forked from luck/tmp_suning_uos_patched
61e77107fa
create sysfs device symlinks for snd-aoa in /sys/class/sound/controlC0 This allows hald to recognize the device as sound device. Furthermore it allows the desktop user to actually access the sound device nodes. hald and related packages will modify the acl attributes. Fixes https://bugzilla.novell.com/show_bug.cgi?id=106294 Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
/*
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* Apple Onboard Audio Alsa helpers
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*
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* Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
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*
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* GPL v2, can be found in COPYING.
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*/
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#include <linux/module.h>
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#include "snd-aoa-alsa.h"
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static int index = -1;
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module_param(index, int, 0444);
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MODULE_PARM_DESC(index, "index for AOA sound card.");
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static struct aoa_card *aoa_card;
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int aoa_alsa_init(char *name, struct module *mod, struct device *dev)
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{
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struct snd_card *alsa_card;
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int err;
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if (aoa_card)
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/* cannot be EEXIST due to usage in aoa_fabric_register */
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return -EBUSY;
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alsa_card = snd_card_new(index, name, mod, sizeof(struct aoa_card));
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if (!alsa_card)
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return -ENOMEM;
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aoa_card = alsa_card->private_data;
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aoa_card->alsa_card = alsa_card;
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alsa_card->dev = dev;
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strlcpy(alsa_card->driver, "AppleOnbdAudio", sizeof(alsa_card->driver));
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strlcpy(alsa_card->shortname, name, sizeof(alsa_card->shortname));
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strlcpy(alsa_card->longname, name, sizeof(alsa_card->longname));
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strlcpy(alsa_card->mixername, name, sizeof(alsa_card->mixername));
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err = snd_card_register(aoa_card->alsa_card);
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if (err < 0) {
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printk(KERN_ERR "snd-aoa: couldn't register alsa card\n");
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snd_card_free(aoa_card->alsa_card);
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aoa_card = NULL;
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return err;
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}
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return 0;
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}
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struct snd_card *aoa_get_card(void)
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{
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if (aoa_card)
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return aoa_card->alsa_card;
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return NULL;
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}
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EXPORT_SYMBOL_GPL(aoa_get_card);
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void aoa_alsa_cleanup(void)
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{
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if (aoa_card) {
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snd_card_free(aoa_card->alsa_card);
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aoa_card = NULL;
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}
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}
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int aoa_snd_device_new(snd_device_type_t type,
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void * device_data, struct snd_device_ops * ops)
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{
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struct snd_card *card = aoa_get_card();
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int err;
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if (!card) return -ENOMEM;
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err = snd_device_new(card, type, device_data, ops);
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if (err) {
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printk(KERN_ERR "snd-aoa: failed to create snd device (%d)\n", err);
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return err;
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}
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err = snd_device_register(card, device_data);
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if (err) {
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printk(KERN_ERR "snd-aoa: failed to register "
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"snd device (%d)\n", err);
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printk(KERN_ERR "snd-aoa: have you forgotten the "
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"dev_register callback?\n");
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snd_device_free(card, device_data);
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}
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return err;
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}
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EXPORT_SYMBOL_GPL(aoa_snd_device_new);
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int aoa_snd_ctl_add(struct snd_kcontrol* control)
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{
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int err;
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if (!aoa_card) return -ENODEV;
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err = snd_ctl_add(aoa_card->alsa_card, control);
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if (err)
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printk(KERN_ERR "snd-aoa: failed to add alsa control (%d)\n",
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err);
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return err;
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}
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EXPORT_SYMBOL_GPL(aoa_snd_ctl_add);
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