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Diffstat (limited to 'sound/core/seq/seq_timer.c')
-rw-r--r--sound/core/seq/seq_timer.c165
1 files changed, 92 insertions, 73 deletions
diff --git a/sound/core/seq/seq_timer.c b/sound/core/seq/seq_timer.c
index b57a3c07ff6..e73605393ee 100644
--- a/sound/core/seq/seq_timer.c
+++ b/sound/core/seq/seq_timer.c
@@ -1,7 +1,7 @@
/*
* ALSA sequencer Timer
* Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
- * Jaroslav Kysela <perex@suse.cz>
+ * Jaroslav Kysela <perex@perex.cz>
*
*
* This program is free software; you can redistribute it and/or modify
@@ -20,49 +20,44 @@
*
*/
-#include <sound/driver.h>
#include <sound/core.h>
#include <linux/slab.h>
#include "seq_timer.h"
#include "seq_queue.h"
#include "seq_info.h"
-extern int seq_default_timer_class;
-extern int seq_default_timer_sclass;
-extern int seq_default_timer_card;
-extern int seq_default_timer_device;
-extern int seq_default_timer_subdevice;
-extern int seq_default_timer_resolution;
+/* allowed sequencer timer frequencies, in Hz */
+#define MIN_FREQUENCY 10
+#define MAX_FREQUENCY 6250
+#define DEFAULT_FREQUENCY 1000
#define SKEW_BASE 0x10000 /* 16bit shift */
-static void snd_seq_timer_set_tick_resolution(seq_timer_tick_t *tick,
- int tempo, int ppq, int nticks)
+static void snd_seq_timer_set_tick_resolution(struct snd_seq_timer *tmr)
{
- if (tempo < 1000000)
- tick->resolution = (tempo * 1000) / ppq;
+ if (tmr->tempo < 1000000)
+ tmr->tick.resolution = (tmr->tempo * 1000) / tmr->ppq;
else {
/* might overflow.. */
unsigned int s;
- s = tempo % ppq;
- s = (s * 1000) / ppq;
- tick->resolution = (tempo / ppq) * 1000;
- tick->resolution += s;
+ s = tmr->tempo % tmr->ppq;
+ s = (s * 1000) / tmr->ppq;
+ tmr->tick.resolution = (tmr->tempo / tmr->ppq) * 1000;
+ tmr->tick.resolution += s;
}
- if (tick->resolution <= 0)
- tick->resolution = 1;
- tick->resolution *= nticks;
- snd_seq_timer_update_tick(tick, 0);
+ if (tmr->tick.resolution <= 0)
+ tmr->tick.resolution = 1;
+ snd_seq_timer_update_tick(&tmr->tick, 0);
}
/* create new timer (constructor) */
-seq_timer_t *snd_seq_timer_new(void)
+struct snd_seq_timer *snd_seq_timer_new(void)
{
- seq_timer_t *tmr;
+ struct snd_seq_timer *tmr;
tmr = kzalloc(sizeof(*tmr), GFP_KERNEL);
if (tmr == NULL) {
- snd_printd("malloc failed for snd_seq_timer_new() \n");
+ pr_debug("ALSA: seq: malloc failed for snd_seq_timer_new() \n");
return NULL;
}
spin_lock_init(&tmr->lock);
@@ -77,13 +72,13 @@ seq_timer_t *snd_seq_timer_new(void)
}
/* delete timer (destructor) */
-void snd_seq_timer_delete(seq_timer_t **tmr)
+void snd_seq_timer_delete(struct snd_seq_timer **tmr)
{
- seq_timer_t *t = *tmr;
+ struct snd_seq_timer *t = *tmr;
*tmr = NULL;
if (t == NULL) {
- snd_printd("oops: snd_seq_timer_delete() called with NULL timer\n");
+ pr_debug("ALSA: seq: snd_seq_timer_delete() called with NULL timer\n");
return;
}
t->running = 0;
