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Input: usbtouchscreen - implement basic suspend/resume

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This implements basic support for suspend & resume.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Tested-by: Petr Štetiar <ynezz@true.cz>
Tested-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Oliver Neukum 2010-07-15 09:16:39 -07:00 committed by Dmitry Torokhov
parent 4cf51c383d
commit ed4299e1b1
1 changed files with 25 additions and 0 deletions
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25
drivers/input/touchscreen/usbtouchscreen.c
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@ -1296,6 +1296,29 @@ static void usbtouch_close(struct input_dev *input)
usb_kill_urb(usbtouch->irq); usb_kill_urb(usbtouch->irq);
} }
static int usbtouch_suspend
(struct usb_interface *intf, pm_message_t message)
{
struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
usb_kill_urb(usbtouch->irq);
return 0;
}
static int usbtouch_resume(struct usb_interface *intf)
{
struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
struct input_dev *input = usbtouch->input;
int result = 0;
mutex_lock(&input->mutex);
if (input->users || usbtouch->type->irq_always)
result = usb_submit_urb(usbtouch->irq, GFP_NOIO);
mutex_unlock(&input->mutex);
return result;
}
static void usbtouch_free_buffers(struct usb_device *udev, static void usbtouch_free_buffers(struct usb_device *udev,
struct usbtouch_usb *usbtouch) struct usbtouch_usb *usbtouch)
@ -1486,6 +1509,8 @@ static struct usb_driver usbtouch_driver = {
.name = "usbtouchscreen", .name = "usbtouchscreen",
.probe = usbtouch_probe, .probe = usbtouch_probe,
.disconnect = usbtouch_disconnect, .disconnect = usbtouch_disconnect,
.suspend = usbtouch_suspend,
.resume = usbtouch_resume,
.id_table = usbtouch_devices, .id_table = usbtouch_devices,
}; };