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ARM: sa11x0/pxa: convert OS timer registers to IOMEM

Browse source 
Make the OS timer registers have IOMEM like properities so they can
be passed to readl_relaxed/writel_relaxed() et.al. rather than being
straight volatile dereferences.  Add linux/io.h includes where
required.

linux/io.h includes added to arch/arm/mach-sa1100/cpu-sa1100.c,
 arch/arm/mach-sa1100/jornada720_ssp.c, arch/arm/mach-sa1100/leds-lart.c
 drivers/input/touchscreen/jornada720_ts.c, drivers/pcmcia/sa1100_shannon.c
from Arnd.

This fixes these warnings:

arch/arm/mach-sa1100/time.c: In function 'sa1100_timer_init':
arch/arm/mach-sa1100/time.c:104: warning: passing argument 1 of 'clocksource_mmio_init' discards qualifiers from pointer target type
arch/arm/mach-pxa/time.c: In function 'pxa_timer_init':
arch/arm/mach-pxa/time.c:126: warning: passing argument 1 of 'clocksource_mmio_init' discards qualifiers from pointer target type

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2012-06-06 11:42:36 +01:00
parent bcccc50ce8
commit 3169663ac5
19 changed files with 97 additions and 82 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
arch/arm/mach-pxa/include/mach/regs-ost.h
View file

@ -7,17 +7,17 @@
* OS Timer & Match Registers * OS Timer & Match Registers
*/ */
#define OSMR0 __REG(0x40A00000) /* */ #define OSMR0 io_p2v(0x40A00000) /* */
#define OSMR1 __REG(0x40A00004) /* */ #define OSMR1 io_p2v(0x40A00004) /* */
#define OSMR2 __REG(0x40A00008) /* */ #define OSMR2 io_p2v(0x40A00008) /* */
#define OSMR3 __REG(0x40A0000C) /* */ #define OSMR3 io_p2v(0x40A0000C) /* */
#define OSMR4 __REG(0x40A00080) /* */ #define OSMR4 io_p2v(0x40A00080) /* */
#define OSCR __REG(0x40A00010) /* OS Timer Counter Register */ #define OSCR io_p2v(0x40A00010) /* OS Timer Counter Register */
#define OSCR4 __REG(0x40A00040) /* OS Timer Counter Register */ #define OSCR4 io_p2v(0x40A00040) /* OS Timer Counter Register */
#define OMCR4 __REG(0x40A000C0) /* */ #define OMCR4 io_p2v(0x40A000C0) /* */
#define OSSR __REG(0x40A00014) /* OS Timer Status Register */ #define OSSR io_p2v(0x40A00014) /* OS Timer Status Register */
#define OWER __REG(0x40A00018) /* OS Timer Watchdog Enable Register */ #define OWER io_p2v(0x40A00018) /* OS Timer Watchdog Enable Register */
#define OIER __REG(0x40A0001C) /* OS Timer Interrupt Enable Register */ #define OIER io_p2v(0x40A0001C) /* OS Timer Interrupt Enable Register */
#define OSSR_M3 (1 << 3) /* Match status channel 3 */ #define OSSR_M3 (1 << 3) /* Match status channel 3 */
#define OSSR_M2 (1 << 2) /* Match status channel 2 */ #define OSSR_M2 (1 << 2) /* Match status channel 2 */

7
arch/arm/mach-pxa/reset.c
View file

@ -77,9 +77,10 @@ static void do_gpio_reset(void)
static void do_hw_reset(void) static void do_hw_reset(void)
{ {
/* Initialize the watchdog and let it fire */ /* Initialize the watchdog and let it fire */
OWER = OWER_WME; writel_relaxed(OWER_WME, OWER);
OSSR = OSSR_M3; writel_relaxed(OSSR_M3, OSSR);
OSMR3 = OSCR + 368640; /* ... in 100 ms */ /* ... in 100 ms */
writel_relaxed(readl_relaxed(OSCR) + 368640, OSMR3);
} }
void pxa_restart(char mode, const char *cmd) void pxa_restart(char mode, const char *cmd)

