1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * OMAP2/3/4 Power/Reset Management (PRM) bitfield definitions 4 * 5 * Copyright (C) 2007-2009, 2012 Texas Instruments, Inc. 6 * Copyright (C) 2010 Nokia Corporation 7 * 8 * Paul Walmsley 9 */ 10 #ifndef __ARCH_ARM_MACH_OMAP2_PRM_H 11 #define __ARCH_ARM_MACH_OMAP2_PRM_H 12 13 #include "prcm-common.h" 14 15 # ifndef __ASSEMBLER__ 16 extern struct omap_domain_base prm_base; 17 extern u16 prm_features; 18 int omap_prcm_init(void); 19 int omap2_prcm_base_init(void); 20 # endif 21 22 /* 23 * prm_features flag values 24 * 25 * PRM_HAS_IO_WAKEUP: has IO wakeup capability 26 * PRM_HAS_VOLTAGE: has voltage domains 27 */ 28 #define PRM_HAS_IO_WAKEUP BIT(0) 29 #define PRM_HAS_VOLTAGE BIT(1) 30 31 /* 32 * MAX_MODULE_SOFTRESET_WAIT: Maximum microseconds to wait for OMAP 33 * module to softreset 34 */ 35 #define MAX_MODULE_SOFTRESET_WAIT 10000 36 37 /* 38 * MAX_MODULE_HARDRESET_WAIT: Maximum microseconds to wait for an OMAP 39 * submodule to exit hardreset 40 */ 41 #define MAX_MODULE_HARDRESET_WAIT 10000 42 43 /* 44 * Register bitfields 45 */ 46 47 /* 48 * 24XX: PM_PWSTST_CORE, PM_PWSTST_GFX, PM_PWSTST_MPU, PM_PWSTST_DSP 49 * 50 * 2430: PM_PWSTST_MDM 51 * 52 * 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX, 53 * PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU, 54 * PM_PWSTST_NEON 55 */ 56 #define OMAP_INTRANSITION_MASK (1 << 20) 57 58 59 /* 60 * 24XX: PM_PWSTST_GFX, PM_PWSTST_DSP 61 * 62 * 2430: PM_PWSTST_MDM 63 * 64 * 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX, 65 * PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU, 66 * PM_PWSTST_NEON 67 */ 68 #define OMAP_POWERSTATEST_SHIFT 0 69 #define OMAP_POWERSTATEST_MASK (0x3 << 0) 70 71 /* 72 * 24XX: PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE, PM_PWSTCTRL_GFX, 73 * PM_PWSTCTRL_DSP, PM_PWSTST_MPU 74 * 75 * 2430: PM_PWSTCTRL_MDM shared bits 76 * 77 * 3430: PM_PWSTCTRL_IVA2, PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE, 78 * PM_PWSTCTRL_GFX, PM_PWSTCTRL_DSS, PM_PWSTCTRL_CAM, PM_PWSTCTRL_PER, 79 * PM_PWSTCTRL_NEON shared bits 80 */ 81 #define OMAP_POWERSTATE_SHIFT 0 82 #define OMAP_POWERSTATE_MASK (0x3 << 0) 83 84 /* 85 * Standardized OMAP reset source bits 86 * 87 * To the extent these happen to match the hardware register bit 88 * shifts, it's purely coincidental. Used by omap-wdt.c. 89 * OMAP_UNKNOWN_RST_SRC_ID_SHIFT is a special value, used whenever 90 * there are any bits remaining in the global PRM_RSTST register that 91 * haven't been identified, or when the PRM code for the current SoC 92 * doesn't know how to interpret the register. 