diff options
Diffstat (limited to '')
| -rw-r--r-- | sound/usb/usx2y/usX2Yhwdep.c | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/sound/usb/usx2y/usX2Yhwdep.c b/sound/usb/usx2y/usX2Yhwdep.c new file mode 100644 index 000000000..c29da0341 --- /dev/null +++ b/sound/usb/usx2y/usX2Yhwdep.c @@ -0,0 +1,249 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Driver for Tascam US-X2Y USB soundcards + * + * FPGA Loader + ALSA Startup + * + * Copyright (c) 2003 by Karsten Wiese <annabellesgarden@yahoo.de> + */ + +#include <linux/interrupt.h> +#include <linux/slab.h> +#include <linux/usb.h> +#include <sound/core.h> +#include <sound/memalloc.h> +#include <sound/pcm.h> +#include <sound/hwdep.h> +#include "usx2y.h" +#include "usbusx2y.h" +#include "usX2Yhwdep.h" + +static vm_fault_t snd_us428ctls_vm_fault(struct vm_fault *vmf) +{ + unsigned long offset; + struct page *page; + void *vaddr; + + snd_printdd("ENTER, start %lXh, pgoff %ld\n", + vmf->vma->vm_start, + vmf->pgoff); + + offset = vmf->pgoff << PAGE_SHIFT; + vaddr = (char *)((struct usx2ydev *)vmf->vma->vm_private_data)->us428ctls_sharedmem + offset; + page = virt_to_page(vaddr); + get_page(page); + vmf->page = page; + + snd_printdd("vaddr=%p made us428ctls_vm_fault() page %p\n", + vaddr, page); + + return 0; +} + +static const struct vm_operations_struct us428ctls_vm_ops = { + .fault = snd_us428ctls_vm_fault, +}; + +static int snd_us428ctls_mmap(struct snd_hwdep *hw, struct file *filp, struct vm_area_struct *area) +{ + unsigned long size = (unsigned long)(area->vm_end - area->vm_start); + struct usx2ydev *us428 = hw->private_data; + + // FIXME this hwdep interface is used twice: fpga download and mmap for controlling Lights etc. Maybe better using 2 hwdep devs? + // so as long as the device isn't fully initialised yet we return -EBUSY here. + if (!(us428->chip_status & USX2Y_STAT_CHIP_INIT)) + return -EBUSY; + + /* if userspace tries to mmap beyond end of our buffer, fail */ + if (size > US428_SHAREDMEM_PAGES) { + snd_printd("%lu > %lu\n", size, (unsigned long)US428_SHAREDMEM_PAGES); + return -EINVAL; + } + + area->vm_ops = &us428ctls_vm_ops; + area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP; + area->vm_private_data = hw->private_data; + return 0; +} + +static __poll_t snd_us428ctls_poll(struct snd_hwdep *hw, struct file *file, poll_table *wait) +{ + __poll_t mask = 0; + struct usx2ydev *us428 = hw->private_data; + struct us428ctls_sharedmem *shm = us428->us428ctls_sharedmem; + + if (us428->chip_status & USX2Y_STAT_CHIP_HUP) + return EPOLLHUP; + + poll_wait(file, &us428->us428ctls_wait_queue_head, wait); + + if (shm && shm->ctl_snapshot_last != shm->ctl_snapshot_red) + mask |= EPOLLIN; + + return mask; +} + + +static int snd_usx2y_hwdep_dsp_status(struct snd_hwdep *hw, + struct snd_hwdep_dsp_status *info) +{ + static const char * const type_ids[USX2Y_TYPE_NUMS] = { + [USX2Y_TYPE_122] = "us122", + [USX2Y_TYPE_224] = "us224", + [USX2Y_TYPE_428] = "us428", + }; + struct usx2ydev *us428 = hw->private_data; + int id = -1; + + switch (le16_to_cpu(us428->dev->descriptor.idProduct)) { + case USB_ID_US122: + id = USX2Y_TYPE_122; + break; + case USB_ID_US224: + id = USX2Y_TYPE_224; + break; + case USB_ID_US428: + id = USX2Y_TYPE_428; + break; + } + if (id < 0) + return -ENODEV; + strcpy(info->id, type_ids[id]); + info->num_dsps = 2; // 0: Prepad Data, 1: FPGA Code + if (us428->chip_status & USX2Y_STAT_CHIP_INIT) + info->chip_ready = 1; + info->version = USX2Y_DRIVER_VERSION; + return 0; +} + +static