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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * Dummy soundcard | |
c1017a4c | 4 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
1da177e4 LT |
5 | */ |
6 | ||
1da177e4 | 7 | #include <linux/init.h> |
6e65c1cc TI |
8 | #include <linux/err.h> |
9 | #include <linux/platform_device.h> | |
1da177e4 LT |
10 | #include <linux/jiffies.h> |
11 | #include <linux/slab.h> | |
12 | #include <linux/time.h> | |
13 | #include <linux/wait.h> | |
c631d03c TI |
14 | #include <linux/hrtimer.h> |
15 | #include <linux/math64.h> | |
65a77217 | 16 | #include <linux/module.h> |
1da177e4 LT |
17 | #include <sound/core.h> |
18 | #include <sound/control.h> | |
fb567a8e | 19 | #include <sound/tlv.h> |
1da177e4 LT |
20 | #include <sound/pcm.h> |
21 | #include <sound/rawmidi.h> | |
9b151fec | 22 | #include <sound/info.h> |
1da177e4 LT |
23 | #include <sound/initval.h> |
24 | ||
c1017a4c | 25 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); |
1da177e4 LT |
26 | MODULE_DESCRIPTION("Dummy soundcard (/dev/null)"); |
27 | MODULE_LICENSE("GPL"); | |
28 | MODULE_SUPPORTED_DEVICE("{{ALSA,Dummy soundcard}}"); | |
29 | ||
30 | #define MAX_PCM_DEVICES 4 | |
b888d1ce | 31 | #define MAX_PCM_SUBSTREAMS 128 |
1da177e4 LT |
32 | #define MAX_MIDI_DEVICES 2 |
33 | ||
1da177e4 | 34 | /* defaults */ |
1da177e4 | 35 | #define MAX_BUFFER_SIZE (64*1024) |
d5e1ca05 | 36 | #define MIN_PERIOD_SIZE 64 |
2ad5dd8d | 37 | #define MAX_PERIOD_SIZE MAX_BUFFER_SIZE |
1da177e4 | 38 | #define USE_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE) |
1da177e4 LT |
39 | #define USE_RATE SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000 |
40 | #define USE_RATE_MIN 5500 | |
41 | #define USE_RATE_MAX 48000 | |
1da177e4 | 42 | #define USE_CHANNELS_MIN 1 |
1da177e4 | 43 | #define USE_CHANNELS_MAX 2 |
1da177e4 | 44 | #define USE_PERIODS_MIN 1 |
1da177e4 | 45 | #define USE_PERIODS_MAX 1024 |
1da177e4 LT |
46 | |
47 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ | |
48 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ | |
a67ff6a5 | 49 | static bool enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0}; |
d5e1ca05 | 50 | static char *model[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = NULL}; |
1da177e4 LT |
51 | static int pcm_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1}; |
52 | static int pcm_substreams[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 8}; | |
53 | //static int midi_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2}; | |
c631d03c | 54 | #ifdef CONFIG_HIGH_RES_TIMERS |
a67ff6a5 | 55 | static bool hrtimer = 1; |
c631d03c | 56 | #endif |
a67ff6a5 | 57 | static bool fake_buffer = 1; |
1da177e4 LT |
58 | |
59 | module_param_array(index, int, NULL, 0444); | |
60 | MODULE_PARM_DESC(index, "Index value for dummy soundcard."); | |
61 | module_param_array(id, charp, NULL, 0444); | |
62 | MODULE_PARM_DESC(id, "ID string for dummy soundcard."); | |
63 | module_param_array(enable, bool, NULL, 0444); | |
64 | MODULE_PARM_DESC(enable, "Enable this dummy soundcard."); | |
d5e1ca05 JK |
65 | module_param_array(model, charp, NULL, 0444); |
66 | MODULE_PARM_DESC(model, "Soundcard model."); | |
1da177e4 LT |
67 | module_param_array(pcm_devs, int, NULL, 0444); |
68 | MODULE_PARM_DESC(pcm_devs, "PCM devices # (0-4) for dummy driver."); | |
69 | module_param_array(pcm_substreams, int, NULL, 0444); | |
23aebca4 | 70 | MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-128) for dummy driver."); |
1da177e4 LT |
71 | //module_param_array(midi_devs, int, NULL, 0444); |
72 | //MODULE_PARM_DESC(midi_devs, "MIDI devices # (0-2) for dummy driver."); | |
a68c4d11 TI |
73 | module_param(fake_buffer, bool, 0444); |
74 | MODULE_PARM_DESC(fake_buffer, "Fake buffer allocations."); | |
c631d03c | 75 | #ifdef CONFIG_HIGH_RES_TIMERS |
ddce57a6 | 76 | module_param(hrtimer, bool, 0644); |
c631d03c TI |
77 | MODULE_PARM_DESC(hrtimer, "Use hrtimer as the timer source."); |
78 | #endif | |
1da177e4 | 79 | |
f7a9275d CL |
80 | static struct platform_device *devices[SNDRV_CARDS]; |
81 | ||
1da177e4 LT |
82 | #define MIXER_ADDR_MASTER 0 |
83 | #define MIXER_ADDR_LINE 1 | |
84 | #define MIXER_ADDR_MIC 2 | |
85 | #define MIXER_ADDR_SYNTH 3 | |
86 | #define MIXER_ADDR_CD 4 | |
87 | #define MIXER_ADDR_LAST 4 | |
88 | ||
c631d03c TI |
89 | struct dummy_timer_ops { |
90 | int (*create)(struct snd_pcm_substream *); | |
91 | void (*free)(struct snd_pcm_substream *); | |
92 | int (*prepare)(struct snd_pcm_substream *); | |
93 | int (*start)(struct snd_pcm_substream *); | |
94 | int (*stop)(struct snd_pcm_substream *); | |
95 | snd_pcm_uframes_t (*pointer)(struct snd_pcm_substream *); | |
96 | }; | |
97 | ||
ddce57a6 TI |
98 | #define get_dummy_ops(substream) \ |
99 | (*(const struct dummy_timer_ops **)(substream)->runtime->private_data) | |
100 | ||
d5e1ca05 JK |
101 | struct dummy_model { |
102 | const char *name; | |
103 | int (*playback_constraints)(struct snd_pcm_runtime *runtime); | |
104 | int (*capture_constraints)(struct snd_pcm_runtime *runtime); | |
105 | u64 formats; | |
106 | size_t buffer_bytes_max; | |
107 | size_t period_bytes_min; | |
108 | size_t period_bytes_max; | |
109 | unsigned int periods_min; | |
110 | unsigned int periods_max; | |
111 | unsigned int rates; | |
112 | unsigned int rate_min; | |
113 | unsigned int rate_max; | |
114 | unsigned int channels_min; | |
115 | unsigned int channels_max; | |
116 | }; | |
117 | ||
4a4d2cfd TI |
118 | struct snd_dummy { |
119 | struct snd_card *card; | |
d5e1ca05 | 120 | struct dummy_model *model; |
6e65c1cc | 121 | struct snd_pcm *pcm; |
d5e1ca05 | 122 | struct snd_pcm_hardware pcm_hw; |
1da177e4 LT |
123 | spinlock_t mixer_lock; |
124 | int mixer_volume[MIXER_ADDR_LAST+1][2]; | |
125 | int capture_source[MIXER_ADDR_LAST+1][2]; | |
16e43467 CL |
126 | int iobox; |
