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Merge branch 'topic/usb-audio' into for-linus

Browse Source 
* topic/usb-audio:
  ALSA: usb-audio - Fix types taken in min()
  sound: usb-audio: do not make URBs longer than sync packet interval
  sound: usb-audio: add MIDI drain callback
  sound: usb-audio: use multiple output URBs
  sound: usb-audio: use multiple input URBs
  sound: usb-audio: Xonar U1 digital output support
This commit is contained in:
Takashi Iwai 2009-09-10 15:33:07 +02:00
commit fd30afa454
3 changed files with 256 additions and 96 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sound/usb/usbaudio.c
View File

@ -1083,6 +1083,8 @@ static int init_substream_urbs(struct snd_usb_substream *subs, unsigned int peri
} else
urb_packs = 1;
urb_packs *= packs_per_ms;
if (subs->syncpipe)
urb_packs = min(urb_packs, 1U << subs->syncinterval);
/* decide how many packets to be used */
if (is_playback) {

290
sound/usb/usbmidi.c
View File

@ -45,6 +45,7 @@
#include <linux/slab.h>
#include <linux/timer.h>
#include <linux/usb.h>
#include <linux/wait.h>
#include <sound/core.h>
#include <sound/rawmidi.h>
#include <sound/asequencer.h>
@ -62,6 +63,9 @@
*/
#define ERROR_DELAY_JIFFIES (HZ / 10)
#define OUTPUT_URBS 7
#define INPUT_URBS 7
MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
MODULE_DESCRIPTION("USB Audio/MIDI helper module");
@ -90,7 +94,7 @@ struct snd_usb_midi_endpoint;
struct usb_protocol_ops {
void (*input)(struct snd_usb_midi_in_endpoint*, uint8_t*, int);
void (*output)(struct snd_usb_midi_out_endpoint*);
void (*output)(struct snd_usb_midi_out_endpoint *ep, struct urb *urb);
void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t);
void (*init_out_endpoint)(struct snd_usb_midi_out_endpoint*);
void (*finish_out_endpoint)(struct snd_usb_midi_out_endpoint*);
@ -116,11 +120,15 @@ struct snd_usb_midi {
struct snd_usb_midi_out_endpoint {
struct snd_usb_midi* umidi;
struct urb* urb;
int urb_active;
struct out_urb_context {
struct urb *urb;
struct snd_usb_midi_out_endpoint *ep;
} urbs[OUTPUT_URBS];
unsigned int active_urbs;
unsigned int drain_urbs;
int max_transfer; /* size of urb buffer */
struct tasklet_struct tasklet;
unsigned int next_urb;
spinlock_t buffer_lock;
struct usbmidi_out_port {
@ -139,11 +147,13 @@ struct snd_usb_midi_out_endpoint {
uint8_t data[2];
} ports[0x10];
int current_port;
wait_queue_head_t drain_wait;
};
struct snd_usb_midi_in_endpoint {
struct snd_usb_midi* umidi;
struct urb* urb;
struct urb* urbs[INPUT_URBS];
struct usbmidi_in_port {
struct snd_rawmidi_substream *substream;
u8 running_status_length;
@ -251,10 +261,17 @@ static void snd_usbmidi_in_urb_complete(struct urb* urb)
static void snd_usbmidi_out_urb_complete(struct urb* urb)
{
struct snd_usb_midi_out_endpoint* ep = urb->context;
struct out_urb_context *context = urb->context;
struct snd_usb_midi_out_endpoint* ep = context->ep;
unsigned int urb_index;
spin_lock(&ep->buffer_lock);
ep->urb_active = 0;
urb_index = context - ep->urbs;
ep->active_urbs &= ~(1 << urb_index);
if (unlikely(ep->drain_urbs)) {
ep->drain_urbs &= ~(1 << urb_index);
wake_up(&ep->drain_wait);
}
spin_unlock(&ep->buffer_lock);
if (urb->status < 0) {
int err = snd_usbmidi_urb_error(urb->status);
@ -274,24 +291,38 @@ static void snd_usbmidi_out_urb_complete(struct urb* urb)
