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raspberrypi-kernel
提交 5e0ddd07 编写于 作者: T Takashi Iwai
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Merge branch 'topic/line6' into for-next

上级 1001fb81 247d95ee
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sound/usb/line6/Kconfig
浏览文件 @ 5e0ddd07
......@@ -29,6 +29,8 @@ config SND_USB_PODHD
config SND_USB_TONEPORT
tristate "TonePort GX, UX1 and UX2 USB support"
select SND_USB_LINE6
select NEW_LEDS
select LEDS_CLASS
help
This is a driver for TonePort GX, UX1 and UX2 devices.
......
sound/usb/line6/capture.c
浏览文件 @ 5e0ddd07
......@@ -20,26 +20,24 @@
/*
Find a free URB and submit it.
must be called in line6pcm->in.lock context
*/
static int submit_audio_in_urb(struct snd_line6_pcm *line6pcm)
{
int index;
unsigned long flags;
int i, urb_size;
int ret;
struct urb *urb_in;
spin_lock_irqsave(&line6pcm->lock_audio_in, flags);
index =
find_first_zero_bit(&line6pcm->active_urb_in, LINE6_ISO_BUFFERS);
find_first_zero_bit(&line6pcm->in.active_urbs, LINE6_ISO_BUFFERS);
if (index < 0 || index >= LINE6_ISO_BUFFERS) {
spin_unlock_irqrestore(&line6pcm->lock_audio_in, flags);
dev_err(line6pcm->line6->ifcdev, "no free URB found\n");
return -EINVAL;
}
urb_in = line6pcm->urb_audio_in[index];
urb_in = line6pcm->in.urbs[index];
urb_size = 0;
for (i = 0; i < LINE6_ISO_PACKETS; ++i) {
......@@ -51,7 +49,7 @@ static int submit_audio_in_urb(struct snd_line6_pcm *line6pcm)
}
urb_in->transfer_buffer =
line6pcm->buffer_in +
line6pcm->in.buffer +
index * LINE6_ISO_PACKETS * line6pcm->max_packet_size;
urb_in->transfer_buffer_length = urb_size;
urb_in->context = line6pcm;
......@@ -59,81 +57,29 @@ static int submit_audio_in_urb(struct snd_line6_pcm *line6pcm)
ret = usb_submit_urb(urb_in, GFP_ATOMIC);
if (ret == 0)
set_bit(index, &line6pcm->active_urb_in);
set_bit(index, &line6pcm->in.active_urbs);
else
dev_err(line6pcm->line6->ifcdev,
"URB in #%d submission failed (%d)\n", index, ret);
spin_unlock_irqrestore(&line6pcm->lock_audio_in, flags);
return 0;
}
/*
Submit all currently available capture URBs.
must be called in line6pcm->in.lock context
*/
int line6_submit_audio_in_all_urbs(struct snd_line6_pcm *line6pcm)
{
int ret, i;
int ret = 0, i;
for (i = 0; i < LINE6_ISO_BUFFERS; ++i) {
ret = submit_audio_in_urb(line6pcm);
if (ret < 0)
return ret;
}
return 0;
}
/*
Unlink all currently active capture URBs.
*/
void line6_unlink_audio_in_urbs(struct snd_line6_pcm *line6pcm)
{
unsigned int i;
for (i = LINE6_ISO_BUFFERS; i--;) {
if (test_bit(i, &line6pcm->active_urb_in)) {
if (!test_and_set_bit(i, &line6pcm->unlink_urb_in)) {
struct urb *u = line6pcm->urb_audio_in[i];
usb_unlink_urb(u);
}
}
}
}
/*
Wait until unlinking of all currently active capture URBs has been
finished.
*/
void line6_wait_clear_audio_in_urbs(struct snd_line6_pcm *line6pcm)
{
int timeout = HZ;
unsigned int i;
int alive;
do {
alive = 0;
for (i = LINE6_ISO_BUFFERS; i--;) {
if (test_bit(i, &line6pcm->active_urb_in))
alive++;
}
if (!alive)
break;
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
} while (--timeout > 0);
if (alive)
snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive);
}
}
/*
Unlink all currently active capture URBs, and wait for finishing.
*/
void line6_unlink_wait_clear_audio_in_urbs(struct snd_line6_pcm *line6pcm)
{
line6_unlink_audio_in_urbs(line6pcm);
line6_wait_clear_audio_in_urbs(line6pcm);
return ret;
}
/*
......@@ -150,18 +96,18 @@ void line6_capture_copy(struct snd_line6_pcm *line6pcm, char *fbuf, int fsize)
if (runtime == NULL)
return;
if (line6pcm->pos_in_done + frames > runtime->buffer_size) {
if (line6pcm->in.pos_done + frames > runtime->buffer_size) {
/*
The transferred area goes over buffer boundary,
copy two separate chunks.
*/
int len;
len = runtime->buffer_size - line6pcm->pos_in_done;
len = runtime->buffer_size - line6pcm->in.pos_done;
if (len > 0) {
memcpy(runtime->dma_area +
line6pcm->pos_in_done * bytes_per_frame, fbuf,
line6pcm->in.pos_done * bytes_per_frame, fbuf,
len * bytes_per_frame);
memcpy(runtime->dma_area, fbuf + len * bytes_per_frame,
(frames - len) * bytes_per_frame);
......@@ -173,12 +119,12 @@ void line6_capture_copy(struct snd_line6_pcm *line6pcm, char *fbuf, int fsize)
} else {
/* copy single chunk */
memcpy(runtime->dma_area +
line6pcm->pos_in_done * bytes_per_frame, fbuf, fsize);
line6pcm->in.pos_done * bytes_per_frame, fbuf, fsize);
}
line6pcm->pos_in_done += frames;
if (line6pcm->pos_in_done >= runtime->buffer_size)
line6pcm->pos_in_done -= runtime->buffer_size;
line6pcm->in.pos_done += frames;
if (line6pcm->in.pos_done >= runtime->buffer_size)
line6pcm->in.pos_done -= runtime->buffer_size;
}
void line6_capture_check_period(struct snd_line6_pcm *line6pcm, int length)
......@@ -186,19 +132,15 @@ void line6_capture_check_period(struct snd_line6_pcm *line6pcm, int length)
struct snd_pcm_substream *substream =
get_substream(line6pcm, SNDRV_PCM_STREAM_CAPTURE);
line6pcm->bytes_in += length;
if (line6pcm->bytes_in >= line6pcm->period_in) {
line6pcm->bytes_in %= line6pcm->period_in;
line6pcm->in.bytes += length;
if (line6pcm->in.bytes >= line6pcm->in.period) {
line6pcm->in.bytes %= line6pcm->in.period;
spin_unlock(&line6pcm->in.lock);
snd_pcm_period_elapsed(substream);
spin_lock(&line6pcm->in.lock);
}
}
void line6_free_capture_buffer(struct snd_line6_pcm *line6pcm)
{
kfree(line6pcm->buffer_in);
line6pcm->buffer_in = NULL;
}
/*
* Callback for completed capture URB.
*/
......@@ -209,14 +151,14 @@ static void audio_in_callback(struct urb *urb)
struct snd_line6_pcm *line6pcm = (struct snd_line6_pcm *)urb->context;
line6pcm->last_frame_in = urb->start_frame;
line6pcm->in.last_frame = urb->start_frame;
/* find index of URB */
for (index = 0; index < LINE6_ISO_BUFFERS; ++index)
if (urb == line6pcm->urb_audio_in[index])
if (urb == line6pcm->in.urbs[index])
break;
spin_lock_irqsave(&line6pcm->lock_audio_in, flags);
spin_lock_irqsave(&line6pcm->in.lock, flags);
for (i = 0; i < LINE6_ISO_PACKETS; ++i) {
char *fbuf;
......@@ -243,27 +185,26 @@ static void audio_in_callback(struct urb *urb)
line6pcm->prev_fbuf = fbuf;
line6pcm->prev_fsize = fsize;
if (!(line6pcm->flags & LINE6_BITS_PCM_IMPULSE))
if (test_bit(LINE6_INDEX_PCM_ALSA_CAPTURE_STREAM,
&line6pcm->flags) && (fsize > 0))
line6_capture_copy(line6pcm, fbuf, fsize);
if (!test_bit(LINE6_STREAM_IMPULSE, &line6pcm->in.running) &&
test_bit(LINE6_STREAM_PCM, &line6pcm->in.running) &&
fsize > 0)
line6_capture_copy(line6pcm, fbuf, fsize);
}
clear_bit(index, &line6pcm->active_urb_in);
clear_bit(index, &line6pcm->in.active_urbs);
if (test_and_clear_bit(index, &line6pcm->unlink_urb_in))
if (test_and_clear_bit(index, &line6pcm->in.unlink_urbs))
shutdown = 1;
spin_unlock_irqrestore(&line6pcm->lock_audio_in, flags);
if (!shutdown) {
submit_audio_in_urb(line6pcm);
if (!(line6pcm->flags & LINE6_BITS_PCM_IMPULSE))
if (test_bit(LINE6_INDEX_PCM_ALSA_CAPTURE_STREAM,
&line6pcm->flags))
line6_capture_check_period(line6pcm, length);
if (!test_bit(LINE6_STREAM_IMPULSE, &line6pcm->in.running) &&
test_bit(LINE6_STREAM_PCM, &line6pcm->in.running))
line6_capture_check_period(line6pcm, length);
}
spin_unlock_irqrestore(&line6pcm->in.lock, flags);
}
/* open capture callback */
......@@ -290,102 +231,16 @@ static int snd_line6_capture_close(struct snd_pcm_substream *substream)
return 0;
}
/* hw_params capture callback */
static int snd_line6_capture_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
int ret;
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
/* -- Florian Demski [FD] */
/* don't ask me why, but this fixes the bug on my machine */
if (line6pcm == NULL) {
if (substream->pcm == NULL)
return -ENOMEM;
if (substream->pcm->private_data == NULL)
return -ENOMEM;
substream->private_data = substream->pcm->private_data;
line6pcm = snd_pcm_substream_chip(substream);
}
/* -- [FD] end */
ret = line6_pcm_acquire(line6pcm, LINE6_BIT_PCM_ALSA_CAPTURE_BUFFER);
if (ret < 0)
return ret;
ret = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params));
if (ret < 0) {
line6_pcm_release(line6pcm, LINE6_BIT_PCM_ALSA_CAPTURE_BUFFER);
return ret;
}
line6pcm->period_in = params_period_bytes(hw_params);
return 0;
}
/* hw_free capture callback */
static int snd_line6_capture_hw_free(struct snd_pcm_substream *substream)
{
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
line6_pcm_release(line6pcm, LINE6_BIT_PCM_ALSA_CAPTURE_BUFFER);
return snd_pcm_lib_free_pages(substream);
}
/* trigger callback */
int snd_line6_capture_trigger(struct snd_line6_pcm *line6pcm, int cmd)
{
int err;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
err = line6_pcm_acquire(line6pcm,
LINE6_BIT_PCM_ALSA_CAPTURE_STREAM);
if (err < 0)
return err;
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
err = line6_pcm_release(line6pcm,
LINE6_BIT_PCM_ALSA_CAPTURE_STREAM);
if (err < 0)
return err;
break;
default:
return -EINVAL;
}
return 0;
}
/* capture pointer callback */
static snd_pcm_uframes_t
snd_line6_capture_pointer(struct snd_pcm_substream *substream)
{
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
return line6pcm->pos_in_done;
}
/* capture operators */
struct snd_pcm_ops snd_line6_capture_ops = {
.open = snd_line6_capture_open,
.close = snd_line6_capture_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_line6_capture_hw_params,
.hw_free = snd_line6_capture_hw_free,
.hw_params = snd_line6_hw_params,
.hw_free = snd_line6_hw_free,
.prepare = snd_line6_prepare,
.trigger = snd_line6_trigger,
.pointer = snd_line6_capture_pointer,
.pointer = snd_line6_pointer,
};
int line6_create_audio_in_urbs(struct snd_line6_pcm *line6pcm)
......@@ -398,7 +253,7 @@ int line6_create_audio_in_urbs(struct snd_line6_pcm *line6pcm)
struct urb *urb;
/* URB for audio in: */
urb = line6pcm->urb_audio_in[i] =
urb = line6pcm->in.urbs[i] =
usb_alloc_urb(LINE6_ISO_PACKETS, GFP_KERNEL);
if (urb == NULL)
......
