From patchwork Sun Apr 5 13:50:31 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: 11474707 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 114C2913 for ; Sun, 5 Apr 2020 13:50:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EE621206F5 for ; Sun, 5 Apr 2020 13:50:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727349AbgDENuo (ORCPT ); Sun, 5 Apr 2020 09:50:44 -0400 Received: from honk.sigxcpu.org ([24.134.29.49]:44858 "EHLO honk.sigxcpu.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727242AbgDENum (ORCPT ); Sun, 5 Apr 2020 09:50:42 -0400 Received: from localhost (localhost [127.0.0.1]) by honk.sigxcpu.org (Postfix) with ESMTP id 433A9FB05; Sun, 5 Apr 2020 15:50:40 +0200 (CEST) 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 yj7JZvhU6cgW; Sun, 5 Apr 2020 15:50:38 +0200 (CEST) Received: by bogon.sigxcpu.org (Postfix, from userid 1000) id 13127414DB; Sun, 5 Apr 2020 15:50:33 +0200 (CEST) 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, devicetree@vger.kernel.org, Andy Shevchenko , Nishant Malpani Subject: [PATCH v4 4/5] iio: vcnl4000: Export near level property for proximity sensor Date: Sun, 5 Apr 2020 15:50:31 +0200 Message-Id: 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 | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c index ec803c1e81df..985cc39ede8e 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 { @@ -343,6 +344,25 @@ 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 = "nearlevel", + .shared = IIO_SEPARATE, + .read = vcnl4000_read_near_level, + }, + { /* sentinel */ } +}; + static const struct iio_chan_spec vcnl4000_channels[] = { { .type = IIO_LIGHT, @@ -351,6 +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, } }; @@ -440,6 +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, "proximity-near-level", + &data->near_level)) + data->near_level = 0; + indio_dev->dev.parent = &client->dev; indio_dev->info = &vcnl4000_info; indio_dev->channels = vcnl4000_channels;