From patchwork Wed Dec 31 01:16:56 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dudley Du X-Patchwork-Id: 5553431 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 [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 874C29F2B9 for ; Wed, 31 Dec 2014 01:20:31 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B95302017E for ; Wed, 31 Dec 2014 01:20:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DD4D020123 for ; Wed, 31 Dec 2014 01:20:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752258AbaLaBTy (ORCPT ); Tue, 30 Dec 2014 20:19:54 -0500 Received: from smtp1.cypress.com ([157.95.67.100]:60408 "EHLO smtp1.cypress.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751380AbaLaBSD (ORCPT ); Tue, 30 Dec 2014 20:18:03 -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 sBV1HueR001191; Tue, 30 Dec 2014 17:17:56 -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 sBV1HufI032564; Tue, 30 Dec 2014 17:17:56 -0800 Received: from localhost ([172.23.6.162]) by mailhost.mis.cypress.com (8.12.11/8.12.11) with ESMTP id sBV1Htf2016154; Tue, 30 Dec 2014 17:17:56 -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 v17 07/12] input: cyapa: add gen3 trackpad device read baseline function support Date: Wed, 31 Dec 2014 09:16:56 +0800 Message-Id: <1419988621-2919-8-git-send-email-dudl@cypress.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1419988621-2919-1-git-send-email-dudl@cypress.com> References: <1419988621-2919-1-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 read baseline function supported for gen3 trackpad device, it can be used through sysfs baseline interface. TEST=test on Chromebooks. Signed-off-by: Dudley Du --- drivers/input/mouse/cyapa_gen3.c | 72 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) diff --git a/drivers/input/mouse/cyapa_gen3.c b/drivers/input/mouse/cyapa_gen3.c index 715abda..0cb52fa 100644 --- a/drivers/input/mouse/cyapa_gen3.c +++ b/drivers/input/mouse/cyapa_gen3.c @@ -765,6 +765,76 @@ static int cyapa_gen3_do_fw_update(struct cyapa *cyapa, return 0; } +static ssize_t cyapa_gen3_show_baseline(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + int max_baseline, min_baseline; + int tries; + int ret; + + ret = cyapa_read_byte(cyapa, CYAPA_CMD_DEV_STATUS); + if (ret < 0) { + dev_err(dev, "Error reading dev status. err = %d\n", ret); + goto out; + } + if ((ret & CYAPA_DEV_NORMAL) != CYAPA_DEV_NORMAL) { + dev_warn(dev, "Trackpad device is busy. device state = 0x%x\n", + ret); + ret = -EAGAIN; + goto out; + } + + ret = cyapa_write_byte(cyapa, CYAPA_CMD_SOFT_RESET, + OP_REPORT_BASELINE_MASK); + if (ret < 0) { + dev_err(dev, "Failed to send report baseline command. %d\n", + ret); + goto out; + } + + tries = 3; /* Try for 30 to 60 ms */ + do { + usleep_range(10000, 20000); + + ret = cyapa_read_byte(cyapa, CYAPA_CMD_DEV_STATUS); + if (ret < 0) { + dev_err(dev, "Error reading dev status. err = %d\n", + ret); + goto out; + } + if ((ret & CYAPA_DEV_NORMAL) == CYAPA_DEV_NORMAL) + break; + } while (--tries); + + if (tries == 0) { + dev_err(dev, "Device timed out going to Normal state.\n"); + ret = -ETIMEDOUT; + goto out; + } + + ret = cyapa_read_byte(cyapa, CYAPA_CMD_MAX_BASELINE); + if (ret < 0) { + dev_err(dev, "Failed to read max baseline. err = %d\n", ret); + goto out; + } + max_baseline = ret; + + ret = cyapa_read_byte(cyapa, CYAPA_CMD_MIN_BASELINE); + if (ret < 0) { + dev_err(dev, "Failed to read min baseline. err = %d\n", ret); + goto out; + } + min_baseline = ret; + + dev_dbg(dev, "Baseline report successful. Max: %d Min: %d\n", + max_baseline, min_baseline); + ret = scnprintf(buf, PAGE_SIZE, "%d %d\n", max_baseline, min_baseline); + +out: + return ret; +} + /* * cyapa_get_wait_time_for_pwr_cmd * @@ -1086,6 +1156,8 @@ const struct cyapa_dev_ops cyapa_gen3_ops = { .bl_deactivate = cyapa_gen3_bl_deactivate, .bl_initiate = cyapa_gen3_bl_initiate, + .show_baseline = cyapa_gen3_show_baseline, + .initialize = cyapa_gen3_initialize, .state_parse = cyapa_gen3_state_parse,