Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Dummy soundcard | |
3 | * Copyright (c) by Jaroslav Kysela <perex@suse.cz> | |
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 | ||
21 | #include <sound/driver.h> | |
22 | #include <linux/init.h> | |
6e65c1cc TI |
23 | #include <linux/err.h> |
24 | #include <linux/platform_device.h> | |
1da177e4 LT |
25 | #include <linux/jiffies.h> |
26 | #include <linux/slab.h> | |
27 | #include <linux/time.h> | |
28 | #include <linux/wait.h> | |
29 | #include <linux/moduleparam.h> | |
30 | #include <sound/core.h> | |
31 | #include <sound/control.h> | |
fb567a8e | 32 | #include <sound/tlv.h> |
1da177e4 LT |
33 | #include <sound/pcm.h> |
34 | #include <sound/rawmidi.h> | |
35 | #include <sound/initval.h> | |
36 | ||
37 | MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>"); | |
38 | MODULE_DESCRIPTION("Dummy soundcard (/dev/null)"); | |
39 | MODULE_LICENSE("GPL"); | |
40 | MODULE_SUPPORTED_DEVICE("{{ALSA,Dummy soundcard}}"); | |
41 | ||
42 | #define MAX_PCM_DEVICES 4 | |
43 | #define MAX_PCM_SUBSTREAMS 16 | |
44 | #define MAX_MIDI_DEVICES 2 | |
45 | ||
46 | #if 0 /* emu10k1 emulation */ | |
47 | #define MAX_BUFFER_SIZE (128 * 1024) | |
4a4d2cfd | 48 | static int emu10k1_playback_constraints(struct snd_pcm_runtime *runtime) |
1da177e4 LT |
49 | { |
50 | int err; | |
51 | if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) | |
52 | return err; | |
53 | if ((err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 256, UINT_MAX)) < 0) | |
54 | return err; | |
55 | return 0; | |
56 | } | |
57 | #define add_playback_constraints emu10k1_playback_constraints | |
58 | #endif | |
59 | ||
60 | #if 0 /* RME9652 emulation */ | |
61 | #define MAX_BUFFER_SIZE (26 * 64 * 1024) | |
62 | #define USE_FORMATS SNDRV_PCM_FMTBIT_S32_LE | |
63 | #define USE_CHANNELS_MIN 26 | |
64 | #define USE_CHANNELS_MAX 26 | |
65 | #define USE_PERIODS_MIN 2 | |
66 | #define USE_PERIODS_MAX 2 | |
67 | #endif | |
68 | ||
69 | #if 0 /* ICE1712 emulation */ | |
70 | #define MAX_BUFFER_SIZE (256 * 1024) | |
71 | #define USE_FORMATS SNDRV_PCM_FMTBIT_S32_LE | |
72 | #define USE_CHANNELS_MIN 10 | |
73 | #define USE_CHANNELS_MAX 10 | |
74 | #define USE_PERIODS_MIN 1 | |
75 | #define USE_PERIODS_MAX 1024 | |
76 | #endif | |
77 | ||
78 | #if 0 /* UDA1341 emulation */ | |
79 | #define MAX_BUFFER_SIZE (16380) | |
80 | #define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE | |
81 | #define USE_CHANNELS_MIN 2 | |
82 | #define USE_CHANNELS_MAX 2 | |
83 | #define USE_PERIODS_MIN 2 | |
84 | #define USE_PERIODS_MAX 255 | |
85 | #endif | |
86 | ||
87 | #if 0 /* simple AC97 bridge (intel8x0) with 48kHz AC97 only codec */ | |
88 | #define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE | |
89 | #define USE_CHANNELS_MIN 2 | |
90 | #define USE_CHANNELS_MAX 2 | |
91 | #define USE_RATE SNDRV_PCM_RATE_48000 | |
92 | #define USE_RATE_MIN 48000 | |
93 | #define USE_RATE_MAX 48000 | |
94 | #endif | |
95 | ||
2ad5dd8d JK |
96 | #if 0 /* CA0106 */ |
97 | #define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE | |
98 | #define USE_CHANNELS_MIN 2 | |
99 | #define USE_CHANNELS_MAX 2 | |
100 | #define USE_RATE (SNDRV_PCM_RATE_48000|SNDRV_PCM_RATE_96000|SNDRV_PCM_RATE_192000) | |
101 | #define USE_RATE_MIN 48000 | |
102 | #define USE_RATE_MAX 192000 | |
103 | #define MAX_BUFFER_SIZE ((65536-64)*8) | |
104 | #define MAX_PERIOD_SIZE (65536-64) | |
105 | #define USE_PERIODS_MIN 2 | |
106 | #define USE_PERIODS_MAX 8 | |
107 | #endif | |
108 | ||
