diff options
49 files changed, 520 insertions, 537 deletions
diff --git a/Documentation/devicetree/bindings/arm/twd.txt b/Documentation/devicetree/bindings/arm/twd.txt new file mode 100644 index 00000000000..75b8610939f --- /dev/null +++ b/Documentation/devicetree/bindings/arm/twd.txt @@ -0,0 +1,48 @@ +* ARM Timer Watchdog + +ARM 11MP, Cortex-A5 and Cortex-A9 are often associated with a per-core +Timer-Watchdog (aka TWD), which provides both a per-cpu local timer +and watchdog. + +The TWD is usually attached to a GIC to deliver its two per-processor +interrupts. + +** Timer node required properties: + +- compatible : Should be one of: + "arm,cortex-a9-twd-timer" + "arm,cortex-a5-twd-timer" + "arm,arm11mp-twd-timer" + +- interrupts : One interrupt to each core + +- reg : Specify the base address and the size of the TWD timer + register window. + +Example: + + twd-timer@2c000600 { + compatible = "arm,arm11mp-twd-timer""; + reg = <0x2c000600 0x20>; + interrupts = <1 13 0xf01>; + }; + +** Watchdog node properties: + +- compatible : Should be one of: + "arm,cortex-a9-twd-wdt" + "arm,cortex-a5-twd-wdt" + "arm,arm11mp-twd-wdt" + +- interrupts : One interrupt to each core + +- reg : Specify the base address and the size of the TWD watchdog + register window. + +Example: + + twd-watchdog@2c000620 { + compatible = "arm,arm11mp-twd-wdt"; + reg = <0x2c000620 0x20>; + interrupts = <1 14 0xf01>; + }; diff --git a/arch/arm/boot/dts/highbank.dts b/arch/arm/boot/dts/highbank.dts index 305635bd45c..37c0ff9c8b9 100644 --- a/arch/arm/boot/dts/highbank.dts +++ b/arch/arm/boot/dts/highbank.dts @@ -72,15 +72,15 @@ ranges; timer@fff10600 { - compatible = "arm,smp-twd"; + compatible = "arm,cortex-a9-twd-timer"; reg = <0xfff10600 0x20>; - interrupts = <1 13 0xf04>; + interrupts = <1 13 0xf01>; }; watchdog@fff10620 { - compatible = "arm,cortex-a9-wdt"; + compatible = "arm,cortex-a9-twd-wdt"; reg = <0xfff10620 0x20>; - interrupts = <1 14 0xf04>; + interrupts = <1 14 0xf01>; }; intc: interrupt-controller@fff11000 { diff --git a/arch/arm/boot/dts/imx6q.dtsi b/arch/arm/boot/dts/imx6q.dtsi index 263e8f3664b..4905f51a106 100644 --- a/arch/arm/boot/dts/imx6q.dtsi +++ b/arch/arm/boot/dts/imx6q.dtsi @@ -88,9 +88,9 @@ ranges; timer@00a00600 { - compatible = "arm,smp-twd"; - reg = <0x00a00600 0x100>; - interrupts = <1 13 0xf4>; + compatible = "arm,cortex-a9-twd-timer"; + reg = <0x00a00600 0x20>; + interrupts = <1 13 0xf01>; }; L2: l2-cache@00a02000 { diff --git a/arch/arm/include/asm/hardware/arm_timer.h b/arch/arm/include/asm/hardware/arm_timer.h index c0f4e7bf22d..d6030ff599d 100644 --- a/arch/arm/include/asm/hardware/arm_timer.h +++ b/arch/arm/include/asm/hardware/arm_timer.h @@ -9,7 +9,12 @@ * * Integrator AP has 16-bit timers, Integrator CP, Versatile and Realview * can have 16-bit or 32-bit selectable via a bit in the control register. + * + * Every SP804 contains two identical timers. */ +#define TIMER_1_BASE 0x00 +#define TIMER_2_BASE 0x20 + #define TIMER_LOAD 0x00 /* ACVR rw */ #define TIMER_VALUE 0x04 /* ACVR ro */ #define TIMER_CTRL 0x08 /* ACVR rw */ diff --git a/arch/arm/include/asm/localtimer.h b/arch/arm/include/asm/localtimer.h index c6a18424888..f77ffc1eb0c 100644 --- a/arch/arm/include/asm/localtimer.h +++ b/arch/arm/include/asm/localtimer.h @@ -11,47 +11,24 @@ #define __ASM_ARM_LOCALTIMER_H #include <linux/errno.h> -#include <linux/interrupt.h> struct clock_event_device; -/* - * Setup a per-cpu timer, whether it be a local timer or dummy broadcast - */ -void percpu_timer_setup(void); +struct local_timer_ops { + int (*setup)(struct clock_event_device *); + void (*stop)(struct clock_event_device *); +}; #ifdef CONFIG_LOCAL_TIMERS - -#ifdef CONFIG_HAVE_ARM_TWD - -#include "smp_twd.h" - -#define local_timer_stop(c) twd_timer_stop((c)) - -#else - -/* - * Stop the local timer - */ -void local_timer_stop(struct clock_event_device *); - -#endif - /* - * Setup a local timer interrupt for a CPU. + * Register a local timer driver */ -int local_timer_setup(struct clock_event_device *); - +int local_timer_register(struct local_timer_ops *); #else - -static inline int local_timer_setup(struct clock_event_device *evt) +static inline int local_timer_register(struct local_timer_ops *ops) { return -ENXIO; } - -static inline void local_timer_stop(struct clock_event_device *evt) -{ -} #endif #endif diff --git a/arch/arm/include/asm/smp_twd.h b/arch/arm/include/asm/smp_twd.h index ef9ffba97ad..0f01f4677bd 100644 --- a/arch/arm/include/asm/smp_twd.h +++ b/arch/arm/include/asm/smp_twd.h @@ -18,11 +18,28 @@ #define TWD_TIMER_CONTROL_PERIODIC (1 << 1) #define TWD_TIMER_CONTROL_IT_ENABLE (1 << 2) -struct clock_event_device; +#include <linux/ioport.h> -extern void __iomem *twd_base; +struct twd_local_timer { + struct resource res[2]; +}; -void twd_timer_setup(struct clock_event_device *); -void twd_timer_stop(struct clock_event_device *); +#define DEFINE_TWD_LOCAL_TIMER(name,base,irq) \ +struct twd_local_timer name __initdata = { \ + .res = { \ + DEFINE_RES_MEM(base, 0x10), \ + DEFINE_RES_IRQ(irq), \ + }, \ +}; + +int twd_local_timer_register(struct twd_local_timer *); + +#ifdef CONFIG_HAVE_ARM_TWD +void twd_local_timer_of_register(void); +#else +static inline void twd_local_timer_of_register(void) +{ +} +#endif #endif diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index cdeb727527d..1ad84a6c9bf 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -246,6 +246,8 @@ static void __cpuinit smp_store_cpu_info(unsigned int cpuid) store_cpu_topology(cpuid); } +static void percpu_timer_setup(void); + /* * This is the secondary CPU boot entry. We're using this CPUs * idle thread stack, but a set of temporary page tables. @@ -459,7 +461,20 @@ static void __cpuinit broadcast_timer_setup(struct clock_event_device *evt) clockevents_register_device(evt); } -void __cpuinit percpu_timer_setup(void) +static struct local_timer_ops *lt_ops; + +#ifdef CONFIG_LOCAL_TIMERS +int local_timer_register(struct local_timer_ops *ops) +{ + if (lt_ops) + return -EBUSY; + + lt_ops = ops; + return 0; +} +#endif + +static void __cpuinit percpu_timer_setup(void) { unsigned int cpu = smp_processor_id(); struct clock_event_device *evt = &per_cpu(percpu_clockevent, cpu); @@ -467,7 +482,7 @@ void __cpuinit percpu_timer_setup(void) evt->cpumask = cpumask_of(cpu); evt->broadcast = smp_timer_broadcast; - if (local_timer_setup(evt)) + if (!lt_ops || lt_ops->setup(evt)) broadcast_timer_setup(evt); } @@ -482,7 +497,8 @@ static void percpu_timer_stop(void) unsigned int cpu = smp_processor_id(); struct clock_event_device *evt = &per_cpu(percpu_clockevent, cpu); - local_timer_stop(evt); + if (lt_ops) + lt_ops->stop(evt); } #endif diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c index 7a79b24597b..fef42b21cec 100644 --- a/arch/arm/kernel/smp_twd.c +++ b/arch/arm/kernel/smp_twd.c @@ -18,20 +18,23 @@ #include <linux/smp.h> #include <linux/jiffies.h> #include <linux/clockchips.h> -#include <linux/irq.h> +#include <linux/interrupt.h> #include <linux/io.h> +#include <linux/of_irq.h> +#include <linux/of_address.h> #include <asm/smp_twd.h> #include <asm/localtimer.h> #include <asm/hardware/gic.h> /* set up by the platform code */ -void __iomem *twd_base; +static void __iomem *twd_base; static struct clk *twd_clk; static unsigned long twd_timer_rate; static struct clock_event_device __percpu **twd_evt; +static int twd_ppi; static void twd_set_mode(enum clock_event_mode mode, struct clock_event_device *clk) @@ -77,7 +80,7 @@ static int twd_set_next_event(unsigned long evt, * If a local timer interrupt has occurred, acknowledge and return 1. * Otherwise, return 0. */ -int twd_timer_ack(void) +static int twd_timer_ack(void) { if (__raw_readl(twd_base + TWD_TIMER_INTSTAT)) { __raw_writel(1, twd_base + TWD_TIMER_INTSTAT); @@ -87,7 +90,7 @@ int twd_timer_ack(void) return 0; } -void twd_timer_stop(struct clock_event_device *clk) +static void twd_timer_stop(struct clock_event_device *clk) { twd_set_mode(CLOCK_EVT_MODE_UNUSED, clk); disable_percpu_irq(clk->irq); @@ -222,28 +225,10 @@ static struct clk *twd_get_clock(void) /* * Setup the local clock events for a CPU. */ -void __cpuinit twd_timer_setup(struct clock_event_device *clk) +static int __cpuinit twd_timer_setup(struct clock_event_device *clk) { struct clock_event_device **this_cpu_clk; - if (!twd_evt) { - int err; - - twd_evt = alloc_percpu(struct clock_event_device *); - if (!twd_evt) { - pr_err("twd: can't allocate memory\n"); - return; - } - - err = request_percpu_irq(clk->irq, twd_handler, - "twd", twd_evt); - if (err) { - pr_err("twd: can't register interrupt %d (%d)\n", - clk->irq, err); - return; - } - } - if (!twd_clk) twd_clk = twd_get_clock(); @@ -260,6 +245,7 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk) clk->rating = 350; clk->set_mode = twd_set_mode; clk->set_next_event = twd_set_next_event; + clk->irq = twd_ppi; this_cpu_clk = __this_cpu_ptr(twd_evt); *this_cpu_clk = clk; @@ -267,4 +253,95 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk) clockevents_config_and_register(clk, twd_timer_rate, 0xf, 0xffffffff); enable_percpu_irq(clk->irq, 0); + + return 0; +} + +static struct local_timer_ops twd_lt_ops __cpuinitdata = { + .setup = twd_timer_setup, + .stop = twd_timer_stop, +}; + +static int __init twd_local_timer_common_register(void) +{ + int err; + + twd_evt = alloc_percpu(struct clock_event_device *); + if (!twd_evt) { + err = -ENOMEM; + goto out_free; + } + + err = request_percpu_irq(twd_ppi, twd_handler, "twd", twd_evt); + if (err) { + pr_err("twd: can't register interrupt %d (%d)\n", twd_ppi, err); + goto out_free; + } + + err = local_timer_register(&twd_lt_ops); + if (err) + goto out_irq; + + return 0; + +out_irq: + free_percpu_irq(twd_ppi, twd_evt); +out_free: + iounmap(twd_base); + twd_base = NULL; + free_percpu(twd_evt); + + return err; } + +int __init twd_local_timer_register(struct twd_local_timer *tlt) +{ + if (twd_base || twd_evt) + return -EBUSY; + + twd_ppi = tlt->res[1].start; + + twd_base = ioremap(tlt->res[0].start, resource_size(&tlt->res[0])); + if (!twd_base) + return -ENOMEM; + + return twd_local_timer_common_register(); +} + +#ifdef CONFIG_OF +const static struct of_device_id twd_of_match[] __initconst = { + { .compatible = "arm,cortex-a9-twd-timer", }, + { .compatible = "arm,cortex-a5-twd-timer", }, + { .compatible = "arm,arm11mp-twd-timer", }, + { }, +}; + +void __init twd_local_timer_of_register(void) +{ + struct device_node *np; + int err; + + np = of_find_matching_node(NULL, twd_of_match); + if (!np) { + err = -ENODEV; + goto out; + } + + twd_ppi = irq_of_parse_and_map(np, 0); + if (!twd_ppi) { + err = -EINVAL; + goto out; + } + + twd_base = of_iomap(np, 0); + if (!twd_base) { + err = -ENOMEM; + goto out; + } + + err = twd_local_timer_common_register(); + +out: + WARN(err, "twd_local_timer_of_register failed (%d)\n", err); +} +#endif diff --git a/arch/arm/mach-exynos/mct.c b/arch/arm/mach-exynos/mct.c index 85b5527d091..edc4b9488f2 100644 --- a/arch/arm/mach-exynos/mct.c +++ b/arch/arm/mach-exynos/mct.c @@ -21,6 +21,7 @@ #include <linux/percpu.h> #include <asm/hardware/gic.h> +#include <asm/localtimer.h> #include <plat/cpu.h> @@ -375,7 +376,7 @@ static struct irqaction mct_tick1_event_irq = { .handler = exynos4_mct_tick_isr, }; -static void exynos4_mct_tick_init(struct clock_event_device *evt) +static int __cpuinit exynos4_local_timer_setup(struct clock_event_device *evt) { struct mct_clock_event_device *mevt; unsigned int cpu = smp_processor_id(); @@ -417,17 +418,11 @@ static void exynos4_mct_tick_init(struct clock_event_device *evt) } else { enable_percpu_irq(IRQ_MCT_LOCALTIMER, 0); } -} - -/* Setup the local clock events for a CPU */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - exynos4_mct_tick_init(evt); return 0; } -void local_timer_stop(struct clock_event_device *evt) +static void exynos4_local_timer_stop(struct clock_event_device *evt) { unsigned int cpu = smp_processor_id(); evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt); @@ -439,6 +434,11 @@ void local_timer_stop(struct clock_event_device *evt) else disable_percpu_irq(IRQ_MCT_LOCALTIMER); } + +static struct local_timer_ops exynos4_mct_tick_ops __cpuinitdata = { + .setup = exynos4_local_timer_setup, + .stop = exynos4_local_timer_stop, +}; #endif /* CONFIG_LOCAL_TIMERS */ static void __init exynos4_timer_resources(void) @@ -458,6 +458,8 @@ static void __init exynos4_timer_resources(void) WARN(err, "MCT: can't request IRQ %d (%d)\n", IRQ_MCT_LOCALTIMER, err); } + + local_timer_register(&exynos4_mct_tick_ops); #endif /* CONFIG_LOCAL_TIMERS */ } diff --git a/arch/arm/mach-highbank/Makefile b/arch/arm/mach-highbank/Makefile index 986958a5a72..f8437dd238c 100644 --- a/arch/arm/mach-highbank/Makefile +++ b/arch/arm/mach-highbank/Makefile @@ -1,6 +1,5 @@ obj-y := clock.o highbank.o system.o obj-$(CONFIG_DEBUG_HIGHBANK_UART) += lluart.o obj-$(CONFIG_SMP) += platsmp.o -obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o obj-$(CONFIG_PM_SLEEP) += pm.o diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c index 8394d512a40..bb1684f9b68 100644 --- a/arch/arm/mach-highbank/highbank.c +++ b/arch/arm/mach-highbank/highbank.c @@ -27,6 +27,7 @@ #include <asm/cacheflush.h> #include <asm/smp_plat.h> #include <asm/smp_scu.h> +#include <asm/smp_twd.h> #include <asm/hardware/arm_timer.h> #include <asm/hardware/timer-sp.h> #include <asm/hardware/gic.h> @@ -111,6 +112,8 @@ static void __init highbank_timer_init(void) sp804_clocksource_init(timer_base + 0x20, "timer1"); sp804_clockevents_init(timer_base, irq, "timer0"); + + twd_local_timer_of_register(); } static struct sys_timer highbank_timer = { diff --git a/arch/arm/mach-highbank/localtimer.c b/arch/arm/mach-highbank/localtimer.c deleted file mode 100644 index 5a00e7945fd..00000000000 --- a/arch/arm/mach-highbank/localtimer.c +++ /dev/null @@ -1,40 +0,0 @@ -/* - * Copyright 2010-2011 Calxeda, Inc. - * Based on localtimer.c, Copyright (C) 2002 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope 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 <http://www.gnu.org/licenses/>. - */ -#include <linux/init.h> -#include <linux/clockchips.h> -#include <linux/of.h> -#include <linux/of_address.h> -#include <linux/of_irq.h> - -#include <asm/smp_twd.h> - -/* - * Setup the local clock events for a CPU. - */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - struct device_node *np; - - np = of_find_compatible_node(NULL, NULL, "arm,smp-twd"); - if (!twd_base) { - twd_base = of_iomap(np, 0); - WARN_ON(!twd_base); - } - evt->irq = irq_of_parse_and_map(np, 0); - twd_timer_setup(evt); - return 0; -} diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile index 55db9c488f2..190d5700616 100644 --- a/arch/arm/mach-imx/Makefile +++ b/arch/arm/mach-imx/Makefile @@ -71,7 +71,6 @@ obj-$(CONFIG_CPU_V7) += head-v7.o AFLAGS_head-v7.o :=-Wa,-march=armv7-a obj-$(CONFIG_SMP) += platsmp.