From b7af2bb84cea328c766c615aac45cdd498c50bc6 Mon Sep 17 00:00:00 2001 From: Chris Bagwell Date: Tue, 12 Jun 2012 00:25:23 -0700 Subject: [PATCH] Input: wacom - battery reporting improvements Do not register battery device until connected to a tablet. This prevents an empty battery icon from being shown when tablet is connected using USB cable. Also, call power_supply_powers() for apps that can make use of that info. And stop ignoring input registration failures. Signed-off-by: Chris Bagwell Reviewed-by: Ping Cheng Signed-off-by: Dmitry Torokhov --- drivers/input/tablet/wacom_sys.c | 82 +++++++++++++++++++++----------- 1 file changed, 53 insertions(+), 29 deletions(-) diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c index 79b5cfbc1bc..a48fcb76bb8 100644 --- a/drivers/input/tablet/wacom_sys.c +++ b/drivers/input/tablet/wacom_sys.c @@ -963,6 +963,10 @@ static int wacom_initialize_battery(struct wacom *wacom) error = power_supply_register(&wacom->usbdev->dev, &wacom->battery); + + if (!error) + power_supply_powers(&wacom->battery, + &wacom->usbdev->dev); } return error; @@ -970,8 +974,11 @@ static int wacom_initialize_battery(struct wacom *wacom) static void wacom_destroy_battery(struct wacom *wacom) { - if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_MONITOR) + if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_MONITOR && + wacom->battery.dev) { power_supply_unregister(&wacom->battery); + wacom->battery.dev = NULL; + } } static int wacom_register_input(struct wacom *wacom) @@ -1018,23 +1025,30 @@ static void wacom_wireless_work(struct work_struct *work) struct wacom *wacom = container_of(work, struct wacom, work); struct usb_device *usbdev = wacom->usbdev; struct wacom_wac *wacom_wac = &wacom->wacom_wac; + struct wacom *wacom1, *wacom2; + struct wacom_wac *wacom_wac1, *wacom_wac2; + int error; /* * Regardless if this is a disconnect or a new tablet, - * remove any existing input devices. + * remove any existing input and battery devices. */ + wacom_destroy_battery(wacom); + /* Stylus interface */ - wacom = usb_get_intfdata(usbdev->config->interface[1]); - if (wacom->wacom_wac.input) - input_unregister_device(wacom->wacom_wac.input); - wacom->wacom_wac.input = NULL; + wacom1 = usb_get_intfdata(usbdev->config->interface[1]); + wacom_wac1 = &(wacom1->wacom_wac); + if (wacom_wac1->input) + input_unregister_device(wacom_wac1->input); + wacom_wac1->input = NULL; /* Touch interface */ - wacom = usb_get_intfdata(usbdev->config->interface[2]); - if (wacom->wacom_wac.input) - input_unregister_device(wacom->wacom_wac.input); - wacom->wacom_wac.input = NULL; + wacom2 = usb_get_intfdata(usbdev->config->interface[2]); + wacom_wac2 = &(wacom2->wacom_wac); + if (wacom_wac2->input) + input_unregister_device(wacom_wac2->input); + wacom_wac2->input = NULL; if (wacom_wac->pid == 0) { dev_info(&wacom->intf->dev, "wireless tablet disconnected\n"); @@ -1059,24 +1073,39 @@ static void wacom_wireless_work(struct work_struct *work) } /* Stylus interface */ - wacom = usb_get_intfdata(usbdev->config->interface[1]); - wacom_wac = &wacom->wacom_wac; - wacom_wac->features = + wacom_wac1->features = *((struct wacom_features *)id->driver_info); - wacom_wac->features.device_type = BTN_TOOL_PEN; - wacom_register_input(wacom); + wacom_wac1->features.device_type = BTN_TOOL_PEN; + error = wacom_register_input(wacom1); + if (error) + goto fail1; /* Touch interface */ - wacom = usb_get_intfdata(usbdev->config->interface[2]); - wacom_wac = &wacom->wacom_wac; - wacom_wac->features = + wacom_wac2->features = *((struct wacom_features *)id->driver_info); - wacom_wac->features.pktlen = WACOM_PKGLEN_BBTOUCH3; - wacom_wac->features.device_type = BTN_TOOL_FINGER; - wacom_set_phy_from_res(&wacom_wac->features); - wacom_wac->features.x_max = wacom_wac->features.y_max = 4096; - wacom_register_input(wacom); + wacom_wac2->features.pktlen = WACOM_PKGLEN_BBTOUCH3; + wacom_wac2->features.device_type = BTN_TOOL_FINGER; + wacom_set_phy_from_res(&wacom_wac2->features); + wacom_wac2->features.x_max = wacom_wac2->features.y_max = 4096; + error = wacom_register_input(wacom2); + if (error) + goto fail2; + + error = wacom_initialize_battery(wacom); + if (error) + goto fail3; } + + return; + +fail3: + input_unregister_device(wacom_wac2->input); + wacom_wac2->input = NULL; +fail2: + input_unregister_device(wacom_wac1->input); + wacom_wac1->input = NULL; +fail1: + return; } static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id) @@ -1179,14 +1208,10 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i if (error) goto fail4; - error = wacom_initialize_battery(wacom); - if (error) - goto fail5; - if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) { error = wacom_register_input(wacom); if (error) - goto fail6; + goto fail5; } /* Note that if query fails it is not a hard failure */ @@ -1201,7 +1226,6 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i return 0; - fail6: wacom_destroy_battery(wacom); fail5: wacom_destroy_leds(wacom); fail4: wacom_remove_shared_data(wacom_wac); fail3: usb_free_urb(wacom->irq); -- 2.20.1