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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 | 89 | #ifdef CONFIG_HIGH_RES_TIMERS |
ddce57a6 | 90 | module_param(hrtimer, bool, 0644); |
c631d03c TI |
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 | ||
ddce57a6 TI |
112 | #define get_dummy_ops(substream) \ |
113 | (*(const struct dummy_timer_ops **)(substream)->runtime->private_data) | |
114 | ||
d5e1ca05 JK |
115 | struct dummy_model { |
116 | const char *name; | |
117 | int (*playback_constraints)(struct snd_pcm_runtime *runtime); | |
118 | int (*capture_constraints)(struct snd_pcm_runtime *runtime); | |
119 | u64 formats; | |
120 | size_t buffer_bytes_max; | |
121 | size_t period_bytes_min; | |
122 | size_t period_bytes_max; | |
123 | unsigned int periods_min; | |
124 | unsigned int periods_max; | |
125 | unsigned int rates; | |
126 | unsigned int rate_min; | |
127 | unsigned int rate_max; | |
128 | unsigned int channels_min; | |
129 | unsigned int channels_max; | |
130 | }; | |
131 | ||
4a4d2cfd TI |
132 | struct snd_dummy { |
133 | struct snd_card *card; | |
d5e1ca05 | 134 | struct dummy_model *model; |
6e65c1cc | 135 | struct snd_pcm *pcm; |
d5e1ca05 | 136 | struct snd_pcm_hardware pcm_hw; |
1da177e4 LT |
137 | spinlock_t mixer_lock; |
138 | int mixer_volume[MIXER_ADDR_LAST+1][2]; | |
139 | int capture_source[MIXER_ADDR_LAST+1][2]; | |
16e43467 CL |
140 | int iobox; |
141 | struct snd_kcontrol *cd_volume_ctl; | |
142 | struct snd_kcontrol *cd_switch_ctl; | |
4a4d2cfd | 143 | }; |
1da177e4 | 144 | |
d5e1ca05 JK |
145 | /* |
146 | * card models | |
147 | */ | |
148 | ||
149 | static int emu10k1_playback_constraints(struct snd_pcm_runtime *runtime) | |
150 | { | |
151 | int err; | |
152 | err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); | |
153 | if (err < 0) | |
154 | return err; | |
155 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 256, UINT_MAX); | |
156 | if (err < 0) | |
157 | return err; | |
158 | return 0; | |
159 | } | |
160 | ||
e4c28688 | 161 | static struct dummy_model model_emu10k1 = { |
d5e1ca05 JK |
162 | .name = "emu10k1", |
163 | .playback_constraints = emu10k1_playback_constraints, | |
164 | .buffer_bytes_max = 128 * 1024, | |
165 | }; | |
166 | ||
e4c28688 | 167 | static struct dummy_model model_rme9652 = { |
d5e1ca05 JK |
168 | .name = "rme9652", |
169 | .buffer_bytes_max = 26 * 64 * 1024, | |
170 | .formats = SNDRV_PCM_FMTBIT_S32_LE, | |
171 | .channels_min = 26, | |
172 | .channels_max = 26, | |
173 | .periods_min = 2, | |
174 | .periods_max = 2, | |
175 | }; | |
176 | ||
e4c28688 | 177 | static struct dummy_model model_ice1712 = { |
d5e1ca05 JK |
178 | .name = "ice1712", |
179 | .buffer_bytes_max = 256 * 1024, | |
180 | .formats = SNDRV_PCM_FMTBIT_S32_LE, | |
181 | .channels_min = 10, | |
182 | .channels_max = 10, | |
183 | .periods_min = 1, | |
184 | .periods_max = 1024, | |
185 | }; | |
186 | ||
e4c28688 | 187 | static struct dummy_model model_uda1341 = { |
d5e1ca05 JK |
188 | .name = "uda1341", |
189 | .buffer_bytes_max = 16380, | |
190 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
191 | .channels_min = 2, | |
192 | .channels_max = 2, | |
193 | .periods_min = 2, | |
194 | .periods_max = 255, | |
195 | }; | |
196 | ||
e4c28688 | 197 | static struct dummy_model model_ac97 = { |
d5e1ca05 JK |
198 | .name = "ac97", |
199 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
200 | .channels_min = 2, | |
201 | .channels_max = 2, | |
202 | .rates = SNDRV_PCM_RATE_48000, | |
203 | .rate_min = 48000, | |
204 | .rate_max = 48000, | |
205 | }; | |
206 | ||
e4c28688 | 207 | static struct dummy_model model_ca0106 = { |
d5e1ca05 JK |
208 | .name = "ca0106", |
209 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
210 | .buffer_bytes_max = ((65536-64)*8), | |
211 | .period_bytes_max = (65536-64), | |
212 | .periods_min = 2, | |
213 | .periods_max = 8, | |
214 | .channels_min = 2, | |
215 | .channels_max = 2, | |
216 | .rates = SNDRV_PCM_RATE_48000|SNDRV_PCM_RATE_96000|SNDRV_PCM_RATE_192000, | |
217 | .rate_min = 48000, | |
218 | .rate_max = 192000, | |
219 | }; | |
220 | ||
e4c28688 | 221 | static struct dummy_model *dummy_models[] = { |
d5e1ca05 JK |
222 | &model_emu10k1, |
223 | &model_rme9652, | |
224 | &model_ice1712, | |
225 | &model_uda1341, | |
226 | &model_ac97, | |
227 | &model_ca0106, | |
228 | NULL | |
229 | }; | |
230 | ||
c631d03c TI |
231 | /* |
232 | * system timer interface | |
233 | */ | |
234 | ||
235 | struct dummy_systimer_pcm { | |
ddce57a6 TI |
236 | /* ops must be the first item */ |
237 | const struct dummy_timer_ops *timer_ops; | |
1da177e4 LT |
238 | spinlock_t lock; |
239 | struct timer_list timer; | |
b142037b TI |
240 | unsigned long base_time; |
241 | unsigned int frac_pos; /* fractional sample position (based HZ) */ | |
b5d10781 | 242 | unsigned int frac_period_rest; |
b142037b TI |
243 | unsigned int frac_buffer_size; /* buffer_size * HZ */ |
244 | unsigned int frac_period_size; /* period_size * HZ */ | |
245 | unsigned int rate; | |
