2005-04-17 06:20:36 +08:00
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/*
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* Dummy soundcard
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2007-10-15 15:50:19 +08:00
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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2005-04-17 06:20:36 +08:00
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/init.h>
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2005-11-17 23:01:56 +08:00
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#include <linux/err.h>
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#include <linux/platform_device.h>
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2005-04-17 06:20:36 +08:00
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#include <linux/jiffies.h>
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#include <linux/slab.h>
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#include <linux/time.h>
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#include <linux/wait.h>
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#include <linux/moduleparam.h>
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#include <sound/core.h>
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#include <sound/control.h>
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2006-08-23 19:07:19 +08:00
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#include <sound/tlv.h>
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2005-04-17 06:20:36 +08:00
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#include <sound/pcm.h>
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#include <sound/rawmidi.h>
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#include <sound/initval.h>
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2007-10-15 15:50:19 +08:00
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MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
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2005-04-17 06:20:36 +08:00
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MODULE_DESCRIPTION("Dummy soundcard (/dev/null)");
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MODULE_LICENSE("GPL");
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MODULE_SUPPORTED_DEVICE("{{ALSA,Dummy soundcard}}");
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#define MAX_PCM_DEVICES 4
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#define MAX_PCM_SUBSTREAMS 16
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#define MAX_MIDI_DEVICES 2
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#if 0 /* emu10k1 emulation */
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#define MAX_BUFFER_SIZE (128 * 1024)
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2005-11-17 21:27:28 +08:00
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static int emu10k1_playback_constraints(struct snd_pcm_runtime *runtime)
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2005-04-17 06:20:36 +08:00
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{
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int err;
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2008-08-15 18:59:02 +08:00
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err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
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if (err < 0)
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2005-04-17 06:20:36 +08:00
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return err;
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2008-08-15 18:59:02 +08:00
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err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 256, UINT_MAX);
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2008-10-19 16:34:22 +08:00
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if (err < 0)
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2005-04-17 06:20:36 +08:00
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return err;
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return 0;
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}
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#define add_playback_constraints emu10k1_playback_constraints
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#endif
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#if 0 /* RME9652 emulation */
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#define MAX_BUFFER_SIZE (26 * 64 * 1024)
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#define USE_FORMATS SNDRV_PCM_FMTBIT_S32_LE
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#define USE_CHANNELS_MIN 26
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#define USE_CHANNELS_MAX 26
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#define USE_PERIODS_MIN 2
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#define USE_PERIODS_MAX 2
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#endif
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#if 0 /* ICE1712 emulation */
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#define MAX_BUFFER_SIZE (256 * 1024)
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#define USE_FORMATS SNDRV_PCM_FMTBIT_S32_LE
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#define USE_CHANNELS_MIN 10
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#define USE_CHANNELS_MAX 10
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#define USE_PERIODS_MIN 1
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#define USE_PERIODS_MAX 1024
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#endif
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#if 0 /* UDA1341 emulation */
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#define MAX_BUFFER_SIZE (16380)
