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ALSA: usx2y: Fix spaces

Browse Source 
This patch corrects merely the spaces in the usx2y code, including the
superfluous trailing space in the debug prints and a slight reformat
of some comment lines.  Nothing really touches about the code itself.

Link: https://lore.kernel.org/r/20210517131545.27252-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2021-05-17 15:15:36 +02:00
parent bae3ce4942
commit 4c0a58ef36
9 changed files with 256 additions and 211 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
sound/usb/usx2y/us122l.c
View File

@ -49,7 +49,7 @@ static int us122l_create_usbmidi(struct snd_card *card)
static const struct snd_usb_audio_quirk quirk = {
.vendor_name = "US122L",
.product_name = NAME_ALLCAPS,
.ifnum = 1,
.ifnum = 1,
.type = QUIRK_MIDI_US122L,
.data = &quirk_data
};
@ -71,7 +71,7 @@ static int us144_create_usbmidi(struct snd_card *card)
static const struct snd_usb_audio_quirk quirk = {
.vendor_name = "US144",
.product_name = NAME_ALLCAPS,
.ifnum = 0,
.ifnum = 0,
.type = QUIRK_MIDI_US122L,
.data = &quirk_data
};
@ -95,6 +95,7 @@ static void pt_info_set(struct usb_device *dev, u8 v)
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));
}
@ -138,6 +139,7 @@ unlock:
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));
}
@ -148,11 +150,11 @@ static const struct vm_operations_struct usb_stream_hwdep_vm_ops = {
.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;
@ -173,6 +175,7 @@ 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) {
@ -243,6 +246,7 @@ static __poll_t usb_stream_hwdep_poll(struct snd_hwdep *hw,
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;
@ -262,6 +266,7 @@ static __poll_t usb_stream_hwdep_poll(struct snd_hwdep *hw,
static void us122l_stop(struct us122l *us122l)
{
struct list_head *p;
list_for_each(p, &us122l->midi_list)
snd_usbmidi_input_stop(p);
@ -320,13 +325,13 @@ static bool us122l_start(struct us122l *us122l,
err = us122l_set_sample_rate(us122l->dev, rate);
if (err < 0) {
us122l_stop(us122l);
snd_printk(KERN_ERR "us122l_set_sample_rate error \n");
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 "us122l_start error %i \n", err);
snd_printk(KERN_ERR "us122l_start error %i\n", err);
goto out;
}
list_for_each(p, &us122l->midi_list)
@ -431,7 +436,6 @@ static int usb_stream_hwdep_new(struct snd_card *card)
return 0;
}
static bool us122l_create_card(struct snd_card *card)
{
int err;
@ -440,13 +444,13 @@ static bool us122l_create_card(struct snd_card *card)
if (us122l->is_us144) {
err = usb_set_interface(us122l->dev, 0, 1);
if (err) {
snd_printk(KERN_ERR "usb_set_interface error \n");
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");
snd_printk(KERN_ERR "usb_set_interface error\n");
return false;
}
@ -461,13 +465,14 @@ static bool us122l_create_card(struct snd_card *card)
else
err = us122l_create_usbmidi(card);
if (err < 0) {
snd_printk(KERN_ERR "us122l_create_usbmidi error %i \n", err);
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 */
/* release the midi resources */
struct list_head *p;
list_for_each(p, &us122l->midi_list)
snd_usbmidi_disconnect(p);
@ -484,6 +489,7 @@ 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;
}
@ -565,7 +571,7 @@ static int snd_us122l_probe(struct usb_interface *intf,
if (id->driver_info & US122L_FLAG_US144 &&
device->speed == USB_SPEED_HIGH) {
snd_printk(KERN_ERR "disable ehci-hcd to run US-144 \n");
snd_printk(KERN_ERR "disable ehci-hcd to run US-144\n");
return -ENODEV;
}
@ -601,7 +607,7 @@ static void snd_us122l_disconnect(struct usb_interface *intf)
us122l_stop(us122l);
mutex_unlock(&us122l->mutex);
/* release the midi resources */
/* release the midi resources */
list_for_each(p, &us122l->midi_list) {
snd_usbmidi_disconnect(p);
}
@ -661,13 +667,13 @@ static int snd_us122l_resume(struct usb_interface *intf)
if (us122l->is_us144) {
err = usb_set_interface(us122l->dev, 0, 1);
if (err) {
snd_printk(KERN_ERR "usb_set_interface error \n");
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");
snd_printk(KERN_ERR "usb_set_interface error\n");
goto unlock;
}
@ -677,7 +683,7 @@ static int snd_us122l_resume(struct usb_interface *intf)
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");
snd_printk(KERN_ERR "us122l_set_sample_rate error\n");
goto unlock;
}
err = usb_stream_start(&us122l->sk);
@ -717,8 +723,8 @@ static const struct usb_device_id snd_us122l_usb_id_table[] = {
},
{ /* 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,