1da177e4 LT |
109 | |
110 | /* defaults */ | |
111 | #ifndef MAX_BUFFER_SIZE | |
112 | #define MAX_BUFFER_SIZE (64*1024) | |
113 | #endif | |
2ad5dd8d JK |
114 | #ifndef MAX_PERIOD_SIZE |
115 | #define MAX_PERIOD_SIZE MAX_BUFFER_SIZE | |
116 | #endif | |
1da177e4 LT |
117 | #ifndef USE_FORMATS |
118 | #define USE_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE) | |
119 | #endif | |
120 | #ifndef USE_RATE | |
121 | #define USE_RATE SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000 | |
122 | #define USE_RATE_MIN 5500 | |
123 | #define USE_RATE_MAX 48000 | |
124 | #endif | |
125 | #ifndef USE_CHANNELS_MIN | |
126 | #define USE_CHANNELS_MIN 1 | |
127 | #endif | |
128 | #ifndef USE_CHANNELS_MAX | |
129 | #define USE_CHANNELS_MAX 2 | |
130 | #endif | |
131 | #ifndef USE_PERIODS_MIN | |
132 | #define USE_PERIODS_MIN 1 | |
133 | #endif | |
134 | #ifndef USE_PERIODS_MAX | |
135 | #define USE_PERIODS_MAX 1024 | |
136 | #endif | |
137 | #ifndef add_playback_constraints | |
138 | #define add_playback_constraints(x) 0 | |
139 | #endif | |
140 | #ifndef add_capture_constraints | |
141 | #define add_capture_constraints(x) 0 | |
142 | #endif | |
143 | ||
144 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ | |
145 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ | |
146 | static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0}; | |
147 | static int pcm_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1}; | |
148 | static int pcm_substreams[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 8}; | |
149 | //static int midi_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2}; | |
150 | ||
151 | module_param_array(index, int, NULL, 0444); | |
152 | MODULE_PARM_DESC(index, "Index value for dummy soundcard."); | |
153 | module_param_array(id, charp, NULL, 0444); | |
154 | MODULE_PARM_DESC(id, "ID string for dummy soundcard."); | |
155 | module_param_array(enable, bool, NULL, 0444); | |
156 | MODULE_PARM_DESC(enable, "Enable this dummy soundcard."); | |
157 | module_param_array(pcm_devs, int, NULL, 0444); | |
158 | MODULE_PARM_DESC(pcm_devs, "PCM devices # (0-4) for dummy driver."); | |
159 | module_param_array(pcm_substreams, int, NULL, 0444); | |
160 | MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-16) for dummy driver."); | |
161 | //module_param_array(midi_devs, int, NULL, 0444); | |
162 | //MODULE_PARM_DESC(midi_devs, "MIDI devices # (0-2) for dummy driver."); | |
163 | ||
f7a9275d CL |
164 | static struct platform_device *devices[SNDRV_CARDS]; |
165 | ||
1da177e4 LT |
166 | #define MIXER_ADDR_MASTER 0 |
167 | #define MIXER_ADDR_LINE 1 | |
168 | #define MIXER_ADDR_MIC 2 | |
169 | #define MIXER_ADDR_SYNTH 3 | |
170 | #define MIXER_ADDR_CD 4 | |
171 | #define MIXER_ADDR_LAST 4 | |
172 | ||
4a4d2cfd TI |
173 | struct snd_dummy { |
174 | struct snd_card *card; | |
6e65c1cc | 175 | struct snd_pcm *pcm; |
1da177e4 LT |
176 | spinlock_t mixer_lock; |
177 | int mixer_volume[MIXER_ADDR_LAST+1][2]; | |
178 | int capture_source[MIXER_ADDR_LAST+1][2]; | |
4a4d2cfd | 179 | }; |
1da177e4 | 180 | |
4a4d2cfd TI |
181 | struct snd_dummy_pcm { |
182 | struct snd_dummy *dummy; | |
1da177e4 LT |
183 | spinlock_t lock; |
184 | struct timer_list timer; | |
185 | unsigned int pcm_size; | |
186 | unsigned int pcm_count; | |
187 | unsigned int pcm_bps; /* bytes per second */ | |
188 | unsigned int pcm_jiffie; /* bytes per one jiffie */ | |
189 | unsigned int pcm_irq_pos; /* IRQ position */ | |
190 | unsigned int pcm_buf_pos; /* position in buffer */ | |
