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> | |
1da177e4 LT |
30 | #include <linux/moduleparam.h> |
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 | ||
48 | #if 0 /* emu10k1 emulation */ | |
49 | #define MAX_BUFFER_SIZE (128 * 1024) | |
4a4d2cfd | 50 | static int emu10k1_playback_constraints(struct snd_pcm_runtime *runtime) |
1da177e4 LT |
51 | { |
52 | int err; | |
1a11cb64 JK |
53 | err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); |
54 | if (err < 0) | |
1da177e4 | 55 | return err; |
1a11cb64 | 56 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 256, UINT_MAX); |
e78521f3 | 57 | if (err < 0) |
1da177e4 LT |
58 | return err; |
59 | return 0; | |
60 | } | |
61 | #define add_playback_constraints emu10k1_playback_constraints | |
62 | #endif | |
63 | ||
64 | #if 0 /* RME9652 emulation */ | |
65 | #define MAX_BUFFER_SIZE (26 * 64 * 1024) | |
66 | #define USE_FORMATS SNDRV_PCM_FMTBIT_S32_LE | |
67 | #define USE_CHANNELS_MIN 26 | |
68 | #define USE_CHANNELS_MAX 26 | |
69 | #define USE_PERIODS_MIN 2 | |
70 | #define USE_PERIODS_MAX 2 | |
71 | #endif | |
72 | ||
73 | #if 0 /* ICE1712 emulation */ | |
74 | #define MAX_BUFFER_SIZE (256 * 1024) | |
75 | #define USE_FORMATS SNDRV_PCM_FMTBIT_S32_LE | |
76 | #define USE_CHANNELS_MIN 10 | |
77 | #define USE_CHANNELS_MAX 10 | |
78 | #define USE_PERIODS_MIN 1 | |
79 | #define USE_PERIODS_MAX 1024 | |
80 | #endif | |
81 | ||
82 | #if 0 /* UDA1341 emulation */ | |
83 | #define MAX_BUFFER_SIZE (16380) | |
84 | #define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE | |
85 | #define USE_CHANNELS_MIN 2 | |
86 | #define USE_CHANNELS_MAX 2 | |
87 | #define USE_PERIODS_MIN 2 | |
88 | #define USE_PERIODS_MAX 255 | |
89 | #endif | |
90 | ||
91 | #if 0 /* simple AC97 bridge (intel8x0) with 48kHz AC97 only codec */ | |
92 | #define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE | |
93 | #define USE_CHANNELS_MIN 2 | |
94 | #define USE_CHANNELS_MAX 2 | |
95 | #define USE_RATE SNDRV_PCM_RATE_48000 | |
96 | #define USE_RATE_MIN 48000 | |
97 | #define USE_RATE_MAX 48000 | |
98 | #endif | |
99 | ||
2ad5dd8d JK |
100 | #if 0 /* CA0106 */ |
101 | #define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE | |
102 | #define USE_CHANNELS_MIN 2 | |
103 | #define USE_CHANNELS_MAX 2 | |
104 | #define USE_RATE (SNDRV_PCM_RATE_48000|SNDRV_PCM_RATE_96000|SNDRV_PCM_RATE_192000) | |
105 | #define USE_RATE_MIN 48000 | |
106 | #define USE_RATE_MAX 192000 | |
107 | #define MAX_BUFFER_SIZE ((65536-64)*8) | |
108 | #define MAX_PERIOD_SIZE (65536-64) | |
109 | #define USE_PERIODS_MIN 2 | |
110 | #define USE_PERIODS_MAX 8 | |
111 | #endif | |
112 | ||
1da177e4 LT |
113 | |
114 | /* defaults */ | |
115 | #ifndef MAX_BUFFER_SIZE | |
116 | #define MAX_BUFFER_SIZE (64*1024) | |
117 | #endif | |
2ad5dd8d JK |
118 | #ifndef MAX_PERIOD_SIZE |
119 | #define MAX_PERIOD_SIZE MAX_BUFFER_SIZE | |
120 | #endif | |
1da177e4 LT |
121 | #ifndef USE_FORMATS |
122 | #define USE_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE) | |
123 | #endif | |
124 | #ifndef USE_RATE | |
125 | #define USE_RATE SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000 | |
126 | #define USE_RATE_MIN 5500 | |
127 | #define USE_RATE_MAX 48000 | |
128 | #endif | |
129 | #ifndef USE_CHANNELS_MIN | |
130 | #define USE_CHANNELS_MIN 1 | |
131 | #endif | |
132 | #ifndef USE_CHANNELS_MAX | |
133 | #define USE_CHANNELS_MAX 2 | |
134 | #endif | |
135 | #ifndef USE_PERIODS_MIN | |
136 | #define USE_PERIODS_MIN 1 | |
137 | #endif | |
138 | #ifndef USE_PERIODS_MAX | |
139 | #define USE_PERIODS_MAX 1024 | |
140 | #endif | |
141 | #ifndef add_playback_constraints | |
142 | #define add_playback_constraints(x) 0 | |
143 | #endif | |
144 | #ifndef add_capture_constraints | |
145 | #define add_capture_constraints(x) 0 | |
146 | #endif | |
147 | ||
148 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ | |
149 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ | |
150 | static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0}; | |
151 | static int pcm_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1}; | |
152 | static int pcm_substreams[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 8}; | |
153 | //static int midi_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2}; | |
c631d03c TI |
154 | #ifdef CONFIG_HIGH_RES_TIMERS |
155 | static int hrtimer = 1; | |
156 | #endif | |
a68c4d11 | 157 | static int fake_buffer = 1; |
1da177e4 LT |
158 | |
159 | module_param_array(index, int, NULL, 0444); | |
160 | MODULE_PARM_DESC(index, "Index value for dummy soundcard."); | |
161 | module_param_array(id, charp, NULL, 0444); | |
162 | MODULE_PARM_DESC(id, "ID string for dummy soundcard."); | |
163 | module_param_array(enable, bool, NULL, 0444); | |
164 | MODULE_PARM_DESC(enable, "Enable this dummy soundcard."); | |
165 | module_param_array(pcm_devs, int, NULL, 0444); | |
166 | MODULE_PARM_DESC(pcm_devs, "PCM devices # (0-4) for dummy driver."); | |
