/*
 * 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
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=b98acbff9a05b371c5f0ca6e44a3af8ce9274379'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers?id=b98acbff9a05b371c5f0ca6e44a3af8ce9274379'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb?id=b98acbff9a05b371c5f0ca6e44a3af8ce9274379'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host?id=b98acbff9a05b371c5f0ca6e44a3af8ce9274379'>host</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/sl811-hcd.c?id=b98acbff9a05b371c5f0ca6e44a3af8ce9274379'>sl811-hcd.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='b98acbff9a05b371c5f0ca6e44a3af8ce9274379'/><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>Colin Ian King &lt;colin.king@canonical.com&gt;</td><td class='right'>2017-01-11 15:36:20 +0000</td></tr>
<tr><th>committer</th><td>Mark Brown &lt;broonie@kernel.org&gt;</td><td class='right'>2017-01-18 16:32:44 +0000</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/sl811-hcd.c?id=b98acbff9a05b371c5f0ca6e44a3af8ce9274379'>b98acbff9a05b371c5f0ca6e44a3af8ce9274379</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/host/sl811-hcd.c?id=b98acbff9a05b371c5f0ca6e44a3af8ce9274379'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=b98acbff9a05b371c5f0ca6e44a3af8ce9274379'>d6835885f859a456e62ce93621041138d6a54f9b</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/host/sl811-hcd.c?id=b98acbff9a05b371c5f0ca6e44a3af8ce9274379'>drivers/usb/host/sl811-hcd.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/sl811-hcd.c?id=d00b74613fb18dfd0a5aa99270ee2e72d5c808d7'>d00b74613fb18dfd0a5aa99270ee2e72d5c808d7</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/host/sl811-hcd.c?id=b98acbff9a05b371c5f0ca6e44a3af8ce9274379&amp;id2=d00b74613fb18dfd0a5aa99270ee2e72d5c808d7'>diff</a>)</td></tr></table>
<div class='commit-subject'>regulator: twl6030: fix range comparison, allowing vsel = 59</div><div class='commit-msg'>The range min_uV &gt; 1350000 &amp;&amp; min_uV &lt;= 150000 is never reachable
because of a typo in the previous range check and hence vsel = 59
is never reached.  Fix the previous range check to enable the
vsel = 59 setting.

Fixes CoverityScan CID#728454 ("Logially dead code")

Signed-off-by: Colin Ian King &lt;colin.king@canonical.com&gt;
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=b98acbff9a05b371c5f0ca6e44a3af8ce9274379'>Diffstat</a> (limited to 'drivers/usb/host/sl811-hcd.c')</div><table summary='diffstat' class='diffstat'>