Messages in this thread Patch in this message | | | From | Daniel Drake <> | Subject | [PATCH 09/11] x86, olpc-xo1-sci: Propagate power supply/battery events | Date | Sat, 30 Apr 2011 13:32:28 +0100 |
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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> --- arch/x86/Kconfig | 4 ++- arch/x86/platform/olpc/olpc-xo1-sci.c | 37 +++++++++++++++++++++++++++++++++ 2 files changed, 40 insertions(+), 1 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index c40cd82..583e1c5 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -2074,13 +2074,15 @@ 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 ---help--- Add support for SCI-based features of the OLPC XO-1 laptop: - EC-driven system wakeups - 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 176e4ae..1cd800e 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; } -- 1.7.4.4
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