/*
* Dummy soundcard
- * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/control.h>
+#include <sound/tlv.h>
#include <sound/pcm.h>
#include <sound/rawmidi.h>
#include <sound/initval.h>
-MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
+MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
MODULE_DESCRIPTION("Dummy soundcard (/dev/null)");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{ALSA,Dummy soundcard}}");
#define USE_RATE_MAX 48000
#endif
+#if 0 /* CA0106 */
+#define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE
+#define USE_CHANNELS_MIN 2
+#define USE_CHANNELS_MAX 2
+#define USE_RATE (SNDRV_PCM_RATE_48000|SNDRV_PCM_RATE_96000|SNDRV_PCM_RATE_192000)
+#define USE_RATE_MIN 48000
+#define USE_RATE_MAX 192000
+#define MAX_BUFFER_SIZE ((65536-64)*8)
+#define MAX_PERIOD_SIZE (65536-64)
+#define USE_PERIODS_MIN 2
+#define USE_PERIODS_MAX 8
+#endif
+
/* defaults */
#ifndef MAX_BUFFER_SIZE
#define MAX_BUFFER_SIZE (64*1024)
#endif
+#ifndef MAX_PERIOD_SIZE
+#define MAX_PERIOD_SIZE MAX_BUFFER_SIZE
+#endif
#ifndef USE_FORMATS
#define USE_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE)
#endif
//module_param_array(midi_devs, int, NULL, 0444);
//MODULE_PARM_DESC(midi_devs, "MIDI devices # (0-2) for dummy driver.");
+static struct platform_device *devices[SNDRV_CARDS];
+
#define MIXER_ADDR_MASTER 0
#define MIXER_ADDR_LINE 1
#define MIXER_ADDR_MIC 2
static void snd_card_dummy_pcm_timer_function(unsigned long data)
{
struct snd_dummy_pcm *dpcm = (struct snd_dummy_pcm *)data;
+ unsigned long flags;
- spin_lock(&dpcm->lock);
+ spin_lock_irqsave(&dpcm->lock, flags);
dpcm->timer.expires = 1 + jiffies;
add_timer(&dpcm->timer);
dpcm->pcm_irq_pos += dpcm->pcm_jiffie;
dpcm->pcm_buf_pos %= dpcm->pcm_size;
if (dpcm->pcm_irq_pos >= dpcm->pcm_count) {
dpcm->pcm_irq_pos %= dpcm->pcm_count;
- spin_unlock(&dpcm->lock);
+ spin_unlock_irqrestore(&dpcm->lock, flags);
snd_pcm_period_elapsed(dpcm->substream);
- spin_lock(&dpcm->lock);
- }
- spin_unlock(&dpcm->lock);
+ } else
+ spin_unlock_irqrestore(&dpcm->lock, flags);
}
static snd_pcm_uframes_t snd_card_dummy_pcm_pointer(struct snd_pcm_substream *substream)
.channels_max = USE_CHANNELS_MAX,
.buffer_bytes_max = MAX_BUFFER_SIZE,
.period_bytes_min = 64,
- .period_bytes_max = MAX_BUFFER_SIZE,
+ .period_bytes_max = MAX_PERIOD_SIZE,
.periods_min = USE_PERIODS_MIN,
.periods_max = USE_PERIODS_MAX,
.fifo_size = 0,
.channels_max = USE_CHANNELS_MAX,
.buffer_bytes_max = MAX_BUFFER_SIZE,
.period_bytes_min = 64,
- .period_bytes_max = MAX_BUFFER_SIZE,
+ .period_bytes_max = MAX_PERIOD_SIZE,
.periods_min = USE_PERIODS_MIN,
.periods_max = USE_PERIODS_MAX,
.fifo_size = 0,
.pointer = snd_card_dummy_pcm_pointer,
};
-static int __init snd_card_dummy_pcm(struct snd_dummy *dummy, int device, int substreams)
+static int __devinit snd_card_dummy_pcm(struct snd_dummy *dummy, int device,
+ int substreams)
{
struct snd_pcm *pcm;
int err;
}
#define DUMMY_VOLUME(xname, xindex, addr) \
-{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
+ .name = xname, .index = xindex, \
.info = snd_dummy_volume_info, \
.get = snd_dummy_volume_get, .put = snd_dummy_volume_put, \
- .private_value = addr }
+ .private_value = addr, \
+ .tlv = { .p = db_scale_dummy } }
static int snd_dummy_volume_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
