From patchwork Fri Jan 16 06:34:14 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dudley Du X-Patchwork-Id: 5645801 Return-Path: X-Original-To: patchwork-linux-input@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 8DC33C058D for ; Fri, 16 Jan 2015 06:37:23 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id AAA8F201C0 for ; Fri, 16 Jan 2015 06:37:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B2009201B9 for ; Fri, 16 Jan 2015 06:37:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754548AbbAPGfa (ORCPT ); Fri, 16 Jan 2015 01:35:30 -0500 Received: from smtp1.cypress.com ([157.95.67.100]:49190 "EHLO smtp1.cypress.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754198AbbAPGfX (ORCPT ); Fri, 16 Jan 2015 01:35:23 -0500 Received: from corpmail1.cypress.com (corpmail1.mis.cypress.com [172.16.5.228]) by smtp1.cypress.com (8.13.8/8.13.8) with ESMTP id t0G6ZGgb005207; Thu, 15 Jan 2015 22:35:16 -0800 Received: from mailhost.mis.cypress.com (mailhost [172.16.2.5]) by corpmail1.cypress.com (8.14.4/8.14.4) with ESMTP id t0G6ZGx7025345; Thu, 15 Jan 2015 22:35:16 -0800 Received: from localhost ([172.23.6.162]) by mailhost.mis.cypress.com (8.12.11/8.12.11) with ESMTP id t0G6ZEXM002455; Thu, 15 Jan 2015 22:35:15 -0800 (PST) From: Dudley Du To: dmitry.torokhov@gmail.com, jmmahler@gmail.com, rydberg@euromail.se Cc: Dudley Du , bleung@google.com, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v18 11/12] input: cyapa: add gen5 trackpad device force re-calibrate function support Date: Fri, 16 Jan 2015 14:34:14 +0800 Message-Id: <1421390055-32760-12-git-send-email-dudl@cypress.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1421390055-32760-1-git-send-email-dudl@cypress.com> References: <1421390055-32760-1-git-send-email-dudl@cypress.com> 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, 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(+) diff --git a/drivers/input/mouse/cyapa_gen5.c b/drivers/input/mouse/cyapa_gen5.c index 7c6e339..ced2a2c 100644 --- a/drivers/input/mouse/cyapa_gen5.c +++ b/drivers/input/mouse/cyapa_gen5.c @@ -1715,6 +1715,70 @@ 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) { if (value >> (num_bits - 1)) @@ -2696,6 +2760,7 @@ const struct cyapa_dev_ops cyapa_gen5_ops = { .bl_deactivate = cyapa_gen5_bl_deactivate, .show_baseline = cyapa_gen5_show_baseline, + .calibrate_store = cyapa_gen5_do_calibrate, .initialize = cyapa_gen5_initialize,