/* SPDX-License-Identifier: GPL-2.0 */
|
/*
|
* Copyright 2008 Simtec Electronics
|
* Ben Dooks <ben@simtec.co.uk>
|
* http://armlinux.simtec.co.uk/
|
*
|
* S3C24xx - PM core support for arch/arm/plat-s3c/pm.c
|
*/
|
|
#include <linux/delay.h>
|
#include <linux/io.h>
|
|
#include "regs-clock.h"
|
#include "regs-irq-s3c24xx.h"
|
#include <mach/irqs.h>
|
|
static inline void s3c_pm_debug_init_uart(void)
|
{
|
#ifdef CONFIG_SAMSUNG_PM_DEBUG
|
unsigned long tmp = __raw_readl(S3C2410_CLKCON);
|
|
/* re-start uart clocks */
|
tmp |= S3C2410_CLKCON_UART0;
|
tmp |= S3C2410_CLKCON_UART1;
|
tmp |= S3C2410_CLKCON_UART2;
|
|
__raw_writel(tmp, S3C2410_CLKCON);
|
udelay(10);
|
#endif
|
}
|
|
static inline void s3c_pm_arch_prepare_irqs(void)
|
{
|
__raw_writel(s3c_irqwake_intmask, S3C2410_INTMSK);
|
__raw_writel(s3c_irqwake_eintmask, S3C2410_EINTMASK);
|
|
/* ack any outstanding external interrupts before we go to sleep */
|
|
__raw_writel(__raw_readl(S3C2410_EINTPEND), S3C2410_EINTPEND);
|
__raw_writel(__raw_readl(S3C2410_INTPND), S3C2410_INTPND);
|
__raw_writel(__raw_readl(S3C2410_SRCPND), S3C2410_SRCPND);
|
|
}
|
|
static inline void s3c_pm_arch_stop_clocks(void)
|
{
|
__raw_writel(0x00, S3C2410_CLKCON); /* turn off clocks over sleep */
|
}
|
|
/* s3c2410_pm_show_resume_irqs
|
*
|
* print any IRQs asserted at resume time (ie, we woke from)
|
*/
|
static inline void s3c_pm_show_resume_irqs(int start, unsigned long which,
|
unsigned long mask)
|
{
|
int i;
|
|
which &= ~mask;
|
|
for (i = 0; i <= 31; i++) {
|
if (which & (1L<<i)) {
|
S3C_PMDBG("IRQ %d asserted at resume\n", start+i);
|
}
|
}
|
}
|
|
static inline void s3c_pm_arch_show_resume_irqs(void)
|
{
|
S3C_PMDBG("post sleep: IRQs 0x%08x, 0x%08x\n",
|
__raw_readl(S3C2410_SRCPND),
|
__raw_readl(S3C2410_EINTPEND));
|
|
s3c_pm_show_resume_irqs(IRQ_EINT0, __raw_readl(S3C2410_SRCPND),
|
s3c_irqwake_intmask);
|
|
s3c_pm_show_resume_irqs(IRQ_EINT4-4, __raw_readl(S3C2410_EINTPEND),
|
s3c_irqwake_eintmask);
|
}
|
|
static inline void s3c_pm_restored_gpios(void) { }
|
static inline void samsung_pm_saved_gpios(void) { }
|
|
/* state for IRQs over sleep */
|
|
/* default is to allow for EINT0..EINT15, and IRQ_RTC as wakeup sources
|
*
|
* set bit to 1 in allow bitfield to enable the wakeup settings on it
|
*/
|
#ifdef CONFIG_PM_SLEEP
|
#define s3c_irqwake_intallow (1L << 30 | 0xfL)
|
#define s3c_irqwake_eintallow (0x0000fff0L)
|
#else
|
#define s3c_irqwake_eintallow 0
|
#define s3c_irqwake_intallow 0
|
#endif
|
