Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Dummy soundcard | |
c1017a4c | 3 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
1da177e4 LT |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | * | |
19 | */ | |
20 | ||
1da177e4 | 21 | #include <linux/init.h> |
6e65c1cc TI |
22 | #include <linux/err.h> |
23 | #include <linux/platform_device.h> | |
1da177e4 LT |
24 | #include <linux/jiffies.h> |
25 | #include <linux/slab.h> | |
26 | #include <linux/time.h> | |
27 | #include <linux/wait.h> | |
28 | #include <linux/moduleparam.h> | |
29 | #include <sound/core.h> | |
30 | #include <sound/control.h> | |
fb567a8e | 31 | #include <sound/tlv.h> |
1da177e4 LT |
32 | #include <sound/pcm.h> |
33 | #include <sound/rawmidi.h> | |
34 | #include <sound/initval.h> | |
35 | ||
c1017a4c | 36 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); |
1da177e4 LT |
37 | MODULE_DESCRIPTION("Dummy soundcard (/dev/null)"); |
38 | MODULE_LICENSE("GPL"); | |
39 | MODULE_SUPPORTED_DEVICE("{{ALSA,Dummy soundcard}}"); | |
40 | ||
41 | #define MAX_PCM_DEVICES 4 | |
42 | #define MAX_PCM_SUBSTREAMS 16 | |
43 | #define MAX_MIDI_DEVICES 2 | |
44 | ||
45 | #if 0 /* emu10k1 emulation */ | |
46 | #define MAX_BUFFER_SIZE (128 * 1024) | |
4a4d2cfd | 47 | static int emu10k1_playback_constraints(struct snd_pcm_runtime *runtime) |
1da177e4 LT |
48 | { |
49 | int err; | |
1a11cb64 JK |
50 | err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); |
51 | if (err < 0) | |
1da177e4 | 52 | return err; |
1a11cb64 | 53 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 256, UINT_MAX); |
e78521f3 | 54 | if (err < 0) |
1da177e4 LT |
55 | return err; |
56 | return 0; | |
57 | } | |
58 | #define add_playback_constraints emu10k1_playback_constraints | |
59 | #endif | |
60 | ||
61 | #if 0 /* RME9652 emulation */ | |
62 | #define MAX_BUFFER_SIZE (26 * 64 * 1024) | |
63 | #define USE_FORMATS SNDRV_PCM_FMTBIT_S32_LE | |
64 | #define USE_CHANNELS_MIN 26 | |
65 | #define USE_CHANNELS_MAX 26 | |
66 | #define USE_PERIODS_MIN 2 | |
67 | #define USE_PERIODS_MAX 2 | |
68 | #endif | |
69 | ||
70 | #if 0 /* ICE1712 emulation */ | |
71 | #define MAX_BUFFER_SIZE (256 * 1024) | |
72 | #define USE_FORMATS SNDRV_PCM_FMTBIT_S32_LE | |
73 | #define USE_CHANNELS_MIN 10 | |
74 | #define USE_CHANNELS_MAX 10 | |
75 | #define USE_PERIODS_MIN 1 | |
76 | #define USE_PERIODS_MAX 1024 | |
77 | #endif | |
78 | ||
79 | #if 0 /* UDA1341 emulation */ | |
80 | #define MAX_BUFFER_SIZE (16380) | |
81 | #define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE | |
82 | #define USE_CHANNELS_MIN 2 | |
83 | #define USE_CHANNELS_MAX 2 | |
84 | #define USE_PERIODS_MIN 2 | |
85 | #define USE_PERIODS_MAX 255 | |
86 | #endif | |
87 | ||
88 | #if 0 /* simple AC97 bridge (intel8x0) with 48kHz AC97 only codec */ | |
89 | #define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE | |
90 | #define USE_CHANNELS_MIN 2 | |
91 | #define USE_CHANNELS_MAX 2 | |
92 | #define USE_RATE SNDRV_PCM_RATE_48000 | |
93 | #define USE_RATE_MIN 48000 | |
94 | #define USE_RATE_MAX 48000 | |
95 | #endif | |
96 | ||
2ad5dd8d JK |
97 | #if 0 /* CA0106 */ |
98 | #define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE | |
99 | #define USE_CHANNELS_MIN 2 | |
100 | #define USE_CHANNELS_MAX 2 | |
101 | #define USE_RATE (SNDRV_PCM_RATE_48000|SNDRV_PCM_RATE_96000|SNDRV_PCM_RATE_192000) | |
