From mboxrd@z Thu Jan 1 00:00:00 1970 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 00A7BC433F5 for ; Thu, 25 Nov 2021 12:58:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350555AbhKYNB4 (ORCPT ); Thu, 25 Nov 2021 08:01:56 -0500 Received: from box.trvn.ru ([194.87.146.52]:49107 "EHLO box.trvn.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347848AbhKYNA1 (ORCPT ); Thu, 25 Nov 2021 08:00:27 -0500 Received: from authenticated-user (box.trvn.ru [194.87.146.52]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by box.trvn.ru (Postfix) with ESMTPSA id 74CD640519; Thu, 25 Nov 2021 17:57:11 +0500 (+05) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=trvn.ru; s=mail; t=1637845031; bh=sgrmM7Ln+ky2I46p33Yv2KpJD3kkLM7KXUmHNEwxmhk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VNbGtOm5ZReb/wxIxwLt1zbe+SHHUtp0gNS2X/ZookImGbT6xO8bGBQAMQlbDf9S4 Yt7izcHHEmDHFvdKFyvW/Rn9YlqnHrTVvo/V4hSleFbskeEkUSQcVFVvL1xZ9hEA0z cJkBSh8cBRcNE0ZI+q6SwWFRBB+D3ynzKMcYcIlVlDoukYCRZAsxEdkE2rH4puLkXa 0HuqtObLyogSGtYiQQIiKJU3JT9SjcA48ysXBNTKINrc+hKjOMZsIh7AGjOm6dxYwW ktygKy6JW3QyraFYXTZD2Td8C8yGyMO4bHvkRcx9iu9ePM2MHlFYgQyw7PHhnUd+ix 7CGyotdQvrOoA== From: Nikita Travkin To: jic23@kernel.org Cc: lars@metafoo.de, robh+dt@kernel.org, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Nikita Travkin Subject: [PATCH 2/2] iio: ltr501: Export near level property for proximity sensor Date: Thu, 25 Nov 2021 17:56:46 +0500 Message-Id: <20211125125646.54831-2-nikita@trvn.ru> In-Reply-To: <20211125125646.54831-1-nikita@trvn.ru> References: <20211125125646.54831-1-nikita@trvn.ru> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Userspace tools like iio-sensor-proxy need to know the proximity level that should be considered "near". This value is hardware-specific and can be defined via the devicetree. Allow the driver to export the near level. Signed-off-by: Nikita Travkin --- The changes are mostly copied from vcnl4000 patchset introducing the property: https://lore.kernel.org/linux-iio/cover.1586094535.git.agx@sigxcpu.org/ --- drivers/iio/light/ltr501.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c index 64ba04c275e8..47d61ec2bb50 100644 --- a/drivers/iio/light/ltr501.c +++ b/drivers/iio/light/ltr501.c @@ -166,6 +166,7 @@ struct ltr501_data { struct regmap_field *reg_ps_rate; struct regmap_field *reg_als_prst; struct regmap_field *reg_ps_prst; + uint32_t near_level; }; static const struct ltr501_samp_table ltr501_als_samp_table[] = { @@ -525,6 +526,25 @@ static int ltr501_write_intr_prst(struct ltr501_data *data, return -EINVAL; } +static ssize_t ltr501_read_near_level(struct iio_dev *indio_dev, + uintptr_t priv, + const struct iio_chan_spec *chan, + char *buf) +{ + struct ltr501_data *data = iio_priv(indio_dev); + + return sprintf(buf, "%u\n", data->near_level); +} + +static const struct iio_chan_spec_ext_info ltr501_ext_info[] = { + { + .name = "nearlevel", + .shared = IIO_SEPARATE, + .read = ltr501_read_near_level, + }, + { /* sentinel */ } +}; + static const struct iio_event_spec ltr501_als_event_spec[] = { { .type = IIO_EV_TYPE_THRESH, @@ -609,6 +629,7 @@ static const struct iio_chan_spec ltr501_channels[] = { }, .event_spec = ltr501_pxs_event_spec, .num_event_specs = ARRAY_SIZE(ltr501_pxs_event_spec), + .ext_info = ltr501_ext_info, }, IIO_CHAN_SOFT_TIMESTAMP(3), }; @@ -1531,6 +1552,10 @@ static int ltr501_probe(struct i2c_client *client, if ((partid >> 4) != data->chip_info->partid) return -ENODEV; + if (device_property_read_u32(&client->dev, "proximity-near-level", + &data->near_level)) + data->near_level = 0; + indio_dev->info = data->chip_info->info; indio_dev->channels = data->chip_info->channels; indio_dev->num_channels = data->chip_info->no_channels; -- 2.30.2