52
arch/arm/mach-pxa/time.c
View file

@ -35,7 +35,7 @@
static u32 notrace pxa_read_sched_clock(void) static u32 notrace pxa_read_sched_clock(void)
{ {
return OSCR; return readl_relaxed(OSCR);
} }
@ -47,8 +47,8 @@ pxa_ost0_interrupt(int irq, void *dev_id)
struct clock_event_device *c = dev_id; struct clock_event_device *c = dev_id;
/* Disarm the compare/match, signal the event. */ /* Disarm the compare/match, signal the event. */
OIER &= ~OIER_E0; writel_relaxed(readl_relaxed(OIER) & ~OIER_E0, OIER);
OSSR = OSSR_M0; writel_relaxed(OSSR_M0, OSSR);
c->event_handler(c); c->event_handler(c);
return IRQ_HANDLED; return IRQ_HANDLED;
@ -59,10 +59,10 @@ pxa_osmr0_set_next_event(unsigned long delta, struct clock_event_device *dev)
{ {
unsigned long next, oscr; unsigned long next, oscr;
OIER |= OIER_E0; writel_relaxed(readl_relaxed(OIER) | OIER_E0, OIER);
next = OSCR + delta; next = readl_relaxed(OSCR) + delta;
OSMR0 = next; writel_relaxed(next, OSMR0);
oscr = OSCR; oscr = readl_relaxed(OSCR);
return (signed)(next - oscr) <= MIN_OSCR_DELTA ? -ETIME : 0; return (signed)(next - oscr) <= MIN_OSCR_DELTA ? -ETIME : 0;
} }
@ -72,15 +72,15 @@ pxa_osmr0_set_mode(enum clock_event_mode mode, struct clock_event_device *dev)
{ {
switch (mode) { switch (mode) {
case CLOCK_EVT_MODE_ONESHOT: case CLOCK_EVT_MODE_ONESHOT:
OIER &= ~OIER_E0; writel_relaxed(readl_relaxed(OIER) & ~OIER_E0, OIER);
OSSR = OSSR_M0; writel_relaxed(OSSR_M0, OSSR);
break; break;
case CLOCK_EVT_MODE_UNUSED: case CLOCK_EVT_MODE_UNUSED:
case CLOCK_EVT_MODE_SHUTDOWN: case CLOCK_EVT_MODE_SHUTDOWN:
/* initializing, released, or preparing for suspend */ /* initializing, released, or preparing for suspend */
OIER &= ~OIER_E0; writel_relaxed(readl_relaxed(OIER) & ~OIER_E0, OIER);
OSSR = OSSR_M0; writel_relaxed(OSSR_M0, OSSR);
break; break;
case CLOCK_EVT_MODE_RESUME: case CLOCK_EVT_MODE_RESUME:
@ -108,8 +108,8 @@ static void __init pxa_timer_init(void)
{ {
unsigned long clock_tick_rate = get_clock_tick_rate(); unsigned long clock_tick_rate = get_clock_tick_rate();
OIER = 0; writel_relaxed(0, OIER);
OSSR = OSSR_M0 | OSSR_M1 | OSSR_M2 | OSSR_M3; writel_relaxed(OSSR_M0 | OSSR_M1 | OSSR_M2 | OSSR_M3, OSSR);
setup_sched_clock(pxa_read_sched_clock, 32, clock_tick_rate); setup_sched_clock(pxa_read_sched_clock, 32, clock_tick_rate);
@ -122,7 +122,7 @@ static void __init pxa_timer_init(void)
setup_irq(IRQ_OST0, &pxa_ost0_irq); setup_irq(IRQ_OST0, &pxa_ost0_irq);
clocksource_mmio_init(&OSCR, "oscr0", clock_tick_rate, 200, 32, clocksource_mmio_init(OSCR, "oscr0", clock_tick_rate, 200, 32,
clocksource_mmio_readl_up); clocksource_mmio_readl_up);
clockevents_register_device(&ckevt_pxa_osmr0); clockevents_register_device(&ckevt_pxa_osmr0);
} }
@ -132,12 +132,12 @@ static unsigned long osmr[4], oier, oscr;
static void pxa_timer_suspend(void) static void pxa_timer_suspend(void)
{ {
osmr[0] = OSMR0; osmr[0] = readl_relaxed(OSMR0);
osmr[1] = OSMR1; osmr[1] = readl_relaxed(OSMR1);
osmr[2] = OSMR2; osmr[2] = readl_relaxed(OSMR2);
osmr[3] = OSMR3; osmr[3] = readl_relaxed(OSMR3);
oier = OIER; oier = readl_relaxed(OIER);
oscr = OSCR; oscr = readl_relaxed(OSCR);
} }
static void pxa_timer_resume(void) static void pxa_timer_resume(void)
@ -151,12 +151,12 @@ static void pxa_timer_resume(void)
if (osmr[0] - oscr < MIN_OSCR_DELTA) if (osmr[0] - oscr < MIN_OSCR_DELTA)
osmr[0] += MIN_OSCR_DELTA; osmr[0] += MIN_OSCR_DELTA;
OSMR0 = osmr[0]; writel_relaxed(osmr[0], OSMR0);
OSMR1 = osmr[1]; writel_relaxed(osmr[1], OSMR1);
OSMR2 = osmr[2]; writel_relaxed(osmr[2], OSMR2);
OSMR3 = osmr[3]; writel_relaxed(osmr[3], OSMR3);
OIER = oier; writel_relaxed(oier, OIER);
OSCR = oscr; writel_relaxed(oscr, OSCR);
} }
#else #else
#define pxa_timer_suspend NULL #define pxa_timer_suspend NULL

