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