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Diffstat (limited to 'ANDROID_3.4.5/sound/core/hwdep.c')
-rw-r--r--ANDROID_3.4.5/sound/core/hwdep.c547
1 files changed, 0 insertions, 547 deletions
diff --git a/ANDROID_3.4.5/sound/core/hwdep.c b/ANDROID_3.4.5/sound/core/hwdep.c
deleted file mode 100644
index 3f7f6628..00000000
--- a/ANDROID_3.4.5/sound/core/hwdep.c
+++ /dev/null
@@ -1,547 +0,0 @@
-/*
- * Hardware dependent layer
- * 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
- * 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 <linux/major.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/time.h>
-#include <linux/mutex.h>
-#include <linux/module.h>
-#include <sound/core.h>
-#include <sound/control.h>
-#include <sound/minors.h>
-#include <sound/hwdep.h>
-#include <sound/info.h>
-
-MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
-MODULE_DESCRIPTION("Hardware dependent layer");
-MODULE_LICENSE("GPL");
-
-static LIST_HEAD(snd_hwdep_devices);
-static DEFINE_MUTEX(register_mutex);
-
-static int snd_hwdep_free(struct snd_hwdep *hwdep);
-static int snd_hwdep_dev_free(struct snd_device *device);
-static int snd_hwdep_dev_register(struct snd_device *device);
-static int snd_hwdep_dev_disconnect(struct snd_device *device);
-
-
-static struct snd_hwdep *snd_hwdep_search(struct snd_card *card, int device)
-{
- struct snd_hwdep *hwdep;
-
- list_for_each_entry(hwdep, &snd_hwdep_devices, list)
- if (hwdep->card == card && hwdep->device == device)
- return hwdep;
- return NULL;
-}
-
-static loff_t snd_hwdep_llseek(struct file * file, loff_t offset, int orig)
-{
- struct snd_hwdep *hw = file->private_data;
- if (hw->ops.llseek)
- return hw->ops.llseek(hw, file, offset, orig);
- return -ENXIO;
-}
-
-static ssize_t snd_hwdep_read(struct file * file, char __user *buf,
- size_t count, loff_t *offset)
-{
- struct snd_hwdep *hw = file->private_data;
- if (hw->ops.read)
- return hw->ops.read(hw, buf, count, offset);
- return -ENXIO;
-}
-
-static ssize_t snd_hwdep_write(struct file * file, const char __user *buf,
- size_t count, loff_t *offset)
-{
- struct snd_hwdep *hw = file->private_data;
- if (hw->ops.write)
- return hw->ops.write(hw, buf, count, offset);
- return -ENXIO;
-}
-
-static int snd_hwdep_open(struct inode *inode, struct file * file)
-{
- int major = imajor(inode);
- struct snd_hwdep *hw;
- int err;
- wait_queue_t wait;
-
- if (major == snd_major) {
- hw = snd_lookup_minor_data(iminor(inode),
- SNDRV_DEVICE_TYPE_HWDEP);
-#ifdef CONFIG_SND_OSSEMUL
- } else if (major == SOUND_MAJOR) {
- hw = snd_lookup_oss_minor_data(iminor(inode),
- SNDRV_OSS_DEVICE_TYPE_DMFM);
-#endif
- } else
- return -ENXIO;
- if (hw == NULL)
- return -ENODEV;
-
- if (!try_module_get(hw->card->module)) {
- snd_card_unref(hw->card);
- return -EFAULT;
- }
-
- init_waitqueue_entry(&wait, current);
- add_wait_queue(&hw->open_wait, &wait);
- mutex_lock(&hw->open_mutex);
- while (1) {
- if (hw->exclusive && hw->used > 0) {
- err = -EBUSY;
- break;
- }
- if (!hw->ops.open) {
- err = 0;
- break;
- }
- err = hw->ops.open(hw, file);
- if (err >= 0)
- break;
- if (err == -EAGAIN) {
- if (file->f_flags & O_NONBLOCK) {
- err = -EBUSY;
- break;
- }
- } else
- break;
- set_current_state(TASK_INTERRUPTIBLE);
- mutex_unlock(&hw->open_mutex);
- schedule();
- mutex_lock(&hw->open_mutex);
- if (hw->card->shutdown) {
- err = -ENODEV;
- break;
- }
- if (signal_pending(current)) {
