Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Dummy soundcard |
Jaroslav Kysela | c1017a4 | 2007-10-15 09:50:19 +0200 | [diff] [blame] | 3 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <linux/init.h> |
Takashi Iwai | 6e65c1c | 2005-11-17 16:01:56 +0100 | [diff] [blame] | 22 | #include <linux/err.h> |
| 23 | #include <linux/platform_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <linux/jiffies.h> |
| 25 | #include <linux/slab.h> |
| 26 | #include <linux/time.h> |
| 27 | #include <linux/wait.h> |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 28 | #include <linux/hrtimer.h> |
| 29 | #include <linux/math64.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/moduleparam.h> |
| 31 | #include <sound/core.h> |
| 32 | #include <sound/control.h> |
Takashi Iwai | fb567a8 | 2006-08-23 13:07:19 +0200 | [diff] [blame] | 33 | #include <sound/tlv.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <sound/pcm.h> |
| 35 | #include <sound/rawmidi.h> |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 36 | #include <sound/info.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <sound/initval.h> |
| 38 | |
Jaroslav Kysela | c1017a4 | 2007-10-15 09:50:19 +0200 | [diff] [blame] | 39 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | MODULE_DESCRIPTION("Dummy soundcard (/dev/null)"); |
| 41 | MODULE_LICENSE("GPL"); |
| 42 | MODULE_SUPPORTED_DEVICE("{{ALSA,Dummy soundcard}}"); |
| 43 | |
| 44 | #define MAX_PCM_DEVICES 4 |
Takashi Iwai | b888d1c | 2009-09-08 18:15:17 +0200 | [diff] [blame] | 45 | #define MAX_PCM_SUBSTREAMS 128 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #define MAX_MIDI_DEVICES 2 |
| 47 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | /* defaults */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #define MAX_BUFFER_SIZE (64*1024) |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 50 | #define MIN_PERIOD_SIZE 64 |
Jaroslav Kysela | 2ad5dd8 | 2006-01-03 14:27:21 +0100 | [diff] [blame] | 51 | #define MAX_PERIOD_SIZE MAX_BUFFER_SIZE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #define USE_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #define USE_RATE SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000 |
| 54 | #define USE_RATE_MIN 5500 |
| 55 | #define USE_RATE_MAX 48000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | #define USE_CHANNELS_MIN 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #define USE_CHANNELS_MAX 2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | #define USE_PERIODS_MIN 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | #define USE_PERIODS_MAX 1024 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
| 61 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ |
| 62 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ |
| 63 | static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0}; |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 64 | static char *model[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = NULL}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | static int pcm_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1}; |
| 66 | static int pcm_substreams[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 8}; |
| 67 | //static int midi_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2}; |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 68 | #ifdef CONFIG_HIGH_RES_TIMERS |
| 69 | static int hrtimer = 1; |
| 70 | #endif |
Takashi Iwai | a68c4d1 | 2009-09-04 12:19:36 +0200 | [diff] [blame] | 71 | static int fake_buffer = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | |
| 73 | module_param_array(index, int, NULL, 0444); |
| 74 | MODULE_PARM_DESC(index, "Index value for dummy soundcard."); |
| 75 | module_param_array(id, charp, NULL, 0444); |
| 76 | MODULE_PARM_DESC(id, "ID string for dummy soundcard."); |
| 77 | module_param_array(enable, bool, NULL, 0444); |
| 78 | MODULE_PARM_DESC(enable, "Enable this dummy soundcard."); |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 79 | module_param_array(model, charp, NULL, 0444); |
| 80 | MODULE_PARM_DESC(model, "Soundcard model."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | module_param_array(pcm_devs, int, NULL, 0444); |
| 82 | MODULE_PARM_DESC(pcm_devs, "PCM devices # (0-4) for dummy driver."); |
| 83 | module_param_array(pcm_substreams, int, NULL, 0444); |
Takashi Iwai | 23aebca4 | 2009-11-02 14:10:59 +0100 | [diff] [blame] | 84 | MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-128) for dummy driver."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | //module_param_array(midi_devs, int, NULL, 0444); |
| 86 | //MODULE_PARM_DESC(midi_devs, "MIDI devices # (0-2) for dummy driver."); |
Takashi Iwai | a68c4d1 | 2009-09-04 12:19:36 +0200 | [diff] [blame] | 87 | module_param(fake_buffer, bool, 0444); |
| 88 | MODULE_PARM_DESC(fake_buffer, "Fake buffer allocations."); |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 89 | #ifdef CONFIG_HIGH_RES_TIMERS |
| 90 | module_param(hrtimer, bool, 0644); |
| 91 | MODULE_PARM_DESC(hrtimer, "Use hrtimer as the timer source."); |
| 92 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | |
Clemens Ladisch | f7a9275 | 2005-12-07 09:13:42 +0100 | [diff] [blame] | 94 | static struct platform_device *devices[SNDRV_CARDS]; |
| 95 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | #define MIXER_ADDR_MASTER 0 |
| 97 | #define MIXER_ADDR_LINE 1 |
| 98 | #define MIXER_ADDR_MIC 2 |
| 99 | #define MIXER_ADDR_SYNTH 3 |
| 100 | #define MIXER_ADDR_CD 4 |
| 101 | #define MIXER_ADDR_LAST 4 |
| 102 | |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 103 | struct dummy_timer_ops { |
| 104 | int (*create)(struct snd_pcm_substream *); |
| 105 | void (*free)(struct snd_pcm_substream *); |
| 106 | int (*prepare)(struct snd_pcm_substream *); |
| 107 | int (*start)(struct snd_pcm_substream *); |
| 108 | int (*stop)(struct snd_pcm_substream *); |
| 109 | snd_pcm_uframes_t (*pointer)(struct snd_pcm_substream *); |
| 110 | }; |
| 111 | |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 112 | struct dummy_model { |
| 113 | const char *name; |
| 114 | int (*playback_constraints)(struct snd_pcm_runtime *runtime); |
| 115 | int (*capture_constraints)(struct snd_pcm_runtime *runtime); |
| 116 | u64 formats; |
| 117 | size_t buffer_bytes_max; |
| 118 | size_t period_bytes_min; |
| 119 | size_t period_bytes_max; |
| 120 | unsigned int periods_min; |
| 121 | unsigned int periods_max; |
| 122 | unsigned int rates; |
| 123 | unsigned int rate_min; |
| 124 | unsigned int rate_max; |
| 125 | unsigned int channels_min; |
| 126 | unsigned int channels_max; |
| 127 | }; |
| 128 | |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 129 | struct snd_dummy { |
| 130 | struct snd_card *card; |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 131 | struct dummy_model *model; |
Takashi Iwai | 6e65c1c | 2005-11-17 16:01:56 +0100 | [diff] [blame] | 132 | struct snd_pcm *pcm; |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 133 | struct snd_pcm_hardware pcm_hw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | spinlock_t mixer_lock; |
