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-rw-r--r--drivers/staging/line6/playback.c95
1 files changed, 61 insertions, 34 deletions
diff --git a/drivers/staging/line6/playback.c b/drivers/staging/line6/playback.c
index acb0612..4192cd9 100644
--- a/drivers/staging/line6/playback.c
+++ b/drivers/staging/line6/playback.c
@@ -20,7 +20,6 @@
#include "pod.h"
#include "playback.h"
-
/*
Software stereo volume control.
*/
@@ -30,7 +29,7 @@ static void change_volume(struct urb *urb_out, int volume[],
int chn = 0;
if (volume[0] == 256 && volume[1] == 256)
- return; /* maximum volume - no change */
+ return; /* maximum volume - no change */
if (bytes_per_frame == 4) {
short *p, *buf_end;
@@ -68,13 +67,17 @@ static int submit_audio_out_urb(struct snd_pcm_substream *substream)
int i, urb_size, urb_frames;
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
const int bytes_per_frame = line6pcm->properties->bytes_per_frame;
- const int frame_increment = line6pcm->properties->snd_line6_rates.rats[0].num_min;
- const int frame_factor = line6pcm->properties->snd_line6_rates.rats[0].den * (USB_INTERVALS_PER_SECOND / LINE6_ISO_INTERVAL);
+ const int frame_increment =
+ line6pcm->properties->snd_line6_rates.rats[0].num_min;
+ const int frame_factor =
+ line6pcm->properties->snd_line6_rates.rats[0].den *
+ (USB_INTERVALS_PER_SECOND / LINE6_ISO_INTERVAL);
struct snd_pcm_runtime *runtime = substream->runtime;
struct urb *urb_out;
spin_lock_irqsave(&line6pcm->lock_audio_out, flags);
- index = find_first_zero_bit(&line6pcm->active_urb_out, LINE6_ISO_BUFFERS);
+ index =
+ find_first_zero_bit(&line6pcm->active_urb_out, LINE6_ISO_BUFFERS);
if (index < 0 || index >= LINE6_ISO_BUFFERS) {
spin_unlock_irqrestore(&line6pcm->lock_audio_out, flags);
@@ -88,7 +91,8 @@ static int submit_audio_out_urb(struct snd_pcm_substream *substream)
for (i = 0; i < LINE6_ISO_PACKETS; ++i) {
/* compute frame size for given sampling rate */
int n, fs;
- struct usb_iso_packet_descriptor *fout = &urb_out->iso_frame_desc[i];
+ struct usb_iso_packet_descriptor *fout =
+ &urb_out->iso_frame_desc[i];
line6pcm->count_out += frame_increment;
n = line6pcm->count_out / frame_factor;
line6pcm->count_out -= n * frame_factor;
@@ -106,21 +110,31 @@ static int submit_audio_out_urb(struct snd_pcm_substream *substream)
} else {
if (line6pcm->pos_out + urb_frames > runtime->buffer_size) {
/*
- The transferred area goes over buffer boundary,
- copy the data to the temp buffer.
- */
+ The transferred area goes over buffer boundary,
+ copy the data to the temp buffer.
+ */
int len;
len = runtime->buffer_size - line6pcm->pos_out;
urb_out->transfer_buffer = line6pcm->wrap_out;
if (len > 0) {
- memcpy(line6pcm->wrap_out, runtime->dma_area + line6pcm->pos_out * bytes_per_frame, len * bytes_per_frame);
- memcpy(line6pcm->wrap_out + len * bytes_per_frame, runtime->dma_area, (urb_frames - len) * bytes_per_frame);
- } else
- dev_err(s2m(substream), "driver bug: len = %d\n", len); /* this is somewhat paranoid */
+ memcpy(line6pcm->wrap_out,
+ runtime->dma_area +
+ line6pcm->pos_out * bytes_per_frame,
+ len * bytes_per_frame);
+ memcpy(line6pcm->wrap_out +
+ len * bytes_per_frame, runtime->dma_area,
+ (urb_frames - len) * bytes_per_frame);
+ } else {
+ /* this is somewhat paranoid */
+ dev_err(s2m(substream),
+ "driver bug: len = %d\n", len);
+ }
} else {
/* set the buffer pointer */
- urb_out->transfer_buffer = runtime->dma_area + line6pcm->pos_out * bytes_per_frame;
+ urb_out->transfer_buffer =
+ runtime->dma_area +
+ line6pcm->pos_out * bytes_per_frame;
}
}
@@ -133,15 +147,19 @@ static int submit_audio_out_urb(struct snd_pcm_substream *substream)
#if DO_DUMP_PCM_SEND
for (i = 0; i < LINE6_ISO_PACKETS; ++i) {
- struct usb_iso_packet_descriptor *fout = &urb_out->iso_frame_desc[i];
- line6_write_hexdump(line6pcm->line6, 'P', urb_out->transfer_buffer + fout->offset, fout->length);
+ struct usb_iso_packet_descriptor *fout =
+ &urb_out->iso_frame_desc[i];
+ line6_write_hexdump(line6pcm->line6, 'P',
+ urb_out->transfer_buffer + fout->offset,
+ fout->length);
}
#endif
if (usb_submit_urb(urb_out, GFP_ATOMIC) == 0)
set_bit(index, &line6pcm->active_urb_out);
else
- dev_err(s2m(substream), "URB out #%d submission failed\n", index);
+ dev_err(s2m(substream), "URB out #%d submission failed\n",
+ index);
spin_unlock_irqrestore(&line6pcm->lock_audio_out, flags);
return 0;
@@ -181,7 +199,7 @@ static void unlink_audio_out_urbs(struct snd_line6_pcm *line6pcm)
}
/*
- Wait until unlinking of all currently active playback URBs has been finished.
