mirror of
https://github.com/torvalds/linux.git
synced 2025-11-04 10:40:15 +02:00
ALSA: timer: remove legacy rtctimer
There are no users of rtctimer left. Remove its code as this is the in-kernel user of the legacy PC RTC driver that will hopefully be removed at some point. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Alexandre Belloni
Takashi Iwai
parent
b610386c8a
commit
34ce71a96d
6 changed files with 1 additions and 222 deletions
|
|
@ -672,7 +672,7 @@ enum {
|
|||
|
||||
/* global timers (device member) */
|
||||
#define SNDRV_TIMER_GLOBAL_SYSTEM 0
|
||||
#define SNDRV_TIMER_GLOBAL_RTC 1
|
||||
#define SNDRV_TIMER_GLOBAL_RTC 1 /* unused */
|
||||
#define SNDRV_TIMER_GLOBAL_HPET 2
|
||||
#define SNDRV_TIMER_GLOBAL_HRTIMER 3
|
||||
|
||||
|
|
|
|||
|
|
@ -141,35 +141,6 @@ config SND_SEQ_HRTIMER_DEFAULT
|
|||
Say Y here to use the HR-timer backend as the default sequencer
|
||||
timer.
|
||||
|
||||
config SND_RTCTIMER
|
||||
tristate "RTC Timer support"
|
||||
depends on RTC
|
||||
select SND_TIMER
|
||||
help
|
||||
Say Y here to enable RTC timer support for ALSA. ALSA uses
|
||||
the RTC timer as a precise timing source and maps the RTC
|
||||
timer to ALSA's timer interface. The ALSA sequencer code also
|
||||
can use this timing source.
|
||||
|
||||
To compile this driver as a module, choose M here: the module
|
||||
will be called snd-rtctimer.
|
||||
|
||||
Note that this option is exclusive with the new RTC drivers
|
||||
(CONFIG_RTC_CLASS) since this requires the old API.
|
||||
|
||||
config SND_SEQ_RTCTIMER_DEFAULT
|
||||
bool "Use RTC as default sequencer timer"
|
||||
depends on SND_RTCTIMER && SND_SEQUENCER
|
||||
depends on !SND_SEQ_HRTIMER_DEFAULT
|
||||
default y
|
||||
help
|
||||
Say Y here to use the RTC timer as the default sequencer
|
||||
timer. This is strongly recommended because it ensures
|
||||
precise MIDI timing even when the system timer runs at less
|
||||
than 1000 Hz.
|
||||
|
||||
If in doubt, say Y.
|
||||
|
||||
config SND_DYNAMIC_MINORS
|
||||
bool "Dynamic device file minor numbers"
|
||||
help
|
||||
|
|
|
|||
|
|
@ -37,7 +37,6 @@ obj-$(CONFIG_SND) += snd.o
|
|||
obj-$(CONFIG_SND_HWDEP) += snd-hwdep.o
|
||||
obj-$(CONFIG_SND_TIMER) += snd-timer.o
|
||||
obj-$(CONFIG_SND_HRTIMER) += snd-hrtimer.o
|
||||
obj-$(CONFIG_SND_RTCTIMER) += snd-rtctimer.o
|
||||
obj-$(CONFIG_SND_PCM) += snd-pcm.o
|
||||
obj-$(CONFIG_SND_DMAENGINE_PCM) += snd-pcm-dmaengine.o
|
||||
obj-$(CONFIG_SND_RAWMIDI) += snd-rawmidi.o
|
||||
|
|
|
|||
|
|
@ -1,187 +0,0 @@
|
|||
/*
|
||||
* RTC based high-frequency timer
|
||||
*
|
||||
* Copyright (C) 2000 Takashi Iwai
|
||||
* based on rtctimer.c by Steve Ratcliffe
|
||||
*
|
||||
* 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/init.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/log2.h>
|
||||
#include <sound/core.h>
|
||||
#include <sound/timer.h>
|
||||
|
||||
#if IS_ENABLED(CONFIG_RTC)
|
||||
|
||||
#include <linux/mc146818rtc.h>
|
||||
|
||||
#define RTC_FREQ 1024 /* default frequency */
|
||||
#define NANO_SEC 1000000000L /* 10^9 in sec */
|
||||
|
||||
/*
|
||||
* prototypes
|
||||
*/
|
||||
static int rtctimer_open(struct snd_timer *t);
|
||||
static int rtctimer_close(struct snd_timer *t);
|
||||
static int rtctimer_start(struct snd_timer *t);
|
||||
static int rtctimer_stop(struct snd_timer *t);
|
||||
|
||||
|
||||
/*
|
||||
* The hardware dependent description for this timer.
