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