/*
* US-428 AUDIO
* Copyright (c) 2002-2003 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)
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <sound/driver.h>
#include <linux/interrupt.h>
#include <linux/usb.h>
#include <sound/core.h>
#include <sound/info.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include "usx2y.h"
#include "usbusx2y.h"
struct snd_usX2Y_substream {
usX2Ydev_t *usX2Y;
snd_pcm_substream_t *pcm_substream;
unsigned char endpoint;
unsigned int datapipe; /* the data i/o pipe */
unsigned int maxpacksize; /* max packet size in bytes */
char prepared,
running,
stalled;
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 */
int next_urb_complete;
struct urb *completed_urb;
char *tmpbuf; /* temporary buffer for playback */
volatile int submitted_urbs;
wait_queue_head_t wait_queue;
};
static int usX2Y_urb_capt_retire(snd_usX2Y_substream_t *subs)
{
struct urb *urb = subs->completed_urb;
snd_pcm_runtime_t *runtime = subs->pcm_substream->runtime;
unsigned char *cp;
int i, len, lens = 0, hwptr_done = subs->hwptr_done;
usX2Ydev_t *usX2Y = subs->usX2Y;
for (i = 0; i < NRPACKS; 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_printdd("activ frame status %i\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_printk("0 == len ERROR!\n");
continue;
}
/* copy a data chunk */
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 {
memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp, len * usX2Y->stride);
}
lens += len;
if ((hwptr_done += len) >= 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(snd_usX2Y_substream_t *subs,
struct urb *cap_urb,
struct urb *urb)
{
int count, counts, pack;
usX2Ydev_t* usX2Y = subs->usX2Y;
snd_pcm_runtime_t *runtime = subs->pcm_substream->runtime;
count = 0;
for (pack = 0; pack < NRPACKS; 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("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 = counts * usX2Y->stride;
}
if (subs->hwptr + count > runtime->buffer_size) {
/* err, the transferred area goes over buffer boundary.
* 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 + 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;
if ((subs->hwptr += count) >= runtime->buffer_size)
subs->hwptr -= runtime->buffer_size;
}
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.
*/
inline static int usX2Y_urb_play_retire(snd_usX2Y_substream_t *subs, struct urb *urb)
{
snd_pcm_runtime_t *runtime = subs->pcm_substream->runtime;
int len = (urb->iso_frame_desc[0].actual_length
#if NRPACKS > 1
+ urb->iso_frame_desc[1].actual_length
#endif
) / 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);
}
return 0;
}
inline static int usX2Y_urb_submit(snd_usX2Y_substream_t *subs, struct urb *urb, int frame)
{
int err;
if (!urb)
return -ENODEV;
urb->start_frame = (frame + NRURBS*NRPACKS) & (1024 - 1);
urb->hcpriv = NULL;
urb->dev = subs->usX2Y->chip.dev; /* we need to set this at each time */
if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
snd_printk("%i\n", err);
return err;
} else {
subs->submitted_urbs++;
if (subs->next_urb_complete < 0)
subs->next_urb_complete = 0;
}
return 0;
}
static inline int frame_distance(int from, int to)
{
int distance = to - from;
if (distance < -512)
distance += 1024;
else
if (distance > 511)
distance -= 1024;
return distance;
}
static void usX2Y_subs_set_next_urb_complete(snd_usX2Y_substream_t *subs)
{
int next_urb_complete = subs->next_urb_complete + 1;
int distance;
if (next_urb_complete >= NRURBS)
next_urb_complete = 0;
