/*
 * PC-Speaker driver for Linux
 *
 * Copyright (C) 1993-1997  Michael Beck
 * Copyright (C) 1997-2001  David Woodhouse
 * Copyright (C) 2001-2008  Stas Sergeev
 */

#ifndef __PCSP_H__
#define __PCSP_H__

#include <linux/hrtimer.h>
#include <linux/i8253.h>
#include <linux/timex.h>

#define PCSP_SOUND_VERSION 0x400	/* read 4.00 */
#define PCSP_DEBUG 0

/* default timer freq for PC-Speaker: 18643 Hz */
#define DIV_18KHZ 64
#define MAX_DIV DIV_18KHZ
#define CALC_DIV(d) (MAX_DIV >> (d))
#define CUR_DIV() CALC_DIV(chip->treble)
#define PCSP_MAX_TREBLE 1

/* unfortunately, with hrtimers 37KHz does not work very well :( */
#define PCSP_DEFAULT_TREBLE 0
#define MIN_DIV (MAX_DIV >> PCSP_MAX_TREBLE)

/* wild guess */
#define PCSP_MIN_LPJ 1000000
#define PCSP_DEFAULT_SDIV (DIV_18KHZ >> 1)
#define PCSP_DEFAULT_SRATE (PIT_TICK_RATE / PCSP_DEFAULT_SDIV)
#define PCSP_INDEX_INC() (1 << (PCSP_MAX_TREBLE - chip->treble))
#define PCSP_CALC_RATE(i) (PIT_TICK_RATE / CALC_DIV(i))
#define PCSP_RATE() PCSP_CALC_RATE(chip->treble)
#define PCSP_MIN_RATE__1 MAX_DIV/PIT_TICK_RATE
#define PCSP_MAX_RATE__1 MIN_DIV/PIT_TICK_RATE
#define PCSP_MAX_PERIOD_NS (1000000000ULL * PCSP_MIN_RATE__1)
#define PCSP_MIN_PERIOD_NS (1000000000ULL * PCSP_MAX_RATE__1)
#define PCSP_CALC_NS(div) ({ \
	u64 __val = 1000000000ULL * (div); \
	do_div(__val, PIT_TICK_RATE); \
	__val; \
})
#define PCSP_PERIOD_NS() PCSP_CALC_NS(CUR_DIV())

#define PCSP_MAX_PERIOD_SIZE	(64*1024)
#define PCSP_MAX_PERIODS	512
#define PCSP_BUFFER_SIZE	(128*1024)

struct snd_pcsp {
	struct snd_card *card;
	struct snd_pcm *pcm;
	struct input_dev *input_dev;
	struct hrtimer timer;
	unsigned short port, irq, dma;
	spinlock_t substream_lock;
	struct snd_pcm_substream *playback_substream;
	unsigned int fmt_size;
	unsigned int is_signed;
	size_t playback_ptr;
	size_t period_ptr;
	atomic_t timer_active;
	int thalf;
	u64 ns_rem;
	unsigned char val61;
	int enable;
	int max_treble;
	int treble;
	int pcspkr;
};

extern struct snd_pcsp pcsp_chip;

extern enum hrtimer_restart pcsp_do_timer(struct hrtimer *handle);
extern void pcsp_sync_stop(struct snd_pcsp *chip);

extern int snd_pcsp_new_pcm(struct snd_pcsp *chip);
extern int snd_pcsp_new_mixer(struct snd_pcsp *chip, int nopcm);

#endif
private-remove&amp;id=238d1d0f79f619d75c2cc741d6770fb0986aef24'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/sound/soc/pxa/pxa-ssp.h'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='238d1d0f79f619d75c2cc741d6770fb0986aef24'/><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/commit/?h=nds-private-remove&amp;id=238d1d0f79f619d75c2cc741d6770fb0986aef24'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound?h=nds-private-remove&amp;id=238d1d0f79f619d75c2cc741d6770fb0986aef24'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/soc?h=nds-private-remove&amp;id=238d1d0f79f619d75c2cc741d6770fb0986aef24'>soc</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/pxa?h=nds-private-remove&amp;id=238d1d0f79f619d75c2cc741d6770fb0986aef24'>pxa</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/pxa/pxa-ssp.h?h=nds-private-remove&amp;id=238d1d0f79f619d75c2cc741d6770fb0986aef24'>pxa-ssp.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='238d1d0f79f619d75c2cc741d6770fb0986aef24'/><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><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-30 09:32:26 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-30 09:32:26 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/pxa/pxa-ssp.h?h=nds-private-remove&amp;id=238d1d0f79f619d75c2cc741d6770fb0986aef24'>238d1d0f79f619d75c2cc741d6770fb0986aef24</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/soc/pxa/pxa-ssp.h?id=238d1d0f79f619d75c2cc741d6770fb0986aef24'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=238d1d0f79f619d75c2cc741d6770fb0986aef24'>ed11bb89c3c61cba7aff3ebc90647f83758a982d</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/soc/pxa/pxa-ssp.h?h=nds-private-remove&amp;id=238d1d0f79f619d75c2cc741d6770fb0986aef24'>sound/soc/pxa/pxa-ssp.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/pxa/pxa-ssp.h?h=nds-private-remove&amp;id=f3de082c12e5e9ff43c58a7561f6ec3272d03a48'>f3de082c12e5e9ff43c58a7561f6ec3272d03a48</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/pxa/pxa-ssp.h?h=nds-private-remove&amp;id=238d1d0f79f619d75c2cc741d6770fb0986aef24&amp;id2=f3de082c12e5e9ff43c58a7561f6ec3272d03a48'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/pxa/pxa-ssp.h?h=nds-private-remove&amp;id=36f671be1db1b17d3d4ab0c8b47f81ccb1efcb75'>36f671be1db1b17d3d4ab0c8b47f81ccb1efcb75</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/pxa/pxa-ssp.h?h=nds-private-remove&amp;id=238d1d0f79f619d75c2cc741d6770fb0986aef24&amp;id2=36f671be1db1b17d3d4ab0c8b47f81ccb1efcb75'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'docs-4.10-rc1-fix' of git://git.lwn.net/linux</div><div class='commit-msg'>Pull documentation fixes from Jonathan Corbet:
 "Two small fixes:

   - A merge error on my part broke the DocBook build. I've
     requisitioned one of tglx's frozen sharks for appropriate
     disciplinary action and resolved to be more careful about testing
     the DocBook stuff as long as it's still around.

   - Fix an error in unaligned-memory-access.txt"

* tag 'docs-4.10-rc1-fix' of git://git.lwn.net/linux:
  Documentation/unaligned-memory-access.txt: fix incorrect comparison operator
  docs: Fix build failure
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=238d1d0f79f619d75c2cc741d6770fb0986aef24'>Diffstat</a> (limited to 'sound/soc/pxa/pxa-ssp.h')</div><table summary='diffstat' class='diffstat'>