From patchwork Sun Jan 27 18:19:14 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomasz Duszynski X-Patchwork-Id: 10782971 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E670F6C2 for ; Sun, 27 Jan 2019 18:19:52 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DA19E2AAEE for ; Sun, 27 Jan 2019 18:19:52 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CDEC22AAF0; Sun, 27 Jan 2019 18:19:52 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham 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 F33792AAEE for ; Sun, 27 Jan 2019 18:19:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726979AbfA0STv (ORCPT ); Sun, 27 Jan 2019 13:19:51 -0500 Received: from mail-lf1-f67.google.com ([209.85.167.67]:40171 "EHLO mail-lf1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726523AbfA0STt (ORCPT ); Sun, 27 Jan 2019 13:19:49 -0500 Received: by mail-lf1-f67.google.com with SMTP id v5so10228564lfe.7; Sun, 27 Jan 2019 10:19:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=s8FW3yOWkT/inYnZoMrQL95QX1ak/p58NExF+/a9J1g=; b=p4DEuawZXItr7E0CK/yEFeXDSY/1Atr487QhxanHBhtDAL+ftqNNNNePLuIVPN4oBK eQdoUWHLRBoikJ43neS98XloMfTR6dvebA2JvUbIHqY1+7wu576gEaZW1BRrXml5Jk5y ZYmTNEKPCPBskidBYJyTC0PvfoioXDu231x+ZBEllHE/iohiHN7xJh/oqqx9HP9WECoA m9yxmkIycgqcYQOJ7gq3uu9jxTbsRqQGEWqBXJmspZmzv2NYtIdfxgWhHmLJMqyBV7Fw ki0TilPaDTVlp5hNFIVV1GCiHPgWcIgalxxGq0edD7O2XLnmBNEBXNvCqO80QhkNn2MP 0ziA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=s8FW3yOWkT/inYnZoMrQL95QX1ak/p58NExF+/a9J1g=; b=VjDvyxdcrRVFX0MrSiMziJI7FLtb7uwHKOmWt3IhIp6rWXcbejM4navfR8FlrTE45P l1MgS2M34ubWwstx6Gjf7Rm7NanutQj2SHehJ/JpByBPXVlvVijiSa5+Xs2gbftxQmzn FfR6v4jEwtt9pMUBMIsyPMIt4U1QQ7L4PlzLwlmu5I6mCNCJ40PJAvwd4hVuOrosiZBu afdCGOXBSWcTqf/GMvK+o+TcbBYaGvWIcYVbt6tApmBHx2hUX5EtL3cremBCAoHbvCTz T21lV686Rth82yb0G3pXGciyqErG/sL9OD6H7irBhUWorLlF34UjLyf94YRVx8vh3B5w U9Rg== X-Gm-Message-State: AJcUukd3c0cIBoxv7AIp2XPHl7pcadbQC7yJvNSzyHasOf3aFGuWE9mb /bnf5WlcQo1xP+CcWVoqyXObWhHF4dg= X-Google-Smtp-Source: ALg8bN6klWMlTs/hapd4pt/vwRl2Qhjoks41290todBU9IBh0w0/Eu5KNudZAUslL6MrCYBwpU6B2w== X-Received: by 2002:a19:980f:: with SMTP id a15mr14121469lfe.103.1548613186461; Sun, 27 Jan 2019 10:19:46 -0800 (PST) Received: from arch.domain.name (89-70-37-207.dynamic.chello.pl. [89.70.37.207]) by smtp.gmail.com with ESMTPSA id c20sm2518923lfj.67.2019.01.27.10.19.45 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 27 Jan 2019 10:19:45 -0800 (PST) From: Tomasz Duszynski To: linux-iio@vger.kernel.org Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, johan@kernel.org, robh@kernel.org, jic23@jic23.retrosnub.co.uk, Tomasz Duszynski Subject: [PATCH v2 1/3] iio: chemical: add support for Plantower PMS7003 sensor Date: Sun, 27 Jan 2019 19:19:14 +0100 Message-Id: <20190127181916.19948-2-tduszyns@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190127181916.19948-1-tduszyns@gmail.com> References: <20190127181916.19948-1-tduszyns@gmail.com> MIME-Version: 1.0 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add support for Plantower PMS7003 particulate matter sensor. Signed-off-by: Tomasz Duszynski --- drivers/iio/chemical/Kconfig | 10 + drivers/iio/chemical/Makefile | 1 + drivers/iio/chemical/pms7003.c | 343 +++++++++++++++++++++++++++++++++ 3 files changed, 354 insertions(+) create mode 100644 drivers/iio/chemical/pms7003.c diff --git a/drivers/iio/chemical/Kconfig b/drivers/iio/chemical/Kconfig index 57832b4360e9..d5d146e9e372 100644 --- a/drivers/iio/chemical/Kconfig +++ b/drivers/iio/chemical/Kconfig @@ -61,6 +61,16 @@ config IAQCORE iAQ-Core Continuous/Pulsed VOC (Volatile Organic Compounds) sensors +config PMS7003 + tristate "Plantower PMS7003 particulate matter sensor" + depends on SERIAL_DEV_BUS + help + Say Y here to build support for the Plantower PMS7003 particulate + matter sensor. + + To compile this driver as a module, choose M here: the module will + be called pms7003. + config SPS30 tristate "SPS30 particulate matter sensor" depends on I2C diff --git a/drivers/iio/chemical/Makefile b/drivers/iio/chemical/Makefile index 65bf0f89c0e4..f5d1365acb49 100644 --- a/drivers/iio/chemical/Makefile +++ b/drivers/iio/chemical/Makefile @@ -9,6 +9,7 @@ obj-$(CONFIG_BME680_I2C) += bme680_i2c.o obj-$(CONFIG_BME680_SPI) += bme680_spi.o obj-$(CONFIG_CCS811) += ccs811.o obj-$(CONFIG_IAQCORE) += ams-iaq-core.o +obj-$(CONFIG_PMS7003) += pms7003.o obj-$(CONFIG_SENSIRION_SGP30) += sgp30.o obj-$(CONFIG_SPS30) += sps30.o obj-$(CONFIG_VZ89X) += vz89x.o diff --git a/drivers/iio/chemical/pms7003.c b/drivers/iio/chemical/pms7003.c new file mode 100644 index 000000000000..b1ac4aeea989 --- /dev/null +++ b/drivers/iio/chemical/pms7003.c @@ -0,0 +1,343 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Plantower PMS7003 particulate matter sensor driver + * + * Copyright (c) Tomasz Duszynski + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define PMS7003_DRIVER_NAME "pms7003" + +#define PMS7003_MAGIC 0x424d +/* last 2 data bytes hold frame checksum */ +#define PMS7003_MAX_DATA_LENGTH 28 +#define PMS7003_CHECKSUM_LENGTH 2 +#define PMS7003_PM10_OFFSET 10 +#define PMS7003_PM2P5_OFFSET 8 +#define PMS7003_PM1_OFFSET 6 + +#define PMS7003_TIMEOUT msecs_to_jiffies(6000) +#define PMS7003_CMD_LENGTH 7 +#define PMS7003_PM_MAX 1000 +#define PMS7003_PM_MIN 0 + +enum { + PM1, + PM2P5, + PM10, +}; + +enum pms7003_cmd { + CMD_WAKEUP, + CMD_ENTER_PASSIVE_MODE, + CMD_READ_PASSIVE, + CMD_SLEEP, +}; + +/* + * commands have following format: + * + * +------+------+-----+------+-----+-----------+-----------+ + * | 0x42 | 0x4d | cmd | 0x00 | arg | cksum msb | cksum lsb | + * +------+------+-----+------+-----+-----------+-----------+ + */ +static const u8 pms7003_cmd_tbl[][PMS7003_CMD_LENGTH] = { + [CMD_WAKEUP] = { 0x42, 0x4d, 0xe4, 0x00, 0x01, 0x01, 0x74 }, + [CMD_ENTER_PASSIVE_MODE] = { 0x42, 0x4d, 0xe1, 0x00, 0x00, 0x01, 0x70 }, + [CMD_READ_PASSIVE] = { 0x42, 0x4d, 0xe2, 0x00, 0x00, 0x01, 0x71 }, + [CMD_SLEEP] = { 0x42, 0x4d, 0xe4, 0x00, 0x00, 0x01, 0x73 }, +}; + +struct pms7003_frame { + u8 data[PMS7003_MAX_DATA_LENGTH]; + u16 expected_length; + u16 length; +}; + +struct pms7003_state { + struct serdev_device *serdev; + struct pms7003_frame frame; + struct completion frame_ready; + struct mutex lock; /* must be held