Commit | Line | Data |
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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 | 39 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); |
1da177e4 LT |
40 | MODULE_DESCRIPTION("Dummy soundcard (/dev/null)"); |
41 | MODULE_LICENSE("GPL"); | |
42 | MODULE_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 | |
61 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ | |
62 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ | |
a67ff6a5 | 63 | static bool enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0}; |
d5e1ca05 | 64 | static char *model[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = NULL}; |
1da177e4 LT |
65 | static int pcm_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1}; |
66 | static 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 | 69 | static bool hrtimer = 1; |
c631d03c | 70 | #endif |
a67ff6a5 | 71 | static bool fake_buffer = 1; |
1da177e4 LT |
72 | |
73 | module_param_array(index, int, NULL, 0444); | |
74 | MODULE_PARM_DESC(index, "Index value for dummy soundcard."); | |
75 | module_param_array(id, charp, NULL, 0444); | |
76 | MODULE_PARM_DESC(id, "ID string for dummy soundcard."); | |
77 | module_param_array(enable, bool, NULL, 0444); | |
78 | MODULE_PARM_DESC(enable, "Enable this dummy soundcard."); | |
d5e1ca05 JK |
79 | module_param_array(model, charp, NULL, 0444); |
80 | MODULE_PARM_DESC(model, "Soundcard model."); | |
1da177e4 LT |
81 | module_param_array(pcm_devs, int, NULL, 0444); |
82 | MODULE_PARM_DESC(pcm_devs, "PCM devices # (0-4) for dummy driver."); | |
83 | module_param_array(pcm_substreams, int, NULL, 0444); | |
23aebca4 | 84 | MODULE_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 |
87 | module_param(fake_buffer, bool, 0444); |
88 | MODULE_PARM_DESC(fake_buffer, "Fake buffer allocations."); | |
c631d03c TI |
89 | #ifdef CONFIG_HIGH_RES_TIMERS |
90 | module_param(hrtimer, bool, 0644); | |
91 | MODULE_PARM_DESC(hrtimer, "Use hrtimer as the timer source."); | |
92 | #endif | |
1da177e4 | 93 | |
f7a9275d CL |
94 | static 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 |
103 | struct 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 | ||
d5e1ca05 JK |
112 | struct dummy_model { |
113 | const char *name; | |
114 | int (*playback_constraints)(struct snd_pcm_runtime *runtime); | |
115 | int (*capture_constraints)(struct snd_pcm_runtime *runtime); | |
116 | u64 formats; | |
117 | size_t buffer_bytes_max; | |
118 | size_t period_bytes_min; | |
119 | size_t period_bytes_max; | |
120 | unsigned int periods_min; | |
121 | unsigned int periods_max; | |
122 | unsigned int rates; | |
123 | unsigned int rate_min; | |
124 | unsigned int rate_max; | |
125 | unsigned int channels_min; | |
126 | unsigned int channels_max; | |
127 | }; | |
128 | ||
4a4d2cfd TI |
129 | struct snd_dummy { |
130 | struct snd_card *card; | |
d5e1ca05 | 131 | struct dummy_model *model; |
6e65c1cc | 132 | struct snd_pcm *pcm; |
d5e1ca05 | 133 | struct snd_pcm_hardware pcm_hw; |
1da177e4 LT |
134 | spinlock_t mixer_lock; |
135 | int mixer_volume[MIXER_ADDR_LAST+1][2]; | |
136 | int capture_source[MIXER_ADDR_LAST+1][2]; | |
c631d03c | 137 | const struct dummy_timer_ops *timer_ops; |
4a4d2cfd | 138 | }; |
1da177e4 | 139 | |
d5e1ca05 JK |
140 | /* |
141 | * card models | |
142 | */ | |
143 | ||
144 | static int emu10k1_playback_constraints(struct snd_pcm_runtime *runtime) | |
145 | { | |
146 | int err; | |
147 | err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); | |
148 | if (err < 0) | |
149 | return err; | |
150 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 256, UINT_MAX); | |
151 | if (err < 0) | |
152 | return err; | |
153 | return 0; | |
154 | } | |
155 | ||
156 | struct dummy_model model_emu10k1 = { | |
157 | .name = "emu10k1", | |
158 | .playback_constraints = emu10k1_playback_constraints, | |
159 | .buffer_bytes_max = 128 * 1024, | |
160 | }; | |
161 | ||
162 | struct dummy_model model_rme9652 = { | |
163 | .name = "rme9652", | |
164 | .buffer_bytes_max = 26 * 64 * 1024, | |
165 | .formats = SNDRV_PCM_FMTBIT_S32_LE, | |
166 | .channels_min = 26, | |
167 | .channels_max = 26, | |
168 | .periods_min = 2, | |
169 | .periods_max = 2, | |
170 | }; | |
171 | ||
172 | struct dummy_model model_ice1712 = { | |
173 | .name = "ice1712", | |
174 | .buffer_bytes_max = 256 * 1024, | |
175 | .formats = SNDRV_PCM_FMTBIT_S32_LE, | |
176 | .channels_min = 10, | |
177 | .channels_max = 10, | |
178 | .periods_min = 1, | |
179 | .periods_max = 1024, | |
180 | }; | |
181 | ||
182 | struct dummy_model model_uda1341 = { | |
183 | .name = "uda1341", | |
184 | .buffer_bytes_max = 16380, | |
185 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
186 | .channels_min = 2, | |
187 | .channels_max = 2, | |
188 | .periods_min = 2, | |
189 | .periods_max = 255, | |
190 | }; | |
191 | ||
192 | struct dummy_model model_ac97 = { | |
193 | .name = "ac97", | |
194 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
195 | .channels_min = 2, | |
196 | .channels_max = 2, | |
197 | .rates = SNDRV_PCM_RATE_48000, | |