distance = frame_distance(subs->completed_urb->start_frame,
subs->urb[next_urb_complete]->start_frame);
if (1 == distance) {
subs->next_urb_complete = next_urb_complete;
} else {
snd_printdd("distance %i not set_nuc %i %i %i \n", distance, subs->endpoint, next_urb_complete, subs->urb[next_urb_complete]->status);
subs->next_urb_complete = -1;
}
}
static inline void usX2Y_usbframe_complete(snd_usX2Y_substream_t *capsubs, snd_usX2Y_substream_t *playbacksubs, int frame)
{
{
struct urb *urb;
if ((urb = playbacksubs->completed_urb)) {
if (playbacksubs->prepared)
usX2Y_urb_play_retire(playbacksubs, urb);
usX2Y_subs_set_next_urb_complete(playbacksubs);
}
if (playbacksubs->running) {
if (NULL == urb)
urb = playbacksubs->urb[playbacksubs->next_urb_complete + 1];
if (urb && 0 == usX2Y_urb_play_prepare(playbacksubs,
capsubs->completed_urb,
urb)) {
if (usX2Y_urb_submit(playbacksubs, urb, frame) < 0)
return;
} else
snd_pcm_stop(playbacksubs->pcm_substream, SNDRV_PCM_STATE_XRUN);
}
playbacksubs->completed_urb = NULL;
}
if (capsubs->running)
usX2Y_urb_capt_retire(capsubs);
usX2Y_subs_set_next_urb_complete(capsubs);
if (capsubs->prepared)
usX2Y_urb_submit(capsubs, capsubs->completed_urb, frame);
capsubs->completed_urb = NULL;
}
static void usX2Y_clients_stop(snd_usX2Y_substream_t *subs)
{
usX2Ydev_t *usX2Y = subs->usX2Y;
int i;
for (i = 0; i < 4; i++) {
snd_usX2Y_substream_t *substream = usX2Y->substream[i];
if (substream && substream->running)
snd_pcm_stop(substream->pcm_substream, SNDRV_PCM_STATE_XRUN);
}
}
static void i_usX2Y_urb_complete(struct urb *urb, struct pt_regs *regs)
{
snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t*)urb->context;
subs->submitted_urbs--;
if (urb->status) {
snd_printk("ep=%i stalled with status=%i\n", subs->endpoint, urb->status);
subs->stalled = 1;
usX2Y_clients_stop(subs);
urb->status = 0;
return;
}
if (urb == subs->urb[subs->next_urb_complete]) {
subs->completed_urb = urb;
} else {
snd_printk("Sequence Error!(ep=%i;nuc=%i,frame=%i)\n",
subs->endpoint, subs->next_urb_complete, urb->start_frame);
subs->stalled = 1;
usX2Y_clients_stop(subs);
return;
}
if (waitqueue_active(&subs->wait_queue))
wake_up(&subs->wait_queue);
{
snd_usX2Y_substream_t *capsubs = subs->usX2Y->substream[SNDRV_PCM_STREAM_CAPTURE],
*playbacksubs = subs->usX2Y->substream[SNDRV_PCM_STREAM_PLAYBACK];
if (capsubs->completed_urb &&
(playbacksubs->completed_urb ||
!playbacksubs->prepared ||
(playbacksubs->prepared && (playbacksubs->next_urb_complete < 0 || // not started yet
frame_distance(capsubs->completed_urb->start_frame,
playbacksubs->urb[playbacksubs->next_urb_complete]->start_frame)
> 0 || // other expected later
playbacksubs->stalled))))
usX2Y_usbframe_complete(capsubs, playbacksubs, urb->start_frame);
}
}
static int usX2Y_urbs_capt_start(snd_usX2Y_substream_t *subs)
{
int i, err;
for (i = 0; i < NRURBS; i++) {
unsigned long pack;
struct urb *urb = subs->urb[i];
urb->dev = subs->usX2Y->chip.dev;
urb->transfer_flags = URB_ISO_ASAP;
for (pack = 0; pack < NRPACKS; pack++) {
urb->iso_frame_desc[pack].offset = subs->maxpacksize * pack;
urb->iso_frame_desc[pack].length = subs->maxpacksize;
}
urb->transfer_buffer_length = subs->maxpacksize * NRPACKS;
if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
snd_printk (KERN_ERR "cannot submit datapipe for urb %d, err = %d\n", i, err);
return -EPIPE;
} else {
subs->submitted_urbs++;
}
urb->transfer_flags = 0;
}
subs->stalled = 0;
subs->next_urb_complete = 0;
subs->prepared = 1;
return 0;
}
/*
* wait until all urbs are processed.
