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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]; | |
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 | { | |
2a52b6ee RK |
248 | mod_timer(&dpcm->timer, jiffies + |
249 | (dpcm->frac_period_rest + dpcm->rate - 1) / dpcm->rate); | |
b142037b TI |
250 | } |
251 | ||
252 | static void dummy_systimer_update(struct dummy_systimer_pcm *dpcm) | |
253 | { | |
254 | unsigned long delta; | |
255 | ||
256 | delta = jiffies - dpcm->base_time; | |
257 | if (!delta) | |
258 | return; | |
b5d10781 TI |
259 | dpcm->base_time += delta; |
260 | delta *= dpcm->rate; | |
261 | dpcm->frac_pos += delta; | |
b142037b TI |
262 | while (dpcm->frac_pos >= dpcm->frac_buffer_size) |
263 | dpcm->frac_pos -= dpcm->frac_buffer_size; | |
b5d10781 TI |
264 | while (dpcm->frac_period_rest <= delta) { |
265 | dpcm->elapsed++; | |
266 | dpcm->frac_period_rest += dpcm->frac_period_size; | |
267 | } | |
268 | dpcm->frac_period_rest -= delta; | |
b142037b TI |
269 | } |
270 | ||
c631d03c | 271 | static int dummy_systimer_start(struct snd_pcm_substream *substream) |
1da177e4 | 272 | { |
c631d03c TI |
273 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
274 | spin_lock(&dpcm->lock); | |
b142037b TI |
275 | dpcm->base_time = jiffies; |
276 | dummy_systimer_rearm(dpcm); | |
c631d03c TI |
277 | spin_unlock(&dpcm->lock); |
278 | return 0; | |
1da177e4 LT |
279 | } |
280 | ||
c631d03c | 281 | static int dummy_systimer_stop(struct snd_pcm_substream *substream) |
1da177e4 | 282 | { |
c631d03c | 283 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
c8eb6ba1 | 284 | spin_lock(&dpcm->lock); |
c631d03c | 285 | del_timer(&dpcm->timer); |
c8eb6ba1 | 286 | spin_unlock(&dpcm->lock); |
6e65c1cc | 287 | return 0; |
1da177e4 LT |
288 | } |
289 | ||
c631d03c | 290 | static int dummy_systimer_prepare(struct snd_pcm_substream *substream) |
1da177e4 | 291 | { |
4a4d2cfd | 292 | struct snd_pcm_runtime *runtime = substream->runtime; |
c631d03c | 293 | struct dummy_systimer_pcm *dpcm = runtime->private_data; |
369b240d | 294 | |
b142037b TI |
295 | dpcm->frac_pos = 0; |
296 | dpcm->rate = runtime->rate; | |
297 | dpcm->frac_buffer_size = runtime->buffer_size * HZ; | |
298 | dpcm->frac_period_size = runtime->period_size * HZ; | |
b5d10781 TI |
299 | dpcm->frac_period_rest = dpcm->frac_period_size; |
300 | dpcm->elapsed = 0; | |
53463a83 | 301 | |
1da177e4 LT |
302 | return 0; |
303 | } | |
304 | ||
c631d03c | 305 | static void dummy_systimer_callback(unsigned long data) |
1da177e4 | 306 | { |
c631d03c | 307 | struct dummy_systimer_pcm *dpcm = (struct dummy_systimer_pcm *)data; |
b32425ac | 308 | unsigned long flags; |
b5d10781 | 309 | int elapsed = 0; |
1da177e4 | 310 | |
b32425ac | 311 | spin_lock_irqsave(&dpcm->lock, flags); |
b142037b TI |
312 | dummy_systimer_update(dpcm); |
313 | dummy_systimer_rearm(dpcm); | |
b5d10781 TI |
314 | elapsed = dpcm->elapsed; |
315 | dpcm->elapsed = 0; | |
b142037b | 316 | spin_unlock_irqrestore(&dpcm->lock, flags); |
b5d10781 TI |
317 | if (elapsed) |
318 | snd_pcm_period_elapsed(dpcm->substream); | |
1da177e4 LT |
319 | } |
320 | ||
c631d03c TI |
321 | static snd_pcm_uframes_t |
322 | dummy_systimer_pointer(struct snd_pcm_substream *substream) | |
1da177e4 | 323 | { |
b142037b | 324 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
b5d10781 | 325 | snd_pcm_uframes_t pos; |
1da177e4 | 326 | |
b142037b TI |
327 | spin_lock(&dpcm->lock); |
328 | dummy_systimer_update(dpcm); | |
b5d10781 | 329 | pos = dpcm->frac_pos / HZ; |
b142037b | 330 | spin_unlock(&dpcm->lock); |
b5d10781 | 331 | return pos; |
1da177e4 LT |
332 | } |
333 | ||
c631d03c | 334 | static int dummy_systimer_create(struct snd_pcm_substream *substream) |
1da177e4 | 335 | { |
c631d03c TI |
336 | struct dummy_systimer_pcm *dpcm; |
337 | ||
338 | dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); | |
339 | if (!dpcm) | |
340 | return -ENOMEM; | |
341 | substream->runtime->private_data = dpcm; | |
2a52b6ee RK |
342 | setup_timer(&dpcm->timer, dummy_systimer_callback, |
343 | (unsigned long) dpcm); | |
c631d03c TI |
344 | spin_lock_init(&dpcm->lock); |
345 | dpcm->substream = substream; | |
346 | return 0; | |
347 | } | |
348 | ||
349 | static void dummy_systimer_free(struct snd_pcm_substream *substream) | |
350 | { | |
351 | kfree(substream->runtime->private_data); | |
352 | } | |
353 | ||
354 | static struct dummy_timer_ops dummy_systimer_ops = { | |
355 | .create = dummy_systimer_create, | |
356 | .free = dummy_systimer_free, | |
357 | .prepare = dummy_systimer_prepare, | |
358 | .start = dummy_systimer_start, | |
359 | .stop = dummy_systimer_stop, | |
