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 void omap2_set_globals_prm(void __iomem *prm); 21 int of_prcm_init(void); 22 # endif 23 24 25 /* 26 * MAX_MODULE_SOFTRESET_WAIT: Maximum microseconds to wait for OMAP 27 * module to softreset 28 */ 29 #define MAX_MODULE_SOFTRESET_WAIT 10000 30 31 /* 32 * MAX_MODULE_HARDRESET_WAIT: Maximum microseconds to wait for an OMAP 33 * submodule to exit hardreset 34 */ 35 #define MAX_MODULE_HARDRESET_WAIT 10000 36 37 /* 38 * Register bitfields 39 */ 40 41 /* 42 * 24XX: PM_PWSTST_CORE, PM_PWSTST_GFX, PM_PWSTST_MPU, PM_PWSTST_DSP 43 * 44 * 2430: PM_PWSTST_MDM 45 * 46 * 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX, 47 * PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU, 48 * PM_PWSTST_NEON 49 */ 50 #define OMAP_INTRANSITION_MASK (1 << 20) 51 52 53 /* 54 * 24XX: PM_PWSTST_GFX, PM_PWSTST_DSP 55 * 56 * 2430: PM_PWSTST_MDM 57 * 58 * 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX, 59 * PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU, 60 * PM_PWSTST_NEON 61 */ 62 #define OMAP_POWERSTATEST_SHIFT 0 63 #define OMAP_POWERSTATEST_MASK (0x3 << 0) 64 65 /* 66 * 24XX: PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE, PM_PWSTCTRL_GFX, 67 * PM_PWSTCTRL_DSP, PM_PWSTST_MPU 68 * 69 * 2430: PM_PWSTCTRL_MDM shared bits 70 * 71 * 3430: PM_PWSTCTRL_IVA2, PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE, 72 * PM_PWSTCTRL_GFX, PM_PWSTCTRL_DSS, PM_PWSTCTRL_CAM, PM_PWSTCTRL_PER, 73 * PM_PWSTCTRL_NEON shared bits 74 */ 75 #define OMAP_POWERSTATE_SHIFT 0 76 #define OMAP_POWERSTATE_MASK (0x3 << 0) 77 78 /* 79 * Standardized OMAP reset source bits 80 * 81 * To the extent these happen to match the hardware register bit 82 * shifts, it's purely coincidental. Used by omap-wdt.c. 83 * OMAP_UNKNOWN_RST_SRC_ID_SHIFT is a special value, used whenever 84 * there are any bits remaining in the global PRM_RSTST register that 85 * haven't been identified, or when the PRM code for the current SoC 86 * doesn't know how to interpret the register. 87 */ 88 #define OMAP_GLOBAL_COLD_RST_SRC_ID_SHIFT 0 89 #define OMAP_GLOBAL_WARM_RST_SRC_ID_SHIFT 1 90 #define OMAP_SECU_VIOL_RST_SRC_ID_SHIFT 2 91 #define OMAP_MPU_WD_RST_SRC_ID_SHIFT 3 92 #define OMAP_SECU_WD_RST_SRC_ID_SHIFT 4 93 #define OMAP_EXTWARM_RST_SRC_ID_SHIFT 5 94 #define OMAP_VDD_MPU_VM_RST_SRC_ID_SHIFT 6 95 #define OMAP_VDD_IVA_VM_RST_SRC_ID_SHIFT 7 96 #define OMAP_VDD_CORE_VM_RST_SRC_ID_SHIFT 8 97 #define OMAP_ICEPICK_RST_SRC_ID_SHIFT 9 98 #define OMAP_ICECRUSHER_RST_SRC_ID_SHIFT 10 99 #define OMAP_C2C_RST_SRC_ID_SHIFT 11 100 #define OMAP_UNKNOWN_RST_SRC_ID_SHIFT 12 101 102 #ifndef __ASSEMBLER__ 103 104 /** 105 * struct prm_reset_src_map - map register bitshifts to standard bitshifts 106 * @reg_shift: bitshift in the PRM reset source register 107 * @std_shift: bitshift equivalent in the standard reset source list 108 * 109 * The fields are signed because -1 is used as a terminator. 110 */ 111 struct prm_reset_src_map { 112 s8 reg_shift; 113 s8 std_shift; 114 }; 115 116 /** 117 * struct prm_ll_data - fn ptrs to per-SoC PRM function implementations 118 * @read_reset_sources: ptr to the SoC PRM-specific get_reset_source impl 119 * @was_any_context_lost_old: ptr to the SoC PRM context loss test fn 120 * @clear_context_loss_flags_old: ptr to the SoC PRM context loss flag clear fn 121 * 122 * XXX @was_any_context_lost_old and @clear_context_loss_flags_old are 123 * deprecated. 124 */ 125 struct prm_ll_data { 126 u32 (*read_reset_sources)(void); 127 bool (*was_any_context_lost_old)(u8 part, s16 inst, u16 idx); 128 void (*clear_context_loss_flags_old)(u8 part, s16 inst, u16 idx); 129 }; 130 131 extern int prm_register(struct prm_ll_data *pld); 132 extern int prm_unregister(struct prm_ll_data *pld); 133 134 extern u32 prm_read_reset_sources(void); 135 extern bool prm_was_any_context_lost_old(u8 part, s16 inst, u16 idx); 136 extern void prm_clear_context_loss_flags_old(u8 part, s16 inst, u16 idx); 137 138 #endif 139 140 141 #endif 142