- err = -ERESTARTSYS;
- break;
- }
- }
- remove_wait_queue(&hw->open_wait, &wait);
- if (err >= 0) {
- err = snd_card_file_add(hw->card, file);
- if (err >= 0) {
- file->private_data = hw;
- hw->used++;
- } else {
- if (hw->ops.release)
- hw->ops.release(hw, file);
- }
- }
- mutex_unlock(&hw->open_mutex);
- if (err < 0)
- module_put(hw->card->module);
- snd_card_unref(hw->card);
- return err;
-}
-
-static int snd_hwdep_release(struct inode *inode, struct file * file)
-{
- int err = 0;
- struct snd_hwdep *hw = file->private_data;
- struct module *mod = hw->card->module;
-
- mutex_lock(&hw->open_mutex);
- if (hw->ops.release)
- err = hw->ops.release(hw, file);
- if (hw->used > 0)
- hw->used--;
- mutex_unlock(&hw->open_mutex);
- wake_up(&hw->open_wait);
-
- snd_card_file_remove(hw->card, file);
- module_put(mod);
- return err;
-}
-
-static unsigned int snd_hwdep_poll(struct file * file, poll_table * wait)
-{
- struct snd_hwdep *hw = file->private_data;
- if (hw->ops.poll)
- return hw->ops.poll(hw, file, wait);
- return 0;
-}
-
-static int snd_hwdep_info(struct snd_hwdep *hw,
- struct snd_hwdep_info __user *_info)
-{
- struct snd_hwdep_info info;
-
- memset(&info, 0, sizeof(info));
- info.card = hw->card->number;
- strlcpy(info.id, hw->id, sizeof(info.id));
- strlcpy(info.name, hw->name, sizeof(info.name));
- info.iface = hw->iface;
- if (copy_to_user(_info, &info, sizeof(info)))
- return -EFAULT;
- return 0;
-}
-
-static int snd_hwdep_dsp_status(struct snd_hwdep *hw,
- struct snd_hwdep_dsp_status __user *_info)
-{
- struct snd_hwdep_dsp_status info;
- int err;
-
- if (! hw->ops.dsp_status)
- return -ENXIO;
- memset(&info, 0, sizeof(info));
- info.dsp_loaded = hw->dsp_loaded;
- if ((err = hw->ops.dsp_status(hw, &info)) < 0)
- return err;
- if (copy_to_user(_info, &info, sizeof(info)))
- return -EFAULT;
- return 0;
-}
-
-static int snd_hwdep_dsp_load(struct snd_hwdep *hw,
- struct snd_hwdep_dsp_image __user *_info)
-{
- struct snd_hwdep_dsp_image info;
- int err;
-
- if (! hw->ops.dsp_load)
- return -ENXIO;
- memset(&info, 0, sizeof(info));
- if (copy_from_user(&info, _info, sizeof(info)))
- return -EFAULT;
- /* check whether the dsp was already loaded */
- if (hw->dsp_loaded & (1 << info.index))
- return -EBUSY;
- if (!access_ok(VERIFY_READ, info.image, info.length))
- return -EFAULT;
- err = hw->ops.dsp_load(hw, &info);
- if (err < 0)
- return err;
- hw->dsp_loaded |= (1 << info.index);
- return 0;
-}
-
-static long snd_hwdep_ioctl(struct file * file, unsigned int cmd,
- unsigned long arg)
-{
- struct snd_hwdep *hw = file->private_data;
- void __user *argp = (void __user *)arg;
- switch (cmd) {
- case SNDRV_HWDEP_IOCTL_PVERSION:
- return put_user(SNDRV_HWDEP_VERSION, (int __user *)argp);
- case SNDRV_HWDEP_IOCTL_INFO:
- return snd_hwdep_info(hw, argp);
- case SNDRV_HWDEP_IOCTL_DSP_STATUS:
- return snd_hwdep_dsp_status(hw, argp);
- case SNDRV_HWDEP_IOCTL_DSP_LOAD:
- return snd_hwdep_dsp_load(hw, argp);
- }
- if (hw->ops.ioctl)
- return hw->ops.ioctl(hw, file, cmd, arg);
- return -ENOTTY;
-}
-
-static int snd_hwdep_mmap(struct file * file, struct vm_area_struct * vma)
-{
- struct snd_hwdep *hw = file->private_data;
- if (hw->ops.mmap)
- return hw->ops.mmap(hw, file, vma);
- return -ENXIO;
-}
-
-static int snd_hwdep_control_ioctl(struct snd_card *card,
- struct snd_ctl_file * control,
- unsigned int cmd, unsigned long arg)
-{
- switch (cmd) {
