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/*
* OMAP2 and OMAP3 powerdomain control
*
* Copyright (C) 2009-2010 Texas Instruments, Inc.
* Copyright (C) 2007-2009 Nokia Corporation
*
* Derived from mach-omap2/powerdomain.c written by Paul Walmsley
* Rajendra Nayak <rnayak@ti.com>
*
* 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/io.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <plat/prcm.h>
#include "prm.h"
#include "prm-regbits-34xx.h"
#include "powerdomains.h"
/* Common functions across OMAP2 and OMAP3 */
static int omap2_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
{
prm_rmw_mod_reg_bits(OMAP_POWERSTATE_MASK,
(pwrst << OMAP_POWERSTATE_SHIFT),
pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL);
return 0;
}
static int omap2_pwrdm_read_next_pwrst(struct powerdomain *pwrdm)
{
return prm_read_mod_bits_shift(pwrdm->prcm_offs,
OMAP2_PM_PWSTCTRL, OMAP_POWERSTATE_MASK);
}
static int omap2_pwrdm_read_pwrst(struct powerdomain *pwrdm)
{
return prm_read_mod_bits_shift(pwrdm->prcm_offs,
OMAP2_PM_PWSTST, OMAP_POWERSTATEST_MASK);
}
/* Applicable only for OMAP3. Not supported on OMAP2 */
static int omap3_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
{
return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP3430_PM_PREPWSTST,
OMAP3430_LASTPOWERSTATEENTERED_MASK);
}
struct pwrdm_ops omap2_pwrdm_operations = {
.pwrdm_set_next_pwrst = omap2_pwrdm_set_next_pwrst,
.pwrdm_read_next_pwrst = omap2_pwrdm_read_next_pwrst,
.pwrdm_read_pwrst = omap2_pwrdm_read_pwrst,
};
struct pwrdm_ops omap3_pwrdm_operations = {
.pwrdm_set_next_pwrst = omap2_pwrdm_set_next_pwrst,
.pwrdm_read_next_pwrst = omap2_pwrdm_read_next_pwrst,
.pwrdm_read_pwrst = omap2_pwrdm_read_pwrst,
.pwrdm_read_prev_pwrst = omap3_pwrdm_read_prev_pwrst,
};
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