2
arch/arm/mach-sa1100/assabet.c
View file

@ -362,7 +362,7 @@ static void __init assabet_init(void)
static void __init map_sa1100_gpio_regs( void ) static void __init map_sa1100_gpio_regs( void )
{ {
unsigned long phys = __PREG(GPLR) & PMD_MASK; unsigned long phys = __PREG(GPLR) & PMD_MASK;
unsigned long virt = io_p2v(phys); unsigned long virt = (unsigned long)io_p2v(phys);
int prot = PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_DOMAIN(DOMAIN_IO); int prot = PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_DOMAIN(DOMAIN_IO);
pmd_t *pmd; pmd_t *pmd;

1
arch/arm/mach-sa1100/cpu-sa1100.c
View file

@ -87,6 +87,7 @@
#include <linux/types.h> #include <linux/types.h>
#include <linux/init.h> #include <linux/init.h>
#include <linux/cpufreq.h> #include <linux/cpufreq.h>
#include <linux/io.h>
#include <asm/cputype.h> #include <asm/cputype.h>

1
arch/arm/mach-sa1100/cpu-sa1110.c
View file

@ -19,6 +19,7 @@
#include <linux/cpufreq.h> #include <linux/cpufreq.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/init.h> #include <linux/init.h>
#include <linux/io.h>
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/moduleparam.h> #include <linux/moduleparam.h>
#include <linux/types.h> #include <linux/types.h>

16
arch/arm/mach-sa1100/include/mach/SA-1100.h
View file

@ -830,14 +830,14 @@
* (read/write). * (read/write).
*/ */
#define OSMR0 __REG(0x90000000) /* OS timer Match Reg. 0 */ #define OSMR0 io_p2v(0x90000000) /* OS timer Match Reg. 0 */
#define OSMR1 __REG(0x90000004) /* OS timer Match Reg. 1 */ #define OSMR1 io_p2v(0x90000004) /* OS timer Match Reg. 1 */
#define OSMR2 __REG(0x90000008) /* OS timer Match Reg. 2 */ #define OSMR2 io_p2v(0x90000008) /* OS timer Match Reg. 2 */
#define OSMR3 __REG(0x9000000c) /* OS timer Match Reg. 3 */ #define OSMR3 io_p2v(0x9000000c) /* OS timer Match Reg. 3 */
#define OSCR __REG(0x90000010) /* OS timer Counter Reg. */ #define OSCR io_p2v(0x90000010) /* OS timer Counter Reg. */
#define OSSR __REG(0x90000014 ) /* OS timer Status Reg. */ #define OSSR io_p2v(0x90000014) /* OS timer Status Reg. */
#define OWER __REG(0x90000018 ) /* OS timer Watch-dog Enable Reg. */ #define OWER io_p2v(0x90000018) /* OS timer Watch-dog Enable Reg. */
#define OIER __REG(0x9000001C ) /* OS timer Interrupt Enable Reg. */ #define OIER io_p2v(0x9000001C) /* OS timer Interrupt Enable Reg. */
#define OSSR_M(Nb) /* Match detected [0..3] */ \ #define OSSR_M(Nb) /* Match detected [0..3] */ \
(0x00000001 << (Nb)) (0x00000001 << (Nb))