198 | .rate_min = 48000, | |
199 | .rate_max = 48000, | |
200 | }; | |
201 | ||
202 | struct dummy_model model_ca0106 = { | |
203 | .name = "ca0106", | |
204 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
205 | .buffer_bytes_max = ((65536-64)*8), | |
206 | .period_bytes_max = (65536-64), | |
207 | .periods_min = 2, | |
208 | .periods_max = 8, | |
209 | .channels_min = 2, | |
210 | .channels_max = 2, | |
211 | .rates = SNDRV_PCM_RATE_48000|SNDRV_PCM_RATE_96000|SNDRV_PCM_RATE_192000, | |
212 | .rate_min = 48000, | |
213 | .rate_max = 192000, | |
214 | }; | |
215 | ||
216 | struct dummy_model *dummy_models[] = { | |
217 | &model_emu10k1, | |
218 | &model_rme9652, | |
219 | &model_ice1712, | |
220 | &model_uda1341, | |
221 | &model_ac97, | |
222 | &model_ca0106, | |
223 | NULL | |
224 | }; | |
225 | ||
c631d03c TI |
226 | /* |
227 | * system timer interface | |
228 | */ | |
229 | ||
230 | struct dummy_systimer_pcm { | |
1da177e4 LT |
231 | spinlock_t lock; |
232 | struct timer_list timer; | |
b142037b TI |
233 | unsigned long base_time; |
234 | unsigned int frac_pos; /* fractional sample position (based HZ) */ | |
b5d10781 | 235 | unsigned int frac_period_rest; |
b142037b TI |
236 | unsigned int frac_buffer_size; /* buffer_size * HZ */ |
237 | unsigned int frac_period_size; /* period_size * HZ */ | |
238 | unsigned int rate; | |
b5d10781 | 239 | int elapsed; |
4a4d2cfd TI |
240 | struct snd_pcm_substream *substream; |
241 | }; | |
1da177e4 | 242 | |
b142037b TI |
243 | static void dummy_systimer_rearm(struct dummy_systimer_pcm *dpcm) |
244 | { | |
b142037b | 245 | dpcm->timer.expires = jiffies + |
b5d10781 | 246 | (dpcm->frac_period_rest + dpcm->rate - 1) / dpcm->rate; |
b142037b TI |
247 | add_timer(&dpcm->timer); |
248 | } | |
249 | ||
250 | static void dummy_systimer_update(struct dummy_systimer_pcm *dpcm) | |
251 | { | |
252 | unsigned long delta; | |
253 | ||
254 | delta = jiffies - dpcm->base_time; | |
255 | if (!delta) | |
256 | return; | |
b5d10781 TI |
257 | dpcm->base_time += delta; |
258 | delta *= dpcm->rate; | |
259 | dpcm->frac_pos += delta; | |
b142037b TI |
260 | while (dpcm->frac_pos >= dpcm->frac_buffer_size) |
261 | dpcm->frac_pos -= dpcm->frac_buffer_size; | |
b5d10781 TI |
262 | while (dpcm->frac_period_rest <= delta) { |
263 | dpcm->elapsed++; | |
264 | dpcm->frac_period_rest += dpcm->frac_period_size; | |
265 | } | |
266 | dpcm->frac_period_rest -= delta; | |
b142037b TI |
267 | } |
268 | ||
c631d03c | 269 | static int dummy_systimer_start(struct snd_pcm_substream *substream) |
1da177e4 | 270 | { |
c631d03c TI |
271 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
272 | spin_lock(&dpcm->lock); | |
b142037b TI |
273 | dpcm->base_time = jiffies; |
274 | dummy_systimer_rearm(dpcm); | |
c631d03c TI |
275 | spin_unlock(&dpcm->lock); |
276 | return 0; | |
1da177e4 LT |
277 | } |
278 | ||
c631d03c | 279 | static int dummy_systimer_stop(struct snd_pcm_substream *substream) |
1da177e4 | 280 | { |
c631d03c | 281 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
c8eb6ba1 | 282 | spin_lock(&dpcm->lock); |
c631d03c | 283 | del_timer(&dpcm->timer); |
c8eb6ba1 | 284 | spin_unlock(&dpcm->lock); |
6e65c1cc | 285 | return 0; |
1da177e4 LT |
286 | } |
287 | ||
c631d03c | 288 | static int dummy_systimer_prepare(struct snd_pcm_substream *substream) |
1da177e4 | 289 | { |
4a4d2cfd | 290 | struct snd_pcm_runtime *runtime = substream->runtime; |
c631d03c | 291 | struct dummy_systimer_pcm *dpcm = runtime->private_data; |
369b240d | 292 | |
b142037b TI |
293 | dpcm->frac_pos = 0; |
294 | dpcm->rate = runtime->rate; | |
295 | dpcm->frac_buffer_size = runtime->buffer_size * HZ; | |
296 | dpcm->frac_period_size = runtime->period_size * HZ; | |
b5d10781 TI |
297 | dpcm->frac_period_rest = dpcm->frac_period_size; |
298 | dpcm->elapsed = 0; | |
53463a83 | 299 | |
1da177e4 LT |
300 | return 0; |
301 | } | |
302 | ||
c631d03c | 303 | static void dummy_systimer_callback(unsigned long data) |
1da177e4 | 304 | { |
c631d03c | 305 | struct dummy_systimer_pcm *dpcm = (struct dummy_systimer_pcm *)data; |
b32425ac | 306 | unsigned long flags; |
b5d10781 | 307 | int elapsed = 0; |
1da177e4 | 308 | |
b32425ac | 309 | spin_lock_irqsave(&dpcm->lock, flags); |
b142037b TI |
310 | dummy_systimer_update(dpcm); |
311 | dummy_systimer_rearm(dpcm); | |
b5d10781 TI |
312 | elapsed = dpcm->elapsed; |
313 | dpcm->elapsed = 0; | |
b142037b | 314 | spin_unlock_irqrestore(&dpcm->lock, flags); |
b5d10781 TI |
315 | if (elapsed) |
316 | snd_pcm_period_elapsed(dpcm->substream); | |
1da177e4 LT |
317 | } |
318 | ||
c631d03c TI |
319 | static snd_pcm_uframes_t |
320 | dummy_systimer_pointer(struct snd_pcm_substream *substream) | |
1da177e4 | 321 | { |
b142037b | 322 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
b5d10781 | 323 | snd_pcm_uframes_t pos; |
1da177e4 | 324 | |
b142037b TI |
325 | spin_lock(&dpcm->lock); |
326 | dummy_systimer_update(dpcm); | |
b5d10781 | 327 | pos = dpcm->frac_pos / HZ; |
b142037b | 328 | spin_unlock(&dpcm->lock); |
b5d10781 | 329 | return pos; |
1da177e4 LT |
330 | } |
331 | ||
