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
  25 #if defined(CONFIG_PM_OPP)
  26 extern int omap3_opp_init(void);
  27 extern int omap4_opp_init(void);
  28 #else
  29 static inline int omap3_opp_init(void)
  30 {
  31         return -EINVAL;
  32 }
  33 static 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  */
  45 struct 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)
  52 extern void omap3_pm_init_cpuidle(struct cpuidle_params *cpuidle_board_params);
  53 #else
  54 static
  55 inline void omap3_pm_init_cpuidle(struct cpuidle_params *cpuidle_board_params)
  56 {
  57 }
  58 #endif
  59
  60 extern int omap3_pm_get_suspend_state(struct powerdomain *pwrdm);
  61 extern int omap3_pm_set_suspend_state(struct powerdomain *pwrdm, int state);
  62
  63 #ifdef CONFIG_PM_DEBUG
  64 extern u32 enable_off_mode;
  65 #else
  66 #define enable_off_mode 0
  67 #endif
  68
  69 #if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
  70 extern void pm_dbg_update_time(struct powerdomain *pwrdm, int prev);
  71 #else
  72 #define pm_dbg_update_time(pwrdm, prev) do {} while (0);
  73 #endif /* CONFIG_PM_DEBUG */
  74
  75 /* 24xx */
  76 extern void omap24xx_idle_loop_suspend(void);
  77 extern unsigned int omap24xx_idle_loop_suspend_sz;
  78
  79 extern void omap24xx_cpu_suspend(u32 dll_ctrl, void __iomem *sdrc_dlla_ctrl,
  80                                         void __iomem *sdrc_power);
  81 extern unsigned int omap24xx_cpu_suspend_sz;
  82
  83 /* 3xxx */
  84 extern void omap34xx_cpu_suspend(int save_state);
  85
  86 /* omap3_do_wfi function pointer and size, for copy to SRAM */
  87 extern void omap3_do_wfi(void);
  88 extern unsigned int omap3_do_wfi_sz;
  89 /* ... and its pointer from SRAM after copy */
  90 extern void (*omap3_do_wfi_sram)(void);
  91
  92 /* save_secure_ram_context function pointer and size, for copy to SRAM */
  93 extern int save_secure_ram_context(u32 *addr);
  94 extern unsigned int save_secure_ram_context_sz;
  95
  96 extern void omap3_save_scratchpad_contents(void);
  97
  98 #define PM_RTA_ERRATUM_i608             (1 << 0)
  99 #define PM_SDRC_WAKEUP_ERRATUM_i583     (1 << 1)
 100
 101 #if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3)
 102 extern u16 pm34xx_errata;
 103 #define IS_PM34XX_ERRATUM(id)           (pm34xx_errata & (id))
 104 extern void enable_omap3630_toggle_l2_on_restore(void);
 105 #else
 106 #define IS_PM34XX_ERRATUM(id)           0
 107 static inline void enable_omap3630_toggle_l2_on_restore(void) { }
 108 #endif          /* defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3) */
 109
 110 #ifdef CONFIG_OMAP_SMARTREFLEX
 111 extern int omap_devinit_smartreflex(void);
 112 extern void omap_enable_smartreflex_on_init(void);
 113 #else
 114 static inline int omap_devinit_smartreflex(void)
 115 {
 116         return -EINVAL;
 117 }
 118
 119 static inline void omap_enable_smartreflex_on_init(void) {}
 120 #endif
 121
 122 #ifdef CONFIG_TWL4030_CORE
 123 extern int omap3_twl_init(void);
 124 extern int omap4_twl_init(void);
 125 extern int omap3_twl_set_sr_bit(bool enable);
 126 #else
 127 static inline int omap3_twl_init(void)
 128 {
 129         return -EINVAL;
 130 }
 131 static inline int omap4_twl_init(void)
 132 {
 133         return -EINVAL;
 134 }
 135 #endif
 136
 137 #endif