From patchwork Fri Aug 29 08:35:27 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dudley Du X-Patchwork-Id: 4809141 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 8E4B19F37E for ; Fri, 29 Aug 2014 08:36:50 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A93482011E for ; Fri, 29 Aug 2014 08:36:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A585620109 for ; Fri, 29 Aug 2014 08:36:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753034AbaH2Igk (ORCPT ); Fri, 29 Aug 2014 04:36:40 -0400 Received: from mail-pa0-f45.google.com ([209.85.220.45]:57867 "EHLO mail-pa0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753102AbaH2Igg convert rfc822-to-8bit (ORCPT ); Fri, 29 Aug 2014 04:36:36 -0400 Received: by mail-pa0-f45.google.com with SMTP id bj1so6044177pad.18 for ; Fri, 29 Aug 2014 01:36:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:from:to:cc:subject:date:mime-version:content-type :content-transfer-encoding:thread-index:content-language; bh=vDB4mnKhxOADPX+Wuso9iPzcoENrZafCx1E9oK5sHVI=; b=Ne5LxkpYABffAIaclUkNxmugJih8idkFmriY1mMH/yBJ61ZacmEWVOLy5PYROpPNIn DnpKSZurwow9XOltBwrgKDAe4pFryvOxgaXjFc3ig9RolSk4skaE4Dg+gRyqDQksn0cT NJy7j+/cfY4LgQFhEaIQLIeVDq1ZIsXBn7aVkdoUxe963bt4C0/B4N9DWpTJJ5SZeur+ RZPedZfXjJoxlfQmIWQTzCnkPXZ5erTQMHvoi/7OYxqJw9pE50GDKyWWzZcHJ7WpFmRs DGAjD0xqZMLOR4sN17i6epz6RN//q3R21tN4Z7djHrgML7KaCXPqKzQ/IeZAFUvLFCuX t38w== X-Received: by 10.66.102.37 with SMTP id fl5mr13427096pab.35.1409301395330; Fri, 29 Aug 2014 01:36:35 -0700 (PDT) Received: from dudllaptop ([140.207.206.26]) by mx.google.com with ESMTPSA id h12sm8970709pdk.48.2014.08.29.01.36.28 for (version=TLSv1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 29 Aug 2014 01:36:34 -0700 (PDT) Message-ID: <54003b92.ac26460a.73fc.ffffe963@mx.google.com> X-Google-Original-Message-ID: <000601cfc364$567fdd80$037f9880$@dulixin@gmail.com> From: "Dudley Du" To: , Cc: , , , Subject: [PATCH V5 08/14] input: cyapa: add gen3 trackpad device baseline and calibrate functions support Date: Fri, 29 Aug 2014 16:35:27 +0800 MIME-Version: 1.0 X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Ac/DWJM84HbvnMISSg2U5DvjbDE8eA== Content-Language: zh-cn Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, 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,