127 | struct snd_kcontrol *cd_volume_ctl; | |
128 | struct snd_kcontrol *cd_switch_ctl; | |
4a4d2cfd | 129 | }; |
1da177e4 | 130 | |
d5e1ca05 JK |
131 | /* |
132 | * card models | |
133 | */ | |
134 | ||
135 | static int emu10k1_playback_constraints(struct snd_pcm_runtime *runtime) | |
136 | { | |
137 | int err; | |
138 | err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); | |
139 | if (err < 0) | |
140 | return err; | |
141 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 256, UINT_MAX); | |
142 | if (err < 0) | |
143 | return err; | |
144 | return 0; | |
145 | } | |
146 | ||
e4c28688 | 147 | static struct dummy_model model_emu10k1 = { |
d5e1ca05 JK |
148 | .name = "emu10k1", |
149 | .playback_constraints = emu10k1_playback_constraints, | |
150 | .buffer_bytes_max = 128 * 1024, | |
151 | }; | |
152 | ||
e4c28688 | 153 | static struct dummy_model model_rme9652 = { |
d5e1ca05 JK |
154 | .name = "rme9652", |
155 | .buffer_bytes_max = 26 * 64 * 1024, | |
156 | .formats = SNDRV_PCM_FMTBIT_S32_LE, | |
157 | .channels_min = 26, | |
158 | .channels_max = 26, | |
159 | .periods_min = 2, | |
160 | .periods_max = 2, | |
161 | }; | |
162 | ||
e4c28688 | 163 | static struct dummy_model model_ice1712 = { |
d5e1ca05 JK |
164 | .name = "ice1712", |
165 | .buffer_bytes_max = 256 * 1024, | |
166 | .formats = SNDRV_PCM_FMTBIT_S32_LE, | |
167 | .channels_min = 10, | |
168 | .channels_max = 10, | |
169 | .periods_min = 1, | |
170 | .periods_max = 1024, | |
171 | }; | |
172 | ||
e4c28688 | 173 | static struct dummy_model model_uda1341 = { |
d5e1ca05 JK |
174 | .name = "uda1341", |
175 | .buffer_bytes_max = 16380, | |
176 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
177 | .channels_min = 2, | |
178 | .channels_max = 2, | |
179 | .periods_min = 2, | |
180 | .periods_max = 255, | |
181 | }; | |
182 | ||
e4c28688 | 183 | static struct dummy_model model_ac97 = { |
d5e1ca05 JK |
184 | .name = "ac97", |
185 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
186 | .channels_min = 2, | |
187 | .channels_max = 2, | |
188 | .rates = SNDRV_PCM_RATE_48000, | |
189 | .rate_min = 48000, | |
190 | .rate_max = 48000, | |
191 | }; | |
192 | ||
e4c28688 | 193 | static struct dummy_model model_ca0106 = { |
d5e1ca05 JK |
194 | .name = "ca0106", |
195 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
196 | .buffer_bytes_max = ((65536-64)*8), | |
197 | .period_bytes_max = (65536-64), | |
198 | .periods_min = 2, | |
199 | .periods_max = 8, | |
200 | .channels_min = 2, | |
201 | .channels_max = 2, | |
202 | .rates = SNDRV_PCM_RATE_48000|SNDRV_PCM_RATE_96000|SNDRV_PCM_RATE_192000, | |
203 | .rate_min = 48000, | |
204 | .rate_max = 192000, | |
205 | }; | |
206 | ||
e4c28688 | 207 | static struct dummy_model *dummy_models[] = { |
d5e1ca05 JK |
208 | &model_emu10k1, |
209 | &model_rme9652, | |
210 | &model_ice1712, | |
211 | &model_uda1341, | |
212 | &model_ac97, | |
213 | &model_ca0106, | |
214 | NULL | |
215 | }; | |
216 | ||
c631d03c TI |
217 | /* |
218 | * system timer interface | |
219 | */ | |
220 | ||
221 | struct dummy_systimer_pcm { | |
ddce57a6 TI |
222 | /* ops must be the first item */ |
223 | const struct dummy_timer_ops *timer_ops; | |
1da177e4 LT |
224 | spinlock_t lock; |
225 | struct timer_list timer; | |
b142037b TI |
226 | unsigned long base_time; |
227 | unsigned int frac_pos; /* fractional sample position (based HZ) */ | |
b5d10781 | 228 | unsigned int frac_period_rest; |
b142037b TI |
229 | unsigned int frac_buffer_size; /* buffer_size * HZ */ |
230 | unsigned int frac_period_size; /* period_size * HZ */ | |
231 | unsigned int rate; | |
b5d10781 | 232 | int elapsed; |
4a4d2cfd TI |
233 | struct snd_pcm_substream *substream; |
234 | }; | |
1da177e4 | 235 | |
b142037b TI |
236 | static void dummy_systimer_rearm(struct dummy_systimer_pcm *dpcm) |
237 | { | |
2a52b6ee RK |
238 | mod_timer(&dpcm->timer, jiffies + |
239 | (dpcm->frac_period_rest + dpcm->rate - 1) / dpcm->rate); | |
b142037b TI |
240 | } |
241 | ||
242 | static void dummy_systimer_update(struct dummy_systimer_pcm *dpcm) | |
243 | { | |
244 | unsigned long delta; | |
245 | ||
246 | delta = jiffies - dpcm->base_time; | |
247 | if (!delta) | |
248 | return; | |
b5d10781 TI |
249 | dpcm->base_time += delta; |
250 | delta *= dpcm->rate; | |
251 | dpcm->frac_pos += delta; | |
b142037b TI |
252 | while (dpcm->frac_pos >= dpcm->frac_buffer_size) |
253 | dpcm->frac_pos -= dpcm->frac_buffer_size; | |
b5d10781 TI |
254 | while (dpcm->frac_period_rest <= delta) { |
255 | dpcm->elapsed++; | |
256 | dpcm->frac_period_rest += dpcm->frac_period_size; | |
257 | } | |
258 | dpcm->frac_period_rest -= delta; | |
b142037b TI |
259 | } |
260 | ||
c631d03c | 261 | static int dummy_systimer_start(struct snd_pcm_substream *substream) |
1da177e4 | 262 | { |
c631d03c TI |
263 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
264 | spin_lock(&dpcm->lock); | |
b142037b TI |
265 | dpcm->base_time = jiffies; |
266 | dummy_systimer_rearm(dpcm); | |
c631d03c TI |
267 | spin_unlock(&dpcm->lock); |
268 | return 0; | |
1da177e4 LT |
269 | } |
270 | ||
c631d03c | 271 | static int dummy_systimer_stop(struct snd_pcm_substream *substream) |
1da177e4 | 272 | { |
c631d03c | 273 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
c8eb6ba1 | 274 | spin_lock(&dpcm->lock); |
c631d03c | 275 | del_timer(&dpcm->timer); |
c8eb6ba1 | 276 | spin_unlock(&dpcm->lock); |
6e65c1cc | 277 | return 0; |
1da177e4 LT |
278 | } |
279 | ||
c631d03c | 280 | static int dummy_systimer_prepare(struct snd_pcm_substream *substream) |
1da177e4 | 281 | { |
4a4d2cfd | 282 | struct snd_pcm_runtime *runtime = substream->runtime; |
c631d03c | 283 | struct dummy_systimer_pcm *dpcm = runtime->private_data; |
369b240d | 284 | |
b142037b TI |
285 | dpcm->frac_pos = 0; |
286 | dpcm->rate = runtime->rate; | |
287 | dpcm->frac_buffer_size = runtime->buffer_size * HZ; | |