c631d03c | 332 | static int dummy_systimer_create(struct snd_pcm_substream *substream) |
1da177e4 | 333 | { |
c631d03c TI |
334 | struct dummy_systimer_pcm *dpcm; |
335 | ||
336 | dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); | |
337 | if (!dpcm) | |
338 | return -ENOMEM; | |
339 | substream->runtime->private_data = dpcm; | |
340 | init_timer(&dpcm->timer); | |
341 | dpcm->timer.data = (unsigned long) dpcm; | |
342 | dpcm->timer.function = dummy_systimer_callback; | |
343 | spin_lock_init(&dpcm->lock); | |
344 | dpcm->substream = substream; | |
345 | return 0; | |
346 | } | |
347 | ||
348 | static void dummy_systimer_free(struct snd_pcm_substream *substream) | |
349 | { | |
350 | kfree(substream->runtime->private_data); | |
351 | } | |
352 | ||
353 | static struct dummy_timer_ops dummy_systimer_ops = { | |
354 | .create = dummy_systimer_create, | |
355 | .free = dummy_systimer_free, | |
356 | .prepare = dummy_systimer_prepare, | |
357 | .start = dummy_systimer_start, | |
358 | .stop = dummy_systimer_stop, | |
359 | .pointer = dummy_systimer_pointer, | |
1da177e4 LT |
360 | }; |
361 | ||
c631d03c TI |
362 | #ifdef CONFIG_HIGH_RES_TIMERS |
363 | /* | |
364 | * hrtimer interface | |
365 | */ | |
366 | ||
367 | struct dummy_hrtimer_pcm { | |
368 | ktime_t base_time; | |
369 | ktime_t period_time; | |
370 | atomic_t running; | |
371 | struct hrtimer timer; | |
372 | struct tasklet_struct tasklet; | |
373 | struct snd_pcm_substream *substream; | |
374 | }; | |
375 | ||
376 | static void dummy_hrtimer_pcm_elapsed(unsigned long priv) | |
377 | { | |
378 | struct dummy_hrtimer_pcm *dpcm = (struct dummy_hrtimer_pcm *)priv; | |
379 | if (atomic_read(&dpcm->running)) | |
380 | snd_pcm_period_elapsed(dpcm->substream); | |
381 | } | |
382 | ||
383 | static enum hrtimer_restart dummy_hrtimer_callback(struct hrtimer *timer) | |
384 | { | |
385 | struct dummy_hrtimer_pcm *dpcm; | |
386 | ||
387 | dpcm = container_of(timer, struct dummy_hrtimer_pcm, timer); | |
388 | if (!atomic_read(&dpcm->running)) | |
389 | return HRTIMER_NORESTART; | |
390 | tasklet_schedule(&dpcm->tasklet); | |
391 | hrtimer_forward_now(timer, dpcm->period_time); | |
392 | return HRTIMER_RESTART; | |
393 | } | |
394 | ||
395 | static int dummy_hrtimer_start(struct snd_pcm_substream *substream) | |
396 | { | |
397 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; | |
398 | ||
399 | dpcm->base_time = hrtimer_cb_get_time(&dpcm->timer); | |
400 | hrtimer_start(&dpcm->timer, dpcm->period_time, HRTIMER_MODE_REL); | |
401 | atomic_set(&dpcm->running, 1); | |
402 | return 0; | |
403 | } | |
404 | ||
405 | static int dummy_hrtimer_stop(struct snd_pcm_substream *substream) | |
406 | { | |
407 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; | |
408 | ||
409 | atomic_set(&dpcm->running, 0); | |
410 | hrtimer_cancel(&dpcm->timer); | |
411 | return 0; | |
412 | } | |
413 | ||
414 | static inline void dummy_hrtimer_sync(struct dummy_hrtimer_pcm *dpcm) | |
415 | { | |
416 | tasklet_kill(&dpcm->tasklet); | |
417 | } | |
418 | ||
419 | static snd_pcm_uframes_t | |
420 | dummy_hrtimer_pointer(struct snd_pcm_substream *substream) | |
421 | { | |
422 | struct snd_pcm_runtime *runtime = substream->runtime; | |
423 | struct dummy_hrtimer_pcm *dpcm = runtime->private_data; | |
424 | u64 delta; | |
425 | u32 pos; | |
426 | ||
427 | delta = ktime_us_delta(hrtimer_cb_get_time(&dpcm->timer), | |
428 | dpcm->base_time); | |
429 | delta = div_u64(delta * runtime->rate + 999999, 1000000); | |
430 | div_u64_rem(delta, runtime->buffer_size, &pos); | |
431 | return pos; | |
432 | } | |
433 | ||
434 | static int dummy_hrtimer_prepare(struct snd_pcm_substream *substream) | |
1da177e4 | 435 | { |
c631d03c TI |
436 | struct snd_pcm_runtime *runtime = substream->runtime; |
437 | struct dummy_hrtimer_pcm *dpcm = runtime->private_data; | |
438 | unsigned int period, rate; | |
439 | long sec; | |
440 | unsigned long nsecs; | |
441 | ||
442 | dummy_hrtimer_sync(dpcm); | |
443 | period = runtime->period_size; | |
444 | rate = runtime->rate; | |
445 | sec = period / rate; | |
446 | period %= rate; | |
447 | nsecs = div_u64((u64)period * 1000000000UL + rate - 1, rate); | |
448 | dpcm->period_time = ktime_set(sec, nsecs); | |
449 | ||
450 | return 0; | |
451 | } | |
452 | ||
453 | static int dummy_hrtimer_create(struct snd_pcm_substream *substream) | |
454 | { | |
455 | struct dummy_hrtimer_pcm *dpcm; | |
456 | ||
457 | dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); | |
458 | if (!dpcm) | |
459 | return -ENOMEM; | |
460 | substream->runtime->private_data = dpcm; | |
461 | hrtimer_init(&dpcm->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); | |
462 | dpcm->timer.function = dummy_hrtimer_callback; | |
463 | dpcm->substream = substream; | |
464 | atomic_set(&dpcm->running, 0); | |
465 | tasklet_init(&dpcm->tasklet, dummy_hrtimer_pcm_elapsed, | |
466 | (unsigned long)dpcm); | |
467 | return 0; | |
468 | } | |
469 | ||
470 | static void dummy_hrtimer_free(struct snd_pcm_substream *substream) | |
471 | { | |
472 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; | |