167 | module_param_array(pcm_substreams, int, NULL, 0444); | |
23aebca4 | 168 | MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-128) for dummy driver."); |
1da177e4 LT |
169 | //module_param_array(midi_devs, int, NULL, 0444); |
170 | //MODULE_PARM_DESC(midi_devs, "MIDI devices # (0-2) for dummy driver."); | |
a68c4d11 TI |
171 | module_param(fake_buffer, bool, 0444); |
172 | MODULE_PARM_DESC(fake_buffer, "Fake buffer allocations."); | |
c631d03c TI |
173 | #ifdef CONFIG_HIGH_RES_TIMERS |
174 | module_param(hrtimer, bool, 0644); | |
175 | MODULE_PARM_DESC(hrtimer, "Use hrtimer as the timer source."); | |
176 | #endif | |
1da177e4 | 177 | |
f7a9275d CL |
178 | static struct platform_device *devices[SNDRV_CARDS]; |
179 | ||
1da177e4 LT |
180 | #define MIXER_ADDR_MASTER 0 |
181 | #define MIXER_ADDR_LINE 1 | |
182 | #define MIXER_ADDR_MIC 2 | |
183 | #define MIXER_ADDR_SYNTH 3 | |
184 | #define MIXER_ADDR_CD 4 | |
185 | #define MIXER_ADDR_LAST 4 | |
186 | ||
c631d03c TI |
187 | struct dummy_timer_ops { |
188 | int (*create)(struct snd_pcm_substream *); | |
189 | void (*free)(struct snd_pcm_substream *); | |
190 | int (*prepare)(struct snd_pcm_substream *); | |
191 | int (*start)(struct snd_pcm_substream *); | |
192 | int (*stop)(struct snd_pcm_substream *); | |
193 | snd_pcm_uframes_t (*pointer)(struct snd_pcm_substream *); | |
194 | }; | |
195 | ||
4a4d2cfd TI |
196 | struct snd_dummy { |
197 | struct snd_card *card; | |
6e65c1cc | 198 | struct snd_pcm *pcm; |
1da177e4 LT |
199 | spinlock_t mixer_lock; |
200 | int mixer_volume[MIXER_ADDR_LAST+1][2]; | |
201 | int capture_source[MIXER_ADDR_LAST+1][2]; | |
c631d03c | 202 | const struct dummy_timer_ops *timer_ops; |
4a4d2cfd | 203 | }; |
1da177e4 | 204 | |
c631d03c TI |
205 | /* |
206 | * system timer interface | |
207 | */ | |
208 | ||
209 | struct dummy_systimer_pcm { | |
1da177e4 LT |
210 | spinlock_t lock; |
211 | struct timer_list timer; | |
b142037b TI |
212 | unsigned long base_time; |
213 | unsigned int frac_pos; /* fractional sample position (based HZ) */ | |
b5d10781 | 214 | unsigned int frac_period_rest; |
b142037b TI |
215 | unsigned int frac_buffer_size; /* buffer_size * HZ */ |
216 | unsigned int frac_period_size; /* period_size * HZ */ | |
217 | unsigned int rate; | |
b5d10781 | 218 | int elapsed; |
4a4d2cfd TI |
219 | struct snd_pcm_substream *substream; |
220 | }; | |
1da177e4 | 221 | |
b142037b TI |
222 | static void dummy_systimer_rearm(struct dummy_systimer_pcm *dpcm) |
223 | { | |
b142037b | 224 | dpcm->timer.expires = jiffies + |
b5d10781 | 225 | (dpcm->frac_period_rest + dpcm->rate - 1) / dpcm->rate; |
b142037b TI |
226 | add_timer(&dpcm->timer); |
227 | } | |
228 | ||
229 | static void dummy_systimer_update(struct dummy_systimer_pcm *dpcm) | |
230 | { | |
231 | unsigned long delta; | |
232 | ||
233 | delta = jiffies - dpcm->base_time; | |
234 | if (!delta) | |
235 | return; | |
b5d10781 TI |
236 | dpcm->base_time += delta; |
237 | delta *= dpcm->rate; | |
238 | dpcm->frac_pos += delta; | |
b142037b TI |
239 | while (dpcm->frac_pos >= dpcm->frac_buffer_size) |
240 | dpcm->frac_pos -= dpcm->frac_buffer_size; | |
b5d10781 TI |
241 | while (dpcm->frac_period_rest <= delta) { |
242 | dpcm->elapsed++; | |
243 | dpcm->frac_period_rest += dpcm->frac_period_size; | |
244 | } | |
245 | dpcm->frac_period_rest -= delta; | |
b142037b TI |
246 | } |
247 | ||
c631d03c | 248 | static int dummy_systimer_start(struct snd_pcm_substream *substream) |
1da177e4 | 249 | { |
c631d03c TI |
250 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
251 | spin_lock(&dpcm->lock); | |
b142037b TI |
252 | dpcm->base_time = jiffies; |
253 | dummy_systimer_rearm(dpcm); | |
c631d03c TI |
254 | spin_unlock(&dpcm->lock); |
255 | return 0; | |
1da177e4 LT |
256 | } |
257 | ||
c631d03c | 258 | static int dummy_systimer_stop(struct snd_pcm_substream *substream) |
1da177e4 | 259 | { |
c631d03c | 260 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
c8eb6ba1 | 261 | spin_lock(&dpcm->lock); |
c631d03c | 262 | del_timer(&dpcm->timer); |
c8eb6ba1 | 263 | spin_unlock(&dpcm->lock); |
6e65c1cc | 264 | return 0; |
1da177e4 LT |
265 | } |
266 | ||
c631d03c | 267 | static int dummy_systimer_prepare(struct snd_pcm_substream *substream) |
1da177e4 | 268 | { |
4a4d2cfd | 269 | struct snd_pcm_runtime *runtime = substream->runtime; |
c631d03c | 270 | struct dummy_systimer_pcm *dpcm = runtime->private_data; |
369b240d | 271 | |
b142037b TI |
272 | dpcm->frac_pos = 0; |
273 | dpcm->rate = runtime->rate; | |
274 | dpcm->frac_buffer_size = runtime->buffer_size * HZ; | |
275 | dpcm->frac_period_size = runtime->period_size * HZ; | |
b5d10781 TI |
276 | dpcm->frac_period_rest = dpcm->frac_period_size; |
277 | dpcm->elapsed = 0; | |
53463a83 | 278 | |
1da177e4 LT |
279 | return 0; |
280 | } | |
281 | ||
c631d03c | 282 | static void dummy_systimer_callback(unsigned long data) |
1da177e4 | 283 | { |
c631d03c | 284 | struct dummy_systimer_pcm *dpcm = (struct dummy_systimer_pcm *)data; |