@@ -95,12 +90,12 @@ void snd_seq_timer_delete(seq_timer_t **tmr)
kfree(t);
}
-void snd_seq_timer_defaults(seq_timer_t * tmr)
+void snd_seq_timer_defaults(struct snd_seq_timer * tmr)
{
/* setup defaults */
tmr->ppq = 96; /* 96 PPQ */
tmr->tempo = 500000; /* 120 BPM */
- snd_seq_timer_set_tick_resolution(&tmr->tick, tmr->tempo, tmr->ppq, 1);
+ snd_seq_timer_set_tick_resolution(tmr);
tmr->running = 0;
tmr->type = SNDRV_SEQ_TIMER_ALSA;
@@ -114,7 +109,7 @@ void snd_seq_timer_defaults(seq_timer_t * tmr)
tmr->skew = tmr->skew_base = SKEW_BASE;
}
-void snd_seq_timer_reset(seq_timer_t * tmr)
+void snd_seq_timer_reset(struct snd_seq_timer * tmr)
{
unsigned long flags;
@@ -132,13 +127,13 @@ void snd_seq_timer_reset(seq_timer_t * tmr)
/* called by timer interrupt routine. the period time since previous invocation is passed */
-static void snd_seq_timer_interrupt(snd_timer_instance_t *timeri,
+static void snd_seq_timer_interrupt(struct snd_timer_instance *timeri,
unsigned long resolution,
unsigned long ticks)
{
unsigned long flags;
- queue_t *q = (queue_t *)timeri->callback_data;
- seq_timer_t *tmr;
+ struct snd_seq_queue *q = timeri->callback_data;
+ struct snd_seq_timer *tmr;
if (q == NULL)
return;
@@ -173,28 +168,30 @@ static void snd_seq_timer_interrupt(snd_timer_instance_t *timeri,
}
/* set current tempo */
-int snd_seq_timer_set_tempo(seq_timer_t * tmr, int tempo)
+int snd_seq_timer_set_tempo(struct snd_seq_timer * tmr, int tempo)
{
unsigned long flags;
- snd_assert(tmr, return -EINVAL);
+ if (snd_BUG_ON(!tmr))
+ return -EINVAL;
if (tempo <= 0)
return -EINVAL;
spin_lock_irqsave(&tmr->lock, flags);
if ((unsigned int)tempo != tmr->tempo) {
tmr->tempo = tempo;
- snd_seq_timer_set_tick_resolution(&tmr->tick, tmr->tempo, tmr->ppq, 1);
+ snd_seq_timer_set_tick_resolution(tmr);
}
spin_unlock_irqrestore(&tmr->lock, flags);
return 0;
}
/* set current ppq */
-int snd_seq_timer_set_ppq(seq_timer_t * tmr, int ppq)
+int snd_seq_timer_set_ppq(struct snd_seq_timer * tmr, int ppq)
{
unsigned long flags;
- snd_assert(tmr, return -EINVAL);
+ if (snd_BUG_ON(!tmr))
+ return -EINVAL;
if (ppq <= 0)
return -EINVAL;
spin_lock_irqsave(&tmr->lock, flags);
@@ -202,22 +199,24 @@ int snd_seq_timer_set_ppq(seq_timer_t * tmr, int ppq)
/* refuse to change ppq on running timers */
/* because it will upset the song position (ticks) */
spin_unlock_irqrestore(&tmr->lock, flags);
- snd_printd("seq: cannot change ppq of a running timer\n");
+ pr_debug("ALSA: seq: cannot change ppq of a running timer\n");
return -EBUSY;
}
tmr->ppq = ppq;
- snd_seq_timer_set_tick_resolution(&tmr->tick, tmr->tempo, tmr->ppq, 1);
+ snd_seq_timer_set_tick_resolution(tmr);
spin_unlock_irqrestore(&tmr->lock, flags);
return 0;
}
/* set current tick position */
-int snd_seq_timer_set_position_tick(seq_timer_t *tmr, snd_seq_tick_time_t position)
+int snd_seq_timer_set_position_tick(struct snd_seq_timer *tmr,
+ snd_seq_tick_time_t position)
{
unsigned long flags;
- snd_assert(tmr, return -EINVAL);
