LXR linux/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__
  19extern void __iomem *prm_base;
  20extern 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 */
 110struct 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 * @was_any_context_lost_old: ptr to the SoC PRM context loss test fn
 119 * @clear_context_loss_flags_old: ptr to the SoC PRM context loss flag clear fn
 120 *
 121 * XXX @was_any_context_lost_old and @clear_context_loss_flags_old are
 122 * deprecated.
 123 */
 124struct prm_ll_data {
 125        u32 (*read_reset_sources)(void);
 126        bool (*was_any_context_lost_old)(u8 part, s16 inst, u16 idx);
 127        void (*clear_context_loss_flags_old)(u8 part, s16 inst, u16 idx);
 128};
 129
 130extern int prm_register(struct prm_ll_data *pld);
 131extern int prm_unregister(struct prm_ll_data *pld);
 132
 133extern u32 prm_read_reset_sources(void);
 134extern bool prm_was_any_context_lost_old(u8 part, s16 inst, u16 idx);
 135extern void prm_clear_context_loss_flags_old(u8 part, s16 inst, u16 idx);
 136
 137#endif
 138
 139
 140#endif
 141