return change;
}
+static const DECLARE_TLV_DB_SCALE(db_scale_dummy, -4500, 30, 0);
+
#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 }
-static int snd_dummy_capsrc_info(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_info *uinfo)
-{
- uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
- uinfo->count = 2;
- uinfo->value.integer.min = 0;
- uinfo->value.integer.max = 1;
- return 0;
-}
+#define snd_dummy_capsrc_info snd_ctl_boolean_stereo_info
static int snd_dummy_capsrc_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
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),
-DUMMY_CAPSRC("Synth Capture Switch", 0, MIXER_ADDR_MASTER),
+DUMMY_CAPSRC("Synth Capture Switch", 0, MIXER_ADDR_SYNTH),
DUMMY_VOLUME("Line Volume", 0, MIXER_ADDR_LINE),
-DUMMY_CAPSRC("Line Capture Switch", 0, MIXER_ADDR_MASTER),
+DUMMY_CAPSRC("Line Capture Switch", 0, MIXER_ADDR_LINE),
DUMMY_VOLUME("Mic Volume", 0, MIXER_ADDR_MIC),
-DUMMY_CAPSRC("Mic Capture Switch", 0, MIXER_ADDR_MASTER),
+DUMMY_CAPSRC("Mic Capture Switch", 0, MIXER_ADDR_MIC),
DUMMY_VOLUME("CD Volume", 0, MIXER_ADDR_CD),
-DUMMY_CAPSRC("CD Capture Switch", 0, MIXER_ADDR_MASTER)
+DUMMY_CAPSRC("CD Capture Switch", 0, MIXER_ADDR_CD)
};
-static int __init snd_card_dummy_new_mixer(struct snd_dummy *dummy)
+static int __devinit snd_card_dummy_new_mixer(struct snd_dummy *dummy)
{
struct snd_card *card = dummy->card;
unsigned int idx;
return 0;
}
-static int __init snd_dummy_probe(struct platform_device *devptr)
+static int __devinit snd_dummy_probe(struct platform_device *devptr)
{
struct snd_card *card;
struct snd_dummy *dummy;
return err;
}
-static int snd_dummy_remove(struct platform_device *devptr)
+static int __devexit snd_dummy_remove(struct platform_device *devptr)
{
snd_card_free(platform_get_drvdata(devptr));
platform_set_drvdata(devptr, NULL);
static struct platform_driver snd_dummy_driver = {
.probe = snd_dummy_probe,
- .remove = snd_dummy_remove,
+ .remove = __devexit_p(snd_dummy_remove),
#ifdef CONFIG_PM
.suspend = snd_dummy_suspend,
.resume = snd_dummy_resume,
},
};
+static void snd_dummy_unregister_all(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(devices); ++i)
+ platform_device_unregister(devices[i]);
+ platform_driver_unregister(&snd_dummy_driver);
+}
+
static int __init alsa_card_dummy_init(void)
{
int i, cards, err;
return err;
cards = 0;
- for (i = 0; i < SNDRV_CARDS && enable[i]; i++) {
+ for (i = 0; i < SNDRV_CARDS; i++) {
struct platform_device *device;
+ if (! enable[i])
+ continue;
device = platform_device_register_simple(SND_DUMMY_DRIVER,
i, NULL, 0);
- if (IS_ERR(device)) {
- err = PTR_ERR(device);
- goto errout;
+ if (IS_ERR(device))
+ continue;
+ if (!platform_get_drvdata(device)) {
+ platform_device_unregister(device);
+ continue;
}
+ devices[i] = device;
cards++;
}
if (!cards) {
#ifdef MODULE
printk(KERN_ERR "Dummy soundcard not found or device busy\n");
#endif
- err = -ENODEV;
- goto errout;
+ snd_dummy_unregister_all();
+ return -ENODEV;
}
return 0;
-
- errout:
- platform_driver_unregister(&snd_dummy_driver);
- return err;
}
static void __exit alsa_card_dummy_exit(void)
{
- platform_driver_unregister(&snd_dummy_driver);
+ snd_dummy_unregister_all();
}
module_init(alsa_card_dummy_init)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff