11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * Dummy soundcard 3c1017a4cSJaroslav Kysela * Copyright (c) by Jaroslav Kysela <perex@perex.cz> 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or modify 61da177e4SLinus Torvalds * it under the terms of the GNU General Public License as published by 71da177e4SLinus Torvalds * the Free Software Foundation; either version 2 of the License, or 81da177e4SLinus Torvalds * (at your option) any later version. 91da177e4SLinus Torvalds * 101da177e4SLinus Torvalds * This program is distributed in the hope that it will be useful, 111da177e4SLinus Torvalds * but WITHOUT ANY WARRANTY; without even the implied warranty of 121da177e4SLinus Torvalds * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 131da177e4SLinus Torvalds * GNU General Public License for more details. 141da177e4SLinus Torvalds * 151da177e4SLinus Torvalds * You should have received a copy of the GNU General Public License 161da177e4SLinus Torvalds * along with this program; if not, write to the Free Software 171da177e4SLinus Torvalds * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 181da177e4SLinus Torvalds * 191da177e4SLinus Torvalds */ 201da177e4SLinus Torvalds 211da177e4SLinus Torvalds #include <linux/init.h> 226e65c1ccSTakashi Iwai #include <linux/err.h> 236e65c1ccSTakashi Iwai #include <linux/platform_device.h> 241da177e4SLinus Torvalds #include <linux/jiffies.h> 251da177e4SLinus Torvalds #include <linux/slab.h> 261da177e4SLinus Torvalds #include <linux/time.h> 271da177e4SLinus Torvalds #include <linux/wait.h> 28c631d03cSTakashi Iwai #include <linux/hrtimer.h> 29c631d03cSTakashi Iwai #include <linux/math64.h> 3065a77217SPaul Gortmaker #include <linux/module.h> 311da177e4SLinus Torvalds #include <sound/core.h> 321da177e4SLinus Torvalds #include <sound/control.h> 33fb567a8eSTakashi Iwai #include <sound/tlv.h> 341da177e4SLinus Torvalds #include <sound/pcm.h> 351da177e4SLinus Torvalds #include <sound/rawmidi.h> 369b151fecSTakashi Iwai #include <sound/info.h> 371da177e4SLinus Torvalds #include <sound/initval.h> 381da177e4SLinus Torvalds 39c1017a4cSJaroslav Kysela MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); 401da177e4SLinus Torvalds MODULE_DESCRIPTION("Dummy soundcard (/dev/null)"); 411da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 421da177e4SLinus Torvalds MODULE_SUPPORTED_DEVICE("{{ALSA,Dummy soundcard}}"); 431da177e4SLinus Torvalds 441da177e4SLinus Torvalds #define MAX_PCM_DEVICES 4 45b888d1ceSTakashi Iwai #define MAX_PCM_SUBSTREAMS 128 461da177e4SLinus Torvalds #define MAX_MIDI_DEVICES 2 471da177e4SLinus Torvalds 481da177e4SLinus Torvalds /* defaults */ 491da177e4SLinus Torvalds #define MAX_BUFFER_SIZE (64*1024) 50d5e1ca05SJaroslav Kysela #define MIN_PERIOD_SIZE 64 512ad5dd8dSJaroslav Kysela #define MAX_PERIOD_SIZE MAX_BUFFER_SIZE 521da177e4SLinus Torvalds #define USE_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE) 531da177e4SLinus Torvalds #define USE_RATE SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000 541da177e4SLinus Torvalds #define USE_RATE_MIN 5500 551da177e4SLinus Torvalds #define USE_RATE_MAX 48000 561da177e4SLinus Torvalds #define USE_CHANNELS_MIN 1 571da177e4SLinus Torvalds #define USE_CHANNELS_MAX 2 581da177e4SLinus Torvalds #define USE_PERIODS_MIN 1 591da177e4SLinus Torvalds #define USE_PERIODS_MAX 1024 601da177e4SLinus Torvalds 611da177e4SLinus Torvalds static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ 621da177e4SLinus Torvalds static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ 63*a67ff6a5SRusty Russell static bool enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0}; 64d5e1ca05SJaroslav Kysela static char *model[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = NULL}; 651da177e4SLinus Torvalds static int pcm_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1}; 661da177e4SLinus Torvalds static int pcm_substreams[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 8}; 671da177e4SLinus Torvalds //static int midi_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2}; 68c631d03cSTakashi Iwai #ifdef CONFIG_HIGH_RES_TIMERS 69*a67ff6a5SRusty Russell static bool hrtimer = 1; 70c631d03cSTakashi Iwai #endif 71*a67ff6a5SRusty Russell static bool fake_buffer = 1; 721da177e4SLinus Torvalds 731da177e4SLinus Torvalds module_param_array(index, int, NULL, 0444); 741da177e4SLinus Torvalds MODULE_PARM_DESC(index, "Index value for dummy soundcard."); 751da177e4SLinus Torvalds module_param_array(id, charp, NULL, 0444); 761da177e4SLinus Torvalds MODULE_PARM_DESC(id, "ID string for dummy soundcard."); 771da177e4SLinus Torvalds module_param_array(enable, bool, NULL, 0444); 781da177e4SLinus Torvalds MODULE_PARM_DESC(enable, "Enable this dummy soundcard."); 79d5e1ca05SJaroslav Kysela module_param_array(model, charp, NULL, 0444); 80d5e1ca05SJaroslav Kysela MODULE_PARM_DESC(model, "Soundcard model."); 811da177e4SLinus Torvalds module_param_array(pcm_devs, int, NULL, 0444); 821da177e4SLinus Torvalds MODULE_PARM_DESC(pcm_devs, "PCM devices # (0-4) for dummy driver."); 831da177e4SLinus Torvalds module_param_array(pcm_substreams, int, NULL, 0444); 8423aebca4STakashi Iwai MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-128) for dummy driver."); 851da177e4SLinus Torvalds //module_param_array(midi_devs, int, NULL, 0444); 861da177e4SLinus Torvalds //MODULE_PARM_DESC(midi_devs, "MIDI devices # (0-2) for dummy driver."); 87a68c4d11STakashi Iwai module_param(fake_buffer, bool, 0444); 88a68c4d11STakashi Iwai MODULE_PARM_DESC(fake_buffer, "Fake buffer allocations."); 89c631d03cSTakashi Iwai #ifdef CONFIG_HIGH_RES_TIMERS 90c631d03cSTakashi Iwai module_param(hrtimer, bool, 0644); 91c631d03cSTakashi Iwai MODULE_PARM_DESC(hrtimer, "Use hrtimer as the timer source."); 92c631d03cSTakashi Iwai #endif 931da177e4SLinus Torvalds 94f7a9275dSClemens Ladisch static struct platform_device *devices[SNDRV_CARDS]; 95f7a9275dSClemens Ladisch 961da177e4SLinus Torvalds #define MIXER_ADDR_MASTER 0 971da177e4SLinus Torvalds #define MIXER_ADDR_LINE 1 981da177e4SLinus Torvalds #define MIXER_ADDR_MIC 2 991da177e4SLinus Torvalds #define MIXER_ADDR_SYNTH 3 1001da177e4SLinus Torvalds #define MIXER_ADDR_CD 4 1011da177e4SLinus Torvalds #define MIXER_ADDR_LAST 4 1021da177e4SLinus Torvalds 103c631d03cSTakashi Iwai struct dummy_timer_ops { 104c631d03cSTakashi Iwai int (*create)(struct snd_pcm_substream *); 105c631d03cSTakashi Iwai void (*free)(struct snd_pcm_substream *); 106c631d03cSTakashi Iwai int (*prepare)(struct snd_pcm_substream *); 107c631d03cSTakashi Iwai int (*start)(struct snd_pcm_substream *); 108c631d03cSTakashi Iwai int (*stop)(struct snd_pcm_substream *); 109c631d03cSTakashi Iwai snd_pcm_uframes_t (*pointer)(struct snd_pcm_substream *); 110c631d03cSTakashi Iwai }; 111c631d03cSTakashi Iwai 112d5e1ca05SJaroslav Kysela struct dummy_model { 113d5e1ca05SJaroslav Kysela const char *name; 114d5e1ca05SJaroslav Kysela int (*playback_constraints)(struct snd_pcm_runtime *runtime); 115d5e1ca05SJaroslav Kysela int (*capture_constraints)(struct snd_pcm_runtime *runtime); 116d5e1ca05SJaroslav Kysela u64 formats; 117d5e1ca05SJaroslav Kysela size_t buffer_bytes_max; 118d5e1ca05SJaroslav Kysela size_t period_bytes_min; 119d5e1ca05SJaroslav Kysela size_t period_bytes_max; 120d5e1ca05SJaroslav Kysela unsigned int periods_min; 121d5e1ca05SJaroslav Kysela unsigned int periods_max; 122d5e1ca05SJaroslav Kysela unsigned int rates; 123d5e1ca05SJaroslav Kysela unsigned int rate_min; 124d5e1ca05SJaroslav