summaryrefslogtreecommitdiffstats
path: root/sound/usb/usx2y
diff options
context:
space:
mode:
Diffstat (limited to 'sound/usb/usx2y')
-rw-r--r--sound/usb/usx2y/Makefile6
-rw-r--r--sound/usb/usx2y/us122l.c740
-rw-r--r--sound/usb/usx2y/us122l.h34
-rw-r--r--sound/usb/usx2y/usX2Yhwdep.c249
-rw-r--r--sound/usb/usx2y/usX2Yhwdep.h7
-rw-r--r--sound/usb/usx2y/usb_stream.c782
-rw-r--r--sound/usb/usx2y/usb_stream.h46
-rw-r--r--sound/usb/usx2y/usbus428ctldefs.h93
-rw-r--r--sound/usb/usx2y/usbusx2y.c466
-rw-r--r--sound/usb/usx2y/usbusx2y.h88
-rw-r--r--sound/usb/usx2y/usbusx2yaudio.c1033
-rw-r--r--sound/usb/usx2y/usx2y.h38
-rw-r--r--sound/usb/usx2y/usx2yhwdeppcm.c775
-rw-r--r--sound/usb/usx2y/usx2yhwdeppcm.h23
14 files changed, 4380 insertions, 0 deletions
diff --git a/sound/usb/usx2y/Makefile b/sound/usb/usx2y/Makefile
new file mode 100644
index 0000000000..cc4c2f1efa
--- /dev/null
+++ b/sound/usb/usx2y/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+snd-usb-usx2y-objs := usbusx2y.o usX2Yhwdep.o usx2yhwdeppcm.o
+snd-usb-us122l-objs := us122l.o
+
+obj-$(CONFIG_SND_USB_USX2Y) += snd-usb-usx2y.o
+obj-$(CONFIG_SND_USB_US122L) += snd-usb-us122l.o
diff --git a/sound/usb/usx2y/us122l.c b/sound/usb/usx2y/us122l.c
new file mode 100644
index 0000000000..709ccad972
--- /dev/null
+++ b/sound/usb/usx2y/us122l.c
@@ -0,0 +1,740 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2007, 2008 Karsten Wiese <fzu@wemgehoertderstaat.de>
+ */
+
+#include <linux/slab.h>
+#include <linux/usb.h>
+#include <linux/usb/audio.h>
+#include <linux/module.h>
+#include <sound/core.h>
+#include <sound/hwdep.h>
+#include <sound/pcm.h>
+#include <sound/initval.h>
+#define MODNAME "US122L"
+#include "usb_stream.c"
+#include "../usbaudio.h"
+#include "../midi.h"
+#include "us122l.h"
+
+MODULE_AUTHOR("Karsten Wiese <fzu@wemgehoertderstaat.de>");
+MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.5");
+MODULE_LICENSE("GPL");
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */
+ /* Enable this card */
+static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS".");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS".");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS".");
+
+/* driver_info flags */
+#define US122L_FLAG_US144 BIT(0)
+
+static int snd_us122l_card_used[SNDRV_CARDS];
+
+static int us122l_create_usbmidi(struct snd_card *card)
+{
+ static const struct snd_usb_midi_endpoint_info quirk_data = {
+ .out_ep = 4,
+ .in_ep = 3,
+ .out_cables = 0x001,
+ .in_cables = 0x001
+ };
+ static const struct snd_usb_audio_quirk quirk = {
+ .vendor_name = "US122L",
+ .product_name = NAME_ALLCAPS,
+ .ifnum = 1,
+ .type = QUIRK_MIDI_US122L,
+ .data = &quirk_data
+ };
+ struct usb_device *dev = US122L(card)->dev;
+ struct usb_interface *iface = usb_ifnum_to_if(dev, 1);
+
+ return snd_usbmidi_create(card, iface,
+ &US122L(card)->midi_list, &quirk);
+}
+
+static int us144_create_usbmidi(struct snd_card *card)
+{
+ static const struct snd_usb_midi_endpoint_info quirk_data = {
+ .out_ep = 4,
+ .in_ep = 3,
+ .out_cables = 0x001,
+ .in_cables = 0x001
+ };
+ static const struct snd_usb_audio_quirk quirk = {
+ .vendor_name = "US144",
+ .product_name = NAME_ALLCAPS,
+ .ifnum = 0,
+ .type = QUIRK_MIDI_US122L,
+ .data = &quirk_data
+ };
+ struct usb_device *dev = US122L(card)->dev;
+ struct usb_interface *iface = usb_ifnum_to_if(dev, 0);
+
+ return snd_usbmidi_create(card, iface,
+ &US122L(card)->midi_list, &quirk);
+}
+
+static void pt_info_set(struct usb_device *dev, u8 v)
+{
+ int ret;
+
+ ret = usb_control_msg_send(dev, 0, 'I',
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ v, 0, NULL, 0, 1000, GFP_NOIO);
+ snd_printdd(KERN_DEBUG "%i\n", ret);
+}
+
+static void usb_stream_hwdep_vm_open(struct vm_area_struct *area)
+{
+ struct us122l *us122l = area->vm_private_data;
+
+ atomic_inc(&us122l->mmap_count);
+ snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
+}
+
+static vm_fault_t usb_stream_hwdep_vm_fault(struct vm_fault *vmf)
+{
+ unsigned long offset;
+ struct page *page;
+ void *vaddr;
+ struct us122l *us122l = vmf->vma->vm_private_data;
+ struct usb_stream *s;
+
+ mutex_lock(&us122l->mutex);
+ s = us122l->sk.s;
+ if (!s)
+ goto unlock;
+
+ offset = vmf->pgoff << PAGE_SHIFT;
+ if (offset < PAGE_ALIGN(s->read_size)) {
+ vaddr = (char *)s + offset;
+ } else {
+ offset -= PAGE_ALIGN(s->read_size);
+ if (offset >= PAGE_ALIGN(s->write_size))
+ goto unlock;
+
+ vaddr = us122l->sk.write_page + offset;
+ }
+ page = virt_to_page(vaddr);
+
+ get_page(page);
+ mutex_unlock(&us122l->mutex);
+
+ vmf->page = page;
+
+ return 0;
+unlock:
+ mutex_unlock(&us122l->mutex);
+ return VM_FAULT_SIGBUS;
+}
+
+static void usb_stream_hwdep_vm_close(struct vm_area_struct *area)
+{
+ struct us122l *us122l = area->vm_private_data;
+
+ atomic_dec(&us122l->mmap_count);
+ snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
+}
+
+static const struct vm_operations_struct usb_stream_hwdep_vm_ops = {
+ .open = usb_stream_hwdep_vm_open,
+ .fault = usb_stream_hwdep_vm_fault,
+ .close = usb_stream_hwdep_vm_close,
+};
+
+static int usb_stream_hwdep_open(struct snd_hwdep *hw, struct file *file)
+{
+ struct us122l *us122l = hw->private_data;
+ struct usb_interface *iface;
+
+ snd_printdd(KERN_DEBUG "%p %p\n", hw, file);
+ if (hw->used >= 2)
+ return -EBUSY;
+
+ if (!us122l->first)
+ us122l->first = file;
+
+ if (us122l->is_us144) {
+ iface = usb_ifnum_to_if(us122l->dev, 0);
+ usb_autopm_get_interface(iface);
+ }
+ iface = usb_ifnum_to_if(us122l->dev, 1);
+ usb_autopm_get_interface(iface);
+ return 0;
+}
+
+static int usb_stream_hwdep_release(struct snd_hwdep *hw, struct file *file)
+{
+ struct us122l *us122l = hw->private_data;
+ struct usb_interface *iface;
+
+ snd_printdd(KERN_DEBUG "%p %p\n", hw, file);
+
+ if (us122l->is_us144) {
+ iface = usb_ifnum_to_if(us122l->dev, 0);
+ usb_autopm_put_interface(iface);
+ }
+ iface = usb_ifnum_to_if(us122l->dev, 1);
+ usb_autopm_put_interface(iface);
+ if (us122l->first == file)
+ us122l->first = NULL;
+ mutex_lock(&us122l->mutex);
+ if (us122l->master == file)
+ us122l->master = us122l->slave;
+
+ us122l->slave = NULL;
+ mutex_unlock(&us122l->mutex);
+ return 0;
+}
+
+static int usb_stream_hwdep_mmap(struct snd_hwdep *hw,
+ struct file *filp, struct vm_area_struct *area)
+{
+ unsigned long size = area->vm_end - area->vm_start;
+ struct us122l *us122l = hw->private_data;
+ unsigned long offset;
+ struct usb_stream *s;
+ int err = 0;
+ bool read;
+
+ offset = area->vm_pgoff << PAGE_SHIFT;
+ mutex_lock(&us122l->mutex);
+ s = us122l->sk.s;
+ read = offset < s->read_size;
+ if (read && area->vm_flags & VM_WRITE) {
+ err = -EPERM;
+ goto out;
+ }
+ snd_printdd(KERN_DEBUG "%lu %u\n", size,
+ read ? s->read_size : s->write_size);
+ /* if userspace tries to mmap beyond end of our buffer, fail */
+ if (size > PAGE_ALIGN(read ? s->read_size : s->write_size)) {
+ snd_printk(KERN_WARNING "%lu > %u\n", size,
+ read ? s->read_size : s->write_size);
+ err = -EINVAL;
+ goto out;
+ }
+
+ area->vm_ops = &usb_stream_hwdep_vm_ops;
+ vm_flags_set(area, VM_DONTDUMP);
+ if (!read)
+ vm_flags_set(area, VM_DONTEXPAND);
+ area->vm_private_data = us122l;
+ atomic_inc(&us122l->mmap_count);
+out:
+ mutex_unlock(&us122l->mutex);
+ return err;
+}
+
+static __poll_t usb_stream_hwdep_poll(struct snd_hwdep *hw,
+ struct file *file, poll_table *wait)
+{
+ struct us122l *us122l = hw->private_data;
+ unsigned int *polled;
+ __poll_t mask;
+
+ poll_wait(file, &us122l->sk.sleep, wait);
+
+ mask = EPOLLIN | EPOLLOUT | EPOLLWRNORM | EPOLLERR;
+ if (mutex_trylock(&us122l->mutex)) {
+ struct usb_stream *s = us122l->sk.s;
+
+ if (s && s->state == usb_stream_ready) {
+ if (us122l->first == file)
+ polled = &s->periods_polled;
+ else
+ polled = &us122l->second_periods_polled;
+ if (*polled != s->periods_done) {
+ *polled = s->periods_done;
+ mask = EPOLLIN | EPOLLOUT | EPOLLWRNORM;
+ } else {
+ mask = 0;
+ }
+ }
+ mutex_unlock(&us122l->mutex);
+ }
+ return mask;
+}
+
+static void us122l_stop(struct us122l *us122l)
+{
+ struct list_head *p;
+
+ list_for_each(p, &us122l->midi_list)
+ snd_usbmidi_input_stop(p);
+
+ usb_stream_stop(&us122l->sk);
+ usb_stream_free(&us122l->sk);
+}
+
+static int us122l_set_sample_rate(struct usb_device *dev, int rate)
+{
+ unsigned int ep = 0x81;
+ unsigned char data[3];
+ int err;
+
+ data[0] = rate;
+ data[1] = rate >> 8;
+ data[2] = rate >> 16;
+ err = usb_control_msg_send(dev, 0, UAC_SET_CUR,
+ USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_OUT,
+ UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3,
+ 1000, GFP_NOIO);
+ if (err)
+ snd_printk(KERN_ERR "%d: cannot set freq %d to ep 0x%x\n",
+ dev->devnum, rate, ep);
+ return err;
+}
+
+static bool us122l_start(struct us122l *us122l,
+ unsigned int rate, unsigned int period_frames)
+{
+ struct list_head *p;
+ int err;
+ unsigned int use_packsize = 0;
+ bool success = false;
+
+ if (us122l->dev->speed == USB_SPEED_HIGH) {
+ /* The us-122l's descriptor defaults to iso max_packsize 78,
+ which isn't needed for samplerates <= 48000.
+ Lets save some memory:
+ */
+ switch (rate) {
+ case 44100:
+ use_packsize = 36;
+ break;
+ case 48000:
+ use_packsize = 42;
+ break;
+ case 88200:
+ use_packsize = 72;
+ break;
+ }
+ }
+ if (!usb_stream_new(&us122l->sk, us122l->dev, 1, 2,
+ rate, use_packsize, period_frames, 6))
+ goto out;
+
+ err = us122l_set_sample_rate(us122l->dev, rate);
+ if (err < 0) {
+ us122l_stop(us122l);
+ snd_printk(KERN_ERR "us122l_set_sample_rate error\n");
+ goto out;
+ }
+ err = usb_stream_start(&us122l->sk);
+ if (err < 0) {
+ us122l_stop(us122l);
+ snd_printk(KERN_ERR "%s error %i\n", __func__, err);
+ goto out;
+ }
+ list_for_each(p, &us122l->midi_list)
+ snd_usbmidi_input_start(p);
+ success = true;
+out:
+ return success;
+}
+
+static int usb_stream_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct usb_stream_config cfg;
+ struct us122l *us122l = hw->private_data;
+ struct usb_stream *s;
+ unsigned int min_period_frames;
+ int err = 0;
+ bool high_speed;
+
+ if (cmd != SNDRV_USB_STREAM_IOCTL_SET_PARAMS)
+ return -ENOTTY;
+
+ if (copy_from_user(&cfg, (void __user *)arg, sizeof(cfg)))
+ return -EFAULT;
+
+ if (cfg.version != USB_STREAM_INTERFACE_VERSION)
+ return -ENXIO;
+
+ high_speed = us122l->dev->speed == USB_SPEED_HIGH;
+ if ((cfg.sample_rate != 44100 && cfg.sample_rate != 48000 &&
+ (!high_speed ||
+ (cfg.sample_rate != 88200 && cfg.sample_rate != 96000))) ||
+ cfg.frame_size != 6 ||
+ cfg.period_frames > 0x3000)
+ return -EINVAL;
+
+ switch (cfg.sample_rate) {
+ case 44100:
+ min_period_frames = 48;
+ break;
+ case 48000:
+ min_period_frames = 52;
+ break;
+ default:
+ min_period_frames = 104;
+ break;
+ }
+ if (!high_speed)
+ min_period_frames <<= 1;
+ if (cfg.period_frames < min_period_frames)
+ return -EINVAL;
+
+ snd_power_wait(hw->card);
+
+ mutex_lock(&us122l->mutex);
+ s = us122l->sk.s;
+ if (!us122l->master) {
+ us122l->master = file;
+ } else if (us122l->master != file) {
+ if (!s || memcmp(&cfg, &s->cfg, sizeof(cfg))) {
+ err = -EIO;
+ goto unlock;
+ }
+ us122l->slave = file;
+ }
+ if (!s || memcmp(&cfg, &s->cfg, sizeof(cfg)) ||
+ s->state == usb_stream_xrun) {
+ us122l_stop(us122l);
+ if (!us122l_start(us122l, cfg.sample_rate, cfg.period_frames))
+ err = -EIO;
+ else
+ err = 1;
+ }
+unlock:
+ mutex_unlock(&us122l->mutex);
+ wake_up_all(&us122l->sk.sleep);
+ return err;
+}
+
+#define SND_USB_STREAM_ID "USB STREAM"
+static int usb_stream_hwdep_new(struct snd_card *card)
+{
+ int err;
+ struct snd_hwdep *hw;
+ struct usb_device *dev = US122L(card)->dev;
+
+ err = snd_hwdep_new(card, SND_USB_STREAM_ID, 0, &hw);
+ if (err < 0)
+ return err;
+
+ hw->iface = SNDRV_HWDEP_IFACE_USB_STREAM;
+ hw->private_data = US122L(card);
+ hw->ops.open = usb_stream_hwdep_open;
+ hw->ops.release = usb_stream_hwdep_release;
+ hw->ops.ioctl = usb_stream_hwdep_ioctl;
+ hw->ops.ioctl_compat = usb_stream_hwdep_ioctl;
+ hw->ops.mmap = usb_stream_hwdep_mmap;
+ hw->ops.poll = usb_stream_hwdep_poll;
+
+ sprintf(hw->name, "/dev/bus/usb/%03d/%03d/hwdeppcm",
+ dev->bus->busnum, dev->devnum);
+ return 0;
+}
+
+static bool us122l_create_card(struct snd_card *card)
+{
+ int err;
+ struct us122l *us122l = US122L(card);
+
+ if (us122l->is_us144) {
+ err = usb_set_interface(us122l->dev, 0, 1);
+ if (err) {
+ snd_printk(KERN_ERR "usb_set_interface error\n");
+ return false;
+ }
+ }
+ err = usb_set_interface(us122l->dev, 1, 1);
+ if (err) {
+ snd_printk(KERN_ERR "usb_set_interface error\n");
+ return false;
+ }
+
+ pt_info_set(us122l->dev, 0x11);
+ pt_info_set(us122l->dev, 0x10);
+
+ if (!us122l_start(us122l, 44100, 256))
+ return false;
+
+ if (us122l->is_us144)
+ err = us144_create_usbmidi(card);
+ else
+ err = us122l_create_usbmidi(card);
+ if (err < 0) {
+ snd_printk(KERN_ERR "us122l_create_usbmidi error %i\n", err);
+ goto stop;
+ }
+ err = usb_stream_hwdep_new(card);
+ if (err < 0) {
+ /* release the midi resources */
+ struct list_head *p;
+
+ list_for_each(p, &us122l->midi_list)
+ snd_usbmidi_disconnect(p);
+
+ goto stop;
+ }
+ return true;
+
+stop:
+ us122l_stop(us122l);
+ return false;
+}
+
+static void snd_us122l_free(struct snd_card *card)
+{
+ struct us122l *us122l = US122L(card);
+ int index = us122l->card_index;
+
+ if (index >= 0 && index < SNDRV_CARDS)
+ snd_us122l_card_used[index] = 0;
+}
+
+static int usx2y_create_card(struct usb_device *device,
+ struct usb_interface *intf,
+ struct snd_card **cardp,
+ unsigned long flags)
+{
+ int dev;
+ struct snd_card *card;
+ int err;
+
+ for (dev = 0; dev < SNDRV_CARDS; ++dev)
+ if (enable[dev] && !snd_us122l_card_used[dev])
+ break;
+ if (dev >= SNDRV_CARDS)
+ return -ENODEV;
+ err = snd_card_new(&intf->dev, index[dev], id[dev], THIS_MODULE,
+ sizeof(struct us122l), &card);
+ if (err < 0)
+ return err;
+ snd_us122l_card_used[US122L(card)->card_index = dev] = 1;
+ card->private_free = snd_us122l_free;
+ US122L(card)->dev = device;
+ mutex_init(&US122L(card)->mutex);
+ init_waitqueue_head(&US122L(card)->sk.sleep);
+ US122L(card)->is_us144 = flags & US122L_FLAG_US144;
+ INIT_LIST_HEAD(&US122L(card)->midi_list);
+ strcpy(card->driver, "USB "NAME_ALLCAPS"");
+ sprintf(card->shortname, "TASCAM "NAME_ALLCAPS"");
+ sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)",
+ card->shortname,
+ le16_to_cpu(device->descriptor.idVendor),
+ le16_to_cpu(device->descriptor.idProduct),
+ 0,
+ US122L(card)->dev->bus->busnum,
+ US122L(card)->dev->devnum
+ );
+ *cardp = card;
+ return 0;
+}
+
+static int us122l_usb_probe(struct usb_interface *intf,
+ const struct usb_device_id *device_id,
+ struct snd_card **cardp)
+{
+ struct usb_device *device = interface_to_usbdev(intf);
+ struct snd_card *card;
+ int err;
+
+ err = usx2y_create_card(device, intf, &card, device_id->driver_info);
+ if (err < 0)
+ return err;
+
+ if (!us122l_create_card(card)) {
+ snd_card_free(card);
+ return -EINVAL;
+ }
+
+ err = snd_card_register(card);
+ if (err < 0) {
+ snd_card_free(card);
+ return err;
+ }
+
+ usb_get_intf(usb_ifnum_to_if(device, 0));
+ usb_get_dev(device);
+ *cardp = card;
+ return 0;
+}
+
+static int snd_us122l_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_device *device = interface_to_usbdev(intf);
