From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751192AbeAWIEX convert rfc822-to-8bit (ORCPT ); Tue, 23 Jan 2018 03:04:23 -0500 Received: from smtprelay05.ispgateway.de ([80.67.31.93]:30604 "EHLO smtprelay05.ispgateway.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751080AbeAWIEV (ORCPT ); Tue, 23 Jan 2018 03:04:21 -0500 Date: Tue, 23 Jan 2018 09:04:14 +0100 From: Lothar =?UTF-8?B?V2HDn21hbm4=?= To: Dmitry Torokhov Cc: =?UTF-8?B?TXlsw6huZQ==?= Josserand , Mark Rutland , devicetree@vger.kernel.org, Russell King - ARM Linux , lkml , Quentin Schulz , Chen-Yu Tsai , Rob Herring , "linux-input@vger.kernel.org" , Maxime Ripard , Thomas Petazzoni , linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v2 1/2] Input: edt-ft5x06 - Add support for regulator Message-ID: <20180123090414.47bcf118@karo-electronics.de> In-Reply-To: References: <20171228163336.28131-1-mylene.josserand@free-electrons.com> <20171228163336.28131-2-mylene.josserand@free-electrons.com> Organization: Ka-Ro electronics GmbH MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT X-Df-Sender: bHdAa2Fyby1lbGVjdHJvbmljcy5kZQ== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Mon, 22 Jan 2018 09:42:08 -0800 Dmitry Torokhov wrote: > Hi Mylène, > > On Thu, Dec 28, 2017 at 8:33 AM, Mylène Josserand > wrote: > > 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 | 33 ++++++++++++++++++++++ > > 2 files changed, 34 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 c53a3d7239e7..5ee14a25a382 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; > > @@ -993,6 +995,23 @@ 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); > > + dev_err(&client->dev, "failed to request regulator: %d\n", > > + error); > I would check for -EPROBE_DEFER here and omit the error message in this case. Lothar Waßmann