LXR linux/arch/arm/mach-omap2/powerdomain-common.c

   1/*
   2 * Common powerdomain framework functions
   3 *
   4 * Copyright (C) 2010-2011 Texas Instruments, Inc.
   5 * Copyright (C) 2010 Nokia Corporation
   6 *
   7 * Derived from mach-omap2/powerdomain.c written by 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
  14#include <linux/errno.h>
  15#include <linux/kernel.h>
  16#include <linux/bug.h>
  17#include "pm.h"
  18#include "cm.h"
  19#include "cm-regbits-34xx.h"
  20#include "cm-regbits-44xx.h"
  21#include "prm-regbits-34xx.h"
  22#include "prm-regbits-44xx.h"
  23
  24/*
  25 * OMAP3 and OMAP4 specific register bit initialisations
  26 * Notice that the names here are not according to each power
  27 * domain but the bit mapping used applies to all of them
  28 */
  29/* OMAP3 and OMAP4 Memory Onstate Masks (common across all power domains) */
  30#define OMAP_MEM0_ONSTATE_MASK OMAP3430_SHAREDL1CACHEFLATONSTATE_MASK
  31#define OMAP_MEM1_ONSTATE_MASK OMAP3430_L1FLATMEMONSTATE_MASK
  32#define OMAP_MEM2_ONSTATE_MASK OMAP3430_SHAREDL2CACHEFLATONSTATE_MASK
  33#define OMAP_MEM3_ONSTATE_MASK OMAP3430_L2FLATMEMONSTATE_MASK
  34#define OMAP_MEM4_ONSTATE_MASK OMAP4430_OCP_NRET_BANK_ONSTATE_MASK
  35
  36/* OMAP3 and OMAP4 Memory Retstate Masks (common across all power domains) */
  37#define OMAP_MEM0_RETSTATE_MASK OMAP3430_SHAREDL1CACHEFLATRETSTATE_MASK
  38#define OMAP_MEM1_RETSTATE_MASK OMAP3430_L1FLATMEMRETSTATE_MASK
  39#define OMAP_MEM2_RETSTATE_MASK OMAP3430_SHAREDL2CACHEFLATRETSTATE_MASK
  40#define OMAP_MEM3_RETSTATE_MASK OMAP3430_L2FLATMEMRETSTATE_MASK
  41#define OMAP_MEM4_RETSTATE_MASK OMAP4430_OCP_NRET_BANK_RETSTATE_MASK
  42
  43/* OMAP3 and OMAP4 Memory Status bits */
  44#define OMAP_MEM0_STATEST_MASK OMAP3430_SHAREDL1CACHEFLATSTATEST_MASK
  45#define OMAP_MEM1_STATEST_MASK OMAP3430_L1FLATMEMSTATEST_MASK
  46#define OMAP_MEM2_STATEST_MASK OMAP3430_SHAREDL2CACHEFLATSTATEST_MASK
  47#define OMAP_MEM3_STATEST_MASK OMAP3430_L2FLATMEMSTATEST_MASK
  48#define OMAP_MEM4_STATEST_MASK OMAP4430_OCP_NRET_BANK_STATEST_MASK
  49
  50/* Common Internal functions used across OMAP rev's*/
  51u32 omap2_pwrdm_get_mem_bank_onstate_mask(u8 bank)
  52{
  53        switch (bank) {
  54        case 0:
  55                return OMAP_MEM0_ONSTATE_MASK;
  56        case 1:
  57                return OMAP_MEM1_ONSTATE_MASK;
  58        case 2:
  59                return OMAP_MEM2_ONSTATE_MASK;
  60        case 3:
  61                return OMAP_MEM3_ONSTATE_MASK;
  62        case 4:
  63                return OMAP_MEM4_ONSTATE_MASK;
  64        default:
  65                WARN_ON(1); /* should never happen */
  66                return -EEXIST;
  67        }
  68        return 0;
  69}
  70
  71u32 omap2_pwrdm_get_mem_bank_retst_mask(u8 bank)
  72{
  73        switch (bank) {
  74        case 0:
  75                return OMAP_MEM0_RETSTATE_MASK;
  76        case 1:
  77                return OMAP_MEM1_RETSTATE_MASK;
  78        case 2:
  79                return OMAP_MEM2_RETSTATE_MASK;
  80        case 3:
  81                return OMAP_MEM3_RETSTATE_MASK;
  82        case 4:
  83                return OMAP_MEM4_RETSTATE_MASK;
  84        default:
  85                WARN_ON(1); /* should never happen */
  86                return -EEXIST;
  87        }
  88        return 0;
  89}
  90
  91u32 omap2_pwrdm_get_mem_bank_stst_mask(u8 bank)
  92{
  93        switch (bank) {
  94        case 0:
  95                return OMAP_MEM0_STATEST_MASK;
  96        case 1:
  97                return OMAP_MEM1_STATEST_MASK;
  98        case 2:
  99                return OMAP_MEM2_STATEST_MASK;
 100        case 3:
 101                return OMAP_MEM3_STATEST_MASK;
 102        case 4:
 103                return OMAP_MEM4_STATEST_MASK;
 104        default:
 105                WARN_ON(1); /* should never happen */
 106                return -EEXIST;
 107        }
 108        return 0;
 109}
 110
 111