diff options
Diffstat (limited to '')
| -rw-r--r-- | arch/arm/plat-samsung/pm.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/arch/arm/plat-samsung/pm.c b/arch/arm/plat-samsung/pm.c deleted file mode 100644 index d6bfd66592b0..000000000000 --- a/arch/arm/plat-samsung/pm.c +++ /dev/null @@ -1,199 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -// -// Copyright 2008 Openmoko, Inc. -// Copyright 2004-2008 Simtec Electronics -// Ben Dooks <ben@simtec.co.uk> -// http://armlinux.simtec.co.uk/ -// -// S3C common power management (suspend to ram) support. - -#include <linux/init.h> -#include <linux/suspend.h> -#include <linux/errno.h> -#include <linux/delay.h> -#include <linux/of.h> -#include <linux/serial_s3c.h> -#include <linux/io.h> - -#include <asm/cacheflush.h> -#include <asm/suspend.h> - -#include <mach/map.h> -#include <mach/regs-clock.h> -#include <mach/regs-irq.h> -#include <mach/irqs.h> - -#include <asm/irq.h> - -#include <plat/pm.h> -#include <mach/pm-core.h> - -/* for external use */ - -unsigned long s3c_pm_flags; - -/* The IRQ ext-int code goes here, it is too small to currently bother - * with its own file. */ - -unsigned long s3c_irqwake_intmask = 0xffffffffL; -unsigned long s3c_irqwake_eintmask = 0xffffffffL; - -int s3c_irqext_wake(struct irq_data *data, unsigned int state) -{ - unsigned long bit = 1L << IRQ_EINT_BIT(data->irq); - - if (!(s3c_irqwake_eintallow & bit)) - return -ENOENT; - - printk(KERN_INFO "wake %s for irq %d\n", - state ? "enabled" : "disabled", data->irq); - - if (!state) - s3c_irqwake_eintmask |= bit; - else - s3c_irqwake_eintmask &= ~bit; - - return 0; -} - -void (*pm_cpu_prep)(void); -int (*pm_cpu_sleep)(unsigned long); - -#define any_allowed(mask, allow) (((mask) & (allow)) != (allow)) - -/* s3c_pm_enter - * - * central control for sleep/resume process -*/ - -static int s3c_pm_enter(suspend_state_t state) -{ - int ret; - /* ensure the debug is initialised (if enabled) */ - - s3c_pm_debug_init(); - - S3C_PMDBG("%s(%d)\n", __func__, state); - - if (pm_cpu_prep == NULL || pm_cpu_sleep == NULL) { - printk(KERN_ERR "%s: error: no cpu sleep function\n", __func__); - return -EINVAL; - } - - /* check if we have anything to wake-up with... bad things seem - * to happen if you suspend with no wakeup (system will often - * require a full power-cycle) - */ - - if (!of_have_populated_dt() && - !any_allowed(s3c_irqwake_intmask, s3c_irqwake_intallow) && - !any_allowed(s3c_irqwake_eintmask, s3c_irqwake_eintallow)) { - printk(KERN_ERR "%s: No wake-up sources!\n", __func__); - printk(KERN_ERR "%s: Aborting sleep\n", __func__); - return -EINVAL; - } - - /* save all necessary core registers not covered by the drivers */ - - if (!of_have_populated_dt()) { - samsung_pm_save_gpios(); - samsung_pm_saved_gpios(); - } - - s3c_pm_save_uarts(); - s3c_pm_save_core(); - - /* set the irq configuration for wake */ - - s3c_pm_configure_extint(); - - S3C_PMDBG("sleep: irq wakeup masks: %08lx,%08lx\n", - s3c_irqwake_intmask, s3c_irqwake_eintmask); - - s3c_pm_arch_prepare_irqs(); - - /* call cpu specific preparation */ - - pm_cpu_prep(); - - /* flush cache back to ram */ - - flush_cache_all(); - - s3c_pm_check_store(); - - /* send the cpu to sleep... */ - - s3c_pm_arch_stop_clocks(); - - /* this will also act as our return point from when - * we resume as it saves its own register state and restores it - * during the resume. */ - - ret = cpu_suspend(0, pm_cpu_sleep); - if (ret) - return ret; - - /* restore the system state */ - - s3c_pm_restore_core(); - s3c_pm_restore_uarts(); - - if (!of_have_populated_dt()) { - samsung_pm_restore_gpios(); - s3c_pm_restored_gpios(); - } - - s3c_pm_debug_init(); - - /* check what irq (if any) restored the system */ - - s3c_pm_arch_show_resume_irqs(); - - S3C_PMDBG("%s: post sleep, preparing to return\n", __func__); - - /* LEDs should now be 1110 */ - s3c_pm_debug_smdkled(1 << 1, 0); - - s3c_pm_check_restore(); - - /* ok, let's return from sleep */ - - S3C_PMDBG("S3C PM Resume (post-restore)\n"); - return 0; -} - -static int s3c_pm_prepare(void) -{ - /* prepare check area if configured */ - - s3c_pm_check_prepare(); - return 0; -} - -static void s3c_pm_finish(void) -{ - s3c_pm_check_cleanup(); -} - -static const struct platform_suspend_ops s3c_pm_ops = { - .enter = s3c_pm_enter, - .prepare = s3c_pm_prepare, - .finish = s3c_pm_finish, - .valid = suspend_valid_only_mem, -}; - -/* s3c_pm_init - * - * Attach the power management functions. This should be called - * from the board specific initialisation if the board supports - * it. -*/ - -int __init s3c_pm_init(void) -{ - printk("S3C Power Management, Copyright 2004 Simtec Electronics\n"); - - suspend_set_ops(&s3c_pm_ops); - return 0; -} |