+ struct snd_card *card;
+ int err;
+
+ if (id->driver_info & US122L_FLAG_US144 &&
+ device->speed == USB_SPEED_HIGH) {
+ snd_printk(KERN_ERR "disable ehci-hcd to run US-144\n");
+ return -ENODEV;
+ }
+
+ snd_printdd(KERN_DEBUG"%p:%i\n",
+ intf, intf->cur_altsetting->desc.bInterfaceNumber);
+ if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
+ return 0;
+
+ err = us122l_usb_probe(usb_get_intf(intf), id, &card);
+ if (err < 0) {
+ usb_put_intf(intf);
+ return err;
+ }
+
+ usb_set_intfdata(intf, card);
+ return 0;
+}
+
+static void snd_us122l_disconnect(struct usb_interface *intf)
+{
+ struct snd_card *card;
+ struct us122l *us122l;
+ struct list_head *p;
+
+ card = usb_get_intfdata(intf);
+ if (!card)
+ return;
+
+ snd_card_disconnect(card);
+
+ us122l = US122L(card);
+ mutex_lock(&us122l->mutex);
+ us122l_stop(us122l);
+ mutex_unlock(&us122l->mutex);
+
+ /* release the midi resources */
+ list_for_each(p, &us122l->midi_list) {
+ snd_usbmidi_disconnect(p);
+ }
+
+ usb_put_intf(usb_ifnum_to_if(us122l->dev, 0));
+ usb_put_intf(usb_ifnum_to_if(us122l->dev, 1));
+ usb_put_dev(us122l->dev);
+
+ while (atomic_read(&us122l->mmap_count))
+ msleep(500);
+
+ snd_card_free(card);
+}
+
+static int snd_us122l_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct snd_card *card;
+ struct us122l *us122l;
+ struct list_head *p;
+
+ card = usb_get_intfdata(intf);
+ if (!card)
+ return 0;
+ snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
+
+ us122l = US122L(card);
+ if (!us122l)
+ return 0;
+
+ list_for_each(p, &us122l->midi_list)
+ snd_usbmidi_input_stop(p);
+
+ mutex_lock(&us122l->mutex);
+ usb_stream_stop(&us122l->sk);
+ mutex_unlock(&us122l->mutex);
+
+ return 0;
+}
+
+static int snd_us122l_resume(struct usb_interface *intf)
+{
+ struct snd_card *card;
+ struct us122l *us122l;
+ struct list_head *p;
+ int err;
+
+ card = usb_get_intfdata(intf);
+ if (!card)
+ return 0;
+
+ us122l = US122L(card);
+ if (!us122l)
+ return 0;
+
+ mutex_lock(&us122l->mutex);
+ /* needed, doesn't restart without: */
+ if (us122l->is_us144) {
+ err = usb_set_interface(us122l->dev, 0, 1);
+ if (err) {
+ snd_printk(KERN_ERR "usb_set_interface error\n");
+ goto unlock;
+ }
+ }
+ err = usb_set_interface(us122l->dev, 1, 1);
+ if (err) {
+ snd_printk(KERN_ERR "usb_set_interface error\n");
+ goto unlock;
+ }
+
+ pt_info_set(us122l->dev, 0x11);
+ pt_info_set(us122l->dev, 0x10);
+
+ err = us122l_set_sample_rate(us122l->dev,
+ us122l->sk.s->cfg.sample_rate);
+ if (err < 0) {
+ snd_printk(KERN_ERR "us122l_set_sample_rate error\n");
+ goto unlock;
+ }
+ err = usb_stream_start(&us122l->sk);
+ if (err)
+ goto unlock;
+
+ list_for_each(p, &us122l->midi_list)
+ snd_usbmidi_input_start(p);
+unlock:
+ mutex_unlock(&us122l->mutex);
+ snd_power_change_state(card, SNDRV_CTL_POWER_D0);
+ return err;
+}
+
+static const struct usb_device_id snd_us122l_usb_id_table[] = {
+ {
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = 0x0644,
+ .idProduct = USB_ID_US122L
+ },
+ { /* US-144 only works at USB1.1! Disable module ehci-hcd. */
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = 0x0644,
+ .idProduct = USB_ID_US144,
+ .driver_info = US122L_FLAG_US144
+ },
+ {
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = 0x0644,
+ .idProduct = USB_ID_US122MKII
+ },
+ {
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = 0x0644,
+ .idProduct = USB_ID_US144MKII,
+ .driver_info = US122L_FLAG_US144
+ },
+ { /* terminator */ }
+};
+MODULE_DEVICE_TABLE(usb, snd_us122l_usb_id_table);
+
+static struct usb_driver snd_us122l_usb_driver = {
+ .name = "snd-usb-us122l",
+ .probe = snd_us122l_probe,
+ .disconnect = snd_us122l_disconnect,
+ .suspend = snd_us122l_suspend,
+ .resume = snd_us122l_resume,
+ .reset_resume = snd_us122l_resume,
+ .id_table = snd_us122l_usb_id_table,
+ .supports_autosuspend = 1
+};
+
+module_usb_driver(snd_us122l_usb_driver);
diff --git a/sound/usb/usx2y/us122l.h b/sound/usb/usx2y/us122l.h
new file mode 100644
index 0000000000..c32ae5e981
--- /dev/null
+++ b/sound/usb/usx2y/us122l.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef US122L_H
+#define US122L_H
+
+
+struct us122l {
+ struct usb_device *dev;
+ int card_index;
+ int stride;
+ struct usb_stream_kernel sk;
+
+ struct mutex mutex;
+ struct file *first;
+ unsigned int second_periods_polled;
+ struct file *master;
+ struct file *slave;
+ struct list_head midi_list;
+
+ atomic_t mmap_count;
+
+ bool is_us144;
+};
+
+
+#define US122L(c) ((struct us122l *)(c)->private_data)
+
+#define NAME_ALLCAPS "US-122L"
+
+#define USB_ID_US122L 0x800E
+#define USB_ID_US144 0x800F
+#define USB_ID_US122MKII 0x8021
+#define USB_ID_US144MKII 0x8020
+
+#endif
diff --git a/sound/usb/usx2y/usX2Yhwdep.c b/sound/usb/usx2y/usX2Yhwdep.c
new file mode 100644
index 0000000000..4937ede0b5
--- /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;
+ vm_flags_set(area, 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;
+}
diff --git a/sound/usb/usx2y/usX2Yhwdep.h b/sound/usb/usx2y/usX2Yhwdep.h
new file mode 100644
index 0000000000..0c9946d9cd
--- /dev/null
+++ b/sound/usb/usx2y/usX2Yhwdep.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef USX2YHWDEP_H
+#define USX2YHWDEP_H
+
+int usx2y_hwdep_new(struct snd_card *card, struct usb_device *device);
+
+#endif
diff --git a/sound/usb/usx2y/usb_stream.c b/sound/usb/usx2y/usb_stream.c
new file mode 100644
index 0000000000..a4d32e8a1d
--- /dev/null
+++ b/sound/usb/usx2y/usb_stream.c
@@ -0,0 +1,782 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2007, 2008 Karsten Wiese <fzu@wemgehoertderstaat.de>
+ */
+
+#include <linux/usb.h>
+#include <linux/gfp.h>
+
+#include "usb_stream.h"
+
+/* setup */
+
+static unsigned int usb_stream_next_packet_size(struct usb_stream_kernel *sk)
+{
+ struct usb_stream *s = sk->s;
+
+ sk->out_phase_peeked = (sk->out_phase & 0xffff) + sk->freqn;
+ return (sk->out_phase_peeked >> 16) * s->cfg.frame_size;
+}
+
+static void playback_prep_freqn(struct usb_stream_kernel *sk, struct urb *urb)
+{
+ struct usb_stream *s = sk->s;
+ int pack, lb = 0;
+
+ for (pack = 0; pack < sk->n_o_ps; pack++) {
+ int l = usb_stream_next_packet_size(sk);
+
+ if (s->idle_outsize + lb + l > s->period_size)
+ goto check;
+
+ sk->out_phase = sk->out_phase_peeked;
+ urb->iso_frame_desc[pack].offset = lb;
+ urb->iso_frame_desc[pack].length = l;
+ lb += l;
+ }
+ snd_printdd(KERN_DEBUG "%i\n", lb);
+
+check:
+ urb->number_of_packets = pack;
+ urb->transfer_buffer_length = lb;
+ s->idle_outsize += lb - s->period_size;
+ snd_printdd(KERN_DEBUG "idle=%i ul=%i ps=%i\n", s->idle_outsize,
+ lb, s->period_size);
+}
+
+static int init_pipe_urbs(struct usb_stream_kernel *sk,
+ unsigned int use_packsize,
+ struct urb **urbs, char *transfer,
+ struct usb_device *dev, int pipe)
+{
+ int u, p;
+ int maxpacket = use_packsize ?
+ use_packsize : usb_maxpacket(dev, pipe);
+ int transfer_length = maxpacket * sk->n_o_ps;
+
+ for (u = 0; u < USB_STREAM_NURBS;
+ ++u, transfer += transfer_length) {
+ struct urb *urb = urbs[u];
+ struct usb_iso_packet_descriptor *desc;
+
+ urb->transfer_buffer = transfer;
+ urb->dev = dev;
+ urb->pipe = pipe;
+ urb->number_of_packets = sk->n_o_ps;
+ urb->context = sk;
+ urb->interval = 1;
+ if (usb_pipeout(pipe))
+ continue;
+ if (usb_urb_ep_type_check(urb))
+ return -EINVAL;
+
+ urb->transfer_buffer_length = transfer_length;
+ desc = urb->iso_frame_desc;
+ desc->offset = 0;
+ desc->length = maxpacket;
+ for (p = 1; p < sk->n_o_ps; ++p) {
+ desc[p].offset = desc[p - 1].offset + maxpacket;
+ desc[p].length = maxpacket;
+ }
+ }
+
+ return 0;
+}
+
+static int init_urbs(struct usb_stream_kernel *sk, unsigned int use_packsize,
+ struct usb_device *dev, int in_pipe, int out_pipe)
+{
+ struct usb_stream *s = sk->s;
+ char *indata =
+ (char *)s + sizeof(*s) + sizeof(struct usb_stream_packet) * s->inpackets;
+ int u;
+
+ for (u = 0; u < USB_STREAM_NURBS; ++u) {
+ sk->inurb[u] = usb_alloc_urb(sk->n_o_ps, GFP_KERNEL);
+ if (!sk->inurb[u])
+ return -ENOMEM;
+
+ sk->outurb[u] = usb_alloc_urb(sk->n_o_ps, GFP_KERNEL);
+ if (!sk->outurb[u])
+ return -ENOMEM;
+ }
+
+ if (init_pipe_urbs(sk, use_packsize, sk->inurb, indata, dev, in_pipe) ||
+ init_pipe_urbs(sk, use_packsize, sk->outurb, sk->write_page, dev,
+ out_pipe))
+ return -EINVAL;
+
+ return 0;
+}
+
+/*
+ * convert a sampling rate into our full speed format (fs/1000 in Q16.16)
+ * this will overflow at approx 524 kHz
+ */
+static inline unsigned int get_usb_full_speed_rate(unsigned int rate)
+{
+ return ((rate << 13) + 62) / 125;
+}
+
+/*
+ * convert a sampling rate into USB high speed format (fs/8000 in Q16.16)
+ * this will overflow at approx 4 MHz
+ */
+static inline unsigned int get_usb_high_speed_rate(unsigned int rate)
+{
+ return ((rate << 10) + 62) / 125;
+}
+
+void usb_stream_free(struct usb_stream_kernel *sk)
+{
+ struct usb_stream *s;
+ unsigned int u;
+
+ for (u = 0; u < USB_STREAM_NURBS; ++u) {
+ usb_free_urb(sk->inurb[u]);
+ sk->inurb[u] = NULL;
+ usb_free_urb(sk->outurb[u]);
+ sk->outurb[u] = NULL;
+ }
+
+ s = sk->s;
+ if (!s)
+ return;
+
+ if (sk->write_page) {
+ free_pages_exact(sk->write_page, s->write_size);
+ sk->write_page = NULL;
+ }
+
+ free_pages_exact(s, s->read_size);
+ sk->s = NULL;
+}
+
+struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
+ struct usb_device *dev,
+ unsigned int in_endpoint,
+ unsigned int out_endpoint,
+ unsigned int sample_rate,
+ unsigned int use_packsize,
+ unsigned int period_frames,
+ unsigned int frame_size)
+{
+ int packets, max_packsize;
+ int in_pipe, out_pipe;
+ int read_size = sizeof(struct usb_stream);
+ int write_size;
+ int usb_frames = dev->speed == USB_SPEED_HIGH ? 8000 : 1000;
+
+ in_pipe = usb_rcvisocpipe(dev, in_endpoint);
+ out_pipe = usb_sndisocpipe(dev, out_endpoint);
+
+ max_packsize = use_packsize ?
+ use_packsize : usb_maxpacket(dev, in_pipe);
+
+ /*
+ t_period = period_frames / sample_rate
+ iso_packs = t_period / t_iso_frame
+ = (period_frames / sample_rate) * (1 / t_iso_frame)
+ */
+
+ packets = period_frames * usb_frames / sample_rate + 1;
+
+ if (dev->speed == USB_SPEED_HIGH)
+ packets = (packets + 7) & ~7;
+
+ read_size += packets * USB_STREAM_URBDEPTH *
+ (max_packsize + sizeof(struct usb_stream_packet));
+
+ max_packsize = usb_maxpacket(dev, out_pipe);
+ write_size = max_packsize * packets * USB_STREAM_URBDEPTH;
+
+ if (read_size >= 256*PAGE_SIZE || write_size >= 256*PAGE_SIZE) {
+ snd_printk(KERN_WARNING "a size exceeds 128*PAGE_SIZE\n");
+ goto out;
+ }
+
+ sk->s = alloc_pages_exact(read_size,
+ GFP_KERNEL | __GFP_ZERO | __GFP_NOWARN);
+ if (!sk->s) {
+ pr_warn("us122l: couldn't allocate read buffer\n");
+ goto out;
+ }
+ sk->s->cfg.version = USB_STREAM_INTERFACE_VERSION;
+
+ sk->s->read_size = read_size;
+
+ sk->s->cfg.sample_rate = sample_rate;
+ sk->s->cfg.frame_size = frame_size;
+ sk->n_o_ps = packets;
+ sk->s->inpackets = packets * USB_STREAM_URBDEPTH;
+ sk->s->cfg.period_frames = period_frames;
+ sk->s->period_size = frame_size * period_frames;
+
+ sk->s->write_size = write_size;
+
+ sk->write_page = alloc_pages_exact(write_size,
+ GFP_KERNEL | __GFP_ZERO | __GFP_NOWARN);
+ if (!sk->write_page) {
+ pr_warn("us122l: couldn't allocate write buffer\n");
+ usb_stream_free(sk);
+ return NULL;
+ }
+
+ /* calculate the frequency in 16.16 format */
+ if (dev->speed == USB_SPEED_FULL)
+ sk->freqn = get_usb_full_speed_rate(sample_rate);
+ else
+ sk->freqn = get_usb_high_speed_rate(sample_rate);
+
+ if (init_urbs(sk, use_packsize, dev, in_pipe, out_pipe) < 0) {
+ usb_stream_free(sk);
+ return NULL;
+ }
+
+ sk->s->state = usb_stream_stopped;
+out:
+ return sk->s;
+}
+
+/* start */
+
+static bool balance_check(struct usb_stream_kernel *sk, struct urb *urb)
+{
+ bool r;
+
+ if (unlikely(urb->status)) {
+ if (urb->status != -ESHUTDOWN && urb->status != -ENOENT)
+ snd_printk(KERN_WARNING "status=%i\n", urb->status);
+ sk->iso_frame_balance = 0x7FFFFFFF;
+ return false;
+ }
+ r = sk->iso_frame_balance == 0;
+ if (!r)
+ sk->i_urb = urb;
+ return r;
+}
+
+static bool balance_playback(struct usb_stream_kernel *sk, struct urb *urb)
+{
+ sk->iso_frame_balance += urb->number_of_packets;
+ return balance_check(sk, urb);
+}
+
+static bool balance_capture(struct usb_stream_kernel *sk, struct urb *urb)
+{
+ sk->iso_frame_balance -= urb->number_of_packets;
+ return balance_check(sk, urb);
+}
+
+static void subs_set_complete(struct urb **urbs, void (*complete)(struct urb *))
+{
+ int u;
+
+ for (u = 0; u < USB_STREAM_NURBS; u++) {
+ struct urb *urb = urbs[u];
+
+ urb->complete = complete;
+ }
+}
+
+static int usb_stream_prepare_playback(struct usb_stream_kernel *sk,
+ struct urb *inurb)
+{
+ struct usb_stream *s = sk->s;
+ struct urb *io;
+ struct usb_iso_packet_descriptor *id, *od;
+ int p = 0, lb = 0, l = 0;
+
+ io = sk->idle_outurb;
+ od = io->iso_frame_desc;
+
+ for (; s->sync_packet < 0; ++p, ++s->sync_packet) {
+ struct urb *ii = sk->completed_inurb;
+
+ id = ii->iso_frame_desc +
+ ii->number_of_packets + s->sync_packet;
+ l = id->actual_length;
+
+ od[p].length = l;
+ od[p].offset = lb;
+ lb += l;
+ }
+
+ for (;
+ s->sync_packet < inurb->number_of_packets && p < sk->n_o_ps;
+ ++p, ++s->sync_packet) {
+ l = inurb->iso_frame_desc[s->sync_packet].actual_length;
+
+ if (s->idle_outsize + lb + l > s->period_size)
+ goto check_ok;
+
+ od[p].length = l;
+ od[p].offset = lb;
+ lb += l;
+ }
+
+check_ok:
+ s->sync_packet -= inurb->number_of_packets;
+ if (unlikely(s->sync_packet < -2 || s->sync_packet > 0)) {
+ snd_printk(KERN_WARNING "invalid sync_packet = %i;"
+ " p=%i nop=%i %i %x %x %x > %x\n",
+ s->sync_packet, p, inurb->number_of_packets,
+ s->idle_outsize + lb + l,
+ s->idle_outsize, lb, l,
+ s->period_size);
+ return -1;
+ }
+ if (unlikely(lb % s->cfg.frame_size)) {
+ snd_printk(KERN_WARNING"invalid outsize = %i\n",
+ lb);
+ return -1;
+ }
+ s->idle_outsize += lb - s->period_size;
+ io->number_of_packets = p;
+ io->transfer_buffer_length = lb;
+ if (s->idle_outsize <= 0)
+ return 0;
+
+ snd_printk(KERN_WARNING "idle=%i\n", s->idle_outsize);
+ return -1;
+}
+
+static void prepare_inurb(int number_of_packets, struct urb *iu)
+{
+ struct usb_iso_packet_descriptor *id;
+ int p;
+
+ iu->number_of_packets = number_of_packets;
+ id = iu->iso_frame_desc;
+ id->offset = 0;
+ for (p = 0; p < iu->number_of_packets - 1; ++p)
+ id[p + 1].offset = id[p].offset + id[p].length;
+
+ iu->transfer_buffer_length =
+ id[0].length * iu->number_of_packets;
+}
+
+static int submit_urbs(struct usb_stream_kernel *sk,
+ struct urb *inurb, struct urb *outurb)
+{
+ int err;
+
+ prepare_inurb(sk->idle_outurb->number_of_packets, sk->idle_inurb);
+ err = usb_submit_urb(sk->idle_inurb, GFP_ATOMIC);
+ if (err < 0)
+ goto report_failure;
+
+ sk->idle_inurb = sk->completed_inurb;
+ sk->completed_inurb = inurb;
+ err = usb_submit_urb(sk->idle_outurb, GFP_ATOMIC);
+ if (err < 0)
+ goto report_failure;
+
+ sk->idle_outurb = sk->completed_outurb;
+ sk->completed_outurb = outurb;
+ return 0;
+
+report_failure:
+ snd_printk(KERN_ERR "%i\n", err);
+ return err;
+}
+
+#ifdef DEBUG_LOOP_BACK
+/*
+ This loop_back() shows how to read/write the period data.