52
sound/usb/usx2y/usX2Yhwdep.c
View File

@ -21,13 +21,13 @@
static vm_fault_t snd_us428ctls_vm_fault(struct vm_fault *vmf)
{
unsigned long offset;
struct page * page;
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);
@ -44,20 +44,20 @@ 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)
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))
if (!(us428->chip_status & USX2Y_STAT_CHIP_INIT))
return -EBUSY;
/* if userspace tries to mmap beyond end of our buffer, fail */
if (size > PAGE_ALIGN(sizeof(struct us428ctls_sharedmem))) {
snd_printd( "%lu > %lu\n", size, (unsigned long)sizeof(struct us428ctls_sharedmem));
return -EINVAL;
/* if userspace tries to mmap beyond end of our buffer, fail */
if (size > PAGE_ALIGN(sizeof(struct us428ctls_sharedmem))) {
snd_printd("%lu > %lu\n", size, (unsigned long)sizeof(struct us428ctls_sharedmem));
return -EINVAL;
}
if (!us428->us428ctls_sharedmem) {
@ -79,6 +79,7 @@ static __poll_t snd_us428ctls_poll(struct snd_hwdep *hw, struct file *file, poll
__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;
@ -123,7 +124,6 @@ static int snd_usx2y_hwdep_dsp_status(struct snd_hwdep *hw,
return 0;
}
static int usx2y_create_usbmidi(struct snd_card *card)
{
static const struct snd_usb_midi_endpoint_info quirk_data_1 = {
@ -135,8 +135,8 @@ static int usx2y_create_usbmidi(struct snd_card *card)
static const struct snd_usb_audio_quirk quirk_1 = {
.vendor_name = "TASCAM",
.product_name = NAME_ALLCAPS,
.ifnum = 0,
.type = QUIRK_MIDI_FIXED_ENDPOINT,
.ifnum = 0,
.type = QUIRK_MIDI_FIXED_ENDPOINT,
.data = &quirk_data_1
};
static const struct snd_usb_midi_endpoint_info quirk_data_2 = {
@ -148,8 +148,8 @@ static int usx2y_create_usbmidi(struct snd_card *card)
static const struct snd_usb_audio_quirk quirk_2 = {
.vendor_name = "TASCAM",
.product_name = "US428",
.ifnum = 0,
.type = QUIRK_MIDI_FIXED_ENDPOINT,
.ifnum = 0,
.type = QUIRK_MIDI_FIXED_ENDPOINT,
.data = &quirk_data_2
};
struct usb_device *dev = usx2y(card)->dev;
@ -158,7 +158,7 @@ static int usx2y_create_usbmidi(struct snd_card *card)
le16_to_cpu(dev->descriptor.idProduct) == USB_ID_US428 ?
&quirk_2 : &quirk_1;
snd_printdd("usx2y_create_usbmidi \n");
snd_printdd("usx2y_create_usbmidi\n");
return snd_usbmidi_create(card, iface, &usx2y(card)->midi_list, quirk);
}
@ -168,10 +168,10 @@ static int usx2y_create_alsa_devices(struct snd_card *card)
do {
if ((err = usx2y_create_usbmidi(card)) < 0) {
snd_printk(KERN_ERR "usx2y_create_alsa_devices: usx2y_create_usbmidi error %i \n", err);
snd_printk(KERN_ERR "usx2y_create_alsa_devices: usx2y_create_usbmidi error %i\n", err);
break;
}
if ((err = usx2y_audio_create(card)) < 0)
if ((err = usx2y_audio_create(card)) < 0)
break;
if ((err = usx2y_hwdep_pcm_new(card)) < 0)
break;
@ -180,17 +180,17 @@ static int usx2y_create_alsa_devices(struct snd_card *card)
} while (0);
return err;
}
}
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;
struct usb_device *dev = priv->dev;
int lret, err;
char *buf;
snd_printdd( "dsp_load %s\n", dsp->name);
snd_printdd("dsp_load %s\n", dsp->name);
buf = memdup_user(dsp->image, dsp->length);
if (IS_ERR(buf))
@ -198,7 +198,7 @@ static int snd_usx2y_hwdep_dsp_load(struct snd_hwdep *hw,
err = usb_set_interface(dev, 0, 1);
if (err)
snd_printk(KERN_ERR "usb_set_interface error \n");
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);
@ -208,28 +208,27 @@ static int snd_usx2y_hwdep_dsp_load(struct snd_hwdep *hw,
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");
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");
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);
snd_printk(KERN_ERR "usx2y_create_alsa_devices error %i\n", err);
snd_card_free(hw->card);
return err;
}
priv->chip_status |= USX2Y_STAT_CHIP_INIT;
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 usx2y_hwdep_new(struct snd_card *card, struct usb_device *device)
{
int err;
struct snd_hwdep *hw;
@ -247,4 +246,3 @@ int usx2y_hwdep_new(struct snd_card *card, struct usb_device* device)
sprintf(hw->name, "/dev/bus/usb/%03d/%03d", device->bus->busnum, device->devnum);
return 0;
}

2
sound/usb/usx2y/usX2Yhwdep.h
View File

@ -2,6 +2,6 @@
#ifndef USX2YHWDEP_H
#define USX2YHWDEP_H
int usx2y_hwdep_new(struct snd_card *card, struct usb_device* device);
int usx2y_hwdep_new(struct snd_card *card, struct usb_device *device);
#endif