b32425ac | 285 | unsigned long flags; |
b5d10781 | 286 | int elapsed = 0; |
1da177e4 | 287 | |
b32425ac | 288 | spin_lock_irqsave(&dpcm->lock, flags); |
b142037b TI |
289 | dummy_systimer_update(dpcm); |
290 | dummy_systimer_rearm(dpcm); | |
b5d10781 TI |
291 | elapsed = dpcm->elapsed; |
292 | dpcm->elapsed = 0; | |
b142037b | 293 | spin_unlock_irqrestore(&dpcm->lock, flags); |
b5d10781 TI |
294 | if (elapsed) |
295 | snd_pcm_period_elapsed(dpcm->substream); | |
1da177e4 LT |
296 | } |
297 | ||
c631d03c TI |
298 | static snd_pcm_uframes_t |
299 | dummy_systimer_pointer(struct snd_pcm_substream *substream) | |
1da177e4 | 300 | { |
b142037b | 301 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
b5d10781 | 302 | snd_pcm_uframes_t pos; |
1da177e4 | 303 | |
b142037b TI |
304 | spin_lock(&dpcm->lock); |
305 | dummy_systimer_update(dpcm); | |
b5d10781 | 306 | pos = dpcm->frac_pos / HZ; |
b142037b | 307 | spin_unlock(&dpcm->lock); |
b5d10781 | 308 | return pos; |
1da177e4 LT |
309 | } |
310 | ||
c631d03c | 311 | static int dummy_systimer_create(struct snd_pcm_substream *substream) |
1da177e4 | 312 | { |
c631d03c TI |
313 | struct dummy_systimer_pcm *dpcm; |
314 | ||
315 | dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); | |
316 | if (!dpcm) | |
317 | return -ENOMEM; | |
318 | substream->runtime->private_data = dpcm; | |
319 | init_timer(&dpcm->timer); | |
320 | dpcm->timer.data = (unsigned long) dpcm; | |
321 | dpcm->timer.function = dummy_systimer_callback; | |
322 | spin_lock_init(&dpcm->lock); | |
323 | dpcm->substream = substream; | |
324 | return 0; | |
325 | } | |
326 | ||
327 | static void dummy_systimer_free(struct snd_pcm_substream *substream) | |
328 | { | |
329 | kfree(substream->runtime->private_data); | |
330 | } | |
331 | ||
332 | static struct dummy_timer_ops dummy_systimer_ops = { | |
333 | .create = dummy_systimer_create, | |
334 | .free = dummy_systimer_free, | |
335 | .prepare = dummy_systimer_prepare, | |
336 | .start = dummy_systimer_start, | |
337 | .stop = dummy_systimer_stop, | |
338 | .pointer = dummy_systimer_pointer, | |
1da177e4 LT |
339 | }; |
340 | ||
c631d03c TI |
341 | #ifdef CONFIG_HIGH_RES_TIMERS |
342 | /* | |
343 | * hrtimer interface | |
344 | */ | |
345 | ||
346 | struct dummy_hrtimer_pcm { | |
347 | ktime_t base_time; | |
348 | ktime_t period_time; | |
349 | atomic_t running; | |
350 | struct hrtimer timer; | |
351 | struct tasklet_struct tasklet; | |
352 | struct snd_pcm_substream *substream; | |
353 | }; | |
354 | ||
355 | static void dummy_hrtimer_pcm_elapsed(unsigned long priv) | |
356 | { | |
357 | struct dummy_hrtimer_pcm *dpcm = (struct dummy_hrtimer_pcm *)priv; | |
358 | if (atomic_read(&dpcm->running)) | |
359 | snd_pcm_period_elapsed(dpcm->substream); | |
360 | } | |
361 | ||
362 | static enum hrtimer_restart dummy_hrtimer_callback(struct hrtimer *timer) | |
363 | { | |
364 | struct dummy_hrtimer_pcm *dpcm; | |
365 | ||
366 | dpcm = container_of(timer, struct dummy_hrtimer_pcm, timer); | |
367 | if (!atomic_read(&dpcm->running)) | |
368 | return HRTIMER_NORESTART; | |
369 | tasklet_schedule(&dpcm->tasklet); | |
370 | hrtimer_forward_now(timer, dpcm->period_time); | |
371 | return HRTIMER_RESTART; | |
372 | } | |
373 | ||
374 | static int dummy_hrtimer_start(struct snd_pcm_substream *substream) | |
375 | { | |
376 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; | |
377 | ||
378 | dpcm->base_time = hrtimer_cb_get_time(&dpcm->timer); | |
379 | hrtimer_start(&dpcm->timer, dpcm->period_time, HRTIMER_MODE_REL); | |
380 | atomic_set(&dpcm->running, 1); | |
381 | return 0; | |
382 | } | |
383 | ||
384 | static int dummy_hrtimer_stop(struct snd_pcm_substream *substream) | |
385 | { | |
386 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; | |
387 | ||
388 | atomic_set(&dpcm->running, 0); | |
389 | hrtimer_cancel(&dpcm->timer); | |
390 | return 0; | |
391 | } | |
392 | ||
393 | static inline void dummy_hrtimer_sync(struct dummy_hrtimer_pcm *dpcm) | |
394 | { | |
395 | tasklet_kill(&dpcm->tasklet); | |
396 | } | |
397 | ||
398 | static snd_pcm_uframes_t | |
399 | dummy_hrtimer_pointer(struct snd_pcm_substream *substream) | |
400 | { | |
401 | struct snd_pcm_runtime *runtime = substream->runtime; | |
402 | struct dummy_hrtimer_pcm *dpcm = runtime->private_data; | |
403 | u64 delta; | |
404 | u32 pos; | |
405 | ||
406 | delta = ktime_us_delta(hrtimer_cb_get_time(&dpcm->timer), | |
407 | dpcm->base_time); | |
408 | delta = div_u64(delta * runtime->rate + 999999, 1000000); | |
409 | div_u64_rem(delta, runtime->buffer_size, &pos); | |
410 | return pos; | |
411 | } | |
412 | ||
413 | static int dummy_hrtimer_prepare(struct snd_pcm_substream *substream) | |
1da177e4 | 414 | { |
c631d03c TI |
415 | struct snd_pcm_runtime *runtime = substream->runtime; |
416 | struct dummy_hrtimer_pcm *dpcm = runtime->private_data; | |
417 | unsigned int period, rate; | |
418 | long sec; | |