473 | dummy_hrtimer_sync(dpcm); | |
474 | kfree(dpcm); | |
475 | } | |
476 | ||
477 | static struct dummy_timer_ops dummy_hrtimer_ops = { | |
478 | .create = dummy_hrtimer_create, | |
479 | .free = dummy_hrtimer_free, | |
480 | .prepare = dummy_hrtimer_prepare, | |
481 | .start = dummy_hrtimer_start, | |
482 | .stop = dummy_hrtimer_stop, | |
483 | .pointer = dummy_hrtimer_pointer, | |
484 | }; | |
485 | ||
486 | #endif /* CONFIG_HIGH_RES_TIMERS */ | |
487 | ||
488 | /* | |
489 | * PCM interface | |
490 | */ | |
491 | ||
492 | static int dummy_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
493 | { | |
494 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); | |
495 | ||
496 | switch (cmd) { | |
497 | case SNDRV_PCM_TRIGGER_START: | |
498 | case SNDRV_PCM_TRIGGER_RESUME: | |
499 | return dummy->timer_ops->start(substream); | |
500 | case SNDRV_PCM_TRIGGER_STOP: | |
501 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
502 | return dummy->timer_ops->stop(substream); | |
503 | } | |
504 | return -EINVAL; | |
505 | } | |
506 | ||
507 | static int dummy_pcm_prepare(struct snd_pcm_substream *substream) | |
508 | { | |
c631d03c TI |
509 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); |
510 | ||
c631d03c TI |
511 | return dummy->timer_ops->prepare(substream); |
512 | } | |
513 | ||
514 | static snd_pcm_uframes_t dummy_pcm_pointer(struct snd_pcm_substream *substream) | |
515 | { | |
516 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); | |
517 | ||
518 | return dummy->timer_ops->pointer(substream); | |
519 | } | |
520 | ||
521 | static struct snd_pcm_hardware dummy_pcm_hardware = { | |
522 | .info = (SNDRV_PCM_INFO_MMAP | | |
523 | SNDRV_PCM_INFO_INTERLEAVED | | |
524 | SNDRV_PCM_INFO_RESUME | | |
525 | SNDRV_PCM_INFO_MMAP_VALID), | |
1da177e4 LT |
526 | .formats = USE_FORMATS, |
527 | .rates = USE_RATE, | |
528 | .rate_min = USE_RATE_MIN, | |
529 | .rate_max = USE_RATE_MAX, | |
530 | .channels_min = USE_CHANNELS_MIN, | |
531 | .channels_max = USE_CHANNELS_MAX, | |
532 | .buffer_bytes_max = MAX_BUFFER_SIZE, | |
d5e1ca05 | 533 | .period_bytes_min = MIN_PERIOD_SIZE, |
2ad5dd8d | 534 | .period_bytes_max = MAX_PERIOD_SIZE, |
1da177e4 LT |
535 | .periods_min = USE_PERIODS_MIN, |
536 | .periods_max = USE_PERIODS_MAX, | |
537 | .fifo_size = 0, | |
538 | }; | |
539 | ||
c631d03c TI |
540 | static int dummy_pcm_hw_params(struct snd_pcm_substream *substream, |
541 | struct snd_pcm_hw_params *hw_params) | |
1da177e4 | 542 | { |
a68c4d11 TI |
543 | if (fake_buffer) { |
544 | /* runtime->dma_bytes has to be set manually to allow mmap */ | |
545 | substream->runtime->dma_bytes = params_buffer_bytes(hw_params); | |
546 | return 0; | |
547 | } | |
c631d03c TI |
548 | return snd_pcm_lib_malloc_pages(substream, |
549 | params_buffer_bytes(hw_params)); | |
1da177e4 LT |
550 | } |
551 | ||
c631d03c | 552 | static int dummy_pcm_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 553 | { |
a68c4d11 TI |
554 | if (fake_buffer) |
555 | return 0; | |
1da177e4 LT |
556 | return snd_pcm_lib_free_pages(substream); |
557 | } | |
558 | ||
c631d03c | 559 | static int dummy_pcm_open(struct snd_pcm_substream *substream) |
c8eb6ba1 | 560 | { |
c631d03c | 561 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); |
d5e1ca05 | 562 | struct dummy_model *model = dummy->model; |
4a4d2cfd | 563 | struct snd_pcm_runtime *runtime = substream->runtime; |
c8eb6ba1 TI |
564 | int err; |
565 | ||
c631d03c TI |
566 | dummy->timer_ops = &dummy_systimer_ops; |
567 | #ifdef CONFIG_HIGH_RES_TIMERS | |
568 | if (hrtimer) | |
569 | dummy->timer_ops = &dummy_hrtimer_ops; | |
570 | #endif | |
571 | ||
572 | err = dummy->timer_ops->create(substream); | |
1a11cb64 | 573 | if (err < 0) |
1da177e4 | 574 | return err; |
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 TI |
595 | if (err < 0) { |
596 | dummy->timer_ops->free(substream); | |
1da177e4 | 597 | return err; |
c631d03c | 598 | } |
1da177e4 LT |
599 | return 0; |
600 | } | |
601 | ||
c631d03c | 602 | static int dummy_pcm_close(struct snd_pcm_substream *substream) |
1da177e4 | 603 | { |
c631d03c TI |
604 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); |
605 | dummy->timer_ops->free(substream); | |
1da177e4 LT |
606 | return 0; |
607 | } | |
608 | ||
a68c4d11 TI |
609 | /* |
610 | * dummy buffer handling | |
611 | */ | |
612 | ||
613 | static void *dummy_page[2]; | |
614 | ||
615 | static void free_fake_buffer(void) | |
616 | { | |
617 | if (fake_buffer) { | |
618 | int i; | |
619 | for (i = 0; i < 2; i++) | |
620 | if (dummy_page[i]) { | |
621 | free_page((unsigned long)dummy_page[i]); | |
622 | dummy_page[i] = NULL; | |
623 | } | |
624 | } | |
625 | } | |
626 | ||
627 | static int alloc_fake_buffer(void) | |
628 | { | |
629 | int i; | |
630 | ||
631 | if (!fake_buffer) | |
632 | return 0; | |
633 | for (i = 0; i < 2; i++) { | |
634 | dummy_page[i] = (void *)get_zeroed_page(GFP_KERNEL); | |
635 | if (!dummy_page[i]) { | |
636 | free_fake_buffer(); | |
637 | return -ENOMEM; | |
638 | } | |
639 | } | |
640 | return 0; | |
