Shutdown after resume using power button

[Jordan Crouse]

On 07/07/07 16:07 -0400, Marcelo Tosatti wrote:
> On Sat, Jul 07, 2007 at 03:35:01PM -0400, Marcelo Tosatti wrote:
> > Hi folks,
> > 
> > I was reading olpc-pm.c while I stumbled across this code
> > 
> > 
> > static int olpc_pm_interrupt(int irq, void *id)
> > {
> >         uint32_t sts, gpe = 0;
> > 
> >         sts = inl(acpi_base + PM1_STS);
> >         outl(sts | 0xFFFF, acpi_base + PM1_STS);
> > 
> >         if (olpc_get_rev() >= OLPC_REV_B2) {
> >                 gpe = inl(acpi_base + PM_GPE0_STS);
> >                 outl(0xFFFFFFFF, acpi_base + PM_GPE0_STS);
> >         }
> > 
> >         if (sts & CS5536_PM_PWRBTN) {
> >                 input_report_key(pm_inputdev, KEY_POWER, 1);
> >                 input_sync(pm_inputdev);
> >                 /* Do we need to delay this (and hence schedule_work)? */
> >                 input_report_key(pm_inputdev, KEY_POWER, 0);
> >                 input_sync(pm_inputdev);
> >         }
> > 
> > So we report the KEY_POWER event down to userspace, which is probably
> > the reason why we're seeing the powerdown sequence being started.
> 
> Jordan,
> 
> I remember you mentioned that reading PM1_STS might be unreliable... 
> Can you shed more light into the issue?
 
Hmm - I don't remember that.  PM1_STS should be reliable at this point,
assuming nobody has touched it since we resumed.

Jordan

-- 
Jordan Crouse
Systems Software Development Engineer 
Advanced Micro Devices, Inc.