360 | .pointer = dummy_systimer_pointer, | |
1da177e4 LT |
361 | }; |
362 | ||
c631d03c TI |
363 | #ifdef CONFIG_HIGH_RES_TIMERS |
364 | /* | |
365 | * hrtimer interface | |
366 | */ | |
367 | ||
368 | struct dummy_hrtimer_pcm { | |
369 | ktime_t base_time; | |
370 | ktime_t period_time; | |
371 | atomic_t running; | |
372 | struct hrtimer timer; | |
373 | struct tasklet_struct tasklet; | |
374 | struct snd_pcm_substream *substream; | |
375 | }; | |
376 | ||
377 | static void dummy_hrtimer_pcm_elapsed(unsigned long priv) | |
378 | { | |
379 | struct dummy_hrtimer_pcm *dpcm = (struct dummy_hrtimer_pcm *)priv; | |
380 | if (atomic_read(&dpcm->running)) | |
381 | snd_pcm_period_elapsed(dpcm->substream); | |
382 | } | |
383 | ||
384 | static enum hrtimer_restart dummy_hrtimer_callback(struct hrtimer *timer) | |
385 | { | |
386 | struct dummy_hrtimer_pcm *dpcm; | |
387 | ||
388 | dpcm = container_of(timer, struct dummy_hrtimer_pcm, timer); | |
389 | if (!atomic_read(&dpcm->running)) | |
390 | return HRTIMER_NORESTART; | |
391 | tasklet_schedule(&dpcm->tasklet); | |
392 | hrtimer_forward_now(timer, dpcm->period_time); | |
393 | return HRTIMER_RESTART; | |
394 | } | |
395 | ||
396 | static int dummy_hrtimer_start(struct snd_pcm_substream *substream) | |
397 | { | |
398 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; | |
399 | ||
400 | dpcm->base_time = hrtimer_cb_get_time(&dpcm->timer); | |
401 | hrtimer_start(&dpcm->timer, dpcm->period_time, HRTIMER_MODE_REL); | |
402 | atomic_set(&dpcm->running, 1); | |
403 | return 0; | |
404 | } | |
405 | ||
406 | static int dummy_hrtimer_stop(struct snd_pcm_substream *substream) | |
407 | { | |
408 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; | |
409 | ||
410 | atomic_set(&dpcm->running, 0); | |
411 | hrtimer_cancel(&dpcm->timer); | |
412 | return 0; | |
413 | } | |
414 | ||
415 | static inline void dummy_hrtimer_sync(struct dummy_hrtimer_pcm *dpcm) | |
416 | { | |
417 | tasklet_kill(&dpcm->tasklet); | |
418 | } | |
419 | ||
420 | static snd_pcm_uframes_t | |
421 | dummy_hrtimer_pointer(struct snd_pcm_substream *substream) | |
422 | { | |
423 | struct snd_pcm_runtime *runtime = substream->runtime; | |
424 | struct dummy_hrtimer_pcm *dpcm = runtime->private_data; | |
425 | u64 delta; | |
426 | u32 pos; | |
427 | ||
428 | delta = ktime_us_delta(hrtimer_cb_get_time(&dpcm->timer), | |
429 | dpcm->base_time); | |
430 | delta = div_u64(delta * runtime->rate + 999999, 1000000); | |
431 | div_u64_rem(delta, runtime->buffer_size, &pos); | |
432 | return pos; | |
433 | } | |
434 | ||
435 | static int dummy_hrtimer_prepare(struct snd_pcm_substream *substream) | |
1da177e4 | 436 | { |
c631d03c TI |
437 | struct snd_pcm_runtime *runtime = substream->runtime; |
438 | struct dummy_hrtimer_pcm *dpcm = runtime->private_data; | |
439 | unsigned int period, rate; | |
440 | long sec; | |
441 | unsigned long nsecs; | |
442 | ||
443 | dummy_hrtimer_sync(dpcm); | |
444 | period = runtime->period_size; | |
445 | rate = runtime->rate; | |
446 | sec = period / rate; | |
447 | period %= rate; | |
448 | nsecs = div_u64((u64)period * 1000000000UL + rate - 1, rate); | |
449 | dpcm->period_time = ktime_set(sec, nsecs); | |
450 | ||
451 | return 0; | |
452 | } | |
453 | ||
454 | static int dummy_hrtimer_create(struct snd_pcm_substream *substream) | |
455 | { | |
456 | struct dummy_hrtimer_pcm *dpcm; | |
457 | ||
458 | dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); | |
459 | if (!dpcm) | |
460 | return -ENOMEM; | |
461 | substream->runtime->private_data = dpcm; | |
462 | hrtimer_init(&dpcm->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); | |
463 | dpcm->timer.function = dummy_hrtimer_callback; | |
464 | dpcm->substream = substream; | |
465 | atomic_set(&dpcm->running, 0); | |
466 | tasklet_init(&dpcm->tasklet, dummy_hrtimer_pcm_elapsed, | |
467 | (unsigned long)dpcm); | |
468 | return 0; | |
469 | } | |
470 | ||
471 | static void dummy_hrtimer_free(struct snd_pcm_substream *substream) | |
472 | { | |
473 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; | |
474 | dummy_hrtimer_sync(dpcm); | |
475 | kfree(dpcm); | |
476 | } | |
477 | ||
478 | static struct dummy_timer_ops dummy_hrtimer_ops = { | |
479 | .create = dummy_hrtimer_create, | |
480 | .free = dummy_hrtimer_free, | |
481 | .prepare = dummy_hrtimer_prepare, | |
482 | .start = dummy_hrtimer_start, | |
483 | .stop = dummy_hrtimer_stop, | |
484 | .pointer = dummy_hrtimer_pointer, | |
485 | }; | |
486 | ||
487 | #endif /* CONFIG_HIGH_RES_TIMERS */ | |
488 | ||
489 | /* | |
490 | * PCM interface | |
491 | */ | |
492 | ||
493 | static int dummy_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
