171 lines
4.3 KiB
C
171 lines
4.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
// Copyright (c) 2025 Šerif Rami <ramiserifpersia@gmail.com>
|
|
|
|
#ifndef __US144MKII_H
|
|
#define __US144MKII_H
|
|
|
|
#include <linux/timer.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/workqueue.h>
|
|
#include <sound/core.h>
|
|
#include <sound/initval.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/rawmidi.h>
|
|
|
|
#define DRIVER_NAME "us144mkii"
|
|
|
|
/* --- USB Device Identification --- */
|
|
#define USB_VID_TASCAM 0x0644
|
|
#define USB_PID_TASCAM_US144 0x800f
|
|
#define USB_PID_TASCAM_US144MKII 0x8020
|
|
|
|
/* --- USB Endpoints --- */
|
|
#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_DEEP_SLEEP = 0x44,
|
|
VENDOR_REQ_MODE_CONTROL = 0x49,
|
|
};
|
|
|
|
enum tascam_mode_value {
|
|
MODE_VAL_HANDSHAKE_READ = 0x0000,
|
|
MODE_VAL_CONFIG = 0x0010,
|
|
MODE_VAL_STREAM_START = 0x0030,
|
|
};
|
|
|
|
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 2
|
|
#define NUM_FEEDBACK_URBS 2
|
|
#define FEEDBACK_URB_PACKETS 1
|
|
#define FEEDBACK_PACKET_SIZE 3
|
|
#define NUM_CAPTURE_URBS 4
|
|
#define CAPTURE_PACKET_SIZE 512
|
|
|
|
/* --- MIDI Configuration --- */
|
|
#define MIDI_PACKET_SIZE 9
|
|
#define MIDI_PAYLOAD_SIZE 8
|
|
|
|
/* --- Audio Format Configuration --- */
|
|
#define BYTES_PER_SAMPLE 3
|
|
#define NUM_CHANNELS 4
|
|
#define BYTES_PER_FRAME (NUM_CHANNELS * BYTES_PER_SAMPLE)
|
|
|
|
/* --- PLL Config --- */
|
|
#define PLL_FILTER_OLD_WEIGHT 3
|
|
#define PLL_FILTER_NEW_WEIGHT 1
|
|
#define PLL_FILTER_DIVISOR (PLL_FILTER_OLD_WEIGHT + PLL_FILTER_NEW_WEIGHT)
|
|
|
|
#define USB_CTRL_TIMEOUT_MS 1000
|
|
|
|
/**
|
|
* struct tascam_card - Main driver data structure for the TASCAM US-144MKII.
|
|
*/
|
|
struct tascam_card {
|
|
/* --- Core device pointers --- */
|
|
struct usb_device *dev;
|
|
struct usb_interface *iface0;
|
|
struct snd_card *card;
|
|
struct snd_pcm *pcm;
|
|
struct snd_rawmidi *rmidi;
|
|
|
|
/* --- PCM Substreams --- */
|
|
struct snd_pcm_substream *playback_substream;
|
|
struct snd_pcm_substream *capture_substream;
|
|
|
|
/* --- Audio URBs and Anchors --- */
|
|
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;
|
|
struct urb *capture_urbs[NUM_CAPTURE_URBS];
|
|
|
|
struct usb_anchor playback_anchor;
|
|
struct usb_anchor feedback_anchor;
|
|
struct usb_anchor capture_anchor;
|
|
|
|
/* --- MIDI State --- */
|
|
struct snd_rawmidi_substream *midi_input;
|
|
struct snd_rawmidi_substream *midi_output;
|
|
struct urb *midi_in_urb;
|
|
struct urb *midi_out_urb;
|
|
u8 *midi_in_buf;
|
|
u8 *midi_out_buf;
|
|
struct usb_anchor midi_anchor;
|
|
bool midi_out_active;
|
|
spinlock_t midi_lock;
|
|
|
|
/* --- Stream State --- */
|
|
spinlock_t lock;
|
|
atomic_t playback_active;
|
|
atomic_t capture_active;
|
|
atomic_t active_urbs;
|
|
int current_rate;
|
|
|
|
/* --- Playback Positions --- */
|
|
u64 playback_frames_consumed;
|
|
snd_pcm_uframes_t driver_playback_pos;
|
|
u64 last_pb_period_pos;
|
|
|
|
/* --- Capture Positions --- */
|
|
u64 capture_frames_processed;
|
|
snd_pcm_uframes_t driver_capture_pos;
|
|
u64 last_cap_period_pos;
|
|
|
|
/* --- PLL / Feedback State --- */
|
|
u32 phase_accum;
|
|
u32 freq_q16;
|
|
bool feedback_synced;
|
|
unsigned int feedback_urb_skip_count;
|
|
|
|
/* --- Workqueues --- */
|
|
struct work_struct stop_work;
|
|
struct work_struct stop_pcm_work;
|
|
};
|
|
|
|
/* main.c */
|
|
void tascam_free_urbs(struct tascam_card *tascam);
|
|
int tascam_alloc_urbs(struct tascam_card *tascam);
|
|
void tascam_stop_work_handler(struct work_struct *work);
|
|
|
|
/* us144mkii_pcm.h */
|
|
#include "us144mkii_pcm.h"
|
|
|
|
/* us144mkii_midi.c */
|
|
int tascam_create_midi(struct tascam_card *tascam);
|
|
|
|
#endif /* __US144MKII_H */
|