+ Wait until unlinking of all currently active playback URBs has been finished.
*/
static void wait_clear_audio_out_urbs(struct snd_line6_pcm *line6pcm)
{
@@ -224,7 +242,8 @@ static void audio_out_callback(struct urb *urb)
int i, index, length = 0, shutdown = 0;
unsigned long flags;
- struct snd_pcm_substream *substream = (struct snd_pcm_substream *)urb->context;
+ struct snd_pcm_substream *substream =
+ (struct snd_pcm_substream *)urb->context;
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
@@ -234,13 +253,14 @@ static void audio_out_callback(struct urb *urb)
break;
if (index < 0)
- return; /* URB has been unlinked asynchronously */
+ return; /* URB has been unlinked asynchronously */
for (i = LINE6_ISO_PACKETS; i--;)
length += urb->iso_frame_desc[i].length;
spin_lock_irqsave(&line6pcm->lock_audio_out, flags);
- line6pcm->pos_out_done += length / line6pcm->properties->bytes_per_frame;
+ line6pcm->pos_out_done +=
+ length / line6pcm->properties->bytes_per_frame;
if (line6pcm->pos_out_done >= runtime->buffer_size)
line6pcm->pos_out_done -= runtime->buffer_size;
@@ -276,7 +296,8 @@ static int snd_line6_playback_open(struct snd_pcm_substream *substream)
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
err = snd_pcm_hw_constraint_ratdens(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
- (&line6pcm->properties->snd_line6_rates));
+ (&line6pcm->properties->
+ snd_line6_rates));
if (err < 0)
return err;
@@ -291,7 +312,8 @@ static int snd_line6_playback_close(struct snd_pcm_substream *substream)
}
/* hw_params playback callback */
-static int snd_line6_playback_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params)
+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);
@@ -349,7 +371,8 @@ int snd_line6_playback_trigger(struct snd_pcm_substream *substream, int cmd)
err = submit_audio_out_all_urbs(substream);
if (err < 0) {
- clear_bit(BIT_RUNNING_PLAYBACK, &line6pcm->flags);
+ clear_bit(BIT_RUNNING_PLAYBACK,
+ &line6pcm->flags);
return err;
}
}
@@ -387,14 +410,14 @@ snd_line6_playback_pointer(struct snd_pcm_substream *substream)
/* 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,
- .prepare = snd_line6_prepare,
- .trigger = snd_line6_trigger,
- .pointer = snd_line6_playback_pointer,
+ .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,
+ .prepare = snd_line6_prepare,
+ .trigger = snd_line6_trigger,
+ .pointer = snd_line6_playback_pointer,
};
int create_audio_out_urbs(struct snd_line6_pcm *line6pcm)
@@ -406,7 +429,8 @@ int create_audio_out_urbs(struct snd_line6_pcm *line6pcm)
struct urb *urb;
/* URB for audio out: */
- urb = line6pcm->urb_audio_out[i] = usb_alloc_urb(LINE6_ISO_PACKETS, GFP_KERNEL);
+ urb = line6pcm->urb_audio_out[i] =
+ usb_alloc_urb(LINE6_ISO_PACKETS, GFP_KERNEL);
if (urb == NULL) {
dev_err(line6pcm->line6->ifcdev, "Out of memory\n");
@@ -414,7 +438,10 @@ int create_audio_out_urbs(struct snd_line6_pcm *line6pcm)
}
urb->dev = line6pcm->line6->usbdev;
- urb->pipe = usb_sndisocpipe(line6pcm->line6->usbdev, line6pcm->ep_audio_write & USB_ENDPOINT_NUMBER_MASK);
+ urb->pipe =
+ usb_sndisocpipe(line6pcm->line6->usbdev,
+ line6pcm->
+ ep_audio_write & USB_ENDPOINT_NUMBER_MASK);
urb->transfer_flags = URB_ISO_ASAP;
urb->start_frame = -1;
urb->number_of_packets = LINE6_ISO_PACKETS;
generated by cgit v0.10.2 at 2024-10-30 18:00:45 (GMT)