1
arch/arm/mach-sa1100/include/mach/gpio.h
View file

@ -24,6 +24,7 @@
#ifndef __ASM_ARCH_SA1100_GPIO_H #ifndef __ASM_ARCH_SA1100_GPIO_H
#define __ASM_ARCH_SA1100_GPIO_H #define __ASM_ARCH_SA1100_GPIO_H
#include <linux/io.h>
#include <mach/hardware.h> #include <mach/hardware.h>
#include <asm/irq.h> #include <asm/irq.h>
#include <asm-generic/gpio.h> #include <asm-generic/gpio.h>

6
arch/arm/mach-sa1100/include/mach/hardware.h
View file

@ -32,7 +32,7 @@
#define PIO_START 0x80000000 /* physical start of IO space */ #define PIO_START 0x80000000 /* physical start of IO space */
#define io_p2v( x ) \ #define io_p2v( x ) \
( (((x)&0x00ffffff) | (((x)&0x30000000)>>VIO_SHIFT)) + VIO_BASE ) IOMEM( (((x)&0x00ffffff) | (((x)&0x30000000)>>VIO_SHIFT)) + VIO_BASE )
#define io_v2p( x ) \ #define io_v2p( x ) \
( (((x)&0x00ffffff) | (((x)&(0x30000000>>VIO_SHIFT))<<VIO_SHIFT)) + PIO_START ) ( (((x)&0x00ffffff) | (((x)&(0x30000000>>VIO_SHIFT))<<VIO_SHIFT)) + PIO_START )
@ -47,6 +47,8 @@
#define CPU_SA1110_ID (0x6901b110) #define CPU_SA1110_ID (0x6901b110)
#define CPU_SA1110_MASK (0xfffffff0) #define CPU_SA1110_MASK (0xfffffff0)
#define __MREG(x) IOMEM(io_p2v(x))
#ifndef __ASSEMBLY__ #ifndef __ASSEMBLY__
#include <asm/cputype.h> #include <asm/cputype.h>
@ -56,7 +58,7 @@
#define cpu_is_sa1100() ((read_cpuid_id() & CPU_SA1100_MASK) == CPU_SA1100_ID) #define cpu_is_sa1100() ((read_cpuid_id() & CPU_SA1100_MASK) == CPU_SA1100_ID)
#define cpu_is_sa1110() ((read_cpuid_id() & CPU_SA1110_MASK) == CPU_SA1110_ID) #define cpu_is_sa1110() ((read_cpuid_id() & CPU_SA1110_MASK) == CPU_SA1110_ID)
# define __REG(x) (*((volatile unsigned long *)io_p2v(x))) # define __REG(x) (*((volatile unsigned long __iomem *)io_p2v(x)))
# define __PREG(x) (io_v2p((unsigned long)&(x))) # define __PREG(x) (io_v2p((unsigned long)&(x)))
static inline unsigned long get_clock_tick_rate(void) static inline unsigned long get_clock_tick_rate(void)

2
arch/arm/mach-sa1100/include/mach/uncompress.h
View file

@ -8,6 +8,8 @@
#include "hardware.h" #include "hardware.h"
#define IOMEM(x) (x)
/* /*
* The following code assumes the serial port has already been * The following code assumes the serial port has already been
* initialized by the bootloader. We search for the first enabled * initialized by the bootloader. We search for the first enabled

1
arch/arm/mach-sa1100/irq.c
View file

@ -12,6 +12,7 @@
#include <linux/init.h> #include <linux/init.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/interrupt.h> #include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/irq.h> #include <linux/irq.h>
#include <linux/ioport.h> #include <linux/ioport.h>
#include <linux/syscore_ops.h> #include <linux/syscore_ops.h>

1
arch/arm/mach-sa1100/jornada720_ssp.c
View file

@ -18,6 +18,7 @@
#include <linux/module.h> #include <linux/module.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/sched.h> #include <linux/sched.h>
#include <linux/io.h>
#include <mach/hardware.h> #include <mach/hardware.h>
#include <mach/jornada720.h> #include <mach/jornada720.h>

1
arch/arm/mach-sa1100/leds-cerf.c
View file

@ -4,6 +4,7 @@
* Author: ??? * Author: ???
*/ */
#include <linux/init.h> #include <linux/init.h>
#include <linux/io.h>
#include <mach/hardware.h> #include <mach/hardware.h>
#include <asm/leds.h> #include <asm/leds.h>

