From 7dbd229e10603b3759f366007df2068dc2acfe46 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Fri, 25 Jul 2014 17:32:41 -0700 Subject: Input: wacom - register an ac power supply for wireless devices This is used by HID Bluetooth devices but also add some more information to the USB Wireless Receiver. We are just porting the bits from hid-wacom.c to the common driver here. Signed-off-by: Benjamin Tissoires Acked-by: Przemo Firszt Acked-by: Ping Cheng Signed-off-by: Dmitry Torokhov --- drivers/hid/wacom_sys.c | 58 ++++++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 53 insertions(+), 5 deletions(-) (limited to 'drivers/hid/wacom_sys.c') diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c index a27404d6e98d..37888c3f39ba 100644 --- a/drivers/hid/wacom_sys.c +++ b/drivers/hid/wacom_sys.c @@ -774,6 +774,12 @@ static enum power_supply_property wacom_battery_props[] = { POWER_SUPPLY_PROP_CAPACITY }; +static enum power_supply_property wacom_ac_props[] = { + POWER_SUPPLY_PROP_PRESENT, + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_SCOPE, +}; + static int wacom_battery_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) @@ -806,14 +812,38 @@ static int wacom_battery_get_property(struct power_supply *psy, return ret; } +static int wacom_ac_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct wacom *wacom = container_of(psy, struct wacom, ac); + int ret = 0; + + switch (psp) { + case POWER_SUPPLY_PROP_PRESENT: + /* fall through */ + case POWER_SUPPLY_PROP_ONLINE: + val->intval = wacom->wacom_wac.ps_connected; + break; + case POWER_SUPPLY_PROP_SCOPE: + val->intval = POWER_SUPPLY_SCOPE_DEVICE; + break; + default: + ret = -EINVAL; + break; + } + return ret; +} + static int wacom_initialize_battery(struct wacom *wacom) { - int error = 0; static atomic_t battery_no = ATOMIC_INIT(0); + int error; unsigned long n; if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) { n = atomic_inc_return(&battery_no) - 1; + wacom->battery.properties = wacom_battery_props; wacom->battery.num_properties = ARRAY_SIZE(wacom_battery_props); wacom->battery.get_property = wacom_battery_get_property; @@ -822,15 +852,31 @@ static int wacom_initialize_battery(struct wacom *wacom) wacom->battery.type = POWER_SUPPLY_TYPE_BATTERY; wacom->battery.use_for_apm = 0; + wacom->ac.properties = wacom_ac_props; + wacom->ac.num_properties = ARRAY_SIZE(wacom_ac_props); + wacom->ac.get_property = wacom_ac_get_property; + sprintf(wacom->wacom_wac.ac_name, "wacom_ac_%ld", n); + wacom->ac.name = wacom->wacom_wac.ac_name; + wacom->ac.type = POWER_SUPPLY_TYPE_MAINS; + wacom->ac.use_for_apm = 0; + error = power_supply_register(&wacom->hdev->dev, &wacom->battery); + if (error) + return error; + + power_supply_powers(&wacom->battery, &wacom->hdev->dev); + + error = power_supply_register(&wacom->hdev->dev, &wacom->ac); + if (error) { + power_supply_unregister(&wacom->battery); + return error; + } - if (!error) - power_supply_powers(&wacom->battery, - &wacom->hdev->dev); + power_supply_powers(&wacom->ac, &wacom->hdev->dev); } - return error; + return 0; } static void wacom_destroy_battery(struct wacom *wacom) @@ -839,6 +885,8 @@ static void wacom_destroy_battery(struct wacom *wacom) wacom->battery.dev) { power_supply_unregister(&wacom->battery); wacom->battery.dev = NULL; + power_supply_unregister(&wacom->ac); + wacom->ac.dev = NULL; } } -- cgit v1.2.3