4a4d2cfd TI |
191 | struct snd_pcm_substream *substream; |
192 | }; | |
1da177e4 | 193 | |
1da177e4 | 194 | |
4a4d2cfd | 195 | static inline void snd_card_dummy_pcm_timer_start(struct snd_dummy_pcm *dpcm) |
1da177e4 | 196 | { |
1da177e4 LT |
197 | dpcm->timer.expires = 1 + jiffies; |
198 | add_timer(&dpcm->timer); | |
199 | } | |
200 | ||
4a4d2cfd | 201 | static inline void snd_card_dummy_pcm_timer_stop(struct snd_dummy_pcm *dpcm) |
1da177e4 | 202 | { |
1da177e4 LT |
203 | del_timer(&dpcm->timer); |
204 | } | |
205 | ||
4a4d2cfd | 206 | static int snd_card_dummy_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
1da177e4 | 207 | { |
4a4d2cfd TI |
208 | struct snd_pcm_runtime *runtime = substream->runtime; |
209 | struct snd_dummy_pcm *dpcm = runtime->private_data; | |
c8eb6ba1 | 210 | int err = 0; |
1da177e4 | 211 | |
c8eb6ba1 | 212 | spin_lock(&dpcm->lock); |
6e65c1cc TI |
213 | switch (cmd) { |
214 | case SNDRV_PCM_TRIGGER_START: | |
215 | case SNDRV_PCM_TRIGGER_RESUME: | |
c8eb6ba1 | 216 | snd_card_dummy_pcm_timer_start(dpcm); |
6e65c1cc TI |
217 | break; |
218 | case SNDRV_PCM_TRIGGER_STOP: | |
219 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
c8eb6ba1 | 220 | snd_card_dummy_pcm_timer_stop(dpcm); |
6e65c1cc TI |
221 | break; |
222 | default: | |
c8eb6ba1 | 223 | err = -EINVAL; |
6e65c1cc | 224 | break; |
1da177e4 | 225 | } |
c8eb6ba1 | 226 | spin_unlock(&dpcm->lock); |
6e65c1cc | 227 | return 0; |
1da177e4 LT |
228 | } |
229 | ||
4a4d2cfd | 230 | static int snd_card_dummy_pcm_prepare(struct snd_pcm_substream *substream) |
1da177e4 | 231 | { |
4a4d2cfd TI |
232 | struct snd_pcm_runtime *runtime = substream->runtime; |
233 | struct snd_dummy_pcm *dpcm = runtime->private_data; | |
1da177e4 LT |
234 | unsigned int bps; |
235 | ||
236 | bps = runtime->rate * runtime->channels; | |
237 | bps *= snd_pcm_format_width(runtime->format); | |
238 | bps /= 8; | |
239 | if (bps <= 0) | |
240 | return -EINVAL; | |
241 | dpcm->pcm_bps = bps; | |
242 | dpcm->pcm_jiffie = bps / HZ; | |
243 | dpcm->pcm_size = snd_pcm_lib_buffer_bytes(substream); | |
244 | dpcm->pcm_count = snd_pcm_lib_period_bytes(substream); | |
245 | dpcm->pcm_irq_pos = 0; | |
246 | dpcm->pcm_buf_pos = 0; | |
247 | return 0; | |
248 | } | |
249 | ||
1da177e4 LT |
250 | static void snd_card_dummy_pcm_timer_function(unsigned long data) |
251 | { | |
4a4d2cfd | 252 | struct snd_dummy_pcm *dpcm = (struct snd_dummy_pcm *)data; |
b32425ac | 253 | unsigned long flags; |
1da177e4 | 254 | |
b32425ac | 255 | spin_lock_irqsave(&dpcm->lock, flags); |
1da177e4 LT |
256 | dpcm->timer.expires = 1 + jiffies; |
257 | add_timer(&dpcm->timer); | |
1da177e4 LT |
258 | dpcm->pcm_irq_pos += dpcm->pcm_jiffie; |
259 | dpcm->pcm_buf_pos += dpcm->pcm_jiffie; | |
260 | dpcm->pcm_buf_pos %= dpcm->pcm_size; | |
261 | if (dpcm->pcm_irq_pos >= dpcm->pcm_count) { | |
262 | dpcm->pcm_irq_pos %= dpcm->pcm_count; | |
b32425ac | 263 | spin_unlock_irqrestore(&dpcm->lock, flags); |
1da177e4 | 264 | snd_pcm_period_elapsed(dpcm->substream); |
b32425ac TI |
265 | } else |
266 | spin_unlock_irqrestore(&dpcm->lock, flags); | |
1da177e4 LT |
267 | } |
268 | ||
4a4d2cfd | 269 | static snd_pcm_uframes_t snd_card_dummy_pcm_pointer(struct snd_pcm_substream *substream) |
1da177e4 | 270 | { |
4a4d2cfd TI |
271 | struct snd_pcm_runtime *runtime = substream->runtime; |
272 | struct snd_dummy_pcm *dpcm = runtime->private_data; | |
1da177e4 LT |
273 | |
274 | return bytes_to_frames(runtime, dpcm->pcm_buf_pos); | |
