63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
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/*
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* OMAP2 and OMAP3 powerdomain control
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*
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* Copyright (C) 2009-2010 Texas Instruments, Inc.
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* Copyright (C) 2007-2009 Nokia Corporation
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*
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* Derived from mach-omap2/powerdomain.c written by Paul Walmsley
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* Rajendra Nayak <rnayak@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/io.h>
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#include <linux/errno.h>
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#include <linux/delay.h>
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#include <plat/prcm.h>
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#include "prm.h"
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#include "prm-regbits-34xx.h"
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#include "powerdomains.h"
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/* Common functions across OMAP2 and OMAP3 */
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static int omap2_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
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{
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prm_rmw_mod_reg_bits(OMAP_POWERSTATE_MASK,
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(pwrst << OMAP_POWERSTATE_SHIFT),
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pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL);
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return 0;
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}
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static int omap2_pwrdm_read_next_pwrst(struct powerdomain *pwrdm)
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{
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return prm_read_mod_bits_shift(pwrdm->prcm_offs,
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OMAP2_PM_PWSTCTRL, OMAP_POWERSTATE_MASK);
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}
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static int omap2_pwrdm_read_pwrst(struct powerdomain *pwrdm)
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{
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return prm_read_mod_bits_shift(pwrdm->prcm_offs,
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OMAP2_PM_PWSTST, OMAP_POWERSTATEST_MASK);
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}
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/* Applicable only for OMAP3. Not supported on OMAP2 */
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static int omap3_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
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{
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return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP3430_PM_PREPWSTST,
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OMAP3430_LASTPOWERSTATEENTERED_MASK);
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}
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struct pwrdm_ops omap2_pwrdm_operations = {
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.pwrdm_set_next_pwrst = omap2_pwrdm_set_next_pwrst,
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.pwrdm_read_next_pwrst = omap2_pwrdm_read_next_pwrst,
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.pwrdm_read_pwrst = omap2_pwrdm_read_pwrst,
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};
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struct pwrdm_ops omap3_pwrdm_operations = {
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.pwrdm_set_next_pwrst = omap2_pwrdm_set_next_pwrst,
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.pwrdm_read_next_pwrst = omap2_pwrdm_read_next_pwrst,
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.pwrdm_read_pwrst = omap2_pwrdm_read_pwrst,
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.pwrdm_read_prev_pwrst = omap3_pwrdm_read_prev_pwrst,
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};
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