From 9d19f48cfe2570562c2c6226780a7ca627b0f1f1 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Wed, 6 Sep 2006 14:27:46 +0200 Subject: [ALSA] Add pcm_class attribute to PCM sysfs entry This patch adds a new attribute, pcm_class, to each PCM sysfs entry. It's useful to detect what kind of PCM stream is, for example, HAL can check whether it's a modem or not. Signed-off-by: Takashi Iwai Signed-off-by: Jaroslav Kysela --- include/sound/core.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/sound') diff --git a/include/sound/core.h b/include/sound/core.h index 1359c532b68..b056ea925ec 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -26,6 +26,7 @@ #include /* struct mutex */ #include /* struct rw_semaphore */ #include /* pm_message_t */ +#include /* forward declarations */ #ifdef CONFIG_PCI @@ -186,6 +187,7 @@ struct snd_minor { int device; /* device number */ const struct file_operations *f_ops; /* file operations */ void *private_data; /* private data for f_ops->open */ + struct class_device *class_dev; /* class device for sysfs */ }; /* sound.c */ @@ -200,6 +202,8 @@ int snd_register_device(int type, struct snd_card *card, int dev, const char *name); int snd_unregister_device(int type, struct snd_card *card, int dev); void *snd_lookup_minor_data(unsigned int minor, int type); +int snd_add_device_sysfs_file(int type, struct snd_card *card, int dev, + const struct class_device_attribute *attr); #ifdef CONFIG_SND_OSSEMUL int snd_register_oss_device(int type, struct snd_card *card, int dev, -- cgit v1.2.3