b5d10781 | 246 | int elapsed; |
4a4d2cfd TI |
247 | struct snd_pcm_substream *substream; |
248 | }; | |
1da177e4 | 249 | |
b142037b TI |
250 | static void dummy_systimer_rearm(struct dummy_systimer_pcm *dpcm) |
251 | { | |
2a52b6ee RK |
252 | mod_timer(&dpcm->timer, jiffies + |
253 | (dpcm->frac_period_rest + dpcm->rate - 1) / dpcm->rate); | |
b142037b TI |
254 | } |
255 | ||
256 | static void dummy_systimer_update(struct dummy_systimer_pcm *dpcm) | |
257 | { | |
258 | unsigned long delta; | |
259 | ||
260 | delta = jiffies - dpcm->base_time; | |
261 | if (!delta) | |
262 | return; | |
b5d10781 TI |
263 | dpcm->base_time += delta; |
264 | delta *= dpcm->rate; | |
265 | dpcm->frac_pos += delta; | |
b142037b TI |
266 | while (dpcm->frac_pos >= dpcm->frac_buffer_size) |
267 | dpcm->frac_pos -= dpcm->frac_buffer_size; | |
b5d10781 TI |
268 | while (dpcm->frac_period_rest <= delta) { |
269 | dpcm->elapsed++; | |
270 | dpcm->frac_period_rest += dpcm->frac_period_size; | |
271 | } | |
272 | dpcm->frac_period_rest -= delta; | |
b142037b TI |
273 | } |
274 | ||
c631d03c | 275 | static int dummy_systimer_start(struct snd_pcm_substream *substream) |
1da177e4 | 276 | { |
c631d03c TI |
277 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
278 | spin_lock(&dpcm->lock); | |
b142037b TI |
279 | dpcm->base_time = jiffies; |
280 | dummy_systimer_rearm(dpcm); | |
c631d03c TI |
281 | spin_unlock(&dpcm->lock); |
282 | return 0; | |
1da177e4 LT |
283 | } |
284 | ||
c631d03c | 285 | static int dummy_systimer_stop(struct snd_pcm_substream *substream) |
1da177e4 | 286 | { |
c631d03c | 287 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
c8eb6ba1 | 288 | spin_lock(&dpcm->lock); |
c631d03c | 289 | del_timer(&dpcm->timer); |
c8eb6ba1 | 290 | spin_unlock(&dpcm->lock); |
6e65c1cc | 291 | return 0; |
1da177e4 LT |
292 | } |
293 | ||
c631d03c | 294 | static int dummy_systimer_prepare(struct snd_pcm_substream *substream) |
1da177e4 | 295 | { |
4a4d2cfd | 296 | struct snd_pcm_runtime *runtime = substream->runtime; |
c631d03c | 297 | struct dummy_systimer_pcm *dpcm = runtime->private_data; |
369b240d | 298 | |
b142037b TI |
299 | dpcm->frac_pos = 0; |
300 | dpcm->rate = runtime->rate; | |
301 | dpcm->frac_buffer_size = runtime->buffer_size * HZ; | |
302 | dpcm->frac_period_size = runtime->period_size * HZ; | |
b5d10781 TI |
303 | dpcm->frac_period_rest = dpcm->frac_period_size; |
304 | dpcm->elapsed = 0; | |
53463a83 | 305 | |
1da177e4 LT |
306 | return 0; |
307 | } | |
308 | ||
bc47ba90 | 309 | static void dummy_systimer_callback(struct timer_list *t) |
1da177e4 | 310 | { |
bc47ba90 | 311 | struct dummy_systimer_pcm *dpcm = from_timer(dpcm, t, timer); |
b32425ac | 312 | unsigned long flags; |
b5d10781 | 313 | int elapsed = 0; |
1da177e4 | 314 | |
b32425ac | 315 | spin_lock_irqsave(&dpcm->lock, flags); |
b142037b TI |
316 | dummy_systimer_update(dpcm); |
317 | dummy_systimer_rearm(dpcm); | |
b5d10781 TI |
318 | elapsed = dpcm->elapsed; |
319 | dpcm->elapsed = 0; | |
b142037b | 320 | spin_unlock_irqrestore(&dpcm->lock, flags); |
b5d10781 TI |
321 | if (elapsed) |
322 | snd_pcm_period_elapsed(dpcm->substream); | |
1da177e4 LT |
323 | } |
324 | ||
c631d03c TI |
325 | static snd_pcm_uframes_t |
326 | dummy_systimer_pointer(struct snd_pcm_substream *substream) | |
1da177e4 | 327 | { |
b142037b | 328 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
b5d10781 | 329 | snd_pcm_uframes_t pos; |
1da177e4 | 330 | |
b142037b TI |
331 | spin_lock(&dpcm->lock); |
332 | dummy_systimer_update(dpcm); | |
b5d10781 | 333 | pos = dpcm->frac_pos / HZ; |
b142037b | 334 | spin_unlock(&dpcm->lock); |
b5d10781 | 335 | return pos; |
1da177e4 LT |
336 | } |
337 | ||
c631d03c | 338 | static int dummy_systimer_create(struct snd_pcm_substream *substream) |
1da177e4 | 339 | { |
c631d03c TI |
340 | struct dummy_systimer_pcm *dpcm; |
341 | ||
342 | dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); | |
343 | if (!dpcm) | |
344 | return -ENOMEM; | |
345 | substream->runtime->private_data = dpcm; | |
bc47ba90 | 346 | timer_setup(&dpcm->timer, dummy_systimer_callback, 0); |
c631d03c TI |
347 | spin_lock_init(&dpcm->lock); |
348 | dpcm->substream = substream; | |
349 | return 0; | |
350 | } | |
351 | ||
352 | static void dummy_systimer_free(struct snd_pcm_substream *substream) | |
353 | { | |
354 | kfree(substream->runtime->private_data); | |
355 | } | |
356 | ||
d8c5ed75 | 357 | static const struct dummy_timer_ops dummy_systimer_ops = { |
c631d03c TI |
358 | .create = dummy_systimer_create, |
359 | .free = dummy_systimer_free, | |
360 | .prepare = dummy_systimer_prepare, | |
361 | .start = dummy_systimer_start, | |
362 | .stop = dummy_systimer_stop, | |
363 | .pointer = dummy_systimer_pointer, | |
1da177e4 LT |
364 | }; |
365 | ||
c631d03c TI |
366 | #ifdef CONFIG_HIGH_RES_TIMERS |
367 | /* | |
368 | * hrtimer interface | |
369 | */ | |
370 | ||
371 | struct dummy_hrtimer_pcm { | |
ddce57a6 TI |
372 | /* ops must be the first item */ |
373 | const struct dummy_timer_ops *timer_ops; | |