+ if (snd_BUG_ON(!tmr))
+ return -EINVAL;
spin_lock_irqsave(&tmr->lock, flags);
tmr->tick.cur_tick = position;
@@ -227,11 +226,13 @@ int snd_seq_timer_set_position_tick(seq_timer_t *tmr, snd_seq_tick_time_t positi
}
/* set current real-time position */
-int snd_seq_timer_set_position_time(seq_timer_t *tmr, snd_seq_real_time_t position)
+int snd_seq_timer_set_position_time(struct snd_seq_timer *tmr,
+ snd_seq_real_time_t position)
{
unsigned long flags;
- snd_assert(tmr, return -EINVAL);
+ if (snd_BUG_ON(!tmr))
+ return -EINVAL;
snd_seq_sanity_real_time(&position);
spin_lock_irqsave(&tmr->lock, flags);
@@ -241,15 +242,17 @@ int snd_seq_timer_set_position_time(seq_timer_t *tmr, snd_seq_real_time_t positi
}
/* set timer skew */
-int snd_seq_timer_set_skew(seq_timer_t *tmr, unsigned int skew, unsigned int base)
+int snd_seq_timer_set_skew(struct snd_seq_timer *tmr, unsigned int skew,
+ unsigned int base)
{
unsigned long flags;
- snd_assert(tmr, return -EINVAL);
+ if (snd_BUG_ON(!tmr))
+ return -EINVAL;
/* FIXME */
if (base != SKEW_BASE) {
- snd_printd("invalid skew base 0x%x\n", base);
+ pr_debug("ALSA: seq: invalid skew base 0x%x\n", base);
return -EINVAL;
}
spin_lock_irqsave(&tmr->lock, flags);
@@ -258,15 +261,16 @@ int snd_seq_timer_set_skew(seq_timer_t *tmr, unsigned int skew, unsigned int bas
return 0;
}
-int snd_seq_timer_open(queue_t *q)
+int snd_seq_timer_open(struct snd_seq_queue *q)
{
- snd_timer_instance_t *t;
- seq_timer_t *tmr;
+ struct snd_timer_instance *t;
+ struct snd_seq_timer *tmr;
char str[32];
int err;
tmr = q->timer;
- snd_assert(tmr != NULL, return -EINVAL);
+ if (snd_BUG_ON(!tmr))
+ return -EINVAL;
if (tmr->timeri)
return -EBUSY;
sprintf(str, "sequencer queue %i", q->queue);
@@ -278,7 +282,7 @@ int snd_seq_timer_open(queue_t *q)
if (err < 0 && tmr->alsa_id.dev_class != SNDRV_TIMER_CLASS_SLAVE) {
if (tmr->alsa_id.dev_class != SNDRV_TIMER_CLASS_GLOBAL ||
tmr->alsa_id.device != SNDRV_TIMER_GLOBAL_SYSTEM) {
- snd_timer_id_t tid;
+ struct snd_timer_id tid;
memset(&tid, 0, sizeof(tid));
tid.dev_class = SNDRV_TIMER_CLASS_GLOBAL;
tid.dev_sclass = SNDRV_TIMER_SCLASS_SEQUENCER;
@@ -286,10 +290,10 @@ int snd_seq_timer_open(queue_t *q)
tid.device = SNDRV_TIMER_GLOBAL_SYSTEM;
err = snd_timer_open(&t, str, &tid, q->queue);
}
- if (err < 0) {
- snd_printk(KERN_ERR "seq fatal error: cannot create timer (%i)\n", err);
- return err;
- }
+ }
+ if (err < 0) {
+ pr_err("ALSA: seq fatal error: cannot create timer (%i)\n", err);
+ return err;
}
t->callback = snd_seq_timer_interrupt;
t->callback_data = q;
@@ -298,12 +302,13 @@ int snd_seq_timer_open(queue_t *q)
return 0;
}
-int snd_seq_timer_close(queue_t *q)
+int snd_seq_timer_close(struct snd_seq_queue *q)
{
- seq_timer_t *tmr;
+ struct snd_seq_timer *tmr;
tmr = q->timer;
- snd_assert(tmr != NULL, return -EINVAL);
+ if (snd_BUG_ON(!tmr))
+ return -EINVAL;
if (tmr->timeri) {
snd_timer_stop(tmr->timeri);
snd_timer_close(tmr->timeri);