419 | unsigned long nsecs; | |
420 | ||
421 | dummy_hrtimer_sync(dpcm); | |
422 | period = runtime->period_size; | |
423 | rate = runtime->rate; | |
424 | sec = period / rate; | |
425 | period %= rate; | |
426 | nsecs = div_u64((u64)period * 1000000000UL + rate - 1, rate); | |
427 | dpcm->period_time = ktime_set(sec, nsecs); | |
428 | ||
429 | return 0; | |
430 | } | |
431 | ||
432 | static int dummy_hrtimer_create(struct snd_pcm_substream *substream) | |
433 | { | |
434 | struct dummy_hrtimer_pcm *dpcm; | |
435 | ||
436 | dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); | |
437 | if (!dpcm) | |
438 | return -ENOMEM; | |
439 | substream->runtime->private_data = dpcm; | |
440 | hrtimer_init(&dpcm->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); | |
441 | dpcm->timer.function = dummy_hrtimer_callback; | |
442 | dpcm->substream = substream; | |
443 | atomic_set(&dpcm->running, 0); | |
444 | tasklet_init(&dpcm->tasklet, dummy_hrtimer_pcm_elapsed, | |
445 | (unsigned long)dpcm); | |
446 | return 0; | |
447 | } | |
448 | ||
449 | static void dummy_hrtimer_free(struct snd_pcm_substream *substream) | |
450 | { | |
451 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; | |
452 | dummy_hrtimer_sync(dpcm); | |
453 | kfree(dpcm); | |
454 | } | |
455 | ||
456 | static struct dummy_timer_ops dummy_hrtimer_ops = { | |
457 | .create = dummy_hrtimer_create, | |
458 | .free = dummy_hrtimer_free, | |
459 | .prepare = dummy_hrtimer_prepare, | |
460 | .start = dummy_hrtimer_start, | |
461 | .stop = dummy_hrtimer_stop, | |
462 | .pointer = dummy_hrtimer_pointer, | |
463 | }; | |
464 | ||
465 | #endif /* CONFIG_HIGH_RES_TIMERS */ | |
466 | ||
467 | /* | |
468 | * PCM interface | |
469 | */ | |
470 | ||
471 | static int dummy_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
472 | { | |
473 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); | |
474 | ||
475 | switch (cmd) { | |
476 | case SNDRV_PCM_TRIGGER_START: | |
477 | case SNDRV_PCM_TRIGGER_RESUME: | |
478 | return dummy->timer_ops->start(substream); | |
479 | case SNDRV_PCM_TRIGGER_STOP: | |
480 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
481 | return dummy->timer_ops->stop(substream); | |
482 | } | |
483 | return -EINVAL; | |
484 | } | |
485 | ||
486 | static int dummy_pcm_prepare(struct snd_pcm_substream *substream) | |
487 | { | |
c631d03c TI |
488 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); |
489 | ||
c631d03c TI |
490 | return dummy->timer_ops->prepare(substream); |
491 | } | |
492 | ||
493 | static snd_pcm_uframes_t dummy_pcm_pointer(struct snd_pcm_substream *substream) | |
494 | { | |
495 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); | |
496 | ||
497 | return dummy->timer_ops->pointer(substream); | |
498 | } | |
499 | ||
500 | static struct snd_pcm_hardware dummy_pcm_hardware = { | |
501 | .info = (SNDRV_PCM_INFO_MMAP | | |
502 | SNDRV_PCM_INFO_INTERLEAVED | | |
503 | SNDRV_PCM_INFO_RESUME | | |
504 | SNDRV_PCM_INFO_MMAP_VALID), | |
1da177e4 LT |
505 | .formats = USE_FORMATS, |
506 | .rates = USE_RATE, | |
507 | .rate_min = USE_RATE_MIN, | |
508 | .rate_max = USE_RATE_MAX, | |
509 | .channels_min = USE_CHANNELS_MIN, | |
510 | .channels_max = USE_CHANNELS_MAX, | |
511 | .buffer_bytes_max = MAX_BUFFER_SIZE, | |
512 | .period_bytes_min = 64, | |
2ad5dd8d | 513 | .period_bytes_max = MAX_PERIOD_SIZE, |
1da177e4 LT |
514 | .periods_min = USE_PERIODS_MIN, |
515 | .periods_max = USE_PERIODS_MAX, | |
516 | .fifo_size = 0, | |
517 | }; | |
518 | ||
c631d03c TI |
519 | static int dummy_pcm_hw_params(struct snd_pcm_substream *substream, |
520 | struct snd_pcm_hw_params *hw_params) | |
1da177e4 | 521 | { |
a68c4d11 TI |
522 | if (fake_buffer) { |
523 | /* runtime->dma_bytes has to be set manually to allow mmap */ | |
524 | substream->runtime->dma_bytes = params_buffer_bytes(hw_params); | |
525 | return 0; | |
526 | } | |
c631d03c TI |
527 | return snd_pcm_lib_malloc_pages(substream, |
528 | params_buffer_bytes(hw_params)); | |
1da177e4 LT |
529 | } |
530 | ||
c631d03c | 531 | static int dummy_pcm_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 532 | { |
a68c4d11 TI |
533 | if (fake_buffer) |
534 | return 0; | |
1da177e4 LT |
535 | return snd_pcm_lib_free_pages(substream); |
536 | } | |
537 | ||
c631d03c | 538 | static int dummy_pcm_open(struct snd_pcm_substream *substream) |
c8eb6ba1 | 539 | { |
c631d03c | 540 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); |
4a4d2cfd | 541 | struct snd_pcm_runtime *runtime = substream->runtime; |
c8eb6ba1 TI |
542 | int err; |
543 | ||
c631d03c TI |
544 | dummy->timer_ops = &dummy_systimer_ops; |
545 | #ifdef CONFIG_HIGH_RES_TIMERS | |
546 | if (hrtimer) | |
547 | dummy->timer_ops = &dummy_hrtimer_ops; | |
548 | #endif | |
549 | ||
550 | err = dummy->timer_ops->create(substream); | |
1a11cb64 | 551 | if (err < 0) |
1da177e4 | 552 | return err; |
1da177e4 | 553 | |
c631d03c TI |
554 | runtime->hw = dummy_pcm_hardware; |
