arch/arm/mach-s3c/pm-core-s3c64xx.h

Source file repositories/reference/linux-study-clean/arch/arm/mach-s3c/pm-core-s3c64xx.h

File Facts

System
Linux kernel
Corpus path
arch/arm/mach-s3c/pm-core-s3c64xx.h
Extension
.h
Size
1628 bytes
Lines
68
Domain
Architecture Layer
Bucket
arch/arm
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __MACH_S3C64XX_PM_CORE_H
#define __MACH_S3C64XX_PM_CORE_H __FILE__

#include <linux/serial_s3c.h>
#include <linux/delay.h>

#include "regs-gpio.h"
#include "regs-clock.h"
#include "map.h"

static inline void s3c_pm_debug_init_uart(void)
{
}

static inline void s3c_pm_arch_prepare_irqs(void)
{
	/* VIC should have already been taken care of */

	/* clear any pending EINT0 interrupts */
	__raw_writel(__raw_readl(S3C64XX_EINT0PEND), S3C64XX_EINT0PEND);
}

static inline void s3c_pm_arch_stop_clocks(void)
{
}

static inline void s3c_pm_arch_show_resume_irqs(void)
{
}

/* make these defines, we currently do not have any need to change
 * the IRQ wake controls depending on the CPU we are running on */
#ifdef CONFIG_PM_SLEEP
#define s3c_irqwake_eintallow	((1 << 28) - 1)
#define s3c_irqwake_intallow	(~0)
#else
#define s3c_irqwake_eintallow 0
#define s3c_irqwake_intallow  0
#endif

static inline void s3c_pm_restored_gpios(void)
{
	/* ensure sleep mode has been cleared from the system */

	__raw_writel(0, S3C64XX_SLPEN);
}

static inline void samsung_pm_saved_gpios(void)
{
	/* turn on the sleep mode and keep it there, as it seems that during
	 * suspend the xCON registers get re-set and thus you can end up with
	 * problems between going to sleep and resuming.
	 */

	__raw_writel(S3C64XX_SLPEN_USE_xSLP, S3C64XX_SLPEN);
}
#endif /* __MACH_S3C64XX_PM_CORE_H */

Annotation

Implementation Notes