whenever state gets touched */ +}; + +static int pms7003_do_cmd(struct pms7003_state *state, enum pms7003_cmd cmd) +{ + int ret; + + ret = serdev_device_write(state->serdev, pms7003_cmd_tbl[cmd], + PMS7003_CMD_LENGTH, PMS7003_TIMEOUT); + if (ret < PMS7003_CMD_LENGTH) + return ret < 0 ? ret : -EIO; + + ret = wait_for_completion_interruptible_timeout(&state->frame_ready, + PMS7003_TIMEOUT); + if (!ret) + ret = -ETIMEDOUT; + + return ret < 0 ? ret : 0; +} + +static u16 pms7003_get_pm(const u8 *data) +{ + return clamp_val(get_unaligned_be16(data), + PMS7003_PM_MIN, PMS7003_PM_MAX); +} + +static irqreturn_t pms7003_trigger_handler(int irq, void *p) +{ + struct iio_poll_func *pf = p; + struct iio_dev *indio_dev = pf->indio_dev; + struct pms7003_state *state = iio_priv(indio_dev); + struct pms7003_frame *frame = &state->frame; + u16 data[3 + 1 + 4]; /* PM1, PM2P5, PM10, padding, timestamp */ + int ret; + + mutex_lock(&state->lock); + ret = pms7003_do_cmd(state, CMD_READ_PASSIVE); + if (ret) { + mutex_unlock(&state->lock); + goto err; + } + + data[PM1] = pms7003_get_pm(frame->data + PMS7003_PM1_OFFSET); + data[PM2P5] = pms7003_get_pm(frame->data + PMS7003_PM2P5_OFFSET); + data[PM10] = pms7003_get_pm(frame->data + PMS7003_PM10_OFFSET); + mutex_unlock(&state->lock); + + iio_push_to_buffers_with_timestamp(indio_dev, data, + iio_get_time_ns(indio_dev)); +err: + iio_trigger_notify_done(indio_dev->trig); + + return IRQ_HANDLED; +} + +static int pms7003_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct pms7003_state *state = iio_priv(indio_dev); + struct pms7003_frame *frame = &state->frame; + int ret; + + switch (mask) { + case IIO_CHAN_INFO_PROCESSED: + switch (chan->type) { + case IIO_MASSCONCENTRATION: + mutex_lock(&state->lock); + ret = pms7003_do_cmd(state, CMD_READ_PASSIVE); + if (ret) { + mutex_unlock(&state->lock); + return ret; + } + + *val = pms7003_get_pm(frame->data + chan->address); + mutex_unlock(&state->lock); + + return IIO_VAL_INT; + default: + return -EINVAL; + } + } + + return -EINVAL; +} + + +static const struct iio_info pms7003_info = { + .read_raw = pms7003_read_raw, +}; + +#define PMS7003_CHAN(_index, _mod, _addr) { \ + .type = IIO_MASSCONCENTRATION, \ + .modified = 1, \ + .channel2 = IIO_MOD_ ## _mod, \ + .address = _addr, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), \ + .scan_index = _index, \ + .scan_type = { \ + .sign = 'u', \ + .realbits = 10, \ + .storagebits = 16, \ + .endianness = IIO_CPU, \ + }, \ +} + +static const struct iio_chan_spec pms7003_channels[] = { + PMS7003_CHAN(0, PM1, PMS7003_PM1_OFFSET), + PMS7003_CHAN(1, PM2P5, PMS7003_PM2P5_OFFSET), + PMS7003_CHAN(2, PM10, PMS7003_PM10_OFFSET), + IIO_CHAN_SOFT_TIMESTAMP(3), +}; + +static u16 pms7003_calc_checksum(struct pms7003_frame *frame) +{ + u16 checksum = (PMS7003_MAGIC >> 8) + (u8)PMS7003_MAGIC + + (frame->length >> 8) + (u8)frame->length; + int i; + + for (i = 0; i < frame->length - PMS7003_CHECKSUM_LENGTH; i++) + checksum += frame->data[i]; + + return checksum; +} + +static bool pms7003_frame_is_okay(struct pms7003_frame *frame) +{ + int offset = frame->length - PMS7003_CHECKSUM_LENGTH; + u16 checksum = get_unaligned_be16(frame->data + offset); + + return checksum == pms7003_calc_checksum(frame); +} + +static int pms7003_receive_buf(struct serdev_device *serdev, + const unsigned char *buf, size_t size) +{ + struct iio_dev *indio_dev = serdev_device_get_drvdata(serdev); + struct pms7003_state *state = iio_priv(indio_dev); + struct pms7003_frame *frame = &state->frame; + int num; + + if (!frame->expected_length) { + u16 magic; + + /* wait for SOF and data length */ + if (size < 4) + return 0; + + magic = get_unaligned_be16(buf); + if (magic != PMS7003_MAGIC) + return 2; + + num = get_unaligned_be16(buf + 2); + if (num <= PMS7003_MAX_DATA_LENGTH) { + frame->expected_length = num; + frame->length = 0; + } + + return 4; + } + + num = min(size, (size_t)(frame->expected_length - frame->length)); + memcpy(frame->data + frame->length, buf, num); + frame->length += num; + + if (frame->length == frame->expected_length) { + if (pms7003_frame_is_okay(frame)) + complete(&state->frame_ready); + + frame->expected_length = 0; + } + + return num; +} + +static const struct serdev_device_ops pms7003_serdev_ops = { + .receive_buf = pms7003_receive_buf, + .write_wakeup = serdev_device_write_wakeup, +}; + +static void pms7003_stop(void *data) +{ + struct pms7003_state *state = data; + + pms7003_do_cmd(state, CMD_SLEEP); +} + +static const unsigned long pms7003_scan_masks[] = { 0x07, 0x00 }; + +static int pms7003_probe(struct serdev_device *serdev) +{ + struct pms7003_state *state; + struct iio_dev *indio_dev; + int ret; + + indio_dev = devm_iio_device_alloc(&serdev->dev, sizeof(*state)); + if (!indio_dev) + return -ENOMEM; + + state = iio_priv(indio_dev); + serdev_device_set_drvdata(serdev, indio_dev); + state->serdev = serdev; + indio_dev->dev.parent = &serdev->dev; + indio_dev->info = &pms7003_info; + indio_dev->name = PMS7003_DRIVER_NAME; + indio_dev->channels = pms7003_channels, + indio_dev->num_channels = ARRAY_SIZE(pms7003_channels); + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->available_scan_masks = pms7003_scan_masks; + + mutex_init(&state->lock); + init_completion(&state->frame_ready); + + serdev_device_set_client_ops(serdev, &pms7003_serdev_ops); + ret = devm_serdev_device_open(&serdev->dev, serdev); + if (ret) + return ret; + + serdev_device_set_baudrate(serdev, 9600); + serdev_device_set_flow_control(serdev, false); + + ret = serdev_device_set_parity(serdev, SERDEV_PARITY_NONE); + if (ret) + return ret; + + ret = pms7003_do_cmd(state, CMD_WAKEUP); + if (ret) { + dev_err(&serdev->dev, "failed to wakeup sensor\n"); + return ret; + } + + ret = pms7003_do_cmd(state, CMD_ENTER_PASSIVE_MODE); + if (ret) { + dev_err(&serdev->dev, "failed to enter passive mode\n"); + return ret; + } + + ret = devm_add_action_or_reset(&serdev->dev, pms7003_stop, state); + if (ret) + return ret; + + ret = devm_iio_triggered_buffer_setup(&serdev->dev, indio_dev, NULL, + pms7003_trigger_handler, NULL); + if (ret) + return ret; + + return devm_iio_device_register(&serdev->dev, indio_dev); +} + +static const struct of_device_id pms7003_of_match[] = { + { .compatible = "plantower,pms7003" }, + { } +}; +MODULE_DEVICE_TABLE(of, pms7003_of_match); + +static struct serdev_device_driver pms7003_driver = { + .driver = { + .name = PMS7003_DRIVER_NAME, + .of_match_table = pms7003_of_match, + }, + .probe = pms7003_probe, +}; +module_serdev_device_driver(pms7003_driver); + +MODULE_AUTHOR("Tomasz Duszynski "); +MODULE_DESCRIPTION("Plantower PMS7003 particulate matter sensor driver"); +MODULE_LICENSE("GPL v2"); From patchwork Sun Jan 27 18:19:15 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomasz Duszynski X-Patchwork-Id: 10782975 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E14FC186D for ; Sun, 27 Jan 2019 18:20:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D85412AAF0 for ; Sun, 27 Jan 2019 18:20:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CC6B32AAEF; 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[89.70.37.207]) by smtp.gmail.com with ESMTPSA id c20sm2518923lfj.67.2019.01.27.10.19.46 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 27 Jan 2019 10:19:47 -0800 (PST) From: Tomasz Duszynski To: linux-iio@vger.kernel.org Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, johan@kernel.org, robh@kernel.org, jic23@jic23.retrosnub.co.uk, Tomasz Duszynski Subject: [PATCH v2 2/3] dt-bindings: add Plantower to the vendor prefixes Date: Sun, 27 Jan 2019 19:19:15 +0100 Message-Id: <20190127181916.19948-3-tduszyns@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190127181916.19948-1-tduszyns@gmail.com> References: <20190127181916.19948-1-tduszyns@gmail.com> MIME-Version: 1.0 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add Plantower to the vendor prefixes. Signed-off-by: Tomasz Duszynski Reviewed-by: Rob Herring --- Documentation/devicetree/bindings/vendor-prefixes.txt | 1 + 1 file changed, 1 insertion(+) -- 2.20.1 diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index 3cfe0c8b8250..fa391a650f3a 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -300,6 +300,7 @@ phytec PHYTEC Messtechnik GmbH picochip Picochip Ltd pine64 Pine64 pixcir PIXCIR MICROELECTRONICS Co., Ltd +plantower Plantower Co., Ltd plathome Plat'Home Co., Ltd. plda PLDA plx Broadcom Corporation (formerly PLX Technology) From patchwork Sun Jan 27 18:19:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomasz Duszynski X-Patchwork-Id: 10782973 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B6F6713BF for ; Sun, 27 Jan 2019 18:20:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A91572AAEF for ; Sun, 27 Jan 2019 18:20:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 980622AAF2; Sun, 27 Jan 2019 18:20:25 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham 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 4457F2AAEF for ; Sun, 27 Jan 2019 18:20:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727039AbfA0ST7 (ORCPT ); Sun, 27 Jan 2019 13:19:59 -0500 Received: from mail-lj1-f195.google.com ([209.85.208.195]:33156 "EHLO mail-lj1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726967AbfA0STv (ORCPT ); Sun, 27 Jan 2019 13:19:51 -0500 Received: by mail-lj1-f195.google.com with SMTP id v1-v6so12345131ljd.0; Sun, 