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author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
commit | 57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch) | |
tree | 5e910f0e82173f4ef4f51111366a3f1299037a7b /sound/usb/mixer.h |
Initial import
Diffstat (limited to 'sound/usb/mixer.h')
-rw-r--r-- | sound/usb/mixer.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/sound/usb/mixer.h b/sound/usb/mixer.h new file mode 100644 index 000000000..d3268f0ee --- /dev/null +++ b/sound/usb/mixer.h @@ -0,0 +1,100 @@ +#ifndef __USBMIXER_H +#define __USBMIXER_H + +#include <sound/info.h> + +struct usb_mixer_interface { + struct snd_usb_audio *chip; + struct usb_host_interface *hostif; + struct list_head list; + unsigned int ignore_ctl_error; + struct urb *urb; + /* array[MAX_ID_ELEMS], indexed by unit id */ + struct usb_mixer_elem_list **id_elems; + + /* the usb audio specification version this interface complies to */ + int protocol; + + /* Sound Blaster remote control stuff */ + const struct rc_config *rc_cfg; + u32 rc_code; + wait_queue_head_t rc_waitq; + struct urb *rc_urb; + struct usb_ctrlrequest *rc_setup_packet; + u8 rc_buffer[6]; +}; + +#define MAX_CHANNELS 16 /* max logical channels */ + +enum { + USB_MIXER_BOOLEAN, + USB_MIXER_INV_BOOLEAN, + USB_MIXER_S8, + USB_MIXER_U8, + USB_MIXER_S16, + USB_MIXER_U16, +}; + +typedef void (*usb_mixer_elem_dump_func_t)(struct snd_info_buffer *buffer, + struct usb_mixer_elem_list *list); +typedef int (*usb_mixer_elem_resume_func_t)(struct usb_mixer_elem_list *elem); + +struct usb_mixer_elem_list { + struct usb_mixer_interface *mixer; + struct usb_mixer_elem_list *next_id_elem; /* list of controls with same id */ + struct snd_kcontrol *kctl; + unsigned int id; + usb_mixer_elem_dump_func_t dump; + usb_mixer_elem_resume_func_t resume; +}; + +struct usb_mixer_elem_info { + struct usb_mixer_elem_list head; + unsigned int control; /* CS or ICN (high byte) */ + unsigned int cmask; /* channel mask bitmap: 0 = master */ + unsigned int idx_off; /* Control index offset */ + unsigned int ch_readonly; + unsigned int master_readonly; + int channels; + int val_type; + int min, max, res; + int dBmin, dBmax; + int cached; + int cache_val[MAX_CHANNELS]; + u8 initialized; + void *private_data; +}; + +int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif, + int ignore_error); +void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer); + +void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid); + +int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval, + int request, int validx, int value_set); + +int snd_usb_mixer_add_control(struct usb_mixer_elem_list *list, + struct snd_kcontrol *kctl); + +void snd_usb_mixer_elem_init_std(struct usb_mixer_elem_list *list, + struct usb_mixer_interface *mixer, + int unitid); + +int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag, + unsigned int size, unsigned int __user *_tlv); + +#ifdef CONFIG_PM +int snd_usb_mixer_suspend(struct usb_mixer_interface *mixer); +int snd_usb_mixer_resume(struct usb_mixer_interface *mixer, bool reset_resume); +#endif + +int snd_usb_set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel, + int index, int value); + +int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval, + int channel, int index, int *value); + +extern void snd_usb_mixer_elem_free(struct snd_kcontrol *kctl); + +#endif /* __USBMIXER_H */ |