43
sound/usb/usx2y/usb_stream.c
View File

@ -8,12 +8,12 @@
#include "usb_stream.h"
/* setup */
static unsigned 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;
}
@ -25,6 +25,7 @@ static void playback_prep_freqn(struct usb_stream_kernel *sk, struct urb *urb)
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;
@ -56,6 +57,7 @@ static int init_pipe_urbs(struct usb_stream_kernel *sk, unsigned use_packsize,
++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;
@ -84,9 +86,8 @@ static int init_urbs(struct usb_stream_kernel *sk, unsigned 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;
char *indata =
(char *)s + sizeof(*s) + sizeof(struct usb_stream_packet) * s->inpackets;
int u;
for (u = 0; u < USB_STREAM_NURBS; ++u) {
@ -107,7 +108,6 @@ static int init_urbs(struct usb_stream_kernel *sk, unsigned use_packsize,
return 0;
}
/*
* convert a sampling rate into our full speed format (fs/1000 in Q16.16)
* this will overflow at approx 524 kHz
@ -231,12 +231,12 @@ 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);
@ -267,6 +267,7 @@ static void subs_set_complete(struct urb **urbs, void (*complete)(struct urb *))
for (u = 0; u < USB_STREAM_NURBS; u++) {
struct urb *urb = urbs[u];
urb->complete = complete;
}
}
@ -284,6 +285,7 @@ static int usb_stream_prepare_playback(struct usb_stream_kernel *sk,
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;
@ -351,6 +353,7 @@ 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)
@ -447,6 +450,7 @@ static void stream_idle(struct usb_stream_kernel *sk,
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",
@ -503,6 +507,7 @@ err_out:
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);
}
@ -510,6 +515,7 @@ static void i_capture_idle(struct urb *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);
}
@ -518,10 +524,12 @@ 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 frames_per_packet, min_frames = 0;
frames_per_packet = (s->period_size - s->idle_insize);
frames_per_packet <<= 8;
frames_per_packet /=
@ -536,6 +544,7 @@ static void stream_start(struct usb_stream_kernel *sk,
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;
@ -562,6 +571,7 @@ static void stream_start(struct usb_stream_kernel *sk,
s->next_inpacket_split_at = 0;
} else {
unsigned split = s->inpacket_head;
l = s->idle_insize;
while (l > s->inpacket[split].length) {
l -= s->inpacket[split].length;
@ -609,6 +619,7 @@ static void i_capture_start(struct urb *urb)
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) {
@ -628,6 +639,7 @@ static void i_capture_start(struct urb *urb)
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");
@ -643,6 +655,7 @@ static void i_capture_start(struct urb *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);
}
@ -671,6 +684,7 @@ dotry:
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 =
@ -680,6 +694,7 @@ dotry:
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);
@ -688,14 +703,16 @@ dotry:
}
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);
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);
snd_printk(KERN_ERR
"usb_submit_urb(sk->outurb[%i]) returned %i\n",
u, err);
return err;
}
@ -716,8 +733,8 @@ check_retry:
snd_printd(KERN_DEBUG "goto dotry;\n");
goto dotry;
}
snd_printk(KERN_WARNING"couldn't start"
" all urbs on the same start_frame.\n");
snd_printk(KERN_WARNING
"couldn't start all urbs on the same start_frame.\n");
return -EFAULT;
}
@ -729,6 +746,7 @@ check_retry:
/* 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);
@ -745,6 +763,7 @@ check_retry:
void usb_stream_stop(struct usb_stream_kernel *sk)
{
int u;
if (!sk->s)
return;
for (u = 0; u < USB_STREAM_NURBS; ++u) {

18
sound/usb/usx2y/usbus428ctldefs.h
View File

@ -39,15 +39,15 @@ enum E_IN84 {
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];
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 {