c631d03c TI |
374 | ktime_t base_time; |
375 | ktime_t period_time; | |
376 | atomic_t running; | |
377 | struct hrtimer timer; | |
378 | struct tasklet_struct tasklet; | |
379 | struct snd_pcm_substream *substream; | |
380 | }; | |
381 | ||
382 | static void dummy_hrtimer_pcm_elapsed(unsigned long priv) | |
383 | { | |
384 | struct dummy_hrtimer_pcm *dpcm = (struct dummy_hrtimer_pcm *)priv; | |
385 | if (atomic_read(&dpcm->running)) | |
386 | snd_pcm_period_elapsed(dpcm->substream); | |
387 | } | |
388 | ||
389 | static enum hrtimer_restart dummy_hrtimer_callback(struct hrtimer *timer) | |
390 | { | |
391 | struct dummy_hrtimer_pcm *dpcm; | |
392 | ||
393 | dpcm = container_of(timer, struct dummy_hrtimer_pcm, timer); | |
394 | if (!atomic_read(&dpcm->running)) | |
395 | return HRTIMER_NORESTART; | |
396 | tasklet_schedule(&dpcm->tasklet); | |
397 | hrtimer_forward_now(timer, dpcm->period_time); | |
398 | return HRTIMER_RESTART; | |
399 | } | |
400 | ||
401 | static int dummy_hrtimer_start(struct snd_pcm_substream *substream) | |
402 | { | |
403 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; | |
404 | ||
405 | dpcm->base_time = hrtimer_cb_get_time(&dpcm->timer); | |
406 | hrtimer_start(&dpcm->timer, dpcm->period_time, HRTIMER_MODE_REL); | |
407 | atomic_set(&dpcm->running, 1); | |
408 | return 0; | |
409 | } | |
410 | ||
411 | static int dummy_hrtimer_stop(struct snd_pcm_substream *substream) | |
412 | { | |
413 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; | |
414 | ||
415 | atomic_set(&dpcm->running, 0); | |
416 | hrtimer_cancel(&dpcm->timer); | |
417 | return 0; | |
418 | } | |
419 | ||
420 | static inline void dummy_hrtimer_sync(struct dummy_hrtimer_pcm *dpcm) | |
421 | { | |
d5dbbe65 | 422 | hrtimer_cancel(&dpcm->timer); |
c631d03c TI |
423 | tasklet_kill(&dpcm->tasklet); |
424 | } | |
425 | ||
426 | static snd_pcm_uframes_t | |
427 | dummy_hrtimer_pointer(struct snd_pcm_substream *substream) | |
428 | { | |
429 | struct snd_pcm_runtime *runtime = substream->runtime; | |
430 | struct dummy_hrtimer_pcm *dpcm = runtime->private_data; | |
431 | u64 delta; | |
432 | u32 pos; | |
433 | ||
434 | delta = ktime_us_delta(hrtimer_cb_get_time(&dpcm->timer), | |
435 | dpcm->base_time); | |
436 | delta = div_u64(delta * runtime->rate + 999999, 1000000); | |
437 | div_u64_rem(delta, runtime->buffer_size, &pos); | |
438 | return pos; | |
439 | } | |
440 | ||
441 | static int dummy_hrtimer_prepare(struct snd_pcm_substream *substream) | |
1da177e4 | 442 | { |
c631d03c TI |
443 | struct snd_pcm_runtime *runtime = substream->runtime; |
444 | struct dummy_hrtimer_pcm *dpcm = runtime->private_data; | |
445 | unsigned int period, rate; | |
446 | long sec; | |
447 | unsigned long nsecs; | |
448 | ||
449 | dummy_hrtimer_sync(dpcm); | |
450 | period = runtime->period_size; | |
451 | rate = runtime->rate; | |
452 | sec = period / rate; | |
453 | period %= rate; | |
454 | nsecs = div_u64((u64)period * 1000000000UL + rate - 1, rate); | |
455 | dpcm->period_time = ktime_set(sec, nsecs); | |
456 | ||
457 | return 0; | |
458 | } | |
459 | ||
460 | static int dummy_hrtimer_create(struct snd_pcm_substream *substream) | |
461 | { | |
462 | struct dummy_hrtimer_pcm *dpcm; | |
463 | ||
464 | dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); | |
465 | if (!dpcm) | |
466 | return -ENOMEM; | |
467 | substream->runtime->private_data = dpcm; | |
468 | hrtimer_init(&dpcm->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); | |
469 | dpcm->timer.function = dummy_hrtimer_callback; | |
470 | dpcm->substream = substream; | |
471 | atomic_set(&dpcm->running, 0); | |
472 | tasklet_init(&dpcm->tasklet, dummy_hrtimer_pcm_elapsed, | |
473 | (unsigned long)dpcm); | |
474 | return 0; | |
475 | } | |
476 | ||
477 | static void dummy_hrtimer_free(struct snd_pcm_substream *substream) | |
478 | { | |
479 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; | |
480 | dummy_hrtimer_sync(dpcm); | |
481 | kfree(dpcm); | |
482 | } | |
483 | ||
d8c5ed75 | 484 | static const struct dummy_timer_ops dummy_hrtimer_ops = { |
c631d03c TI |
485 | .create = dummy_hrtimer_create, |
486 | .free = dummy_hrtimer_free, | |
487 | .prepare = dummy_hrtimer_prepare, | |
488 | .start = dummy_hrtimer_start, | |
489 | .stop = dummy_hrtimer_stop, | |
490 | .pointer = dummy_hrtimer_pointer, | |
491 | }; | |
492 | ||
493 | #endif /* CONFIG_HIGH_RES_TIMERS */ | |
494 | ||
495 | /* | |
496 | * PCM interface | |
497 | */ | |
498 | ||
499 | static int dummy_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
500 | { | |
c631d03c TI |
501 | switch (cmd) { |
502 | case SNDRV_PCM_TRIGGER_START: | |
503 | case SNDRV_PCM_TRIGGER_RESUME: | |
ddce57a6 | 504 | return get_dummy_ops(substream)->start(substream); |
c631d03c TI |
505 | case SNDRV_PCM_TRIGGER_STOP: |
506 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
ddce57a6 | 507 | return get_dummy_ops(substream)->stop(substream); |
c631d03c TI |
508 | } |
509 | return -EINVAL; | |
510 | } | |
511 | ||