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o -obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o obj-$(CONFIG_SOC_IMX6Q) += clock-imx6q.o mach-imx6q.o ifeq ($(CONFIG_PM),y) diff --git a/arch/arm/mach-imx/localtimer.c b/arch/arm/mach-imx/localtimer.c deleted file mode 100644 index 3a163515d41..00000000000 --- a/arch/arm/mach-imx/localtimer.c +++ /dev/null @@ -1,35 +0,0 @@ -/* - * Copyright 2011 Freescale Semiconductor, Inc. - * Copyright 2011 Linaro Ltd. - * - * The code contained herein is licensed under the GNU General Public - * License. You may obtain a copy of the GNU General Public License - * Version 2 or later at the following locations: - * - * http://www.opensource.org/licenses/gpl-license.html - * http://www.gnu.org/copyleft/gpl.html - */ - -#include <linux/init.h> -#include <linux/clockchips.h> -#include <linux/of_address.h> -#include <linux/of_irq.h> -#include <asm/smp_twd.h> - -/* - * Setup the local clock events for a CPU. - */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - struct device_node *np; - - np = of_find_compatible_node(NULL, NULL, "arm,smp-twd"); - if (!twd_base) { - twd_base = of_iomap(np, 0); - WARN_ON(!twd_base); - } - evt->irq = irq_of_parse_and_map(np, 0); - twd_timer_setup(evt); - - return 0; -} diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index c2572810691..a2eea8671ee 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -21,6 +21,7 @@ #include <linux/of_platform.h> #include <linux/phy.h> #include <linux/micrel_phy.h> +#include <asm/smp_twd.h> #include <asm/hardware/cache-l2x0.h> #include <asm/hardware/gic.h> #include <asm/mach/arch.h> @@ -119,6 +120,7 @@ static void __init imx6q_init_irq(void) static void __init imx6q_timer_init(void) { mx6q_clocks_init(); + twd_local_timer_of_register(); } static struct sys_timer imx6q_timer = { diff --git a/arch/arm/mach-msm/timer.c b/arch/arm/mach-msm/timer.c index 11d0d8f2656..75f4be40b3e 100644 --- a/arch/arm/mach-msm/timer.c +++ b/arch/arm/mach-msm/timer.c @@ -127,6 +127,45 @@ static struct clocksource msm_clocksource = { .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; +#ifdef CONFIG_LOCAL_TIMERS +static int __cpuinit msm_local_timer_setup(struct clock_event_device *evt) +{ + /* Use existing clock_event for cpu 0 */ + if (!smp_processor_id()) + return 0; + + writel_relaxed(0, event_base + TIMER_ENABLE); + writel_relaxed(0, event_base + TIMER_CLEAR); + writel_relaxed(~0, event_base + TIMER_MATCH_VAL); + evt->irq = msm_clockevent.irq; + evt->name = "local_timer"; + evt->features = msm_clockevent.features; + evt->rating = msm_clockevent.rating; + evt->set_mode = msm_timer_set_mode; + evt->set_next_event = msm_timer_set_next_event; + evt->shift = msm_clockevent.shift; + evt->mult = div_sc(GPT_HZ, NSEC_PER_SEC, evt->shift); + evt->max_delta_ns = clockevent_delta2ns(0xf0000000, evt); + evt->min_delta_ns = clockevent_delta2ns(4, evt); + + *__this_cpu_ptr(msm_evt.percpu_evt) = evt; + clockevents_register_device(evt); + enable_percpu_irq(evt->irq, 0); + return 0; +} + +static void msm_local_timer_stop(struct clock_event_device *evt) +{ + evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt); + disable_percpu_irq(evt->irq); +} + +static struct local_timer_ops msm_local_timer_ops __cpuinitdata = { + .setup = msm_local_timer_setup, + .stop = msm_local_timer_stop, +}; +#endif /* CONFIG_LOCAL_TIMERS */ + static void __init msm_timer_init(void) { struct clock_event_device *ce = &msm_clockevent; @@ -173,8 +212,12 @@ static void __init msm_timer_init(void) *__this_cpu_ptr(msm_evt.percpu_evt) = ce; res = request_percpu_irq(ce->irq, msm_timer_interrupt, ce->name, msm_evt.percpu_evt); - if (!res) + if (!res) { enable_percpu_irq(ce->irq, 0); +#ifdef CONFIG_LOCAL_TIMERS + local_timer_register(&msm_local_timer_ops); +#endif + } } else { msm_evt.evt = ce; res = request_irq(ce->irq, msm_timer_interrupt, @@ -191,40 +234,6 @@ err: pr_err("clocksource_register failed\n"); } -#ifdef CONFIG_LOCAL_TIMERS -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - /* Use existing clock_event for cpu 0 */ - if (!smp_processor_id()) - return 0; - - writel_relaxed(0, event_base + TIMER_ENABLE); - writel_relaxed(0, event_base + TIMER_CLEAR); - writel_relaxed(~0, event_base + TIMER_MATCH_VAL); - evt->irq = msm_clockevent.irq; - evt->name = "local_timer"; - evt->features = msm_clockevent.features; - evt->rating = msm_clockevent.rating; - evt->set_mode = msm_timer_set_mode; - evt->set_next_event = msm_timer_set_next_event; - evt->shift = msm_clockevent.shift; - evt->mult = div_sc(GPT_HZ, NSEC_PER_SEC, evt->shift); - evt->max_delta_ns = clockevent_delta2ns(0xf0000000, evt); - evt->min_delta_ns = clockevent_delta2ns(4, evt); - - *__this_cpu_ptr(msm_evt.percpu_evt) = evt; - clockevents_register_device(evt); - enable_percpu_irq(evt->irq, 0); - return 0; -} - -void local_timer_stop(struct clock_event_device *evt) -{ - evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt); - disable_percpu_irq(evt->irq); -} -#endif /* CONFIG_LOCAL_TIMERS */ - struct sys_timer msm_timer = { .init = msm_timer_init }; diff --git a/arch/arm/mach-nomadik/board-nhk8815.c b/arch/arm/mach-nomadik/board-nhk8815.c index 7c878bf0034..b77cb8465d3 100644 --- a/arch/arm/mach-nomadik/board-nhk8815.c +++ b/arch/arm/mach-nomadik/board-nhk8815.c @@ -27,11 +27,11 @@ #include <asm/mach/arch.h> #include <asm/mach/irq.h> #include <asm/mach/flash.h> +#include <asm/mach/time.h> #include <plat/gpio-nomadik.h> #include <plat/mtu.h> -#include <mach/setup.h> #include <mach/nand.h> #include <mach/fsmc.h> @@ -255,10 +255,7 @@ static void __init nomadik_timer_init(void) src_cr |= SRC_CR_INIT_VAL; writel(src_cr, io_p2v(NOMADIK_SRC_BASE)); - /* Save global pointer to mtu, used by platform timer code */ - mtu_base = io_p2v(NOMADIK_MTU0_BASE); - - nmdk_timer_init(); + nmdk_timer_init(io_p2v(NOMADIK_MTU0_BASE)); } static struct sys_timer nomadik_timer = { diff --git a/arch/arm/mach-nomadik/include/mach/setup.h b/arch/arm/mach-nomadik/include/mach/setup.h deleted file mode 100644 