78
sound/usb/usx2y/usbusx2y.c
View File

@ -70,7 +70,7 @@
2003-11-03 Karsten Wiese
Version 0.3:
24Bit support.
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
@ -94,16 +94,15 @@
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
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.
"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.
@ -115,7 +114,7 @@
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>
@ -132,14 +131,12 @@
#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 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);
@ -149,22 +146,23 @@ 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 usx2y_usb_disconnect(struct usb_device* usb_device, void* ptr);
static void usx2y_usb_disconnect(struct usb_device *usb_device, void *ptr);
static void snd_usx2y_card_private_free(struct snd_card *card);
/*
* pipe 4 is used for switching the lamps, setting samplerate, volumes ....
/*
* 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;
int i;
struct usx2ydev *usx2y = urb->context;
for (i = 0; i < 10 && usx2y->as04.urb[i] != urb; i++);
for (i = 0; i < 10 && usx2y->as04.urb[i] != urb; i++)
;
snd_printdd("i_usx2y_out04_int() urb %i status=%i\n", i, urb->status);
}
#endif
@ -186,22 +184,25 @@ static void i_usx2y_in04_int(struct urb *urb)
// 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) {
int diff = -1;
if (-2 == us428ctls->ctl_snapshot_last) {
diff = 0;
memcpy(usx2y->in04_last, usx2y->in04_buf, sizeof(usx2y->in04_last));
us428ctls->ctl_snapshot_last = -1;
} else {
int i;
for (i = 0; i < 21; i++) {
if (usx2y->in04_last[i] != ((char*)usx2y->in04_buf)[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];
usx2y->in04_last[i] = ((char *)usx2y->in04_buf)[i];
}
}
}
if (0 <= diff) {
int 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]));
@ -210,8 +211,7 @@ static void i_usx2y_in04_int(struct urb *urb)
wake_up(&usx2y->us428ctls_wait_queue_head);
}
}
if (usx2y->us04) {
if (0 == usx2y->us04->submitted)
do {
@ -221,11 +221,13 @@ static void i_usx2y_in04_int(struct urb *urb)
if (us428ctls && us428ctls->p4out_last >= 0 && us428ctls->p4out_last < N_US428_P4OUT_BUFS) {
if (us428ctls->p4out_last != us428ctls->p4out_sent) {
int j, send = us428ctls->p4out_sent + 1;
if (send >= N_US428_P4OUT_BUFS)
send = 0;
for (j = 0; j < URBS_ASYNC_SEQ && !err; ++j)
if (0 == usx2y->as04.urb[j]->status) {
struct us428_p4out *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,
@ -249,8 +251,7 @@ static void i_usx2y_in04_int(struct urb *urb)
*/
int usx2y_async_seq04_init(struct usx2ydev *usx2y)
{
int err = 0,
i;
int err = 0, i;
usx2y->as04.buffer = kmalloc_array(URBS_ASYNC_SEQ,
URB_DATA_LEN_ASYNC_SEQ, GFP_KERNEL);
@ -262,11 +263,10 @@ int usx2y_async_seq04_init(struct usx2ydev *usx2y)
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
);
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;
@ -276,12 +276,12 @@ int usx2y_async_seq04_init(struct usx2ydev *usx2y)
int usx2y_in04_init(struct usx2ydev *usx2y)
{
if (! (usx2y->in04_urb = usb_alloc_urb(0, GFP_KERNEL)))
if (!(usx2y->in04_urb = usb_alloc_urb(0, GFP_KERNEL)))
return -ENOMEM;
if (! (usx2y->in04_buf = kmalloc(21, GFP_KERNEL)))
if (!(usx2y->in04_buf = kmalloc(21, GFP_KERNEL)))
return -ENOMEM;
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,
@ -295,6 +295,7 @@ int usx2y_in04_init(struct usx2ydev *usx2y)
static void usx2y_unlinkseq(struct snd_usx2y_async_seq *s)
{
int i;
for (i = 0; i < URBS_ASYNC_SEQ; ++i) {
usb_kill_urb(s->urb[i]);
usb_free_urb(s->urb[i]);
@ -303,32 +304,32 @@ static void usx2y_unlinkseq(struct snd_usx2y_async_seq *s)
kfree(s->buffer);
}
static const struct usb_device_id snd_usx2y_usb_id_table[] = {
{
.match_flags = USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x1604,
.idProduct = USB_ID_US428
.idProduct = USB_ID_US428
},
{
.match_flags = USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x1604,
.idProduct = USB_ID_US122
.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;
struct snd_card *card;
int err;
for (dev = 0; dev < SNDRV_CARDS; ++dev)
@ -349,7 +350,7 @@ static int usx2y_create_card(struct usb_device *device,
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,
card->shortname,
le16_to_cpu(device->descriptor.idVendor),
le16_to_cpu(device->descriptor.idProduct),
0,//us428(card)->usbmidi.ifnum,
@ -359,14 +360,13 @@ static int usx2y_create_card(struct usb_device *device,
return 0;
}
static int usx2y_usb_probe(struct usb_device *device,
struct usb_interface *intf,
const struct usb_device_id *device_id,
struct snd_card **cardp)
{
int err;
struct snd_card * card;
struct snd_card *card;
*cardp = NULL;
if (le16_to_cpu(device->descriptor.idVendor) != 0x1604 ||
@ -408,7 +408,6 @@ static void snd_usx2y_disconnect(struct usb_interface *intf)
usb_get_intfdata(intf));
}
MODULE_DEVICE_TABLE(usb, snd_usx2y_usb_id_table);
static struct usb_driver snd_usx2y_usb_driver = {
.name = "snd-usb-usx2y",
.probe = snd_usx2y_probe,
@ -430,12 +429,13 @@ static void snd_usx2y_card_private_free(struct snd_card *card)
/*
* Frees the device.
*/
static void usx2y_usb_disconnect(struct usb_device *device, void* ptr)
static void usx2y_usb_disconnect(struct usb_device *device, void *ptr)
{
if (ptr) {
struct snd_card *card = ptr;
struct usx2ydev *usx2y = usx2y(card);
struct list_head *p;
usx2y->chip_status = USX2Y_STAT_CHIP_HUP;
usx2y_unlinkseq(&usx2y->as04);
usb_kill_urb(usx2y->in04_urb);
@ -444,7 +444,7 @@ static void usx2y_usb_disconnect(struct usb_device *device, void* ptr)
list_for_each(p, &usx2y->midi_list) {
snd_usbmidi_disconnect(p);
}
if (usx2y->us428ctls_sharedmem)
if (usx2y->us428ctls_sharedmem)
wake_up(&usx2y->us428ctls_wait_queue_head);
snd_card_free(card);
}

6
sound/usb/usx2y/usbusx2y.h
View File

@ -3,9 +3,9 @@
#define USBUSX2Y_H
#include "../usbaudio.h"
#include "../midi.h"
#include "usbus428ctldefs.h"
#include "usbus428ctldefs.h"
#define NRURBS 2
#define NRURBS 2
#define URBS_ASYNC_SEQ 10
@ -55,7 +55,7 @@ struct snd_usx2y_substream {
struct usx2ydev *usx2y;
struct snd_pcm_substream *pcm_substream;
int endpoint;
int endpoint;
unsigned int maxpacksize; /* max packet size in bytes */
atomic_t state;

