1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
4 *
5 * @File ctamixer.c
6 *
7 * @Brief
8 * This file contains the implementation of the Audio Mixer
9 * resource management object.
10 *
11 * @Author Liu Chun
12 * @Date May 21 2008
13 */
14
15 #include "ctamixer.h"
16 #include "cthardware.h"
17 #include <linux/slab.h>
18
19 #define AMIXER_RESOURCE_NUM 256
20 #define SUM_RESOURCE_NUM 256
21
22 #define AMIXER_Y_IMMEDIATE 1
23
24 #define BLANK_SLOT 4094
25
26 static void amixer_master(struct rsc *rsc)
27 {
28 rsc->conj = 0;
29 rsc->idx = container_of(rsc, struct amixer, rsc)->idx[0];
30 }
31
32 static void amixer_next_conj(struct rsc *rsc)
33 {
34 rsc->conj++;
35 }
36
37 static int amixer_index(const struct rsc *rsc)
38 {
39 return container_of(rsc, struct amixer, rsc)->idx[rsc->conj];
40 }
41
42 static int amixer_output_slot(const struct rsc *rsc)
43 {
44 return (amixer_index(rsc) << 4) + 0x4;
45 }
46
47 static const struct rsc_ops amixer_basic_rsc_ops = {
48 .master = amixer_master,
49 .next_conj = amixer_next_conj,
50 .index = amixer_index,
51 .output_slot = amixer_output_slot,
52 };
53
54 static int amixer_set_input(struct amixer *amixer, struct rsc *rsc)
55 {
56 struct hw *hw;
57
58 hw = amixer->rsc.hw;
59 hw->amixer_set_mode(amixer->rsc.ctrl_blk, AMIXER_Y_IMMEDIATE);
60 amixer->input = rsc;
61 if (!rsc)
62 hw->amixer_set_x(amixer->rsc.ctrl_blk, BLANK_SLOT);
63 else
64 hw->amixer_set_x(amixer->rsc.ctrl_blk,
65 rsc->ops->output_slot(rsc));
66
67 return 0;
68 }
69
70 /* y is a 14-bit immediate constant */
71 static int amixer_set_y(struct amixer *amixer, unsigned int y)
72 {
73 struct hw *hw;
74
75 hw = amixer->rsc.hw;
76 hw->amixer_set_y(amixer->rsc.ctrl_blk, y);
77
78 return 0;
79 }
80
81 static int amixer_set_invalid_squash(struct amixer *amixer, unsigned int iv)
82 {
83 struct hw *hw;
84
85 hw = amixer->rsc.hw;
86 hw->amixer_set_iv(amixer->rsc.ctrl_blk, iv);
87
88 return 0;
89 }
90
91 static int amixer_set_sum(struct amixer *amixer, struct sum *sum)
92 {
93 struct hw *hw;
94
95 hw = amixer->rsc.hw;
96 amixer->sum = sum;
97 if (!sum) {
98 hw->amixer_set_se(amixer->rsc.ctrl_blk, 0);
99 } else {
100 hw->amixer_set_se(amixer->rsc.ctrl_blk, 1);
101 hw->amixer_set_sadr(amixer->rsc.ctrl_blk,
102 sum->rsc.ops->index(&sum->rsc));
103 }
104
105 return 0;
106 }
107
108 static int amixer_commit_write(struct amixer *amixer)
109 {
110 struct hw *hw;
111 unsigned int index;
112 int i;
113 struct rsc *input;
114 struct sum *sum;
115
116 hw = amixer->rsc.hw;
117 input = amixer->input;
118 sum = amixer->sum;
119
120 /* Program master and conjugate resources */
121 amixer->rsc.ops->master(&amixer->rsc);
122 if (input)
123 input->ops->master(input);
124
125 if (sum)
126 sum->rsc.ops->master(&sum->rsc);
127
128 for (i = 0; i < amixer->rsc.msr; i++) {
129 hw->amixer_set_dirty_all(amixer->rsc.ctrl_blk);
130 if (input) {
131 hw->amixer_set_x(amixer->rsc.ctrl_blk,
132 input->ops->output_slot(input));
133 input->ops->next_conj(input);
134 }
135 if (sum) {
136 hw->amixer_set_sadr(amixer->rsc.ctrl_blk,
137 sum->rsc.ops->index(&sum->rsc));
138 sum->rsc.ops->next_conj(&sum->rsc);
139 }
140 index = amixer->rsc.ops->output_slot(&amixer->rsc);
141 hw->amixer_commit_write(hw, index, amixer->rsc.ctrl_blk);
142 amixer->rsc.ops->next_conj(&amixer->rsc);
143 }
144 amixer->rsc.ops->master(&amixer->rsc);
145 if (input)
146 input->ops->master(input);
147
148 if (sum)
149 sum->rsc.ops->master(&sum->rsc);
150
151 return 0;
152 }
153
154 static int amixer_commit_raw_write(struct amixer *amixer)
155 {
156 struct hw *hw;
157 unsigned int index;
158
159 hw = amixer->rsc.hw;
160 index = amixer->rsc.ops->output_slot(&amixer->rsc);
161 hw->amixer_commit_write(hw, index, amixer->rsc.ctrl_blk);
162
163 return 0;
164 }
165
166 static int amixer_get_y(struct amixer *amixer)
167 {
168 struct hw *hw;
169
170 hw = amixer->rsc.hw;
171 return hw->amixer_get_y(amixer->rsc.ctrl_blk);
172 }
173
174 static int amixer_setup(struct amixer *amixer, struct rsc *input,
175 unsigned int scale, struct sum *sum)
176 {
177 amixer_set_input(amixer, input);
178 amixer_set_y(amixer, scale);
179 amixer_set_sum(amixer, sum);
180 amixer_commit_write(amixer);
181 return 0;
182 }
183
184 static const struct amixer_rsc_ops amixer_ops = {
185 .set_input = amixer_set_input,
186 .set_invalid_squash = amixer_set_invalid_squash,
187 .set_scale = amixer_set_y,
188 .set_sum = amixer_set_sum,
189 .commit_write = amixer_commit_write,
190 .commit_raw_write = amixer_commit_raw_write,
191 .setup = amixer_setup,
192 .get_scale = amixer_get_y,
193 };
194
195 static int amixer_rsc_init(struct amixer *amixer,
196 const struct amixer_desc *desc,
197 struct amixer_mgr *mgr)
198 {
199 int err;
200
201 err = rsc_init(&amixer->rsc, amixer->idx[0],
202 AMIXER, desc->msr, mgr->mgr.hw);
203 if (err)
204 return err;
205
206 /* Set amixer specific operations */
207 amixer->rsc.ops = &amixer_basic_rsc_ops;
208 amixer->ops = &amixer_ops;
209 amixer->input = NULL;
210 amixer->sum = NULL;
211
212 amixer_setup(amixer, NULL, 0, NULL);
213
214 return 0;
215 }
216
217 static int amixer_rsc_uninit(struct amixer *amixer)
218 {
219 amixer_setup(amixer, NULL, 0, NULL);
220 rsc_uninit(&amixer->rsc);
221 amixer->ops = NULL;
222 amixer->input = NULL;
223 amixer->sum = NULL;
224 return 0;
225 }
226
227 static int get_amixer_rsc(struct amixer_mgr *mgr,
228 const struct amixer_desc *desc,
229 struct amixer **ramixer)
230 {
231 int err, i;
232 unsigned int idx;
233 struct amixer *amixer;
234 unsigned long flags;
235
236 *ramixer = NULL;
237
238 /* Allocate mem for amixer resource */
239 amixer = kzalloc(sizeof(*amixer), GFP_KERNEL);
240 if (!amixer)
241 return -ENOMEM;
242
243 /* Check whether there are sufficient
244 * amixer resources to meet request. */
245 err = 0;
246 spin_lock_irqsave(&mgr->mgr_lock, flags);
247 for (i = 0; i < desc->msr; i++) {
248 err = mgr_get_resource(&mgr->mgr, 1, &idx);
249 if (err)
250 break;
251
252 amixer->idx[i] = idx;
253 }
254 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
255 if (err) {
256 dev_err(mgr->card->dev,
257 "Can't meet AMIXER resource request!\n");
258 goto error;
259 }
260
261 err = amixer_rsc_init(amixer, desc, mgr);
262 if (err)
263 goto error;
264
265 *ramixer = amixer;
266
267 return 0;
268
269 error:
270 spin_lock_irqsave(&mgr->mgr_lock, flags);
271 for (i--; i >= 0; i--)
272 mgr_put_resource(&mgr->mgr, 1, amixer->idx[i]);
273
274 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
275 kfree(amixer);
276 return err;
277 }
278
279 static int put_amixer_rsc(struct amixer_mgr *mgr, struct amixer *amixer)
280 {
281 unsigned long flags;
282 int i;
283
284 spin_lock_irqsave(&mgr->mgr_lock, flags);
285 for (i = 0; i < amixer->rsc.msr; i++)
286 mgr_put_resource(&mgr->mgr, 1, amixer->idx[i]);
287
288 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
289 amixer_rsc_uninit(amixer);
290 kfree(amixer);
291
292 return 0;
293 }
294
295 int amixer_mgr_create(struct hw *hw, void **ramixer_mgr)
296 {
297 int err;
298 struct amixer_mgr *amixer_mgr;
299
300 *ramixer_mgr = NULL;
301 amixer_mgr = kzalloc(sizeof(*amixer_mgr), GFP_KERNEL);
302 if (!amixer_mgr)
303 return -ENOMEM;
304
305 err = rsc_mgr_init(&amixer_mgr->mgr, AMIXER, AMIXER_RESOURCE_NUM, hw);
306 if (err)
307 goto error;
308
309 spin_lock_init(&amixer_mgr->mgr_lock);
310
311 amixer_mgr->get_amixer = get_amixer_rsc;
312 amixer_mgr->put_amixer = put_amixer_rsc;
