/* $FreeBSD: head/sys/dev/sound/usb/uaudio_pcm.c 246128 2013-01-30 18:01:20Z sbz $ */

/*-
 * Copyright (c) 2000-2002 Hiroyuki Aizu <aizu@navi.org>
 * Copyright (c) 2006 Hans Petter Selasky
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */


#include "opt_snd.h"

#include <dev/sound/pcm/sound.h>
#include <dev/sound/chip.h>
#include <bus/u4b/audio/uaudio.h>

#include "mixer_if.h"

/************************************************************/
static void *
ua_chan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
{
	return (uaudio_chan_init(devinfo, b, c, dir));
}

static int
ua_chan_free(kobj_t obj, void *data)
{
	return (uaudio_chan_free(data));
}

static int
ua_chan_setformat(kobj_t obj, void *data, uint32_t format)
{
	/*
	 * At this point, no need to query as we
	 * shouldn't select an unsorted format
	 */
	return (uaudio_chan_set_param_format(data, format));
}

static uint32_t
ua_chan_setspeed(kobj_t obj, void *data, uint32_t speed)
{
	return (uaudio_chan_set_param_speed(data, speed));
}

static uint32_t
ua_chan_setblocksize(kobj_t obj, void *data, uint32_t blocksize)
{
	return (uaudio_chan_set_param_blocksize(data, blocksize));
}

static int
ua_chan_setfragments(kobj_t obj, void *data, uint32_t blocksize, uint32_t blockcount)
{
	return (uaudio_chan_set_param_fragments(data, blocksize, blockcount));
}

static int
ua_chan_trigger(kobj_t obj, void *data, int go)
{
	if (PCMTRIG_COMMON(go)) {
		if (go == PCMTRIG_START) {
			uaudio_chan_start(data);
		} else {
			uaudio_chan_stop(data);
		}
	}
	return (0);
}

static uint32_t
ua_chan_getptr(kobj_t obj, void *data)
{
	return (uaudio_chan_getptr(data));
}

static struct pcmchan_caps *
ua_chan_getcaps(kobj_t obj, void *data)
{
	return (uaudio_chan_getcaps(data));
}

static struct pcmchan_matrix *
ua_chan_getmatrix(kobj_t obj, void *data, uint32_t format)
{
	return (uaudio_chan_getmatrix(data, format));
}

static kobj_method_t ua_chan_methods[] = {
	KOBJMETHOD(channel_init, ua_chan_init),
	KOBJMETHOD(channel_free, ua_chan_free),
	KOBJMETHOD(channel_setformat, ua_chan_setformat),
	KOBJMETHOD(channel_setspeed, ua_chan_setspeed),
	KOBJMETHOD(channel_setblocksize, ua_chan_setblocksize),
	KOBJMETHOD(channel_setfragments, ua_chan_setfragments),
	KOBJMETHOD(channel_trigger, ua_chan_trigger),
	KOBJMETHOD(channel_getptr, ua_chan_getptr),
	KOBJMETHOD(channel_getcaps, ua_chan_getcaps),
	KOBJMETHOD(channel_getmatrix, ua_chan_getmatrix),
	KOBJMETHOD_END
};

CHANNEL_DECLARE(ua_chan);

/************************************************************/
static int
ua_mixer_init(struct snd_mixer *m)
{
	return (uaudio_mixer_init_sub(mix_getdevinfo(m), m));
}

static int
ua_mixer_set(struct snd_mixer *m, unsigned type, unsigned left, unsigned right)
{
	struct lock *lock = mixer_get_lock(m);
	uint8_t do_unlock;

	if (lockowned(lock)) {
		do_unlock = 0;
	} else {
		do_unlock = 1;
		lockmgr(lock, LK_EXCLUSIVE);
	}
	uaudio_mixer_set(mix_getdevinfo(m), type, left, right);
	if (do_unlock) {
		lockmgr(lock, LK_RELEASE);
	}
	return (left | (right << 8));
}

static uint32_t
ua_mixer_setrecsrc(struct snd_mixer *m, uint32_t src)
{
	struct lock *lock = mixer_get_lock(m);
	int retval;
	uint8_t do_unlock;

	if (lockowned(lock)) {
		do_unlock = 0;
	} else {
		do_unlock = 1;
		lockmgr(lock, LK_EXCLUSIVE);
	}
	retval = uaudio_mixer_setrecsrc(mix_getdevinfo(m), src);
	if (do_unlock) {
		lockmgr(lock, LK_RELEASE);
	}
	return (retval);
}

static int
ua_mixer_uninit(struct snd_mixer *m)
{
	return (uaudio_mixer_uninit_sub(mix_getdevinfo(m)));
}

static kobj_method_t ua_mixer_methods[] = {
	KOBJMETHOD(mixer_init, ua_mixer_init),
	KOBJMETHOD(mixer_uninit, ua_mixer_uninit),
	KOBJMETHOD(mixer_set, ua_mixer_set),
	KOBJMETHOD(mixer_setrecsrc, ua_mixer_setrecsrc),
	KOBJMETHOD_END
};

MIXER_DECLARE(ua_mixer);
/************************************************************/


static int
ua_probe(device_t dev)
{
	struct sndcard_func *func;

	/* the parent device has already been probed */

	func = device_get_ivars(dev);

	if ((func == NULL) ||
	    (func->func != SCF_PCM)) {
		return (ENXIO);
	}
	device_set_desc(dev, "USB audio");

	return (BUS_PROBE_DEFAULT);
}

static int
ua_attach(device_t dev)
{
	return (uaudio_attach_sub(dev, &ua_mixer_class, &ua_chan_class));
}

static int
ua_detach(device_t dev)
{
	return (uaudio_detach_sub(dev));
}

/************************************************************/

static device_method_t ua_pcm_methods[] = {
	/* Device interface */
	DEVMETHOD(device_probe, ua_probe),
	DEVMETHOD(device_attach, ua_attach),
	DEVMETHOD(device_detach, ua_detach),

	DEVMETHOD_END
};

static driver_t ua_pcm_driver = {
	"pcm",
	ua_pcm_methods,
	PCM_SOFTC_SIZE,
};

DRIVER_MODULE(ua_pcm, uaudio, ua_pcm_driver, pcm_devclass, NULL, NULL);
MODULE_DEPEND(ua_pcm, uaudio, 1, 1, 1);
MODULE_DEPEND(ua_pcm, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
MODULE_VERSION(ua_pcm, 1);