sound/usb/line6/capture.h
浏览文件 @ 5e0ddd07
......@@ -24,12 +24,6 @@ extern void line6_capture_copy(struct snd_line6_pcm *line6pcm, char *fbuf,
extern void line6_capture_check_period(struct snd_line6_pcm *line6pcm,
int length);
extern int line6_create_audio_in_urbs(struct snd_line6_pcm *line6pcm);
extern void line6_free_capture_buffer(struct snd_line6_pcm *line6pcm);
extern int line6_submit_audio_in_all_urbs(struct snd_line6_pcm *line6pcm);
extern void line6_unlink_audio_in_urbs(struct snd_line6_pcm *line6pcm);
extern void line6_unlink_wait_clear_audio_in_urbs(struct snd_line6_pcm
*line6pcm);
extern void line6_wait_clear_audio_in_urbs(struct snd_line6_pcm *line6pcm);
extern int snd_line6_capture_trigger(struct snd_line6_pcm *line6pcm, int cmd);
#endif
sound/usb/line6/driver.c
浏览文件 @ 5e0ddd07
......@@ -412,27 +412,13 @@ int line6_read_serial_number(struct usb_line6 *line6, int *serial_number)
}
EXPORT_SYMBOL_GPL(line6_read_serial_number);
/*
No operation (i.e., unsupported).
*/
ssize_t line6_nop_read(struct device *dev, struct device_attribute *attr,
char *buf)
{
return 0;
}
EXPORT_SYMBOL_GPL(line6_nop_read);
/*
Card destructor.
*/
static void line6_destruct(struct snd_card *card)
{
struct usb_line6 *line6 = card->private_data;
struct usb_device *usbdev;
if (!line6)
return;
usbdev = line6->usbdev;
struct usb_device *usbdev = line6->usbdev;
/* free buffer memory first: */
kfree(line6->buffer_message);
......@@ -441,82 +427,96 @@ static void line6_destruct(struct snd_card *card)
/* then free URBs: */
usb_free_urb(line6->urb_listen);
/* free interface data: */
kfree(line6);
/* decrement reference counters: */
usb_put_dev(usbdev);
}
/* get data from endpoint descriptor (see usb_maxpacket): */
static void line6_get_interval(struct usb_line6 *line6)
{
struct usb_device *usbdev = line6->usbdev;
struct usb_host_endpoint *ep;
unsigned pipe = usb_rcvintpipe(usbdev, line6->properties->ep_ctrl_r);
unsigned epnum = usb_pipeendpoint(pipe);
ep = usbdev->ep_in[epnum];
if (ep) {
line6->interval = ep->desc.bInterval;
line6->max_packet_size = le16_to_cpu(ep->desc.wMaxPacketSize);
} else {
dev_err(line6->ifcdev,
"endpoint not available, using fallback values");
line6->interval = LINE6_FALLBACK_INTERVAL;
line6->max_packet_size = LINE6_FALLBACK_MAXPACKETSIZE;
}
}
static int line6_init_cap_control(struct usb_line6 *line6)
{
int ret;
/* initialize USB buffers: */
line6->buffer_listen = kmalloc(LINE6_BUFSIZE_LISTEN, GFP_KERNEL);
if (!line6->buffer_listen)
return -ENOMEM;
line6->buffer_message = kmalloc(LINE6_MESSAGE_MAXLEN, GFP_KERNEL);
if (!line6->buffer_message)
return -ENOMEM;
line6->urb_listen = usb_alloc_urb(0, GFP_KERNEL);
if (!line6->urb_listen)
return -ENOMEM;
ret = line6_start_listen(line6);
if (ret < 0) {
dev_err(line6->ifcdev, "cannot start listening: %d\n", ret);
return ret;
}
return 0;
}
/*
Probe USB device.
*/
int line6_probe(struct usb_interface *interface,
struct usb_line6 *line6,
const struct usb_device_id *id,
const struct line6_properties *properties,
int (*private_init)(struct usb_interface *, struct usb_line6 *))
int (*private_init)(struct usb_line6 *, const struct usb_device_id *id),
size_t data_size)
{
struct usb_device *usbdev = interface_to_usbdev(interface);
struct snd_card *card;
struct usb_line6 *line6;
int interface_number;
int ret;
/* we don't handle multiple configurations */
if (usbdev->descriptor.bNumConfigurations != 1) {
ret = -ENODEV;
goto err_put;
}
/* initialize device info: */
dev_info(&interface->dev, "Line 6 %s found\n", properties->name);
if (WARN_ON(data_size < sizeof(*line6)))
return -EINVAL;
/* query interface number */
interface_number = interface->cur_altsetting->desc.bInterfaceNumber;
/* we don't handle multiple configurations */
if (usbdev->descriptor.bNumConfigurations != 1)
return -ENODEV;
ret = usb_set_interface(usbdev, interface_number,
properties->altsetting);
if (ret < 0) {
dev_err(&interface->dev, "set_interface failed\n");
goto err_put;
}
ret = snd_card_new(&interface->dev,
SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
THIS_MODULE, data_size, &card);
if (ret < 0)
return ret;
/* store basic data: */
line6 = card->private_data;
line6->card = card;
line6->properties = properties;
line6->usbdev = usbdev;
line6->ifcdev = &interface->dev;
/* get data from endpoint descriptor (see usb_maxpacket): */
{
struct usb_host_endpoint *ep;
unsigned pipe = usb_rcvintpipe(usbdev, properties->ep_ctrl_r);
unsigned epnum = usb_pipeendpoint(pipe);
ep = usbdev->ep_in[epnum];
if (ep != NULL) {
line6->interval = ep->desc.bInterval;
line6->max_packet_size =
le16_to_cpu(ep->desc.wMaxPacketSize);
} else {
line6->interval = LINE6_FALLBACK_INTERVAL;
line6->max_packet_size = LINE6_FALLBACK_MAXPACKETSIZE;
dev_err(line6->ifcdev,
"endpoint not available, using fallback values");
}
}
ret = snd_card_new(line6->ifcdev,
SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
THIS_MODULE, 0, &card);
if (ret < 0)
goto err_put;
line6->card = card;
strcpy(card->id, line6->properties->id);
strcpy(card->id, properties->id);
strcpy(card->driver, DRIVER_NAME);
strcpy(card->shortname, line6->properties->name);
sprintf(card->longname, "Line 6 %s at USB %s", line6->properties->name,
strcpy(card->shortname, properties->name);
sprintf(card->longname, "Line 6 %s at USB %s", properties->name,
dev_name(line6->ifcdev));
card->private_data = line6;
card->private_free = line6_destruct;
usb_set_intfdata(interface, line6);
......@@ -524,52 +524,43 @@ int line6_probe(struct usb_interface *interface,
/* increment reference counters: */
usb_get_dev(usbdev);
if (properties->capabilities & LINE6_CAP_CONTROL) {
/* initialize USB buffers: */
line6->buffer_listen =
kmalloc(LINE6_BUFSIZE_LISTEN, GFP_KERNEL);
if (line6->buffer_listen == NULL) {
ret = -ENOMEM;
goto err_destruct;
}
/* initialize device info: */
dev_info(&interface->dev, "Line 6 %s found\n", properties->name);
line6->buffer_message =
kmalloc(LINE6_MESSAGE_MAXLEN, GFP_KERNEL);
if (line6->buffer_message == NULL) {
ret = -ENOMEM;
goto err_destruct;
}
/* query interface number */
interface_number = interface->cur_altsetting->desc.bInterfaceNumber;
line6->urb_listen = usb_alloc_urb(0, GFP_KERNEL);
ret = usb_set_interface(usbdev, interface_number,
properties->altsetting);
if (ret < 0) {
dev_err(&interface->dev, "set_interface failed\n");
goto error;
}
if (line6->urb_listen == NULL) {
ret = -ENOMEM;
goto err_destruct;
}
line6_get_interval(line6);
ret = line6_start_listen(line6);
if (ret < 0) {
dev_err(&interface->dev, "%s: usb_submit_urb failed\n",
__func__);
goto err_destruct;
}
if (properties->capabilities & LINE6_CAP_CONTROL) {
ret = line6_init_cap_control(line6);
if (ret < 0)
goto error;
}
/* initialize device data based on device: */
ret = private_init(interface, line6);
ret = private_init(line6, id);
if (ret < 0)
goto err_destruct;
goto error;
/* creation of additional special files should go here */
dev_info(&interface->dev, "Line 6 %s now attached\n",
line6->properties->name);
properties->name);
return 0;
err_destruct:
error:
if (line6->disconnect)
line6->disconnect(line6);
snd_card_free(card);
err_put:
return ret;
}
EXPORT_SYMBOL_GPL(line6_probe);
......@@ -579,32 +570,23 @@ EXPORT_SYMBOL_GPL(line6_probe);
*/
void line6_disconnect(struct usb_interface *interface)
{
struct usb_line6 *line6;
struct usb_device *usbdev;
int interface_number;
struct usb_line6 *line6 = usb_get_intfdata(interface);
struct usb_device *usbdev = interface_to_usbdev(interface);
if (interface == NULL)
return;
usbdev = interface_to_usbdev(interface);
if (usbdev == NULL)
if (!line6)
return;
interface_number = interface->cur_altsetting->desc.bInterfaceNumber;
line6 = usb_get_intfdata(interface);
if (!line6)
if (WARN_ON(usbdev != line6->usbdev))
return;
if (line6->urb_listen != NULL)
line6_stop_listen(line6);
if (usbdev != line6->usbdev)
dev_err(line6->ifcdev, "driver bug: inconsistent usb device\n");
snd_card_disconnect(line6->card);
if (line6->line6pcm)
line6_pcm_disconnect(line6->line6pcm);
if (line6->disconnect)
line6->disconnect(interface);
line6->disconnect(line6);
dev_info(&interface->dev, "Line 6 %s now disconnected\n",
line6->properties->name);
......
sound/usb/line6/driver.h
浏览文件 @ 5e0ddd07
......@@ -157,13 +157,11 @@ struct usb_line6 {
int message_length;
void (*process_message)(struct usb_line6 *);
void (*disconnect)(struct usb_interface *);
void (*disconnect)(struct usb_line6 *line6);
};
extern char *line6_alloc_sysex_buffer(struct usb_line6 *line6, int code1,
int code2, int size);
extern ssize_t line6_nop_read(struct device *dev,
struct device_attribute *attr, char *buf);
extern int line6_read_data(struct usb_line6 *line6, int address, void *data,
size_t datalen);
extern int line6_read_serial_number(struct usb_line6 *line6,
......@@ -182,9 +180,11 @@ extern int line6_write_data(struct usb_line6 *line6, int address, void *data,
size_t datalen);
int line6_probe(struct usb_interface *interface,
struct usb_line6 *line6,
const struct usb_device_id *id,
const struct line6_properties *properties,
int (*private_init)(struct usb_interface *, struct usb_line6 *));
int (*private_init)(struct usb_line6 *, const struct usb_device_id *id),
size_t data_size);
void line6_disconnect(struct usb_interface *interface);
#ifdef CONFIG_PM
......