Kysela unsigned int rate_max; 125d5e1ca05SJaroslav Kysela unsigned int channels_min; 126d5e1ca05SJaroslav Kysela unsigned int channels_max; 127d5e1ca05SJaroslav Kysela }; 128d5e1ca05SJaroslav Kysela 1294a4d2cfdSTakashi Iwai struct snd_dummy { 1304a4d2cfdSTakashi Iwai struct snd_card *card; 131d5e1ca05SJaroslav Kysela struct dummy_model *model; 1326e65c1ccSTakashi Iwai struct snd_pcm *pcm; 133d5e1ca05SJaroslav Kysela struct snd_pcm_hardware pcm_hw; 1341da177e4SLinus Torvalds spinlock_t mixer_lock; 1351da177e4SLinus Torvalds int mixer_volume[MIXER_ADDR_LAST+1][2]; 1361da177e4SLinus Torvalds int capture_source[MIXER_ADDR_LAST+1][2]; 137c631d03cSTakashi Iwai const struct dummy_timer_ops *timer_ops; 1384a4d2cfdSTakashi Iwai }; 1391da177e4SLinus Torvalds 140c631d03cSTakashi Iwai /* 141d5e1ca05SJaroslav Kysela * card models 142d5e1ca05SJaroslav Kysela */ 143d5e1ca05SJaroslav Kysela 144d5e1ca05SJaroslav Kysela static int emu10k1_playback_constraints(struct snd_pcm_runtime *runtime) 145d5e1ca05SJaroslav Kysela { 146d5e1ca05SJaroslav Kysela int err; 147d5e1ca05SJaroslav Kysela err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); 148d5e1ca05SJaroslav Kysela if (err < 0) 149d5e1ca05SJaroslav Kysela return err; 150d5e1ca05SJaroslav Kysela err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 256, UINT_MAX); 151d5e1ca05SJaroslav Kysela if (err < 0) 152d5e1ca05SJaroslav Kysela return err; 153d5e1ca05SJaroslav Kysela return 0; 154d5e1ca05SJaroslav Kysela } 155d5e1ca05SJaroslav Kysela 156d5e1ca05SJaroslav Kysela struct dummy_model model_emu10k1 = { 157d5e1ca05SJaroslav Kysela .name = "emu10k1", 158d5e1ca05SJaroslav Kysela .playback_constraints = emu10k1_playback_constraints, 159d5e1ca05SJaroslav Kysela .buffer_bytes_max = 128 * 1024, 160d5e1ca05SJaroslav Kysela }; 161d5e1ca05SJaroslav Kysela 162d5e1ca05SJaroslav Kysela struct dummy_model model_rme9652 = { 163d5e1ca05SJaroslav Kysela .name = "rme9652", 164d5e1ca05SJaroslav Kysela .buffer_bytes_max = 26 * 64 * 1024, 165d5e1ca05SJaroslav Kysela .formats = SNDRV_PCM_FMTBIT_S32_LE, 166d5e1ca05SJaroslav Kysela .channels_min = 26, 167d5e1ca05SJaroslav Kysela .channels_max = 26, 168d5e1ca05SJaroslav Kysela .periods_min = 2, 169d5e1ca05SJaroslav Kysela .periods_max = 2, 170d5e1ca05SJaroslav Kysela }; 171d5e1ca05SJaroslav Kysela 172d5e1ca05SJaroslav Kysela struct dummy_model model_ice1712 = { 173d5e1ca05SJaroslav Kysela .name = "ice1712", 174d5e1ca05SJaroslav Kysela .buffer_bytes_max = 256 * 1024, 175d5e1ca05SJaroslav Kysela .formats = SNDRV_PCM_FMTBIT_S32_LE, 176d5e1ca05SJaroslav Kysela .channels_min = 10, 177d5e1ca05SJaroslav Kysela .channels_max = 10, 178d5e1ca05SJaroslav Kysela .periods_min = 1, 179d5e1ca05SJaroslav Kysela .periods_max = 1024, 180d5e1ca05SJaroslav Kysela }; 181d5e1ca05SJaroslav Kysela 182d5e1ca05SJaroslav Kysela struct dummy_model model_uda1341 = { 183d5e1ca05SJaroslav Kysela .name = "uda1341", 184d5e1ca05SJaroslav Kysela .buffer_bytes_max = 16380, 185d5e1ca05SJaroslav Kysela .formats = SNDRV_PCM_FMTBIT_S16_LE, 186d5e1ca05SJaroslav Kysela .channels_min = 2, 187d5e1ca05SJaroslav Kysela .channels_max = 2, 188d5e1ca05SJaroslav Kysela .periods_min = 2, 189d5e1ca05SJaroslav Kysela .periods_max = 255, 190d5e1ca05SJaroslav Kysela }; 191d5e1ca05SJaroslav Kysela 192d5e1ca05SJaroslav Kysela struct dummy_model model_ac97 = { 193d5e1ca05SJaroslav Kysela .name = "ac97", 194d5e1ca05SJaroslav Kysela .formats = SNDRV_PCM_FMTBIT_S16_LE, 195d5e1ca05SJaroslav Kysela .channels_min = 2, 196d5e1ca05SJaroslav Kysela .channels_max = 2, 197d5e1ca05SJaroslav Kysela .rates = SNDRV_PCM_RATE_48000, 198d5e1ca05SJaroslav Kysela .rate_min = 48000, 199d5e1ca05SJaroslav Kysela .rate_max = 48000, 200d5e1ca05SJaroslav Kysela }; 201d5e1ca05SJaroslav Kysela 202d5e1ca05SJaroslav Kysela struct dummy_model model_ca0106 = { 203d5e1ca05SJaroslav Kysela .name = "ca0106", 204d5e1ca05SJaroslav Kysela .formats = SNDRV_PCM_FMTBIT_S16_LE, 205d5e1ca05SJaroslav Kysela .buffer_bytes_max = ((65536-64)*8), 206d5e1ca05SJaroslav Kysela .period_bytes_max = (65536-64), 207d5e1ca05SJaroslav Kysela .periods_min = 2, 208d5e1ca05SJaroslav Kysela .periods_max = 8, 209d5e1ca05SJaroslav Kysela .channels_min = 2, 210d5e1ca05SJaroslav Kysela .channels_max = 2, 211d5e1ca05SJaroslav Kysela .rates = SNDRV_PCM_RATE_48000|SNDRV_PCM_RATE_96000|SNDRV_PCM_RATE_192000, 212d5e1ca05SJaroslav Kysela .rate_min = 48000, 213d5e1ca05SJaroslav Kysela .rate_max = 192000, 214d5e1ca05SJaroslav Kysela }; 215d5e1ca05SJaroslav Kysela 216d5e1ca05SJaroslav Kysela struct dummy_model *dummy_models[] = { 217d5e1ca05SJaroslav Kysela &model_emu10k1, 218d5e1ca05SJaroslav Kysela &model_rme9652, 219d5e1ca05SJaroslav Kysela &model_ice1712, 220d5e1ca05SJaroslav Kysela &model_uda1341, 221d5e1ca05SJaroslav Kysela &model_ac97, 222d5e1ca05SJaroslav Kysela &model_ca0106, 223d5e1ca05SJaroslav Kysela NULL 224d5e1ca05SJaroslav Kysela }; 225d5e1ca05SJaroslav Kysela 226d5e1ca05SJaroslav Kysela /* 227c631d03cSTakashi Iwai * system timer interface 228c631d03cSTakashi Iwai */ 229c631d03cSTakashi Iwai 230c631d03cSTakashi Iwai struct dummy_systimer_pcm { 2311da177e4SLinus Torvalds spinlock_t lock; 2321da177e4SLinus Torvalds struct timer_list timer; 233b142037bSTakashi Iwai unsigned long base_time; 234b142037bSTakashi Iwai unsigned int frac_pos; /* fractional sample position (based HZ) */ 235b5d10781STakashi Iwai unsigned int frac_period_rest; 236b142037bSTakashi Iwai unsigned int frac_buffer_size; /* buffer_size * HZ */ 237b142037bSTakashi Iwai unsigned int frac_period_size; /* period_size * HZ */ 238b142037bSTakashi Iwai unsigned int rate; 239b5d10781STakashi Iwai int elapsed; 2404a4d2cfdSTakashi Iwai struct snd_pcm_substream *substream; 2414a4d2cfdSTakashi Iwai }; 2421da177e4SLinus Torvalds 243b142037bSTakashi Iwai static void dummy_systimer_rearm(struct dummy_systimer_pcm *dpcm) 244b142037bSTakashi Iwai { 245b142037bSTakashi Iwai dpcm->timer.expires = jiffies + 246b5d10781STakashi Iwai (dpcm->frac_period_rest + dpcm->rate - 1) / dpcm->rate; 247b142037bSTakashi Iwai add_timer(&dpcm->timer); 248b142037bSTakashi Iwai } 249b142037bSTakashi Iwai 250b142037bSTakashi Iwai static void dummy_systimer_update(struct dummy_systimer_pcm *dpcm) 251b142037bSTakashi Iwai { 252b142037bSTakashi Iwai unsigned long delta; 253b142037bSTakashi Iwai 254b142037bSTakashi Iwai delta = jiffies - dpcm->base_time; 255b142037bSTakashi Iwai if (!delta) 256b142037bSTakashi Iwai return; 257b5d10781STakashi Iwai dpcm->base_time += delta; 258b5d10781STakashi Iwai delta *= dpcm->rate; 259b5d10781STakashi Iwai dpcm->frac_pos += delta; 260b142037bSTakashi Iwai while (dpcm->frac_pos >= dpcm->frac_buffer_size) 261b142037bSTakashi Iwai dpcm->frac_pos -= dpcm->frac_buffer_size; 262b5d10781STakashi Iwai while (dpcm->frac_period_rest <= delta) { 263b5d10781STakashi Iwai dpcm->elapsed++; 264b5d10781STakashi Iwai dpcm->frac_period_rest += dpcm->frac_period_size; 265b5d10781STakashi Iwai } 266b5d10781STakashi Iwai dpcm->frac_period_rest -= delta; 267b142037bSTakashi Iwai } 268b142037bSTakashi Iwai 269c631d03cSTakashi Iwai static int dummy_systimer_start(struct snd_pcm_substream *substream) 2701da177e4SLinus Torvalds { 271c631d03cSTakashi Iwai struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; 272c631d03cSTakashi Iwai spin_lock(&dpcm->lock); 273b142037bSTakashi Iwai dpcm->base_time = jiffies; 274b142037bSTakashi Iwai dummy_systimer_rearm(dpcm); 275c8eb6ba1STakashi Iwai spin_unlock(&dpcm->lock); 2766e65c1ccSTakashi Iwai return 0; 