From patchwork Fri Dec 29 09:24:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Petre Rodan X-Patchwork-Id: 13506417 Received: from mail.subdimension.ro (skycaves.subdimension.ro [172.104.132.142]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AFE58125B2; Fri, 29 Dec 2023 09:25:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=subdimension.ro Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=subdimension.ro Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=subdimension.ro header.i=@subdimension.ro header.b="UkNGK/Zw" Received: from localhost.localdomain (unknown [188.24.94.216]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mail.subdimension.ro (Postfix) with ESMTPSA id 1BB1928B597; Fri, 29 Dec 2023 09:25:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=subdimension.ro; s=skycaves; t=1703841909; bh=eKbNnj7orFcc/inNQ34FTt139oscjUlCdr8IE4HhtlA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=UkNGK/ZwExSm4NC5CgKSJSfwHYZVzwW0GL2w9wfyBiRNPgV8vTO8daIbMzMrp9ffk KpFhgg+qAL1l6svxEscx6OnDXPQ2gMQIg5fYooZ2hdxY0x/3S7C5BfNyiwMkg/WwJP Y+dPL7Aw0gUmSnIK6WvR3O/e8addRp2S9Y6I+r1U= From: Petre Rodan To: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Petre Rodan , Andreas Klinger , Jonathan Cameron , Lars-Peter Clausen , Andy Shevchenko , Angel Iglesias , Matti Vaittinen Subject: [PATCH v3 10/10] iio: pressure: mprls0025pa add SPI driver Date: Fri, 29 Dec 2023 11:24:38 +0200 Message-ID: <20231229092445.30180-11-petre.rodan@subdimension.ro> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231229092445.30180-1-petre.rodan@subdimension.ro> References: <20231229092445.30180-1-petre.rodan@subdimension.ro> Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add SPI component of the driver. Tested with mprls0015pa0000sa in spi mode on BeagleBone Black on slightly patched 6.7.0-rc6 mainline. Tested with mprls0025pa in i2c mode on BeagleBone Black with togreg branch on git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git (tag: iio-for-6.8a) Tested-by: Andreas Klinger Signed-off-by: Petre Rodan --- v2 -> v3 removed iio.h include line drivers/iio/pressure/Kconfig | 8 ++- drivers/iio/pressure/Makefile | 1 + drivers/iio/pressure/mprls0025pa_spi.c | 89 ++++++++++++++++++++++++++ 3 files changed, 97 insertions(+), 1 deletion(-) create mode 100644 drivers/iio/pressure/mprls0025pa_spi.c -- 2.41.0 diff --git a/drivers/iio/pressure/Kconfig b/drivers/iio/pressure/Kconfig index f03007cfec85..5da7931dc537 100644 --- a/drivers/iio/pressure/Kconfig +++ b/drivers/iio/pressure/Kconfig @@ -181,8 +181,9 @@ config MPL3115 config MPRLS0025PA tristate "Honeywell MPRLS0025PA (MicroPressure sensors series)" - depends on I2C + depends on (I2C || SPI_MASTER) select MPRLS0025PA_I2C if I2C + select MPRLS0025PA_SPI if SPI_MASTER select IIO_BUFFER select IIO_TRIGGERED_BUFFER help @@ -198,6 +199,11 @@ config MPRLS0025PA_I2C depends on MPRLS0025PA depends on I2C +config MPRLS0025PA_SPI + tristate + depends on MPRLS0025PA + depends on SPI_MASTER + config MS5611 tristate "Measurement Specialties MS5611 pressure sensor driver" select IIO_BUFFER diff --git a/drivers/iio/pressure/Makefile b/drivers/iio/pressure/Makefile index 7754135e190c..a93709e35760 100644 --- a/drivers/iio/pressure/Makefile +++ b/drivers/iio/pressure/Makefile @@ -25,6 +25,7 @@ obj-$(CONFIG_MPL115_SPI) += mpl115_spi.o obj-$(CONFIG_MPL3115) += mpl3115.o obj-$(CONFIG_MPRLS0025PA) += mprls0025pa.o obj-$(CONFIG_MPRLS0025PA_I2C) += mprls0025pa_i2c.o +obj-$(CONFIG_MPRLS0025PA_SPI) += mprls0025pa_spi.o obj-$(CONFIG_MS5611) += ms5611_core.o obj-$(CONFIG_MS5611_I2C) += ms5611_i2c.o obj-$(CONFIG_MS5611_SPI) += ms5611_spi.o diff --git a/drivers/iio/pressure/mprls0025pa_spi.c b/drivers/iio/pressure/mprls0025pa_spi.c new file mode 100644 index 000000000000..32f6c2e60380 --- /dev/null +++ b/drivers/iio/pressure/mprls0025pa_spi.c @@ -0,0 +1,89 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * MPRLS0025PA - Honeywell MicroPressure MPR series SPI sensor driver + * + * Copyright (c) 2024 Petre Rodan + * + * Data sheet: + * https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/micropressure-mpr-series/documents/sps-siot-mpr-series-datasheet-32332628-ciid-172626.pdf + */ + +#include +#include +#include +#include + +#include "mprls0025pa.h" + +struct mpr_spi_buf { + u8 tx[MPR_MEASUREMENT_RD_SIZE] __aligned(IIO_DMA_MINALIGN); +}; + +static int mpr_spi_init(struct device *dev) +{ + struct spi_device *spi = to_spi_device(dev); + struct mpr_spi_buf *buf; + + buf = devm_kzalloc(dev, sizeof(*buf), GFP_KERNEL); + if (!buf) + return -ENOMEM; + + spi_set_drvdata(spi, buf); + + return 0; +} + +static int mpr_spi_xfer(struct mpr_data *data, const u8 cmd, const u8 pkt_len) +{ + struct spi_device *spi = to_spi_device(data->dev); + struct mpr_spi_buf *buf = spi_get_drvdata(spi); + struct spi_transfer xfer; + + if (pkt_len > MPR_MEASUREMENT_RD_SIZE) + return -EOVERFLOW; + + buf->tx[0] = cmd; + xfer.tx_buf = buf->tx; + xfer.rx_buf = data->buffer; + xfer.len = pkt_len; + + return spi_sync_transfer(spi, &xfer, 1); +} + +static const struct mpr_ops mpr_spi_ops = { + .init = mpr_spi_init, + .read = mpr_spi_xfer, + .write = mpr_spi_xfer, +}; + +static int mpr_spi_probe(struct spi_device *spi) +{ + return mpr_common_probe(&spi->dev, &mpr_spi_ops, spi->irq); +} + +static const struct of_device_id mpr_spi_match[] = { + { .compatible = "honeywell,mprls0025pa" }, + {} +}; +MODULE_DEVICE_TABLE(of, mpr_spi_match); + +static const struct spi_device_id mpr_spi_id[] = { + { "mprls0025pa" }, + {} +}; +MODULE_DEVICE_TABLE(spi, mpr_spi_id); + +static struct spi_driver mpr_spi_driver = { + .driver = { + .name = "mprls0025pa", + .of_match_table = mpr_spi_match, + }, + .probe = mpr_spi_probe, + .id_table = mpr_spi_id, +}; +module_spi_driver(mpr_spi_driver); + +MODULE_AUTHOR("Petre Rodan "); +MODULE_DESCRIPTION("Honeywell MPR pressure sensor spi driver"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(IIO_HONEYWELL_MPRLS0025PA);