From patchwork Mon Apr 10 10:51:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Jingle.Wu" X-Patchwork-Id: 672533 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DA386C77B61 for ; Mon, 10 Apr 2023 10:58:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229670AbjDJK6w (ORCPT ); Mon, 10 Apr 2023 06:58:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50058 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229535AbjDJK6v (ORCPT ); Mon, 10 Apr 2023 06:58:51 -0400 Received: from emcscan.emc.com.tw (emcscan.emc.com.tw [192.72.220.5]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 767A52111 for ; Mon, 10 Apr 2023 03:58:49 -0700 (PDT) X-IronPort-AV: E=Sophos;i="5.98,333,1673884800"; d="scan'208";a="2469239" Received: from unknown (HELO webmail.emc.com.tw) ([192.168.10.1]) by emcscan.emc.com.tw with ESMTP; 10 Apr 2023 18:51:48 +0800 Received: from 192.168.10.23 by webmail.emc.com.tw with MailAudit ESMTP Server V5.0(80140:0:AUTH_RELAY) (envelope-from ); Mon, 10 Apr 2023 18:51:49 +0800 (CST) Received: from 101.10.110.106 by webmail.emc.com.tw with Mail2000 ESMTPA Server V7.00(2477:1:AUTH_LOGIN) (envelope-from ); Mon, 10 Apr 2023 18:51:47 +0800 (CST) From: "jingle.wu" To: linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, dmitry.torokhov@gmail.com Cc: phoenix@emc.com.tw, josh.chen@emc.com.tw, dave.wang@emc.com.tw, "jingle.wu" Subject: [PATCH] Input: elan_i2c - Implement inhibit/uninhibit functions. Date: Mon, 10 Apr 2023 18:51:25 +0800 Message-Id: <20230410105125.606481-1-jingle.wu@emc.com.tw> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Add inhibit/uninhibit functions. Signed-off-by: Jingle.wu --- drivers/input/mouse/elan_i2c_core.c | 83 +++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c index 5f0d75a45c80..423f22fded59 100644 --- a/drivers/input/mouse/elan_i2c_core.c +++ b/drivers/input/mouse/elan_i2c_core.c @@ -329,6 +329,86 @@ static int elan_initialize(struct elan_tp_data *data, bool skip_reset) return error; } +static int elan_reactivate(struct elan_tp_data *data) +{ + struct device *dev = &data->client->dev; + int error; + + error = elan_set_power(data, true); + if (error) + dev_err(dev, "failed to restore power: %d\n", error); + + error = data->ops->sleep_control(data->client, false); + if (error) { + dev_err(dev, + "failed to wake device up: %d\n", error); + return error; + } + + return error; +} + +static void elan_inhibit(struct input_dev *input_dev) +{ + struct elan_tp_data *data = input_get_drvdata(input_dev); + struct i2c_client *client = data->client; + int error; + + dev_dbg(&client->dev, "inhibiting\n"); + /* + * We are taking the mutex to make sure sysfs operations are + * complete before we attempt to bring the device into low[er] + * power mode. + */ + error = mutex_lock_interruptible(&data->sysfs_mutex); + if (error) + return; + + disable_irq(client->irq); + + error = elan_set_power(data, false); + if (error) + enable_irq(client->irq); + + mutex_unlock(&data->sysfs_mutex); + +} + +static void elan_close(struct input_dev *input_dev) +{ + if ((input_dev->users) && (!input_dev->inhibited)) + elan_inhibit(input_dev); + +} + +static int elan_uninhibit(struct input_dev *input_dev) +{ + struct elan_tp_data *data = input_get_drvdata(input_dev); + struct i2c_client *client = data->client; + int error; + + dev_dbg(&client->dev, "uninhibiting\n"); + error = mutex_lock_interruptible(&data->sysfs_mutex); + if (error) + return error; + + error = elan_reactivate(data); + if (error == 0) + enable_irq(client->irq); + + mutex_unlock(&data->sysfs_mutex); + + return error; +} + +static int elan_open(struct input_dev *input_dev) +{ + if ((input_dev->users) && (input_dev->inhibited)) + return elan_uninhibit(input_dev); + + return 0; +} + static int elan_query_device_info(struct elan_tp_data *data) { int error; @@ -1175,6 +1255,9 @@ static int elan_setup_input_device(struct elan_tp_data *data) 0, ETP_FINGER_WIDTH * min_width, 0, 0); } + input->open = elan_open; + input->close = elan_close; + data->input = input; return 0;