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#define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE
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#define USE_CHANNELS_MIN 2
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#define USE_CHANNELS_MAX 2
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#define USE_PERIODS_MIN 2
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#define USE_PERIODS_MAX 255
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#endif
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#if 0 /* simple AC97 bridge (intel8x0) with 48kHz AC97 only codec */
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#define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE
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#define USE_CHANNELS_MIN 2
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#define USE_CHANNELS_MAX 2
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#define USE_RATE SNDRV_PCM_RATE_48000
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#define USE_RATE_MIN 48000
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#define USE_RATE_MAX 48000
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#endif
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2006-01-03 21:27:21 +08:00
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#if 0 /* CA0106 */
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#define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE
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#define USE_CHANNELS_MIN 2
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#define USE_CHANNELS_MAX 2
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#define USE_RATE (SNDRV_PCM_RATE_48000|SNDRV_PCM_RATE_96000|SNDRV_PCM_RATE_192000)
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#define USE_RATE_MIN 48000
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#define USE_RATE_MAX 192000
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#define MAX_BUFFER_SIZE ((65536-64)*8)
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#define MAX_PERIOD_SIZE (65536-64)
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#define USE_PERIODS_MIN 2
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#define USE_PERIODS_MAX 8
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#endif
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2005-04-17 06:20:36 +08:00
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/* defaults */
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#ifndef MAX_BUFFER_SIZE
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#define MAX_BUFFER_SIZE (64*1024)
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#endif
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2006-01-03 21:27:21 +08:00
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#ifndef MAX_PERIOD_SIZE
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#define MAX_PERIOD_SIZE MAX_BUFFER_SIZE
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#endif
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2005-04-17 06:20:36 +08:00
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#ifndef USE_FORMATS
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#define USE_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE)
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#endif
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#ifndef USE_RATE
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#define USE_RATE SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000
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#define USE_RATE_MIN 5500
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#define USE_RATE_MAX 48000
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#endif
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#ifndef USE_CHANNELS_MIN
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#define USE_CHANNELS_MIN 1
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#endif
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#ifndef USE_CHANNELS_MAX
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#define USE_CHANNELS_MAX 2
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#endif
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#ifndef USE_PERIODS_MIN
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#define USE_PERIODS_MIN 1
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#endif
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#ifndef USE_PERIODS_MAX
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#define USE_PERIODS_MAX 1024
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#endif
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#ifndef add_playback_constraints
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#define add_playback_constraints(x) 0
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#endif
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#ifndef add_capture_constraints
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#define add_capture_constraints(x) 0
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#endif
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static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
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static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
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static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0};
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static int pcm_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
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static int pcm_substreams[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 8};
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//static int midi_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
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module_param_array(index, int, NULL, 0444);