sound/usb/line6/midi.c
浏览文件 @ 5e0ddd07
......@@ -45,12 +45,9 @@ static void line6_midi_transmit(struct snd_rawmidi_substream *substream)
line6_rawmidi_substream_midi(substream)->line6;
struct snd_line6_midi *line6midi = line6->line6midi;
struct midi_buffer *mb = &line6midi->midibuf_out;
unsigned long flags;
unsigned char chunk[LINE6_FALLBACK_MAXPACKETSIZE];
int req, done;
spin_lock_irqsave(&line6->line6midi->midi_transmit_lock, flags);
for (;;) {
req = min(line6_midibuf_bytes_free(mb), line6->max_packet_size);
done = snd_rawmidi_transmit_peek(substream, chunk, req);
......@@ -71,8 +68,6 @@ static void line6_midi_transmit(struct snd_rawmidi_substream *substream)
send_midi_async(line6, chunk, done);
}
spin_unlock_irqrestore(&line6->line6midi->midi_transmit_lock, flags);
}
/*
......@@ -92,7 +87,7 @@ static void midi_sent(struct urb *urb)
if (status == -ESHUTDOWN)
return;
spin_lock_irqsave(&line6->line6midi->send_urb_lock, flags);
spin_lock_irqsave(&line6->line6midi->lock, flags);
num = --line6->line6midi->num_active_send_urbs;
if (num == 0) {
......@@ -103,12 +98,12 @@ static void midi_sent(struct urb *urb)
if (num == 0)
wake_up(&line6->line6midi->send_wait);
spin_unlock_irqrestore(&line6->line6midi->send_urb_lock, flags);
spin_unlock_irqrestore(&line6->line6midi->lock, flags);
}
/*
Send an asynchronous MIDI message.
Assumes that line6->line6midi->send_urb_lock is held
Assumes that line6->line6midi->lock is held
(i.e., this function is serialized).
*/
static int send_midi_async(struct usb_line6 *line6, unsigned char *data,
......@@ -166,12 +161,12 @@ static void line6_midi_output_trigger(struct snd_rawmidi_substream *substream,
line6_rawmidi_substream_midi(substream)->line6;
line6->line6midi->substream_transmit = substream;
spin_lock_irqsave(&line6->line6midi->send_urb_lock, flags);
spin_lock_irqsave(&line6->line6midi->lock, flags);
if (line6->line6midi->num_active_send_urbs == 0)
line6_midi_transmit(substream);
spin_unlock_irqrestore(&line6->line6midi->send_urb_lock, flags);
spin_unlock_irqrestore(&line6->line6midi->lock, flags);
}
static void line6_midi_output_drain(struct snd_rawmidi_substream *substream)
......@@ -281,8 +276,7 @@ int line6_init_midi(struct usb_line6 *line6)
rmidi->private_free = snd_line6_midi_free;
init_waitqueue_head(&line6midi->send_wait);
spin_lock_init(&line6midi->send_urb_lock);
spin_lock_init(&line6midi->midi_transmit_lock);
spin_lock_init(&line6midi->lock);
line6midi->line6 = line6;
err = line6_midibuf_init(&line6midi->midibuf_in, MIDI_BUFFER_SIZE, 0);
......
sound/usb/line6/midi.h
浏览文件 @ 5e0ddd07
......@@ -39,15 +39,10 @@ struct snd_line6_midi {
*/
int num_active_send_urbs;
/**
Spin lock to protect updates of send_urb.
*/
spinlock_t send_urb_lock;
/**
Spin lock to protect MIDI buffer handling.
*/
spinlock_t midi_transmit_lock;
spinlock_t lock;
/**
Wait queue for MIDI transmission.
......
sound/usb/line6/pcm.c
浏览文件 @ 5e0ddd07
......@@ -45,15 +45,22 @@ static int snd_line6_impulse_volume_put(struct snd_kcontrol *kcontrol,
{
struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
int value = ucontrol->value.integer.value[0];
int err;
if (line6pcm->impulse_volume == value)
return 0;
line6pcm->impulse_volume = value;
if (value > 0)
line6_pcm_acquire(line6pcm, LINE6_BITS_PCM_IMPULSE);
else
line6_pcm_release(line6pcm, LINE6_BITS_PCM_IMPULSE);
if (value > 0) {
err = line6_pcm_acquire(line6pcm, LINE6_STREAM_IMPULSE);
if (err < 0) {
line6pcm->impulse_volume = 0;
line6_pcm_release(line6pcm, LINE6_STREAM_IMPULSE);
return err;
}
} else {
line6_pcm_release(line6pcm, LINE6_STREAM_IMPULSE);
}
return 1;
}
......@@ -90,180 +97,277 @@ static int snd_line6_impulse_period_put(struct snd_kcontrol *kcontrol,
return 1;
}
static bool test_flags(unsigned long flags0, unsigned long flags1,
unsigned long mask)
{
return ((flags0 & mask) == 0) && ((flags1 & mask) != 0);
}
int line6_pcm_acquire(struct snd_line6_pcm *line6pcm, int channels)
/*
Unlink all currently active URBs.
*/
static void line6_unlink_audio_urbs(struct snd_line6_pcm *line6pcm,
struct line6_pcm_stream *pcms)
{
unsigned long flags_old, flags_new, flags_final;
int err;
do {
flags_old = ACCESS_ONCE(line6pcm->flags);
flags_new = flags_old | channels;
} while (cmpxchg(&line6pcm->flags, flags_old, flags_new) != flags_old);
flags_final = flags_old;
line6pcm->prev_fbuf = NULL;
if (test_flags(flags_old, flags_new, LINE6_BITS_CAPTURE_BUFFER)) {
/* Invoked multiple times in a row so allocate once only */
if (!line6pcm->buffer_in) {
line6pcm->buffer_in =
kmalloc(LINE6_ISO_BUFFERS * LINE6_ISO_PACKETS *
line6pcm->max_packet_size, GFP_KERNEL);
if (!line6pcm->buffer_in) {
err = -ENOMEM;
goto pcm_acquire_error;
}
flags_final |= channels & LINE6_BITS_CAPTURE_BUFFER;
}
}
int i;
if (test_flags(flags_old, flags_new, LINE6_BITS_CAPTURE_STREAM)) {
/*
Waiting for completion of active URBs in the stop handler is
a bug, we therefore report an error if capturing is restarted
too soon.
*/
if (line6pcm->active_urb_in | line6pcm->unlink_urb_in) {
dev_err(line6pcm->line6->ifcdev, "Device not yet ready\n");
return -EBUSY;
for (i = 0; i < LINE6_ISO_BUFFERS; i++) {
if (test_bit(i, &pcms->active_urbs)) {
if (!test_and_set_bit(i, &pcms->unlink_urbs))
usb_unlink_urb(pcms->urbs[i]);
}
line6pcm->count_in = 0;
line6pcm->prev_fsize = 0;
err = line6_submit_audio_in_all_urbs(line6pcm);
if (err < 0)
goto pcm_acquire_error;
flags_final |= channels & LINE6_BITS_CAPTURE_STREAM;
}
}
if (test_flags(flags_old, flags_new, LINE6_BITS_PLAYBACK_BUFFER)) {
/* Invoked multiple times in a row so allocate once only */
if (!line6pcm->buffer_out) {
line6pcm->buffer_out =
kmalloc(LINE6_ISO_BUFFERS * LINE6_ISO_PACKETS *
line6pcm->max_packet_size, GFP_KERNEL);
if (!line6pcm->buffer_out) {
err = -ENOMEM;
goto pcm_acquire_error;
}
flags_final |= channels & LINE6_BITS_PLAYBACK_BUFFER;
}
}
/*
Wait until unlinking of all currently active URBs has been finished.
*/
static void line6_wait_clear_audio_urbs(struct snd_line6_pcm *line6pcm,
struct line6_pcm_stream *pcms)
{
int timeout = HZ;
int i;
int alive;
if (test_flags(flags_old, flags_new, LINE6_BITS_PLAYBACK_STREAM)) {
/*
See comment above regarding PCM restart.
*/
if (line6pcm->active_urb_out | line6pcm->unlink_urb_out) {
dev_err(line6pcm->line6->ifcdev, "Device not yet ready\n");
return -EBUSY;
do {
alive = 0;
for (i = 0; i < LINE6_ISO_BUFFERS; i++) {
if (test_bit(i, &pcms->active_urbs))
alive++;
}
if (!alive)
break;
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
} while (--timeout > 0);
if (alive)
dev_err(line6pcm->line6->ifcdev,
"timeout: still %d active urbs..\n", alive);
}
line6pcm->count_out = 0;
err = line6_submit_audio_out_all_urbs(line6pcm);
if (err < 0)
goto pcm_acquire_error;
static inline struct line6_pcm_stream *
get_stream(struct snd_line6_pcm *line6pcm, int direction)
{
return (direction == SNDRV_PCM_STREAM_PLAYBACK) ?
&line6pcm->out : &line6pcm->in;
}
flags_final |= channels & LINE6_BITS_PLAYBACK_STREAM;
/* allocate a buffer if not opened yet;
* call this in line6pcm.state_change mutex
*/
static int line6_buffer_acquire(struct snd_line6_pcm *line6pcm,
struct line6_pcm_stream *pstr, int type)
{
/* Invoked multiple times in a row so allocate once only */
if (!test_and_set_bit(type, &pstr->opened) && !pstr->buffer) {
pstr->buffer = kmalloc(LINE6_ISO_BUFFERS * LINE6_ISO_PACKETS *
line6pcm->max_packet_size, GFP_KERNEL);
if (!pstr->buffer)
return -ENOMEM;
}
return 0;
pcm_acquire_error:
/*
If not all requested resources/streams could be obtained, release
those which were successfully obtained (if any).
