/*
* OMAP4 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/powerdomain.h>
#include <plat/prcm.h>
#include "prm.h"
#include "prm-regbits-44xx.h"
#include "powerdomains.h"
static int omap4_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
{
prm_rmw_mod_reg_bits(OMAP_POWERSTATE_MASK,
(pwrst << OMAP_POWERSTATE_SHIFT),
pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL);
return 0;
}
static int omap4_pwrdm_read_next_pwrst(struct powerdomain *pwrdm)
{
return prm_read_mod_bits_shift(pwrdm->prcm_offs,
OMAP4_PM_PWSTCTRL, OMAP_POWERSTATE_MASK);
}
static int omap4_pwrdm_read_pwrst(struct powerdomain *pwrdm)
{
return prm_read_mod_bits_shift(pwrdm->prcm_offs,
OMAP4_PM_PWSTST, OMAP_POWERSTATEST_MASK);
}
static int omap4_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
{
return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP4_PM_PWSTST,
OMAP4430_LASTPOWERSTATEENTERED_MASK);
}
static int omap4_pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst)
{
u32 v;
v = pwrst << __ffs(OMAP4430_LOGICRETSTATE_MASK);
prm_rmw_mod_reg_bits(OMAP4430_LOGICRETSTATE_MASK, v,
pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL);
return 0;
}
static int omap4_pwrdm_read_logic_pwrst(struct powerdomain *pwrdm)
{
return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP4_PM_PWSTST,
OMAP4430_LOGICSTATEST_MASK);
}
static int omap4_pwrdm_read_logic_retst(struct powerdomain *pwrdm)
{
return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL,
OMAP4430_LOGICRETSTATE_MASK);
}
struct pwrdm_ops omap4_pwrdm_operations = {
.pwrdm_set_next_pwrst = omap4_pwrdm_set_next_pwrst,
.pwrdm_read_next_pwrst = omap4_pwrdm_read_next_pwrst,
.pwrdm_read_pwrst = omap4_pwrdm_read_pwrst,
.pwrdm_read_prev_pwrst = omap4_pwrdm_read_prev_pwrst,
.pwrdm_set_logic_retst = omap4_pwrdm_set_logic_retst,
.pwrdm_read_logic_pwrst = omap4_pwrdm_read_logic_pwrst,
.pwrdm_read_logic_retst = omap4_pwrdm_read_logic_retst,
};