288 | dpcm->frac_period_size = runtime->period_size * HZ; | |
b5d10781 TI |
289 | dpcm->frac_period_rest = dpcm->frac_period_size; |
290 | dpcm->elapsed = 0; | |
53463a83 | 291 | |
1da177e4 LT |
292 | return 0; |
293 | } | |
294 | ||
bc47ba90 | 295 | static void dummy_systimer_callback(struct timer_list *t) |
1da177e4 | 296 | { |
bc47ba90 | 297 | struct dummy_systimer_pcm *dpcm = from_timer(dpcm, t, timer); |
b32425ac | 298 | unsigned long flags; |
b5d10781 | 299 | int elapsed = 0; |
1da177e4 | 300 | |
b32425ac | 301 | spin_lock_irqsave(&dpcm->lock, flags); |
b142037b TI |
302 | dummy_systimer_update(dpcm); |
303 | dummy_systimer_rearm(dpcm); | |
b5d10781 TI |
304 | elapsed = dpcm->elapsed; |
305 | dpcm->elapsed = 0; | |
b142037b | 306 | spin_unlock_irqrestore(&dpcm->lock, flags); |
b5d10781 TI |
307 | if (elapsed) |
308 | snd_pcm_period_elapsed(dpcm->substream); | |
1da177e4 LT |
309 | } |
310 | ||
c631d03c TI |
311 | static snd_pcm_uframes_t |
312 | dummy_systimer_pointer(struct snd_pcm_substream *substream) | |
1da177e4 | 313 | { |
b142037b | 314 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
b5d10781 | 315 | snd_pcm_uframes_t pos; |
1da177e4 | 316 | |
b142037b TI |
317 | spin_lock(&dpcm->lock); |
318 | dummy_systimer_update(dpcm); | |
b5d10781 | 319 | pos = dpcm->frac_pos / HZ; |
b142037b | 320 | spin_unlock(&dpcm->lock); |
b5d10781 | 321 | return pos; |
1da177e4 LT |
322 | } |
323 | ||
c631d03c | 324 | static int dummy_systimer_create(struct snd_pcm_substream *substream) |
1da177e4 | 325 | { |
c631d03c TI |
326 | struct dummy_systimer_pcm *dpcm; |
327 | ||
328 | dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); | |
329 | if (!dpcm) | |
330 | return -ENOMEM; | |
331 | substream->runtime->private_data = dpcm; | |
bc47ba90 | 332 | timer_setup(&dpcm->timer, dummy_systimer_callback, 0); |
c631d03c TI |
333 | spin_lock_init(&dpcm->lock); |
334 | dpcm->substream = substream; | |
335 | return 0; | |
336 | } | |
337 | ||
338 | static void dummy_systimer_free(struct snd_pcm_substream *substream) | |
339 | { | |
340 | kfree(substream->runtime->private_data); | |
341 | } | |
342 | ||
d8c5ed75 | 343 | static const struct dummy_timer_ops dummy_systimer_ops = { |
c631d03c TI |
344 | .create = dummy_systimer_create, |
345 | .free = dummy_systimer_free, | |
346 | .prepare = dummy_systimer_prepare, | |
347 | .start = dummy_systimer_start, | |
348 | .stop = dummy_systimer_stop, | |
349 | .pointer = dummy_systimer_pointer, | |
1da177e4 LT |
350 | }; |
351 | ||
c631d03c TI |
352 | #ifdef CONFIG_HIGH_RES_TIMERS |
353 | /* | |
354 | * hrtimer interface | |
355 | */ | |
356 | ||
357 | struct dummy_hrtimer_pcm { | |
ddce57a6 TI |
358 | /* ops must be the first item */ |
359 | const struct dummy_timer_ops *timer_ops; | |
c631d03c TI |
360 | ktime_t base_time; |
361 | ktime_t period_time; | |
362 | atomic_t running; | |
363 | struct hrtimer timer; | |
c631d03c TI |
364 | struct snd_pcm_substream *substream; |
365 | }; | |
366 | ||
c631d03c TI |
367 | static enum hrtimer_restart dummy_hrtimer_callback(struct hrtimer *timer) |
368 | { | |
369 | struct dummy_hrtimer_pcm *dpcm; | |
370 | ||
371 | dpcm = container_of(timer, struct dummy_hrtimer_pcm, timer); | |
372 | if (!atomic_read(&dpcm->running)) | |
373 | return HRTIMER_NORESTART; | |
b03bbbe0 TG |
374 | /* |
375 | * In cases of XRUN and draining, this calls .trigger to stop PCM | |
376 | * substream. | |
377 | */ | |
378 | snd_pcm_period_elapsed(dpcm->substream); | |
379 | if (!atomic_read(&dpcm->running)) | |
380 | return HRTIMER_NORESTART; | |
381 | ||
c631d03c TI |
382 | hrtimer_forward_now(timer, dpcm->period_time); |
383 | return HRTIMER_RESTART; | |
384 | } | |
385 | ||
386 | static int dummy_hrtimer_start(struct snd_pcm_substream *substream) | |
387 | { | |
388 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; | |
389 | ||
390 | dpcm->base_time = hrtimer_cb_get_time(&dpcm->timer); | |
b03bbbe0 | 391 | hrtimer_start(&dpcm->timer, dpcm->period_time, HRTIMER_MODE_REL_SOFT); |
c631d03c TI |
392 | atomic_set(&dpcm->running, 1); |
393 | return 0; | |
394 | } | |
395 | ||
396 | static int dummy_hrtimer_stop(struct snd_pcm_substream *substream) | |
397 | { | |
398 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; | |
399 | ||
400 | atomic_set(&dpcm->running, 0); | |
b03bbbe0 TG |
401 | if (!hrtimer_callback_running(&dpcm->timer)) |
402 | hrtimer_cancel(&dpcm->timer); | |
c631d03c TI |
403 | return 0; |
404 | } | |
405 | ||
406 | static inline void dummy_hrtimer_sync(struct dummy_hrtimer_pcm *dpcm) | |
407 | { | |
d5dbbe65 | 408 | hrtimer_cancel(&dpcm->timer); |
c631d03c TI |
409 | } |
410 | ||
411 | static snd_pcm_uframes_t | |
412 | dummy_hrtimer_pointer(struct snd_pcm_substream *substream) | |
413 | { | |
414 | struct snd_pcm_runtime *runtime = substream->runtime; | |
415 | struct dummy_hrtimer_pcm *dpcm = runtime->private_data; | |
416 | u64 delta; | |
417 | u32 pos; | |
418 | ||
419 | delta = ktime_us_delta(hrtimer_cb_get_time(&dpcm->timer), | |
420 | dpcm->base_time); | |
421 | delta = div_u64(delta * runtime->rate + 999999, 1000000); | |
422 | div_u64_rem(delta, runtime->buffer_size, &pos); | |
423 | return pos; | |
424 | } | |
425 | ||
426 | static int dummy_hrtimer_prepare(struct snd_pcm_substream *substream) | |
1da177e4 | 427 | { |
c631d03c TI |
428 | struct snd_pcm_runtime *runtime = substream->runtime; |
429 | struct dummy_hrtimer_pcm *dpcm = runtime->private_data; | |
430 | unsigned int period, rate; | |
431 | long sec; | |
432 | unsigned long nsecs; | |
433 | ||
434 | dummy_hrtimer_sync(dpcm); | |
435 | period = runtime->period_size; | |
436 | rate = runtime->rate; | |
437 | sec = period / rate; | |
438 | period %= rate; | |
439 | nsecs = div_u64((u64)period * 1000000000UL + rate - 1, rate); | |
440 | dpcm->period_time = ktime_set(sec, nsecs); | |
441 | ||
442 | return 0; | |
443 | } | |
