212 lines
6.5 KiB
C
212 lines
6.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
#ifndef __US144MKII_H
|
|
#define __US144MKII_H
|
|
|
|
#include <linux/usb.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/kfifo.h>
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/pcm_params.h>
|
|
#include <sound/rawmidi.h>
|
|
#include <sound/initval.h>
|
|
#include <sound/control.h>
|
|
|
|
#define DRIVER_NAME "snd-usb-us144mkii"
|
|
#define DRIVER_VERSION "1.7.4"
|
|
|
|
/* --- USB Device Identification --- */
|
|
#define USB_VID_TASCAM 0x0644
|
|
#define USB_PID_TASCAM_US144MKII 0x8020
|
|
|
|
/* --- USB Endpoints (Alternate Setting 1) --- */
|
|
#define EP_PLAYBACK_FEEDBACK 0x81
|
|
#define EP_AUDIO_OUT 0x02
|
|
#define EP_MIDI_IN 0x83
|
|
#define EP_MIDI_OUT 0x04
|
|
#define EP_AUDIO_IN 0x86
|
|
|
|
/* --- USB Control Message Protocol --- */
|
|
#define RT_H2D_CLASS_EP (USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT)
|
|
#define RT_D2H_CLASS_EP (USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_ENDPOINT)
|
|
#define RT_H2D_VENDOR_DEV (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE)
|
|
#define RT_D2H_VENDOR_DEV (USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE)
|
|
|
|
enum uac_request {
|
|
UAC_SET_CUR = 0x01,
|
|
UAC_GET_CUR = 0x81,
|
|
};
|
|
|
|
enum uac_control_selector {
|
|
UAC_SAMPLING_FREQ_CONTROL = 0x0100,
|
|
};
|
|
|
|
enum tascam_vendor_request {
|
|
VENDOR_REQ_REGISTER_WRITE = 0x41,
|
|
VENDOR_REQ_MODE_CONTROL = 0x49,
|
|
};
|
|
|
|
enum tascam_mode_value {
|
|
MODE_VAL_HANDSHAKE_READ = 0x0000,
|
|
MODE_VAL_CONFIG = 0x0010,
|
|
MODE_VAL_STREAM_START = 0x0030,
|
|
};
|
|
|
|
#define HANDSHAKE_SUCCESS_VAL 0x12
|
|
|
|
enum tascam_register {
|
|
REG_ADDR_UNKNOWN_0D = 0x0d04,
|
|
REG_ADDR_UNKNOWN_0E = 0x0e00,
|
|
REG_ADDR_UNKNOWN_0F = 0x0f00,
|
|
REG_ADDR_RATE_44100 = 0x1000,
|
|
REG_ADDR_RATE_48000 = 0x1002,
|
|
REG_ADDR_RATE_88200 = 0x1008,
|
|
REG_ADDR_RATE_96000 = 0x100a,
|
|
REG_ADDR_UNKNOWN_11 = 0x110b,
|
|
};
|
|
|
|
#define REG_VAL_ENABLE 0x0101
|
|
|
|
|
|
|
|
/* --- URB Configuration --- */
|
|
#define NUM_PLAYBACK_URBS 8
|
|
#define PLAYBACK_URB_PACKETS 4
|
|
#define NUM_FEEDBACK_URBS 4
|
|
#define MAX_FEEDBACK_PACKETS 5
|
|
#define FEEDBACK_PACKET_SIZE 3
|
|
#define NUM_CAPTURE_URBS 8
|
|
#define CAPTURE_URB_SIZE 512
|
|
#define CAPTURE_RING_BUFFER_SIZE (CAPTURE_URB_SIZE * NUM_CAPTURE_URBS * 4)
|
|
#define NUM_MIDI_IN_URBS 4
|
|
#define MIDI_IN_BUF_SIZE 64
|
|
#define MIDI_IN_FIFO_SIZE (MIDI_IN_BUF_SIZE * NUM_MIDI_IN_URBS)
|
|
#define MIDI_OUT_BUF_SIZE 64
|
|
#define NUM_MIDI_OUT_URBS 4
|
|
#define USB_CTRL_TIMEOUT_MS 1000
|
|
#define FEEDBACK_SYNC_LOSS_THRESHOLD 41
|
|
|
|
/* --- Audio Format Configuration --- */
|
|
#define BYTES_PER_SAMPLE 3
|
|
#define NUM_CHANNELS 4
|
|
#define BYTES_PER_FRAME (NUM_CHANNELS * BYTES_PER_SAMPLE)
|
|
#define FEEDBACK_ACCUMULATOR_SIZE 128
|
|
|
|
/* --- Capture Decoding Defines --- */
|
|
#define DECODED_CHANNELS_PER_FRAME 4
|
|
#define DECODED_SAMPLE_SIZE 4
|
|
#define FRAMES_PER_DECODE_BLOCK 8
|
|
#define RAW_BYTES_PER_DECODE_BLOCK 512
|
|
|
|
/* --- Main Driver Data Structure --- */
|
|
struct tascam_card {
|
|
struct usb_device *dev;
|
|
struct usb_interface *iface0;
|
|
struct usb_interface *iface1;
|
|
struct snd_card *card;
|
|
struct snd_pcm *pcm;
|
|
struct snd_rawmidi *rmidi;
|
|
|
|
/* Playback stream */
|
|
struct snd_pcm_substream *playback_substream;
|
|
struct urb *playback_urbs[NUM_PLAYBACK_URBS];
|
|
size_t playback_urb_alloc_size;
|
|
struct urb *feedback_urbs[NUM_FEEDBACK_URBS];
|
|
size_t feedback_urb_alloc_size;
|
|
atomic_t playback_active;
|
|
u64 playback_frames_consumed;
|
|
snd_pcm_uframes_t driver_playback_pos;
|
|
u64 last_period_pos;
|
|
u8 *playback_routing_buffer;
|
|
|
|
/* Capture stream */
|
|
struct snd_pcm_substream *capture_substream;
|
|
struct urb *capture_urbs[NUM_CAPTURE_URBS];
|
|
size_t capture_urb_alloc_size;
|
|
atomic_t capture_active;
|
|
snd_pcm_uframes_t driver_capture_pos;
|
|
u64 capture_frames_processed;
|
|
u64 last_capture_period_pos;
|
|
u8 *capture_ring_buffer;
|
|
size_t capture_ring_buffer_read_ptr;
|
|
size_t capture_ring_buffer_write_ptr;
|
|
u8 *capture_decode_raw_block;
|
|
s32 *capture_decode_dst_block;
|
|
s32 *capture_routing_buffer;
|
|
struct work_struct capture_work;
|
|
struct work_struct stop_work;
|
|
|
|
/* MIDI streams */
|
|
struct snd_rawmidi_substream *midi_in_substream;
|
|
struct snd_rawmidi_substream *midi_out_substream;
|
|
struct urb *midi_in_urbs[NUM_MIDI_IN_URBS];
|
|
atomic_t midi_in_active;
|
|
struct kfifo midi_in_fifo;
|
|
struct work_struct midi_in_work;
|
|
spinlock_t midi_in_lock;
|
|
struct urb *midi_out_urbs[NUM_MIDI_OUT_URBS];
|
|
atomic_t midi_out_active;
|
|
struct work_struct midi_out_work;
|
|
unsigned long midi_out_urbs_in_flight;
|
|
spinlock_t midi_out_lock;
|
|
u8 midi_running_status;
|
|
|
|
/* Shared state & Routing Matrix */
|
|
spinlock_t lock;
|
|
atomic_t active_urbs;
|
|
int current_rate;
|
|
unsigned int line_out_source; /* 0: Playback 1-2, 1: Playback 3-4 */
|
|
unsigned int digital_out_source; /* 0: Playback 1-2, 1: Playback 3-4 */
|
|
unsigned int capture_12_source; /* 0: Analog In, 1: Digital In */
|
|
unsigned int capture_34_source; /* 0: Analog In, 1: Digital In */
|
|
|
|
unsigned int feedback_accumulator_pattern[FEEDBACK_ACCUMULATOR_SIZE];
|
|
unsigned int feedback_pattern_out_idx;
|
|
unsigned int feedback_pattern_in_idx;
|
|
bool feedback_synced;
|
|
unsigned int feedback_consecutive_errors;
|
|
unsigned int feedback_urb_skip_count;
|
|
|
|
const unsigned int (*feedback_patterns)[8];
|
|
unsigned int feedback_base_value;
|
|
unsigned int feedback_max_value;
|
|
|
|
struct usb_anchor playback_anchor;
|
|
struct usb_anchor capture_anchor;
|
|
struct usb_anchor feedback_anchor;
|
|
struct usb_anchor midi_in_anchor;
|
|
struct usb_anchor midi_out_anchor;
|
|
};
|
|
|
|
/* from pcm.c */
|
|
extern const struct snd_pcm_ops tascam_playback_ops;
|
|
extern const struct snd_pcm_ops tascam_capture_ops;
|
|
int tascam_create_pcm(struct tascam_card *tascam);
|
|
void tascam_free_urbs(struct tascam_card *tascam);
|
|
int tascam_alloc_urbs(struct tascam_card *tascam);
|
|
int us144mkii_configure_device_for_rate(struct tascam_card *tascam, int rate);
|
|
void tascam_stop_work_handler(struct work_struct *work);
|
|
|
|
/* from playback.c */
|
|
void process_playback_routing_us144mkii(struct tascam_card *tascam, const u8 *src_buffer, u8 *dst_buffer, size_t frames);
|
|
void playback_urb_complete(struct urb *urb);
|
|
void feedback_urb_complete(struct urb *urb);
|
|
|
|
/* from capture.c */
|
|
void process_capture_routing_us144mkii(struct tascam_card *tascam, const s32 *decoded_block, s32 *routed_block);
|
|
void decode_tascam_capture_block(const u8 *src_block, s32 *dst_block);
|
|
void tascam_capture_work_handler(struct work_struct *work);
|
|
void capture_urb_complete(struct urb *urb);
|
|
|
|
/* from controls.c */
|
|
int tascam_create_controls(struct tascam_card *tascam);
|
|
|
|
/* from midi.c */
|
|
int tascam_create_midi(struct tascam_card *tascam);
|
|
void tascam_midi_in_work_handler(struct work_struct *work);
|
|
void tascam_midi_out_work_handler(struct work_struct *work);
|
|
void tascam_midi_in_urb_complete(struct urb *urb);
|
|
void tascam_midi_out_urb_complete(struct urb *urb);
|
|
|
|
#endif /* __US144MKII_H */
|