powerdomain-common.c

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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;
}