linux-kernel - [PATCH] hid:hid-multitouch: add mt

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Date:	Wed,  8 Aug 2012 09:40:33 +0800
From:	Scott Liu <scott.liu@....com.tw>
To:	"benjamin.tissoires" <benjamin.tissoires@...il.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Jiri Kosina <jkosina@...e.cz>, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org, eleghost@...il.com
Cc:	Scott Liu <scott.liu@....com.tw>
Subject: [PATCH] hid:hid-multitouch:  add mt_resume for ELAN's production

Some of ELAN’s production need to issue set_idle when resume.

Signed-off-by: Scott Liu <scott.liu@....com.tw>
---
 drivers/hid/hid-ids.h        |    3 +++
 drivers/hid/hid-multitouch.c |   26 ++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 41c34f2..703aaed 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -829,4 +829,7 @@
 #define USB_VENDOR_ID_PRIMAX	0x0461
 #define USB_DEVICE_ID_PRIMAX_KEYBOARD	0x4e05
 
+#define USB_VENDOR_ID_ELAN	0x04f3
+#define USB_DEVICE_ID_ELAN_MOCCA	0x000a
+
 #endif
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 59c8b5c..a086a16 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -767,6 +767,31 @@ static int mt_reset_resume(struct hid_device *hdev)
 	mt_set_input_mode(hdev);
 	return 0;
 }
+
+static int mt_resume(struct hid_device *hdev)
+{
+	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
+	struct usb_host_interface *interface = intf->cur_altsetting;
+
+	struct usb_device *dev = hid_to_usb_dev(hdev);
+
+	if (hdev->vendor == USB_VENDOR_ID_ELAN && 
+			hdev->product == USB_DEVICE_ID_ELAN_MOCCA) {
+
+		usb_control_msg(dev, 
+						usb_sndctrlpipe(dev, 0),						
+		                HID_REQ_SET_IDLE, 
+						USB_TYPE_CLASS | USB_RECIP_INTERFACE, 
+						0,
+		                interface->desc.bInterfaceNumber, 
+						NULL, 
+						0, 
+						USB_CTRL_SET_TIMEOUT);
+	}
+
+	return 0;
+}
+
 #endif
 
 static void mt_remove(struct hid_device *hdev)
@@ -1092,6 +1117,7 @@ static struct hid_driver mt_driver = {
 	.event = mt_event,
 #ifdef CONFIG_PM
 	.reset_resume = mt_reset_resume,
+	.resume=mt_resume,
 #endif
 };
 
-- 
1.7.9.5

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