| 135 | int mixer_volume[MIXER_ADDR_LAST+1][2]; |
| 136 | int capture_source[MIXER_ADDR_LAST+1][2]; |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 137 | const struct dummy_timer_ops *timer_ops; |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 138 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 140 | /* |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 141 | * card models |
| 142 | */ |
| 143 | |
| 144 | static int emu10k1_playback_constraints(struct snd_pcm_runtime *runtime) |
| 145 | { |
| 146 | int err; |
| 147 | err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); |
| 148 | if (err < 0) |
| 149 | return err; |
| 150 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 256, UINT_MAX); |
| 151 | if (err < 0) |
| 152 | return err; |
| 153 | return 0; |
| 154 | } |
| 155 | |
| 156 | struct dummy_model model_emu10k1 = { |
| 157 | .name = "emu10k1", |
| 158 | .playback_constraints = emu10k1_playback_constraints, |
| 159 | .buffer_bytes_max = 128 * 1024, |
| 160 | }; |
| 161 | |
| 162 | struct dummy_model model_rme9652 = { |
| 163 | .name = "rme9652", |
| 164 | .buffer_bytes_max = 26 * 64 * 1024, |
| 165 | .formats = SNDRV_PCM_FMTBIT_S32_LE, |
| 166 | .channels_min = 26, |
| 167 | .channels_max = 26, |
| 168 | .periods_min = 2, |
| 169 | .periods_max = 2, |
| 170 | }; |
| 171 | |
| 172 | struct dummy_model model_ice1712 = { |
| 173 | .name = "ice1712", |
| 174 | .buffer_bytes_max = 256 * 1024, |
| 175 | .formats = SNDRV_PCM_FMTBIT_S32_LE, |
| 176 | .channels_min = 10, |
| 177 | .channels_max = 10, |
| 178 | .periods_min = 1, |
| 179 | .periods_max = 1024, |
| 180 | }; |
| 181 | |
| 182 | struct dummy_model model_uda1341 = { |
| 183 | .name = "uda1341", |
| 184 | .buffer_bytes_max = 16380, |
| 185 | .formats = SNDRV_PCM_FMTBIT_S16_LE, |
| 186 | .channels_min = 2, |
| 187 | .channels_max = 2, |
| 188 | .periods_min = 2, |
| 189 | .periods_max = 255, |
| 190 | }; |
| 191 | |
| 192 | struct dummy_model model_ac97 = { |
| 193 | .name = "ac97", |
| 194 | .formats = SNDRV_PCM_FMTBIT_S16_LE, |
| 195 | .channels_min = 2, |
| 196 | .channels_max = 2, |
| 197 | .rates = SNDRV_PCM_RATE_48000, |
| 198 | .rate_min = 48000, |
| 199 | .rate_max = 48000, |
| 200 | }; |
| 201 | |
| 202 | struct dummy_model model_ca0106 = { |
| 203 | .name = "ca0106", |
| 204 | .formats = SNDRV_PCM_FMTBIT_S16_LE, |
| 205 | .buffer_bytes_max = ((65536-64)*8), |
| 206 | .period_bytes_max = (65536-64), |
| 207 | .periods_min = 2, |
| 208 | .periods_max = 8, |
| 209 | .channels_min = 2, |
| 210 | .channels_max = 2, |
| 211 | .rates = SNDRV_PCM_RATE_48000|SNDRV_PCM_RATE_96000|SNDRV_PCM_RATE_192000, |
| 212 | .rate_min = 48000, |
| 213 | .rate_max = 192000, |
| 214 | }; |
| 215 | |
| 216 | struct dummy_model *dummy_models[] = { |
| 217 | &model_emu10k1, |
| 218 | &model_rme9652, |
| 219 | &model_ice1712, |
| 220 | &model_uda1341, |
| 221 | &model_ac97, |
| 222 | &model_ca0106, |
| 223 | NULL |
| 224 | }; |
| 225 | |
| 226 | /* |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 227 | * system timer interface |
| 228 | */ |
| 229 | |
| 230 | struct dummy_systimer_pcm { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | spinlock_t lock; |
| 232 | struct timer_list timer; |
Takashi Iwai | b142037 | 2009-09-03 16:01:06 +0200 | [diff] [blame] | 233 | unsigned long base_time; |
| 234 | unsigned int frac_pos; /* fractional sample position (based HZ) */ |
Takashi Iwai | b5d1078 | 2009-09-04 08:45:11 +0200 | [diff] [blame] | 235 | unsigned int frac_period_rest; |
Takashi Iwai | b142037 | 2009-09-03 16:01:06 +0200 | [diff] [blame] | 236 | unsigned int frac_buffer_size; /* buffer_size * HZ */ |
| 237 | unsigned int frac_period_size; /* period_size * HZ */ |
| 238 | unsigned int rate; |
Takashi Iwai | b5d1078 | 2009-09-04 08:45:11 +0200 | [diff] [blame] | 239 | int elapsed; |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 240 | struct snd_pcm_substream *substream; |
| 241 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | |
Takashi Iwai | b142037 | 2009-09-03 16:01:06 +0200 | [diff] [blame] | 243 | static void dummy_systimer_rearm(struct dummy_systimer_pcm *dpcm) |
| 244 | { |
Takashi Iwai | b142037 | 2009-09-03 16:01:06 +0200 | [diff] [blame] | 245 | dpcm->timer.expires = jiffies + |
Takashi Iwai | b5d1078 | 2009-09-04 08:45:11 +0200 | [diff] [blame] | 246 | (dpcm->frac_period_rest + dpcm->rate - 1) / dpcm->rate; |
Takashi Iwai | b142037 | 2009-09-03 16:01:06 +0200 | [diff] [blame] | 247 | add_timer(&dpcm->timer); |
| 248 | } |
| 249 | |
| 250 | static void dummy_systimer_update(struct dummy_systimer_pcm *dpcm) |
| 251 | { |
| 252 | unsigned long delta; |
| 253 | |
| 254 | delta = jiffies - dpcm->base_time; |
| 255 | if (!delta) |
| 256 | return; |
Takashi Iwai | b5d1078 | 2009-09-04 08:45:11 +0200 | [diff] [blame] | 257 | dpcm->base_time += delta; |
| 258 | delta *= dpcm->rate; |
| 259 | dpcm->frac_pos += delta; |
Takashi Iwai | b142037 | 2009-09-03 16:01:06 +0200 | [diff] [blame] | 260 | while (dpcm->frac_pos >= dpcm->frac_buffer_size) |
| 261 | dpcm->frac_pos -= dpcm->frac_buffer_size; |
Takashi Iwai | b5d1078 | 2009-09-04 08:45:11 +0200 | [diff] [blame] | 262 | while (dpcm->frac_period_rest <= delta) { |
| 263 | dpcm->elapsed++; |
| 264 | dpcm->frac_period_rest += dpcm->frac_period_size; |
| 265 | } |
| 266 | dpcm->frac_period_rest -= delta; |
Takashi Iwai | b142037 | 2009-09-03 16:01:06 +0200 | [diff] [blame] | 267 | } |
| 268 | |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 269 | static int dummy_systimer_start(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | { |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 271 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
| 272 | spin_lock(&dpcm->lock); |
Takashi Iwai | b142037 | 2009-09-03 16:01:06 +0200 | [diff] [blame] | 273 | dpcm->base_time = jiffies; |
| 274 | dummy_systimer_rearm(dpcm); |
Takashi Iwai | c8eb6ba | 2005-11-17 10:20:23 +0100 | [diff] [blame] | 275 | spin_unlock(&dpcm->lock); |
Takashi Iwai | 6e65c1c | 2005-11-17 16:01:56 +0100 | [diff] [blame] | 276 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | } |
| 278 | |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 279 | static int dummy_systimer_stop(struct snd_pcm_substream *substream) |
| 280 | { |
| 281 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
| 282 | spin_lock(&dpcm->lock); |
| 283 | del_timer(&dpcm->timer); |
| 284 | spin_unlock(&dpcm->lock); |
| 285 | return 0; |
| 286 | } |
| 287 | |
| 288 | static int dummy_systimer_prepare(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | { |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 290 | struct snd_pcm_runtime *runtime = substream->runtime; |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 291 | struct dummy_systimer_pcm *dpcm = runtime->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | |
Takashi Iwai | b142037 | 2009-09-03 16:01:06 +0200 | [diff] [blame] | 293 | dpcm->frac_pos = 0; |
| 294 | dpcm->rate = runtime->rate; |
| 295 | dpcm->frac_buffer_size = runtime->buffer_size * HZ; |
| 296 | dpcm->frac_period_size = runtime->period_size * HZ; |
Takashi Iwai | b5d1078 | 2009-09-04 08:45:11 +0200 | [diff] [blame] | 297 | dpcm->frac_period_rest = dpcm->frac_period_size; |
| 298 | dpcm->elapsed = 0; |
Ahmet Ä°nan | 53463a8 | 2008-02-21 07:55:30 +0100 | [diff] [blame] | 299 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | return 0; |
| 301 | } |
| 302 | |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 303 | static void dummy_systimer_callback(unsigned long data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | { |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 305 | struct dummy_systimer_pcm *dpcm = (struct dummy_systimer_pcm *)data; |
Takashi Iwai | b32425a | 2005-11-18 18:52:14 +0100 | [diff] [blame] | 306 | unsigned long flags; |
Takashi Iwai | b5d1078 | 2009-09-04 08:45:11 +0200 | [diff] [blame] | 307 | int elapsed = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | |
Takashi Iwai | b32425a | 2005-11-18 18:52:14 +0100 | [diff] [blame] | 309 | spin_lock_irqsave(&dpcm->lock, flags); |
Takashi Iwai | b142037 | 2009-09-03 16:01:06 +0200 | [diff] [blame] | 310 | dummy_systimer_update(dpcm); |
| 311 | dummy_systimer_rearm(dpcm); |
Takashi Iwai | b5d1078 | 2009-09-04 08:45:11 +0200 | [diff] [blame] | 312 | elapsed = dpcm->elapsed; |
| 313 | dpcm->elapsed = 0; |
Takashi Iwai | b142037 | 2009-09-03 16:01:06 +0200 | [diff] [blame] | 314 | spin_unlock_irqrestore(&dpcm->lock, flags); |
Takashi Iwai | b5d1078 | 2009-09-04 08:45:11 +0200 | [diff] [blame] | 315 | if (elapsed) |
| 316 | snd_pcm_period_elapsed(dpcm->substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | } |
| 318 | |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 319 | static snd_pcm_uframes_t |
| 320 | dummy_systimer_pointer(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | { |
Takashi Iwai | b142037 | 2009-09-03 16:01:06 +0200 | [diff] [blame] | 322 | struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; |
Takashi Iwai | b5d1078 | 2009-09-04 08:45:11 +0200 | [diff] [blame] | 323 | snd_pcm_uframes_t pos; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | |
Takashi Iwai | b142037 | 2009-09-03 16:01:06 +0200 | [diff] [blame] | 325 | spin_lock(&dpcm->lock); |
| 326 | dummy_systimer_update(dpcm); |
Takashi Iwai | b5d1078 | 2009-09-04 08:45:11 +0200 | [diff] [blame] | 327 | pos = dpcm->frac_pos / HZ; |
Takashi Iwai | b142037 | 2009-09-03 16:01:06 +0200 | [diff] [blame] | 328 | spin_unlock(&dpcm->lock); |
Takashi Iwai | b5d1078 | 2009-09-04 08:45:11 +0200 | [diff] [blame] | 329 | return pos; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | } |
| 331 | |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 332 | static int dummy_systimer_create(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | { |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 334 | struct dummy_systimer_pcm *dpcm; |
| 335 | |
| 336 | dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); |
| 337 | if (!dpcm) |
| 338 | return -ENOMEM; |
| 339 | substream->runtime->private_data = dpcm; |
| 340 | init_timer(&dpcm->timer); |
| 341 | dpcm->timer.data = (unsigned long) dpcm; |
| 342 | dpcm->timer.function = dummy_systimer_callback; |
| 343 | spin_lock_init(&dpcm->lock); |
| 344 | dpcm->substream = substream; |
| 345 | return 0; |
| 346 | } |
| 347 | |
| 348 | static void dummy_systimer_free(struct snd_pcm_substream *substream) |
| 349 | { |
| 350 | kfree(substream->runtime->private_data); |
| 351 | } |
| 352 | |
| 353 | static struct dummy_timer_ops dummy_systimer_ops = { |
| 354 | .create = dummy_systimer_create, |
| 355 | .free = dummy_systimer_free, |
| 356 | .prepare = dummy_systimer_prepare, |
| 357 | .start = dummy_systimer_start, |
| 358 | .stop = dummy_systimer_stop, |
| 359 | .pointer = dummy_systimer_pointer, |
| 360 | }; |
| 361 | |
| 362 | #ifdef CONFIG_HIGH_RES_TIMERS |
| 363 | /* |
| 364 | * hrtimer interface |
| 365 | */ |
| 366 | |
| 367 | struct dummy_hrtimer_pcm { |
| 368 | ktime_t base_time; |
| 369 | ktime_t period_time; |
| 370 | atomic_t running; |
| 371 | struct hrtimer timer; |
| 372 | struct tasklet_struct tasklet; |
| 373 | struct snd_pcm_substream *substream; |
| 374 | }; |
| 375 | |
| 376 | static void dummy_hrtimer_pcm_elapsed(unsigned long priv) |
| 377 | { |
| 378 | struct dummy_hrtimer_pcm *dpcm = (struct dummy_hrtimer_pcm *)priv; |
| 379 | if (atomic_read(&dpcm->running)) |
| 380 | snd_pcm_period_elapsed(dpcm->substream); |
| 381 | } |
| 382 | |
| 383 | static enum hrtimer_restart dummy_hrtimer_callback(struct hrtimer *timer) |
| 384 | { |
| 385 | struct dummy_hrtimer_pcm *dpcm; |
| 386 | |
| 387 | dpcm = container_of(timer, struct dummy_hrtimer_pcm, timer); |
| 388 | if (!atomic_read(&dpcm->running)) |
| 389 | return HRTIMER_NORESTART; |
| 390 | tasklet_schedule(&dpcm->tasklet); |
| 391 | hrtimer_forward_now(timer, dpcm->period_time); |
| 392 | return HRTIMER_RESTART; |
| 393 | } |
| 394 | |
| 395 | static int dummy_hrtimer_start(struct snd_pcm_substream *substream) |
| 396 | { |
| 397 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; |
| 398 | |
| 399 | dpcm->base_time = hrtimer_cb_get_time(&dpcm->timer); |
| 400 | hrtimer_start(&dpcm->timer, dpcm->period_time, HRTIMER_MODE_REL); |
| 401 | atomic_set(&dpcm->running, 1); |
| 402 | return 0; |
| 403 | } |
| 404 | |
| 405 | static int dummy_hrtimer_stop(struct snd_pcm_substream *substream) |
| 406 | { |
| 407 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; |
| 408 | |
| 409 | atomic_set(&dpcm->running, 0); |
| 410 | hrtimer_cancel(&dpcm->timer); |
| 411 | return 0; |
| 412 | } |
| 413 | |
| 414 | static inline void dummy_hrtimer_sync(struct dummy_hrtimer_pcm *dpcm) |
| 415 | { |
| 416 | tasklet_kill(&dpcm->tasklet); |
| 417 | } |
| 418 | |
| 419 | static snd_pcm_uframes_t |
| 420 | dummy_hrtimer_pointer(struct snd_pcm_substream *substream) |
| 421 | { |
| 422 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 423 | struct dummy_hrtimer_pcm *dpcm = runtime->private_data; |
| 424 | u64 delta; |
| 425 | u32 pos; |
| 426 | |
| 427 | delta = ktime_us_delta(hrtimer_cb_get_time(&dpcm->timer), |
| 428 | dpcm->base_time); |
| 429 | delta = div_u64(delta * runtime->rate + 999999, 1000000); |
| 430 | div_u64_rem(delta, runtime->buffer_size, &pos); |
| 431 | return pos; |
| 432 | } |
| 433 | |
| 434 | static int dummy_hrtimer_prepare(struct snd_pcm_substream *substream) |
| 435 | { |
| 436 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 437 | struct dummy_hrtimer_pcm *dpcm = runtime->private_data; |
| 438 | unsigned int period, rate; |
| 439 | long sec; |
| 440 | unsigned long nsecs; |
| 441 | |
| 442 | dummy_hrtimer_sync(dpcm); |
| 443 | period = runtime->period_size; |
| 444 | rate = runtime->rate; |
| 445 | sec = period / rate; |
| 446 | period %= rate; |