index bcaeaf41c05..00000000000 --- a/arch/arm/mach-nomadik/include/mach/setup.h +++ /dev/null @@ -1,19 +0,0 @@ - -/* - * These symbols are needed for board-specific files to call their - * own cpu-specific files - */ - -#ifndef __ASM_ARCH_SETUP_H -#define __ASM_ARCH_SETUP_H - -#include <asm/mach/time.h> -#include <linux/init.h> - -#ifdef CONFIG_NOMADIK_8815 - -extern void nmdk_timer_init(void); - -#endif /* NOMADIK_8815 */ - -#endif /* __ASM_ARCH_SETUP_H */ diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index bd76394ccaf..05c2ffc1030 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -23,7 +23,6 @@ obj-$(CONFIG_TWL4030_CORE) += omap_twl.o # SMP support ONLY available for OMAP4 obj-$(CONFIG_SMP) += omap-smp.o omap-headsmp.o -obj-$(CONFIG_LOCAL_TIMERS) += timer-mpu.o obj-$(CONFIG_HOTPLUG_CPU) += omap-hotplug.o obj-$(CONFIG_ARCH_OMAP4) += omap4-common.o omap-wakeupgen.o \ sleep44xx.o diff --git a/arch/arm/mach-omap2/timer-mpu.c b/arch/arm/mach-omap2/timer-mpu.c deleted file mode 100644 index 31c0ac4cd66..00000000000 --- a/arch/arm/mach-omap2/timer-mpu.c +++ /dev/null @@ -1,39 +0,0 @@ -/* - * The MPU local timer source file. In OMAP4, both cortex-a9 cores have - * own timer in it's MPU domain. These timers will be driving the - * linux kernel SMP tick framework when active. These timers are not - * part of the wake up domain. - * - * Copyright (C) 2009 Texas Instruments, Inc. - * - * Author: - * Santosh Shilimkar <santosh.shilimkar@ti.com> - * - * This file is based on arm realview smp platform file. - * Copyright (C) 2002 ARM Ltd. - * - * 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/init.h> -#include <linux/smp.h> -#include <linux/clockchips.h> -#include <asm/irq.h> -#include <asm/smp_twd.h> -#include <asm/localtimer.h> - -/* - * Setup the local clock events for a CPU. - */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - /* Local timers are not supprted on OMAP4430 ES1.0 */ - if (omap_rev() == OMAP4430_REV_ES1_0) - return -ENXIO; - - evt->irq = OMAP44XX_IRQ_LOCALTIMER; - twd_timer_setup(evt); - return 0; -} - diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c index 5c9acea9576..c512bac69ec 100644 --- a/arch/arm/mach-omap2/timer.c +++ b/arch/arm/mach-omap2/timer.c @@ -39,7 +39,7 @@ #include <asm/mach/time.h> #include <plat/dmtimer.h> -#include <asm/localtimer.h> +#include <asm/smp_twd.h> #include <asm/sched_clock.h> #include "common.h" #include <plat/omap_hwmod.h> @@ -324,14 +324,26 @@ OMAP_SYS_TIMER(3_secure) #endif #ifdef CONFIG_ARCH_OMAP4 -static void __init omap4_timer_init(void) -{ #ifdef CONFIG_LOCAL_TIMERS - twd_base = ioremap(OMAP44XX_LOCAL_TWD_BASE, SZ_256); - BUG_ON(!twd_base); +static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, + OMAP44XX_LOCAL_TWD_BASE, + OMAP44XX_IRQ_LOCALTIMER); #endif + +static void __init omap4_timer_init(void) +{ omap2_gp_clockevent_init(1, OMAP4_CLKEV_SOURCE); omap2_gp_clocksource_init(2, OMAP4_MPU_SOURCE); +#ifdef CONFIG_LOCAL_TIMERS + /* Local timers are not supprted on OMAP4430 ES1.0 */ + if (omap_rev() != OMAP4430_REV_ES1_0) { + int err; + + err = twd_local_timer_register(&twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); + } +#endif } OMAP_SYS_TIMER(4) #endif diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c index 9578145f2df..a2e95903795 100644 --- a/arch/arm/mach-realview/realview_eb.c +++ b/arch/arm/mach-realview/realview_eb.c @@ -36,7 +36,7 @@ #include <asm/pgtable.h> #include <asm/hardware/gic.h> #include <asm/hardware/cache-l2x0.h> -#include <asm/localtimer.h> +#include <asm/smp_twd.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> @@ -383,6 +383,23 @@ static void realview_eb11mp_fixup(void) realview_eb_isp1761_resources[1].end = IRQ_EB11MP_USB; } +#ifdef CONFIG_HAVE_ARM_TWD +static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, + REALVIEW_EB11MP_TWD_BASE, + IRQ_LOCALTIMER); + +static void __init realview_eb_twd_init(void) +{ + if (core_tile_eb11mp() || core_tile_a9mp()) { + int err = twd_local_timer_register(&twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); + } +} +#else +#define realview_eb_twd_init() do { } while(0) +#endif + static void __init realview_eb_timer_init(void) { unsigned int timer_irq; @@ -392,15 +409,13 @@ static void __init realview_eb_timer_init(void) timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE); timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20; - if (core_tile_eb11mp() || core_tile_a9mp()) { -#ifdef CONFIG_LOCAL_TIMERS - twd_base = __io_address(REALVIEW_EB11MP_TWD_BASE); -#endif + if (core_tile_eb11mp() || core_tile_a9mp()) timer_irq = IRQ_EB11MP_TIMER0_1; - } else + else timer_irq = IRQ_EB_TIMER0_1; realview_timer_init(timer_irq); + realview_eb_twd_init(); } static struct sys_timer realview_eb_timer = { diff --git a/arch/arm/mach-realview/realview_pb11mp.c b/arch/arm/mach-realview/realview_pb11mp.c index 2147335f66f..3bea5bd0221 100644 --- a/arch/arm/mach-realview/realview_pb11mp.c +++ b/arch/arm/mach-realview/realview_pb11mp.c @@ -36,7 +36,7 @@ #include <asm/pgtable.h> #include <asm/hardware/gic.h> #include <asm/hardware/cache-l2x0.h> -#include <asm/localtimer.h> +#include <asm/smp_twd.h> #include <asm/mach/arch.h> #include <asm/mach/flash.h> @@ -290,6 +290,21 @@ static void __init gic_init_irq(void) gic_cascade_irq(1, IRQ_TC11MP_PB_IRQ1); } +#ifdef CONFIG_HAVE_ARM_TWD +static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, + REALVIEW_TC11MP_TWD_BASE, + IRQ_LOCALTIMER); + +static void __init realview_pb11mp_twd_init(void) +{ + int err = twd_local_timer_register(&twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); +} +#else +#define realview_pb11mp_twd_init() do {} while(0) +#endif + static void __init realview_pb11mp_timer_init(void) { timer0_va_base = __io_address(REALVIEW_PB11MP_TIMER0_1_BASE); @@ -297,10 +312,8 @@ static void __init realview_pb11mp_timer_init(void) timer2_va_base = __io_address(REALVIEW_PB11MP_TIMER2_3_BASE); timer3_va_base = __io_address(REALVIEW_PB11MP_TIMER2_3_BASE) + 0x20; -#ifdef CONFIG_LOCAL_TIMERS - twd_base = __io_address(REALVIEW_TC11MP_TWD_BASE); -#endif realview_timer_init(IRQ_TC11MP_TIMER0_1); + realview_pb11mp_twd_init(); } static struct sys_timer realview_pb11mp_timer = { diff --git a/arch/arm/mach-realview/realview_pbx.c b/arch/arm/mach-realview/realview_pbx.c index ac715645b86..6ddcc6147bf 100644 --- a/arch/arm/mach-realview/realview_pbx.c +++ b/arch/arm/mach-realview/realview_pbx.c @@ -298,6 +298,21 @@ static void __init gic_init_irq(void) } } +#ifdef CONFIG_HAVE_ARM_TWD +static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, + REALVIEW_PBX_TILE_TWD_BASE, + IRQ_LOCALTIMER); + +static void __init realview_pbx_twd_init(void) +{ + int err = twd_local_timer_register(&twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); +} +#else +#define realview_pbx_twd_init() do { } while(0) +#endif + static void __init realview_pbx_timer_init(void) { timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE); @@ -305,11 +320,8 @@ static void __init realview_pbx_timer_init(void) timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE); timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20; -#ifdef CONFIG_LOCAL_TIMERS - if (core_tile_pbx11mp() || core_tile_pbxa9mp()) - twd_base = __io_address(REALVIEW_PBX_TILE_TWD_BASE); -#endif realview_timer_init(IRQ_PBX_TIMER0_1); + realview_pbx_twd_init(); } static struct sys_timer realview_pbx_timer = { diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile index 7ad6954c46c..e7c2590b75d 100644 --- a/arch/arm/mach-shmobile/Makefile +++ b/arch/arm/mach-shmobile/Makefile @@ -16,7 +16,6 @@ obj-$(CONFIG_ARCH_R8A7779) += setup-r8a7779.o clock-r8a7779.o intc-r8a7779.o # SMP objects smp-y := platsmp.o headsmp.o smp-$(CONFIG_HOTPLUG_CPU) += hotplug.o -smp-$(CONFIG_LOCAL_TIMERS) += localtimer.o smp-$(CONFIG_ARCH_SH73A0) += smp-sh73a0.o smp-$(CONFIG_ARCH_R8A7779) += smp-r8a7779.o diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h index e41b61a4843..83ad3fe0a75 100644 --- a/arch/arm/mach-shmobile/include/mach/common.h +++ b/arch/arm/mach-shmobile/include/mach/common.h @@ -3,6 +3,8 @@ extern void shmobile_earlytimer_init(void); extern struct sys_timer shmobile_timer; +struct twd_local_timer; +void shmobile_twd_init(struct twd_local_timer *twd_local_timer); extern void shmobile_setup_console(void); extern void shmobile_secondary_vector(void); extern int shmobile_platform_cpu_kill(unsigned int cpu); diff --git a/arch/arm/mach-shmobile/localtimer.c b/arch/arm/mach-shmobile/localtimer.c deleted file mode 100644 index ad9ccc9900c..00000000000 --- a/arch/arm/mach-shmobile/localtimer.c +++ /dev/null @@ -1,26 +0,0 @@ -/* - * SMP support for R-Mobile / SH-Mobile - local timer portion - * - * Copyright (C) 2010 Magnus Damm - * - * Based on vexpress, Copyright (C) 2002 ARM Ltd, 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/init.h> -#include <linux/smp.h> -#include <linux/clockchips.h> -#include <asm/smp_twd.h> -#include <asm/localtimer.h> - -/* - * Setup the local clock events for a CPU. - */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - evt->irq = 29; - twd_timer_setup(evt); - return 0; -} diff --git a/arch/arm/mach-shmobile/platsmp.c b/arch/arm/mach-shmobile/platsmp.c index 993381257f6..45fa3924c6a 100644 --- a/arch/arm/mach-shmobile/platsmp.c +++ b/arch/arm/mach-shmobile/platsmp.c @@ -17,7 +17,6 @@ #include <linux/smp.h> #include <linux/io.h> #include <asm/hardware/gic.h> -#include <asm/localtimer.h> #include <asm/mach-types.h> #include <mach/common.h> diff --git a/arch/arm/mach-shmobile/smp-r8a7779.c b/arch/arm/mach-shmobile/smp-r8a7779.c index 4fe2e9eaf50..9bb7b8575a1 100644 --- a/arch/arm/mach-shmobile/smp-r8a7779.c +++ b/arch/arm/mach-shmobile/smp-r8a7779.c @@ -64,6 +64,8 @@ static void __iomem *scu_base_addr(void) static DEFINE_SPINLOCK(scu_lock); static unsigned long tmp; +static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29); + static void modify_scu_cpu_psr(unsigned long set, unsigned long clr) { void __iomem *scu_base = scu_base_addr(); @@ -82,11 +84,7 @@ unsigned int __init r8a7779_get_core_count(void) { void __iomem *scu_base = scu_base_addr(); -#ifdef CONFIG_HAVE_ARM_TWD - /* twd_base needs to be initialized before percpu_timer_setup() */ - twd_base = (void __iomem *)0xf0000600; -#endif - + shmobile_twd_init(&twd_local_timer); return scu_get_core_count(scu_base); } diff --git a/arch/arm/mach-shmobile/smp-sh73a0.c b/arch/arm/mach-shmobile/smp-sh73a0.c index 2d0d4212be4..c0a9093ba3a 100644 --- a/arch/arm/mach-shmobile/smp-sh73a0.c +++ b/arch/arm/mach-shmobile/smp-sh73a0.c @@ -42,6 +42,8 @@ static void __iomem *scu_base_addr(void) static DEFINE_SPINLOCK(scu_lock); static unsigned long tmp; +static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29); + static void modify_scu_cpu_psr(unsigned long set, unsigned long clr) { void __iomem *scu_base = scu_base_addr(); @@ -60,11 +62,7 @@ unsigned int __init sh73a0_get_core_count(void) { void __iomem *scu_base = scu_base_addr(); -#ifdef CONFIG_HAVE_ARM_TWD - /* twd_base needs to be initialized before percpu_timer_setup() */ - twd_base = (void __iomem *)0xf0000600; -#endif - + shmobile_twd_init(&twd_local_timer); return scu_get_core_count(scu_base); } diff --git a/arch/arm/mach-shmobile/timer.c b/arch/arm/mach-shmobile/timer.c index be1ad70fe40..2fba5f3d1c8 100644 --- a/arch/arm/mach-shmobile/timer.c +++ b/arch/arm/mach-shmobile/timer.c @@ -20,6 +20,7 @@ */ #include <linux/platform_device.h> #include <asm/mach/time.h> +#include <asm/smp_twd.h> static void __init shmobile_late_time_init(void) { @@ -45,6 +46,15 @@ static void __init shmobile_timer_init(void) { } +void __init shmobile_twd_init(struct twd_local_timer *twd_local_timer) +{ +#ifdef CONFIG_HAVE_ARM_TWD + int err = twd_local_timer_register(twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); +#endif +} + struct sys_timer shmobile_timer = { .init = shmobile_timer_init, }; diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile index e120ff54f66..f7d044369ed 100644 --- a/arch/arm/mach-tegra/Makefile +++ b/arch/arm/mach-tegra/Makefile @@ -13,7 +13,7 @@ obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra2_emc.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += pinmux-tegra20-tables.o obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += pinmux-tegra30-tables.o obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += board-dt-tegra30.o -obj-$(CONFIG_SMP) += platsmp.o localtimer.o headsmp.o +obj-$(CONFIG_SMP) += platsmp.o headsmp.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o obj-$(CONFIG_TEGRA_SYSTEM_DMA) += dma.o obj-$(CONFIG_CPU_FREQ) += cpu-tegra.o diff --git a/arch/arm/mach-tegra/localtimer.c b/arch/arm/mach-tegra/localtimer.c deleted file mode 100644 index e91d681d45a..00000000000 --- a/arch/arm/mach-tegra/localtimer.c +++ /dev/null @@ -1,26 +0,0 @@ -/* - * arch/arm/mach-tegra/localtimer.c - * - * Copyright (C) 2002 ARM Ltd. - * 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/init.h> -#include <linux/smp.h> -#include <linux/clockchips.h> -#include <asm/irq.h> -#include <asm/smp_twd.h> -#include <asm/localtimer.h> - -/* - * Setup the local clock events for a CPU. - */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - evt->irq = IRQ_LOCALTIMER; - twd_timer_setup(evt); - return 0; -} diff --git a/arch/arm/mach-tegra/timer.c b/arch/arm/mach-tegra/timer.c index 1d1acda4f3e..1eed8d4a80e 100644 --- a/arch/arm/mach-tegra/timer.c +++ b/arch/arm/mach-tegra/timer.c @@ -28,7 +28,7 @@ #include <linux/io.h> #include <asm/mach/time.h> -#include <asm/localtimer.h> +#include <asm/smp_twd.h> #include <asm/sched_clock.h> #include <mach/iomap.h> @@ -162,6 +162,21 @@ static struct irqaction tegra_timer_irq = { .irq = INT_TMR3, }; +#ifdef CONFIG_HAVE_ARM_TWD +static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, + TEGRA_ARM_PERIF_BASE + 0x600, + IRQ_LOCALTIMER); + +static void __init tegra_twd_init(void) +{ + int err = twd_local_timer_register(&twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); +} +#else +#define tegra_twd_init() do {} while(0) +#endif + static void __init tegra_init_timer(void) { struct clk *clk; @@ -188,10 +203,6 @@ static void __init tegra_init_timer(void) else clk_enable(clk); -#ifdef CONFIG_HAVE_ARM_TWD - twd_base = IO_ADDRESS(TEGRA_ARM_PERIF_BASE + 0x600); -#endif - switch (rate) { case 12000000: timer_writel(0x000b, TIMERUS_USEC_CFG); @@ -231,6 +242,7 @@ static void __init tegra_init_timer(void) tegra_clockevent.cpumask = cpu_all_mask; tegra_clockevent.irq = tegra_timer_irq.irq; clockevents_register_device(&tegra_clockevent); + tegra_twd_init(); } struct sys_timer tegra_timer = { diff --git a/arch/arm/mach-ux500/Makefile b/arch/arm/mach-ux500/Makefile index 6bd2f451c18..35b389442af 100644 --- a/arch/arm/mach-ux500/Makefile +++ b/arch/arm/mach-ux500/Makefile @@ -15,7 +15,6 @@ obj-$(CONFIG_MACH_U8500) += board-mop500.o board-mop500-sdi.o \ obj-$(CONFIG_MACH_U5500) += board-u5500.o board-u5500-sdi.o obj-$(CONFIG_SMP) += platsmp.o headsmp.