251 lines
6.6 KiB
C
251 lines
6.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Driver for Tascam US-X2Y USB soundcards
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*
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* FPGA Loader + ALSA Startup
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*
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* Copyright (c) 2003 by Karsten Wiese <annabellesgarden@yahoo.de>
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*/
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#include <linux/interrupt.h>
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#include <linux/slab.h>
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#include <linux/usb.h>
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#include <sound/core.h>
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#include <sound/memalloc.h>
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#include <sound/pcm.h>
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#include <sound/hwdep.h>
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#include "usx2y.h"
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#include "usbusx2y.h"
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#include "usX2Yhwdep.h"
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static vm_fault_t snd_us428ctls_vm_fault(struct vm_fault *vmf)
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{
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unsigned long offset;
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struct page * page;
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void *vaddr;
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snd_printdd("ENTER, start %lXh, pgoff %ld\n",
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vmf->vma->vm_start,
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vmf->pgoff);
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offset = vmf->pgoff << PAGE_SHIFT;
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vaddr = (char *)((struct usX2Ydev *)vmf->vma->vm_private_data)->us428ctls_sharedmem + offset;
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page = virt_to_page(vaddr);
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get_page(page);
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vmf->page = page;
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snd_printdd("vaddr=%p made us428ctls_vm_fault() page %p\n",
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vaddr, page);
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return 0;
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}
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static const struct vm_operations_struct us428ctls_vm_ops = {
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.fault = snd_us428ctls_vm_fault,
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};
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static int snd_us428ctls_mmap(struct snd_hwdep * hw, struct file *filp, struct vm_area_struct *area)
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{
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unsigned long size = (unsigned long)(area->vm_end - area->vm_start);
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struct usX2Ydev *us428 = hw->private_data;
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// FIXME this hwdep interface is used twice: fpga download and mmap for controlling Lights etc. Maybe better using 2 hwdep devs?
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// so as long as the device isn't fully initialised yet we return -EBUSY here.
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if (!(us428->chip_status & USX2Y_STAT_CHIP_INIT))
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return -EBUSY;
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/* if userspace tries to mmap beyond end of our buffer, fail */
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if (size > PAGE_ALIGN(sizeof(struct us428ctls_sharedmem))) {
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snd_printd( "%lu > %lu\n", size, (unsigned long)sizeof(struct us428ctls_sharedmem));
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return -EINVAL;
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}
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if (!us428->us428ctls_sharedmem) {
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init_waitqueue_head(&us428->us428ctls_wait_queue_head);
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us428->us428ctls_sharedmem = alloc_pages_exact(sizeof(struct us428ctls_sharedmem), GFP_KERNEL);
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if (!us428->us428ctls_sharedmem)
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return -ENOMEM;
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memset(us428->us428ctls_sharedmem, -1, sizeof(struct us428ctls_sharedmem));
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us428->us428ctls_sharedmem->CtlSnapShotLast = -2;
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}
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area->vm_ops = &us428ctls_vm_ops;
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area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
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area->vm_private_data = hw->private_data;
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return 0;
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}
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static __poll_t snd_us428ctls_poll(struct snd_hwdep *hw, struct file *file, poll_table *wait)
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{
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__poll_t mask = 0;
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struct usX2Ydev *us428 = hw->private_data;
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struct us428ctls_sharedmem *shm = us428->us428ctls_sharedmem;
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if (us428->chip_status & USX2Y_STAT_CHIP_HUP)
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return EPOLLHUP;
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poll_wait(file, &us428->us428ctls_wait_queue_head, wait);
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if (shm != NULL && shm->CtlSnapShotLast != shm->CtlSnapShotRed)
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mask |= EPOLLIN;
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return mask;
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}
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static int snd_usX2Y_hwdep_dsp_status(struct snd_hwdep *hw,
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struct snd_hwdep_dsp_status *info)
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{
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static char *type_ids[USX2Y_TYPE_NUMS] = {
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[USX2Y_TYPE_122] = "us122",
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[USX2Y_TYPE_224] = "us224",
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[USX2Y_TYPE_428] = "us428",
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};
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struct usX2Ydev *us428 = hw->private_data;
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int id = -1;
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switch (le16_to_cpu(us428->dev->descriptor.idProduct)) {
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case USB_ID_US122:
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id = USX2Y_TYPE_122;
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break;
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case USB_ID_US224:
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id = USX2Y_TYPE_224;
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break;
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case USB_ID_US428:
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id = USX2Y_TYPE_428;
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break;
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}
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if (0 > id)
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return -ENODEV;
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strcpy(info->id, type_ids[id]);
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info->num_dsps = 2; // 0: Prepad Data, 1: FPGA Code
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if (us428->chip_status & USX2Y_STAT_CHIP_INIT)
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info->chip_ready = 1;
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info->version = USX2Y_DRIVER_VERSION;
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return 0;
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}
