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 bool disconnected; 27 }; 28 29 #define MAX_CHANNELS 16 /* max logical channels */ 30 31 enum { 32 USB_MIXER_BOOLEAN, 33 USB_MIXER_INV_BOOLEAN, 34 USB_MIXER_S8, 35 USB_MIXER_U8, 36 USB_MIXER_S16, 37 USB_MIXER_U16, 38 USB_MIXER_S32, 39 USB_MIXER_U32, 40 }; 41 42 typedef void (*usb_mixer_elem_dump_func_t)(struct snd_info_buffer *buffer, 43 struct usb_mixer_elem_list *list); 44 typedef int (*usb_mixer_elem_resume_func_t)(struct usb_mixer_elem_list *elem); 45 46 struct usb_mixer_elem_list { 47 struct usb_mixer_interface *mixer; 48 struct usb_mixer_elem_list *next_id_elem; /* list of controls with same id */ 49 struct snd_kcontrol *kctl; 50 unsigned int id; 51 usb_mixer_elem_dump_func_t dump; 52 usb_mixer_elem_resume_func_t resume; 53 }; 54 55 struct usb_mixer_elem_info { 56 struct usb_mixer_elem_list head; 57 unsigned int control; /* CS or ICN (high byte) */ 58 unsigned int cmask; /* channel mask bitmap: 0 = master */ 59 unsigned int idx_off; /* Control index offset */ 60 unsigned int ch_readonly; 61 unsigned int master_readonly; 62 int channels; 63 int val_type; 64 int min, max, res; 65 int dBmin, dBmax; 66 int cached; 67 int cache_val[MAX_CHANNELS]; 68 u8 initialized; 69 u8 min_mute; 70 void *private_data; 71 }; 72 73 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif, 74 int ignore_error); 75 void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer); 76 77 void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid); 78 79 int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval, 80 int request, int validx, int value_set); 81 82 int snd_usb_mixer_add_control(struct usb_mixer_elem_list *list, 83 struct snd_kcontrol *kctl); 84 85 void snd_usb_mixer_elem_init_std(struct usb_mixer_elem_list *list, 86 struct usb_mixer_interface *mixer, 87 int unitid); 88 89 int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag, 90 unsigned int size, unsigned int __user *_tlv); 91 92 #ifdef CONFIG_PM 93 int snd_usb_mixer_suspend(struct usb_mixer_interface *mixer); 94 int snd_usb_mixer_resume(struct usb_mixer_interface *mixer, bool reset_resume); 95 #endif 96 97 int snd_usb_set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel, 98 int index, int value); 99 100 int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval, 101 int channel, int index, int *value); 102 103 extern void snd_usb_mixer_elem_free(struct snd_kcontrol *kctl); 104 105 #endif /* __USBMIXER_H */ 106