+ */
+static void loop_back(struct usb_stream *s)
+{
+ char *i, *o;
+ int il, ol, l, p;
+ struct urb *iu;
+ struct usb_iso_packet_descriptor *id;
+
+ o = s->playback1st_to;
+ ol = s->playback1st_size;
+ l = 0;
+
+ if (s->insplit_pack >= 0) {
+ iu = sk->idle_inurb;
+ id = iu->iso_frame_desc;
+ p = s->insplit_pack;
+ } else
+ goto second;
+loop:
+ for (; p < iu->number_of_packets && l < s->period_size; ++p) {
+ i = iu->transfer_buffer + id[p].offset;
+ il = id[p].actual_length;
+ if (l + il > s->period_size)
+ il = s->period_size - l;
+ if (il <= ol) {
+ memcpy(o, i, il);
+ o += il;
+ ol -= il;
+ } else {
+ memcpy(o, i, ol);
+ singen_6pack(o, ol);
+ o = s->playback_to;
+ memcpy(o, i + ol, il - ol);
+ o += il - ol;
+ ol = s->period_size - s->playback1st_size;
+ }
+ l += il;
+ }
+ if (iu == sk->completed_inurb) {
+ if (l != s->period_size)
+ printk(KERN_DEBUG"%s:%i %i\n", __func__, __LINE__,
+ l/(int)s->cfg.frame_size);
+
+ return;
+ }
+second:
+ iu = sk->completed_inurb;
+ id = iu->iso_frame_desc;
+ p = 0;
+ goto loop;
+
+}
+#else
+static void loop_back(struct usb_stream *s)
+{
+}
+#endif
+
+static void stream_idle(struct usb_stream_kernel *sk,
+ struct urb *inurb, struct urb *outurb)
+{
+ struct usb_stream *s = sk->s;
+ int l, p;
+ int insize = s->idle_insize;
+ int urb_size = 0;
+
+ s->inpacket_split = s->next_inpacket_split;
+ s->inpacket_split_at = s->next_inpacket_split_at;
+ s->next_inpacket_split = -1;
+ s->next_inpacket_split_at = 0;
+
+ for (p = 0; p < inurb->number_of_packets; ++p) {
+ struct usb_iso_packet_descriptor *id = inurb->iso_frame_desc;
+
+ l = id[p].actual_length;
+ if (unlikely(l == 0 || id[p].status)) {
+ snd_printk(KERN_WARNING "underrun, status=%u\n",
+ id[p].status);
+ goto err_out;
+ }
+ s->inpacket_head++;
+ s->inpacket_head %= s->inpackets;
+ if (s->inpacket_split == -1)
+ s->inpacket_split = s->inpacket_head;
+
+ s->inpacket[s->inpacket_head].offset =
+ id[p].offset + (inurb->transfer_buffer - (void *)s);
+ s->inpacket[s->inpacket_head].length = l;
+ if (insize + l > s->period_size &&
+ s->next_inpacket_split == -1) {
+ s->next_inpacket_split = s->inpacket_head;
+ s->next_inpacket_split_at = s->period_size - insize;
+ }
+ insize += l;
+ urb_size += l;
+ }
+ s->idle_insize += urb_size - s->period_size;
+ if (s->idle_insize < 0) {
+ snd_printk(KERN_WARNING "%i\n",
+ (s->idle_insize)/(int)s->cfg.frame_size);
+ goto err_out;
+ }
+ s->insize_done += urb_size;
+
+ l = s->idle_outsize;
+ s->outpacket[0].offset = (sk->idle_outurb->transfer_buffer -
+ sk->write_page) - l;
+
+ if (usb_stream_prepare_playback(sk, inurb) < 0)
+ goto err_out;
+
+ s->outpacket[0].length = sk->idle_outurb->transfer_buffer_length + l;
+ s->outpacket[1].offset = sk->completed_outurb->transfer_buffer -
+ sk->write_page;
+
+ if (submit_urbs(sk, inurb, outurb) < 0)
+ goto err_out;
+
+ loop_back(s);
+ s->periods_done++;
+ wake_up_all(&sk->sleep);
+ return;
+err_out:
+ s->state = usb_stream_xrun;
+ wake_up_all(&sk->sleep);
+}
+
+static void i_capture_idle(struct urb *urb)
+{
+ struct usb_stream_kernel *sk = urb->context;
+
+ if (balance_capture(sk, urb))
+ stream_idle(sk, urb, sk->i_urb);
+}
+
+static void i_playback_idle(struct urb *urb)
+{
+ struct usb_stream_kernel *sk = urb->context;
+
+ if (balance_playback(sk, urb))
+ stream_idle(sk, sk->i_urb, urb);
+}
+
+static void stream_start(struct usb_stream_kernel *sk,
+ struct urb *inurb, struct urb *outurb)
+{
+ struct usb_stream *s = sk->s;
+
+ if (s->state >= usb_stream_sync1) {
+ int l, p, max_diff, max_diff_0;
+ int urb_size = 0;
+ unsigned int frames_per_packet, min_frames = 0;
+
+ frames_per_packet = (s->period_size - s->idle_insize);
+ frames_per_packet <<= 8;
+ frames_per_packet /=
+ s->cfg.frame_size * inurb->number_of_packets;
+ frames_per_packet++;
+
+ max_diff_0 = s->cfg.frame_size;
+ if (s->cfg.period_frames >= 256)
+ max_diff_0 <<= 1;
+ if (s->cfg.period_frames >= 1024)
+ max_diff_0 <<= 1;
+ max_diff = max_diff_0;
+ for (p = 0; p < inurb->number_of_packets; ++p) {
+ int diff;
+
+ l = inurb->iso_frame_desc[p].actual_length;
+ urb_size += l;
+
+ min_frames += frames_per_packet;
+ diff = urb_size -
+ (min_frames >> 8) * s->cfg.frame_size;
+ if (diff < max_diff) {
+ snd_printdd(KERN_DEBUG "%i %i %i %i\n",
+ s->insize_done,
+ urb_size / (int)s->cfg.frame_size,
+ inurb->number_of_packets, diff);
+ max_diff = diff;
+ }
+ }
+ s->idle_insize -= max_diff - max_diff_0;
+ s->idle_insize += urb_size - s->period_size;
+ if (s->idle_insize < 0) {
+ snd_printk(KERN_WARNING "%i %i %i\n",
+ s->idle_insize, urb_size, s->period_size);
+ return;
+ } else if (s->idle_insize == 0) {
+ s->next_inpacket_split =
+ (s->inpacket_head + 1) % s->inpackets;
+ s->next_inpacket_split_at = 0;
+ } else {
+ unsigned int split = s->inpacket_head;
+
+ l = s->idle_insize;
+ while (l > s->inpacket[split].length) {
+ l -= s->inpacket[split].length;
+ if (split == 0)
+ split = s->inpackets - 1;
+ else
+ split--;
+ }
+ s->next_inpacket_split = split;
+ s->next_inpacket_split_at =
+ s->inpacket[split].length - l;
+ }
+
+ s->insize_done += urb_size;
+
+ if (usb_stream_prepare_playback(sk, inurb) < 0)
+ return;
+
+ } else
+ playback_prep_freqn(sk, sk->idle_outurb);
+
+ if (submit_urbs(sk, inurb, outurb) < 0)
+ return;
+
+ if (s->state == usb_stream_sync1 && s->insize_done > 360000) {
+ /* just guesswork ^^^^^^ */
+ s->state = usb_stream_ready;
+ subs_set_complete(sk->inurb, i_capture_idle);
+ subs_set_complete(sk->outurb, i_playback_idle);
+ }
+}
+
+static void i_capture_start(struct urb *urb)
+{
+ struct usb_iso_packet_descriptor *id = urb->iso_frame_desc;
+ struct usb_stream_kernel *sk = urb->context;
+ struct usb_stream *s = sk->s;
+ int p;
+ int empty = 0;
+
+ if (urb->status) {
+ snd_printk(KERN_WARNING "status=%i\n", urb->status);
+ return;
+ }
+
+ for (p = 0; p < urb->number_of_packets; ++p) {
+ int l = id[p].actual_length;
+
+ if (l < s->cfg.frame_size) {
+ ++empty;
+ if (s->state >= usb_stream_sync0) {
+ snd_printk(KERN_WARNING "%i\n", l);
+ return;
+ }
+ }
+ s->inpacket_head++;
+ s->inpacket_head %= s->inpackets;
+ s->inpacket[s->inpacket_head].offset =
+ id[p].offset + (urb->transfer_buffer - (void *)s);
+ s->inpacket[s->inpacket_head].length = l;
+ }
+#ifdef SHOW_EMPTY
+ if (empty) {
+ printk(KERN_DEBUG"%s:%i: %i", __func__, __LINE__,
+ urb->iso_frame_desc[0].actual_length);
+ for (pack = 1; pack < urb->number_of_packets; ++pack) {
+ int l = urb->iso_frame_desc[pack].actual_length;
+
+ printk(KERN_CONT " %i", l);
+ }
+ printk(KERN_CONT "\n");
+ }
+#endif
+ if (!empty && s->state < usb_stream_sync1)
+ ++s->state;
+
+ if (balance_capture(sk, urb))
+ stream_start(sk, urb, sk->i_urb);
+}
+
+static void i_playback_start(struct urb *urb)
+{
+ struct usb_stream_kernel *sk = urb->context;
+
+ if (balance_playback(sk, urb))
+ stream_start(sk, sk->i_urb, urb);
+}
+
+int usb_stream_start(struct usb_stream_kernel *sk)
+{
+ struct usb_stream *s = sk->s;
+ int frame = 0, iters = 0;
+ int u, err;
+ int try = 0;
+
+ if (s->state != usb_stream_stopped)
+ return -EAGAIN;
+
+ subs_set_complete(sk->inurb, i_capture_start);
+ subs_set_complete(sk->outurb, i_playback_start);
+ memset(sk->write_page, 0, s->write_size);
+dotry:
+ s->insize_done = 0;
+ s->idle_insize = 0;
+ s->idle_outsize = 0;
+ s->sync_packet = -1;
+ s->inpacket_head = -1;
+ sk->iso_frame_balance = 0;
+ ++try;
+ for (u = 0; u < 2; u++) {
+ struct urb *inurb = sk->inurb[u];
+ struct urb *outurb = sk->outurb[u];
+
+ playback_prep_freqn(sk, outurb);
+ inurb->number_of_packets = outurb->number_of_packets;
+ inurb->transfer_buffer_length =
+ inurb->number_of_packets *
+ inurb->iso_frame_desc[0].length;
+
+ if (u == 0) {
+ int now;
+ struct usb_device *dev = inurb->dev;
+
+ frame = usb_get_current_frame_number(dev);
+ do {
+ now = usb_get_current_frame_number(dev);
+ ++iters;
+ } while (now > -1 && now == frame);
+ }
+ err = usb_submit_urb(inurb, GFP_ATOMIC);
+ if (err < 0) {
+ snd_printk(KERN_ERR
+ "usb_submit_urb(sk->inurb[%i]) returned %i\n",
+ u, err);
+ return err;
+ }
+ err = usb_submit_urb(outurb, GFP_ATOMIC);
+ if (err < 0) {
+ snd_printk(KERN_ERR
+ "usb_submit_urb(sk->outurb[%i]) returned %i\n",
+ u, err);
+ return err;
+ }
+
+ if (inurb->start_frame != outurb->start_frame) {
+ snd_printd(KERN_DEBUG
+ "u[%i] start_frames differ in:%u out:%u\n",
+ u, inurb->start_frame, outurb->start_frame);
+ goto check_retry;
+ }
+ }
+ snd_printdd(KERN_DEBUG "%i %i\n", frame, iters);
+ try = 0;
+check_retry:
+ if (try) {
+ usb_stream_stop(sk);
+ if (try < 5) {
+ msleep(1500);
+ snd_printd(KERN_DEBUG "goto dotry;\n");
+ goto dotry;
+ }
+ snd_printk(KERN_WARNING
+ "couldn't start all urbs on the same start_frame.\n");
+ return -EFAULT;
+ }
+
+ sk->idle_inurb = sk->inurb[USB_STREAM_NURBS - 2];
+ sk->idle_outurb = sk->outurb[USB_STREAM_NURBS - 2];
+ sk->completed_inurb = sk->inurb[USB_STREAM_NURBS - 1];
+ sk->completed_outurb = sk->outurb[USB_STREAM_NURBS - 1];
+
+/* wait, check */
+ {
+ int wait_ms = 3000;
+
+ while (s->state != usb_stream_ready && wait_ms > 0) {
+ snd_printdd(KERN_DEBUG "%i\n", s->state);
+ msleep(200);
+ wait_ms -= 200;
+ }
+ }
+
+ return s->state == usb_stream_ready ? 0 : -EFAULT;
+}
+
+
+/* stop */
+
+void usb_stream_stop(struct usb_stream_kernel *sk)
+{
+ int u;
+
+ if (!sk->s)
+ return;
+ for (u = 0; u < USB_STREAM_NURBS; ++u) {
+ usb_kill_urb(sk->inurb[u]);
+ usb_kill_urb(sk->outurb[u]);
+ }
+ sk->s->state = usb_stream_stopped;
+ msleep(400);
+}
diff --git a/sound/usb/usx2y/usb_stream.h b/sound/usb/usx2y/usb_stream.h
new file mode 100644
index 0000000000..73e57b341a
--- /dev/null
+++ b/sound/usb/usx2y/usb_stream.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __USB_STREAM_H
+#define __USB_STREAM_H
+
+#include <uapi/sound/usb_stream.h>
+
+#define USB_STREAM_NURBS 4
+#define USB_STREAM_URBDEPTH 4
+
+struct usb_stream_kernel {
+ struct usb_stream *s;
+
+ void *write_page;
+
+ unsigned int n_o_ps;
+
+ struct urb *inurb[USB_STREAM_NURBS];
+ struct urb *idle_inurb;
+ struct urb *completed_inurb;
+ struct urb *outurb[USB_STREAM_NURBS];
+ struct urb *idle_outurb;
+ struct urb *completed_outurb;
+ struct urb *i_urb;
+
+ int iso_frame_balance;
+
+ wait_queue_head_t sleep;
+
+ unsigned int out_phase;
+ unsigned int out_phase_peeked;
+ unsigned int freqn;
+};
+
+struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
+ struct usb_device *dev,
+ unsigned int in_endpoint,
+ unsigned int out_endpoint,
+ unsigned int sample_rate,
+ unsigned int use_packsize,
+ unsigned int period_frames,
+ unsigned int frame_size);
+void usb_stream_free(struct usb_stream_kernel *sk);
+int usb_stream_start(struct usb_stream_kernel *sk);
+void usb_stream_stop(struct usb_stream_kernel *sk);
+
+#endif /* __USB_STREAM_H */
diff --git a/sound/usb/usx2y/usbus428ctldefs.h b/sound/usb/usx2y/usbus428ctldefs.h
new file mode 100644
index 0000000000..9ba15d974e
--- /dev/null
+++ b/sound/usb/usx2y/usbus428ctldefs.h
@@ -0,0 +1,93 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ *
+ * Copyright (c) 2003 by Karsten Wiese <annabellesgarden@yahoo.de>
+ */
+
+enum E_IN84 {
+ E_FADER_0 = 0,
+ E_FADER_1,
+ E_FADER_2,
+ E_FADER_3,
+ E_FADER_4,
+ E_FADER_5,
+ E_FADER_6,
+ E_FADER_7,
+ E_FADER_M,
+ E_TRANSPORT,
+ E_MODIFIER = 10,
+ E_FILTER_SELECT,
+ E_SELECT,
+ E_MUTE,
+
+ E_SWITCH = 15,
+ E_WHEEL_GAIN,
+ E_WHEEL_FREQ,
+ E_WHEEL_Q,
+ E_WHEEL_PAN,
+ E_WHEEL = 20
+};
+
+#define T_RECORD 1
+#define T_PLAY 2
+#define T_STOP 4
+#define T_F_FWD 8
+#define T_REW 0x10
+#define T_SOLO 0x20
+#define T_REC 0x40
+#define T_NULL 0x80
+
+
+struct us428_ctls {
+ unsigned char fader[9];
+ unsigned char transport;
+ unsigned char modifier;
+ unsigned char filters_elect;
+ unsigned char select;
+ unsigned char mute;
+ unsigned char unknown;
+ unsigned char wswitch;
+ unsigned char wheel[5];
+};
+
+struct us428_set_byte {
+ unsigned char offset,
+ value;
+};
+
+enum {
+ ELT_VOLUME = 0,
+ ELT_LIGHT
+};
+
+struct usx2y_volume {
+ unsigned char channel,
+ lh,
+ ll,
+ rh,
+ rl;
+};
+
+struct us428_lights {
+ struct us428_set_byte light[7];
+};
+
+struct us428_p4out {
+ char type;
+ union {
+ struct usx2y_volume vol;
+ struct us428_lights lights;
+ } val;
+};
+
+#define N_US428_CTL_BUFS 16
+#define N_US428_P4OUT_BUFS 16
+struct us428ctls_sharedmem {
+ struct us428_ctls ctl_snapshot[N_US428_CTL_BUFS];
+ int ctl_snapshot_differs_at[N_US428_CTL_BUFS];
+ int ctl_snapshot_last, ctl_snapshot_red;
+ struct us428_p4out p4out[N_US428_P4OUT_BUFS];
+ int p4out_last, p4out_sent;
+};
+
+#define US428_SHAREDMEM_PAGES PAGE_ALIGN(sizeof(struct us428ctls_sharedmem))
diff --git a/sound/usb/usx2y/usbusx2y.c b/sound/usb/usx2y/usbusx2y.c
new file mode 100644
index 0000000000..52f4e66524
--- /dev/null
+++ b/sound/usb/usx2y/usbusx2y.c
@@ -0,0 +1,466 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * usbusx2y.c - ALSA USB US-428 Driver
+ *
+2005-04-14 Karsten Wiese
+ Version 0.8.7.2:
+ Call snd_card_free() instead of snd_card_free_in_thread() to prevent oops with dead keyboard symptom.