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MODULE_PARM_DESC(index, "Index value for dummy soundcard.");
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module_param_array(id, charp, NULL, 0444);
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MODULE_PARM_DESC(id, "ID string for dummy soundcard.");
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module_param_array(enable, bool, NULL, 0444);
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MODULE_PARM_DESC(enable, "Enable this dummy soundcard.");
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module_param_array(pcm_devs, int, NULL, 0444);
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MODULE_PARM_DESC(pcm_devs, "PCM devices # (0-4) for dummy driver.");
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module_param_array(pcm_substreams, int, NULL, 0444);
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MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-16) for dummy driver.");
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//module_param_array(midi_devs, int, NULL, 0444);
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//MODULE_PARM_DESC(midi_devs, "MIDI devices # (0-2) for dummy driver.");
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2005-12-07 16:13:42 +08:00
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static struct platform_device *devices[SNDRV_CARDS];
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2005-04-17 06:20:36 +08:00
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#define MIXER_ADDR_MASTER 0
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#define MIXER_ADDR_LINE 1
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#define MIXER_ADDR_MIC 2
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#define MIXER_ADDR_SYNTH 3
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#define MIXER_ADDR_CD 4
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#define MIXER_ADDR_LAST 4
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2005-11-17 21:27:28 +08:00
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struct snd_dummy {
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struct snd_card *card;
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2005-11-17 23:01:56 +08:00
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struct snd_pcm *pcm;
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2005-04-17 06:20:36 +08:00
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spinlock_t mixer_lock;
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int mixer_volume[MIXER_ADDR_LAST+1][2];
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int capture_source[MIXER_ADDR_LAST+1][2];
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2005-11-17 21:27:28 +08:00
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};
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2005-04-17 06:20:36 +08:00
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2005-11-17 21:27:28 +08:00
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struct snd_dummy_pcm {
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struct snd_dummy *dummy;
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2005-04-17 06:20:36 +08:00
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spinlock_t lock;
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struct timer_list timer;
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2008-02-21 14:55:30 +08:00
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unsigned int pcm_buffer_size;
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unsigned int pcm_period_size;
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2005-04-17 06:20:36 +08:00
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unsigned int pcm_bps; /* bytes per second */
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2008-02-21 14:55:30 +08:00
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unsigned int pcm_hz; /* HZ */
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2005-04-17 06:20:36 +08:00
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unsigned int pcm_irq_pos; /* IRQ position */
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unsigned int pcm_buf_pos; /* position in buffer */
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2005-11-17 21:27:28 +08:00
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struct snd_pcm_substream *substream;
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};
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2005-04-17 06:20:36 +08:00
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2005-11-17 21:27:28 +08:00
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static inline void snd_card_dummy_pcm_timer_start(struct snd_dummy_pcm *dpcm)
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2005-04-17 06:20:36 +08:00
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{
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dpcm->timer.expires = 1 + jiffies;
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add_timer(&dpcm->timer);
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}
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2005-11-17 21:27:28 +08:00
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static inline void snd_card_dummy_pcm_timer_stop(struct snd_dummy_pcm *dpcm)
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2005-04-17 06:20:36 +08:00
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{
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del_timer(&dpcm->timer);
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}
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2005-11-17 21:27:28 +08:00
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static int snd_card_dummy_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