1
arch/arm/mach-sa1100/leds-lart.c
View file

@ -10,6 +10,7 @@
* pace of the LED. * pace of the LED.
*/ */
#include <linux/init.h> #include <linux/init.h>
#include <linux/io.h>
#include <mach/hardware.h> #include <mach/hardware.h>
#include <asm/leds.h> #include <asm/leds.h>

1
arch/arm/mach-sa1100/pm.c
View file

@ -23,6 +23,7 @@
* Storage is local on the stack now. * Storage is local on the stack now.
*/ */
#include <linux/init.h> #include <linux/init.h>
#include <linux/io.h>
#include <linux/suspend.h> #include <linux/suspend.h>
#include <linux/errno.h> #include <linux/errno.h>
#include <linux/time.h> #include <linux/time.h>

48
arch/arm/mach-sa1100/time.c
View file

@ -22,7 +22,7 @@
static u32 notrace sa1100_read_sched_clock(void) static u32 notrace sa1100_read_sched_clock(void)
{ {
return OSCR; return readl_relaxed(OSCR);
} }
#define MIN_OSCR_DELTA 2 #define MIN_OSCR_DELTA 2
@ -32,8 +32,8 @@ static irqreturn_t sa1100_ost0_interrupt(int irq, void *dev_id)
struct clock_event_device *c = dev_id; struct clock_event_device *c = dev_id;
/* Disarm the compare/match, signal the event. */ /* Disarm the compare/match, signal the event. */
OIER &= ~OIER_E0; writel_relaxed(readl_relaxed(OIER) & ~OIER_E0, OIER);
OSSR = OSSR_M0; writel_relaxed(OSSR_M0, OSSR);
c->event_handler(c); c->event_handler(c);
return IRQ_HANDLED; return IRQ_HANDLED;
@ -44,10 +44,10 @@ sa1100_osmr0_set_next_event(unsigned long delta, struct clock_event_device *c)
{ {
unsigned long next, oscr; unsigned long next, oscr;
OIER |= OIER_E0; writel_relaxed(readl_relaxed(OIER) | OIER_E0, OIER);
next = OSCR + delta; next = readl_relaxed(OSCR) + delta;
OSMR0 = next; writel_relaxed(next, OSMR0);
oscr = OSCR; oscr = readl_relaxed(OSCR);
return (signed)(next - oscr) <= MIN_OSCR_DELTA ? -ETIME : 0; return (signed)(next - oscr) <= MIN_OSCR_DELTA ? -ETIME : 0;
} }
@ -59,8 +59,8 @@ sa1100_osmr0_set_mode(enum clock_event_mode mode, struct clock_event_device *c)
case CLOCK_EVT_MODE_ONESHOT: case CLOCK_EVT_MODE_ONESHOT:
case CLOCK_EVT_MODE_UNUSED: case CLOCK_EVT_MODE_UNUSED:
case CLOCK_EVT_MODE_SHUTDOWN: case CLOCK_EVT_MODE_SHUTDOWN:
OIER &= ~OIER_E0; writel_relaxed(readl_relaxed(OIER) & ~OIER_E0, OIER);
OSSR = OSSR_M0; writel_relaxed(OSSR_M0, OSSR);
break; break;
case CLOCK_EVT_MODE_RESUME: case CLOCK_EVT_MODE_RESUME:
@ -86,8 +86,8 @@ static struct irqaction sa1100_timer_irq = {
static void __init sa1100_timer_init(void) static void __init sa1100_timer_init(void)
{ {
OIER = 0; writel_relaxed(0, OIER);
OSSR = OSSR_M0 | OSSR_M1 | OSSR_M2 | OSSR_M3; writel_relaxed(OSSR_M0 | OSSR_M1 | OSSR_M2 | OSSR_M3, OSSR);
setup_sched_clock(sa1100_read_sched_clock, 32, 3686400); setup_sched_clock(sa1100_read_sched_clock, 32, 3686400);
@ -100,7 +100,7 @@ static void __init sa1100_timer_init(void)
setup_irq(IRQ_OST0, &sa1100_timer_irq); setup_irq(IRQ_OST0, &sa1100_timer_irq);
clocksource_mmio_init(&OSCR, "oscr", CLOCK_TICK_RATE, 200, 32, clocksource_mmio_init(OSCR, "oscr", CLOCK_TICK_RATE, 200, 32,
clocksource_mmio_readl_up); clocksource_mmio_readl_up);
clockevents_register_device(&ckevt_sa1100_osmr0); clockevents_register_device(&ckevt_sa1100_osmr0);
} }
@ -110,26 +110,26 @@ unsigned long osmr[4], oier;
static void sa1100_timer_suspend(void) static void sa1100_timer_suspend(void)
{ {
osmr[0] = OSMR0; osmr[0] = readl_relaxed(OSMR0);
osmr[1] = OSMR1; osmr[1] = readl_relaxed(OSMR1);
osmr[2] = OSMR2; osmr[2] = readl_relaxed(OSMR2);
osmr[3] = OSMR3; osmr[3] = readl_relaxed(OSMR3);
oier = OIER; oier = readl_relaxed(OIER);
} }
static void sa1100_timer_resume(void) static void sa1100_timer_resume(void)
{ {
OSSR = 0x0f; writel_relaxed(0x0f, OSSR);
OSMR0 = osmr[0]; writel_relaxed(osmr[0], OSMR0);
OSMR1 = osmr[1]; writel_relaxed(osmr[1], OSMR1);
OSMR2 = osmr[2]; writel_relaxed(osmr[2], OSMR2);
OSMR3 = osmr[3]; writel_relaxed(osmr[3], OSMR3);
OIER = oier; writel_relaxed(oier, OIER);
/* /*
* OSMR0 is the system timer: make sure OSCR is sufficiently behind * OSMR0 is the system timer: make sure OSCR is sufficiently behind
*/ */
OSCR = OSMR0 - LATCH; writel_relaxed(OSMR0 - LATCH, OSCR);
} }
#else #else
#define sa1100_timer_suspend NULL #define sa1100_timer_suspend NULL