*/
static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep)
{
struct urb* urb = ep->urb;
unsigned int urb_index;
struct urb* urb;
unsigned long flags;
spin_lock_irqsave(&ep->buffer_lock, flags);
if (ep->urb_active || ep->umidi->chip->shutdown) {
if (ep->umidi->chip->shutdown) {
spin_unlock_irqrestore(&ep->buffer_lock, flags);
return;
}
urb->transfer_buffer_length = 0;
ep->umidi->usb_protocol_ops->output(ep);
urb_index = ep->next_urb;
for (;;) {
if (!(ep->active_urbs & (1 << urb_index))) {
urb = ep->urbs[urb_index].urb;
urb->transfer_buffer_length = 0;
ep->umidi->usb_protocol_ops->output(ep, urb);
if (urb->transfer_buffer_length == 0)
break;
if (urb->transfer_buffer_length > 0) {
dump_urb("sending", urb->transfer_buffer,
urb->transfer_buffer_length);
urb->dev = ep->umidi->chip->dev;
ep->urb_active = snd_usbmidi_submit_urb(urb, GFP_ATOMIC) >= 0;
dump_urb("sending", urb->transfer_buffer,
urb->transfer_buffer_length);
urb->dev = ep->umidi->chip->dev;
if (snd_usbmidi_submit_urb(urb, GFP_ATOMIC) < 0)
break;
ep->active_urbs |= 1 << urb_index;
}
if (++urb_index >= OUTPUT_URBS)
urb_index = 0;
if (urb_index == ep->next_urb)
break;
}
ep->next_urb = urb_index;
spin_unlock_irqrestore(&ep->buffer_lock, flags);
}
@ -306,7 +337,7 @@ static void snd_usbmidi_out_tasklet(unsigned long data)
static void snd_usbmidi_error_timer(unsigned long data)
{
struct snd_usb_midi *umidi = (struct snd_usb_midi *)data;
int i;
unsigned int i, j;
spin_lock(&umidi->disc_lock);
if (umidi->disconnected) {
@ -317,8 +348,10 @@ static void snd_usbmidi_error_timer(unsigned long data)
struct snd_usb_midi_in_endpoint *in = umidi->endpoints[i].in;
if (in && in->error_resubmit) {
in->error_resubmit = 0;
in->urb->dev = umidi->chip->dev;
snd_usbmidi_submit_urb(in->urb, GFP_ATOMIC);
for (j = 0; j < INPUT_URBS; ++j) {
in->urbs[j]->dev = umidi->chip->dev;
snd_usbmidi_submit_urb(in->urbs[j], GFP_ATOMIC);
}
}
if (umidi->endpoints[i].out)
snd_usbmidi_do_output(umidi->endpoints[i].out);
@ -330,13 +363,14 @@ static void snd_usbmidi_error_timer(unsigned long data)
static int send_bulk_static_data(struct snd_usb_midi_out_endpoint* ep,
const void *data, int len)
{
int err;
int err = 0;
void *buf = kmemdup(data, len, GFP_KERNEL);
if (!buf)
return -ENOMEM;
dump_urb("sending", buf, len);
err = usb_bulk_msg(ep->umidi->chip->dev, ep->urb->pipe, buf, len,
NULL, 250);
if (ep->urbs[0].urb)
err = usb_bulk_msg(ep->umidi->chip->dev, ep->urbs[0].urb->pipe,
buf, len, NULL, 250);
kfree(buf);
return err;
}
@ -554,9 +588,9 @@ static void snd_usbmidi_transmit_byte(struct usbmidi_out_port* port,
}
}
static void snd_usbmidi_standard_output(struct snd_usb_midi_out_endpoint* ep)
static void snd_usbmidi_standard_output(struct snd_usb_midi_out_endpoint* ep,
struct urb *urb)
{
struct urb* urb = ep->urb;
int p;
/* FIXME: lower-numbered ports can starve higher-numbered ports */
@ -613,14 +647,15 @@ static void snd_usbmidi_novation_input(struct snd_usb_midi_in_endpoint* ep,
snd_usbmidi_input_data(ep, 0, &buffer[2], buffer[0] - 1);
}
static void snd_usbmidi_novation_output(struct snd_usb_midi_out_endpoint* ep)
static void snd_usbmidi_novation_output(struct snd_usb_midi_out_endpoint* ep,
struct urb *urb)
{
uint8_t* transfer_buffer;
int count;
if (!ep->ports[0].active)
return;