494 | { | |
495 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); | |
496 | ||
497 | switch (cmd) { | |
498 | case SNDRV_PCM_TRIGGER_START: | |
499 | case SNDRV_PCM_TRIGGER_RESUME: | |
500 | return dummy->timer_ops->start(substream); | |
501 | case SNDRV_PCM_TRIGGER_STOP: | |
502 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
503 | return dummy->timer_ops->stop(substream); | |
504 | } | |
505 | return -EINVAL; | |
506 | } | |
507 | ||
508 | static int dummy_pcm_prepare(struct snd_pcm_substream *substream) | |
509 | { | |
c631d03c TI |
510 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); |
511 | ||
c631d03c TI |
512 | return dummy->timer_ops->prepare(substream); |
513 | } | |
514 | ||
515 | static snd_pcm_uframes_t dummy_pcm_pointer(struct snd_pcm_substream *substream) | |
516 | { | |
517 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); | |
518 | ||
519 | return dummy->timer_ops->pointer(substream); | |
520 | } | |
521 | ||
522 | static struct snd_pcm_hardware dummy_pcm_hardware = { | |
523 | .info = (SNDRV_PCM_INFO_MMAP | | |
524 | SNDRV_PCM_INFO_INTERLEAVED | | |
525 | SNDRV_PCM_INFO_RESUME | | |
526 | SNDRV_PCM_INFO_MMAP_VALID), | |
1da177e4 LT |
527 | .formats = USE_FORMATS, |
528 | .rates = USE_RATE, | |
529 | .rate_min = USE_RATE_MIN, | |
530 | .rate_max = USE_RATE_MAX, | |
531 | .channels_min = USE_CHANNELS_MIN, | |
532 | .channels_max = USE_CHANNELS_MAX, | |
533 | .buffer_bytes_max = MAX_BUFFER_SIZE, | |
d5e1ca05 | 534 | .period_bytes_min = MIN_PERIOD_SIZE, |
2ad5dd8d | 535 | .period_bytes_max = MAX_PERIOD_SIZE, |
1da177e4 LT |
536 | .periods_min = USE_PERIODS_MIN, |
537 | .periods_max = USE_PERIODS_MAX, | |
538 | .fifo_size = 0, | |
539 | }; | |
540 | ||
c631d03c TI |
541 | static int dummy_pcm_hw_params(struct snd_pcm_substream *substream, |
542 | struct snd_pcm_hw_params *hw_params) | |
1da177e4 | 543 | { |
a68c4d11 TI |
544 | if (fake_buffer) { |
545 | /* runtime->dma_bytes has to be set manually to allow mmap */ | |
546 | substream->runtime->dma_bytes = params_buffer_bytes(hw_params); | |
547 | return 0; | |
548 | } | |
c631d03c TI |
549 | return snd_pcm_lib_malloc_pages(substream, |
550 | params_buffer_bytes(hw_params)); | |
1da177e4 LT |
551 | } |
552 | ||
c631d03c | 553 | static int dummy_pcm_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 554 | { |
a68c4d11 TI |
555 | if (fake_buffer) |
556 | return 0; | |
1da177e4 LT |
557 | return snd_pcm_lib_free_pages(substream); |
558 | } | |
559 | ||
c631d03c | 560 | static int dummy_pcm_open(struct snd_pcm_substream *substream) |
c8eb6ba1 | 561 | { |
c631d03c | 562 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); |
d5e1ca05 | 563 | struct dummy_model *model = dummy->model; |
4a4d2cfd | 564 | struct snd_pcm_runtime *runtime = substream->runtime; |
c8eb6ba1 TI |
565 | int err; |
566 | ||
c631d03c TI |
567 | dummy->timer_ops = &dummy_systimer_ops; |
568 | #ifdef CONFIG_HIGH_RES_TIMERS | |
569 | if (hrtimer) | |
570 | dummy->timer_ops = &dummy_hrtimer_ops; | |
571 | #endif | |
572 | ||
573 | err = dummy->timer_ops->create(substream); | |
1a11cb64 | 574 | if (err < 0) |
1da177e4 | 575 | return err; |
1da177e4 | 576 | |
d5e1ca05 | 577 | runtime->hw = dummy->pcm_hw; |
c631d03c | 578 | if (substream->pcm->device & 1) { |
1da177e4 LT |
579 | runtime->hw.info &= ~SNDRV_PCM_INFO_INTERLEAVED; |
580 | runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED; | |
581 | } | |
582 | if (substream->pcm->device & 2) | |
c631d03c TI |
583 | runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP | |
584 | SNDRV_PCM_INFO_MMAP_VALID); | |
585 | ||
d5e1ca05 JK |
586 | if (model == NULL) |
587 | return 0; | |
588 | ||
589 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
590 | if (model->playback_constraints) | |
591 | err = model->playback_constraints(substream->runtime); | |
592 | } else { | |
593 | if (model->capture_constraints) | |
594 | err = model->capture_constraints(substream->runtime); | |
595 | } | |
c631d03c TI |
596 | if (err < 0) { |
597 | dummy->timer_ops->free(substream); | |
1da177e4 | 598 | return err; |
c631d03c | 599 | } |
1da177e4 LT |
600 | return 0; |
601 | } | |
602 | ||
c631d03c | 603 | static int dummy_pcm_close(struct snd_pcm_substream *substream) |
1da177e4 | 604 | { |
c631d03c TI |
605 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); |
606 | dummy->timer_ops->free(substream); | |
1da177e4 LT |
607 | return 0; |
608 | } | |
609 | ||
a68c4d11 TI |
610 | /* |
611 | * dummy buffer handling | |
612 | */ | |
613 | ||
614 | static void *dummy_page[2]; | |
615 | ||
616 | static void free_fake_buffer(void) | |
617 | { | |
