Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 491 insertions, 0 deletions

diff --git a/sound/core/sound.c b/sound/core/sound.c
new file mode 100644
index 000000000000..88e052079f85
--- /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