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- #ifndef __SOUND_CONTROL_H
- #define __SOUND_CONTROL_H
- #include <linux/nospec.h>
- #include <sound/asound.h>
- #define snd_kcontrol_chip(kcontrol) ((kcontrol)->private_data)
- struct snd_kcontrol;
- typedef int (snd_kcontrol_info_t) (struct snd_kcontrol * kcontrol, struct snd_ctl_elem_info * uinfo);
- typedef int (snd_kcontrol_get_t) (struct snd_kcontrol * kcontrol, struct snd_ctl_elem_value * ucontrol);
- typedef int (snd_kcontrol_put_t) (struct snd_kcontrol * kcontrol, struct snd_ctl_elem_value * ucontrol);
- typedef int (snd_kcontrol_tlv_rw_t)(struct snd_kcontrol *kcontrol,
- int op_flag,
- unsigned int size,
- unsigned int __user *tlv);
- enum {
- SNDRV_CTL_TLV_OP_READ = 0,
- SNDRV_CTL_TLV_OP_WRITE = 1,
- SNDRV_CTL_TLV_OP_CMD = -1,
- };
- struct snd_kcontrol_new {
- snd_ctl_elem_iface_t iface;
- unsigned int device;
- unsigned int subdevice;
- const unsigned char *name;
- unsigned int index;
- unsigned int access;
- unsigned int count;
- snd_kcontrol_info_t *info;
- snd_kcontrol_get_t *get;
- snd_kcontrol_put_t *put;
- union {
- snd_kcontrol_tlv_rw_t *c;
- const unsigned int *p;
- } tlv;
- unsigned long private_value;
- };
- struct snd_kcontrol_volatile {
- struct snd_ctl_file *owner;
- unsigned int access;
- };
- struct snd_kcontrol {
- struct list_head list;
- struct snd_ctl_elem_id id;
- unsigned int count;
- snd_kcontrol_info_t *info;
- snd_kcontrol_get_t *get;
- snd_kcontrol_put_t *put;
- union {
- snd_kcontrol_tlv_rw_t *c;
- const unsigned int *p;
- } tlv;
- unsigned long private_value;
- void *private_data;
- void (*private_free)(struct snd_kcontrol *kcontrol);
- struct snd_kcontrol_volatile vd[0];
- };
- #define snd_kcontrol(n) list_entry(n, struct snd_kcontrol, list)
- struct snd_kctl_event {
- struct list_head list;
- struct snd_ctl_elem_id id;
- unsigned int mask;
- };
- #define snd_kctl_event(n) list_entry(n, struct snd_kctl_event, list)
- struct pid;
- enum {
- SND_CTL_SUBDEV_PCM,
- SND_CTL_SUBDEV_RAWMIDI,
- SND_CTL_SUBDEV_ITEMS,
- };
- struct snd_ctl_file {
- struct list_head list;
- struct snd_card *card;
- struct pid *pid;
- int preferred_subdevice[SND_CTL_SUBDEV_ITEMS];
- wait_queue_head_t change_sleep;
- spinlock_t read_lock;
- struct fasync_struct *fasync;
- int subscribed;
- struct list_head events;
- };
- #define snd_ctl_file(n) list_entry(n, struct snd_ctl_file, list)
- typedef int (*snd_kctl_ioctl_func_t) (struct snd_card * card,
- struct snd_ctl_file * control,
- unsigned int cmd, unsigned long arg);
- void snd_ctl_notify(struct snd_card * card, unsigned int mask, struct snd_ctl_elem_id * id);
- struct snd_kcontrol *snd_ctl_new1(const struct snd_kcontrol_new * kcontrolnew, void * private_data);
- void snd_ctl_free_one(struct snd_kcontrol * kcontrol);
- int snd_ctl_add(struct snd_card * card, struct snd_kcontrol * kcontrol);
- int snd_ctl_remove(struct snd_card * card, struct snd_kcontrol * kcontrol);
- int snd_ctl_replace(struct snd_card *card, struct snd_kcontrol *kcontrol, bool add_on_replace);
- int snd_ctl_remove_id(struct snd_card * card, struct snd_ctl_elem_id *id);
