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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright 2008 Openmoko, Inc.
* Copyright 2008 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
* http://armlinux.simtec.co.uk/
*
* S3C64XX - PM core support for arch/arm/plat-s3c/pm.c
*/
#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)
{
#ifdef CONFIG_SAMSUNG_PM_DEBUG
u32 tmp = __raw_readl(S3C_PCLK_GATE);
/* As a note, since the S3C64XX UARTs generally have multiple
* clock sources, we simply enable PCLK at the moment and hope
* that the resume settings for the UART are suitable for the
* use with PCLK.
*/
tmp |= S3C_CLKCON_PCLK_UART0;
tmp |= S3C_CLKCON_PCLK_UART1;
tmp |= S3C_CLKCON_PCLK_UART2;
tmp |= S3C_CLKCON_PCLK_UART3;
__raw_writel(tmp, S3C_PCLK_GATE);
udelay(10);
#endif
}
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 */
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