140
sound/usb/usx2y/usbusx2yaudio.c
View File

@ -11,7 +11,7 @@
*
* Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
*
* Many codes borrowed from audio.c by
* Many codes borrowed from audio.c by
* Alan Cox (alan@lxorguk.ukuu.org.uk)
* Thomas Sailer (sailer@ife.ee.ethz.ch)
*/
@ -28,50 +28,51 @@
#include "usx2y.h"
#include "usbusx2y.h"
#define USX2Y_NRPACKS 4 /* 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_VARIABLE y /* 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.
*/
/* 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.");
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
#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 i, len, lens = 0, hwptr_done = subs->hwptr_done;
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;
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",
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) {
if (!len) {
snd_printd("0 == len ERROR!\n");
continue;
}
@ -80,6 +81,7 @@ static int usx2y_urb_capt_retire(struct snd_usx2y_substream *subs)
if ((hwptr_done + len) > runtime->buffer_size) {
int cnt = runtime->buffer_size - hwptr_done;
int 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 {
@ -100,6 +102,7 @@ static int usx2y_urb_capt_retire(struct snd_usx2y_substream *subs)
}
return 0;
}
/*
* prepare urb for playback data pipe
*
@ -140,6 +143,7 @@ static int usx2y_urb_play_prepare(struct snd_usx2y_substream *subs,
* copy the data to the temp buffer.
*/
int len;
len = runtime->buffer_size - subs->hwptr;
urb->transfer_buffer = subs->tmpbuf;
memcpy(subs->tmpbuf, runtime->dma_area +
@ -183,6 +187,7 @@ static void usx2y_urb_play_retire(struct snd_usx2y_substream *subs, struct urb *
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
@ -243,13 +248,13 @@ static inline int usx2y_usbframe_complete(struct snd_usx2y_substream *capsubs,
return 0;
}
static void usx2y_clients_stop(struct usx2ydev *usx2y)
{
int s, u;
for (s = 0; s < 4; s++) {
struct snd_usx2y_substream *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);
@ -257,11 +262,13 @@ static void usx2y_clients_stop(struct usx2ydev *usx2y)
}
for (s = 0; s < 4; s++) {
struct snd_usx2y_substream *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++) {
struct urb *urb = subs->urb[u];
if (NULL != urb)
snd_printdd("%i status=%i start_frame=%i\n",
u, urb->status, urb->start_frame);
@ -302,6 +309,7 @@ static void i_usx2y_urb_complete(struct urb *urb)
{
struct snd_usx2y_substream *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 ||
@ -316,22 +324,25 @@ static void i_usx2y_urb_complete(struct urb *urb)
}
}
static void usx2y_urbs_set_complete(struct usx2ydev * usx2y,
static void usx2y_urbs_set_complete(struct usx2ydev *usx2y,
void (*complete)(struct urb *))
{
int s, u;
for (s = 0; s < 4; s++) {
struct snd_usx2y_substream *subs = usx2y->subs[s];
if (NULL != subs)
for (u = 0; u < NRURBS; u++) {
struct urb * urb = subs->urb[u];
struct urb *urb = subs->urb[u];
if (NULL != urb)
urb->complete = complete;
}
}
}
static void usx2y_subs_startup_finish(struct usx2ydev * usx2y)
static void usx2y_subs_startup_finish(struct usx2ydev *usx2y)
{
usx2y_urbs_set_complete(usx2y, i_usx2y_urb_complete);
usx2y->prepare_subs = NULL;
@ -342,6 +353,7 @@ 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 (NULL != prepare_subs)
if (urb->start_frame == prepare_subs->urb[0]->start_frame) {
usx2y_subs_startup_finish(usx2y);
@ -362,7 +374,6 @@ static void usx2y_subs_prepare(struct snd_usx2y_substream *subs)
subs->transfer_done = 0;
}
static void usx2y_urb_release(struct urb **urb, int free_tb)
{
if (*urb) {
@ -373,12 +384,14 @@ static void usx2y_urb_release(struct urb **urb, int free_tb)
*urb = NULL;
}
}
/*
* release a substreams urbs
*/
static void usx2y_urbs_release(struct snd_usx2y_substream *subs)
{
int i;
snd_printdd("usx2y_urbs_release() %i\n", subs->endpoint);
for (i = 0; i < NRURBS; i++)
usx2y_urb_release(subs->urb + i,
@ -387,6 +400,7 @@ static void usx2y_urbs_release(struct snd_usx2y_substream *subs)
kfree(subs->tmpbuf);
subs->tmpbuf = NULL;
}
/*
* initialize a substream's urbs
*/
@ -411,6 +425,7 @@ static int usx2y_urbs_allocate(struct snd_usx2y_substream *subs)
/* allocate and initialize data urbs */
for (i = 0; i < NRURBS; i++) {
struct urb **purb = subs->urb + i;
if (*purb) {
usb_kill_urb(*purb);
continue;
@ -443,6 +458,7 @@ static int usx2y_urbs_allocate(struct snd_usx2y_substream *subs)
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();
@ -459,6 +475,7 @@ static int usx2y_urbs_start(struct snd_usx2y_substream *subs)
subs->completed_urb = NULL;
for (i = 0; i < 4; i++) {
struct snd_usx2y_substream *subs = usx2y->subs[i];
if (subs != NULL && atomic_read(&subs->state) >= STATE_PREPARED)
goto start;
}
@ -467,8 +484,10 @@ static int usx2y_urbs_start(struct snd_usx2y_substream *subs)
usx2y_subs_startup(subs);
for (i = 0; i < NRURBS; i++) {
struct urb *urb = subs->urb[i];
if (usb_pipein(urb->pipe)) {
unsigned long pack;
if (0 == i)
atomic_set(&subs->state, STATE_STARTING3);
urb->dev = usx2y->dev;
@ -476,9 +495,9 @@ static int usx2y_urbs_start(struct snd_usx2y_substream *subs)
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();
urb->transfer_buffer_length = subs->maxpacksize * nr_of_packs();
if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
