Exemplos de snd_hwdep_search em C++ (Cpp)

Exemplo n.º 1

Arquivo: hwdep.c Projeto: Nothing-Dev/android_kernel_lge_jagnm_lp

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;
}

Exemplo n.º 2

Arquivo: hwdep.c Projeto: Nothing-Dev/android_kernel_lge_jagnm_lp

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;
}

Exemplo n.º 3

Arquivo: hwdep.c Projeto: 458941968/mini2440-kernel-2.6.29

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;
	}
#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(&register_mutex);
	return 0;
}

Exemplo n.º 4

Arquivo: hwdep.c Projeto: Abioy/kasan

static int snd_hwdep_dev_register(struct snd_device *device)
{
	struct snd_hwdep *hwdep = device->device_data;
	struct snd_card *card = hwdep->card;
	int err;

	mutex_lock(&register_mutex);
	if (snd_hwdep_search(card, hwdep->device)) {
		mutex_unlock(&register_mutex);
		return -EBUSY;
	}
	list_add_tail(&hwdep->list, &snd_hwdep_devices);
	err = snd_register_device(SNDRV_DEVICE_TYPE_HWDEP,
				  hwdep->card, hwdep->device,
				  &snd_hwdep_f_ops, hwdep, &hwdep->dev);
	if (err < 0) {
		dev_err(&hwdep->dev, "unable to register\n");
		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)
			dev_warn(&hwdep->dev,
				 "only hwdep device 0 can be registered as OSS direct FM device!\n");
		else if (snd_register_oss_device(hwdep->oss_type,
						 card, hwdep->device,
						 &snd_hwdep_f_ops, hwdep) < 0)
			dev_warn(&hwdep->dev,
				 "unable to register OSS compatibility device\n");
		else
			hwdep->ossreg = 1;
	}
#endif
	mutex_unlock(&register_mutex);
	return 0;
}