@@ -312,7 +317,7 @@ int snd_seq_timer_close(queue_t *q)
return 0;
}
-int snd_seq_timer_stop(seq_timer_t * tmr)
+int snd_seq_timer_stop(struct snd_seq_timer * tmr)
{
if (! tmr->timeri)
return -EINVAL;
@@ -323,20 +328,30 @@ int snd_seq_timer_stop(seq_timer_t * tmr)
return 0;
}
-static int initialize_timer(seq_timer_t *tmr)
+static int initialize_timer(struct snd_seq_timer *tmr)
{
- snd_timer_t *t;
+ struct snd_timer *t;
+ unsigned long freq;
+
t = tmr->timeri->timer;
- snd_assert(t, return -EINVAL);
+ if (snd_BUG_ON(!t))
+ return -EINVAL;
+
+ freq = tmr->preferred_resolution;
+ if (!freq)
+ freq = DEFAULT_FREQUENCY;
+ else if (freq < MIN_FREQUENCY)
+ freq = MIN_FREQUENCY;
+ else if (freq > MAX_FREQUENCY)
+ freq = MAX_FREQUENCY;
tmr->ticks = 1;
- if (tmr->preferred_resolution &&
- ! (t->hw.flags & SNDRV_TIMER_HW_SLAVE)) {
+ if (!(t->hw.flags & SNDRV_TIMER_HW_SLAVE)) {
unsigned long r = t->hw.resolution;
if (! r && t->hw.c_resolution)
r = t->hw.c_resolution(t);
if (r) {
- tmr->ticks = (unsigned int)(1000000000uL / (r * tmr->preferred_resolution));
+ tmr->ticks = (unsigned int)(1000000000uL / (r * freq));
if (! tmr->ticks)
tmr->ticks = 1;
}
@@ -345,7 +360,7 @@ static int initialize_timer(seq_timer_t *tmr)
return 0;
}
-int snd_seq_timer_start(seq_timer_t * tmr)
+int snd_seq_timer_start(struct snd_seq_timer * tmr)
{
if (! tmr->timeri)
return -EINVAL;
@@ -360,7 +375,7 @@ int snd_seq_timer_start(seq_timer_t * tmr)
return 0;
}
-int snd_seq_timer_continue(seq_timer_t * tmr)
+int snd_seq_timer_continue(struct snd_seq_timer * tmr)
{
if (! tmr->timeri)
return -EINVAL;
@@ -378,7 +393,7 @@ int snd_seq_timer_continue(seq_timer_t * tmr)
}
/* return current 'real' time. use timeofday() to get better granularity. */
-snd_seq_real_time_t snd_seq_timer_get_cur_time(seq_timer_t *tmr)
+snd_seq_real_time_t snd_seq_timer_get_cur_time(struct snd_seq_timer *tmr)
{
snd_seq_real_time_t cur_time;
@@ -403,19 +418,21 @@ snd_seq_real_time_t snd_seq_timer_get_cur_time(seq_timer_t *tmr)
/* TODO: use interpolation on tick queue (will only be useful for very
high PPQ values) */
-snd_seq_tick_time_t snd_seq_timer_get_cur_tick(seq_timer_t *tmr)
+snd_seq_tick_time_t snd_seq_timer_get_cur_tick(struct snd_seq_timer *tmr)
{
return tmr->tick.cur_tick;
}
+#ifdef CONFIG_PROC_FS
/* exported to seq_info.c */
-void snd_seq_info_timer_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
+void snd_seq_info_timer_read(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
{
int idx;
- queue_t *q;
- seq_timer_t *tmr;
- snd_timer_instance_t *ti;
+ struct snd_seq_queue *q;
+ struct snd_seq_timer *tmr;
+ struct snd_timer_instance *ti;
unsigned long resolution;
for (idx = 0; idx < SNDRV_SEQ_MAX_QUEUES; idx++) {
@@ -434,3 +451,5 @@ void snd_seq_info_timer_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer
queuefree(q);
}
}
+#endif /* CONFIG_PROC_FS */
+
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 18:31:59 +0000