2771da177e4SLinus Torvalds } 2781da177e4SLinus Torvalds 279c631d03cSTakashi Iwai static int dummy_systimer_stop(struct snd_pcm_substream *substream) 280c631d03cSTakashi Iwai { 281c631d03cSTakashi Iwai struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; 282c631d03cSTakashi Iwai spin_lock(&dpcm->lock); 283c631d03cSTakashi Iwai del_timer(&dpcm->timer); 284c631d03cSTakashi Iwai spin_unlock(&dpcm->lock); 285c631d03cSTakashi Iwai return 0; 286c631d03cSTakashi Iwai } 287c631d03cSTakashi Iwai 288c631d03cSTakashi Iwai static int dummy_systimer_prepare(struct snd_pcm_substream *substream) 2891da177e4SLinus Torvalds { 2904a4d2cfdSTakashi Iwai struct snd_pcm_runtime *runtime = substream->runtime; 291c631d03cSTakashi Iwai struct dummy_systimer_pcm *dpcm = runtime->private_data; 2921da177e4SLinus Torvalds 293b142037bSTakashi Iwai dpcm->frac_pos = 0; 294b142037bSTakashi Iwai dpcm->rate = runtime->rate; 295b142037bSTakashi Iwai dpcm->frac_buffer_size = runtime->buffer_size * HZ; 296b142037bSTakashi Iwai dpcm->frac_period_size = runtime->period_size * HZ; 297b5d10781STakashi Iwai dpcm->frac_period_rest = dpcm->frac_period_size; 298b5d10781STakashi Iwai dpcm->elapsed = 0; 29953463a83SAhmet İnan 3001da177e4SLinus Torvalds return 0; 3011da177e4SLinus Torvalds } 3021da177e4SLinus Torvalds 303c631d03cSTakashi Iwai static void dummy_systimer_callback(unsigned long data) 3041da177e4SLinus Torvalds { 305c631d03cSTakashi Iwai struct dummy_systimer_pcm *dpcm = (struct dummy_systimer_pcm *)data; 306b32425acSTakashi Iwai unsigned long flags; 307b5d10781STakashi Iwai int elapsed = 0; 3081da177e4SLinus Torvalds 309b32425acSTakashi Iwai spin_lock_irqsave(&dpcm->lock, flags); 310b142037bSTakashi Iwai dummy_systimer_update(dpcm); 311b142037bSTakashi Iwai dummy_systimer_rearm(dpcm); 312b5d10781STakashi Iwai elapsed = dpcm->elapsed; 313b5d10781STakashi Iwai dpcm->elapsed = 0; 314b32425acSTakashi Iwai spin_unlock_irqrestore(&dpcm->lock, flags); 315b5d10781STakashi Iwai if (elapsed) 3161da177e4SLinus Torvalds snd_pcm_period_elapsed(dpcm->substream); 3171da177e4SLinus Torvalds } 3181da177e4SLinus Torvalds 319c631d03cSTakashi Iwai static snd_pcm_uframes_t 320c631d03cSTakashi Iwai dummy_systimer_pointer(struct snd_pcm_substream *substream) 3211da177e4SLinus Torvalds { 322b142037bSTakashi Iwai struct dummy_systimer_pcm *dpcm = substream->runtime->private_data; 323b5d10781STakashi Iwai snd_pcm_uframes_t pos; 3241da177e4SLinus Torvalds 325b142037bSTakashi Iwai spin_lock(&dpcm->lock); 326b142037bSTakashi Iwai dummy_systimer_update(dpcm); 327b5d10781STakashi Iwai pos = dpcm->frac_pos / HZ; 328b142037bSTakashi Iwai spin_unlock(&dpcm->lock); 329b5d10781STakashi Iwai return pos; 3301da177e4SLinus Torvalds } 3311da177e4SLinus Torvalds 332c631d03cSTakashi Iwai static int dummy_systimer_create(struct snd_pcm_substream *substream) 3331da177e4SLinus Torvalds { 334c631d03cSTakashi Iwai struct dummy_systimer_pcm *dpcm; 3351da177e4SLinus Torvalds 336c631d03cSTakashi Iwai dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); 337c631d03cSTakashi Iwai if (!dpcm) 338c631d03cSTakashi Iwai return -ENOMEM; 339c631d03cSTakashi Iwai substream->runtime->private_data = dpcm; 340c631d03cSTakashi Iwai init_timer(&dpcm->timer); 341c631d03cSTakashi Iwai dpcm->timer.data = (unsigned long) dpcm; 342c631d03cSTakashi Iwai dpcm->timer.function = dummy_systimer_callback; 343c631d03cSTakashi Iwai spin_lock_init(&dpcm->lock); 344c631d03cSTakashi Iwai dpcm->substream = substream; 345c631d03cSTakashi Iwai return 0; 3461da177e4SLinus Torvalds } 3471da177e4SLinus Torvalds 348c631d03cSTakashi Iwai static void dummy_systimer_free(struct snd_pcm_substream *substream) 349c631d03cSTakashi Iwai { 350c631d03cSTakashi Iwai kfree(substream->runtime->private_data); 351c631d03cSTakashi Iwai } 352c631d03cSTakashi Iwai 353c631d03cSTakashi Iwai static struct dummy_timer_ops dummy_systimer_ops = { 354c631d03cSTakashi Iwai .create = dummy_systimer_create, 355c631d03cSTakashi Iwai .free = dummy_systimer_free, 356c631d03cSTakashi Iwai .prepare = dummy_systimer_prepare, 357c631d03cSTakashi Iwai .start = dummy_systimer_start, 358c631d03cSTakashi Iwai .stop = dummy_systimer_stop, 359c631d03cSTakashi Iwai .pointer = dummy_systimer_pointer, 360c631d03cSTakashi Iwai }; 361c631d03cSTakashi Iwai 362c631d03cSTakashi Iwai #ifdef CONFIG_HIGH_RES_TIMERS 363c631d03cSTakashi Iwai /* 364c631d03cSTakashi Iwai * hrtimer interface 365c631d03cSTakashi Iwai */ 366c631d03cSTakashi Iwai 367c631d03cSTakashi Iwai struct dummy_hrtimer_pcm { 368c631d03cSTakashi Iwai ktime_t base_time; 369c631d03cSTakashi Iwai ktime_t period_time; 370c631d03cSTakashi Iwai atomic_t running; 371c631d03cSTakashi Iwai struct hrtimer timer; 372c631d03cSTakashi Iwai struct tasklet_struct tasklet; 373c631d03cSTakashi Iwai struct snd_pcm_substream *substream; 374c631d03cSTakashi Iwai }; 375c631d03cSTakashi Iwai 376c631d03cSTakashi Iwai static void dummy_hrtimer_pcm_elapsed(unsigned long priv) 377c631d03cSTakashi Iwai { 378c631d03cSTakashi Iwai struct dummy_hrtimer_pcm *dpcm = (struct dummy_hrtimer_pcm *)priv; 379c631d03cSTakashi Iwai if (atomic_read(&dpcm->running)) 380c631d03cSTakashi Iwai snd_pcm_period_elapsed(dpcm->substream); 381c631d03cSTakashi Iwai } 382c631d03cSTakashi Iwai 383c631d03cSTakashi Iwai static enum hrtimer_restart dummy_hrtimer_callback(struct hrtimer *timer) 384c631d03cSTakashi Iwai { 385c631d03cSTakashi Iwai struct dummy_hrtimer_pcm *dpcm; 386c631d03cSTakashi Iwai 387c631d03cSTakashi Iwai dpcm = container_of(timer, struct dummy_hrtimer_pcm, timer); 388c631d03cSTakashi Iwai if (!atomic_read(&dpcm->running)) 389c631d03cSTakashi Iwai return HRTIMER_NORESTART; 390c631d03cSTakashi Iwai tasklet_schedule(&dpcm->tasklet); 391c631d03cSTakashi Iwai hrtimer_forward_now(timer, dpcm->period_time); 392c631d03cSTakashi Iwai return HRTIMER_RESTART; 393c631d03cSTakashi Iwai } 394c631d03cSTakashi Iwai 395c631d03cSTakashi Iwai static int dummy_hrtimer_start(struct snd_pcm_substream *substream) 396c631d03cSTakashi Iwai { 397c631d03cSTakashi Iwai struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; 398c631d03cSTakashi Iwai 399c631d03cSTakashi Iwai dpcm->base_time = hrtimer_cb_get_time(&dpcm->timer); 400c631d03cSTakashi Iwai hrtimer_start(&dpcm->timer, dpcm->period_time, HRTIMER_MODE_REL); 401c631d03cSTakashi Iwai atomic_set(&dpcm->running, 1); 402c631d03cSTakashi Iwai return 0; 403c631d03cSTakashi Iwai } 404c631d03cSTakashi Iwai 405c631d03cSTakashi Iwai static int dummy_hrtimer_stop(struct snd_pcm_substream *substream) 406c631d03cSTakashi Iwai { 407c631d03cSTakashi Iwai struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; 408c631d03cSTakashi Iwai 409c631d03cSTakashi Iwai atomic_set(&dpcm->running, 0); 410c631d03cSTakashi Iwai hrtimer_cancel(&dpcm->timer); 411c631d03cSTakashi Iwai return 0; 412c631d03cSTakashi Iwai } 413c631d03cSTakashi Iwai 414c631d03cSTakashi Iwai static inline void dummy_hrtimer_sync(struct dummy_hrtimer_pcm *dpcm) 415c631d03cSTakashi Iwai { 416c631d03cSTakashi Iwai tasklet_kill(&dpcm->tasklet); 417c631d03cSTakashi Iwai } 418c631d03cSTakashi Iwai 419c631d03cSTakashi Iwai static snd_pcm_uframes_t 420c631d03cSTakashi Iwai dummy_hrtimer_pointer(struct snd_pcm_substream *substream) 421c631d03cSTakashi Iwai { 422c631d03cSTakashi Iwai struct snd_pcm_runtime *runtime = substream->runtime; 423c631d03cSTakashi Iwai struct dummy_hrtimer_pcm *dpcm = runtime->private_data; 424c631d03cSTakashi Iwai u64 delta; 425c631d03cSTakashi Iwai u32 pos; 426c631d03cSTakashi