555 | if (substream->pcm->device & 1) { | |
1da177e4 LT |
556 | runtime->hw.info &= ~SNDRV_PCM_INFO_INTERLEAVED; |
557 | runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED; | |
558 | } | |
559 | if (substream->pcm->device & 2) | |
c631d03c TI |
560 | runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP | |
561 | SNDRV_PCM_INFO_MMAP_VALID); | |
562 | ||
563 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
564 | err = add_playback_constraints(substream->runtime); | |
565 | else | |
566 | err = add_capture_constraints(substream->runtime); | |
567 | if (err < 0) { | |
568 | dummy->timer_ops->free(substream); | |
1da177e4 | 569 | return err; |
c631d03c | 570 | } |
1da177e4 LT |
571 | return 0; |
572 | } | |
573 | ||
c631d03c | 574 | static int dummy_pcm_close(struct snd_pcm_substream *substream) |
1da177e4 | 575 | { |
c631d03c TI |
576 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); |
577 | dummy->timer_ops->free(substream); | |
1da177e4 LT |
578 | return 0; |
579 | } | |
580 | ||
a68c4d11 TI |
581 | /* |
582 | * dummy buffer handling | |
583 | */ | |
584 | ||
585 | static void *dummy_page[2]; | |
586 | ||
587 | static void free_fake_buffer(void) | |
588 | { | |
589 | if (fake_buffer) { | |
590 | int i; | |
591 | for (i = 0; i < 2; i++) | |
592 | if (dummy_page[i]) { | |
593 | free_page((unsigned long)dummy_page[i]); | |
594 | dummy_page[i] = NULL; | |
595 | } | |
596 | } | |
597 | } | |
598 | ||
599 | static int alloc_fake_buffer(void) | |
600 | { | |
601 | int i; | |
602 | ||
603 | if (!fake_buffer) | |
604 | return 0; | |
605 | for (i = 0; i < 2; i++) { | |
606 | dummy_page[i] = (void *)get_zeroed_page(GFP_KERNEL); | |
607 | if (!dummy_page[i]) { | |
608 | free_fake_buffer(); | |
609 | return -ENOMEM; | |
610 | } | |
611 | } | |
612 | return 0; | |
613 | } | |
614 | ||
615 | static int dummy_pcm_copy(struct snd_pcm_substream *substream, | |
616 | int channel, snd_pcm_uframes_t pos, | |
617 | void __user *dst, snd_pcm_uframes_t count) | |
618 | { | |
619 | return 0; /* do nothing */ | |
620 | } | |
621 | ||
622 | static int dummy_pcm_silence(struct snd_pcm_substream *substream, | |
623 | int channel, snd_pcm_uframes_t pos, | |
624 | snd_pcm_uframes_t count) | |
625 | { | |
626 | return 0; /* do nothing */ | |
627 | } | |
628 | ||
629 | static struct page *dummy_pcm_page(struct snd_pcm_substream *substream, | |
630 | unsigned long offset) | |
631 | { | |
632 | return virt_to_page(dummy_page[substream->stream]); /* the same page */ | |
633 | } | |
634 | ||
c631d03c TI |
635 | static struct snd_pcm_ops dummy_pcm_ops = { |
636 | .open = dummy_pcm_open, | |
637 | .close = dummy_pcm_close, | |
638 | .ioctl = snd_pcm_lib_ioctl, | |
639 | .hw_params = dummy_pcm_hw_params, | |
640 | .hw_free = dummy_pcm_hw_free, | |
641 | .prepare = dummy_pcm_prepare, | |
642 | .trigger = dummy_pcm_trigger, | |
643 | .pointer = dummy_pcm_pointer, | |
1da177e4 LT |
644 | }; |
645 | ||
a68c4d11 TI |
646 | static struct snd_pcm_ops dummy_pcm_ops_no_buf = { |
647 | .open = dummy_pcm_open, | |
648 | .close = dummy_pcm_close, | |
649 | .ioctl = snd_pcm_lib_ioctl, | |
650 | .hw_params = dummy_pcm_hw_params, | |
651 | .hw_free = dummy_pcm_hw_free, | |
652 | .prepare = dummy_pcm_prepare, | |
653 | .trigger = dummy_pcm_trigger, | |
654 | .pointer = dummy_pcm_pointer, | |
655 | .copy = dummy_pcm_copy, | |
656 | .silence = dummy_pcm_silence, | |
657 | .page = dummy_pcm_page, | |
658 | }; | |
659 | ||
788c6043 PB |
660 | static int __devinit snd_card_dummy_pcm(struct snd_dummy *dummy, int device, |
661 | int substreams) | |
1da177e4 | 662 | { |
4a4d2cfd | 663 | struct snd_pcm *pcm; |
a68c4d11 | 664 | struct snd_pcm_ops *ops; |
1da177e4 LT |
665 | int err; |
666 | ||
1a11cb64 JK |
667 | err = snd_pcm_new(dummy->card, "Dummy PCM", device, |
668 | substreams, substreams, &pcm); | |
669 | if (err < 0) | |
1da177e4 | 670 | return err; |
6e65c1cc | 671 | dummy->pcm = pcm; |
a68c4d11 TI |
672 | if (fake_buffer) |
673 | ops = &dummy_pcm_ops_no_buf; | |
674 | else | |
675 | ops = &dummy_pcm_ops; | |
676 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, ops); | |
677 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, ops); | |
1da177e4 LT |
678 | pcm->private_data = dummy; |
679 | pcm->info_flags = 0; | |
680 | strcpy(pcm->name, "Dummy PCM"); | |
a68c4d11 TI |
681 | if (!fake_buffer) { |
682 | snd_pcm_lib_preallocate_pages_for_all(pcm, | |
683 | SNDRV_DMA_TYPE_CONTINUOUS, | |
684 | snd_dma_continuous_data(GFP_KERNEL), | |
685 | 0, 64*1024); | |
686 | } | |
1da177e4 LT |
687 | return 0; |
688 | } | |
689 | ||
9b151fec TI |
690 | /* |
691 | * mixer interface | |
692 | */ | |
693 | ||
1da177e4 | 694 | #define DUMMY_VOLUME(xname, xindex, addr) \ |
fb567a8e TI |
695 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ |
696 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \ | |
697 | .name = xname, .index = xindex, \ | |
1da177e4 LT |
698 | .info = snd_dummy_volume_info, \ |