1
drivers/input/touchscreen/jornada720_ts.c
View file

@ -19,6 +19,7 @@
#include <linux/interrupt.h> #include <linux/interrupt.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/io.h>
#include <mach/hardware.h> #include <mach/hardware.h>
#include <mach/jornada720.h> #include <mach/jornada720.h>

1
drivers/pcmcia/sa1100_shannon.c
View file

@ -8,6 +8,7 @@
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/device.h> #include <linux/device.h>
#include <linux/init.h> #include <linux/init.h>
#include <linux/io.h>
#include <mach/hardware.h> #include <mach/hardware.h>
#include <asm/mach-types.h> #include <asm/mach-types.h>

14
drivers/watchdog/sa1100_wdt.c
View file

@ -54,10 +54,10 @@ static int sa1100dog_open(struct inode *inode, struct file *file)
return -EBUSY; return -EBUSY;
/* Activate SA1100 Watchdog timer */ /* Activate SA1100 Watchdog timer */
OSMR3 = OSCR + pre_margin; writel_relaxed(readl_relaxed(OSCR) + pre_margin, OSMR3);
OSSR = OSSR_M3; writel_relaxed(OSSR_M3, OSSR);
OWER = OWER_WME; writel_relaxed(OWER_WME, OWER);
OIER |= OIER_E3; writel_relaxed(readl_relaxed(OIER) | OIER_E3, OIER);
return nonseekable_open(inode, file); return nonseekable_open(inode, file);
} }
@ -80,7 +80,7 @@ static ssize_t sa1100dog_write(struct file *file, const char __user *data,
{ {
if (len) if (len)
/* Refresh OSMR3 timer. */ /* Refresh OSMR3 timer. */
OSMR3 = OSCR + pre_margin; writel_relaxed(readl_relaxed(OSCR) + pre_margin, OSMR3);
return len; return len;
} }
@ -114,7 +114,7 @@ static long sa1100dog_ioctl(struct file *file, unsigned int cmd,
break; break;
case WDIOC_KEEPALIVE: case WDIOC_KEEPALIVE:
OSMR3 = OSCR + pre_margin; writel_relaxed(readl_relaxed(OSCR) + pre_margin, OSMR3);
ret = 0; ret = 0;
break; break;
@ -129,7 +129,7 @@ static long sa1100dog_ioctl(struct file *file, unsigned int cmd,
} }
pre_margin = oscr_freq * time; pre_margin = oscr_freq * time;
OSMR3 = OSCR + pre_margin; writel_relaxed(readl_relaxed(OSCR) + pre_margin, OSMR3);
/*fall through*/ /*fall through*/
case WDIOC_GETTIMEOUT: case WDIOC_GETTIMEOUT: