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1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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2 | #ifndef _ASM_SH_SUSPEND_H |
3 | #define _ASM_SH_SUSPEND_H |
4 | |
5 | #ifndef __ASSEMBLY__ |
6 | #include <linux/notifier.h> |
7 | |
8 | #include <asm/ptrace.h> |
9 | |
10 | struct swsusp_arch_regs { |
11 | struct pt_regs user_regs; |
12 | unsigned long bank1_regs[8]; |
13 | }; |
14 | |
15 | void sh_mobile_call_standby(unsigned long mode); |
16 | |
17 | #ifdef CONFIG_CPU_IDLE |
18 | int sh_mobile_setup_cpuidle(void); |
19 | #else |
20 | static inline int sh_mobile_setup_cpuidle(void) { return 0; } |
21 | #endif |
22 | |
23 | /* notifier chains for pre/post sleep hooks */ |
24 | extern struct atomic_notifier_head sh_mobile_pre_sleep_notifier_list; |
25 | extern struct atomic_notifier_head sh_mobile_post_sleep_notifier_list; |
26 | |
27 | /* priority levels for notifiers */ |
28 | #define SH_MOBILE_SLEEP_BOARD 0 |
29 | #define SH_MOBILE_SLEEP_CPU 1 |
30 | #define SH_MOBILE_PRE(x) (x) |
31 | #define SH_MOBILE_POST(x) (-(x)) |
32 | |
33 | /* board code registration function for self-refresh assembly snippets */ |
34 | void sh_mobile_register_self_refresh(unsigned long flags, |
35 | void *pre_start, void *pre_end, |
36 | void *post_start, void *post_end); |
37 | |
38 | /* register structure for address/data information */ |
39 | struct sh_sleep_regs { |
40 | unsigned long stbcr; |
41 | unsigned long bar; |
42 | |
43 | /* MMU */ |
44 | unsigned long pteh; |
45 | unsigned long ptel; |
46 | unsigned long ttb; |
47 | unsigned long tea; |
48 | unsigned long mmucr; |
49 | unsigned long ptea; |
50 | unsigned long pascr; |
51 | unsigned long irmcr; |
52 | |
53 | /* Cache */ |
54 | unsigned long ccr; |
55 | unsigned long ramcr; |
56 | }; |
57 | |
58 | /* data area for low-level sleep code */ |
59 | struct sh_sleep_data { |
60 | /* current sleep mode (SUSP_SH_...) */ |
61 | unsigned long mode; |
62 | |
63 | /* addresses of board specific self-refresh snippets */ |
64 | unsigned long sf_pre; |
65 | unsigned long sf_post; |
66 | |
67 | /* address of resume code */ |
68 | unsigned long resume; |
69 | |
70 | /* register state saved and restored by the assembly code */ |
71 | unsigned long vbr; |
72 | unsigned long spc; |
73 | unsigned long sr; |
74 | unsigned long sp; |
75 | |
76 | /* structure for keeping register addresses */ |
77 | struct sh_sleep_regs addr; |
78 | |
79 | /* structure for saving/restoring register state */ |
80 | struct sh_sleep_regs data; |
81 | }; |
82 | |
83 | /* a bitmap of supported sleep modes (SUSP_SH..) */ |
84 | extern unsigned long sh_mobile_sleep_supported; |
85 | |
86 | #endif |
87 | |
88 | /* flags passed to assembly suspend code */ |
89 | #define SUSP_SH_SLEEP (1 << 0) /* Regular sleep mode */ |
90 | #define SUSP_SH_STANDBY (1 << 1) /* SH-Mobile Software standby mode */ |
91 | #define SUSP_SH_RSTANDBY (1 << 2) /* SH-Mobile R-standby mode */ |
92 | #define SUSP_SH_USTANDBY (1 << 3) /* SH-Mobile U-standby mode */ |
93 | #define SUSP_SH_SF (1 << 4) /* Enable self-refresh */ |
94 | #define SUSP_SH_MMU (1 << 5) /* Save/restore MMU and cache */ |
95 | #define SUSP_SH_REGS (1 << 6) /* Save/restore registers */ |
96 | |
97 | #endif /* _ASM_SH_SUSPEND_H */ |
98 |
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