275 | } | |
276 | ||
4a4d2cfd | 277 | static struct snd_pcm_hardware snd_card_dummy_playback = |
1da177e4 LT |
278 | { |
279 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | | |
6e65c1cc | 280 | SNDRV_PCM_INFO_RESUME | SNDRV_PCM_INFO_MMAP_VALID), |
1da177e4 LT |
281 | .formats = USE_FORMATS, |
282 | .rates = USE_RATE, | |
283 | .rate_min = USE_RATE_MIN, | |
284 | .rate_max = USE_RATE_MAX, | |
285 | .channels_min = USE_CHANNELS_MIN, | |
286 | .channels_max = USE_CHANNELS_MAX, | |
287 | .buffer_bytes_max = MAX_BUFFER_SIZE, | |
288 | .period_bytes_min = 64, | |
e05d6964 | 289 | .period_bytes_max = MAX_PERIOD_SIZE, |
1da177e4 LT |
290 | .periods_min = USE_PERIODS_MIN, |
291 | .periods_max = USE_PERIODS_MAX, | |
292 | .fifo_size = 0, | |
293 | }; | |
294 | ||
4a4d2cfd | 295 | static struct snd_pcm_hardware snd_card_dummy_capture = |
1da177e4 LT |
296 | { |
297 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | | |
6e65c1cc | 298 | SNDRV_PCM_INFO_RESUME | SNDRV_PCM_INFO_MMAP_VALID), |
1da177e4 LT |
299 | .formats = USE_FORMATS, |
300 | .rates = USE_RATE, | |
301 | .rate_min = USE_RATE_MIN, | |
302 | .rate_max = USE_RATE_MAX, | |
303 | .channels_min = USE_CHANNELS_MIN, | |
304 | .channels_max = USE_CHANNELS_MAX, | |
305 | .buffer_bytes_max = MAX_BUFFER_SIZE, | |
306 | .period_bytes_min = 64, | |
2ad5dd8d | 307 | .period_bytes_max = MAX_PERIOD_SIZE, |
1da177e4 LT |
308 | .periods_min = USE_PERIODS_MIN, |
309 | .periods_max = USE_PERIODS_MAX, | |
310 | .fifo_size = 0, | |
311 | }; | |
312 | ||
4a4d2cfd | 313 | static void snd_card_dummy_runtime_free(struct snd_pcm_runtime *runtime) |
1da177e4 | 314 | { |
c8eb6ba1 | 315 | kfree(runtime->private_data); |
1da177e4 LT |
316 | } |
317 | ||
4a4d2cfd TI |
318 | static int snd_card_dummy_hw_params(struct snd_pcm_substream *substream, |
319 | struct snd_pcm_hw_params *hw_params) | |
1da177e4 LT |
320 | { |
321 | return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); | |
322 | } | |
323 | ||
4a4d2cfd | 324 | static int snd_card_dummy_hw_free(struct snd_pcm_substream *substream) |
1da177e4 LT |
325 | { |
326 | return snd_pcm_lib_free_pages(substream); | |
327 | } | |
328 | ||
4a4d2cfd | 329 | static struct snd_dummy_pcm *new_pcm_stream(struct snd_pcm_substream *substream) |
1da177e4 | 330 | { |
4a4d2cfd | 331 | struct snd_dummy_pcm *dpcm; |
1da177e4 | 332 | |
561b220a | 333 | dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); |
c8eb6ba1 TI |
334 | if (! dpcm) |
335 | return dpcm; | |
1da177e4 LT |
336 | init_timer(&dpcm->timer); |
337 | dpcm->timer.data = (unsigned long) dpcm; | |
338 | dpcm->timer.function = snd_card_dummy_pcm_timer_function; | |
339 | spin_lock_init(&dpcm->lock); | |
340 | dpcm->substream = substream; | |
c8eb6ba1 TI |
341 | return dpcm; |
342 | } | |
343 | ||
4a4d2cfd | 344 | static int snd_card_dummy_playback_open(struct snd_pcm_substream *substream) |
c8eb6ba1 | 345 | { |
4a4d2cfd TI |
346 | struct snd_pcm_runtime *runtime = substream->runtime; |
347 | struct snd_dummy_pcm *dpcm; | |
c8eb6ba1 TI |
348 | int err; |
349 | ||
350 | if ((dpcm = new_pcm_stream(substream)) == NULL) | |
351 | return -ENOMEM; | |
1da177e4 LT |
352 | runtime->private_data = dpcm; |
353 | runtime->private_free = snd_card_dummy_runtime_free; | |
354 | runtime->hw = snd_card_dummy_playback; | |
355 | if (substream->pcm->device & 1) { | |
356 | runtime->hw.info &= ~SNDRV_PCM_INFO_INTERLEAVED; | |
357 | runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED; | |
358 | } | |