512 | static int dummy_pcm_prepare(struct snd_pcm_substream *substream) | |
513 | { | |
ddce57a6 | 514 | return get_dummy_ops(substream)->prepare(substream); |
c631d03c TI |
515 | } |
516 | ||
517 | static snd_pcm_uframes_t dummy_pcm_pointer(struct snd_pcm_substream *substream) | |
518 | { | |
ddce57a6 | 519 | return get_dummy_ops(substream)->pointer(substream); |
c631d03c TI |
520 | } |
521 | ||
b6c0b715 | 522 | static const struct snd_pcm_hardware dummy_pcm_hardware = { |
c631d03c TI |
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; |
ddce57a6 | 565 | const struct dummy_timer_ops *ops; |
c8eb6ba1 TI |
566 | int err; |
567 | ||
ddce57a6 | 568 | ops = &dummy_systimer_ops; |
c631d03c TI |
569 | #ifdef CONFIG_HIGH_RES_TIMERS |
570 | if (hrtimer) | |
ddce57a6 | 571 | ops = &dummy_hrtimer_ops; |
c631d03c TI |
572 | #endif |
573 | ||
ddce57a6 | 574 | err = ops->create(substream); |
1a11cb64 | 575 | if (err < 0) |
1da177e4 | 576 | return err; |
ddce57a6 | 577 | get_dummy_ops(substream) = ops; |
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 | 598 | if (err < 0) { |
ddce57a6 | 599 | get_dummy_ops(substream)->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 | { |
ddce57a6 | 607 | get_dummy_ops(substream)->free(substream); |
1da177e4 LT |
608 | return 0; |
609 | } | |
610 | ||
a68c4d11 TI |
611 | /* |
612 | * dummy buffer handling | |
613 | */ | |
614 | ||
615 | static void *dummy_page[2]; | |
616 | ||
617 | static void free_fake_buffer(void) | |
618 | { | |
619 | if (fake_buffer) { | |
620 | int i; | |
621 | for (i = 0; i < 2; i++) | |
622 | if (dummy_page[i]) { | |
623 | free_page((unsigned long)dummy_page[i]); | |
624 | dummy_page[i] = NULL; | |
625 | } | |
626 | } | |
627 | } | |
628 | ||
629 | static int alloc_fake_buffer(void) | |
630 | { | |
631 | int i; | |
632 | ||
633 | if (!fake_buffer) | |
634 | return 0; | |
635 | for (i = 0; i < 2; i++) { | |
636 | dummy_page[i] = (void *)get_zeroed_page(GFP_KERNEL); | |
637 | if (!dummy_page[i]) { | |
638 | free_fake_buffer(); | |
639 | return -ENOMEM; | |
640 | } | |
641 | } | |
642 | return 0; | |
643 | } | |
644 | ||
645 | static int dummy_pcm_copy(struct snd_pcm_substream *substream, | |
d53611d2 TI |
646 | int channel, unsigned long pos, |
647 | void __user *dst, unsigned long bytes) | |
648 | { | |
649 | return 0; /* do nothing */ | |
650 | } | |
651 | ||
652 | static int dummy_pcm_copy_kernel(struct snd_pcm_substream *substream, | |
653 | int channel, unsigned long pos, | |
654 | void *dst, unsigned long bytes) | |
a68c4d11 TI |
655 | { |
656 | return 0; /* do nothing */ | |
657 | } | |
658 | ||
659 | static int dummy_pcm_silence(struct snd_pcm_substream *substream, | |
d53611d2 TI |
660 | int channel, unsigned long pos, |
661 | unsigned long bytes) | |
a68c4d11 TI |
662 | { |
663 | return 0; /* do nothing */ | |
664 | } | |
665 | ||
666 | static struct page *dummy_pcm_page(struct snd_pcm_substream *substream, | |
667 | unsigned long offset) | |
668 | { | |
669 | return virt_to_page(dummy_page[substream->stream]); /* the same page */ | |
670 | } | |
671 | ||
c631d03c TI |
672 | static struct snd_pcm_ops dummy_pcm_ops = { |
673 | .open = dummy_pcm_open, | |
674 | .close = dummy_pcm_close, | |
675 | .ioctl = snd_pcm_lib_ioctl, | |
676 | .hw_params = dummy_pcm_hw_params, | |
677 | .hw_free = dummy_pcm_hw_free, | |
678 | .prepare = dummy_pcm_prepare, | |
679 | .trigger = dummy_pcm_trigger, | |
680 | .pointer = dummy_pcm_pointer, | |
1da177e4 LT |
681 | }; |
682 | ||
a68c4d11 TI |
683 | static struct snd_pcm_ops dummy_pcm_ops_no_buf = { |
684 | .open = dummy_pcm_open, | |
685 | .close = dummy_pcm_close, | |
686 | .ioctl = snd_pcm_lib_ioctl, | |
687 | .hw_params = dummy_pcm_hw_params, | |
688 | .hw_free = dummy_pcm_hw_free, | |
689 | .prepare = dummy_pcm_prepare, | |
690 | .trigger = dummy_pcm_trigger, | |
691 | .pointer = dummy_pcm_pointer, | |
d53611d2 TI |
692 | .copy_user = dummy_pcm_copy, |
693 | .copy_kernel = dummy_pcm_copy_kernel, | |
694 | .fill_silence = dummy_pcm_silence, | |
a68c4d11 TI |
695 | .page = dummy_pcm_page, |
696 | }; | |
697 | ||
fbbb01a1 BP |
698 | static int snd_card_dummy_pcm(struct snd_dummy *dummy, int device, |
699 | int substreams) | |
1da177e4 | 700 | { |
4a4d2cfd | 701 | struct snd_pcm *pcm; |
a68c4d11 | 702 | struct snd_pcm_ops *ops; |
1da177e4 LT |
703 | int err; |
704 | ||
1a11cb64 JK |
705 | err = snd_pcm_new(dummy->card, "Dummy PCM", device, |
706 | substreams, substreams, &pcm); | |
707 | if (err < 0) | |
1da177e4 | 708 | return err; |
6e65c1cc | 709 | dummy->pcm = pcm; |
a68c4d11 TI |
710 | if (fake_buffer) |
711 | ops = &dummy_pcm_ops_no_buf; | |
712 | else | |
713 | ops = &dummy_pcm_ops; | |
714 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, ops); | |
715 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, ops); | |
1da177e4 LT |
716 | pcm->private_data = dummy; |
717 | pcm->info_flags = 0; | |
718 | strcpy(pcm->name, "Dummy PCM"); | |
a68c4d11 TI |
719 | if (!fake_buffer) { |
720 | snd_pcm_lib_preallocate_pages_for_all(pcm, | |