102 | #define USE_RATE_MIN 48000 | |
103 | #define USE_RATE_MAX 192000 | |
104 | #define MAX_BUFFER_SIZE ((65536-64)*8) | |
105 | #define MAX_PERIOD_SIZE (65536-64) | |
106 | #define USE_PERIODS_MIN 2 | |
107 | #define USE_PERIODS_MAX 8 | |
108 | #endif | |
109 | ||
1da177e4 LT |
110 | |
111 | /* defaults */ | |
112 | #ifndef MAX_BUFFER_SIZE | |
113 | #define MAX_BUFFER_SIZE (64*1024) | |
114 | #endif | |
2ad5dd8d JK |
115 | #ifndef MAX_PERIOD_SIZE |
116 | #define MAX_PERIOD_SIZE MAX_BUFFER_SIZE | |
117 | #endif | |
1da177e4 LT |
118 | #ifndef USE_FORMATS |
119 | #define USE_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE) | |
120 | #endif | |
121 | #ifndef USE_RATE | |
122 | #define USE_RATE SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000 | |
123 | #define USE_RATE_MIN 5500 | |
124 | #define USE_RATE_MAX 48000 | |
125 | #endif | |
126 | #ifndef USE_CHANNELS_MIN | |
127 | #define USE_CHANNELS_MIN 1 | |
128 | #endif | |
129 | #ifndef USE_CHANNELS_MAX | |
130 | #define USE_CHANNELS_MAX 2 | |
131 | #endif | |
132 | #ifndef USE_PERIODS_MIN | |
133 | #define USE_PERIODS_MIN 1 | |
134 | #endif | |
135 | #ifndef USE_PERIODS_MAX | |
136 | #define USE_PERIODS_MAX 1024 | |
137 | #endif | |
138 | #ifndef add_playback_constraints | |
139 | #define add_playback_constraints(x) 0 | |
140 | #endif | |
141 | #ifndef add_capture_constraints | |
142 | #define add_capture_constraints(x) 0 | |
143 | #endif | |
144 | ||
145 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ | |
146 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ | |
147 | static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0}; | |
148 | static int pcm_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1}; | |
149 | static int pcm_substreams[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 8}; | |
150 | //static int midi_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2}; | |
151 | ||
152 | module_param_array(index, int, NULL, 0444); | |
153 | MODULE_PARM_DESC(index, "Index value for dummy soundcard."); | |
154 | module_param_array(id, charp, NULL, 0444); | |
155 | MODULE_PARM_DESC(id, "ID string for dummy soundcard."); | |
156 | module_param_array(enable, bool, NULL, 0444); | |
157 | MODULE_PARM_DESC(enable, "Enable this dummy soundcard."); | |
158 | module_param_array(pcm_devs, int, NULL, 0444); | |
159 | MODULE_PARM_DESC(pcm_devs, "PCM devices # (0-4) for dummy driver."); | |
160 | module_param_array(pcm_substreams, int, NULL, 0444); | |
161 | MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-16) for dummy driver."); | |
162 | //module_param_array(midi_devs, int, NULL, 0444); | |
163 | //MODULE_PARM_DESC(midi_devs, "MIDI devices # (0-2) for dummy driver."); | |
164 | ||
f7a9275d CL |
165 | static struct platform_device *devices[SNDRV_CARDS]; |
166 | ||
1da177e4 LT |
167 | #define MIXER_ADDR_MASTER 0 |
168 | #define MIXER_ADDR_LINE 1 | |
169 | #define MIXER_ADDR_MIC 2 | |
170 | #define MIXER_ADDR_SYNTH 3 | |
171 | #define MIXER_ADDR_CD 4 | |
172 | #define MIXER_ADDR_LAST 4 | |
173 | ||
4a4d2cfd TI |
174 | struct snd_dummy { |
175 | struct snd_card *card; | |
6e65c1cc | 176 | struct snd_pcm *pcm; |
1da177e4 LT |
177 | spinlock_t mixer_lock; |
178 | int mixer_volume[MIXER_ADDR_LAST+1][2]; | |
