diff options
Diffstat (limited to 'sound/oss/emu10k1/timer.c')
| -rw-r--r-- | sound/oss/emu10k1/timer.c | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/sound/oss/emu10k1/timer.c b/sound/oss/emu10k1/timer.c deleted file mode 100644 index d10d307..0000000 --- a/sound/oss/emu10k1/timer.c +++ /dev/null @@ -1,176 +0,0 @@ - -/* - ********************************************************************** - * timer.c - * Copyright (C) 1999, 2000 Creative Labs, inc. - * - ********************************************************************** - * - * 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., 675 Mass Ave, Cambridge, MA 02139, - * USA. - * - ********************************************************************** - */ - -/* 3/6/2000 Improved support for different timer delays Rui Sousa */ - -/* 4/3/2000 Implemented timer list using list.h Rui Sousa */ - -#include "hwaccess.h" -#include "8010.h" -#include "irqmgr.h" -#include "timer.h" - -/* Try to schedule only once per fragment */ - -void emu10k1_timer_irqhandler(struct emu10k1_card *card) -{ - struct emu_timer *t; - struct list_head *entry; - - spin_lock(&card->timer_lock); - - list_for_each(entry, &card->timers) { - t = list_entry(entry, struct emu_timer, list); - - if (t->state & TIMER_STATE_ACTIVE) { - t->count++; - if (t->count == t->count_max) { - t->count = 0; - tasklet_hi_schedule(&t->tasklet); - } - } - } - - spin_unlock(&card->timer_lock); - - return; -} - -void emu10k1_timer_install(struct emu10k1_card *card, struct emu_timer *timer, u16 delay) -{ - struct emu_timer *t; - struct list_head *entry; - unsigned long flags; - - if (delay < 5) - delay = 5; - - timer->delay = delay; - timer->state = TIMER_STATE_INSTALLED; - - spin_lock_irqsave(&card->timer_lock, flags); - - timer->count_max = timer->delay / (card->timer_delay < 1024 ? card->timer_delay : 1024); - timer->count = timer->count_max - 1; - - list_add(&timer->list, &card->timers); - - if (card->timer_delay > delay) { - if (card->timer_delay == TIMER_STOPPED) - emu10k1_irq_enable(card, INTE_INTERVALTIMERENB); - - card->timer_delay = delay; - delay = (delay < 1024 ? delay : 1024); - - emu10k1_timer_set(card, delay); - - list_for_each(entry, &card->timers) { - t = list_entry(entry, struct emu_timer, list); - - t->count_max = t->delay / delay; - /* don't want to think much, just force scheduling - on the next interrupt */ - t->count = t->count_max - 1; - } - - DPD(2, "timer rate --> %u\n", delay); - } - - spin_unlock_irqrestore(&card->timer_lock, flags); - - return; -} - -void emu10k1_timer_uninstall(struct emu10k1_card *card, struct emu_timer *timer) -{ - struct emu_timer *t; - struct list_head *entry; - u16 delay = TIMER_STOPPED; - unsigned long flags; - - if (timer->state == TIMER_STATE_UNINSTALLED) - return; - - spin_lock_irqsave(&card->timer_lock, flags); - - list_del(&timer->list); - - list_for_each(entry, &card->timers) { - t = list_entry(entry, struct emu_timer, list); - - if (t->delay < delay) - delay = t->delay; - } - - if (card->timer_delay != delay) { - card->timer_delay = delay; - - if (delay == TIMER_STOPPED) - emu10k1_irq_disable(card, INTE_INTERVALTIMERENB); - else { - delay = (delay < 1024 ? delay : 1024); - - emu10k1_timer_set(card, delay); - - list_for_each(entry, &card->timers) { - t = list_entry(entry, struct emu_timer, list); - - t->count_max = t->delay / delay; - t->count = t->count_max - 1; - } - } - - DPD(2, "timer rate --> %u\n", delay); - } - - spin_unlock_irqrestore(&card->timer_lock, flags); - - timer->state = TIMER_STATE_UNINSTALLED; - - return; -} - -void emu10k1_timer_enable(struct emu10k1_card *card, struct emu_timer *timer) -{ - unsigned long flags; - - spin_lock_irqsave(&card->timer_lock, flags); - timer->state |= TIMER_STATE_ACTIVE; - spin_unlock_irqrestore(&card->timer_lock, flags); - - return; -} - -void emu10k1_timer_disable(struct emu10k1_card *card, struct emu_timer *timer) -{ - unsigned long flags; - - spin_lock_irqsave(&card->timer_lock, flags); - timer->state &= ~TIMER_STATE_ACTIVE; - spin_unlock_irqrestore(&card->timer_lock, flags); - - return; -} |