From patchwork Tue Aug 14 01:47:05 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: ??? X-Patchwork-Id: 1317611 X-Patchwork-Delegate: jikos@jikos.cz Return-Path: X-Original-To: patchwork-linux-input@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 676E03FC81 for ; Tue, 14 Aug 2012 01:45:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754067Ab2HNBp5 (ORCPT ); Mon, 13 Aug 2012 21:45:57 -0400 Received: from emcscan.emc.com.tw ([192.72.220.5]:48834 "EHLO emcscan.emc.com.tw" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754065Ab2HNBp4 (ORCPT ); Mon, 13 Aug 2012 21:45:56 -0400 Received: from unknown (HELO emc.com.tw) ([192.168.10.1]) by emcscan.emc.com.tw with ESMTP; 14 Aug 2012 09:45:55 +0800 Received: from localhost ([192.168.131.101]) by emc.com.tw (8.13.7+Sun/8.13.7) with ESMTP id q7E1jrev016906; Tue, 14 Aug 2012 09:45:53 +0800 (CST) From: Scott Liu To: "benjamin.tissoires" , Dmitry Torokhov , Jiri Kosina , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, eleghost@gmail.com Cc: Scott Liu Subject: [PATCH v3 1/1] HID:hid-multitouch: Add ELAN production request when resume. Date: Tue, 14 Aug 2012 09:47:05 +0800 Message-Id: <1344908825-6691-1-git-send-email-scott.liu@emc.com.tw> X-Mailer: git-send-email 1.7.9.5 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Add ELAN production request when resume Signed-off-by: Scott Liu Suggested-off-by: Benjamin Tissoires --- drivers/hid/hid-multitouch.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 59c8b5c..e824c37 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -767,6 +767,32 @@ 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; + struct usb_host_interface *interface; + struct usb_device *dev; + + if (hdev->bus != BUS_USB) + return 0; + + intf = to_usb_interface(hdev->dev.parent); + interface = intf->cur_altsetting; + dev = hid_to_usb_dev(hdev); + + /* Some Elan legacy devices require SET_IDLE to be set on resume. + * It should be safe to send it to other devices too. + * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ + + 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 +1118,7 @@ static struct hid_driver mt_driver = { .event = mt_event, #ifdef CONFIG_PM .reset_resume = mt_reset_resume, + .resume = mt_resume, #endif };