transfer_buffer = ep->urb->transfer_buffer;
transfer_buffer = urb->transfer_buffer;
count = snd_rawmidi_transmit(ep->ports[0].substream,
&transfer_buffer[2],
ep->max_transfer - 2);
@ -630,7 +665,7 @@ static void snd_usbmidi_novation_output(struct snd_usb_midi_out_endpoint* ep)
}
transfer_buffer[0] = 0;
transfer_buffer[1] = count;
ep->urb->transfer_buffer_length = 2 + count;
urb->transfer_buffer_length = 2 + count;
}
static struct usb_protocol_ops snd_usbmidi_novation_ops = {
@ -648,20 +683,21 @@ static void snd_usbmidi_raw_input(struct snd_usb_midi_in_endpoint* ep,
snd_usbmidi_input_data(ep, 0, buffer, buffer_length);
}
static void snd_usbmidi_raw_output(struct snd_usb_midi_out_endpoint* ep)
static void snd_usbmidi_raw_output(struct snd_usb_midi_out_endpoint* ep,
struct urb *urb)
{
int count;
if (!ep->ports[0].active)
return;
count = snd_rawmidi_transmit(ep->ports[0].substream,
ep->urb->transfer_buffer,
urb->transfer_buffer,
ep->max_transfer);
if (count < 1) {
ep->ports[0].active = 0;
return;
}
ep->urb->transfer_buffer_length = count;
urb->transfer_buffer_length = count;
}
static struct usb_protocol_ops snd_usbmidi_raw_ops = {
@ -681,23 +717,25 @@ static void snd_usbmidi_us122l_input(struct snd_usb_midi_in_endpoint *ep,
snd_usbmidi_input_data(ep, 0, buffer, buffer_length);
}
static void snd_usbmidi_us122l_output(struct snd_usb_midi_out_endpoint *ep)
static void snd_usbmidi_us122l_output(struct snd_usb_midi_out_endpoint *ep,
struct urb *urb)
{
int count;
if (!ep->ports[0].active)
return;
count = ep->urb->dev->speed == USB_SPEED_HIGH ? 1 : 2;
count = snd_usb_get_speed(ep->umidi->chip->dev) == USB_SPEED_HIGH
? 1 : 2;
count = snd_rawmidi_transmit(ep->ports[0].substream,
ep->urb->transfer_buffer,
urb->transfer_buffer,
count);
if (count < 1) {
ep->ports[0].active = 0;
return;
}
memset(ep->urb->transfer_buffer + count, 0xFD, 9 - count);
ep->urb->transfer_buffer_length = count;
memset(urb->transfer_buffer + count, 0xFD, 9 - count);
urb->transfer_buffer_length = count;
}
static struct usb_protocol_ops snd_usbmidi_122l_ops = {
@ -786,10 +824,11 @@ static void snd_usbmidi_emagic_input(struct snd_usb_midi_in_endpoint* ep,
}
}
static void snd_usbmidi_emagic_output(struct snd_usb_midi_out_endpoint* ep)
static void snd_usbmidi_emagic_output(struct snd_usb_midi_out_endpoint* ep,
struct urb *urb)
{
int port0 = ep->current_port;
uint8_t* buf = ep->urb->transfer_buffer;
uint8_t* buf = urb->transfer_buffer;
int buf_free = ep->max_transfer;
int length, i;
@ -829,7 +868,7 @@ static void snd_usbmidi_emagic_output(struct snd_usb_midi_out_endpoint* ep)
*buf = 0xff;
--buf_free;
}
ep->urb->transfer_buffer_length = ep->max_transfer - buf_free;
urb->transfer_buffer_length = ep->max_transfer - buf_free;
}
static struct usb_protocol_ops snd_usbmidi_emagic_ops = {
@ -884,6 +923,35 @@ static void snd_usbmidi_output_trigger(struct snd_rawmidi_substream *substream,
}
}
static void snd_usbmidi_output_drain(struct snd_rawmidi_substream *substream)
{
struct usbmidi_out_port* port = substream->runtime->private_data;
struct snd_usb_midi_out_endpoint *ep = port->ep;
unsigned int drain_urbs;
DEFINE_WAIT(wait);
long timeout = msecs_to_jiffies(50);
/*
* The substream buffer is empty, but some data might still be in the
* currently active URBs, so we have to wait for those to complete.