444 | ||
445 | static int dummy_hrtimer_create(struct snd_pcm_substream *substream) | |
446 | { | |
447 | struct dummy_hrtimer_pcm *dpcm; | |
448 | ||
449 | dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); | |
450 | if (!dpcm) | |
451 | return -ENOMEM; | |
452 | substream->runtime->private_data = dpcm; | |
b03bbbe0 | 453 | hrtimer_init(&dpcm->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_SOFT); |
c631d03c TI |
454 | dpcm->timer.function = dummy_hrtimer_callback; |
455 | dpcm->substream = substream; | |
456 | atomic_set(&dpcm->running, 0); | |
c631d03c TI |
457 | return 0; |
458 | } | |
459 | ||
460 | static void dummy_hrtimer_free(struct snd_pcm_substream *substream) | |
461 | { | |
462 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; | |
463 | dummy_hrtimer_sync(dpcm); | |
464 | kfree(dpcm); | |
465 | } | |
466 | ||
d8c5ed75 | 467 | static const struct dummy_timer_ops dummy_hrtimer_ops = { |
c631d03c TI |
468 | .create = dummy_hrtimer_create, |
469 | .free = dummy_hrtimer_free, | |
470 | .prepare = dummy_hrtimer_prepare, | |
471 | .start = dummy_hrtimer_start, | |
472 | .stop = dummy_hrtimer_stop, | |
473 | .pointer = dummy_hrtimer_pointer, | |
474 | }; | |
475 | ||
476 | #endif /* CONFIG_HIGH_RES_TIMERS */ | |
477 | ||
478 | /* | |
479 | * PCM interface | |
480 | */ | |
481 | ||
482 | static int dummy_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
483 | { | |
c631d03c TI |
484 | switch (cmd) { |
485 | case SNDRV_PCM_TRIGGER_START: | |
486 | case SNDRV_PCM_TRIGGER_RESUME: | |
ddce57a6 | 487 | return get_dummy_ops(substream)->start(substream); |
c631d03c TI |
488 | case SNDRV_PCM_TRIGGER_STOP: |
489 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
ddce57a6 | 490 | return get_dummy_ops(substream)->stop(substream); |
c631d03c TI |
491 | } |
492 | return -EINVAL; | |
493 | } | |
494 | ||
495 | static int dummy_pcm_prepare(struct snd_pcm_substream *substream) | |
496 | { | |
ddce57a6 | 497 | return get_dummy_ops(substream)->prepare(substream); |
c631d03c TI |
498 | } |
499 | ||
500 | static snd_pcm_uframes_t dummy_pcm_pointer(struct snd_pcm_substream *substream) | |
501 | { | |
ddce57a6 | 502 | return get_dummy_ops(substream)->pointer(substream); |
c631d03c TI |
503 | } |
504 | ||
b6c0b715 | 505 | static const struct snd_pcm_hardware dummy_pcm_hardware = { |
c631d03c TI |
506 | .info = (SNDRV_PCM_INFO_MMAP | |
507 | SNDRV_PCM_INFO_INTERLEAVED | | |
508 | SNDRV_PCM_INFO_RESUME | | |
509 | SNDRV_PCM_INFO_MMAP_VALID), | |
1da177e4 LT |
510 | .formats = USE_FORMATS, |
511 | .rates = USE_RATE, | |
512 | .rate_min = USE_RATE_MIN, | |
513 | .rate_max = USE_RATE_MAX, | |
514 | .channels_min = USE_CHANNELS_MIN, | |
515 | .channels_max = USE_CHANNELS_MAX, | |
516 | .buffer_bytes_max = MAX_BUFFER_SIZE, | |
d5e1ca05 | 517 | .period_bytes_min = MIN_PERIOD_SIZE, |
2ad5dd8d | 518 | .period_bytes_max = MAX_PERIOD_SIZE, |
1da177e4 LT |
519 | .periods_min = USE_PERIODS_MIN, |
520 | .periods_max = USE_PERIODS_MAX, | |
521 | .fifo_size = 0, | |
522 | }; | |
523 | ||
c631d03c TI |
524 | static int dummy_pcm_hw_params(struct snd_pcm_substream *substream, |
525 | struct snd_pcm_hw_params *hw_params) | |
1da177e4 | 526 | { |
a68c4d11 TI |
527 | if (fake_buffer) { |
528 | /* runtime->dma_bytes has to be set manually to allow mmap */ | |
529 | substream->runtime->dma_bytes = params_buffer_bytes(hw_params); | |
530 | return 0; | |
531 | } | |
c631d03c TI |
532 | return snd_pcm_lib_malloc_pages(substream, |
533 | params_buffer_bytes(hw_params)); | |
1da177e4 LT |
534 | } |
535 | ||
c631d03c | 536 | static int dummy_pcm_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 537 | { |
a68c4d11 TI |
538 | if (fake_buffer) |
539 | return 0; | |
1da177e4 LT |
540 | return snd_pcm_lib_free_pages(substream); |
541 | } | |
542 | ||
c631d03c | 543 | static int dummy_pcm_open(struct snd_pcm_substream *substream) |
c8eb6ba1 | 544 | { |
c631d03c | 545 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); |
d5e1ca05 | 546 | struct dummy_model *model = dummy->model; |
4a4d2cfd | 547 | struct snd_pcm_runtime *runtime = substream->runtime; |
ddce57a6 | 548 | const struct dummy_timer_ops *ops; |
c8eb6ba1 TI |
549 | int err; |
550 | ||
ddce57a6 | 551 | ops = &dummy_systimer_ops; |
c631d03c TI |
552 | #ifdef CONFIG_HIGH_RES_TIMERS |
553 | if (hrtimer) | |
ddce57a6 | 554 | ops = &dummy_hrtimer_ops; |
c631d03c TI |
555 | #endif |
556 | ||
ddce57a6 | 557 | err = ops->create(substream); |
1a11cb64 | 558 | if (err < 0) |
1da177e4 | 559 | return err; |
ddce57a6 | 560 | get_dummy_ops(substream) = ops; |
1da177e4 | 561 | |
d5e1ca05 | 562 | runtime->hw = dummy->pcm_hw; |
c631d03c | 563 | if (substream->pcm->device & 1) { |
1da177e4 LT |
564 | runtime->hw.info &= ~SNDRV_PCM_INFO_INTERLEAVED; |
565 | runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED; | |
566 | } | |
567 | if (substream->pcm->device & 2) | |
c631d03c TI |
568 | runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP | |
569 | SNDRV_PCM_INFO_MMAP_VALID); | |
570 | ||
d5e1ca05 JK |
571 | if (model == NULL) |
572 | return 0; | |
573 | ||
574 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
575 | if (model->playback_constraints) | |
576 | err = model->playback_constraints(substream->runtime); | |
577 | } else { | |
578 | if (model->capture_constraints) | |
579 | err = model->capture_constraints(substream->runtime); | |
580 | } | |
c631d03c | 581 | if (err < 0) { |
ddce57a6 | 582 | get_dummy_ops(substream)->free(substream); |
1da177e4 | 583 | return err; |
c631d03c | 584 | } |
1da177e4 LT |
585 | return 0; |
586 | } | |
587 | ||
c631d03c | 588 | static int dummy_pcm_close(struct snd_pcm_substream *substream) |
1da177e4 | 589 | { |
ddce57a6 | 590 | get_dummy_ops(substream)->free(substream); |
1da177e4 LT |
591 | return 0; |
592 | } | |
593 | ||
a68c4d11 TI |
594 | /* |
595 | * dummy buffer handling | |