179 | int capture_source[MIXER_ADDR_LAST+1][2]; | |
4a4d2cfd | 180 | }; |
1da177e4 | 181 | |
4a4d2cfd TI |
182 | struct snd_dummy_pcm { |
183 | struct snd_dummy *dummy; | |
1da177e4 LT |
184 | spinlock_t lock; |
185 | struct timer_list timer; | |
53463a83 Aİ |
186 | unsigned int pcm_buffer_size; |
187 | unsigned int pcm_period_size; | |
1da177e4 | 188 | unsigned int pcm_bps; /* bytes per second */ |
53463a83 | 189 | unsigned int pcm_hz; /* HZ */ |
1da177e4 LT |
190 | unsigned int pcm_irq_pos; /* IRQ position */ |
191 | unsigned int pcm_buf_pos; /* position in buffer */ | |
4a4d2cfd TI |
192 | struct snd_pcm_substream *substream; |
193 | }; | |
1da177e4 | 194 | |
1da177e4 | 195 | |
4a4d2cfd | 196 | static inline void snd_card_dummy_pcm_timer_start(struct snd_dummy_pcm *dpcm) |
1da177e4 | 197 | { |
1da177e4 LT |
198 | dpcm->timer.expires = 1 + jiffies; |
199 | add_timer(&dpcm->timer); | |
200 | } | |
201 | ||
4a4d2cfd | 202 | static inline void snd_card_dummy_pcm_timer_stop(struct snd_dummy_pcm *dpcm) |
1da177e4 | 203 | { |
1da177e4 LT |
204 | del_timer(&dpcm->timer); |
205 | } | |
206 | ||
4a4d2cfd | 207 | static int snd_card_dummy_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
1da177e4 | 208 | { |
4a4d2cfd TI |
209 | struct snd_pcm_runtime *runtime = substream->runtime; |
210 | struct snd_dummy_pcm *dpcm = runtime->private_data; | |
c8eb6ba1 | 211 | int err = 0; |
1da177e4 | 212 | |
c8eb6ba1 | 213 | spin_lock(&dpcm->lock); |
6e65c1cc TI |
214 | switch (cmd) { |
215 | case SNDRV_PCM_TRIGGER_START: | |
216 | case SNDRV_PCM_TRIGGER_RESUME: | |
c8eb6ba1 | 217 | snd_card_dummy_pcm_timer_start(dpcm); |
6e65c1cc TI |
218 | break; |
219 | case SNDRV_PCM_TRIGGER_STOP: | |
220 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
c8eb6ba1 | 221 | snd_card_dummy_pcm_timer_stop(dpcm); |
6e65c1cc TI |
222 | break; |
223 | default: | |
c8eb6ba1 | 224 | err = -EINVAL; |
6e65c1cc | 225 | break; |
1da177e4 | 226 | } |
c8eb6ba1 | 227 | spin_unlock(&dpcm->lock); |
6e65c1cc | 228 | return 0; |
1da177e4 LT |
229 | } |
230 | ||
4a4d2cfd | 231 | static int snd_card_dummy_pcm_prepare(struct snd_pcm_substream *substream) |
1da177e4 | 232 | { |
4a4d2cfd TI |
233 | struct snd_pcm_runtime *runtime = substream->runtime; |
234 | struct snd_dummy_pcm *dpcm = runtime->private_data; | |
369b240d RK |
235 | int bps; |
236 | ||
237 | bps = snd_pcm_format_width(runtime->format) * runtime->rate * | |
238 | runtime->channels / 8; | |
1da177e4 | 239 | |
1da177e4 LT |
240 | if (bps <= 0) |
241 | return -EINVAL; | |
369b240d | 242 | |
1da177e4 | 243 | dpcm->pcm_bps = bps; |
53463a83 Aİ |
244 | dpcm->pcm_hz = HZ; |
245 | dpcm->pcm_buffer_size = snd_pcm_lib_buffer_bytes(substream); | |
246 | dpcm->pcm_period_size = snd_pcm_lib_period_bytes(substream); | |
1da177e4 LT |
247 | dpcm->pcm_irq_pos = 0; |
248 | dpcm->pcm_buf_pos = 0; | |
53463a83 Aİ |
249 | |
250 | snd_pcm_format_set_silence(runtime->format, runtime->dma_area, | |
251 | bytes_to_samples(runtime, runtime->dma_bytes)); | |
252 | ||
1da177e4 LT |
253 | return 0; |
254 | } | |
255 | ||
1da177e4 LT |
256 | static void snd_card_dummy_pcm_timer_function(unsigned long data) |
257 | { | |
4a4d2cfd | 258 | struct snd_dummy_pcm *dpcm = (struct snd_dummy_pcm *)data; |
b32425ac | 259 | unsigned long flags; |
1da177e4 | 260 | |