618 | if (fake_buffer) { | |
619 | int i; | |
620 | for (i = 0; i < 2; i++) | |
621 | if (dummy_page[i]) { | |
622 | free_page((unsigned long)dummy_page[i]); | |
623 | dummy_page[i] = NULL; | |
624 | } | |
625 | } | |
626 | } | |
627 | ||
628 | static int alloc_fake_buffer(void) | |
629 | { | |
630 | int i; | |
631 | ||
632 | if (!fake_buffer) | |
633 | return 0; | |
634 | for (i = 0; i < 2; i++) { | |
635 | dummy_page[i] = (void *)get_zeroed_page(GFP_KERNEL); | |
636 | if (!dummy_page[i]) { | |
637 | free_fake_buffer(); | |
638 | return -ENOMEM; | |
639 | } | |
640 | } | |
641 | return 0; | |
642 | } | |
643 | ||
644 | static int dummy_pcm_copy(struct snd_pcm_substream *substream, | |
645 | int channel, snd_pcm_uframes_t pos, | |
646 | void __user *dst, snd_pcm_uframes_t count) | |
647 | { | |
648 | return 0; /* do nothing */ | |
649 | } | |
650 | ||
651 | static int dummy_pcm_silence(struct snd_pcm_substream *substream, | |
652 | int channel, snd_pcm_uframes_t pos, | |
653 | snd_pcm_uframes_t count) | |
654 | { | |
655 | return 0; /* do nothing */ | |
656 | } | |
657 | ||
658 | static struct page *dummy_pcm_page(struct snd_pcm_substream *substream, | |
659 | unsigned long offset) | |
660 | { | |
661 | return virt_to_page(dummy_page[substream->stream]); /* the same page */ | |
662 | } | |
663 | ||
c631d03c TI |
664 | static struct snd_pcm_ops dummy_pcm_ops = { |
665 | .open = dummy_pcm_open, | |
666 | .close = dummy_pcm_close, | |
667 | .ioctl = snd_pcm_lib_ioctl, | |
668 | .hw_params = dummy_pcm_hw_params, | |
669 | .hw_free = dummy_pcm_hw_free, | |
670 | .prepare = dummy_pcm_prepare, | |
671 | .trigger = dummy_pcm_trigger, | |
672 | .pointer = dummy_pcm_pointer, | |
1da177e4 LT |
673 | }; |
674 | ||
a68c4d11 TI |
675 | static struct snd_pcm_ops dummy_pcm_ops_no_buf = { |
676 | .open = dummy_pcm_open, | |
677 | .close = dummy_pcm_close, | |
678 | .ioctl = snd_pcm_lib_ioctl, | |
679 | .hw_params = dummy_pcm_hw_params, | |
680 | .hw_free = dummy_pcm_hw_free, | |
681 | .prepare = dummy_pcm_prepare, | |
682 | .trigger = dummy_pcm_trigger, | |
683 | .pointer = dummy_pcm_pointer, | |
684 | .copy = dummy_pcm_copy, | |
685 | .silence = dummy_pcm_silence, | |
686 | .page = dummy_pcm_page, | |
687 | }; | |
688 | ||
fbbb01a1 BP |
689 | static int snd_card_dummy_pcm(struct snd_dummy *dummy, int device, |
690 | int substreams) | |
1da177e4 | 691 | { |
4a4d2cfd | 692 | struct snd_pcm *pcm; |
a68c4d11 | 693 | struct snd_pcm_ops *ops; |
1da177e4 LT |
694 | int err; |
695 | ||
1a11cb64 JK |
696 | err = snd_pcm_new(dummy->card, "Dummy PCM", device, |
697 | substreams, substreams, &pcm); | |
698 | if (err < 0) | |
1da177e4 | 699 | return err; |
6e65c1cc | 700 | dummy->pcm = pcm; |
a68c4d11 TI |
701 | if (fake_buffer) |
702 | ops = &dummy_pcm_ops_no_buf; | |
703 | else | |
704 | ops = &dummy_pcm_ops; | |
705 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, ops); | |
706 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, ops); | |
1da177e4 LT |
707 | pcm->private_data = dummy; |
708 | pcm->info_flags = 0; | |
709 | strcpy(pcm->name, "Dummy PCM"); | |
a68c4d11 TI |
710 | if (!fake_buffer) { |
711 | snd_pcm_lib_preallocate_pages_for_all(pcm, | |
712 | SNDRV_DMA_TYPE_CONTINUOUS, | |
713 | snd_dma_continuous_data(GFP_KERNEL), | |
714 | 0, 64*1024); | |
715 | } | |
1da177e4 LT |
716 | return 0; |
717 | } | |
718 | ||
9b151fec TI |
719 | /* |
720 | * mixer interface | |
721 | */ | |
722 | ||
1da177e4 | 723 | #define DUMMY_VOLUME(xname, xindex, addr) \ |
fb567a8e TI |
724 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ |
725 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \ | |
726 | .name = xname, .index = xindex, \ | |
1da177e4 LT |
727 | .info = snd_dummy_volume_info, \ |
728 | .get = snd_dummy_volume_get, .put = snd_dummy_volume_put, \ | |
fb567a8e TI |
729 | .private_value = addr, \ |
730 | .tlv = { .p = db_scale_dummy } } | |
1da177e4 | 731 | |
4a4d2cfd TI |
732 | static int snd_dummy_volume_info(struct snd_kcontrol *kcontrol, |
733 | struct snd_ctl_elem_info *uinfo) | |
1da177e4 LT |
734 | { |
735 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
736 | uinfo->count = 2; | |
737 | uinfo->value.integer.min = -50; | |
738 | uinfo->value.integer.max = 100; | |
739 | return 0; | |
740 | } | |
741 | ||
4a4d2cfd TI |
742 | static int snd_dummy_volume_get(struct snd_kcontrol *kcontrol, |
743 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 744 | { |
4a4d2cfd | 745 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
746 | int addr = kcontrol->private_value; |
747 | ||
c8eb6ba1 | 748 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