359 | if (substream->pcm->device & 2) | |
360 | runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP|SNDRV_PCM_INFO_MMAP_VALID); | |
361 | if ((err = add_playback_constraints(runtime)) < 0) { | |
362 | kfree(dpcm); | |
363 | return err; | |
364 | } | |
365 | ||
366 | return 0; | |
367 | } | |
368 | ||
4a4d2cfd | 369 | static int snd_card_dummy_capture_open(struct snd_pcm_substream *substream) |
1da177e4 | 370 | { |
4a4d2cfd TI |
371 | struct snd_pcm_runtime *runtime = substream->runtime; |
372 | struct snd_dummy_pcm *dpcm; | |
1da177e4 LT |
373 | int err; |
374 | ||
c8eb6ba1 | 375 | if ((dpcm = new_pcm_stream(substream)) == NULL) |
1da177e4 | 376 | return -ENOMEM; |
1da177e4 LT |
377 | runtime->private_data = dpcm; |
378 | runtime->private_free = snd_card_dummy_runtime_free; | |
379 | runtime->hw = snd_card_dummy_capture; | |
380 | if (substream->pcm->device == 1) { | |
381 | runtime->hw.info &= ~SNDRV_PCM_INFO_INTERLEAVED; | |
382 | runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED; | |
383 | } | |
384 | if (substream->pcm->device & 2) | |
385 | runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP|SNDRV_PCM_INFO_MMAP_VALID); | |
386 | if ((err = add_capture_constraints(runtime)) < 0) { | |
387 | kfree(dpcm); | |
388 | return err; | |
389 | } | |
390 | ||
391 | return 0; | |
392 | } | |
393 | ||
4a4d2cfd | 394 | static int snd_card_dummy_playback_close(struct snd_pcm_substream *substream) |
1da177e4 LT |
395 | { |
396 | return 0; | |
397 | } | |
398 | ||
4a4d2cfd | 399 | static int snd_card_dummy_capture_close(struct snd_pcm_substream *substream) |
1da177e4 LT |
400 | { |
401 | return 0; | |
402 | } | |
403 | ||
4a4d2cfd | 404 | static struct snd_pcm_ops snd_card_dummy_playback_ops = { |
1da177e4 LT |
405 | .open = snd_card_dummy_playback_open, |
406 | .close = snd_card_dummy_playback_close, | |
407 | .ioctl = snd_pcm_lib_ioctl, | |
408 | .hw_params = snd_card_dummy_hw_params, | |
409 | .hw_free = snd_card_dummy_hw_free, | |
c8eb6ba1 TI |
410 | .prepare = snd_card_dummy_pcm_prepare, |
411 | .trigger = snd_card_dummy_pcm_trigger, | |
412 | .pointer = snd_card_dummy_pcm_pointer, | |
1da177e4 LT |
413 | }; |
414 | ||
4a4d2cfd | 415 | static struct snd_pcm_ops snd_card_dummy_capture_ops = { |
1da177e4 LT |
416 | .open = snd_card_dummy_capture_open, |
417 | .close = snd_card_dummy_capture_close, | |
418 | .ioctl = snd_pcm_lib_ioctl, | |
419 | .hw_params = snd_card_dummy_hw_params, | |
420 | .hw_free = snd_card_dummy_hw_free, | |
c8eb6ba1 TI |
421 | .prepare = snd_card_dummy_pcm_prepare, |
422 | .trigger = snd_card_dummy_pcm_trigger, | |
423 | .pointer = snd_card_dummy_pcm_pointer, | |
1da177e4 LT |
424 | }; |
425 | ||
4a4d2cfd | 426 | static int __init snd_card_dummy_pcm(struct snd_dummy *dummy, int device, int substreams) |
1da177e4 | 427 | { |
4a4d2cfd | 428 | struct snd_pcm *pcm; |
1da177e4 LT |
429 | int err; |
430 | ||
4a4d2cfd TI |
431 | if ((err = snd_pcm_new(dummy->card, "Dummy PCM", device, |
432 | substreams, substreams, &pcm)) < 0) | |
1da177e4 | 433 | return err; |
6e65c1cc | 434 | dummy->pcm = pcm; |
1da177e4 LT |
435 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_card_dummy_playback_ops); |
436 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_dummy_capture_ops); | |
437 | pcm->private_data = dummy; | |
438 | pcm->info_flags = 0; | |
439 | strcpy(pcm->name, "Dummy PCM"); | |
440 | snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, | |
441 | snd_dma_continuous_data(GFP_KERNEL), | |
442 | 0, 64*1024); | |
