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-rw-r--r--drivers/staging/line6/midi.c102
1 files changed, 59 insertions, 43 deletions
diff --git a/drivers/staging/line6/midi.c b/drivers/staging/line6/midi.c
index f72681963e44..89a2b17e9caf 100644
--- a/drivers/staging/line6/midi.c
+++ b/drivers/staging/line6/midi.c
@@ -26,19 +26,23 @@
#define OUTPUT_DUMP_ONLY 0
-#define line6_rawmidi_substream_midi(substream) ((struct snd_line6_midi *)((substream)->rmidi->private_data))
+#define line6_rawmidi_substream_midi(substream) \
+ ((struct snd_line6_midi *)((substream)->rmidi->private_data))
-static int send_midi_async(struct usb_line6 *line6, unsigned char *data, int length);
+static int send_midi_async(struct usb_line6 *line6, unsigned char *data,
+ int length);
/*
Pass data received via USB to MIDI.
*/
-void line6_midi_receive(struct usb_line6 *line6, unsigned char *data, int length)
+void line6_midi_receive(struct usb_line6 *line6, unsigned char *data,
+ int length)
{
- if(line6->line6midi->substream_receive)
- snd_rawmidi_receive(line6->line6midi->substream_receive, data, length);
+ if (line6->line6midi->substream_receive)
+ snd_rawmidi_receive(line6->line6midi->substream_receive,
+ data, length);
}
/*
@@ -55,11 +59,11 @@ static void line6_midi_transmit(struct snd_rawmidi_substream *substream)
spin_lock_irqsave(&line6->line6midi->midi_transmit_lock, flags);
- for(;;) {
+ for (;;) {
req = min(midibuf_bytes_free(mb), line6->max_packet_size);
done = snd_rawmidi_transmit_peek(substream, chunk, req);
- if(done == 0)
+ if (done == 0)
break;
#if DO_DUMP_MIDI_SEND
@@ -69,13 +73,13 @@ static void line6_midi_transmit(struct snd_rawmidi_substream *substream)
snd_rawmidi_transmit_ack(substream, done);
}
- for(;;) {
+ for (;;) {
done = midibuf_read(mb, chunk, line6->max_packet_size);
- if(done == 0)
+ if (done == 0)
break;
- if(midibuf_skip_message(mb, line6midi->midi_mask_transmit))
+ if (midibuf_skip_message(mb, line6midi->midi_mask_transmit))
continue;
send_midi_async(line6, chunk, done);
@@ -98,18 +102,18 @@ static void midi_sent(struct urb *urb)
kfree(urb->transfer_buffer);
usb_free_urb(urb);
- if(status == -ESHUTDOWN)
+ if (status == -ESHUTDOWN)
return;
spin_lock_irqsave(&line6->line6midi->send_urb_lock, flags);
num = --line6->line6midi->num_active_send_urbs;
- if(num == 0) {
+ if (num == 0) {
line6_midi_transmit(line6->line6midi->substream_transmit);
num = line6->line6midi->num_active_send_urbs;
}
- if(num == 0)
+ if (num == 0)
wake_up_interruptible(&line6->line6midi->send_wait);
spin_unlock_irqrestore(&line6->line6midi->send_urb_lock, flags);
@@ -120,7 +124,8 @@ static void midi_sent(struct urb *urb)
Assumes that line6->line6midi->send_urb_lock is held
(i.e., this function is serialized).
*/
-static int send_midi_async(struct usb_line6 *line6, unsigned char *data, int length)
+static int send_midi_async(struct usb_line6 *line6, unsigned char *data,
+ int length)
{
struct urb *urb;
int retval;
@@ -128,7 +133,7 @@ static int send_midi_async(struct usb_line6 *line6, unsigned char *data, int len
urb = usb_alloc_urb(0, GFP_ATOMIC);
- if(urb == 0) {
+ if (urb == 0) {
dev_err(line6->ifcdev, "Out of memory\n");
return -ENOMEM;
}
@@ -137,23 +142,24 @@ static int send_midi_async(struct usb_line6 *line6, unsigned char *data, int len
line6_write_hexdump(line6, 'S', data, length);
#endif
- transfer_buffer = (unsigned char *)kmalloc(length, GFP_ATOMIC);
+ transfer_buffer = kmalloc(length, GFP_ATOMIC);
- if(transfer_buffer == 0) {
+ if (transfer_buffer == 0) {
usb_free_urb(urb);
dev_err(line6->ifcdev, "Out of memory\n");
return -ENOMEM;
}
memcpy(transfer_buffer, data, length);
- usb_fill_int_urb(urb,
- line6->usbdev,
- usb_sndbulkpipe(line6->usbdev, line6->ep_control_write),
- transfer_buffer, length, midi_sent, line6, line6->interval);
+ usb_fill_int_urb(urb, line6->usbdev,
+ usb_sndbulkpipe(line6->usbdev,
+ line6->ep_control_write),
+ transfer_buffer, length, midi_sent, line6,
+ line6->interval);
urb->actual_length = 0;
retval = usb_submit_urb(urb, GFP_ATOMIC);
- if(retval < 0) {
+ if (retval < 0) {
dev_err(line6->ifcdev, "usb_submit_urb failed\n");
usb_free_urb(urb);
return -EINVAL;
@@ -161,7 +167,7 @@ static int send_midi_async(struct usb_line6 *line6, unsigned char *data, int len
++line6->line6midi->num_active_send_urbs;
- switch(line6->usbdev->descriptor.idProduct) {
+ switch (line6->usbdev->descriptor.idProduct) {
case LINE6_DEVID_BASSPODXT:
