From patchwork Wed Sep 10 04:34:55 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dudley Du X-Patchwork-Id: 4874261 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 221729F32F for ; Wed, 10 Sep 2014 04:40:38 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2206D2008F for ; Wed, 10 Sep 2014 04:40:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3645E201B9 for ; Wed, 10 Sep 2014 04:40:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751717AbaIJEkG (ORCPT ); Wed, 10 Sep 2014 00:40:06 -0400 Received: from bay004-omc1s19.hotmail.com ([65.54.190.30]:62178 "EHLO BAY004-OMC1S19.hotmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751684AbaIJEkC convert rfc822-to-8bit (ORCPT ); Wed, 10 Sep 2014 00:40:02 -0400 Received: from BAY176-DS15 ([65.54.190.61]) by BAY004-OMC1S19.hotmail.com over TLS secured channel with Microsoft SMTPSVC(7.5.7601.22724); Tue, 9 Sep 2014 21:34:56 -0700 X-TMN: [qFU5LXHlHcpnTor1HgBV9WC5jFFLuLh3] X-Originating-Email: [dudlx@outlook.com] Message-ID: From: Dudley Du To: , CC: , , , Subject: [PATCH v6 08/13] input: cyapa: add gen3 trackpad device baseline and calibrate functions support Date: Wed, 10 Sep 2014 12:34:55 +0800 MIME-Version: 1.0 X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Ac/MsJJTa5i4GtflQ3qifDOdxxQumQ== Content-Language: zh-cn X-OriginalArrivalTime: 10 Sep 2014 04:34:56.0859 (UTC) FILETIME=[92F0AAB0:01CFCCB0] Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-9.4 required=5.0 tests=BAYES_00,FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham 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 report baseline and force calibrate functions supported for gen3 trackpad device, which these functions are supplied through cyapa core baseline and calibrate interfaces. TEST=test on Chromebooks. Signed-off-by: Dudley Du --- drivers/input/mouse/cyapa_gen3.c | 135 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 135 insertions(+) diff --git a/drivers/input/mouse/cyapa_gen3.c b/drivers/input/mouse/cyapa_gen3.c index f753a94..1f4668a 100644 --- a/drivers/input/mouse/cyapa_gen3.c +++ b/drivers/input/mouse/cyapa_gen3.c @@ -756,6 +756,138 @@ static int cyapa_gen3_do_fw_update(struct cyapa *cyapa, return 0; } +static ssize_t cyapa_gen3_do_calibrate(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + int tries = 20; /* max recalibration timeout 2s. */ + int ret; + + data_reporting_started = false; + + 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_RECALIBRATION_MASK); + if (ret < 0) { + dev_err(dev, "Failed to send calibrate command. ret = %d\n", + ret); + goto out; + } + + do { + /* + * For this recalibration, the max time will not exceed 2s. + * The average time is approximately 500 - 700 ms, and we + * will check the status every 100 - 200ms. + */ + usleep_range(100000, 200000); + + 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, "Failed to calibrate. Timeout.\n"); + ret = -ETIMEDOUT; + goto out; + } + dev_dbg(dev, "Calibration successful.\n"); + +out: + data_reporting_started = true; + return ret < 0 ? ret : count; +} + +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 = 3; + int ret; + + data_reporting_started = false; + + 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; + } + + 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: + data_reporting_started = true; + return ret; +} + /* * cyapa_get_wait_time_for_pwr_cmd * @@ -1063,6 +1195,9 @@ const struct cyapa_dev_ops cyapa_gen3_ops = { .update_fw = cyapa_gen3_do_fw_update, .bl_deactivate = cyapa_gen3_bl_deactivate, + .show_baseline = cyapa_gen3_show_baseline, + .calibrate_store = cyapa_gen3_do_calibrate, + .state_parse = cyapa_gen3_state_parse, .operational_check = cyapa_gen3_do_operational_check,