From mboxrd@z Thu Jan 1 00:00:00 1970 From: Simon Wood Subject: [PATCH 2/5] HID:hid-lg4ff: Switch autocentering off when strength is set to zero. Date: Wed, 6 Nov 2013 12:30:41 -0700 Message-ID: <1383766244-2336-2-git-send-email-simon@mungewell.org> References: <1383766244-2336-1-git-send-email-simon@mungewell.org> Return-path: In-Reply-To: <1383766244-2336-1-git-send-email-simon@mungewell.org> Sender: linux-kernel-owner@vger.kernel.org To: linux-input@vger.kernel.org Cc: Jiri Kosina , linux-kernel@vger.kernel.org, simon@mungewell.org, Elias Vanderstuyft , =?UTF-8?q?Michal=20Mal=C3=BD?= List-Id: linux-input@vger.kernel.org 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 --- 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 */ -- 1.8.1.2