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OMAP: powerdomain: Arch specific funcs for state control 

Define the following architecture specific funtions for omap2/3/4
.pwrdm_set_next_pwrst
.pwrdm_read_next_pwrst
.pwrdm_read_pwrst
.pwrdm_read_prev_pwrst

Convert the platform-independent framework to call these functions.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
[paul@pwsan.com: remove remaining static allocations in powerdomains.h file;
 remove path in file header comments, rearranged Makefile changes]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Kevin Hilman <khilman@deeprootsystems.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>
hifive-unleashed-5.1
Rajendra Nayak 2010-12-21 20:01:18 -07:00 committed by Paul Walmsley
parent 3b1e8b21fc
commit f327e07b0e
6 changed files with 175 additions and 12 deletions
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7
arch/arm/mach-omap2/Makefile
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@ -79,7 +79,12 @@ obj-$(CONFIG_ARCH_OMAP4) += prcm.o cm4xxx.o
# OMAP powerdomain framework
powerdomain-common += powerdomain.o powerdomains_data.o
obj-y += $(powerdomain-common)
obj-$(CONFIG_ARCH_OMAP2) += $(powerdomain-common) \
powerdomain2xxx_3xxx.o
obj-$(CONFIG_ARCH_OMAP3) += $(powerdomain-common) \
powerdomain2xxx_3xxx.o
obj-$(CONFIG_ARCH_OMAP4) += $(powerdomain-common) \
powerdomain44xx.o
# Clock framework
obj-$(CONFIG_ARCH_OMAP2) += $(clock-common) clock2xxx.o \

33
arch/arm/mach-omap2/powerdomain.c
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@ -439,6 +439,8 @@ int pwrdm_get_mem_bank_count(struct powerdomain *pwrdm)
*/
int pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
{
int ret = -EINVAL;
if (!pwrdm)
return -EINVAL;
@ -448,11 +450,10 @@ int pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
pr_debug("powerdomain: setting next powerstate for %s to %0x\n",
pwrdm->name, pwrst);
prm_rmw_mod_reg_bits(OMAP_POWERSTATE_MASK,
(pwrst << OMAP_POWERSTATE_SHIFT),
pwrdm->prcm_offs, pwrstctrl_reg_offs);
if (arch_pwrdm && arch_pwrdm->pwrdm_set_next_pwrst)
ret = arch_pwrdm->pwrdm_set_next_pwrst(pwrdm, pwrst);
return 0;
return ret;
}
/**
@ -465,11 +466,15 @@ int pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
*/
int pwrdm_read_next_pwrst(struct powerdomain *pwrdm)
{
int ret = -EINVAL;
if (!pwrdm)
return -EINVAL;
return prm_read_mod_bits_shift(pwrdm->prcm_offs,
pwrstctrl_reg_offs, OMAP_POWERSTATE_MASK);
if (arch_pwrdm && arch_pwrdm->pwrdm_read_next_pwrst)
ret = arch_pwrdm->pwrdm_read_next_pwrst(pwrdm);
return ret;
}
/**
@ -482,11 +487,15 @@ int pwrdm_read_next_pwrst(struct powerdomain *pwrdm)
*/
int pwrdm_read_pwrst(struct powerdomain *pwrdm)
{
int ret = -EINVAL;
if (!pwrdm)
return -EINVAL;
return prm_read_mod_bits_shift(pwrdm->prcm_offs,
pwrstst_reg_offs, OMAP_POWERSTATEST_MASK);
if (arch_pwrdm && arch_pwrdm->pwrdm_read_pwrst)
ret = arch_pwrdm->pwrdm_read_pwrst(pwrdm);
return ret;
}
/**
@ -499,11 +508,15 @@ int pwrdm_read_pwrst(struct powerdomain *pwrdm)
*/
int pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
{
int ret = -EINVAL;
if (!pwrdm)
return -EINVAL;
return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP3430_PM_PREPWSTST,
OMAP3430_LASTPOWERSTATEENTERED_MASK);
if (arch_pwrdm && arch_pwrdm->pwrdm_read_prev_pwrst)
ret = arch_pwrdm->pwrdm_read_prev_pwrst(pwrdm);
return ret;
}
/**

62
arch/arm/mach-omap2/powerdomain2xxx_3xxx.c 100644
View File

@ -0,0 +1,62 @@
/*
* 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,
};

55
arch/arm/mach-omap2/powerdomain44xx.c 100644
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@ -0,0 +1,55 @@
/*
* 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);
}
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,
};

22
arch/arm/mach-omap2/powerdomains.h 100644
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@ -0,0 +1,22 @@
/*
* OMAP2+ powerdomain prototypes
*
* Copyright (C) 2010 Texas Instruments, Inc.
*
* 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.
*/
#ifndef ARCH_ARM_MACH_OMAP2_POWERDOMAINS
#define ARCH_ARM_MACH_OMAP2_POWERDOMAINS
#include <plat/powerdomain.h>
extern struct pwrdm_ops omap2_pwrdm_operations;
extern struct pwrdm_ops omap3_pwrdm_operations;
extern struct pwrdm_ops omap4_pwrdm_operations;
#endif /* ARCH_ARM_MACH_OMAP2_POWERDOMAINS */

8
arch/arm/mach-omap2/powerdomains_data.c
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@ -55,6 +55,7 @@
#include "powerdomains24xx.h"
#include "powerdomains34xx.h"
#include "powerdomains44xx.h"
#include "powerdomains.h"
/* OMAP2/3-common powerdomains */
@ -149,5 +150,10 @@ static struct powerdomain *powerdomains_omap[] __initdata = {
void pwrdm_fw_init(void)
{
pwrdm_init(powerdomains_omap, NULL);
if (cpu_is_omap24xx())
pwrdm_init(powerdomains_omap, &omap2_pwrdm_operations);
else if (cpu_is_omap34xx())
pwrdm_init(powerdomains_omap, &omap3_pwrdm_operations);
else if (cpu_is_omap44xx())
pwrdm_init(powerdomains_omap, &omap4_pwrdm_operations);
}