arch/arm/mach-omap2/prm.h

   1 /*
   2  * OMAP2/3/4 Power/Reset Management (PRM) bitfield definitions
   3  *
   4  * Copyright (C) 2007-2009 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 /*
  19  * 24XX: PM_PWSTST_CORE, PM_PWSTST_GFX, PM_PWSTST_MPU, PM_PWSTST_DSP
  20  *
  21  * 2430: PM_PWSTST_MDM
  22  *
  23  * 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX,
  24  *       PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU,
  25  *       PM_PWSTST_NEON
  26  */
  27 #define OMAP_INTRANSITION_MASK                          (1 << 20)
  28
  29
  30 /*
  31  * 24XX: PM_PWSTST_GFX, PM_PWSTST_DSP
  32  *
  33  * 2430: PM_PWSTST_MDM
  34  *
  35  * 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX,
  36  *       PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU,
  37  *       PM_PWSTST_NEON
  38  */
  39 #define OMAP_POWERSTATEST_SHIFT                         0
  40 #define OMAP_POWERSTATEST_MASK                          (0x3 << 0)
  41
  42 /*
  43  * 24XX: PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE, PM_PWSTCTRL_GFX,
  44  *       PM_PWSTCTRL_DSP, PM_PWSTST_MPU
  45  *
  46  * 2430: PM_PWSTCTRL_MDM shared bits
  47  *
  48  * 3430: PM_PWSTCTRL_IVA2, PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE,
  49  *       PM_PWSTCTRL_GFX, PM_PWSTCTRL_DSS, PM_PWSTCTRL_CAM, PM_PWSTCTRL_PER,
  50  *       PM_PWSTCTRL_NEON shared bits
  51  */
  52 #define OMAP_POWERSTATE_SHIFT                           0
  53 #define OMAP_POWERSTATE_MASK                            (0x3 << 0)
  54
  55 /*
  56  * Standardized OMAP reset source bits
  57  *
  58  * To the extent these happen to match the hardware register bit
  59  * shifts, it's purely coincidental.  Used by omap-wdt.c.
  60  * OMAP_UNKNOWN_RST_SRC_ID_SHIFT is a special value, used whenever
  61  * there are any bits remaining in the global PRM_RSTST register that
  62  * haven't been identified, or when the PRM code for the current SoC
  63  * doesn't know how to interpret the register.
  64  */
  65 #define OMAP_GLOBAL_COLD_RST_SRC_ID_SHIFT                       0
  66 #define OMAP_GLOBAL_WARM_RST_SRC_ID_SHIFT                       1
  67 #define OMAP_SECU_VIOL_RST_SRC_ID_SHIFT                         2
  68 #define OMAP_MPU_WD_RST_SRC_ID_SHIFT                            3
  69 #define OMAP_SECU_WD_RST_SRC_ID_SHIFT                           4
  70 #define OMAP_EXTWARM_RST_SRC_ID_SHIFT                           5
  71 #define OMAP_VDD_MPU_VM_RST_SRC_ID_SHIFT                        6
  72 #define OMAP_VDD_IVA_VM_RST_SRC_ID_SHIFT                        7
  73 #define OMAP_VDD_CORE_VM_RST_SRC_ID_SHIFT                       8
  74 #define OMAP_ICEPICK_RST_SRC_ID_SHIFT                           9
  75 #define OMAP_ICECRUSHER_RST_SRC_ID_SHIFT                        10
  76 #define OMAP_C2C_RST_SRC_ID_SHIFT                               11
  77 #define OMAP_UNKNOWN_RST_SRC_ID_SHIFT                           12
  78
  79 #ifndef __ASSEMBLER__
  80
  81 /**
  82  * struct prm_reset_src_map - map register bitshifts to standard bitshifts
  83  * @reg_shift: bitshift in the PRM reset source register
  84  * @std_shift: bitshift equivalent in the standard reset source list
  85  *
  86  * The fields are signed because -1 is used as a terminator.
  87  */
  88 struct prm_reset_src_map {
  89         s8 reg_shift;
  90         s8 std_shift;
  91 };
  92
  93 /**
  94  * struct prm_ll_data - fn ptrs to per-SoC PRM function implementations
  95  * @read_reset_sources: ptr to the Soc PRM-specific get_reset_source impl
  96  */
  97 struct prm_ll_data {
  98         u32 (*read_reset_sources)(void);
  99 };
 100
 101 extern int prm_register(struct prm_ll_data *pld);
 102 extern int prm_unregister(struct prm_ll_data *pld);
 103
 104 extern u32 prm_read_reset_sources(void);
 105
 106 #endif
 107
 108
 109 #endif