699 | .get = snd_dummy_volume_get, .put = snd_dummy_volume_put, \ | |
fb567a8e TI |
700 | .private_value = addr, \ |
701 | .tlv = { .p = db_scale_dummy } } | |
1da177e4 | 702 | |
4a4d2cfd TI |
703 | static int snd_dummy_volume_info(struct snd_kcontrol *kcontrol, |
704 | struct snd_ctl_elem_info *uinfo) | |
1da177e4 LT |
705 | { |
706 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
707 | uinfo->count = 2; | |
708 | uinfo->value.integer.min = -50; | |
709 | uinfo->value.integer.max = 100; | |
710 | return 0; | |
711 | } | |
712 | ||
4a4d2cfd TI |
713 | static int snd_dummy_volume_get(struct snd_kcontrol *kcontrol, |
714 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 715 | { |
4a4d2cfd | 716 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
717 | int addr = kcontrol->private_value; |
718 | ||
c8eb6ba1 | 719 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
720 | ucontrol->value.integer.value[0] = dummy->mixer_volume[addr][0]; |
721 | ucontrol->value.integer.value[1] = dummy->mixer_volume[addr][1]; | |
c8eb6ba1 | 722 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
723 | return 0; |
724 | } | |
725 | ||
4a4d2cfd TI |
726 | static int snd_dummy_volume_put(struct snd_kcontrol *kcontrol, |
727 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 728 | { |
4a4d2cfd | 729 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
730 | int change, addr = kcontrol->private_value; |
731 | int left, right; | |
732 | ||
733 | left = ucontrol->value.integer.value[0]; | |
734 | if (left < -50) | |
735 | left = -50; | |
736 | if (left > 100) | |
737 | left = 100; | |
738 | right = ucontrol->value.integer.value[1]; | |
739 | if (right < -50) | |
740 | right = -50; | |
741 | if (right > 100) | |
742 | right = 100; | |
c8eb6ba1 | 743 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
744 | change = dummy->mixer_volume[addr][0] != left || |
745 | dummy->mixer_volume[addr][1] != right; | |
746 | dummy->mixer_volume[addr][0] = left; | |
747 | dummy->mixer_volume[addr][1] = right; | |
c8eb6ba1 | 748 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
749 | return change; |
750 | } | |
751 | ||
0cb29ea0 | 752 | static const DECLARE_TLV_DB_SCALE(db_scale_dummy, -4500, 30, 0); |
fb567a8e | 753 | |
1da177e4 LT |
754 | #define DUMMY_CAPSRC(xname, xindex, addr) \ |
755 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ | |
756 | .info = snd_dummy_capsrc_info, \ | |
757 | .get = snd_dummy_capsrc_get, .put = snd_dummy_capsrc_put, \ | |
758 | .private_value = addr } | |
759 | ||
a5ce8890 | 760 | #define snd_dummy_capsrc_info snd_ctl_boolean_stereo_info |
1da177e4 | 761 | |
4a4d2cfd TI |
762 | static int snd_dummy_capsrc_get(struct snd_kcontrol *kcontrol, |
763 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 764 | { |
4a4d2cfd | 765 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
766 | int addr = kcontrol->private_value; |
767 | ||
c8eb6ba1 | 768 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
769 | ucontrol->value.integer.value[0] = dummy->capture_source[addr][0]; |
770 | ucontrol->value.integer.value[1] = dummy->capture_source[addr][1]; | |
c8eb6ba1 | 771 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
772 | return 0; |
773 | } | |
774 | ||
4a4d2cfd | 775 | static int snd_dummy_capsrc_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1da177e4 | 776 | { |
4a4d2cfd | 777 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
778 | int change, addr = kcontrol->private_value; |
779 | int left, right; | |
780 | ||
781 | left = ucontrol->value.integer.value[0] & 1; | |
782 | right = ucontrol->value.integer.value[1] & 1; | |
c8eb6ba1 | 783 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
784 | change = dummy->capture_source[addr][0] != left && |
785 | dummy->capture_source[addr][1] != right; | |
786 | dummy->capture_source[addr][0] = left; | |
787 | dummy->capture_source[addr][1] = right; | |
c8eb6ba1 | 788 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
789 | return change; |
790 | } | |
791 | ||
4a4d2cfd | 792 | static struct snd_kcontrol_new snd_dummy_controls[] = { |
1da177e4 LT |
793 | DUMMY_VOLUME("Master Volume", 0, MIXER_ADDR_MASTER), |
794 | DUMMY_CAPSRC("Master Capture Switch", 0, MIXER_ADDR_MASTER), | |
795 | DUMMY_VOLUME("Synth Volume", 0, MIXER_ADDR_SYNTH), | |
e05d6964 | 796 | DUMMY_CAPSRC("Synth Capture Switch", 0, MIXER_ADDR_SYNTH), |
1da177e4 | 797 | DUMMY_VOLUME("Line Volume", 0, MIXER_ADDR_LINE), |
e05d6964 | 798 | DUMMY_CAPSRC("Line Capture Switch", 0, MIXER_ADDR_LINE), |
1da177e4 | 799 | DUMMY_VOLUME("Mic Volume", 0, MIXER_ADDR_MIC), |
e05d6964 | 800 | DUMMY_CAPSRC("Mic Capture Switch", 0, MIXER_ADDR_MIC), |
1da177e4 | 801 | DUMMY_VOLUME("CD Volume", 0, MIXER_ADDR_CD), |
e05d6964 | 802 | DUMMY_CAPSRC("CD Capture Switch", 0, MIXER_ADDR_CD) |
1da177e4 LT |
803 | }; |
804 | ||
788c6043 | 805 | static int __devinit snd_card_dummy_new_mixer(struct snd_dummy *dummy) |
1da177e4 | 806 | { |
4a4d2cfd | 807 | struct snd_card *card = dummy->card; |
