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mtd: rawnand: fsmc: Fix unchecked return value in fsmc_read_page_hwecc
[linux-2.6-block.git] / sound / drivers / dummy.c
CommitLineData
1da177e4
LT		 1/*
2 * Dummy soundcard
c1017a4c 3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
1da177e4
LT		 4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 */
20
1da177e4 21#include <linux/init.h>
6e65c1cc
TI		 22#include <linux/err.h>
23#include <linux/platform_device.h>
1da177e4
LT		 24#include <linux/jiffies.h>
25#include <linux/slab.h>
26#include <linux/time.h>
27#include <linux/wait.h>
c631d03c
TI		 28#include <linux/hrtimer.h>
29#include <linux/math64.h>
65a77217 30#include <linux/module.h>
1da177e4
LT		 31#include <sound/core.h>
32#include <sound/control.h>
fb567a8e 33#include <sound/tlv.h>
1da177e4
LT		 34#include <sound/pcm.h>
35#include <sound/rawmidi.h>
9b151fec 36#include <sound/info.h>
1da177e4
LT		 37#include <sound/initval.h>
38
c1017a4c 39MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
1da177e4
LT		 40MODULE_DESCRIPTION("Dummy soundcard (/dev/null)");
41MODULE_LICENSE("GPL");
42MODULE_SUPPORTED_DEVICE("{{ALSA,Dummy soundcard}}");
43
44#define MAX_PCM_DEVICES 4
b888d1ce 45#define MAX_PCM_SUBSTREAMS 128
1da177e4
LT		 46#define MAX_MIDI_DEVICES 2
47
1da177e4 48/* defaults */
1da177e4 49#define MAX_BUFFER_SIZE (64*1024)
d5e1ca05 50#define MIN_PERIOD_SIZE 64
2ad5dd8d 51#define MAX_PERIOD_SIZE MAX_BUFFER_SIZE
1da177e4 52#define USE_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE)
1da177e4
LT		 53#define USE_RATE SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000
54#define USE_RATE_MIN 5500
55#define USE_RATE_MAX 48000
1da177e4 56#define USE_CHANNELS_MIN 1
1da177e4 57#define USE_CHANNELS_MAX 2
1da177e4 58#define USE_PERIODS_MIN 1
1da177e4 59#define USE_PERIODS_MAX 1024
1da177e4
LT		 60
61static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
62static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
a67ff6a5 63static bool enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0};
d5e1ca05 64static char *model[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = NULL};
1da177e4
LT		 65static int pcm_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
66static int pcm_substreams[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 8};
67//static int midi_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
c631d03c 68#ifdef CONFIG_HIGH_RES_TIMERS
a67ff6a5 69static bool hrtimer = 1;
c631d03c 70#endif
a67ff6a5 71static bool fake_buffer = 1;
1da177e4
LT		 72
73module_param_array(index, int, NULL, 0444);
74MODULE_PARM_DESC(index, "Index value for dummy soundcard.");
75module_param_array(id, charp, NULL, 0444);
76MODULE_PARM_DESC(id, "ID string for dummy soundcard.");
77module_param_array(enable, bool, NULL, 0444);
78MODULE_PARM_DESC(enable, "Enable this dummy soundcard.");
d5e1ca05
JK		 79module_param_array(model, charp, NULL, 0444);
80MODULE_PARM_DESC(model, "Soundcard model.");
1da177e4
LT		 81module_param_array(pcm_devs, int, NULL, 0444);
82MODULE_PARM_DESC(pcm_devs, "PCM devices # (0-4) for dummy driver.");
83module_param_array(pcm_substreams, int, NULL, 0444);
23aebca4 84MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-128) for dummy driver.");
1da177e4
LT		 85//module_param_array(midi_devs, int, NULL, 0444);
86//MODULE_PARM_DESC(midi_devs, "MIDI devices # (0-2) for dummy driver.");
a68c4d11
TI		 87module_param(fake_buffer, bool, 0444);
88MODULE_PARM_DESC(fake_buffer, "Fake buffer allocations.");
c631d03c 89#ifdef CONFIG_HIGH_RES_TIMERS
ddce57a6 90module_param(hrtimer, bool, 0644);
c631d03c
TI		 91MODULE_PARM_DESC(hrtimer, "Use hrtimer as the timer source.");
92#endif
1da177e4 93
f7a9275d
CL		 94static struct platform_device *devices[SNDRV_CARDS];
95
1da177e4
LT		 96#define MIXER_ADDR_MASTER 0
97#define MIXER_ADDR_LINE 1
98#define MIXER_ADDR_MIC 2
99#define MIXER_ADDR_SYNTH 3
100#define MIXER_ADDR_CD 4
101#define MIXER_ADDR_LAST 4
102
c631d03c
TI		 103struct dummy_timer_ops {
104 int (*create)(struct snd_pcm_substream *);
105 void (*free)(struct snd_pcm_substream *);
106 int (*prepare)(struct snd_pcm_substream *);
107 int (*start)(struct snd_pcm_substream *);
108 int (*stop)(struct snd_pcm_substream *);
109 snd_pcm_uframes_t (*pointer)(struct snd_pcm_substream *);
110};
111
ddce57a6
TI		 112#define get_dummy_ops(substream) \
113 (*(const struct dummy_timer_ops **)(substream)->runtime->private_data)
114
d5e1ca05
JK		 115struct dummy_model {
116 const char *name;
117 int (*playback_constraints)(struct snd_pcm_runtime *runtime);
118 int (*capture_constraints)(struct snd_pcm_runtime *runtime);
119 u64 formats;
120 size_t buffer_bytes_max;
121 size_t period_bytes_min;
122 size_t period_bytes_max;
123 unsigned int periods_min;
124 unsigned int periods_max;
125 unsigned int rates;
126 unsigned int rate_min;
127 unsigned int rate_max;
128 unsigned int channels_min;
129 unsigned int channels_max;
130};
131
4a4d2cfd
TI		 132struct snd_dummy {
133 struct snd_card *card;
d5e1ca05 134 struct dummy_model *model;
6e65c1cc 135 struct snd_pcm *pcm;
