[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / comedi / drivers / pcl725.c

/*
 * comedi/drivers/pcl725.c
 * Driver for PCL725 and clones
 * David A. Schleef
 */
/*
Driver: pcl725
Description: Advantech PCL-725 (& compatibles)
Author: ds
Status: unknown
Devices: [Advantech] PCL-725 (pcl725)
*/

#include "../comedidev.h"

#include <linux/ioport.h>

#define PCL725_SIZE 2

#define PCL725_DO 0
#define PCL725_DI 1

static int pcl725_attach(struct comedi_device *dev,
			 struct comedi_devconfig *it);
static int pcl725_detach(struct comedi_device *dev);
static struct comedi_driver driver_pcl725 = {
	.driver_name = "pcl725",
	.module = THIS_MODULE,
	.attach = pcl725_attach,
	.detach = pcl725_detach,
};

static int __init driver_pcl725_init_module(void)
{
	return comedi_driver_register(&driver_pcl725);
}

static void __exit driver_pcl725_cleanup_module(void)
{
	comedi_driver_unregister(&driver_pcl725);
}

module_init(driver_pcl725_init_module);
module_exit(driver_pcl725_cleanup_module);

static int pcl725_do_insn(struct comedi_device *dev, struct comedi_subdevice *s,
			  struct comedi_insn *insn, unsigned int *data)
{
	if (insn->n != 2)
		return -EINVAL;

	if (data[0]) {
		s->state &= ~data[0];
		s->state |= (data[0] & data[1]);
		outb(s->state, dev->iobase + PCL725_DO);
	}

	data[1] = s->state;

	return 2;
}

static int pcl725_di_insn(struct comedi_device *dev, struct comedi_subdevice *s,
			  struct comedi_insn *insn, unsigned int *data)
{
	if (insn->n != 2)
		return -EINVAL;

	data[1] = inb(dev->iobase + PCL725_DI);

	return 2;
}

static int pcl725_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
	struct comedi_subdevice *s;
	unsigned long iobase;

	iobase = it->options[0];
	printk(KERN_INFO "comedi%d: pcl725: 0x%04lx ", dev->minor, iobase);
	if (!request_region(iobase, PCL725_SIZE, "pcl725")) {
		printk("I/O port conflict\n");
		return -EIO;
	}
	dev->board_name = "pcl725";
	dev->iobase = iobase;
	dev->irq = 0;

	if (alloc_subdevices(dev, 2) < 0)
		return -ENOMEM;

	s = dev->subdevices + 0;
	/* do */
	s->type = COMEDI_SUBD_DO;
	s->subdev_flags = SDF_WRITABLE;
	s->maxdata = 1;
	s->n_chan = 8;
	s->insn_bits = pcl725_do_insn;
	s->range_table = &range_digital;

	s = dev->subdevices + 1;
	/* di */
	s->type = COMEDI_SUBD_DI;
	s->subdev_flags = SDF_READABLE;
	s->maxdata = 1;
	s->n_chan = 8;
	s->insn_bits = pcl725_di_insn;
	s->range_table = &range_digital;

	printk(KERN_INFO "\n");

	return 0;
}

static int pcl725_detach(struct comedi_device *dev)
{
	printk(KERN_INFO "comedi%d: pcl725: remove\n", dev->minor);

	if (dev->iobase)
		release_region(dev->iobase, PCL725_SIZE);