*/
line6_pcm_release(line6pcm, flags_final & channels);
return err;
}
EXPORT_SYMBOL_GPL(line6_pcm_acquire);
int line6_pcm_release(struct snd_line6_pcm *line6pcm, int channels)
/* free a buffer if all streams are closed;
* call this in line6pcm.state_change mutex
*/
static void line6_buffer_release(struct snd_line6_pcm *line6pcm,
struct line6_pcm_stream *pstr, int type)
{
unsigned long flags_old, flags_new;
do {
flags_old = ACCESS_ONCE(line6pcm->flags);
flags_new = flags_old & ~channels;
} while (cmpxchg(&line6pcm->flags, flags_old, flags_new) != flags_old);
if (test_flags(flags_new, flags_old, LINE6_BITS_CAPTURE_STREAM))
line6_unlink_audio_in_urbs(line6pcm);
if (test_flags(flags_new, flags_old, LINE6_BITS_CAPTURE_BUFFER)) {
line6_wait_clear_audio_in_urbs(line6pcm);
line6_free_capture_buffer(line6pcm);
clear_bit(type, &pstr->opened);
if (!pstr->opened) {
line6_wait_clear_audio_urbs(line6pcm, pstr);
kfree(pstr->buffer);
pstr->buffer = NULL;
}
}
if (test_flags(flags_new, flags_old, LINE6_BITS_PLAYBACK_STREAM))
line6_unlink_audio_out_urbs(line6pcm);
/* start a PCM stream */
static int line6_stream_start(struct snd_line6_pcm *line6pcm, int direction,
int type)
{
unsigned long flags;
struct line6_pcm_stream *pstr = get_stream(line6pcm, direction);
int ret = 0;
spin_lock_irqsave(&pstr->lock, flags);
if (!test_and_set_bit(type, &pstr->running)) {
if (pstr->active_urbs || pstr->unlink_urbs) {
ret = -EBUSY;
goto error;
}
if (test_flags(flags_new, flags_old, LINE6_BITS_PLAYBACK_BUFFER)) {
line6_wait_clear_audio_out_urbs(line6pcm);
line6_free_playback_buffer(line6pcm);
pstr->count = 0;
/* Submit all currently available URBs */
if (direction == SNDRV_PCM_STREAM_PLAYBACK)
ret = line6_submit_audio_out_all_urbs(line6pcm);
else
ret = line6_submit_audio_in_all_urbs(line6pcm);
}
error:
if (ret < 0)
clear_bit(type, &pstr->running);
spin_unlock_irqrestore(&pstr->lock, flags);
return ret;
}
return 0;
/* stop a PCM stream; this doesn't sync with the unlinked URBs */
static void line6_stream_stop(struct snd_line6_pcm *line6pcm, int direction,
int type)
{
unsigned long flags;
struct line6_pcm_stream *pstr = get_stream(line6pcm, direction);
spin_lock_irqsave(&pstr->lock, flags);
clear_bit(type, &pstr->running);
if (!pstr->running) {
line6_unlink_audio_urbs(line6pcm, pstr);
if (direction == SNDRV_PCM_STREAM_CAPTURE) {
line6pcm->prev_fbuf = NULL;
line6pcm->prev_fsize = 0;
}
}
spin_unlock_irqrestore(&pstr->lock, flags);
}
EXPORT_SYMBOL_GPL(line6_pcm_release);
/* trigger callback */
/* common PCM trigger callback */
int snd_line6_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
struct snd_pcm_substream *s;
int err;
spin_lock(&line6pcm->lock_trigger);
clear_bit(LINE6_INDEX_PREPARED, &line6pcm->flags);
clear_bit(LINE6_FLAG_PREPARED, &line6pcm->flags);
snd_pcm_group_for_each_entry(s, substream) {
if (s->pcm->card != substream->pcm->card)
continue;
switch (s->stream) {
case SNDRV_PCM_STREAM_PLAYBACK:
err = snd_line6_playback_trigger(line6pcm, cmd);
if (err < 0) {
spin_unlock(&line6pcm->lock_trigger);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
err = line6_stream_start(line6pcm, s->stream,
LINE6_STREAM_PCM);
if (err < 0)
return err;
}
break;
case SNDRV_PCM_STREAM_CAPTURE:
err = snd_line6_capture_trigger(line6pcm, cmd);
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
line6_stream_stop(line6pcm, s->stream,
LINE6_STREAM_PCM);
break;
if (err < 0) {
spin_unlock(&line6pcm->lock_trigger);
return err;
}
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
if (s->stream != SNDRV_PCM_STREAM_PLAYBACK)
return -EINVAL;
set_bit(LINE6_FLAG_PAUSE_PLAYBACK, &line6pcm->flags);
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
if (s->stream != SNDRV_PCM_STREAM_PLAYBACK)
return -EINVAL;
clear_bit(LINE6_FLAG_PAUSE_PLAYBACK, &line6pcm->flags);
break;
default:
dev_err(line6pcm->line6->ifcdev,
"Unknown stream direction %d\n", s->stream);
return -EINVAL;
}
}
spin_unlock(&line6pcm->lock_trigger);
return 0;
}
/* common PCM pointer callback */
snd_pcm_uframes_t snd_line6_pointer(struct snd_pcm_substream *substream)
{
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
struct line6_pcm_stream *pstr = get_stream(line6pcm, substream->stream);
return pstr->pos_done;
}
/* Acquire and start duplex streams:
* type is either LINE6_STREAM_IMPULSE or LINE6_STREAM_MONITOR
*/
int line6_pcm_acquire(struct snd_line6_pcm *line6pcm, int type)
{
struct line6_pcm_stream *pstr;
int ret = 0, dir;
mutex_lock(&line6pcm->state_mutex);
for (dir = 0; dir < 2; dir++) {
pstr = get_stream(line6pcm, dir);
ret = line6_buffer_acquire(line6pcm, pstr, type);
if (ret < 0)
goto error;
if (!pstr->running)
line6_wait_clear_audio_urbs(line6pcm, pstr);
}
for (dir = 0; dir < 2; dir++) {
ret = line6_stream_start(line6pcm, dir, type);
if (ret < 0)
goto error;
}
error:
mutex_unlock(&line6pcm->state_mutex);
if (ret < 0)
line6_pcm_release(line6pcm, type);
return ret;
}
EXPORT_SYMBOL_GPL(line6_pcm_acquire);
/* Stop and release duplex streams */
void line6_pcm_release(struct snd_line6_pcm *line6pcm, int type)
{
struct line6_pcm_stream *pstr;
int dir;
mutex_lock(&line6pcm->state_mutex);
for (dir = 0; dir < 2; dir++)
line6_stream_stop(line6pcm, dir, type);
for (dir = 0; dir < 2; dir++) {
pstr = get_stream(line6pcm, dir);
line6_buffer_release(line6pcm, pstr, type);
}
mutex_unlock(&line6pcm->state_mutex);
}
EXPORT_SYMBOL_GPL(line6_pcm_release);
/* common PCM hw_params callback */
int snd_line6_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
int ret;
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
struct line6_pcm_stream *pstr = get_stream(line6pcm, substream->stream);
mutex_lock(&line6pcm->state_mutex);
ret = line6_buffer_acquire(line6pcm, pstr, LINE6_STREAM_PCM);
if (ret < 0)
goto error;
ret = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params));
if (ret < 0) {
line6_buffer_release(line6pcm, pstr, LINE6_STREAM_PCM);
goto error;
}
pstr->period = params_period_bytes(hw_params);
error:
mutex_unlock(&line6pcm->state_mutex);
return ret;
}
/* common PCM hw_free callback */
int snd_line6_hw_free(struct snd_pcm_substream *substream)
{
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
struct line6_pcm_stream *pstr = get_stream(line6pcm, substream->stream);
mutex_lock(&line6pcm->state_mutex);
line6_buffer_release(line6pcm, pstr, LINE6_STREAM_PCM);
mutex_unlock(&line6pcm->state_mutex);
return snd_pcm_lib_free_pages(substream);
}
/* control info callback */
static int snd_line6_control_playback_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
......@@ -282,7 +386,7 @@ static int snd_line6_control_playback_get(struct snd_kcontrol *kcontrol,
int i;
struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
for (i = 2; i--;)
for (i = 0; i < 2; i++)
ucontrol->value.integer.value[i] = line6pcm->volume_playback[i];
return 0;
......@@ -295,7 +399,7 @@ static int snd_line6_control_playback_put(struct snd_kcontrol *kcontrol,
int i, changed = 0;
struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
for (i = 2; i--;)
for (i = 0; i < 2; i++)
if (line6pcm->volume_playback[i] !=
ucontrol->value.integer.value[i]) {
line6pcm->volume_playback[i] =
......@@ -334,21 +438,24 @@ static struct snd_kcontrol_new line6_controls[] = {
/*
Cleanup the PCM device.
*/
static void line6_cleanup_pcm(struct snd_pcm *pcm)
static void cleanup_urbs(struct line6_pcm_stream *pcms)
{
int i;
struct snd_line6_pcm *line6pcm = snd_pcm_chip(pcm);
for (i = LINE6_ISO_BUFFERS; i--;) {
if (line6pcm->urb_audio_out[i]) {
usb_kill_urb(line6pcm->urb_audio_out[i]);
usb_free_urb(line6pcm->urb_audio_out[i]);
}
if (line6pcm->urb_audio_in[i]) {
usb_kill_urb(line6pcm->urb_audio_in[i]);
usb_free_urb(line6pcm->urb_audio_in[i]);
for (i = 0; i < LINE6_ISO_BUFFERS; i++) {
if (pcms->urbs[i]) {
usb_kill_urb(pcms->urbs[i]);
usb_free_urb(pcms->urbs[i]);
}
}
}
static void line6_cleanup_pcm(struct snd_pcm *pcm)
{
struct snd_line6_pcm *line6pcm = snd_pcm_chip(pcm);
cleanup_urbs(&line6pcm->out);
cleanup_urbs(&line6pcm->in);
kfree(line6pcm);
}
......@@ -383,8 +490,10 @@ static int snd_line6_new_pcm(struct usb_line6 *line6, struct snd_pcm **pcm_ret)
*/
void line6_pcm_disconnect(struct snd_line6_pcm *line6pcm)
{
line6_unlink_wait_clear_audio_out_urbs(line6pcm);
line6_unlink_wait_clear_audio_in_urbs(line6pcm);
line6_unlink_audio_urbs(line6pcm, &line6pcm->out);
line6_unlink_audio_urbs(line6pcm, &line6pcm->in);
line6_wait_clear_audio_urbs(line6pcm, &line6pcm->out);
line6_wait_clear_audio_urbs(line6pcm, &line6pcm->in);
}
/*
......@@ -411,6 +520,7 @@ int line6_init_pcm(struct usb_line6 *line6,
if (!line6pcm)
return -ENOMEM;
mutex_init(&line6pcm->state_mutex);
line6pcm->pcm = pcm;
line6pcm->properties = properties;
line6pcm->volume_playback[0] = line6pcm->volume_playback[1] = 255;
......@@ -424,9 +534,8 @@ int line6_init_pcm(struct usb_line6 *line6,
usb_maxpacket(line6->usbdev,
usb_sndisocpipe(line6->usbdev, ep_write), 1));
spin_lock_init(&line6pcm->lock_audio_out);
spin_lock_init(&line6pcm->lock_audio_in);
spin_lock_init(&line6pcm->lock_trigger);
spin_lock_init(&line6pcm->out.lock);
spin_lock_init(&line6pcm->in.lock);
line6pcm->impulse_period = LINE6_IMPULSE_DEFAULT_PERIOD;
line6->line6pcm = line6pcm;
......@@ -458,30 +567,22 @@ EXPORT_SYMBOL_GPL(line6_init_pcm);
int snd_line6_prepare(struct snd_pcm_substream *substream)
{
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
switch (substream->stream) {
case SNDRV_PCM_STREAM_PLAYBACK:
if ((line6pcm->flags & LINE6_BITS_PLAYBACK_STREAM) == 0)
line6_unlink_wait_clear_audio_out_urbs(line6pcm);
break;
case SNDRV_PCM_STREAM_CAPTURE:
if ((line6pcm->flags & LINE6_BITS_CAPTURE_STREAM) == 0)
line6_unlink_wait_clear_audio_in_urbs(line6pcm);
break;
}
if (!test_and_set_bit(LINE6_INDEX_PREPARED, &line6pcm->flags)) {
line6pcm->count_out = 0;
line6pcm->pos_out = 0;
line6pcm->pos_out_done = 0;
line6pcm->bytes_out = 0;
line6pcm->count_in = 0;
line6pcm->pos_in_done = 0;
line6pcm->bytes_in = 0;
struct line6_pcm_stream *pstr = get_stream(line6pcm, substream->stream);
mutex_lock(&line6pcm->state_mutex);
if (!pstr->running)
line6_wait_clear_audio_urbs(line6pcm, pstr);
if (!test_and_set_bit(LINE6_FLAG_PREPARED, &line6pcm->flags)) {
line6pcm->out.count = 0;
line6pcm->out.pos = 0;
line6pcm->out.pos_done = 0;
line6pcm->out.bytes = 0;
line6pcm->in.count = 0;
line6pcm->in.pos_done = 0;
line6pcm->in.bytes = 0;
}
mutex_unlock(&line6pcm->state_mutex);
return 0;
}
sound/usb/line6/pcm.h
浏览文件 @ 5e0ddd07
......@@ -54,109 +54,33 @@
However, from the device's point of view, there is just a single
capture and playback stream, which must be shared between these
subsystems. It is therefore necessary to maintain the state of the
subsystems with respect to PCM usage. We define several constants of
the form LINE6_BIT_PCM_<subsystem>_<direction>_<resource> with the
following meanings:
*) <subsystem> is one of
-) ALSA: PCM playback and capture via ALSA
-) MONITOR: software monitoring
-) IMPULSE: optional impulse response measurement
*) <direction> is one of
-) PLAYBACK: audio output (from host to device)
-) CAPTURE: audio input (from device to host)
*) <resource> is one of
-) BUFFER: buffer required by PCM data stream
-) STREAM: actual PCM data stream
The subsystems call line6_pcm_acquire() to acquire the (shared)
resources needed for a particular operation (e.g., allocate the buffer
for ALSA playback or start the capture stream for software monitoring).
