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Re: [PATCH 10/10] OMAP: PM: Added suspend target state control to debugfs for OMAP3

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Tony Lindgren <tony@xxxxxxxxxxx> writes:

> * Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx> [090813 19:54]:
>> From: Tero Kristo <tero.kristo@xxxxxxxxx>
>> 
>> Target state can be read / programmed via files under:
>>   [debugfs]/pm_debug/[pwrdm]/suspend
>
>
> Does this compile when CONFIG_DEBUG_FS is not set?
>

Yes.  The relevant code is added to a section that is already
wrapped by #ifdef CONFIG_DEBUG_FS.

Kevin

>
>> 
>> Signed-off-by: Tero Kristo <tero.kristo@xxxxxxxxx>
>> Signed-off-by: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
>> ---
>>  arch/arm/mach-omap2/pm-debug.c |   31 +++++++++++++++++++++++++++++--
>>  arch/arm/mach-omap2/pm.h       |    3 +++
>>  arch/arm/mach-omap2/pm34xx.c   |   24 ++++++++++++++++++++++++
>>  3 files changed, 56 insertions(+), 2 deletions(-)
>>  mode change 100755 => 100644 arch/arm/mach-omap2/pm-debug.c
>> 
>> diff --git a/arch/arm/mach-omap2/pm-debug.c b/arch/arm/mach-omap2/pm-debug.c
>> old mode 100755
>> new mode 100644
>> index 37b883b..eded6a4
>> --- a/arch/arm/mach-omap2/pm-debug.c
>> +++ b/arch/arm/mach-omap2/pm-debug.c
>> @@ -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>
>> @@ -478,10 +479,28 @@ 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();
>>  
>> @@ -490,6 +509,14 @@ 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;
>>  }
>>  
>> @@ -508,7 +535,7 @@ 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))
>> diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h
>> index 8fa8567..8400f57 100755
>> --- a/arch/arm/mach-omap2/pm.h
>> +++ b/arch/arm/mach-omap2/pm.h
>> @@ -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;
>> diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
>> index 331dfca..26f2aca 100644
>> --- a/arch/arm/mach-omap2/pm34xx.c
>> +++ b/arch/arm/mach-omap2/pm34xx.c
>> @@ -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;
>> -- 
>> 1.6.4
>> 
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