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o -obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o obj-$(CONFIG_U5500_MODEM_IRQ) += modem-irq-db5500.o obj-$(CONFIG_U5500_MBOX) += mbox-db5500.o diff --git a/arch/arm/mach-ux500/cpu.c b/arch/arm/mach-ux500/cpu.c index f4185749437..851308bf642 100644 --- a/arch/arm/mach-ux500/cpu.c +++ b/arch/arm/mach-ux500/cpu.c @@ -14,7 +14,6 @@ #include <asm/hardware/gic.h> #include <asm/mach/map.h> -#include <asm/localtimer.h> #include <mach/hardware.h> #include <mach/setup.h> diff --git a/arch/arm/mach-ux500/include/mach/setup.h b/arch/arm/mach-ux500/include/mach/setup.h index a7d363fdb4c..93d403955ea 100644 --- a/arch/arm/mach-ux500/include/mach/setup.h +++ b/arch/arm/mach-ux500/include/mach/setup.h @@ -27,9 +27,6 @@ extern void __init u5500_sdi_init(void); extern void __init db5500_dma_init(void); -/* We re-use nomadik_timer for this platform */ -extern void nmdk_timer_init(void); - struct amba_device; extern void __init amba_add_devices(struct amba_device *devs[], int num); diff --git a/arch/arm/mach-ux500/localtimer.c b/arch/arm/mach-ux500/localtimer.c deleted file mode 100644 index 5ba113309a0..00000000000 --- a/arch/arm/mach-ux500/localtimer.c +++ /dev/null @@ -1,29 +0,0 @@ -/* - * Copyright (C) 2008-2009 ST-Ericsson - * Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> - * - * This file is heavily based on relaview platform, almost a copy. - * - * Copyright (C) 2002 ARM Ltd. - * - * 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/init.h> -#include <linux/smp.h> -#include <linux/clockchips.h> - -#include <asm/irq.h> -#include <asm/smp_twd.h> -#include <asm/localtimer.h> - -/* - * Setup the local clock events for a CPU. - */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - evt->irq = IRQ_LOCALTIMER; - twd_timer_setup(evt); - return 0; -} diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c index aea467d04ff..e9d580702fb 100644 --- a/arch/arm/mach-ux500/timer.c +++ b/arch/arm/mach-ux500/timer.c @@ -8,28 +8,46 @@ #include <linux/errno.h> #include <linux/clksrc-dbx500-prcmu.h> -#include <asm/localtimer.h> +#include <asm/smp_twd.h> #include <plat/mtu.h> #include <mach/setup.h> #include <mach/hardware.h> +#include <mach/irqs.h> + +#ifdef CONFIG_HAVE_ARM_TWD +static DEFINE_TWD_LOCAL_TIMER(u5500_twd_local_timer, + U5500_TWD_BASE, IRQ_LOCALTIMER); +static DEFINE_TWD_LOCAL_TIMER(u8500_twd_local_timer, + U8500_TWD_BASE, IRQ_LOCALTIMER); + +static void __init ux500_twd_init(void) +{ + struct twd_local_timer *twd_local_timer; + int err; + + twd_local_timer = cpu_is_u5500() ? &u5500_twd_local_timer : + &u8500_twd_local_timer; + + err = twd_local_timer_register(twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); +} +#else +#define ux500_twd_init() do { } while(0) +#endif static void __init ux500_timer_init(void) { + void __iomem *mtu_timer_base; void __iomem *prcmu_timer_base; if (cpu_is_u5500()) { -#ifdef CONFIG_LOCAL_TIMERS - twd_base = __io_address(U5500_TWD_BASE); -#endif - mtu_base = __io_address(U5500_MTU0_BASE); + mtu_timer_base = __io_address(U5500_MTU0_BASE); prcmu_timer_base = __io_address(U5500_PRCMU_TIMER_3_BASE); } else if (cpu_is_u8500()) { -#ifdef CONFIG_LOCAL_TIMERS - twd_base = __io_address(U8500_TWD_BASE); -#endif - mtu_base = __io_address(U8500_MTU0_BASE); + mtu_timer_base = __io_address(U8500_MTU0_BASE); prcmu_timer_base = __io_address(U8500_PRCMU_TIMER_4_BASE); } else { ux500_unknown_soc(); @@ -52,8 +70,9 @@ static void __init ux500_timer_init(void) * */ - nmdk_timer_init(); + nmdk_timer_init(mtu_timer_base); clksrc_dbx500_prcmu_init(prcmu_timer_base); + ux500_twd_init(); } static void ux500_timer_reset(void) diff --git a/arch/arm/mach-vexpress/core.h b/arch/arm/mach-vexpress/core.h index f4397159c17..3508f6ef78e 100644 --- a/arch/arm/mach-vexpress/core.h +++ b/arch/arm/mach-vexpress/core.h @@ -1,6 +1,3 @@ -#define __MMIO_P2V(x) (((x) & 0xfffff) | (((x) & 0x0f000000) >> 4) | 0xf8000000) -#define MMIO_P2V(x) ((void __iomem *)__MMIO_P2V(x)) - #define AMBA_DEVICE(name,busid,base,plat) \ struct amba_device name##_device = { \ .dev = { \ @@ -17,3 +14,9 @@ struct amba_device name##_device = { \ .irq = IRQ_##base, \ /* .dma = DMA_##base,*/ \ } + +/* 2MB large area for motherboard's peripherals static mapping */ +#define V2M_PERIPH 0xf8000000 + +/* Tile's peripherals static mappings should start here */ +#define V2T_PERIPH 0xf8200000 diff --git a/arch/arm/mach-vexpress/ct-ca9x4.c b/arch/arm/mach-vexpress/ct-ca9x4.c index b1e87c184e5..e5abe85fefa 100644 --- a/arch/arm/mach-vexpress/ct-ca9x4.c +++ b/arch/arm/mach-vexpress/ct-ca9x4.c @@ -30,57 +30,40 @@ #include <plat/clcd.h> -#define V2M_PA_CS7 0x10000000 - static struct map_desc ct_ca9x4_io_desc[] __initdata = { { - .virtual = __MMIO_P2V(CT_CA9X4_MPIC), - .pfn = __phys_to_pfn(CT_CA9X4_MPIC), - .length = SZ_16K, - .type = MT_DEVICE, - }, { - .virtual = __MMIO_P2V(CT_CA9X4_SP804_TIMER), - .pfn = __phys_to_pfn(CT_CA9X4_SP804_TIMER), - .length = SZ_4K, - .type = MT_DEVICE, - }, { - .virtual = __MMIO_P2V(CT_CA9X4_L2CC), - .pfn = __phys_to_pfn(CT_CA9X4_L2CC), - .length = SZ_4K, - .type = MT_DEVICE, + .virtual = V2T_PERIPH, + .pfn = __phys_to_pfn(CT_CA9X4_MPIC), + .length = SZ_8K, + .type = MT_DEVICE, }, }; static void __init ct_ca9x4_map_io(void) { -#ifdef CONFIG_LOCAL_TIMERS - twd_base = MMIO_P2V(A9_MPCORE_TWD); -#endif iotable_init(ct_ca9x4_io_desc, ARRAY_SIZE(ct_ca9x4_io_desc)); } -static void __init ct_ca9x4_init_irq(void) +#ifdef CONFIG_HAVE_ARM_TWD +static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, A9_MPCORE_TWD, IRQ_LOCALTIMER); + +static void __init ca9x4_twd_init(void) { - gic_init(0, 29, MMIO_P2V(A9_MPCORE_GIC_DIST), - MMIO_P2V(A9_MPCORE_GIC_CPU)); + int err = twd_local_timer_register(&twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); } +#else +#define ca9x4_twd_init() do {} while(0) +#endif -#if 0 -static void __init ct_ca9x4_timer_init(void) +static void __init