443 | return 0; | |
444 | } | |
445 | ||
446 | #define DUMMY_VOLUME(xname, xindex, addr) \ | |
fb567a8e TI |
447 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ |
448 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \ | |
449 | .name = xname, .index = xindex, \ | |
1da177e4 LT |
450 | .info = snd_dummy_volume_info, \ |
451 | .get = snd_dummy_volume_get, .put = snd_dummy_volume_put, \ | |
fb567a8e TI |
452 | .private_value = addr, \ |
453 | .tlv = { .p = db_scale_dummy } } | |
1da177e4 | 454 | |
4a4d2cfd TI |
455 | static int snd_dummy_volume_info(struct snd_kcontrol *kcontrol, |
456 | struct snd_ctl_elem_info *uinfo) | |
1da177e4 LT |
457 | { |
458 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
459 | uinfo->count = 2; | |
460 | uinfo->value.integer.min = -50; | |
461 | uinfo->value.integer.max = 100; | |
462 | return 0; | |
463 | } | |
464 | ||
4a4d2cfd TI |
465 | static int snd_dummy_volume_get(struct snd_kcontrol *kcontrol, |
466 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 467 | { |
4a4d2cfd | 468 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
469 | int addr = kcontrol->private_value; |
470 | ||
c8eb6ba1 | 471 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
472 | ucontrol->value.integer.value[0] = dummy->mixer_volume[addr][0]; |
473 | ucontrol->value.integer.value[1] = dummy->mixer_volume[addr][1]; | |
c8eb6ba1 | 474 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
475 | return 0; |
476 | } | |
477 | ||
4a4d2cfd TI |
478 | static int snd_dummy_volume_put(struct snd_kcontrol *kcontrol, |
479 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 480 | { |
4a4d2cfd | 481 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
482 | int change, addr = kcontrol->private_value; |
483 | int left, right; | |
484 | ||
485 | left = ucontrol->value.integer.value[0]; | |
486 | if (left < -50) | |
487 | left = -50; | |
488 | if (left > 100) | |
489 | left = 100; | |
490 | right = ucontrol->value.integer.value[1]; | |
491 | if (right < -50) | |
492 | right = -50; | |
493 | if (right > 100) | |
494 | right = 100; | |
c8eb6ba1 | 495 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
496 | change = dummy->mixer_volume[addr][0] != left || |
497 | dummy->mixer_volume[addr][1] != right; | |
498 | dummy->mixer_volume[addr][0] = left; | |
499 | dummy->mixer_volume[addr][1] = right; | |
c8eb6ba1 | 500 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
501 | return change; |
502 | } | |
503 | ||
fb567a8e TI |
504 | static DECLARE_TLV_DB_SCALE(db_scale_dummy, -4500, 30, 0); |
505 | ||
1da177e4 LT |
506 | #define DUMMY_CAPSRC(xname, xindex, addr) \ |
507 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ | |
508 | .info = snd_dummy_capsrc_info, \ | |
509 | .get = snd_dummy_capsrc_get, .put = snd_dummy_capsrc_put, \ | |
510 | .private_value = addr } | |
511 | ||
4a4d2cfd TI |
512 | static int snd_dummy_capsrc_info(struct snd_kcontrol *kcontrol, |
513 | struct snd_ctl_elem_info *uinfo) | |
1da177e4 LT |
514 | { |
515 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
516 | uinfo->count = 2; | |
517 | uinfo->value.integer.min = 0; | |
518 | uinfo->value.integer.max = 1; | |
519 | return 0; | |
520 | } | |
521 | ||
4a4d2cfd TI |
522 | static int snd_dummy_capsrc_get(struct snd_kcontrol *kcontrol, |
523 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 524 | { |
4a4d2cfd | 525 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
526 | int addr = kcontrol->private_value; |
527 | ||
c8eb6ba1 | 528 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