*/
static int usX2Y_urbs_wait_clear(snd_usX2Y_substream_t *subs)
{
int timeout = HZ;
do {
if (0 == subs->submitted_urbs)
break;
set_current_state(TASK_UNINTERRUPTIBLE);
snd_printdd("snd_usX2Y_urbs_wait_clear waiting\n");
schedule_timeout(1);
} while (--timeout > 0);
if (subs->submitted_urbs)
snd_printk(KERN_ERR "timeout: still %d active urbs..\n", subs->submitted_urbs);
return 0;
}
/*
* return the current pcm pointer. just return the hwptr_done value.
*/
static snd_pcm_uframes_t snd_usX2Y_pcm_pointer(snd_pcm_substream_t *substream)
{
snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)substream->runtime->private_data;
return subs->hwptr_done;
}
/*
* start/stop substream
*/
static int snd_usX2Y_pcm_trigger(snd_pcm_substream_t *substream, int cmd)
{
snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)substream->runtime->private_data;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
snd_printdd("snd_usX2Y_pcm_trigger(START)\n");
if (subs->usX2Y->substream[SNDRV_PCM_STREAM_CAPTURE]->stalled)
return -EPIPE;
else
subs->running = 1;
break;
case SNDRV_PCM_TRIGGER_STOP:
snd_printdd("snd_usX2Y_pcm_trigger(STOP)\n");
subs->running = 0;
break;
default:
return -EINVAL;
}
return 0;
}
static void usX2Y_urb_release(struct urb** urb, int free_tb)
{
if (*urb) {
if (free_tb)
kfree((*urb)->transfer_buffer);
usb_free_urb(*urb);
*urb = NULL;
}
}
/*
* release a substream
*/
static void usX2Y_urbs_release(snd_usX2Y_substream_t *subs)
{
int i;
snd_printdd("snd_usX2Y_urbs_release() %i\n", subs->endpoint);
usX2Y_urbs_wait_clear(subs);
for (i = 0; i < NRURBS; i++)
usX2Y_urb_release(subs->urb + i, subs != subs->usX2Y->substream[SNDRV_PCM_STREAM_PLAYBACK]);
if (subs->tmpbuf) {
kfree(subs->tmpbuf);
subs->tmpbuf = NULL;
}
}
static void usX2Y_substream_prepare(snd_usX2Y_substream_t *subs)
{
snd_printdd("usX2Y_substream_prepare() ep=%i urb0=%p urb1=%p\n", subs->endpoint, subs->urb[0], subs->urb[1]);
/* reset the pointer */
subs->hwptr = 0;
subs->hwptr_done = 0;
subs->transfer_done = 0;
}
/*
* initialize a substream's urbs
*/
static int usX2Y_urbs_allocate(snd_usX2Y_substream_t *subs)
{
int i;
int is_playback = subs == subs->usX2Y->substream[SNDRV_PCM_STREAM_PLAYBACK];
struct usb_device *dev = subs->usX2Y->chip.dev;
snd_assert(!subs->prepared, return 0);
if (is_playback) { /* allocate a temporary buffer for playback */
subs->datapipe = usb_sndisocpipe(dev, subs->endpoint);
subs->maxpacksize = dev->epmaxpacketout[subs->endpoint];
if (NULL == subs->tmpbuf) {
subs->tmpbuf = kcalloc(NRPACKS, subs->maxpacksize, GFP_KERNEL);
if (NULL == subs->tmpbuf) {
snd_printk(KERN_ERR "cannot malloc tmpbuf\n");
return -ENOMEM;
}
}
} else {
subs->datapipe = usb_rcvisocpipe(dev, subs->endpoint);
subs->maxpacksize = dev->epmaxpacketin[subs->endpoint];
}
/* allocate and initialize data urbs */
for (i = 0; i < NRURBS; i++) {
struct urb** purb = subs->urb + i;
if (*purb)
continue;
*purb = usb_alloc_urb(NRPACKS, GFP_KERNEL);
if (NULL == *purb) {
usX2Y_urbs_release(subs);
return -ENOMEM;
}
if (!is_playback && !(*purb)->transfer_buffer) {
/* allocate a capture buffer per urb */
(*purb)->transfer_buffer = kmalloc(subs->maxpacksize*NRPACKS, GFP_KERNEL);
if (NULL == (*purb)->transfer_buffer) {
usX2Y_urbs_release(subs);
return -ENOMEM;
}
}
(*purb)->dev = dev;
(*purb)->pipe = subs->datapipe;
(*purb)->number_of_packets = NRPACKS;
(*purb)->context = subs;
(*purb)->interval = 1;
(*purb)->complete = snd_usb_complete_callback(i_usX2Y_urb_complete);
}
return 0;
}
static void i_usX2Y_04Int(struct urb* urb, struct pt_regs *regs)
{
usX2Ydev_t* usX2Y = urb->context;
if (urb->status) {
snd_printk("snd_usX2Y_04Int() urb->status=%i\n", urb->status);
return;
}
if (0 == --usX2Y->US04->len)
wake_up(&usX2Y->In04WaitQueue);
}
/*
* 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.
