From patchwork Mon Feb 17 13:44:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Guido_G=C3=BCnther?= X-Patchwork-Id: 11386505 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DEF2D17F0 for ; Mon, 17 Feb 2020 13:44:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C2633208C4 for ; Mon, 17 Feb 2020 13:44:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728123AbgBQNoy (ORCPT ); Mon, 17 Feb 2020 08:44:54 -0500 Received: from honk.sigxcpu.org ([24.134.29.49]:39794 "EHLO honk.sigxcpu.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728204AbgBQNoy (ORCPT ); Mon, 17 Feb 2020 08:44:54 -0500 Received: from localhost (localhost [127.0.0.1]) by honk.sigxcpu.org (Postfix) with ESMTP id 7C98FFB03; Mon, 17 Feb 2020 14:44:52 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at honk.sigxcpu.org Received: from honk.sigxcpu.org ([127.0.0.1]) by localhost (honk.sigxcpu.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Vc5tF6rMCtSP; Mon, 17 Feb 2020 14:44:51 +0100 (CET) Received: by bogon.sigxcpu.org (Postfix, from userid 1000) id 5EE8A40BE3; Mon, 17 Feb 2020 14:44:48 +0100 (CET) From: =?utf-8?q?Guido_G=C3=BCnther?= To: Tomas Novotny , Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler , "Angus Ainslie (Purism)" , =?utf-8?q?Guido_G=C3=BCnther?= , Marco Felsch , Thomas Gleixner , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/2] iio: vcnl4000: Export near level property for proximity sensor Date: Mon, 17 Feb 2020 14:44:47 +0100 Message-Id: <4a8075acde807225a2d9aeb4164fff881013bbe2.1581947007.git.agx@sigxcpu.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: References: MIME-Version: 1.0 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org When an object can be considered close to the sensor is hardware dependent. Allowing to configure the property via device tree allows to configure this device specific value. This is useful for e.g. iio-sensor-proxy to indicate to userspace if an object is close to the sensor. Signed-off-by: Guido Günther --- drivers/iio/light/vcnl4000.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c index 38fcd9a26046..7111118e0fda 100644 --- a/drivers/iio/light/vcnl4000.c +++ b/drivers/iio/light/vcnl4000.c @@ -83,6 +83,7 @@ struct vcnl4000_data { struct mutex vcnl4000_lock; struct vcnl4200_channel vcnl4200_al; struct vcnl4200_channel vcnl4200_ps; + uint32_t near_level; }; struct vcnl4000_chip_spec { @@ -342,6 +343,26 @@ static const struct vcnl4000_chip_spec vcnl4000_chip_spec_cfg[] = { }, }; + +static ssize_t vcnl4000_read_near_level(struct iio_dev *indio_dev, + uintptr_t priv, + const struct iio_chan_spec *chan, + char *buf) +{ + struct vcnl4000_data *data = iio_priv(indio_dev); + + return sprintf(buf, "%u\n", data->near_level); +} + +static const struct iio_chan_spec_ext_info vcnl4000_ext_info[] = { + { + .name = "near_level", + .shared = IIO_SEPARATE, + .read = vcnl4000_read_near_level, + }, + { /* sentinel */ } +}; + static const struct iio_chan_spec vcnl4000_channels[] = { { .type = IIO_LIGHT, @@ -350,6 +371,7 @@ static const struct iio_chan_spec vcnl4000_channels[] = { }, { .type = IIO_PROXIMITY, .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + .ext_info = vcnl4000_ext_info, } }; @@ -439,6 +461,10 @@ static int vcnl4000_probe(struct i2c_client *client, dev_dbg(&client->dev, "%s Ambient light/proximity sensor, Rev: %02x\n", data->chip_spec->prod, data->rev); + if (device_property_read_u32(&client->dev, "near-level", + &data->near_level) < 0) + data->near_level = 0; + indio_dev->dev.parent = &client->dev; indio_dev->info = &vcnl4000_info; indio_dev->channels = vcnl4000_channels;