*/
spin_lock_irq(&ep->buffer_lock);
drain_urbs = ep->active_urbs;
if (drain_urbs) {
ep->drain_urbs |= drain_urbs;
do {
prepare_to_wait(&ep->drain_wait, &wait,
TASK_UNINTERRUPTIBLE);
spin_unlock_irq(&ep->buffer_lock);
timeout = schedule_timeout(timeout);
spin_lock_irq(&ep->buffer_lock);
drain_urbs &= ep->drain_urbs;
} while (drain_urbs && timeout);
finish_wait(&ep->drain_wait, &wait);
}
spin_unlock_irq(&ep->buffer_lock);
}
static int snd_usbmidi_input_open(struct snd_rawmidi_substream *substream)
{
return 0;
@ -908,6 +976,7 @@ static struct snd_rawmidi_ops snd_usbmidi_output_ops = {
.open = snd_usbmidi_output_open,
.close = snd_usbmidi_output_close,
.trigger = snd_usbmidi_output_trigger,
.drain = snd_usbmidi_output_drain,
};
static struct snd_rawmidi_ops snd_usbmidi_input_ops = {
@ -916,19 +985,26 @@ static struct snd_rawmidi_ops snd_usbmidi_input_ops = {
.trigger = snd_usbmidi_input_trigger
};
static void free_urb_and_buffer(struct snd_usb_midi *umidi, struct urb *urb,
unsigned int buffer_length)
{
usb_buffer_free(umidi->chip->dev, buffer_length,
urb->transfer_buffer, urb->transfer_dma);
usb_free_urb(urb);
}
/*
* Frees an input endpoint.
* May be called when ep hasn't been initialized completely.
*/
static void snd_usbmidi_in_endpoint_delete(struct snd_usb_midi_in_endpoint* ep)
{
if (ep->urb) {
usb_buffer_free(ep->umidi->chip->dev,
ep->urb->transfer_buffer_length,
ep->urb->transfer_buffer,
ep->urb->transfer_dma);
usb_free_urb(ep->urb);
}
unsigned int i;
for (i = 0; i < INPUT_URBS; ++i)
if (ep->urbs[i])
free_urb_and_buffer(ep->umidi, ep->urbs[i],
ep->urbs[i]->transfer_buffer_length);
kfree(ep);
}
@ -943,6 +1019,7 @@ static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi* umidi,
void* buffer;
unsigned int pipe;
int length;
unsigned int i;
rep->in = NULL;
ep = kzalloc(sizeof(*ep), GFP_KERNEL);
@ -950,30 +1027,36 @@ static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi* umidi,
return -ENOMEM;
ep->umidi = umidi;
ep->urb = usb_alloc_urb(0, GFP_KERNEL);
if (!ep->urb) {
snd_usbmidi_in_endpoint_delete(ep);
return -ENOMEM;
for (i = 0; i < INPUT_URBS; ++i) {
ep->urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
if (!ep->urbs[i]) {
snd_usbmidi_in_endpoint_delete(ep);
return -ENOMEM;
}
}
if (ep_info->in_interval)
pipe = usb_rcvintpipe(umidi->chip->dev, ep_info->in_ep);
else
pipe = usb_rcvbulkpipe(umidi->chip->dev, ep_info->in_ep);
length = usb_maxpacket(umidi->chip->dev, pipe, 0);
buffer = usb_buffer_alloc(umidi->chip->dev, length, GFP_KERNEL,
&ep->urb->transfer_dma);
if (!buffer) {
snd_usbmidi_in_endpoint_delete(ep);
return -ENOMEM;
for (i = 0; i < INPUT_URBS; ++i) {
buffer = usb_buffer_alloc(umidi->chip->dev, length, GFP_KERNEL,
&ep->urbs[i]->transfer_dma);
if (!buffer) {
snd_usbmidi_in_endpoint_delete(ep);
return -ENOMEM;
}
if (ep_info->in_interval)
usb_fill_int_urb(ep->urbs[i], umidi->chip->dev,
pipe, buffer, length,
snd_usbmidi_in_urb_complete,
ep, ep_info->in_interval);
else
usb_fill_bulk_urb(ep->urbs[i], umidi->chip->dev,
pipe, buffer, length,
snd_usbmidi_in_urb_complete, ep);
ep->urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
}
if (ep_info->in_interval)
usb_fill_int_urb(ep->urb, umidi->chip->dev, pipe, buffer,
length, snd_usbmidi_in_urb_complete, ep,