snd_printk (KERN_ERR "cannot submit datapipe for urb %d, err = %d\n", i, err);
snd_printk(KERN_ERR "cannot submit datapipe for urb %d, err = %d\n", i, err);
err = -EPIPE;
goto cleanup;
} else
@ -509,8 +528,10 @@ static int usx2y_urbs_start(struct snd_usx2y_substream *subs)
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
*/
@ -540,7 +561,6 @@ static int snd_usx2y_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
return 0;
}
/*
* allocate a buffer, setup samplerate
*
@ -553,8 +573,7 @@ static const struct s_c2
{
char c1, c2;
}
setrate_44100[] =
{
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},
@ -589,8 +608,8 @@ static const struct s_c2
{ 0x18, 0x7C},
{ 0x18, 0x7E}
};
static const struct s_c2 setrate_48000[] =
{
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},
@ -625,12 +644,13 @@ static const struct s_c2 setrate_48000[] =
{ 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 (0 == --usx2y->us04->len)
@ -645,7 +665,7 @@ static int usx2y_rate_set(struct usx2ydev *usx2y, int rate)
const struct s_c2 *ra = rate == 48000 ? setrate_48000 : setrate_44100;
if (usx2y->rate != rate) {
us = kzalloc(sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS, GFP_KERNEL);
us = kzalloc(sizeof(*us) + sizeof(struct urb *) * NOOF_SETRATE_URBS, GFP_KERNEL);
if (NULL == us) {
err = -ENOMEM;
goto cleanup;
@ -661,8 +681,8 @@ static int usx2y_rate_set(struct usx2ydev *usx2y, int rate)
err = -ENOMEM;
goto cleanup;
}
((char*)(usbdata + i))[0] = ra[i].c1;
((char*)(usbdata + i))[1] = ra[i].c2;
((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);
}
@ -681,6 +701,7 @@ static int usx2y_rate_set(struct usx2ydev *usx2y, int rate)
us->submitted = 2*NOOF_SETRATE_URBS;
for (i = 0; i < NOOF_SETRATE_URBS; ++i) {
struct urb *urb = us->urb[i];
if (!urb)
continue;
if (urb->status) {
@ -705,7 +726,8 @@ static int usx2y_rate_set(struct usx2ydev *usx2y, int rate)
static int usx2y_format_set(struct usx2ydev *usx2y, snd_pcm_format_t format)
{
int alternate, err;
struct list_head* p;
struct list_head *p;
if (format == SNDRV_PCM_FORMAT_S24_3LE) {
alternate = 2;
usx2y->stride = 6;
@ -718,7 +740,7 @@ static int usx2y_format_set(struct usx2ydev *usx2y, snd_pcm_format_t format)
}
usb_kill_urb(usx2y->in04_urb);
if ((err = usb_set_interface(usx2y->dev, 0, alternate))) {
snd_printk(KERN_ERR "usb_set_interface error \n");
snd_printk(KERN_ERR "usb_set_interface error\n");
return err;
}
usx2y->in04_urb->dev = usx2y->dev;
@ -778,11 +800,13 @@ 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;
mutex_lock(&subs->usx2y->pcm_mutex);
snd_printdd("snd_usx2y_hw_free(%p)\n", substream);
if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
struct snd_usx2y_substream *cap_subs = subs->usx2y->subs[SNDRV_PCM_STREAM_CAPTURE];
atomic_set(&subs->state, STATE_STOPPED);
usx2y_urbs_release(subs);
if (!cap_subs->pcm_substream ||
@ -794,6 +818,7 @@ static int snd_usx2y_pcm_hw_free(struct snd_pcm_substream *substream)
}
} else {
struct snd_usx2y_substream *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);
@ -802,6 +827,7 @@ static int snd_usx2y_pcm_hw_free(struct snd_pcm_substream *substream)
mutex_unlock(&subs->usx2y->pcm_mutex);
return 0;
}
/*
* prepare callback
*
@ -814,12 +840,13 @@ static int snd_usx2y_pcm_prepare(struct snd_pcm_substream *substream)
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);
usx2y_subs_prepare(subs);
// Start hardware streams
// SyncStream first....
// Start hardware streams
// SyncStream first....
if (atomic_read(&capsubs->state) < STATE_PREPARED) {
if (usx2y->format != runtime->format)
if ((err = usx2y_format_set(usx2y, runtime->format)) < 0)
@ -840,8 +867,7 @@ static int snd_usx2y_pcm_prepare(struct snd_pcm_substream *substream)
return err;
}
static const struct snd_pcm_hardware snd_usx2y_2c =
{
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 |
@ -860,8 +886,6 @@ static const struct snd_pcm_hardware snd_usx2y_2c =
.fifo_size = 0
};
static int snd_usx2y_pcm_open(struct snd_pcm_substream *substream)
{
struct snd_usx2y_substream *subs = ((struct snd_usx2y_substream **)
@ -878,8 +902,6 @@ static int snd_usx2y_pcm_open(struct snd_pcm_substream *substream)
return 0;
}
static int snd_usx2y_pcm_close(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
@ -890,9 +912,7 @@ static int snd_usx2y_pcm_close(struct snd_pcm_substream *substream)
return 0;
}
static const struct snd_pcm_ops snd_usx2y_pcm_ops =
{
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,
@ -902,7 +922,6 @@ static const struct snd_pcm_ops snd_usx2y_pcm_ops =
.pointer = snd_usx2y_pcm_pointer,
};
/*
* free a usb stream instance
*/
@ -919,6 +938,7 @@ static void usx2y_audio_stream_free(struct snd_usx2y_substream **usx2y_substream
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);
}
@ -983,14 +1003,14 @@ static int usx2y_audio_stream_new(struct snd_card *card, int playback_endpoint,
int usx2y_audio_create(struct snd_card *card)
{
int err = 0;
INIT_LIST_HEAD(&usx2y(card)->pcm_list);
if (0 > (err = usx2y_audio_stream_new(card, 0xA, 0x8)))
return err;
if (le16_to_cpu(usx2y(card)->dev->descriptor.idProduct) == USB_ID_US428)
if (0 > (err = usx2y_audio_stream_new(card, 0, 0xA)))
return err;
if (0 > (err = usx2y_audio_stream_new(card, 0, 0xA)))
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;

