plat-orion: share time handling code
Split off Orion time handling code into plat-orion/.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Reviewed-by: Tzachi Perelstein <tzachi@marvell.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
diff --git a/arch/arm/mach-orion/Makefile b/arch/arm/mach-orion/Makefile
index f91d937..d894caa 100644
--- a/arch/arm/mach-orion/Makefile
+++ b/arch/arm/mach-orion/Makefile
@@ -1,4 +1,4 @@
-obj-y += common.o addr-map.o pci.o gpio.o irq.o time.o
+obj-y += common.o addr-map.o pci.o gpio.o irq.o
obj-$(CONFIG_MACH_DB88F5281) += db88f5281-setup.o
obj-$(CONFIG_MACH_RD88F5182) += rd88f5182-setup.o
obj-$(CONFIG_MACH_KUROBOX_PRO) += kurobox_pro-setup.o
diff --git a/arch/arm/mach-orion/common.c b/arch/arm/mach-orion/common.c
index a32fe8e..86d7f7c 100644
--- a/arch/arm/mach-orion/common.c
+++ b/arch/arm/mach-orion/common.c
@@ -23,8 +23,11 @@
#include <asm/timex.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
+#include <asm/mach/time.h>
#include <asm/arch/hardware.h>
+#include <asm/arch/orion.h>
#include <asm/arch/platform.h>
+#include <asm/plat-orion/time.h>
#include "common.h"
/*****************************************************************************
@@ -296,6 +299,19 @@
}
/*****************************************************************************
+ * Time handling
+ ****************************************************************************/
+
+static void orion_timer_init(void)
+{
+ orion_time_init(IRQ_ORION_BRIDGE, ORION_TCLK);
+}
+
+struct sys_timer orion_timer = {
+ .init = orion_timer_init,
+};
+
+/*****************************************************************************
* General
****************************************************************************/
diff --git a/arch/arm/mach-orion/common.h b/arch/arm/mach-orion/common.h
index 9a5afef..3898e1b 100644
--- a/arch/arm/mach-orion/common.h
+++ b/arch/arm/mach-orion/common.h
@@ -8,6 +8,7 @@
void __init orion_map_io(void);
void __init orion_init_irq(void);
void __init orion_init(void);
+extern struct sys_timer orion_timer;
/*
* Enumerations and functions for Orion windows mapping. Used by Orion core
@@ -57,11 +58,6 @@
void gpio_display(void); /* debug */
/*
- * Orion system timer (clocksource + clockevnt, /mach-orion/time.c)
- */
-extern struct sys_timer orion_timer;
-
-/*
* Pull in Orion Ethernet platform_data, used by machine-setup
*/
diff --git a/arch/arm/mach-orion/time.c b/arch/arm/mach-orion/time.c
deleted file mode 100644
index bd4262d..0000000
--- a/arch/arm/mach-orion/time.c
+++ /dev/null
@@ -1,181 +0,0 @@
-/*
- * arch/arm/mach-orion/time.c
- *
- * Core time functions for Marvell Orion System On Chip
- *
- * Maintainer: Tzachi Perelstein <tzachi@marvell.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#include <linux/kernel.h>
-#include <linux/clockchips.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <asm/mach/time.h>
-#include <asm/arch/orion.h>
-#include "common.h"
-
-/*
- * Timer0: clock_event_device, Tick.
- * Timer1: clocksource, Free running.
- * WatchDog: Not used.
- *
- * Timers are counting down.