749 | ucontrol->value.integer.value[0] = dummy->mixer_volume[addr][0]; |
750 | ucontrol->value.integer.value[1] = dummy->mixer_volume[addr][1]; | |
c8eb6ba1 | 751 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
752 | return 0; |
753 | } | |
754 | ||
4a4d2cfd TI |
755 | static int snd_dummy_volume_put(struct snd_kcontrol *kcontrol, |
756 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 757 | { |
4a4d2cfd | 758 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
759 | int change, addr = kcontrol->private_value; |
760 | int left, right; | |
761 | ||
762 | left = ucontrol->value.integer.value[0]; | |
763 | if (left < -50) | |
764 | left = -50; | |
765 | if (left > 100) | |
766 | left = 100; | |
767 | right = ucontrol->value.integer.value[1]; | |
768 | if (right < -50) | |
769 | right = -50; | |
770 | if (right > 100) | |
771 | right = 100; | |
c8eb6ba1 | 772 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
773 | change = dummy->mixer_volume[addr][0] != left || |
774 | dummy->mixer_volume[addr][1] != right; | |
775 | dummy->mixer_volume[addr][0] = left; | |
776 | dummy->mixer_volume[addr][1] = right; | |
c8eb6ba1 | 777 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
778 | return change; |
779 | } | |
780 | ||
0cb29ea0 | 781 | static const DECLARE_TLV_DB_SCALE(db_scale_dummy, -4500, 30, 0); |
fb567a8e | 782 | |
1da177e4 LT |
783 | #define DUMMY_CAPSRC(xname, xindex, addr) \ |
784 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ | |
785 | .info = snd_dummy_capsrc_info, \ | |
786 | .get = snd_dummy_capsrc_get, .put = snd_dummy_capsrc_put, \ | |
787 | .private_value = addr } | |
788 | ||
a5ce8890 | 789 | #define snd_dummy_capsrc_info snd_ctl_boolean_stereo_info |
1da177e4 | 790 | |
4a4d2cfd TI |
791 | static int snd_dummy_capsrc_get(struct snd_kcontrol *kcontrol, |
792 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 793 | { |
4a4d2cfd | 794 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
795 | int addr = kcontrol->private_value; |
796 | ||
c8eb6ba1 | 797 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
798 | ucontrol->value.integer.value[0] = dummy->capture_source[addr][0]; |
799 | ucontrol->value.integer.value[1] = dummy->capture_source[addr][1]; | |
c8eb6ba1 | 800 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
801 | return 0; |
802 | } | |
803 | ||
4a4d2cfd | 804 | static int snd_dummy_capsrc_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1da177e4 | 805 | { |
4a4d2cfd | 806 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
807 | int change, addr = kcontrol->private_value; |
808 | int left, right; | |
809 | ||
810 | left = ucontrol->value.integer.value[0] & 1; | |
811 | right = ucontrol->value.integer.value[1] & 1; | |
c8eb6ba1 | 812 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
813 | change = dummy->capture_source[addr][0] != left && |
814 | dummy->capture_source[addr][1] != right; | |
815 | dummy->capture_source[addr][0] = left; | |
816 | dummy->capture_source[addr][1] = right; | |
c8eb6ba1 | 817 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
818 | return change; |
819 | } | |
820 | ||
16e43467 CL |
821 | static int snd_dummy_iobox_info(struct snd_kcontrol *kcontrol, |
822 | struct snd_ctl_elem_info *info) | |
823 | { | |
824 | const char *const names[] = { "None", "CD Player" }; | |
825 | ||
826 | return snd_ctl_enum_info(info, 1, 2, names); | |
827 | } | |
828 | ||
829 | static int snd_dummy_iobox_get(struct snd_kcontrol *kcontrol, | |
830 | struct snd_ctl_elem_value *value) | |
831 | { | |
832 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); | |
833 | ||
834 | value->value.enumerated.item[0] = dummy->iobox; | |
835 | return 0; | |
836 | } | |
837 | ||
838 | static int snd_dummy_iobox_put(struct snd_kcontrol *kcontrol, | |
839 | struct snd_ctl_elem_value *value) | |
840 | { | |
841 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); | |
842 | int changed; | |
843 | ||
844 | if (value->value.enumerated.item[0] > 1) | |
845 | return -EINVAL; | |
846 | ||
847 | changed = value->value.enumerated.item[0] != dummy->iobox; | |
848 | if (changed) { | |
849 | dummy->iobox = value->value.enumerated.item[0]; | |
850 | ||
851 | if (dummy->iobox) { | |
852 | dummy->cd_volume_ctl->vd[0].access &= | |
853 | ~SNDRV_CTL_ELEM_ACCESS_INACTIVE; | |
854 | dummy->cd_switch_ctl->vd[0].access &= | |
855 | ~SNDRV_CTL_ELEM_ACCESS_INACTIVE; | |
856 | } else { | |
857 | dummy->cd_volume_ctl->vd[0].access |= | |
858 | SNDRV_CTL_ELEM_ACCESS_INACTIVE; | |
859 | dummy->cd_switch_ctl->vd[0].access |= | |
860 | SNDRV_CTL_ELEM_ACCESS_INACTIVE; | |
861 | } | |
862 | ||
863 | snd_ctl_notify(dummy->card, SNDRV_CTL_EVENT_MASK_INFO, | |
