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#ifndef __SOUND_TIMER_H
#define __SOUND_TIMER_H

/*
 *  Timer abstract layer
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>,
 *		     Abramo Bagnara <abramo@alsa-project.org>
 *
 *
 *   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.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include <sound/asound.h>
#include <linux/interrupt.h>

#define snd_timer_chip(timer) ((timer)->private_data)

#define SNDRV_TIMER_DEVICES	16

#define SNDRV_TIMER_DEV_FLG_PCM	0x10000000

#define SNDRV_TIMER_HW_AUTO	0x00000001	/* auto trigger is supported */
#define SNDRV_TIMER_HW_STOP	0x00000002	/* call stop before start */
#define SNDRV_TIMER_HW_SLAVE	0x00000004	/* only slave timer (variable resolution) */
#define SNDRV_TIMER_HW_FIRST	0x00000008	/* first tick can be incomplete */
#define SNDRV_TIMER_HW_TASKLET	0x00000010	/* timer is called from tasklet */

#define SNDRV_TIMER_IFLG_SLAVE	  0x00000001
#define SNDRV_TIMER_IFLG_RUNNING  0x00000002
#define SNDRV_TIMER_IFLG_START	  0x00000004
#define SNDRV_TIMER_IFLG_AUTO	  0x00000008	/* auto restart */
#define SNDRV_TIMER_IFLG_FAST	  0x00000010	/* fast callback (do not use tasklet) */
#define SNDRV_TIMER_IFLG_CALLBACK 0x00000020	/* timer callback is active */
#define SNDRV_TIMER_IFLG_EXCLUSIVE 0x00000040	/* exclusive owner - no more instances */
#define SNDRV_TIMER_IFLG_EARLY_EVENT 0x00000080	/* write early event to the poll queue */

#define SNDRV_TIMER_FLG_CHANGE	0x00000001
#define SNDRV_TIMER_FLG_RESCHED	0x00000002	/* need reschedule */

struct snd_timer;

struct snd_timer_hardware {
	/* -- must be filled with low-level driver */
	unsigned int flags;		/* various flags */
	unsigned long resolution;	/* average timer resolution for one tick in nsec */
	unsigned long resolution_min;	/* minimal resolution */
	unsigned long resolution_max;	/* maximal resolution */
	unsigned long ticks;		/* max timer ticks per interrupt */
	/* -- low-level functions -- */
	int (*open) (struct snd_timer * timer);
	int (*close) (struct snd_timer * timer);
	unsigned long (*c_resolution) (struct snd_timer * timer);
	int (*start) (struct snd_timer * timer);
	int (*stop) (struct snd_timer * timer);
	int (*set_period) (struct snd_timer * timer, unsigned long period_num, unsigned long period_den);
	int (*precise_resolution) (struct snd_timer * timer, unsigned long *num, unsigned long *den);
};

struct snd_timer {
	int tmr_class;
	struct snd_card *card;
	struct module *module;
	int tmr_device;
	int tmr_subdevice;
	char id[64];
	char name[80];
	unsigned int flags;
	int running;			/* running instances */
	unsigned long sticks;		/* schedule ticks */
	void *private_data;
	void (*private_free) (struct snd_timer *timer);
	struct snd_timer_hardware hw;
	spinlock_t lock;
	struct list_head device_list;
	struct list_head open_list_head;
	struct list_head active_list_head;
	struct list_head ack_list_head;
	struct list_head sack_list_head; /* slow ack list head */
	struct tasklet_struct task_queue;
	int max_instances;	/* upper limit of timer instances */
	int num_instances;	/* current number of timer instances */
};

