zaurus suspend saga: 2.6.32-rc3

zaurus suspend saga: 2.6.32-rc3

[Pavel Machek]

Hi!

I'm using patch similar to this for debugging:

...and good news is that it blinks after pressing of power button.

...core > pm_test also works.

I also verified that end of pxa_pm_enter() is reached (with similar
blinking patch). End of corgi_pxa_pm_enter() seems to be reached, too.

Any ideas what to try next?
								Pavel

--- arm.ofic//mach-pxa/pm.c	2009-09-10 00:13:59.000000000 +0200
+++ arm/mach-pxa/pm.c	2009-10-07 14:21:21.000000000 +0200
@@ -14,7 +14,10 @@
 #include <linux/module.h>
 #include <linux/suspend.h>
 #include <linux/errno.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
 
+#include <mach/spitz.h>
 #include <mach/pm.h>
 
 struct pxa_cpu_pm_fns *pxa_cpu_pm_fns;
@@ -41,6 +44,24 @@
 
 	/* *** go zzz *** */
 	pxa_cpu_pm_fns->enter(state);
+
+	gpio_set_value(SPITZ_GPIO_LED_GREEN, 0);
+	mdelay(100);
+	gpio_set_value(SPITZ_GPIO_LED_GREEN, 1);
+	mdelay(100);
+	gpio_set_value(SPITZ_GPIO_LED_GREEN, 0);
+	mdelay(100);
+	gpio_set_value(SPITZ_GPIO_LED_GREEN, 1);
+	mdelay(100);
+	gpio_set_value(SPITZ_GPIO_LED_GREEN, 0);
+	mdelay(100);
+	gpio_set_value(SPITZ_GPIO_LED_GREEN, 1);
+	mdelay(100);
+	gpio_set_value(SPITZ_GPIO_LED_GREEN, 0);
+	mdelay(100);
+	gpio_set_value(SPITZ_GPIO_LED_GREEN, 1);
+	mdelay(100);
+
 	cpu_init();
 
 	if (state != PM_SUSPEND_STANDBY) {

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

zaurus suspend saga: 2.6.32-rc3

[Robert Jarzmik]

Pavel Machek <pavel@ucw.cz> writes:

> Hi!
>
> I'm using patch similar to this for debugging:
>
> ...and good news is that it blinks after pressing of power button.
>
> ...core > pm_test also works.
>
> I also verified that end of pxa_pm_enter() is reached (with similar
> blinking patch). End of corgi_pxa_pm_enter() seems to be reached, too.
>
> Any ideas what to try next?
> 								Pavel

For the Mitac MIO A701 board, with a similar problem, I had :
 - removed almost all drivers (except screen and USB for control)
 - realized that the culprit was amongst drivers (which resumed in a loop in
 that time, should be the same now)
 - added some way to find which one failed (in my case, I chose morse code
 through the buzzer to "speak" the device's name)
 - found out the driver faulty code
 - fixed it
 - retried, cheered.

As soon as you reach a resumed screen, it becomes easier :)

That's a very tedious and long fight, good luck.

Cheers

--
Robert

zaurus suspend saga: 2.6.32-rc3

[Pavel Machek]

On Sun 2009-10-11 17:59:45, Robert Jarzmik wrote:
> Pavel Machek <pavel@ucw.cz> writes:
> 
> > Hi!
> >
> > I'm using patch similar to this for debugging:
> >
> > ...and good news is that it blinks after pressing of power button.
> >
> > ...core > pm_test also works.
> >
> > I also verified that end of pxa_pm_enter() is reached (with similar
> > blinking patch). End of corgi_pxa_pm_enter() seems to be reached, too.
> >
> > Any ideas what to try next?
> 
> For the Mitac MIO A701 board, with a similar problem, I had :
>  - removed almost all drivers (except screen and USB for control)
>  - realized that the culprit was amongst drivers (which resumed in a loop in
>  that time, should be the same now)

Seems like it is not that simple here;

suspend_enter():

	if (!error) {
		if (!suspend_test(TEST_CORE))
			error = suspend_ops->enter(state);
		sysdev_resume();
	}

[it reaches this point]
	arch_suspend_enable_irqs();
[but not this one]
	BUG_ON(irqs_disabled());

 Enable_cpus:
	enable_nonboot_cpus();

Do I have screaming irq or something?
									Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html