// SPDX-License-Identifier: GPL-2.0-only /* * ADXRS450/ADXRS453 Digital Output Gyroscope Driver * * Copyright 2011 Analog Devices Inc. */ #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/delay.h> #include <linux/mutex.h> #include <linux/device.h> #include <linux/kernel.h> #include <linux/spi/spi.h> #include <linux/slab.h> #include <linux/sysfs.h> #include <linux/list.h> #include <linux/module.h> #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> #define ADXRS450_STARTUP_DELAY … /* The MSB for the spi commands */ #define ADXRS450_SENSOR_DATA … #define ADXRS450_WRITE_DATA … #define ADXRS450_READ_DATA … #define ADXRS450_RATE1 … #define ADXRS450_TEMP1 … #define ADXRS450_LOCST1 … #define ADXRS450_HICST1 … #define ADXRS450_QUAD1 … #define ADXRS450_FAULT1 … #define ADXRS450_PID1 … #define ADXRS450_SNH … #define ADXRS450_SNL … #define ADXRS450_DNC1 … /* Check bits */ #define ADXRS450_P … #define ADXRS450_CHK … #define ADXRS450_CST … #define ADXRS450_PWR … #define ADXRS450_POR … #define ADXRS450_NVM … #define ADXRS450_Q … #define ADXRS450_PLL … #define ADXRS450_UV … #define ADXRS450_OV … #define ADXRS450_AMP … #define ADXRS450_FAIL … #define ADXRS450_WRERR_MASK … #define ADXRS450_MAX_RX … #define ADXRS450_MAX_TX … #define ADXRS450_GET_ST(a) … enum { … }; /** * struct adxrs450_state - device instance specific data * @us: actual spi_device * @buf_lock: mutex to protect tx and rx * @tx: transmit buffer * @rx: receive buffer **/ struct adxrs450_state { … }; /** * adxrs450_spi_read_reg_16() - read 2 bytes from a register pair * @indio_dev: device associated with child of actual iio_dev * @reg_address: the address of the lower of the two registers, which should be * an even address, the second register's address is reg_address + 1. * @val: somewhere to pass back the value read **/ static int adxrs450_spi_read_reg_16(struct iio_dev *indio_dev, u8 reg_address, u16 *val) { … } /** * adxrs450_spi_write_reg_16() - write 2 bytes data to a register pair * @indio_dev: device associated with child of actual actual iio_dev * @reg_address: the address of the lower of the two registers,which should be * an even address, the second register's address is reg_address + 1. * @val: value to be written. **/ static int adxrs450_spi_write_reg_16(struct iio_dev *indio_dev, u8 reg_address, u16 val) { … } /** * adxrs450_spi_sensor_data() - read 2 bytes sensor data * @indio_dev: device associated with child of actual iio_dev * @val: somewhere to pass back the value read **/ static int adxrs450_spi_sensor_data(struct iio_dev *indio_dev, s16 *val) { … } /** * adxrs450_spi_initial() - use for initializing procedure. * @st: device instance specific data * @val: somewhere to pass back the value read * @chk: Whether to perform fault check **/ static int adxrs450_spi_initial(struct adxrs450_state *st, u32 *val, char chk) { … } /* Recommended Startup Sequence by spec */ static int adxrs450_initial_setup(struct iio_dev *indio_dev) { … } static int adxrs450_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { … } static int adxrs450_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { … } static const struct iio_chan_spec adxrs450_channels[2][2] = …; static const struct iio_info adxrs450_info = …; static int adxrs450_probe(struct spi_device *spi) { … } static const struct spi_device_id adxrs450_id[] = …; MODULE_DEVICE_TABLE(spi, adxrs450_id); static struct spi_driver adxrs450_driver = …; module_spi_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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