struct snd_timer_instance {
	struct snd_timer *timer;
	char *owner;
	unsigned int flags;
	void *private_data;
	void (*private_free) (struct snd_timer_instance *ti);
	void (*callback) (struct snd_timer_instance *timeri,
			  unsigned long ticks, unsigned long resolution);
	void (*ccallback) (struct snd_timer_instance * timeri,
			   int event,
			   struct timespec * tstamp,
			   unsigned long resolution);
	void (*disconnect)(struct snd_timer_instance *timeri);
	void *callback_data;
	unsigned long ticks;		/* auto-load ticks when expired */
	unsigned long cticks;		/* current ticks */
	unsigned long pticks;		/* accumulated ticks for callback */
	unsigned long resolution;	/* current resolution for tasklet */
	unsigned long lost;		/* lost ticks */
	int slave_class;
	unsigned int slave_id;
	struct list_head open_list;
	struct list_head active_list;
	struct list_head ack_list;
	struct list_head slave_list_head;
	struct list_head slave_active_head;
	struct snd_timer_instance *master;
};

/*
 *  Registering
 */

int snd_timer_new(struct snd_card *card, char *id, struct snd_timer_id *tid, struct snd_timer **rtimer);
void snd_timer_notify(struct snd_timer *timer, int event, struct timespec *tstamp);
int snd_timer_global_new(char *id, int device, struct snd_timer **rtimer);
int snd_timer_global_free(struct snd_timer *timer);
int snd_timer_global_register(struct snd_timer *timer);

int snd_timer_open(struct snd_timer_instance **ti, char *owner, struct snd_timer_id *tid, unsigned int slave_id);
int snd_timer_close(struct snd_timer_instance *timeri);
unsigned long snd_timer_resolution(struct snd_timer_instance *timeri);
int snd_timer_start(struct snd_timer_instance *timeri, unsigned int ticks);
int snd_timer_stop(struct snd_timer_instance *timeri);
int snd_timer_continue(struct snd_timer_instance *timeri);
int snd_timer_pause(struct snd_timer_instance *timeri);

void snd_timer_interrupt(struct snd_timer *timer, unsigned long ticks_left);