When a resource is no longer needed, it is released by calling
line6_pcm_release(). Buffer allocation and stream startup are handled
separately to allow the ALSA kernel driver to perform them at
appropriate places (since the callback which starts a PCM stream is not
allowed to sleep).
subsystems with respect to PCM usage.
We define two bit flags, "opened" and "running", for each playback
or capture stream. Both can contain the bit flag corresponding to
LINE6_STREAM_* type,
LINE6_STREAM_PCM = ALSA PCM playback or capture
LINE6_STREAM_MONITOR = software monitoring
IMPULSE = optional impulse response measurement
The opened flag indicates whether the buffer is allocated while
the running flag indicates whether the stream is running.
For monitor or impulse operations, the driver needs to call
snd_line6_duplex_acquire() or snd_line6_duplex_release() with the
appropriate LINE6_STREAM_* flag.
*/
/* stream types */
enum {
/* individual bit indices: */
LINE6_INDEX_PCM_ALSA_PLAYBACK_BUFFER,
LINE6_INDEX_PCM_ALSA_PLAYBACK_STREAM,
LINE6_INDEX_PCM_ALSA_CAPTURE_BUFFER,
LINE6_INDEX_PCM_ALSA_CAPTURE_STREAM,
LINE6_INDEX_PCM_MONITOR_PLAYBACK_BUFFER,
LINE6_INDEX_PCM_MONITOR_PLAYBACK_STREAM,
LINE6_INDEX_PCM_MONITOR_CAPTURE_BUFFER,
LINE6_INDEX_PCM_MONITOR_CAPTURE_STREAM,
LINE6_INDEX_PCM_IMPULSE_PLAYBACK_BUFFER,
LINE6_INDEX_PCM_IMPULSE_PLAYBACK_STREAM,
LINE6_INDEX_PCM_IMPULSE_CAPTURE_BUFFER,
LINE6_INDEX_PCM_IMPULSE_CAPTURE_STREAM,
LINE6_INDEX_PAUSE_PLAYBACK,
LINE6_INDEX_PREPARED,
#define LINE6_BIT(x) LINE6_BIT_ ## x = 1 << LINE6_INDEX_ ## x
/* individual bit masks: */
LINE6_BIT(PCM_ALSA_PLAYBACK_BUFFER),
LINE6_BIT(PCM_ALSA_PLAYBACK_STREAM),
LINE6_BIT(PCM_ALSA_CAPTURE_BUFFER),
LINE6_BIT(PCM_ALSA_CAPTURE_STREAM),
LINE6_BIT(PCM_MONITOR_PLAYBACK_BUFFER),
LINE6_BIT(PCM_MONITOR_PLAYBACK_STREAM),
LINE6_BIT(PCM_MONITOR_CAPTURE_BUFFER),
LINE6_BIT(PCM_MONITOR_CAPTURE_STREAM),
LINE6_BIT(PCM_IMPULSE_PLAYBACK_BUFFER),
LINE6_BIT(PCM_IMPULSE_PLAYBACK_STREAM),
LINE6_BIT(PCM_IMPULSE_CAPTURE_BUFFER),
LINE6_BIT(PCM_IMPULSE_CAPTURE_STREAM),
LINE6_BIT(PAUSE_PLAYBACK),
LINE6_BIT(PREPARED),
/* combined bit masks (by operation): */
LINE6_BITS_PCM_ALSA_BUFFER =
LINE6_BIT_PCM_ALSA_PLAYBACK_BUFFER |
LINE6_BIT_PCM_ALSA_CAPTURE_BUFFER,
LINE6_BITS_PCM_ALSA_STREAM =
LINE6_BIT_PCM_ALSA_PLAYBACK_STREAM |
LINE6_BIT_PCM_ALSA_CAPTURE_STREAM,
LINE6_BITS_PCM_MONITOR =
LINE6_BIT_PCM_MONITOR_PLAYBACK_BUFFER |
LINE6_BIT_PCM_MONITOR_PLAYBACK_STREAM |
LINE6_BIT_PCM_MONITOR_CAPTURE_BUFFER |
LINE6_BIT_PCM_MONITOR_CAPTURE_STREAM,
LINE6_BITS_PCM_IMPULSE =
LINE6_BIT_PCM_IMPULSE_PLAYBACK_BUFFER |
LINE6_BIT_PCM_IMPULSE_PLAYBACK_STREAM |
LINE6_BIT_PCM_IMPULSE_CAPTURE_BUFFER |
LINE6_BIT_PCM_IMPULSE_CAPTURE_STREAM,
/* combined bit masks (by direction): */
LINE6_BITS_PLAYBACK_BUFFER =
LINE6_BIT_PCM_IMPULSE_PLAYBACK_BUFFER |
LINE6_BIT_PCM_ALSA_PLAYBACK_BUFFER |
LINE6_BIT_PCM_MONITOR_PLAYBACK_BUFFER,
LINE6_BITS_PLAYBACK_STREAM =
LINE6_BIT_PCM_IMPULSE_PLAYBACK_STREAM |
LINE6_BIT_PCM_ALSA_PLAYBACK_STREAM |
LINE6_BIT_PCM_MONITOR_PLAYBACK_STREAM,
LINE6_BITS_CAPTURE_BUFFER =
LINE6_BIT_PCM_IMPULSE_CAPTURE_BUFFER |
LINE6_BIT_PCM_ALSA_CAPTURE_BUFFER |
LINE6_BIT_PCM_MONITOR_CAPTURE_BUFFER,
LINE6_BITS_CAPTURE_STREAM =
LINE6_BIT_PCM_IMPULSE_CAPTURE_STREAM |
LINE6_BIT_PCM_ALSA_CAPTURE_STREAM |
LINE6_BIT_PCM_MONITOR_CAPTURE_STREAM,
LINE6_BITS_STREAM =
LINE6_BITS_PLAYBACK_STREAM |
LINE6_BITS_CAPTURE_STREAM
LINE6_STREAM_PCM,
LINE6_STREAM_MONITOR,
LINE6_STREAM_IMPULSE,
};
/* misc bit flags for PCM operation */
enum {
LINE6_FLAG_PAUSE_PLAYBACK,
LINE6_FLAG_PREPARED,
};
struct line6_pcm_properties {
......@@ -165,153 +89,93 @@ struct line6_pcm_properties {
int bytes_per_frame;
};
struct snd_line6_pcm {
/**
Pointer back to the Line 6 driver data structure.
*/
struct usb_line6 *line6;
struct line6_pcm_stream {
/* allocated URBs */
struct urb *urbs[LINE6_ISO_BUFFERS];
/**
Properties.
*/
struct line6_pcm_properties *properties;
/* Temporary buffer;
* Since the packet size is not known in advance, this buffer is
* large enough to store maximum size packets.
*/
unsigned char *buffer;
/**
ALSA pcm stream
*/
struct snd_pcm *pcm;
/* Free frame position in the buffer. */
snd_pcm_uframes_t pos;
/**
URBs for audio playback.
*/
struct urb *urb_audio_out[LINE6_ISO_BUFFERS];
/* Count processed bytes;
* This is modulo period size (to determine when a period is finished).
*/
unsigned bytes;
/**
URBs for audio capture.
*/
struct urb *urb_audio_in[LINE6_ISO_BUFFERS];
/* Counter to create desired sample rate */
unsigned count;
/**
Temporary buffer for playback.
Since the packet size is not known in advance, this buffer is
large enough to store maximum size packets.
*/
unsigned char *buffer_out;
/* period size in bytes */
unsigned period;
/**
Temporary buffer for capture.
Since the packet size is not known in advance, this buffer is
large enough to store maximum size packets.
*/
unsigned char *buffer_in;
/* Processed frame position in the buffer;
* The contents of the ring buffer have been consumed by the USB
* subsystem (i.e., sent to the USB device) up to this position.
*/
snd_pcm_uframes_t pos_done;
/**
Previously captured frame (for software monitoring).
*/
unsigned char *prev_fbuf;
/* Bit mask of active URBs */
unsigned long active_urbs;
/**
Size of previously captured frame (for software monitoring).
*/
int prev_fsize;
/* Bit mask of URBs currently being unlinked */
unsigned long unlink_urbs;
/**
Free frame position in the playback buffer.
*/
snd_pcm_uframes_t pos_out;
/* Spin lock to protect updates of the buffer positions (not contents)
*/
spinlock_t lock;
/**
Count processed bytes for playback.
This is modulo period size (to determine when a period is
finished).
*/
unsigned bytes_out;
/* Bit flags for operational stream types */
unsigned long opened;
/**
Counter to create desired playback sample rate.
*/
unsigned count_out;
/* Bit flags for running stream types */
unsigned long running;
/**
Playback period size in bytes
*/
unsigned period_out;
int last_frame;
};
struct snd_line6_pcm {
/**
Processed frame position in the playback buffer.
The contents of the output ring buffer have been consumed by
the USB subsystem (i.e., sent to the USB device) up to this
position.
Pointer back to the Line 6 driver data structure.
*/
snd_pcm_uframes_t pos_out_done;
struct usb_line6 *line6;
/**
Count processed bytes for capture.
This is modulo period size (to determine when a period is
finished).
Properties.
*/
unsigned bytes_in;
struct line6_pcm_properties *properties;
/**
Counter to create desired capture sample rate.
ALSA pcm stream
*/
unsigned count_in;
struct snd_pcm *pcm;
/**
Capture period size in bytes
*/
unsigned period_in;
/* protection to state changes of in/out streams */
struct mutex state_mutex;
/* Capture and playback streams */
struct line6_pcm_stream in;
struct line6_pcm_stream out;
/**
Processed frame position in the capture buffer.
The contents of the output ring buffer have been consumed by
the USB subsystem (i.e., sent to the USB device) up to this
position.
Previously captured frame (for software monitoring).
