diff options
Diffstat (limited to 'arch/score/kernel/time.c')
-rw-r--r-- | arch/score/kernel/time.c | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/arch/score/kernel/time.c b/arch/score/kernel/time.c deleted file mode 100644 index 29aafc741f69..000000000000 --- a/arch/score/kernel/time.c +++ /dev/null @@ -1,90 +0,0 @@ -/* - * arch/score/kernel/time.c - * - * Score Processor version. - * - * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. - * Chen Liqin <liqin.chen@sunplusct.com> - * Lennox Wu <lennox.wu@sunplusct.com> - * - * 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, see the file COPYING, or write - * to the Free Software Foundation, Inc., - * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include <linux/clockchips.h> -#include <linux/interrupt.h> - -#include <asm/scoreregs.h> - -static irqreturn_t timer_interrupt(int irq, void *dev_id) -{ - struct clock_event_device *evdev = dev_id; - - /* clear timer interrupt flag */ - outl(1, P_TIMER0_CPP_REG); - evdev->event_handler(evdev); - - return IRQ_HANDLED; -} - -static struct irqaction timer_irq = { - .handler = timer_interrupt, - .flags = IRQF_TIMER, - .name = "timer", -}; - -static int score_timer_set_next_event(unsigned long delta, - struct clock_event_device *evdev) -{ - outl((TMR_M_PERIODIC | TMR_IE_ENABLE), P_TIMER0_CTRL); - outl(delta, P_TIMER0_PRELOAD); - outl(inl(P_TIMER0_CTRL) | TMR_ENABLE, P_TIMER0_CTRL); - - return 0; -} - -static int score_timer_set_periodic(struct clock_event_device *evt) -{ - outl((TMR_M_PERIODIC | TMR_IE_ENABLE), P_TIMER0_CTRL); - outl(SYSTEM_CLOCK / HZ, P_TIMER0_PRELOAD); - outl(inl(P_TIMER0_CTRL) | TMR_ENABLE, P_TIMER0_CTRL); - return 0; -} - -static struct clock_event_device score_clockevent = { - .name = "score_clockevent", - .features = CLOCK_EVT_FEAT_PERIODIC, - .shift = 16, - .set_next_event = score_timer_set_next_event, - .set_state_periodic = score_timer_set_periodic, -}; - -void __init time_init(void) -{ - timer_irq.dev_id = &score_clockevent; - setup_irq(IRQ_TIMER , &timer_irq); - - /* setup COMPARE clockevent */ - score_clockevent.mult = div_sc(SYSTEM_CLOCK, NSEC_PER_SEC, - score_clockevent.shift); - score_clockevent.max_delta_ns = clockevent_delta2ns((u32)~0, - &score_clockevent); - score_clockevent.max_delta_ticks = (u32)~0; - score_clockevent.min_delta_ns = clockevent_delta2ns(50, - &score_clockevent) + 1; - score_clockevent.min_delta_ticks = 50; - score_clockevent.cpumask = cpumask_of(0); - clockevents_register_device(&score_clockevent); -} |