1/* linux/arch/arm/mach-s3c2410/include/pm-core.h 2 * 3 * Copyright 2008 Simtec Electronics 4 * Ben Dooks <ben@simtec.co.uk> 5 * http://armlinux.simtec.co.uk/ 6 * 7 * S3C24xx - PM core support for arch/arm/plat-s3c/pm.c 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. 12 */ 13#include <linux/delay.h> 14#include <linux/io.h> 15 16#include "regs-clock.h" 17#include "regs-irq.h" 18 19static inline void s3c_pm_debug_init_uart(void) 20{ 21 unsigned long tmp = __raw_readl(S3C2410_CLKCON); 22 23 /* re-start uart clocks */ 24 tmp |= S3C2410_CLKCON_UART0; 25 tmp |= S3C2410_CLKCON_UART1; 26 tmp |= S3C2410_CLKCON_UART2; 27 28 __raw_writel(tmp, S3C2410_CLKCON); 29 udelay(10); 30} 31 32static inline void s3c_pm_arch_prepare_irqs(void) 33{ 34 __raw_writel(s3c_irqwake_intmask, S3C2410_INTMSK); 35 __raw_writel(s3c_irqwake_eintmask, S3C2410_EINTMASK); 36 37 /* ack any outstanding external interrupts before we go to sleep */ 38 39 __raw_writel(__raw_readl(S3C2410_EINTPEND), S3C2410_EINTPEND); 40 __raw_writel(__raw_readl(S3C2410_INTPND), S3C2410_INTPND); 41 __raw_writel(__raw_readl(S3C2410_SRCPND), S3C2410_SRCPND); 42 43} 44 45static inline void s3c_pm_arch_stop_clocks(void) 46{ 47 __raw_writel(0x00, S3C2410_CLKCON); /* turn off clocks over sleep */ 48} 49 50/* s3c2410_pm_show_resume_irqs 51 * 52 * print any IRQs asserted at resume time (ie, we woke from) 53*/ 54static inline void s3c_pm_show_resume_irqs(int start, unsigned long which, 55 unsigned long mask) 56{ 57 int i; 58 59 which &= ~mask; 60 61 for (i = 0; i <= 31; i++) { 62 if (which & (1L<<i)) { 63 S3C_PMDBG("IRQ %d asserted at resume\n", start+i); 64 } 65 } 66} 67 68static inline void s3c_pm_arch_show_resume_irqs(void) 69{ 70 S3C_PMDBG("post sleep: IRQs 0x%08x, 0x%08x\n", 71 __raw_readl(S3C2410_SRCPND), 72 __raw_readl(S3C2410_EINTPEND)); 73 74 s3c_pm_show_resume_irqs(IRQ_EINT0, __raw_readl(S3C2410_SRCPND), 75 s3c_irqwake_intmask); 76 77 s3c_pm_show_resume_irqs(IRQ_EINT4-4, __raw_readl(S3C2410_EINTPEND), 78 s3c_irqwake_eintmask); 79} 80 81static inline void s3c_pm_arch_update_uart(void __iomem *regs, 82 struct pm_uart_save *save) 83{ 84} 85 86static inline void s3c_pm_restored_gpios(void) { } 87static inline void samsung_pm_saved_gpios(void) { } 88