641 | } | |
642 | ||
643 | static int dummy_pcm_copy(struct snd_pcm_substream *substream, | |
644 | int channel, snd_pcm_uframes_t pos, | |
645 | void __user *dst, snd_pcm_uframes_t count) | |
646 | { | |
647 | return 0; /* do nothing */ | |
648 | } | |
649 | ||
650 | static int dummy_pcm_silence(struct snd_pcm_substream *substream, | |
651 | int channel, snd_pcm_uframes_t pos, | |
652 | snd_pcm_uframes_t count) | |
653 | { | |
654 | return 0; /* do nothing */ | |
655 | } | |
656 | ||
657 | static struct page *dummy_pcm_page(struct snd_pcm_substream *substream, | |
658 | unsigned long offset) | |
659 | { | |
660 | return virt_to_page(dummy_page[substream->stream]); /* the same page */ | |
661 | } | |
662 | ||
c631d03c TI |
663 | static struct snd_pcm_ops dummy_pcm_ops = { |
664 | .open = dummy_pcm_open, | |
665 | .close = dummy_pcm_close, | |
666 | .ioctl = snd_pcm_lib_ioctl, | |
667 | .hw_params = dummy_pcm_hw_params, | |
668 | .hw_free = dummy_pcm_hw_free, | |
669 | .prepare = dummy_pcm_prepare, | |
670 | .trigger = dummy_pcm_trigger, | |
671 | .pointer = dummy_pcm_pointer, | |
1da177e4 LT |
672 | }; |
673 | ||
a68c4d11 TI |
674 | static struct snd_pcm_ops dummy_pcm_ops_no_buf = { |
675 | .open = dummy_pcm_open, | |
676 | .close = dummy_pcm_close, | |
677 | .ioctl = snd_pcm_lib_ioctl, | |
678 | .hw_params = dummy_pcm_hw_params, | |
679 | .hw_free = dummy_pcm_hw_free, | |
680 | .prepare = dummy_pcm_prepare, | |
681 | .trigger = dummy_pcm_trigger, | |
682 | .pointer = dummy_pcm_pointer, | |
683 | .copy = dummy_pcm_copy, | |
684 | .silence = dummy_pcm_silence, | |
685 | .page = dummy_pcm_page, | |
686 | }; | |
687 | ||
788c6043 PB |
688 | static int __devinit snd_card_dummy_pcm(struct snd_dummy *dummy, int device, |
689 | int substreams) | |
1da177e4 | 690 | { |
4a4d2cfd | 691 | struct snd_pcm *pcm; |
a68c4d11 | 692 | struct snd_pcm_ops *ops; |
1da177e4 LT |
693 | int err; |
694 | ||
1a11cb64 JK |
695 | err = snd_pcm_new(dummy->card, "Dummy PCM", device, |
696 | substreams, substreams, &pcm); | |
697 | if (err < 0) | |
1da177e4 | 698 | return err; |
6e65c1cc | 699 | dummy->pcm = pcm; |
a68c4d11 TI |
700 | if (fake_buffer) |
701 | ops = &dummy_pcm_ops_no_buf; | |
702 | else | |
703 | ops = &dummy_pcm_ops; | |
704 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, ops); | |
705 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, ops); | |
1da177e4 LT |
706 | pcm->private_data = dummy; |
707 | pcm->info_flags = 0; | |
708 | strcpy(pcm->name, "Dummy PCM"); | |
a68c4d11 TI |
709 | if (!fake_buffer) { |
710 | snd_pcm_lib_preallocate_pages_for_all(pcm, | |
711 | SNDRV_DMA_TYPE_CONTINUOUS, | |
712 | snd_dma_continuous_data(GFP_KERNEL), | |
713 | 0, 64*1024); | |
714 | } | |
1da177e4 LT |
715 | return 0; |
716 | } | |
717 | ||
9b151fec TI |
718 | /* |
719 | * mixer interface | |
720 | */ | |
721 | ||
1da177e4 | 722 | #define DUMMY_VOLUME(xname, xindex, addr) \ |
fb567a8e TI |
723 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ |
724 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \ | |
725 | .name = xname, .index = xindex, \ | |
1da177e4 LT |
726 | .info = snd_dummy_volume_info, \ |
727 | .get = snd_dummy_volume_get, .put = snd_dummy_volume_put, \ | |
fb567a8e TI |
728 | .private_value = addr, \ |
729 | .tlv = { .p = db_scale_dummy } } | |
1da177e4 | 730 | |
4a4d2cfd TI |
731 | static int snd_dummy_volume_info(struct snd_kcontrol *kcontrol, |
732 | struct snd_ctl_elem_info *uinfo) | |
1da177e4 LT |
733 | { |
734 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
735 | uinfo->count = 2; | |
736 | uinfo->value.integer.min = -50; | |
737 | uinfo->value.integer.max = 100; | |
738 | return 0; | |
739 | } | |
740 | ||
4a4d2cfd TI |
741 | static int snd_dummy_volume_get(struct snd_kcontrol *kcontrol, |
742 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 743 | { |
4a4d2cfd | 744 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
745 | int addr = kcontrol->private_value; |
746 | ||
c8eb6ba1 | 747 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
748 | ucontrol->value.integer.value[0] = dummy->mixer_volume[addr][0]; |
749 | ucontrol->value.integer.value[1] = dummy->mixer_volume[addr][1]; | |
c8eb6ba1 | 750 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
751 | return 0; |
752 | } | |
753 | ||
4a4d2cfd TI |
754 | static int snd_dummy_volume_put(struct snd_kcontrol *kcontrol, |
755 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 756 | { |
4a4d2cfd | 757 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
758 | int change, addr = kcontrol->private_value; |
759 | int left, right; | |
760 | ||
761 | left = ucontrol->value.integer.value[0]; | |
762 | if (left < -50) | |
763 | left = -50; | |
764 | if (left > 100) | |
765 | left = 100; | |
766 | right = ucontrol->value.integer.value[1]; | |
767 | if (right < -50) | |
768 | right = -50; | |
769 | if (right > 100) | |
770 | right = 100; | |
c8eb6ba1 | 771 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
772 | change = dummy->mixer_volume[addr][0] != left || |
773 | dummy->mixer_volume[addr][1] != right; | |
774 | dummy->mixer_volume[addr][0] = left; | |
775 | dummy->mixer_volume[addr][1] = right; | |
c8eb6ba1 | 776 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
777 | return change; |
778 | } | |
779 | ||
0cb29ea0 | 780 | static const DECLARE_TLV_DB_SCALE(db_scale_dummy, -4500, 30, 0); |
fb567a8e | 781 | |
1da177e4 LT |
782 | #define DUMMY_CAPSRC(xname, xindex, addr) \ |
783 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ | |
784 | .info = snd_dummy_capsrc_info, \ | |
785 | .get = snd_dummy_capsrc_get, .put = snd_dummy_capsrc_put, \ | |
786 | .private_value = addr } | |
787 | ||
a5ce8890 | 788 | #define snd_dummy_capsrc_info snd_ctl_boolean_stereo_info |
1da177e4 | 789 | |
4a4d2cfd TI |
790 | static int snd_dummy_capsrc_get(struct snd_kcontrol *kcontrol, |
791 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 792 | { |
4a4d2cfd | 793 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
794 | int addr = kcontrol->private_value; |
795 | ||
c8eb6ba1 | 796 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
797 | ucontrol->value.integer.value[0] = dummy->capture_source[addr][0]; |
798 | ucontrol->value.integer.value[1] = dummy->capture_source[addr][1]; | |
c8eb6ba1 | 799 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
800 | return 0; |
801 | } | |
802 | ||
4a4d2cfd | 803 | static int snd_dummy_capsrc_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1da177e4 | 804 | { |
4a4d2cfd | 805 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
806 | int change, addr = kcontrol->private_value; |
807 | int left, right; | |
808 | ||
809 | left = ucontrol->value.integer.value[0] & 1; | |
810 | right = ucontrol->value.integer.value[1] & 1; | |
c8eb6ba1 | 811 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
812 | change = dummy->capture_source[addr][0] != left && |
813 | dummy->capture_source[addr][1] != right; | |
814 | dummy->capture_source[addr][0] = left; | |
815 | dummy->capture_source[addr][1] = right; | |
c8eb6ba1 | 816 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
817 | return change; |
818 | } | |
819 | ||
4a4d2cfd | 820 | static struct snd_kcontrol_new snd_dummy_controls[] = { |
1da177e4 LT |
821 | DUMMY_VOLUME("Master Volume", 0, MIXER_ADDR_MASTER), |
822 | DUMMY_CAPSRC("Master Capture Switch", 0, MIXER_ADDR_MASTER), | |
823 | DUMMY_VOLUME("Synth Volume", 0, MIXER_ADDR_SYNTH), | |
e05d6964 | 824 | DUMMY_CAPSRC("Synth Capture Switch", 0, MIXER_ADDR_SYNTH), |
1da177e4 | 825 | DUMMY_VOLUME("Line Volume", 0, MIXER_ADDR_LINE), |
e05d6964 | 826 | DUMMY_CAPSRC("Line Capture Switch", 0, MIXER_ADDR_LINE), |
1da177e4 | 827 | DUMMY_VOLUME("Mic Volume", 0, MIXER_ADDR_MIC), |
e05d6964 | 828 | DUMMY_CAPSRC("Mic Capture Switch", 0, MIXER_ADDR_MIC), |
1da177e4 | 829 | DUMMY_VOLUME("CD Volume", 0, MIXER_ADDR_CD), |
e05d6964 | 830 | DUMMY_CAPSRC("CD Capture Switch", 0, MIXER_ADDR_CD) |
1da177e4 LT |
831 | }; |
832 | ||
788c6043 | 833 | static int __devinit snd_card_dummy_new_mixer(struct snd_dummy *dummy) |
1da177e4 | 834 | { |
4a4d2cfd | 835 | struct snd_card *card = dummy->card; |
1da177e4 LT |
836 | unsigned int idx; |
837 | int err; | |
838 | ||
1da177e4 LT |
839 | spin_lock_init(&dummy->mixer_lock); |
840 | strcpy(card->mixername, "Dummy Mixer"); | |
841 | ||
842 | for (idx = 0; idx < ARRAY_SIZE(snd_dummy_controls); idx++) { | |
1a11cb64 JK |
843 | err = snd_ctl_add(card, snd_ctl_new1(&snd_dummy_controls[idx], dummy)); |
844 | if (err < 0) | |
1da177e4 LT |
845 | return err; |
846 | } | |
847 | return 0; | |
848 | } | |
849 | ||
9b151fec TI |
850 | #if defined(CONFIG_SND_DEBUG) && defined(CONFIG_PROC_FS) |
851 | /* | |
852 | * proc interface | |
853 | */ | |
d5e1ca05 JK |
854 | static void print_formats(struct snd_dummy *dummy, |
855 | struct snd_info_buffer *buffer) | |
9b151fec TI |
856 | { |
857 | int i; | |
858 | ||
859 | for (i = 0; i < SNDRV_PCM_FORMAT_LAST; i++) { | |
d5e1ca05 | 860 | if (dummy->pcm_hw.formats & (1ULL << i)) |
9b151fec TI |
861 | snd_iprintf(buffer, " %s", snd_pcm_format_name(i)); |
862 | } | |
863 | } | |
864 | ||
d5e1ca05 JK |
865 | static void print_rates(struct snd_dummy *dummy, |
866 | struct snd_info_buffer *buffer) | |
9b151fec TI |
867 | { |
868 | static int rates[] = { | |
869 | 5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000, | |
870 | 64000, 88200, 96000, 176400, 192000, | |
871 | }; | |
872 | int i; | |
873 | ||
d5e1ca05 | 874 | if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_CONTINUOUS) |
9b151fec | 875 | snd_iprintf(buffer, " continuous"); |
d5e1ca05 | 876 | if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_KNOT) |
9b151fec TI |
877 | snd_iprintf(buffer, " knot"); |
878 | for (i = 0; i < ARRAY_SIZE(rates); i++) | |
d5e1ca05 | 879 | if (dummy->pcm_hw.rates & (1 << i)) |
9b151fec TI |
880 | snd_iprintf(buffer, " %d", rates[i]); |
881 | } | |
882 | ||
d5e1ca05 JK |
883 | #define get_dummy_int_ptr(dummy, ofs) \ |
884 | (unsigned int *)((char *)&((dummy)->pcm_hw) + (ofs)) | |
885 | #define get_dummy_ll_ptr(dummy, ofs) \ | |
886 | (unsigned long long *)((char *)&((dummy)->pcm_hw) + (ofs)) | |
9b151fec TI |
887 | |
