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*/
  47 u32 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
  67 u32 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
  87 u32 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