1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * TI pm33xx platform data
4 *
5 * Copyright (C) 2016-2018 Texas Instruments, Inc.
6 * Dave Gerlach <d-gerlach@ti.com>
7 */
8
9 #ifndef _LINUX_PLATFORM_DATA_PM33XX_H
10 #define _LINUX_PLATFORM_DATA_PM33XX_H
11
12 #include <linux/kbuild.h>
13 #include <linux/types.h>
14
15 /*
16 * WFI Flags for sleep code control
17 *
18 * These flags allow PM code to exclude certain operations from happening
19 * in the low level ASM code found in sleep33xx.S and sleep43xx.S
20 *
21 * WFI_FLAG_FLUSH_CACHE: Flush the ARM caches and disable caching. Only
22 * needed when MPU will lose context.
23 * WFI_FLAG_SELF_REFRESH: Let EMIF place DDR memory into self-refresh and
24 * disable EMIF.
25 * WFI_FLAG_SAVE_EMIF: Save context of all EMIF registers and restore in
26 * resume path. Only needed if PER domain loses context
27 * and must also have WFI_FLAG_SELF_REFRESH set.
28 * WFI_FLAG_WAKE_M3: Disable MPU clock or clockdomain to cause wkup_m3 to
29 * execute when WFI instruction executes.
30 * WFI_FLAG_RTC_ONLY: Configure the RTC to enter RTC+DDR mode.
31 */
32 #define WFI_FLAG_FLUSH_CACHE BIT(0)
33 #define WFI_FLAG_SELF_REFRESH BIT(1)
34 #define WFI_FLAG_SAVE_EMIF BIT(2)
35 #define WFI_FLAG_WAKE_M3 BIT(3)
36 #define WFI_FLAG_RTC_ONLY BIT(4)
37
38 #ifndef __ASSEMBLER__
39 struct am33xx_pm_sram_addr {
40 void (*do_wfi)(void);
41 unsigned long *do_wfi_sz;
42 unsigned long *resume_offset;
43 unsigned long *emif_sram_table;
44 unsigned long *ro_sram_data;
45 unsigned long resume_address;
46 };
47
48 struct am33xx_pm_platform_data {
49 int (*init)(int (*idle)(u32 wfi_flags));
50 int (*deinit)(void);
51 int (*soc_suspend)(unsigned int state, int (*fn)(unsigned long),
52 unsigned long args);
53 int (*cpu_suspend)(int (*fn)(unsigned long), unsigned long args);
54 void (*begin_suspend)(void);
55 void (*finish_suspend)(void);
56 struct am33xx_pm_sram_addr *(*get_sram_addrs)(void);
57 void (*save_context)(void);
58 void (*restore_context)(void);
59 int (*check_off_mode_enable)(void);
60 };
61
62 struct am33xx_pm_sram_data {
63 u32 wfi_flags;
64 u32 l2_aux_ctrl_val;
65 u32 l2_prefetch_ctrl_val;
66 } __packed __aligned(8);
67
68 struct am33xx_pm_ro_sram_data {
69 u32 amx3_pm_sram_data_virt;
70 u32 amx3_pm_sram_data_phys;
71 void __iomem *rtc_base_virt;
72 } __packed __aligned(8);
73
74 #endif /* __ASSEMBLER__ */
75 #endif /* _LINUX_PLATFORM_DATA_PM33XX_H */
76
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