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static int usX2Y_create_usbmidi(struct snd_card *card)
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{
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static struct snd_usb_midi_endpoint_info quirk_data_1 = {
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.out_ep = 0x06,
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.in_ep = 0x06,
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.out_cables = 0x001,
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.in_cables = 0x001
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};
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static struct snd_usb_audio_quirk quirk_1 = {
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.vendor_name = "TASCAM",
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.product_name = NAME_ALLCAPS,
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.ifnum = 0,
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.type = QUIRK_MIDI_FIXED_ENDPOINT,
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.data = &quirk_data_1
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};
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static struct snd_usb_midi_endpoint_info quirk_data_2 = {
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.out_ep = 0x06,
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.in_ep = 0x06,
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.out_cables = 0x003,
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.in_cables = 0x003
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};
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static struct snd_usb_audio_quirk quirk_2 = {
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.vendor_name = "TASCAM",
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.product_name = "US428",
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.ifnum = 0,
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.type = QUIRK_MIDI_FIXED_ENDPOINT,
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.data = &quirk_data_2
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};
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struct usb_device *dev = usX2Y(card)->dev;
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struct usb_interface *iface = usb_ifnum_to_if(dev, 0);
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struct snd_usb_audio_quirk *quirk =
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le16_to_cpu(dev->descriptor.idProduct) == USB_ID_US428 ?
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&quirk_2 : &quirk_1;
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snd_printdd("usX2Y_create_usbmidi \n");
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return snd_usbmidi_create(card, iface, &usX2Y(card)->midi_list, quirk);
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}
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static int usX2Y_create_alsa_devices(struct snd_card *card)
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{
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int err;
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do {
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if ((err = usX2Y_create_usbmidi(card)) < 0) {
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snd_printk(KERN_ERR "usX2Y_create_alsa_devices: usX2Y_create_usbmidi error %i \n", err);
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break;
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}
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if ((err = usX2Y_audio_create(card)) < 0)
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break;
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if ((err = usX2Y_hwdep_pcm_new(card)) < 0)
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break;
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if ((err = snd_card_register(card)) < 0)
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break;
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} while (0);
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return err;
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}
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static int snd_usX2Y_hwdep_dsp_load(struct snd_hwdep *hw,
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struct snd_hwdep_dsp_image *dsp)
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{
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struct usX2Ydev *priv = hw->private_data;
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struct usb_device* dev = priv->dev;
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int lret, err;
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char *buf;
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snd_printdd( "dsp_load %s\n", dsp->name);
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buf = memdup_user(dsp->image, dsp->length);
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if (IS_ERR(buf))
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return PTR_ERR(buf);
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err = usb_set_interface(dev, 0, 1);
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if (err)
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snd_printk(KERN_ERR "usb_set_interface error \n");
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else
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err = usb_bulk_msg(dev, usb_sndbulkpipe(dev, 2), buf, dsp->length, &lret, 6000);
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kfree(buf);
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if (err)
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return err;
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if (dsp->index == 1) {
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msleep(250); // give the device some time
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err = usX2Y_AsyncSeq04_init(priv);
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if (err) {
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snd_printk(KERN_ERR "usX2Y_AsyncSeq04_init error \n");
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return err;
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}
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err = usX2Y_In04_init(priv);
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if (err) {
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snd_printk(KERN_ERR "usX2Y_In04_init error \n");
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return err;
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}
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err = usX2Y_create_alsa_devices(hw->card);
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if (err) {
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snd_printk(KERN_ERR "usX2Y_create_alsa_devices error %i \n", err);
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snd_card_free(hw->card);
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return err;
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}
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priv->chip_status |= USX2Y_STAT_CHIP_INIT;
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snd_printdd("%s: alsa all started\n", hw->name);
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}
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return err;
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}
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int usX2Y_hwdep_new(struct snd_card *card, struct usb_device* device)
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{
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int err;
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struct snd_hwdep *hw;
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if ((err = snd_hwdep_new(card, SND_USX2Y_LOADER_ID, 0, &hw)) < 0)
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return err;
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hw->iface = SNDRV_HWDEP_IFACE_USX2Y;
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hw->private_data = usX2Y(card);
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hw->ops.dsp_status = snd_usX2Y_hwdep_dsp_status;
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hw->ops.dsp_load = snd_usX2Y_hwdep_dsp_load;
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hw->ops.mmap = snd_us428ctls_mmap;
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hw->ops.poll = snd_us428ctls_poll;
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hw->exclusive = 1;
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sprintf(hw->name, "/dev/bus/usb/%03d/%03d", device->bus->busnum, device->devnum);
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return 0;
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}
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