From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758267Ab3LFNDG (ORCPT ); Fri, 6 Dec 2013 08:03:06 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:44317 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758248Ab3LFNDD (ORCPT ); Fri, 6 Dec 2013 08:03:03 -0500 From: Luis Henriques To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Simon Wood , Jiri Kosina , Luis Henriques Subject: [PATCH 3.11 159/272] HID:hid-lg4ff: Switch autocentering off when strength is set to zero. Date: Fri, 6 Dec 2013 12:57:28 +0000 Message-Id: <1386334761-25517-160-git-send-email-luis.henriques@canonical.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1386334761-25517-1-git-send-email-luis.henriques@canonical.com> References: <1386334761-25517-1-git-send-email-luis.henriques@canonical.com> X-Extended-Stable: 3.11 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.11.10.1 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Simon Wood commit d2c02da549b468bbb28e67d269bd3c9e10683ff5 upstream. When the autocenter is set to zero, this patch issues a command to totally disable the autocenter - this results in less resistance in the wheel. Reported-by: Elias Vanderstuyft Signed-off-by: Simon Wood Signed-off-by: Jiri Kosina Signed-off-by: Luis Henriques --- drivers/hid/hid-lg4ff.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/hid/hid-lg4ff.c b/drivers/hid/hid-lg4ff.c index 530fcd19..49f6cc0 100644 --- a/drivers/hid/hid-lg4ff.c +++ b/drivers/hid/hid-lg4ff.c @@ -220,6 +220,20 @@ static void hid_lg4ff_set_autocenter_default(struct input_dev *dev, u16 magnitud __s32 *value = report->field[0]->value; __u32 expand_a, expand_b; + /* De-activate Auto-Center */ + if (magnitude == 0) { + value[0] = 0xf5; + value[1] = 0x00; + value[2] = 0x00; + value[3] = 0x00; + value[4] = 0x00; + value[5] = 0x00; + value[6] = 0x00; + + hid_hw_request(hid, report, HID_REQ_SET_REPORT); + return; + } + if (magnitude <= 0xaaaa) { expand_a = 0x0c * magnitude; expand_b = 0x80 * magnitude; @@ -237,6 +251,17 @@ static void hid_lg4ff_set_autocenter_default(struct input_dev *dev, u16 magnitud value[6] = 0x00; hid_hw_request(hid, report, HID_REQ_SET_REPORT); + + /* Activate Auto-Center */ + value[0] = 0x14; + value[1] = 0x00; + value[2] = 0x00; + value[3] = 0x00; + value[4] = 0x00; + value[5] = 0x00; + value[6] = 0x00; + + hid_hw_request(hid, report, HID_REQ_SET_REPORT); } /* Sends autocentering command compatible with Formula Force EX */ -- 1.8.3.2