6e01478ae8
Static data should be declared in .c files, not .h files. It should be possible to #include .h files at any point without creating multiple copies of the same data. We converted the clock data to .c files some time ago. This patch does the same for the powerdomain data. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Rajendra Nayak <rnayak@ti.com> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com> Reviewed-by: Kevin Hilman <khilman@deeprootsystems.com> Tested-by: Kevin Hilman <khilman@deeprootsystems.com> Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Tested-by: Rajendra Nayak <rnayak@ti.com>
176 lines
4.7 KiB
C
176 lines
4.7 KiB
C
/*
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* OMAP4 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/powerdomain.h>
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#include <plat/prcm.h>
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#include "prm.h"
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#include "prm-regbits-44xx.h"
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#include "powerdomains.h"
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static int omap4_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, OMAP4_PM_PWSTCTRL);
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return 0;
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}
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static int omap4_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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OMAP4_PM_PWSTCTRL, OMAP_POWERSTATE_MASK);
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}
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static int omap4_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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OMAP4_PM_PWSTST, OMAP_POWERSTATEST_MASK);
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}
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static int omap4_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
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{
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return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP4_PM_PWSTST,
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OMAP4430_LASTPOWERSTATEENTERED_MASK);
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}
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static int omap4_pwrdm_set_lowpwrstchange(struct powerdomain *pwrdm)
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{
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prm_rmw_mod_reg_bits(OMAP4430_LOWPOWERSTATECHANGE_MASK,
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(1 << OMAP4430_LOWPOWERSTATECHANGE_SHIFT),
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pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL);
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return 0;
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}
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static int omap4_pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm)
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{
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prm_rmw_mod_reg_bits(OMAP4430_LASTPOWERSTATEENTERED_MASK,
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OMAP4430_LASTPOWERSTATEENTERED_MASK,
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pwrdm->prcm_offs, OMAP4_PM_PWSTST);
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return 0;
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}
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static int omap4_pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst)
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{
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u32 v;
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v = pwrst << __ffs(OMAP4430_LOGICRETSTATE_MASK);
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prm_rmw_mod_reg_bits(OMAP4430_LOGICRETSTATE_MASK, v,
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pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL);
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return 0;
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}
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static int omap4_pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank,
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u8 pwrst)
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{
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u32 m;
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m = omap2_pwrdm_get_mem_bank_onstate_mask(bank);
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prm_rmw_mod_reg_bits(m, (pwrst << __ffs(m)), pwrdm->prcm_offs,
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OMAP4_PM_PWSTCTRL);
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return 0;
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}
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static int omap4_pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank,
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u8 pwrst)
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{
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u32 m;
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m = omap2_pwrdm_get_mem_bank_retst_mask(bank);
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prm_rmw_mod_reg_bits(m, (pwrst << __ffs(m)), pwrdm->prcm_offs,
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OMAP4_PM_PWSTCTRL);
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return 0;
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}
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static int omap4_pwrdm_read_logic_pwrst(struct powerdomain *pwrdm)
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{
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return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP4_PM_PWSTST,
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OMAP4430_LOGICSTATEST_MASK);
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}
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static int omap4_pwrdm_read_logic_retst(struct powerdomain *pwrdm)
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{
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return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL,
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OMAP4430_LOGICRETSTATE_MASK);
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}
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static int omap4_pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
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{
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u32 m;
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m = omap2_pwrdm_get_mem_bank_stst_mask(bank);
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return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP4_PM_PWSTST, m);
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}
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static int omap4_pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank)
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{
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u32 m;
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m = omap2_pwrdm_get_mem_bank_retst_mask(bank);
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return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL, m);
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}
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static int omap4_pwrdm_wait_transition(struct powerdomain *pwrdm)
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{
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u32 c = 0;
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/*
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* REVISIT: pwrdm_wait_transition() may be better implemented
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* via a callback and a periodic timer check -- how long do we expect
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* powerdomain transitions to take?
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*/
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/* XXX Is this udelay() value meaningful? */
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while ((prm_read_mod_reg(pwrdm->prcm_offs, OMAP4_PM_PWSTST) &
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OMAP_INTRANSITION_MASK) &&
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(c++ < PWRDM_TRANSITION_BAILOUT))
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udelay(1);
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if (c > PWRDM_TRANSITION_BAILOUT) {
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printk(KERN_ERR "powerdomain: waited too long for "
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"powerdomain %s to complete transition\n", pwrdm->name);
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return -EAGAIN;
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}
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pr_debug("powerdomain: completed transition in %d loops\n", c);
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return 0;
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}
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struct pwrdm_ops omap4_pwrdm_operations = {
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.pwrdm_set_next_pwrst = omap4_pwrdm_set_next_pwrst,
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.pwrdm_read_next_pwrst = omap4_pwrdm_read_next_pwrst,
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.pwrdm_read_pwrst = omap4_pwrdm_read_pwrst,
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.pwrdm_read_prev_pwrst = omap4_pwrdm_read_prev_pwrst,
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.pwrdm_set_lowpwrstchange = omap4_pwrdm_set_lowpwrstchange,
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.pwrdm_clear_all_prev_pwrst = omap4_pwrdm_clear_all_prev_pwrst,
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.pwrdm_set_logic_retst = omap4_pwrdm_set_logic_retst,
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.pwrdm_read_logic_pwrst = omap4_pwrdm_read_logic_pwrst,
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.pwrdm_read_logic_retst = omap4_pwrdm_read_logic_retst,
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.pwrdm_read_mem_pwrst = omap4_pwrdm_read_mem_pwrst,
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.pwrdm_read_mem_retst = omap4_pwrdm_read_mem_retst,
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.pwrdm_set_mem_onst = omap4_pwrdm_set_mem_onst,
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.pwrdm_set_mem_retst = omap4_pwrdm_set_mem_retst,
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.pwrdm_wait_transition = omap4_pwrdm_wait_transition,
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};
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