Iwai 427c631d03cSTakashi Iwai delta = ktime_us_delta(hrtimer_cb_get_time(&dpcm->timer), 428c631d03cSTakashi Iwai dpcm->base_time); 429c631d03cSTakashi Iwai delta = div_u64(delta * runtime->rate + 999999, 1000000); 430c631d03cSTakashi Iwai div_u64_rem(delta, runtime->buffer_size, &pos); 431c631d03cSTakashi Iwai return pos; 432c631d03cSTakashi Iwai } 433c631d03cSTakashi Iwai 434c631d03cSTakashi Iwai static int dummy_hrtimer_prepare(struct snd_pcm_substream *substream) 435c631d03cSTakashi Iwai { 436c631d03cSTakashi Iwai struct snd_pcm_runtime *runtime = substream->runtime; 437c631d03cSTakashi Iwai struct dummy_hrtimer_pcm *dpcm = runtime->private_data; 438c631d03cSTakashi Iwai unsigned int period, rate; 439c631d03cSTakashi Iwai long sec; 440c631d03cSTakashi Iwai unsigned long nsecs; 441c631d03cSTakashi Iwai 442c631d03cSTakashi Iwai dummy_hrtimer_sync(dpcm); 443c631d03cSTakashi Iwai period = runtime->period_size; 444c631d03cSTakashi Iwai rate = runtime->rate; 445c631d03cSTakashi Iwai sec = period / rate; 446c631d03cSTakashi Iwai period %= rate; 447c631d03cSTakashi Iwai nsecs = div_u64((u64)period * 1000000000UL + rate - 1, rate); 448c631d03cSTakashi Iwai dpcm->period_time = ktime_set(sec, nsecs); 449c631d03cSTakashi Iwai 450c631d03cSTakashi Iwai return 0; 451c631d03cSTakashi Iwai } 452c631d03cSTakashi Iwai 453c631d03cSTakashi Iwai static int dummy_hrtimer_create(struct snd_pcm_substream *substream) 454c631d03cSTakashi Iwai { 455c631d03cSTakashi Iwai struct dummy_hrtimer_pcm *dpcm; 456c631d03cSTakashi Iwai 457c631d03cSTakashi Iwai dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); 458c631d03cSTakashi Iwai if (!dpcm) 459c631d03cSTakashi Iwai return -ENOMEM; 460c631d03cSTakashi Iwai substream->runtime->private_data = dpcm; 461c631d03cSTakashi Iwai hrtimer_init(&dpcm->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); 462c631d03cSTakashi Iwai dpcm->timer.function = dummy_hrtimer_callback; 463c631d03cSTakashi Iwai dpcm->substream = substream; 464c631d03cSTakashi Iwai atomic_set(&dpcm->running, 0); 465c631d03cSTakashi Iwai tasklet_init(&dpcm->tasklet, dummy_hrtimer_pcm_elapsed, 466c631d03cSTakashi Iwai (unsigned long)dpcm); 467c631d03cSTakashi Iwai return 0; 468c631d03cSTakashi Iwai } 469c631d03cSTakashi Iwai 470c631d03cSTakashi Iwai static void dummy_hrtimer_free(struct snd_pcm_substream *substream) 471c631d03cSTakashi Iwai { 472c631d03cSTakashi Iwai struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data; 473c631d03cSTakashi Iwai dummy_hrtimer_sync(dpcm); 474c631d03cSTakashi Iwai kfree(dpcm); 475c631d03cSTakashi Iwai } 476c631d03cSTakashi Iwai 477c631d03cSTakashi Iwai static struct dummy_timer_ops dummy_hrtimer_ops = { 478c631d03cSTakashi Iwai .create = dummy_hrtimer_create, 479c631d03cSTakashi Iwai .free = dummy_hrtimer_free, 480c631d03cSTakashi Iwai .prepare = dummy_hrtimer_prepare, 481c631d03cSTakashi Iwai .start = dummy_hrtimer_start, 482c631d03cSTakashi Iwai .stop = dummy_hrtimer_stop, 483c631d03cSTakashi Iwai .pointer = dummy_hrtimer_pointer, 484c631d03cSTakashi Iwai }; 485c631d03cSTakashi Iwai 486c631d03cSTakashi Iwai #endif /* CONFIG_HIGH_RES_TIMERS */ 487c631d03cSTakashi Iwai 488c631d03cSTakashi Iwai /* 489c631d03cSTakashi Iwai * PCM interface 490c631d03cSTakashi Iwai */ 491c631d03cSTakashi Iwai 492c631d03cSTakashi Iwai static int dummy_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 493c631d03cSTakashi Iwai { 494c631d03cSTakashi Iwai struct snd_dummy *dummy = snd_pcm_substream_chip(substream); 495c631d03cSTakashi Iwai 496c631d03cSTakashi Iwai switch (cmd) { 497c631d03cSTakashi Iwai case SNDRV_PCM_TRIGGER_START: 498c631d03cSTakashi Iwai case SNDRV_PCM_TRIGGER_RESUME: 499c631d03cSTakashi Iwai return dummy->timer_ops->start(substream); 500c631d03cSTakashi Iwai case SNDRV_PCM_TRIGGER_STOP: 501c631d03cSTakashi Iwai case SNDRV_PCM_TRIGGER_SUSPEND: 502c631d03cSTakashi Iwai return dummy->timer_ops->stop(substream); 503c631d03cSTakashi Iwai } 504c631d03cSTakashi Iwai return -EINVAL; 505c631d03cSTakashi Iwai } 506c631d03cSTakashi Iwai 507c631d03cSTakashi Iwai static int dummy_pcm_prepare(struct snd_pcm_substream *substream) 508c631d03cSTakashi Iwai { 509c631d03cSTakashi Iwai struct snd_dummy *dummy = snd_pcm_substream_chip(substream); 510c631d03cSTakashi Iwai 511c631d03cSTakashi Iwai return dummy->timer_ops->prepare(substream); 512c631d03cSTakashi Iwai } 513c631d03cSTakashi Iwai 514c631d03cSTakashi Iwai static snd_pcm_uframes_t dummy_pcm_pointer(struct snd_pcm_substream *substream) 515c631d03cSTakashi Iwai { 516c631d03cSTakashi Iwai struct snd_dummy *dummy = snd_pcm_substream_chip(substream); 517c631d03cSTakashi Iwai 518c631d03cSTakashi Iwai return dummy->timer_ops->pointer(substream); 519c631d03cSTakashi Iwai } 520c631d03cSTakashi Iwai 521c631d03cSTakashi Iwai static struct snd_pcm_hardware dummy_pcm_hardware = { 522c631d03cSTakashi Iwai .info = (SNDRV_PCM_INFO_MMAP | 523c631d03cSTakashi Iwai SNDRV_PCM_INFO_INTERLEAVED | 524c631d03cSTakashi Iwai SNDRV_PCM_INFO_RESUME | 525c631d03cSTakashi Iwai SNDRV_PCM_INFO_MMAP_VALID), 526c631d03cSTakashi Iwai .formats = USE_FORMATS, 527c631d03cSTakashi Iwai .rates = USE_RATE, 528c631d03cSTakashi Iwai .rate_min = USE_RATE_MIN, 529c631d03cSTakashi Iwai .rate_max = USE_RATE_MAX, 530c631d03cSTakashi Iwai .channels_min = USE_CHANNELS_MIN, 531c631d03cSTakashi Iwai .channels_max = USE_CHANNELS_MAX, 532c631d03cSTakashi Iwai .buffer_bytes_max = MAX_BUFFER_SIZE, 533d5e1ca05SJaroslav Kysela .period_bytes_min = MIN_PERIOD_SIZE, 534c631d03cSTakashi Iwai .period_bytes_max = MAX_PERIOD_SIZE, 535c631d03cSTakashi Iwai .periods_min = USE_PERIODS_MIN, 536c631d03cSTakashi Iwai .periods_max = USE_PERIODS_MAX, 537c631d03cSTakashi Iwai .fifo_size = 0, 538c631d03cSTakashi Iwai }; 539c631d03cSTakashi Iwai 540c631d03cSTakashi Iwai static int dummy_pcm_hw_params(struct snd_pcm_substream *substream, 5414a4d2cfdSTakashi Iwai struct snd_pcm_hw_params *hw_params) 5421da177e4SLinus Torvalds { 543a68c4d11STakashi Iwai if (fake_buffer) { 544a68c4d11STakashi Iwai /* runtime->dma_bytes has to be set manually to allow mmap */ 545a68c4d11STakashi Iwai substream->runtime->dma_bytes = params_buffer_bytes(hw_params); 546a68c4d11STakashi Iwai return 0; 547a68c4d11STakashi Iwai } 548c631d03cSTakashi Iwai return snd_pcm_lib_malloc_pages(substream, 549c631d03cSTakashi Iwai params_buffer_bytes(hw_params)); 5501da177e4SLinus Torvalds } 5511da177e4SLinus Torvalds 552c631d03cSTakashi Iwai static int dummy_pcm_hw_free(struct snd_pcm_substream *substream) 5531da177e4SLinus Torvalds { 554a68c4d11STakashi Iwai if (fake_buffer) 555a68c4d11STakashi Iwai return 0; 5561da177e4SLinus Torvalds return snd_pcm_lib_free_pages(substream); 5571da177e4SLinus Torvalds } 5581da177e4SLinus Torvalds 559c631d03cSTakashi Iwai static int dummy_pcm_open(struct snd_pcm_substream *substream) 560c8eb6ba1STakashi Iwai { 561c631d03cSTakashi Iwai struct snd_dummy *dummy = snd_pcm_substream_chip(substream); 562d5e1ca05SJaroslav Kysela struct dummy_model *model = dummy->model; 5634a4d2cfdSTakashi Iwai struct snd_pcm_runtime *runtime = substream->runtime; 5641da177e4SLinus Torvalds int err; 5651da177e4SLinus Torvalds 566c631d03cSTakashi Iwai dummy->timer_ops = &dummy_systimer_ops; 567c631d03cSTakashi Iwai #ifdef CONFIG_HIGH_RES_TIMERS 568c631d03cSTakashi Iwai if (hrtimer) 569c631d03cSTakashi Iwai dummy->timer_ops = &dummy_hrtimer_ops; 570c631d03cSTakashi Iwai #endif 571c631d03cSTakashi Iwai 572c631d03cSTakashi Iwai err = dummy->timer_ops->create(substream); 