arch/arm/mach-omap2/prm.h

   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 # endif
  24
  25 /*
  26  * prm_features flag values
  27  *
  28  * PRM_HAS_IO_WAKEUP: has IO wakeup capability
  29  * PRM_HAS_VOLTAGE: has voltage domains
  30  */
  31 #define PRM_HAS_IO_WAKEUP       (1 << 0)
  32
  33 /*
  34  * MAX_MODULE_SOFTRESET_WAIT: Maximum microseconds to wait for OMAP
  35  * module to softreset
  36  */
  37 #define MAX_MODULE_SOFTRESET_WAIT               10000
  38
  39 /*
  40  * MAX_MODULE_HARDRESET_WAIT: Maximum microseconds to wait for an OMAP
  41  * submodule to exit hardreset
  42  */
  43 #define MAX_MODULE_HARDRESET_WAIT               10000
  44
  45 /*
  46  * Register bitfields
  47  */
  48
  49 /*
  50  * 24XX: PM_PWSTST_CORE, PM_PWSTST_GFX, PM_PWSTST_MPU, PM_PWSTST_DSP
  51  *
  52  * 2430: PM_PWSTST_MDM
  53  *
  54  * 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX,
  55  *       PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU,
  56  *       PM_PWSTST_NEON
  57  */
  58 #define OMAP_INTRANSITION_MASK                          (1 << 20)
  59
  60
  61 /*
  62  * 24XX: PM_PWSTST_GFX, PM_PWSTST_DSP
  63  *
  64  * 2430: PM_PWSTST_MDM
  65  *
  66  * 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX,
  67  *       PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU,
  68  *       PM_PWSTST_NEON
  69  */
  70 #define OMAP_POWERSTATEST_SHIFT                         0
  71 #define OMAP_POWERSTATEST_MASK                          (0x3 << 0)
  72
  73 /*
  74  * 24XX: PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE, PM_PWSTCTRL_GFX,
  75  *       PM_PWSTCTRL_DSP, PM_PWSTST_MPU
  76  *
  77  * 2430: PM_PWSTCTRL_MDM shared bits
  78  *
  79  * 3430: PM_PWSTCTRL_IVA2, PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE,
  80  *       PM_PWSTCTRL_GFX, PM_PWSTCTRL_DSS, PM_PWSTCTRL_CAM, PM_PWSTCTRL_PER,
  81  *       PM_PWSTCTRL_NEON shared bits
  82  */
  83 #define OMAP_POWERSTATE_SHIFT                           0
  84 #define OMAP_POWERSTATE_MASK                            (0x3 << 0)
  85
  86 /*
  87  * Standardized OMAP reset source bits
  88  *
  89  * To the extent these happen to match the hardware register bit
  90  * shifts, it's purely coincidental.  Used by omap-wdt.c.
  91  * OMAP_UNKNOWN_RST_SRC_ID_SHIFT is a special value, used whenever
  92  * there are any bits remaining in the global PRM_RSTST register that
  93  * haven't been identified, or when the PRM code for the current SoC
  94  * doesn't know how to interpret the register.
  95  */
  96 #define OMAP_GLOBAL_COLD_RST_SRC_ID_SHIFT                       0
  97 #define OMAP_GLOBAL_WARM_RST_SRC_ID_SHIFT                       1
  98 #define OMAP_SECU_VIOL_RST_SRC_ID_SHIFT                         2
  99 #define OMAP_MPU_WD_RST_SRC_ID_SHIFT                            3
 100 #define OMAP_SECU_WD_RST_SRC_ID_SHIFT                           4
 101 #define OMAP_EXTWARM_RST_SRC_ID_SHIFT                           5
 102 #define OMAP_VDD_MPU_VM_RST_SRC_ID_SHIFT                        6
 103 #define OMAP_VDD_IVA_VM_RST_SRC_ID_SHIFT                        7
 104 #define OMAP_VDD_CORE_VM_RST_SRC_ID_SHIFT                       8
 105 #define OMAP_ICEPICK_RST_SRC_ID_SHIFT                           9
 106 #define OMAP_ICECRUSHER_RST_SRC_ID_SHIFT                        10
 107 #define OMAP_C2C_RST_SRC_ID_SHIFT                               11
 108 #define OMAP_UNKNOWN_RST_SRC_ID_SHIFT                           12
 109
 110 #ifndef __ASSEMBLER__
 111
 112 /**
 113  * struct prm_reset_src_map - map register bitshifts to standard bitshifts
 114  * @reg_shift: bitshift in the PRM reset source register
 115  * @std_shift: bitshift equivalent in the standard reset source list
 116  *
 117  * The fields are signed because -1 is used as a terminator.
 118  */
 119 struct prm_reset_src_map {
 120         s8 reg_shift;
 121         s8 std_shift;
 122 };
 123
 124 /**
 125  * struct prm_ll_data - fn ptrs to per-SoC PRM function implementations
 126  * @read_reset_sources: ptr to the SoC PRM-specific get_reset_source impl
 127  * @was_any_context_lost_old: ptr to the SoC PRM context loss test fn
 128  * @clear_context_loss_flags_old: ptr to the SoC PRM context loss flag clear fn
 129  * @late_init: ptr to the late init function
 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 };
 140
 141 extern int prm_register(struct prm_ll_data *pld);
 142 extern int prm_unregister(struct prm_ll_data *pld);
 143
 144 extern u32 prm_read_reset_sources(void);
 145 extern bool prm_was_any_context_lost_old(u8 part, s16 inst, u16 idx);
 146 extern void prm_clear_context_loss_flags_old(u8 part, s16 inst, u16 idx);
 147
 148 #endif
 149
 150
 151 #endif