b32425ac | 261 | spin_lock_irqsave(&dpcm->lock, flags); |
1da177e4 LT |
262 | dpcm->timer.expires = 1 + jiffies; |
263 | add_timer(&dpcm->timer); | |
53463a83 | 264 | dpcm->pcm_irq_pos += dpcm->pcm_bps; |
470f23b8 Aİ |
265 | dpcm->pcm_buf_pos += dpcm->pcm_bps; |
266 | dpcm->pcm_buf_pos %= dpcm->pcm_buffer_size * dpcm->pcm_hz; | |
53463a83 Aİ |
267 | if (dpcm->pcm_irq_pos >= dpcm->pcm_period_size * dpcm->pcm_hz) { |
268 | dpcm->pcm_irq_pos %= dpcm->pcm_period_size * dpcm->pcm_hz; | |
b32425ac | 269 | spin_unlock_irqrestore(&dpcm->lock, flags); |
1da177e4 | 270 | snd_pcm_period_elapsed(dpcm->substream); |
b32425ac TI |
271 | } else |
272 | spin_unlock_irqrestore(&dpcm->lock, flags); | |
1da177e4 LT |
273 | } |
274 | ||
4a4d2cfd | 275 | static snd_pcm_uframes_t snd_card_dummy_pcm_pointer(struct snd_pcm_substream *substream) |
1da177e4 | 276 | { |
4a4d2cfd TI |
277 | struct snd_pcm_runtime *runtime = substream->runtime; |
278 | struct snd_dummy_pcm *dpcm = runtime->private_data; | |
1da177e4 | 279 | |
470f23b8 | 280 | return bytes_to_frames(runtime, dpcm->pcm_buf_pos / dpcm->pcm_hz); |
1da177e4 LT |
281 | } |
282 | ||
4a4d2cfd | 283 | static struct snd_pcm_hardware snd_card_dummy_playback = |
1da177e4 LT |
284 | { |
285 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | | |
6e65c1cc | 286 | SNDRV_PCM_INFO_RESUME | SNDRV_PCM_INFO_MMAP_VALID), |
1da177e4 LT |
287 | .formats = USE_FORMATS, |
288 | .rates = USE_RATE, | |
289 | .rate_min = USE_RATE_MIN, | |
290 | .rate_max = USE_RATE_MAX, | |
291 | .channels_min = USE_CHANNELS_MIN, | |
292 | .channels_max = USE_CHANNELS_MAX, | |
293 | .buffer_bytes_max = MAX_BUFFER_SIZE, | |
294 | .period_bytes_min = 64, | |
e05d6964 | 295 | .period_bytes_max = MAX_PERIOD_SIZE, |
1da177e4 LT |
296 | .periods_min = USE_PERIODS_MIN, |
297 | .periods_max = USE_PERIODS_MAX, | |
298 | .fifo_size = 0, | |
299 | }; | |
300 | ||
4a4d2cfd | 301 | static struct snd_pcm_hardware snd_card_dummy_capture = |
1da177e4 LT |
302 | { |
303 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | | |
6e65c1cc | 304 | SNDRV_PCM_INFO_RESUME | SNDRV_PCM_INFO_MMAP_VALID), |
1da177e4 LT |
305 | .formats = USE_FORMATS, |
306 | .rates = USE_RATE, | |
307 | .rate_min = USE_RATE_MIN, | |
308 | .rate_max = USE_RATE_MAX, | |
309 | .channels_min = USE_CHANNELS_MIN, | |
310 | .channels_max = USE_CHANNELS_MAX, | |
311 | .buffer_bytes_max = MAX_BUFFER_SIZE, | |
312 | .period_bytes_min = 64, | |
2ad5dd8d | 313 | .period_bytes_max = MAX_PERIOD_SIZE, |
1da177e4 LT |
314 | .periods_min = USE_PERIODS_MIN, |
315 | .periods_max = USE_PERIODS_MAX, | |
316 | .fifo_size = 0, | |
317 | }; | |
318 | ||
4a4d2cfd | 319 | static void snd_card_dummy_runtime_free(struct snd_pcm_runtime *runtime) |
1da177e4 | 320 | { |
c8eb6ba1 | 321 | kfree(runtime->private_data); |
1da177e4 LT |
322 | } |
323 | ||
4a4d2cfd TI |
324 | static int snd_card_dummy_hw_params(struct snd_pcm_substream *substream, |
325 | struct snd_pcm_hw_params *hw_params) | |
1da177e4 LT |
326 | { |
327 | return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); | |
328 | } | |
329 | ||
4a4d2cfd | 330 | static int snd_card_dummy_hw_free(struct snd_pcm_substream *substream) |
1da177e4 LT |
331 | { |
332 | return snd_pcm_lib_free_pages(substream); | |
333 | } | |
334 | ||
4a4d2cfd | 335 | static struct snd_dummy_pcm *new_pcm_stream(struct snd_pcm_substream *substream) |
1da177e4 | 336 | { |
4a4d2cfd | 337 | struct snd_dummy_pcm *dpcm; |
1da177e4 | 338 | |
561b220a | 339 | dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); |
c8eb6ba1 TI |
340 | if (! dpcm) |
341 | return dpcm; | |
1da177e4 LT |
342 | init_timer(&dpcm->timer); |
343 | dpcm->timer.data = (unsigned long) dpcm; | |
344 | dpcm->timer.function = snd_card_dummy_pcm_timer_function; | |
345 | spin_lock_init(&dpcm->lock); | |
346 | dpcm->substream = substream; | |
c8eb6ba1 TI |
347 | return dpcm; |
348 | } | |
349 | ||
4a4d2cfd | 350 | static int snd_card_dummy_playback_open(struct snd_pcm_substream *substream) |
c8eb6ba1 | 351 | { |
4a4d2cfd TI |
352 | struct snd_pcm_runtime *runtime = substream->runtime; |
353 | struct snd_dummy_pcm *dpcm; | |
c8eb6ba1 TI |
354 | int err; |
355 | ||
356 | if ((dpcm = new_pcm_stream(substream)) == NULL) | |
357 | return -ENOMEM; | |
1da177e4 | 358 | runtime->private_data = dpcm; |
54e8e21e | 359 | /* makes the infrastructure responsible for freeing dpcm */ |
1da177e4 LT |
360 | runtime->private_free = snd_card_dummy_runtime_free; |
361 | runtime->hw = snd_card_dummy_playback; | |
362 | if (substream->pcm->device & 1) { | |
363 | runtime->hw.info &= ~SNDRV_PCM_INFO_INTERLEAVED; | |
364 | runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED; | |
365 | } | |
366 | if (substream->pcm->device & 2) | |
367 | runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP|SNDRV_PCM_INFO_MMAP_VALID); | |
1a11cb64 JK |
368 | err = add_playback_constraints(runtime); |
369 | if (err < 0) | |
1da177e4 | 370 | return err; |
1da177e4 LT |
371 | |
372 | return 0; | |
373 | } | |
374 | ||
4a4d2cfd | 375 | static int snd_card_dummy_capture_open(struct snd_pcm_substream *substream) |
1da177e4 | 376 | { |
4a4d2cfd TI |
377 | struct snd_pcm_runtime *runtime = substream->runtime; |
378 | struct snd_dummy_pcm *dpcm; | |
1da177e4 LT |
379 | int err; |
380 | ||
c8eb6ba1 | 381 | if ((dpcm = new_pcm_stream(substream)) == NULL) |
1da177e4 | 382 | return -ENOMEM; |
1da177e4 | 383 | runtime->private_data = dpcm; |
54e8e21e | 384 | /* makes the infrastructure responsible for freeing dpcm */ |
1da177e4 LT |
385 | runtime->private_free = snd_card_dummy_runtime_free; |
386 | runtime->hw = snd_card_dummy_capture; | |
387 | if (substream->pcm->device == 1) { | |
388 | runtime->hw.info &= ~SNDRV_PCM_INFO_INTERLEAVED; | |
389 | runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED; | |
390 | } | |
391 | if (substream->pcm->device & 2) | |
392 | runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP|SNDRV_PCM_INFO_MMAP_VALID); | |
1a11cb64 JK |
393 | err = add_capture_constraints(runtime); |
394 | if (err < 0) | |
1da177e4 | 395 | return err; |
1da177e4 LT |
396 | |
397 | return 0; | |
398 | } | |
399 | ||
4a4d2cfd | 400 | static int snd_card_dummy_playback_close(struct snd_pcm_substream *substream) |
1da177e4 LT |
401 | { |
402 | return 0; | |
403 | } | |
404 | ||
4a4d2cfd | 405 | static int snd_card_dummy_capture_close(struct snd_pcm_substream *substream) |
1da177e4 LT |
406 | { |
407 | return 0; | |
408 | } | |
409 | ||
4a4d2cfd | 410 | static struct snd_pcm_ops snd_card_dummy_playback_ops = { |
1da177e4 LT |
411 | .open = snd_card_dummy_playback_open, |
412 | .close = snd_card_dummy_playback_close, | |
413 | .ioctl = snd_pcm_lib_ioctl, | |
414 | .hw_params = snd_card_dummy_hw_params, | |
415 | .hw_free = snd_card_dummy_hw_free, | |
c8eb6ba1 TI |
416 | .prepare = snd_card_dummy_pcm_prepare, |
417 | .trigger = snd_card_dummy_pcm_trigger, | |
418 | .pointer = snd_card_dummy_pcm_pointer, | |
1da177e4 LT |
419 | }; |
420 | ||
4a4d2cfd | 421 | static struct snd_pcm_ops snd_card_dummy_capture_ops = { |
1da177e4 LT |
422 | .open = snd_card_dummy_capture_open, |
423 | .close = snd_card_dummy_capture_close, | |
424 | .ioctl = snd_pcm_lib_ioctl, | |
425 | .hw_params = snd_card_dummy_hw_params, | |
426 | .hw_free = snd_card_dummy_hw_free, | |
c8eb6ba1 TI |
427 | .prepare = snd_card_dummy_pcm_prepare, |
428 | .trigger = snd_card_dummy_pcm_trigger, | |
429 | .pointer = snd_card_dummy_pcm_pointer, | |
1da177e4 LT |
430 | }; |
431 | ||
788c6043 PB |
432 | static int __devinit snd_card_dummy_pcm(struct snd_dummy *dummy, int device, |
433 | int substreams) | |
1da177e4 | 434 | { |
4a4d2cfd | 435 | struct snd_pcm *pcm; |
1da177e4 LT |
436 | int err; |
437 | ||
1a11cb64 JK |
438 | err = snd_pcm_new(dummy->card, "Dummy PCM", device, |
439 | substreams, substreams, &pcm); | |
440 | if (err < 0) | |
1da177e4 | 441 | return err; |
6e65c1cc | 442 | dummy->pcm = pcm; |
1da177e4 LT |
443 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_card_dummy_playback_ops); |
444 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_dummy_capture_ops); | |
445 | pcm->private_data = dummy; | |
446 | pcm->info_flags = 0; | |
447 | strcpy(pcm->name, "Dummy PCM"); | |
448 | snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, | |
449 | snd_dma_continuous_data(GFP_KERNEL), | |
450 | 0, 64*1024); | |
451 | return 0; | |
452 | } | |
453 | ||
454 | #define DUMMY_VOLUME(xname, xindex, addr) \ | |
fb567a8e TI |
455 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ |
456 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \ | |
457 | .name = xname, .index = xindex, \ | |
1da177e4 LT |
458 | .info = snd_dummy_volume_info, \ |
459 | .get = snd_dummy_volume_get, .put = snd_dummy_volume_put, \ | |
fb567a8e TI |
460 | .private_value = addr, \ |
461 | .tlv = { .p = db_scale_dummy } } | |
1da177e4 | 462 | |
4a4d2cfd TI |
463 | static int snd_dummy_volume_info(struct snd_kcontrol *kcontrol, |
464 | struct snd_ctl_elem_info *uinfo) | |
1da177e4 LT |
465 | { |
466 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
467 | uinfo->count = 2; | |
468 | uinfo->value.integer.min = -50; | |
469 | uinfo->value.integer.max = 100; | |
470 | return 0; | |
471 | } | |
472 | ||
4a4d2cfd TI |
473 | static int snd_dummy_volume_get(struct snd_kcontrol *kcontrol, |
474 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 475 | { |
4a4d2cfd | 476 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
477 | int addr = kcontrol->private_value; |
478 | ||
c8eb6ba1 | 479 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
480 | ucontrol->value.integer.value[0] = dummy->mixer_volume[addr][0]; |
481 | ucontrol->value.integer.value[1] = dummy->mixer_volume[addr][1]; | |
c8eb6ba1 | 482 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
483 | return 0; |
484 | } | |
485 | ||
4a4d2cfd TI |
486 | static int snd_dummy_volume_put(struct snd_kcontrol *kcontrol, |
487 | struct snd_ctl_elem_value *ucontrol) | |
1da177e4 | 488 | { |
4a4d2cfd | 489 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
1da177e4 LT |
490 | int change, addr = kcontrol->private_value; |
491 | int left, right; | |
492 | ||
493 | left = ucontrol->value.integer.value[0]; | |
494 | if (left < -50) | |
495 | left = -50; | |
496 | if (left > 100) | |
497 | left = 100; | |
498 | right = ucontrol->value.integer.value[1]; | |
499 | if (right < -50) | |
500 | right = -50; | |
501 | if (right > 100) | |
502 | right = 100; | |
c8eb6ba1 | 503 | spin_lock_irq(&dummy->mixer_lock); |
1da177e4 LT |
504 | change = dummy->mixer_volume[addr][0] != left || |
505 | dummy->mixer_volume[addr][1] != right; | |
506 | dummy->mixer_volume[addr][0] = left; | |
507 | dummy->mixer_volume[addr][1] = right; | |
c8eb6ba1 | 508 | spin_unlock_irq(&dummy->mixer_lock); |
1da177e4 LT |
509 | return change; |
510 | } | |
511 | ||
0cb29ea0 | 512 | static const DECLARE_TLV_DB_SCALE(db_scale_dummy, -4500, 30, 0); |
fb567a8e | 513 | |
1da177e4 LT |
514 | #define DUMMY_CAPSRC(xname, xindex, addr) \ |
515 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ | |
516 | .info = snd_dummy_capsrc_info, \ | |
517 | .get = snd_dummy_capsrc_get, .put = snd_dummy_capsrc_put, \ | |
518 | .private_value = addr } | |
519 | ||
a5ce8890 | 520 | #define snd_dummy_capsrc_info snd_ctl_boolean_stereo_info |
1da177e4 | 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 | ||
788c6043 | 565 | static int __devinit 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 | ||
5e246b85 TI |
571 | if (snd_BUG_ON(!dummy)) |
572 | return -EINVAL; | |
1da177e4 LT |
573 | spin_lock_init(&dummy->mixer_lock); |
574 | strcpy(card->mixername, "Dummy Mixer"); | |
575 | ||
576 | for (idx = 0; idx < ARRAY_SIZE(snd_dummy_controls); idx++) { | |
1a11cb64 JK |
577 | err = snd_ctl_add(card, snd_ctl_new1(&snd_dummy_controls[idx], dummy)); |
578 | if (err < 0) | |
1da177e4 LT |
579 | return err; |
580 | } | |
581 | return 0; | |
582 | } | |
583 | ||
788c6043 | 584 | static int __devinit snd_dummy_probe(struct platform_device *devptr) |
1da177e4 | 585 | { |
4a4d2cfd TI |
586 | struct snd_card *card; |
587 | struct snd_dummy *dummy; | |
1da177e4 | 588 | int idx, err; |
6e65c1cc | 589 | int dev = devptr->id; |
1da177e4 | 590 | |
bd7dd77c TI |
591 | err = snd_card_create(index[dev], id[dev], THIS_MODULE, |
592 | sizeof(struct snd_dummy), &card); | |
593 | if (err < 0) | |
594 | return err; | |
4a4d2cfd | 595 | dummy = card->private_data; |
1da177e4 LT |
596 | dummy->card = card; |
597 | for (idx = 0; idx < MAX_PCM_DEVICES && idx < pcm_devs[dev]; idx++) { | |
598 | if (pcm_substreams[dev] < 1) | |
599 | pcm_substreams[dev] = 1; | |
600 | if (pcm_substreams[dev] > MAX_PCM_SUBSTREAMS) | |
601 | pcm_substreams[dev] = MAX_PCM_SUBSTREAMS; | |
1a11cb64 JK |
602 | err = snd_card_dummy_pcm(dummy, idx, pcm_substreams[dev]); |
603 | if (err < 0) | |
1da177e4 LT |
604 | goto __nodev; |
605 | } | |
1a11cb64 JK |
606 | err = snd_card_dummy_new_mixer(dummy); |
607 | if (err < 0) | |
1da177e4 LT |
608 | goto __nodev; |
609 | strcpy(card->driver, "Dummy"); | |
610 | strcpy(card->shortname, "Dummy"); | |
611 | sprintf(card->longname, "Dummy %i", dev + 1); | |
16dab54b | 612 | |
6e65c1cc | 613 | snd_card_set_dev(card, &devptr->dev); |
16dab54b | 614 | |
1a11cb64 JK |
