From ed4299e1b173f111ac0c40d6617e47fbff02b52f Mon Sep 17 00:00:00 2001
From: Oliver Neukum <oneukum@suse.de>
Date: Thu, 15 Jul 2010 09:16:39 -0700
Subject: [PATCH] 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 Å tetiar <ynezz@true.cz>
Tested-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
---
drivers/input/touchscreen/usbtouchscreen.c | 25 ++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c
index b9cee2738adb..9cda660ee7bb 100644
--- a/drivers/input/touchscreen/usbtouchscreen.c
+++ b/drivers/input/touchscreen/usbtouchscreen.c
@@ -1296,6 +1296,29 @@ static void usbtouch_close(struct input_dev *input)
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,
struct usbtouch_usb *usbtouch)
@@ -1486,6 +1509,8 @@ static struct usb_driver usbtouch_driver = {
.name = "usbtouchscreen",
.probe = usbtouch_probe,
.disconnect = usbtouch_disconnect,
+ .suspend = usbtouch_suspend,
+ .resume = usbtouch_resume,
.id_table = usbtouch_devices,
};
--
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