From patchwork Wed Jul 18 18:27:17 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Myl=C3=A8ne_Josserand?= X-Patchwork-Id: 10533075 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 6471C600F4 for ; Wed, 18 Jul 2018 18:27:55 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5CC9229B7F for ; Wed, 18 Jul 2018 18:27:55 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 510F029B82; Wed, 18 Jul 2018 18:27:55 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CFA8329B7F for ; Wed, 18 Jul 2018 18:27:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729215AbeGRTGo (ORCPT ); Wed, 18 Jul 2018 15:06:44 -0400 Received: from mail.bootlin.com ([62.4.15.54]:36593 "EHLO mail.bootlin.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726992AbeGRTGn (ORCPT ); Wed, 18 Jul 2018 15:06:43 -0400 Received: by mail.bootlin.com (Postfix, from userid 110) id 817F120884; Wed, 18 Jul 2018 20:27:33 +0200 (CEST) Received: from dell-desktop.home (176-137-37-244.abo.bbox.fr [176.137.37.244]) by mail.bootlin.com (Postfix) with ESMTPSA id D2A5F206A6; Wed, 18 Jul 2018 20:27:32 +0200 (CEST) From: =?UTF-8?q?Myl=C3=A8ne=20Josserand?= To: dmitry.torokhov@gmail.com, robh+dt@kernel.org, mark.rutland@arm.com, maxime.ripard@bootlin.com, wens@csie.org Cc: linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, mylene.josserand@bootlin.com, thomas.petazzoni@bootlin.com Subject: [PATCH v3 1/3] Input: edt-ft5x06 - Add support for regulator Date: Wed, 18 Jul 2018 20:27:17 +0200 Message-Id: <20180718182719.29663-2-mylene.josserand@bootlin.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180718182719.29663-1-mylene.josserand@bootlin.com> References: <20180718182719.29663-1-mylene.josserand@bootlin.com> MIME-Version: 1.0 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add the support of regulator to use it as VCC source. Signed-off-by: Mylène Josserand --- .../bindings/input/touchscreen/edt-ft5x06.txt | 1 + drivers/input/touchscreen/edt-ft5x06.c | 29 ++++++++++++++++++++++ 2 files changed, 30 insertions(+) diff --git a/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.txt b/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.txt index 025cf8c9324a..48e975b9c1aa 100644 --- a/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.txt +++ b/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.txt @@ -30,6 +30,7 @@ Required properties: Optional properties: - reset-gpios: GPIO specification for the RESET input - wake-gpios: GPIO specification for the WAKE input + - vcc-supply: Regulator that supplies the touchscreen - pinctrl-names: should be "default" - pinctrl-0: a phandle pointing to the pin settings for the diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index 1e18ca0d1b4e..aa94494b06b5 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -39,6 +39,7 @@ #include #include #include +#include #define WORK_REGISTER_THRESHOLD 0x00 #define WORK_REGISTER_REPORT_RATE 0x08 @@ -91,6 +92,7 @@ struct edt_ft5x06_ts_data { struct touchscreen_properties prop; u16 num_x; u16 num_y; + struct regulator *vcc; struct gpio_desc *reset_gpio; struct gpio_desc *wake_gpio; @@ -991,6 +993,22 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client, tsdata->max_support_points = chip_data->max_support_points; + tsdata->vcc = devm_regulator_get(&client->dev, "vcc"); + if (IS_ERR(tsdata->vcc)) { + error = PTR_ERR(tsdata->vcc); + if (error != -EPROBE_DEFER) + dev_err(&client->dev, "failed to request regulator: %d\n", + error); + return error; + } + + error = regulator_enable(tsdata->vcc); + if (error < 0) { + dev_err(&client->dev, "failed to enable vcc: %d\n", + error); + return error; + } + tsdata->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(tsdata->reset_gpio)) { @@ -1120,20 +1138,31 @@ static int edt_ft5x06_ts_remove(struct i2c_client *client) static int __maybe_unused edt_ft5x06_ts_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); + struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client); if (device_may_wakeup(dev)) enable_irq_wake(client->irq); + regulator_disable(tsdata->vcc); + return 0; } static int __maybe_unused edt_ft5x06_ts_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); + struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client); + int ret; if (device_may_wakeup(dev)) disable_irq_wake(client->irq); + ret = regulator_enable(tsdata->vcc); + if (ret < 0) { + dev_err(dev, "failed to enable vcc: %d\n", ret); + return ret; + } + return 0; }