From patchwork Wed Dec 17 09:57:58 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dudley Du X-Patchwork-Id: 5506091 Return-Path: X-Original-To: patchwork-linux-input@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id E11339F4DC for ; Wed, 17 Dec 2014 10:01:41 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 1F438209E5 for ; Wed, 17 Dec 2014 10:01:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F343B209DC for ; Wed, 17 Dec 2014 10:01:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751853AbaLQKBC (ORCPT ); Wed, 17 Dec 2014 05:01:02 -0500 Received: from bay004-omc1s8.hotmail.com ([65.54.190.19]:58266 "EHLO BAY004-OMC1S8.hotmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751821AbaLQKBA (ORCPT ); Wed, 17 Dec 2014 05:01:00 -0500 Received: from BAY407-EAS378 ([65.54.190.60]) by BAY004-OMC1S8.hotmail.com over TLS secured channel with Microsoft SMTPSVC(7.5.7601.22751); Wed, 17 Dec 2014 01:58:00 -0800 X-TMN: [/dI5AWXxJKBi6gkx+PqICGsuA6NNkYfo] X-Originating-Email: [dudlx@outlook.com] Message-ID: From: Dudley Du To: , , CC: , , Subject: [PATCH v16 11/12] input: cyapa: add gen5 trackpad device force Date: Wed, 17 Dec 2014 17:57:58 +0800 MIME-Version: 1.0 X-Mailer: Microsoft Outlook 15.0 Thread-Index: AdAZ32xF25eRWf+OSe+EWwDlNbaZ/w== Content-Language: zh-cn X-OriginalArrivalTime: 17 Dec 2014 09:58:00.0555 (UTC) FILETIME=[F10173B0:01D019DF] Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add force re-calibrate function supported for gen5 trackpad device, it can be used through sysfs calibrate interface. TEST=test on Chromebooks. Signed-off-by: Dudley Du --- drivers/input/mouse/cyapa_gen5.c | 65 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) if (value >> (num_bits - 1)) @@ -2689,6 +2753,7 @@ const struct cyapa_dev_ops cyapa_gen5_ops = { .update_fw = cyapa_gen5_do_fw_update, .show_baseline = cyapa_gen5_show_baseline, + .calibrate_store = cyapa_gen5_do_calibrate, .initialize = cyapa_gen5_initialize, diff --git a/drivers/input/mouse/cyapa_gen5.c b/drivers/input/mouse/cyapa_gen5.c index 2b800e3..4bb6f34 100644 --- a/drivers/input/mouse/cyapa_gen5.c +++ b/drivers/input/mouse/cyapa_gen5.c @@ -1713,6 +1713,70 @@ static int cyapa_gen5_suspend_scanning(struct cyapa *cyapa) return 0; } +static int cyapa_gen5_calibrate_pwcs(struct cyapa *cyapa, + u8 calibrate_sensing_mode_type) +{ + struct gen5_app_cmd_head *app_cmd_head; + u8 cmd[8]; + u8 resp_data[6]; + int resp_len; + int error; + + /* Try to dump all buffered data before doing command. */ + cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); + + memset(cmd, 0, sizeof(cmd)); + app_cmd_head = (struct gen5_app_cmd_head *)cmd; + put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &app_cmd_head->addr); + put_unaligned_le16(sizeof(cmd) - 2, &app_cmd_head->length); + app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID; + app_cmd_head->cmd_code = GEN5_CMD_CALIBRATE; + app_cmd_head->parameter_data[0] = calibrate_sensing_mode_type; + resp_len = sizeof(resp_data); + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, + cmd, sizeof(cmd), + resp_data, &resp_len, + 5000, cyapa_gen5_sort_tsg_pip_app_resp_data, true); + if (error || !VALID_CMD_RESP_HEADER(resp_data, GEN5_CMD_CALIBRATE) || + !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5])) + return error < 0 ? error : -EAGAIN; + + return 0; +} + +static ssize_t cyapa_gen5_do_calibrate(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + int error, calibrate_error; + + /* 1. Suspend Scanning*/ + error = cyapa_gen5_suspend_scanning(cyapa); + if (error) + return error; + + /* 2. Do mutual capacitance fine calibrate. */ + calibrate_error = cyapa_gen5_calibrate_pwcs(cyapa, + CYAPA_SENSING_MODE_MUTUAL_CAP_FINE); + if (calibrate_error) + goto resume_scanning; + + /* 3. Do self capacitance calibrate. */ + calibrate_error = cyapa_gen5_calibrate_pwcs(cyapa, + CYAPA_SENSING_MODE_SELF_CAP); + if (calibrate_error) + goto resume_scanning; + +resume_scanning: + /* 4. Resume Scanning*/ + error = cyapa_gen5_resume_scanning(cyapa); + if (error || calibrate_error) + return error ? error : calibrate_error; + + return count; +} + static s32 twos_complement_to_s32(s32 value, int num_bits) {