d5e1ca05 136 struct snd_pcm_hardware pcm_hw;
1da177e4
LT		 137 spinlock_t mixer_lock;
138 int mixer_volume[MIXER_ADDR_LAST+1][2];
139 int capture_source[MIXER_ADDR_LAST+1][2];
16e43467
CL		 140 int iobox;
141 struct snd_kcontrol *cd_volume_ctl;
142 struct snd_kcontrol *cd_switch_ctl;
4a4d2cfd 143};
1da177e4 144
d5e1ca05
JK		 145/*
146 * card models
147 */
148
149static int emu10k1_playback_constraints(struct snd_pcm_runtime *runtime)
150{
151 int err;
152 err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
153 if (err < 0)
154 return err;
155 err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 256, UINT_MAX);
156 if (err < 0)
157 return err;
158 return 0;
159}
160
e4c28688 161static struct dummy_model model_emu10k1 = {
d5e1ca05
JK		 162 .name = "emu10k1",
163 .playback_constraints = emu10k1_playback_constraints,
164 .buffer_bytes_max = 128 * 1024,
165};
166
e4c28688 167static struct dummy_model model_rme9652 = {
d5e1ca05
JK		 168 .name = "rme9652",
169 .buffer_bytes_max = 26 * 64 * 1024,
170 .formats = SNDRV_PCM_FMTBIT_S32_LE,
171 .channels_min = 26,
172 .channels_max = 26,
173 .periods_min = 2,
174 .periods_max = 2,
175};
176
e4c28688 177static struct dummy_model model_ice1712 = {
d5e1ca05
JK		 178 .name = "ice1712",
179 .buffer_bytes_max = 256 * 1024,
180 .formats = SNDRV_PCM_FMTBIT_S32_LE,
181 .channels_min = 10,
182 .channels_max = 10,
183 .periods_min = 1,
184 .periods_max = 1024,
185};
186
e4c28688 187static struct dummy_model model_uda1341 = {
d5e1ca05
JK		 188 .name = "uda1341",
189 .buffer_bytes_max = 16380,
190 .formats = SNDRV_PCM_FMTBIT_S16_LE,
191 .channels_min = 2,
192 .channels_max = 2,
193 .periods_min = 2,
194 .periods_max = 255,
195};
196
e4c28688 197static struct dummy_model model_ac97 = {
d5e1ca05
JK		 198 .name = "ac97",
199 .formats = SNDRV_PCM_FMTBIT_S16_LE,
200 .channels_min = 2,
201 .channels_max = 2,
202 .rates = SNDRV_PCM_RATE_48000,
203 .rate_min = 48000,
204 .rate_max = 48000,
205};
206
e4c28688 207static struct dummy_model model_ca0106 = {
d5e1ca05
JK		 208 .name = "ca0106",
209 .formats = SNDRV_PCM_FMTBIT_S16_LE,
210 .buffer_bytes_max = ((65536-64)*8),
211 .period_bytes_max = (65536-64),
212 .periods_min = 2,
213 .periods_max = 8,
214 .channels_min = 2,
215 .channels_max = 2,
216 .rates = SNDRV_PCM_RATE_48000|SNDRV_PCM_RATE_96000|SNDRV_PCM_RATE_192000,
217 .rate_min = 48000,
218 .rate_max = 192000,
219};
220
e4c28688 221static struct dummy_model *dummy_models[] = {
d5e1ca05
JK		 222 &model_emu10k1,
223 &model_rme9652,
224 &model_ice1712,
225 &model_uda1341,
226 &model_ac97,
227 &model_ca0106,
228 NULL
229};
230
c631d03c
TI		 231/*
232 * system timer interface
233 */
234
235struct dummy_systimer_pcm {
ddce57a6
TI		 236 /* ops must be the first item */
237 const struct dummy_timer_ops *timer_ops;
1da177e4
LT		 238 spinlock_t lock;
239 struct timer_list timer;
b142037b
TI		 240 unsigned long base_time;
241 unsigned int frac_pos; /* fractional sample position (based HZ) */
b5d10781 242 unsigned int frac_period_rest;
b142037b
TI		 243 unsigned int frac_buffer_size; /* buffer_size * HZ */
244 unsigned int frac_period_size; /* period_size * HZ */
245 unsigned int rate;
b5d10781 246 int elapsed;
4a4d2cfd
TI		 247 struct snd_pcm_substream *substream;
248};
1da177e4 249
b142037b
TI		 250static void dummy_systimer_rearm(struct dummy_systimer_pcm *dpcm)
251{
2a52b6ee
RK		 252 mod_timer(&dpcm->timer, jiffies +
253 (dpcm->frac_period_rest + dpcm->rate - 1) / dpcm->rate);
b142037b
TI		 254}
255
256static void dummy_systimer_update(struct dummy_systimer_pcm *dpcm)
257{
258 unsigned long delta;
259
260 delta = jiffies - dpcm->base_time;
261 if (!delta)
262 return;
b5d10781
TI		 263 dpcm->base_time += delta;
264 delta *= dpcm->rate;
265 dpcm->frac_pos += delta;
b142037b
TI		 266 while (dpcm->frac_pos >= dpcm->frac_buffer_size)
267 dpcm->frac_pos -= dpcm->frac_buffer_size;
b5d10781
TI		 268 while (dpcm->frac_period_rest <= delta) {
269 dpcm->elapsed++;
270 dpcm->frac_period_rest += dpcm->frac_period_size;
271 }
272 dpcm->frac_period_rest -= delta;
b142037b
TI		 273}
274
c631d03c 275static int dummy_systimer_start(struct snd_pcm_substream *substream)
1da177e4 276{
c631d03c
TI		 277 struct dummy_systimer_pcm *dpcm = substream->runtime->private_data;
278 spin_lock(&dpcm->lock);
b142037b
TI		 279 dpcm->base_time = jiffies;
280 dummy_systimer_rearm(dpcm);
c631d03c
TI		 281 spin_unlock(&dpcm->lock);
282 return 0;
1da177e4
LT		 283}
284
c631d03c 285static int dummy_systimer_stop(struct snd_pcm_substream *substream)
1da177e4 286{
c631d03c 287 struct dummy_systimer_pcm *dpcm = substream->runtime->private_data;
c8eb6ba1 288 spin_lock(&dpcm->lock);
c631d03c 289 del_timer(&dpcm->timer);
c8eb6ba1 290 spin_unlock(&dpcm->lock);
6e65c1cc 291 return 0;
1da177e4
LT		 292}
293
c631d03c 294static int dummy_systimer_prepare(struct snd_pcm_substream *substream)
1da177e4 295{
4a4d2cfd 296 struct snd_pcm_runtime *runtime = substream->runtime;
c631d03c 297 struct dummy_systimer_pcm *dpcm = runtime->private_data;
369b240d 298
b142037b
TI		 299 dpcm->frac_pos = 0;
300 dpcm->rate = runtime->rate;
