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authorDaniel Drake <dsd@laptop.org>2011-06-25 17:34:16 +0100
committerH. Peter Anvin <hpa@linux.intel.com>2011-07-06 14:44:40 -0700
commite1040ac693bac19eaeafbd6c5fd24d9429b5eeb8 (patch)
treefad8ac00517137d31674f6999a8d662ef4af19d5 /arch/x86
parent2cf2baea103f0a3d68b0f989d28df66f16dbc834 (diff)
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x86, olpc-xo1-sci: Propagate power supply/battery events
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>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/Kconfig4
-rw-r--r--arch/x86/platform/olpc/olpc-xo1-sci.c37
2 files changed, 40 insertions, 1 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 350ccbb4d650..a6aefbbc5cbf 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -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
diff --git a/arch/x86/platform/olpc/olpc-xo1-sci.c b/arch/x86/platform/olpc/olpc-xo1-sci.c
index ad0670bca833..1d4c783d7325 100644
--- a/arch/x86/platform/olpc/olpc-xo1-sci.c
+++ b/arch/x86/platform/olpc/olpc-xo1-sci.c
@@ -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;
}