linux/drivers/comedi/drivers/aio_iiro_16.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * aio_iiro_16.c
 * Comedi driver for Access I/O Products 104-IIRO-16 board
 * Copyright (C) 2006 C&C Technologies, Inc.
 */

/*
 * Driver: aio_iiro_16
 * Description: Access I/O Products PC/104 Isolated Input/Relay Output Board
 * Author: Zachary Ware <[email protected]>
 * Devices: [Access I/O] 104-IIRO-16 (aio_iiro_16)
 * Status: experimental
 *
 * Configuration Options:
 *   [0] - I/O port base address
 *   [1] - IRQ (optional)
 *
 * The board supports interrupts on change of state of the digital inputs.
 * The sample data returned by the async command indicates which inputs
 * changed state and the current state of the inputs:
 *
 *	Bit 23 - IRQ Enable (1) / Disable (0)
 *	Bit 17 - Input 8-15 Changed State (1 = Changed, 0 = No Change)
 *	Bit 16 - Input 0-7 Changed State (1 = Changed, 0 = No Change)
 *	Bit 15 - Digital input 15
 *	...
 *	Bit 0  - Digital input 0
 */

#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/comedi/comedidev.h>

#define AIO_IIRO_16_RELAY_0_7 …
#define AIO_IIRO_16_INPUT_0_7 …
#define AIO_IIRO_16_IRQ …
#define AIO_IIRO_16_RELAY_8_15 …
#define AIO_IIRO_16_INPUT_8_15 …
#define AIO_IIRO_16_STATUS …
#define AIO_IIRO_16_STATUS_IRQE …
#define AIO_IIRO_16_STATUS_INPUT_8_15 …
#define AIO_IIRO_16_STATUS_INPUT_0_7 …

static unsigned int aio_iiro_16_read_inputs(struct comedi_device *dev)
{ … }

static irqreturn_t aio_iiro_16_cos(int irq, void *d)
{ … }

static void aio_iiro_enable_irq(struct comedi_device *dev, bool enable)
{ … }

static int aio_iiro_16_cos_cancel(struct comedi_device *dev,
				  struct comedi_subdevice *s)
{ … }

static int aio_iiro_16_cos_cmd(struct comedi_device *dev,
			       struct comedi_subdevice *s)
{ … }

static int aio_iiro_16_cos_cmdtest(struct comedi_device *dev,
				   struct comedi_subdevice *s,
				   struct comedi_cmd *cmd)
{ … }

static int aio_iiro_16_do_insn_bits(struct comedi_device *dev,
				    struct comedi_subdevice *s,
				    struct comedi_insn *insn,
				    unsigned int *data)
{ … }

static int aio_iiro_16_di_insn_bits(struct comedi_device *dev,
				    struct comedi_subdevice *s,
				    struct comedi_insn *insn,
				    unsigned int *data)
{ … }

static int aio_iiro_16_attach(struct comedi_device *dev,
			      struct comedi_devconfig *it)
{ … }

static struct comedi_driver aio_iiro_16_driver = …;
module_comedi_driver(…);

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;