90
sound/usb/usx2y/usx2yhwdeppcm.c
View File

@ -6,7 +6,7 @@
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:
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:
@ -35,7 +35,7 @@
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.
Currently rawusb dma pcm buffer transport (this file) is only available to snd-usb-usx2y.
*/
#include <linux/delay.h>
@ -46,15 +46,16 @@
#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;
int i, lens = 0, hwptr_done = subs->hwptr_done;
struct usx2ydev *usx2y = subs->usx2y;
if (0 > usx2y->hwdep_pcm_shm->capture_iso_start) { //FIXME
int 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;
@ -62,7 +63,9 @@ static int usx2y_usbpcm_urb_capt_retire(struct snd_usx2y_substream *subs)
}
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);
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;
@ -80,7 +83,7 @@ static int usx2y_usbpcm_urb_capt_retire(struct snd_usx2y_substream *subs)
}
static inline int usx2y_iso_frames_per_buffer(struct snd_pcm_runtime *runtime,
struct usx2ydev * usx2y)
struct usx2ydev *usx2y)
{
return (runtime->buffer_size * 1000) / usx2y->rate + 1; //FIXME: so far only correct period_size == 2^x ?
}
@ -133,16 +136,18 @@ static int usx2y_hwdep_urb_play_prepare(struct snd_usx2y_substream *subs,
return 0;
}
static inline void usx2y_usbpcm_urb_capt_iso_advance(struct snd_usx2y_substream *subs,
struct urb *urb)
{
int pack;
for (pack = 0; pack < nr_of_packs(); ++pack) {
struct usb_iso_packet_descriptor *desc = urb->iso_frame_desc + pack;
if (NULL != subs) {
struct snd_usx2y_hwdep_pcm_shm *shm = subs->usx2y->hwdep_pcm_shm;
int head = shm->captured_iso_head + 1;
if (head >= ARRAY_SIZE(shm->captured_iso))
head = 0;
shm->captured_iso[head].frame = urb->start_frame + pack;
@ -189,7 +194,7 @@ static inline int usx2y_usbpcm_usbframe_complete(struct snd_usx2y_substream *cap
return err;
}
}
playbacksubs->completed_urb = NULL;
state = atomic_read(&capsubs->state);
@ -214,7 +219,6 @@ static inline int usx2y_usbpcm_usbframe_complete(struct snd_usx2y_substream *cap
return 0;
}
static void i_usx2y_usbpcm_urb_complete(struct urb *urb)
{
struct snd_usx2y_substream *subs = urb->context;
@ -249,7 +253,6 @@ static void i_usx2y_usbpcm_urb_complete(struct urb *urb)
}
}
static void usx2y_hwdep_urb_release(struct urb **urb)
{
usb_kill_urb(*urb);
@ -263,12 +266,13 @@ static void usx2y_hwdep_urb_release(struct urb **urb)
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)
static void usx2y_usbpcm_subs_startup_finish(struct usx2ydev *usx2y)
{
usx2y_urbs_set_complete(usx2y, i_usx2y_usbpcm_urb_complete);
usx2y->prepare_subs = NULL;
@ -279,11 +283,13 @@ 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;
if (NULL != 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]) {
struct snd_usx2y_substream *cap_subs2 = usx2y->subs[SNDRV_PCM_STREAM_CAPTURE + 2];
if (cap_subs2 != NULL)
atomic_inc(&cap_subs2->state);
}
@ -313,6 +319,7 @@ static int usx2y_usbpcm_urbs_allocate(struct snd_usx2y_substream *subs)
/* allocate and initialize data urbs */
for (i = 0; i < NRURBS; i++) {
struct urb **purb = subs->urb + i;
if (*purb) {
usb_kill_urb(*purb);
continue;
@ -346,11 +353,13 @@ 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,
*cap_subs2 = subs->usx2y->subs[SNDRV_PCM_STREAM_CAPTURE + 2];
mutex_lock(&subs->usx2y->pcm_mutex);
snd_printdd("snd_usx2y_usbpcm_hw_free(%p)\n", substream);
if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
struct snd_usx2y_substream *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 ||
@ -366,6 +375,7 @@ static int snd_usx2y_usbpcm_hw_free(struct snd_pcm_substream *substream)
}
} else {
struct snd_usx2y_substream *playback_subs = subs->usx2y->subs[SNDRV_PCM_STREAM_PLAYBACK];
if (atomic_read(&playback_subs->state) < STATE_PREPARED) {
atomic_set(&subs->state, STATE_STOPPED);
if (NULL != cap_subs2)
@ -381,7 +391,8 @@ static int snd_usx2y_usbpcm_hw_free(struct snd_pcm_substream *substream)
static void usx2y_usbpcm_subs_startup(struct snd_usx2y_substream *subs)
{
struct usx2ydev * usx2y = subs->usx2y;
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()
@ -390,8 +401,7 @@ static void usx2y_usbpcm_subs_startup(struct snd_usx2y_substream *subs)
static int usx2y_usbpcm_urbs_start(struct snd_usx2y_substream *subs)
{
int p, u, err,
stream = subs->pcm_substream->stream;
int p, u, err, stream = subs->pcm_substream->stream;
struct usx2ydev *usx2y = subs->usx2y;
if (SNDRV_PCM_STREAM_CAPTURE == stream) {
@ -410,6 +420,7 @@ static int usx2y_usbpcm_urbs_start(struct snd_usx2y_substream *subs)
for (p = 0; p < 4; p++) {
struct snd_usx2y_substream *subs = usx2y->subs[p];
if (subs != NULL && atomic_read(&subs->state) >= STATE_PREPARED)
goto start;
}
@ -419,10 +430,13 @@ static int usx2y_usbpcm_urbs_start(struct snd_usx2y_substream *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 != NULL) {