301 dpcm->frac_buffer_size = runtime->buffer_size * HZ;
302 dpcm->frac_period_size = runtime->period_size * HZ;
b5d10781
TI		 303 dpcm->frac_period_rest = dpcm->frac_period_size;
304 dpcm->elapsed = 0;
53463a83 305
1da177e4
LT		 306 return 0;
307}
308
bc47ba90 309static void dummy_systimer_callback(struct timer_list *t)
1da177e4 310{
bc47ba90 311 struct dummy_systimer_pcm *dpcm = from_timer(dpcm, t, timer);
b32425ac 312 unsigned long flags;
b5d10781 313 int elapsed = 0;
1da177e4 314
b32425ac 315 spin_lock_irqsave(&dpcm->lock, flags);
b142037b
TI		 316 dummy_systimer_update(dpcm);
317 dummy_systimer_rearm(dpcm);
b5d10781
TI		 318 elapsed = dpcm->elapsed;
319 dpcm->elapsed = 0;
b142037b 320 spin_unlock_irqrestore(&dpcm->lock, flags);
b5d10781
TI		 321 if (elapsed)
322 snd_pcm_period_elapsed(dpcm->substream);
1da177e4
LT		 323}
324
c631d03c
TI		 325static snd_pcm_uframes_t
326dummy_systimer_pointer(struct snd_pcm_substream *substream)
1da177e4 327{
b142037b 328 struct dummy_systimer_pcm *dpcm = substream->runtime->private_data;
b5d10781 329 snd_pcm_uframes_t pos;
1da177e4 330
b142037b
TI		 331 spin_lock(&dpcm->lock);
332 dummy_systimer_update(dpcm);
b5d10781 333 pos = dpcm->frac_pos / HZ;
b142037b 334 spin_unlock(&dpcm->lock);
b5d10781 335 return pos;
1da177e4
LT		 336}
337
c631d03c 338static int dummy_systimer_create(struct snd_pcm_substream *substream)
1da177e4 339{
c631d03c
TI		 340 struct dummy_systimer_pcm *dpcm;
341
342 dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL);
343 if (!dpcm)
344 return -ENOMEM;
345 substream->runtime->private_data = dpcm;
bc47ba90 346 timer_setup(&dpcm->timer, dummy_systimer_callback, 0);
c631d03c
TI		 347 spin_lock_init(&dpcm->lock);
348 dpcm->substream = substream;
349 return 0;
350}
351
352static void dummy_systimer_free(struct snd_pcm_substream *substream)
353{
354 kfree(substream->runtime->private_data);
355}
356
d8c5ed75 357static const struct dummy_timer_ops dummy_systimer_ops = {
c631d03c
TI		 358 .create = dummy_systimer_create,
359 .free = dummy_systimer_free,
360 .prepare = dummy_systimer_prepare,
361 .start = dummy_systimer_start,
362 .stop = dummy_systimer_stop,
363 .pointer = dummy_systimer_pointer,
1da177e4
LT		 364};
365
c631d03c
TI		 366#ifdef CONFIG_HIGH_RES_TIMERS
367/*
368 * hrtimer interface
369 */
370
371struct dummy_hrtimer_pcm {
ddce57a6
TI		 372 /* ops must be the first item */
373 const struct dummy_timer_ops *timer_ops;
c631d03c
TI		 374 ktime_t base_time;
375 ktime_t period_time;
376 atomic_t running;
377 struct hrtimer timer;
c631d03c
TI		 378 struct snd_pcm_substream *substream;
379};
380
c631d03c
TI		 381static enum hrtimer_restart dummy_hrtimer_callback(struct hrtimer *timer)
382{
383 struct dummy_hrtimer_pcm *dpcm;
384
385 dpcm = container_of(timer, struct dummy_hrtimer_pcm, timer);
386 if (!atomic_read(&dpcm->running))
387 return HRTIMER_NORESTART;
b03bbbe0
TG		 388 /*
389 * In cases of XRUN and draining, this calls .trigger to stop PCM
390 * substream.
391 */
392 snd_pcm_period_elapsed(dpcm->substream);
393 if (!atomic_read(&dpcm->running))
394 return HRTIMER_NORESTART;
395
c631d03c
TI		 396 hrtimer_forward_now(timer, dpcm->period_time);
397 return HRTIMER_RESTART;
398}
399
400static int dummy_hrtimer_start(struct snd_pcm_substream *substream)
401{
402 struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data;
403
404 dpcm->base_time = hrtimer_cb_get_time(&dpcm->timer);
b03bbbe0 405 hrtimer_start(&dpcm->timer, dpcm->period_time, HRTIMER_MODE_REL_SOFT);
c631d03c
TI		 406 atomic_set(&dpcm->running, 1);
407 return 0;
408}
409
410static int dummy_hrtimer_stop(struct snd_pcm_substream *substream)
411{
412 struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data;
413
414 atomic_set(&dpcm->running, 0);
b03bbbe0
TG		 415 if (!hrtimer_callback_running(&dpcm->timer))
416 hrtimer_cancel(&dpcm->timer);
c631d03c
TI		 417 return 0;
418}
419
420static inline void dummy_hrtimer_sync(struct dummy_hrtimer_pcm *dpcm)
421{
d5dbbe65 422 hrtimer_cancel(&dpcm->timer);
c631d03c
TI		 423}
424
425static snd_pcm_uframes_t
426dummy_hrtimer_pointer(struct snd_pcm_substream *substream)
427{
428 struct snd_pcm_runtime *runtime = substream->runtime;
429 struct dummy_hrtimer_pcm *dpcm = runtime->private_data;
430 u64 delta;
431 u32 pos;
432
433 delta = ktime_us_delta(hrtimer_cb_get_time(&dpcm->timer),
434 dpcm->base_time);
435 delta = div_u64(delta * runtime->rate + 999999, 1000000);
436 div_u64_rem(delta, runtime->buffer_size, &pos);
437 return pos;
438}
439
440static int dummy_hrtimer_prepare(struct snd_pcm_substream *substream)
1da177e4 441{
c631d03c
TI		 442 struct snd_pcm_runtime *runtime = substream->runtime;
443 struct dummy_hrtimer_pcm *dpcm = runtime->private_data;
444 unsigned int period, rate;
445 long sec;
446 unsigned long nsecs;
447
448 dummy_hrtimer_sync(dpcm);
449 period = runtime->period_size;
450 rate = runtime->rate;
451 sec = period / rate;
452 period %= rate;
453 nsecs = div_u64((u64)period * 1000000000UL + rate - 1, rate);
454 dpcm->period_time = ktime_set(sec, nsecs);
455
456 return 0;
457}
458