ep_info->in_interval);
else
usb_fill_bulk_urb(ep->urb, umidi->chip->dev, pipe, buffer,
length, snd_usbmidi_in_urb_complete, ep);
ep->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
rep->in = ep;
return 0;
@ -994,12 +1077,12 @@ static unsigned int snd_usbmidi_count_bits(unsigned int x)
*/
static void snd_usbmidi_out_endpoint_delete(struct snd_usb_midi_out_endpoint* ep)
{
if (ep->urb) {
usb_buffer_free(ep->umidi->chip->dev, ep->max_transfer,
ep->urb->transfer_buffer,
ep->urb->transfer_dma);
usb_free_urb(ep->urb);
}
unsigned int i;
for (i = 0; i < OUTPUT_URBS; ++i)
if (ep->urbs[i].urb)
free_urb_and_buffer(ep->umidi, ep->urbs[i].urb,
ep->max_transfer);
kfree(ep);
}
@ -1011,7 +1094,7 @@ static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi* umidi,
struct snd_usb_midi_endpoint* rep)
{
struct snd_usb_midi_out_endpoint* ep;
int i;
unsigned int i;
unsigned int pipe;
void* buffer;
@ -1021,38 +1104,46 @@ static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi* umidi,
return -ENOMEM;
ep->umidi = umidi;
ep->urb = usb_alloc_urb(0, GFP_KERNEL);
if (!ep->urb) {
snd_usbmidi_out_endpoint_delete(ep);
return -ENOMEM;
for (i = 0; i < OUTPUT_URBS; ++i) {
ep->urbs[i].urb = usb_alloc_urb(0, GFP_KERNEL);
if (!ep->urbs[i].urb) {
snd_usbmidi_out_endpoint_delete(ep);
return -ENOMEM;
}
ep->urbs[i].ep = ep;
}
if (ep_info->out_interval)
pipe = usb_sndintpipe(umidi->chip->dev, ep_info->out_ep);
else
pipe = usb_sndbulkpipe(umidi->chip->dev, ep_info->out_ep);
if (umidi->chip->usb_id == USB_ID(0x0a92, 0x1020)) /* ESI M4U */
/* FIXME: we need more URBs to get reasonable bandwidth here: */
ep->max_transfer = 4;
else
ep->max_transfer = usb_maxpacket(umidi->chip->dev, pipe, 1);
buffer = usb_buffer_alloc(umidi->chip->dev, ep->max_transfer,
GFP_KERNEL, &ep->urb->transfer_dma);
if (!buffer) {
snd_usbmidi_out_endpoint_delete(ep);
return -ENOMEM;
for (i = 0; i < OUTPUT_URBS; ++i) {
buffer = usb_buffer_alloc(umidi->chip->dev,
ep->max_transfer, GFP_KERNEL,
&ep->urbs[i].urb->transfer_dma);
if (!buffer) {
snd_usbmidi_out_endpoint_delete(ep);
return -ENOMEM;
}
if (ep_info->out_interval)
usb_fill_int_urb(ep->urbs[i].urb, umidi->chip->dev,
pipe, buffer, ep->max_transfer,
snd_usbmidi_out_urb_complete,
&ep->urbs[i], ep_info->out_interval);
else
usb_fill_bulk_urb(ep->urbs[i].urb, umidi->chip->dev,
pipe, buffer, ep->max_transfer,
snd_usbmidi_out_urb_complete,
&ep->urbs[i]);
ep->urbs[i].urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
}
if (ep_info->out_interval)
usb_fill_int_urb(ep->urb, umidi->chip->dev, pipe, buffer,
ep->max_transfer, snd_usbmidi_out_urb_complete,
ep, ep_info->out_interval);
else
usb_fill_bulk_urb(ep->urb, umidi->chip->dev,
pipe, buffer, ep->max_transfer,
snd_usbmidi_out_urb_complete, ep);
ep->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
spin_lock_init(&ep->buffer_lock);
tasklet_init(&ep->tasklet, snd_usbmidi_out_tasklet, (unsigned long)ep);
init_waitqueue_head(&ep->drain_wait);
for (i = 0; i < 0x10; ++i)
if (ep_info->out_cables & (1 << i)) {
@ -1090,7 +1181,7 @@ static void snd_usbmidi_free(struct snd_usb_midi* umidi)
void snd_usbmidi_disconnect(struct list_head* p)
{
struct snd_usb_midi* umidi;
int i;
unsigned int i, j;
umidi = list_entry(p, struct snd_usb_midi, list);