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2005-04-17 06:20:36 +08:00
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{
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2005-11-17 21:27:28 +08:00
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struct snd_pcm_runtime *runtime = substream->runtime;
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struct snd_dummy_pcm *dpcm = runtime->private_data;
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2005-11-17 17:20:23 +08:00
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int err = 0;
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2005-04-17 06:20:36 +08:00
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2005-11-17 17:20:23 +08:00
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spin_lock(&dpcm->lock);
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2005-11-17 23:01:56 +08:00
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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case SNDRV_PCM_TRIGGER_RESUME:
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2005-11-17 17:20:23 +08:00
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snd_card_dummy_pcm_timer_start(dpcm);
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2005-11-17 23:01:56 +08:00
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break;
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case SNDRV_PCM_TRIGGER_STOP:
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case SNDRV_PCM_TRIGGER_SUSPEND:
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2005-11-17 17:20:23 +08:00
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snd_card_dummy_pcm_timer_stop(dpcm);
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2005-11-17 23:01:56 +08:00
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break;
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default:
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2005-11-17 17:20:23 +08:00
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err = -EINVAL;
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2005-11-17 23:01:56 +08:00
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break;
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2005-04-17 06:20:36 +08:00
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}
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2005-11-17 17:20:23 +08:00
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spin_unlock(&dpcm->lock);
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2005-11-17 23:01:56 +08:00
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return 0;
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2005-04-17 06:20:36 +08:00
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}
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2005-11-17 21:27:28 +08:00
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static int snd_card_dummy_pcm_prepare(struct snd_pcm_substream *substream)
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2005-04-17 06:20:36 +08:00
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{
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2005-11-17 21:27:28 +08:00
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struct snd_pcm_runtime *runtime = substream->runtime;
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struct snd_dummy_pcm *dpcm = runtime->private_data;
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2008-04-17 01:30:30 +08:00
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int bps;
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bps = snd_pcm_format_width(runtime->format) * runtime->rate *
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runtime->channels / 8;
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2005-04-17 06:20:36 +08:00
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if (bps <= 0)
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return -EINVAL;
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2008-04-17 01:30:30 +08:00
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2005-04-17 06:20:36 +08:00
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dpcm->pcm_bps = bps;
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2008-02-21 14:55:30 +08:00
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dpcm->pcm_hz = HZ;
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dpcm->pcm_buffer_size = snd_pcm_lib_buffer_bytes(substream);
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dpcm->pcm_period_size = snd_pcm_lib_period_bytes(substream);
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2005-04-17 06:20:36 +08:00
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dpcm->pcm_irq_pos = 0;
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dpcm->pcm_buf_pos = 0;
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2008-02-21 14:55:30 +08:00
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snd_pcm_format_set_silence(runtime->format, runtime->dma_area,
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bytes_to_samples(runtime, runtime->dma_bytes));
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2005-04-17 06:20:36 +08:00
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return 0;
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}
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static void snd_card_dummy_pcm_timer_function(unsigned long data)
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{
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2005-11-17 21:27:28 +08:00
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struct snd_dummy_pcm *dpcm = (struct snd_dummy_pcm *)data;
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2005-11-19 01:52:14 +08:00
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unsigned long flags;
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2005-04-17 06:20:36 +08:00