- case SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE:
- {
- int device;
-
- if (get_user(device, (int __user *)arg))
- return -EFAULT;
- mutex_lock(&register_mutex);
-
- if (device < 0)
- device = 0;
- else if (device < SNDRV_MINOR_HWDEPS)
- device++;
- else
- device = SNDRV_MINOR_HWDEPS;
-
- while (device < SNDRV_MINOR_HWDEPS) {
- if (snd_hwdep_search(card, device))
- break;
- device++;
- }
- if (device >= SNDRV_MINOR_HWDEPS)
- device = -1;
- mutex_unlock(&register_mutex);
- if (put_user(device, (int __user *)arg))
- return -EFAULT;
- return 0;
- }
- case SNDRV_CTL_IOCTL_HWDEP_INFO:
- {
- struct snd_hwdep_info __user *info = (struct snd_hwdep_info __user *)arg;
- int device, err;
- struct snd_hwdep *hwdep;
-
- if (get_user(device, &info->device))
- return -EFAULT;
- mutex_lock(&register_mutex);
- hwdep = snd_hwdep_search(card, device);
- if (hwdep)
- err = snd_hwdep_info(hwdep, info);
- else
- err = -ENXIO;
- mutex_unlock(&register_mutex);
- return err;
- }
- }
- return -ENOIOCTLCMD;
-}
-
-#ifdef CONFIG_COMPAT
-#include "hwdep_compat.c"
-#else
-#define snd_hwdep_ioctl_compat NULL
-#endif
-
-/*
-
- */
-
-static const struct file_operations snd_hwdep_f_ops =
-{
- .owner = THIS_MODULE,
- .llseek = snd_hwdep_llseek,
- .read = snd_hwdep_read,
- .write = snd_hwdep_write,
- .open = snd_hwdep_open,
- .release = snd_hwdep_release,
- .poll = snd_hwdep_poll,
- .unlocked_ioctl = snd_hwdep_ioctl,
- .compat_ioctl = snd_hwdep_ioctl_compat,
- .mmap = snd_hwdep_mmap,
-};
-
-/**
- * snd_hwdep_new - create a new hwdep instance
- * @card: the card instance
- * @id: the id string
- * @device: the device index (zero-based)
- * @rhwdep: the pointer to store the new hwdep instance
- *
- * Creates a new hwdep instance with the given index on the card.
- * The callbacks (hwdep->ops) must be set on the returned instance
- * after this call manually by the caller.
- *
- * Returns zero if successful, or a negative error code on failure.
- */
-int snd_hwdep_new(struct snd_card *card, char *id, int device,
- struct snd_hwdep **rhwdep)
-{
- struct snd_hwdep *hwdep;
- int err;
- static struct snd_device_ops ops = {
- .dev_free = snd_hwdep_dev_free,
- .dev_register = snd_hwdep_dev_register,
- .dev_disconnect = snd_hwdep_dev_disconnect,
- };
-
- if (snd_BUG_ON(!card))
- return -ENXIO;
- if (rhwdep)
- *rhwdep = NULL;
- hwdep = kzalloc(sizeof(*hwdep), GFP_KERNEL);
- if (hwdep == NULL) {
- snd_printk(KERN_ERR "hwdep: cannot allocate\n");
- return -ENOMEM;
- }
- hwdep->card = card;
- hwdep->device = device;
- if (id)
- strlcpy(hwdep->id, id, sizeof(hwdep->id));
-#ifdef CONFIG_SND_OSSEMUL
- hwdep->oss_type = -1;
-#endif
- if ((err = snd_device_new(card, SNDRV_DEV_HWDEP, hwdep, &ops)) < 0) {
- snd_hwdep_free(hwdep);
- return err;
- }
- init_waitqueue_head(&hwdep->open_wait);
- mutex_init(&hwdep->open_mutex);
- if (rhwdep)
- *rhwdep = hwdep;
- return 0;
-}
-
-static int snd_hwdep_free(struct snd_hwdep *hwdep)
-{
- if (!hwdep)
- return 0;
- if (hwdep->private_free)
- hwdep->private_free(hwdep);
- kfree(hwdep);
- return 0;
-}
-
-static int snd_hwdep_dev_free(struct snd_device *device)
-{
- struct snd_hwdep *hwdep = device->device_data;
- return snd_hwdep_free(hwdep);
-}
-
-static int snd_hwdep_dev_register(struct snd_device *device)
-{
- struct snd_hwdep *hwdep = device->device_data;
- int err;
- char name[32];
-
- mutex_lock(&register_mutex);
- if (snd_hwdep_search(hwdep->card, hwdep->device)) {