*/
snd_pcm_uframes_t pos_in_done;
unsigned char *prev_fbuf;
/**
Bit mask of active playback URBs.
Size of previously captured frame (for software monitoring).
*/
unsigned long active_urb_out;
int prev_fsize;
/**
Maximum size of USB packet.
*/
int max_packet_size;
/**
Bit mask of active capture URBs.
*/
unsigned long active_urb_in;
/**
Bit mask of playback URBs currently being unlinked.
*/
unsigned long unlink_urb_out;
/**
Bit mask of capture URBs currently being unlinked.
*/
unsigned long unlink_urb_in;
/**
Spin lock to protect updates of the playback buffer positions (not
contents!)
*/
spinlock_t lock_audio_out;
/**
Spin lock to protect updates of the capture buffer positions (not
contents!)
*/
spinlock_t lock_audio_in;
/**
Spin lock to protect trigger.
*/
spinlock_t lock_trigger;
/**
PCM playback volume (left and right).
*/
......@@ -338,19 +202,21 @@ struct snd_line6_pcm {
int impulse_count;
/**
Several status bits (see LINE6_BIT_*).
Several status bits (see LINE6_FLAG_*).
*/
unsigned long flags;
int last_frame_in, last_frame_out;
};
extern int line6_init_pcm(struct usb_line6 *line6,
struct line6_pcm_properties *properties);
extern int snd_line6_trigger(struct snd_pcm_substream *substream, int cmd);
extern int snd_line6_prepare(struct snd_pcm_substream *substream);
extern int snd_line6_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params);
extern int snd_line6_hw_free(struct snd_pcm_substream *substream);
extern snd_pcm_uframes_t snd_line6_pointer(struct snd_pcm_substream *substream);
extern void line6_pcm_disconnect(struct snd_line6_pcm *line6pcm);
extern int line6_pcm_acquire(struct snd_line6_pcm *line6pcm, int channels);
extern int line6_pcm_release(struct snd_line6_pcm *line6pcm, int channels);
extern int line6_pcm_acquire(struct snd_line6_pcm *line6pcm, int type);
extern void line6_pcm_release(struct snd_line6_pcm *line6pcm, int type);
#endif
sound/usb/line6/playback.c
浏览文件 @ 5e0ddd07
......@@ -37,7 +37,8 @@ static void change_volume(struct urb *urb_out, int volume[],
buf_end = p + urb_out->transfer_buffer_length / sizeof(*p);
for (; p < buf_end; ++p) {
*p = (*p * volume[chn & 1]) >> 8;
int val = (*p * volume[chn & 1]) >> 8;
*p = clamp(val, 0x7fff, -0x8000);
++chn;
}
} else if (bytes_per_frame == 6) {
......@@ -51,6 +52,7 @@ static void change_volume(struct urb *urb_out, int volume[],
val = p[0] + (p[1] << 8) + ((signed char)p[2] << 16);
val = (val * volume[chn & 1]) >> 8;
val = clamp(val, 0x7fffff, -0x800000);
p[0] = val;
p[1] = val >> 8;
p[2] = val >> 16;
......@@ -118,8 +120,10 @@ static void add_monitor_signal(struct urb *urb_out, unsigned char *signal,
po = (short *)urb_out->transfer_buffer;
buf_end = po + urb_out->transfer_buffer_length / sizeof(*po);
for (; po < buf_end; ++pi, ++po)
*po += (*pi * volume) >> 8;
for (; po < buf_end; ++pi, ++po) {
int val = *po + ((*pi * volume) >> 8);
*po = clamp(val, 0x7fff, -0x8000);
}
}
/*
......@@ -130,11 +134,11 @@ static void add_monitor_signal(struct urb *urb_out, unsigned char *signal,
/*
Find a free URB, prepare audio data, and submit URB.
must be called in line6pcm->out.lock context
*/
static int submit_audio_out_urb(struct snd_line6_pcm *line6pcm)
{
int index;
unsigned long flags;
int i, urb_size, urb_frames;
int ret;
const int bytes_per_frame = line6pcm->properties->bytes_per_frame;
......@@ -145,17 +149,15 @@ static int submit_audio_out_urb(struct snd_line6_pcm *line6pcm)
(USB_INTERVALS_PER_SECOND / LINE6_ISO_INTERVAL);
struct urb *urb_out;
spin_lock_irqsave(&line6pcm->lock_audio_out, flags);
index =
find_first_zero_bit(&line6pcm->active_urb_out, LINE6_ISO_BUFFERS);
find_first_zero_bit(&line6pcm->out.active_urbs, LINE6_ISO_BUFFERS);
if (index < 0 || index >= LINE6_ISO_BUFFERS) {
spin_unlock_irqrestore(&line6pcm->lock_audio_out, flags);
dev_err(line6pcm->line6->ifcdev, "no free URB found\n");
return -EINVAL;
}
urb_out = line6pcm->urb_audio_out[index];
urb_out = line6pcm->out.urbs[index];
urb_size = 0;
for (i = 0; i < LINE6_ISO_PACKETS; ++i) {
......@@ -164,15 +166,13 @@ static int submit_audio_out_urb(struct snd_line6_pcm *line6pcm)
struct usb_iso_packet_descriptor *fout =
&urb_out->iso_frame_desc[i];
if (line6pcm->flags & LINE6_BITS_CAPTURE_STREAM)
fsize = line6pcm->prev_fsize;
fsize = line6pcm->prev_fsize;
if (fsize == 0) {
int n;
line6pcm->count_out += frame_increment;
n = line6pcm->count_out / frame_factor;
line6pcm->count_out -= n * frame_factor;
line6pcm->out.count += frame_increment;
n = line6pcm->out.count / frame_factor;
line6pcm->out.count -= n * frame_factor;
fsize = n * bytes_per_frame;
}
......@@ -183,36 +183,35 @@ static int submit_audio_out_urb(struct snd_line6_pcm *line6pcm)
if (urb_size == 0) {
/* can't determine URB size */
spin_unlock_irqrestore(&line6pcm->lock_audio_out, flags);
dev_err(line6pcm->line6->ifcdev, "driver bug: urb_size = 0\n");
return -EINVAL;
}
urb_frames = urb_size / bytes_per_frame;
urb_out->transfer_buffer =
line6pcm->buffer_out +
line6pcm->out.buffer +
index * LINE6_ISO_PACKETS * line6pcm->max_packet_size;
urb_out->transfer_buffer_length = urb_size;
urb_out->context = line6pcm;
if (test_bit(LINE6_INDEX_PCM_ALSA_PLAYBACK_STREAM, &line6pcm->flags) &&
!test_bit(LINE6_INDEX_PAUSE_PLAYBACK, &line6pcm->flags)) {
if (test_bit(LINE6_STREAM_PCM, &line6pcm->out.running) &&
!test_bit(LINE6_FLAG_PAUSE_PLAYBACK, &line6pcm->flags)) {
struct snd_pcm_runtime *runtime =
get_substream(line6pcm, SNDRV_PCM_STREAM_PLAYBACK)->runtime;
if (line6pcm->pos_out + urb_frames > runtime->buffer_size) {
if (line6pcm->out.pos + urb_frames > runtime->buffer_size) {
/*
The transferred area goes over buffer boundary,
copy the data to the temp buffer.
*/
int len;
len = runtime->buffer_size - line6pcm->pos_out;
len = runtime->buffer_size - line6pcm->out.pos;
if (len > 0) {
memcpy(urb_out->transfer_buffer,
runtime->dma_area +
line6pcm->pos_out * bytes_per_frame,
line6pcm->out.pos * bytes_per_frame,
len * bytes_per_frame);
memcpy(urb_out->transfer_buffer +
len * bytes_per_frame, runtime->dma_area,
......@@ -223,26 +222,27 @@ static int submit_audio_out_urb(struct snd_line6_pcm *line6pcm)
} else {
memcpy(urb_out->transfer_buffer,
runtime->dma_area +
line6pcm->pos_out * bytes_per_frame,
line6pcm->out.pos * bytes_per_frame,
urb_out->transfer_buffer_length);
}
line6pcm->pos_out += urb_frames;
if (line6pcm->pos_out >= runtime->buffer_size)
line6pcm->pos_out -= runtime->buffer_size;
line6pcm->out.pos += urb_frames;
if (line6pcm->out.pos >= runtime->buffer_size)
line6pcm->out.pos -= runtime->buffer_size;
change_volume(urb_out, line6pcm->volume_playback,
bytes_per_frame);
} else {
memset(urb_out->transfer_buffer, 0,
urb_out->transfer_buffer_length);
}
change_volume(urb_out, line6pcm->volume_playback, bytes_per_frame);
if (line6pcm->prev_fbuf != NULL) {
if (line6pcm->flags & LINE6_BITS_PCM_IMPULSE) {
spin_lock_nested(&line6pcm->in.lock, SINGLE_DEPTH_NESTING);
if (line6pcm->prev_fbuf) {
if (test_bit(LINE6_STREAM_IMPULSE, &line6pcm->out.running)) {
create_impulse_test_signal(line6pcm, urb_out,
bytes_per_frame);
if (line6pcm->flags &
LINE6_BIT_PCM_ALSA_CAPTURE_STREAM) {
if (test_bit(LINE6_STREAM_PCM, &line6pcm->in.running)) {
line6_capture_copy(line6pcm,
urb_out->transfer_buffer,
urb_out->
......@@ -251,101 +251,43 @@ static int submit_audio_out_urb(struct snd_line6_pcm *line6pcm)
urb_out->transfer_buffer_length);
}
} else {
if (!
(line6pcm->line6->
properties->capabilities & LINE6_CAP_HWMON)
&& (line6pcm->flags & LINE6_BITS_PLAYBACK_STREAM)
&& (line6pcm->flags & LINE6_BITS_CAPTURE_STREAM))
if (!(line6pcm->line6->properties->capabilities & LINE6_CAP_HWMON)
&& line6pcm->out.running && line6pcm->in.running)
add_monitor_signal(urb_out, line6pcm->prev_fbuf,
line6pcm->volume_monitor,
bytes_per_frame);
}
line6pcm->prev_fbuf = NULL;
line6pcm->prev_fsize = 0;
}
spin_unlock(&line6pcm->in.lock);
ret = usb_submit_urb(urb_out, GFP_ATOMIC);
if (ret == 0)
set_bit(index, &line6pcm->active_urb_out);
set_bit(index, &line6pcm->out.active_urbs);
else
dev_err(line6pcm->line6->ifcdev,
"URB out #%d submission failed (%d)\n", index, ret);
spin_unlock_irqrestore(&line6pcm->lock_audio_out, flags);
return 0;
}
/*
Submit all currently available playback URBs.
*/
must be called in line6pcm->out.lock context
*/
int line6_submit_audio_out_all_urbs(struct snd_line6_pcm *line6pcm)
{
int ret, i;
int ret = 0, i;
for (i = 0; i < LINE6_ISO_BUFFERS; ++i) {
ret = submit_audio_out_urb(line6pcm);
if (ret < 0)
return ret;
}
return 0;
}
/*
Unlink all currently active playback URBs.
*/
void line6_unlink_audio_out_urbs(struct snd_line6_pcm *line6pcm)
{
unsigned int i;
for (i = LINE6_ISO_BUFFERS; i--;) {
if (test_bit(i, &line6pcm->active_urb_out)) {
if (!test_and_set_bit(i, &line6pcm->unlink_urb_out)) {
struct urb *u = line6pcm->urb_audio_out[i];
usb_unlink_urb(u);
}
}
}
}
/*
Wait until unlinking of all currently active playback URBs has been
finished.