27 Jan 2019 10:19:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=nhlUzCAvM06ADAGBHQ3dulgtXj987yKS2acj/AIOnU0=; b=ZHYyoEHk8//rkhJKXahdN5AhfhYySnzpwt8f5LS7lODEWdKlQ73aTAtsJNLWYBXt8/ SRmqOTzlFZoMRpPyCxw5qFmPcobSdNBomKxiXFoCkKc7L97/my804+SZTkGZKfwHPdTl ScwrPEvahIpNIdFUrRRHcXC9qHG+SijiNoFs8Hp0C/oqOSoCpBn+URYl2+zFIULPEf1Q XX/T8UZ69mtdLa76Azr2k3T3JBIjieptaq9bDFX8jm1BBsL7hYWp84/uk/u3smWBneiy lFjWm+qO9cmUJoTqA9lz+ZwpASOdR1Yy8VsXmLqO+kepwI/PwJLTjKDvynAnVWfet6MN BPaw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=nhlUzCAvM06ADAGBHQ3dulgtXj987yKS2acj/AIOnU0=; b=VjKbSc8vpkW4RYqKXE4PcTj6nJMIiWmO6+st00DKt9V9YaRq5znz4JL0EEYk/MwkdQ etRl+daDskuj/ARxIoL4QbtsDWbTzw8xUEkT/BXm3VFaLVZJk6v9/+xmgrNT/d3KX0ra UiE1P3aYG00q7KU/lKflknptZC9/GTKGlB0IRZRcxU0qZx7Bed+F3WjxKq6WdUvF0dGX I5hbR/mX4FHpkseMNdM0xLdZdxhWqYk7PSBxTp7UlQhE95F/hwlxb/namsbHGlJo+MHj BMjZffA8EwXf60Rbgbe6ApdrhVlUgEfNb2/Hcstd4HAWEWoIOFlLY1ufSFwyfgfcT6xt kMNg== X-Gm-Message-State: AJcUukd4kbiovCvAdkm0p6GaiH2FxHY47G/iGUe9Txg+EDoiUCUHfibg R3Aal7w/KJ82AA9R5Qnl4hurvvyNx+w= X-Google-Smtp-Source: ALg8bN6At6wLqtMz2yagtTXCRXKa6ozCk/CDef73N5Qq1dQS/Qa6FpdnZ3HwZtKZ2TeGuUx7CMjJyg== X-Received: by 2002:a2e:7011:: with SMTP id l17-v6mr14566152ljc.147.1548613189101; Sun, 27 Jan 2019 10:19:49 -0800 (PST) Received: from arch.domain.name (89-70-37-207.dynamic.chello.pl. [89.70.37.207]) by smtp.gmail.com with ESMTPSA id c20sm2518923lfj.67.2019.01.27.10.19.47 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 27 Jan 2019 10:19:48 -0800 (PST) From: Tomasz Duszynski To: linux-iio@vger.kernel.org Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, johan@kernel.org, robh@kernel.org, jic23@jic23.retrosnub.co.uk, Tomasz Duszynski Subject: [PATCH v2 3/3] dt-bindings: iio: chemical: pms7003: add device tree support Date: Sun, 27 Jan 2019 19:19:16 +0100 Message-Id: <20190127181916.19948-4-tduszyns@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190127181916.19948-1-tduszyns@gmail.com> References: <20190127181916.19948-1-tduszyns@gmail.com> MIME-Version: 1.0 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add device tree support for Plantower PMS7003 particulate matter sensor. Signed-off-by: Tomasz Duszynski --- .../iio/chemical/plantower,pms7003.txt | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/chemical/plantower,pms7003.txt diff --git a/Documentation/devicetree/bindings/iio/chemical/plantower,pms7003.txt b/Documentation/devicetree/bindings/iio/chemical/plantower,pms7003.txt new file mode 100644 index 000000000000..e4c7f2fb1e30 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/chemical/plantower,pms7003.txt @@ -0,0 +1,19 @@ +* Plantower PMS7003 particulate matter sensor + +Required properties: +- compatible: must be "plantower,pms7003" + +Optional properties: +- vcc-supply: phandle to the regulator that provides power to the sensor +- set-gpios: phandle to the GPIO connected to the SET line +- reset-gpios: phandle to the GPIO connected to the RESET line + +Refer to serial/slave-device.txt for generic serial attached device bindings. + +Example: + +&uart0 { + pms7003 { + compatible = "plantower,pms7003"; + }; +};