573c631d03cSTakashi Iwai if (err < 0) 574c631d03cSTakashi Iwai return err; 575c631d03cSTakashi Iwai 576d5e1ca05SJaroslav Kysela runtime->hw = dummy->pcm_hw; 5771da177e4SLinus Torvalds if (substream->pcm->device & 1) { 5781da177e4SLinus Torvalds runtime->hw.info &= ~SNDRV_PCM_INFO_INTERLEAVED; 5791da177e4SLinus Torvalds runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED; 5801da177e4SLinus Torvalds } 5811da177e4SLinus Torvalds if (substream->pcm->device & 2) 582c631d03cSTakashi Iwai runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP | 583c631d03cSTakashi Iwai SNDRV_PCM_INFO_MMAP_VALID); 584c631d03cSTakashi Iwai 585d5e1ca05SJaroslav Kysela if (model == NULL) 586d5e1ca05SJaroslav Kysela return 0; 587d5e1ca05SJaroslav Kysela 588d5e1ca05SJaroslav Kysela if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 589d5e1ca05SJaroslav Kysela if (model->playback_constraints) 590d5e1ca05SJaroslav Kysela err = model->playback_constraints(substream->runtime); 591d5e1ca05SJaroslav Kysela } else { 592d5e1ca05SJaroslav Kysela if (model->capture_constraints) 593d5e1ca05SJaroslav Kysela err = model->capture_constraints(substream->runtime); 594d5e1ca05SJaroslav Kysela } 595c631d03cSTakashi Iwai if (err < 0) { 596c631d03cSTakashi Iwai dummy->timer_ops->free(substream); 5971da177e4SLinus Torvalds return err; 598c631d03cSTakashi Iwai } 5991da177e4SLinus Torvalds return 0; 6001da177e4SLinus Torvalds } 6011da177e4SLinus Torvalds 602c631d03cSTakashi Iwai static int dummy_pcm_close(struct snd_pcm_substream *substream) 6031da177e4SLinus Torvalds { 604c631d03cSTakashi Iwai struct snd_dummy *dummy = snd_pcm_substream_chip(substream); 605c631d03cSTakashi Iwai dummy->timer_ops->free(substream); 6061da177e4SLinus Torvalds return 0; 6071da177e4SLinus Torvalds } 6081da177e4SLinus Torvalds 609a68c4d11STakashi Iwai /* 610a68c4d11STakashi Iwai * dummy buffer handling 611a68c4d11STakashi Iwai */ 612a68c4d11STakashi Iwai 613a68c4d11STakashi Iwai static void *dummy_page[2]; 614a68c4d11STakashi Iwai 615a68c4d11STakashi Iwai static void free_fake_buffer(void) 616a68c4d11STakashi Iwai { 617a68c4d11STakashi Iwai if (fake_buffer) { 618a68c4d11STakashi Iwai int i; 619a68c4d11STakashi Iwai for (i = 0; i < 2; i++) 620a68c4d11STakashi Iwai if (dummy_page[i]) { 621a68c4d11STakashi Iwai free_page((unsigned long)dummy_page[i]); 622a68c4d11STakashi Iwai dummy_page[i] = NULL; 623a68c4d11STakashi Iwai } 624a68c4d11STakashi Iwai } 625a68c4d11STakashi Iwai } 626a68c4d11STakashi Iwai 627a68c4d11STakashi Iwai static int alloc_fake_buffer(void) 628a68c4d11STakashi Iwai { 629a68c4d11STakashi Iwai int i; 630a68c4d11STakashi Iwai 631a68c4d11STakashi Iwai if (!fake_buffer) 632a68c4d11STakashi Iwai return 0; 633a68c4d11STakashi Iwai for (i = 0; i < 2; i++) { 634a68c4d11STakashi Iwai dummy_page[i] = (void *)get_zeroed_page(GFP_KERNEL); 635a68c4d11STakashi Iwai if (!dummy_page[i]) { 636a68c4d11STakashi Iwai free_fake_buffer(); 637a68c4d11STakashi Iwai return -ENOMEM; 638a68c4d11STakashi Iwai } 639a68c4d11STakashi Iwai } 640a68c4d11STakashi Iwai return 0; 641a68c4d11STakashi Iwai } 642a68c4d11STakashi Iwai 643a68c4d11STakashi Iwai static int dummy_pcm_copy(struct snd_pcm_substream *substream, 644a68c4d11STakashi Iwai int channel, snd_pcm_uframes_t pos, 645a68c4d11STakashi Iwai void __user *dst, snd_pcm_uframes_t count) 646a68c4d11STakashi Iwai { 647a68c4d11STakashi Iwai return 0; /* do nothing */ 648a68c4d11STakashi Iwai } 649a68c4d11STakashi Iwai 650a68c4d11STakashi Iwai static int dummy_pcm_silence(struct snd_pcm_substream *substream, 651a68c4d11STakashi Iwai int channel, snd_pcm_uframes_t pos, 652a68c4d11STakashi Iwai snd_pcm_uframes_t count) 653a68c4d11STakashi Iwai { 654a68c4d11STakashi Iwai return 0; /* do nothing */ 655a68c4d11STakashi Iwai } 656a68c4d11STakashi Iwai 657a68c4d11STakashi Iwai static struct page *dummy_pcm_page(struct snd_pcm_substream *substream, 658a68c4d11STakashi Iwai unsigned long offset) 659a68c4d11STakashi Iwai { 660a68c4d11STakashi Iwai return virt_to_page(dummy_page[substream->stream]); /* the same page */ 661a68c4d11STakashi Iwai } 662a68c4d11STakashi Iwai 663c631d03cSTakashi Iwai static struct snd_pcm_ops dummy_pcm_ops = { 664c631d03cSTakashi Iwai .open = dummy_pcm_open, 665c631d03cSTakashi Iwai .close = dummy_pcm_close, 6661da177e4SLinus Torvalds .ioctl = snd_pcm_lib_ioctl, 667c631d03cSTakashi Iwai .hw_params = dummy_pcm_hw_params, 668c631d03cSTakashi Iwai .hw_free = dummy_pcm_hw_free, 669c631d03cSTakashi Iwai .prepare = dummy_pcm_prepare, 670c631d03cSTakashi Iwai .trigger = dummy_pcm_trigger, 671c631d03cSTakashi Iwai .pointer = dummy_pcm_pointer, 6721da177e4SLinus Torvalds }; 6731da177e4SLinus Torvalds 674a68c4d11STakashi Iwai static struct snd_pcm_ops dummy_pcm_ops_no_buf = { 675a68c4d11STakashi Iwai .open = dummy_pcm_open, 676a68c4d11STakashi Iwai .close = dummy_pcm_close, 677a68c4d11STakashi Iwai .ioctl = snd_pcm_lib_ioctl, 678a68c4d11STakashi Iwai .hw_params = dummy_pcm_hw_params, 679a68c4d11STakashi Iwai .hw_free = dummy_pcm_hw_free, 680a68c4d11STakashi Iwai .prepare = dummy_pcm_prepare, 681a68c4d11STakashi Iwai .trigger = dummy_pcm_trigger, 682a68c4d11STakashi Iwai .pointer = dummy_pcm_pointer, 683a68c4d11STakashi Iwai .copy = dummy_pcm_copy, 684a68c4d11STakashi Iwai .silence = dummy_pcm_silence, 685a68c4d11STakashi Iwai .page = dummy_pcm_page, 686a68c4d11STakashi Iwai }; 687a68c4d11STakashi Iwai 688788c6043SPrarit Bhargava static int __devinit snd_card_dummy_pcm(struct snd_dummy *dummy, int device, 689788c6043SPrarit Bhargava int substreams) 6901da177e4SLinus Torvalds { 6914a4d2cfdSTakashi Iwai struct snd_pcm *pcm; 692a68c4d11STakashi Iwai struct snd_pcm_ops *ops; 6931da177e4SLinus Torvalds int err; 6941da177e4SLinus Torvalds 6951a11cb64SJaroslav Kysela err = snd_pcm_new(dummy->card, "Dummy PCM", device, 6961a11cb64SJaroslav Kysela substreams, substreams, &pcm); 6971a11cb64SJaroslav Kysela if (err < 0) 6981da177e4SLinus Torvalds return err; 6996e65c1ccSTakashi Iwai dummy->pcm = pcm; 700a68c4d11STakashi Iwai if (fake_buffer) 701a68c4d11STakashi Iwai ops = &dummy_pcm_ops_no_buf; 702a68c4d11STakashi Iwai else 703a68c4d11STakashi Iwai ops = &dummy_pcm_ops; 704a68c4d11STakashi Iwai snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, ops); 705a68c4d11STakashi Iwai snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, ops); 7061da177e4SLinus Torvalds pcm->private_data = dummy; 7071da177e4SLinus Torvalds pcm->info_flags = 0; 7081da177e4SLinus Torvalds strcpy(pcm->name, "Dummy PCM"); 709a68c4d11STakashi Iwai if (!fake_buffer) { 710a68c4d11STakashi Iwai snd_pcm_lib_preallocate_pages_for_all(pcm, 711a68c4d11STakashi Iwai SNDRV_DMA_TYPE_CONTINUOUS, 7121da177e4SLinus Torvalds snd_dma_continuous_data(GFP_KERNEL), 7131da177e4SLinus Torvalds 0, 64*1024); 714a68c4d11STakashi Iwai } 7151da177e4SLinus Torvalds return 0; 7161da177e4SLinus Torvalds } 7171da177e4SLinus Torvalds 7189b151fecSTakashi Iwai /* 7199b151fecSTakashi Iwai * mixer interface 7209b151fecSTakashi Iwai */ 7219b151fecSTakashi Iwai 7221da177e4SLinus Torvalds #define DUMMY_VOLUME(xname, xindex, addr) \ 723fb567a8eSTakashi Iwai { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ 724fb567a8eSTakashi Iwai .