Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/sound/core/sound.c b/sound/core/sound.c
new file mode 100644
index 0000000..88e0520
--- /dev/null
+++ b/sound/core/sound.c
@@ -0,0 +1,491 @@
+/*
+ * Advanced Linux Sound Architecture
+ * Copyright (c) by Jaroslav Kysela <perex@suse.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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <sound/driver.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/time.h>
+#include <linux/moduleparam.h>
+#include <sound/core.h>
+#include <sound/minors.h>
+#include <sound/info.h>
+#include <sound/version.h>
+#include <sound/control.h>
+#include <sound/initval.h>
+#include <linux/kmod.h>
+#include <linux/devfs_fs_kernel.h>
+#include <linux/device.h>
+
+#define SNDRV_OS_MINORS 256
+
+static int major = CONFIG_SND_MAJOR;
+int snd_major;
+static int cards_limit = 1;
+static int device_mode = S_IFCHR | S_IRUGO | S_IWUGO;
+
+MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
+MODULE_DESCRIPTION("Advanced Linux Sound Architecture driver for soundcards.");
+MODULE_LICENSE("GPL");
+module_param(major, int, 0444);
+MODULE_PARM_DESC(major, "Major # for sound driver.");
+module_param(cards_limit, int, 0444);
+MODULE_PARM_DESC(cards_limit, "Count of auto-loadable soundcards.");
+#ifdef CONFIG_DEVFS_FS
+module_param(device_mode, int, 0444);
+MODULE_PARM_DESC(device_mode, "Device file permission mask for devfs.");
+#endif
+MODULE_ALIAS_CHARDEV_MAJOR(CONFIG_SND_MAJOR);
+
+/* this one holds the actual max. card number currently available.
+ * as default, it's identical with cards_limit option. when more
+ * modules are loaded manually, this limit number increases, too.
+ */
+int snd_ecards_limit;
+
+static struct list_head snd_minors_hash[SNDRV_CARDS];
+
+static DECLARE_MUTEX(sound_mutex);
+
+extern struct class_simple *sound_class;
+
+
+#ifdef CONFIG_KMOD
+
+/**
+ * snd_request_card - try to load the card module
+ * @card: the card number
+ *
+ * Tries to load the module "snd-card-X" for the given card number
+ * via KMOD. Returns immediately if already loaded.
+ */
+void snd_request_card(int card)
+{
+ int locked;
+
+ if (! current->fs->root)
+ return;
+ read_lock(&snd_card_rwlock);
+ locked = snd_cards_lock & (1 << card);
+ read_unlock(&snd_card_rwlock);
+ if (locked)
+ return;
+ if (card < 0 || card >= cards_limit)
+ return;
+ request_module("snd-card-%i", card);
+}
+
+static void snd_request_other(int minor)
+{
+ char *str;
+
+ if (! current->fs->root)
+ return;
+ switch (minor) {
+ case SNDRV_MINOR_SEQUENCER: str = "snd-seq"; break;
+ case SNDRV_MINOR_TIMER: str = "snd-timer"; break;
+ default: return;
+ }
+ request_module(str);
+}
+
+#endif /* request_module support */
+
+static snd_minor_t *snd_minor_search(int minor)
+{
+ struct list_head *list;
+ snd_minor_t *mptr;
+
+ list_for_each(list, &snd_minors_hash[SNDRV_MINOR_CARD(minor)]) {
+ mptr = list_entry(list, snd_minor_t, list);
+ if (mptr->number == minor)
+ return mptr;
+ }
+ return NULL;
+}
+
+static int snd_open(struct inode *inode, struct file *file)
+{
+ int minor = iminor(inode);
+ int card = SNDRV_MINOR_CARD(minor);
+ int dev = SNDRV_MINOR_DEVICE(minor);
+ snd_minor_t *mptr = NULL;
+ struct file_operations *old_fops;
+ int err = 0;
+
+ if (dev != SNDRV_MINOR_SEQUENCER && dev != SNDRV_MINOR_TIMER) {
+ if (snd_cards[card] == NULL) {
+#ifdef CONFIG_KMOD
+ snd_request_card(card);
+ if (snd_cards[card] == NULL)
+#endif
+ return -ENODEV;
+ }
+ } else {
+#ifdef CONFIG_KMOD
+ if ((mptr = snd_minor_search(minor)) == NULL)
+ snd_request_other(minor);
+#endif
+ }
+ if (mptr == NULL && (mptr = snd_minor_search(minor)) == NULL)
+ return -ENODEV;
+ old_fops = file->f_op;
+ file->f_op = fops_get(mptr->f_ops);
+ if (file->f_op->open)
+ err = file->f_op->open(inode, file);
+ if (err) {
+ fops_put(file->f_op);
+ file->f_op = fops_get(old_fops);
+ }
+ fops_put(old_fops);
+ return err;
+}
+
+static struct file_operations snd_fops =
+{
+ .owner = THIS_MODULE,
+ .open = snd_open
+};
+
+static int snd_kernel_minor(int type, snd_card_t * card, int dev)
+{
+ int minor;
+
+ switch (type) {
+ case SNDRV_DEVICE_TYPE_SEQUENCER:
+ case SNDRV_DEVICE_TYPE_TIMER:
+ minor = type;
+ break;
+ case SNDRV_DEVICE_TYPE_CONTROL:
+ snd_assert(card != NULL, return -EINVAL);
+ minor = SNDRV_MINOR(card->number, type);
+ break;
+ case SNDRV_DEVICE_TYPE_HWDEP:
+ case SNDRV_DEVICE_TYPE_RAWMIDI:
+ case SNDRV_DEVICE_TYPE_PCM_PLAYBACK:
+ case SNDRV_DEVICE_TYPE_PCM_CAPTURE:
+ snd_assert(card != NULL, return -EINVAL);
+ minor = SNDRV_MINOR(card->number, type + dev);
+ break;
+ default:
+ return -EINVAL;
+ }
+ snd_assert(minor >= 0 && minor < SNDRV_OS_MINORS, return -EINVAL);
+ return minor;
+}
+
+/**
+ * snd_register_device - Register the ALSA device file for the card
+ * @type: the device type, SNDRV_DEVICE_TYPE_XXX
+ * @card: the card instance
+ * @dev: the device index
+ * @reg: the snd_minor_t record
+ * @name: the device file name
+ *
+ * Registers an ALSA device file for the given card.
+ * The operators have to be set in reg parameter.
+ *
+ * Retrurns zero if successful, or a negative error code on failure.
+ */
+int snd_register_device(int type, snd_card_t * card, int dev, snd_minor_t * reg, const char *name)
+{
+ int minor = snd_kernel_minor(type, card, dev);
+ snd_minor_t *preg;
+ struct device *device = NULL;
+
+ if (minor < 0)
+ return minor;
+ snd_assert(name, return -EINVAL);
+ preg = (snd_minor_t *)kmalloc(sizeof(snd_minor_t) + strlen(name) + 1, GFP_KERNEL);
+ if (preg == NULL)
+ return -ENOMEM;
+ *preg = *reg;
+ preg->number = minor;
+ preg->device = dev;
+ strcpy(preg->name, name);
+ down(&sound_mutex);
+ if (snd_minor_search(minor)) {
+ up(&sound_mutex);
+ kfree(preg);
+ return -EBUSY;
+ }
+ list_add_tail(&preg->list, &snd_minors_hash[SNDRV_MINOR_CARD(minor)]);
+ if (strncmp(name, "controlC", 8) || card->number >= cards_limit)
+ devfs_mk_cdev(MKDEV(major, minor), S_IFCHR | device_mode, "snd/%s", name);
+ if (card)
+ device = card->dev;
+ class_simple_device_add(sound_class, MKDEV(major, minor), device, name);
+
+ up(&sound_mutex);
+ return 0;
+}
+
+/**
+ * snd_unregister_device - unregister the device on the given card
+ * @type: the device type, SNDRV_DEVICE_TYPE_XXX
+ * @card: the card instance
+ * @dev: the device index
+ *
+ * Unregisters the device file already registered via
+ * snd_register_device().
