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x86, olpc-xo1-sci: Propagate power supply/battery events

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EC events indicate change in AC power connectivity, battery state of
charge, battery error, battery presence, etc. Send notifications to
the power supply subsystem when changes are detected.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Link: http://lkml.kernel.org/r/1309019658-1712-10-git-send-email-dsd@laptop.org
Acked-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Daniel Drake 2011-06-25 17:34:16 +01:00 committed by H. Peter Anvin
parent 2cf2baea10
commit e1040ac693
2 changed files with 40 additions and 1 deletions
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4
arch/x86/Kconfig
View File

@ -2082,7 +2082,7 @@ config OLPC_XO1_PM
config OLPC_XO1_SCI
bool "OLPC XO-1 SCI extras"
depends on OLPC && OLPC_XO1_PM
depends on OLPC && OLPC_XO1_PM && POWER_SUPPLY
select GPIO_CS5535
select MFD_CORE
---help---
@ -2091,6 +2091,8 @@ config OLPC_XO1_SCI
- Power button
- Ebook switch
- Lid switch
- AC adapter status updates
- Battery status updates
endif # X86_32

37
arch/x86/platform/olpc/olpc-xo1-sci.c
View File

@ -19,6 +19,7 @@
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/mfd/core.h>
#include <linux/power_supply.h>
#include <linux/suspend.h>
#include <linux/workqueue.h>
@ -52,6 +53,26 @@ static const char * const lid_wake_mode_names[] = {
[LID_WAKE_CLOSE] = "close",
};
static void battery_status_changed(void)
{
struct power_supply *psy = power_supply_get_by_name("olpc-battery");
if (psy) {
power_supply_changed(psy);
put_device(psy->dev);
}
}
static void ac_status_changed(void)
{
struct power_supply *psy = power_supply_get_by_name("olpc-ac");
if (psy) {
power_supply_changed(psy);
put_device(psy->dev);
}
}
/* Report current ebook switch state through input layer */
static void send_ebook_state(void)
{
@ -151,6 +172,18 @@ static void process_sci_queue(bool propagate_events)
pr_debug(PFX "SCI 0x%x received\n", data);
switch (data) {
case EC_SCI_SRC_BATERR:
case EC_SCI_SRC_BATSOC:
case EC_SCI_SRC_BATTERY:
case EC_SCI_SRC_BATCRIT:
battery_status_changed();
break;
case EC_SCI_SRC_ACPWR:
ac_status_changed();
break;
}
if (data == EC_SCI_SRC_EBOOK && propagate_events)
send_ebook_state();
} while (data);
@ -240,6 +273,10 @@ static int xo1_sci_resume(struct platform_device *pdev)
/* Enable all EC events */
olpc_ec_mask_write(EC_SCI_SRC_ALL);
/* Power/battery status might have changed too */
battery_status_changed();
ac_status_changed();
return 0;
}