int usx2y_create_usbmidi(struct snd_card *card) +{ + static const struct snd_usb_midi_endpoint_info quirk_data_1 = { + .out_ep = 0x06, + .in_ep = 0x06, + .out_cables = 0x001, + .in_cables = 0x001 + }; + static const struct snd_usb_audio_quirk quirk_1 = { + .vendor_name = "TASCAM", + .product_name = NAME_ALLCAPS, + .ifnum = 0, + .type = QUIRK_MIDI_FIXED_ENDPOINT, + .data = &quirk_data_1 + }; + static const struct snd_usb_midi_endpoint_info quirk_data_2 = { + .out_ep = 0x06, + .in_ep = 0x06, + .out_cables = 0x003, + .in_cables = 0x003 + }; + static const struct snd_usb_audio_quirk quirk_2 = { + .vendor_name = "TASCAM", + .product_name = "US428", + .ifnum = 0, + .type = QUIRK_MIDI_FIXED_ENDPOINT, + .data = &quirk_data_2 + }; + struct usb_device *dev = usx2y(card)->dev; + struct usb_interface *iface = usb_ifnum_to_if(dev, 0); + const struct snd_usb_audio_quirk *quirk = + le16_to_cpu(dev->descriptor.idProduct) == USB_ID_US428 ? + &quirk_2 : &quirk_1; + + snd_printdd("%s\n", __func__); + return snd_usbmidi_create(card, iface, &usx2y(card)->midi_list, quirk); +} + +static int usx2y_create_alsa_devices(struct snd_card *card) +{ + int err; + + err = usx2y_create_usbmidi(card); + if (err < 0) { + snd_printk(KERN_ERR "%s: usx2y_create_usbmidi error %i\n", __func__, err); + return err; + } + err = usx2y_audio_create(card); + if (err < 0) + return err; + err = usx2y_hwdep_pcm_new(card); + if (err < 0) + return err; + err = snd_card_register(card); + if (err < 0) + return err; + return 0; +} + +static int snd_usx2y_hwdep_dsp_load(struct snd_hwdep *hw, + struct snd_hwdep_dsp_image *dsp) +{ + struct usx2ydev *priv = hw->private_data; + struct usb_device *dev = priv->dev; + int lret, err; + char *buf; + + snd_printdd("dsp_load %s\n", dsp->name); + + buf = memdup_user(dsp->image, dsp->length); + if (IS_ERR(buf)) + return PTR_ERR(buf); + + err = usb_set_interface(dev, 0, 1); + if (err) + snd_printk(KERN_ERR "usb_set_interface error\n"); + else + err = usb_bulk_msg(dev, usb_sndbulkpipe(dev, 2), buf, dsp->length, &lret, 6000); + kfree(buf); + if (err) + return err; + if (dsp->index == 1) { + msleep(250); // give the device some time + err = usx2y_async_seq04_init(priv); + if (err) { + snd_printk(KERN_ERR "usx2y_async_seq04_init error\n"); + return err; + } + err = usx2y_in04_init(priv); + if (err) { + snd_printk(KERN_ERR "usx2y_in04_init error\n"); + return err; + } + err = usx2y_create_alsa_devices(hw->card); + if (err) { + snd_printk(KERN_ERR "usx2y_create_alsa_devices error %i\n", err); + return err; + } + priv->chip_status |= USX2Y_STAT_CHIP_INIT; + snd_printdd("%s: alsa all started\n", hw->name); + } + return err; +} + +int usx2y_hwdep_new(struct snd_card *card, struct usb_device *device) +{ + int err; + struct snd_hwdep *hw; + struct usx2ydev *us428 = usx2y(card); + + err = snd_hwdep_new(card, SND_USX2Y_LOADER_ID, 0, &hw); + if (err < 0) + return err; + + hw->iface = SNDRV_HWDEP_IFACE_USX2Y; + hw->private_data = us428; + hw->ops.dsp_status = snd_usx2y_hwdep_dsp_status; + hw->ops.dsp_load = snd_usx2y_hwdep_dsp_load; + hw->ops.mmap = snd_us428ctls_mmap; + hw->ops.poll = snd_us428ctls_poll; + hw->exclusive = 1; + sprintf(hw->name, "/dev/bus/usb/%03d/%03d", device->bus->busnum, device->devnum); + + us428->us428ctls_sharedmem = alloc_pages_exact(US428_SHAREDMEM_PAGES, GFP_KERNEL); + if (!us428->us428ctls_sharedmem) + return -ENOMEM; + memset(us428->us428ctls_sharedmem, -1, US428_SHAREDMEM_PAGES); + us428->us428ctls_sharedmem->ctl_snapshot_last = -2; + + return 0; +} |