*/
static struct s_c2
{
char c1, c2;
}
SetRate44100[] =
{
{ 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 struct s_c2 SetRate48000[] =
{
{ 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(SetRate48000)
static int usX2Y_rate_set(usX2Ydev_t *usX2Y, int rate)
{
int err = 0, i;
snd_usX2Y_urbSeq_t *us = NULL;
int *usbdata = NULL;
DECLARE_WAITQUEUE(wait, current);
struct s_c2 *ra = rate == 48000 ? SetRate48000 : SetRate44100;
if (usX2Y->rate != rate) {
do {
us = kmalloc(sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS, GFP_KERNEL);
if (NULL == us) {
err = -ENOMEM;
break;
}
memset(us, 0, sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS);
usbdata = kmalloc(sizeof(int)*NOOF_SETRATE_URBS, GFP_KERNEL);
if (NULL == usbdata) {
err = -ENOMEM;
break;
}
for (i = 0; i < NOOF_SETRATE_URBS; ++i) {
if (NULL == (us->urb[i] = usb_alloc_urb(0, GFP_KERNEL))) {
err = -ENOMEM;
break;
}
((char*)(usbdata + i))[0] = ra[i].c1;
((char*)(usbdata + i))[1] = ra[i].c2;
usb_fill_bulk_urb(us->urb[i], usX2Y->chip.dev, usb_sndbulkpipe(usX2Y->chip.dev, 4),
usbdata + i, 2, i_usX2Y_04Int, usX2Y);
#ifdef OLD_USB
us->urb[i]->transfer_flags = USB_QUEUE_BULK;
#endif
}
if (err)
break;
add_wait_queue(&usX2Y->In04WaitQueue, &wait);
set_current_state(TASK_INTERRUPTIBLE);
us->submitted = 0;
us->len = NOOF_SETRATE_URBS;
usX2Y->US04 = us;
do {
signed long timeout = schedule_timeout(HZ/2);
if (signal_pending(current)) {
err = -ERESTARTSYS;
break;
}
if (0 == timeout) {
err = -ENODEV;
break;
}
usX2Y->rate = rate;
usX2Y->refframes = rate == 48000 ? 47 : 44;
} while (0);
remove_wait_queue(&usX2Y->In04WaitQueue, &wait);
} while (0);
if (us) {
us->submitted = 2*NOOF_SETRATE_URBS;
for (i = 0; i < NOOF_SETRATE_URBS; ++i) {
usb_kill_urb(us->urb[i]);
usb_free_urb(us->urb[i]);
}
usX2Y->US04 = NULL;
kfree(usbdata);
kfree(us);
}
}
return err;
}
static int usX2Y_format_set(usX2Ydev_t *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->chip.midi_list) {
snd_usbmidi_input_stop(p);
}
usb_kill_urb(usX2Y->In04urb);
if ((err = usb_set_interface(usX2Y->chip.dev, 0, alternate))) {
snd_printk("usb_set_interface error \n");
return err;
}
usX2Y->In04urb->dev = usX2Y->chip.dev;
err = usb_submit_urb(usX2Y->In04urb, GFP_KERNEL);
list_for_each(p, &usX2Y->chip.midi_list) {
snd_usbmidi_input_start(p);
}
usX2Y->format = format;
usX2Y->rate = 0;
return err;
}
static int snd_usX2Y_pcm_hw_params(snd_pcm_substream_t *substream,
snd_pcm_hw_params_t *hw_params)
{
int err = 0;
unsigned int rate = params_rate(hw_params);
snd_pcm_format_t format = params_format(hw_params);
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
snd_card_t *card = substream->pstr->pcm->card;
struct list_head *list;
list_for_each(list, &card->devices) {
snd_device_t *dev;
snd_pcm_t *pcm;
int s;
dev = snd_device(list);
if (dev->type != SNDRV_DEV_PCM)
continue;
pcm = dev->device_data;
for (s = 0; s < 2; ++s) {
snd_pcm_substream_t *test_substream;
test_substream = pcm->streams[s].substream;
if (test_substream && test_substream != substream &&
test_substream->runtime &&
((test_substream->runtime->format &&
test_substream->runtime->format != format) ||
(test_substream->runtime->rate &&
test_substream->runtime->rate != rate)))
return -EINVAL;
}
}
