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