596 | */ | |
597 | ||
598 | static void *dummy_page[2]; | |
599 | ||
600 | static void free_fake_buffer(void) | |
601 | { | |
602 | if (fake_buffer) { | |
603 | int i; | |
604 | for (i = 0; i < 2; i++) | |
605 | if (dummy_page[i]) { | |
606 | free_page((unsigned long)dummy_page[i]); | |
607 | dummy_page[i] = NULL; | |
608 | } | |
609 | } | |
610 | } | |
611 | ||
612 | static int alloc_fake_buffer(void) | |
613 | { | |
614 | int i; | |
615 | ||
616 | if (!fake_buffer) | |
617 | return 0; | |
618 | for (i = 0; i < 2; i++) { | |
619 | dummy_page[i] = (void *)get_zeroed_page(GFP_KERNEL); | |
620 | if (!dummy_page[i]) { | |
621 | free_fake_buffer(); | |
622 | return -ENOMEM; | |
623 | } | |
624 | } | |
625 | return 0; | |
626 | } | |
627 | ||
628 | static int dummy_pcm_copy(struct snd_pcm_substream *substream, | |
d53611d2 TI |
629 | int channel, unsigned long pos, |
630 | void __user *dst, unsigned long bytes) | |
631 | { | |
632 | return 0; /* do nothing */ | |
633 | } | |
634 | ||
635 | static int dummy_pcm_copy_kernel(struct snd_pcm_substream *substream, | |
636 | int channel, unsigned long pos, | |
637 | void *dst, unsigned long bytes) | |
a68c4d11 TI |
638 | { |
639 | return 0; /* do nothing */ | |
640 | } | |
641 | ||
642 | static int dummy_pcm_silence(struct snd_pcm_substream *substream, | |
d53611d2 TI |
643 | int channel, unsigned long pos, |
644 | unsigned long bytes) | |
a68c4d11 TI |
645 | { |
646 | return 0; /* do nothing */ | |
647 | } | |
648 | ||
649 | static struct page *dummy_pcm_page(struct snd_pcm_substream *substream, | |
650 | unsigned long offset) | |
651 | { | |
652 | return virt_to_page(dummy_page[substream->stream]); /* the same page */ | |
653 | } | |
654 | ||
c631d03c TI |
655 | static struct snd_pcm_ops dummy_pcm_ops = { |
656 | .open = dummy_pcm_open, | |
657 | .close = dummy_pcm_close, | |
658 | .ioctl = snd_pcm_lib_ioctl, | |
659 | .hw_params = dummy_pcm_hw_params, | |
660 | .hw_free = dummy_pcm_hw_free, | |
661 | .prepare = dummy_pcm_prepare, | |
662 | .trigger = dummy_pcm_trigger, | |
663 | .pointer = dummy_pcm_pointer, | |
1da177e4 LT |
664 | }; |
665 | ||
a68c4d11 TI |
666 | static struct snd_pcm_ops dummy_pcm_ops_no_buf = { |
667 | .open = dummy_pcm_open, | |
668 | .close = dummy_pcm_close, | |
669 | .ioctl = snd_pcm_lib_ioctl, | |
670 | .hw_params = dummy_pcm_hw_params, | |
671 | .hw_free = dummy_pcm_hw_free, | |
672 | .prepare = dummy_pcm_prepare, | |
673 | .trigger = dummy_pcm_trigger, | |
674 | .pointer = dummy_pcm_pointer, | |
d53611d2 TI |
675 | .copy_user = dummy_pcm_copy, |
676 | .copy_kernel = dummy_pcm_copy_kernel, | |
677 | .fill_silence = dummy_pcm_silence, | |
a68c4d11 TI |
678 | .page = dummy_pcm_page, |
679 | }; | |
680 | ||
fbbb01a1 BP |
681 | static int snd_card_dummy_pcm(struct snd_dummy *dummy, int device, |
682 | int substreams) | |
1da177e4 | 683 | { |
4a4d2cfd | 684 | struct snd_pcm *pcm; |
a68c4d11 | 685 | struct snd_pcm_ops *ops; |
1da177e4 LT |
686 | int err; |
687 | ||
1a11cb64 JK |
688 | err = snd_pcm_new(dummy->card, "Dummy PCM", device, |
689 | substreams, substreams, &pcm); | |
690 | if (err < 0) | |
1da177e4 | 691 | return err; |
6e65c1cc | 692 | dummy->pcm = pcm; |
a68c4d11 TI |
693 | if (fake_buffer) |
694 | ops = &dummy_pcm_ops_no_buf; | |
695 | else | |
696 | ops = &dummy_pcm_ops; | |
697 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, ops); | |
698 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, ops); | |
1da177e4 LT |
699 | pcm->private_data = dummy; |
700 | pcm->info_flags = 0; | |
701 | strcpy(pcm->name, "Dummy PCM"); | |
a68c4d11 TI |
702 | if (!fake_buffer) { |
703 | snd_pcm_lib_preallocate_pages_for_all(pcm, | |
704 | SNDRV_DMA_TYPE_CONTINUOUS, | |
705 | snd_dma_continuous_data(GFP_KERNEL), | |
706 | 0, 64*1024); | |
707 | } | |
1da177e4 LT |
708 | return 0; |
709 | } | |
710 | ||
9b151fec TI |
711 | /* |
712 | * mixer interface | |
713 | */ | |
714 | ||
1da177e4 | 715 | #define DUMMY_VOLUME(xname, xindex, addr) \ |
fb567a8e TI |
716 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ |
717 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \ | |
718 | .name = xname, .index = xindex, \ | |
1da177e4 LT |
719 | .info = snd_dummy_volume_info, \ |
720 | .get = snd_dummy_volume_get, .put = snd_dummy_volume_put, \ | |
fb567a8e TI |
721 | .private_value = addr, \ |
722 | .tlv = { .p = db_scale_dummy } } | |
1da177e4 | 723 | |
4a4d2cfd TI |
724 | static int snd_dummy_volume_info(struct snd_kcontrol *kcontrol, |
725 | struct snd_ctl_elem_info *uinfo) | |
1da177e4 LT |
726 | { |
727 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
728 | uinfo->count = 2; | |
729 | uinfo->value.integer.min = -50; | |
730 | uinfo->value.integer.max = 100; | |
731 | return 0; | |
732 | } | |
733 | ||
4a4d2cfd TI |
734 | static int snd_dummy_volume_get(struct snd_kcontrol *kcontrol, |
735 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 736 | { |
4a4d2cfd | 737 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
738 | int addr = kcontrol->private_value; |
739 | ||
c8eb6ba1 | 740 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
741 | ucontrol->value.integer.value[0] = dummy->mixer_volume[addr][0]; |
742 | ucontrol->value.integer.value[1] = dummy->mixer_volume[addr][1]; | |
c8eb6ba1 | 743 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
744 | return 0; |
745 | } | |
746 | ||
4a4d2cfd TI |
747 | static int snd_dummy_volume_put(struct snd_kcontrol *kcontrol, |
748 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 749 | { |
4a4d2cfd | 750 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
751 | int change, addr = kcontrol->private_value; |
752 | int left, right; | |
753 | ||
754 | left = ucontrol->value.integer.value[0]; | |
755 | if (left < -50) | |
756 | left = -50; | |
757 | if (left > 100) | |
758 | left = 100; | |
759 | right = ucontrol->value.integer.value[1]; | |