459static int dummy_hrtimer_create(struct snd_pcm_substream *substream)
460{
461 struct dummy_hrtimer_pcm *dpcm;
462
463 dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL);
464 if (!dpcm)
465 return -ENOMEM;
466 substream->runtime->private_data = dpcm;
b03bbbe0 467 hrtimer_init(&dpcm->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_SOFT);
c631d03c
TI		 468 dpcm->timer.function = dummy_hrtimer_callback;
469 dpcm->substream = substream;
470 atomic_set(&dpcm->running, 0);
c631d03c
TI		 471 return 0;
472}
473
474static void dummy_hrtimer_free(struct snd_pcm_substream *substream)
475{
476 struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data;
477 dummy_hrtimer_sync(dpcm);
478 kfree(dpcm);
479}
480
d8c5ed75 481static const struct dummy_timer_ops dummy_hrtimer_ops = {
c631d03c
TI		 482 .create = dummy_hrtimer_create,
483 .free = dummy_hrtimer_free,
484 .prepare = dummy_hrtimer_prepare,
485 .start = dummy_hrtimer_start,
486 .stop = dummy_hrtimer_stop,
487 .pointer = dummy_hrtimer_pointer,
488};
489
490#endif /* CONFIG_HIGH_RES_TIMERS */
491
492/*
493 * PCM interface
494 */
495
496static int dummy_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
497{
c631d03c
TI		 498 switch (cmd) {
499 case SNDRV_PCM_TRIGGER_START:
500 case SNDRV_PCM_TRIGGER_RESUME:
ddce57a6 501 return get_dummy_ops(substream)->start(substream);
c631d03c
TI		 502 case SNDRV_PCM_TRIGGER_STOP:
503 case SNDRV_PCM_TRIGGER_SUSPEND:
ddce57a6 504 return get_dummy_ops(substream)->stop(substream);
c631d03c
TI		 505 }
506 return -EINVAL;
507}
508
509static int dummy_pcm_prepare(struct snd_pcm_substream *substream)
510{
ddce57a6 511 return get_dummy_ops(substream)->prepare(substream);
c631d03c
TI		 512}
513
514static snd_pcm_uframes_t dummy_pcm_pointer(struct snd_pcm_substream *substream)
515{
ddce57a6 516 return get_dummy_ops(substream)->pointer(substream);
c631d03c
TI		 517}
518
b6c0b715 519static const struct snd_pcm_hardware dummy_pcm_hardware = {
c631d03c
TI		 520 .info = (SNDRV_PCM_INFO_MMAP |
521 SNDRV_PCM_INFO_INTERLEAVED |
522 SNDRV_PCM_INFO_RESUME |
523 SNDRV_PCM_INFO_MMAP_VALID),
1da177e4
LT		 524 .formats = USE_FORMATS,
525 .rates = USE_RATE,
526 .rate_min = USE_RATE_MIN,
527 .rate_max = USE_RATE_MAX,
528 .channels_min = USE_CHANNELS_MIN,
529 .channels_max = USE_CHANNELS_MAX,
530 .buffer_bytes_max = MAX_BUFFER_SIZE,
d5e1ca05 531 .period_bytes_min = MIN_PERIOD_SIZE,
2ad5dd8d 532 .period_bytes_max = MAX_PERIOD_SIZE,
1da177e4
LT		 533 .periods_min = USE_PERIODS_MIN,
534 .periods_max = USE_PERIODS_MAX,
535 .fifo_size = 0,
536};
537
c631d03c
TI		 538static int dummy_pcm_hw_params(struct snd_pcm_substream *substream,
539 struct snd_pcm_hw_params *hw_params)
1da177e4 540{
a68c4d11
TI		 541 if (fake_buffer) {
542 /* runtime->dma_bytes has to be set manually to allow mmap */
543 substream->runtime->dma_bytes = params_buffer_bytes(hw_params);
544 return 0;
545 }
c631d03c
TI		 546 return snd_pcm_lib_malloc_pages(substream,
547 params_buffer_bytes(hw_params));
1da177e4
LT		 548}
549
c631d03c 550static int dummy_pcm_hw_free(struct snd_pcm_substream *substream)
1da177e4 551{
a68c4d11
TI		 552 if (fake_buffer)
553 return 0;
1da177e4
LT		 554 return snd_pcm_lib_free_pages(substream);
555}
556
c631d03c 557static int dummy_pcm_open(struct snd_pcm_substream *substream)
c8eb6ba1 558{
c631d03c 559 struct snd_dummy *dummy = snd_pcm_substream_chip(substream);
d5e1ca05 560 struct dummy_model *model = dummy->model;
4a4d2cfd 561 struct snd_pcm_runtime *runtime = substream->runtime;
ddce57a6 562 const struct dummy_timer_ops *ops;
c8eb6ba1
TI		 563 int err;
564
ddce57a6 565 ops = &dummy_systimer_ops;
c631d03c
TI		 566#ifdef CONFIG_HIGH_RES_TIMERS
567 if (hrtimer)
ddce57a6 568 ops = &dummy_hrtimer_ops;
c631d03c
TI		 569#endif
570
ddce57a6 571 err = ops->create(substream);
1a11cb64 572 if (err < 0)
1da177e4 573 return err;
ddce57a6 574 get_dummy_ops(substream) = ops;
1da177e4 575
d5e1ca05 576 runtime->hw = dummy->pcm_hw;
c631d03c 577 if (substream->pcm->device & 1) {
1da177e4
LT		 578 runtime->hw.info &= ~SNDRV_PCM_INFO_INTERLEAVED;
579 runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED;
580 }
581 if (substream->pcm->device & 2)
c631d03c
TI		 582 runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP |
583 SNDRV_PCM_INFO_MMAP_VALID);
584
d5e1ca05
JK		 585 if (model == NULL)
586 return 0;
587
588 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
589 if (model->playback_constraints)
590 err = model->playback_constraints(substream->runtime);
591 } else {
592 if (model->capture_constraints)
593 err = model->capture_constraints(substream->runtime);
594 }
c631d03c 595 if (err < 0) {
ddce57a6 596 get_dummy_ops(substream)->free(substream);
1da177e4 597 return err;
c631d03c 598 }
1da177e4
LT		 599 return 0;
600}
601
c631d03c 602static int dummy_pcm_close(struct snd_pcm_substream *substream)
1da177e4 603{
ddce57a6 604 get_dummy_ops(substream)->free(substream);
1da177e4
LT		 605 return 0;
606}
607
a68c4d11
TI		 608/*
609 * dummy buffer handling
610 */
611
612static void *dummy_page[2];
613
614static void free_fake_buffer(void)
615{