888 | struct dummy_hw_field { | |
889 | const char *name; | |
890 | const char *format; | |
891 | unsigned int offset; | |
892 | unsigned int size; | |
893 | }; | |
894 | #define FIELD_ENTRY(item, fmt) { \ | |
895 | .name = #item, \ | |
896 | .format = fmt, \ | |
897 | .offset = offsetof(struct snd_pcm_hardware, item), \ | |
898 | .size = sizeof(dummy_pcm_hardware.item) } | |
899 | ||
900 | static struct dummy_hw_field fields[] = { | |
901 | FIELD_ENTRY(formats, "%#llx"), | |
902 | FIELD_ENTRY(rates, "%#x"), | |
903 | FIELD_ENTRY(rate_min, "%d"), | |
904 | FIELD_ENTRY(rate_max, "%d"), | |
905 | FIELD_ENTRY(channels_min, "%d"), | |
906 | FIELD_ENTRY(channels_max, "%d"), | |
907 | FIELD_ENTRY(buffer_bytes_max, "%ld"), | |
908 | FIELD_ENTRY(period_bytes_min, "%ld"), | |
909 | FIELD_ENTRY(period_bytes_max, "%ld"), | |
910 | FIELD_ENTRY(periods_min, "%d"), | |
911 | FIELD_ENTRY(periods_max, "%d"), | |
912 | }; | |
913 | ||
914 | static void dummy_proc_read(struct snd_info_entry *entry, | |
915 | struct snd_info_buffer *buffer) | |
916 | { | |
d5e1ca05 | 917 | struct snd_dummy *dummy = entry->private_data; |
9b151fec TI |
918 | int i; |
919 | ||
920 | for (i = 0; i < ARRAY_SIZE(fields); i++) { | |
921 | snd_iprintf(buffer, "%s ", fields[i].name); | |
922 | if (fields[i].size == sizeof(int)) | |
923 | snd_iprintf(buffer, fields[i].format, | |
d5e1ca05 | 924 | *get_dummy_int_ptr(dummy, fields[i].offset)); |
9b151fec TI |
925 | else |
926 | snd_iprintf(buffer, fields[i].format, | |
d5e1ca05 | 927 | *get_dummy_ll_ptr(dummy, fields[i].offset)); |
9b151fec | 928 | if (!strcmp(fields[i].name, "formats")) |
d5e1ca05 | 929 | print_formats(dummy, buffer); |
9b151fec | 930 | else if (!strcmp(fields[i].name, "rates")) |
d5e1ca05 | 931 | print_rates(dummy, buffer); |
9b151fec TI |
932 | snd_iprintf(buffer, "\n"); |
933 | } | |
934 | } | |
935 | ||
936 | static void dummy_proc_write(struct snd_info_entry *entry, | |
937 | struct snd_info_buffer *buffer) | |
938 | { | |
d5e1ca05 | 939 | struct snd_dummy *dummy = entry->private_data; |
9b151fec TI |
940 | char line[64]; |
941 | ||
942 | while (!snd_info_get_line(buffer, line, sizeof(line))) { | |
943 | char item[20]; | |
944 | const char *ptr; | |
945 | unsigned long long val; | |
946 | int i; | |
947 | ||
948 | ptr = snd_info_get_str(item, line, sizeof(item)); | |
949 | for (i = 0; i < ARRAY_SIZE(fields); i++) { | |
950 | if (!strcmp(item, fields[i].name)) | |
951 | break; | |
952 | } | |
953 | if (i >= ARRAY_SIZE(fields)) | |
954 | continue; | |
955 | snd_info_get_str(item, ptr, sizeof(item)); | |
956 | if (strict_strtoull(item, 0, &val)) | |
957 | continue; | |
958 | if (fields[i].size == sizeof(int)) | |
d5e1ca05 | 959 | *get_dummy_int_ptr(dummy, fields[i].offset) = val; |
9b151fec | 960 | else |
d5e1ca05 | 961 | *get_dummy_ll_ptr(dummy, fields[i].offset) = val; |
9b151fec TI |
962 | } |
963 | } | |
964 | ||
965 | static void __devinit dummy_proc_init(struct snd_dummy *chip) | |
966 | { | |
967 | struct snd_info_entry *entry; | |
968 | ||
969 | if (!snd_card_proc_new(chip->card, "dummy_pcm", &entry)) { | |
970 | snd_info_set_text_ops(entry, chip, dummy_proc_read); | |
971 | entry->c.text.write = dummy_proc_write; | |
972 | entry->mode |= S_IWUSR; | |
d5e1ca05 | 973 | entry->private_data = chip; |
9b151fec TI |
974 | } |
975 | } | |
976 | #else | |
977 | #define dummy_proc_init(x) | |
978 | #endif /* CONFIG_SND_DEBUG && CONFIG_PROC_FS */ | |
979 | ||
788c6043 | 980 | static int __devinit snd_dummy_probe(struct platform_device *devptr) |
1da177e4 | 981 | { |
4a4d2cfd TI |
982 | struct snd_card *card; |
983 | struct snd_dummy *dummy; | |
d5e1ca05 | 984 | struct dummy_model *m = NULL, **mdl; |
1da177e4 | 985 | int idx, err; |
6e65c1cc | 986 | int dev = devptr->id; |
1da177e4 | 987 | |
bd7dd77c TI |
988 | err = snd_card_create(index[dev], id[dev], THIS_MODULE, |
989 | sizeof(struct snd_dummy), &card); | |
990 | if (err < 0) | |
991 | return err; | |
4a4d2cfd | 992 | dummy = card->private_data; |
1da177e4 | 993 | dummy->card = card; |
d5e1ca05 JK |
994 | for (mdl = dummy_models; *mdl && model[dev]; mdl++) { |
995 | if (strcmp(model[dev], (*mdl)->name) == 0) { | |
996 | printk(KERN_INFO | |
997 | "snd-dummy: Using model '%s' for card %i\n", | |
998 | (*mdl)->name, card->number); | |
999 | m = dummy->model = *mdl; | |
1000 | break; | |
1001 | } | |
1002 | } | |
1da177e4 LT |
1003 | for (idx = 0; idx < MAX_PCM_DEVICES && idx < pcm_devs[dev]; idx++) { |
1004 | if (pcm_substreams[dev] < 1) | |
1005 | pcm_substreams[dev] = 1; | |
1006 | if (pcm_substreams[dev] > MAX_PCM_SUBSTREAMS) | |
1007 | pcm_substreams[dev] = MAX_PCM_SUBSTREAMS; | |
1a11cb64 JK |
1008 | err = snd_card_dummy_pcm(dummy, idx, pcm_substreams[dev]); |
1009 | if (err < 0) | |
1da177e4 LT |
1010 | goto __nodev; |
1011 | } | |
d5e1ca05 JK |
1012 | |
1013 | dummy->pcm_hw = dummy_pcm_hardware; | |
1014 | if (m) { | |
1015 | if (m->formats) | |
1016 | dummy->pcm_hw.formats = m->formats; | |
1017 | if (m->buffer_bytes_max) | |
1018 | dummy->pcm_hw.buffer_bytes_max = m->buffer_bytes_max; | |
1019 | if (m->period_bytes_min) | |