93 */ 94 #define OMAP_GLOBAL_COLD_RST_SRC_ID_SHIFT 0 95 #define OMAP_GLOBAL_WARM_RST_SRC_ID_SHIFT 1 96 #define OMAP_SECU_VIOL_RST_SRC_ID_SHIFT 2 97 #define OMAP_MPU_WD_RST_SRC_ID_SHIFT 3 98 #define OMAP_SECU_WD_RST_SRC_ID_SHIFT 4 99 #define OMAP_EXTWARM_RST_SRC_ID_SHIFT 5 100 #define OMAP_VDD_MPU_VM_RST_SRC_ID_SHIFT 6 101 #define OMAP_VDD_IVA_VM_RST_SRC_ID_SHIFT 7 102 #define OMAP_VDD_CORE_VM_RST_SRC_ID_SHIFT 8 103 #define OMAP_ICEPICK_RST_SRC_ID_SHIFT 9 104 #define OMAP_ICECRUSHER_RST_SRC_ID_SHIFT 10 105 #define OMAP_C2C_RST_SRC_ID_SHIFT 11 106 #define OMAP_UNKNOWN_RST_SRC_ID_SHIFT 12 107 108 #ifndef __ASSEMBLER__ 109 110 /** 111 * struct prm_reset_src_map - map register bitshifts to standard bitshifts 112 * @reg_shift: bitshift in the PRM reset source register 113 * @std_shift: bitshift equivalent in the standard reset source list 114 * 115 * The fields are signed because -1 is used as a terminator. 116 */ 117 struct prm_reset_src_map { 118 s8 reg_shift; 119 s8 std_shift; 120 }; 121 122 /** 123 * struct prm_ll_data - fn ptrs to per-SoC PRM function implementations 124 * @read_reset_sources: ptr to the SoC PRM-specific get_reset_source impl 125 * @was_any_context_lost_old: ptr to the SoC PRM context loss test fn 126 * @clear_context_loss_flags_old: ptr to the SoC PRM context loss flag clear fn 127 * @late_init: ptr to the late init function 128 * @assert_hardreset: ptr to the SoC PRM hardreset assert impl 129 * @deassert_hardreset: ptr to the SoC PRM hardreset deassert impl 130 * 131 * XXX @was_any_context_lost_old and @clear_context_loss_flags_old are 132 * deprecated. 133 */ 134 struct prm_ll_data { 135 u32 (*read_reset_sources)(void); 136 bool (*was_any_context_lost_old)(u8 part, s16 inst, u16 idx); 137 void (*clear_context_loss_flags_old)(u8 part, s16 inst, u16 idx); 138 int (*late_init)(void); 139 int (*assert_hardreset)(u8 shift, u8 part, s16 prm_mod, u16 offset); 140 int (*deassert_hardreset)(u8 shift, u8 st_shift, u8 part, s16 prm_mod, 141 u16 offset, u16 st_offset); 142 int (*is_hardreset_asserted)(u8 shift, u8 part, s16 prm_mod, 143 u16 offset); 144 void (*reset_system)(void); 145 int (*clear_mod_irqs)(s16 module, u8 regs, u32 wkst_mask); 146 u32 (*vp_check_txdone)(u8 vp_id); 147 void (*vp_clear_txdone)(u8 vp_id); 148 }; 149 150 extern int prm_register(struct prm_ll_data *pld); 151 extern int prm_unregister(struct prm_ll_data *pld); 152 153 int omap_prm_assert_hardreset(u8 shift, u8 part, s16 prm_mod, u16 offset); 154 int omap_prm_deassert_hardreset(u8 shift, u8 st_shift, u8 part, s16 prm_mod, 155 u16 offset, u16 st_offset); 156 int omap_prm_is_hardreset_asserted(u8 shift, u8 part, s16 prm_mod, u16 offset); 157 extern bool prm_was_any_context_lost_old(u8 part, s16 inst, u16 idx); 158 extern void prm_clear_context_loss_flags_old(u8 part, s16 inst, u16 idx); 159 void omap_prm_reset_system(void); 160 161 int omap_prm_clear_mod_irqs(s16 module, u8 regs, u32 wkst_mask); 162 163 /* 164 * Voltage Processor (VP) identifiers 165 */ 166 #define OMAP3_VP_VDD_MPU_ID 0 167 #define OMAP3_VP_VDD_CORE_ID 1 168 #define OMAP4_VP_VDD_CORE_ID 0 169 #define OMAP4_VP_VDD_IVA_ID 1 170 #define OMAP4_VP_VDD_MPU_ID 2 171 172 u32 omap_prm_vp_check_txdone(u8 vp_id); 173 void omap_prm_vp_clear_txdone(u8 vp_id); 174 175 #endif 176 177 178 #endif 179