+ *
+ * Returns zero if sucecessful, or a negative error code on failure
+ */
+int snd_unregister_device(int type, snd_card_t * card, int dev)
+{
+ int minor = snd_kernel_minor(type, card, dev);
+ snd_minor_t *mptr;
+
+ if (minor < 0)
+ return minor;
+ down(&sound_mutex);
+ if ((mptr = snd_minor_search(minor)) == NULL) {
+ up(&sound_mutex);
+ return -EINVAL;
+ }
+
+ if (strncmp(mptr->name, "controlC", 8) || card->number >= cards_limit) /* created in sound.c */
+ devfs_remove("snd/%s", mptr->name);
+ class_simple_device_remove(MKDEV(major, minor));
+
+ list_del(&mptr->list);
+ up(&sound_mutex);
+ kfree(mptr);
+ return 0;
+}
+
+/*
+ * INFO PART
+ */
+
+static snd_info_entry_t *snd_minor_info_entry = NULL;
+
+static void snd_minor_info_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
+{
+ int card, device;
+ struct list_head *list;
+ snd_minor_t *mptr;
+
+ down(&sound_mutex);
+ for (card = 0; card < SNDRV_CARDS; card++) {
+ list_for_each(list, &snd_minors_hash[card]) {
+ mptr = list_entry(list, snd_minor_t, list);
+ if (SNDRV_MINOR_DEVICE(mptr->number) != SNDRV_MINOR_SEQUENCER) {
+ if ((device = mptr->device) >= 0)
+ snd_iprintf(buffer, "%3i: [%i-%2i]: %s\n", mptr->number, card, device, mptr->comment);
+ else
+ snd_iprintf(buffer, "%3i: [%i] : %s\n", mptr->number, card, mptr->comment);
+ } else {
+ snd_iprintf(buffer, "%3i: : %s\n", mptr->number, mptr->comment);
+ }
+ }
+ }
+ up(&sound_mutex);
+}
+
+int __init snd_minor_info_init(void)
+{
+ snd_info_entry_t *entry;
+
+ entry = snd_info_create_module_entry(THIS_MODULE, "devices", NULL);
+ if (entry) {
+ entry->c.text.read_size = PAGE_SIZE;
+ entry->c.text.read = snd_minor_info_read;
+ if (snd_info_register(entry) < 0) {
+ snd_info_free_entry(entry);
+ entry = NULL;
+ }
+ }
+ snd_minor_info_entry = entry;
+ return 0;
+}
+
+int __exit snd_minor_info_done(void)
+{
+ if (snd_minor_info_entry)
+ snd_info_unregister(snd_minor_info_entry);
+ return 0;
+}
+
+/*
+ * INIT PART
+ */
+
+static int __init alsa_sound_init(void)
+{
+ short controlnum;
+ int err;
+ int card;
+
+ snd_major = major;
+ snd_ecards_limit = cards_limit;
+ for (card = 0; card < SNDRV_CARDS; card++)
+ INIT_LIST_HEAD(&snd_minors_hash[card]);
+ if ((err = snd_oss_init_module()) < 0)
+ return err;
+ devfs_mk_dir("snd");
+ if (register_chrdev(major, "alsa", &snd_fops)) {
+ snd_printk(KERN_ERR "unable to register native major device number %d\n", major);
+ devfs_remove("snd");
+ return -EIO;
+ }
+ snd_memory_init();
+ if (snd_info_init() < 0) {
+ snd_memory_done();
+ unregister_chrdev(major, "alsa");
+ devfs_remove("snd");
+ return -ENOMEM;
+ }
+ snd_info_minor_register();
+ for (controlnum = 0; controlnum < cards_limit; controlnum++)
+ devfs_mk_cdev(MKDEV(major, controlnum<<5), S_IFCHR | device_mode, "snd/controlC%d", controlnum);
+#ifndef MODULE
+ printk(KERN_INFO "Advanced Linux Sound Architecture Driver Version " CONFIG_SND_VERSION CONFIG_SND_DATE ".\n");
+#endif
+ return 0;
+}
+
+static void __exit alsa_sound_exit(void)
+{
+ short controlnum;
+
+ for (controlnum = 0; controlnum < cards_limit; controlnum++)
+ devfs_remove("snd/controlC%d", controlnum);
+
+ snd_info_minor_unregister();
+ snd_info_done();
+ snd_memory_done();
+ if (unregister_chrdev(major, "alsa") != 0)
+ snd_printk(KERN_ERR "unable to unregister major device number %d\n", major);
+ devfs_remove("snd");
+}
+
+module_init(alsa_sound_init)