+ Tested ok with kernel 2.6.12-rc2.
+
+2004-12-14 Karsten Wiese
+ Version 0.8.7.1:
+ snd_pcm_open for rawusb pcm-devices now returns -EBUSY if called without rawusb's hwdep device being open.
+
+2004-12-02 Karsten Wiese
+ Version 0.8.7:
+ Use macro usb_maxpacket() for portability.
+
+2004-10-26 Karsten Wiese
+ Version 0.8.6:
+ wake_up() process waiting in usx2y_urbs_start() on error.
+
+2004-10-21 Karsten Wiese
+ Version 0.8.5:
+ nrpacks is runtime or compiletime configurable now with tested values from 1 to 4.
+
+2004-10-03 Karsten Wiese
+ Version 0.8.2:
+ Avoid any possible racing while in prepare callback.
+
+2004-09-30 Karsten Wiese
+ Version 0.8.0:
+ Simplified things and made ohci work again.
+
+2004-09-20 Karsten Wiese
+ Version 0.7.3:
+ Use usb_kill_urb() instead of deprecated (kernel 2.6.9) usb_unlink_urb().
+
+2004-07-13 Karsten Wiese
+ Version 0.7.1:
+ Don't sleep in START/STOP callbacks anymore.
+ us428 channels C/D not handled just for this version, sorry.
+
+2004-06-21 Karsten Wiese
+ Version 0.6.4:
+ Temporarely suspend midi input
+ to sanely call usb_set_interface() when setting format.
+
+2004-06-12 Karsten Wiese
+ Version 0.6.3:
+ Made it thus the following rule is enforced:
+ "All pcm substreams of one usx2y have to operate at the same rate & format."
+
+2004-04-06 Karsten Wiese
+ Version 0.6.0:
+ Runs on 2.6.5 kernel without any "--with-debug=" things.
+ us224 reported running.
+
+2004-01-14 Karsten Wiese
+ Version 0.5.1:
+ Runs with 2.6.1 kernel.
+
+2003-12-30 Karsten Wiese
+ Version 0.4.1:
+ Fix 24Bit 4Channel capturing for the us428.
+
+2003-11-27 Karsten Wiese, Martin Langer
+ Version 0.4:
+ us122 support.
+ us224 could be tested by uncommenting the sections containing USB_ID_US224
+
+2003-11-03 Karsten Wiese
+ Version 0.3:
+ 24Bit support.
+ "arecord -D hw:1 -c 2 -r 48000 -M -f S24_3LE|aplay -D hw:1 -c 2 -r 48000 -M -f S24_3LE" works.
+
+2003-08-22 Karsten Wiese
+ Version 0.0.8:
+ Removed EZUSB Firmware. First Stage Firmwaredownload is now done by tascam-firmware downloader.
+ See:
+ http://usb-midi-fw.sourceforge.net/tascam-firmware.tar.gz
+
+2003-06-18 Karsten Wiese
+ Version 0.0.5:
+ changed to compile with kernel 2.4.21 and alsa 0.9.4
+
+2002-10-16 Karsten Wiese
+ Version 0.0.4:
+ compiles again with alsa-current.
+ USB_ISO_ASAP not used anymore (most of the time), instead
+ urb->start_frame is calculated here now, some calls inside usb-driver don't need to happen anymore.
+
+ To get the best out of this:
+ Disable APM-support in the kernel as APM-BIOS calls (once each second) hard disable interrupt for many precious milliseconds.
+ This helped me much on my slowish PII 400 & PIII 500.
+ ACPI yet untested but might cause the same bad behaviour.
+ Use a kernel with lowlatency and preemptiv patches applied.
+ To autoload snd-usb-midi append a line
+ post-install snd-usb-us428 modprobe snd-usb-midi
+ to /etc/modules.conf.
+
+ known problems:
+ sliders, knobs, lights not yet handled except MASTER Volume slider.
+ "pcm -c 2" doesn't work. "pcm -c 2 -m direct_interleaved" does.
+ KDE3: "Enable full duplex operation" deadlocks.
+
+2002-08-31 Karsten Wiese
+ Version 0.0.3: audio also simplex;
+ simplifying: iso urbs only 1 packet, melted structs.
+ ASYNC_UNLINK not used anymore: no more crashes so far.....
+ for alsa 0.9 rc3.
+
+2002-08-09 Karsten Wiese
+ Version 0.0.2: midi works with snd-usb-midi, audio (only fullduplex now) with i.e. bristol.
+ The firmware has been sniffed from win2k us-428 driver 3.09.
+
+ * Copyright (c) 2002 - 2004 Karsten Wiese
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/usb.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+
+#include <sound/rawmidi.h>
+#include "usx2y.h"
+#include "usbusx2y.h"
+#include "usX2Yhwdep.h"
+
+MODULE_AUTHOR("Karsten Wiese <annabellesgarden@yahoo.de>");
+MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.8.7.2");
+MODULE_LICENSE("GPL");
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */
+static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS".");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS".");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS".");
+
+static int snd_usx2y_card_used[SNDRV_CARDS];
+
+static void snd_usx2y_card_private_free(struct snd_card *card);
+static void usx2y_unlinkseq(struct snd_usx2y_async_seq *s);
+
+/*
+ * pipe 4 is used for switching the lamps, setting samplerate, volumes ....
+ */
+static void i_usx2y_out04_int(struct urb *urb)
+{
+#ifdef CONFIG_SND_DEBUG
+ if (urb->status) {
+ int i;
+ struct usx2ydev *usx2y = urb->context;
+
+ for (i = 0; i < 10 && usx2y->as04.urb[i] != urb; i++)
+ ;
+ snd_printdd("%s urb %i status=%i\n", __func__, i, urb->status);
+ }
+#endif
+}
+
+static void i_usx2y_in04_int(struct urb *urb)
+{
+ int err = 0;
+ struct usx2ydev *usx2y = urb->context;
+ struct us428ctls_sharedmem *us428ctls = usx2y->us428ctls_sharedmem;
+ struct us428_p4out *p4out;
+ int i, j, n, diff, send;
+
+ usx2y->in04_int_calls++;
+
+ if (urb->status) {
+ snd_printdd("Interrupt Pipe 4 came back with status=%i\n", urb->status);
+ return;
+ }
+
+ // printk("%i:0x%02X ", 8, (int)((unsigned char*)usx2y->in04_buf)[8]); Master volume shows 0 here if fader is at max during boot ?!?
+ if (us428ctls) {
+ diff = -1;
+ if (us428ctls->ctl_snapshot_last == -2) {
+ diff = 0;
+ memcpy(usx2y->in04_last, usx2y->in04_buf, sizeof(usx2y->in04_last));
+ us428ctls->ctl_snapshot_last = -1;
+ } else {
+ for (i = 0; i < 21; i++) {
+ if (usx2y->in04_last[i] != ((char *)usx2y->in04_buf)[i]) {
+ if (diff < 0)
+ diff = i;
+ usx2y->in04_last[i] = ((char *)usx2y->in04_buf)[i];
+ }
+ }
+ }
+ if (diff >= 0) {
+ n = us428ctls->ctl_snapshot_last + 1;
+ if (n >= N_US428_CTL_BUFS || n < 0)
+ n = 0;
+ memcpy(us428ctls->ctl_snapshot + n, usx2y->in04_buf, sizeof(us428ctls->ctl_snapshot[0]));
+ us428ctls->ctl_snapshot_differs_at[n] = diff;
+ us428ctls->ctl_snapshot_last = n;
+ wake_up(&usx2y->us428ctls_wait_queue_head);
+ }
+ }
+
+ if (usx2y->us04) {
+ if (!usx2y->us04->submitted) {
+ do {
+ err = usb_submit_urb(usx2y->us04->urb[usx2y->us04->submitted++], GFP_ATOMIC);
+ } while (!err && usx2y->us04->submitted < usx2y->us04->len);
+ }
+ } else {
+ if (us428ctls && us428ctls->p4out_last >= 0 && us428ctls->p4out_last < N_US428_P4OUT_BUFS) {
+ if (us428ctls->p4out_last != us428ctls->p4out_sent) {
+ send = us428ctls->p4out_sent + 1;
+ if (send >= N_US428_P4OUT_BUFS)
+ send = 0;
+ for (j = 0; j < URBS_ASYNC_SEQ && !err; ++j) {
+ if (!usx2y->as04.urb[j]->status) {
+ p4out = us428ctls->p4out + send; // FIXME if more than 1 p4out is new, 1 gets lost.
+ usb_fill_bulk_urb(usx2y->as04.urb[j], usx2y->dev,
+ usb_sndbulkpipe(usx2y->dev, 0x04), &p4out->val.vol,
+ p4out->type == ELT_LIGHT ? sizeof(struct us428_lights) : 5,
+ i_usx2y_out04_int, usx2y);
+ err = usb_submit_urb(usx2y->as04.urb[j], GFP_ATOMIC);
+ us428ctls->p4out_sent = send;
+ break;
+ }
+ }
+ }
+ }
+ }
+
+ if (err)
+ snd_printk(KERN_ERR "in04_int() usb_submit_urb err=%i\n", err);
+
+ urb->dev = usx2y->dev;
+ usb_submit_urb(urb, GFP_ATOMIC);
+}
+
+/*
+ * Prepare some urbs
+ */
+int usx2y_async_seq04_init(struct usx2ydev *usx2y)
+{
+ int err = 0, i;
+
+ if (WARN_ON(usx2y->as04.buffer))
+ return -EBUSY;
+
+ usx2y->as04.buffer = kmalloc_array(URBS_ASYNC_SEQ,
+ URB_DATA_LEN_ASYNC_SEQ, GFP_KERNEL);
+ if (!usx2y->as04.buffer) {
+ err = -ENOMEM;
+ } else {
+ for (i = 0; i < URBS_ASYNC_SEQ; ++i) {
+ usx2y->as04.urb[i] = usb_alloc_urb(0, GFP_KERNEL);
+ if (!usx2y->as04.urb[i]) {
+ err = -ENOMEM;
+ break;
+ }
+ usb_fill_bulk_urb(usx2y->as04.urb[i], usx2y->dev,
+ usb_sndbulkpipe(usx2y->dev, 0x04),
+ usx2y->as04.buffer + URB_DATA_LEN_ASYNC_SEQ * i, 0,
+ i_usx2y_out04_int, usx2y);
+ err = usb_urb_ep_type_check(usx2y->as04.urb[i]);
+ if (err < 0)
+ break;
+ }
+ }
+ if (err)
+ usx2y_unlinkseq(&usx2y->as04);
+ return err;
+}
+
+int usx2y_in04_init(struct usx2ydev *usx2y)
+{
+ int err;
+
+ if (WARN_ON(usx2y->in04_urb))
+ return -EBUSY;
+
+ usx2y->in04_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!usx2y->in04_urb) {
+ err = -ENOMEM;
+ goto error;
+ }
+
+ usx2y->in04_buf = kmalloc(21, GFP_KERNEL);
+ if (!usx2y->in04_buf) {
+ err = -ENOMEM;
+ goto error;
+ }
+
+ init_waitqueue_head(&usx2y->in04_wait_queue);
+ usb_fill_int_urb(usx2y->in04_urb, usx2y->dev, usb_rcvintpipe(usx2y->dev, 0x4),
+ usx2y->in04_buf, 21,
+ i_usx2y_in04_int, usx2y,
+ 10);
+ if (usb_urb_ep_type_check(usx2y->in04_urb)) {
+ err = -EINVAL;
+ goto error;
+ }
+ return usb_submit_urb(usx2y->in04_urb, GFP_KERNEL);
+
+ error:
+ kfree(usx2y->in04_buf);
+ usb_free_urb(usx2y->in04_urb);
+ usx2y->in04_buf = NULL;
+ usx2y->in04_urb = NULL;
+ return err;
+}
+
+static void usx2y_unlinkseq(struct snd_usx2y_async_seq *s)
+{
+ int i;
+
+ for (i = 0; i < URBS_ASYNC_SEQ; ++i) {
+ if (!s->urb[i])
+ continue;
+ usb_kill_urb(s->urb[i]);
+ usb_free_urb(s->urb[i]);
+ s->urb[i] = NULL;
+ }
+ kfree(s->buffer);
+ s->buffer = NULL;
+}
+
+static const struct usb_device_id snd_usx2y_usb_id_table[] = {
+ {
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = 0x1604,
+ .idProduct = USB_ID_US428
+ },
+ {
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = 0x1604,
+ .idProduct = USB_ID_US122
+ },
+ {
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = 0x1604,
+ .idProduct = USB_ID_US224
+ },
+ { /* terminator */ }
+};
+MODULE_DEVICE_TABLE(usb, snd_usx2y_usb_id_table);
+
+static int usx2y_create_card(struct usb_device *device,
+ struct usb_interface *intf,
+ struct snd_card **cardp)
+{
+ int dev;
+ struct snd_card *card;
+ int err;
+
+ for (dev = 0; dev < SNDRV_CARDS; ++dev)
+ if (enable[dev] && !snd_usx2y_card_used[dev])
+ break;
+ if (dev >= SNDRV_CARDS)
+ return -ENODEV;
+ err = snd_card_new(&intf->dev, index[dev], id[dev], THIS_MODULE,
+ sizeof(struct usx2ydev), &card);
+ if (err < 0)
+ return err;
+ snd_usx2y_card_used[usx2y(card)->card_index = dev] = 1;
+ card->private_free = snd_usx2y_card_private_free;
+ usx2y(card)->dev = device;
+ init_waitqueue_head(&usx2y(card)->prepare_wait_queue);
+ init_waitqueue_head(&usx2y(card)->us428ctls_wait_queue_head);
+ mutex_init(&usx2y(card)->pcm_mutex);
+ INIT_LIST_HEAD(&usx2y(card)->midi_list);
+ strcpy(card->driver, "USB "NAME_ALLCAPS"");
+ sprintf(card->shortname, "TASCAM "NAME_ALLCAPS"");
+ sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)",
+ card->shortname,
+ le16_to_cpu(device->descriptor.idVendor),
+ le16_to_cpu(device->descriptor.idProduct),
+ 0,//us428(card)->usbmidi.ifnum,
+ usx2y(card)->dev->bus->busnum, usx2y(card)->dev->devnum);
+ *cardp = card;
+ return 0;
+}
+
+static void snd_usx2y_card_private_free(struct snd_card *card)
+{
+ struct usx2ydev *usx2y = usx2y(card);
+
+ kfree(usx2y->in04_buf);
+ usb_free_urb(usx2y->in04_urb);
+ if (usx2y->us428ctls_sharedmem)
+ free_pages_exact(usx2y->us428ctls_sharedmem,
+ US428_SHAREDMEM_PAGES);
+ if (usx2y->card_index >= 0 && usx2y->card_index < SNDRV_CARDS)
+ snd_usx2y_card_used[usx2y->card_index] = 0;
+}
+
+static void snd_usx2y_disconnect(struct usb_interface *intf)
+{
+ struct snd_card *card;
+ struct usx2ydev *usx2y;
+ struct list_head *p;
+
+ card = usb_get_intfdata(intf);
+ if (!card)
+ return;
+ usx2y = usx2y(card);
+ usx2y->chip_status = USX2Y_STAT_CHIP_HUP;
+ usx2y_unlinkseq(&usx2y->as04);
+ usb_kill_urb(usx2y->in04_urb);
+ snd_card_disconnect(card);
+
+ /* release the midi resources */
+ list_for_each(p, &usx2y->midi_list) {
+ snd_usbmidi_disconnect(p);
+ }
+ if (usx2y->us428ctls_sharedmem)
+ wake_up(&usx2y->us428ctls_wait_queue_head);
+ snd_card_free(card);
+}
+
+static int snd_usx2y_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_device *device = interface_to_usbdev(intf);
+ struct snd_card *card;
+ int err;
+
+ if (le16_to_cpu(device->descriptor.idVendor) != 0x1604 ||
+ (le16_to_cpu(device->descriptor.idProduct) != USB_ID_US122 &&
+ le16_to_cpu(device->descriptor.idProduct) != USB_ID_US224 &&
+ le16_to_cpu(device->descriptor.idProduct) != USB_ID_US428))
+ return -EINVAL;
+
+ err = usx2y_create_card(device, intf, &card);
+ if (err < 0)
+ return err;
+ err = usx2y_hwdep_new(card, device);
+ if (err < 0)
+ goto error;
+ err = snd_card_register(card);
+ if (err < 0)
+ goto error;
+
+ dev_set_drvdata(&intf->dev, card);
+ return 0;
+
+ error:
+ snd_card_free(card);
+ return err;
+}
+
+static struct usb_driver snd_usx2y_usb_driver = {
+ .name = "snd-usb-usx2y",
+ .probe = snd_usx2y_probe,
+ .disconnect = snd_usx2y_disconnect,
+ .id_table = snd_usx2y_usb_id_table,
+};
+module_usb_driver(snd_usx2y_usb_driver);
diff --git a/sound/usb/usx2y/usbusx2y.h b/sound/usb/usx2y/usbusx2y.h
new file mode 100644
index 0000000000..8d82f5cc2f
--- /dev/null
+++ b/sound/usb/usx2y/usbusx2y.h
@@ -0,0 +1,88 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef USBUSX2Y_H
+#define USBUSX2Y_H
+#include "../usbaudio.h"
+#include "../midi.h"
+#include "usbus428ctldefs.h"
+
+#define NRURBS 2
+
+
+#define URBS_ASYNC_SEQ 10
+#define URB_DATA_LEN_ASYNC_SEQ 32
+struct snd_usx2y_async_seq {
+ struct urb *urb[URBS_ASYNC_SEQ];
+ char *buffer;
+};
+
+struct snd_usx2y_urb_seq {
+ int submitted;
+ int len;
+ struct urb *urb[];
+};
+
+#include "usx2yhwdeppcm.h"
+
+struct usx2ydev {
+ struct usb_device *dev;
+ int card_index;
+ int stride;
+ struct urb *in04_urb;
+ void *in04_buf;
+ char in04_last[24];
+ unsigned int in04_int_calls;
+ struct snd_usx2y_urb_seq *us04;
+ wait_queue_head_t in04_wait_queue;
+ struct snd_usx2y_async_seq as04;
+ unsigned int rate,
+ format;
+ int chip_status;
+ struct mutex pcm_mutex;
+ struct us428ctls_sharedmem *us428ctls_sharedmem;
+ int wait_iso_frame;
+ wait_queue_head_t us428ctls_wait_queue_head;
+ struct snd_usx2y_hwdep_pcm_shm *hwdep_pcm_shm;
+ struct snd_usx2y_substream *subs[4];
+ struct snd_usx2y_substream * volatile prepare_subs;
+ wait_queue_head_t prepare_wait_queue;
+ struct list_head midi_list;
+ int pcm_devs;
+};
+
+
+struct snd_usx2y_substream {
+ struct usx2ydev *usx2y;
+ struct snd_pcm_substream *pcm_substream;
+
+ int endpoint;
+ unsigned int maxpacksize; /* max packet size in bytes */
+
+ atomic_t state;
+#define STATE_STOPPED 0
+#define STATE_STARTING1 1
+#define STATE_STARTING2 2
+#define STATE_STARTING3 3
+#define STATE_PREPARED 4
+#define STATE_PRERUNNING 6
+#define STATE_RUNNING 8
+
+ int hwptr; /* free frame position in the buffer (only for playback) */
+ int hwptr_done; /* processed frame position in the buffer */
+ int transfer_done; /* processed frames since last period update */
+
+ struct urb *urb[NRURBS]; /* data urb table */
+ struct urb *completed_urb;
+ char *tmpbuf; /* temporary buffer for playback */
+};
+
+
+#define usx2y(c) ((struct usx2ydev *)(c)->private_data)
+
+int usx2y_audio_create(struct snd_card *card);
+
+int usx2y_async_seq04_init(struct usx2ydev *usx2y);
+int usx2y_in04_init(struct usx2ydev *usx2y);
+
+#define NAME_ALLCAPS "US-X2Y"
+
+#endif
diff --git a/sound/usb/usx2y/usbusx2yaudio.c b/sound/usb/usx2y/usbusx2yaudio.c
new file mode 100644
index 0000000000..5197599e7a
--- /dev/null
+++ b/sound/usb/usx2y/usbusx2yaudio.c
@@ -0,0 +1,1033 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * US-X2Y AUDIO
+ * Copyright (c) 2002-2004 by Karsten Wiese
+ *
+ * based on
+ *
+ * (Tentative) USB Audio Driver for ALSA
+ *
+ * Main and PCM part
+ *
+ * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
+ *
+ * Many codes borrowed from audio.c by
+ * Alan Cox (alan@lxorguk.ukuu.org.uk)
+ * Thomas Sailer (sailer@ife.ee.ethz.ch)
+ */
+
+
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+#include <linux/moduleparam.h>
+#include <sound/core.h>
+#include <sound/info.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include "usx2y.h"
+#include "usbusx2y.h"
+
+/* Default value used for nr of packs per urb.
