
696 return err;
697 }
698
srcimp_rsc_uninit(struct srcimp * srcimp)699 static int srcimp_rsc_uninit(struct srcimp *srcimp)
700 {
701 kfree(srcimp->imappers);
702 srcimp->imappers = NULL;
703 srcimp->ops = NULL;
704 srcimp->mgr = NULL;
705 rsc_uninit(&srcimp->rsc);
706
707 return 0;
708 }
709
get_srcimp_rsc(struct srcimp_mgr * mgr,const struct srcimp_desc * desc,struct srcimp ** rsrcimp)710 static int get_srcimp_rsc(struct srcimp_mgr *mgr,
711 const struct srcimp_desc *desc,
712 struct srcimp **rsrcimp)
713 {
714 int err, i;
715 unsigned int idx;
716 struct srcimp *srcimp;
717 unsigned long flags;
718
719 *rsrcimp = NULL;
720
721 /* Allocate mem for SRCIMP resource */
722 srcimp = kzalloc(sizeof(*srcimp), GFP_KERNEL);
723 if (!srcimp)
724 return -ENOMEM;
725
726 /* Check whether there are sufficient SRCIMP resources. */
727 err = 0;
728 spin_lock_irqsave(&mgr->mgr_lock, flags);
729 for (i = 0; i < desc->msr; i++) {
730 err = mgr_get_resource(&mgr->mgr, 1, &idx);
731 if (err)
732 break;
733
734 srcimp->idx[i] = idx;
735 }
736 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
737 if (err) {
738 dev_err(mgr->card->dev,
739 "Can't meet SRCIMP resource request!\n");
740 goto error1;
741 }
742
743 err = srcimp_rsc_init(srcimp, desc, mgr);
744 if (err)
745 goto error1;
746
747 *rsrcimp = srcimp;
748
749 return 0;
750
751 error1:
752 spin_lock_irqsave(&mgr->mgr_lock, flags);
753 for (i--; i >= 0; i--)
754 mgr_put_resource(&mgr->mgr, 1, srcimp->idx[i]);
755
756 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
757 kfree(srcimp);
758 return err;
759 }
760
put_srcimp_rsc(struct srcimp_mgr * mgr,struct srcimp * srcimp)761 static int put_srcimp_rsc(struct srcimp_mgr *mgr, struct srcimp *srcimp)
762 {
763 unsigned long flags;
764 int i;
765
766 spin_lock_irqsave(&mgr->mgr_lock, flags);
767 for (i = 0; i < srcimp->rsc.msr; i++)
768 mgr_put_resource(&mgr->mgr, 1, srcimp->idx[i]);
769
770 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
771 srcimp_rsc_uninit(srcimp);
772 kfree(srcimp);
773
774 return 0;
775 }
776
srcimp_map_op(void * data,struct imapper * entry)777 static int srcimp_map_op(void *data, struct imapper *entry)
778 {
779 struct rsc_mgr *mgr = &((struct srcimp_mgr *)data)->mgr;
780 struct hw *hw = mgr->hw;
781
782 hw->srcimp_mgr_set_imaparc(mgr->ctrl_blk, entry->slot);
783 hw->srcimp_mgr_set_imapuser(mgr->ctrl_blk, entry->user);
784 hw->srcimp_mgr_set_imapnxt(mgr->ctrl_blk, entry->next);
785 hw->srcimp_mgr_set_imapaddr(mgr->ctrl_blk, entry->addr);
786 hw->srcimp_mgr_commit_write(mgr->hw, mgr->ctrl_blk);
787
788 return 0;
789 }
790
srcimp_imap_add(struct srcimp_mgr * mgr,struct imapper * entry)791 static int srcimp_imap_add(struct srcimp_mgr *mgr, struct imapper *entry)
792 {
793 unsigned long flags;
794 int err;
795
796 spin_lock_irqsave(&mgr->imap_lock, flags);
797 if ((0 == entry->addr) && (mgr->init_imap_added)) {
798 input_mapper_delete(&mgr->imappers,
799 mgr->init_imap, srcimp_map_op, mgr);
800 mgr->init_imap_added = 0;
801 }
802 err = input_mapper_add(&mgr->imappers, entry, srcimp_map_op, mgr);
803 spin_unlock_irqrestore(&mgr->imap_lock, flags);
804
805 return err;
806 }
807
srcimp_imap_delete(struct srcimp_mgr * mgr,struct imapper * entry)808 static int srcimp_imap_delete(struct srcimp_mgr *mgr, struct imapper *entry)
809 {
810 unsigned long flags;
811 int err;
812
813 spin_lock_irqsave(&mgr->imap_lock, flags);
814 err = input_mapper_delete(&mgr->imappers, entry, srcimp_map_op, mgr);
815 if (list_empty(&mgr->imappers)) {
816 input_mapper_add(&mgr->imappers, mgr->init_imap,
817 srcimp_map_op, mgr);
818 mgr->init_imap_added = 1;
819 }
820 spin_unlock_irqrestore(&mgr->imap_lock, flags);
821
822 return err;
823 }
824
srcimp_mgr_create(struct hw * hw,struct srcimp_mgr ** rsrcimp_mgr)825 int srcimp_mgr_create(struct hw *hw, struct srcimp_mgr **rsrcimp_mgr)
826 {
827 int err;
828 struct srcimp_mgr *srcimp_mgr;
829 struct imapper *entry;
830
831 *rsrcimp_mgr = NULL;
832 srcimp_mgr = kzalloc(sizeof(*srcimp_mgr), GFP_KERNEL);
833 if (!srcimp_mgr)
834 return -ENOMEM;
835
836 err = rsc_mgr_init(&srcimp_mgr->mgr, SRCIMP, SRCIMP_RESOURCE_NUM, hw);
837 if (err)
838 goto error1;
839
840 spin_lock_init(&srcimp_mgr->mgr_lock);
841 spin_lock_init(&srcimp_mgr->imap_lock);
842 INIT_LIST_HEAD(&srcimp_mgr->imappers);
843 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
844 if (!entry) {
845 err = -ENOMEM;
846 goto error2;
847 }
848 entry->slot = entry->addr = entry->next = entry->user = 0;
849 list_add(&entry->list, &srcimp_mgr->imappers);
850 srcimp_mgr->init_imap = entry;
851 srcimp_mgr->init_imap_added = 1;
852
853 srcimp_mgr->get_srcimp = get_srcimp_rsc;
854 srcimp_mgr->put_srcimp = put_srcimp_rsc;
855 srcimp_mgr->imap_add = srcimp_imap_add;
856 srcimp_mgr->imap_delete = srcimp_imap_delete;
857 srcimp_mgr->card = hw->card;
858
859 *rsrcimp_mgr = srcimp_mgr;
860
861 return 0;
862
863 error2:
864 rsc_mgr_uninit(&srcimp_mgr->mgr);
865 error1:
866 kfree(srcimp_mgr);
867 return err;
868 }
869
srcimp_mgr_destroy(struct srcimp_mgr * srcimp_mgr)870 int srcimp_mgr_destroy(struct srcimp_mgr *srcimp_mgr)
871 {
872 unsigned long flags;
873
874 /* free src input mapper list */
875 spin_lock_irqsave(&srcimp_mgr->imap_lock, flags);
876 free_input_mapper_list(&srcimp_mgr->imappers);
877 spin_unlock_irqrestore(&srcimp_mgr->imap_lock, flags);
878
879 rsc_mgr_uninit(&srcimp_mgr->mgr);
880 kfree(srcimp_mgr);
881
882 return 0;
883 }
884