1da177e4 LT |
808 | unsigned int idx; |
809 | int err; | |
810 | ||
1da177e4 LT |
811 | spin_lock_init(&dummy->mixer_lock); |
812 | strcpy(card->mixername, "Dummy Mixer"); | |
813 | ||
814 | for (idx = 0; idx < ARRAY_SIZE(snd_dummy_controls); idx++) { | |
1a11cb64 JK |
815 | err = snd_ctl_add(card, snd_ctl_new1(&snd_dummy_controls[idx], dummy)); |
816 | if (err < 0) | |
1da177e4 LT |
817 | return err; |
818 | } | |
819 | return 0; | |
820 | } | |
821 | ||
9b151fec TI |
822 | #if defined(CONFIG_SND_DEBUG) && defined(CONFIG_PROC_FS) |
823 | /* | |
824 | * proc interface | |
825 | */ | |
826 | static void print_formats(struct snd_info_buffer *buffer) | |
827 | { | |
828 | int i; | |
829 | ||
830 | for (i = 0; i < SNDRV_PCM_FORMAT_LAST; i++) { | |
831 | if (dummy_pcm_hardware.formats & (1ULL << i)) | |
832 | snd_iprintf(buffer, " %s", snd_pcm_format_name(i)); | |
833 | } | |
834 | } | |
835 | ||
836 | static void print_rates(struct snd_info_buffer *buffer) | |
837 | { | |
838 | static int rates[] = { | |
839 | 5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000, | |
840 | 64000, 88200, 96000, 176400, 192000, | |
841 | }; | |
842 | int i; | |
843 | ||
844 | if (dummy_pcm_hardware.rates & SNDRV_PCM_RATE_CONTINUOUS) | |
845 | snd_iprintf(buffer, " continuous"); | |
846 | if (dummy_pcm_hardware.rates & SNDRV_PCM_RATE_KNOT) | |
847 | snd_iprintf(buffer, " knot"); | |
848 | for (i = 0; i < ARRAY_SIZE(rates); i++) | |
849 | if (dummy_pcm_hardware.rates & (1 << i)) | |
850 | snd_iprintf(buffer, " %d", rates[i]); | |
851 | } | |
852 | ||
853 | #define get_dummy_int_ptr(ofs) \ | |
854 | (unsigned int *)((char *)&dummy_pcm_hardware + (ofs)) | |
855 | #define get_dummy_ll_ptr(ofs) \ | |
856 | (unsigned long long *)((char *)&dummy_pcm_hardware + (ofs)) | |
857 | ||
858 | struct dummy_hw_field { | |
859 | const char *name; | |
860 | const char *format; | |
861 | unsigned int offset; | |
862 | unsigned int size; | |
863 | }; | |
864 | #define FIELD_ENTRY(item, fmt) { \ | |
865 | .name = #item, \ | |
866 | .format = fmt, \ | |
867 | .offset = offsetof(struct snd_pcm_hardware, item), \ | |
868 | .size = sizeof(dummy_pcm_hardware.item) } | |
869 | ||
870 | static struct dummy_hw_field fields[] = { | |
871 | FIELD_ENTRY(formats, "%#llx"), | |
872 | FIELD_ENTRY(rates, "%#x"), | |
873 | FIELD_ENTRY(rate_min, "%d"), | |
874 | FIELD_ENTRY(rate_max, "%d"), | |
875 | FIELD_ENTRY(channels_min, "%d"), | |
876 | FIELD_ENTRY(channels_max, "%d"), | |
877 | FIELD_ENTRY(buffer_bytes_max, "%ld"), | |
878 | FIELD_ENTRY(period_bytes_min, "%ld"), | |
879 | FIELD_ENTRY(period_bytes_max, "%ld"), | |
880 | FIELD_ENTRY(periods_min, "%d"), | |
881 | FIELD_ENTRY(periods_max, "%d"), | |
882 | }; | |
883 | ||
884 | static void dummy_proc_read(struct snd_info_entry *entry, | |
885 | struct snd_info_buffer *buffer) | |
886 | { | |
887 | int i; | |
888 | ||
889 | for (i = 0; i < ARRAY_SIZE(fields); i++) { | |
890 | snd_iprintf(buffer, "%s ", fields[i].name); | |
891 | if (fields[i].size == sizeof(int)) | |
892 | snd_iprintf(buffer, fields[i].format, | |
893 | *get_dummy_int_ptr(fields[i].offset)); | |
894 | else | |
895 | snd_iprintf(buffer, fields[i].format, | |
896 | *get_dummy_ll_ptr(fields[i].offset)); | |
897 | if (!strcmp(fields[i].name, "formats")) | |
898 | print_formats(buffer); | |
899 | else if (!strcmp(fields[i].name, "rates")) | |
900 | print_rates(buffer); | |
901 | snd_iprintf(buffer, "\n"); | |
902 | } | |
903 | } | |
904 | ||
905 | static void dummy_proc_write(struct snd_info_entry *entry, | |
906 | struct snd_info_buffer *buffer) | |
907 | { | |
908 | char line[64]; | |
909 | ||
910 | while (!snd_info_get_line(buffer, line, sizeof(line))) { | |
911 | char item[20]; | |
912 | const char *ptr; | |
913 | unsigned long long val; | |
914 | int i; | |
915 | ||
916 | ptr = snd_info_get_str(item, line, sizeof(item)); | |
917 | for (i = 0; i < ARRAY_SIZE(fields); i++) { | |
918 | if (!strcmp(item, fields[i].name)) | |
919 | break; | |
920 | } | |
921 | if (i >= ARRAY_SIZE(fields)) | |
922 | continue; | |
923 | snd_info_get_str(item, ptr, sizeof(item)); | |
924 | if (strict_strtoull(item, 0, &val)) | |
925 | continue; | |
926 | if (fields[i].size == sizeof(int)) | |
927 | *get_dummy_int_ptr(fields[i].offset) = val; | |
928 | else | |
929 | *get_dummy_ll_ptr(fields[i].offset) = val; | |
930 | } | |
931 | } | |
932 | ||
933 | static void __devinit dummy_proc_init(struct snd_dummy *chip) | |
934 | { | |
935 | struct snd_info_entry *entry; | |
936 | ||
937 | if (!snd_card_proc_new(chip->card, "dummy_pcm", &entry)) { | |
938 | snd_info_set_text_ops(entry, chip, dummy_proc_read); | |
939 | entry->c.text.write = dummy_proc_write; | |
940 | entry->mode |= S_IWUSR; | |
941 | } | |
942 | } | |
943 | #else | |
944 | #define dummy_proc_init(x) | |
945 | #endif /* CONFIG_SND_DEBUG && CONFIG_PROC_FS */ | |
946 | ||
788c6043 | 947 | static int __devinit snd_dummy_probe(struct platform_device *devptr) |