struct urb *urb = subs->urb[u];
if (usb_pipein(urb->pipe)) {
unsigned long pack;
if (0 == u)
atomic_set(&subs->state, STATE_STARTING3);
urb->dev = usx2y->dev;
@ -430,9 +444,9 @@ static int usx2y_usbpcm_urbs_start(struct snd_usx2y_substream *subs)
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();
urb->transfer_buffer_length = subs->maxpacksize * nr_of_packs();
if ((err = usb_submit_urb(urb, GFP_KERNEL)) < 0) {
snd_printk (KERN_ERR "cannot usb_submit_urb() for urb %d, err = %d\n", u, err);
snd_printk(KERN_ERR "cannot usb_submit_urb() for urb %d, err = %d\n", u, err);
err = -EPIPE;
goto cleanup;
} else {
@ -444,7 +458,7 @@ static int usx2y_usbpcm_urbs_start(struct snd_usx2y_substream *subs)
} else {
atomic_set(&subs->state, STATE_STARTING1);
break;
}
}
}
}
}
@ -452,11 +466,11 @@ static int usx2y_usbpcm_urbs_start(struct snd_usx2y_substream *subs)
wait_event(usx2y->prepare_wait_queue, NULL == 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 wroong > stop evrything
usx2y_clients_stop(usx2y); // something is completely wroong > stop evrything
}
return err;
}
@ -473,6 +487,7 @@ static int snd_usx2y_usbpcm_prepare(struct snd_pcm_substream *substream)
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);
if (NULL == usx2y->hwdep_pcm_shm) {
@ -485,8 +500,8 @@ static int snd_usx2y_usbpcm_prepare(struct snd_pcm_substream *substream)
mutex_lock(&usx2y->pcm_mutex);
usx2y_subs_prepare(subs);
// Start hardware streams
// SyncStream first....
// Start hardware streams
// SyncStream first....
if (atomic_read(&capsubs->state) < STATE_PREPARED) {
if (usx2y->format != runtime->format)
if ((err = usx2y_format_set(usx2y, runtime->format)) < 0)
@ -505,15 +520,14 @@ static int snd_usx2y_usbpcm_prepare(struct snd_pcm_substream *substream)
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",
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;
}
}
}
if (0 > (err = usx2y_usbpcm_urbs_start(subs)))
goto up_prepare_mutex;
}
@ -528,8 +542,7 @@ static int snd_usx2y_usbpcm_prepare(struct snd_pcm_substream *substream)
return err;
}
static const struct snd_pcm_hardware snd_usx2y_4c =
{
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),
@ -547,8 +560,6 @@ static const struct snd_pcm_hardware snd_usx2y_4c =
.fifo_size = 0
};
static int snd_usx2y_usbpcm_open(struct snd_pcm_substream *substream)
{
struct snd_usx2y_substream *subs = ((struct snd_usx2y_substream **)
@ -566,7 +577,6 @@ static int snd_usx2y_usbpcm_open(struct snd_pcm_substream *substream)
return 0;
}
static int snd_usx2y_usbpcm_close(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
@ -576,9 +586,7 @@ static int snd_usx2y_usbpcm_close(struct snd_pcm_substream *substream)
return 0;
}
static const struct snd_pcm_ops snd_usx2y_usbpcm_ops =
{
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,
@ -588,7 +596,6 @@ static const struct snd_pcm_ops snd_usx2y_usbpcm_ops =
.pointer = snd_usx2y_pcm_pointer,
};
static int usx2y_pcms_busy_check(struct snd_card *card)
{
struct usx2ydev *dev = usx2y(card);
@ -596,6 +603,7 @@ static int usx2y_pcms_busy_check(struct snd_card *card)
for (i = 0; i < dev->pcm_devs * 2; i++) {
struct snd_usx2y_substream *subs = dev->subs[i];
if (subs && subs->pcm_substream &&
SUBSTREAM_BUSY(subs->pcm_substream))
return -EBUSY;
@ -616,7 +624,6 @@ static int snd_usx2y_hwdep_pcm_open(struct snd_hwdep *hw, struct file *file)
return err;
}
static int snd_usx2y_hwdep_pcm_release(struct snd_hwdep *hw, struct file *file)
{
struct snd_card *card = hw->card;
@ -630,17 +637,14 @@ static int snd_usx2y_hwdep_pcm_release(struct snd_hwdep *hw, struct file *file)
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;
@ -653,15 +657,13 @@ static vm_fault_t snd_usx2y_hwdep_pcm_vm_fault(struct vm_fault *vmf)
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)
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;
@ -669,9 +671,9 @@ static int snd_usx2y_hwdep_pcm_mmap(struct snd_hwdep * hw, struct file *filp, st
if (!(usx2y->chip_status & USX2Y_STAT_CHIP_INIT))
return -EBUSY;
/* if userspace tries to mmap beyond end of our buffer, fail */
/* if userspace tries to mmap beyond end of our buffer, fail */
if (size > PAGE_ALIGN(sizeof(struct snd_usx2y_hwdep_pcm_shm))) {
snd_printd("%lu > %lu\n", size, (unsigned long)sizeof(struct snd_usx2y_hwdep_pcm_shm));
snd_printd("%lu > %lu\n", size, (unsigned long)sizeof(struct snd_usx2y_hwdep_pcm_shm));
return -EINVAL;
}
@ -684,21 +686,21 @@ static int snd_usx2y_hwdep_pcm_mmap(struct snd_hwdep * hw, struct file *filp, st
return 0;
}
static void snd_usx2y_hwdep_pcm_private_free(struct snd_hwdep *hwdep)
{
struct usx2ydev *usx2y = hwdep->private_data;
if (NULL != usx2y->hwdep_pcm_shm)
free_pages_exact(usx2y->hwdep_pcm_shm, sizeof(struct snd_usx2y_hwdep_pcm_shm));
}
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 (1 != nr_of_packs())
return 0;