616 if (fake_buffer) {
617 int i;
618 for (i = 0; i < 2; i++)
619 if (dummy_page[i]) {
620 free_page((unsigned long)dummy_page[i]);
621 dummy_page[i] = NULL;
622 }
623 }
624}
625
626static int alloc_fake_buffer(void)
627{
628 int i;
629
630 if (!fake_buffer)
631 return 0;
632 for (i = 0; i < 2; i++) {
633 dummy_page[i] = (void *)get_zeroed_page(GFP_KERNEL);
634 if (!dummy_page[i]) {
635 free_fake_buffer();
636 return -ENOMEM;
637 }
638 }
639 return 0;
640}
641
642static int dummy_pcm_copy(struct snd_pcm_substream *substream,
d53611d2
TI		 643 int channel, unsigned long pos,
644 void __user *dst, unsigned long bytes)
645{
646 return 0; /* do nothing */
647}
648
649static int dummy_pcm_copy_kernel(struct snd_pcm_substream *substream,
650 int channel, unsigned long pos,
651 void *dst, unsigned long bytes)
a68c4d11
TI		 652{
653 return 0; /* do nothing */
654}
655
656static int dummy_pcm_silence(struct snd_pcm_substream *substream,
d53611d2
TI		 657 int channel, unsigned long pos,
658 unsigned long bytes)
a68c4d11
TI		 659{
660 return 0; /* do nothing */
661}
662
663static struct page *dummy_pcm_page(struct snd_pcm_substream *substream,
664 unsigned long offset)
665{
666 return virt_to_page(dummy_page[substream->stream]); /* the same page */
667}
668
c631d03c
TI		 669static struct snd_pcm_ops dummy_pcm_ops = {
670 .open = dummy_pcm_open,
671 .close = dummy_pcm_close,
672 .ioctl = snd_pcm_lib_ioctl,
673 .hw_params = dummy_pcm_hw_params,
674 .hw_free = dummy_pcm_hw_free,
675 .prepare = dummy_pcm_prepare,
676 .trigger = dummy_pcm_trigger,
677 .pointer = dummy_pcm_pointer,
1da177e4
LT		 678};
679
a68c4d11
TI		 680static struct snd_pcm_ops dummy_pcm_ops_no_buf = {
681 .open = dummy_pcm_open,
682 .close = dummy_pcm_close,
683 .ioctl = snd_pcm_lib_ioctl,
684 .hw_params = dummy_pcm_hw_params,
685 .hw_free = dummy_pcm_hw_free,
686 .prepare = dummy_pcm_prepare,
687 .trigger = dummy_pcm_trigger,
688 .pointer = dummy_pcm_pointer,
d53611d2
TI		 689 .copy_user = dummy_pcm_copy,
690 .copy_kernel = dummy_pcm_copy_kernel,
691 .fill_silence = dummy_pcm_silence,
a68c4d11
TI		 692 .page = dummy_pcm_page,
693};
694
fbbb01a1
BP		 695static int snd_card_dummy_pcm(struct snd_dummy *dummy, int device,
696 int substreams)
1da177e4 697{
4a4d2cfd 698 struct snd_pcm *pcm;
a68c4d11 699 struct snd_pcm_ops *ops;
1da177e4
LT		 700 int err;
701
1a11cb64
JK		 702 err = snd_pcm_new(dummy->card, "Dummy PCM", device,
703 substreams, substreams, &pcm);
704 if (err < 0)
1da177e4 705 return err;
6e65c1cc 706 dummy->pcm = pcm;
a68c4d11
TI		 707 if (fake_buffer)
708 ops = &dummy_pcm_ops_no_buf;
709 else
710 ops = &dummy_pcm_ops;
711 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, ops);
712 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, ops);
1da177e4
LT		 713 pcm->private_data = dummy;
714 pcm->info_flags = 0;
715 strcpy(pcm->name, "Dummy PCM");
a68c4d11
TI		 716 if (!fake_buffer) {
717 snd_pcm_lib_preallocate_pages_for_all(pcm,
718 SNDRV_DMA_TYPE_CONTINUOUS,
719 snd_dma_continuous_data(GFP_KERNEL),
720 0, 64*1024);
721 }
1da177e4
LT		 722 return 0;
723}
724
9b151fec
TI		 725/*
726 * mixer interface
727 */
728
1da177e4 729#define DUMMY_VOLUME(xname, xindex, addr) \
fb567a8e
TI		 730{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
731 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
732 .name = xname, .index = xindex, \
1da177e4
LT		 733 .info = snd_dummy_volume_info, \
734 .get = snd_dummy_volume_get, .put = snd_dummy_volume_put, \
fb567a8e
TI		 735 .private_value = addr, \
736 .tlv = { .p = db_scale_dummy } }
1da177e4 737
4a4d2cfd
TI		 738static int snd_dummy_volume_info(struct snd_kcontrol *kcontrol,
739 struct snd_ctl_elem_info *uinfo)
1da177e4
LT		 740{
741 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
742 uinfo->count = 2;
743 uinfo->value.integer.min = -50;
744 uinfo->value.integer.max = 100;
745 return 0;
746}
747
4a4d2cfd
TI		 748static int snd_dummy_volume_get(struct snd_kcontrol *kcontrol,
749 struct snd_ctl_elem_value *ucontrol)
1da177e4 750{
4a4d2cfd 751 struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);
1da177e4
LT		 752 int addr = kcontrol->private_value;
753
c8eb6ba1 754 spin_lock_irq(&dummy->mixer_lock);
1da177e4
LT		 755 ucontrol->value.integer.value[0] = dummy->mixer_volume[addr][0];
756 ucontrol->value.integer.value[1] = dummy->mixer_volume[addr][1];
c8eb6ba1 757 spin_unlock_irq(&dummy->mixer_lock);
1da177e4
LT		 758 return 0;
759}
760
4a4d2cfd
TI		 761static int snd_dummy_volume_put(struct snd_kcontrol *kcontrol,
762 struct snd_ctl_elem_value *ucontrol)
1da177e4 763{
4a4d2cfd 764 struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);
1da177e4
LT		 765 int change, addr = kcontrol->private_value;
766 int left, right;
767
768 left = ucontrol->value.integer.value[0];
769 if (left < -50)
770 left = -50;
771 if (left > 100)
772 left = 100;
773 right = ucontrol->value.integer.value[1];
774 if (right < -50)
775 right = -50;
776 if (right > 100)
777 right = 100;
c8eb6ba1 778 spin_lock_irq(&dummy->mixer_lock);
1da177e4
LT		 779 change = dummy->mixer_volume[addr][0] != left ||