}
if (0 > (err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)))) {
snd_printk("snd_pcm_lib_malloc_pages(%p, %i) returned %i\n", substream, params_buffer_bytes(hw_params), err);
return err;
}
return 0;
}
/*
* free the buffer
*/
static int snd_usX2Y_pcm_hw_free(snd_pcm_substream_t *substream)
{
snd_pcm_runtime_t *runtime = substream->runtime;
snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data;
snd_printdd("snd_usX2Y_hw_free(%p)\n", substream);
if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
snd_usX2Y_substream_t *cap_subs = subs->usX2Y->substream[SNDRV_PCM_STREAM_CAPTURE];
subs->prepared = 0;
usX2Y_urbs_release(subs);
if (!cap_subs->pcm_substream ||
!cap_subs->pcm_substream->runtime ||
!cap_subs->pcm_substream->runtime->status ||
cap_subs->pcm_substream->runtime->status->state < SNDRV_PCM_STATE_PREPARED) {
cap_subs->prepared = 0;
usX2Y_urbs_release(cap_subs);
}
} else {
snd_usX2Y_substream_t *playback_subs = subs->usX2Y->substream[SNDRV_PCM_STREAM_PLAYBACK];
if (!playback_subs->prepared) {
subs->prepared = 0;
usX2Y_urbs_release(subs);
}
}
return snd_pcm_lib_free_pages(substream);
}
/*
* prepare callback
*
* set format and initialize urbs
*/
static int snd_usX2Y_pcm_prepare(snd_pcm_substream_t *substream)
{
snd_pcm_runtime_t *runtime = substream->runtime;
snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data;
snd_usX2Y_substream_t *capsubs = subs->usX2Y->substream[SNDRV_PCM_STREAM_CAPTURE];
int err = 0;
snd_printdd("snd_usX2Y_pcm_prepare(%p)\n", substream);
// Start hardware streams
// SyncStream first....
if (! capsubs->prepared) {
if (subs->usX2Y->format != runtime->format)
if ((err = usX2Y_format_set(subs->usX2Y, runtime->format)) < 0)
return err;
if (subs->usX2Y->rate != runtime->rate)
if ((err = usX2Y_rate_set(subs->usX2Y, runtime->rate)) < 0)
return err;
snd_printdd("starting capture pipe for playpipe\n");
usX2Y_urbs_allocate(capsubs);
capsubs->completed_urb = NULL;
{
DECLARE_WAITQUEUE(wait, current);
add_wait_queue(&capsubs->wait_queue, &wait);
if (0 <= (err = usX2Y_urbs_capt_start(capsubs))) {
signed long timeout;
set_current_state(TASK_INTERRUPTIBLE);
timeout = schedule_timeout(HZ/4);
if (signal_pending(current))
err = -ERESTARTSYS;
else {
snd_printdd("%li\n", HZ/4 - timeout);
if (0 == timeout)
err = -EPIPE;
}
}
remove_wait_queue(&capsubs->wait_queue, &wait);
if (0 > err)
return err;
}
}
if (subs != capsubs) {
int u;
if (!subs->prepared) {
if ((err = usX2Y_urbs_allocate(subs)) < 0)
return err;
subs->prepared = 1;
}
while (subs->submitted_urbs)
for (u = 0; u < NRURBS; u++) {
snd_printdd("%i\n", subs->urb[u]->status);
while(subs->urb[u]->status || NULL != subs->urb[u]->hcpriv) {
signed long timeout;
snd_printdd("ep=%i waiting for urb=%p status=%i hcpriv=%p\n",
subs->endpoint, subs->urb[u],
subs->urb[u]->status, subs->urb[u]->hcpriv);
set_current_state(TASK_INTERRUPTIBLE);
timeout = schedule_timeout(HZ/10);
if (signal_pending(current)) {
return -ERESTARTSYS;
}
}
}
subs->completed_urb = NULL;
subs->next_urb_complete = -1;
subs->stalled = 0;
}
usX2Y_substream_prepare(subs);
return err;
}
static snd_pcm_hardware_t snd_usX2Y_2c =
{
.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 = 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(snd_pcm_substream_t *substream)