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \ 725fb567a8eSTakashi Iwai .name = xname, .index = xindex, \ 7261da177e4SLinus Torvalds .info = snd_dummy_volume_info, \ 7271da177e4SLinus Torvalds .get = snd_dummy_volume_get, .put = snd_dummy_volume_put, \ 728fb567a8eSTakashi Iwai .private_value = addr, \ 729fb567a8eSTakashi Iwai .tlv = { .p = db_scale_dummy } } 7301da177e4SLinus Torvalds 7314a4d2cfdSTakashi Iwai static int snd_dummy_volume_info(struct snd_kcontrol *kcontrol, 7324a4d2cfdSTakashi Iwai struct snd_ctl_elem_info *uinfo) 7331da177e4SLinus Torvalds { 7341da177e4SLinus Torvalds uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 7351da177e4SLinus Torvalds uinfo->count = 2; 7361da177e4SLinus Torvalds uinfo->value.integer.min = -50; 7371da177e4SLinus Torvalds uinfo->value.integer.max = 100; 7381da177e4SLinus Torvalds return 0; 7391da177e4SLinus Torvalds } 7401da177e4SLinus Torvalds 7414a4d2cfdSTakashi Iwai static int snd_dummy_volume_get(struct snd_kcontrol *kcontrol, 7424a4d2cfdSTakashi Iwai struct snd_ctl_elem_value *ucontrol) 7431da177e4SLinus Torvalds { 7444a4d2cfdSTakashi Iwai struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); 7451da177e4SLinus Torvalds int addr = kcontrol->private_value; 7461da177e4SLinus Torvalds 747c8eb6ba1STakashi Iwai spin_lock_irq(&dummy->mixer_lock); 7481da177e4SLinus Torvalds ucontrol->value.integer.value[0] = dummy->mixer_volume[addr][0]; 7491da177e4SLinus Torvalds ucontrol->value.integer.value[1] = dummy->mixer_volume[addr][1]; 750c8eb6ba1STakashi Iwai spin_unlock_irq(&dummy->mixer_lock); 7511da177e4SLinus Torvalds return 0; 7521da177e4SLinus Torvalds } 7531da177e4SLinus Torvalds 7544a4d2cfdSTakashi Iwai static int snd_dummy_volume_put(struct snd_kcontrol *kcontrol, 7554a4d2cfdSTakashi Iwai struct snd_ctl_elem_value *ucontrol) 7561da177e4SLinus Torvalds { 7574a4d2cfdSTakashi Iwai struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); 7581da177e4SLinus Torvalds int change, addr = kcontrol->private_value; 7591da177e4SLinus Torvalds int left, right; 7601da177e4SLinus Torvalds 7611da177e4SLinus Torvalds left = ucontrol->value.integer.value[0]; 7621da177e4SLinus Torvalds if (left < -50) 7631da177e4SLinus Torvalds left = -50; 7641da177e4SLinus Torvalds if (left > 100) 7651da177e4SLinus Torvalds left = 100; 7661da177e4SLinus Torvalds right = ucontrol->value.integer.value[1]; 7671da177e4SLinus Torvalds if (right < -50) 7681da177e4SLinus Torvalds right = -50; 7691da177e4SLinus Torvalds if (right > 100) 7701da177e4SLinus Torvalds right = 100; 771c8eb6ba1STakashi Iwai spin_lock_irq(&dummy->mixer_lock); 7721da177e4SLinus Torvalds change = dummy->mixer_volume[addr][0] != left || 7731da177e4SLinus Torvalds dummy->mixer_volume[addr][1] != right; 7741da177e4SLinus Torvalds dummy->mixer_volume[addr][0] = left; 7751da177e4SLinus Torvalds dummy->mixer_volume[addr][1] = right; 776c8eb6ba1STakashi Iwai spin_unlock_irq(&dummy->mixer_lock); 7771da177e4SLinus Torvalds return change; 7781da177e4SLinus Torvalds } 7791da177e4SLinus Torvalds 7800cb29ea0STakashi Iwai static const DECLARE_TLV_DB_SCALE(db_scale_dummy, -4500, 30, 0); 781fb567a8eSTakashi Iwai 7821da177e4SLinus Torvalds #define DUMMY_CAPSRC(xname, xindex, addr) \ 7831da177e4SLinus Torvalds { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ 7841da177e4SLinus Torvalds .info = snd_dummy_capsrc_info, \ 7851da177e4SLinus Torvalds .get = snd_dummy_capsrc_get, .put = snd_dummy_capsrc_put, \ 7861da177e4SLinus Torvalds .private_value = addr } 7871da177e4SLinus Torvalds 788a5ce8890STakashi Iwai #define snd_dummy_capsrc_info snd_ctl_boolean_stereo_info 7891da177e4SLinus Torvalds 7904a4d2cfdSTakashi Iwai static int snd_dummy_capsrc_get(struct snd_kcontrol *kcontrol, 7914a4d2cfdSTakashi Iwai struct snd_ctl_elem_value *ucontrol) 7921da177e4SLinus Torvalds { 7934a4d2cfdSTakashi Iwai struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); 7941da177e4SLinus Torvalds int addr = kcontrol->private_value; 7951da177e4SLinus Torvalds 796c8eb6ba1STakashi Iwai spin_lock_irq(&dummy->mixer_lock); 7971da177e4SLinus Torvalds ucontrol->value.integer.value[0] = dummy->capture_source[addr][0]; 7981da177e4SLinus Torvalds ucontrol->value.integer.value[1] = dummy->capture_source[addr][1]; 799c8eb6ba1STakashi Iwai spin_unlock_irq(&dummy->mixer_lock); 8001da177e4SLinus Torvalds return 0; 8011da177e4SLinus Torvalds } 8021da177e4SLinus Torvalds 8034a4d2cfdSTakashi Iwai static int snd_dummy_capsrc_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 8041da177e4SLinus Torvalds { 8054a4d2cfdSTakashi Iwai struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); 8061da177e4SLinus Torvalds int change, addr = kcontrol->private_value; 8071da177e4SLinus Torvalds int left, right; 8081da177e4SLinus Torvalds 8091da177e4SLinus Torvalds left = ucontrol->value.integer.value[0] & 1; 8101da177e4SLinus Torvalds right = ucontrol->value.integer.value[1] & 1; 811c8eb6ba1STakashi Iwai spin_lock_irq(&dummy->mixer_lock); 8121da177e4SLinus Torvalds change = dummy->capture_source[addr][0] != left && 8131da177e4SLinus Torvalds dummy->capture_source[addr][1] != right; 8141da177e4SLinus Torvalds dummy->capture_source[addr][0] = left; 8151da177e4SLinus Torvalds dummy->capture_source[addr][1] = right; 816c8eb6ba1STakashi Iwai spin_unlock_irq(&dummy->mixer_lock); 8171da177e4SLinus Torvalds return change; 8181da177e4SLinus Torvalds } 8191da177e4SLinus Torvalds 8204a4d2cfdSTakashi Iwai static struct snd_kcontrol_new snd_dummy_controls[] = { 8211da177e4SLinus Torvalds DUMMY_VOLUME("Master Volume", 0, MIXER_ADDR_MASTER), 8221da177e4SLinus Torvalds DUMMY_CAPSRC("Master Capture Switch", 0, MIXER_ADDR_MASTER), 8231da177e4SLinus Torvalds DUMMY_VOLUME("Synth Volume", 0, MIXER_ADDR_SYNTH), 824e05d6964STakashi Iwai DUMMY_CAPSRC("Synth Capture Switch", 0, MIXER_ADDR_SYNTH), 8251da177e4SLinus Torvalds DUMMY_VOLUME("Line Volume", 0, MIXER_ADDR_LINE), 826e05d6964STakashi Iwai DUMMY_CAPSRC("Line Capture Switch", 0, MIXER_ADDR_LINE), 8271da177e4SLinus Torvalds DUMMY_VOLUME("Mic Volume", 0, MIXER_ADDR_MIC), 828e05d6964STakashi Iwai DUMMY_CAPSRC("Mic Capture Switch", 0, MIXER_ADDR_MIC), 8291da177e4SLinus Torvalds DUMMY_VOLUME("CD Volume", 0, MIXER_ADDR_CD), 830e05d6964STakashi Iwai DUMMY_CAPSRC("CD Capture Switch", 0, MIXER_ADDR_CD) 8311da177e4SLinus Torvalds }; 8321da177e4SLinus Torvalds 833788c6043SPrarit Bhargava static int __devinit snd_card_dummy_new_mixer(struct snd_dummy *dummy) 8341da177e4SLinus Torvalds { 8354a4d2cfdSTakashi Iwai struct snd_card *card = dummy->card; 8361da177e4SLinus Torvalds unsigned int idx; 8371da177e4SLinus Torvalds int err; 8381da177e4SLinus Torvalds 8391da177e4SLinus Torvalds spin_lock_init(&dummy->mixer_lock); 8401da177e4SLinus Torvalds strcpy(card->mixername, "Dummy Mixer"); 8411da177e4SLinus Torvalds 8421da177e4SLinus Torvalds for (idx = 0; idx < ARRAY_SIZE(snd_dummy_controls); idx++) { 8431a11cb64SJaroslav Kysela err = snd_ctl_add(card, snd_ctl_new1(&snd_dummy_controls[idx], dummy)); 8441a11cb64SJaroslav Kysela if (err < 0) 8451da177e4SLinus Torvalds return err; 8461da177e4SLinus Torvalds } 8471da177e4SLinus Torvalds return 0; 8481da177e4SLinus Torvalds } 8491da177e4SLinus Torvalds 8509b151fecSTakashi Iwai #if defined(CONFIG_SND_DEBUG) && defined(CONFIG_PROC_FS) 8519b151fecSTakashi Iwai /* 8529b151fecSTakashi Iwai * proc interface 8539b151fecSTakashi Iwai */ 854d5e1ca05SJaroslav Kysela static void print_formats(struct snd_dummy *dummy, 855d5e1ca05SJaroslav Kysela struct snd_info_buffer *buffer) 8569b151fecSTakashi Iwai { 8579b151fecSTakashi Iwai int i; 8589b151fecSTakashi Iwai 8599b151fecSTakashi Iwai for (i = 0; i < SNDRV_PCM_FORMAT_LAST; i++) { 860d5e1ca05SJaroslav Kysela if (dummy->pcm_hw.formats & (1ULL << i)) 8619b151fecSTakashi Iwai snd_iprintf(buffer, " %s", snd_pcm_format_name(i)); 