diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-ks8695/time.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/arm/mach-ks8695/time.c | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-ks8695/time.c b/ANDROID_3.4.5/arch/arm/mach-ks8695/time.c deleted file mode 100644 index ec783a30..00000000 --- a/ANDROID_3.4.5/arch/arm/mach-ks8695/time.c +++ /dev/null @@ -1,130 +0,0 @@ -/* - * arch/arm/mach-ks8695/time.c - * - * Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk> - * Copyright (C) 2006 Simtec Electronics - * - * 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/irq.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/io.h> - -#include <asm/mach/time.h> -#include <asm/system_misc.h> - -#include <mach/regs-timer.h> -#include <mach/regs-irq.h> - -#include "generic.h" - -/* - * Returns number of ms since last clock interrupt. Note that interrupts - * will have been disabled by do_gettimeoffset() - */ -static unsigned long ks8695_gettimeoffset (void) -{ - unsigned long elapsed, tick2, intpending; - - /* - * Get the current number of ticks. Note that there is a race - * condition between us reading the timer and checking for an - * interrupt. We solve this by ensuring that the counter has not - * reloaded between our two reads. - */ - elapsed = __raw_readl(KS8695_TMR_VA + KS8695_T1TC) + __raw_readl(KS8695_TMR_VA + KS8695_T1PD); - do { - tick2 = elapsed; - intpending = __raw_readl(KS8695_IRQ_VA + KS8695_INTST) & (1 << KS8695_IRQ_TIMER1); - elapsed = __raw_readl(KS8695_TMR_VA + KS8695_T1TC) + __raw_readl(KS8695_TMR_VA + KS8695_T1PD); - } while (elapsed > tick2); - - /* Convert to number of ticks expired (not remaining) */ - elapsed = (CLOCK_TICK_RATE / HZ) - elapsed; - - /* Is interrupt pending? If so, then timer has been reloaded already. */ - if (intpending) - elapsed += (CLOCK_TICK_RATE / HZ); - - /* Convert ticks to usecs */ - return (unsigned long)(elapsed * (tick_nsec / 1000)) / LATCH; -} - -/* - * IRQ handler for the timer. - */ -static irqreturn_t ks8695_timer_interrupt(int irq, void *dev_id) -{ - timer_tick(); - return IRQ_HANDLED; -} - -static struct irqaction ks8695_timer_irq = { - .name = "ks8695_tick", - .flags = IRQF_DISABLED | IRQF_TIMER, - .handler = ks8695_timer_interrupt, -}; - -static void ks8695_timer_setup(void) -{ - unsigned long tmout = CLOCK_TICK_RATE / HZ; - unsigned long tmcon; - - /* disable timer1 */ - tmcon = __raw_readl(KS8695_TMR_VA + KS8695_TMCON); - __raw_writel(tmcon & ~TMCON_T1EN, KS8695_TMR_VA + KS8695_TMCON); - - __raw_writel(tmout / 2, KS8695_TMR_VA + KS8695_T1TC); - __raw_writel(tmout / 2, KS8695_TMR_VA + KS8695_T1PD); - - /* re-enable timer1 */ - __raw_writel(tmcon | TMCON_T1EN, KS8695_TMR_VA + KS8695_TMCON); -} - -static void __init ks8695_timer_init (void) -{ - ks8695_timer_setup(); - - /* Enable timer interrupts */ - setup_irq(KS8695_IRQ_TIMER1, &ks8695_timer_irq); -} - -struct sys_timer ks8695_timer = { - .init = ks8695_timer_init, - .offset = ks8695_gettimeoffset, - .resume = ks8695_timer_setup, -}; - -void ks8695_restart(char mode, const char *cmd) -{ - unsigned int reg; - - if (mode == 's') - soft_restart(0); - - /* disable timer0 */ - reg = __raw_readl(KS8695_TMR_VA + KS8695_TMCON); - __raw_writel(reg & ~TMCON_T0EN, KS8695_TMR_VA + KS8695_TMCON); - - /* enable watchdog mode */ - __raw_writel((10 << 8) | T0TC_WATCHDOG, KS8695_TMR_VA + KS8695_T0TC); - - /* re-enable timer0 */ - __raw_writel(reg | TMCON_T0EN, KS8695_TMR_VA + KS8695_TMCON); -} |