#endif /* __SOUND_TIMER_H */

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Name Type Size Permission Actions
ac97 Folder 0755
ac97_codec.h File 16.34 KB 0644
aci.h File 2.4 KB 0644
ad1816a.h File 5.38 KB 0644
ad1843.h File 1.48 KB 0644
adau1373.h File 699 B 0644
aess.h File 1.63 KB 0644
ak4113.h File 10.89 KB 0644
ak4114.h File 10.22 KB 0644
ak4117.h File 9.02 KB 0644
ak4531_codec.h File 3.1 KB 0644
ak4641.h File 622 B 0644
ak4xxx-adda.h File 3.34 KB 0644
alc5623.h File 536 B 0644
asequencer.h File 3.58 KB 0644
asound.h File 1.25 KB 0644
asoundef.h File 16.7 KB 0644
compress_driver.h File 6.93 KB 0644
control.h File 8.84 KB 0644
core.h File 13.84 KB 0644
cs35l33.h File 1.01 KB 0644
cs35l34.h File 887 B 0644
cs35l35.h File 2.36 KB 0644
cs4231-regs.h File 8.28 KB 0644
cs4271.h File 1.38 KB 0644
cs42l52.h File 738 B 0644
cs42l56.h File 1.16 KB 0644
cs42l73.h File 507 B 0644
cs8403.h File 8.63 KB 0644
cs8427.h File 10.4 KB 0644
da7213.h File 1.15 KB 0644
da7218.h File 2.62 KB 0644
da7219-aad.h File 2.42 KB 0644
da7219.h File 1.04 KB 0644
da9055.h File 914 B 0644
designware_i2s.h File 2.25 KB 0644
dmaengine_pcm.h File 6.22 KB 0644
emu10k1.h File 89.25 KB 0644
emu10k1_synth.h File 1.35 KB 0644
emu8000.h File 4.01 KB 0644
emu8000_reg.h File 10.21 KB 0644
emux_legacy.h File 5.37 KB 0644
emux_synth.h File 7.46 KB 0644
es1688.h File 3.53 KB 0644
gus.h File 20.21 KB 0644
hda_chmap.h File 2.6 KB 0644
hda_hwdep.h File 1.38 KB 0644
hda_i915.h File 1.64 KB 0644
hda_register.h File 10 KB 0644
hda_regmap.h File 6.59 KB 0644
hda_verbs.h File 16.81 KB 0644
hdaudio.h File 18.39 KB 0644
hdaudio_ext.h File 6.99 KB 0644
hdmi-codec.h File 2.42 KB 0644
hwdep.h File 2.56 KB 0644
i2c.h File 3.47 KB 0644
info.h File 7.41 KB 0644
initval.h File 3.08 KB 0644
jack.h File 3.75 KB 0644
l3.h File 524 B 0644
max9768.h File 729 B 0644
max98088.h File 1.26 KB 0644
max98090.h File 754 B 0644
max98095.h File 1.54 KB 0644
memalloc.h File 4.41 KB 0644
minors.h File 4.33 KB 0644
mixer_oss.h File 2.41 KB 0644
mpu401.h File 4.49 KB 0644
omap-hdmi-audio.h File 1.34 KB 0644
omap-pcm.h File 864 B 0644
opl3.h File 12.31 KB 0644
opl4.h File 1.1 KB 0644
pcm-indirect.h File 5.7 KB 0644
pcm.h File 47.51 KB 0644
pcm_drm_eld.h File 183 B 0644
pcm_iec958.h File 332 B 0644
pcm_oss.h File 2.69 KB 0644
pcm_params.h File 9.03 KB 0644
pt2258.h File 1.18 KB 0644
pxa2xx-lib.h File 1.48 KB 0644
rawmidi.h File 6.17 KB 0644
rt286.h File 460 B 0644
rt298.h File 519 B 0644
rt5514.h File 478 B 0644
rt5640.h File 648 B 0644
rt5645.h File 738 B 0644
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rt5663.h File 622 B 0644
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rt5670.h File 679 B 0644
s3c24xx_uda134x.h File 229 B 0644
sb.h File 10.98 KB 0644
sb16_csp.h File 2.71 KB 0644
seq_device.h File 2.79 KB 0644
seq_kernel.h File 3.96 KB 0644
seq_midi_emul.h File 7.26 KB 0644
seq_midi_event.h File 2.17 KB 0644
seq_oss.h File 2.86 KB 0644
seq_oss_legacy.h File 1 KB 0644
seq_virmidi.h File 2.73 KB 0644
sh_dac_audio.h File 587 B 0644
sh_fsi.h File 847 B 0644
simple_card.h File 683 B 0644
simple_card_utils.h File 3.96 KB 0644
snd_wavefront.h File 5.57 KB 0644
soc-acpi-intel-match.h File 1.1 KB 0644
soc-acpi.h File 3.6 KB 0644
soc-dai.h File 11.13 KB 0644
soc-dapm.h File 30.87 KB 0644
soc-dpcm.h File 4.73 KB 0644
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spear_spdif.h File 1010 B 0644
sta32x.h File 1.2 KB 0644
sta350.h File 1.65 KB 0644
tas2552-plat.h File 678 B 0644
tas5086.h File 210 B 0644
tea6330t.h File 1.14 KB 0644
timer.h File 5.56 KB 0644
tlv.h File 2.27 KB 0644
tlv320aic32x4.h File 1.43 KB 0644
tlv320aic3x.h File 1.88 KB 0644
tlv320dac33-plat.h File 720 B 0644
tpa6130a2-plat.h File 900 B 0644
uda134x.h File 597 B 0644
uda1380.h File 481 B 0644
util_mem.h File 2.26 KB 0644
vx_core.h File 15.34 KB 0644
wavefront.h File 18.76 KB 0644
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wm1250-ev1.h File 656 B 0644
wm2000.h File 625 B 0644
wm2200.h File 1.46 KB 0644
wm5100.h File 1.25 KB 0644
wm8903.h File 15.16 KB 0644
wm8904.h File 7.43 KB 0644
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wm8962.h File 1.8 KB 0644
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wm9081.h File 661 B 0644
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wss.h File 8.44 KB 0644