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249 lines
6.4 KiB
249 lines
6.4 KiB
// 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 <[email protected]> |
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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 > US428_SHAREDMEM_PAGES) { |
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snd_printd("%lu > %lu\n", size, (unsigned long)US428_SHAREDMEM_PAGES); |
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return -EINVAL; |
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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 && shm->ctl_snapshot_last != shm->ctl_snapshot_red) |
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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 const char * const 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 (id < 0) |
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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 const 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 const 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 const 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 const 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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const 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("%s\n", __func__); |
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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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err = usx2y_create_usbmidi(card); |
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if (err < 0) { |
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snd_printk(KERN_ERR "%s: usx2y_create_usbmidi error %i\n", __func__, err); |
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return err; |
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} |
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err = usx2y_audio_create(card); |
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if (err < 0) |
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return err; |
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err = usx2y_hwdep_pcm_new(card); |
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if (err < 0) |
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return err; |
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err = snd_card_register(card); |
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if (err < 0) |
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return err; |
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return 0; |
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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_async_seq04_init(priv); |
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if (err) { |
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snd_printk(KERN_ERR "usx2y_async_seq04_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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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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struct usx2ydev *us428 = usx2y(card); |
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err = snd_hwdep_new(card, SND_USX2Y_LOADER_ID, 0, &hw); |
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if (err < 0) |
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return err; |
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hw->iface = SNDRV_HWDEP_IFACE_USX2Y; |
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hw->private_data = us428; |
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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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us428->us428ctls_sharedmem = alloc_pages_exact(US428_SHAREDMEM_PAGES, 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, US428_SHAREDMEM_PAGES); |
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us428->us428ctls_sharedmem->ctl_snapshot_last = -2; |
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return 0; |
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}
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