case LINE6_DEVID_BASSPODXTLIVE:
case LINE6_DEVID_BASSPODXTPRO:
@@ -169,7 +175,8 @@ static int send_midi_async(struct usb_line6 *line6, unsigned char *data, int len
case LINE6_DEVID_PODXTLIVE:
case LINE6_DEVID_PODXTPRO:
case LINE6_DEVID_POCKETPOD:
- pod_midi_postprocess((struct usb_line6_pod *)line6, data, length);
+ pod_midi_postprocess((struct usb_line6_pod *)line6, data,
+ length);
break;
default:
@@ -189,7 +196,8 @@ static int line6_midi_output_close(struct snd_rawmidi_substream *substream)
return 0;
}
-static void line6_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
+static void line6_midi_output_trigger(struct snd_rawmidi_substream *substream,
+ int up)
{
unsigned long flags;
struct usb_line6 *line6 = line6_rawmidi_substream_midi(substream)->line6;
@@ -197,7 +205,7 @@ static void line6_midi_output_trigger(struct snd_rawmidi_substream *substream, i
line6->line6midi->substream_transmit = substream;
spin_lock_irqsave(&line6->line6midi->send_urb_lock, flags);
- if(line6->line6midi->num_active_send_urbs == 0)
+ if (line6->line6midi->num_active_send_urbs == 0)
line6_midi_transmit(substream);
spin_unlock_irqrestore(&line6->line6midi->send_urb_lock, flags);
@@ -211,8 +219,8 @@ static void line6_midi_output_drain(struct snd_rawmidi_substream *substream)
add_wait_queue(head, &wait);
current->state = TASK_INTERRUPTIBLE;
- while(line6->line6midi->num_active_send_urbs > 0)
- if(signal_pending(current))
+ while (line6->line6midi->num_active_send_urbs > 0)
+ if (signal_pending(current))
break;
else
schedule();
@@ -231,11 +239,12 @@ static int line6_midi_input_close(struct snd_rawmidi_substream *substream)
return 0;
}
-static void line6_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
+static void line6_midi_input_trigger(struct snd_rawmidi_substream *substream,
+ int up)
{
struct usb_line6 *line6 = line6_rawmidi_substream_midi(substream)->line6;
- if(up)
+ if (up)
line6->line6midi->substream_receive = substream;
else
line6->line6midi->substream_receive = 0;
@@ -267,7 +276,9 @@ static int snd_line6_new_midi(struct snd_line6_midi *line6midi)
struct snd_rawmidi *rmidi;
int err;
- if((err = snd_rawmidi_new(line6midi->line6->card, "Line6 MIDI", 0, 1, 1, &rmidi)) < 0)
+ err = snd_rawmidi_new(line6midi->line6->card, "Line6 MIDI", 0, 1, 1,
+ &rmidi);
+ if (err < 0)
return err;
rmidi->private_data = line6midi;
@@ -279,8 +290,10 @@ static int snd_line6_new_midi(struct snd_line6_midi *line6midi)
SNDRV_RAWMIDI_INFO_INPUT |
SNDRV_RAWMIDI_INFO_DUPLEX;
- snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &line6_midi_output_ops);
- snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &line6_midi_input_ops);
+ snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
+ &line6_midi_output_ops);
+ snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
+ &line6_midi_input_ops);
return 0;
}
@@ -362,22 +375,20 @@ int line6_init_midi(struct usb_line6 *line6)
int err;
struct snd_line6_midi *line6midi;
- if(!(line6->properties->capabilities & LINE6_BIT_CONTROL))
+ if (!(line6->properties->capabilities & LINE6_BIT_CONTROL))
return 0; /* skip MIDI initialization and report success */
line6midi = kzalloc(sizeof(struct snd_line6_midi), GFP_KERNEL);
- if(line6midi == NULL)
+ if (line6midi == NULL)
return -ENOMEM;
err = midibuf_init(&line6midi->midibuf_in, MIDI_BUFFER_SIZE, 0);
-
- if(err < 0)
+ if (err < 0)
return err;
err = midibuf_init(&line6midi->midibuf_out, MIDI_BUFFER_SIZE, 1);
-
- if(err < 0)
+ if (err < 0)
return err;
line6midi->line6 = line6;
@@ -385,18 +396,23 @@ int line6_init_midi(struct usb_line6 *line6)
line6midi->midi_mask_receive = 4;
line6->line6midi = line6midi;
- if((err = snd_device_new(line6->card, SNDRV_DEV_RAWMIDI, line6midi, &midi_ops)) < 0)
+ err = snd_device_new(line6->card, SNDRV_DEV_RAWMIDI, line6midi,
+ &midi_ops);
+ if (err < 0)
return err;
snd_card_set_dev(line6->card, line6->ifcdev);
- if((err = snd_line6_new_midi(line6midi)) < 0)
+ err = snd_line6_new_midi(line6midi);
+ if (err < 0)
return err;
- if((err = device_create_file(line6->ifcdev, &dev_attr_midi_mask_transmit)) < 0)
+ err = device_create_file(line6->ifcdev, &dev_attr_midi_mask_transmit);
+ if (err < 0)
return err;
- if((err = device_create_file(line6->ifcdev, &dev_attr_midi_mask_receive)) < 0)
+ err = device_create_file(line6->ifcdev, &dev_attr_midi_mask_receive);
+ if (err < 0)
return err;
init_waitqueue_head(&line6midi->send_wait);
generated by cgit (git 2.34.1) at 2025-10-31 16:20:19 +0000