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2005-11-19 01:52:14 +08:00
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spin_lock_irqsave(&dpcm->lock, flags);
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2005-04-17 06:20:36 +08:00
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dpcm->timer.expires = 1 + jiffies;
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add_timer(&dpcm->timer);
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2008-02-21 14:55:30 +08:00
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dpcm->pcm_irq_pos += dpcm->pcm_bps;
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2008-02-28 19:46:32 +08:00
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dpcm->pcm_buf_pos += dpcm->pcm_bps;
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dpcm->pcm_buf_pos %= dpcm->pcm_buffer_size * dpcm->pcm_hz;
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2008-02-21 14:55:30 +08:00
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if (dpcm->pcm_irq_pos >= dpcm->pcm_period_size * dpcm->pcm_hz) {
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dpcm->pcm_irq_pos %= dpcm->pcm_period_size * dpcm->pcm_hz;
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2005-11-19 01:52:14 +08:00
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spin_unlock_irqrestore(&dpcm->lock, flags);
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2005-04-17 06:20:36 +08:00
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snd_pcm_period_elapsed(dpcm->substream);
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2005-11-19 01:52:14 +08:00
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} else
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spin_unlock_irqrestore(&dpcm->lock, flags);
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2005-04-17 06:20:36 +08:00
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}
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2005-11-17 21:27:28 +08:00
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static snd_pcm_uframes_t snd_card_dummy_pcm_pointer(struct snd_pcm_substream *substream)
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2005-04-17 06:20:36 +08:00
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{
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2005-11-17 21:27:28 +08:00
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struct snd_pcm_runtime *runtime = substream->runtime;
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struct snd_dummy_pcm *dpcm = runtime->private_data;
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2005-04-17 06:20:36 +08:00
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2008-02-28 19:46:32 +08:00
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return bytes_to_frames(runtime, dpcm->pcm_buf_pos / dpcm->pcm_hz);
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2005-04-17 06:20:36 +08:00
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}
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2005-11-17 21:27:28 +08:00
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static struct snd_pcm_hardware snd_card_dummy_playback =
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2005-04-17 06:20:36 +08:00
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{
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.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
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2005-11-17 23:01:56 +08:00
|
|
|
SNDRV_PCM_INFO_RESUME | SNDRV_PCM_INFO_MMAP_VALID),
|
2005-04-17 06:20:36 +08:00
|
|
|
.formats = USE_FORMATS,
|
|
|
|
.rates = USE_RATE,
|
|
|
|
.rate_min = USE_RATE_MIN,
|
|
|
|
.rate_max = USE_RATE_MAX,
|
|
|
|
.channels_min = USE_CHANNELS_MIN,
|
|
|
|
.channels_max = USE_CHANNELS_MAX,
|
|
|
|
.buffer_bytes_max = MAX_BUFFER_SIZE,
|
|
|
|
.period_bytes_min = 64,
|
2006-08-17 23:12:19 +08:00
|
|
|
.period_bytes_max = MAX_PERIOD_SIZE,
|
2005-04-17 06:20:36 +08:00
|
|
|
.periods_min = USE_PERIODS_MIN,
|
|
|
|
.periods_max = USE_PERIODS_MAX,
|
|
|
|
.fifo_size = 0,
|
|
|
|
};
|
|
|
|
|
2005-11-17 21:27:28 +08:00
|
|
|
static struct snd_pcm_hardware snd_card_dummy_capture =
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
|
2005-11-17 23:01:56 +08:00
|
|
|
SNDRV_PCM_INFO_RESUME | SNDRV_PCM_INFO_MMAP_VALID),
|
2005-04-17 06:20:36 +08:00
|
|
|
.formats = USE_FORMATS,
|
|
|
|
.rates = USE_RATE,
|
|
|
|
.rate_min = USE_RATE_MIN,
|
|
|
|
.rate_max = USE_RATE_MAX,
|
|
|
|
.channels_min = USE_CHANNELS_MIN,
|
|
|
|
.channels_max = USE_CHANNELS_MAX,
|
|
|
|
.buffer_bytes_max = MAX_BUFFER_SIZE,
|
|
|
|
.period_bytes_min = 64,
|
2006-01-03 21:27:21 +08:00
|
|
|
.period_bytes_max = MAX_PERIOD_SIZE,
|
2005-04-17 06:20:36 +08:00
|
|
|
.periods_min = USE_PERIODS_MIN,
|
|
|
|
.periods_max = USE_PERIODS_MAX,
|
|
|
|
.fifo_size = 0,
|
|
|
|
};
|
|
|
|
|
2005-11-17 21:27:28 +08:00
|
|
|
static void snd_card_dummy_runtime_free(struct snd_pcm_runtime *runtime)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-11-17 17:20:23 +08:00
|
|
|
kfree(runtime->private_data);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2005-11-17 21:27:28 +08:00
|
|
|
static int snd_card_dummy_hw_params(struct snd_pcm_substream *substream,
|
|
|
|
struct snd_pcm_hw_params *hw_params)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
|
|
|
|
}
|
|
|
|
|
2005-11-17 21:27:28 +08:00
|
|
|
static int snd_card_dummy_hw_free(struct snd_pcm_substream *substream)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
return snd_pcm_lib_free_pages(substream);
|
|
|
|
}
|
|
|
|
|
2005-11-17 21:27:28 +08:00
|
|
|
static struct snd_dummy_pcm *new_pcm_stream(struct snd_pcm_substream *substream)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-11-17 21:27:28 +08:00
|
|
|
struct snd_dummy_pcm *dpcm;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
[ALSA] Replace with kzalloc() - others
Documentation,SA11xx UDA1341 driver,Generic drivers,MPU401 UART,OPL3
OPL4,Digigram VX core,I2C cs8427,I2C lib core,I2C tea6330t,L3 drivers
AK4114 receiver,AK4117 receiver,PDAudioCF driver,PPC PMAC driver
SPARC AMD7930 driver,SPARC cs4231 driver,Synth,Common EMU synth
USB generic driver,USB USX2Y
Replace kcalloc(1,..) with kzalloc().
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2005-09-09 20:22:34 +08:00
|
|
|
dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL);
|
2005-11-17 17:20:23 +08:00
|
|
|
if (! dpcm)
|
|
|
|
return dpcm;
|
2005-04-17 06:20:36 +08:00
|
|
|
init_timer(&dpcm->timer);
|
|
|
|
dpcm->timer.data = (unsigned long) dpcm;
|
|
|
|
dpcm->timer.function = snd_card_dummy_pcm_timer_function;
|
|
|
|
spin_lock_init(&dpcm->lock);
|
|
|
|
dpcm->substream = substream;
|
2005-11-17 17:20:23 +08:00
|
|
|
return dpcm;
|
|
|
|
}
|
|
|
|
|
2005-11-17 21:27:28 +08:00
|
|
|
static int snd_card_dummy_playback_open(struct snd_pcm_substream *substream)
|
2005-11-17 17:20:23 +08:00
|
|
|
{
|
2005-11-17 21:27:28 +08:00
|
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
|
|
struct snd_dummy_pcm *dpcm;
|
2005-11-17 17:20:23 +08:00
|
|
|
int err;
|
|
|
|
|
|
|
|
if ((dpcm = new_pcm_stream(substream)) == NULL)
|
|
|
|
return -ENOMEM;
|
2005-04-17 06:20:36 +08:00
|
|
|
runtime->private_data = dpcm;
|
2008-08-15 17:53:38 +08:00
|
|
|
/* makes the infrastructure responsible for freeing dpcm */
|
2005-04-17 06:20:36 +08:00
|
|
|
runtime->private_free = snd_card_dummy_runtime_free;
|
|
|
|
runtime->hw = snd_card_dummy_playback;
|
|
|
|
if (substream->pcm->device & 1) {
|
|
|
|
runtime->hw.info &= ~SNDRV_PCM_INFO_INTERLEAVED;
|
|
|
|
runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED;
|
|
|
|
}
|
|
|
|
if (substream->pcm->device & 2)
|
|
|
|
runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP|SNDRV_PCM_INFO_MMAP_VALID);
|
2008-08-15 18:59:02 +08:00
|
|
|
err = add_playback_constraints(runtime);
|
|
|
|
if (err < 0)
|
2005-04-17 06:20:36 +08:00
|
|
|
return err;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-11-17 21:27:28 +08:00
|
|
|
static int snd_card_dummy_capture_open(struct snd_pcm_substream *substream)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-11-17 21:27:28 +08:00
|
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
|
|
struct snd_dummy_pcm *dpcm;
|
2005-04-17 06:20:36 +08:00
|
|
|
int err;
|
|
|
|
|
2005-11-17 17:20:23 +08:00
|
|
|
if ((dpcm = new_pcm_stream(substream)) == NULL)
|
2005-04-17 06:20:36 +08:00
|
|
|
return -ENOMEM;
|
|
|
|
runtime->private_data = dpcm;
|
2008-08-15 17:53:38 +08:00
|
|
|
/* makes the infrastructure responsible for freeing dpcm */
|
2005-04-17 06:20:36 +08:00
|
|
|
runtime->private_free = snd_card_dummy_runtime_free;
|
|
|
|
runtime->hw = snd_card_dummy_capture;
|
|
|
|
if (substream->pcm->device == 1) {
|
|
|
|
runtime->hw.info &= ~SNDRV_PCM_INFO_INTERLEAVED;
|
|
|
|
runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED;
|
|
|
|
}
|
|
|
|
if (substream->pcm->device & 2)
|
|
|
|
runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP|SNDRV_PCM_INFO_MMAP_VALID);
|
2008-08-15 18:59:02 +08:00
|
|
|
err = add_capture_constraints(runtime);
|
|
|
|
if (err < 0)
|
2005-04-17 06:20:36 +08:00
|
|
|
return err;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-11-17 21:27:28 +08:00
|
|
|
static int snd_card_dummy_playback_close(struct snd_pcm_substream *substream)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-11-17 21:27:28 +08:00
|
|
|
static int snd_card_dummy_capture_close(struct snd_pcm_substream *substream)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-11-17 21:27:28 +08:00
|
|
|
static struct snd_pcm_ops snd_card_dummy_playback_ops = {
|
2005-04-17 06:20:36 +08:00
|
|
|
.open = snd_card_dummy_playback_open,
|
|
|
|
.close = snd_card_dummy_playback_close,
|
|
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
|
|
.hw_params = snd_card_dummy_hw_params,
|
|
|
|
.hw_free = snd_card_dummy_hw_free,
|
2005-11-17 17:20:23 +08:00
|
|
|
.prepare = snd_card_dummy_pcm_prepare,
|
|
|
|
.trigger = snd_card_dummy_pcm_trigger,
|
|
|
|
.pointer = snd_card_dummy_pcm_pointer,
|
2005-04-17 06:20:36 +08:00
|
|
|
};
|
|
|
|
|
2005-11-17 21:27:28 +08:00
|
|
|
static struct snd_pcm_ops snd_card_dummy_capture_ops = {
|
2005-04-17 06:20:36 +08:00
|
|
|
.open = snd_card_dummy_capture_open,
|
|
|
|
.close = snd_card_dummy_capture_close,
|
|
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
|
|
.hw_params = snd_card_dummy_hw_params,
|
|
|
|
.hw_free = snd_card_dummy_hw_free,
|
2005-11-17 17:20:23 +08:00
|
|
|
.prepare = snd_card_dummy_pcm_prepare,
|
|
|
|
.trigger = snd_card_dummy_pcm_trigger,
|
|
|
|
.pointer = snd_card_dummy_pcm_pointer,
|
2005-04-17 06:20:36 +08:00
|
|
|
};
|
|
|
|
|
2007-02-13 20:11:11 +08:00
|
|
|
static int __devinit snd_card_dummy_pcm(struct snd_dummy *dummy, int device,
|
|
|
|
int substreams)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-11-17 21:27:28 +08:00
|
|
|
struct snd_pcm *pcm;
|
2005-04-17 06:20:36 +08:00
|
|
|
int err;
|
|
|
|
|
2008-08-15 18:59:02 +08:00
|
|
|
err = snd_pcm_new(dummy->card, "Dummy PCM", device,
|
|
|
|
substreams, substreams, &pcm);
|
|
|
|
if (err < 0)
|
2005-04-17 06:20:36 +08:00
|
|
|
return err;
|
2005-11-17 23:01:56 +08:00
|
|
|
dummy->pcm = pcm;
|
2005-04-17 06:20:36 +08:00
|
|
|
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_card_dummy_playback_ops);
|
|
|
|
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_dummy_capture_ops);
|
|
|
|
pcm->private_data = dummy;
|
|
|
|
pcm->info_flags = 0;
|
|
|
|
strcpy(pcm->name, "Dummy PCM");
|
|
|
|
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
|
|
|
|
snd_dma_continuous_data(GFP_KERNEL),
|
|
|
|
0, 64*1024);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#define DUMMY_VOLUME(xname, xindex, addr) \
|
2006-08-23 19:07:19 +08:00
|
|
|
