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112 lines
2.1 KiB
C
112 lines
2.1 KiB
C
/*
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* linux/arch/arm/mach-omap2/pm.c
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*
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* OMAP2 Power Management Routines
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*
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* Copyright (C) 2006 Nokia Corporation
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* Tony Lindgren <tony@atomide.com>
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*
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* Copyright (C) 2005 Texas Instruments, Inc.
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* Richard Woodruff <r-woodruff2@ti.com>
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*
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* Based on pm.c for omap1
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/suspend.h>
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#include <linux/sched.h>
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#include <linux/proc_fs.h>
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#include <linux/interrupt.h>
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#include <linux/sysfs.h>
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/clk.h>
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#include <linux/io.h>
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#include <asm/irq.h>
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#include <asm/atomic.h>
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#include <asm/mach/time.h>
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#include <asm/mach/irq.h>
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#include <mach/irqs.h>
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#include <mach/clock.h>
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#include <mach/sram.h>
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#include <mach/pm.h>
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static struct clk *vclk;
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static void (*omap2_sram_idle)(void);
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static void (*omap2_sram_suspend)(int dllctrl, int cpu_rev);
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static void (*saved_idle)(void);
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extern void __init pmdomain_init(void);
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extern void pmdomain_set_autoidle(void);
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static unsigned int omap24xx_sleep_save[OMAP24XX_SLEEP_SAVE_SIZE];
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void omap2_pm_idle(void)
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{
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local_irq_disable();
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local_fiq_disable();
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if (need_resched()) {
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local_fiq_enable();
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local_irq_enable();
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return;
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}
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omap2_sram_idle();
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local_fiq_enable();
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local_irq_enable();
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}
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static int omap2_pm_prepare(void)
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{
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/* We cannot sleep in idle until we have resumed */
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saved_idle = pm_idle;
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pm_idle = NULL;
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return 0;
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}
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static int omap2_pm_suspend(void)
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{
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return 0;
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}
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static int omap2_pm_enter(suspend_state_t state)
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{
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int ret = 0;
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switch (state)
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{
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case PM_SUSPEND_STANDBY:
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case PM_SUSPEND_MEM:
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ret = omap2_pm_suspend();
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break;
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default:
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ret = -EINVAL;
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}
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return ret;
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}
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static void omap2_pm_finish(void)
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{
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pm_idle = saved_idle;
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}
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static struct platform_suspend_ops omap_pm_ops = {
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.prepare = omap2_pm_prepare,
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.enter = omap2_pm_enter,
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.finish = omap2_pm_finish,
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.valid = suspend_valid_only_mem,
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};
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int __init omap2_pm_init(void)
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{
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return 0;
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}
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__initcall(omap2_pm_init);
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