760 | if (right < -50) | |
761 | right = -50; | |
762 | if (right > 100) | |
763 | right = 100; | |
c8eb6ba1 | 764 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
765 | change = dummy->mixer_volume[addr][0] != left || |
766 | dummy->mixer_volume[addr][1] != right; | |
767 | dummy->mixer_volume[addr][0] = left; | |
768 | dummy->mixer_volume[addr][1] = right; | |
c8eb6ba1 | 769 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
770 | return change; |
771 | } | |
772 | ||
0cb29ea0 | 773 | static const DECLARE_TLV_DB_SCALE(db_scale_dummy, -4500, 30, 0); |
fb567a8e | 774 | |
1da177e4 LT |
775 | #define DUMMY_CAPSRC(xname, xindex, addr) \ |
776 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ | |
777 | .info = snd_dummy_capsrc_info, \ | |
778 | .get = snd_dummy_capsrc_get, .put = snd_dummy_capsrc_put, \ | |
779 | .private_value = addr } | |
780 | ||
a5ce8890 | 781 | #define snd_dummy_capsrc_info snd_ctl_boolean_stereo_info |
1da177e4 | 782 | |
4a4d2cfd TI |
783 | static int snd_dummy_capsrc_get(struct snd_kcontrol *kcontrol, |
784 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 785 | { |
4a4d2cfd | 786 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
787 | int addr = kcontrol->private_value; |
788 | ||
c8eb6ba1 | 789 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
790 | ucontrol->value.integer.value[0] = dummy->capture_source[addr][0]; |
791 | ucontrol->value.integer.value[1] = dummy->capture_source[addr][1]; | |
c8eb6ba1 | 792 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
793 | return 0; |
794 | } | |
795 | ||
4a4d2cfd | 796 | static int snd_dummy_capsrc_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1da177e4 | 797 | { |
4a4d2cfd | 798 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
799 | int change, addr = kcontrol->private_value; |
800 | int left, right; | |
801 | ||
802 | left = ucontrol->value.integer.value[0] & 1; | |
803 | right = ucontrol->value.integer.value[1] & 1; | |
c8eb6ba1 | 804 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
805 | change = dummy->capture_source[addr][0] != left && |
806 | dummy->capture_source[addr][1] != right; | |
807 | dummy->capture_source[addr][0] = left; | |
808 | dummy->capture_source[addr][1] = right; | |
c8eb6ba1 | 809 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
810 | return change; |
811 | } | |
812 | ||
16e43467 CL |
813 | static int snd_dummy_iobox_info(struct snd_kcontrol *kcontrol, |
814 | struct snd_ctl_elem_info *info) | |
815 | { | |
a4a1b737 | 816 | static const char *const names[] = { "None", "CD Player" }; |
16e43467 CL |
817 | |
818 | return snd_ctl_enum_info(info, 1, 2, names); | |
819 | } | |
820 | ||
821 | static int snd_dummy_iobox_get(struct snd_kcontrol *kcontrol, | |
822 | struct snd_ctl_elem_value *value) | |
823 | { | |
824 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); | |
825 | ||
826 | value->value.enumerated.item[0] = dummy->iobox; | |
827 | return 0; | |
828 | } | |
829 | ||
830 | static int snd_dummy_iobox_put(struct snd_kcontrol *kcontrol, | |
831 | struct snd_ctl_elem_value *value) | |
832 | { | |
833 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); | |
834 | int changed; | |
835 | ||
836 | if (value->value.enumerated.item[0] > 1) | |
837 | return -EINVAL; | |
838 | ||
839 | changed = value->value.enumerated.item[0] != dummy->iobox; | |
840 | if (changed) { | |
841 | dummy->iobox = value->value.enumerated.item[0]; | |
842 | ||
843 | if (dummy->iobox) { | |
844 | dummy->cd_volume_ctl->vd[0].access &= | |
845 | ~SNDRV_CTL_ELEM_ACCESS_INACTIVE; | |
846 | dummy->cd_switch_ctl->vd[0].access &= | |
847 | ~SNDRV_CTL_ELEM_ACCESS_INACTIVE; | |
848 | } else { | |
849 | dummy->cd_volume_ctl->vd[0].access |= | |
850 | SNDRV_CTL_ELEM_ACCESS_INACTIVE; | |
851 | dummy->cd_switch_ctl->vd[0].access |= | |
852 | SNDRV_CTL_ELEM_ACCESS_INACTIVE; | |
853 | } | |
854 | ||
855 | snd_ctl_notify(dummy->card, SNDRV_CTL_EVENT_MASK_INFO, | |
856 | &dummy->cd_volume_ctl->id); | |
857 | snd_ctl_notify(dummy->card, SNDRV_CTL_EVENT_MASK_INFO, | |
858 | &dummy->cd_switch_ctl->id); | |
859 | } | |
860 | ||
861 | return changed; | |
862 | } | |
863 | ||
4a4d2cfd | 864 | static struct snd_kcontrol_new snd_dummy_controls[] = { |
1da177e4 LT |
865 | DUMMY_VOLUME("Master Volume", 0, MIXER_ADDR_MASTER), |
866 | DUMMY_CAPSRC("Master Capture Switch", 0, MIXER_ADDR_MASTER), | |
867 | DUMMY_VOLUME("Synth Volume", 0, MIXER_ADDR_SYNTH), | |
e05d6964 | 868 | DUMMY_CAPSRC("Synth Capture Switch", 0, MIXER_ADDR_SYNTH), |
1da177e4 | 869 | DUMMY_VOLUME("Line Volume", 0, MIXER_ADDR_LINE), |
e05d6964 | 870 | DUMMY_CAPSRC("Line Capture Switch", 0, MIXER_ADDR_LINE), |
1da177e4 | 871 | DUMMY_VOLUME("Mic Volume", 0, MIXER_ADDR_MIC), |
e05d6964 | 872 | DUMMY_CAPSRC("Mic Capture Switch", 0, MIXER_ADDR_MIC), |
1da177e4 | 873 | DUMMY_VOLUME("CD Volume", 0, MIXER_ADDR_CD), |
16e43467 CL |
874 | DUMMY_CAPSRC("CD Capture Switch", 0, MIXER_ADDR_CD), |
875 | { | |
876 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
877 | .name = "External I/O Box", | |
878 | .info = snd_dummy_iobox_info, | |
879 | .get = snd_dummy_iobox_get, | |
880 | .put = snd_dummy_iobox_put, | |
881 | }, | |
1da177e4 LT |
882 | }; |
883 | ||
fbbb01a1 | 884 | static int snd_card_dummy_new_mixer(struct snd_dummy *dummy) |
1da177e4 | 885 | { |
4a4d2cfd | 886 | struct snd_card *card = dummy->card; |
16e43467 | 887 | struct snd_kcontrol *kcontrol; |
1da177e4 LT |
888 | unsigned int idx; |
889 | int err; | |
890 | ||
1da177e4 LT |
891 | spin_lock_init(&dummy->mixer_lock); |
892 | strcpy(card->mixername, "Dummy Mixer"); | |
16e43467 | 893 | dummy->iobox = 1; |
1da177e4 LT |
894 | |
895 | for (idx = 0; idx < ARRAY_SIZE(snd_dummy_controls); idx++) { | |
16e43467 CL |
896 | kcontrol = snd_ctl_new1(&snd_dummy_controls[idx], dummy); |
897 | err = snd_ctl_add(card, kcontrol); | |
1a11cb64 | 898 | if (err < 0) |
