kernel/2.6.29.6-aldebaran-rt/arch/arm/mach-omap2/powerdomains.h

   1 /*
   2  * OMAP2/3 common powerdomain definitions
   3  *
   4  * Copyright (C) 2007-8 Texas Instruments, Inc.
   5  * Copyright (C) 2007-8 Nokia Corporation
   6  *
   7  * Written by Paul Walmsley
   8  * Debugging and integration fixes by Jouni Högander
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #ifndef ARCH_ARM_MACH_OMAP2_POWERDOMAINS
  16 #define ARCH_ARM_MACH_OMAP2_POWERDOMAINS
  17
  18 /*
  19  * This file contains all of the powerdomains that have some element
  20  * of software control for the OMAP24xx and OMAP34XX chips.
  21  *
  22  * A few notes:
  23  *
  24  * This is not an exhaustive listing of powerdomains on the chips; only
  25  * powerdomains that can be controlled in software.
  26  *
  27  * A useful validation rule for struct powerdomain:
  28  * Any powerdomain referenced by a wkdep_srcs or sleepdep_srcs array
  29  * must have a dep_bit assigned.  So wkdep_srcs/sleepdep_srcs are really
  30  * just software-controllable dependencies.  Non-software-controllable
  31  * dependencies do exist, but they are not encoded below (yet).
  32  *
  33  * 24xx does not support programmable sleep dependencies (SLEEPDEP)
  34  *
  35  */
  36
  37 /*
  38  * The names for the DSP/IVA2 powerdomains are confusing.
  39  *
  40  * Most OMAP chips have an on-board DSP.
  41  *
  42  * On the 2420, this is a 'C55 DSP called, simply, the DSP.  Its
  43  * powerdomain is called the "DSP power domain."  On the 2430, the
  44  * on-board DSP is a 'C64 DSP, now called the IVA2 or IVA2.1.  Its
  45  * powerdomain is still called the "DSP power domain."  On the 3430,
  46  * the DSP is a 'C64 DSP like the 2430, also known as the IVA2; but
  47  * its powerdomain is now called the "IVA2 power domain."
  48  *
  49  * The 2420 also has something called the IVA, which is a separate ARM
  50  * core, and has nothing to do with the DSP/IVA2.
  51  *
  52  * Ideally the DSP/IVA2 could just be the same powerdomain, but the PRCM
  53  * address offset is different between the C55 and C64 DSPs.
  54  *
  55  * The overly-specific dep_bit names are due to a bit name collision
  56  * with CM_FCLKEN_{DSP,IVA2}.  The DSP/IVA2 PM_WKDEP and CM_SLEEPDEP shift
  57  * value are the same for all powerdomains: 2
  58  */
  59
  60 /*
  61  * XXX should dep_bit be a mask, so we can test to see if it is 0 as a
  62  * sanity check?
  63  * XXX encode hardware fixed wakeup dependencies -- esp. for 3430 CORE
  64  */
  65
  66 #include <mach/powerdomain.h>
  67
  68 #include "prcm-common.h"
  69 #include "prm.h"
  70 #include "cm.h"
  71
  72 /* OMAP2/3-common powerdomains and wakeup dependencies */
  73
  74 /*
  75  * 2420/2430 PM_WKDEP_GFX: CORE, MPU, WKUP
  76  * 3430ES1 PM_WKDEP_GFX: adds IVA2, removes CORE
  77  * 3430ES2 PM_WKDEP_SGX: adds IVA2, removes CORE
  78  */
  79 static struct pwrdm_dep gfx_sgx_wkdeps[] = {
  80         {
  81                 .pwrdm_name = "core_pwrdm",
  82                 .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP24XX)
  83         },
  84         {
  85                 .pwrdm_name = "iva2_pwrdm",
  86                 .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430)
  87         },
  88         {
  89                 .pwrdm_name = "mpu_pwrdm",
  90                 .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP24XX |
  91                                             CHIP_IS_OMAP3430)
  92         },
  93         {
  94                 .pwrdm_name = "wkup_pwrdm",
  95                 .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP24XX |
  96                                             CHIP_IS_OMAP3430)
  97         },
  98         { NULL },
  99 };
 100
 101 /*
 102  * 3430: CM_SLEEPDEP_CAM: MPU
 103  * 3430ES1: CM_SLEEPDEP_GFX: MPU
 104  * 3430ES2: CM_SLEEPDEP_SGX: MPU
 105  */
 106 static struct pwrdm_dep cam_gfx_sleepdeps[] = {
 107         {
 108                 .pwrdm_name = "mpu_pwrdm",
 109                 .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430)
 110         },
 111         { NULL },
 112 };
 113
 114
 115 #include "powerdomains24xx.h"
 116 #include "powerdomains34xx.h"
 117
 118
 119 /*
 120  * OMAP2/3 common powerdomains
 121  */
 122
 123 /*
 124  * The GFX powerdomain is not present on 3430ES2, but currently we do not
 125  * have a macro to filter it out at compile-time.
 126  */
 127 static struct powerdomain gfx_pwrdm = {
 128         .name             = "gfx_pwrdm",
 129         .prcm_offs        = GFX_MOD,
 130         .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP24XX |
 131                                            CHIP_IS_OMAP3430ES1),
 132         .wkdep_srcs       = gfx_sgx_wkdeps,
 133         .sleepdep_srcs    = cam_gfx_sleepdeps,
 134         .pwrsts           = PWRSTS_OFF_RET_ON,
 135         .pwrsts_logic_ret = PWRDM_POWER_RET,
 136         .banks            = 1,
 137         .pwrsts_mem_ret   = {
 138                 [0] = PWRDM_POWER_RET, /* MEMRETSTATE */
 139         },
 140         .pwrsts_mem_on    = {
 141                 [0] = PWRDM_POWER_ON,  /* MEMONSTATE */
 142         },
 143 };
 144
 145 static struct powerdomain wkup_pwrdm = {
 146         .name           = "wkup_pwrdm",
 147         .prcm_offs      = WKUP_MOD,
 148         .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP24XX | CHIP_IS_OMAP3430),
 149         .dep_bit        = OMAP_EN_WKUP_SHIFT,
 150 };
 151
 152
 153
 154 /* As powerdomains are added or removed above, this list must also be changed */
 155 static struct powerdomain *powerdomains_omap[] __initdata = {
 156
 157         &gfx_pwrdm,
 158         &wkup_pwrdm,
 159
 160 #ifdef CONFIG_ARCH_OMAP24XX
 161         &dsp_pwrdm,
 162         &mpu_24xx_pwrdm,
 163         &core_24xx_pwrdm,
 164 #endif
 165
 166 #ifdef CONFIG_ARCH_OMAP2430
 167         &mdm_pwrdm,
 168 #endif
 169
 170 #ifdef CONFIG_ARCH_OMAP34XX
 171         &iva2_pwrdm,
 172         &mpu_34xx_pwrdm,
 173         &neon_pwrdm,
 174         &core_34xx_pwrdm,
 175         &cam_pwrdm,
 176         &dss_pwrdm,
 177         &per_pwrdm,
 178         &emu_pwrdm,
 179         &sgx_pwrdm,
 180         &usbhost_pwrdm,
 181 #endif
 182
 183         NULL
 184 };
 185
 186
 187 #endif