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
|
|
|
|
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
|
|
|
|
.name = xname, .index = xindex, \
|
2005-04-17 06:20:36 +08:00
|
|
|
.info = snd_dummy_volume_info, \
|
|
|
|
.get = snd_dummy_volume_get, .put = snd_dummy_volume_put, \
|
2006-08-23 19:07:19 +08:00
|
|
|
.private_value = addr, \
|
|
|
|
.tlv = { .p = db_scale_dummy } }
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-11-17 21:27:28 +08:00
|
|
|
static int snd_dummy_volume_info(struct snd_kcontrol *kcontrol,
|
|
|
|
struct snd_ctl_elem_info *uinfo)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
|
|
|
uinfo->count = 2;
|
|
|
|
uinfo->value.integer.min = -50;
|
|
|
|
uinfo->value.integer.max = 100;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-11-17 21:27:28 +08:00
|
|
|
static int snd_dummy_volume_get(struct snd_kcontrol *kcontrol,
|
|
|
|
struct snd_ctl_elem_value *ucontrol)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-11-17 21:27:28 +08:00
|
|
|
struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);
|
2005-04-17 06:20:36 +08:00
|
|
|
int addr = kcontrol->private_value;
|
|
|
|
|
2005-11-17 17:20:23 +08:00
|
|
|
spin_lock_irq(&dummy->mixer_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
ucontrol->value.integer.value[0] = dummy->mixer_volume[addr][0];
|
|
|
|
ucontrol->value.integer.value[1] = dummy->mixer_volume[addr][1];
|
2005-11-17 17:20:23 +08:00
|
|
|
spin_unlock_irq(&dummy->mixer_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-11-17 21:27:28 +08:00
|
|
|
static int snd_dummy_volume_put(struct snd_kcontrol *kcontrol,
|
|
|
|
struct snd_ctl_elem_value *ucontrol)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-11-17 21:27:28 +08:00
|
|
|
struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);
|
2005-04-17 06:20:36 +08:00
|
|
|
int change, addr = kcontrol->private_value;
|
|
|
|
int left, right;
|
|
|
|
|
|
|
|
left = ucontrol->value.integer.value[0];
|
|
|
|
if (left < -50)
|
|
|
|
left = -50;
|
|
|
|
if (left > 100)
|
|
|
|
left = 100;
|
|
|
|
right = ucontrol->value.integer.value[1];
|
|
|
|
if (right < -50)
|
|
|
|
right = -50;
|
|
|
|
if (right > 100)
|
|
|
|
right = 100;
|
2005-11-17 17:20:23 +08:00
|
|
|
spin_lock_irq(&dummy->mixer_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
change = dummy->mixer_volume[addr][0] != left ||
|
|
|
|
dummy->mixer_volume[addr][1] != right;
|
|
|
|
dummy->mixer_volume[addr][0] = left;
|
|
|
|
dummy->mixer_volume[addr][1] = right;
|
2005-11-17 17:20:23 +08:00
|
|
|
spin_unlock_irq(&dummy->mixer_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
return change;
|
|
|
|
}
|
|
|
|
|
2007-01-29 22:33:49 +08:00
|
|
|
static const DECLARE_TLV_DB_SCALE(db_scale_dummy, -4500, 30, 0);
|
2006-08-23 19:07:19 +08:00
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
#define DUMMY_CAPSRC(xname, xindex, addr) \
|
|
|
|
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
|
|
|
|
.info = snd_dummy_capsrc_info, \
|
|
|
|
.get = snd_dummy_capsrc_get, .put = snd_dummy_capsrc_put, \
|
|
|
|
.private_value = addr }
|
|
|
|
|
2007-07-23 21:42:26 +08:00
|
|
|
#define snd_dummy_capsrc_info snd_ctl_boolean_stereo_info
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-11-17 21:27:28 +08:00
|
|
|
static int snd_dummy_capsrc_get(struct snd_kcontrol *kcontrol,
|
|
|
|
struct snd_ctl_elem_value *ucontrol)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-11-17 21:27:28 +08:00
|
|
|
struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);
|
2005-04-17 06:20:36 +08:00
|
|
|
int addr = kcontrol->private_value;
|
|
|
|
|
2005-11-17 17:20:23 +08:00
|
|
|
spin_lock_irq(&dummy->mixer_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
ucontrol->value.integer.value[0] = dummy->capture_source[addr][0];
|
|
|
|
ucontrol->value.integer.value[1] = dummy->capture_source[addr][1];
|
2005-11-17 17:20:23 +08:00
|
|
|
spin_unlock_irq(&dummy->mixer_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-11-17 21:27:28 +08:00
|
|
|
static int snd_dummy_capsrc_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-11-17 21:27:28 +08:00
|
|
|
struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);
|
2005-04-17 06:20:36 +08:00
|
|
|
int change, addr = kcontrol->private_value;
|
|
|
|
int left, right;
|
|
|
|
|
|
|
|
left = ucontrol->value.integer.value[0] & 1;
|
|
|
|
right = ucontrol->value.integer.value[1] & 1;
|
2005-11-17 17:20:23 +08:00
|
|
|
spin_lock_irq(&dummy->mixer_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
change = dummy->capture_source[addr][0] != left &&
|
|
|
|
dummy->capture_source[addr][1] != right;
|
|
|
|
dummy->capture_source[addr][0] = left;
|
|
|
|
dummy->capture_source[addr][1] = right;
|
2005-11-17 17:20:23 +08:00
|
|
|
spin_unlock_irq(&dummy->mixer_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
return change;
|
|
|
|
}
|
|
|
|
|
2005-11-17 21:27:28 +08:00
|
|
|
static struct snd_kcontrol_new snd_dummy_controls[] = {
|
2005-04-17 06:20:36 +08:00
|
|
|
DUMMY_VOLUME("Master Volume", 0, MIXER_ADDR_MASTER),
|
|
|
|
DUMMY_CAPSRC("Master Capture Switch", 0, MIXER_ADDR_MASTER),
|
|
|
|
DUMMY_VOLUME("Synth Volume", 0, MIXER_ADDR_SYNTH),
|
2006-08-17 23:12:19 +08:00
|
|
|
DUMMY_CAPSRC("Synth Capture Switch", 0, MIXER_ADDR_SYNTH),
|
2005-04-17 06:20:36 +08:00
|
|
|
DUMMY_VOLUME("Line Volume", 0, MIXER_ADDR_LINE),
|
2006-08-17 23:12:19 +08:00
|
|
|
DUMMY_CAPSRC("Line Capture Switch", 0, MIXER_ADDR_LINE),
|
2005-04-17 06:20:36 +08:00
|
|
|
DUMMY_VOLUME("Mic Volume", 0, MIXER_ADDR_MIC),
|
2006-08-17 23:12:19 +08:00
|
|
|
DUMMY_CAPSRC("Mic Capture Switch", 0, MIXER_ADDR_MIC),
|
2005-04-17 06:20:36 +08:00
|
|
|
DUMMY_VOLUME("CD Volume", 0, MIXER_ADDR_CD),
|
2006-08-17 23:12:19 +08:00
|
|
|
DUMMY_CAPSRC("CD Capture Switch", 0, MIXER_ADDR_CD)
|
2005-04-17 06:20:36 +08:00
|
|
|
};
|
|
|
|
|
2007-02-13 20:11:11 +08:00
|
|
|
