Merge branch 'renesas/timer' into next/timer
Conflicts:
arch/arm/mach-shmobile/timer.c
This resolves a nonobvious merge conflict between renesas
timer changes in the global timer changes with those
from the renesas soc branch and last minute bug fixes that
went into v3.3.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/Documentation/devicetree/bindings/arm/twd.txt b/Documentation/devicetree/bindings/arm/twd.txt
new file mode 100644
index 0000000..75b8610
--- /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 305635b..37c0ff9 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 263e8f3..4905f51 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 c0f4e7b..d6030ff 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 c6a1842..f77ffc1 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
+ * Register a local timer driver
*/
-void local_timer_stop(struct clock_event_device *);
-
-#endif
-
-/*
- * Setup a local timer interrupt for a CPU.
- */
-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 ef9ffba9..0f01f46 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 cdeb727..1ad84a6 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -246,6 +246,8 @@
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 @@
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 @@
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 @@
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 7a79b24..fef42b2 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 @@
* 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 @@
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 @@
/*
* 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 @@
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 @@
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 85b5527..edc4b94 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 @@
.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 @@
} 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 @@
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 @@
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 986958a..f8437dd 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 8394d51..bb1684f 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 @@
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 5a00e79..0000000
--- 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 55db9c4..190d570 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -71,7 +71,6 @@
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 3a16351..0000000
--- 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 c257281..a2eea86 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_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 11d0d8f..75f4be4 100644
--- a/arch/arm/mach-msm/timer.c
+++ b/arch/arm/mach-msm/timer.c
@@ -127,6 +127,45 @@
.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 @@
*__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 @@
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 7c878bf..b77cb84 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 @@
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 bcaeaf4..0000000
--- 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 bd76394..05c2ffc 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -23,7 +23,6 @@
# 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 31c0ac4..0000000
--- 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 5c9acea..c512bac 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 @@
#endif
#ifdef CONFIG_ARCH_OMAP4
+#ifdef CONFIG_LOCAL_TIMERS
+static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
+ OMAP44XX_LOCAL_TWD_BASE,
+ OMAP44XX_IRQ_LOCALTIMER);
+#endif
+
static void __init omap4_timer_init(void)
{
-#ifdef CONFIG_LOCAL_TIMERS
- twd_base = ioremap(OMAP44XX_LOCAL_TWD_BASE, SZ_256);
- BUG_ON(!twd_base);
-#endif
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 9578145..a2e9590 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 @@
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 @@
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 2147335..3bea5bd 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 @@
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 @@
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 ac71564..6ddcc61 100644
--- a/arch/arm/mach-realview/realview_pbx.c
+++ b/arch/arm/mach-realview/realview_pbx.c
@@ -298,6 +298,21 @@
}
}
+#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 @@
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 7ad6954..e7c2590 100644
--- a/arch/arm/mach-shmobile/Makefile
+++ b/arch/arm/mach-shmobile/Makefile
@@ -16,7 +16,6 @@
# 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 e41b61a..83ad3fe 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 ad9ccc9..0000000
--- 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 9933812..45fa392 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 4fe2e9e..9bb7b857 100644
--- a/arch/arm/mach-shmobile/smp-r8a7779.c
+++ b/arch/arm/mach-shmobile/smp-r8a7779.c
@@ -64,6 +64,8 @@
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 @@
{
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 2d0d421..c0a9093 100644
--- a/arch/arm/mach-shmobile/smp-sh73a0.c
+++ b/arch/arm/mach-shmobile/smp-sh73a0.c
@@ -42,6 +42,8 @@
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 @@
{
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 be1ad70..2fba5f3 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 @@
{
}
+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 e120ff5..f7d0443 100644
--- a/arch/arm/mach-tegra/Makefile
+++ b/arch/arm/mach-tegra/Makefile
@@ -13,7 +13,7 @@
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 e91d681..0000000
--- 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 1d1acda..1eed8d4 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 @@
.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 @@
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 @@
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 6bd2f45..35b3894 100644
--- a/arch/arm/mach-ux500/Makefile
+++ b/arch/arm/mach-ux500/Makefile
@@ -15,7 +15,6 @@
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 f418574..851308b 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 a7d363f..93d4039 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 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 5ba1133..0000000
--- 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 aea467d..e9d5807 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 @@
*
*/
- 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 f439715..3508f6e 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 @@
.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 b1e87c1..e5abe85 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));
}
+#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)
+{
+ 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
+
static void __init ct_ca9x4_init_irq(void)
{
- gic_init(0, 29, MMIO_P2V(A9_MPCORE_GIC_DIST),
- MMIO_P2V(A9_MPCORE_GIC_CPU));
+ gic_init(0, 29, ioremap(A9_MPCORE_GIC_DIST, SZ_4K),
+ ioremap(A9_MPCORE_GIC_CPU, SZ_256));
+ ca9x4_twd_init();
}
-#if 0
-static void __init ct_ca9x4_timer_init(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");
-}
-
-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 @@
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 @@
}
#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_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 a34d3d4..2260fde 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 0a3a375..b4c498c 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 124ffb1..a1ed6d6 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 @@
* 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 b4a28ca..c76f914 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;
- sp804_clocksource_init(MMIO_P2V(V2M_TIMER1), "v2m-timer1");
- sp804_clockevents_init(MMIO_P2V(V2M_TIMER0), IRQ_V2M_TIMER0,
- "v2m-timer0");
+ writel(0, base + TIMER_1_BASE + TIMER_CTRL);
+ writel(0, base + TIMER_2_BASE + TIMER_CTRL);
+
+ 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 @@
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 @@
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 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 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 @@
{
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 @@
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_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 6508e76..582641f 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 ad1b45b..9222e55 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 @@
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 @@
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 @@
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 @@
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 69714db..a5cb194 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 0fb3961..0000000
--- 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;
-}