arch/arm/mach-s3c2410/include/mach/pm-core.h

   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
  14 static inline void s3c_pm_debug_init_uart(void)
  15 {
  16         unsigned long tmp = __raw_readl(S3C2410_CLKCON);
  17
  18         /* re-start uart clocks */
  19         tmp |= S3C2410_CLKCON_UART0;
  20         tmp |= S3C2410_CLKCON_UART1;
  21         tmp |= S3C2410_CLKCON_UART2;
  22
  23         __raw_writel(tmp, S3C2410_CLKCON);
  24         udelay(10);
  25 }
  26
  27 static inline void s3c_pm_arch_prepare_irqs(void)
  28 {
  29         __raw_writel(s3c_irqwake_intmask, S3C2410_INTMSK);
  30         __raw_writel(s3c_irqwake_eintmask, S3C2410_EINTMASK);
  31
  32         /* ack any outstanding external interrupts before we go to sleep */
  33
  34         __raw_writel(__raw_readl(S3C2410_EINTPEND), S3C2410_EINTPEND);
  35         __raw_writel(__raw_readl(S3C2410_INTPND), S3C2410_INTPND);
  36         __raw_writel(__raw_readl(S3C2410_SRCPND), S3C2410_SRCPND);
  37
  38 }
  39
  40 static inline void s3c_pm_arch_stop_clocks(void)
  41 {
  42         __raw_writel(0x00, S3C2410_CLKCON);  /* turn off clocks over sleep */
  43 }
  44
  45 static void s3c_pm_show_resume_irqs(int start, unsigned long which,
  46                                     unsigned long mask);
  47
  48 static inline void s3c_pm_arch_show_resume_irqs(void)
  49 {
  50         S3C_PMDBG("post sleep: IRQs 0x%08x, 0x%08x\n",
  51                   __raw_readl(S3C2410_SRCPND),
  52                   __raw_readl(S3C2410_EINTPEND));
  53
  54         s3c_pm_show_resume_irqs(IRQ_EINT0, __raw_readl(S3C2410_SRCPND),
  55                                 s3c_irqwake_intmask);
  56
  57         s3c_pm_show_resume_irqs(IRQ_EINT4-4, __raw_readl(S3C2410_EINTPEND),
  58                                 s3c_irqwake_eintmask);
  59 }
  60
  61 static inline void s3c_pm_arch_update_uart(void __iomem *regs,
  62                                            struct pm_uart_save *save)
  63 {
  64 }
  65
  66 static inline void s3c_pm_restored_gpios(void) { }
  67 static inline void s3c_pm_saved_gpios(void) { }