static int __devinit snd_card_dummy_new_mixer(struct snd_dummy *dummy)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-11-17 21:27:28 +08:00
|
|
|
struct snd_card *card = dummy->card;
|
2005-04-17 06:20:36 +08:00
|
|
|
unsigned int idx;
|
|
|
|
int err;
|
|
|
|
|
2008-08-08 23:12:47 +08:00
|
|
|
if (snd_BUG_ON(!dummy))
|
|
|
|
return -EINVAL;
|
2005-04-17 06:20:36 +08:00
|
|
|
spin_lock_init(&dummy->mixer_lock);
|
|
|
|
strcpy(card->mixername, "Dummy Mixer");
|
|
|
|
|
|
|
|
for (idx = 0; idx < ARRAY_SIZE(snd_dummy_controls); idx++) {
|
2008-08-15 18:59:02 +08:00
|
|
|
err = snd_ctl_add(card, snd_ctl_new1(&snd_dummy_controls[idx], dummy));
|
|
|
|
if (err < 0)
|
2005-04-17 06:20:36 +08:00
|
|
|
return err;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-02-13 20:11:11 +08:00
|
|
|
static int __devinit snd_dummy_probe(struct platform_device *devptr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-11-17 21:27:28 +08:00
|
|
|
struct snd_card *card;
|
|
|
|
struct snd_dummy *dummy;
|
2005-04-17 06:20:36 +08:00
|
|
|
int idx, err;
|
2005-11-17 23:01:56 +08:00
|
|
|
int dev = devptr->id;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2008-12-28 23:45:02 +08:00
|
|
|
err = snd_card_create(index[dev], id[dev], THIS_MODULE,
|
|
|
|
sizeof(struct snd_dummy), &card);
|
|
|
|
if (err < 0)
|
|
|
|
return err;
|
2005-11-17 21:27:28 +08:00
|
|
|
dummy = card->private_data;
|
2005-04-17 06:20:36 +08:00
|
|
|
dummy->card = card;
|
|
|
|
for (idx = 0; idx < MAX_PCM_DEVICES && idx < pcm_devs[dev]; idx++) {
|
|
|
|
if (pcm_substreams[dev] < 1)
|
|
|
|
pcm_substreams[dev] = 1;
|
|
|
|
if (pcm_substreams[dev] > MAX_PCM_SUBSTREAMS)
|
|
|
|
pcm_substreams[dev] = MAX_PCM_SUBSTREAMS;
|
2008-08-15 18:59:02 +08:00
|
|
|
err = snd_card_dummy_pcm(dummy, idx, pcm_substreams[dev]);
|
|
|
|
if (err < 0)
|
2005-04-17 06:20:36 +08:00
|
|
|
goto __nodev;
|
|
|
|
}
|
2008-08-15 18:59:02 +08:00
|
|
|
err = snd_card_dummy_new_mixer(dummy);
|
|
|
|
if (err < 0)
|
2005-04-17 06:20:36 +08:00
|
|
|
goto __nodev;
|
|
|
|
strcpy(card->driver, "Dummy");
|
|
|
|
strcpy(card->shortname, "Dummy");
|
|
|
|
sprintf(card->longname, "Dummy %i", dev + 1);
|
2005-09-05 23:17:58 +08:00
|
|
|
|
2005-11-17 23:01:56 +08:00
|
|
|
snd_card_set_dev(card, &devptr->dev);
|
2005-09-05 23:17:58 +08:00
|
|
|
|
2008-08-15 18:59:02 +08:00
|
|
|
err = snd_card_register(card);
|
|
|
|
if (err == 0) {
|
2005-11-17 23:01:56 +08:00
|
|
|
platform_set_drvdata(devptr, card);
|
2005-04-17 06:20:36 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
__nodev:
|
|
|
|
snd_card_free(card);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2007-02-13 20:11:11 +08:00
|
|
|
static int __devexit snd_dummy_remove(struct platform_device *devptr)
|
2005-11-17 23:01:56 +08:00
|
|
|
{
|
|
|
|
snd_card_free(platform_get_drvdata(devptr));
|
|
|
|
platform_set_drvdata(devptr, NULL);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
static int snd_dummy_suspend(struct platform_device *pdev, pm_message_t state)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-11-17 23:01:56 +08:00
|
|
|
struct snd_card *card = platform_get_drvdata(pdev);
|
|
|
|
struct snd_dummy *dummy = card->private_data;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-11-17 23:01:56 +08:00
|
|
|
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
|
|
|
|
snd_pcm_suspend_all(dummy->pcm);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int snd_dummy_resume(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
struct snd_card *card = platform_get_drvdata(pdev);
|
|
|
|
|
|
|
|
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#define SND_DUMMY_DRIVER "snd_dummy"
|
|
|
|
|
|
|
|
static struct platform_driver snd_dummy_driver = {
|
|
|
|
.probe = snd_dummy_probe,
|
2007-02-13 20:11:11 +08:00
|
|
|
.remove = __devexit_p(snd_dummy_remove),
|
2005-11-17 23:01:56 +08:00
|
|
|
#ifdef CONFIG_PM
|
|
|
|
.suspend = snd_dummy_suspend,
|
|
|
|
.resume = snd_dummy_resume,
|
2005-04-17 06:20:36 +08:00
|
|
|
#endif
|
2005-11-17 23:01:56 +08:00
|
|
|
.driver = {
|
|
|
|
.name = SND_DUMMY_DRIVER
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
2007-06-25 18:08:01 +08:00
|
|
|
static void snd_dummy_unregister_all(void)
|
2005-12-07 16:13:42 +08:00
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < ARRAY_SIZE(devices); ++i)
|
|
|
|
platform_device_unregister(devices[i]);
|
|
|
|
platform_driver_unregister(&snd_dummy_driver);
|
|
|
|
}
|
|
|
|
|
2005-11-17 23:01:56 +08:00
|
|
|
static int __init alsa_card_dummy_init(void)
|
|
|
|
{
|
|
|
|
int i, cards, err;
|
|
|
|
|
2008-08-15 18:59:02 +08:00
|
|
|
err = platform_driver_register(&snd_dummy_driver);
|
|
|
|
if (err < 0)
|
2005-11-17 23:01:56 +08:00
|
|
|
return err;
|
|
|
|
|
|
|
|
cards = 0;
|
2006-02-20 18:57:34 +08:00
|
|
|
for (i = 0; i < SNDRV_CARDS; i++) {
|
2005-11-17 23:01:56 +08:00
|
|
|
struct platform_device *device;
|
2006-02-20 18:57:34 +08:00
|
|
|
if (! enable[i])
|
|
|
|
continue;
|
2005-11-17 23:01:56 +08:00
|
|
|
device = platform_device_register_simple(SND_DUMMY_DRIVER,
|
|
|
|
i, NULL, 0);
|
2006-04-13 18:57:11 +08:00
|
|
|
if (IS_ERR(device))
|
|
|
|
continue;
|
2006-04-13 18:58:06 +08:00
|
|
|
if (!platform_get_drvdata(device)) {
|
|
|
|
platform_device_unregister(device);
|
|
|
|
continue;
|
|
|
|
}
|
2005-12-07 16:13:42 +08:00
|
|
|
devices[i] = device;
|
2005-04-17 06:20:36 +08:00
|
|
|
cards++;
|
|
|
|
}
|
|
|
|
if (!cards) {
|
|
|
|
#ifdef MODULE
|
|
|
|
printk(KERN_ERR "Dummy soundcard not found or device busy\n");
|
|
|
|
#endif
|
2006-04-13 18:57:11 +08:00
|
|
|
snd_dummy_unregister_all();
|
|
|
|
return -ENODEV;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit alsa_card_dummy_exit(void)
|
|
|
|
{
|
2005-12-07 16:13:42 +08:00
|
|
|
snd_dummy_unregister_all();
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
module_init(alsa_card_dummy_init)
|
|
|
|
module_exit(alsa_card_dummy_exit)
|