+ * 1 to 4 have been tested ok on uhci.
+ * To use 3 on ohci, you'd need a patch:
+ * look for "0000425-linux-2.6.9-rc4-mm1_ohci-hcd.patch.gz" on
+ * "https://bugtrack.alsa-project.org/alsa-bug/bug_view_page.php?bug_id=0000425"
+ *
+ * 1, 2 and 4 work out of the box on ohci, if I recall correctly.
+ * Bigger is safer operation, smaller gives lower latencies.
+ */
+#define USX2Y_NRPACKS 4
+
+/* If your system works ok with this module's parameter
+ * nrpacks set to 1, you might as well comment
+ * this define out, and thereby produce smaller, faster code.
+ * You'd also set USX2Y_NRPACKS to 1 then.
+ */
+#define USX2Y_NRPACKS_VARIABLE 1
+
+#ifdef USX2Y_NRPACKS_VARIABLE
+static int nrpacks = USX2Y_NRPACKS; /* number of packets per urb */
+#define nr_of_packs() nrpacks
+module_param(nrpacks, int, 0444);
+MODULE_PARM_DESC(nrpacks, "Number of packets per URB.");
+#else
+#define nr_of_packs() USX2Y_NRPACKS
+#endif
+
+static int usx2y_urb_capt_retire(struct snd_usx2y_substream *subs)
+{
+ struct urb *urb = subs->completed_urb;
+ struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
+ unsigned char *cp;
+ int i, len, lens = 0, hwptr_done = subs->hwptr_done;
+ int cnt, blen;
+ struct usx2ydev *usx2y = subs->usx2y;
+
+ for (i = 0; i < nr_of_packs(); i++) {
+ cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset;
+ if (urb->iso_frame_desc[i].status) { /* active? hmm, skip this */
+ snd_printk(KERN_ERR
+ "active frame status %i. Most probably some hardware problem.\n",
+ urb->iso_frame_desc[i].status);
+ return urb->iso_frame_desc[i].status;
+ }
+ len = urb->iso_frame_desc[i].actual_length / usx2y->stride;
+ if (!len) {
+ snd_printd("0 == len ERROR!\n");
+ continue;
+ }
+
+ /* copy a data chunk */
+ if ((hwptr_done + len) > runtime->buffer_size) {
+ cnt = runtime->buffer_size - hwptr_done;
+ blen = cnt * usx2y->stride;
+ memcpy(runtime->dma_area + hwptr_done * usx2y->stride, cp, blen);
+ memcpy(runtime->dma_area, cp + blen, len * usx2y->stride - blen);
+ } else {
+ memcpy(runtime->dma_area + hwptr_done * usx2y->stride, cp,
+ len * usx2y->stride);
+ }
+ lens += len;
+ hwptr_done += len;
+ if (hwptr_done >= runtime->buffer_size)
+ hwptr_done -= runtime->buffer_size;
+ }
+
+ subs->hwptr_done = hwptr_done;
+ subs->transfer_done += lens;
+ /* update the pointer, call callback if necessary */
+ if (subs->transfer_done >= runtime->period_size) {
+ subs->transfer_done -= runtime->period_size;
+ snd_pcm_period_elapsed(subs->pcm_substream);
+ }
+ return 0;
+}
+
+/*
+ * prepare urb for playback data pipe
+ *
+ * we copy the data directly from the pcm buffer.
+ * the current position to be copied is held in hwptr field.
+ * since a urb can handle only a single linear buffer, if the total
+ * transferred area overflows the buffer boundary, we cannot send
+ * it directly from the buffer. thus the data is once copied to
+ * a temporary buffer and urb points to that.
+ */
+static int usx2y_urb_play_prepare(struct snd_usx2y_substream *subs,
+ struct urb *cap_urb,
+ struct urb *urb)
+{
+ struct usx2ydev *usx2y = subs->usx2y;
+ struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
+ int count, counts, pack, len;
+
+ count = 0;
+ for (pack = 0; pack < nr_of_packs(); pack++) {
+ /* calculate the size of a packet */
+ counts = cap_urb->iso_frame_desc[pack].actual_length / usx2y->stride;
+ count += counts;
+ if (counts < 43 || counts > 50) {
+ snd_printk(KERN_ERR "should not be here with counts=%i\n", counts);
+ return -EPIPE;
+ }
+ /* set up descriptor */
+ urb->iso_frame_desc[pack].offset = pack ?
+ urb->iso_frame_desc[pack - 1].offset +
+ urb->iso_frame_desc[pack - 1].length :
+ 0;
+ urb->iso_frame_desc[pack].length = cap_urb->iso_frame_desc[pack].actual_length;
+ }
+ if (atomic_read(&subs->state) >= STATE_PRERUNNING) {
+ if (subs->hwptr + count > runtime->buffer_size) {
+ /* err, the transferred area goes over buffer boundary.
+ * copy the data to the temp buffer.
+ */
+ len = runtime->buffer_size - subs->hwptr;
+ urb->transfer_buffer = subs->tmpbuf;
+ memcpy(subs->tmpbuf, runtime->dma_area +
+ subs->hwptr * usx2y->stride, len * usx2y->stride);
+ memcpy(subs->tmpbuf + len * usx2y->stride,
+ runtime->dma_area, (count - len) * usx2y->stride);
+ subs->hwptr += count;
+ subs->hwptr -= runtime->buffer_size;
+ } else {
+ /* set the buffer pointer */
+ urb->transfer_buffer = runtime->dma_area + subs->hwptr * usx2y->stride;
+ subs->hwptr += count;
+ if (subs->hwptr >= runtime->buffer_size)
+ subs->hwptr -= runtime->buffer_size;
+ }
+ } else {
+ urb->transfer_buffer = subs->tmpbuf;
+ }
+ urb->transfer_buffer_length = count * usx2y->stride;
+ return 0;
+}
+
+/*
+ * process after playback data complete
+ *
+ * update the current position and call callback if a period is processed.
+ */
+static void usx2y_urb_play_retire(struct snd_usx2y_substream *subs, struct urb *urb)
+{
+ struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
+ int len = urb->actual_length / subs->usx2y->stride;
+
+ subs->transfer_done += len;
+ subs->hwptr_done += len;
+ if (subs->hwptr_done >= runtime->buffer_size)
+ subs->hwptr_done -= runtime->buffer_size;
+ if (subs->transfer_done >= runtime->period_size) {
+ subs->transfer_done -= runtime->period_size;
+ snd_pcm_period_elapsed(subs->pcm_substream);
+ }
+}
+
+static int usx2y_urb_submit(struct snd_usx2y_substream *subs, struct urb *urb, int frame)
+{
+ int err;
+
+ if (!urb)
+ return -ENODEV;
+ urb->start_frame = frame + NRURBS * nr_of_packs(); // let hcd do rollover sanity checks
+ urb->hcpriv = NULL;
+ urb->dev = subs->usx2y->dev; /* we need to set this at each time */
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err < 0) {
+ snd_printk(KERN_ERR "usb_submit_urb() returned %i\n", err);
+ return err;
+ }
+ return 0;
+}
+
+static int usx2y_usbframe_complete(struct snd_usx2y_substream *capsubs,
+ struct snd_usx2y_substream *playbacksubs,
+ int frame)
+{
+ int err, state;
+ struct urb *urb = playbacksubs->completed_urb;
+
+ state = atomic_read(&playbacksubs->state);
+ if (urb) {
+ if (state == STATE_RUNNING)
+ usx2y_urb_play_retire(playbacksubs, urb);
+ else if (state >= STATE_PRERUNNING)
+ atomic_inc(&playbacksubs->state);
+ } else {
+ switch (state) {
+ case STATE_STARTING1:
+ urb = playbacksubs->urb[0];
+ atomic_inc(&playbacksubs->state);
+ break;
+ case STATE_STARTING2:
+ urb = playbacksubs->urb[1];
+ atomic_inc(&playbacksubs->state);
+ break;
+ }
+ }
+ if (urb) {
+ err = usx2y_urb_play_prepare(playbacksubs, capsubs->completed_urb, urb);
+ if (err)
+ return err;
+ err = usx2y_urb_submit(playbacksubs, urb, frame);
+ if (err)
+ return err;
+ }
+
+ playbacksubs->completed_urb = NULL;
+
+ state = atomic_read(&capsubs->state);
+ if (state >= STATE_PREPARED) {
+ if (state == STATE_RUNNING) {
+ err = usx2y_urb_capt_retire(capsubs);
+ if (err)
+ return err;
+ } else if (state >= STATE_PRERUNNING) {
+ atomic_inc(&capsubs->state);
+ }
+ err = usx2y_urb_submit(capsubs, capsubs->completed_urb, frame);
+ if (err)
+ return err;
+ }
+ capsubs->completed_urb = NULL;
+ return 0;
+}
+
+static void usx2y_clients_stop(struct usx2ydev *usx2y)
+{
+ struct snd_usx2y_substream *subs;
+ struct urb *urb;
+ int s, u;
+
+ for (s = 0; s < 4; s++) {
+ subs = usx2y->subs[s];
+ if (subs) {
+ snd_printdd("%i %p state=%i\n", s, subs, atomic_read(&subs->state));
+ atomic_set(&subs->state, STATE_STOPPED);
+ }
+ }
+ for (s = 0; s < 4; s++) {
+ subs = usx2y->subs[s];
+ if (subs) {
+ if (atomic_read(&subs->state) >= STATE_PRERUNNING)
+ snd_pcm_stop_xrun(subs->pcm_substream);
+ for (u = 0; u < NRURBS; u++) {
+ urb = subs->urb[u];
+ if (urb)
+ snd_printdd("%i status=%i start_frame=%i\n",
+ u, urb->status, urb->start_frame);
+ }
+ }
+ }
+ usx2y->prepare_subs = NULL;
+ wake_up(&usx2y->prepare_wait_queue);
+}
+
+static void usx2y_error_urb_status(struct usx2ydev *usx2y,
+ struct snd_usx2y_substream *subs, struct urb *urb)
+{
+ snd_printk(KERN_ERR "ep=%i stalled with status=%i\n", subs->endpoint, urb->status);
+ urb->status = 0;
+ usx2y_clients_stop(usx2y);
+}
+
+static void i_usx2y_urb_complete(struct urb *urb)
+{
+ struct snd_usx2y_substream *subs = urb->context;
+ struct usx2ydev *usx2y = subs->usx2y;
+ struct snd_usx2y_substream *capsubs, *playbacksubs;
+
+ if (unlikely(atomic_read(&subs->state) < STATE_PREPARED)) {
+ snd_printdd("hcd_frame=%i ep=%i%s status=%i start_frame=%i\n",
+ usb_get_current_frame_number(usx2y->dev),
+ subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out",
+ urb->status, urb->start_frame);
+ return;
+ }
+ if (unlikely(urb->status)) {
+ usx2y_error_urb_status(usx2y, subs, urb);
+ return;
+ }
+
+ subs->completed_urb = urb;
+
+ capsubs = usx2y->subs[SNDRV_PCM_STREAM_CAPTURE];
+ playbacksubs = usx2y->subs[SNDRV_PCM_STREAM_PLAYBACK];
+
+ if (capsubs->completed_urb &&
+ atomic_read(&capsubs->state) >= STATE_PREPARED &&
+ (playbacksubs->completed_urb ||
+ atomic_read(&playbacksubs->state) < STATE_PREPARED)) {
+ if (!usx2y_usbframe_complete(capsubs, playbacksubs, urb->start_frame)) {
+ usx2y->wait_iso_frame += nr_of_packs();
+ } else {
+ snd_printdd("\n");
+ usx2y_clients_stop(usx2y);
+ }
+ }
+}
+
+static void usx2y_urbs_set_complete(struct usx2ydev *usx2y,
+ void (*complete)(struct urb *))
+{
+ struct snd_usx2y_substream *subs;
+ struct urb *urb;
+ int s, u;
+
+ for (s = 0; s < 4; s++) {
+ subs = usx2y->subs[s];
+ if (subs) {
+ for (u = 0; u < NRURBS; u++) {
+ urb = subs->urb[u];
+ if (urb)
+ urb->complete = complete;
+ }
+ }
+ }
+}
+
+static void usx2y_subs_startup_finish(struct usx2ydev *usx2y)
+{
+ usx2y_urbs_set_complete(usx2y, i_usx2y_urb_complete);
+ usx2y->prepare_subs = NULL;
+}
+
+static void i_usx2y_subs_startup(struct urb *urb)
+{
+ struct snd_usx2y_substream *subs = urb->context;
+ struct usx2ydev *usx2y = subs->usx2y;
+ struct snd_usx2y_substream *prepare_subs = usx2y->prepare_subs;
+
+ if (prepare_subs) {
+ if (urb->start_frame == prepare_subs->urb[0]->start_frame) {
+ usx2y_subs_startup_finish(usx2y);
+ atomic_inc(&prepare_subs->state);
+ wake_up(&usx2y->prepare_wait_queue);
+ }
+ }
+
+ i_usx2y_urb_complete(urb);
+}
+
+static void usx2y_subs_prepare(struct snd_usx2y_substream *subs)
+{
+ snd_printdd("usx2y_substream_prepare(%p) ep=%i urb0=%p urb1=%p\n",
+ subs, subs->endpoint, subs->urb[0], subs->urb[1]);
+ /* reset the pointer */
+ subs->hwptr = 0;
+ subs->hwptr_done = 0;
+ subs->transfer_done = 0;
+}
+
+static void usx2y_urb_release(struct urb **urb, int free_tb)
+{
+ if (*urb) {
+ usb_kill_urb(*urb);
+ if (free_tb)
+ kfree((*urb)->transfer_buffer);
+ usb_free_urb(*urb);
+ *urb = NULL;
+ }
+}
+
+/*
+ * release a substreams urbs
+ */
+static void usx2y_urbs_release(struct snd_usx2y_substream *subs)
+{
+ int i;
+
+ snd_printdd("%s %i\n", __func__, subs->endpoint);
+ for (i = 0; i < NRURBS; i++)
+ usx2y_urb_release(subs->urb + i,
+ subs != subs->usx2y->subs[SNDRV_PCM_STREAM_PLAYBACK]);
+
+ kfree(subs->tmpbuf);
+ subs->tmpbuf = NULL;
+}
+
+/*
+ * initialize a substream's urbs
+ */
+static int usx2y_urbs_allocate(struct snd_usx2y_substream *subs)
+{
+ int i;
+ unsigned int pipe;
+ int is_playback = subs == subs->usx2y->subs[SNDRV_PCM_STREAM_PLAYBACK];
+ struct usb_device *dev = subs->usx2y->dev;
+ struct urb **purb;
+
+ pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) :
+ usb_rcvisocpipe(dev, subs->endpoint);
+ subs->maxpacksize = usb_maxpacket(dev, pipe);
+ if (!subs->maxpacksize)
+ return -EINVAL;
+
+ if (is_playback && !subs->tmpbuf) { /* allocate a temporary buffer for playback */
+ subs->tmpbuf = kcalloc(nr_of_packs(), subs->maxpacksize, GFP_KERNEL);
+ if (!subs->tmpbuf)
+ return -ENOMEM;
+ }
+ /* allocate and initialize data urbs */
+ for (i = 0; i < NRURBS; i++) {
+ purb = subs->urb + i;
+ if (*purb) {
+ usb_kill_urb(*purb);
+ continue;
+ }
+ *purb = usb_alloc_urb(nr_of_packs(), GFP_KERNEL);
+ if (!*purb) {
+ usx2y_urbs_release(subs);
+ return -ENOMEM;
+ }
+ if (!is_playback && !(*purb)->transfer_buffer) {
+ /* allocate a capture buffer per urb */
+ (*purb)->transfer_buffer =
+ kmalloc_array(subs->maxpacksize,
+ nr_of_packs(), GFP_KERNEL);
+ if (!(*purb)->transfer_buffer) {
+ usx2y_urbs_release(subs);
+ return -ENOMEM;
+ }
+ }
+ (*purb)->dev = dev;
+ (*purb)->pipe = pipe;
+ (*purb)->number_of_packets = nr_of_packs();
+ (*purb)->context = subs;
+ (*purb)->interval = 1;
+ (*purb)->complete = i_usx2y_subs_startup;
+ }
+ return 0;
+}
+
+static void usx2y_subs_startup(struct snd_usx2y_substream *subs)
+{
+ struct usx2ydev *usx2y = subs->usx2y;
+
+ usx2y->prepare_subs = subs;
+ subs->urb[0]->start_frame = -1;
+ wmb();
+ usx2y_urbs_set_complete(usx2y, i_usx2y_subs_startup);
+}
+
+static int usx2y_urbs_start(struct snd_usx2y_substream *subs)
+{
+ int i, err;
+ struct usx2ydev *usx2y = subs->usx2y;
+ struct urb *urb;
+ unsigned long pack;
+
+ err = usx2y_urbs_allocate(subs);
+ if (err < 0)
+ return err;
+ subs->completed_urb = NULL;
+ for (i = 0; i < 4; i++) {
+ struct snd_usx2y_substream *subs = usx2y->subs[i];
+
+ if (subs && atomic_read(&subs->state) >= STATE_PREPARED)
+ goto start;
+ }
+
+ start:
+ usx2y_subs_startup(subs);
+ for (i = 0; i < NRURBS; i++) {
+ urb = subs->urb[i];
+ if (usb_pipein(urb->pipe)) {
+ if (!i)
+ atomic_set(&subs->state, STATE_STARTING3);
+ urb->dev = usx2y->dev;
+ for (pack = 0; pack < nr_of_packs(); pack++) {
+ urb->iso_frame_desc[pack].offset = subs->maxpacksize * pack;
+ urb->iso_frame_desc[pack].length = subs->maxpacksize;
+ }
+ urb->transfer_buffer_length = subs->maxpacksize * nr_of_packs();
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err < 0) {
+ snd_printk(KERN_ERR "cannot submit datapipe for urb %d, err = %d\n", i, err);
+ err = -EPIPE;
+ goto cleanup;
+ } else {
+ if (!i)
+ usx2y->wait_iso_frame = urb->start_frame;
+ }
+ urb->transfer_flags = 0;
+ } else {
+ atomic_set(&subs->state, STATE_STARTING1);
+ break;
+ }
+ }
+ err = 0;
+ wait_event(usx2y->prepare_wait_queue, !usx2y->prepare_subs);
+ if (atomic_read(&subs->state) != STATE_PREPARED)
+ err = -EPIPE;
+
+ cleanup:
+ if (err) {
+ usx2y_subs_startup_finish(usx2y);
+ usx2y_clients_stop(usx2y); // something is completely wrong > stop everything
+ }
+ return err;
+}
+
+/*
+ * return the current pcm pointer. just return the hwptr_done value.