	return 0;
}

MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
501d675d DS	1	/*
	2	* comedi/drivers/pcl725.c
	3	* Driver for PCL725 and clones
	4	* David A. Schleef
	5	*/
	6	/*
	7	Driver: pcl725
	8	Description: Advantech PCL-725 (& compatibles)
	9	Author: ds
	10	Status: unknown
	11	Devices: [Advantech] PCL-725 (pcl725)
	12	*/
	13
	14	#include "../comedidev.h"
	15
	16	#include <linux/ioport.h>
	17
	18	#define PCL725_SIZE 2
	19
	20	#define PCL725_DO 0
	21	#define PCL725_DI 1
	22
0a85b6f0 MT	23	static int pcl725_attach(struct comedi_device *dev,
0a85b6f0 MT	24	struct comedi_devconfig *it);
da91b269	25	static int pcl725_detach(struct comedi_device *dev);
139dfbdf	26	static struct comedi_driver driver_pcl725 = {
68c3dbff BP	27	.driver_name = "pcl725",
	28	.module = THIS_MODULE,
	29	.attach = pcl725_attach,
	30	.detach = pcl725_detach,
501d675d DS	31	};
501d675d DS	32
7114a280 AT	33	static int __init driver_pcl725_init_module(void)
	34	{
	35	return comedi_driver_register(&driver_pcl725);
	36	}
	37
	38	static void __exit driver_pcl725_cleanup_module(void)
	39	{
	40	comedi_driver_unregister(&driver_pcl725);
	41	}
	42
	43	module_init(driver_pcl725_init_module);
	44	module_exit(driver_pcl725_cleanup_module);
501d675d	45
da91b269	46	static int pcl725_do_insn(struct comedi_device dev, struct comedi_subdevice s,
0a85b6f0	47	struct comedi_insn insn, unsigned int data)
501d675d DS	48	{
	49	if (insn->n != 2)
	50	return -EINVAL;
	51
	52	if (data[0]) {
	53	s->state &= ~data[0];
	54	s->state \|= (data[0] & data[1]);
	55	outb(s->state, dev->iobase + PCL725_DO);
	56	}
	57
	58	data[1] = s->state;
	59
	60	return 2;
	61	}
	62
da91b269	63	static int pcl725_di_insn(struct comedi_device dev, struct comedi_subdevice s,
0a85b6f0	64	struct comedi_insn insn, unsigned int data)
501d675d DS	65	{
	66	if (insn->n != 2)
	67	return -EINVAL;
	68
	69	data[1] = inb(dev->iobase + PCL725_DI);
	70
	71	return 2;
	72	}
	73
da91b269	74	static int pcl725_attach(struct comedi_device dev, struct comedi_devconfig it)
501d675d	75	{
34c43922	76	struct comedi_subdevice *s;
501d675d DS	77	unsigned long iobase;
	78
	79	iobase = it->options[0];
acb60e91	80	printk(KERN_INFO "comedi%d: pcl725: 0x%04lx ", dev->minor, iobase);
501d675d DS	81	if (!request_region(iobase, PCL725_SIZE, "pcl725")) {
	82	printk("I/O port conflict\n");
	83	return -EIO;
	84	}
	85	dev->board_name = "pcl725";
	86	dev->iobase = iobase;
	87	dev->irq = 0;
	88
	89	if (alloc_subdevices(dev, 2) < 0)
	90	return -ENOMEM;
	91
	92	s = dev->subdevices + 0;
	93	/* do */
	94	s->type = COMEDI_SUBD_DO;
	95	s->subdev_flags = SDF_WRITABLE;
	96	s->maxdata = 1;
	97	s->n_chan = 8;
	98	s->insn_bits = pcl725_do_insn;
	99	s->range_table = &range_digital;
	100
	101	s = dev->subdevices + 1;
	102	/* di */
	103	s->type = COMEDI_SUBD_DI;
	104	s->subdev_flags = SDF_READABLE;
	105	s->maxdata = 1;
	106	s->n_chan = 8;
	107	s->insn_bits = pcl725_di_insn;
	108	s->range_table = &range_digital;
	109
acb60e91	110	printk(KERN_INFO "\n");
501d675d DS	111
	112	return 0;
	113	}
	114
da91b269	115	static int pcl725_detach(struct comedi_device *dev)
501d675d	116	{
acb60e91	117	printk(KERN_INFO "comedi%d: pcl725: remove\n", dev->minor);
501d675d DS	118
	119	if (dev->iobase)
	120	release_region(dev->iobase, PCL725_SIZE);
	121
	122	return 0;
	123	}
90f703d3 AT	124
	125	MODULE_AUTHOR("Comedi http://www.comedi.org");
	126	MODULE_DESCRIPTION("Comedi low-level driver");
	127	MODULE_LICENSE("GPL");