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
  18 #ifdef CONFIG_CPU_IDLE
  19 extern int __init omap3_idle_init(void);
  20 extern int __init omap4_idle_init(void);
  21 #else
  22 static inline int omap3_idle_init(void)
  23 {
  24         return 0;
  25 }
  26
  27 static inline int omap4_idle_init(void)
  28 {
  29         return 0;
  30 }
  31 #endif
  32
  33 extern void *omap3_secure_ram_storage;
  34 extern void omap3_pm_off_mode_enable(int);
  35 extern void omap_sram_idle(void);
  36 extern int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state);
  37 extern int omap_pm_clkdms_setup(struct clockdomain *clkdm, void *unused);
  38 extern int (*omap_pm_suspend)(void);
  39
  40 #if defined(CONFIG_PM_OPP)
  41 extern int omap3_opp_init(void);
  42 extern int omap4_opp_init(void);
  43 #else
  44 static inline int omap3_opp_init(void)
  45 {
  46         return -EINVAL;
  47 }
  48 static inline int omap4_opp_init(void)
  49 {
  50         return -EINVAL;
  51 }
  52 #endif
  53
  54 extern int omap3_pm_get_suspend_state(struct powerdomain *pwrdm);
  55 extern int omap3_pm_set_suspend_state(struct powerdomain *pwrdm, int state);
  56
  57 #ifdef CONFIG_PM_DEBUG
  58 extern u32 enable_off_mode;
  59 #else
  60 #define enable_off_mode 0
  61 #endif
  62
  63 #if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
  64 extern void pm_dbg_update_time(struct powerdomain *pwrdm, int prev);
  65 #else
  66 #define pm_dbg_update_time(pwrdm, prev) do {} while (0);
  67 #endif /* CONFIG_PM_DEBUG */
  68
  69 /* 24xx */
  70 extern void omap24xx_idle_loop_suspend(void);
  71 extern unsigned int omap24xx_idle_loop_suspend_sz;
  72
  73 extern void omap24xx_cpu_suspend(u32 dll_ctrl, void __iomem *sdrc_dlla_ctrl,
  74                                         void __iomem *sdrc_power);
  75 extern unsigned int omap24xx_cpu_suspend_sz;
  76
  77 /* 3xxx */
  78 extern void omap34xx_cpu_suspend(int save_state);
  79
  80 /* omap3_do_wfi function pointer and size, for copy to SRAM */
  81 extern void omap3_do_wfi(void);
  82 extern unsigned int omap3_do_wfi_sz;
  83 /* ... and its pointer from SRAM after copy */
  84 extern void (*omap3_do_wfi_sram)(void);
  85
  86 /* save_secure_ram_context function pointer and size, for copy to SRAM */
  87 extern int save_secure_ram_context(u32 *addr);
  88 extern unsigned int save_secure_ram_context_sz;
  89
  90 extern void omap3_save_scratchpad_contents(void);
  91
  92 #define PM_RTA_ERRATUM_i608             (1 << 0)
  93 #define PM_SDRC_WAKEUP_ERRATUM_i583     (1 << 1)
  94
  95 #if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3)
  96 extern u16 pm34xx_errata;
  97 #define IS_PM34XX_ERRATUM(id)           (pm34xx_errata & (id))
  98 extern void enable_omap3630_toggle_l2_on_restore(void);
  99 #else
 100 #define IS_PM34XX_ERRATUM(id)           0
 101 static inline void enable_omap3630_toggle_l2_on_restore(void) { }
 102 #endif          /* defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3) */
 103
 104 #ifdef CONFIG_POWER_AVS_OMAP
 105 extern int omap_devinit_smartreflex(void);
 106 extern void omap_enable_smartreflex_on_init(void);
 107 #else
 108 static inline int omap_devinit_smartreflex(void)
 109 {
 110         return -EINVAL;
 111 }
 112
 113 static inline void omap_enable_smartreflex_on_init(void) {}
 114 #endif
 115
 116 #ifdef CONFIG_TWL4030_CORE
 117 extern int omap3_twl_init(void);
 118 extern int omap4_twl_init(void);
 119 extern int omap3_twl_set_sr_bit(bool enable);
 120 #else
 121 static inline int omap3_twl_init(void)
 122 {
 123         return -EINVAL;
 124 }
 125 static inline int omap4_twl_init(void)
 126 {
 127         return -EINVAL;
 128 }
 129 #endif
 130
 131 #endif