*/
void line6_wait_clear_audio_out_urbs(struct snd_line6_pcm *line6pcm)
{
int timeout = HZ;
unsigned int i;
int alive;
do {
alive = 0;
for (i = LINE6_ISO_BUFFERS; i--;) {
if (test_bit(i, &line6pcm->active_urb_out))
alive++;
}
if (!alive)
break;
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
} while (--timeout > 0);
if (alive)
snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive);
}
/*
Unlink all currently active playback URBs, and wait for finishing.
*/
void line6_unlink_wait_clear_audio_out_urbs(struct snd_line6_pcm *line6pcm)
{
line6_unlink_audio_out_urbs(line6pcm);
line6_wait_clear_audio_out_urbs(line6pcm);
}
}
void line6_free_playback_buffer(struct snd_line6_pcm *line6pcm)
{
kfree(line6pcm->buffer_out);
line6pcm->buffer_out = NULL;
return ret;
}
/*
......@@ -363,56 +305,56 @@ static void audio_out_callback(struct urb *urb)
memset(urb->transfer_buffer, 0, urb->transfer_buffer_length);
#endif
line6pcm->last_frame_out = urb->start_frame;
line6pcm->out.last_frame = urb->start_frame;
/* find index of URB */
for (index = LINE6_ISO_BUFFERS; index--;)
if (urb == line6pcm->urb_audio_out[index])
for (index = 0; index < LINE6_ISO_BUFFERS; index++)
if (urb == line6pcm->out.urbs[index])
break;
if (index < 0)
if (index >= LINE6_ISO_BUFFERS)
return; /* URB has been unlinked asynchronously */
for (i = LINE6_ISO_PACKETS; i--;)
for (i = 0; i < LINE6_ISO_PACKETS; i++)
length += urb->iso_frame_desc[i].length;
spin_lock_irqsave(&line6pcm->lock_audio_out, flags);
spin_lock_irqsave(&line6pcm->out.lock, flags);
if (test_bit(LINE6_INDEX_PCM_ALSA_PLAYBACK_STREAM, &line6pcm->flags)) {
if (test_bit(LINE6_STREAM_PCM, &line6pcm->out.running)) {
struct snd_pcm_runtime *runtime = substream->runtime;
line6pcm->pos_out_done +=
line6pcm->out.pos_done +=
length / line6pcm->properties->bytes_per_frame;
if (line6pcm->pos_out_done >= runtime->buffer_size)
line6pcm->pos_out_done -= runtime->buffer_size;
if (line6pcm->out.pos_done >= runtime->buffer_size)
line6pcm->out.pos_done -= runtime->buffer_size;
}
clear_bit(index, &line6pcm->active_urb_out);
clear_bit(index, &line6pcm->out.active_urbs);
for (i = LINE6_ISO_PACKETS; i--;)
for (i = 0; i < LINE6_ISO_PACKETS; i++)
if (urb->iso_frame_desc[i].status == -EXDEV) {
shutdown = 1;
break;
}
if (test_and_clear_bit(index, &line6pcm->unlink_urb_out))
if (test_and_clear_bit(index, &line6pcm->out.unlink_urbs))
shutdown = 1;
spin_unlock_irqrestore(&line6pcm->lock_audio_out, flags);
if (!shutdown) {
submit_audio_out_urb(line6pcm);
if (test_bit(LINE6_INDEX_PCM_ALSA_PLAYBACK_STREAM,
&line6pcm->flags)) {
line6pcm->bytes_out += length;
if (line6pcm->bytes_out >= line6pcm->period_out) {
line6pcm->bytes_out %= line6pcm->period_out;
if (test_bit(LINE6_STREAM_PCM, &line6pcm->out.running)) {
line6pcm->out.bytes += length;
if (line6pcm->out.bytes >= line6pcm->out.period) {
line6pcm->out.bytes %= line6pcm->out.period;
spin_unlock(&line6pcm->out.lock);
snd_pcm_period_elapsed(substream);
spin_lock(&line6pcm->out.lock);
}
}
}
spin_unlock_irqrestore(&line6pcm->out.lock, flags);
}
/* open playback callback */
......@@ -438,110 +380,16 @@ static int snd_line6_playback_close(struct snd_pcm_substream *substream)
return 0;
}
/* hw_params playback callback */
static int snd_line6_playback_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
int ret;
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
/* -- Florian Demski [FD] */
/* don't ask me why, but this fixes the bug on my machine */
if (line6pcm == NULL) {
if (substream->pcm == NULL)
return -ENOMEM;
if (substream->pcm->private_data == NULL)
return -ENOMEM;
substream->private_data = substream->pcm->private_data;
line6pcm = snd_pcm_substream_chip(substream);
}
/* -- [FD] end */
ret = line6_pcm_acquire(line6pcm, LINE6_BIT_PCM_ALSA_PLAYBACK_BUFFER);
if (ret < 0)
return ret;
ret = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params));
if (ret < 0) {
line6_pcm_release(line6pcm, LINE6_BIT_PCM_ALSA_PLAYBACK_BUFFER);
return ret;
}
line6pcm->period_out = params_period_bytes(hw_params);
return 0;
}
/* hw_free playback callback */
static int snd_line6_playback_hw_free(struct snd_pcm_substream *substream)
{
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
line6_pcm_release(line6pcm, LINE6_BIT_PCM_ALSA_PLAYBACK_BUFFER);
return snd_pcm_lib_free_pages(substream);
}
/* trigger playback callback */
int snd_line6_playback_trigger(struct snd_line6_pcm *line6pcm, int cmd)
{
int err;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
err = line6_pcm_acquire(line6pcm,
LINE6_BIT_PCM_ALSA_PLAYBACK_STREAM);
if (err < 0)
return err;
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
err = line6_pcm_release(line6pcm,
LINE6_BIT_PCM_ALSA_PLAYBACK_STREAM);
if (err < 0)
return err;
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
set_bit(LINE6_INDEX_PAUSE_PLAYBACK, &line6pcm->flags);
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
clear_bit(LINE6_INDEX_PAUSE_PLAYBACK, &line6pcm->flags);
break;
default:
return -EINVAL;
}
return 0;
}
/* playback pointer callback */
static snd_pcm_uframes_t
snd_line6_playback_pointer(struct snd_pcm_substream *substream)
{
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
return line6pcm->pos_out_done;
}
/* playback operators */
struct snd_pcm_ops snd_line6_playback_ops = {
.open = snd_line6_playback_open,
.close = snd_line6_playback_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_line6_playback_hw_params,
.hw_free = snd_line6_playback_hw_free,
.hw_params = snd_line6_hw_params,
.hw_free = snd_line6_hw_free,
.prepare = snd_line6_prepare,
.trigger = snd_line6_trigger,
.pointer = snd_line6_playback_pointer,
.pointer = snd_line6_pointer,
};
int line6_create_audio_out_urbs(struct snd_line6_pcm *line6pcm)
......@@ -554,7 +402,7 @@ int line6_create_audio_out_urbs(struct snd_line6_pcm *line6pcm)
struct urb *urb;
/* URB for audio out: */
urb = line6pcm->urb_audio_out[i] =
urb = line6pcm->out.urbs[i] =
usb_alloc_urb(LINE6_ISO_PACKETS, GFP_KERNEL);
if (urb == NULL)
......
sound/usb/line6/playback.h
浏览文件 @ 5e0ddd07
......@@ -30,12 +30,6 @@
extern struct snd_pcm_ops snd_line6_playback_ops;
extern int line6_create_audio_out_urbs(struct snd_line6_pcm *line6pcm);
extern void line6_free_playback_buffer(struct snd_line6_pcm *line6pcm);
extern int line6_submit_audio_out_all_urbs(struct snd_line6_pcm *line6pcm);
extern void line6_unlink_audio_out_urbs(struct snd_line6_pcm *line6pcm);
extern void line6_unlink_wait_clear_audio_out_urbs(struct snd_line6_pcm
*line6pcm);
extern void line6_wait_clear_audio_out_urbs(struct snd_line6_pcm *line6pcm);
extern int snd_line6_playback_trigger(struct snd_line6_pcm *line6pcm, int cmd);
#endif
sound/usb/line6/pod.c
浏览文件 @ 5e0ddd07
......@@ -399,27 +399,18 @@ static struct snd_kcontrol_new pod_control_monitor = {
/*
POD device disconnected.
*/
static void line6_pod_disconnect(struct usb_interface *interface)
static void line6_pod_disconnect(struct usb_line6 *line6)
{
struct usb_line6_pod *pod;
struct usb_line6_pod *pod = (struct usb_line6_pod *)line6;
struct device *dev = line6->ifcdev;
if (interface == NULL)
return;
pod = usb_get_intfdata(interface);
if (pod != NULL) {
struct device *dev = &interface->dev;
if (dev != NULL) {
/* remove sysfs entries: */
device_remove_file(dev, &dev_attr_device_id);
device_remove_file(dev, &dev_attr_firmware_version);
device_remove_file(dev, &dev_attr_serial_number);
}
/* remove sysfs entries: */
device_remove_file(dev, &dev_attr_device_id);
device_remove_file(dev, &dev_attr_firmware_version);
device_remove_file(dev, &dev_attr_serial_number);
del_timer_sync(&pod->startup_timer);
cancel_work_sync(&pod->startup_work);
}
del_timer_sync(&pod->startup_timer);
cancel_work_sync(&pod->startup_work);
}
/*
......@@ -444,8 +435,8 @@ static int pod_create_files2(struct device *dev)
/*
Try to init POD device.
*/
static int pod_init(struct usb_interface *interface,
struct usb_line6 *line6)
static int pod_init(struct usb_line6 *line6,
const struct usb_device_id *id)
{
int err;
struct usb_line6_pod *pod = (struct usb_line6_pod *) line6;
......@@ -456,11 +447,8 @@ static int pod_init(struct usb_interface *interface,
init_timer(&pod->startup_timer);
INIT_WORK(&pod->startup_work, pod_startup4);
if ((interface == NULL) || (pod == NULL))
return -ENODEV;
/* create sysfs entries: */
err = pod_create_files2(&interface->dev);
err = pod_create_files2(line6->ifcdev);
if (err < 0)
return err;
......@@ -603,14 +591,9 @@ static const struct line6_properties pod_properties_table[] = {
static int pod_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
struct usb_line6_pod *pod;
pod = kzalloc(sizeof(*pod), GFP_KERNEL);
if (!pod)
return -ENODEV;
return line6_probe(interface, &pod->line6,
return line6_probe(interface, id,
&pod_properties_table[id->driver_info],
pod_init);
pod_init, sizeof(struct usb_line6_pod));
}
static struct usb_driver pod_driver = {
......
sound/usb/line6/podhd.c
浏览文件 @ 5e0ddd07
......@@ -87,15 +87,11 @@ static struct line6_pcm_properties podhd_pcm_properties = {
/*
Try to init POD HD device.