| 447 | nsecs = div_u64((u64)period * 1000000000UL + rate - 1, rate); |
| 448 | dpcm->period_time = ktime_set(sec, nsecs); |
| 449 | |
| 450 | return 0; |
| 451 | } |
| 452 | |
| 453 | static int dummy_hrtimer_create(struct snd_pcm_substream *substream) |
| 454 | { |
| 455 | struct dummy_hrtimer_pcm *dpcm; |
| 456 | |
| 457 | dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); |
| 458 | if (!dpcm) |
| 459 | return -ENOMEM; |
| 460 | substream->runtime->private_data = dpcm; |
| 461 | hrtimer_init(&dpcm->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); |
| 462 | dpcm->timer.function = dummy_hrtimer_callback; |
| 463 | dpcm->substream = substream; |
| 464 | atomic_set(&dpcm->running, 0); |
| 465 | tasklet_init(&dpcm->tasklet, dummy_hrtimer_pcm_elapsed, |
| 466 | (unsigned long)dpcm); |
| 467 | return 0; |
| 468 | } |
| 469 | |
| 470 | static void dummy_hrtimer_free(struct snd_pcm_substream *substream) |
| 471 | { |
| 472 | struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; |
| 473 | dummy_hrtimer_sync(dpcm); |
| 474 | kfree(dpcm); |
| 475 | } |
| 476 | |
| 477 | static struct dummy_timer_ops dummy_hrtimer_ops = { |
| 478 | .create = dummy_hrtimer_create, |
| 479 | .free = dummy_hrtimer_free, |
| 480 | .prepare = dummy_hrtimer_prepare, |
| 481 | .start = dummy_hrtimer_start, |
| 482 | .stop = dummy_hrtimer_stop, |
| 483 | .pointer = dummy_hrtimer_pointer, |
| 484 | }; |
| 485 | |
| 486 | #endif /* CONFIG_HIGH_RES_TIMERS */ |
| 487 | |
| 488 | /* |
| 489 | * PCM interface |
| 490 | */ |
| 491 | |
| 492 | static int dummy_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
| 493 | { |
| 494 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); |
| 495 | |
| 496 | switch (cmd) { |
| 497 | case SNDRV_PCM_TRIGGER_START: |
| 498 | case SNDRV_PCM_TRIGGER_RESUME: |
| 499 | return dummy->timer_ops->start(substream); |
| 500 | case SNDRV_PCM_TRIGGER_STOP: |
| 501 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 502 | return dummy->timer_ops->stop(substream); |
| 503 | } |
| 504 | return -EINVAL; |
| 505 | } |
| 506 | |
| 507 | static int dummy_pcm_prepare(struct snd_pcm_substream *substream) |
| 508 | { |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 509 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); |
| 510 | |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 511 | return dummy->timer_ops->prepare(substream); |
| 512 | } |
| 513 | |
| 514 | static snd_pcm_uframes_t dummy_pcm_pointer(struct snd_pcm_substream *substream) |
| 515 | { |
| 516 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); |
| 517 | |
| 518 | return dummy->timer_ops->pointer(substream); |
| 519 | } |
| 520 | |
| 521 | static struct snd_pcm_hardware dummy_pcm_hardware = { |
| 522 | .info = (SNDRV_PCM_INFO_MMAP | |
| 523 | SNDRV_PCM_INFO_INTERLEAVED | |
| 524 | SNDRV_PCM_INFO_RESUME | |
| 525 | SNDRV_PCM_INFO_MMAP_VALID), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | .formats = USE_FORMATS, |
| 527 | .rates = USE_RATE, |
| 528 | .rate_min = USE_RATE_MIN, |
| 529 | .rate_max = USE_RATE_MAX, |
| 530 | .channels_min = USE_CHANNELS_MIN, |
| 531 | .channels_max = USE_CHANNELS_MAX, |
| 532 | .buffer_bytes_max = MAX_BUFFER_SIZE, |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 533 | .period_bytes_min = MIN_PERIOD_SIZE, |
Takashi Iwai | e05d696 | 2006-08-17 17:12:19 +0200 | [diff] [blame] | 534 | .period_bytes_max = MAX_PERIOD_SIZE, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | .periods_min = USE_PERIODS_MIN, |
| 536 | .periods_max = USE_PERIODS_MAX, |
| 537 | .fifo_size = 0, |
| 538 | }; |
| 539 | |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 540 | static int dummy_pcm_hw_params(struct snd_pcm_substream *substream, |
| 541 | struct snd_pcm_hw_params *hw_params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | { |
Takashi Iwai | a68c4d1 | 2009-09-04 12:19:36 +0200 | [diff] [blame] | 543 | if (fake_buffer) { |
| 544 | /* runtime->dma_bytes has to be set manually to allow mmap */ |
| 545 | substream->runtime->dma_bytes = params_buffer_bytes(hw_params); |
| 546 | return 0; |
| 547 | } |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 548 | return snd_pcm_lib_malloc_pages(substream, |
| 549 | params_buffer_bytes(hw_params)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | } |
| 551 | |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 552 | static int dummy_pcm_hw_free(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | { |
Takashi Iwai | a68c4d1 | 2009-09-04 12:19:36 +0200 | [diff] [blame] | 554 | if (fake_buffer) |
| 555 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | return snd_pcm_lib_free_pages(substream); |
| 557 | } |
| 558 | |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 559 | static int dummy_pcm_open(struct snd_pcm_substream *substream) |
Takashi Iwai | c8eb6ba | 2005-11-17 10:20:23 +0100 | [diff] [blame] | 560 | { |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 561 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 562 | struct dummy_model *model = dummy->model; |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 563 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | int err; |
| 565 | |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 566 | dummy->timer_ops = &dummy_systimer_ops; |
| 567 | #ifdef CONFIG_HIGH_RES_TIMERS |
| 568 | if (hrtimer) |
| 569 | dummy->timer_ops = &dummy_hrtimer_ops; |
| 570 | #endif |
| 571 | |
| 572 | err = dummy->timer_ops->create(substream); |
| 573 | if (err < 0) |
| 574 | return err; |
| 575 | |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 576 | runtime->hw = dummy->pcm_hw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | if (substream->pcm->device & 1) { |
| 578 | runtime->hw.info &= ~SNDRV_PCM_INFO_INTERLEAVED; |
| 579 | runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED; |
| 580 | } |
| 581 | if (substream->pcm->device & 2) |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 582 | runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP | |
| 583 | SNDRV_PCM_INFO_MMAP_VALID); |
| 584 | |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 585 | if (model == NULL) |
| 586 | return 0; |
| 587 | |
| 588 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 589 | if (model->playback_constraints) |
| 590 | err = model->playback_constraints(substream->runtime); |
| 591 | } else { |
| 592 | if (model->capture_constraints) |
| 593 | err = model->capture_constraints(substream->runtime); |
| 594 | } |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 595 | if (err < 0) { |
| 596 | dummy->timer_ops->free(substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | return 0; |
| 600 | } |
| 601 | |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 602 | static int dummy_pcm_close(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | { |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 604 | struct snd_dummy *dummy = snd_pcm_substream_chip(substream); |