615 | err = snd_card_register(card); |
616 | if (err == 0) { | |
6e65c1cc | 617 | platform_set_drvdata(devptr, card); |
1da177e4 LT |
618 | return 0; |
619 | } | |
620 | __nodev: | |
621 | snd_card_free(card); | |
622 | return err; | |
623 | } | |
624 | ||
788c6043 | 625 | static int __devexit snd_dummy_remove(struct platform_device *devptr) |
6e65c1cc TI |
626 | { |
627 | snd_card_free(platform_get_drvdata(devptr)); | |
628 | platform_set_drvdata(devptr, NULL); | |
629 | return 0; | |
630 | } | |
631 | ||
632 | #ifdef CONFIG_PM | |
633 | static int snd_dummy_suspend(struct platform_device *pdev, pm_message_t state) | |
1da177e4 | 634 | { |
6e65c1cc TI |
635 | struct snd_card *card = platform_get_drvdata(pdev); |
636 | struct snd_dummy *dummy = card->private_data; | |
1da177e4 | 637 | |
6e65c1cc TI |
638 | snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
639 | snd_pcm_suspend_all(dummy->pcm); | |
640 | return 0; | |
641 | } | |
642 | ||
643 | static int snd_dummy_resume(struct platform_device *pdev) | |
644 | { | |
645 | struct snd_card *card = platform_get_drvdata(pdev); | |
646 | ||
647 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); | |
648 | return 0; | |
649 | } | |
650 | #endif | |
651 | ||
652 | #define SND_DUMMY_DRIVER "snd_dummy" | |
653 | ||
654 | static struct platform_driver snd_dummy_driver = { | |
655 | .probe = snd_dummy_probe, | |
788c6043 | 656 | .remove = __devexit_p(snd_dummy_remove), |
6e65c1cc TI |
657 | #ifdef CONFIG_PM |
658 | .suspend = snd_dummy_suspend, | |
659 | .resume = snd_dummy_resume, | |
1da177e4 | 660 | #endif |
6e65c1cc TI |
661 | .driver = { |
662 | .name = SND_DUMMY_DRIVER | |
663 | }, | |
664 | }; | |
665 | ||
c12aad6e | 666 | static void snd_dummy_unregister_all(void) |
f7a9275d CL |
667 | { |
668 | int i; | |
669 | ||
670 | for (i = 0; i < ARRAY_SIZE(devices); ++i) | |
671 | platform_device_unregister(devices[i]); | |
672 | platform_driver_unregister(&snd_dummy_driver); | |
673 | } | |
674 | ||
6e65c1cc TI |
675 | static int __init alsa_card_dummy_init(void) |
676 | { | |
677 | int i, cards, err; | |
678 | ||
1a11cb64 JK |
679 | err = platform_driver_register(&snd_dummy_driver); |
680 | if (err < 0) | |
6e65c1cc TI |
681 | return err; |
682 | ||
683 | cards = 0; | |
8278ca8f | 684 | for (i = 0; i < SNDRV_CARDS; i++) { |
6e65c1cc | 685 | struct platform_device *device; |
8278ca8f TI |
686 | if (! enable[i]) |
687 | continue; | |
6e65c1cc TI |
688 | device = platform_device_register_simple(SND_DUMMY_DRIVER, |
689 | i, NULL, 0); | |
a182ee98 RH |
690 | if (IS_ERR(device)) |
691 | continue; | |
7152447d RH |
692 | if (!platform_get_drvdata(device)) { |
693 | platform_device_unregister(device); | |
694 | continue; | |
695 | } | |
f7a9275d | 696 | devices[i] = device; |
1da177e4 LT |
697 | cards++; |
698 | } | |
699 | if (!cards) { | |
700 | #ifdef MODULE | |
701 | printk(KERN_ERR "Dummy soundcard not found or device busy\n"); | |
702 | #endif | |
a182ee98 RH |
703 | snd_dummy_unregister_all(); |
704 | return -ENODEV; | |
1da177e4 LT |
705 | } |
706 | return 0; | |
707 | } | |
708 | ||
709 | static void __exit alsa_card_dummy_exit(void) | |
710 | { | |
f7a9275d | 711 | snd_dummy_unregister_all(); |
1da177e4 LT |
712 | } |
713 | ||
714 | module_init(alsa_card_dummy_init) | |
715 | module_exit(alsa_card_dummy_exit) |