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/*
* Line6 Linux USB driver - 0.8.0
*
* Copyright (C) 2004-2009 Markus Grabner (grabner@icg.tugraz.at)
*
* 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, version 2.
*
*/
#include "driver.h"
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include "audio.h"
#include "capture.h"
#include "playback.h"
#include "pod.h"
/* 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;
unsigned long flags;
spin_lock_irqsave(&line6pcm->lock_trigger, flags);
clear_bit(BIT_PREPARED, &line6pcm->flags);
snd_pcm_group_for_each_entry(s, substream) {
switch(s->stream) {
case SNDRV_PCM_STREAM_PLAYBACK:
err = snd_line6_playback_trigger(s, cmd);
if(err < 0) {
spin_unlock_irqrestore(&line6pcm->lock_trigger, flags);
return err;
}
break;
case SNDRV_PCM_STREAM_CAPTURE:
err = snd_line6_capture_trigger(s, cmd);
if(err < 0) {
spin_unlock_irqrestore(&line6pcm->lock_trigger, flags);
return err;
}
break;
default:
dev_err(s2m(substream), "Unknown stream direction %d\n", s->stream);
}
}
spin_unlock_irqrestore(&line6pcm->lock_trigger, flags);
return 0;
}
/* control info callback */
static int snd_line6_control_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) {
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 2;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = 256;
return 0;
}
/* control get callback */
static int snd_line6_control_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) {
int i;
struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
for(i = 2; i--;)
ucontrol->value.integer.value[i] = line6pcm->volume[i];
return 0;
}
/* control put callback */
static int snd_line6_control_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) {
int i, changed = 0;
struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
for(i = 2; i--;)
if(line6pcm->volume[i] != ucontrol->value.integer.value[i]) {
line6pcm->volume[i] = ucontrol->value.integer.value[i];
changed = 1;
}
return changed;
}
/* control definition */
static struct snd_kcontrol_new line6_control = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "PCM Playback Volume",
.index = 0,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
.info = snd_line6_control_info,
.get = snd_line6_control_get,
.put = snd_line6_control_put
};
/*
Cleanup the PCM device.
*/
static void line6_cleanup_pcm(struct snd_pcm *pcm)
{
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]);
}
}
}
/* create a PCM device */
static int snd_line6_new_pcm(struct snd_line6_pcm *line6pcm)
{
struct snd_pcm *pcm;
int err;
if((err = snd_pcm_new(line6pcm->line6->card, (char *)line6pcm->line6->properties->name, 0, 1, 1, &pcm)) < 0)
return err;
pcm->private_data = line6pcm;
pcm->private_free = line6_cleanup_pcm;
line6pcm->pcm = pcm;
strcpy(pcm->name, line6pcm->line6->properties->name);
/* set operators */
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_line6_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_line6_capture_ops);
/* pre-allocation of buffers */
snd_pcm_lib_preallocate_pages_for_all(pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
64 * 1024, 128 * 1024);
return 0;
}
/* PCM device destructor */
static int snd_line6_pcm_free(struct snd_device *device)
{
return 0;
}
/*
Create and register the PCM device and mixer entries.
Create URBs for playback and capture.
*/
int line6_init_pcm(struct usb_line6 *line6, struct line6_pcm_properties *properties)
{
static struct snd_device_ops pcm_ops = {
.dev_free = snd_line6_pcm_free,
};
int err;
int ep_read = 0, ep_write = 0;
struct snd_line6_pcm *line6pcm;
if(!(line6->properties->capabilities & LINE6_BIT_PCM))
return 0; /* skip PCM initialization and report success */
/* initialize PCM subsystem based on product id: */
switch(line6->product) {
case LINE6_DEVID_BASSPODXT:
case LINE6_DEVID_BASSPODXTLIVE:
case LINE6_DEVID_BASSPODXTPRO:
case LINE6_DEVID_PODXT:
case LINE6_DEVID_PODXTLIVE:
case LINE6_DEVID_PODXTPRO:
ep_read = 0x82;
ep_write = 0x01;
break;
case LINE6_DEVID_PODX3:
case LINE6_DEVID_PODX3LIVE:
ep_read = 0x86;
ep_write = 0x02;
break;
case LINE6_DEVID_POCKETPOD:
ep_read = 0x82;
ep_write = 0x02;
break;
case LINE6_DEVID_GUITARPORT:
case LINE6_DEVID_TONEPORT_GX:
ep_read = 0x82;
ep_write = 0x01;
break;
case LINE6_DEVID_TONEPORT_UX1:
ep_read = 0x00;
ep_write = 0x00;
break;
case LINE6_DEVID_TONEPORT_UX2:
ep_read = 0x87;
ep_write = 0x00;
break;
default:
MISSING_CASE;
}
line6pcm = kzalloc(sizeof(struct snd_line6_pcm), GFP_KERNEL);
if(line6pcm == NULL)
return -ENOMEM;
line6pcm->volume[0] = line6pcm->volume[1] = 128;
line6pcm->line6 = line6;
line6pcm->ep_audio_read = ep_read;
line6pcm->ep_audio_write = ep_write;
line6pcm->max_packet_size = usb_maxpacket(line6->usbdev, usb_rcvintpipe(line6->usbdev, ep_read), 0);
line6pcm->properties = properties;
line6->line6pcm = line6pcm;
/* PCM device: */
if((err = snd_device_new(line6->card, SNDRV_DEV_PCM, line6, &pcm_ops)) < 0)
return err;
snd_card_set_dev(line6->card, line6->ifcdev);
if((err = snd_line6_new_pcm(line6pcm)) < 0)
return err;
spin_lock_init(&line6pcm->lock_audio_out);
spin_lock_init(&line6pcm->lock_audio_in);
spin_lock_init(&line6pcm->lock_trigger);
if((err = create_audio_out_urbs(line6pcm)) < 0)
return err;
if((err = create_audio_in_urbs(line6pcm)) < 0)
return err;
/* mixer: */
if((err = snd_ctl_add(line6->card, snd_ctl_new1(&line6_control, line6pcm))) < 0)
return err;
return 0;
}
/* prepare pcm callback */
int snd_line6_prepare(struct snd_pcm_substream *substream)
{
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
if(!test_and_set_bit(BIT_PREPARED, &line6pcm->flags)) {
unlink_wait_clear_audio_out_urbs(line6pcm);
line6pcm->pos_out = 0;
line6pcm->pos_out_done = 0;
unlink_wait_clear_audio_in_urbs(line6pcm);
line6pcm->bytes_out = 0;
line6pcm->pos_in_done = 0;
line6pcm->bytes_in = 0;
}
return 0;
}
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