From patchwork Wed Dec 17 09:57:28 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dudley Du X-Patchwork-Id: 5506171 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 [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 47D3BBEEA8 for ; Wed, 17 Dec 2014 10:02:50 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 1EAE7209DC for ; Wed, 17 Dec 2014 10:02:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EE0AE209CF for ; Wed, 17 Dec 2014 10:02:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752377AbaLQKCa (ORCPT ); Wed, 17 Dec 2014 05:02:30 -0500 Received: from bay004-omc1s12.hotmail.com ([65.54.190.23]:60467 "EHLO BAY004-OMC1S12.hotmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752371AbaLQKC3 (ORCPT ); Wed, 17 Dec 2014 05:02:29 -0500 Received: from BAY407-EAS358 ([65.54.190.60]) by BAY004-OMC1S12.hotmail.com over TLS secured channel with Microsoft SMTPSVC(7.5.7601.22751); Wed, 17 Dec 2014 01:57:29 -0800 X-TMN: [dsx7T6iheuBv2zUfEvI62HyeaMl+n5LR] X-Originating-Email: [dudlx@outlook.com] Message-ID: From: Dudley Du To: , , CC: , , Subject: [PATCH v16 07/12] input: cyapa: add gen3 trackpad device read baseline Date: Wed, 17 Dec 2014 17:57:28 +0800 MIME-Version: 1.0 X-Mailer: Microsoft Outlook 15.0 Thread-Index: AdAZ3xJZKGC4l1rsTmSedU+pGaoqIg== Content-Language: zh-cn X-OriginalArrivalTime: 17 Dec 2014 09:57:29.0664 (UTC) FILETIME=[DE97DC00:01D019DF] 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 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 cd4f1db..92b3d6d 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 * @@ -1079,6 +1149,8 @@ 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, + .state_parse = cyapa_gen3_state_parse, .operational_check = cyapa_gen3_do_operational_check,