| 605 | dummy->timer_ops->free(substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | return 0; |
| 607 | } |
| 608 | |
Takashi Iwai | a68c4d1 | 2009-09-04 12:19:36 +0200 | [diff] [blame] | 609 | /* |
| 610 | * dummy buffer handling |
| 611 | */ |
| 612 | |
| 613 | static void *dummy_page[2]; |
| 614 | |
| 615 | static void free_fake_buffer(void) |
| 616 | { |
| 617 | if (fake_buffer) { |
| 618 | int i; |
| 619 | for (i = 0; i < 2; i++) |
| 620 | if (dummy_page[i]) { |
| 621 | free_page((unsigned long)dummy_page[i]); |
| 622 | dummy_page[i] = NULL; |
| 623 | } |
| 624 | } |
| 625 | } |
| 626 | |
| 627 | static int alloc_fake_buffer(void) |
| 628 | { |
| 629 | int i; |
| 630 | |
| 631 | if (!fake_buffer) |
| 632 | return 0; |
| 633 | for (i = 0; i < 2; i++) { |
| 634 | dummy_page[i] = (void *)get_zeroed_page(GFP_KERNEL); |
| 635 | if (!dummy_page[i]) { |
| 636 | free_fake_buffer(); |
| 637 | return -ENOMEM; |
| 638 | } |
| 639 | } |
| 640 | return 0; |
| 641 | } |
| 642 | |
| 643 | static int dummy_pcm_copy(struct snd_pcm_substream *substream, |
| 644 | int channel, snd_pcm_uframes_t pos, |
| 645 | void __user *dst, snd_pcm_uframes_t count) |
| 646 | { |
| 647 | return 0; /* do nothing */ |
| 648 | } |
| 649 | |
| 650 | static int dummy_pcm_silence(struct snd_pcm_substream *substream, |
| 651 | int channel, snd_pcm_uframes_t pos, |
| 652 | snd_pcm_uframes_t count) |
| 653 | { |
| 654 | return 0; /* do nothing */ |
| 655 | } |
| 656 | |
| 657 | static struct page *dummy_pcm_page(struct snd_pcm_substream *substream, |
| 658 | unsigned long offset) |
| 659 | { |
| 660 | return virt_to_page(dummy_page[substream->stream]); /* the same page */ |
| 661 | } |
| 662 | |
Takashi Iwai | c631d03 | 2009-09-03 15:59:26 +0200 | [diff] [blame] | 663 | static struct snd_pcm_ops dummy_pcm_ops = { |
| 664 | .open = dummy_pcm_open, |
| 665 | .close = dummy_pcm_close, |
| 666 | .ioctl = snd_pcm_lib_ioctl, |
| 667 | .hw_params = dummy_pcm_hw_params, |
| 668 | .hw_free = dummy_pcm_hw_free, |
| 669 | .prepare = dummy_pcm_prepare, |
| 670 | .trigger = dummy_pcm_trigger, |
| 671 | .pointer = dummy_pcm_pointer, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | }; |
| 673 | |
Takashi Iwai | a68c4d1 | 2009-09-04 12:19:36 +0200 | [diff] [blame] | 674 | static struct snd_pcm_ops dummy_pcm_ops_no_buf = { |
| 675 | .open = dummy_pcm_open, |
| 676 | .close = dummy_pcm_close, |
| 677 | .ioctl = snd_pcm_lib_ioctl, |
| 678 | .hw_params = dummy_pcm_hw_params, |
| 679 | .hw_free = dummy_pcm_hw_free, |
| 680 | .prepare = dummy_pcm_prepare, |
| 681 | .trigger = dummy_pcm_trigger, |
| 682 | .pointer = dummy_pcm_pointer, |
| 683 | .copy = dummy_pcm_copy, |
| 684 | .silence = dummy_pcm_silence, |
| 685 | .page = dummy_pcm_page, |
| 686 | }; |
| 687 | |
Prarit Bhargava | 788c604 | 2007-02-13 13:11:11 +0100 | [diff] [blame] | 688 | static int __devinit snd_card_dummy_pcm(struct snd_dummy *dummy, int device, |
| 689 | int substreams) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | { |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 691 | struct snd_pcm *pcm; |
Takashi Iwai | a68c4d1 | 2009-09-04 12:19:36 +0200 | [diff] [blame] | 692 | struct snd_pcm_ops *ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | int err; |
| 694 | |
Jaroslav Kysela | 1a11cb6 | 2008-08-15 12:59:02 +0200 | [diff] [blame] | 695 | err = snd_pcm_new(dummy->card, "Dummy PCM", device, |
| 696 | substreams, substreams, &pcm); |
| 697 | if (err < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | return err; |
Takashi Iwai | 6e65c1c | 2005-11-17 16:01:56 +0100 | [diff] [blame] | 699 | dummy->pcm = pcm; |
Takashi Iwai | a68c4d1 | 2009-09-04 12:19:36 +0200 | [diff] [blame] | 700 | if (fake_buffer) |
| 701 | ops = &dummy_pcm_ops_no_buf; |
| 702 | else |
| 703 | ops = &dummy_pcm_ops; |
| 704 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, ops); |
| 705 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, ops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | pcm->private_data = dummy; |
| 707 | pcm->info_flags = 0; |
| 708 | strcpy(pcm->name, "Dummy PCM"); |
Takashi Iwai | a68c4d1 | 2009-09-04 12:19:36 +0200 | [diff] [blame] | 709 | if (!fake_buffer) { |
| 710 | snd_pcm_lib_preallocate_pages_for_all(pcm, |
| 711 | SNDRV_DMA_TYPE_CONTINUOUS, |
| 712 | snd_dma_continuous_data(GFP_KERNEL), |
| 713 | 0, 64*1024); |
| 714 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | return 0; |
| 716 | } |
| 717 | |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 718 | /* |
| 719 | * mixer interface |
| 720 | */ |
| 721 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | #define DUMMY_VOLUME(xname, xindex, addr) \ |
Takashi Iwai | fb567a8 | 2006-08-23 13:07:19 +0200 | [diff] [blame] | 723 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ |
| 724 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \ |
| 725 | .name = xname, .index = xindex, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | .info = snd_dummy_volume_info, \ |
| 727 | .get = snd_dummy_volume_get, .put = snd_dummy_volume_put, \ |
Takashi Iwai | fb567a8 | 2006-08-23 13:07:19 +0200 | [diff] [blame] | 728 | .private_value = addr, \ |
| 729 | .tlv = { .p = db_scale_dummy } } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 731 | static int snd_dummy_volume_info(struct snd_kcontrol *kcontrol, |
| 732 | struct snd_ctl_elem_info *uinfo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | { |
| 734 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| 735 | uinfo->count = 2; |
| 736 | uinfo->value.integer.min = -50; |
| 737 | uinfo->value.integer.max = 100; |
| 738 | return 0; |
| 739 | } |
| 740 | |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 741 | static int snd_dummy_volume_get(struct snd_kcontrol *kcontrol, |
| 742 | struct snd_ctl_elem_value *ucontrol) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | { |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 744 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | int addr = kcontrol->private_value; |
| 746 | |
Takashi Iwai | c8eb6ba | 2005-11-17 10:20:23 +0100 | [diff] [blame] | 747 | spin_lock_irq(&dummy->mixer_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | ucontrol->value.integer.value[0] = dummy->mixer_volume[addr][0]; |
| 749 | ucontrol->value.integer.value[1] = dummy->mixer_volume[addr][1]; |
Takashi Iwai | c8eb6ba | 2005-11-17 10:20:23 +0100 | [diff] [blame] | 750 | spin_unlock_irq(&dummy->mixer_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | return 0; |
| 752 | } |
| 753 | |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 754 | static int snd_dummy_volume_put(struct snd_kcontrol *kcontrol, |
| 755 | struct snd_ctl_elem_value *ucontrol) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | { |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 757 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | int change, addr = kcontrol->private_value; |
| 759 | int left, right; |
| 760 | |
| 761 | left = ucontrol->value.integer.value[0]; |
| 762 | if (left < -50) |
| 763 | left = -50; |
