LXR linux/arch/arm/mach-omap2/pm.h

   1/*
   2 * OMAP2/3 Power Management Routines
   3 *
   4 * Copyright (C) 2008 Nokia Corporation
   5 * Jouni Hogander
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10 */
  11#ifndef __ARCH_ARM_MACH_OMAP2_PM_H
  12#define __ARCH_ARM_MACH_OMAP2_PM_H
  13
  14#include <linux/err.h>
  15
  16#include "powerdomain.h"
  17
  18extern void *omap3_secure_ram_storage;
  19extern void omap3_pm_off_mode_enable(int);
  20extern void omap_sram_idle(void);
  21extern int omap3_can_sleep(void);
  22extern int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state);
  23extern int omap3_idle_init(void);
  24
  25#if defined(CONFIG_PM_OPP)
  26extern int omap3_opp_init(void);
  27extern int omap4_opp_init(void);
  28#else
  29static inline int omap3_opp_init(void)
  30{
  31        return -EINVAL;
  32}
  33static inline int omap4_opp_init(void)
  34{
  35        return -EINVAL;
  36}
  37#endif
  38
  39/*
  40 * cpuidle mach specific parameters
  41 *
  42 * The board code can override the default C-states definition using
  43 * omap3_pm_init_cpuidle
  44 */
  45struct cpuidle_params {
  46        u32 exit_latency;       /* exit_latency = sleep + wake-up latencies */
  47        u32 target_residency;
  48        u8 valid;               /* validates the C-state */
  49};
  50
  51#if defined(CONFIG_PM) && defined(CONFIG_CPU_IDLE)
  52extern void omap3_pm_init_cpuidle(struct cpuidle_params *cpuidle_board_params);
  53#else
  54static
  55inline void omap3_pm_init_cpuidle(struct cpuidle_params *cpuidle_board_params)
  56{
  57}
  58#endif
  59
  60extern int omap3_pm_get_suspend_state(struct powerdomain *pwrdm);
  61extern int omap3_pm_set_suspend_state(struct powerdomain *pwrdm, int state);
  62
  63extern u32 wakeup_timer_seconds;
  64extern u32 wakeup_timer_milliseconds;
  65extern struct omap_dm_timer *gptimer_wakeup;
  66
  67#ifdef CONFIG_PM_DEBUG
  68extern void omap2_pm_dump(int mode, int resume, unsigned int us);
  69extern void omap2_pm_wakeup_on_timer(u32 seconds, u32 milliseconds);
  70extern int omap2_pm_debug;
  71extern u32 enable_off_mode;
  72extern u32 sleep_while_idle;
  73#else
  74#define omap2_pm_dump(mode, resume, us)         do {} while (0);
  75#define omap2_pm_wakeup_on_timer(seconds, milliseconds) do {} while (0);
  76#define omap2_pm_debug                          0
  77#define enable_off_mode 0
  78#define sleep_while_idle 0
  79#endif
  80
  81#if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
  82extern void pm_dbg_update_time(struct powerdomain *pwrdm, int prev);
  83extern int pm_dbg_regset_save(int reg_set);
  84extern int pm_dbg_regset_init(int reg_set);
  85#else
  86#define pm_dbg_update_time(pwrdm, prev) do {} while (0);
  87#define pm_dbg_regset_save(reg_set) do {} while (0);
  88#define pm_dbg_regset_init(reg_set) do {} while (0);
  89#endif /* CONFIG_PM_DEBUG */
  90
  91extern void omap24xx_idle_loop_suspend(void);
  92
  93extern void omap24xx_cpu_suspend(u32 dll_ctrl, void __iomem *sdrc_dlla_ctrl,
  94                                        void __iomem *sdrc_power);
  95extern void omap34xx_cpu_suspend(u32 *addr, int save_state);
  96extern int save_secure_ram_context(u32 *addr);
  97extern void omap3_save_scratchpad_contents(void);
  98
  99extern unsigned int omap24xx_idle_loop_suspend_sz;
 100extern unsigned int save_secure_ram_context_sz;
 101extern unsigned int omap24xx_cpu_suspend_sz;
 102extern unsigned int omap34xx_cpu_suspend_sz;
 103
 104#define PM_RTA_ERRATUM_i608             (1 << 0)
 105#define PM_SDRC_WAKEUP_ERRATUM_i583     (1 << 1)
 106
 107#if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3)
 108extern u16 pm34xx_errata;
 109#define IS_PM34XX_ERRATUM(id)           (pm34xx_errata & (id))
 110extern void enable_omap3630_toggle_l2_on_restore(void);
 111#else
 112#define IS_PM34XX_ERRATUM(id)           0
 113static inline void enable_omap3630_toggle_l2_on_restore(void) { }
 114#endif          /* defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3) */
 115
 116#ifdef CONFIG_OMAP_SMARTREFLEX
 117extern int omap_devinit_smartreflex(void);
 118extern void omap_enable_smartreflex_on_init(void);
 119#else
 120static inline int omap_devinit_smartreflex(void)
 121{
 122        return -EINVAL;
 123}
 124
 125static inline void omap_enable_smartreflex_on_init(void) {}
 126#endif
 127
 128#ifdef CONFIG_TWL4030_CORE
 129extern int omap3_twl_init(void);
 130extern int omap4_twl_init(void);
 131extern int omap3_twl_set_sr_bit(bool enable);
 132#else
 133static inline int omap3_twl_init(void)
 134{
 135        return -EINVAL;
 136}
 137static inline int omap4_twl_init(void)
 138{
 139        return -EINVAL;
 140}
 141#endif
 142
 143#endif
 144