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/*
* Line6 Pod HD
*
* Copyright (C) 2011 Stefan Hajnoczi <stefanha@gmail.com>
*
* 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 <sound/core.h>
#include <sound/pcm.h>
#include "audio.h"
#include "driver.h"
#include "pcm.h"
#include "podhd.h"
#define PODHD_BYTES_PER_FRAME 6 /* 24bit audio (stereo) */
static struct snd_ratden podhd_ratden = {
.num_min = 48000,
.num_max = 48000,
.num_step = 1,
.den = 1,
};
static struct line6_pcm_properties podhd_pcm_properties = {
.snd_line6_playback_hw = {
.info = (SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_PAUSE |
#ifdef CONFIG_PM
SNDRV_PCM_INFO_RESUME |
#endif
SNDRV_PCM_INFO_SYNC_START),
.formats = SNDRV_PCM_FMTBIT_S24_3LE,
.rates = SNDRV_PCM_RATE_48000,
.rate_min = 48000,
.rate_max = 48000,
.channels_min = 2,
.channels_max = 2,
.buffer_bytes_max = 60000,
.period_bytes_min = 64,
.period_bytes_max = 8192,
.periods_min = 1,
.periods_max = 1024},
.snd_line6_capture_hw = {
.info = (SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID |
#ifdef CONFIG_PM
SNDRV_PCM_INFO_RESUME |
#endif
SNDRV_PCM_INFO_SYNC_START),
.formats = SNDRV_PCM_FMTBIT_S24_3LE,
.rates = SNDRV_PCM_RATE_48000,
.rate_min = 48000,
.rate_max = 48000,
.channels_min = 2,
.channels_max = 2,
.buffer_bytes_max = 60000,
.period_bytes_min = 64,
.period_bytes_max = 8192,
.periods_min = 1,
.periods_max = 1024},
.snd_line6_rates = {
.nrats = 1,
.rats = &podhd_ratden},
.bytes_per_frame = PODHD_BYTES_PER_FRAME
};
/*
POD HD destructor.
*/
static void podhd_destruct(struct usb_interface *interface)
{
struct usb_line6_podhd *podhd = usb_get_intfdata(interface);
if (podhd == NULL)
return;
line6_cleanup_audio(&podhd->line6);
}
/*
POD HD device disconnected.
*/
static void line6_podhd_disconnect(struct usb_interface *interface)
{
struct usb_line6_podhd *podhd;
if (interface == NULL)
return;
podhd = usb_get_intfdata(interface);
if (podhd != NULL) {
struct snd_line6_pcm *line6pcm = podhd->line6.line6pcm;
if (line6pcm != NULL)
line6_pcm_disconnect(line6pcm);
}
podhd_destruct(interface);
}
/*
Try to init POD HD device.
*/
static int podhd_try_init(struct usb_interface *interface,
struct usb_line6_podhd *podhd)
{
int err;
struct usb_line6 *line6 = &podhd->line6;
if ((interface == NULL) || (podhd == NULL))
return -ENODEV;
line6->disconnect = line6_podhd_disconnect;
/* initialize audio system: */
err = line6_init_audio(line6);
if (err < 0)
return err;
/* initialize MIDI subsystem: */
err = line6_init_midi(line6);
if (err < 0)
return err;
/* initialize PCM subsystem: */
err = line6_init_pcm(line6, &podhd_pcm_properties);
if (err < 0)
return err;
/* register USB audio system: */
err = line6_register_audio(line6);
return err;
}
/*
Init POD HD device (and clean up in case of failure).
*/
int line6_podhd_init(struct usb_interface *interface, struct usb_line6 *line6)
{
struct usb_line6_podhd *podhd = (struct usb_line6_podhd *) line6;
int err = podhd_try_init(interface, podhd);
if (err < 0)
podhd_destruct(interface);
return err;
}
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