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If no AC line devices are found, go ahead and notify devd that the system

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is on AC power (i.e. not a laptop).  This allows power_profile to run once
for desktop systems as well, for instance, to set C3 or CPU frequency.

MFC after:	2 weeks
This commit is contained in:
Nate Lawson 2005-10-24 05:34:21 +00:00
parent 7dcb6ea4f6
commit 895e60b801
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=151610
1 changed files with 18 additions and 0 deletions
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18
sys/dev/acpica/acpi_acad.c
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@ -66,6 +66,7 @@ static int acpi_acad_attach(device_t);
static int acpi_acad_ioctl(u_long, caddr_t, void *);
static int acpi_acad_sysctl(SYSCTL_HANDLER_ARGS);
static void acpi_acad_init_acline(void *arg);
static void acpi_acad_ac_only(void *arg);
static device_method_t acpi_acad_methods[] = {
/* Device interface */
@ -87,6 +88,8 @@ MODULE_DEPEND(acpi_acad, acpi, 1, 1, 1);
ACPI_SERIAL_DECL(acad, "ACPI AC adapter");
SYSINIT(acad, SI_SUB_KTHREAD_IDLE, SI_ORDER_FIRST, acpi_acad_ac_only, NULL);
static void
acpi_acad_get_status(void *context)
{
@ -244,6 +247,21 @@ acpi_acad_init_acline(void *arg)
"acline initialization done, tried %d times\n", retry + 1);
}
/*
* If no AC line devices detected after boot, create an "online" event
* so that userland code can adjust power settings accordingly. The default
* power profile is "performance" so we don't need to repeat that here.
*/
static void
acpi_acad_ac_only(void __unused *arg)
{
if (devclass_get_count(acpi_acad_devclass) > 0)
return;
acpi_UserNotify("ACAD", ACPI_ROOT_OBJECT, 1);
}
/*
* Public interfaces.
*/