1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * OMAP2/3 Power Management Routines
4 *
5 * Copyright (C) 2008 Nokia Corporation
6 * Jouni Hogander
7 */
8#ifndef __ARCH_ARM_MACH_OMAP2_PM_H
9#define __ARCH_ARM_MACH_OMAP2_PM_H
10
11#include <linux/err.h>
12
13#include "powerdomain.h"
14
15#ifdef CONFIG_CPU_IDLE
16extern int __init omap3_idle_init(void);
17extern int __init omap4_idle_init(void);
18#else
19static inline int omap3_idle_init(void)
20{
21 return 0;
22}
23
24static inline int omap4_idle_init(void)
25{
26 return 0;
27}
28#endif
29
30extern void *omap3_secure_ram_storage;
31extern void omap3_pm_off_mode_enable(int);
32extern void omap_sram_idle(bool rcuidle);
33extern int omap_pm_clkdms_setup(struct clockdomain *clkdm, void *unused);
34
35extern int omap3_pm_get_suspend_state(struct powerdomain *pwrdm);
36extern int omap3_pm_set_suspend_state(struct powerdomain *pwrdm, int state);
37
38extern u32 enable_off_mode;
39
40#if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
41extern void pm_dbg_update_time(struct powerdomain *pwrdm, int prev);
42#else
43#define pm_dbg_update_time(pwrdm, prev) do {} while (0);
44#endif /* CONFIG_PM_DEBUG */
45
46/* 24xx */
47extern void omap24xx_cpu_suspend(u32 dll_ctrl, void __iomem *sdrc_dlla_ctrl,
48 void __iomem *sdrc_power);
49extern unsigned int omap24xx_cpu_suspend_sz;
50
51/* 3xxx */
52extern void omap34xx_cpu_suspend(int save_state);
53
54/* omap3_do_wfi function pointer and size, for copy to SRAM */
55extern void omap3_do_wfi(void);
56extern unsigned int omap3_do_wfi_sz;
57/* ... and its pointer from SRAM after copy */
58extern void (*omap3_do_wfi_sram)(void);
59
60extern struct am33xx_pm_sram_addr am33xx_pm_sram;
61extern struct am33xx_pm_sram_addr am43xx_pm_sram;
62
63extern void omap3_save_scratchpad_contents(void);
64
65#define PM_RTA_ERRATUM_i608 (1 << 0)
66#define PM_SDRC_WAKEUP_ERRATUM_i583 (1 << 1)
67#define PM_PER_MEMORIES_ERRATUM_i582 (1 << 2)
68
69#if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3)
70extern u16 pm34xx_errata;
71#define IS_PM34XX_ERRATUM(id) (pm34xx_errata & (id))
72extern void enable_omap3630_toggle_l2_on_restore(void);
73#else
74#define IS_PM34XX_ERRATUM(id) 0
75static inline void enable_omap3630_toggle_l2_on_restore(void) { }
76#endif /* defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3) */
77
78#define PM_OMAP4_ROM_SMP_BOOT_ERRATUM_GICD (1 << 0)
79#define PM_OMAP4_CPU_OSWR_DISABLE (1 << 1)
80
81#if defined(CONFIG_PM) && (defined(CONFIG_ARCH_OMAP4) ||\
82 defined(CONFIG_SOC_OMAP5) || defined(CONFIG_SOC_DRA7XX))
83extern u16 pm44xx_errata;
84#define IS_PM44XX_ERRATUM(id) (pm44xx_errata & (id))
85#else
86#define IS_PM44XX_ERRATUM(id) 0
87#endif
88
89#define OMAP4_VP_CONFIG_ERROROFFSET 0x00
90#define OMAP4_VP_VSTEPMIN_VSTEPMIN 0x01
91#define OMAP4_VP_VSTEPMAX_VSTEPMAX 0x04
92#define OMAP4_VP_VLIMITTO_TIMEOUT_US 200
93
94#ifdef CONFIG_POWER_AVS_OMAP
95extern int omap_devinit_smartreflex(void);
96#else
97static inline int omap_devinit_smartreflex(void)
98{
99 return -EINVAL;
100}
101#endif
102
103#ifdef CONFIG_TWL4030_CORE
104extern int omap3_twl_init(void);
105extern int omap4_twl_init(void);
106#else
107static inline int omap3_twl_init(void)
108{
109 return -EINVAL;
110}
111static inline int omap4_twl_init(void)
112{
113 return -EINVAL;
114}
115#endif
116
117#if IS_ENABLED(CONFIG_MFD_CPCAP)
118extern int omap4_cpcap_init(void);
119#else
120static inline int omap4_cpcap_init(void)
121{
122 return -EINVAL;
123}
124#endif
125
126#ifdef CONFIG_PM
127extern void omap_pm_get_oscillator(u32 *tstart, u32 *tshut);
128#else
129static inline void omap_pm_get_oscillator(u32 *tstart, u32 *tshut) { *tstart = *tshut = 0; }
130#endif
131
132#ifdef CONFIG_SUSPEND
133void omap_common_suspend_init(void *pm_suspend);
134#else
135static inline void omap_common_suspend_init(void *pm_suspend)
136{
137}
138#endif /* CONFIG_SUSPEND */
139#endif
140

source code of linux/arch/arm/mach-omap2/pm.h