- int snd_ctl_rename_id(struct snd_card * card, struct snd_ctl_elem_id *src_id, struct snd_ctl_elem_id *dst_id);
- int snd_ctl_activate_id(struct snd_card *card, struct snd_ctl_elem_id *id,
- int active);
- struct snd_kcontrol *snd_ctl_find_numid(struct snd_card * card, unsigned int numid);
- struct snd_kcontrol *snd_ctl_find_id(struct snd_card * card, struct snd_ctl_elem_id *id);
- int snd_ctl_create(struct snd_card *card);
- int snd_ctl_register_ioctl(snd_kctl_ioctl_func_t fcn);
- int snd_ctl_unregister_ioctl(snd_kctl_ioctl_func_t fcn);
- #ifdef CONFIG_COMPAT
- int snd_ctl_register_ioctl_compat(snd_kctl_ioctl_func_t fcn);
- int snd_ctl_unregister_ioctl_compat(snd_kctl_ioctl_func_t fcn);
- #else
- #define snd_ctl_register_ioctl_compat(fcn)
- #define snd_ctl_unregister_ioctl_compat(fcn)
- #endif
- int snd_ctl_get_preferred_subdevice(struct snd_card *card, int type);
- static inline unsigned int snd_ctl_get_ioffnum(struct snd_kcontrol *kctl, struct snd_ctl_elem_id *id)
- {
- unsigned int ioff = id->numid - kctl->id.numid;
- return array_index_nospec(ioff, kctl->count);
- }
- static inline unsigned int snd_ctl_get_ioffidx(struct snd_kcontrol *kctl, struct snd_ctl_elem_id *id)
- {
- unsigned int ioff = id->index - kctl->id.index;
- return array_index_nospec(ioff, kctl->count);
- }
- static inline unsigned int snd_ctl_get_ioff(struct snd_kcontrol *kctl, struct snd_ctl_elem_id *id)
- {
- if (id->numid) {
- return snd_ctl_get_ioffnum(kctl, id);
- } else {
- return snd_ctl_get_ioffidx(kctl, id);
- }
- }
- static inline struct snd_ctl_elem_id *snd_ctl_build_ioff(struct snd_ctl_elem_id *dst_id,
- struct snd_kcontrol *src_kctl,
- unsigned int offset)
- {
- *dst_id = src_kctl->id;
- dst_id->index += offset;
- dst_id->numid += offset;
- return dst_id;
- }
- int snd_ctl_boolean_mono_info(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_info *uinfo);
- int snd_ctl_boolean_stereo_info(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_info *uinfo);
- int snd_ctl_enum_info(struct snd_ctl_elem_info *info, unsigned int channels,
- unsigned int items, const char *const names[]);
- struct snd_kcontrol *snd_ctl_make_virtual_master(char *name,
- const unsigned int *tlv);
- int _snd_ctl_add_slave(struct snd_kcontrol *master, struct snd_kcontrol *slave,
- unsigned int flags);
- #define SND_CTL_SLAVE_NEED_UPDATE (1 << 0)
- static inline int
- snd_ctl_add_slave(struct snd_kcontrol *master, struct snd_kcontrol *slave)
- {
- return _snd_ctl_add_slave(master, slave, 0);
- }
- static inline int
- snd_ctl_add_slave_uncached(struct snd_kcontrol *master,
- struct snd_kcontrol *slave)
- {
- return _snd_ctl_add_slave(master, slave, SND_CTL_SLAVE_NEED_UPDATE);
- }
- int snd_ctl_add_vmaster_hook(struct snd_kcontrol *kctl,
- void (*hook)(void *private_data, int),
- void *private_data);
- void snd_ctl_sync_vmaster(struct snd_kcontrol *kctl, bool hook_only);
- #define snd_ctl_sync_vmaster_hook(kctl) snd_ctl_sync_vmaster(kctl, true)
- struct snd_kcontrol *
- snd_kctl_jack_new(const char *name, struct snd_card *card);
- void snd_kctl_jack_report(struct snd_card *card,
- struct snd_kcontrol *kctl, bool status);
- #endif
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