{
snd_usX2Y_substream_t *subs = ((snd_usX2Y_substream_t **)
snd_pcm_substream_chip(substream))[substream->stream];
snd_pcm_runtime_t *runtime = substream->runtime;
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(snd_pcm_substream_t *substream)
{
snd_pcm_runtime_t *runtime = substream->runtime;
snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data;
int err = 0;
subs->pcm_substream = NULL;
return err;
}
static snd_pcm_ops_t snd_usX2Y_pcm_ops =
{
.open = snd_usX2Y_pcm_open,
.close = snd_usX2Y_pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.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(snd_usX2Y_substream_t **usX2Y_substream)
{
if (NULL != usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]) {
kfree(usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]);
usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK] = NULL;
}
kfree(usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]);
usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE] = NULL;
}
static void snd_usX2Y_pcm_private_free(snd_pcm_t *pcm)
{
snd_usX2Y_substream_t **usX2Y_stream = pcm->private_data;
if (usX2Y_stream) {
snd_pcm_lib_preallocate_free_for_all(pcm);
usX2Y_audio_stream_free(usX2Y_stream);
}
}
static int usX2Y_audio_stream_new(snd_card_t *card, int playback_endpoint, int capture_endpoint)
{
snd_pcm_t *pcm;
int err, i;
snd_usX2Y_substream_t **usX2Y_substream =
usX2Y(card)->substream + 2 * usX2Y(card)->chip.pcm_devs;
for (i = playback_endpoint ? SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE;
i <= SNDRV_PCM_STREAM_CAPTURE; ++i) {
usX2Y_substream[i] = kcalloc(1, sizeof(snd_usX2Y_substream_t), GFP_KERNEL);
if (NULL == usX2Y_substream[i]) {
snd_printk(KERN_ERR "cannot malloc\n");
return -ENOMEM;
}
init_waitqueue_head(&usX2Y_substream[i]->wait_queue);
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)->chip.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)->chip.pcm_devs);
if ((playback_endpoint &&
0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
64*1024, 128*1024))) ||
0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
64*1024, 128*1024))) {
snd_usX2Y_pcm_private_free(pcm);
return err;
}
usX2Y(card)->chip.pcm_devs++;
return 0;
}
/*
* free the chip instance
*
* here we have to do not much, since pcm and controls are already freed
*
*/
static int snd_usX2Y_device_dev_free(snd_device_t *device)
{
return 0;
}
/*
* create a chip instance and set its names.
*/
int usX2Y_audio_create(snd_card_t* card)
{
int err = 0;
static snd_device_ops_t ops = {
.dev_free = snd_usX2Y_device_dev_free,
};
INIT_LIST_HEAD(&usX2Y(card)->chip.pcm_list);
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, usX2Y(card), &ops)) < 0) {
// snd_usX2Y_audio_free(usX2Y(card));
return err;
}
if (0 > (err = usX2Y_audio_stream_new(card, 0xA, 0x8)))
return err;
if (usX2Y(card)->chip.dev->descriptor.idProduct == USB_ID_US428)
if (0 > (err = usX2Y_audio_stream_new(card, 0, 0xA)))
return err;
if (usX2Y(card)->chip.dev->descriptor.idProduct != USB_ID_US122)
err = usX2Y_rate_set(usX2Y(card), 44100); // Lets us428 recognize output-volume settings, disturbs us122.
return err;
}
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