313 amixer_mgr->card = hw->card;
314
315 *ramixer_mgr = amixer_mgr;
316
317 return 0;
318
319 error:
320 kfree(amixer_mgr);
321 return err;
322 }
323
324 int amixer_mgr_destroy(void *ptr)
325 {
326 struct amixer_mgr *amixer_mgr = ptr;
327 rsc_mgr_uninit(&amixer_mgr->mgr);
328 kfree(amixer_mgr);
329 return 0;
330 }
331
332 /* SUM resource management */
333
334 static void sum_master(struct rsc *rsc)
335 {
336 rsc->conj = 0;
337 rsc->idx = container_of(rsc, struct sum, rsc)->idx[0];
338 }
339
340 static void sum_next_conj(struct rsc *rsc)
341 {
342 rsc->conj++;
343 }
344
345 static int sum_index(const struct rsc *rsc)
346 {
347 return container_of(rsc, struct sum, rsc)->idx[rsc->conj];
348 }
349
350 static int sum_output_slot(const struct rsc *rsc)
351 {
352 return (sum_index(rsc) << 4) + 0xc;
353 }
354
355 static const struct rsc_ops sum_basic_rsc_ops = {
356 .master = sum_master,
357 .next_conj = sum_next_conj,
358 .index = sum_index,
359 .output_slot = sum_output_slot,
360 };
361
362 static int sum_rsc_init(struct sum *sum,
363 const struct sum_desc *desc,
364 struct sum_mgr *mgr)
365 {
366 int err;
367
368 err = rsc_init(&sum->rsc, sum->idx[0], SUM, desc->msr, mgr->mgr.hw);
369 if (err)
370 return err;
371
372 sum->rsc.ops = &sum_basic_rsc_ops;
373
374 return 0;
375 }
376
377 static int sum_rsc_uninit(struct sum *sum)
378 {
379 rsc_uninit(&sum->rsc);
380 return 0;
381 }
382
383 static int get_sum_rsc(struct sum_mgr *mgr,
384 const struct sum_desc *desc,
385 struct sum **rsum)
386 {
387 int err, i;
388 unsigned int idx;
389 struct sum *sum;
390 unsigned long flags;
391
392 *rsum = NULL;
393
394 /* Allocate mem for sum resource */
395 sum = kzalloc(sizeof(*sum), GFP_KERNEL);
396 if (!sum)
397 return -ENOMEM;
398
399 /* Check whether there are sufficient sum resources to meet request. */
400 err = 0;
401 spin_lock_irqsave(&mgr->mgr_lock, flags);
402 for (i = 0; i < desc->msr; i++) {
403 err = mgr_get_resource(&mgr->mgr, 1, &idx);
404 if (err)
405 break;
406
407 sum->idx[i] = idx;
408 }
409 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
410 if (err) {
411 dev_err(mgr->card->dev,
412 "Can't meet SUM resource request!\n");
413 goto error;
414 }
415
416 err = sum_rsc_init(sum, desc, mgr);
417 if (err)
418 goto error;
419
420 *rsum = sum;
421
422 return 0;
423
424 error:
425 spin_lock_irqsave(&mgr->mgr_lock, flags);
426 for (i--; i >= 0; i--)
427 mgr_put_resource(&mgr->mgr, 1, sum->idx[i]);
428
429 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
430 kfree(sum);
431 return err;
432 }
433
434 static int put_sum_rsc(struct sum_mgr *mgr, struct sum *sum)
435 {
436 unsigned long flags;
437 int i;
438
439 spin_lock_irqsave(&mgr->mgr_lock, flags);
440 for (i = 0; i < sum->rsc.msr; i++)
441 mgr_put_resource(&mgr->mgr, 1, sum->idx[i]);
442
443 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
444 sum_rsc_uninit(sum);
445 kfree(sum);
446
447 return 0;
448 }
449
450 int sum_mgr_create(struct hw *hw, void **rsum_mgr)
451 {
452 int err;
453 struct sum_mgr *sum_mgr;
454
455 *rsum_mgr = NULL;
456 sum_mgr = kzalloc(sizeof(*sum_mgr), GFP_KERNEL);
457 if (!sum_mgr)
458 return -ENOMEM;
459
460 err = rsc_mgr_init(&sum_mgr->mgr, SUM, SUM_RESOURCE_NUM, hw);
461 if (err)
462 goto error;
463
464 spin_lock_init(&sum_mgr->mgr_lock);
465
466 sum_mgr->get_sum = get_sum_rsc;
467 sum_mgr->put_sum = put_sum_rsc;
468 sum_mgr->card = hw->card;
469
470 *rsum_mgr = sum_mgr;
471
472 return 0;
473
474 error:
475 kfree(sum_mgr);
476 return err;
477 }
478
479 int sum_mgr_destroy(void *ptr)
480 {
481 struct sum_mgr *sum_mgr = ptr;
482 rsc_mgr_uninit(&sum_mgr->mgr);
483 kfree(sum_mgr);
484 return 0;
485 }
486
487
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