This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / sound / aoa / core / snd-aoa-alsa.c

diff --git a/sound/aoa/core/snd-aoa-alsa.c b/sound/aoa/core/snd-aoa-alsa.c
new file mode 100644 (file)
index 0000000..b42fdea
--- /dev/null
+++ b/sound/aoa/core/snd-aoa-alsa.c
@@ -0,0 +1,98 @@
+/*
+ * Apple Onboard Audio Alsa helpers
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ */
+#include <linux/module.h>
+#include "snd-aoa-alsa.h"
+
+static int index = -1;
+module_param(index, int, 0444);
+MODULE_PARM_DESC(index, "index for AOA sound card.");
+
+static struct aoa_card *aoa_card;
+
+int aoa_alsa_init(char *name, struct module *mod)
+{
+       struct snd_card *alsa_card;
+       int err;
+
+       if (aoa_card)
+               /* cannot be EEXIST due to usage in aoa_fabric_register */
+               return -EBUSY;
+
+       alsa_card = snd_card_new(index, name, mod, sizeof(struct aoa_card));
+       if (!alsa_card)
+               return -ENOMEM;
+       aoa_card = alsa_card->private_data;
+       aoa_card->alsa_card = alsa_card;
+       strlcpy(alsa_card->driver, "AppleOnbdAudio", sizeof(alsa_card->driver));
+       strlcpy(alsa_card->shortname, name, sizeof(alsa_card->shortname));
+       strlcpy(alsa_card->longname, name, sizeof(alsa_card->longname));
+       strlcpy(alsa_card->mixername, name, sizeof(alsa_card->mixername));
+       err = snd_card_register(aoa_card->alsa_card);
+       if (err < 0) {
+               printk(KERN_ERR "snd-aoa: couldn't register alsa card\n");
+               snd_card_free(aoa_card->alsa_card);
+               aoa_card = NULL;
+               return err;
+       }
+       return 0;
+}
+
+struct snd_card *aoa_get_card(void)
+{
+       if (aoa_card)
+               return aoa_card->alsa_card;
+       return NULL;
+}
+EXPORT_SYMBOL_GPL(aoa_get_card);
+
+void aoa_alsa_cleanup(void)
+{
+       if (aoa_card) {
+               snd_card_free(aoa_card->alsa_card);
+               aoa_card = NULL;
+       }
+}
+
+int aoa_snd_device_new(snd_device_type_t type,
+        void * device_data, struct snd_device_ops * ops)
+{
+       struct snd_card *card = aoa_get_card();
+       int err;
+       
+       if (!card) return -ENOMEM;
+
+       err = snd_device_new(card, type, device_data, ops);
+       if (err) {
+               printk(KERN_ERR "snd-aoa: failed to create snd device (%d)\n", err);
+               return err;
+       }
+       err = snd_device_register(card, device_data);
+       if (err) {
+               printk(KERN_ERR "snd-aoa: failed to register "
+                               "snd device (%d)\n", err);
+               printk(KERN_ERR "snd-aoa: have you forgotten the "
+                               "dev_register callback?\n");
+               snd_device_free(card, device_data);
+       }
+       return err;
+}
+EXPORT_SYMBOL_GPL(aoa_snd_device_new);
+
+int aoa_snd_ctl_add(struct snd_kcontrol* control)
+{
+       int err;
+
+       if (!aoa_card) return -ENODEV;
+
+       err = snd_ctl_add(aoa_card->alsa_card, control);
+       if (err)
+               printk(KERN_ERR "snd-aoa: failed to add alsa control (%d)\n",
+                      err);
+       return err;
+}
+EXPORT_SYMBOL_GPL(aoa_snd_ctl_add);