diff options
Diffstat (limited to 'arch/arm/mach-s5p64x0/pm.c')
| -rw-r--r-- | arch/arm/mach-s5p64x0/pm.c | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/arch/arm/mach-s5p64x0/pm.c b/arch/arm/mach-s5p64x0/pm.c deleted file mode 100644 index ec8229cee716..000000000000 --- a/arch/arm/mach-s5p64x0/pm.c +++ /dev/null @@ -1,202 +0,0 @@ -/* linux/arch/arm/mach-s5p64x0/pm.c - * - * Copyright (c) 2011 Samsung Electronics Co., Ltd. - * http://www.samsung.com - * - * S5P64X0 Power Management Support - * - * Based on arch/arm/mach-s3c64xx/pm.c by Ben Dooks - * - * 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/suspend.h> -#include <linux/syscore_ops.h> -#include <linux/io.h> - -#include <plat/cpu.h> -#include <plat/pm.h> -#include <plat/wakeup-mask.h> - -#include <mach/regs-clock.h> -#include <mach/regs-gpio.h> - -static struct sleep_save s5p64x0_core_save[] = { - SAVE_ITEM(S5P64X0_APLL_CON), - SAVE_ITEM(S5P64X0_MPLL_CON), - SAVE_ITEM(S5P64X0_EPLL_CON), - SAVE_ITEM(S5P64X0_EPLL_CON_K), - SAVE_ITEM(S5P64X0_CLK_SRC0), - SAVE_ITEM(S5P64X0_CLK_SRC1), - SAVE_ITEM(S5P64X0_CLK_DIV0), - SAVE_ITEM(S5P64X0_CLK_DIV1), - SAVE_ITEM(S5P64X0_CLK_DIV2), - SAVE_ITEM(S5P64X0_CLK_DIV3), - SAVE_ITEM(S5P64X0_CLK_GATE_MEM0), - SAVE_ITEM(S5P64X0_CLK_GATE_HCLK1), - SAVE_ITEM(S5P64X0_CLK_GATE_SCLK1), -}; - -static struct sleep_save s5p64x0_misc_save[] = { - SAVE_ITEM(S5P64X0_AHB_CON0), - SAVE_ITEM(S5P64X0_SPCON0), - SAVE_ITEM(S5P64X0_SPCON1), - SAVE_ITEM(S5P64X0_MEM0CONSLP0), - SAVE_ITEM(S5P64X0_MEM0CONSLP1), - SAVE_ITEM(S5P64X0_MEM0DRVCON), - SAVE_ITEM(S5P64X0_MEM1DRVCON), -}; - -/* DPLL is present only in S5P6450 */ -static struct sleep_save s5p6450_core_save[] = { - SAVE_ITEM(S5P6450_DPLL_CON), - SAVE_ITEM(S5P6450_DPLL_CON_K), -}; - -void s3c_pm_configure_extint(void) -{ - __raw_writel(s3c_irqwake_eintmask, S5P64X0_EINT_WAKEUP_MASK); -} - -void s3c_pm_restore_core(void) -{ - __raw_writel(0, S5P64X0_EINT_WAKEUP_MASK); - - s3c_pm_do_restore_core(s5p64x0_core_save, - ARRAY_SIZE(s5p64x0_core_save)); - - if (soc_is_s5p6450()) - s3c_pm_do_restore_core(s5p6450_core_save, - ARRAY_SIZE(s5p6450_core_save)); - - s3c_pm_do_restore(s5p64x0_misc_save, ARRAY_SIZE(s5p64x0_misc_save)); -} - -void s3c_pm_save_core(void) -{ - s3c_pm_do_save(s5p64x0_misc_save, ARRAY_SIZE(s5p64x0_misc_save)); - - if (soc_is_s5p6450()) - s3c_pm_do_save(s5p6450_core_save, - ARRAY_SIZE(s5p6450_core_save)); - - s3c_pm_do_save(s5p64x0_core_save, ARRAY_SIZE(s5p64x0_core_save)); -} - -static int s5p64x0_cpu_suspend(unsigned long arg) -{ - unsigned long tmp = 0; - - /* - * Issue the standby signal into the pm unit. Note, we - * issue a write-buffer drain just in case. - */ - 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)); - - pr_info("Failed to suspend the system\n"); - return 1; /* Aborting suspend */ -} - -/* mapping of interrupts to parts of the wakeup mask */ -static struct samsung_wakeup_mask s5p64x0_wake_irqs[] = { - { .irq = IRQ_RTC_ALARM, .bit = S5P64X0_PWR_CFG_RTC_ALRM_DISABLE, }, - { .irq = IRQ_RTC_TIC, .bit = S5P64X0_PWR_CFG_RTC_TICK_DISABLE, }, - { .irq = IRQ_HSMMC0, .bit = S5P64X0_PWR_CFG_MMC0_DISABLE, }, - { .irq = IRQ_HSMMC1, .bit = S5P64X0_PWR_CFG_MMC1_DISABLE, }, -}; - -static void s5p64x0_pm_prepare(void) -{ - u32 tmp; - - samsung_sync_wakemask(S5P64X0_PWR_CFG, - s5p64x0_wake_irqs, ARRAY_SIZE(s5p64x0_wake_irqs)); - - /* store the resume address in INFORM0 register */ - __raw_writel(virt_to_phys(s3c_cpu_resume), S5P64X0_INFORM0); - - /* setup clock gating for FIMGVG block */ - __raw_writel((__raw_readl(S5P64X0_CLK_GATE_HCLK1) | \ - (S5P64X0_CLK_GATE_HCLK1_FIMGVG)), S5P64X0_CLK_GATE_HCLK1); - __raw_writel((__raw_readl(S5P64X0_CLK_GATE_SCLK1) | \ - (S5P64X0_CLK_GATE_SCLK1_FIMGVG)), S5P64X0_CLK_GATE_SCLK1); - - /* Configure the stabilization counter with wait time required */ - __raw_writel(S5P64X0_PWR_STABLE_PWR_CNT_VAL4, S5P64X0_PWR_STABLE); - - /* set WFI to SLEEP mode configuration */ - tmp = __raw_readl(S5P64X0_SLEEP_CFG); - tmp &= ~(S5P64X0_SLEEP_CFG_OSC_EN); - __raw_writel(tmp, S5P64X0_SLEEP_CFG); - - tmp = __raw_readl(S5P64X0_PWR_CFG); - tmp &= ~(S5P64X0_PWR_CFG_WFI_MASK); - tmp |= S5P64X0_PWR_CFG_WFI_SLEEP; - __raw_writel(tmp, S5P64X0_PWR_CFG); - - /* - * set OTHERS register to disable interrupt before going to - * sleep. This bit is present only in S5P6450, it is reserved - * in S5P6440. - */ - if (soc_is_s5p6450()) { - tmp = __raw_readl(S5P64X0_OTHERS); - tmp |= S5P6450_OTHERS_DISABLE_INT; - __raw_writel(tmp, S5P64X0_OTHERS); - } - - /* ensure previous wakeup state is cleared before sleeping */ - __raw_writel(__raw_readl(S5P64X0_WAKEUP_STAT), S5P64X0_WAKEUP_STAT); - -} - -static int s5p64x0_pm_add(struct device *dev, struct subsys_interface *sif) -{ - pm_cpu_prep = s5p64x0_pm_prepare; - pm_cpu_sleep = s5p64x0_cpu_suspend; - - return 0; -} - -static struct subsys_interface s5p64x0_pm_interface = { - .name = "s5p64x0_pm", - .subsys = &s5p64x0_subsys, - .add_dev = s5p64x0_pm_add, -}; - -static __init int s5p64x0_pm_drvinit(void) -{ - s3c_pm_init(); - - return subsys_interface_register(&s5p64x0_pm_interface); -} -arch_initcall(s5p64x0_pm_drvinit); - -static void s5p64x0_pm_resume(void) -{ - u32 tmp; - - tmp = __raw_readl(S5P64X0_OTHERS); - tmp |= (S5P64X0_OTHERS_RET_MMC0 | S5P64X0_OTHERS_RET_MMC1 | \ - S5P64X0_OTHERS_RET_UART); - __raw_writel(tmp , S5P64X0_OTHERS); -} - -static struct syscore_ops s5p64x0_pm_syscore_ops = { - .resume = s5p64x0_pm_resume, -}; - -static __init int s5p64x0_pm_syscore_init(void) -{ - register_syscore_ops(&s5p64x0_pm_syscore_ops); - - return 0; -} -arch_initcall(s5p64x0_pm_syscore_init); |