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kernel/linux-imx6_3.14.28/arch/arm/mach-omap2/powerdomain-common.c 3.09 KB
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  /*
   * Common powerdomain framework functions
   *
   * Copyright (C) 2010-2011 Texas Instruments, Inc.
   * Copyright (C) 2010 Nokia Corporation
   *
   * Derived from mach-omap2/powerdomain.c written by Paul Walmsley
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   */
  
  #include <linux/errno.h>
  #include <linux/kernel.h>
  #include <linux/bug.h>
  #include "pm.h"
  #include "cm.h"
  #include "cm-regbits-34xx.h"
  #include "cm-regbits-44xx.h"
  #include "prm-regbits-34xx.h"
  #include "prm-regbits-44xx.h"
  
  /*
   * OMAP3 and OMAP4 specific register bit initialisations
   * Notice that the names here are not according to each power
   * domain but the bit mapping used applies to all of them
   */
  /* OMAP3 and OMAP4 Memory Onstate Masks (common across all power domains) */
  #define OMAP_MEM0_ONSTATE_MASK OMAP3430_SHAREDL1CACHEFLATONSTATE_MASK
  #define OMAP_MEM1_ONSTATE_MASK OMAP3430_L1FLATMEMONSTATE_MASK
  #define OMAP_MEM2_ONSTATE_MASK OMAP3430_SHAREDL2CACHEFLATONSTATE_MASK
  #define OMAP_MEM3_ONSTATE_MASK OMAP3430_L2FLATMEMONSTATE_MASK
  #define OMAP_MEM4_ONSTATE_MASK OMAP4430_OCP_NRET_BANK_ONSTATE_MASK
  
  /* OMAP3 and OMAP4 Memory Retstate Masks (common across all power domains) */
  #define OMAP_MEM0_RETSTATE_MASK OMAP3430_SHAREDL1CACHEFLATRETSTATE_MASK
  #define OMAP_MEM1_RETSTATE_MASK OMAP3430_L1FLATMEMRETSTATE_MASK
  #define OMAP_MEM2_RETSTATE_MASK OMAP3430_SHAREDL2CACHEFLATRETSTATE_MASK
  #define OMAP_MEM3_RETSTATE_MASK OMAP3430_L2FLATMEMRETSTATE_MASK
  #define OMAP_MEM4_RETSTATE_MASK OMAP4430_OCP_NRET_BANK_RETSTATE_MASK
  
  /* OMAP3 and OMAP4 Memory Status bits */
  #define OMAP_MEM0_STATEST_MASK OMAP3430_SHAREDL1CACHEFLATSTATEST_MASK
  #define OMAP_MEM1_STATEST_MASK OMAP3430_L1FLATMEMSTATEST_MASK
  #define OMAP_MEM2_STATEST_MASK OMAP3430_SHAREDL2CACHEFLATSTATEST_MASK
  #define OMAP_MEM3_STATEST_MASK OMAP3430_L2FLATMEMSTATEST_MASK
  #define OMAP_MEM4_STATEST_MASK OMAP4430_OCP_NRET_BANK_STATEST_MASK
  
  /* Common Internal functions used across OMAP rev's*/
  u32 omap2_pwrdm_get_mem_bank_onstate_mask(u8 bank)
  {
  	switch (bank) {
  	case 0:
  		return OMAP_MEM0_ONSTATE_MASK;
  	case 1:
  		return OMAP_MEM1_ONSTATE_MASK;
  	case 2:
  		return OMAP_MEM2_ONSTATE_MASK;
  	case 3:
  		return OMAP_MEM3_ONSTATE_MASK;
  	case 4:
  		return OMAP_MEM4_ONSTATE_MASK;
  	default:
  		WARN_ON(1); /* should never happen */
  		return -EEXIST;
  	}
  	return 0;
  }
  
  u32 omap2_pwrdm_get_mem_bank_retst_mask(u8 bank)
  {
  	switch (bank) {
  	case 0:
  		return OMAP_MEM0_RETSTATE_MASK;
  	case 1:
  		return OMAP_MEM1_RETSTATE_MASK;
  	case 2:
  		return OMAP_MEM2_RETSTATE_MASK;
  	case 3:
  		return OMAP_MEM3_RETSTATE_MASK;
  	case 4:
  		return OMAP_MEM4_RETSTATE_MASK;
  	default:
  		WARN_ON(1); /* should never happen */
  		return -EEXIST;
  	}
  	return 0;
  }
  
  u32 omap2_pwrdm_get_mem_bank_stst_mask(u8 bank)
  {
  	switch (bank) {
  	case 0:
  		return OMAP_MEM0_STATEST_MASK;
  	case 1:
  		return OMAP_MEM1_STATEST_MASK;
  	case 2:
  		return OMAP_MEM2_STATEST_MASK;
  	case 3:
  		return OMAP_MEM3_STATEST_MASK;
  	case 4:
  		return OMAP_MEM4_STATEST_MASK;
  	default:
  		WARN_ON(1); /* should never happen */
  		return -EEXIST;
  	}
  	return 0;
  }