864 | &dummy->cd_volume_ctl->id); | |
865 | snd_ctl_notify(dummy->card, SNDRV_CTL_EVENT_MASK_INFO, | |
866 | &dummy->cd_switch_ctl->id); | |
867 | } | |
868 | ||
869 | return changed; | |
870 | } | |
871 | ||
4a4d2cfd | 872 | static struct snd_kcontrol_new snd_dummy_controls[] = { |
1da177e4 LT |
873 | DUMMY_VOLUME("Master Volume", 0, MIXER_ADDR_MASTER), |
874 | DUMMY_CAPSRC("Master Capture Switch", 0, MIXER_ADDR_MASTER), | |
875 | DUMMY_VOLUME("Synth Volume", 0, MIXER_ADDR_SYNTH), | |
e05d6964 | 876 | DUMMY_CAPSRC("Synth Capture Switch", 0, MIXER_ADDR_SYNTH), |
1da177e4 | 877 | DUMMY_VOLUME("Line Volume", 0, MIXER_ADDR_LINE), |
e05d6964 | 878 | DUMMY_CAPSRC("Line Capture Switch", 0, MIXER_ADDR_LINE), |
1da177e4 | 879 | DUMMY_VOLUME("Mic Volume", 0, MIXER_ADDR_MIC), |
e05d6964 | 880 | DUMMY_CAPSRC("Mic Capture Switch", 0, MIXER_ADDR_MIC), |
1da177e4 | 881 | DUMMY_VOLUME("CD Volume", 0, MIXER_ADDR_CD), |
16e43467 CL |
882 | DUMMY_CAPSRC("CD Capture Switch", 0, MIXER_ADDR_CD), |
883 | { | |
884 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
885 | .name = "External I/O Box", | |
886 | .info = snd_dummy_iobox_info, | |
887 | .get = snd_dummy_iobox_get, | |
888 | .put = snd_dummy_iobox_put, | |
889 | }, | |
1da177e4 LT |
890 | }; |
891 | ||
fbbb01a1 | 892 | static int snd_card_dummy_new_mixer(struct snd_dummy *dummy) |
1da177e4 | 893 | { |
4a4d2cfd | 894 | struct snd_card *card = dummy->card; |
16e43467 | 895 | struct snd_kcontrol *kcontrol; |
1da177e4 LT |
896 | unsigned int idx; |
897 | int err; | |
898 | ||
1da177e4 LT |
899 | spin_lock_init(&dummy->mixer_lock); |
900 | strcpy(card->mixername, "Dummy Mixer"); | |
16e43467 | 901 | dummy->iobox = 1; |
1da177e4 LT |
902 | |
903 | for (idx = 0; idx < ARRAY_SIZE(snd_dummy_controls); idx++) { | |
16e43467 CL |
904 | kcontrol = snd_ctl_new1(&snd_dummy_controls[idx], dummy); |
905 | err = snd_ctl_add(card, kcontrol); | |
1a11cb64 | 906 | if (err < 0) |
1da177e4 | 907 | return err; |
16e43467 CL |
908 | if (!strcmp(kcontrol->id.name, "CD Volume")) |
909 | dummy->cd_volume_ctl = kcontrol; | |
910 | else if (!strcmp(kcontrol->id.name, "CD Capture Switch")) | |
911 | dummy->cd_switch_ctl = kcontrol; | |
912 | ||
1da177e4 LT |
913 | } |
914 | return 0; | |
915 | } | |
916 | ||
9b151fec TI |
917 | #if defined(CONFIG_SND_DEBUG) && defined(CONFIG_PROC_FS) |
918 | /* | |
919 | * proc interface | |
920 | */ | |
d5e1ca05 JK |
921 | static void print_formats(struct snd_dummy *dummy, |
922 | struct snd_info_buffer *buffer) | |
9b151fec TI |
923 | { |
924 | int i; | |
925 | ||
926 | for (i = 0; i < SNDRV_PCM_FORMAT_LAST; i++) { | |
d5e1ca05 | 927 | if (dummy->pcm_hw.formats & (1ULL << i)) |
9b151fec TI |
928 | snd_iprintf(buffer, " %s", snd_pcm_format_name(i)); |
929 | } | |
930 | } | |
931 | ||
d5e1ca05 JK |
932 | static void print_rates(struct snd_dummy *dummy, |
933 | struct snd_info_buffer *buffer) | |
9b151fec TI |
934 | { |
935 | static int rates[] = { | |
936 | 5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000, | |
937 | 64000, 88200, 96000, 176400, 192000, | |
938 | }; | |
939 | int i; | |
940 | ||
d5e1ca05 | 941 | if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_CONTINUOUS) |
9b151fec | 942 | snd_iprintf(buffer, " continuous"); |
d5e1ca05 | 943 | if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_KNOT) |
9b151fec TI |
944 | snd_iprintf(buffer, " knot"); |
945 | for (i = 0; i < ARRAY_SIZE(rates); i++) | |
d5e1ca05 | 946 | if (dummy->pcm_hw.rates & (1 << i)) |
9b151fec TI |
947 | snd_iprintf(buffer, " %d", rates[i]); |
948 | } | |
949 | ||
d5e1ca05 JK |
950 | #define get_dummy_int_ptr(dummy, ofs) \ |
951 | (unsigned int *)((char *)&((dummy)->pcm_hw) + (ofs)) | |
952 | #define get_dummy_ll_ptr(dummy, ofs) \ | |
953 | (unsigned long long *)((char *)&((dummy)->pcm_hw) + (ofs)) | |
9b151fec TI |
954 | |
955 | struct dummy_hw_field { | |
956 | const char *name; | |
957 | const char *format; | |
958 | unsigned int offset; | |
959 | unsigned int size; | |
960 | }; | |
961 | #define FIELD_ENTRY(item, fmt) { \ | |
962 | .name = #item, \ | |
963 | .format = fmt, \ | |
964 | .offset = offsetof(struct snd_pcm_hardware, item), \ | |
965 | .size = sizeof(dummy_pcm_hardware.item) } | |
966 | ||
967 | static struct dummy_hw_field fields[] = { | |
968 | FIELD_ENTRY(formats, "%#llx"), | |
969 | FIELD_ENTRY(rates, "%#x"), | |
970 | FIELD_ENTRY(rate_min, "%d"), | |
971 | FIELD_ENTRY(rate_max, "%d"), | |
972 | FIELD_ENTRY(channels_min, "%d"), | |
973 | FIELD_ENTRY(channels_max, "%d"), | |
974 | FIELD_ENTRY(buffer_bytes_max, "%ld"), | |
975 | FIELD_ENTRY(period_bytes_min, "%ld"), | |
976 | FIELD_ENTRY(period_bytes_max, "%ld"), | |