1020 | dummy->pcm_hw.period_bytes_min = m->period_bytes_min; | |
1021 | if (m->period_bytes_max) | |
1022 | dummy->pcm_hw.period_bytes_max = m->period_bytes_max; | |
1023 | if (m->periods_min) | |
1024 | dummy->pcm_hw.periods_min = m->periods_min; | |
1025 | if (m->periods_max) | |
1026 | dummy->pcm_hw.periods_max = m->periods_max; | |
1027 | if (m->rates) | |
1028 | dummy->pcm_hw.rates = m->rates; | |
1029 | if (m->rate_min) | |
1030 | dummy->pcm_hw.rate_min = m->rate_min; | |
1031 | if (m->rate_max) | |
1032 | dummy->pcm_hw.rate_max = m->rate_max; | |
1033 | if (m->channels_min) | |
1034 | dummy->pcm_hw.channels_min = m->channels_min; | |
1035 | if (m->channels_max) | |
1036 | dummy->pcm_hw.channels_max = m->channels_max; | |
1037 | } | |
1038 | ||
1a11cb64 JK |
1039 | err = snd_card_dummy_new_mixer(dummy); |
1040 | if (err < 0) | |
1da177e4 LT |
1041 | goto __nodev; |
1042 | strcpy(card->driver, "Dummy"); | |
1043 | strcpy(card->shortname, "Dummy"); | |
1044 | sprintf(card->longname, "Dummy %i", dev + 1); | |
16dab54b | 1045 | |
9b151fec TI |
1046 | dummy_proc_init(dummy); |
1047 | ||
6e65c1cc | 1048 | snd_card_set_dev(card, &devptr->dev); |
16dab54b | 1049 | |
1a11cb64 JK |
1050 | err = snd_card_register(card); |
1051 | if (err == 0) { | |
6e65c1cc | 1052 | platform_set_drvdata(devptr, card); |
1da177e4 LT |
1053 | return 0; |
1054 | } | |
1055 | __nodev: | |
1056 | snd_card_free(card); | |
1057 | return err; | |
1058 | } | |
1059 | ||
788c6043 | 1060 | static int __devexit snd_dummy_remove(struct platform_device *devptr) |
6e65c1cc TI |
1061 | { |
1062 | snd_card_free(platform_get_drvdata(devptr)); | |
1063 | platform_set_drvdata(devptr, NULL); | |
1064 | return 0; | |
1065 | } | |
1066 | ||
d34e4e00 | 1067 | #ifdef CONFIG_PM_SLEEP |
284e7ca7 | 1068 | static int snd_dummy_suspend(struct device *pdev) |
1da177e4 | 1069 | { |
284e7ca7 | 1070 | struct snd_card *card = dev_get_drvdata(pdev); |
6e65c1cc | 1071 | struct snd_dummy *dummy = card->private_data; |
1da177e4 | 1072 | |
6e65c1cc TI |
1073 | snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
1074 | snd_pcm_suspend_all(dummy->pcm); | |
1075 | return 0; | |
1076 | } | |
1077 | ||
284e7ca7 | 1078 | static int snd_dummy_resume(struct device *pdev) |
6e65c1cc | 1079 | { |
284e7ca7 | 1080 | struct snd_card *card = dev_get_drvdata(pdev); |
6e65c1cc TI |
1081 | |
1082 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); | |
1083 | return 0; | |
1084 | } | |
284e7ca7 TI |
1085 | |
1086 | static SIMPLE_DEV_PM_OPS(snd_dummy_pm, snd_dummy_suspend, snd_dummy_resume); | |
1087 | #define SND_DUMMY_PM_OPS &snd_dummy_pm | |
1088 | #else | |
1089 | #define SND_DUMMY_PM_OPS NULL | |
6e65c1cc TI |
1090 | #endif |
1091 | ||
1092 | #define SND_DUMMY_DRIVER "snd_dummy" | |
1093 | ||
1094 | static struct platform_driver snd_dummy_driver = { | |
1095 | .probe = snd_dummy_probe, | |
788c6043 | 1096 | .remove = __devexit_p(snd_dummy_remove), |
6e65c1cc | 1097 | .driver = { |
8bf01d8a TI |
1098 | .name = SND_DUMMY_DRIVER, |
1099 | .owner = THIS_MODULE, | |
284e7ca7 | 1100 | .pm = SND_DUMMY_PM_OPS, |
6e65c1cc TI |
1101 | }, |
1102 | }; | |
1103 | ||
c12aad6e | 1104 | static void snd_dummy_unregister_all(void) |
f7a9275d CL |
1105 | { |
1106 | int i; | |
1107 | ||
1108 | for (i = 0; i < ARRAY_SIZE(devices); ++i) | |
1109 | platform_device_unregister(devices[i]); | |
1110 | platform_driver_unregister(&snd_dummy_driver); | |
a68c4d11 | 1111 | free_fake_buffer(); |
f7a9275d CL |
1112 | } |
1113 | ||
6e65c1cc TI |
1114 | static int __init alsa_card_dummy_init(void) |
1115 | { | |
1116 | int i, cards, err; | |
1117 | ||
1a11cb64 JK |
1118 | err = platform_driver_register(&snd_dummy_driver); |
1119 | if (err < 0) | |
6e65c1cc TI |
1120 | return err; |
1121 | ||
a68c4d11 TI |
1122 | err = alloc_fake_buffer(); |
1123 | if (err < 0) { | |
1124 | platform_driver_unregister(&snd_dummy_driver); | |
1125 | return err; | |
1126 | } | |
1127 | ||
6e65c1cc | 1128 | cards = 0; |
8278ca8f | 1129 | for (i = 0; i < SNDRV_CARDS; i++) { |
6e65c1cc | 1130 | struct platform_device *device; |
8278ca8f TI |
1131 | if (! enable[i]) |
1132 | continue; | |
6e65c1cc TI |
1133 | device = platform_device_register_simple(SND_DUMMY_DRIVER, |
1134 | i, NULL, 0); | |
a182ee98 RH |
1135 | if (IS_ERR(device)) |
1136 | continue; | |
7152447d RH |
1137 | if (!platform_get_drvdata(device)) { |
1138 | platform_device_unregister(device); | |
1139 | continue; | |
1140 | } | |
f7a9275d | 1141 | devices[i] = device; |
1da177e4 LT |
1142 | cards++; |
1143 | } | |
1144 | if (!cards) { | |
1145 | #ifdef MODULE | |
1146 | printk(KERN_ERR "Dummy soundcard not found or device busy\n"); | |
1147 | #endif | |
a182ee98 RH |
1148 | snd_dummy_unregister_all(); |
1149 | return -ENODEV; | |
1da177e4 LT |
1150 | } |
1151 | return 0; | |
1152 | } | |
1153 | ||
1154 | static void __exit alsa_card_dummy_exit(void) | |
1155 | { | |
f7a9275d | 1156 | snd_dummy_unregister_all(); |
1da177e4 LT |
1157 | } |
1158 | ||
1159 | module_init(alsa_card_dummy_init) | |
1160 | module_exit(alsa_card_dummy_exit) |