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

   1 /*
   2  *  linux/arch/arm/mach-omap2/powerdomain-common.c
   3  *  Contains common powerdomain framework functions
   4  *
   5  *  Copyright (C) 2010 Texas Instruments, Inc.
   6  *  Copyright (C) 2010 Nokia Corporation
   7  *
   8  * Derived from mach-omap2/powerdomain.c written by Paul Walmsley
   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 #include <linux/errno.h>
  16 #include <linux/kernel.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*/
  51 u32 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
  71 u32 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
  91 u32 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