721 | SNDRV_DMA_TYPE_CONTINUOUS, | |
722 | snd_dma_continuous_data(GFP_KERNEL), | |
723 | 0, 64*1024); | |
724 | } | |
1da177e4 LT |
725 | return 0; |
726 | } | |
727 | ||
9b151fec TI |
728 | /* |
729 | * mixer interface | |
730 | */ | |
731 | ||
1da177e4 | 732 | #define DUMMY_VOLUME(xname, xindex, addr) \ |
fb567a8e TI |
733 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ |
734 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \ | |
735 | .name = xname, .index = xindex, \ | |
1da177e4 LT |
736 | .info = snd_dummy_volume_info, \ |
737 | .get = snd_dummy_volume_get, .put = snd_dummy_volume_put, \ | |
fb567a8e TI |
738 | .private_value = addr, \ |
739 | .tlv = { .p = db_scale_dummy } } | |
1da177e4 | 740 | |
4a4d2cfd TI |
741 | static int snd_dummy_volume_info(struct snd_kcontrol *kcontrol, |
742 | struct snd_ctl_elem_info *uinfo) | |
1da177e4 LT |
743 | { |
744 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
745 | uinfo->count = 2; | |
746 | uinfo->value.integer.min = -50; | |
747 | uinfo->value.integer.max = 100; | |
748 | return 0; | |
749 | } | |
750 | ||
4a4d2cfd TI |
751 | static int snd_dummy_volume_get(struct snd_kcontrol *kcontrol, |
752 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 753 | { |
4a4d2cfd | 754 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
755 | int addr = kcontrol->private_value; |
756 | ||
c8eb6ba1 | 757 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
758 | ucontrol->value.integer.value[0] = dummy->mixer_volume[addr][0]; |
759 | ucontrol->value.integer.value[1] = dummy->mixer_volume[addr][1]; | |
c8eb6ba1 | 760 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
761 | return 0; |
762 | } | |
763 | ||
4a4d2cfd TI |
764 | static int snd_dummy_volume_put(struct snd_kcontrol *kcontrol, |
765 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 766 | { |
4a4d2cfd | 767 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
768 | int change, addr = kcontrol->private_value; |
769 | int left, right; | |
770 | ||
771 | left = ucontrol->value.integer.value[0]; | |
772 | if (left < -50) | |
773 | left = -50; | |
774 | if (left > 100) | |
775 | left = 100; | |
776 | right = ucontrol->value.integer.value[1]; | |
777 | if (right < -50) | |
778 | right = -50; | |
779 | if (right > 100) | |
780 | right = 100; | |
c8eb6ba1 | 781 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
782 | change = dummy->mixer_volume[addr][0] != left || |
783 | dummy->mixer_volume[addr][1] != right; | |
784 | dummy->mixer_volume[addr][0] = left; | |
785 | dummy->mixer_volume[addr][1] = right; | |
c8eb6ba1 | 786 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
787 | return change; |
788 | } | |
789 | ||
0cb29ea0 | 790 | static const DECLARE_TLV_DB_SCALE(db_scale_dummy, -4500, 30, 0); |
fb567a8e | 791 | |
1da177e4 LT |
792 | #define DUMMY_CAPSRC(xname, xindex, addr) \ |
793 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ | |
794 | .info = snd_dummy_capsrc_info, \ | |
795 | .get = snd_dummy_capsrc_get, .put = snd_dummy_capsrc_put, \ | |
796 | .private_value = addr } | |
797 | ||
a5ce8890 | 798 | #define snd_dummy_capsrc_info snd_ctl_boolean_stereo_info |
1da177e4 | 799 | |
4a4d2cfd TI |
800 | static int snd_dummy_capsrc_get(struct snd_kcontrol *kcontrol, |
801 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 802 | { |
4a4d2cfd | 803 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
804 | int addr = kcontrol->private_value; |
805 | ||
c8eb6ba1 | 806 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
807 | ucontrol->value.integer.value[0] = dummy->capture_source[addr][0]; |
808 | ucontrol->value.integer.value[1] = dummy->capture_source[addr][1]; | |
c8eb6ba1 | 809 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
810 | return 0; |
811 | } | |
812 | ||
4a4d2cfd | 813 | static int snd_dummy_capsrc_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1da177e4 | 814 | { |
4a4d2cfd | 815 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
816 | int change, addr = kcontrol->private_value; |
817 | int left, right; | |
818 | ||
819 | left = ucontrol->value.integer.value[0] & 1; | |
820 | right = ucontrol->value.integer.value[1] & 1; | |
c8eb6ba1 | 821 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
822 | change = dummy->capture_source[addr][0] != left && |
823 | dummy->capture_source[addr][1] != right; | |
824 | dummy->capture_source[addr][0] = left; | |
825 | dummy->capture_source[addr][1] = right; | |
c8eb6ba1 | 826 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
827 | return change; |
828 | } | |
829 | ||
16e43467 CL |
830 | static int snd_dummy_iobox_info(struct snd_kcontrol *kcontrol, |
831 | struct snd_ctl_elem_info *info) | |
832 | { | |
833 | const char *const names[] = { "None", "CD Player" }; | |
834 | ||
835 | return snd_ctl_enum_info(info, 1, 2, names); | |
836 | } | |
837 | ||
838 | static int snd_dummy_iobox_get(struct snd_kcontrol *kcontrol, | |
839 | struct snd_ctl_elem_value *value) | |
840 | { | |
841 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); | |
842 | ||
843 | value->value.enumerated.item[0] = dummy->iobox; | |
844 | return 0; | |
845 | } | |
846 | ||
847 | static int snd_dummy_iobox_put(struct snd_kcontrol *kcontrol, | |
848 | struct snd_ctl_elem_value *value) | |
849 | { | |
850 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); | |
851 | int changed; | |
852 | ||
853 | if (value->value.enumerated.item[0] > 1) | |
854 | return -EINVAL; | |
855 | ||
856 | changed = value->value.enumerated.item[0] != dummy->iobox; | |
857 | if (changed) { | |
858 | dummy->iobox = value->value.enumerated.item[0]; | |
859 | ||
860 | if (dummy->iobox) { | |
861 | dummy->cd_volume_ctl->vd[0].access &= | |
862 | ~SNDRV_CTL_ELEM_ACCESS_INACTIVE; | |
863 | dummy->cd_switch_ctl->vd[0].access &= | |
864 | ~SNDRV_CTL_ELEM_ACCESS_INACTIVE; | |
865 | } else { | |
866 | dummy->cd_volume_ctl->vd[0].access |= | |
867 | SNDRV_CTL_ELEM_ACCESS_INACTIVE; | |
868 | dummy->cd_switch_ctl->vd[0].access |= | |
869 | SNDRV_CTL_ELEM_ACCESS_INACTIVE; | |
870 | } | |
871 | ||
872 | snd_ctl_notify(dummy->card, SNDRV_CTL_EVENT_MASK_INFO, | |
873 | &dummy->cd_volume_ctl->id); | |
874 | snd_ctl_notify(dummy->card, SNDRV_CTL_EVENT_MASK_INFO, | |
875 | &dummy->cd_switch_ctl->id); | |
876 | } | |
877 | ||
878 | return changed; | |
879 | } | |
880 | ||
4a4d2cfd | 881 | static struct snd_kcontrol_new snd_dummy_controls[] = { |
1da177e4 LT |
882 | DUMMY_VOLUME("Master Volume", 0, MIXER_ADDR_MASTER), |
883 | DUMMY_CAPSRC("Master Capture Switch", 0, MIXER_ADDR_MASTER), | |
884 | DUMMY_VOLUME("Synth Volume", 0, MIXER_ADDR_SYNTH), | |
e05d6964 | 885 | DUMMY_CAPSRC("Synth Capture Switch", 0, MIXER_ADDR_SYNTH), |
1da177e4 | 886 | DUMMY_VOLUME("Line Volume", 0, MIXER_ADDR_LINE), |
e05d6964 | 887 | DUMMY_CAPSRC("Line Capture Switch", 0, MIXER_ADDR_LINE), |
1da177e4 | 888 | DUMMY_VOLUME("Mic Volume", 0, MIXER_ADDR_MIC), |
e05d6964 | 889 | DUMMY_CAPSRC("Mic Capture Switch", 0, MIXER_ADDR_MIC), |
1da177e4 | 890 | DUMMY_VOLUME("CD Volume", 0, MIXER_ADDR_CD), |
16e43467 CL |
891 | DUMMY_CAPSRC("CD Capture Switch", 0, MIXER_ADDR_CD), |
892 | { | |
893 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
894 | .name = "External I/O Box", | |
895 | .info = snd_dummy_iobox_info, | |
896 | .get = snd_dummy_iobox_get, | |
897 | .put = snd_dummy_iobox_put, | |
898 | }, | |
1da177e4 LT |
899 | }; |
900 | ||
fbbb01a1 | 901 | static int snd_card_dummy_new_mixer(struct snd_dummy *dummy) |
1da177e4 | 902 | { |
4a4d2cfd | 903 | struct snd_card *card = dummy->card; |
16e43467 | 904 | struct snd_kcontrol *kcontrol; |
1da177e4 LT |
905 | unsigned int idx; |
906 | int err; | |
907 | ||
1da177e4 LT |
908 | spin_lock_init(&dummy->mixer_lock); |
909 | strcpy(card->mixername, "Dummy Mixer"); | |
16e43467 | 910 | dummy->iobox = 1; |
1da177e4 LT |
911 | |
912 | for (idx = 0; idx < ARRAY_SIZE(snd_dummy_controls); idx++) { | |
16e43467 CL |
913 | kcontrol = snd_ctl_new1(&snd_dummy_controls[idx], dummy); |
914 | err = snd_ctl_add(card, kcontrol); | |
1a11cb64 | 915 | if (err < 0) |
1da177e4 | 916 | return err; |
16e43467 CL |
917 | if (!strcmp(kcontrol->id.name, "CD Volume")) |
918 | dummy->cd_volume_ctl = kcontrol; | |
919 | else if (!strcmp(kcontrol->id.name, "CD Capture Switch")) | |
920 | dummy->cd_switch_ctl = kcontrol; | |
921 | ||
1da177e4 LT |
922 | } |
923 | return 0; | |
924 | } | |
925 | ||
129a4c9f | 926 | #if defined(CONFIG_SND_DEBUG) && defined(CONFIG_SND_PROC_FS) |
9b151fec TI |
927 | /* |
928 | * proc interface | |
929 | */ | |
d5e1ca05 JK |
930 | static void print_formats(struct snd_dummy *dummy, |
931 | struct snd_info_buffer *buffer) | |
9b151fec TI |
932 | { |
933 | int i; | |
934 | ||
935 | for (i = 0; i < SNDRV_PCM_FORMAT_LAST; i++) { | |
d5e1ca05 | 936 | if (dummy->pcm_hw.formats & (1ULL << i)) |
9b151fec TI |
937 | snd_iprintf(buffer, " %s", snd_pcm_format_name(i)); |
938 | } | |
939 | } | |
940 | ||
d5e1ca05 JK |
941 | static void print_rates(struct snd_dummy *dummy, |
942 | struct snd_info_buffer *buffer) | |
9b151fec TI |
943 | { |
944 | static int rates[] = { | |
945 | 5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000, | |
946 | 64000, 88200, 96000, 176400, 192000, | |
947 | }; | |
948 | int i; | |
949 | ||
d5e1ca05 | 950 | if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_CONTINUOUS) |
9b151fec | 951 | snd_iprintf(buffer, " continuous"); |
d5e1ca05 | 952 | if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_KNOT) |
9b151fec TI |
953 | snd_iprintf(buffer, " knot"); |
954 | for (i = 0; i < ARRAY_SIZE(rates); i++) | |
d5e1ca05 | 955 | if (dummy->pcm_hw.rates & (1 << i)) |
9b151fec TI |
956 | snd_iprintf(buffer, " %d", rates[i]); |
957 | } | |
958 | ||
d5e1ca05 JK |
959 | #define get_dummy_int_ptr(dummy, ofs) \ |
960 | (unsigned int *)((char *)&((dummy)->pcm_hw) + (ofs)) | |
961 | #define get_dummy_ll_ptr(dummy, ofs) \ | |
962 | (unsigned long long *)((char *)&((dummy)->pcm_hw) + (ofs)) | |
9b151fec TI |
963 | |
964 | struct dummy_hw_field { | |
965 | const char *name; | |
966 | const char *format; | |