1da177e4 | 899 | return err; |
16e43467 CL |
900 | if (!strcmp(kcontrol->id.name, "CD Volume")) |
901 | dummy->cd_volume_ctl = kcontrol; | |
902 | else if (!strcmp(kcontrol->id.name, "CD Capture Switch")) | |
903 | dummy->cd_switch_ctl = kcontrol; | |
904 | ||
1da177e4 LT |
905 | } |
906 | return 0; | |
907 | } | |
908 | ||
129a4c9f | 909 | #if defined(CONFIG_SND_DEBUG) && defined(CONFIG_SND_PROC_FS) |
9b151fec TI |
910 | /* |
911 | * proc interface | |
912 | */ | |
d5e1ca05 JK |
913 | static void print_formats(struct snd_dummy *dummy, |
914 | struct snd_info_buffer *buffer) | |
9b151fec TI |
915 | { |
916 | int i; | |
917 | ||
918 | for (i = 0; i < SNDRV_PCM_FORMAT_LAST; i++) { | |
d5e1ca05 | 919 | if (dummy->pcm_hw.formats & (1ULL << i)) |
9b151fec TI |
920 | snd_iprintf(buffer, " %s", snd_pcm_format_name(i)); |
921 | } | |
922 | } | |
923 | ||
d5e1ca05 JK |
924 | static void print_rates(struct snd_dummy *dummy, |
925 | struct snd_info_buffer *buffer) | |
9b151fec TI |
926 | { |
927 | static int rates[] = { | |
928 | 5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000, | |
929 | 64000, 88200, 96000, 176400, 192000, | |
930 | }; | |
931 | int i; | |
932 | ||
d5e1ca05 | 933 | if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_CONTINUOUS) |
9b151fec | 934 | snd_iprintf(buffer, " continuous"); |
d5e1ca05 | 935 | if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_KNOT) |
9b151fec TI |
936 | snd_iprintf(buffer, " knot"); |
937 | for (i = 0; i < ARRAY_SIZE(rates); i++) | |
d5e1ca05 | 938 | if (dummy->pcm_hw.rates & (1 << i)) |
9b151fec TI |
939 | snd_iprintf(buffer, " %d", rates[i]); |
940 | } | |
941 | ||
d5e1ca05 JK |
942 | #define get_dummy_int_ptr(dummy, ofs) \ |
943 | (unsigned int *)((char *)&((dummy)->pcm_hw) + (ofs)) | |
944 | #define get_dummy_ll_ptr(dummy, ofs) \ | |
945 | (unsigned long long *)((char *)&((dummy)->pcm_hw) + (ofs)) | |
9b151fec TI |
946 | |
947 | struct dummy_hw_field { | |
948 | const char *name; | |
949 | const char *format; | |
950 | unsigned int offset; | |
951 | unsigned int size; | |
952 | }; | |
953 | #define FIELD_ENTRY(item, fmt) { \ | |
954 | .name = #item, \ | |
955 | .format = fmt, \ | |
956 | .offset = offsetof(struct snd_pcm_hardware, item), \ | |
957 | .size = sizeof(dummy_pcm_hardware.item) } | |
958 | ||
959 | static struct dummy_hw_field fields[] = { | |
960 | FIELD_ENTRY(formats, "%#llx"), | |
961 | FIELD_ENTRY(rates, "%#x"), | |
962 | FIELD_ENTRY(rate_min, "%d"), | |
963 | FIELD_ENTRY(rate_max, "%d"), | |
964 | FIELD_ENTRY(channels_min, "%d"), | |
965 | FIELD_ENTRY(channels_max, "%d"), | |
966 | FIELD_ENTRY(buffer_bytes_max, "%ld"), | |
967 | FIELD_ENTRY(period_bytes_min, "%ld"), | |
968 | FIELD_ENTRY(period_bytes_max, "%ld"), | |
969 | FIELD_ENTRY(periods_min, "%d"), | |
970 | FIELD_ENTRY(periods_max, "%d"), | |
971 | }; | |
972 | ||
973 | static void dummy_proc_read(struct snd_info_entry *entry, | |
974 | struct snd_info_buffer *buffer) | |
975 | { | |
d5e1ca05 | 976 | struct snd_dummy *dummy = entry->private_data; |
9b151fec TI |
977 | int i; |
978 | ||
979 | for (i = 0; i < ARRAY_SIZE(fields); i++) { | |
980 | snd_iprintf(buffer, "%s ", fields[i].name); | |
981 | if (fields[i].size == sizeof(int)) | |
982 | snd_iprintf(buffer, fields[i].format, | |
d5e1ca05 | 983 | *get_dummy_int_ptr(dummy, fields[i].offset)); |
9b151fec TI |
984 | else |
985 | snd_iprintf(buffer, fields[i].format, | |
d5e1ca05 | 986 | *get_dummy_ll_ptr(dummy, fields[i].offset)); |
9b151fec | 987 | if (!strcmp(fields[i].name, "formats")) |
d5e1ca05 | 988 | print_formats(dummy, buffer); |
9b151fec | 989 | else if (!strcmp(fields[i].name, "rates")) |
d5e1ca05 | 990 | print_rates(dummy, buffer); |
9b151fec TI |
991 | snd_iprintf(buffer, "\n"); |
992 | } | |
993 | } | |
994 | ||
995 | static void dummy_proc_write(struct snd_info_entry *entry, | |
996 | struct snd_info_buffer *buffer) | |
997 | { | |
d5e1ca05 | 998 | struct snd_dummy *dummy = entry->private_data; |
9b151fec TI |
999 | char line[64]; |
1000 | ||
1001 | while (!snd_info_get_line(buffer, line, sizeof(line))) { | |
1002 | char item[20]; | |
1003 | const char *ptr; | |
1004 | unsigned long long val; | |
1005 | int i; | |
1006 | ||
1007 | ptr = snd_info_get_str(item, line, sizeof(item)); | |
1008 | for (i = 0; i < ARRAY_SIZE(fields); i++) { | |
1009 | if (!strcmp(item, fields[i].name)) | |
1010 | break; | |
1011 | } | |
1012 | if (i >= ARRAY_SIZE(fields)) | |
1013 | continue; | |
1014 | snd_info_get_str(item, ptr, sizeof(item)); | |
b785a492 | 1015 | if (kstrtoull(item, 0, &val)) |
9b151fec TI |
1016 | continue; |
1017 | if (fields[i].size == sizeof(int)) | |
d5e1ca05 | 1018 | *get_dummy_int_ptr(dummy, fields[i].offset) = val; |
9b151fec | 1019 | else |
d5e1ca05 | 1020 | *get_dummy_ll_ptr(dummy, fields[i].offset) = val; |
9b151fec TI |
1021 | } |
1022 | } | |
1023 | ||
fbbb01a1 | 1024 | static void dummy_proc_init(struct snd_dummy *chip) |
9b151fec | 1025 | { |
815d808c TI |
1026 | snd_card_rw_proc_new(chip->card, "dummy_pcm", chip, |
1027 | dummy_proc_read, dummy_proc_write); | |
9b151fec TI |
1028 | } |
1029 | #else | |
1030 | #define dummy_proc_init(x) | |
129a4c9f | 1031 | #endif /* CONFIG_SND_DEBUG && CONFIG_SND_PROC_FS */ |
9b151fec | 1032 | |
fbbb01a1 | 1033 | static int snd_dummy_probe(struct platform_device *devptr) |
1da177e4 | 1034 | { |
4a4d2cfd TI |
1035 | struct snd_card *card; |
1036 | struct snd_dummy *dummy; | |
d5e1ca05 | 1037 | struct dummy_model *m = NULL, **mdl; |
1da177e4 | 1038 | int idx, err; |
6e65c1cc | 1039 | int dev = devptr->id; |
1da177e4 | 1040 | |
5872f3f6 TI |
1041 | err = snd_card_new(&devptr->dev, index[dev], id[dev], THIS_MODULE, |
1042 | sizeof(struct snd_dummy), &card); | |
bd7dd77c TI |
1043 | if (err < 0) |
1044 | return err; | |
4a4d2cfd | 1045 | dummy = card->private_data; |
1da177e4 | 1046 | dummy->card = card; |
