xref: /openbmc/linux/arch/arm/mach-omap2/pm.h (revision 68198dca)
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