/*
@ -1105,13 +1196,15 @@ void snd_usbmidi_disconnect(struct list_head* p)
struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i];
if (ep->out)
tasklet_kill(&ep->out->tasklet);
if (ep->out && ep->out->urb) {
usb_kill_urb(ep->out->urb);
if (ep->out) {
for (j = 0; j < OUTPUT_URBS; ++j)
usb_kill_urb(ep->out->urbs[j].urb);
if (umidi->usb_protocol_ops->finish_out_endpoint)
umidi->usb_protocol_ops->finish_out_endpoint(ep->out);
}
if (ep->in)
usb_kill_urb(ep->in->urb);
for (j = 0; j < INPUT_URBS; ++j)
usb_kill_urb(ep->in->urbs[j]);
/* free endpoints here; later call can result in Oops */
if (ep->out) {
snd_usbmidi_out_endpoint_delete(ep->out);
@ -1692,20 +1785,25 @@ static int snd_usbmidi_create_rawmidi(struct snd_usb_midi* umidi,
void snd_usbmidi_input_stop(struct list_head* p)
{
struct snd_usb_midi* umidi;
int i;
unsigned int i, j;
umidi = list_entry(p, struct snd_usb_midi, list);
for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i];
if (ep->in)
usb_kill_urb(ep->in->urb);
for (j = 0; j < INPUT_URBS; ++j)
usb_kill_urb(ep->in->urbs[j]);
}
}
static void snd_usbmidi_input_start_ep(struct snd_usb_midi_in_endpoint* ep)
{
if (ep) {
struct urb* urb = ep->urb;
unsigned int i;
if (!ep)
return;
for (i = 0; i < INPUT_URBS; ++i) {
struct urb* urb = ep->urbs[i];
urb->dev = ep->umidi->chip->dev;
snd_usbmidi_submit_urb(urb, GFP_KERNEL);
}

60
sound/usb/usbmixer.c
View File

@ -86,6 +86,7 @@ struct usb_mixer_interface {
u8 rc_buffer[6];
u8 audigy2nx_leds[3];
u8 xonar_u1_status;
};
@ -2042,6 +2043,58 @@ static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
}
}
static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
ucontrol->value.integer.value[0] = !!(mixer->xonar_u1_status & 0x02);
return 0;
}
static int snd_xonar_u1_switch_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
u8 old_status, new_status;
int err, changed;
old_status = mixer->xonar_u1_status;
if (ucontrol->value.integer.value[0])
new_status = old_status | 0x02;
else
new_status = old_status & ~0x02;
changed = new_status != old_status;
err = snd_usb_ctl_msg(mixer->chip->dev,
usb_sndctrlpipe(mixer->chip->dev, 0), 0x08,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
50, 0, &new_status, 1, 100);
if (err < 0)
return err;
mixer->xonar_u1_status = new_status;
return changed;
}
static struct snd_kcontrol_new snd_xonar_u1_output_switch = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Digital Playback Switch",
.info = snd_ctl_boolean_mono_info,
.get = snd_xonar_u1_switch_get,
.put = snd_xonar_u1_switch_put,
};
static int snd_xonar_u1_controls_create(struct usb_mixer_interface *mixer)
{
int err;
err = snd_ctl_add(mixer->chip->card,
snd_ctl_new1(&snd_xonar_u1_output_switch, mixer));
if (err < 0)
return err;
mixer->xonar_u1_status = 0x05;
return 0;
}
int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
int ignore_error)
{
@ -2084,6 +2137,13 @@ int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
snd_audigy2nx_proc_read);
}
if (mixer->chip->usb_id == USB_ID(0x0b05, 0x1739) ||
mixer->chip->usb_id == USB_ID(0x0b05, 0x1743)) {
err = snd_xonar_u1_controls_create(mixer);
if (err < 0)
goto _error;
}
err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops);
if (err < 0)
goto _error;