diff options
Diffstat (limited to 'arch/arm/mach-ns9xxx/time-ns9360.c')
| -rw-r--r-- | arch/arm/mach-ns9xxx/time-ns9360.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/arch/arm/mach-ns9xxx/time-ns9360.c b/arch/arm/mach-ns9xxx/time-ns9360.c deleted file mode 100644 index 9ca32f55728b..000000000000 --- a/arch/arm/mach-ns9xxx/time-ns9360.c +++ /dev/null @@ -1,181 +0,0 @@ -/* - * arch/arm/mach-ns9xxx/time-ns9360.c - * - * Copyright (C) 2006,2007 by Digi International Inc. - * All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published by - * the Free Software Foundation. - */ -#include <linux/jiffies.h> -#include <linux/interrupt.h> -#include <linux/irq.h> -#include <linux/stringify.h> -#include <linux/clocksource.h> -#include <linux/clockchips.h> - -#include <mach/processor-ns9360.h> -#include <mach/regs-sys-ns9360.h> -#include <mach/irqs.h> -#include <mach/system.h> -#include "generic.h" - -#define TIMER_CLOCKSOURCE 0 -#define TIMER_CLOCKEVENT 1 -static u32 latch; - -static cycle_t ns9360_clocksource_read(struct clocksource *cs) -{ - return __raw_readl(SYS_TR(TIMER_CLOCKSOURCE)); -} - -static struct clocksource ns9360_clocksource = { - .name = "ns9360-timer" __stringify(TIMER_CLOCKSOURCE), - .rating = 300, - .read = ns9360_clocksource_read, - .mask = CLOCKSOURCE_MASK(32), - .flags = CLOCK_SOURCE_IS_CONTINUOUS, -}; - -static void ns9360_clockevent_setmode(enum clock_event_mode mode, - struct clock_event_device *clk) -{ - u32 tc = __raw_readl(SYS_TC(TIMER_CLOCKEVENT)); - - switch (mode) { - case CLOCK_EVT_MODE_PERIODIC: - __raw_writel(latch, SYS_TRC(TIMER_CLOCKEVENT)); - REGSET(tc, SYS_TCx, REN, EN); - REGSET(tc, SYS_TCx, INTS, EN); - REGSET(tc, SYS_TCx, TEN, EN); - break; - - case CLOCK_EVT_MODE_ONESHOT: - REGSET(tc, SYS_TCx, REN, DIS); - REGSET(tc, SYS_TCx, INTS, EN); - - /* fall through */ - - case CLOCK_EVT_MODE_UNUSED: - case CLOCK_EVT_MODE_SHUTDOWN: - case CLOCK_EVT_MODE_RESUME: - default: - REGSET(tc, SYS_TCx, TEN, DIS); - break; - } - - __raw_writel(tc, SYS_TC(TIMER_CLOCKEVENT)); -} - -static int ns9360_clockevent_setnextevent(unsigned long evt, - struct clock_event_device *clk) -{ - u32 tc = __raw_readl(SYS_TC(TIMER_CLOCKEVENT)); - - if (REGGET(tc, SYS_TCx, TEN)) { - REGSET(tc, SYS_TCx, TEN, DIS); - __raw_writel(tc, SYS_TC(TIMER_CLOCKEVENT)); - } - - REGSET(tc, SYS_TCx, TEN, EN); - - __raw_writel(evt, SYS_TRC(TIMER_CLOCKEVENT)); - - __raw_writel(tc, SYS_TC(TIMER_CLOCKEVENT)); - - return 0; -} - -static struct clock_event_device ns9360_clockevent_device = { - .name = "ns9360-timer" __stringify(TIMER_CLOCKEVENT), - .shift = 20, - .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, - .set_mode = ns9360_clockevent_setmode, - .set_next_event = ns9360_clockevent_setnextevent, -}; - -static irqreturn_t ns9360_clockevent_handler(int irq, void *dev_id) -{ - int timerno = irq - IRQ_NS9360_TIMER0; - u32 tc; - - struct clock_event_device *evt = &ns9360_clockevent_device; - - /* clear irq */ - tc = __raw_readl(SYS_TC(timerno)); - if (REGGET(tc, SYS_TCx, REN) == SYS_TCx_REN_DIS) { - REGSET(tc, SYS_TCx, TEN, DIS); - __raw_writel(tc, SYS_TC(timerno)); - } - REGSET(tc, SYS_TCx, INTC, SET); - __raw_writel(tc, SYS_TC(timerno)); - REGSET(tc, SYS_TCx, INTC, UNSET); - __raw_writel(tc, SYS_TC(timerno)); - - evt->event_handler(evt); - - return IRQ_HANDLED; -} - -static struct irqaction ns9360_clockevent_action = { - .name = "ns9360-timer" __stringify(TIMER_CLOCKEVENT), - .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, - .handler = ns9360_clockevent_handler, -}; - -static void __init ns9360_timer_init(void) -{ - int tc; - - tc = __raw_readl(SYS_TC(TIMER_CLOCKSOURCE)); - if (REGGET(tc, SYS_TCx, TEN)) { - REGSET(tc, SYS_TCx, TEN, DIS); - __raw_writel(tc, SYS_TC(TIMER_CLOCKSOURCE)); - } - - __raw_writel(0, SYS_TRC(TIMER_CLOCKSOURCE)); - - REGSET(tc, SYS_TCx, TEN, EN); - REGSET(tc, SYS_TCx, TDBG, STOP); - REGSET(tc, SYS_TCx, TLCS, CPU); - REGSET(tc, SYS_TCx, TM, IEE); - REGSET(tc, SYS_TCx, INTS, DIS); - REGSET(tc, SYS_TCx, UDS, UP); - REGSET(tc, SYS_TCx, TSZ, 32); - REGSET(tc, SYS_TCx, REN, EN); - - __raw_writel(tc, SYS_TC(TIMER_CLOCKSOURCE)); - - clocksource_register_hz(&ns9360_clocksource, ns9360_cpuclock()); - - latch = SH_DIV(ns9360_cpuclock(), HZ, 0); - - tc = __raw_readl(SYS_TC(TIMER_CLOCKEVENT)); - REGSET(tc, SYS_TCx, TEN, DIS); - REGSET(tc, SYS_TCx, TDBG, STOP); - REGSET(tc, SYS_TCx, TLCS, CPU); - REGSET(tc, SYS_TCx, TM, IEE); - REGSET(tc, SYS_TCx, INTS, DIS); - REGSET(tc, SYS_TCx, UDS, DOWN); - REGSET(tc, SYS_TCx, TSZ, 32); - REGSET(tc, SYS_TCx, REN, EN); - __raw_writel(tc, SYS_TC(TIMER_CLOCKEVENT)); - - ns9360_clockevent_device.mult = div_sc(ns9360_cpuclock(), - NSEC_PER_SEC, ns9360_clockevent_device.shift); - ns9360_clockevent_device.max_delta_ns = - clockevent_delta2ns(-1, &ns9360_clockevent_device); - ns9360_clockevent_device.min_delta_ns = - clockevent_delta2ns(1, &ns9360_clockevent_device); - - ns9360_clockevent_device.cpumask = cpumask_of(0); - clockevents_register_device(&ns9360_clockevent_device); - - setup_irq(IRQ_NS9360_TIMER0 + TIMER_CLOCKEVENT, - &ns9360_clockevent_action); -} - -struct sys_timer ns9360_timer = { - .init = ns9360_timer_init, -}; |