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 extern void *omap3_secure_ram_storage;
  19 extern void omap3_pm_off_mode_enable(int);
  20 extern void omap_sram_idle(void);
  21 extern int omap3_can_sleep(void);
  22 extern int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state);
  23 extern int omap3_idle_init(void);
  24 extern int omap4_idle_init(void);
  25
  26 #if defined(CONFIG_PM_OPP)
  27 extern int omap3_opp_init(void);
  28 extern int omap4_opp_init(void);
  29 #else
  30 static inline int omap3_opp_init(void)
  31 {
  32         return -EINVAL;
  33 }
  34 static inline int omap4_opp_init(void)
  35 {
  36         return -EINVAL;
  37 }
  38 #endif
  39
  40 /*
  41  * cpuidle mach specific parameters
  42  *
  43  * The board code can override the default C-states definition using
  44  * omap3_pm_init_cpuidle
  45  */
  46 struct cpuidle_params {
  47         u32 exit_latency;       /* exit_latency = sleep + wake-up latencies */
  48         u32 target_residency;
  49         u8 valid;               /* validates the C-state */
  50 };
  51
  52 #if defined(CONFIG_PM) && defined(CONFIG_CPU_IDLE)
  53 extern void omap3_pm_init_cpuidle(struct cpuidle_params *cpuidle_board_params);
  54 #else
  55 static
  56 inline void omap3_pm_init_cpuidle(struct cpuidle_params *cpuidle_board_params)
  57 {
  58 }
  59 #endif
  60
  61 extern int omap3_pm_get_suspend_state(struct powerdomain *pwrdm);
  62 extern int omap3_pm_set_suspend_state(struct powerdomain *pwrdm, int state);
  63
  64 #ifdef CONFIG_PM_DEBUG
  65 extern u32 enable_off_mode;
  66 #else
  67 #define enable_off_mode 0
  68 #endif
  69
  70 #if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
  71 extern void pm_dbg_update_time(struct powerdomain *pwrdm, int prev);
  72 #else
  73 #define pm_dbg_update_time(pwrdm, prev) do {} while (0);
  74 #endif /* CONFIG_PM_DEBUG */
  75
  76 /* 24xx */
  77 extern void omap24xx_idle_loop_suspend(void);
  78 extern unsigned int omap24xx_idle_loop_suspend_sz;
  79
  80 extern void omap24xx_cpu_suspend(u32 dll_ctrl, void __iomem *sdrc_dlla_ctrl,
  81                                         void __iomem *sdrc_power);
  82 extern unsigned int omap24xx_cpu_suspend_sz;
  83
  84 /* 3xxx */
  85 extern void omap34xx_cpu_suspend(int save_state);
  86
  87 /* omap3_do_wfi function pointer and size, for copy to SRAM */
  88 extern void omap3_do_wfi(void);
  89 extern unsigned int omap3_do_wfi_sz;
  90 /* ... and its pointer from SRAM after copy */
  91 extern void (*omap3_do_wfi_sram)(void);
  92
  93 /* save_secure_ram_context function pointer and size, for copy to SRAM */
  94 extern int save_secure_ram_context(u32 *addr);
  95 extern unsigned int save_secure_ram_context_sz;
  96
  97 extern void omap3_save_scratchpad_contents(void);
  98
  99 #define PM_RTA_ERRATUM_i608             (1 << 0)
 100 #define PM_SDRC_WAKEUP_ERRATUM_i583     (1 << 1)
 101
 102 #if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3)
 103 extern u16 pm34xx_errata;
 104 #define IS_PM34XX_ERRATUM(id)           (pm34xx_errata & (id))
 105 extern void enable_omap3630_toggle_l2_on_restore(void);
 106 #else
 107 #define IS_PM34XX_ERRATUM(id)           0
 108 static inline void enable_omap3630_toggle_l2_on_restore(void) { }
 109 #endif          /* defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3) */
 110
 111 #ifdef CONFIG_OMAP_SMARTREFLEX
 112 extern int omap_devinit_smartreflex(void);
 113 extern void omap_enable_smartreflex_on_init(void);
 114 #else
 115 static inline int omap_devinit_smartreflex(void)
 116 {
 117         return -EINVAL;
 118 }
 119
 120 static inline void omap_enable_smartreflex_on_init(void) {}
 121 #endif
 122
 123 #ifdef CONFIG_TWL4030_CORE
 124 extern int omap3_twl_init(void);
 125 extern int omap4_twl_init(void);
 126 extern int omap3_twl_set_sr_bit(bool enable);
 127 #else
 128 static inline int omap3_twl_init(void)
 129 {
 130         return -EINVAL;
 131 }
 132 static inline int omap4_twl_init(void)
 133 {
 134         return -EINVAL;
 135 }
 136 #endif
 137
 138 #endif