mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-27 06:04:23 +08:00
e23e7a1436
CONFIG_HOTPLUG is going away as an option. As result the __dev* markings will be going away. Remove use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Takashi Iwai <tiwai@suse.de>
97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
/*
|
|
* Copyright (c) by Lee Revell <rlrevell@joe-job.com>
|
|
* Clemens Ladisch <clemens@ladisch.de>
|
|
* Routines for control of EMU10K1 chips
|
|
*
|
|
* BUGS:
|
|
* --
|
|
*
|
|
* TODO:
|
|
* --
|
|
*
|
|
* 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 <linux/time.h>
|
|
#include <sound/core.h>
|
|
#include <sound/emu10k1.h>
|
|
|
|
static int snd_emu10k1_timer_start(struct snd_timer *timer)
|
|
{
|
|
struct snd_emu10k1 *emu;
|
|
unsigned long flags;
|
|
unsigned int delay;
|
|
|
|
emu = snd_timer_chip(timer);
|
|
delay = timer->sticks - 1;
|
|
if (delay < 5 ) /* minimum time is 5 ticks */
|
|
delay = 5;
|
|
spin_lock_irqsave(&emu->reg_lock, flags);
|
|
snd_emu10k1_intr_enable(emu, INTE_INTERVALTIMERENB);
|
|
outw(delay & TIMER_RATE_MASK, emu->port + TIMER);
|
|
spin_unlock_irqrestore(&emu->reg_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_emu10k1_timer_stop(struct snd_timer *timer)
|
|
{
|
|
struct snd_emu10k1 *emu;
|
|
unsigned long flags;
|
|
|
|
emu = snd_timer_chip(timer);
|
|
spin_lock_irqsave(&emu->reg_lock, flags);
|
|
snd_emu10k1_intr_disable(emu, INTE_INTERVALTIMERENB);
|
|
spin_unlock_irqrestore(&emu->reg_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_emu10k1_timer_precise_resolution(struct snd_timer *timer,
|
|
unsigned long *num, unsigned long *den)
|
|
{
|
|
*num = 1;
|
|
*den = 48000;
|
|
return 0;
|
|
}
|
|
|
|
static struct snd_timer_hardware snd_emu10k1_timer_hw = {
|
|
.flags = SNDRV_TIMER_HW_AUTO,
|
|
.resolution = 20833, /* 1 sample @ 48KHZ = 20.833...us */
|
|
.ticks = 1024,
|
|
.start = snd_emu10k1_timer_start,
|
|
.stop = snd_emu10k1_timer_stop,
|
|
.precise_resolution = snd_emu10k1_timer_precise_resolution,
|
|
};
|
|
|
|
int snd_emu10k1_timer(struct snd_emu10k1 *emu, int device)
|
|
{
|
|
struct snd_timer *timer = NULL;
|
|
struct snd_timer_id tid;
|
|
int err;
|
|
|
|
tid.dev_class = SNDRV_TIMER_CLASS_CARD;
|
|
tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
|
|
tid.card = emu->card->number;
|
|
tid.device = device;
|
|
tid.subdevice = 0;
|
|
if ((err = snd_timer_new(emu->card, "EMU10K1", &tid, &timer)) >= 0) {
|
|
strcpy(timer->name, "EMU10K1 timer");
|
|
timer->private_data = emu;
|
|
timer->hw = snd_emu10k1_timer_hw;
|
|
}
|
|
emu->timer = timer;
|
|
return err;
|
|
}
|