967 | unsigned int offset; | |
968 | unsigned int size; | |
969 | }; | |
970 | #define FIELD_ENTRY(item, fmt) { \ | |
971 | .name = #item, \ | |
972 | .format = fmt, \ | |
973 | .offset = offsetof(struct snd_pcm_hardware, item), \ | |
974 | .size = sizeof(dummy_pcm_hardware.item) } | |
975 | ||
976 | static struct dummy_hw_field fields[] = { | |
977 | FIELD_ENTRY(formats, "%#llx"), | |
978 | FIELD_ENTRY(rates, "%#x"), | |
979 | FIELD_ENTRY(rate_min, "%d"), | |
980 | FIELD_ENTRY(rate_max, "%d"), | |
981 | FIELD_ENTRY(channels_min, "%d"), | |
982 | FIELD_ENTRY(channels_max, "%d"), | |
983 | FIELD_ENTRY(buffer_bytes_max, "%ld"), | |
984 | FIELD_ENTRY(period_bytes_min, "%ld"), | |
985 | FIELD_ENTRY(period_bytes_max, "%ld"), | |
986 | FIELD_ENTRY(periods_min, "%d"), | |
987 | FIELD_ENTRY(periods_max, "%d"), | |
988 | }; | |
989 | ||
990 | static void dummy_proc_read(struct snd_info_entry *entry, | |
991 | struct snd_info_buffer *buffer) | |
992 | { | |
d5e1ca05 | 993 | struct snd_dummy *dummy = entry->private_data; |
9b151fec TI |
994 | int i; |
995 | ||
996 | for (i = 0; i < ARRAY_SIZE(fields); i++) { | |
997 | snd_iprintf(buffer, "%s ", fields[i].name); | |
998 | if (fields[i].size == sizeof(int)) | |
999 | snd_iprintf(buffer, fields[i].format, | |
d5e1ca05 | 1000 | *get_dummy_int_ptr(dummy, fields[i].offset)); |
9b151fec TI |
1001 | else |
1002 | snd_iprintf(buffer, fields[i].format, | |
d5e1ca05 | 1003 | *get_dummy_ll_ptr(dummy, fields[i].offset)); |
9b151fec | 1004 | if (!strcmp(fields[i].name, "formats")) |
d5e1ca05 | 1005 | print_formats(dummy, buffer); |
9b151fec | 1006 | else if (!strcmp(fields[i].name, "rates")) |
d5e1ca05 | 1007 | print_rates(dummy, buffer); |
9b151fec TI |
1008 | snd_iprintf(buffer, "\n"); |
1009 | } | |
1010 | } | |
1011 | ||
1012 | static void dummy_proc_write(struct snd_info_entry *entry, | |
1013 | struct snd_info_buffer *buffer) | |
1014 | { | |
d5e1ca05 | 1015 | struct snd_dummy *dummy = entry->private_data; |
9b151fec TI |
1016 | char line[64]; |
1017 | ||
1018 | while (!snd_info_get_line(buffer, line, sizeof(line))) { | |
1019 | char item[20]; | |
1020 | const char *ptr; | |
1021 | unsigned long long val; | |
1022 | int i; | |
1023 | ||
1024 | ptr = snd_info_get_str(item, line, sizeof(item)); | |
1025 | for (i = 0; i < ARRAY_SIZE(fields); i++) { | |
1026 | if (!strcmp(item, fields[i].name)) | |
1027 | break; | |
1028 | } | |
1029 | if (i >= ARRAY_SIZE(fields)) | |
1030 | continue; | |
1031 | snd_info_get_str(item, ptr, sizeof(item)); | |
b785a492 | 1032 | if (kstrtoull(item, 0, &val)) |
9b151fec TI |
1033 | continue; |
1034 | if (fields[i].size == sizeof(int)) | |
d5e1ca05 | 1035 | *get_dummy_int_ptr(dummy, fields[i].offset) = val; |
9b151fec | 1036 | else |
d5e1ca05 | 1037 | *get_dummy_ll_ptr(dummy, fields[i].offset) = val; |
9b151fec TI |
1038 | } |
1039 | } | |
1040 | ||
fbbb01a1 | 1041 | static void dummy_proc_init(struct snd_dummy *chip) |
9b151fec TI |
1042 | { |
1043 | struct snd_info_entry *entry; | |
1044 | ||
1045 | if (!snd_card_proc_new(chip->card, "dummy_pcm", &entry)) { | |
1046 | snd_info_set_text_ops(entry, chip, dummy_proc_read); | |
1047 | entry->c.text.write = dummy_proc_write; | |
1048 | entry->mode |= S_IWUSR; | |
d5e1ca05 | 1049 | entry->private_data = chip; |
9b151fec TI |
1050 | } |
1051 | } | |
1052 | #else | |
1053 | #define dummy_proc_init(x) | |
129a4c9f | 1054 | #endif /* CONFIG_SND_DEBUG && CONFIG_SND_PROC_FS */ |
9b151fec | 1055 | |
fbbb01a1 | 1056 | static int snd_dummy_probe(struct platform_device *devptr) |
1da177e4 | 1057 | { |
4a4d2cfd TI |
1058 | struct snd_card *card; |
1059 | struct snd_dummy *dummy; | |
d5e1ca05 | 1060 | struct dummy_model *m = NULL, **mdl; |
1da177e4 | 1061 | int idx, err; |
6e65c1cc | 1062 | int dev = devptr->id; |
1da177e4 | 1063 | |
5872f3f6 TI |
1064 | err = snd_card_new(&devptr->dev, index[dev], id[dev], THIS_MODULE, |
1065 | sizeof(struct snd_dummy), &card); | |
bd7dd77c TI |
1066 | if (err < 0) |
1067 | return err; | |
4a4d2cfd | 1068 | dummy = card->private_data; |
1da177e4 | 1069 | dummy->card = card; |
d5e1ca05 JK |
1070 | for (mdl = dummy_models; *mdl && model[dev]; mdl++) { |
1071 | if (strcmp(model[dev], (*mdl)->name) == 0) { | |
1072 | printk(KERN_INFO | |
1073 | "snd-dummy: Using model '%s' for card %i\n", | |
1074 | (*mdl)->name, card->number); | |
1075 | m = dummy->model = *mdl; | |
1076 | break; | |
1077 | } | |
1078 | } | |
1da177e4 LT |
1079 | for (idx = 0; idx < MAX_PCM_DEVICES && idx < pcm_devs[dev]; idx++) { |
1080 | if (pcm_substreams[dev] < 1) | |
1081 | pcm_substreams[dev] = 1; | |
1082 | if (pcm_substreams[dev] > MAX_PCM_SUBSTREAMS) | |
1083 | pcm_substreams[dev] = MAX_PCM_SUBSTREAMS; | |
1a11cb64 JK |
1084 | err = snd_card_dummy_pcm(dummy, idx, pcm_substreams[dev]); |
1085 | if (err < 0) | |
1da177e4 LT |
1086 | goto __nodev; |
1087 | } | |
d5e1ca05 JK |
1088 | |
1089 | dummy->pcm_hw = dummy_pcm_hardware; | |
1090 | if (m) { | |
1091 | if (m->formats) | |
1092 | dummy->pcm_hw.formats = m->formats; | |