d5e1ca05 JK |
1047 | for (mdl = dummy_models; *mdl && model[dev]; mdl++) { |
1048 | if (strcmp(model[dev], (*mdl)->name) == 0) { | |
1049 | printk(KERN_INFO | |
1050 | "snd-dummy: Using model '%s' for card %i\n", | |
1051 | (*mdl)->name, card->number); | |
1052 | m = dummy->model = *mdl; | |
1053 | break; | |
1054 | } | |
1055 | } | |
1da177e4 LT |
1056 | for (idx = 0; idx < MAX_PCM_DEVICES && idx < pcm_devs[dev]; idx++) { |
1057 | if (pcm_substreams[dev] < 1) | |
1058 | pcm_substreams[dev] = 1; | |
1059 | if (pcm_substreams[dev] > MAX_PCM_SUBSTREAMS) | |
1060 | pcm_substreams[dev] = MAX_PCM_SUBSTREAMS; | |
1a11cb64 JK |
1061 | err = snd_card_dummy_pcm(dummy, idx, pcm_substreams[dev]); |
1062 | if (err < 0) | |
1da177e4 LT |
1063 | goto __nodev; |
1064 | } | |
d5e1ca05 JK |
1065 | |
1066 | dummy->pcm_hw = dummy_pcm_hardware; | |
1067 | if (m) { | |
1068 | if (m->formats) | |
1069 | dummy->pcm_hw.formats = m->formats; | |
1070 | if (m->buffer_bytes_max) | |
1071 | dummy->pcm_hw.buffer_bytes_max = m->buffer_bytes_max; | |
1072 | if (m->period_bytes_min) | |
1073 | dummy->pcm_hw.period_bytes_min = m->period_bytes_min; | |
1074 | if (m->period_bytes_max) | |
1075 | dummy->pcm_hw.period_bytes_max = m->period_bytes_max; | |
1076 | if (m->periods_min) | |
1077 | dummy->pcm_hw.periods_min = m->periods_min; | |
1078 | if (m->periods_max) | |
1079 | dummy->pcm_hw.periods_max = m->periods_max; | |
1080 | if (m->rates) | |
1081 | dummy->pcm_hw.rates = m->rates; | |
1082 | if (m->rate_min) | |
1083 | dummy->pcm_hw.rate_min = m->rate_min; | |
1084 | if (m->rate_max) | |
1085 | dummy->pcm_hw.rate_max = m->rate_max; | |
1086 | if (m->channels_min) | |
1087 | dummy->pcm_hw.channels_min = m->channels_min; | |
1088 | if (m->channels_max) | |
1089 | dummy->pcm_hw.channels_max = m->channels_max; | |
1090 | } | |
1091 | ||
1a11cb64 JK |
1092 | err = snd_card_dummy_new_mixer(dummy); |
1093 | if (err < 0) | |
1da177e4 LT |
1094 | goto __nodev; |
1095 | strcpy(card->driver, "Dummy"); | |
1096 | strcpy(card->shortname, "Dummy"); | |
1097 | sprintf(card->longname, "Dummy %i", dev + 1); | |
16dab54b | 1098 | |
9b151fec TI |
1099 | dummy_proc_init(dummy); |
1100 | ||
1a11cb64 JK |
1101 | err = snd_card_register(card); |
1102 | if (err == 0) { | |
6e65c1cc | 1103 | platform_set_drvdata(devptr, card); |
1da177e4 LT |
1104 | return 0; |
1105 | } | |
1106 | __nodev: | |
1107 | snd_card_free(card); | |
1108 | return err; | |
1109 | } | |
1110 | ||
fbbb01a1 | 1111 | static int snd_dummy_remove(struct platform_device *devptr) |
6e65c1cc TI |
1112 | { |
1113 | snd_card_free(platform_get_drvdata(devptr)); | |
6e65c1cc TI |
1114 | return 0; |
1115 | } | |
1116 | ||
d34e4e00 | 1117 | #ifdef CONFIG_PM_SLEEP |
284e7ca7 | 1118 | static int snd_dummy_suspend(struct device *pdev) |
1da177e4 | 1119 | { |
284e7ca7 | 1120 | struct snd_card *card = dev_get_drvdata(pdev); |
1da177e4 | 1121 | |
6e65c1cc | 1122 | snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
6e65c1cc TI |
1123 | return 0; |
1124 | } | |
1125 | ||
284e7ca7 | 1126 | static int snd_dummy_resume(struct device *pdev) |
6e65c1cc | 1127 | { |
284e7ca7 | 1128 | struct snd_card *card = dev_get_drvdata(pdev); |
6e65c1cc TI |
1129 | |
1130 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); | |
1131 | return 0; | |
1132 | } | |
284e7ca7 TI |
1133 | |
1134 | static SIMPLE_DEV_PM_OPS(snd_dummy_pm, snd_dummy_suspend, snd_dummy_resume); | |
1135 | #define SND_DUMMY_PM_OPS &snd_dummy_pm | |
1136 | #else | |
1137 | #define SND_DUMMY_PM_OPS NULL | |
6e65c1cc TI |
1138 | #endif |
1139 | ||
1140 | #define SND_DUMMY_DRIVER "snd_dummy" | |
1141 | ||
1142 | static struct platform_driver snd_dummy_driver = { | |
1143 | .probe = snd_dummy_probe, | |
fbbb01a1 | 1144 | .remove = snd_dummy_remove, |
6e65c1cc | 1145 | .driver = { |
8bf01d8a | 1146 | .name = SND_DUMMY_DRIVER, |
284e7ca7 | 1147 | .pm = SND_DUMMY_PM_OPS, |
6e65c1cc TI |
1148 | }, |
1149 | }; | |
1150 | ||
c12aad6e | 1151 | static void snd_dummy_unregister_all(void) |
f7a9275d CL |
1152 | { |
1153 | int i; | |
1154 | ||
1155 | for (i = 0; i < ARRAY_SIZE(devices); ++i) | |
1156 | platform_device_unregister(devices[i]); | |
1157 | platform_driver_unregister(&snd_dummy_driver); | |
a68c4d11 | 1158 | free_fake_buffer(); |
f7a9275d CL |
1159 | } |
1160 | ||
6e65c1cc TI |
1161 | static int __init alsa_card_dummy_init(void) |
1162 | { | |
1163 | int i, cards, err; | |
1164 | ||
1a11cb64 JK |
1165 | err = platform_driver_register(&snd_dummy_driver); |
1166 | if (err < 0) | |
6e65c1cc TI |
1167 | return err; |
1168 | ||
a68c4d11 TI |
1169 | err = alloc_fake_buffer(); |
1170 | if (err < 0) { | |
1171 | platform_driver_unregister(&snd_dummy_driver); | |
1172 | return err; | |
1173 | } | |
1174 | ||
6e65c1cc | 1175 | cards = 0; |
8278ca8f | 1176 | for (i = 0; i < SNDRV_CARDS; i++) { |
6e65c1cc | 1177 | struct platform_device *device; |
8278ca8f TI |
1178 | if (! enable[i]) |
1179 | continue; | |
6e65c1cc TI |
1180 | device = platform_device_register_simple(SND_DUMMY_DRIVER, |
1181 | i, NULL, 0); | |
a182ee98 RH |
1182 | if (IS_ERR(device)) |
1183 | continue; | |
7152447d RH |
1184 | if (!platform_get_drvdata(device)) { |
1185 | platform_device_unregister(device); | |
1186 | continue; | |
1187 | } | |
f7a9275d | 1188 | devices[i] = device; |
1da177e4 LT |
1189 | cards++; |
1190 | } | |
1191 | if (!cards) { | |
1192 | #ifdef MODULE | |
1193 | printk(KERN_ERR "Dummy soundcard not found or device busy\n"); | |
1194 | #endif | |
a182ee98 RH |
1195 | snd_dummy_unregister_all(); |
1196 | return -ENODEV; | |
1da177e4 LT |
1197 | } |
1198 | return 0; | |
1199 | } | |
1200 | ||
1201 | static void __exit alsa_card_dummy_exit(void) | |
1202 | { | |
f7a9275d | 1203 | snd_dummy_unregister_all(); |
1da177e4 LT |
1204 | } |
1205 | ||
1206 | module_init(alsa_card_dummy_init) | |
1207 | module_exit(alsa_card_dummy_exit) |