diff options
Diffstat (limited to 'arch/arm/plat-s3c64xx/pm.c')
| -rw-r--r-- | arch/arm/plat-s3c64xx/pm.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/arch/arm/plat-s3c64xx/pm.c b/arch/arm/plat-s3c64xx/pm.c deleted file mode 100644 index b8ac4597fad..00000000000 --- a/arch/arm/plat-s3c64xx/pm.c +++ /dev/null @@ -1,173 +0,0 @@ -/* linux/arch/arm/plat-s3c64xx/pm.c - * - * Copyright 2008 Openmoko, Inc. - * Copyright 2008 Simtec Electronics - * Ben Dooks <ben@simtec.co.uk> - * http://armlinux.simtec.co.uk/ - * - * S3C64XX CPU PM support. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. -*/ - -#include <linux/init.h> -#include <linux/suspend.h> -#include <linux/serial_core.h> -#include <linux/io.h> - -#include <mach/map.h> - -#include <plat/pm.h> -#include <mach/regs-sys.h> -#include <mach/regs-gpio.h> -#include <mach/regs-clock.h> -#include <mach/regs-syscon-power.h> -#include <mach/regs-gpio-memport.h> - -#ifdef CONFIG_S3C_PM_DEBUG_LED_SMDK -#include <mach/gpio-bank-n.h> - -void s3c_pm_debug_smdkled(u32 set, u32 clear) -{ - unsigned long flags; - u32 reg; - - local_irq_save(flags); - reg = __raw_readl(S3C64XX_GPNCON); - reg &= ~(S3C64XX_GPN_CONMASK(12) | S3C64XX_GPN_CONMASK(13) | - S3C64XX_GPN_CONMASK(14) | S3C64XX_GPN_CONMASK(15)); - reg |= S3C64XX_GPN_OUTPUT(12) | S3C64XX_GPN_OUTPUT(13) | - S3C64XX_GPN_OUTPUT(14) | S3C64XX_GPN_OUTPUT(15); - __raw_writel(reg, S3C64XX_GPNCON); - - reg = __raw_readl(S3C64XX_GPNDAT); - reg &= ~(clear << 12); - reg |= set << 12; - __raw_writel(reg, S3C64XX_GPNDAT); - - local_irq_restore(flags); -} -#endif - -static struct sleep_save core_save[] = { - SAVE_ITEM(S3C_APLL_LOCK), - SAVE_ITEM(S3C_MPLL_LOCK), - SAVE_ITEM(S3C_EPLL_LOCK), - SAVE_ITEM(S3C_CLK_SRC), - SAVE_ITEM(S3C_CLK_DIV0), - SAVE_ITEM(S3C_CLK_DIV1), - SAVE_ITEM(S3C_CLK_DIV2), - SAVE_ITEM(S3C_CLK_OUT), - SAVE_ITEM(S3C_HCLK_GATE), - SAVE_ITEM(S3C_PCLK_GATE), - SAVE_ITEM(S3C_SCLK_GATE), - SAVE_ITEM(S3C_MEM0_GATE), - - SAVE_ITEM(S3C_EPLL_CON1), - SAVE_ITEM(S3C_EPLL_CON0), - - SAVE_ITEM(S3C64XX_MEM0DRVCON), - SAVE_ITEM(S3C64XX_MEM1DRVCON), - -#ifndef CONFIG_CPU_FREQ - SAVE_ITEM(S3C_APLL_CON), - SAVE_ITEM(S3C_MPLL_CON), -#endif -}; - -static struct sleep_save misc_save[] = { - SAVE_ITEM(S3C64XX_AHB_CON0), - SAVE_ITEM(S3C64XX_AHB_CON1), - SAVE_ITEM(S3C64XX_AHB_CON2), - - SAVE_ITEM(S3C64XX_SPCON), - - SAVE_ITEM(S3C64XX_MEM0CONSTOP), - SAVE_ITEM(S3C64XX_MEM1CONSTOP), - SAVE_ITEM(S3C64XX_MEM0CONSLP0), - SAVE_ITEM(S3C64XX_MEM0CONSLP1), - SAVE_ITEM(S3C64XX_MEM1CONSLP), -}; - -void s3c_pm_configure_extint(void) -{ - __raw_writel(s3c_irqwake_eintmask, S3C64XX_EINT_MASK); -} - -void s3c_pm_restore_core(void) -{ - __raw_writel(0, S3C64XX_EINT_MASK); - - s3c_pm_debug_smdkled(1 << 2, 0); - - s3c_pm_do_restore_core(core_save, ARRAY_SIZE(core_save)); - s3c_pm_do_restore(misc_save, ARRAY_SIZE(misc_save)); -} - -void s3c_pm_save_core(void) -{ - s3c_pm_do_save(misc_save, ARRAY_SIZE(misc_save)); - s3c_pm_do_save(core_save, ARRAY_SIZE(core_save)); -} - -/* since both s3c6400 and s3c6410 share the same sleep pm calls, we - * put the per-cpu code in here until any new cpu comes along and changes - * this. - */ - -static void s3c64xx_cpu_suspend(void) -{ - unsigned long tmp; - - /* set our standby method to sleep */ - - tmp = __raw_readl(S3C64XX_PWR_CFG); - tmp &= ~S3C64XX_PWRCFG_CFG_WFI_MASK; - tmp |= S3C64XX_PWRCFG_CFG_WFI_SLEEP; - __raw_writel(tmp, S3C64XX_PWR_CFG); - - /* clear any old wakeup */ - - __raw_writel(__raw_readl(S3C64XX_WAKEUP_STAT), - S3C64XX_WAKEUP_STAT); - - /* set the LED state to 0110 over sleep */ - s3c_pm_debug_smdkled(3 << 1, 0xf); - - /* issue the standby signal into the pm unit. Note, we - * issue a write-buffer drain just in case */ - - tmp = 0; - - asm("b 1f\n\t" - ".align 5\n\t" - "1:\n\t" - "mcr p15, 0, %0, c7, c10, 5\n\t" - "mcr p15, 0, %0, c7, c10, 4\n\t" - "mcr p15, 0, %0, c7, c0, 4" :: "r" (tmp)); - - /* we should never get past here */ - - panic("sleep resumed to originator?"); -} - -static void s3c64xx_pm_prepare(void) -{ - /* store address of resume. */ - __raw_writel(virt_to_phys(s3c_cpu_resume), S3C64XX_INFORM0); - - /* ensure previous wakeup state is cleared before sleeping */ - __raw_writel(__raw_readl(S3C64XX_WAKEUP_STAT), S3C64XX_WAKEUP_STAT); -} - -static int s3c64xx_pm_init(void) -{ - pm_cpu_prep = s3c64xx_pm_prepare; - pm_cpu_sleep = s3c64xx_cpu_suspend; - pm_uart_udivslot = 1; - return 0; -} - -arch_initcall(s3c64xx_pm_init); |