| 764 | if (left > 100) |
| 765 | left = 100; |
| 766 | right = ucontrol->value.integer.value[1]; |
| 767 | if (right < -50) |
| 768 | right = -50; |
| 769 | if (right > 100) |
| 770 | right = 100; |
Takashi Iwai | c8eb6ba | 2005-11-17 10:20:23 +0100 | [diff] [blame] | 771 | spin_lock_irq(&dummy->mixer_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | change = dummy->mixer_volume[addr][0] != left || |
| 773 | dummy->mixer_volume[addr][1] != right; |
| 774 | dummy->mixer_volume[addr][0] = left; |
| 775 | dummy->mixer_volume[addr][1] = right; |
Takashi Iwai | c8eb6ba | 2005-11-17 10:20:23 +0100 | [diff] [blame] | 776 | spin_unlock_irq(&dummy->mixer_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | return change; |
| 778 | } |
| 779 | |
Takashi Iwai | 0cb29ea | 2007-01-29 15:33:49 +0100 | [diff] [blame] | 780 | static const DECLARE_TLV_DB_SCALE(db_scale_dummy, -4500, 30, 0); |
Takashi Iwai | fb567a8 | 2006-08-23 13:07:19 +0200 | [diff] [blame] | 781 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | #define DUMMY_CAPSRC(xname, xindex, addr) \ |
| 783 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ |
| 784 | .info = snd_dummy_capsrc_info, \ |
| 785 | .get = snd_dummy_capsrc_get, .put = snd_dummy_capsrc_put, \ |
| 786 | .private_value = addr } |
| 787 | |
Takashi Iwai | a5ce889 | 2007-07-23 15:42:26 +0200 | [diff] [blame] | 788 | #define snd_dummy_capsrc_info snd_ctl_boolean_stereo_info |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 790 | static int snd_dummy_capsrc_get(struct snd_kcontrol *kcontrol, |
| 791 | struct snd_ctl_elem_value *ucontrol) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | { |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 793 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | int addr = kcontrol->private_value; |
| 795 | |
Takashi Iwai | c8eb6ba | 2005-11-17 10:20:23 +0100 | [diff] [blame] | 796 | spin_lock_irq(&dummy->mixer_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | ucontrol->value.integer.value[0] = dummy->capture_source[addr][0]; |
| 798 | ucontrol->value.integer.value[1] = dummy->capture_source[addr][1]; |
Takashi Iwai | c8eb6ba | 2005-11-17 10:20:23 +0100 | [diff] [blame] | 799 | spin_unlock_irq(&dummy->mixer_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | return 0; |
| 801 | } |
| 802 | |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 803 | static int snd_dummy_capsrc_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | { |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 805 | struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | int change, addr = kcontrol->private_value; |
| 807 | int left, right; |
| 808 | |
| 809 | left = ucontrol->value.integer.value[0] & 1; |
| 810 | right = ucontrol->value.integer.value[1] & 1; |
Takashi Iwai | c8eb6ba | 2005-11-17 10:20:23 +0100 | [diff] [blame] | 811 | spin_lock_irq(&dummy->mixer_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | change = dummy->capture_source[addr][0] != left && |
| 813 | dummy->capture_source[addr][1] != right; |
| 814 | dummy->capture_source[addr][0] = left; |
| 815 | dummy->capture_source[addr][1] = right; |
Takashi Iwai | c8eb6ba | 2005-11-17 10:20:23 +0100 | [diff] [blame] | 816 | spin_unlock_irq(&dummy->mixer_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | return change; |
| 818 | } |
| 819 | |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 820 | static struct snd_kcontrol_new snd_dummy_controls[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 821 | DUMMY_VOLUME("Master Volume", 0, MIXER_ADDR_MASTER), |
| 822 | DUMMY_CAPSRC("Master Capture Switch", 0, MIXER_ADDR_MASTER), |
| 823 | DUMMY_VOLUME("Synth Volume", 0, MIXER_ADDR_SYNTH), |
Takashi Iwai | e05d696 | 2006-08-17 17:12:19 +0200 | [diff] [blame] | 824 | DUMMY_CAPSRC("Synth Capture Switch", 0, MIXER_ADDR_SYNTH), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | DUMMY_VOLUME("Line Volume", 0, MIXER_ADDR_LINE), |
Takashi Iwai | e05d696 | 2006-08-17 17:12:19 +0200 | [diff] [blame] | 826 | DUMMY_CAPSRC("Line Capture Switch", 0, MIXER_ADDR_LINE), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | DUMMY_VOLUME("Mic Volume", 0, MIXER_ADDR_MIC), |
Takashi Iwai | e05d696 | 2006-08-17 17:12:19 +0200 | [diff] [blame] | 828 | DUMMY_CAPSRC("Mic Capture Switch", 0, MIXER_ADDR_MIC), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | DUMMY_VOLUME("CD Volume", 0, MIXER_ADDR_CD), |
Takashi Iwai | e05d696 | 2006-08-17 17:12:19 +0200 | [diff] [blame] | 830 | DUMMY_CAPSRC("CD Capture Switch", 0, MIXER_ADDR_CD) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | }; |
| 832 | |
Prarit Bhargava | 788c604 | 2007-02-13 13:11:11 +0100 | [diff] [blame] | 833 | static int __devinit snd_card_dummy_new_mixer(struct snd_dummy *dummy) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | { |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 835 | struct snd_card *card = dummy->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | unsigned int idx; |
| 837 | int err; |
| 838 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | spin_lock_init(&dummy->mixer_lock); |
| 840 | strcpy(card->mixername, "Dummy Mixer"); |
| 841 | |
| 842 | for (idx = 0; idx < ARRAY_SIZE(snd_dummy_controls); idx++) { |
Jaroslav Kysela | 1a11cb6 | 2008-08-15 12:59:02 +0200 | [diff] [blame] | 843 | err = snd_ctl_add(card, snd_ctl_new1(&snd_dummy_controls[idx], dummy)); |
| 844 | if (err < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | return err; |
| 846 | } |
| 847 | return 0; |
| 848 | } |
| 849 | |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 850 | #if defined(CONFIG_SND_DEBUG) && defined(CONFIG_PROC_FS) |
| 851 | /* |
| 852 | * proc interface |
| 853 | */ |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 854 | static void print_formats(struct snd_dummy *dummy, |
| 855 | struct snd_info_buffer *buffer) |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 856 | { |
| 857 | int i; |
| 858 | |
| 859 | for (i = 0; i < SNDRV_PCM_FORMAT_LAST; i++) { |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 860 | if (dummy->pcm_hw.formats & (1ULL << i)) |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 861 | snd_iprintf(buffer, " %s", snd_pcm_format_name(i)); |
| 862 | } |
| 863 | } |
| 864 | |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 865 | static void print_rates(struct snd_dummy *dummy, |
| 866 | struct snd_info_buffer *buffer) |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 867 | { |
| 868 | static int rates[] = { |
| 869 | 5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000, |
| 870 | 64000, 88200, 96000, 176400, 192000, |
| 871 | }; |
| 872 | int i; |
| 873 | |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 874 | if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_CONTINUOUS) |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 875 | snd_iprintf(buffer, " continuous"); |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 876 | if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_KNOT) |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 877 | snd_iprintf(buffer, " knot"); |
| 878 | for (i = 0; i < ARRAY_SIZE(rates); i++) |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 879 | if (dummy->pcm_hw.rates & (1 << i)) |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 880 | snd_iprintf(buffer, " %d", rates[i]); |
| 881 | } |
| 882 | |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 883 | #define get_dummy_int_ptr(dummy, ofs) \ |
| 884 | (unsigned int *)((char *)&((dummy)->pcm_hw) + (ofs)) |
| 885 | #define get_dummy_ll_ptr(dummy, ofs) \ |
| 886 | (unsigned long long *)((char *)&((dummy)->pcm_hw) + (ofs)) |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 887 | |
| 888 | struct dummy_hw_field { |
| 889 | const char *name; |
| 890 | const char *format; |
| 891 | unsigned int offset; |
| 892 | unsigned int size; |
| 893 | }; |
| 894 | #define FIELD_ENTRY(item, fmt) { \ |
| 895 | .name = #item, \ |
| 896 | .format = fmt, \ |
| 897 | .offset = offsetof(struct snd_pcm_hardware, item), \ |
| 898 | .size = sizeof(dummy_pcm_hardware.item) } |
| 899 | |
| 900 | static struct dummy_hw_field fields[] = { |
| 901 | FIELD_ENTRY(formats, "%#llx"), |
| 902 | FIELD_ENTRY(rates, "%#x"), |
| 903 | FIELD_ENTRY(rate_min, "%d"), |
| 904 | FIELD_ENTRY(rate_max, "%d"), |
| 905 | FIELD_ENTRY(channels_min, "%d"), |
| 906 | FIELD_ENTRY(channels_max, "%d"), |
| 907 | FIELD_ENTRY(buffer_bytes_max, "%ld"), |
| 908 | FIELD_ENTRY(period_bytes_min, "%ld"), |
| 909 | FIELD_ENTRY(period_bytes_max, "%ld"), |
| 910 | FIELD_ENTRY(periods_min, "%d"), |
| 911 | FIELD_ENTRY(periods_max, "%d"), |
| 912 | }; |
| 913 | |
| 914 | static void dummy_proc_read(struct snd_info_entry *entry, |
| 915 | struct snd_info_buffer *buffer) |
| 916 | { |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 917 | struct snd_dummy *dummy = entry->private_data; |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 918 | int i; |
| 919 | |
| 920 | for (i = 0; i < ARRAY_SIZE(fields); i++) { |
| 921 | snd_iprintf(buffer, "%s ", fields[i].name); |
| 922 | if (fields[i].size == sizeof(int)) |
| 923 | snd_iprintf(buffer, fields[i].format, |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 924 | *get_dummy_int_ptr(dummy, fields[i].offset)); |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 925 | else |
| 926 | snd_iprintf(buffer, fields[i].format, |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 927 | *get_dummy_ll_ptr(dummy, fields[i].offset)); |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 928 | if (!strcmp(fields[i].name, "formats")) |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 929 | print_formats(dummy, buffer); |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 930 | else if (!strcmp(fields[i].name, "rates")) |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 931 | print_rates(dummy, buffer); |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 932 | snd_iprintf(buffer, "\n"); |
| 933 | } |
| 934 | } |
| 935 | |
| 936 | static void dummy_proc_write(struct snd_info_entry *entry, |
| 937 | struct snd_info_buffer *buffer) |
| 938 | { |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 939 | struct snd_dummy *dummy = entry->private_data; |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 940 | char line[64]; |
| 941 | |
| 942 | while (!snd_info_get_line(buffer, line, sizeof(line))) { |
| 943 | char item[20]; |
| 944 | const char *ptr; |
| 945 | unsigned long long val; |
| 946 | int i; |
| 947 | |
| 948 | ptr = snd_info_get_str(item, line, sizeof(item)); |
| 949 | for (i = 0; i < ARRAY_SIZE(fields); i++) { |
| 950 | if (!strcmp(item, fields[i].name)) |
| 951 | break; |
| 952 | } |
| 953 | if (i >= ARRAY_SIZE(fields)) |
| 954 | continue; |
| 955 | snd_info_get_str(item, ptr, sizeof(item)); |
| 956 | if (strict_strtoull(item, 0, &val)) |
| 957 | continue; |
| 958 | if (fields[i].size == sizeof(int)) |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 959 | *get_dummy_int_ptr(dummy, fields[i].offset) = val; |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 960 | else |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 961 | *get_dummy_ll_ptr(dummy, fields[i].offset) = val; |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 962 | } |
| 963 | } |
| 964 | |
| 965 | static void __devinit dummy_proc_init(struct snd_dummy *chip) |
| 966 | { |
| 967 | struct snd_info_entry *entry; |
| 968 | |
| 969 | if (!snd_card_proc_new(chip->card, "dummy_pcm", &entry)) { |
| 970 | snd_info_set_text_ops(entry, chip, dummy_proc_read); |
| 971 | entry->c.text.write = dummy_proc_write; |
| 972 | entry->mode |= S_IWUSR; |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 973 | entry->private_data = chip; |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 974 | } |
| 975 | } |
| 976 | #else |
| 977 | #define dummy_proc_init(x) |
| 978 | #endif /* CONFIG_SND_DEBUG && CONFIG_PROC_FS */ |
| 979 | |
Prarit Bhargava | 788c604 | 2007-02-13 13:11:11 +0100 | [diff] [blame] | 980 | static int __devinit snd_dummy_probe(struct platform_device *devptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | { |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 982 | struct snd_card *card; |
| 983 | struct snd_dummy *dummy; |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 984 | struct dummy_model *m = NULL, **mdl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | int idx, err; |
Takashi Iwai | 6e65c1c | 2005-11-17 16:01:56 +0100 | [diff] [blame] | 986 | int dev = devptr->id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | |
Takashi Iwai | bd7dd77 | 2008-12-28 16:45:02 +0100 | [diff] [blame] | 988 | err = snd_card_create(index[dev], id[dev], THIS_MODULE, |
| 989 | sizeof(struct snd_dummy), &card); |
| 990 | if (err < 0) |
| 991 | return err; |
Takashi Iwai | 4a4d2cf | 2005-11-17 14:27:28 +0100 | [diff] [blame] | 992 | dummy = card->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | dummy->card = card; |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 994 | for (mdl = dummy_models; *mdl && model[dev]; mdl++) { |
| 995 | if (strcmp(model[dev], (*mdl)->name) == 0) { |
| 996 | printk(KERN_INFO |
| 997 | "snd-dummy: Using model '%s' for card %i\n", |
| 998 | (*mdl)->name, card->number); |
| 999 | m = dummy->model = *mdl; |
| 1000 | break; |
| 1001 | } |
| 1002 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | for (idx = 0; idx < MAX_PCM_DEVICES && idx < pcm_devs[dev]; idx++) { |
| 1004 | if (pcm_substreams[dev] < 1) |
| 1005 | pcm_substreams[dev] = 1; |
| 1006 | if (pcm_substreams[dev] > MAX_PCM_SUBSTREAMS) |
| 1007 | pcm_substreams[dev] = MAX_PCM_SUBSTREAMS; |
Jaroslav Kysela | 1a11cb6 | 2008-08-15 12:59:02 +0200 | [diff] [blame] | 1008 | err = snd_card_dummy_pcm(dummy, idx, pcm_substreams[dev]); |
| 1009 | if (err < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | goto __nodev; |
| 1011 | } |
Jaroslav Kysela | d5e1ca0 | 2010-02-02 17:48:51 +0100 | [diff] [blame] | 1012 | |
