From patchwork Mon Nov 3 08:33:01 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dudley Du X-Patchwork-Id: 5214981 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 2417A9F295 for ; Mon, 3 Nov 2014 08:39:18 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 482E720166 for ; Mon, 3 Nov 2014 08:39:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 64A622015E for ; Mon, 3 Nov 2014 08:39:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752091AbaKCIgI (ORCPT ); Mon, 3 Nov 2014 03:36:08 -0500 Received: from mail-pa0-f52.google.com ([209.85.220.52]:60856 "EHLO mail-pa0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750910AbaKCIgD (ORCPT ); Mon, 3 Nov 2014 03:36:03 -0500 Received: by mail-pa0-f52.google.com with SMTP id fa1so11618736pad.25 for ; Mon, 03 Nov 2014 00:36:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=pO6ZPP02jaltSnhF8pd9EaVnUE9Q6pJmwkti6UTiKT8=; b=RkNPurofdf3WGPCfngUSejOIZfbmaoP8qfMDjH4t897qQo8CALfkrow2f5kiHpqPd3 tez1j9GeHlZLx/yyYSY+pK3zqOKtK/bQ/DPjR/uqbePgLqsY87quKfgNAYvP2fNwfNuR 8Az3L3fuFqdNH9lpcPoUlwGnzmjOgpndBLoYPxCLao/aAT6laFlEPNrOV+zN1eHBDUoQ 2XlvQ1tGiK74c4lpd6ZyUsxCeR+CTD+mi86obJL/ezsuxdxZ9uviAg0xIm7bq2aNP55G tuj62AbzSq4PQMzCWqJNKgz3BbCov9ZFcWC7SXwfE8q0LsyOguKV5Xjg4Uo2eC/HAY75 2d8w== X-Received: by 10.70.51.195 with SMTP id m3mr41601484pdo.27.1415003762704; Mon, 03 Nov 2014 00:36:02 -0800 (PST) Received: from localhost ([140.207.206.26]) by mx.google.com with ESMTPSA id l9sm10955406pbq.26.2014.11.03.00.35.59 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Mon, 03 Nov 2014 00:36:01 -0800 (PST) From: Dudley Du X-Google-Original-From: Dudley Du To: dmitry.torokhov@gmail.com, rydberg@euromail.se Cc: Dudley Du , bleung@google.com, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v9 09/18] input: cyapa: add gen3 trackpad device read baseline function support Date: Mon, 3 Nov 2014 16:33:01 +0800 Message-Id: <1415003590-30485-10-git-send-email-dudl@cypress.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1415003590-30485-1-git-send-email-dudl@cypress.com> References: <1415003590-30485-1-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=-7.4 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=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 | 74 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) diff --git a/drivers/input/mouse/cyapa_gen3.c b/drivers/input/mouse/cyapa_gen3.c index 7caa93f..406b5db 100644 --- a/drivers/input/mouse/cyapa_gen3.c +++ b/drivers/input/mouse/cyapa_gen3.c @@ -756,6 +756,78 @@ 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 = 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 * @@ -1068,6 +1140,8 @@ 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,