Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
pm.h
Go to the documentation of this file.
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 #define PM_PER_MEMORIES_ERRATUM_i582 (1 << 2)
95 
96 #if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3)
97 extern u16 pm34xx_errata;
98 #define IS_PM34XX_ERRATUM(id) (pm34xx_errata & (id))
99 extern void enable_omap3630_toggle_l2_on_restore(void);
100 #else
101 #define IS_PM34XX_ERRATUM(id) 0
102 static inline void enable_omap3630_toggle_l2_on_restore(void) { }
103 #endif /* defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3) */
104 
105 #ifdef CONFIG_POWER_AVS_OMAP
106 extern int omap_devinit_smartreflex(void);
107 extern void omap_enable_smartreflex_on_init(void);
108 #else
109 static inline int omap_devinit_smartreflex(void)
110 {
111  return -EINVAL;
112 }
113 
114 static inline void omap_enable_smartreflex_on_init(void) {}
115 #endif
116 
117 #ifdef CONFIG_TWL4030_CORE
118 extern int omap3_twl_init(void);
119 extern int omap4_twl_init(void);
120 extern int omap3_twl_set_sr_bit(bool enable);
121 #else
122 static inline int omap3_twl_init(void)
123 {
124  return -EINVAL;
125 }
126 static inline int omap4_twl_init(void)
127 {
128  return -EINVAL;
129 }
130 #endif
131 
132 #endif