1 /* 2 * OMAP2/3/4 Power/Reset Management (PRM) bitfield definitions 3 * 4 * Copyright (C) 2007-2009, 2012 Texas Instruments, Inc. 5 * Copyright (C) 2010 Nokia Corporation 6 * 7 * Paul Walmsley 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. 12 */ 13 #ifndef __ARCH_ARM_MACH_OMAP2_PRM_H 14 #define __ARCH_ARM_MACH_OMAP2_PRM_H 15 16 #include "prcm-common.h" 17 18 # ifndef __ASSEMBLER__ 19 extern void __iomem *prm_base; 20 extern u16 prm_features; 21 extern void omap2_set_globals_prm(void __iomem *prm); 22 int of_prcm_init(void); 23 void omap3_prcm_legacy_iomaps_init(void); 24 # endif 25 26 /* 27 * prm_features flag values 28 * 29 * PRM_HAS_IO_WAKEUP: has IO wakeup capability 30 * PRM_HAS_VOLTAGE: has voltage domains 31 */ 32 #define PRM_HAS_IO_WAKEUP (1 << 0) 33 #define PRM_HAS_VOLTAGE (1 << 1) 34 35 /* 36 * MAX_MODULE_SOFTRESET_WAIT: Maximum microseconds to wait for OMAP 37 * module to softreset 38 */ 39 #define MAX_MODULE_SOFTRESET_WAIT 10000 40 41 /* 42 * MAX_MODULE_HARDRESET_WAIT: Maximum microseconds to wait for an OMAP 43 * submodule to exit hardreset 44 */ 45 #define MAX_MODULE_HARDRESET_WAIT 10000 46 47 /* 48 * Register bitfields 49 */ 50 51 /* 52 * 24XX: PM_PWSTST_CORE, PM_PWSTST_GFX, PM_PWSTST_MPU, PM_PWSTST_DSP 53 * 54 * 2430: PM_PWSTST_MDM 55 * 56 * 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX, 57 * PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU, 58 * PM_PWSTST_NEON 59 */ 60 #define OMAP_INTRANSITION_MASK (1 << 20) 61 62 63 /* 64 * 24XX: PM_PWSTST_GFX, PM_PWSTST_DSP 65 * 66 * 2430: PM_PWSTST_MDM 67 * 68 * 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX, 69 * PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU, 70 * PM_PWSTST_NEON 71 */ 72 #define OMAP_POWERSTATEST_SHIFT 0 73 #define OMAP_POWERSTATEST_MASK (0x3 << 0) 74 75 /* 76 * 24XX: PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE, PM_PWSTCTRL_GFX, 77 * PM_PWSTCTRL_DSP, PM_PWSTST_MPU 78 * 79 * 2430: PM_PWSTCTRL_MDM shared bits 80 * 81 * 3430: PM_PWSTCTRL_IVA2, PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE, 82 * PM_PWSTCTRL_GFX, PM_PWSTCTRL_DSS, PM_PWSTCTRL_CAM, PM_PWSTCTRL_PER, 83 * PM_PWSTCTRL_NEON shared bits 84 */ 85 #define OMAP_POWERSTATE_SHIFT 0 86 #define OMAP_POWERSTATE_MASK (0x3 << 0) 87 88 /* 89 * Standardized OMAP reset source bits 90 * 91 * To the extent these happen to match the hardware register bit 92 * shifts, it's purely coincidental. Used by omap-wdt.c. 93 * OMAP_UNKNOWN_RST_SRC_ID_SHIFT is a special value, used whenever 94 * there are any bits remaining in the global PRM_RSTST register that 95 * haven't been identified, or when the PRM code for the current SoC 96 * doesn't know how to interpret the register. 97 */ 98 #define OMAP_GLOBAL_COLD_RST_SRC_ID_SHIFT 0 99 #define OMAP_GLOBAL_WARM_RST_SRC_ID_SHIFT 1 100 #define OMAP_SECU_VIOL_RST_SRC_ID_SHIFT 2 101 #define OMAP_MPU_WD_RST_SRC_ID_SHIFT 3 102 #define OMAP_SECU_WD_RST_SRC_ID_SHIFT 4 103 #define OMAP_EXTWARM_RST_SRC_ID_SHIFT 5 104 #define OMAP_VDD_MPU_VM_RST_SRC_ID_SHIFT 6 105 #define OMAP_VDD_IVA_VM_RST_SRC_ID_SHIFT 7 106 #define OMAP_VDD_CORE_VM_RST_SRC_ID_SHIFT 8 107 #define OMAP_ICEPICK_RST_SRC_ID_SHIFT 9 108 #define OMAP_ICECRUSHER_RST_SRC_ID_SHIFT 10 109 #define OMAP_C2C_RST_SRC_ID_SHIFT 11 110 #define OMAP_UNKNOWN_RST_SRC_ID_SHIFT 12 111 112 #ifndef __ASSEMBLER__ 113 114 /** 115 * struct prm_reset_src_map - map register bitshifts to standard bitshifts 116 * @reg_shift: bitshift in the PRM reset source register 117 * @std_shift: bitshift equivalent in the standard reset source list 118 * 119 * The fields are signed because -1 is used as a terminator. 120 */ 121 struct prm_reset_src_map { 122 s8 reg_shift; 123 s8 std_shift; 124 }; 125 126 /** 127 * struct prm_ll_data - fn ptrs to per-SoC PRM function implementations 128 * @read_reset_sources: ptr to the SoC PRM-specific get_reset_source impl 129 * @was_any_context_lost_old: ptr to the SoC PRM context loss test fn 130 * @clear_context_loss_flags_old: ptr to the SoC PRM context loss flag clear fn 131 * @late_init: ptr to the late init function 132 * @assert_hardreset: ptr to the SoC PRM hardreset assert impl 133 * @deassert_hardreset: ptr to the SoC PRM hardreset deassert impl 134 * 135 * XXX @was_any_context_lost_old and @clear_context_loss_flags_old are 136 * deprecated. 137 */ 138 struct prm_ll_data { 139 u32 (*read_reset_sources)(void); 140 bool (*was_any_context_lost_old)(u8 part, s16 inst, u16 idx); 141 void (*clear_context_loss_flags_old)(u8 part, s16 inst, u16 idx); 142 int (*late_init)(void); 143 int (*assert_hardreset)(u8 shift, u8 part, s16 prm_mod, u16 offset); 144 int (*deassert_hardreset)(u8 shift, u8 st_shift, u8 part, s16 prm_mod, 145 u16 offset, u16 st_offset); 146 int (*is_hardreset_asserted)(u8 shift, u8 part, s16 prm_mod, 147 u16 offset); 148 void (*reset_system)(void); 149 }; 150 151 extern int prm_register(struct prm_ll_data *pld); 152 extern int prm_unregister(struct prm_ll_data *pld); 153 154 int omap_prm_assert_hardreset(u8 shift, u8 part, s16 prm_mod, u16 offset); 155 int omap_prm_deassert_hardreset(u8 shift, u8 st_shift, u8 part, s16 prm_mod, 156 u16 offset, u16 st_offset); 157 int omap_prm_is_hardreset_asserted(u8 shift, u8 part, s16 prm_mod, u16 offset); 158 extern u32 prm_read_reset_sources(void); 159 extern bool prm_was_any_context_lost_old(u8 part, s16 inst, u16 idx); 160 extern void prm_clear_context_loss_flags_old(u8 part, s16 inst, u16 idx); 161 void omap_prm_reset_system(void); 162 163 void omap_prm_reconfigure_io_chain(void); 164 165 #endif 166 167 168 #endif 169