529 | ucontrol->value.integer.value[0] = dummy->capture_source[addr][0]; |
530 | ucontrol->value.integer.value[1] = dummy->capture_source[addr][1]; | |
c8eb6ba1 | 531 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
532 | return 0; |
533 | } | |
534 | ||
4a4d2cfd | 535 | static int snd_dummy_capsrc_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1da177e4 | 536 | { |
4a4d2cfd | 537 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
538 | int change, addr = kcontrol->private_value; |
539 | int left, right; | |
540 | ||
541 | left = ucontrol->value.integer.value[0] & 1; | |
542 | right = ucontrol->value.integer.value[1] & 1; | |
c8eb6ba1 | 543 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
544 | change = dummy->capture_source[addr][0] != left && |
545 | dummy->capture_source[addr][1] != right; | |
546 | dummy->capture_source[addr][0] = left; | |
547 | dummy->capture_source[addr][1] = right; | |
c8eb6ba1 | 548 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
549 | return change; |
550 | } | |
551 | ||
4a4d2cfd | 552 | static struct snd_kcontrol_new snd_dummy_controls[] = { |
1da177e4 LT |
553 | DUMMY_VOLUME("Master Volume", 0, MIXER_ADDR_MASTER), |
554 | DUMMY_CAPSRC("Master Capture Switch", 0, MIXER_ADDR_MASTER), | |
555 | DUMMY_VOLUME("Synth Volume", 0, MIXER_ADDR_SYNTH), | |
e05d6964 | 556 | DUMMY_CAPSRC("Synth Capture Switch", 0, MIXER_ADDR_SYNTH), |
1da177e4 | 557 | DUMMY_VOLUME("Line Volume", 0, MIXER_ADDR_LINE), |
e05d6964 | 558 | DUMMY_CAPSRC("Line Capture Switch", 0, MIXER_ADDR_LINE), |
1da177e4 | 559 | DUMMY_VOLUME("Mic Volume", 0, MIXER_ADDR_MIC), |
e05d6964 | 560 | DUMMY_CAPSRC("Mic Capture Switch", 0, MIXER_ADDR_MIC), |
1da177e4 | 561 | DUMMY_VOLUME("CD Volume", 0, MIXER_ADDR_CD), |
e05d6964 | 562 | DUMMY_CAPSRC("CD Capture Switch", 0, MIXER_ADDR_CD) |
1da177e4 LT |
563 | }; |
564 | ||
4a4d2cfd | 565 | static int __init snd_card_dummy_new_mixer(struct snd_dummy *dummy) |
1da177e4 | 566 | { |
4a4d2cfd | 567 | struct snd_card *card = dummy->card; |
1da177e4 LT |
568 | unsigned int idx; |
569 | int err; | |
570 | ||
571 | snd_assert(dummy != NULL, return -EINVAL); | |
572 | spin_lock_init(&dummy->mixer_lock); | |
573 | strcpy(card->mixername, "Dummy Mixer"); | |
574 | ||
575 | for (idx = 0; idx < ARRAY_SIZE(snd_dummy_controls); idx++) { | |
576 | if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_dummy_controls[idx], dummy))) < 0) | |
577 | return err; | |
578 | } | |
579 | return 0; | |
580 | } | |
581 | ||
6e65c1cc | 582 | static int __init snd_dummy_probe(struct platform_device *devptr) |
1da177e4 | 583 | { |
4a4d2cfd TI |
584 | struct snd_card *card; |
585 | struct snd_dummy *dummy; | |
1da177e4 | 586 | int idx, err; |
6e65c1cc | 587 | int dev = devptr->id; |
1da177e4 | 588 | |
1da177e4 | 589 | card = snd_card_new(index[dev], id[dev], THIS_MODULE, |
4a4d2cfd | 590 | sizeof(struct snd_dummy)); |
1da177e4 LT |
591 | if (card == NULL) |
592 | return -ENOMEM; | |
4a4d2cfd | 593 | dummy = card->private_data; |
1da177e4 LT |
594 | dummy->card = card; |
595 | for (idx = 0; idx < MAX_PCM_DEVICES && idx < pcm_devs[dev]; idx++) { | |
596 | if (pcm_substreams[dev] < 1) | |
597 | pcm_substreams[dev] = 1; | |
598 | if (pcm_substreams[dev] > MAX_PCM_SUBSTREAMS) | |
599 | pcm_substreams[dev] = MAX_PCM_SUBSTREAMS; | |
600 | if ((err = snd_card_dummy_pcm(dummy, idx, pcm_substreams[dev])) < 0) | |
601 | goto __nodev; | |
602 | } | |
603 | if ((err = snd_card_dummy_new_mixer(dummy)) < 0) | |