- */
-#define CLOCKEVENT 0
-#define CLOCKSOURCE 1
-
-/*
- * Timers bits
- */
-#define BRIDGE_INT_TIMER(x) (1 << ((x) + 1))
-#define TIMER_EN(x) (1 << ((x) * 2))
-#define TIMER_RELOAD_EN(x) (1 << (((x) * 2) + 1))
-#define BRIDGE_INT_TIMER_WD (1 << 3)
-#define TIMER_WD_EN (1 << 4)
-#define TIMER_WD_RELOAD_EN (1 << 5)
-
-static cycle_t orion_clksrc_read(void)
-{
- return (0xffffffff - orion_read(TIMER_VAL(CLOCKSOURCE)));
-}
-
-static struct clocksource orion_clksrc = {
- .name = "orion_clocksource",
- .shift = 20,
- .rating = 300,
- .read = orion_clksrc_read,
- .mask = CLOCKSOURCE_MASK(32),
- .flags = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-static int
-orion_clkevt_next_event(unsigned long delta, struct clock_event_device *dev)
-{
- unsigned long flags;
-
- if (delta == 0)
- return -ETIME;
-
- local_irq_save(flags);
-
- /*
- * Clear and enable timer interrupt bit
- */
- orion_write(BRIDGE_CAUSE, ~BRIDGE_INT_TIMER(CLOCKEVENT));
- orion_setbits(BRIDGE_MASK, BRIDGE_INT_TIMER(CLOCKEVENT));
-
- /*
- * Setup new timer value
- */
- orion_write(TIMER_VAL(CLOCKEVENT), delta);
-
- /*
- * Disable auto reload and kickoff the timer
- */
- orion_clrbits(TIMER_CTRL, TIMER_RELOAD_EN(CLOCKEVENT));
- orion_setbits(TIMER_CTRL, TIMER_EN(CLOCKEVENT));
-
- local_irq_restore(flags);
-
- return 0;
-}
-
-static void
-orion_clkevt_mode(enum clock_event_mode mode, struct clock_event_device *dev)
-{
- unsigned long flags;
-
- local_irq_save(flags);
-
- if (mode == CLOCK_EVT_MODE_PERIODIC) {
- /*
- * Setup latch cycles in timer and enable reload interrupt.
- */
- orion_write(TIMER_VAL_RELOAD(CLOCKEVENT), LATCH);
- orion_write(TIMER_VAL(CLOCKEVENT), LATCH);
- orion_setbits(BRIDGE_MASK, BRIDGE_INT_TIMER(CLOCKEVENT));
- orion_setbits(TIMER_CTRL, TIMER_RELOAD_EN(CLOCKEVENT) |
- TIMER_EN(CLOCKEVENT));
- } else {
- /*
- * Disable timer and interrupt
- */
- orion_clrbits(BRIDGE_MASK, BRIDGE_INT_TIMER(CLOCKEVENT));
- orion_write(BRIDGE_CAUSE, ~BRIDGE_INT_TIMER(CLOCKEVENT));
- orion_clrbits(TIMER_CTRL, TIMER_RELOAD_EN(CLOCKEVENT) |
- TIMER_EN(CLOCKEVENT));
- }
-
- local_irq_restore(flags);
-}
-
-static struct clock_event_device orion_clkevt = {
- .name = "orion_tick",
- .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
- .shift = 32,
- .rating = 300,
- .cpumask = CPU_MASK_CPU0,
- .set_next_event = orion_clkevt_next_event,
- .set_mode = orion_clkevt_mode,
-};
-
-static irqreturn_t orion_timer_interrupt(int irq, void *dev_id)
-{
- /*
- * Clear cause bit and do event
- */
- orion_write(BRIDGE_CAUSE, ~BRIDGE_INT_TIMER(CLOCKEVENT));
- orion_clkevt.event_handler(&orion_clkevt);
- return IRQ_HANDLED;
-}
-
-static struct irqaction orion_timer_irq = {
- .name = "orion_tick",
- .flags = IRQF_DISABLED | IRQF_TIMER,
- .handler = orion_timer_interrupt
-};
-
-static void orion_timer_init(void)
-{
- /*
- * Setup clocksource free running timer (no interrupt on reload)
- */
- orion_write(TIMER_VAL(CLOCKSOURCE), 0xffffffff);
- orion_write(TIMER_VAL_RELOAD(CLOCKSOURCE), 0xffffffff);
- orion_clrbits(BRIDGE_MASK, BRIDGE_INT_TIMER(CLOCKSOURCE));
- orion_setbits(TIMER_CTRL, TIMER_RELOAD_EN(CLOCKSOURCE) |
- TIMER_EN(CLOCKSOURCE));
-
- /*
- * Register clocksource
- */
- orion_clksrc.mult =
- clocksource_hz2mult(CLOCK_TICK_RATE, orion_clksrc.shift);
-
- clocksource_register(&orion_clksrc);
-
- /*
- * Connect and enable tick handler
- */
- setup_irq(IRQ_ORION_BRIDGE, &orion_timer_irq);
-
- /*
- * Register clockevent
- */
- orion_clkevt.mult =
- div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC, orion_clkevt.shift);
- orion_clkevt.max_delta_ns =
- clockevent_delta2ns(0xfffffffe, &orion_clkevt);
- orion_clkevt.min_delta_ns =
- clockevent_delta2ns(1, &orion_clkevt);
-
- clockevents_register_device(&orion_clkevt);
-}
-
-struct sys_timer orion_timer = {
- .init = orion_timer_init,
-};