| 1013 | dummy->pcm_hw = dummy_pcm_hardware; |
| 1014 | if (m) { |
| 1015 | if (m->formats) |
| 1016 | dummy->pcm_hw.formats = m->formats; |
| 1017 | if (m->buffer_bytes_max) |
| 1018 | dummy->pcm_hw.buffer_bytes_max = m->buffer_bytes_max; |
| 1019 | if (m->period_bytes_min) |
| 1020 | dummy->pcm_hw.period_bytes_min = m->period_bytes_min; |
| 1021 | if (m->period_bytes_max) |
| 1022 | dummy->pcm_hw.period_bytes_max = m->period_bytes_max; |
| 1023 | if (m->periods_min) |
| 1024 | dummy->pcm_hw.periods_min = m->periods_min; |
| 1025 | if (m->periods_max) |
| 1026 | dummy->pcm_hw.periods_max = m->periods_max; |
| 1027 | if (m->rates) |
| 1028 | dummy->pcm_hw.rates = m->rates; |
| 1029 | if (m->rate_min) |
| 1030 | dummy->pcm_hw.rate_min = m->rate_min; |
| 1031 | if (m->rate_max) |
| 1032 | dummy->pcm_hw.rate_max = m->rate_max; |
| 1033 | if (m->channels_min) |
| 1034 | dummy->pcm_hw.channels_min = m->channels_min; |
| 1035 | if (m->channels_max) |
| 1036 | dummy->pcm_hw.channels_max = m->channels_max; |
| 1037 | } |
| 1038 | |
Jaroslav Kysela | 1a11cb6 | 2008-08-15 12:59:02 +0200 | [diff] [blame] | 1039 | err = snd_card_dummy_new_mixer(dummy); |
| 1040 | if (err < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | goto __nodev; |
| 1042 | strcpy(card->driver, "Dummy"); |
| 1043 | strcpy(card->shortname, "Dummy"); |
| 1044 | sprintf(card->longname, "Dummy %i", dev + 1); |
Takashi Iwai | 16dab54 | 2005-09-05 17:17:58 +0200 | [diff] [blame] | 1045 | |
Takashi Iwai | 9b151fe | 2009-09-08 14:30:49 +0200 | [diff] [blame] | 1046 | dummy_proc_init(dummy); |
| 1047 | |
Takashi Iwai | 6e65c1c | 2005-11-17 16:01:56 +0100 | [diff] [blame] | 1048 | snd_card_set_dev(card, &devptr->dev); |
Takashi Iwai | 16dab54 | 2005-09-05 17:17:58 +0200 | [diff] [blame] | 1049 | |
Jaroslav Kysela | 1a11cb6 | 2008-08-15 12:59:02 +0200 | [diff] [blame] | 1050 | err = snd_card_register(card); |
| 1051 | if (err == 0) { |
Takashi Iwai | 6e65c1c | 2005-11-17 16:01:56 +0100 | [diff] [blame] | 1052 | platform_set_drvdata(devptr, card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1053 | return 0; |
| 1054 | } |
| 1055 | __nodev: |
| 1056 | snd_card_free(card); |
| 1057 | return err; |
| 1058 | } |
| 1059 | |
Prarit Bhargava | 788c604 | 2007-02-13 13:11:11 +0100 | [diff] [blame] | 1060 | static int __devexit snd_dummy_remove(struct platform_device *devptr) |
Takashi Iwai | 6e65c1c | 2005-11-17 16:01:56 +0100 | [diff] [blame] | 1061 | { |
| 1062 | snd_card_free(platform_get_drvdata(devptr)); |
| 1063 | platform_set_drvdata(devptr, NULL); |
| 1064 | return 0; |
| 1065 | } |
| 1066 | |
| 1067 | #ifdef CONFIG_PM |
| 1068 | static int snd_dummy_suspend(struct platform_device *pdev, pm_message_t state) |
| 1069 | { |
| 1070 | struct snd_card *card = platform_get_drvdata(pdev); |
| 1071 | struct snd_dummy *dummy = card->private_data; |
| 1072 | |
| 1073 | snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
| 1074 | snd_pcm_suspend_all(dummy->pcm); |
| 1075 | return 0; |
| 1076 | } |
| 1077 | |
| 1078 | static int snd_dummy_resume(struct platform_device *pdev) |
| 1079 | { |
| 1080 | struct snd_card *card = platform_get_drvdata(pdev); |
| 1081 | |
| 1082 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); |
| 1083 | return 0; |
| 1084 | } |
| 1085 | #endif |
| 1086 | |
| 1087 | #define SND_DUMMY_DRIVER "snd_dummy" |
| 1088 | |
| 1089 | static struct platform_driver snd_dummy_driver = { |
| 1090 | .probe = snd_dummy_probe, |
Prarit Bhargava | 788c604 | 2007-02-13 13:11:11 +0100 | [diff] [blame] | 1091 | .remove = __devexit_p(snd_dummy_remove), |
Takashi Iwai | 6e65c1c | 2005-11-17 16:01:56 +0100 | [diff] [blame] | 1092 | #ifdef CONFIG_PM |
| 1093 | .suspend = snd_dummy_suspend, |
| 1094 | .resume = snd_dummy_resume, |
| 1095 | #endif |
| 1096 | .driver = { |
| 1097 | .name = SND_DUMMY_DRIVER |
| 1098 | }, |
| 1099 | }; |
| 1100 | |
Randy Dunlap | c12aad6 | 2007-06-25 12:08:01 +0200 | [diff] [blame] | 1101 | static void snd_dummy_unregister_all(void) |
Clemens Ladisch | f7a9275 | 2005-12-07 09:13:42 +0100 | [diff] [blame] | 1102 | { |
| 1103 | int i; |
| 1104 | |
| 1105 | for (i = 0; i < ARRAY_SIZE(devices); ++i) |
| 1106 | platform_device_unregister(devices[i]); |
| 1107 | platform_driver_unregister(&snd_dummy_driver); |
Takashi Iwai | a68c4d1 | 2009-09-04 12:19:36 +0200 | [diff] [blame] | 1108 | free_fake_buffer(); |
Clemens Ladisch | f7a9275 | 2005-12-07 09:13:42 +0100 | [diff] [blame] | 1109 | } |
| 1110 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | static int __init alsa_card_dummy_init(void) |
| 1112 | { |
Takashi Iwai | 6e65c1c | 2005-11-17 16:01:56 +0100 | [diff] [blame] | 1113 | int i, cards, err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | |
Jaroslav Kysela | 1a11cb6 | 2008-08-15 12:59:02 +0200 | [diff] [blame] | 1115 | err = platform_driver_register(&snd_dummy_driver); |
| 1116 | if (err < 0) |
Takashi Iwai | 6e65c1c | 2005-11-17 16:01:56 +0100 | [diff] [blame] | 1117 | return err; |
| 1118 | |
Takashi Iwai | a68c4d1 | 2009-09-04 12:19:36 +0200 | [diff] [blame] | 1119 | err = alloc_fake_buffer(); |
| 1120 | if (err < 0) { |
| 1121 | platform_driver_unregister(&snd_dummy_driver); |
| 1122 | return err; |
| 1123 | } |
| 1124 | |
Takashi Iwai | 6e65c1c | 2005-11-17 16:01:56 +0100 | [diff] [blame] | 1125 | cards = 0; |
Takashi Iwai | 8278ca8 | 2006-02-20 11:57:34 +0100 | [diff] [blame] | 1126 | for (i = 0; i < SNDRV_CARDS; i++) { |
Takashi Iwai | 6e65c1c | 2005-11-17 16:01:56 +0100 | [diff] [blame] | 1127 | struct platform_device *device; |
Takashi Iwai | 8278ca8 | 2006-02-20 11:57:34 +0100 | [diff] [blame] | 1128 | if (! enable[i]) |
| 1129 | continue; |
Takashi Iwai | 6e65c1c | 2005-11-17 16:01:56 +0100 | [diff] [blame] | 1130 | device = platform_device_register_simple(SND_DUMMY_DRIVER, |
| 1131 | i, NULL, 0); |
Rene Herman | a182ee9 | 2006-04-13 12:57:11 +0200 | [diff] [blame] | 1132 | if (IS_ERR(device)) |
| 1133 | continue; |
Rene Herman | 7152447 | 2006-04-13 12:58:06 +0200 | [diff] [blame] | 1134 | if (!platform_get_drvdata(device)) { |
| 1135 | platform_device_unregister(device); |
| 1136 | continue; |
| 1137 | } |
Clemens Ladisch | f7a9275 | 2005-12-07 09:13:42 +0100 | [diff] [blame] | 1138 | devices[i] = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | cards++; |
| 1140 | } |
| 1141 | if (!cards) { |
| 1142 | #ifdef MODULE |
| 1143 | printk(KERN_ERR "Dummy soundcard not found or device busy\n"); |
| 1144 | #endif |
Rene Herman | a182ee9 | 2006-04-13 12:57:11 +0200 | [diff] [blame] | 1145 | snd_dummy_unregister_all(); |
| 1146 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | } |
| 1148 | return 0; |
| 1149 | } |
| 1150 | |
| 1151 | static void __exit alsa_card_dummy_exit(void) |
| 1152 | { |
Clemens Ladisch | f7a9275 | 2005-12-07 09:13:42 +0100 | [diff] [blame] | 1153 | snd_dummy_unregister_all(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | } |
| 1155 | |
| 1156 | module_init(alsa_card_dummy_init) |
| 1157 | module_exit(alsa_card_dummy_exit) |