*/
static int podhd_init(struct usb_interface *interface,
struct usb_line6 *line6)
static int podhd_init(struct usb_line6 *line6,
const struct usb_device_id *id)
{
struct usb_line6_podhd *podhd = (struct usb_line6_podhd *) line6;
int err;
if ((interface == NULL) || (podhd == NULL))
return -ENODEV;
/* initialize MIDI subsystem: */
err = line6_init_midi(line6);
if (err < 0)
......@@ -181,14 +177,9 @@ static const struct line6_properties podhd_properties_table[] = {
static int podhd_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
struct usb_line6_podhd *podhd;
podhd = kzalloc(sizeof(*podhd), GFP_KERNEL);
if (!podhd)
return -ENODEV;
return line6_probe(interface, &podhd->line6,
return line6_probe(interface, id,
&podhd_properties_table[id->driver_info],
podhd_init);
podhd_init, sizeof(struct usb_line6_podhd));
}
static struct usb_driver podhd_driver = {
......
sound/usb/line6/toneport.c
浏览文件 @ 5e0ddd07
......@@ -14,6 +14,7 @@
#include <linux/usb.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/leds.h>
#include <sound/core.h>
#include <sound/control.h>
......@@ -32,6 +33,15 @@ enum line6_device_type {
LINE6_TONEPORT_UX2,
};
struct usb_line6_toneport;
struct toneport_led {
struct led_classdev dev;
char name[64];
struct usb_line6_toneport *toneport;
bool registered;
};
struct usb_line6_toneport {
/**
Generic Line 6 USB data.
......@@ -62,6 +72,9 @@ struct usb_line6_toneport {
Device type.
*/
enum line6_device_type type;
/* LED instances */
struct toneport_led leds[2];
};
static int toneport_send_cmd(struct usb_device *usbdev, int cmd1, int cmd2);
......@@ -117,15 +130,6 @@ static struct line6_pcm_properties toneport_pcm_properties = {
.bytes_per_frame = 4
};
/*
For the led on Guitarport.
Brightness goes from 0x00 to 0x26. Set a value above this to have led
blink.
(void cmd_0x02(byte red, byte green)
*/
static int led_red = 0x00;
static int led_green = 0x26;
static const struct {
const char *name;
int code;
......@@ -136,62 +140,6 @@ static const struct {
{"Inst & Mic", 0x0901}
};
static bool toneport_has_led(enum line6_device_type type)
{
return
(type == LINE6_GUITARPORT) ||
(type == LINE6_TONEPORT_GX);
/* add your device here if you are missing support for the LEDs */
}
static void toneport_update_led(struct device *dev)
{
struct usb_interface *interface = to_usb_interface(dev);
struct usb_line6_toneport *tp = usb_get_intfdata(interface);
struct usb_line6 *line6;
if (!tp)
return;
line6 = &tp->line6;
if (line6)
toneport_send_cmd(line6->usbdev, (led_red << 8) | 0x0002,
led_green);
}
static ssize_t toneport_set_led_red(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int retval;
retval = kstrtoint(buf, 10, &led_red);
if (retval)
return retval;
toneport_update_led(dev);
return count;
}
static ssize_t toneport_set_led_green(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int retval;
retval = kstrtoint(buf, 10, &led_green);
if (retval)
return retval;
toneport_update_led(dev);
return count;
}
static DEVICE_ATTR(led_red, S_IWUSR | S_IRUGO, line6_nop_read,
toneport_set_led_red);
static DEVICE_ATTR(led_green, S_IWUSR | S_IRUGO, line6_nop_read,
toneport_set_led_green);
static int toneport_send_cmd(struct usb_device *usbdev, int cmd1, int cmd2)
{
int ret;
......@@ -234,16 +182,23 @@ static int snd_toneport_monitor_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
int err;
if (ucontrol->value.integer.value[0] == line6pcm->volume_monitor)
return 0;
line6pcm->volume_monitor = ucontrol->value.integer.value[0];
if (line6pcm->volume_monitor > 0)
line6_pcm_acquire(line6pcm, LINE6_BITS_PCM_MONITOR);
else
line6_pcm_release(line6pcm, LINE6_BITS_PCM_MONITOR);
if (line6pcm->volume_monitor > 0) {
err = line6_pcm_acquire(line6pcm, LINE6_STREAM_MONITOR);
if (err < 0) {
line6pcm->volume_monitor = 0;
line6_pcm_release(line6pcm, LINE6_STREAM_MONITOR);
return err;
}
} else {
line6_pcm_release(line6pcm, LINE6_STREAM_MONITOR);
}
return 1;
}
......@@ -304,7 +259,7 @@ static void toneport_start_pcm(unsigned long arg)
struct usb_line6_toneport *toneport = (struct usb_line6_toneport *)arg;
struct usb_line6 *line6 = &toneport->line6;
line6_pcm_acquire(line6->line6pcm, LINE6_BITS_PCM_MONITOR);
line6_pcm_acquire(line6->line6pcm, LINE6_STREAM_MONITOR);
}
/* control definition */
......@@ -329,6 +284,78 @@ static struct snd_kcontrol_new toneport_control_source = {
.put = snd_toneport_source_put
};
/*
For the led on Guitarport.
Brightness goes from 0x00 to 0x26. Set a value above this to have led
blink.
(void cmd_0x02(byte red, byte green)
*/
static bool toneport_has_led(enum line6_device_type type)
{
return
(type == LINE6_GUITARPORT) ||
(type == LINE6_TONEPORT_GX);
/* add your device here if you are missing support for the LEDs */
}
static const char * const led_colors[2] = { "red", "green" };
static const int led_init_vals[2] = { 0x00, 0x26 };
static void toneport_update_led(struct usb_line6_toneport *toneport)
{
toneport_send_cmd(toneport->line6.usbdev,
(toneport->leds[0].dev.brightness << 8) | 0x0002,
toneport->leds[1].dev.brightness);
}
static void toneport_led_brightness_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
struct toneport_led *leds =
container_of(led_cdev, struct toneport_led, dev);
toneport_update_led(leds->toneport);
}
static int toneport_init_leds(struct usb_line6_toneport *toneport)
{
struct device *dev = &toneport->line6.usbdev->dev;
int i, err;
for (i = 0; i < 2; i++) {
struct toneport_led *led = &toneport->leds[i];
struct led_classdev *leddev = &led->dev;
led->toneport = toneport;
snprintf(led->name, sizeof(led->name), "%s::%s",
dev_name(dev), led_colors[i]);
leddev->name = led->name;
leddev->brightness = led_init_vals[i];
leddev->max_brightness = 0x26;
leddev->brightness_set = toneport_led_brightness_set;
err = led_classdev_register(dev, leddev);
if (err)
return err;
led->registered = true;
}
return 0;
}
static void toneport_remove_leds(struct usb_line6_toneport *toneport)
{
struct toneport_led *led;
int i;
for (i = 0; i < 2; i++) {
led = &toneport->leds[i];
if (!led->registered)
break;
led_classdev_unregister(&led->dev);
led->registered = false;
}
}
/*
Setup Toneport device.
*/
......@@ -359,42 +386,38 @@ static void toneport_setup(struct usb_line6_toneport *toneport)
}
if (toneport_has_led(toneport->type))
toneport_update_led(&usbdev->dev);
toneport_update_led(toneport);
mod_timer(&toneport->timer, jiffies + TONEPORT_PCM_DELAY * HZ);
}
/*
Toneport device disconnected.
*/
static void line6_toneport_disconnect(struct usb_interface *interface)
static void line6_toneport_disconnect(struct usb_line6 *line6)
{
struct usb_line6_toneport *toneport;
u16 idProduct;
if (interface == NULL)
return;
struct usb_line6_toneport *toneport =
(struct usb_line6_toneport *)line6;
toneport = usb_get_intfdata(interface);
del_timer_sync(&toneport->timer);
idProduct = le16_to_cpu(toneport->line6.usbdev->descriptor.idProduct);
if (toneport_has_led(idProduct)) {
device_remove_file(&interface->dev, &dev_attr_led_red);
device_remove_file(&interface->dev, &dev_attr_led_green);
}
if (toneport_has_led(toneport->type))
toneport_remove_leds(toneport);
}
/*
Try to init Toneport device.
*/
static int toneport_init(struct usb_interface *interface,
struct usb_line6 *line6)
static int toneport_init(struct usb_line6 *line6,
const struct usb_device_id *id)
{
int err;
struct usb_line6_toneport *toneport = (struct usb_line6_toneport *) line6;
if ((interface == NULL) || (toneport == NULL))
return -ENODEV;
toneport->type = id->driver_info;
setup_timer(&toneport->timer, toneport_start_pcm,
(unsigned long)toneport);
line6->disconnect = line6_toneport_disconnect;
......@@ -431,20 +454,13 @@ static int toneport_init(struct usb_interface *interface,
line6_read_data(line6, 0x80c2, &toneport->firmware_version, 1);
if (toneport_has_led(toneport->type)) {
err = device_create_file(&interface->dev, &dev_attr_led_red);
if (err < 0)
return err;
err = device_create_file(&interface->dev, &dev_attr_led_green);
err = toneport_init_leds(toneport);
if (err < 0)
return err;
}
toneport_setup(toneport);
setup_timer(&toneport->timer, toneport_start_pcm,
(unsigned long)toneport);
mod_timer(&toneport->timer, jiffies + TONEPORT_PCM_DELAY * HZ);
/* register audio system: */
return snd_card_register(line6->card);
}
......@@ -549,15 +565,9 @@ static const struct line6_properties toneport_properties_table[] = {
static int toneport_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
struct usb_line6_toneport *toneport;
toneport = kzalloc(sizeof(*toneport), GFP_KERNEL);
if (!toneport)
return -ENODEV;
toneport->type = id->driver_info;
return line6_probe(interface, &toneport->line6,
return line6_probe(interface, id,
&toneport_properties_table[id->driver_info],
toneport_init);
toneport_init, sizeof(struct usb_line6_toneport));
}
static struct usb_driver toneport_driver = {
......
sound/usb/line6/variax.c
浏览文件 @ 5e0ddd07
......@@ -210,16 +210,9 @@ static void line6_variax_process_message(struct usb_line6 *line6)
/*
Variax destructor.
*/
static void line6_variax_disconnect(struct usb_interface *interface)
static void line6_variax_disconnect(struct usb_line6 *line6)
{
struct usb_line6_variax *variax;
if (!interface)
return;
variax = usb_get_intfdata(interface);
if (!variax)
return;
struct usb_line6_variax *variax = (struct usb_line6_variax *)line6;
del_timer(&variax->startup_timer1);
del_timer(&variax->startup_timer2);
......@@ -231,8 +224,8 @@ static void line6_variax_disconnect(struct usb_interface *interface)
/*
Try to init workbench device.
*/
static int variax_init(struct usb_interface *interface,
struct usb_line6 *line6)
static int variax_init(struct usb_line6 *line6,
const struct usb_device_id *id)
{
struct usb_line6_variax *variax = (struct usb_line6_variax *) line6;
int err;
......@@ -244,9 +237,6 @@ static int variax_init(struct usb_interface *interface,
init_timer(&variax->startup_timer2);
INIT_WORK(&variax->startup_work, variax_startup6);
if ((interface == NULL) || (variax == NULL))
return -ENODEV;
/* initialize USB buffers: */
variax->buffer_activate = kmemdup(variax_activate,
sizeof(variax_activate), GFP_KERNEL);
......@@ -306,14 +296,9 @@ static const struct line6_properties variax_properties_table[] = {
static int variax_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
struct usb_line6_variax *variax;
variax = kzalloc(sizeof(*variax), GFP_KERNEL);
if (!variax)
return -ENODEV;
return line6_probe(interface, &variax->line6,
return line6_probe(interface, id,
&variax_properties_table[id->driver_info],
variax_init);
variax_init, sizeof(struct usb_line6_variax));
}
static struct usb_driver variax_driver = {
......
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