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[109.49.46.234]) by smtp.gmail.com with ESMTPSA id i186sm19352297wmd.19.2019.02.04.09.00.31 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 04 Feb 2019 09:00:31 -0800 (PST) From: Rui Miguel Silva To: Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler , Shawn Guo , Rob Herring , Fabio Estevam Cc: linux-iio@vger.kernel.org, devicetree@vger.kernel.org, Rui Miguel Silva Subject: [PATCH 4/5] iio: gyro: fxas2100x: add spi driver Date: Mon, 4 Feb 2019 17:00:11 +0000 Message-Id: <20190204170012.13617-5-rui.silva@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190204170012.13617-1-rui.silva@linaro.org> References: <20190204170012.13617-1-rui.silva@linaro.org> 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 driver to talk over spi to a fxas2100x gyroscope device and use the core as main controller. Signed-off-by: Rui Miguel Silva --- drivers/iio/gyro/Kconfig | 5 +++ drivers/iio/gyro/Makefile | 1 + drivers/iio/gyro/fxas2100x_spi.c | 70 ++++++++++++++++++++++++++++++++ 3 files changed, 76 insertions(+) create mode 100644 drivers/iio/gyro/fxas2100x_spi.c diff --git a/drivers/iio/gyro/Kconfig b/drivers/iio/gyro/Kconfig index 1f9bfc51febb..4f6d6b393ad8 100644 --- a/drivers/iio/gyro/Kconfig +++ b/drivers/iio/gyro/Kconfig @@ -78,6 +78,7 @@ config FXAS2100X select IIO_BUFFER select IIO_TRIGGERED_BUFFER select FXAS2100X_I2C if (I2C) + select FXAS2100X_SPI if (SPI) depends on (I2C || SPI_MASTER) help Say yes here to build support for NXP FXAS2100X family Tri-axis Gyro @@ -90,6 +91,10 @@ config FXAS2100X_I2C tristate select REGMAP_I2C +config FXAS2100X_SPI + tristate + select REGMAP_SPI + config HID_SENSOR_GYRO_3D depends on HID_SENSOR_HUB select IIO_BUFFER diff --git a/drivers/iio/gyro/Makefile b/drivers/iio/gyro/Makefile index 8b1540ddbbce..29915ba124b0 100644 --- a/drivers/iio/gyro/Makefile +++ b/drivers/iio/gyro/Makefile @@ -14,6 +14,7 @@ obj-$(CONFIG_BMG160_I2C) += bmg160_i2c.o obj-$(CONFIG_BMG160_SPI) += bmg160_spi.o obj-$(CONFIG_FXAS2100X) += fxas2100x_core.o obj-$(CONFIG_FXAS2100X_I2C) += fxas2100x_i2c.o +obj-$(CONFIG_FXAS2100X_SPI) += fxas2100x_spi.o obj-$(CONFIG_HID_SENSOR_GYRO_3D) += hid-sensor-gyro-3d.o diff --git a/drivers/iio/gyro/fxas2100x_spi.c b/drivers/iio/gyro/fxas2100x_spi.c new file mode 100644 index 000000000000..10f856ba6f47 --- /dev/null +++ b/drivers/iio/gyro/fxas2100x_spi.c @@ -0,0 +1,70 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for NXP FXAS2100x Gyroscope - SPI + * + * Copyright (C) 2018 Linaro Ltd. + * + */ + +#include +#include +#include +#include + +#include "fxas2100x.h" + +static const struct regmap_config fxas2100x_regmap_spi_conf = { + .reg_bits = 8, + .val_bits = 8, + .max_register = FXAS2100X_REG_CTRL3, +}; + +static int fxas2100x_spi_probe(struct spi_device *spi) +{ + const struct spi_device_id *id = spi_get_device_id(spi); + struct regmap *regmap; + + regmap = devm_regmap_init_spi(spi, &fxas2100x_regmap_spi_conf); + if (IS_ERR(regmap)) { + dev_err(&spi->dev, "Failed to register spi regmap: %ld\n", + PTR_ERR(regmap)); + return PTR_ERR(regmap); + } + + return fxas2100x_core_probe(&spi->dev, regmap, spi->irq, id->name); +} + +static int fxas2100x_spi_remove(struct spi_device *spi) +{ + fxas2100x_core_remove(&spi->dev); + + return 0; +} + +static const struct spi_device_id fxas2100x_spi_id[] = { + { "fxas2100x", 0 }, + { } +}; +MODULE_DEVICE_TABLE(spi, fxas2100x_spi_id); + +static const struct of_device_id fxas2100x_spi_of_match[] = { + { .compatible = "nxp,fxas2100x", }, + { }, +}; +MODULE_DEVICE_TABLE(of, fxas2100x_spi_of_match); + +static struct spi_driver fxas2100x_spi_driver = { + .driver = { + .name = "fxas2100x_spi", + .pm = &fxas2100x_pm_ops, + .of_match_table = of_match_ptr(fxas2100x_spi_of_match), + }, + .probe = fxas2100x_spi_probe, + .remove = fxas2100x_spi_remove, + .id_table = fxas2100x_spi_id, +}; +module_spi_driver(fxas2100x_spi_driver); + +MODULE_AUTHOR("Rui Miguel Silva "); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("FXAS2100X SPI Gyro driver");