1da177e4 | 948 | { |
4a4d2cfd TI |
949 | struct snd_card *card; |
950 | struct snd_dummy *dummy; | |
1da177e4 | 951 | int idx, err; |
6e65c1cc | 952 | int dev = devptr->id; |
1da177e4 | 953 | |
bd7dd77c TI |
954 | err = snd_card_create(index[dev], id[dev], THIS_MODULE, |
955 | sizeof(struct snd_dummy), &card); | |
956 | if (err < 0) | |
957 | return err; | |
4a4d2cfd | 958 | dummy = card->private_data; |
1da177e4 LT |
959 | dummy->card = card; |
960 | for (idx = 0; idx < MAX_PCM_DEVICES && idx < pcm_devs[dev]; idx++) { | |
961 | if (pcm_substreams[dev] < 1) | |
962 | pcm_substreams[dev] = 1; | |
963 | if (pcm_substreams[dev] > MAX_PCM_SUBSTREAMS) | |
964 | pcm_substreams[dev] = MAX_PCM_SUBSTREAMS; | |
1a11cb64 JK |
965 | err = snd_card_dummy_pcm(dummy, idx, pcm_substreams[dev]); |
966 | if (err < 0) | |
1da177e4 LT |
967 | goto __nodev; |
968 | } | |
1a11cb64 JK |
969 | err = snd_card_dummy_new_mixer(dummy); |
970 | if (err < 0) | |
1da177e4 LT |
971 | goto __nodev; |
972 | strcpy(card->driver, "Dummy"); | |
973 | strcpy(card->shortname, "Dummy"); | |
974 | sprintf(card->longname, "Dummy %i", dev + 1); | |
16dab54b | 975 | |
9b151fec TI |
976 | dummy_proc_init(dummy); |
977 | ||
6e65c1cc | 978 | snd_card_set_dev(card, &devptr->dev); |
16dab54b | 979 | |
1a11cb64 JK |
980 | err = snd_card_register(card); |
981 | if (err == 0) { | |
6e65c1cc | 982 | platform_set_drvdata(devptr, card); |
1da177e4 LT |
983 | return 0; |
984 | } | |
985 | __nodev: | |
986 | snd_card_free(card); | |
987 | return err; | |
988 | } | |
989 | ||
788c6043 | 990 | static int __devexit snd_dummy_remove(struct platform_device *devptr) |
6e65c1cc TI |
991 | { |
992 | snd_card_free(platform_get_drvdata(devptr)); | |
993 | platform_set_drvdata(devptr, NULL); | |
994 | return 0; | |
995 | } | |
996 | ||
997 | #ifdef CONFIG_PM | |
998 | static int snd_dummy_suspend(struct platform_device *pdev, pm_message_t state) | |
1da177e4 | 999 | { |
6e65c1cc TI |
1000 | struct snd_card *card = platform_get_drvdata(pdev); |
1001 | struct snd_dummy *dummy = card->private_data; | |
1da177e4 | 1002 | |
6e65c1cc TI |
1003 | snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
1004 | snd_pcm_suspend_all(dummy->pcm); | |
1005 | return 0; | |
1006 | } | |
1007 | ||
1008 | static int snd_dummy_resume(struct platform_device *pdev) | |
1009 | { | |
1010 | struct snd_card *card = platform_get_drvdata(pdev); | |
1011 | ||
1012 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); | |
1013 | return 0; | |
1014 | } | |
1015 | #endif | |
1016 | ||
1017 | #define SND_DUMMY_DRIVER "snd_dummy" | |
1018 | ||
1019 | static struct platform_driver snd_dummy_driver = { | |
1020 | .probe = snd_dummy_probe, | |
788c6043 | 1021 | .remove = __devexit_p(snd_dummy_remove), |
6e65c1cc TI |
1022 | #ifdef CONFIG_PM |
1023 | .suspend = snd_dummy_suspend, | |
1024 | .resume = snd_dummy_resume, | |
1da177e4 | 1025 | #endif |
6e65c1cc TI |
1026 | .driver = { |
1027 | .name = SND_DUMMY_DRIVER | |
1028 | }, | |
1029 | }; | |
1030 | ||
c12aad6e | 1031 | static void snd_dummy_unregister_all(void) |
f7a9275d CL |
1032 | { |
1033 | int i; | |
1034 | ||
1035 | for (i = 0; i < ARRAY_SIZE(devices); ++i) | |
1036 | platform_device_unregister(devices[i]); | |
1037 | platform_driver_unregister(&snd_dummy_driver); | |
a68c4d11 | 1038 | free_fake_buffer(); |
f7a9275d CL |
1039 | } |
1040 | ||
6e65c1cc TI |
1041 | static int __init alsa_card_dummy_init(void) |
1042 | { | |
1043 | int i, cards, err; | |
1044 | ||
1a11cb64 JK |
1045 | err = platform_driver_register(&snd_dummy_driver); |
1046 | if (err < 0) | |
6e65c1cc TI |
1047 | return err; |
1048 | ||
a68c4d11 TI |
1049 | err = alloc_fake_buffer(); |
1050 | if (err < 0) { | |
1051 | platform_driver_unregister(&snd_dummy_driver); | |
1052 | return err; | |
1053 | } | |
1054 | ||
6e65c1cc | 1055 | cards = 0; |
8278ca8f | 1056 | for (i = 0; i < SNDRV_CARDS; i++) { |
6e65c1cc | 1057 | struct platform_device *device; |
8278ca8f TI |
1058 | if (! enable[i]) |
1059 | continue; | |
6e65c1cc TI |
1060 | device = platform_device_register_simple(SND_DUMMY_DRIVER, |
1061 | i, NULL, 0); | |
a182ee98 RH |
1062 | if (IS_ERR(device)) |
1063 | continue; | |
7152447d RH |
1064 | if (!platform_get_drvdata(device)) { |
1065 | platform_device_unregister(device); | |
1066 | continue; | |
1067 | } | |
f7a9275d | 1068 | devices[i] = device; |
1da177e4 LT |
1069 | cards++; |
1070 | } | |
1071 | if (!cards) { | |
1072 | #ifdef MODULE | |
1073 | printk(KERN_ERR "Dummy soundcard not found or device busy\n"); | |
1074 | #endif | |
a182ee98 RH |
1075 | snd_dummy_unregister_all(); |
1076 | return -ENODEV; | |
1da177e4 LT |
1077 | } |
1078 | return 0; | |
1079 | } | |
1080 | ||
1081 | static void __exit alsa_card_dummy_exit(void) | |
1082 | { | |
f7a9275d | 1083 | snd_dummy_unregister_all(); |
1da177e4 LT |
1084 | } |
1085 | ||
1086 | module_init(alsa_card_dummy_init) | |
1087 | module_exit(alsa_card_dummy_exit) |