+ */
+static snd_pcm_uframes_t snd_usx2y_pcm_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_usx2y_substream *subs = substream->runtime->private_data;
+
+ return subs->hwptr_done;
+}
+
+/*
+ * start/stop substream
+ */
+static int snd_usx2y_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_usx2y_substream *subs = substream->runtime->private_data;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ snd_printdd("%s(START)\n", __func__);
+ if (atomic_read(&subs->state) == STATE_PREPARED &&
+ atomic_read(&subs->usx2y->subs[SNDRV_PCM_STREAM_CAPTURE]->state) >= STATE_PREPARED) {
+ atomic_set(&subs->state, STATE_PRERUNNING);
+ } else {
+ snd_printdd("\n");
+ return -EPIPE;
+ }
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ snd_printdd("%s(STOP)\n", __func__);
+ if (atomic_read(&subs->state) >= STATE_PRERUNNING)
+ atomic_set(&subs->state, STATE_PREPARED);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/*
+ * allocate a buffer, setup samplerate
+ *
+ * so far we use a physically linear buffer although packetize transfer
+ * doesn't need a continuous area.
+ * if sg buffer is supported on the later version of alsa, we'll follow
+ * that.
+ */
+struct s_c2 {
+ char c1, c2;
+};
+
+static const struct s_c2 setrate_44100[] = {
+ { 0x14, 0x08}, // this line sets 44100, well actually a little less
+ { 0x18, 0x40}, // only tascam / frontier design knows the further lines .......
+ { 0x18, 0x42},
+ { 0x18, 0x45},
+ { 0x18, 0x46},
+ { 0x18, 0x48},
+ { 0x18, 0x4A},
+ { 0x18, 0x4C},
+ { 0x18, 0x4E},
+ { 0x18, 0x50},
+ { 0x18, 0x52},
+ { 0x18, 0x54},
+ { 0x18, 0x56},
+ { 0x18, 0x58},
+ { 0x18, 0x5A},
+ { 0x18, 0x5C},
+ { 0x18, 0x5E},
+ { 0x18, 0x60},
+ { 0x18, 0x62},
+ { 0x18, 0x64},
+ { 0x18, 0x66},
+ { 0x18, 0x68},
+ { 0x18, 0x6A},
+ { 0x18, 0x6C},
+ { 0x18, 0x6E},
+ { 0x18, 0x70},
+ { 0x18, 0x72},
+ { 0x18, 0x74},
+ { 0x18, 0x76},
+ { 0x18, 0x78},
+ { 0x18, 0x7A},
+ { 0x18, 0x7C},
+ { 0x18, 0x7E}
+};
+
+static const struct s_c2 setrate_48000[] = {
+ { 0x14, 0x09}, // this line sets 48000, well actually a little less
+ { 0x18, 0x40}, // only tascam / frontier design knows the further lines .......
+ { 0x18, 0x42},
+ { 0x18, 0x45},
+ { 0x18, 0x46},
+ { 0x18, 0x48},
+ { 0x18, 0x4A},
+ { 0x18, 0x4C},
+ { 0x18, 0x4E},
+ { 0x18, 0x50},
+ { 0x18, 0x52},
+ { 0x18, 0x54},
+ { 0x18, 0x56},
+ { 0x18, 0x58},
+ { 0x18, 0x5A},
+ { 0x18, 0x5C},
+ { 0x18, 0x5E},
+ { 0x18, 0x60},
+ { 0x18, 0x62},
+ { 0x18, 0x64},
+ { 0x18, 0x66},
+ { 0x18, 0x68},
+ { 0x18, 0x6A},
+ { 0x18, 0x6C},
+ { 0x18, 0x6E},
+ { 0x18, 0x70},
+ { 0x18, 0x73},
+ { 0x18, 0x74},
+ { 0x18, 0x76},
+ { 0x18, 0x78},
+ { 0x18, 0x7A},
+ { 0x18, 0x7C},
+ { 0x18, 0x7E}
+};
+
+#define NOOF_SETRATE_URBS ARRAY_SIZE(setrate_48000)
+
+static void i_usx2y_04int(struct urb *urb)
+{
+ struct usx2ydev *usx2y = urb->context;
+
+ if (urb->status)
+ snd_printk(KERN_ERR "snd_usx2y_04int() urb->status=%i\n", urb->status);
+ if (!--usx2y->us04->len)
+ wake_up(&usx2y->in04_wait_queue);
+}
+
+static int usx2y_rate_set(struct usx2ydev *usx2y, int rate)
+{
+ int err = 0, i;
+ struct snd_usx2y_urb_seq *us = NULL;
+ int *usbdata = NULL;
+ const struct s_c2 *ra = rate == 48000 ? setrate_48000 : setrate_44100;
+ struct urb *urb;
+
+ if (usx2y->rate != rate) {
+ us = kzalloc(struct_size(us, urb, NOOF_SETRATE_URBS),
+ GFP_KERNEL);
+ if (!us) {
+ err = -ENOMEM;
+ goto cleanup;
+ }
+ usbdata = kmalloc_array(NOOF_SETRATE_URBS, sizeof(int),
+ GFP_KERNEL);
+ if (!usbdata) {
+ err = -ENOMEM;
+ goto cleanup;
+ }
+ for (i = 0; i < NOOF_SETRATE_URBS; ++i) {
+ us->urb[i] = usb_alloc_urb(0, GFP_KERNEL);
+ if (!us->urb[i]) {
+ err = -ENOMEM;
+ goto cleanup;
+ }
+ ((char *)(usbdata + i))[0] = ra[i].c1;
+ ((char *)(usbdata + i))[1] = ra[i].c2;
+ usb_fill_bulk_urb(us->urb[i], usx2y->dev, usb_sndbulkpipe(usx2y->dev, 4),
+ usbdata + i, 2, i_usx2y_04int, usx2y);
+ }
+ err = usb_urb_ep_type_check(us->urb[0]);
+ if (err < 0)
+ goto cleanup;
+ us->submitted = 0;
+ us->len = NOOF_SETRATE_URBS;
+ usx2y->us04 = us;
+ wait_event_timeout(usx2y->in04_wait_queue, !us->len, HZ);
+ usx2y->us04 = NULL;
+ if (us->len)
+ err = -ENODEV;
+ cleanup:
+ if (us) {
+ us->submitted = 2*NOOF_SETRATE_URBS;
+ for (i = 0; i < NOOF_SETRATE_URBS; ++i) {
+ urb = us->urb[i];
+ if (!urb)
+ continue;
+ if (urb->status) {
+ if (!err)
+ err = -ENODEV;
+ usb_kill_urb(urb);
+ }
+ usb_free_urb(urb);
+ }
+ usx2y->us04 = NULL;
+ kfree(usbdata);
+ kfree(us);
+ if (!err)
+ usx2y->rate = rate;
+ }
+ }
+
+ return err;
+}
+
+static int usx2y_format_set(struct usx2ydev *usx2y, snd_pcm_format_t format)
+{
+ int alternate, err;
+ struct list_head *p;
+
+ if (format == SNDRV_PCM_FORMAT_S24_3LE) {
+ alternate = 2;
+ usx2y->stride = 6;
+ } else {
+ alternate = 1;
+ usx2y->stride = 4;
+ }
+ list_for_each(p, &usx2y->midi_list) {
+ snd_usbmidi_input_stop(p);
+ }
+ usb_kill_urb(usx2y->in04_urb);
+ err = usb_set_interface(usx2y->dev, 0, alternate);
+ if (err) {
+ snd_printk(KERN_ERR "usb_set_interface error\n");
+ return err;
+ }
+ usx2y->in04_urb->dev = usx2y->dev;
+ err = usb_submit_urb(usx2y->in04_urb, GFP_KERNEL);
+ list_for_each(p, &usx2y->midi_list) {
+ snd_usbmidi_input_start(p);
+ }
+ usx2y->format = format;
+ usx2y->rate = 0;
+ return err;
+}
+
+
+static int snd_usx2y_pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ int err = 0;
+ unsigned int rate = params_rate(hw_params);
+ snd_pcm_format_t format = params_format(hw_params);
+ struct snd_card *card = substream->pstr->pcm->card;
+ struct usx2ydev *dev = usx2y(card);
+ struct snd_usx2y_substream *subs;
+ struct snd_pcm_substream *test_substream;
+ int i;
+
+ mutex_lock(&usx2y(card)->pcm_mutex);
+ snd_printdd("snd_usx2y_hw_params(%p, %p)\n", substream, hw_params);
+ /* all pcm substreams off one usx2y have to operate at the same
+ * rate & format
+ */
+ for (i = 0; i < dev->pcm_devs * 2; i++) {
+ subs = dev->subs[i];
+ if (!subs)
+ continue;
+ test_substream = subs->pcm_substream;
+ if (!test_substream || test_substream == substream ||
+ !test_substream->runtime)
+ continue;
+ if ((test_substream->runtime->format &&
+ test_substream->runtime->format != format) ||
+ (test_substream->runtime->rate &&
+ test_substream->runtime->rate != rate)) {
+ err = -EINVAL;
+ goto error;
+ }
+ }
+
+ error:
+ mutex_unlock(&usx2y(card)->pcm_mutex);
+ return err;
+}
+
+/*
+ * free the buffer
+ */
+static int snd_usx2y_pcm_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_usx2y_substream *subs = runtime->private_data;
+ struct snd_usx2y_substream *cap_subs, *playback_subs;
+
+ mutex_lock(&subs->usx2y->pcm_mutex);
+ snd_printdd("snd_usx2y_hw_free(%p)\n", substream);
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ cap_subs = subs->usx2y->subs[SNDRV_PCM_STREAM_CAPTURE];
+ atomic_set(&subs->state, STATE_STOPPED);
+ usx2y_urbs_release(subs);
+ if (!cap_subs->pcm_substream ||
+ !cap_subs->pcm_substream->runtime ||
+ cap_subs->pcm_substream->runtime->state < SNDRV_PCM_STATE_PREPARED) {
+ atomic_set(&cap_subs->state, STATE_STOPPED);
+ usx2y_urbs_release(cap_subs);
+ }
+ } else {
+ playback_subs = subs->usx2y->subs[SNDRV_PCM_STREAM_PLAYBACK];
+ if (atomic_read(&playback_subs->state) < STATE_PREPARED) {
+ atomic_set(&subs->state, STATE_STOPPED);
+ usx2y_urbs_release(subs);
+ }
+ }
+ mutex_unlock(&subs->usx2y->pcm_mutex);
+ return 0;
+}
+
+/*
+ * prepare callback
+ *
+ * set format and initialize urbs
+ */
+static int snd_usx2y_pcm_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_usx2y_substream *subs = runtime->private_data;
+ struct usx2ydev *usx2y = subs->usx2y;
+ struct snd_usx2y_substream *capsubs = subs->usx2y->subs[SNDRV_PCM_STREAM_CAPTURE];
+ int err = 0;
+
+ snd_printdd("%s(%p)\n", __func__, substream);
+
+ mutex_lock(&usx2y->pcm_mutex);
+ usx2y_subs_prepare(subs);
+ // Start hardware streams
+ // SyncStream first....
+ if (atomic_read(&capsubs->state) < STATE_PREPARED) {
+ if (usx2y->format != runtime->format) {
+ err = usx2y_format_set(usx2y, runtime->format);
+ if (err < 0)
+ goto up_prepare_mutex;
+ }
+ if (usx2y->rate != runtime->rate) {
+ err = usx2y_rate_set(usx2y, runtime->rate);
+ if (err < 0)
+ goto up_prepare_mutex;
+ }
+ snd_printdd("starting capture pipe for %s\n", subs == capsubs ? "self" : "playpipe");
+ err = usx2y_urbs_start(capsubs);
+ if (err < 0)
+ goto up_prepare_mutex;
+ }
+
+ if (subs != capsubs && atomic_read(&subs->state) < STATE_PREPARED)
+ err = usx2y_urbs_start(subs);
+
+ up_prepare_mutex:
+ mutex_unlock(&usx2y->pcm_mutex);
+ return err;
+}
+
+static const struct snd_pcm_hardware snd_usx2y_2c = {
+ .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_BATCH),
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE,
+ .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
+ .rate_min = 44100,
+ .rate_max = 48000,
+ .channels_min = 2,
+ .channels_max = 2,
+ .buffer_bytes_max = (2*128*1024),
+ .period_bytes_min = 64,
+ .period_bytes_max = (128*1024),
+ .periods_min = 2,
+ .periods_max = 1024,
+ .fifo_size = 0
+};
+
+static int snd_usx2y_pcm_open(struct snd_pcm_substream *substream)
+{
+ struct snd_usx2y_substream *subs =
+ ((struct snd_usx2y_substream **)
+ snd_pcm_substream_chip(substream))[substream->stream];
+ struct snd_pcm_runtime *runtime = substream->runtime;
+
+ if (subs->usx2y->chip_status & USX2Y_STAT_CHIP_MMAP_PCM_URBS)
+ return -EBUSY;
+
+ runtime->hw = snd_usx2y_2c;
+ runtime->private_data = subs;
+ subs->pcm_substream = substream;
+ snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 1000, 200000);
+ return 0;
+}
+
+static int snd_usx2y_pcm_close(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_usx2y_substream *subs = runtime->private_data;
+
+ subs->pcm_substream = NULL;
+
+ return 0;
+}
+
+static const struct snd_pcm_ops snd_usx2y_pcm_ops = {
+ .open = snd_usx2y_pcm_open,
+ .close = snd_usx2y_pcm_close,
+ .hw_params = snd_usx2y_pcm_hw_params,
+ .hw_free = snd_usx2y_pcm_hw_free,
+ .prepare = snd_usx2y_pcm_prepare,
+ .trigger = snd_usx2y_pcm_trigger,
+ .pointer = snd_usx2y_pcm_pointer,
+};
+
+/*
+ * free a usb stream instance
+ */
+static void usx2y_audio_stream_free(struct snd_usx2y_substream **usx2y_substream)
+{
+ int stream;
+
+ for_each_pcm_streams(stream) {
+ kfree(usx2y_substream[stream]);
+ usx2y_substream[stream] = NULL;
+ }
+}
+
+static void snd_usx2y_pcm_private_free(struct snd_pcm *pcm)
+{
+ struct snd_usx2y_substream **usx2y_stream = pcm->private_data;
+
+ if (usx2y_stream)
+ usx2y_audio_stream_free(usx2y_stream);
+}
+
+static int usx2y_audio_stream_new(struct snd_card *card, int playback_endpoint, int capture_endpoint)
+{
+ struct snd_pcm *pcm;
+ int err, i;
+ struct snd_usx2y_substream **usx2y_substream =
+ usx2y(card)->subs + 2 * usx2y(card)->pcm_devs;
+
+ for (i = playback_endpoint ? SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE;
+ i <= SNDRV_PCM_STREAM_CAPTURE; ++i) {
+ usx2y_substream[i] = kzalloc(sizeof(struct snd_usx2y_substream), GFP_KERNEL);
+ if (!usx2y_substream[i])
+ return -ENOMEM;
+
+ usx2y_substream[i]->usx2y = usx2y(card);
+ }
+
+ if (playback_endpoint)
+ usx2y_substream[SNDRV_PCM_STREAM_PLAYBACK]->endpoint = playback_endpoint;
+ usx2y_substream[SNDRV_PCM_STREAM_CAPTURE]->endpoint = capture_endpoint;
+
+ err = snd_pcm_new(card, NAME_ALLCAPS" Audio", usx2y(card)->pcm_devs,
+ playback_endpoint ? 1 : 0, 1,
+ &pcm);
+ if (err < 0) {
+ usx2y_audio_stream_free(usx2y_substream);
+ return err;
+ }
+
+ if (playback_endpoint)
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_usx2y_pcm_ops);
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_usx2y_pcm_ops);
+
+ pcm->private_data = usx2y_substream;
+ pcm->private_free = snd_usx2y_pcm_private_free;
+ pcm->info_flags = 0;
+
+ sprintf(pcm->name, NAME_ALLCAPS" Audio #%d", usx2y(card)->pcm_devs);
+
+ if (playback_endpoint) {
+ snd_pcm_set_managed_buffer(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream,
+ SNDRV_DMA_TYPE_CONTINUOUS,
+ NULL,
+ 64*1024, 128*1024);
+ }
+
+ snd_pcm_set_managed_buffer(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
+ SNDRV_DMA_TYPE_CONTINUOUS,
+ NULL,
+ 64*1024, 128*1024);
+ usx2y(card)->pcm_devs++;
+
+ return 0;
+}
+
+/*
+ * create a chip instance and set its names.