977 | FIELD_ENTRY(periods_min, "%d"), | |
978 | FIELD_ENTRY(periods_max, "%d"), | |
979 | }; | |
980 | ||
981 | static void dummy_proc_read(struct snd_info_entry *entry, | |
982 | struct snd_info_buffer *buffer) | |
983 | { | |
d5e1ca05 | 984 | struct snd_dummy *dummy = entry->private_data; |
9b151fec TI |
985 | int i; |
986 | ||
987 | for (i = 0; i < ARRAY_SIZE(fields); i++) { | |
988 | snd_iprintf(buffer, "%s ", fields[i].name); | |
989 | if (fields[i].size == sizeof(int)) | |
990 | snd_iprintf(buffer, fields[i].format, | |
d5e1ca05 | 991 | *get_dummy_int_ptr(dummy, fields[i].offset)); |
9b151fec TI |
992 | else |
993 | snd_iprintf(buffer, fields[i].format, | |
d5e1ca05 | 994 | *get_dummy_ll_ptr(dummy, fields[i].offset)); |
9b151fec | 995 | if (!strcmp(fields[i].name, "formats")) |
d5e1ca05 | 996 | print_formats(dummy, buffer); |
9b151fec | 997 | else if (!strcmp(fields[i].name, "rates")) |
d5e1ca05 | 998 | print_rates(dummy, buffer); |
9b151fec TI |
999 | snd_iprintf(buffer, "\n"); |
1000 | } | |
1001 | } | |
1002 | ||
1003 | static void dummy_proc_write(struct snd_info_entry *entry, | |
1004 | struct snd_info_buffer *buffer) | |
1005 | { | |
d5e1ca05 | 1006 | struct snd_dummy *dummy = entry->private_data; |
9b151fec TI |
1007 | char line[64]; |
1008 | ||
1009 | while (!snd_info_get_line(buffer, line, sizeof(line))) { | |
1010 | char item[20]; | |
1011 | const char *ptr; | |
1012 | unsigned long long val; | |
1013 | int i; | |
1014 | ||
1015 | ptr = snd_info_get_str(item, line, sizeof(item)); | |
1016 | for (i = 0; i < ARRAY_SIZE(fields); i++) { | |
1017 | if (!strcmp(item, fields[i].name)) | |
1018 | break; | |
1019 | } | |
1020 | if (i >= ARRAY_SIZE(fields)) | |
1021 | continue; | |
1022 | snd_info_get_str(item, ptr, sizeof(item)); | |
b785a492 | 1023 | if (kstrtoull(item, 0, &val)) |
9b151fec TI |
1024 | continue; |
1025 | if (fields[i].size == sizeof(int)) | |
d5e1ca05 | 1026 | *get_dummy_int_ptr(dummy, fields[i].offset) = val; |
9b151fec | 1027 | else |
d5e1ca05 | 1028 | *get_dummy_ll_ptr(dummy, fields[i].offset) = val; |
9b151fec TI |
1029 | } |
1030 | } | |
1031 | ||
fbbb01a1 | 1032 | static void dummy_proc_init(struct snd_dummy *chip) |
9b151fec TI |
1033 | { |
1034 | struct snd_info_entry *entry; | |
1035 | ||
1036 | if (!snd_card_proc_new(chip->card, "dummy_pcm", &entry)) { | |
1037 | snd_info_set_text_ops(entry, chip, dummy_proc_read); | |
1038 | entry->c.text.write = dummy_proc_write; | |
1039 | entry->mode |= S_IWUSR; | |
d5e1ca05 | 1040 | entry->private_data = chip; |
9b151fec TI |
1041 | } |
1042 | } | |
1043 | #else | |
1044 | #define dummy_proc_init(x) | |
1045 | #endif /* CONFIG_SND_DEBUG && CONFIG_PROC_FS */ | |
1046 | ||
fbbb01a1 | 1047 | static int snd_dummy_probe(struct platform_device *devptr) |
1da177e4 | 1048 | { |
4a4d2cfd TI |
1049 | struct snd_card *card; |
1050 | struct snd_dummy *dummy; | |
d5e1ca05 | 1051 | struct dummy_model *m = NULL, **mdl; |
1da177e4 | 1052 | int idx, err; |
6e65c1cc | 1053 | int dev = devptr->id; |
1da177e4 | 1054 | |
5872f3f6 TI |
1055 | err = snd_card_new(&devptr->dev, index[dev], id[dev], THIS_MODULE, |
1056 | sizeof(struct snd_dummy), &card); | |
bd7dd77c TI |
1057 | if (err < 0) |
1058 | return err; | |
4a4d2cfd | 1059 | dummy = card->private_data; |
1da177e4 | 1060 | dummy->card = card; |
d5e1ca05 JK |
1061 | for (mdl = dummy_models; *mdl && model[dev]; mdl++) { |
1062 | if (strcmp(model[dev], (*mdl)->name) == 0) { | |
1063 | printk(KERN_INFO | |
1064 | "snd-dummy: Using model '%s' for card %i\n", | |
1065 | (*mdl)->name, card->number); | |
1066 | m = dummy->model = *mdl; | |
1067 | break; | |
1068 | } | |
1069 | } | |
1da177e4 LT |
1070 | for (idx = 0; idx < MAX_PCM_DEVICES && idx < pcm_devs[dev]; idx++) { |
1071 | if (pcm_substreams[dev] < 1) | |
1072 | pcm_substreams[dev] = 1; | |
1073 | if (pcm_substreams[dev] > MAX_PCM_SUBSTREAMS) | |
1074 | pcm_substreams[dev] = MAX_PCM_SUBSTREAMS; | |
1a11cb64 JK |
1075 | err = snd_card_dummy_pcm(dummy, idx, pcm_substreams[dev]); |
1076 | if (err < 0) | |
1da177e4 LT |
1077 | goto __nodev; |
1078 | } | |
d5e1ca05 JK |
1079 | |
1080 | dummy->pcm_hw = dummy_pcm_hardware; | |
1081 | if (m) { | |
1082 | if (m->formats) | |
1083 | dummy->pcm_hw.formats = m->formats; | |
1084 | if (m->buffer_bytes_max) | |
1085 | dummy->pcm_hw.buffer_bytes_max = m->buffer_bytes_max; | |
1086 | if (m->period_bytes_min) | |
1087 | dummy->pcm_hw.period_bytes_min = m->period_bytes_min; | |
1088 | if (m->period_bytes_max) | |
1089 | dummy->pcm_hw.period_bytes_max = m->period_bytes_max; | |
1090 | if (m->periods_min) | |
1091 | dummy->pcm_hw.periods_min = m->periods_min; | |