|
||||
*/
|
||||
static struct snd_timer_hardware rtc_hw = {
|
||||
.flags = SNDRV_TIMER_HW_AUTO |
|
||||
SNDRV_TIMER_HW_FIRST |
|
||||
SNDRV_TIMER_HW_TASKLET,
|
||||
.ticks = 100000000L, /* FIXME: XXX */
|
||||
.open = rtctimer_open,
|
||||
.close = rtctimer_close,
|
||||
.start = rtctimer_start,
|
||||
.stop = rtctimer_stop,
|
||||
};
|
||||
|
||||
static int rtctimer_freq = RTC_FREQ; /* frequency */
|
||||
static struct snd_timer *rtctimer;
|
||||
static struct tasklet_struct rtc_tasklet;
|
||||
static rtc_task_t rtc_task;
|
||||
|
||||
|
||||
static int
|
||||
rtctimer_open(struct snd_timer *t)
|
||||
{
|
||||
int err;
|
||||
|
||||
err = rtc_register(&rtc_task);
|
||||
if (err < 0)
|
||||
return err;
|
||||
t->private_data = &rtc_task;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
rtctimer_close(struct snd_timer *t)
|
||||
{
|
||||
rtc_task_t *rtc = t->private_data;
|
||||
if (rtc) {
|
||||
rtc_unregister(rtc);
|
||||
tasklet_kill(&rtc_tasklet);
|
||||
t->private_data = NULL;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
rtctimer_start(struct snd_timer *timer)
|
||||
{
|
||||
rtc_task_t *rtc = timer->private_data;
|
||||
if (snd_BUG_ON(!rtc))
|
||||
return -EINVAL;
|
||||
rtc_control(rtc, RTC_IRQP_SET, rtctimer_freq);
|
||||
rtc_control(rtc, RTC_PIE_ON, 0);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
rtctimer_stop(struct snd_timer *timer)
|
||||
{
|
||||
rtc_task_t *rtc = timer->private_data;
|
||||
if (snd_BUG_ON(!rtc))
|
||||
return -EINVAL;
|
||||
rtc_control(rtc, RTC_PIE_OFF, 0);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void rtctimer_tasklet(unsigned long data)
|
||||
{
|
||||
snd_timer_interrupt((struct snd_timer *)data, 1);
|
||||
}
|
||||
|
||||
/*
|
||||
* interrupt
|
||||
*/
|
||||
static void rtctimer_interrupt(void *private_data)
|
||||
{
|
||||
tasklet_schedule(private_data);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* ENTRY functions
|
||||
*/
|
||||
static int __init rtctimer_init(void)
|
||||
{
|
||||
int err;
|
||||
struct snd_timer *timer;
|
||||
|
||||
if (rtctimer_freq < 2 || rtctimer_freq > 8192 ||
|
||||
!is_power_of_2(rtctimer_freq)) {
|
||||
pr_err("ALSA: rtctimer: invalid frequency %d\n", rtctimer_freq);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Create a new timer and set up the fields */
|
||||
err = snd_timer_global_new("rtc", SNDRV_TIMER_GLOBAL_RTC, &timer);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
timer->module = THIS_MODULE;
|
||||
strcpy(timer->name, "RTC timer");
|
||||
timer->hw = rtc_hw;
|
||||
timer->hw.resolution = NANO_SEC / rtctimer_freq;
|
||||
|
||||
tasklet_init(&rtc_tasklet, rtctimer_tasklet, (unsigned long)timer);
|
||||
|
||||
/* set up RTC callback */
|
||||
rtc_task.func = rtctimer_interrupt;
|
||||
rtc_task.private_data = &rtc_tasklet;
|
||||
|
||||
err = snd_timer_global_register(timer);
|
||||
if (err < 0) {
|
||||
snd_timer_global_free(timer);
|
||||
return err;
|
||||
}
|
||||
rtctimer = timer; /* remember this */
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void __exit rtctimer_exit(void)
|
||||
{
|
||||
if (rtctimer) {
|
||||
snd_timer_global_free(rtctimer);
|
||||
rtctimer = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* exported stuff
|
||||
*/
|
||||
module_init(rtctimer_init)
|
||||
module_exit(rtctimer_exit)
|
||||
|
||||
module_param(rtctimer_freq, int, 0444);
|
||||
MODULE_PARM_DESC(rtctimer_freq, "timer frequency in Hz");
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
MODULE_ALIAS("snd-timer-" __stringify(SNDRV_TIMER_GLOBAL_RTC));
|
||||
|
||||
#endif /* IS_ENABLED(CONFIG_RTC) */
|
||||
|
|
@ -47,8 +47,6 @@ int seq_default_timer_card = -1;
|
|||
int seq_default_timer_device =
|
||||
#ifdef CONFIG_SND_SEQ_HRTIMER_DEFAULT
|
||||
SNDRV_TIMER_GLOBAL_HRTIMER
|
||||
#elif defined(CONFIG_SND_SEQ_RTCTIMER_DEFAULT)
|
||||
SNDRV_TIMER_GLOBAL_RTC
|
||||
#else
|
||||
SNDRV_TIMER_GLOBAL_SYSTEM
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -37,8 +37,6 @@
|
|||
|
||||
#if IS_ENABLED(CONFIG_SND_HRTIMER)
|
||||
#define DEFAULT_TIMER_LIMIT 4
|
||||
#elif IS_ENABLED(CONFIG_SND_RTCTIMER)
|
||||
#define DEFAULT_TIMER_LIMIT 2
|
||||
#else
|
||||
#define DEFAULT_TIMER_LIMIT 1
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in a new issue