[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / comedi / drivers / adl_pci7230.c

/*
    comedi/drivers/adl_pci7230.c

    Hardware comedi driver fot PCI7230 Adlink card
    Copyright (C) 2010 David Fernandez <dfcastelao@gmail.com>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/
/*
Driver: adl_pci7230
Description: Driver for the Adlink PCI-7230 32 ch. isolated digital io board
Devices: [ADLink] PCI-7230 (adl_pci7230)
Author: David Fernandez <dfcastelao@gmail.com>
Status: experimental
Updated: Mon, 14 Apr 2008 15:08:14 +0100

Configuration Options:
  [0] - PCI bus of device (optional)
  [1] - PCI slot of device (optional)
  If bus/slot is not specified, the first supported
  PCI device found will be used.
*/

#include "../comedidev.h"
#include <linux/kernel.h>
#include "comedi_pci.h"

#define PCI7230_DI      0x00
#define PCI7230_DO	    0x00

#define PCI_DEVICE_ID_PCI7230 0x7230

static DEFINE_PCI_DEVICE_TABLE(adl_pci7230_pci_table) = {
	{
		PCI_VENDOR_ID_ADLINK,
		PCI_DEVICE_ID_PCI7230,
		PCI_ANY_ID,
		PCI_ANY_ID,
		0,
		0,
		0
	},
	{0}
};

MODULE_DEVICE_TABLE(pci, adl_pci7230_pci_table);

struct adl_pci7230_private {
	int data;
	struct pci_dev *pci_dev;
};

#define devpriv ((struct adl_pci7230_private *)dev->private)

static int adl_pci7230_attach(struct comedi_device *dev,
	struct comedi_devconfig *it);
static int adl_pci7230_detach(struct comedi_device *dev);
static struct comedi_driver driver_adl_pci7230 = {
	.driver_name = "adl_pci7230",
	.module = THIS_MODULE,
	.attach = adl_pci7230_attach,
	.detach = adl_pci7230_detach,
};

/* Digital IO */

static int adl_pci7230_di_insn_bits(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn *insn,
	unsigned int *data);

static int adl_pci7230_do_insn_bits(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn *insn,
	unsigned int *data);

static int adl_pci7230_attach(struct comedi_device *dev,
	struct comedi_devconfig *it)
{
	struct pci_dev *pcidev = NULL;
	struct comedi_subdevice *s;
	int bus, slot;

	printk(KERN_INFO "comedi%d: adl_pci7230\n", dev->minor);

	dev->board_name = "pci7230";
	bus = it->options[0];
	slot = it->options[1];

	if (alloc_private(dev, sizeof(struct adl_pci7230_private)) < 0)
		return -ENOMEM;

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

	for_each_pci_dev(pcidev) {
		if (pcidev->vendor == PCI_VENDOR_ID_ADLINK &&
			pcidev->device == PCI_DEVICE_ID_PCI7230) {
			if (bus || slot) {
				/* requested particular bus/slot */
				if (pcidev->bus->number != bus ||
					PCI_SLOT(pcidev->devfn) != slot) {
					continue;
				}
			}
			devpriv->pci_dev = pcidev;
			break;
		}
	}
	if (pcidev == NULL) {
		printk(KERN_ERR "comedi%d: no supported board found! (req. bus/slot : %d/%d)\n",
			dev->minor, bus, slot);
		return -EIO;
	}
	if (comedi_pci_enable(pcidev, "adl_pci7230") < 0) {
		printk(KERN_ERR "comedi%d: Failed to enable PCI device and request regions\n",
			dev->minor);
		return -EIO;
	}
	dev->iobase = pci_resource_start(pcidev, 2);
	printk(KERN_DEBUG "comedi: base addr %4lx\n", dev->iobase);

	s = dev->subdevices + 0;
	/* Isolated do */
	s->type = COMEDI_SUBD_DO;
	s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_COMMON;
	s->n_chan = 16;
	s->maxdata = 1;
	s->range_table = &range_digital;
	s->insn_bits = adl_pci7230_do_insn_bits;

	s = dev->subdevices + 1;
	/* Isolated di */
	s->type = COMEDI_SUBD_DI;
	s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_COMMON;
	s->n_chan = 16;
	s->maxdata = 1;
	s->range_table = &range_digital;
	s->insn_bits = adl_pci7230_di_insn_bits;

