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

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Common powerdomain framework functions
   4 *
   5 * Copyright (C) 2010-2011 Texas Instruments, Inc.
   6 * Copyright (C) 2010 Nokia Corporation
   7 *
   8 * Derived from mach-omap2/powerdomain.c written by Paul Walmsley
   9 */
  10
  11#include <linux/errno.h>
  12#include <linux/kernel.h>
  13#include <linux/bug.h>
  14#include "pm.h"
  15#include "cm.h"
  16#include "cm-regbits-34xx.h"
  17#include "prm-regbits-34xx.h"
  18#include "prm-regbits-44xx.h"
  19
  20/*
  21 * OMAP3 and OMAP4 specific register bit initialisations
  22 * Notice that the names here are not according to each power
  23 * domain but the bit mapping used applies to all of them
  24 */
  25/* OMAP3 and OMAP4 Memory Onstate Masks (common across all power domains) */
  26#define OMAP_MEM0_ONSTATE_MASK OMAP3430_SHAREDL1CACHEFLATONSTATE_MASK
  27#define OMAP_MEM1_ONSTATE_MASK OMAP3430_L1FLATMEMONSTATE_MASK
  28#define OMAP_MEM2_ONSTATE_MASK OMAP3430_SHAREDL2CACHEFLATONSTATE_MASK
  29#define OMAP_MEM3_ONSTATE_MASK OMAP3430_L2FLATMEMONSTATE_MASK
  30#define OMAP_MEM4_ONSTATE_MASK OMAP4430_OCP_NRET_BANK_ONSTATE_MASK
  31
  32/* OMAP3 and OMAP4 Memory Retstate Masks (common across all power domains) */
  33#define OMAP_MEM0_RETSTATE_MASK OMAP3430_SHAREDL1CACHEFLATRETSTATE_MASK
  34#define OMAP_MEM1_RETSTATE_MASK OMAP3430_L1FLATMEMRETSTATE_MASK
  35#define OMAP_MEM2_RETSTATE_MASK OMAP3430_SHAREDL2CACHEFLATRETSTATE_MASK
  36#define OMAP_MEM3_RETSTATE_MASK OMAP3430_L2FLATMEMRETSTATE_MASK
  37#define OMAP_MEM4_RETSTATE_MASK OMAP4430_OCP_NRET_BANK_RETSTATE_MASK
  38
  39/* OMAP3 and OMAP4 Memory Status bits */
  40#define OMAP_MEM0_STATEST_MASK OMAP3430_SHAREDL1CACHEFLATSTATEST_MASK
  41#define OMAP_MEM1_STATEST_MASK OMAP3430_L1FLATMEMSTATEST_MASK
  42#define OMAP_MEM2_STATEST_MASK OMAP3430_SHAREDL2CACHEFLATSTATEST_MASK
  43#define OMAP_MEM3_STATEST_MASK OMAP3430_L2FLATMEMSTATEST_MASK
  44#define OMAP_MEM4_STATEST_MASK OMAP4430_OCP_NRET_BANK_STATEST_MASK
  45
  46/* Common Internal functions used across OMAP rev's*/
  47u32 omap2_pwrdm_get_mem_bank_onstate_mask(u8 bank)
  48{
  49        switch (bank) {
  50        case 0:
  51                return OMAP_MEM0_ONSTATE_MASK;
  52        case 1:
  53                return OMAP_MEM1_ONSTATE_MASK;
  54        case 2:
  55                return OMAP_MEM2_ONSTATE_MASK;
  56        case 3:
  57                return OMAP_MEM3_ONSTATE_MASK;
  58        case 4:
  59                return OMAP_MEM4_ONSTATE_MASK;
  60        default:
  61                WARN_ON(1); /* should never happen */
  62                return -EEXIST;
  63        }
  64        return 0;
  65}
  66
  67u32 omap2_pwrdm_get_mem_bank_retst_mask(u8 bank)
  68{
  69        switch (bank) {
  70        case 0:
  71                return OMAP_MEM0_RETSTATE_MASK;
  72        case 1:
  73                return OMAP_MEM1_RETSTATE_MASK;
  74        case 2:
  75                return OMAP_MEM2_RETSTATE_MASK;
  76        case 3:
  77                return OMAP_MEM3_RETSTATE_MASK;
  78        case 4:
  79                return OMAP_MEM4_RETSTATE_MASK;
  80        default:
  81                WARN_ON(1); /* should never happen */
  82                return -EEXIST;
  83        }
  84        return 0;
  85}
  86
  87u32 omap2_pwrdm_get_mem_bank_stst_mask(u8 bank)
  88{
  89        switch (bank) {
  90        case 0:
  91                return OMAP_MEM0_STATEST_MASK;
  92        case 1:
  93                return OMAP_MEM1_STATEST_MASK;
  94        case 2:
  95                return OMAP_MEM2_STATEST_MASK;
  96        case 3:
  97                return OMAP_MEM3_STATEST_MASK;
  98        case 4:
  99                return OMAP_MEM4_STATEST_MASK;
 100        default:
 101                WARN_ON(1); /* should never happen */
 102                return -EEXIST;
 103        }
 104        return 0;
 105}
 106
 107