// SPDX-License-Identifier: GPL-2.0 /* TI ADS124S0X chip family driver * Copyright (C) 2018 Texas Instruments Incorporated - https://www.ti.com/ */ #include <linux/err.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/mod_devicetable.h> #include <linux/slab.h> #include <linux/sysfs.h> #include <linux/gpio/consumer.h> #include <linux/spi/spi.h> #include <linux/iio/iio.h> #include <linux/iio/buffer.h> #include <linux/iio/trigger_consumer.h> #include <linux/iio/triggered_buffer.h> #include <linux/iio/sysfs.h> #include <asm/unaligned.h> /* Commands */ #define ADS124S08_CMD_NOP … #define ADS124S08_CMD_WAKEUP … #define ADS124S08_CMD_PWRDWN … #define ADS124S08_CMD_RESET … #define ADS124S08_CMD_START … #define ADS124S08_CMD_STOP … #define ADS124S08_CMD_SYOCAL … #define ADS124S08_CMD_SYGCAL … #define ADS124S08_CMD_SFOCAL … #define ADS124S08_CMD_RDATA … #define ADS124S08_CMD_RREG … #define ADS124S08_CMD_WREG … /* Registers */ #define ADS124S08_ID_REG … #define ADS124S08_STATUS … #define ADS124S08_INPUT_MUX … #define ADS124S08_PGA … #define ADS124S08_DATA_RATE … #define ADS124S08_REF … #define ADS124S08_IDACMAG … #define ADS124S08_IDACMUX … #define ADS124S08_VBIAS … #define ADS124S08_SYS … #define ADS124S08_OFCAL0 … #define ADS124S08_OFCAL1 … #define ADS124S08_OFCAL2 … #define ADS124S08_FSCAL0 … #define ADS124S08_FSCAL1 … #define ADS124S08_FSCAL2 … #define ADS124S08_GPIODAT … #define ADS124S08_GPIOCON … /* ADS124S0x common channels */ #define ADS124S08_AIN0 … #define ADS124S08_AIN1 … #define ADS124S08_AIN2 … #define ADS124S08_AIN3 … #define ADS124S08_AIN4 … #define ADS124S08_AIN5 … #define ADS124S08_AINCOM … /* ADS124S08 only channels */ #define ADS124S08_AIN6 … #define ADS124S08_AIN7 … #define ADS124S08_AIN8 … #define ADS124S08_AIN9 … #define ADS124S08_AIN10 … #define ADS124S08_AIN11 … #define ADS124S08_MAX_CHANNELS … #define ADS124S08_POS_MUX_SHIFT … #define ADS124S08_INT_REF … #define ADS124S08_START_REG_MASK … #define ADS124S08_NUM_BYTES_MASK … #define ADS124S08_START_CONV … #define ADS124S08_STOP_CONV … enum ads124s_id { … }; struct ads124s_chip_info { … }; struct ads124s_private { … }; #define ADS124S08_CHAN(index) … static const struct iio_chan_spec ads124s06_channels[] = …; static const struct iio_chan_spec ads124s08_channels[] = …; static const struct ads124s_chip_info ads124s_chip_info_tbl[] = …; static int ads124s_write_cmd(struct iio_dev *indio_dev, u8 command) { … } static int ads124s_write_reg(struct iio_dev *indio_dev, u8 reg, u8 data) { … } static int ads124s_reset(struct iio_dev *indio_dev) { struct ads124s_private *priv = iio_priv(indio_dev); if (priv->reset_gpio) { gpiod_set_value(priv->reset_gpio, 0); udelay(200); gpiod_set_value(priv->reset_gpio, 1); } else { return ads124s_write_cmd(indio_dev, ADS124S08_CMD_RESET); } return 0; }; static int ads124s_read(struct iio_dev *indio_dev) { … } static int ads124s_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long m) { … } static const struct iio_info ads124s_info = …; static irqreturn_t ads124s_trigger_handler(int irq, void *p) { … } static int ads124s_probe(struct spi_device *spi) { … } static const struct spi_device_id ads124s_id[] = …; MODULE_DEVICE_TABLE(spi, ads124s_id); static const struct of_device_id ads124s_of_table[] = …; MODULE_DEVICE_TABLE(of, ads124s_of_table); static struct spi_driver ads124s_driver = …; module_spi_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
Codebase Browser
linux