1 #ifndef __USBMIXER_H 2 #define __USBMIXER_H 3 4 #include <sound/info.h> 5 6 struct usb_mixer_interface { 7 struct snd_usb_audio *chip; 8 struct usb_host_interface *hostif; 9 struct list_head list; 10 unsigned int ignore_ctl_error; 11 struct urb *urb; 12 /* array[MAX_ID_ELEMS], indexed by unit id */ 13 struct usb_mixer_elem_list **id_elems; 14 15 /* the usb audio specification version this interface complies to */ 16 int protocol; 17 18 /* Sound Blaster remote control stuff */ 19 const struct rc_config *rc_cfg; 20 u32 rc_code; 21 wait_queue_head_t rc_waitq; 22 struct urb *rc_urb; 23 struct usb_ctrlrequest *rc_setup_packet; 24 u8 rc_buffer[6]; 25 }; 26 27 #define MAX_CHANNELS 16 /* max logical channels */ 28 29 enum { 30 USB_MIXER_BOOLEAN, 31 USB_MIXER_INV_BOOLEAN, 32 USB_MIXER_S8, 33 USB_MIXER_U8, 34 USB_MIXER_S16, 35 USB_MIXER_U16, 36 USB_MIXER_S32, 37 USB_MIXER_U32, 38 }; 39 40 typedef void (*usb_mixer_elem_dump_func_t)(struct snd_info_buffer *buffer, 41 struct usb_mixer_elem_list *list); 42 typedef int (*usb_mixer_elem_resume_func_t)(struct usb_mixer_elem_list *elem); 43 44 struct usb_mixer_elem_list { 45 struct usb_mixer_interface *mixer; 46 struct usb_mixer_elem_list *next_id_elem; /* list of controls with same id */ 47 struct snd_kcontrol *kctl; 48 unsigned int id; 49 usb_mixer_elem_dump_func_t dump; 50 usb_mixer_elem_resume_func_t resume; 51 }; 52 53 struct usb_mixer_elem_info { 54 struct usb_mixer_elem_list head; 55 unsigned int control; /* CS or ICN (high byte) */ 56 unsigned int cmask; /* channel mask bitmap: 0 = master */ 57 unsigned int idx_off; /* Control index offset */ 58 unsigned int ch_readonly; 59 unsigned int master_readonly; 60 int channels; 61 int val_type; 62 int min, max, res; 63 int dBmin, dBmax; 64 int cached; 65 int cache_val[MAX_CHANNELS]; 66 u8 initialized; 67 u8 min_mute; 68 void *private_data; 69 }; 70 71 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif, 72 int ignore_error); 73 void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer); 74 75 void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid); 76 77 int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval, 78 int request, int validx, int value_set); 79 80 int snd_usb_mixer_add_control(struct usb_mixer_elem_list *list, 81 struct snd_kcontrol *kctl); 82 83 void snd_usb_mixer_elem_init_std(struct usb_mixer_elem_list *list, 84 struct usb_mixer_interface *mixer, 85 int unitid); 86 87 int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag, 88 unsigned int size, unsigned int __user *_tlv); 89 90 #ifdef CONFIG_PM 91 int snd_usb_mixer_suspend(struct usb_mixer_interface *mixer); 92 int snd_usb_mixer_resume(struct usb_mixer_interface *mixer, bool reset_resume); 93 #endif 94 95 int snd_usb_set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel, 96 int index, int value); 97 98 int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval, 99 int channel, int index, int *value); 100 101 extern void snd_usb_mixer_elem_free(struct snd_kcontrol *kctl); 102 103 #endif /* __USBMIXER_H */ 104