+module_exit(alsa_sound_exit)
+
+ /* sound.c */
+EXPORT_SYMBOL(snd_major);
+EXPORT_SYMBOL(snd_ecards_limit);
+#if defined(CONFIG_KMOD)
+EXPORT_SYMBOL(snd_request_card);
+#endif
+EXPORT_SYMBOL(snd_register_device);
+EXPORT_SYMBOL(snd_unregister_device);
+#if defined(CONFIG_SND_OSSEMUL)
+EXPORT_SYMBOL(snd_register_oss_device);
+EXPORT_SYMBOL(snd_unregister_oss_device);
+#endif
+ /* memory.c */
+#ifdef CONFIG_SND_DEBUG_MEMORY
+EXPORT_SYMBOL(snd_hidden_kmalloc);
+EXPORT_SYMBOL(snd_hidden_kcalloc);
+EXPORT_SYMBOL(snd_hidden_kfree);
+EXPORT_SYMBOL(snd_hidden_vmalloc);
+EXPORT_SYMBOL(snd_hidden_vfree);
+#endif
+EXPORT_SYMBOL(snd_kmalloc_strdup);
+EXPORT_SYMBOL(copy_to_user_fromio);
+EXPORT_SYMBOL(copy_from_user_toio);
+ /* init.c */
+EXPORT_SYMBOL(snd_cards);
+#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
+EXPORT_SYMBOL(snd_mixer_oss_notify_callback);
+#endif
+EXPORT_SYMBOL(snd_card_new);
+EXPORT_SYMBOL(snd_card_disconnect);
+EXPORT_SYMBOL(snd_card_free);
+EXPORT_SYMBOL(snd_card_free_in_thread);
+EXPORT_SYMBOL(snd_card_register);
+EXPORT_SYMBOL(snd_component_add);
+EXPORT_SYMBOL(snd_card_file_add);
+EXPORT_SYMBOL(snd_card_file_remove);
+#ifdef CONFIG_PM
+EXPORT_SYMBOL(snd_power_wait);
+EXPORT_SYMBOL(snd_card_set_pm_callback);
+#if defined(CONFIG_PM) && defined(CONFIG_SND_GENERIC_PM)
+EXPORT_SYMBOL(snd_card_set_generic_pm_callback);
+#endif
+#ifdef CONFIG_PCI
+EXPORT_SYMBOL(snd_card_pci_suspend);
+EXPORT_SYMBOL(snd_card_pci_resume);
+#endif
+#endif
+ /* device.c */
+EXPORT_SYMBOL(snd_device_new);
+EXPORT_SYMBOL(snd_device_register);
+EXPORT_SYMBOL(snd_device_free);
+EXPORT_SYMBOL(snd_device_free_all);
+ /* isadma.c */
+#ifdef CONFIG_ISA
+EXPORT_SYMBOL(snd_dma_program);
+EXPORT_SYMBOL(snd_dma_disable);
+EXPORT_SYMBOL(snd_dma_pointer);
+#endif
+ /* info.c */
+#ifdef CONFIG_PROC_FS
+EXPORT_SYMBOL(snd_seq_root);
+EXPORT_SYMBOL(snd_iprintf);
+EXPORT_SYMBOL(snd_info_get_line);
+EXPORT_SYMBOL(snd_info_get_str);
+EXPORT_SYMBOL(snd_info_create_module_entry);
+EXPORT_SYMBOL(snd_info_create_card_entry);
+EXPORT_SYMBOL(snd_info_free_entry);
+EXPORT_SYMBOL(snd_info_register);
+EXPORT_SYMBOL(snd_info_unregister);
+EXPORT_SYMBOL(snd_card_proc_new);
+#endif
+ /* info_oss.c */
+#if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
+EXPORT_SYMBOL(snd_oss_info_register);
+#endif
+ /* control.c */
+EXPORT_SYMBOL(snd_ctl_new);
+EXPORT_SYMBOL(snd_ctl_new1);
+EXPORT_SYMBOL(snd_ctl_free_one);
+EXPORT_SYMBOL(snd_ctl_add);
+EXPORT_SYMBOL(snd_ctl_remove);
+EXPORT_SYMBOL(snd_ctl_remove_id);
+EXPORT_SYMBOL(snd_ctl_rename_id);
+EXPORT_SYMBOL(snd_ctl_find_numid);
+EXPORT_SYMBOL(snd_ctl_find_id);
+EXPORT_SYMBOL(snd_ctl_notify);
+EXPORT_SYMBOL(snd_ctl_register_ioctl);
+EXPORT_SYMBOL(snd_ctl_unregister_ioctl);
+#ifdef CONFIG_COMPAT
+EXPORT_SYMBOL(snd_ctl_register_ioctl_compat);
+EXPORT_SYMBOL(snd_ctl_unregister_ioctl_compat);
+#endif
+EXPORT_SYMBOL(snd_ctl_elem_read);
+EXPORT_SYMBOL(snd_ctl_elem_write);
+ /* misc.c */
+EXPORT_SYMBOL(snd_task_name);
+#ifdef CONFIG_SND_VERBOSE_PRINTK
+EXPORT_SYMBOL(snd_verbose_printk);
+#endif
+#if defined(CONFIG_SND_DEBUG) && defined(CONFIG_SND_VERBOSE_PRINTK)
+EXPORT_SYMBOL(snd_verbose_printd);
+#endif
+ /* wrappers */
+#ifdef CONFIG_SND_DEBUG_MEMORY
+EXPORT_SYMBOL(snd_wrapper_kmalloc);
+EXPORT_SYMBOL(snd_wrapper_kfree);
+EXPORT_SYMBOL(snd_wrapper_vmalloc);
+EXPORT_SYMBOL(snd_wrapper_vfree);
+#endif