780 dummy->mixer_volume[addr][1] != right;
781 dummy->mixer_volume[addr][0] = left;
782 dummy->mixer_volume[addr][1] = right;
c8eb6ba1 783 spin_unlock_irq(&dummy->mixer_lock);
1da177e4
LT		 784 return change;
785}
786
0cb29ea0 787static const DECLARE_TLV_DB_SCALE(db_scale_dummy, -4500, 30, 0);
fb567a8e 788
1da177e4
LT		 789#define DUMMY_CAPSRC(xname, xindex, addr) \
790{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
791 .info = snd_dummy_capsrc_info, \
792 .get = snd_dummy_capsrc_get, .put = snd_dummy_capsrc_put, \
793 .private_value = addr }
794
a5ce8890 795#define snd_dummy_capsrc_info snd_ctl_boolean_stereo_info
1da177e4 796
4a4d2cfd
TI		 797static int snd_dummy_capsrc_get(struct snd_kcontrol *kcontrol,
798 struct snd_ctl_elem_value *ucontrol)
1da177e4 799{
4a4d2cfd 800 struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);
1da177e4
LT		 801 int addr = kcontrol->private_value;
802
c8eb6ba1 803 spin_lock_irq(&dummy->mixer_lock);
1da177e4
LT		 804 ucontrol->value.integer.value[0] = dummy->capture_source[addr][0];
805 ucontrol->value.integer.value[1] = dummy->capture_source[addr][1];
c8eb6ba1 806 spin_unlock_irq(&dummy->mixer_lock);
1da177e4
LT		 807 return 0;
808}
809
4a4d2cfd 810static int snd_dummy_capsrc_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1da177e4 811{
4a4d2cfd 812 struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);
1da177e4
LT		 813 int change, addr = kcontrol->private_value;
814 int left, right;
815
816 left = ucontrol->value.integer.value[0] & 1;
817 right = ucontrol->value.integer.value[1] & 1;
c8eb6ba1 818 spin_lock_irq(&dummy->mixer_lock);
1da177e4
LT		 819 change = dummy->capture_source[addr][0] != left &&
820 dummy->capture_source[addr][1] != right;
821 dummy->capture_source[addr][0] = left;
822 dummy->capture_source[addr][1] = right;
c8eb6ba1 823 spin_unlock_irq(&dummy->mixer_lock);
1da177e4
LT		 824 return change;
825}
826
16e43467
CL		 827static int snd_dummy_iobox_info(struct snd_kcontrol *kcontrol,
828 struct snd_ctl_elem_info *info)
829{
a4a1b737 830 static const char *const names[] = { "None", "CD Player" };
16e43467
CL		 831
832 return snd_ctl_enum_info(info, 1, 2, names);
833}
834
835static int snd_dummy_iobox_get(struct snd_kcontrol *kcontrol,
836 struct snd_ctl_elem_value *value)
837{
838 struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);
839
840 value->value.enumerated.item[0] = dummy->iobox;
841 return 0;
842}
843
844static int snd_dummy_iobox_put(struct snd_kcontrol *kcontrol,
845 struct snd_ctl_elem_value *value)
846{
847 struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);
848 int changed;
849
850 if (value->value.enumerated.item[0] > 1)
851 return -EINVAL;
852
853 changed = value->value.enumerated.item[0] != dummy->iobox;
854 if (changed) {
855 dummy->iobox = value->value.enumerated.item[0];
856
857 if (dummy->iobox) {
858 dummy->cd_volume_ctl->vd[0].access &=
859 ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
860 dummy->cd_switch_ctl->vd[0].access &=
861 ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
862 } else {
863 dummy->cd_volume_ctl->vd[0].access |=
864 SNDRV_CTL_ELEM_ACCESS_INACTIVE;
865 dummy->cd_switch_ctl->vd[0].access |=
866 SNDRV_CTL_ELEM_ACCESS_INACTIVE;
867 }
868
869 snd_ctl_notify(dummy->card, SNDRV_CTL_EVENT_MASK_INFO,
870 &dummy->cd_volume_ctl->id);
871 snd_ctl_notify(dummy->card, SNDRV_CTL_EVENT_MASK_INFO,
872 &dummy->cd_switch_ctl->id);
873 }
874
875 return changed;
876}
877
4a4d2cfd 878static struct snd_kcontrol_new snd_dummy_controls[] = {
1da177e4
LT		 879DUMMY_VOLUME("Master Volume", 0, MIXER_ADDR_MASTER),
880DUMMY_CAPSRC("Master Capture Switch", 0, MIXER_ADDR_MASTER),
881DUMMY_VOLUME("Synth Volume", 0, MIXER_ADDR_SYNTH),
e05d6964 882DUMMY_CAPSRC("Synth Capture Switch", 0, MIXER_ADDR_SYNTH),
1da177e4 883DUMMY_VOLUME("Line Volume", 0, MIXER_ADDR_LINE),
e05d6964 884DUMMY_CAPSRC("Line Capture Switch", 0, MIXER_ADDR_LINE),
1da177e4 885DUMMY_VOLUME("Mic Volume", 0, MIXER_ADDR_MIC),
e05d6964 886DUMMY_CAPSRC("Mic Capture Switch", 0, MIXER_ADDR_MIC),
1da177e4 887DUMMY_VOLUME("CD Volume", 0, MIXER_ADDR_CD),
16e43467
CL		 888DUMMY_CAPSRC("CD Capture Switch", 0, MIXER_ADDR_CD),
889{
890 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
891 .name = "External I/O Box",
892 .info = snd_dummy_iobox_info,
893 .get = snd_dummy_iobox_get,
894 .put = snd_dummy_iobox_put,
895},
1da177e4
LT		 896};
897
fbbb01a1 898static int snd_card_dummy_new_mixer(struct snd_dummy *dummy)
1da177e4 899{
4a4d2cfd 900 struct snd_card *card = dummy->card;
16e43467 901 struct snd_kcontrol *kcontrol;
1da177e4
LT		 902 unsigned int idx;
903 int err;
904
1da177e4
LT		 905 spin_lock_init(&dummy->mixer_lock);
906 strcpy(card->mixername, "Dummy Mixer");
16e43467 907 dummy->iobox = 1;
1da177e4
LT		 908
909 for (idx = 0; idx < ARRAY_SIZE(snd_dummy_controls); idx++) {
16e43467
CL		 910 kcontrol = snd_ctl_new1(&snd_dummy_controls[idx], dummy);
911 err = snd_ctl_add(card, kcontrol);
1a11cb64 912 if (err < 0)
1da177e4 913 return err;
16e43467
CL		 914 if (!strcmp(kcontrol->id.name, "CD Volume"))
915 dummy->cd_volume_ctl = kcontrol;
916 else if (!strcmp(kcontrol->id.name, "CD Capture Switch"))
917 dummy->cd_switch_ctl = kcontrol;
918
1da177e4
LT		 919 }
920 return 0;
921}
922
129a4c9f 923#if defined(CONFIG_SND_DEBUG) && defined(CONFIG_SND_PROC_FS)
9b151fec
TI		 924/*
925 * proc interface
926 */
d5e1ca05
JK		 927static void print_formats(struct snd_dummy *dummy,
928 struct snd_info_buffer *buffer)
9b151fec
TI		 929{
930 int i;
931
932 for (i = 0; i < SNDRV_PCM_FORMAT_LAST; i++) {
d5e1ca05 933 if (dummy->pcm_hw.formats & (1ULL << i))
9b151fec
TI		 934 snd_iprintf(buffer, " %s", snd_pcm_format_name(i));
935 }
936}
937
d5e1ca05
JK		 938static void print_rates(struct snd_dummy *dummy,
939 struct snd_info_buffer *buffer)
9b151fec
TI		 940{
941 static int rates[] = {
942 5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000,
943 64000, 88200, 96000, 176400, 192000,
944 };
945 int i;
946
d5e1ca05 947 if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_CONTINUOUS)
9b151fec 948 snd_iprintf(buffer, " continuous");
d5e1ca05 949 if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_KNOT)
9b151fec
TI		 950 snd_iprintf(buffer, " knot");
951 for (i = 0; i < ARRAY_SIZE(rates); i++)
d5e1ca05 952 if (dummy->pcm_hw.rates & (1 << i))
9b151fec
TI		 953 snd_iprintf(buffer, " %d", rates[i]);
954}
955
d5e1ca05
JK		 956#define get_dummy_int_ptr(dummy, ofs) \
957 (unsigned int *)((char *)&((dummy)->pcm_hw) + (ofs))
958#define get_dummy_ll_ptr(dummy, ofs) \
959 (unsigned long long *)((char *)&((dummy)->pcm_hw) + (ofs))
9b151fec
TI		 960
961struct dummy_hw_field {
962 const char *name;
963 const char *format;
964 unsigned int offset;
965 unsigned int size;
966};
967#define FIELD_ENTRY(item, fmt) { \
968 .name = #item, \
969 .format = fmt, \
970 .offset = offsetof(struct snd_pcm_hardware, item), \
971 .size = sizeof(dummy_pcm_hardware.item) }
972
973static struct dummy_hw_field fields[] = {
974 FIELD_ENTRY(formats, "%#llx"),
975 FIELD_ENTRY(rates, "%#x"),
976 FIELD_ENTRY(rate_min, "%d"),
977 FIELD_ENTRY(rate_max, "%d"),
978 FIELD_ENTRY(channels_min, "%d"),
979 FIELD_ENTRY(channels_max, "%d"),
980 FIELD_ENTRY(buffer_bytes_max, "%ld"),
981 FIELD_ENTRY(period_bytes_min, "%ld"),
982 FIELD_ENTRY(period_bytes_max, "%ld"),
983 FIELD_ENTRY(periods_min, "%d"),
984 FIELD_ENTRY(periods_max, "%d"),
985};
986
987static void dummy_proc_read(struct snd_info_entry *entry,
988 struct snd_info_buffer *buffer)
989{
d5e1ca05 990 struct snd_dummy *dummy = entry->private_data;
9b151fec
TI		 991 int i;
992
993 for (i = 0; i < ARRAY_SIZE(fields); i++) {
994 snd_iprintf(buffer, "%s ", fields[i].name);
995 if (fields[i].size == sizeof(int))
996 snd_iprintf(buffer, fields[i].format,
d5e1ca05 997 *get_dummy_int_ptr(dummy, fields[i].offset));
9b151fec
TI		 998 else
999 snd_iprintf(buffer, fields[i].format,
d5e1ca05 1000 *get_dummy_ll_ptr(dummy, fields[i].offset));
9b151fec 1001 if (!strcmp(fields[i].name, "formats"))
d5e1ca05 1002 print_formats(dummy, buffer);
9b151fec 1003 else if (!strcmp(fields[i].name, "rates"))
d5e1ca05 1004 print_rates(dummy, buffer);
9b151fec
TI		 1005 snd_iprintf(buffer, "\n");
1006 }
1007}
1008
1009static void dummy_proc_write(struct snd_info_entry *entry,
1010 struct snd_info_buffer *buffer)
1011{
d5e1ca05 1012 struct snd_dummy *dummy = entry->private_data;
9b151fec
TI		 1013 char line[64];
1014
1015 while (!snd_info_get_line(buffer, line, sizeof(line))) {
1016 char item[20];
1017 const char *ptr;
1018 unsigned long long val;
1019 int i;
1020
1021 ptr = snd_info_get_str(item, line, sizeof(item));
1022 for (i = 0; i < ARRAY_SIZE(fields); i++) {
1023 if (!strcmp(item, fields[i].name))
1024 break;
1025 }
1026 if (i >= ARRAY_SIZE(fields))
1027 continue;
1028 snd_info_get_str(item, ptr, sizeof(item));
b785a492 1029 if (kstrtoull(item, 0, &val))
9b151fec
TI		 1030 continue;
1031 if (fields[i].size == sizeof(int))
d5e1ca05 1032 *get_dummy_int_ptr(dummy, fields[i].offset) = val;
9b151fec 1033 else
d5e1ca05 1034 *get_dummy_ll_ptr(dummy, fields[i].offset) = val;
9b151fec
TI		 1035 }
1036}
1037
fbbb01a1 1038static void dummy_proc_init(struct snd_dummy *chip)
9b151fec
TI		 1039{
1040 struct snd_info_entry *entry;
1041
1042 if (!snd_card_proc_new(chip->card, "dummy_pcm", &entry)) {
1043 snd_info_set_text_ops(entry, chip, dummy_proc_read);
1044 entry->c.text.write = dummy_proc_write;
6a73cf46 1045 entry->mode |= 0200;
d5e1ca05 1046 entry->private_data = chip;
9b151fec
TI		 1047 }
1048}
1049#else
1050#define dummy_proc_init(x)
129a4c9f 1051#endif /* CONFIG_SND_DEBUG && CONFIG_SND_PROC_FS */
9b151fec 1052
fbbb01a1 1053static int snd_dummy_probe(struct platform_device *devptr)
1da177e4 1054{
4a4d2cfd
TI		 1055 struct snd_card *card;
1056 struct snd_dummy *dummy;
d5e1ca05 1057 struct dummy_model *m = NULL, **mdl;
1da177e4 1058 int idx, err;
6e65c1cc 1059 int dev = devptr->id;
1da177e4 1060
5872f3f6
TI		 1061 err = snd_card_new(&devptr->dev, index[dev], id[dev], THIS_MODULE,
1062 sizeof(struct snd_dummy), &card);
bd7dd77c
TI		 1063 if (err < 0)
1064 return err;
4a4d2cfd 1065 dummy = card->private_data;
1da177e4 1066 dummy->card = card;