1092 | if (m->periods_max) | |
1093 | dummy->pcm_hw.periods_max = m->periods_max; | |
1094 | if (m->rates) | |
1095 | dummy->pcm_hw.rates = m->rates; | |
1096 | if (m->rate_min) | |
1097 | dummy->pcm_hw.rate_min = m->rate_min; | |
1098 | if (m->rate_max) | |
1099 | dummy->pcm_hw.rate_max = m->rate_max; | |
1100 | if (m->channels_min) | |
1101 | dummy->pcm_hw.channels_min = m->channels_min; | |
1102 | if (m->channels_max) | |
1103 | dummy->pcm_hw.channels_max = m->channels_max; | |
1104 | } | |
1105 | ||
1a11cb64 JK |
1106 | err = snd_card_dummy_new_mixer(dummy); |
1107 | if (err < 0) | |
1da177e4 LT |
1108 | goto __nodev; |
1109 | strcpy(card->driver, "Dummy"); | |
1110 | strcpy(card->shortname, "Dummy"); | |
1111 | sprintf(card->longname, "Dummy %i", dev + 1); | |
16dab54b | 1112 | |
9b151fec TI |
1113 | dummy_proc_init(dummy); |
1114 | ||
1a11cb64 JK |
1115 | err = snd_card_register(card); |
1116 | if (err == 0) { | |
6e65c1cc | 1117 | platform_set_drvdata(devptr, card); |
1da177e4 LT |
1118 | return 0; |
1119 | } | |
1120 | __nodev: | |
1121 | snd_card_free(card); | |
1122 | return err; | |
1123 | } | |
1124 | ||
fbbb01a1 | 1125 | static int snd_dummy_remove(struct platform_device *devptr) |
6e65c1cc TI |
1126 | { |
1127 | snd_card_free(platform_get_drvdata(devptr)); | |
6e65c1cc TI |
1128 | return 0; |
1129 | } | |
1130 | ||
d34e4e00 | 1131 | #ifdef CONFIG_PM_SLEEP |
284e7ca7 | 1132 | static int snd_dummy_suspend(struct device *pdev) |
1da177e4 | 1133 | { |
284e7ca7 | 1134 | struct snd_card *card = dev_get_drvdata(pdev); |
6e65c1cc | 1135 | struct snd_dummy *dummy = card->private_data; |
1da177e4 | 1136 | |
6e65c1cc TI |
1137 | snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
1138 | snd_pcm_suspend_all(dummy->pcm); | |
1139 | return 0; | |
1140 | } | |
1141 | ||
284e7ca7 | 1142 | static int snd_dummy_resume(struct device *pdev) |
6e65c1cc | 1143 | { |
284e7ca7 | 1144 | struct snd_card *card = dev_get_drvdata(pdev); |
6e65c1cc TI |
1145 | |
1146 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); | |
1147 | return 0; | |
1148 | } | |
284e7ca7 TI |
1149 | |
1150 | static SIMPLE_DEV_PM_OPS(snd_dummy_pm, snd_dummy_suspend, snd_dummy_resume); | |
1151 | #define SND_DUMMY_PM_OPS &snd_dummy_pm | |
1152 | #else | |
1153 | #define SND_DUMMY_PM_OPS NULL | |
6e65c1cc TI |
1154 | #endif |
1155 | ||
1156 | #define SND_DUMMY_DRIVER "snd_dummy" | |
1157 | ||
1158 | static struct platform_driver snd_dummy_driver = { | |
1159 | .probe = snd_dummy_probe, | |
fbbb01a1 | 1160 | .remove = snd_dummy_remove, |
6e65c1cc | 1161 | .driver = { |
8bf01d8a | 1162 | .name = SND_DUMMY_DRIVER, |
284e7ca7 | 1163 | .pm = SND_DUMMY_PM_OPS, |
6e65c1cc TI |
1164 | }, |
1165 | }; | |
1166 | ||
c12aad6e | 1167 | static void snd_dummy_unregister_all(void) |
f7a9275d CL |
1168 | { |
1169 | int i; | |
1170 | ||
1171 | for (i = 0; i < ARRAY_SIZE(devices); ++i) | |
1172 | platform_device_unregister(devices[i]); | |
1173 | platform_driver_unregister(&snd_dummy_driver); | |
a68c4d11 | 1174 | free_fake_buffer(); |
f7a9275d CL |
1175 | } |
1176 | ||
6e65c1cc TI |
1177 | static int __init alsa_card_dummy_init(void) |
1178 | { | |
1179 | int i, cards, err; | |
1180 | ||
1a11cb64 JK |
1181 | err = platform_driver_register(&snd_dummy_driver); |
1182 | if (err < 0) | |
6e65c1cc TI |
1183 | return err; |
1184 | ||
a68c4d11 TI |
1185 | err = alloc_fake_buffer(); |
1186 | if (err < 0) { | |
1187 | platform_driver_unregister(&snd_dummy_driver); | |
1188 | return err; | |
1189 | } | |
1190 | ||
6e65c1cc | 1191 | cards = 0; |
8278ca8f | 1192 | for (i = 0; i < SNDRV_CARDS; i++) { |
6e65c1cc | 1193 | struct platform_device *device; |
8278ca8f TI |
1194 | if (! enable[i]) |
1195 | continue; | |
6e65c1cc TI |
1196 | device = platform_device_register_simple(SND_DUMMY_DRIVER, |
1197 | i, NULL, 0); | |
a182ee98 RH |
1198 | if (IS_ERR(device)) |
1199 | continue; | |
7152447d RH |
1200 | if (!platform_get_drvdata(device)) { |
1201 | platform_device_unregister(device); | |
1202 | continue; | |
1203 | } | |
f7a9275d | 1204 | devices[i] = device; |
1da177e4 LT |
1205 | cards++; |
1206 | } | |
1207 | if (!cards) { | |
1208 | #ifdef MODULE | |
1209 | printk(KERN_ERR "Dummy soundcard not found or device busy\n"); | |
1210 | #endif | |
a182ee98 RH |
1211 | snd_dummy_unregister_all(); |
1212 | return -ENODEV; | |
1da177e4 LT |
1213 | } |
1214 | return 0; | |
1215 | } | |
1216 | ||
1217 | static void __exit alsa_card_dummy_exit(void) | |
1218 | { | |
f7a9275d | 1219 | snd_dummy_unregister_all(); |
1da177e4 LT |
1220 | } |
1221 | ||
1222 | module_init(alsa_card_dummy_init) | |
1223 | module_exit(alsa_card_dummy_exit) |