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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 <chris@cnpbagwell.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
hifive-unleashed-5.1
Chris Bagwell 2012-06-12 00:25:23 -07:00 committed by Dmitry Torokhov
parent ac173837cd
commit b7af2bb84c
1 changed files with 53 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

82
drivers/input/tablet/wacom_sys.c
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@ -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);