d5e1ca05
JK		 1067 for (mdl = dummy_models; *mdl && model[dev]; mdl++) {
1068 if (strcmp(model[dev], (*mdl)->name) == 0) {
1069 printk(KERN_INFO
1070 "snd-dummy: Using model '%s' for card %i\n",
1071 (*mdl)->name, card->number);
1072 m = dummy->model = *mdl;
1073 break;
1074 }
1075 }
1da177e4
LT		 1076 for (idx = 0; idx < MAX_PCM_DEVICES && idx < pcm_devs[dev]; idx++) {
1077 if (pcm_substreams[dev] < 1)
1078 pcm_substreams[dev] = 1;
1079 if (pcm_substreams[dev] > MAX_PCM_SUBSTREAMS)
1080 pcm_substreams[dev] = MAX_PCM_SUBSTREAMS;
1a11cb64
JK		 1081 err = snd_card_dummy_pcm(dummy, idx, pcm_substreams[dev]);
1082 if (err < 0)
1da177e4
LT		 1083 goto __nodev;
1084 }
d5e1ca05
JK		 1085
1086 dummy->pcm_hw = dummy_pcm_hardware;
1087 if (m) {
1088 if (m->formats)
1089 dummy->pcm_hw.formats = m->formats;
1090 if (m->buffer_bytes_max)
1091 dummy->pcm_hw.buffer_bytes_max = m->buffer_bytes_max;
1092 if (m->period_bytes_min)
1093 dummy->pcm_hw.period_bytes_min = m->period_bytes_min;
1094 if (m->period_bytes_max)
1095 dummy->pcm_hw.period_bytes_max = m->period_bytes_max;
1096 if (m->periods_min)
1097 dummy->pcm_hw.periods_min = m->periods_min;
1098 if (m->periods_max)
1099 dummy->pcm_hw.periods_max = m->periods_max;
1100 if (m->rates)
1101 dummy->pcm_hw.rates = m->rates;
1102 if (m->rate_min)
1103 dummy->pcm_hw.rate_min = m->rate_min;
1104 if (m->rate_max)
1105 dummy->pcm_hw.rate_max = m->rate_max;
1106 if (m->channels_min)
1107 dummy->pcm_hw.channels_min = m->channels_min;
1108 if (m->channels_max)
1109 dummy->pcm_hw.channels_max = m->channels_max;
1110 }
1111
1a11cb64
JK		 1112 err = snd_card_dummy_new_mixer(dummy);
1113 if (err < 0)
1da177e4
LT		 1114 goto __nodev;
1115 strcpy(card->driver, "Dummy");
1116 strcpy(card->shortname, "Dummy");
1117 sprintf(card->longname, "Dummy %i", dev + 1);
16dab54b 1118
9b151fec
TI		 1119 dummy_proc_init(dummy);
1120
1a11cb64
JK		 1121 err = snd_card_register(card);
1122 if (err == 0) {
6e65c1cc 1123 platform_set_drvdata(devptr, card);
1da177e4
LT		 1124 return 0;
1125 }
1126 __nodev:
1127 snd_card_free(card);
1128 return err;
1129}
1130
fbbb01a1 1131static int snd_dummy_remove(struct platform_device *devptr)
6e65c1cc
TI		 1132{
1133 snd_card_free(platform_get_drvdata(devptr));
6e65c1cc
TI		 1134 return 0;
1135}
1136
d34e4e00 1137#ifdef CONFIG_PM_SLEEP
284e7ca7 1138static int snd_dummy_suspend(struct device *pdev)
1da177e4 1139{
284e7ca7 1140 struct snd_card *card = dev_get_drvdata(pdev);
6e65c1cc 1141 struct snd_dummy *dummy = card->private_data;
1da177e4 1142
6e65c1cc
TI		 1143 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1144 snd_pcm_suspend_all(dummy->pcm);
1145 return 0;
1146}
1147
284e7ca7 1148static int snd_dummy_resume(struct device *pdev)
6e65c1cc 1149{
284e7ca7 1150 struct snd_card *card = dev_get_drvdata(pdev);
6e65c1cc
TI		 1151
1152 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1153 return 0;
1154}
284e7ca7
TI		 1155
1156static SIMPLE_DEV_PM_OPS(snd_dummy_pm, snd_dummy_suspend, snd_dummy_resume);
1157#define SND_DUMMY_PM_OPS &snd_dummy_pm
1158#else
1159#define SND_DUMMY_PM_OPS NULL
6e65c1cc
TI		 1160#endif
1161
1162#define SND_DUMMY_DRIVER "snd_dummy"
1163
1164static struct platform_driver snd_dummy_driver = {
1165 .probe = snd_dummy_probe,
fbbb01a1 1166 .remove = snd_dummy_remove,
6e65c1cc 1167 .driver = {
8bf01d8a 1168 .name = SND_DUMMY_DRIVER,
284e7ca7 1169 .pm = SND_DUMMY_PM_OPS,
6e65c1cc
TI		 1170 },
1171};
1172
c12aad6e 1173static void snd_dummy_unregister_all(void)
f7a9275d
CL		 1174{
1175 int i;
1176
1177 for (i = 0; i < ARRAY_SIZE(devices); ++i)
1178 platform_device_unregister(devices[i]);
1179 platform_driver_unregister(&snd_dummy_driver);
a68c4d11 1180 free_fake_buffer();
f7a9275d
CL		 1181}
1182
6e65c1cc
TI		 1183static int __init alsa_card_dummy_init(void)
1184{
1185 int i, cards, err;
1186
1a11cb64
JK		 1187 err = platform_driver_register(&snd_dummy_driver);
1188 if (err < 0)
6e65c1cc
TI		 1189 return err;
1190
a68c4d11
TI		 1191 err = alloc_fake_buffer();
1192 if (err < 0) {
1193 platform_driver_unregister(&snd_dummy_driver);
1194 return err;
1195 }
1196
6e65c1cc 1197 cards = 0;
8278ca8f 1198 for (i = 0; i < SNDRV_CARDS; i++) {
6e65c1cc 1199 struct platform_device *device;
8278ca8f
TI		 1200 if (! enable[i])
1201 continue;
6e65c1cc
TI		 1202 device = platform_device_register_simple(SND_DUMMY_DRIVER,
1203 i, NULL, 0);
a182ee98
RH		 1204 if (IS_ERR(device))
1205 continue;
7152447d
RH		 1206 if (!platform_get_drvdata(device)) {
1207 platform_device_unregister(device);
1208 continue;
1209 }
f7a9275d 1210 devices[i] = device;
1da177e4
LT		 1211 cards++;
1212 }
1213 if (!cards) {
1214#ifdef MODULE
1215 printk(KERN_ERR "Dummy soundcard not found or device busy\n");
1216#endif
a182ee98
RH		 1217 snd_dummy_unregister_all();
1218 return -ENODEV;
1da177e4
LT		 1219 }
1220 return 0;
1221}
1222
1223static void __exit alsa_card_dummy_exit(void)
1224{
f7a9275d 1225 snd_dummy_unregister_all();
1da177e4
LT		 1226}
1227
1228module_init(alsa_card_dummy_init)
1229module_exit(alsa_card_dummy_exit)
Linux 6.x block layer and io_uring tree(s)