/*
 * Linux driver for TerraTec DMX 6Fire USB
 *
 * Author:	Torsten Schenk <torsten.schenk@zoho.com>
 * Created:	Jan 01, 2011
 * Copyright:	(C) Torsten Schenk
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 */

#ifndef USB6FIRE_PCM_H
#define USB6FIRE_PCM_H

#include <sound/pcm.h>
#include <linux/mutex.h>

#include "common.h"

enum /* settings for pcm */
{
	/* maximum of EP_W_MAX_PACKET_SIZE[] (see firmware.c) */
	PCM_N_URBS = 16, PCM_N_PACKETS_PER_URB = 8, PCM_MAX_PACKET_SIZE = 604
};

struct pcm_urb {
	struct sfire_chip *chip;

	/* BEGIN DO NOT SEPARATE */
	struct urb instance;
	struct usb_iso_packet_descriptor packets[PCM_N_PACKETS_PER_URB];
	/* END DO NOT SEPARATE */
	u8 *buffer;

	struct pcm_urb *peer;
};

struct pcm_substream {
	spinlock_t lock;
	struct snd_pcm_substream *instance;

	bool active;

	snd_pcm_uframes_t dma_off; /* current position in alsa dma_area */
	snd_pcm_uframes_t period_off; /* current position in current period */
};

struct pcm_runtime {
	struct sfire_chip *chip;
	struct snd_pcm *instance;

	struct pcm_substream playback;
	struct pcm_substream capture;
	bool panic; /* if set driver won't do anymore pcm on device */

	struct pcm_urb in_urbs[PCM_N_URBS];
	struct pcm_urb out_urbs[PCM_N_URBS];
	int in_packet_size;
	int out_packet_size;
	int in_n_analog; /* number of analog channels soundcard sends */
	int out_n_analog; /* number of analog channels soundcard receives */

	struct mutex stream_mutex;
	u8 stream_state; /* one of STREAM_XXX (pcm.c) */
	u8 rate; /* one of PCM_RATE_XXX */
	wait_queue_head_t stream_wait_queue;
	bool stream_wait_cond;
};

int usb6fire_pcm_init(struct sfire_chip *chip);
void usb6fire_pcm_abort(struct sfire_chip *chip);
void usb6fire_pcm_destroy(struct sfire_chip *chip);
#endif /* USB6FIRE_PCM_H */
href='/cgit.cgi/linux/net-next.git/commit/include/trace/events/cma.h?id=a0a28644c1cf191e514dd64bf438e69c178b8440'>commit</a><a class='active' href='/cgit.cgi/linux/net-next.git/diff/include/trace/events/cma.h?id=a0a28644c1cf191e514dd64bf438e69c178b8440&amp;id2=6f3e71c0c3f2479e05682e2e563b75decab36591'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/include/trace/events/cma.h'>
<input type='hidden' name='id' value='a0a28644c1cf191e514dd64bf438e69c178b8440'/><input type='hidden' name='id2' value='6f3e71c0c3f2479e05682e2e563b75decab36591'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/diff/?id=a0a28644c1cf191e514dd64bf438e69c178b8440&amp;id2=6f3e71c0c3f2479e05682e2e563b75decab36591'>root</a>/<a href='/cgit.cgi/linux/net-next.git/diff/include?id=a0a28644c1cf191e514dd64bf438e69c178b8440&amp;id2=6f3e71c0c3f2479e05682e2e563b75decab36591'>include</a>/<a href='/cgit.cgi/linux/net-next.git/diff/include/trace?id=a0a28644c1cf191e514dd64bf438e69c178b8440&amp;id2=6f3e71c0c3f2479e05682e2e563b75decab36591'>trace</a>/<a href='/cgit.cgi/linux/net-next.git/diff/include/trace/events?id=a0a28644c1cf191e514dd64bf438e69c178b8440&amp;id2=6f3e71c0c3f2479e05682e2e563b75decab36591'>events</a>/<a href='/cgit.cgi/linux/net-next.git/diff/include/trace/events/cma.h?id=a0a28644c1cf191e514dd64bf438e69c178b8440&amp;id2=6f3e71c0c3f2479e05682e2e563b75decab36591'>cma.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='a0a28644c1cf191e514dd64bf438e69c178b8440'/><input type='hidden' name='id2' value='6f3e71c0c3f2479e05682e2e563b75decab36591'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=a0a28644c1cf191e514dd64bf438e69c178b8440&amp;id2=6f3e71c0c3f2479e05682e2e563b75decab36591'>Diffstat</a> (limited to 'include/trace/events/cma.h')</div><table summary='diffstat' class='diffstat'>