1093 | if (m->buffer_bytes_max) | |
1094 | dummy->pcm_hw.buffer_bytes_max = m->buffer_bytes_max; | |
1095 | if (m->period_bytes_min) | |
1096 | dummy->pcm_hw.period_bytes_min = m->period_bytes_min; | |
1097 | if (m->period_bytes_max) | |
1098 | dummy->pcm_hw.period_bytes_max = m->period_bytes_max; | |
1099 | if (m->periods_min) | |
1100 | dummy->pcm_hw.periods_min = m->periods_min; | |
1101 | if (m->periods_max) | |
1102 | dummy->pcm_hw.periods_max = m->periods_max; | |
1103 | if (m->rates) | |
1104 | dummy->pcm_hw.rates = m->rates; | |
1105 | if (m->rate_min) | |
1106 | dummy->pcm_hw.rate_min = m->rate_min; | |
1107 | if (m->rate_max) | |
1108 | dummy->pcm_hw.rate_max = m->rate_max; | |
1109 | if (m->channels_min) | |
1110 | dummy->pcm_hw.channels_min = m->channels_min; | |
1111 | if (m->channels_max) | |
1112 | dummy->pcm_hw.channels_max = m->channels_max; | |
1113 | } | |
1114 | ||
1a11cb64 JK |
1115 | err = snd_card_dummy_new_mixer(dummy); |
1116 | if (err < 0) | |
1da177e4 LT |
1117 | goto __nodev; |
1118 | strcpy(card->driver, "Dummy"); | |
1119 | strcpy(card->shortname, "Dummy"); | |
1120 | sprintf(card->longname, "Dummy %i", dev + 1); | |
16dab54b | 1121 | |
9b151fec TI |
1122 | dummy_proc_init(dummy); |
1123 | ||
1a11cb64 JK |
1124 | err = snd_card_register(card); |
1125 | if (err == 0) { | |
6e65c1cc | 1126 | platform_set_drvdata(devptr, card); |
1da177e4 LT |
1127 | return 0; |
1128 | } | |
1129 | __nodev: | |
1130 | snd_card_free(card); | |
1131 | return err; | |
1132 | } | |
1133 | ||
fbbb01a1 | 1134 | static int snd_dummy_remove(struct platform_device *devptr) |
6e65c1cc TI |
1135 | { |
1136 | snd_card_free(platform_get_drvdata(devptr)); | |
6e65c1cc TI |
1137 | return 0; |
1138 | } | |
1139 | ||
d34e4e00 | 1140 | #ifdef CONFIG_PM_SLEEP |
284e7ca7 | 1141 | static int snd_dummy_suspend(struct device *pdev) |
1da177e4 | 1142 | { |
284e7ca7 | 1143 | struct snd_card *card = dev_get_drvdata(pdev); |
6e65c1cc | 1144 | struct snd_dummy *dummy = card->private_data; |
1da177e4 | 1145 | |
6e65c1cc TI |
1146 | snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
1147 | snd_pcm_suspend_all(dummy->pcm); | |
1148 | return 0; | |
1149 | } | |
1150 | ||
284e7ca7 | 1151 | static int snd_dummy_resume(struct device *pdev) |
6e65c1cc | 1152 | { |
284e7ca7 | 1153 | struct snd_card *card = dev_get_drvdata(pdev); |
6e65c1cc TI |
1154 | |
1155 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); | |
1156 | return 0; | |
1157 | } | |
284e7ca7 TI |
1158 | |
1159 | static SIMPLE_DEV_PM_OPS(snd_dummy_pm, snd_dummy_suspend, snd_dummy_resume); | |
1160 | #define SND_DUMMY_PM_OPS &snd_dummy_pm | |
1161 | #else | |
1162 | #define SND_DUMMY_PM_OPS NULL | |
6e65c1cc TI |
1163 | #endif |
1164 | ||
1165 | #define SND_DUMMY_DRIVER "snd_dummy" | |
1166 | ||
1167 | static struct platform_driver snd_dummy_driver = { | |
1168 | .probe = snd_dummy_probe, | |
fbbb01a1 | 1169 | .remove = snd_dummy_remove, |
6e65c1cc | 1170 | .driver = { |
8bf01d8a | 1171 | .name = SND_DUMMY_DRIVER, |
284e7ca7 | 1172 | .pm = SND_DUMMY_PM_OPS, |
6e65c1cc TI |
1173 | }, |
1174 | }; | |
1175 | ||
c12aad6e | 1176 | static void snd_dummy_unregister_all(void) |
f7a9275d CL |
1177 | { |
1178 | int i; | |
1179 | ||
1180 | for (i = 0; i < ARRAY_SIZE(devices); ++i) | |
1181 | platform_device_unregister(devices[i]); | |
1182 | platform_driver_unregister(&snd_dummy_driver); | |
a68c4d11 | 1183 | free_fake_buffer(); |
f7a9275d CL |
1184 | } |
1185 | ||
6e65c1cc TI |
1186 | static int __init alsa_card_dummy_init(void) |
1187 | { | |
1188 | int i, cards, err; | |
1189 | ||
1a11cb64 JK |
1190 | err = platform_driver_register(&snd_dummy_driver); |
1191 | if (err < 0) | |
6e65c1cc TI |
1192 | return err; |
1193 | ||
a68c4d11 TI |
1194 | err = alloc_fake_buffer(); |
1195 | if (err < 0) { | |
1196 | platform_driver_unregister(&snd_dummy_driver); | |
1197 | return err; | |
1198 | } | |
1199 | ||
6e65c1cc | 1200 | cards = 0; |
8278ca8f | 1201 | for (i = 0; i < SNDRV_CARDS; i++) { |
6e65c1cc | 1202 | struct platform_device *device; |
8278ca8f TI |
1203 | if (! enable[i]) |
1204 | continue; | |
6e65c1cc TI |
1205 | device = platform_device_register_simple(SND_DUMMY_DRIVER, |
1206 | i, NULL, 0); | |
a182ee98 RH |
1207 | if (IS_ERR(device)) |
1208 | continue; | |
7152447d RH |
1209 | if (!platform_get_drvdata(device)) { |
1210 | platform_device_unregister(device); | |
1211 | continue; | |
1212 | } | |
f7a9275d | 1213 | devices[i] = device; |
1da177e4 LT |
1214 | cards++; |
1215 | } | |
1216 | if (!cards) { | |
1217 | #ifdef MODULE | |
1218 | printk(KERN_ERR "Dummy soundcard not found or device busy\n"); | |
1219 | #endif | |
a182ee98 RH |
1220 | snd_dummy_unregister_all(); |
1221 | return -ENODEV; | |
1da177e4 LT |
1222 | } |
1223 | return 0; | |
1224 | } | |
1225 | ||
1226 | static void __exit alsa_card_dummy_exit(void) | |
1227 | { | |
f7a9275d | 1228 | snd_dummy_unregister_all(); |
1da177e4 LT |
1229 | } |
1230 | ||
1231 | module_init(alsa_card_dummy_init) | |
1232 | module_exit(alsa_card_dummy_exit) |