8629b151fecSTakashi Iwai } 8639b151fecSTakashi Iwai } 8649b151fecSTakashi Iwai 865d5e1ca05SJaroslav Kysela static void print_rates(struct snd_dummy *dummy, 866d5e1ca05SJaroslav Kysela struct snd_info_buffer *buffer) 8679b151fecSTakashi Iwai { 8689b151fecSTakashi Iwai static int rates[] = { 8699b151fecSTakashi Iwai 5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000, 8709b151fecSTakashi Iwai 64000, 88200, 96000, 176400, 192000, 8719b151fecSTakashi Iwai }; 8729b151fecSTakashi Iwai int i; 8739b151fecSTakashi Iwai 874d5e1ca05SJaroslav Kysela if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_CONTINUOUS) 8759b151fecSTakashi Iwai snd_iprintf(buffer, " continuous"); 876d5e1ca05SJaroslav Kysela if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_KNOT) 8779b151fecSTakashi Iwai snd_iprintf(buffer, " knot"); 8789b151fecSTakashi Iwai for (i = 0; i < ARRAY_SIZE(rates); i++) 879d5e1ca05SJaroslav Kysela if (dummy->pcm_hw.rates & (1 << i)) 8809b151fecSTakashi Iwai snd_iprintf(buffer, " %d", rates[i]); 8819b151fecSTakashi Iwai } 8829b151fecSTakashi Iwai 883d5e1ca05SJaroslav Kysela #define get_dummy_int_ptr(dummy, ofs) \ 884d5e1ca05SJaroslav Kysela (unsigned int *)((char *)&((dummy)->pcm_hw) + (ofs)) 885d5e1ca05SJaroslav Kysela #define get_dummy_ll_ptr(dummy, ofs) \ 886d5e1ca05SJaroslav Kysela (unsigned long long *)((char *)&((dummy)->pcm_hw) + (ofs)) 8879b151fecSTakashi Iwai 8889b151fecSTakashi Iwai struct dummy_hw_field { 8899b151fecSTakashi Iwai const char *name; 8909b151fecSTakashi Iwai const char *format; 8919b151fecSTakashi Iwai unsigned int offset; 8929b151fecSTakashi Iwai unsigned int size; 8939b151fecSTakashi Iwai }; 8949b151fecSTakashi Iwai #define FIELD_ENTRY(item, fmt) { \ 8959b151fecSTakashi Iwai .name = #item, \ 8969b151fecSTakashi Iwai .format = fmt, \ 8979b151fecSTakashi Iwai .offset = offsetof(struct snd_pcm_hardware, item), \ 8989b151fecSTakashi Iwai .size = sizeof(dummy_pcm_hardware.item) } 8999b151fecSTakashi Iwai 9009b151fecSTakashi Iwai static struct dummy_hw_field fields[] = { 9019b151fecSTakashi Iwai FIELD_ENTRY(formats, "%#llx"), 9029b151fecSTakashi Iwai FIELD_ENTRY(rates, "%#x"), 9039b151fecSTakashi Iwai FIELD_ENTRY(rate_min, "%d"), 9049b151fecSTakashi Iwai FIELD_ENTRY(rate_max, "%d"), 9059b151fecSTakashi Iwai FIELD_ENTRY(channels_min, "%d"), 9069b151fecSTakashi Iwai FIELD_ENTRY(channels_max, "%d"), 9079b151fecSTakashi Iwai FIELD_ENTRY(buffer_bytes_max, "%ld"), 9089b151fecSTakashi Iwai FIELD_ENTRY(period_bytes_min, "%ld"), 9099b151fecSTakashi Iwai FIELD_ENTRY(period_bytes_max, "%ld"), 9109b151fecSTakashi Iwai FIELD_ENTRY(periods_min, "%d"), 9119b151fecSTakashi Iwai FIELD_ENTRY(periods_max, "%d"), 9129b151fecSTakashi Iwai }; 9139b151fecSTakashi Iwai 9149b151fecSTakashi Iwai static void dummy_proc_read(struct snd_info_entry *entry, 9159b151fecSTakashi Iwai struct snd_info_buffer *buffer) 9169b151fecSTakashi Iwai { 917d5e1ca05SJaroslav Kysela struct snd_dummy *dummy = entry->private_data; 9189b151fecSTakashi Iwai int i; 9199b151fecSTakashi Iwai 9209b151fecSTakashi Iwai for (i = 0; i < ARRAY_SIZE(fields); i++) { 9219b151fecSTakashi Iwai snd_iprintf(buffer, "%s ", fields[i].name); 9229b151fecSTakashi Iwai if (fields[i].size == sizeof(int)) 9239b151fecSTakashi Iwai snd_iprintf(buffer, fields[i].format, 924d5e1ca05SJaroslav Kysela *get_dummy_int_ptr(dummy, fields[i].offset)); 9259b151fecSTakashi Iwai else 9269b151fecSTakashi Iwai snd_iprintf(buffer, fields[i].format, 927d5e1ca05SJaroslav Kysela *get_dummy_ll_ptr(dummy, fields[i].offset)); 9289b151fecSTakashi Iwai if (!strcmp(fields[i].name, "formats")) 929d5e1ca05SJaroslav Kysela print_formats(dummy, buffer); 9309b151fecSTakashi Iwai else if (!strcmp(fields[i].name, "rates")) 931d5e1ca05SJaroslav Kysela print_rates(dummy, buffer); 9329b151fecSTakashi Iwai snd_iprintf(buffer, "\n"); 9339b151fecSTakashi Iwai } 9349b151fecSTakashi Iwai } 9359b151fecSTakashi Iwai 9369b151fecSTakashi Iwai static void dummy_proc_write(struct snd_info_entry *entry, 9379b151fecSTakashi Iwai struct snd_info_buffer *buffer) 9389b151fecSTakashi Iwai { 939d5e1ca05SJaroslav Kysela struct snd_dummy *dummy = entry->private_data; 9409b151fecSTakashi Iwai char line[64]; 9419b151fecSTakashi Iwai 9429b151fecSTakashi Iwai while (!snd_info_get_line(buffer, line, sizeof(line))) { 9439b151fecSTakashi Iwai char item[20]; 9449b151fecSTakashi Iwai const char *ptr; 9459b151fecSTakashi Iwai unsigned long long val; 9469b151fecSTakashi Iwai int i; 9479b151fecSTakashi Iwai 9489b151fecSTakashi Iwai ptr = snd_info_get_str(item, line, sizeof(item)); 9499b151fecSTakashi Iwai for (i = 0; i < ARRAY_SIZE(fields); i++) { 9509b151fecSTakashi Iwai if (!strcmp(item, fields[i].name)) 9519b151fecSTakashi Iwai break; 9529b151fecSTakashi Iwai } 9539b151fecSTakashi Iwai if (i >= ARRAY_SIZE(fields)) 9549b151fecSTakashi Iwai continue; 9559b151fecSTakashi Iwai snd_info_get_str(item, ptr, sizeof(item)); 9569b151fecSTakashi Iwai if (strict_strtoull(item, 0, &val)) 9579b151fecSTakashi Iwai continue; 9589b151fecSTakashi Iwai if (fields[i].size == sizeof(int)) 959d5e1ca05SJaroslav Kysela *get_dummy_int_ptr(dummy, fields[i].offset) = val; 9609b151fecSTakashi Iwai else 961d5e1ca05SJaroslav Kysela *get_dummy_ll_ptr(dummy, fields[i].offset) = val; 9629b151fecSTakashi Iwai } 9639b151fecSTakashi Iwai } 9649b151fecSTakashi Iwai 9659b151fecSTakashi Iwai static void __devinit dummy_proc_init(struct snd_dummy *chip) 9669b151fecSTakashi Iwai { 9679b151fecSTakashi Iwai struct snd_info_entry *entry; 9689b151fecSTakashi Iwai 9699b151fecSTakashi Iwai if (!snd_card_proc_new(chip->card, "dummy_pcm", &entry)) { 9709b151fecSTakashi Iwai snd_info_set_text_ops(entry, chip, dummy_proc_read); 9719b151fecSTakashi Iwai entry->c.text.write = dummy_proc_write; 9729b151fecSTakashi Iwai entry->mode |= S_IWUSR; 973d5e1ca05SJaroslav Kysela entry->private_data = chip; 9749b151fecSTakashi Iwai } 9759b151fecSTakashi Iwai } 9769b151fecSTakashi Iwai #else 9779b151fecSTakashi Iwai #define dummy_proc_init(x) 9789b151fecSTakashi Iwai #endif /* CONFIG_SND_DEBUG && CONFIG_PROC_FS */ 9799b151fecSTakashi Iwai 980788c6043SPrarit Bhargava static int __devinit snd_dummy_probe(struct platform_device *devptr) 9811da177e4SLinus Torvalds { 9824a4d2cfdSTakashi Iwai struct snd_card *card; 9834a4d2cfdSTakashi Iwai struct snd_dummy *dummy; 984d5e1ca05SJaroslav Kysela struct dummy_model *m = NULL, **mdl; 9851da177e4SLinus Torvalds int idx, err; 9866e65c1ccSTakashi Iwai int dev = devptr->id; 9871da177e4SLinus Torvalds 988bd7dd77cSTakashi Iwai err = snd_card_create(index[dev], id[dev], THIS_MODULE, 989bd7dd77cSTakashi Iwai sizeof(struct snd_dummy), &card); 990bd7dd77cSTakashi Iwai if (err < 0) 991bd7dd77cSTakashi Iwai return err; 9924a4d2cfdSTakashi Iwai dummy = card->private_data; 9931da177e4SLinus Torvalds dummy->card = card; 994d5e1ca05SJaroslav Kysela for (mdl = dummy_models; *mdl && model[dev]; mdl++) { 995d5e1ca05SJaroslav Kysela if (strcmp(model[dev], (*mdl)->name) == 0) { 996d5e1ca05SJaroslav Kysela printk(KERN_INFO 997d5e1ca05SJaroslav Kysela "snd-dummy: Using model '%s' for card %i\n", 998d5e1ca05SJaroslav Kysela (*mdl)->name, card->number); 999d5e1ca05SJaroslav Kysela m = dummy->model = *mdl; 1000d5e1ca05SJaroslav Kysela break; 1001d5e1ca05SJaroslav Kysela } 1002d5e1ca05SJaroslav Kysela } 10031da177e4SLinus Torvalds for (idx = 0; idx < MAX_PCM_DEVICES && idx < pcm_devs[dev]; idx++) { 10041da177e4SLinus Torvalds if (pcm_substreams[dev] < 1) 10051da177e4SLinus Torvalds