- mutex_unlock(&register_mutex);
- return -EBUSY;
- }
- list_add_tail(&hwdep->list, &snd_hwdep_devices);
- sprintf(name, "hwC%iD%i", hwdep->card->number, hwdep->device);
- if ((err = snd_register_device(SNDRV_DEVICE_TYPE_HWDEP,
- hwdep->card, hwdep->device,
- &snd_hwdep_f_ops, hwdep, name)) < 0) {
- snd_printk(KERN_ERR "unable to register hardware dependent device %i:%i\n",
- hwdep->card->number, hwdep->device);
- list_del(&hwdep->list);
- mutex_unlock(&register_mutex);
- return err;
- }
-#ifdef CONFIG_SND_OSSEMUL
- hwdep->ossreg = 0;
- if (hwdep->oss_type >= 0) {
- if ((hwdep->oss_type == SNDRV_OSS_DEVICE_TYPE_DMFM) && (hwdep->device != 0)) {
- snd_printk (KERN_WARNING "only hwdep device 0 can be registered as OSS direct FM device!\n");
- } else {
- if (snd_register_oss_device(hwdep->oss_type,
- hwdep->card, hwdep->device,
- &snd_hwdep_f_ops, hwdep,
- hwdep->oss_dev) < 0) {
- snd_printk(KERN_ERR "unable to register OSS compatibility device %i:%i\n",
- hwdep->card->number, hwdep->device);
- } else
- hwdep->ossreg = 1;
- }
- }
-#endif
- mutex_unlock(&register_mutex);
- return 0;
-}
-
-static int snd_hwdep_dev_disconnect(struct snd_device *device)
-{
- struct snd_hwdep *hwdep = device->device_data;
-
- if (snd_BUG_ON(!hwdep))
- return -ENXIO;
- mutex_lock(&register_mutex);
- if (snd_hwdep_search(hwdep->card, hwdep->device) != hwdep) {
- mutex_unlock(&register_mutex);
- return -EINVAL;
- }
- mutex_lock(&hwdep->open_mutex);
- wake_up(&hwdep->open_wait);
-#ifdef CONFIG_SND_OSSEMUL
- if (hwdep->ossreg)
- snd_unregister_oss_device(hwdep->oss_type, hwdep->card, hwdep->device);
-#endif
- snd_unregister_device(SNDRV_DEVICE_TYPE_HWDEP, hwdep->card, hwdep->device);
- list_del_init(&hwdep->list);
- mutex_unlock(&hwdep->open_mutex);
- mutex_unlock(&register_mutex);
- return 0;
-}
-
-#ifdef CONFIG_PROC_FS
-/*
- * Info interface
- */
-
-static void snd_hwdep_proc_read(struct snd_info_entry *entry,
- struct snd_info_buffer *buffer)
-{
- struct snd_hwdep *hwdep;
-
- mutex_lock(&register_mutex);
- list_for_each_entry(hwdep, &snd_hwdep_devices, list)
- snd_iprintf(buffer, "%02i-%02i: %s\n",
- hwdep->card->number, hwdep->device, hwdep->name);
- mutex_unlock(&register_mutex);
-}
-
-static struct snd_info_entry *snd_hwdep_proc_entry;
-
-static void __init snd_hwdep_proc_init(void)
-{
- struct snd_info_entry *entry;
-
- if ((entry = snd_info_create_module_entry(THIS_MODULE, "hwdep", NULL)) != NULL) {
- entry->c.text.read = snd_hwdep_proc_read;
- if (snd_info_register(entry) < 0) {
- snd_info_free_entry(entry);
- entry = NULL;
- }
- }
- snd_hwdep_proc_entry = entry;
-}
-
-static void __exit snd_hwdep_proc_done(void)
-{
- snd_info_free_entry(snd_hwdep_proc_entry);
-}
-#else /* !CONFIG_PROC_FS */
-#define snd_hwdep_proc_init()
-#define snd_hwdep_proc_done()
-#endif /* CONFIG_PROC_FS */
-
-
-/*
- * ENTRY functions
- */
-
-static int __init alsa_hwdep_init(void)
-{
- snd_hwdep_proc_init();
- snd_ctl_register_ioctl(snd_hwdep_control_ioctl);
- snd_ctl_register_ioctl_compat(snd_hwdep_control_ioctl);
- return 0;
-}
-
-static void __exit alsa_hwdep_exit(void)
-{
- snd_ctl_unregister_ioctl(snd_hwdep_control_ioctl);
- snd_ctl_unregister_ioctl_compat(snd_hwdep_control_ioctl);
- snd_hwdep_proc_done();
-}
-
-module_init(alsa_hwdep_init)
-module_exit(alsa_hwdep_exit)
-
-EXPORT_SYMBOL(snd_hwdep_new);
generated by cgit (git 2.34.1) at 2025-06-06 08:55:49 +0000