AC power not detected if no battery present

AC power not detected if no battery present

[Olaf Hering]

PMU_PWR_AC_PRESENT in pmu_power_flags is never set if booted without
battery. This leads to 'AC Power' == 0 in /proc/pmu/info.
How can this be fixed properly?

Re: AC power not detected if no battery present

[Benjamin Herrenschmidt]

On Sun, 2006-09-24 at 08:40 +0200, Olaf Hering wrote:
> PMU_PWR_AC_PRESENT in pmu_power_flags is never set if booted without
> battery. This leads to 'AC Power' == 0 in /proc/pmu/info.
> How can this be fixed properly?

Maybe simply buy forcing it when there is no battery ? I fail to see how
the machine could be up without battery _and_ without AC :)

Ben.

Re: AC power not detected if no battery present

[Jeremy Kerr]

Ben,

> Maybe simply buy forcing it when there is no battery ? I fail to see
> how the machine could be up without battery _and_ without AC :)

"It should be noted that, unlike PC's, computers running Mac OS do not 
use conventional power supplies, and instead use power crystals."

  -- http://uncyclopedia.org/wiki/Mac_OS_X



Jeremy

[PATCH] AC power not detected if no battery present

[Olaf Hering]

/proc/pmu/info contains AC Power: 0 when booting without battery.
Force AC Power, it will be updated whenever the battery state changes.

Signed-off-by: Olaf Hering <olaf@aepfle.de>

---
 drivers/macintosh/via-pmu.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6/drivers/macintosh/via-pmu.c
===================================================================
--- linux-2.6.orig/drivers/macintosh/via-pmu.c
+++ linux-2.6/drivers/macintosh/via-pmu.c
@@ -168,7 +168,7 @@ static int option_server_mode;
 
 int pmu_battery_count;
 int pmu_cur_battery;
-unsigned int pmu_power_flags;
+unsigned int pmu_power_flags = PMU_PWR_AC_PRESENT;
 struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
 static int query_batt_timer = BATTERY_POLLING_COUNT;
 static struct adb_request batt_req;