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Commit e1040ac6 authored by Daniel Drake's avatar Daniel Drake Committed by H. Peter Anvin
Browse files

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: default avatarDaniel Drake <dsd@laptop.org>
Link: http://lkml.kernel.org/r/1309019658-1712-10-git-send-email-dsd@laptop.org


Acked-by: default avatarAndres Salomon <dilinger@queued.net>
Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
parent 2cf2baea

arch/x86/Kconfig

+3 −1
Original line number Diff line number Diff line
@@ -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

arch/x86/platform/olpc/olpc-xo1-sci.c

+37 −0
Original line number Diff line number Diff line
@@ -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;

}