pcm_substreams[dev] = 1; 10061da177e4SLinus Torvalds if (pcm_substreams[dev] > MAX_PCM_SUBSTREAMS) 10071da177e4SLinus Torvalds pcm_substreams[dev] = MAX_PCM_SUBSTREAMS; 10081a11cb64SJaroslav Kysela err = snd_card_dummy_pcm(dummy, idx, pcm_substreams[dev]); 10091a11cb64SJaroslav Kysela if (err < 0) 10101da177e4SLinus Torvalds goto __nodev; 10111da177e4SLinus Torvalds } 1012d5e1ca05SJaroslav Kysela 1013d5e1ca05SJaroslav Kysela dummy->pcm_hw = dummy_pcm_hardware; 1014d5e1ca05SJaroslav Kysela if (m) { 1015d5e1ca05SJaroslav Kysela if (m->formats) 1016d5e1ca05SJaroslav Kysela dummy->pcm_hw.formats = m->formats; 1017d5e1ca05SJaroslav Kysela if (m->buffer_bytes_max) 1018d5e1ca05SJaroslav Kysela dummy->pcm_hw.buffer_bytes_max = m->buffer_bytes_max; 1019d5e1ca05SJaroslav Kysela if (m->period_bytes_min) 1020d5e1ca05SJaroslav Kysela dummy->pcm_hw.period_bytes_min = m->period_bytes_min; 1021d5e1ca05SJaroslav Kysela if (m->period_bytes_max) 1022d5e1ca05SJaroslav Kysela dummy->pcm_hw.period_bytes_max = m->period_bytes_max; 1023d5e1ca05SJaroslav Kysela if (m->periods_min) 1024d5e1ca05SJaroslav Kysela dummy->pcm_hw.periods_min = m->periods_min; 1025d5e1ca05SJaroslav Kysela if (m->periods_max) 1026d5e1ca05SJaroslav Kysela dummy->pcm_hw.periods_max = m->periods_max; 1027d5e1ca05SJaroslav Kysela if (m->rates) 1028d5e1ca05SJaroslav Kysela dummy->pcm_hw.rates = m->rates; 1029d5e1ca05SJaroslav Kysela if (m->rate_min) 1030d5e1ca05SJaroslav Kysela dummy->pcm_hw.rate_min = m->rate_min; 1031d5e1ca05SJaroslav Kysela if (m->rate_max) 1032d5e1ca05SJaroslav Kysela dummy->pcm_hw.rate_max = m->rate_max; 1033d5e1ca05SJaroslav Kysela if (m->channels_min) 1034d5e1ca05SJaroslav Kysela dummy->pcm_hw.channels_min = m->channels_min; 1035d5e1ca05SJaroslav Kysela if (m->channels_max) 1036d5e1ca05SJaroslav Kysela dummy->pcm_hw.channels_max = m->channels_max; 1037d5e1ca05SJaroslav Kysela } 1038d5e1ca05SJaroslav Kysela 10391a11cb64SJaroslav Kysela err = snd_card_dummy_new_mixer(dummy); 10401a11cb64SJaroslav Kysela if (err < 0) 10411da177e4SLinus Torvalds goto __nodev; 10421da177e4SLinus Torvalds strcpy(card->driver, "Dummy"); 10431da177e4SLinus Torvalds strcpy(card->shortname, "Dummy"); 10441da177e4SLinus Torvalds sprintf(card->longname, "Dummy %i", dev + 1); 104516dab54bSTakashi Iwai 10469b151fecSTakashi Iwai dummy_proc_init(dummy); 10479b151fecSTakashi Iwai 10486e65c1ccSTakashi Iwai snd_card_set_dev(card, &devptr->dev); 104916dab54bSTakashi Iwai 10501a11cb64SJaroslav Kysela err = snd_card_register(card); 10511a11cb64SJaroslav Kysela if (err == 0) { 10526e65c1ccSTakashi Iwai platform_set_drvdata(devptr, card); 10531da177e4SLinus Torvalds return 0; 10541da177e4SLinus Torvalds } 10551da177e4SLinus Torvalds __nodev: 10561da177e4SLinus Torvalds snd_card_free(card); 10571da177e4SLinus Torvalds return err; 10581da177e4SLinus Torvalds } 10591da177e4SLinus Torvalds 1060788c6043SPrarit Bhargava static int __devexit snd_dummy_remove(struct platform_device *devptr) 10616e65c1ccSTakashi Iwai { 10626e65c1ccSTakashi Iwai snd_card_free(platform_get_drvdata(devptr)); 10636e65c1ccSTakashi Iwai platform_set_drvdata(devptr, NULL); 10646e65c1ccSTakashi Iwai return 0; 10656e65c1ccSTakashi Iwai } 10666e65c1ccSTakashi Iwai 10676e65c1ccSTakashi Iwai #ifdef CONFIG_PM 10686e65c1ccSTakashi Iwai static int snd_dummy_suspend(struct platform_device *pdev, pm_message_t state) 10696e65c1ccSTakashi Iwai { 10706e65c1ccSTakashi Iwai struct snd_card *card = platform_get_drvdata(pdev); 10716e65c1ccSTakashi Iwai struct snd_dummy *dummy = card->private_data; 10726e65c1ccSTakashi Iwai 10736e65c1ccSTakashi Iwai snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 10746e65c1ccSTakashi Iwai snd_pcm_suspend_all(dummy->pcm); 10756e65c1ccSTakashi Iwai return 0; 10766e65c1ccSTakashi Iwai } 10776e65c1ccSTakashi Iwai 10786e65c1ccSTakashi Iwai static int snd_dummy_resume(struct platform_device *pdev) 10796e65c1ccSTakashi Iwai { 10806e65c1ccSTakashi Iwai struct snd_card *card = platform_get_drvdata(pdev); 10816e65c1ccSTakashi Iwai 10826e65c1ccSTakashi Iwai snd_power_change_state(card, SNDRV_CTL_POWER_D0); 10836e65c1ccSTakashi Iwai return 0; 10846e65c1ccSTakashi Iwai } 10856e65c1ccSTakashi Iwai #endif 10866e65c1ccSTakashi Iwai 10876e65c1ccSTakashi Iwai #define SND_DUMMY_DRIVER "snd_dummy" 10886e65c1ccSTakashi Iwai 10896e65c1ccSTakashi Iwai static struct platform_driver snd_dummy_driver = { 10906e65c1ccSTakashi Iwai .probe = snd_dummy_probe, 1091788c6043SPrarit Bhargava .remove = __devexit_p(snd_dummy_remove), 10926e65c1ccSTakashi Iwai #ifdef CONFIG_PM 10936e65c1ccSTakashi Iwai .suspend = snd_dummy_suspend, 10946e65c1ccSTakashi Iwai .resume = snd_dummy_resume, 10956e65c1ccSTakashi Iwai #endif 10966e65c1ccSTakashi Iwai .driver = { 10976e65c1ccSTakashi Iwai .name = SND_DUMMY_DRIVER 10986e65c1ccSTakashi Iwai }, 10996e65c1ccSTakashi Iwai }; 11006e65c1ccSTakashi Iwai 1101c12aad6eSRandy Dunlap static void snd_dummy_unregister_all(void) 1102f7a9275dSClemens Ladisch { 1103f7a9275dSClemens Ladisch int i; 1104f7a9275dSClemens Ladisch 1105f7a9275dSClemens Ladisch for (i = 0; i < ARRAY_SIZE(devices); ++i) 1106f7a9275dSClemens Ladisch platform_device_unregister(devices[i]); 1107f7a9275dSClemens Ladisch platform_driver_unregister(&snd_dummy_driver); 1108a68c4d11STakashi Iwai free_fake_buffer(); 1109f7a9275dSClemens Ladisch } 1110f7a9275dSClemens Ladisch 11111da177e4SLinus Torvalds static int __init alsa_card_dummy_init(void) 11121da177e4SLinus Torvalds { 11136e65c1ccSTakashi Iwai int i, cards, err; 11141da177e4SLinus Torvalds 11151a11cb64SJaroslav Kysela err = platform_driver_register(&snd_dummy_driver); 11161a11cb64SJaroslav Kysela if (err < 0) 11176e65c1ccSTakashi Iwai return err; 11186e65c1ccSTakashi Iwai 1119a68c4d11STakashi Iwai err = alloc_fake_buffer(); 1120a68c4d11STakashi Iwai if (err < 0) { 1121a68c4d11STakashi Iwai platform_driver_unregister(&snd_dummy_driver); 1122a68c4d11STakashi Iwai return err; 1123a68c4d11STakashi Iwai } 1124a68c4d11STakashi Iwai 11256e65c1ccSTakashi Iwai cards = 0; 11268278ca8fSTakashi Iwai for (i = 0; i < SNDRV_CARDS; i++) { 11276e65c1ccSTakashi Iwai struct platform_device *device; 11288278ca8fSTakashi Iwai if (! enable[i]) 11298278ca8fSTakashi Iwai continue; 11306e65c1ccSTakashi Iwai device = platform_device_register_simple(SND_DUMMY_DRIVER, 11316e65c1ccSTakashi Iwai i, NULL, 0); 1132a182ee98SRene Herman if (IS_ERR(device)) 1133a182ee98SRene Herman continue; 11347152447dSRene Herman if (!platform_get_drvdata(device)) { 11357152447dSRene Herman platform_device_unregister(device); 11367152447dSRene Herman continue; 11377152447dSRene Herman } 1138f7a9275dSClemens Ladisch devices[i] = device; 11391da177e4SLinus Torvalds cards++; 11401da177e4SLinus Torvalds } 11411da177e4SLinus Torvalds if (!cards) { 11421da177e4SLinus Torvalds #ifdef MODULE 11431da177e4SLinus Torvalds printk(KERN_ERR "Dummy soundcard not found or device busy\n"); 11441da177e4SLinus Torvalds #endif 1145a182ee98SRene Herman snd_dummy_unregister_all(); 1146a182ee98SRene Herman return -ENODEV; 11471da177e4SLinus Torvalds } 11481da177e4SLinus Torvalds return 0; 11491da177e4SLinus Torvalds } 11501da177e4SLinus Torvalds 11511da177e4SLinus Torvalds static void __exit alsa_card_dummy_exit(void) 11521da177e4SLinus Torvalds { 1153f7a9275dSClemens Ladisch snd_dummy_unregister_all(); 11541da177e4SLinus Torvalds } 11551da177e4SLinus Torvalds 11561da177e4SLinus Torvalds module_init(alsa_card_dummy_init) 11571da177e4SLinus Torvalds module_exit(alsa_card_dummy_exit) 1158