ct_ca9x4_init_irq(void) { - writel(0, MMIO_P2V(CT_CA9X4_TIMER0) + TIMER_CTRL); - writel(0, MMIO_P2V(CT_CA9X4_TIMER1) + TIMER_CTRL); - - sp804_clocksource_init(MMIO_P2V(CT_CA9X4_TIMER1), "ct-timer1"); - sp804_clockevents_init(MMIO_P2V(CT_CA9X4_TIMER0), IRQ_CT_CA9X4_TIMER0, - "ct-timer0"); + gic_init(0, 29, ioremap(A9_MPCORE_GIC_DIST, SZ_4K), + ioremap(A9_MPCORE_GIC_CPU, SZ_256)); + ca9x4_twd_init(); } -static struct sys_timer ct_ca9x4_timer = { - .init = ct_ca9x4_timer_init, -}; -#endif - static void ct_ca9x4_clcd_enable(struct clcd_fb *fb) { v2m_cfg_write(SYS_CFG_MUXFPGA | SYS_CFG_SITE_DB1, 0); @@ -201,7 +184,7 @@ static void __init ct_ca9x4_init(void) int i; #ifdef CONFIG_CACHE_L2X0 - void __iomem *l2x0_base = MMIO_P2V(CT_CA9X4_L2CC); + void __iomem *l2x0_base = ioremap(CT_CA9X4_L2CC, SZ_4K); /* set RAM latencies to 1 cycle for this core tile. */ writel(0, l2x0_base + L2X0_TAG_LATENCY_CTRL); @@ -217,9 +200,17 @@ static void __init ct_ca9x4_init(void) } #ifdef CONFIG_SMP +static void *ct_ca9x4_scu_base __initdata; + static void __init ct_ca9x4_init_cpu_map(void) { - int i, ncores = scu_get_core_count(MMIO_P2V(A9_MPCORE_SCU)); + int i, ncores; + + ct_ca9x4_scu_base = ioremap(A9_MPCORE_SCU, SZ_128); + if (WARN_ON(!ct_ca9x4_scu_base)) + return; + + ncores = scu_get_core_count(ct_ca9x4_scu_base); if (ncores > nr_cpu_ids) { pr_warn("SMP: %u cores greater than maximum (%u), clipping\n", @@ -235,7 +226,7 @@ static void __init ct_ca9x4_init_cpu_map(void) static void __init ct_ca9x4_smp_enable(unsigned int max_cpus) { - scu_enable(MMIO_P2V(A9_MPCORE_SCU)); + scu_enable(ct_ca9x4_scu_base); } #endif diff --git a/arch/arm/mach-vexpress/include/mach/ct-ca9x4.h b/arch/arm/mach-vexpress/include/mach/ct-ca9x4.h index a34d3d4faae..2260fde8661 100644 --- a/arch/arm/mach-vexpress/include/mach/ct-ca9x4.h +++ b/arch/arm/mach-vexpress/include/mach/ct-ca9x4.h @@ -22,9 +22,6 @@ #define CT_CA9X4_SYSWDT (0x1e007000) #define CT_CA9X4_L2CC (0x1e00a000) -#define CT_CA9X4_TIMER0 (CT_CA9X4_SP804_TIMER + 0x000) -#define CT_CA9X4_TIMER1 (CT_CA9X4_SP804_TIMER + 0x020) - #define A9_MPCORE_SCU (CT_CA9X4_MPIC + 0x0000) #define A9_MPCORE_GIC_CPU (CT_CA9X4_MPIC + 0x0100) #define A9_MPCORE_GIT (CT_CA9X4_MPIC + 0x0200) diff --git a/arch/arm/mach-vexpress/include/mach/motherboard.h b/arch/arm/mach-vexpress/include/mach/motherboard.h index 0a3a3751840..b4c498c1dbe 100644 --- a/arch/arm/mach-vexpress/include/mach/motherboard.h +++ b/arch/arm/mach-vexpress/include/mach/motherboard.h @@ -39,33 +39,30 @@ #define V2M_CF (V2M_PA_CS7 + 0x0001a000) #define V2M_CLCD (V2M_PA_CS7 + 0x0001f000) -#define V2M_SYS_ID (V2M_SYSREGS + 0x000) -#define V2M_SYS_SW (V2M_SYSREGS + 0x004) -#define V2M_SYS_LED (V2M_SYSREGS + 0x008) -#define V2M_SYS_100HZ (V2M_SYSREGS + 0x024) -#define V2M_SYS_FLAGS (V2M_SYSREGS + 0x030) -#define V2M_SYS_FLAGSSET (V2M_SYSREGS + 0x030) -#define V2M_SYS_FLAGSCLR (V2M_SYSREGS + 0x034) -#define V2M_SYS_NVFLAGS (V2M_SYSREGS + 0x038) -#define V2M_SYS_NVFLAGSSET (V2M_SYSREGS + 0x038) -#define V2M_SYS_NVFLAGSCLR (V2M_SYSREGS + 0x03c) -#define V2M_SYS_MCI (V2M_SYSREGS + 0x048) -#define V2M_SYS_FLASH (V2M_SYSREGS + 0x03c) -#define V2M_SYS_CFGSW (V2M_SYSREGS + 0x058) -#define V2M_SYS_24MHZ (V2M_SYSREGS + 0x05c) -#define V2M_SYS_MISC (V2M_SYSREGS + 0x060) -#define V2M_SYS_DMA (V2M_SYSREGS + 0x064) -#define V2M_SYS_PROCID0 (V2M_SYSREGS + 0x084) -#define V2M_SYS_PROCID1 (V2M_SYSREGS + 0x088) -#define V2M_SYS_CFGDATA (V2M_SYSREGS + 0x0a0) -#define V2M_SYS_CFGCTRL (V2M_SYSREGS + 0x0a4) -#define V2M_SYS_CFGSTAT (V2M_SYSREGS + 0x0a8) - -#define V2M_TIMER0 (V2M_TIMER01 + 0x000) -#define V2M_TIMER1 (V2M_TIMER01 + 0x020) - -#define V2M_TIMER2 (V2M_TIMER23 + 0x000) -#define V2M_TIMER3 (V2M_TIMER23 + 0x020) +/* + * Offsets from SYSREGS base + */ +#define V2M_SYS_ID 0x000 +#define V2M_SYS_SW 0x004 +#define V2M_SYS_LED 0x008 +#define V2M_SYS_100HZ 0x024 +#define V2M_SYS_FLAGS 0x030 +#define V2M_SYS_FLAGSSET 0x030 +#define V2M_SYS_FLAGSCLR 0x034 +#define V2M_SYS_NVFLAGS 0x038 +#define V2M_SYS_NVFLAGSSET 0x038 +#define V2M_SYS_NVFLAGSCLR 0x03c +#define V2M_SYS_MCI 0x048 +#define V2M_SYS_FLASH 0x03c +#define V2M_SYS_CFGSW 0x058 +#define V2M_SYS_24MHZ 0x05c +#define V2M_SYS_MISC 0x060 +#define V2M_SYS_DMA 0x064 +#define V2M_SYS_PROCID0 0x084 +#define V2M_SYS_PROCID1 0x088 +#define V2M_SYS_CFGDATA 0x0a0 +#define V2M_SYS_CFGCTRL 0x0a4 +#define V2M_SYS_CFGSTAT 0x0a8 /* @@ -117,6 +114,7 @@ int v2m_cfg_write(u32 devfn, u32 data); int v2m_cfg_read(u32 devfn, u32 *data); +void v2m_flags_set(u32 data); /* * Core tile IDs diff --git a/arch/arm/mach-vexpress/platsmp.c b/arch/arm/mach-vexpress/platsmp.c index 124ffb16909..a1ed6d68597 100644 --- a/arch/arm/mach-vexpress/platsmp.c +++ b/arch/arm/mach-vexpress/platsmp.c @@ -14,7 +14,6 @@ #include <linux/io.h> #include <mach/motherboard.h> -#define V2M_PA_CS7 0x10000000 #include "core.h" @@ -43,7 +42,5 @@ void __init platform_smp_prepare_cpus(unsigned int max_cpus) * until it receives a soft interrupt, and then the * secondary CPU branches to this address. */ - writel(~0, MMIO_P2V(V2M_SYS_FLAGSCLR)); - writel(virt_to_phys(versatile_secondary_startup), - MMIO_P2V(V2M_SYS_FLAGSSET)); + v2m_flags_set(virt_to_phys(versatile_secondary_startup)); } diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c index b4a28ca0e50..c76f9144898 100644 --- a/arch/arm/mach-vexpress/v2m.c +++ b/arch/arm/mach-vexpress/v2m.c @@ -40,29 +40,45 @@ static struct map_desc v2m_io_desc[] __initdata = { { - .virtual = __MMIO_P2V(V2M_PA_CS7), + .virtual = V2M_PERIPH, .pfn = __phys_to_pfn(V2M_PA_CS7), .length = SZ_128K, .type = MT_DEVICE, }, }; -static void __init v2m_timer_init(void) +static void __iomem *v2m_sysreg_base; + +static void __init v2m_sysctl_init(void __iomem *base) { u32 scctrl; + if (WARN_ON(!base)) + return; + /* Select 1MHz TIMCLK as the reference clock for SP804 timers */ - scctrl = readl(MMIO_P2V(V2M_SYSCTL + SCCTRL)); + scctrl = readl(base + SCCTRL); scctrl |= SCCTRL_TIMEREN0SEL_TIMCLK; scctrl |= SCCTRL_TIMEREN1SEL_TIMCLK; - writel(scctrl, MMIO_P2V(V2M_SYSCTL + SCCTRL)); + writel(scctrl, base + SCCTRL); +} - writel(0, MMIO_P2V(V2M_TIMER0) + TIMER_CTRL); - writel(0, MMIO_P2V(V2M_TIMER1) + TIMER_CTRL); +static void __init v2m_sp804_init(void __iomem *base, unsigned int irq) +{ + if (WARN_ON(!base || irq == NO_IRQ)) + return; + + writel(0, base + TIMER_1_BASE + TIMER_CTRL); + writel(0, base + TIMER_2_BASE + TIMER_CTRL); - sp804_clocksource_init(MMIO_P2V(V2M_TIMER1), "v2m-timer1"); - sp804_clockevents_init(MMIO_P2V(V2M_TIMER0), IRQ_V2M_TIMER0, - "v2m-timer0"); + sp804_clocksource_init(base + TIMER_2_BASE, "v2m-timer1"); + sp804_clockevents_init(base + TIMER_1_BASE, irq, "v2m-timer0"); +} + +static void __init v2m_timer_init(void) +{ + v2m_sysctl_init(ioremap(V2M_SYSCTL, SZ_4K)); + v2m_sp804_init(ioremap(V2M_TIMER01, SZ_4K), IRQ_V2M_TIMER0); } static struct sys_timer v2m_timer = { @@ -82,14 +98,14 @@ int v2m_cfg_write(u32 devfn, u32 data) devfn |= SYS_CFG_START | SYS_CFG_WRITE; spin_lock(&v2m_cfg_lock); - val = readl(MMIO_P2V(V2M_SYS_CFGSTAT)); - writel(val & ~SYS_CFG_COMPLETE, MMIO_P2V(V2M_SYS_CFGSTAT)); + val = readl(v2m_sysreg_base + V2M_SYS_CFGSTAT); + writel(val & ~SYS_CFG_COMPLETE, v2m_sysreg_base + V2M_SYS_CFGSTAT); - writel(data, MMIO_P2V(V2M_SYS_CFGDATA)); - writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL)); + writel(data, v2m_sysreg_base + V2M_SYS_CFGDATA); + writel(devfn, v2m_sysreg_base + V2M_SYS_CFGCTRL); do { - val = readl(MMIO_P2V(V2M_SYS_CFGSTAT)); + val = readl(v2m_sysreg_base + V2M_SYS_CFGSTAT); } while (val == 0); spin_unlock(&v2m_cfg_lock); @@ -103,22 +119,28 @@ int v2m_cfg_read(u32 devfn, u32 *data) devfn |= SYS_CFG_START; spin_lock(&v2m_cfg_lock); - writel(0, MMIO_P2V(V2M_SYS_CFGSTAT)); - writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL)); + writel(0, v2m_sysreg_base + V2M_SYS_CFGSTAT); + writel(devfn, v2m_sysreg_base + V2M_SYS_CFGCTRL); mb(); do { cpu_relax(); - val = readl(MMIO_P2V(V2M_SYS_CFGSTAT)); + val = readl(v2m_sysreg_base + V2M_SYS_CFGSTAT); } while (val == 0); - *data = readl(MMIO_P2V(V2M_SYS_CFGDATA)); + *data = readl(v2m_sysreg_base + V2M_SYS_CFGDATA); spin_unlock(&v2m_cfg_lock); return !!(val & SYS_CFG_ERR); } +void __init v2m_flags_set(u32 data) +{ + writel(~0, v2m_sysreg_base + V2M_SYS_FLAGSCLR); + writel(data, v2m_sysreg_base + V2M_SYS_FLAGSSET); +} + static struct resource v2m_pcie_i2c_resource = { .start = V2M_SERIAL_BUS_PCI, @@ -204,7 +226,7 @@ static struct platform_device v2m_usb_device = { static void v2m_flash_set_vpp(struct platform_device *pdev, int on) { - writel(on != 0, MMIO_P2V(V2M_SYS_FLASH)); + writel(on != 0, v2m_sysreg_base + V2M_SYS_FLASH); } static struct physmap_flash_data v2m_flash_data = { @@ -258,7 +280,7 @@ static struct platform_device v2m_cf_device = { static unsigned int v2m_mmci_status(struct device *dev) { - return readl(MMIO_P2V(V2M_SYS_MCI)) & (1 << 0); + return readl(v2m_sysreg_base + V2M_SYS_MCI) & (1 << 0); } static struct mmci_platform_data v2m_mmci_data = { @@ -371,7 +393,7 @@ static void __init v2m_init_early(void) { ct_desc->init_early(); clkdev_add_table(v2m_lookups, ARRAY_SIZE(v2m_lookups)); - versatile_sched_clock_init(MMIO_P2V(V2M_SYS_24MHZ), 24000000); + versatile_sched_clock_init(v2m_sysreg_base + V2M_SYS_24MHZ, 24000000); } static void v2m_power_off(void) @@ -400,7 +422,8 @@ static void __init v2m_populate_ct_desc(void) u32 current_tile_id; ct_desc = NULL; - current_tile_id = readl(MMIO_P2V(V2M_SYS_PROCID0)) & V2M_CT_ID_MASK; + current_tile_id = readl(v2m_sysreg_base + V2M_SYS_PROCID0) + & V2M_CT_ID_MASK; for (i = 0; i < ARRAY_SIZE(ct_descs) && !ct_desc; ++i) if (ct_descs[i]->id == current_tile_id) @@ -414,6 +437,7 @@ static void __init v2m_populate_ct_desc(void) static void __init v2m_map_io(void) { iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc)); + v2m_sysreg_base = ioremap(V2M_SYSREGS, SZ_4K); v2m_populate_ct_desc(); ct_desc->map_io(); } diff --git a/arch/arm/plat-nomadik/include/plat/mtu.h b/arch/arm/plat-nomadik/include/plat/mtu.h index 6508e7694a4..582641f3dc0 100644 --- a/arch/arm/plat-nomadik/include/plat/mtu.h +++ b/arch/arm/plat-nomadik/include/plat/mtu.h @@ -1,9 +1,7 @@ #ifndef __PLAT_MTU_H #define __PLAT_MTU_H -/* should be set by the platform code */ -extern void __iomem *mtu_base; - +void nmdk_timer_init(void __iomem *base); void nmdk_clkevt_reset(void); void nmdk_clksrc_reset(void); diff --git a/arch/arm/plat-nomadik/timer.c b/arch/arm/plat-nomadik/timer.c index ad1b45b605a..9222e5522a4 100644 --- a/arch/arm/plat-nomadik/timer.c +++ b/arch/arm/plat-nomadik/timer.c @@ -21,12 +21,6 @@ #include <asm/sched_clock.h> /* - * Guaranteed runtime conversion range in seconds for - * the clocksource and clockevent. - */ -#define MTU_MIN_RANGE 4 - -/* * The MTU device hosts four different counters, with 4 set of * registers. These are register names. */ @@ -66,12 +60,11 @@ #define MTU_PCELL2 0xff8 #define MTU_PCELL3 0xffC +static void __iomem *mtu_base; static bool clkevt_periodic; static u32 clk_prescale; static u32 nmdk_cycle; /* write-once */ -void __iomem *mtu_base; /* Assigned by machine code */ - #ifdef CONFIG_NOMADIK_MTU_SCHED_CLOCK /* * Override the global weak sched_clock symbol with this @@ -103,7 +96,6 @@ static int nmdk_clkevt_next(unsigned long evt, struct clock_event_device *ev) void nmdk_clkevt_reset(void) { if (clkevt_periodic) { - /* Timer: configure load and background-load, and fire it up */ writel(nmdk_cycle, mtu_base + MTU_LR(1)); writel(nmdk_cycle, mtu_base + MTU_BGLR(1)); @@ -121,7 +113,6 @@ void nmdk_clkevt_reset(void) static void nmdk_clkevt_mode(enum clock_event_mode mode, struct clock_event_device *dev) { - switch (mode) { case CLOCK_EVT_MODE_PERIODIC: clkevt_periodic = true; @@ -183,15 +174,16 @@ void nmdk_clksrc_reset(void) mtu_base + MTU_CR(0)); } -void __init nmdk_timer_init(void) +void __init nmdk_timer_init(void __iomem *base) { unsigned long rate; struct clk *clk0; + mtu_base = base; clk0 = clk_get_sys("mtu0", NULL); BUG_ON(IS_ERR(clk0)); - - clk_enable(clk0); + BUG_ON(clk_prepare(clk0) < 0); + BUG_ON(clk_enable(clk0) < 0); /* * Tick rate is 2.4MHz for Nomadik and 2.4Mhz, 100MHz or 133 MHz @@ -224,17 +216,8 @@ void __init nmdk_timer_init(void) setup_sched_clock(nomadik_read_sched_clock, 32, rate); #endif - /* Timer 1 is used for events */ - - clockevents_calc_mult_shift(&nmdk_clkevt, rate, MTU_MIN_RANGE); - - nmdk_clkevt.max_delta_ns = - clockevent_delta2ns(0xffffffff, &nmdk_clkevt); - nmdk_clkevt.min_delta_ns = - clockevent_delta2ns(0x00000002, &nmdk_clkevt); - nmdk_clkevt.cpumask = cpumask_of(0); - - /* Register irq and clockevents */ + /* Timer 1 is used for events, register irq and clockevents */ setup_irq(IRQ_MTU0, &nmdk_timer_irq); - clockevents_register_device(&nmdk_clkevt); + nmdk_clkevt.cpumask = cpumask_of(0); + clockevents_config_and_register(&nmdk_clkevt, rate, 2, 0xffffffffU); } diff --git a/arch/arm/plat-versatile/Makefile b/arch/arm/plat-versatile/Makefile index 69714db47c3..a5cb1945bdc 100644 --- a/arch/arm/plat-versatile/Makefile +++ b/arch/arm/plat-versatile/Makefile @@ -1,5 +1,4 @@ obj-y := clock.o -obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o obj-$(CONFIG_PLAT_VERSATILE_CLCD) += clcd.o obj-$(CONFIG_PLAT_VERSATILE_FPGA_IRQ) += fpga-irq.o obj-$(CONFIG_PLAT_VERSATILE_LEDS) += leds.o diff --git a/arch/arm/plat-versatile/localtimer.c b/arch/arm/plat-versatile/localtimer.c deleted file mode 100644 index 0fb3961999b..00000000000 --- a/arch/arm/plat-versatile/localtimer.c +++ /dev/null @@ -1,27 +0,0 @@ -/* - * linux/arch/arm/plat-versatile/localtimer.c - * - * Copyright (C) 2002 ARM Ltd. - * 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/init.h> -#include <linux/smp.h> -#include <linux/clockchips.h> - -#include <asm/smp_twd.h> -#include <asm/localtimer.h> -#include <mach/irqs.h> - -/* - * Setup the local clock events for a CPU. - */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - evt->irq = IRQ_LOCALTIMER; - twd_timer_setup(evt); - return 0; -} |