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