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OMAP: PM: Added suspend target state control to debugfs for OMAP3 

Target state can be read / programmed via files under:
  [debugfs]/pm_debug/[pwrdm]/suspend

Signed-off-by: Tero Kristo <tero.kristo@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
hifive-unleashed-5.1
Tero Kristo 2008-11-26 12:26:24 +02:00 committed by Kevin Hilman
parent 2811d6b323
commit 68d4778c70
3 changed files with 56 additions and 2 deletions
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31
arch/arm/mach-omap2/pm-debug.c
View File

@ -24,6 +24,7 @@
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/module.h>
#include <mach/clock.h>
#include <mach/board.h>
@ -484,10 +485,28 @@ int pm_dbg_regset_init(int reg_set)
return 0;
}
static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused)
static int pwrdm_suspend_get(void *data, u64 *val)
{
*val = omap3_pm_get_suspend_state((struct powerdomain *)data);
if (*val >= 0)
return 0;
return *val;
}
static int pwrdm_suspend_set(void *data, u64 val)
{
return omap3_pm_set_suspend_state((struct powerdomain *)data, (int)val);
}
DEFINE_SIMPLE_ATTRIBUTE(pwrdm_suspend_fops, pwrdm_suspend_get,
pwrdm_suspend_set, "%llu\n");
static int __init pwrdms_setup(struct powerdomain *pwrdm, void *dir)
{
int i;
s64 t;
struct dentry *d;
t = sched_clock();
@ -496,6 +515,14 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused)
pwrdm->timer = t;
if (strncmp(pwrdm->name, "dpll", 4) == 0)
return 0;
d = debugfs_create_dir(pwrdm->name, (struct dentry *)dir);
(void) debugfs_create_file("suspend", S_IRUGO|S_IWUSR, d,
(void *)pwrdm, &pwrdm_suspend_fops);
return 0;
}
@ -524,7 +551,7 @@ static int __init pm_dbg_init(void)
(void) debugfs_create_file("time", S_IRUGO,
d, (void *)DEBUG_FILE_TIMERS, &debug_fops);
pwrdm_for_each(pwrdms_setup, NULL);
pwrdm_for_each(pwrdms_setup, (void *)d);
pm_dbg_dir = debugfs_create_dir("registers", d);
if (IS_ERR(pm_dbg_dir))

3
arch/arm/mach-omap2/pm.h
View File

@ -13,6 +13,9 @@
#include <mach/powerdomain.h>
extern int omap3_pm_get_suspend_state(struct powerdomain *pwrdm);
extern int omap3_pm_set_suspend_state(struct powerdomain *pwrdm, int state);
#ifdef CONFIG_PM_DEBUG
extern void omap2_pm_dump(int mode, int resume, unsigned int us);
extern int omap2_pm_debug;

24
arch/arm/mach-omap2/pm34xx.c
View File

@ -664,6 +664,30 @@ static void __init prcm_setup_regs(void)
omap3_d2d_idle();
}
int omap3_pm_get_suspend_state(struct powerdomain *pwrdm)
{
struct power_state *pwrst;
list_for_each_entry(pwrst, &pwrst_list, node) {
if (pwrst->pwrdm == pwrdm)
return pwrst->next_state;
}
return -EINVAL;
}
int omap3_pm_set_suspend_state(struct powerdomain *pwrdm, int state)
{
struct power_state *pwrst;
list_for_each_entry(pwrst, &pwrst_list, node) {
if (pwrst->pwrdm == pwrdm) {
pwrst->next_state = state;
return 0;
}
}
return -EINVAL;
}
static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused)
{
struct power_state *pwrst;