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Linux/arch/arm/mach-omap2/pm.h

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  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_pm_clkdms_setup(struct clockdomain *clkdm, void *unused);
 37 
 38 #if defined(CONFIG_PM_OPP)
 39 extern int omap3_opp_init(void);
 40 extern int omap4_opp_init(void);
 41 #else
 42 static inline int omap3_opp_init(void)
 43 {
 44         return -EINVAL;
 45 }
 46 static inline int omap4_opp_init(void)
 47 {
 48         return -EINVAL;
 49 }
 50 #endif
 51 
 52 extern int omap3_pm_get_suspend_state(struct powerdomain *pwrdm);
 53 extern int omap3_pm_set_suspend_state(struct powerdomain *pwrdm, int state);
 54 
 55 #ifdef CONFIG_PM_DEBUG
 56 extern u32 enable_off_mode;
 57 #else
 58 #define enable_off_mode 0
 59 #endif
 60 
 61 #if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
 62 extern void pm_dbg_update_time(struct powerdomain *pwrdm, int prev);
 63 #else
 64 #define pm_dbg_update_time(pwrdm, prev) do {} while (0);
 65 #endif /* CONFIG_PM_DEBUG */
 66 
 67 /* 24xx */
 68 extern void omap24xx_idle_loop_suspend(void);
 69 extern unsigned int omap24xx_idle_loop_suspend_sz;
 70 
 71 extern void omap24xx_cpu_suspend(u32 dll_ctrl, void __iomem *sdrc_dlla_ctrl,
 72                                         void __iomem *sdrc_power);
 73 extern unsigned int omap24xx_cpu_suspend_sz;
 74 
 75 /* 3xxx */
 76 extern void omap34xx_cpu_suspend(int save_state);
 77 
 78 /* omap3_do_wfi function pointer and size, for copy to SRAM */
 79 extern void omap3_do_wfi(void);
 80 extern unsigned int omap3_do_wfi_sz;
 81 /* ... and its pointer from SRAM after copy */
 82 extern void (*omap3_do_wfi_sram)(void);
 83 
 84 extern void omap3_save_scratchpad_contents(void);
 85 
 86 #define PM_RTA_ERRATUM_i608             (1 << 0)
 87 #define PM_SDRC_WAKEUP_ERRATUM_i583     (1 << 1)
 88 #define PM_PER_MEMORIES_ERRATUM_i582    (1 << 2)
 89 
 90 #if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3)
 91 extern u16 pm34xx_errata;
 92 #define IS_PM34XX_ERRATUM(id)           (pm34xx_errata & (id))
 93 extern void enable_omap3630_toggle_l2_on_restore(void);
 94 #else
 95 #define IS_PM34XX_ERRATUM(id)           0
 96 static inline void enable_omap3630_toggle_l2_on_restore(void) { }
 97 #endif          /* defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3) */
 98 
 99 #define PM_OMAP4_ROM_SMP_BOOT_ERRATUM_GICD      (1 << 0)
100 #define PM_OMAP4_CPU_OSWR_DISABLE               (1 << 1)
101 
102 #if defined(CONFIG_PM) && (defined(CONFIG_ARCH_OMAP4) ||\
103            defined(CONFIG_SOC_OMAP5) || defined(CONFIG_SOC_DRA7XX))
104 extern u16 pm44xx_errata;
105 #define IS_PM44XX_ERRATUM(id)           (pm44xx_errata & (id))
106 #else
107 #define IS_PM44XX_ERRATUM(id)           0
108 #endif
109 
110 #ifdef CONFIG_POWER_AVS_OMAP
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 #ifdef CONFIG_PM
138 extern void omap_pm_setup_oscillator(u32 tstart, u32 tshut);
139 extern void omap_pm_get_oscillator(u32 *tstart, u32 *tshut);
140 extern void omap_pm_setup_sr_i2c_pcb_length(u32 mm);
141 #else
142 static inline void omap_pm_setup_oscillator(u32 tstart, u32 tshut) { }
143 static inline void omap_pm_get_oscillator(u32 *tstart, u32 *tshut) { *tstart = *tshut = 0; }
144 static inline void omap_pm_setup_sr_i2c_pcb_length(u32 mm) { }
145 #endif
146 
147 #ifdef CONFIG_SUSPEND
148 void omap_common_suspend_init(void *pm_suspend);
149 #else
150 static inline void omap_common_suspend_init(void *pm_suspend)
151 {
152 }
153 #endif /* CONFIG_SUSPEND */
154 #endif
155 

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