+ */
+int usx2y_audio_create(struct snd_card *card)
+{
+ int err;
+
+ err = usx2y_audio_stream_new(card, 0xA, 0x8);
+ if (err < 0)
+ return err;
+ if (le16_to_cpu(usx2y(card)->dev->descriptor.idProduct) == USB_ID_US428) {
+ err = usx2y_audio_stream_new(card, 0, 0xA);
+ if (err < 0)
+ return err;
+ }
+ if (le16_to_cpu(usx2y(card)->dev->descriptor.idProduct) != USB_ID_US122)
+ err = usx2y_rate_set(usx2y(card), 44100); // Lets us428 recognize output-volume settings, disturbs us122.
+ return err;
+}
diff --git a/sound/usb/usx2y/usx2y.h b/sound/usb/usx2y/usx2y.h
new file mode 100644
index 0000000000..780071ddd9
--- /dev/null
+++ b/sound/usb/usx2y/usx2y.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Driver for Tascam US-X2Y USB soundcards
+ *
+ * Copyright (c) 2003 by Karsten Wiese <annabellesgarden@yahoo.de>
+ */
+
+#ifndef __SOUND_USX2Y_COMMON_H
+#define __SOUND_USX2Y_COMMON_H
+
+
+#define USX2Y_DRIVER_VERSION 0x0100 /* 0.1.0 */
+
+
+/* hwdep id string */
+#define SND_USX2Y_LOADER_ID "USX2Y Loader"
+#define SND_USX2Y_USBPCM_ID "USX2Y USBPCM"
+
+/* hardware type */
+enum {
+ USX2Y_TYPE_122,
+ USX2Y_TYPE_224,
+ USX2Y_TYPE_428,
+ USX2Y_TYPE_NUMS
+};
+
+#define USB_ID_US122 0x8007
+#define USB_ID_US224 0x8005
+#define USB_ID_US428 0x8001
+
+/* chip status */
+enum {
+ USX2Y_STAT_CHIP_INIT = (1 << 0), /* all operational */
+ USX2Y_STAT_CHIP_MMAP_PCM_URBS = (1 << 1), /* pcm transport over mmaped urbs */
+ USX2Y_STAT_CHIP_HUP = (1 << 31), /* all operational */
+};
+
+#endif /* __SOUND_USX2Y_COMMON_H */
diff --git a/sound/usb/usx2y/usx2yhwdeppcm.c b/sound/usb/usx2y/usx2yhwdeppcm.c
new file mode 100644
index 0000000000..36f2e31168
--- /dev/null
+++ b/sound/usb/usx2y/usx2yhwdeppcm.c
@@ -0,0 +1,775 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ */
+
+/* USX2Y "rawusb" aka hwdep_pcm implementation
+
+ Its usb's unableness to atomically handle power of 2 period sized data chuncs
+ at standard samplerates,
+ what led to this part of the usx2y module:
+ It provides the alsa kernel half of the usx2y-alsa-jack driver pair.
+ The pair uses a hardware dependent alsa-device for mmaped pcm transport.
+ Advantage achieved:
+ The usb_hc moves pcm data from/into memory via DMA.
+ That memory is mmaped by jack's usx2y driver.
+ Jack's usx2y driver is the first/last to read/write pcm data.
+ Read/write is a combination of power of 2 period shaping and
+ float/int conversation.
+ Compared to mainline alsa/jack we leave out power of 2 period shaping inside
+ snd-usb-usx2y which needs memcpy() and additional buffers.
+ As a side effect possible unwanted pcm-data coruption resulting of
+ standard alsa's snd-usb-usx2y period shaping scheme falls away.
+ Result is sane jack operation at buffering schemes down to 128frames,
+ 2 periods.
+ plain usx2y alsa mode is able to achieve 64frames, 4periods, but only at the
+ cost of easier triggered i.e. aeolus xruns (128 or 256frames,
+ 2periods works but is useless cause of crackling).
+
+ This is a first "proof of concept" implementation.
+ Later, functionalities should migrate to more appropriate places:
+ Userland:
+ - The jackd could mmap its float-pcm buffers directly from alsa-lib.
+ - alsa-lib could provide power of 2 period sized shaping combined with int/float
+ conversation.
+ Currently the usx2y jack driver provides above 2 services.
+ Kernel:
+ - rawusb dma pcm buffer transport should go to snd-usb-lib, so also snd-usb-audio
+ devices can use it.
+ Currently rawusb dma pcm buffer transport (this file) is only available to snd-usb-usx2y.
+*/
+
+#include <linux/delay.h>
+#include <linux/gfp.h>
+#include "usbusx2yaudio.c"
+
+#if defined(USX2Y_NRPACKS_VARIABLE) || USX2Y_NRPACKS == 1
+
+#include <sound/hwdep.h>
+
+static int usx2y_usbpcm_urb_capt_retire(struct snd_usx2y_substream *subs)
+{
+ struct urb *urb = subs->completed_urb;
+ struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
+ int i, lens = 0, hwptr_done = subs->hwptr_done;
+ struct usx2ydev *usx2y = subs->usx2y;
+ int head;
+
+ if (usx2y->hwdep_pcm_shm->capture_iso_start < 0) { //FIXME
+ head = usx2y->hwdep_pcm_shm->captured_iso_head + 1;
+ if (head >= ARRAY_SIZE(usx2y->hwdep_pcm_shm->captured_iso))
+ head = 0;
+ usx2y->hwdep_pcm_shm->capture_iso_start = head;
+ snd_printdd("cap start %i\n", head);
+ }
+ for (i = 0; i < nr_of_packs(); i++) {
+ if (urb->iso_frame_desc[i].status) { /* active? hmm, skip this */
+ snd_printk(KERN_ERR
+ "active frame status %i. Most probably some hardware problem.\n",
+ urb->iso_frame_desc[i].status);
+ return urb->iso_frame_desc[i].status;
+ }
+ lens += urb->iso_frame_desc[i].actual_length / usx2y->stride;
+ }
+ hwptr_done += lens;
+ if (hwptr_done >= runtime->buffer_size)
+ hwptr_done -= runtime->buffer_size;
+ subs->hwptr_done = hwptr_done;
+ subs->transfer_done += lens;
+ /* update the pointer, call callback if necessary */
+ if (subs->transfer_done >= runtime->period_size) {
+ subs->transfer_done -= runtime->period_size;
+ snd_pcm_period_elapsed(subs->pcm_substream);
+ }
+ return 0;
+}
+
+static int usx2y_iso_frames_per_buffer(struct snd_pcm_runtime *runtime,
+ struct usx2ydev *usx2y)
+{
+ return (runtime->buffer_size * 1000) / usx2y->rate + 1; //FIXME: so far only correct period_size == 2^x ?
+}
+
+/*
+ * prepare urb for playback data pipe
+ *
+ * we copy the data directly from the pcm buffer.
+ * the current position to be copied is held in hwptr field.
+ * since a urb can handle only a single linear buffer, if the total
+ * transferred area overflows the buffer boundary, we cannot send
+ * it directly from the buffer. thus the data is once copied to
+ * a temporary buffer and urb points to that.
+ */
+static int usx2y_hwdep_urb_play_prepare(struct snd_usx2y_substream *subs,
+ struct urb *urb)
+{
+ int count, counts, pack;
+ struct usx2ydev *usx2y = subs->usx2y;
+ struct snd_usx2y_hwdep_pcm_shm *shm = usx2y->hwdep_pcm_shm;
+ struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
+
+ if (shm->playback_iso_start < 0) {
+ shm->playback_iso_start = shm->captured_iso_head -
+ usx2y_iso_frames_per_buffer(runtime, usx2y);
+ if (shm->playback_iso_start < 0)
+ shm->playback_iso_start += ARRAY_SIZE(shm->captured_iso);
+ shm->playback_iso_head = shm->playback_iso_start;
+ }
+
+ count = 0;
+ for (pack = 0; pack < nr_of_packs(); pack++) {
+ /* calculate the size of a packet */
+ counts = shm->captured_iso[shm->playback_iso_head].length / usx2y->stride;
+ if (counts < 43 || counts > 50) {
+ snd_printk(KERN_ERR "should not be here with counts=%i\n", counts);
+ return -EPIPE;
+ }
+ /* set up descriptor */
+ urb->iso_frame_desc[pack].offset = shm->captured_iso[shm->playback_iso_head].offset;
+ urb->iso_frame_desc[pack].length = shm->captured_iso[shm->playback_iso_head].length;
+ if (atomic_read(&subs->state) != STATE_RUNNING)
+ memset((char *)urb->transfer_buffer + urb->iso_frame_desc[pack].offset, 0,
+ urb->iso_frame_desc[pack].length);
+ if (++shm->playback_iso_head >= ARRAY_SIZE(shm->captured_iso))
+ shm->playback_iso_head = 0;
+ count += counts;
+ }
+ urb->transfer_buffer_length = count * usx2y->stride;
+ return 0;
+}
+
+static void usx2y_usbpcm_urb_capt_iso_advance(struct snd_usx2y_substream *subs,
+ struct urb *urb)
+{
+ struct usb_iso_packet_descriptor *desc;
+ struct snd_usx2y_hwdep_pcm_shm *shm;
+ int pack, head;
+
+ for (pack = 0; pack < nr_of_packs(); ++pack) {
+ desc = urb->iso_frame_desc + pack;
+ if (subs) {
+ shm = subs->usx2y->hwdep_pcm_shm;
+ head = shm->captured_iso_head + 1;
+ if (head >= ARRAY_SIZE(shm->captured_iso))
+ head = 0;
+ shm->captured_iso[head].frame = urb->start_frame + pack;
+ shm->captured_iso[head].offset = desc->offset;
+ shm->captured_iso[head].length = desc->actual_length;
+ shm->captured_iso_head = head;
+ shm->captured_iso_frames++;
+ }
+ desc->offset += desc->length * NRURBS * nr_of_packs();
+ if (desc->offset + desc->length >= SSS)
+ desc->offset -= (SSS - desc->length);
+ }
+}
+
+static int usx2y_usbpcm_usbframe_complete(struct snd_usx2y_substream *capsubs,
+ struct snd_usx2y_substream *capsubs2,
+ struct snd_usx2y_substream *playbacksubs,
+ int frame)
+{
+ int err, state;
+ struct urb *urb = playbacksubs->completed_urb;
+
+ state = atomic_read(&playbacksubs->state);
+ if (urb) {
+ if (state == STATE_RUNNING)
+ usx2y_urb_play_retire(playbacksubs, urb);
+ else if (state >= STATE_PRERUNNING)
+ atomic_inc(&playbacksubs->state);
+ } else {
+ switch (state) {
+ case STATE_STARTING1:
+ urb = playbacksubs->urb[0];
+ atomic_inc(&playbacksubs->state);
+ break;
+ case STATE_STARTING2:
+ urb = playbacksubs->urb[1];
+ atomic_inc(&playbacksubs->state);
+ break;
+ }
+ }
+ if (urb) {
+ err = usx2y_hwdep_urb_play_prepare(playbacksubs, urb);
+ if (err)
+ return err;
+ err = usx2y_hwdep_urb_play_prepare(playbacksubs, urb);
+ if (err)
+ return err;
+ }
+
+ playbacksubs->completed_urb = NULL;
+
+ state = atomic_read(&capsubs->state);
+ if (state >= STATE_PREPARED) {
+ if (state == STATE_RUNNING) {
+ err = usx2y_usbpcm_urb_capt_retire(capsubs);
+ if (err)
+ return err;
+ } else if (state >= STATE_PRERUNNING) {
+ atomic_inc(&capsubs->state);
+ }
+ usx2y_usbpcm_urb_capt_iso_advance(capsubs, capsubs->completed_urb);
+ if (capsubs2)
+ usx2y_usbpcm_urb_capt_iso_advance(NULL, capsubs2->completed_urb);
+ err = usx2y_urb_submit(capsubs, capsubs->completed_urb, frame);
+ if (err)
+ return err;
+ if (capsubs2) {
+ err = usx2y_urb_submit(capsubs2, capsubs2->completed_urb, frame);
+ if (err)
+ return err;
+ }
+ }
+ capsubs->completed_urb = NULL;
+ if (capsubs2)
+ capsubs2->completed_urb = NULL;
+ return 0;
+}
+
+static void i_usx2y_usbpcm_urb_complete(struct urb *urb)
+{
+ struct snd_usx2y_substream *subs = urb->context;
+ struct usx2ydev *usx2y = subs->usx2y;
+ struct snd_usx2y_substream *capsubs, *capsubs2, *playbacksubs;
+
+ if (unlikely(atomic_read(&subs->state) < STATE_PREPARED)) {
+ snd_printdd("hcd_frame=%i ep=%i%s status=%i start_frame=%i\n",
+ usb_get_current_frame_number(usx2y->dev),
+ subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out",
+ urb->status, urb->start_frame);
+ return;
+ }
+ if (unlikely(urb->status)) {
+ usx2y_error_urb_status(usx2y, subs, urb);
+ return;
+ }
+
+ subs->completed_urb = urb;
+ capsubs = usx2y->subs[SNDRV_PCM_STREAM_CAPTURE];
+ capsubs2 = usx2y->subs[SNDRV_PCM_STREAM_CAPTURE + 2];
+ playbacksubs = usx2y->subs[SNDRV_PCM_STREAM_PLAYBACK];
+ if (capsubs->completed_urb && atomic_read(&capsubs->state) >= STATE_PREPARED &&
+ (!capsubs2 || capsubs2->completed_urb) &&
+ (playbacksubs->completed_urb || atomic_read(&playbacksubs->state) < STATE_PREPARED)) {
+ if (!usx2y_usbpcm_usbframe_complete(capsubs, capsubs2, playbacksubs, urb->start_frame)) {
+ usx2y->wait_iso_frame += nr_of_packs();
+ } else {
+ snd_printdd("\n");
+ usx2y_clients_stop(usx2y);
+ }
+ }
+}
+
+static void usx2y_hwdep_urb_release(struct urb **urb)
+{
+ usb_kill_urb(*urb);
+ usb_free_urb(*urb);
+ *urb = NULL;
+}
+
+/*
+ * release a substream
+ */
+static void usx2y_usbpcm_urbs_release(struct snd_usx2y_substream *subs)
+{
+ int i;
+
+ snd_printdd("snd_usx2y_urbs_release() %i\n", subs->endpoint);
+ for (i = 0; i < NRURBS; i++)
+ usx2y_hwdep_urb_release(subs->urb + i);
+}
+
+static void usx2y_usbpcm_subs_startup_finish(struct usx2ydev *usx2y)
+{
+ usx2y_urbs_set_complete(usx2y, i_usx2y_usbpcm_urb_complete);
+ usx2y->prepare_subs = NULL;
+}
+
+static void i_usx2y_usbpcm_subs_startup(struct urb *urb)
+{
+ struct snd_usx2y_substream *subs = urb->context;
+ struct usx2ydev *usx2y = subs->usx2y;
+ struct snd_usx2y_substream *prepare_subs = usx2y->prepare_subs;
+ struct snd_usx2y_substream *cap_subs2;
+
+ if (prepare_subs &&
+ urb->start_frame == prepare_subs->urb[0]->start_frame) {
+ atomic_inc(&prepare_subs->state);
+ if (prepare_subs == usx2y->subs[SNDRV_PCM_STREAM_CAPTURE]) {
+ cap_subs2 = usx2y->subs[SNDRV_PCM_STREAM_CAPTURE + 2];
+ if (cap_subs2)
+ atomic_inc(&cap_subs2->state);
+ }
+ usx2y_usbpcm_subs_startup_finish(usx2y);
+ wake_up(&usx2y->prepare_wait_queue);
+ }
+
+ i_usx2y_usbpcm_urb_complete(urb);
+}
+
+/*
+ * initialize a substream's urbs
+ */
+static int usx2y_usbpcm_urbs_allocate(struct snd_usx2y_substream *subs)
+{
+ int i;
+ unsigned int pipe;
+ int is_playback = subs == subs->usx2y->subs[SNDRV_PCM_STREAM_PLAYBACK];
+ struct usb_device *dev = subs->usx2y->dev;
+ struct urb **purb;
+
+ pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) :
+ usb_rcvisocpipe(dev, subs->endpoint);
+ subs->maxpacksize = usb_maxpacket(dev, pipe);
+ if (!subs->maxpacksize)
+ return -EINVAL;
+
+ /* allocate and initialize data urbs */
+ for (i = 0; i < NRURBS; i++) {
+ purb = subs->urb + i;
+ if (*purb) {
+ usb_kill_urb(*purb);
+ continue;
+ }
+ *purb = usb_alloc_urb(nr_of_packs(), GFP_KERNEL);
+ if (!*purb) {
+ usx2y_usbpcm_urbs_release(subs);
+ return -ENOMEM;
+ }
+ (*purb)->transfer_buffer = is_playback ?