604 | goto __nodev; | |
605 | strcpy(card->driver, "Dummy"); | |
606 | strcpy(card->shortname, "Dummy"); | |
607 | sprintf(card->longname, "Dummy %i", dev + 1); | |
16dab54b | 608 | |
6e65c1cc | 609 | snd_card_set_dev(card, &devptr->dev); |
16dab54b | 610 | |
1da177e4 | 611 | if ((err = snd_card_register(card)) == 0) { |
6e65c1cc | 612 | platform_set_drvdata(devptr, card); |
1da177e4 LT |
613 | return 0; |
614 | } | |
615 | __nodev: | |
616 | snd_card_free(card); | |
617 | return err; | |
618 | } | |
619 | ||
6e65c1cc TI |
620 | static int snd_dummy_remove(struct platform_device *devptr) |
621 | { | |
622 | snd_card_free(platform_get_drvdata(devptr)); | |
623 | platform_set_drvdata(devptr, NULL); | |
624 | return 0; | |
625 | } | |
626 | ||
627 | #ifdef CONFIG_PM | |
628 | static int snd_dummy_suspend(struct platform_device *pdev, pm_message_t state) | |
1da177e4 | 629 | { |
6e65c1cc TI |
630 | struct snd_card *card = platform_get_drvdata(pdev); |
631 | struct snd_dummy *dummy = card->private_data; | |
1da177e4 | 632 | |
6e65c1cc TI |
633 | snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
634 | snd_pcm_suspend_all(dummy->pcm); | |
635 | return 0; | |
636 | } | |
637 | ||
638 | static int snd_dummy_resume(struct platform_device *pdev) | |
639 | { | |
640 | struct snd_card *card = platform_get_drvdata(pdev); | |
641 | ||
642 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); | |
643 | return 0; | |
644 | } | |
645 | #endif | |
646 | ||
647 | #define SND_DUMMY_DRIVER "snd_dummy" | |
648 | ||
649 | static struct platform_driver snd_dummy_driver = { | |
650 | .probe = snd_dummy_probe, | |
651 | .remove = snd_dummy_remove, | |
652 | #ifdef CONFIG_PM | |
653 | .suspend = snd_dummy_suspend, | |
654 | .resume = snd_dummy_resume, | |
1da177e4 | 655 | #endif |
6e65c1cc TI |
656 | .driver = { |
657 | .name = SND_DUMMY_DRIVER | |
658 | }, | |
659 | }; | |
660 | ||
f7a9275d CL |
661 | static void __init_or_module snd_dummy_unregister_all(void) |
662 | { | |
663 | int i; | |
664 | ||
665 | for (i = 0; i < ARRAY_SIZE(devices); ++i) | |
666 | platform_device_unregister(devices[i]); | |
667 | platform_driver_unregister(&snd_dummy_driver); | |
668 | } | |
669 | ||
6e65c1cc TI |
670 | static int __init alsa_card_dummy_init(void) |
671 | { | |
672 | int i, cards, err; | |
673 | ||
674 | if ((err = platform_driver_register(&snd_dummy_driver)) < 0) | |
675 | return err; | |
676 | ||
677 | cards = 0; | |
8278ca8f | 678 | for (i = 0; i < SNDRV_CARDS; i++) { |
6e65c1cc | 679 | struct platform_device *device; |
8278ca8f TI |
680 | if (! enable[i]) |
681 | continue; | |
6e65c1cc TI |
682 | device = platform_device_register_simple(SND_DUMMY_DRIVER, |
683 | i, NULL, 0); | |
a182ee98 RH |
684 | if (IS_ERR(device)) |
685 | continue; | |
7152447d RH |
686 | if (!platform_get_drvdata(device)) { |
687 | platform_device_unregister(device); | |
688 | continue; | |
689 | } | |
f7a9275d | 690 | devices[i] = device; |
1da177e4 LT |
691 | cards++; |
692 | } | |
693 | if (!cards) { | |
694 | #ifdef MODULE | |
695 | printk(KERN_ERR "Dummy soundcard not found or device busy\n"); | |
696 | #endif | |
a182ee98 RH |
697 | snd_dummy_unregister_all(); |
698 | return -ENODEV; | |
1da177e4 LT |
699 | } |
700 | return 0; | |
701 | } | |
702 | ||
703 | static void __exit alsa_card_dummy_exit(void) | |
704 | { | |
f7a9275d | 705 | snd_dummy_unregister_all(); |
1da177e4 LT |
706 | } |
707 | ||
708 | module_init(alsa_card_dummy_init) | |
709 | module_exit(alsa_card_dummy_exit) |