+ subs->usx2y->hwdep_pcm_shm->playback : (
+ subs->endpoint == 0x8 ?
+ subs->usx2y->hwdep_pcm_shm->capture0x8 :
+ subs->usx2y->hwdep_pcm_shm->capture0xA);
+
+ (*purb)->dev = dev;
+ (*purb)->pipe = pipe;
+ (*purb)->number_of_packets = nr_of_packs();
+ (*purb)->context = subs;
+ (*purb)->interval = 1;
+ (*purb)->complete = i_usx2y_usbpcm_subs_startup;
+ }
+ return 0;
+}
+
+/*
+ * free the buffer
+ */
+static int snd_usx2y_usbpcm_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_usx2y_substream *subs = runtime->private_data;
+ struct snd_usx2y_substream *cap_subs;
+ struct snd_usx2y_substream *playback_subs;
+ struct snd_usx2y_substream *cap_subs2;
+
+ mutex_lock(&subs->usx2y->pcm_mutex);
+ snd_printdd("%s(%p)\n", __func__, substream);
+
+ cap_subs2 = subs->usx2y->subs[SNDRV_PCM_STREAM_CAPTURE + 2];
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ cap_subs = subs->usx2y->subs[SNDRV_PCM_STREAM_CAPTURE];
+ atomic_set(&subs->state, STATE_STOPPED);
+ usx2y_usbpcm_urbs_release(subs);
+ if (!cap_subs->pcm_substream ||
+ !cap_subs->pcm_substream->runtime ||
+ cap_subs->pcm_substream->runtime->state < SNDRV_PCM_STATE_PREPARED) {
+ atomic_set(&cap_subs->state, STATE_STOPPED);
+ if (cap_subs2)
+ atomic_set(&cap_subs2->state, STATE_STOPPED);
+ usx2y_usbpcm_urbs_release(cap_subs);
+ if (cap_subs2)
+ usx2y_usbpcm_urbs_release(cap_subs2);
+ }
+ } else {
+ playback_subs = subs->usx2y->subs[SNDRV_PCM_STREAM_PLAYBACK];
+ if (atomic_read(&playback_subs->state) < STATE_PREPARED) {
+ atomic_set(&subs->state, STATE_STOPPED);
+ if (cap_subs2)
+ atomic_set(&cap_subs2->state, STATE_STOPPED);
+ usx2y_usbpcm_urbs_release(subs);
+ if (cap_subs2)
+ usx2y_usbpcm_urbs_release(cap_subs2);
+ }
+ }
+ mutex_unlock(&subs->usx2y->pcm_mutex);
+ return 0;
+}
+
+static void usx2y_usbpcm_subs_startup(struct snd_usx2y_substream *subs)
+{
+ struct usx2ydev *usx2y = subs->usx2y;
+
+ usx2y->prepare_subs = subs;
+ subs->urb[0]->start_frame = -1;
+ smp_wmb(); // Make sure above modifications are seen by i_usx2y_subs_startup()
+ usx2y_urbs_set_complete(usx2y, i_usx2y_usbpcm_subs_startup);
+}
+
+static int usx2y_usbpcm_urbs_start(struct snd_usx2y_substream *subs)
+{
+ int p, u, err, stream = subs->pcm_substream->stream;
+ struct usx2ydev *usx2y = subs->usx2y;
+ struct urb *urb;
+ unsigned long pack;
+
+ if (stream == SNDRV_PCM_STREAM_CAPTURE) {
+ usx2y->hwdep_pcm_shm->captured_iso_head = -1;
+ usx2y->hwdep_pcm_shm->captured_iso_frames = 0;
+ }
+
+ for (p = 0; 3 >= (stream + p); p += 2) {
+ struct snd_usx2y_substream *subs = usx2y->subs[stream + p];
+ if (subs) {
+ err = usx2y_usbpcm_urbs_allocate(subs);
+ if (err < 0)
+ return err;
+ subs->completed_urb = NULL;
+ }
+ }
+
+ for (p = 0; p < 4; p++) {
+ struct snd_usx2y_substream *subs = usx2y->subs[p];
+
+ if (subs && atomic_read(&subs->state) >= STATE_PREPARED)
+ goto start;
+ }
+
+ start:
+ usx2y_usbpcm_subs_startup(subs);
+ for (u = 0; u < NRURBS; u++) {
+ for (p = 0; 3 >= (stream + p); p += 2) {
+ struct snd_usx2y_substream *subs = usx2y->subs[stream + p];
+
+ if (!subs)
+ continue;
+ urb = subs->urb[u];
+ if (usb_pipein(urb->pipe)) {
+ if (!u)
+ atomic_set(&subs->state, STATE_STARTING3);
+ urb->dev = usx2y->dev;
+ for (pack = 0; pack < nr_of_packs(); pack++) {
+ urb->iso_frame_desc[pack].offset = subs->maxpacksize * (pack + u * nr_of_packs());
+ urb->iso_frame_desc[pack].length = subs->maxpacksize;
+ }
+ urb->transfer_buffer_length = subs->maxpacksize * nr_of_packs();
+ err = usb_submit_urb(urb, GFP_KERNEL);
+ if (err < 0) {
+ snd_printk(KERN_ERR "cannot usb_submit_urb() for urb %d, err = %d\n", u, err);
+ err = -EPIPE;
+ goto cleanup;
+ } else {
+ snd_printdd("%i\n", urb->start_frame);
+ if (!u)
+ usx2y->wait_iso_frame = urb->start_frame;
+ }
+ urb->transfer_flags = 0;
+ } else {
+ atomic_set(&subs->state, STATE_STARTING1);
+ break;
+ }
+ }
+ }
+ err = 0;
+ wait_event(usx2y->prepare_wait_queue, !usx2y->prepare_subs);
+ if (atomic_read(&subs->state) != STATE_PREPARED)
+ err = -EPIPE;
+
+ cleanup:
+ if (err) {
+ usx2y_subs_startup_finish(usx2y); // Call it now
+ usx2y_clients_stop(usx2y); // something is completely wrong > stop everything
+ }
+ return err;
+}
+
+#define USX2Y_HWDEP_PCM_PAGES \
+ PAGE_ALIGN(sizeof(struct snd_usx2y_hwdep_pcm_shm))
+
+/*
+ * prepare callback
+ *
+ * set format and initialize urbs
+ */
+static int snd_usx2y_usbpcm_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_usx2y_substream *subs = runtime->private_data;
+ struct usx2ydev *usx2y = subs->usx2y;
+ struct snd_usx2y_substream *capsubs = subs->usx2y->subs[SNDRV_PCM_STREAM_CAPTURE];
+ int err = 0;
+
+ snd_printdd("snd_usx2y_pcm_prepare(%p)\n", substream);
+
+ mutex_lock(&usx2y->pcm_mutex);
+
+ if (!usx2y->hwdep_pcm_shm) {
+ usx2y->hwdep_pcm_shm = alloc_pages_exact(USX2Y_HWDEP_PCM_PAGES,
+ GFP_KERNEL);
+ if (!usx2y->hwdep_pcm_shm) {
+ err = -ENOMEM;
+ goto up_prepare_mutex;
+ }
+ memset(usx2y->hwdep_pcm_shm, 0, USX2Y_HWDEP_PCM_PAGES);
+ }
+
+ usx2y_subs_prepare(subs);
+ // Start hardware streams
+ // SyncStream first....
+ if (atomic_read(&capsubs->state) < STATE_PREPARED) {
+ if (usx2y->format != runtime->format) {
+ err = usx2y_format_set(usx2y, runtime->format);
+ if (err < 0)
+ goto up_prepare_mutex;
+ }
+ if (usx2y->rate != runtime->rate) {
+ err = usx2y_rate_set(usx2y, runtime->rate);
+ if (err < 0)
+ goto up_prepare_mutex;
+ }
+ snd_printdd("starting capture pipe for %s\n", subs == capsubs ?
+ "self" : "playpipe");
+ err = usx2y_usbpcm_urbs_start(capsubs);
+ if (err < 0)
+ goto up_prepare_mutex;
+ }
+
+ if (subs != capsubs) {
+ usx2y->hwdep_pcm_shm->playback_iso_start = -1;
+ if (atomic_read(&subs->state) < STATE_PREPARED) {
+ while (usx2y_iso_frames_per_buffer(runtime, usx2y) >
+ usx2y->hwdep_pcm_shm->captured_iso_frames) {
+ snd_printdd("Wait: iso_frames_per_buffer=%i,captured_iso_frames=%i\n",
+ usx2y_iso_frames_per_buffer(runtime, usx2y),
+ usx2y->hwdep_pcm_shm->captured_iso_frames);
+ if (msleep_interruptible(10)) {
+ err = -ERESTARTSYS;
+ goto up_prepare_mutex;
+ }
+ }
+ err = usx2y_usbpcm_urbs_start(subs);
+ if (err < 0)
+ goto up_prepare_mutex;
+ }
+ snd_printdd("Ready: iso_frames_per_buffer=%i,captured_iso_frames=%i\n",
+ usx2y_iso_frames_per_buffer(runtime, usx2y),
+ usx2y->hwdep_pcm_shm->captured_iso_frames);
+ } else {
+ usx2y->hwdep_pcm_shm->capture_iso_start = -1;
+ }
+
+ up_prepare_mutex:
+ mutex_unlock(&usx2y->pcm_mutex);
+ return err;
+}
+
+static const struct snd_pcm_hardware snd_usx2y_4c = {
+ .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE,
+ .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
+ .rate_min = 44100,
+ .rate_max = 48000,
+ .channels_min = 2,
+ .channels_max = 4,
+ .buffer_bytes_max = (2*128*1024),
+ .period_bytes_min = 64,
+ .period_bytes_max = (128*1024),
+ .periods_min = 2,
+ .periods_max = 1024,
+ .fifo_size = 0
+};
+
+static int snd_usx2y_usbpcm_open(struct snd_pcm_substream *substream)
+{
+ struct snd_usx2y_substream *subs =
+ ((struct snd_usx2y_substream **)
+ snd_pcm_substream_chip(substream))[substream->stream];
+ struct snd_pcm_runtime *runtime = substream->runtime;
+
+ if (!(subs->usx2y->chip_status & USX2Y_STAT_CHIP_MMAP_PCM_URBS))
+ return -EBUSY;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ runtime->hw = snd_usx2y_2c;
+ else
+ runtime->hw = (subs->usx2y->subs[3] ? snd_usx2y_4c : snd_usx2y_2c);
+ runtime->private_data = subs;
+ subs->pcm_substream = substream;
+ snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 1000, 200000);
+ return 0;
+}
+
+static int snd_usx2y_usbpcm_close(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_usx2y_substream *subs = runtime->private_data;
+
+ subs->pcm_substream = NULL;
+ return 0;
+}
+
+static const struct snd_pcm_ops snd_usx2y_usbpcm_ops = {
+ .open = snd_usx2y_usbpcm_open,
+ .close = snd_usx2y_usbpcm_close,
+ .hw_params = snd_usx2y_pcm_hw_params,
+ .hw_free = snd_usx2y_usbpcm_hw_free,
+ .prepare = snd_usx2y_usbpcm_prepare,
+ .trigger = snd_usx2y_pcm_trigger,
+ .pointer = snd_usx2y_pcm_pointer,
+};
+
+static int usx2y_pcms_busy_check(struct snd_card *card)
+{
+ struct usx2ydev *dev = usx2y(card);
+ struct snd_usx2y_substream *subs;
+ int i;
+
+ for (i = 0; i < dev->pcm_devs * 2; i++) {
+ subs = dev->subs[i];
+ if (subs && subs->pcm_substream &&
+ SUBSTREAM_BUSY(subs->pcm_substream))
+ return -EBUSY;
+ }
+ return 0;
+}
+
+static int snd_usx2y_hwdep_pcm_open(struct snd_hwdep *hw, struct file *file)
+{
+ struct snd_card *card = hw->card;
+ int err;
+
+ mutex_lock(&usx2y(card)->pcm_mutex);
+ err = usx2y_pcms_busy_check(card);
+ if (!err)
+ usx2y(card)->chip_status |= USX2Y_STAT_CHIP_MMAP_PCM_URBS;
+ mutex_unlock(&usx2y(card)->pcm_mutex);
+ return err;
+}
+
+static int snd_usx2y_hwdep_pcm_release(struct snd_hwdep *hw, struct file *file)
+{
+ struct snd_card *card = hw->card;
+ int err;
+
+ mutex_lock(&usx2y(card)->pcm_mutex);
+ err = usx2y_pcms_busy_check(card);
+ if (!err)
+ usx2y(hw->card)->chip_status &= ~USX2Y_STAT_CHIP_MMAP_PCM_URBS;
+ mutex_unlock(&usx2y(card)->pcm_mutex);
+ return err;
+}
+
+static void snd_usx2y_hwdep_pcm_vm_open(struct vm_area_struct *area)
+{
+}
+
+static void snd_usx2y_hwdep_pcm_vm_close(struct vm_area_struct *area)
+{
+}
+
+static vm_fault_t snd_usx2y_hwdep_pcm_vm_fault(struct vm_fault *vmf)
+{
+ unsigned long offset;
+ void *vaddr;
+
+ offset = vmf->pgoff << PAGE_SHIFT;
+ vaddr = (char *)((struct usx2ydev *)vmf->vma->vm_private_data)->hwdep_pcm_shm + offset;
+ vmf->page = virt_to_page(vaddr);
+ get_page(vmf->page);
+ return 0;
+}
+
+static const struct vm_operations_struct snd_usx2y_hwdep_pcm_vm_ops = {
+ .open = snd_usx2y_hwdep_pcm_vm_open,
+ .close = snd_usx2y_hwdep_pcm_vm_close,
+ .fault = snd_usx2y_hwdep_pcm_vm_fault,
+};
+
+static int snd_usx2y_hwdep_pcm_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 *usx2y = hw->private_data;
+
+ if (!(usx2y->chip_status & USX2Y_STAT_CHIP_INIT))
+ return -EBUSY;
+
+ /* if userspace tries to mmap beyond end of our buffer, fail */
+ if (size > USX2Y_HWDEP_PCM_PAGES) {
+ snd_printd("%lu > %lu\n", size, (unsigned long)USX2Y_HWDEP_PCM_PAGES);
+ return -EINVAL;
+ }
+
+ if (!usx2y->hwdep_pcm_shm)
+ return -ENODEV;
+
+ area->vm_ops = &snd_usx2y_hwdep_pcm_vm_ops;
+ vm_flags_set(area, VM_DONTEXPAND | VM_DONTDUMP);
+ area->vm_private_data = hw->private_data;
+ return 0;
+}
+
+static void snd_usx2y_hwdep_pcm_private_free(struct snd_hwdep *hwdep)
+{
+ struct usx2ydev *usx2y = hwdep->private_data;
+
+ if (usx2y->hwdep_pcm_shm)
+ free_pages_exact(usx2y->hwdep_pcm_shm, USX2Y_HWDEP_PCM_PAGES);
+}
+
+int usx2y_hwdep_pcm_new(struct snd_card *card)
+{
+ int err;
+ struct snd_hwdep *hw;
+ struct snd_pcm *pcm;
+ struct usb_device *dev = usx2y(card)->dev;
+
+ if (nr_of_packs() != 1)
+ return 0;
+
+ err = snd_hwdep_new(card, SND_USX2Y_USBPCM_ID, 1, &hw);
+ if (err < 0)
+ return err;
+
+ hw->iface = SNDRV_HWDEP_IFACE_USX2Y_PCM;
+ hw->private_data = usx2y(card);
+ hw->private_free = snd_usx2y_hwdep_pcm_private_free;
+ hw->ops.open = snd_usx2y_hwdep_pcm_open;
+ hw->ops.release = snd_usx2y_hwdep_pcm_release;
+ hw->ops.mmap = snd_usx2y_hwdep_pcm_mmap;
+ hw->exclusive = 1;
+ sprintf(hw->name, "/dev/bus/usb/%03d/%03d/hwdeppcm", dev->bus->busnum, dev->devnum);
+
+ err = snd_pcm_new(card, NAME_ALLCAPS" hwdep Audio", 2, 1, 1, &pcm);
+ if (err < 0)
+ return err;
+
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_usx2y_usbpcm_ops);
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_usx2y_usbpcm_ops);
+
+ pcm->private_data = usx2y(card)->subs;
+ pcm->info_flags = 0;
+
+ sprintf(pcm->name, NAME_ALLCAPS" hwdep Audio");
+ snd_pcm_set_managed_buffer(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream,
+ SNDRV_DMA_TYPE_CONTINUOUS,
+ NULL,
+ 64*1024, 128*1024);
+ snd_pcm_set_managed_buffer(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
+ SNDRV_DMA_TYPE_CONTINUOUS,
+ NULL,
+ 64*1024, 128*1024);
+
+ return 0;
+}
+
+#else
+
+int usx2y_hwdep_pcm_new(struct snd_card *card)
+{
+ return 0;
+}
+
+#endif
diff --git a/sound/usb/usx2y/usx2yhwdeppcm.h b/sound/usb/usx2y/usx2yhwdeppcm.h
new file mode 100644
index 0000000000..731b1c5a34
--- /dev/null
+++ b/sound/usb/usx2y/usx2yhwdeppcm.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#define MAXPACK 50
+#define MAXBUFFERMS 100
+#define MAXSTRIDE 3
+
+#define SSS (((MAXPACK*MAXBUFFERMS*MAXSTRIDE + 4096) / 4096) * 4096)
+struct snd_usx2y_hwdep_pcm_shm {
+ char playback[SSS];
+ char capture0x8[SSS];
+ char capture0xA[SSS];
+ volatile int playback_iso_head;
+ int playback_iso_start;
+ struct {
+ int frame,
+ offset,
+ length;
+ } captured_iso[128];
+ volatile int captured_iso_head;
+ volatile unsigned captured_iso_frames;
+ int capture_iso_start;
+};
+
+int usx2y_hwdep_pcm_new(struct snd_card *card);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 08:00:16 +0000