	printk(KERN_DEBUG "comedi: attached\n");

	return 1;
}

static int adl_pci7230_detach(struct comedi_device *dev)
{
	printk(KERN_DEBUG "comedi%d: pci7230: remove\n", dev->minor);

	if (devpriv && devpriv->pci_dev) {
		if (dev->iobase)
			comedi_pci_disable(devpriv->pci_dev);
		pci_dev_put(devpriv->pci_dev);
	}

	return 0;
}

static int adl_pci7230_do_insn_bits(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]);

		outl((s->state  << 16) & 0xffffffff, dev->iobase + PCI7230_DO);
	}

	return 2;
}

static int adl_pci7230_di_insn_bits(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn *insn,
	unsigned int *data)
{
	if (insn->n != 2)
		return -EINVAL;

	data[1] = inl(dev->iobase + PCI7230_DI) & 0xffffffff;

	return 2;
}

static int __devinit driver_adl_pci7230_pci_probe(struct pci_dev *dev,
						  const struct pci_device_id
						  *ent)
{
	return comedi_pci_auto_config(dev, driver_adl_pci7230.driver_name);
}

static void __devexit driver_adl_pci7230_pci_remove(struct pci_dev *dev)
{
	comedi_pci_auto_unconfig(dev);
}

static struct pci_driver driver_adl_pci7230_pci_driver = {
	.id_table = adl_pci7230_pci_table,
	.probe = &driver_adl_pci7230_pci_probe,
	.remove = __devexit_p(&driver_adl_pci7230_pci_remove)
};

static int __init driver_adl_pci7230_init_module(void)
{
	int retval;

	retval = comedi_driver_register(&driver_adl_pci7230);
	if (retval < 0)
		return retval;

	driver_adl_pci7230_pci_driver.name =
	    (char *)driver_adl_pci7230.driver_name;
	return pci_register_driver(&driver_adl_pci7230_pci_driver);
}

static void __exit driver_adl_pci7230_cleanup_module(void)
{
	pci_unregister_driver(&driver_adl_pci7230_pci_driver);
	comedi_driver_unregister(&driver_adl_pci7230);
}

module_init(driver_adl_pci7230_init_module);
module_exit(driver_adl_pci7230_cleanup_module);

MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
c76a326f DF	1	/*
	2	comedi/drivers/adl_pci7230.c
	3
	4	Hardware comedi driver fot PCI7230 Adlink card
	5	Copyright (C) 2010 David Fernandez <dfcastelao@gmail.com>
	6
	7	This program is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 2 of the License, or
	10	(at your option) any later version.
	11
	12	This program is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with this program; if not, write to the Free Software
	19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	20
	21	*/
	22	/*
	23	Driver: adl_pci7230
	24	Description: Driver for the Adlink PCI-7230 32 ch. isolated digital io board
	25	Devices: [ADLink] PCI-7230 (adl_pci7230)
	26	Author: David Fernandez <dfcastelao@gmail.com>
	27	Status: experimental
	28	Updated: Mon, 14 Apr 2008 15:08:14 +0100
	29
	30	Configuration Options:
	31	[0] - PCI bus of device (optional)
	32	[1] - PCI slot of device (optional)
	33	If bus/slot is not specified, the first supported
	34	PCI device found will be used.
	35	*/
	36
	37	#include "../comedidev.h"
	38	#include <linux/kernel.h>
	39	#include "comedi_pci.h"
	40
	41	#define PCI7230_DI 0x00
	42	#define PCI7230_DO 0x00
	43
	44	#define PCI_DEVICE_ID_PCI7230 0x7230
	45
	46	static DEFINE_PCI_DEVICE_TABLE(adl_pci7230_pci_table) = {
	47	{
	48	PCI_VENDOR_ID_ADLINK,
	49	PCI_DEVICE_ID_PCI7230,
	50	PCI_ANY_ID,
	51	PCI_ANY_ID,
	52	0,
	53	0,
	54	0
	55	},
	56	{0}
	57	};
	58
	59	MODULE_DEVICE_TABLE(pci, adl_pci7230_pci_table);
	60
	61	struct adl_pci7230_private {
	62	int data;
	63	struct pci_dev *pci_dev;
	64	};
65
66	#define devpriv ((struct adl_pci7230_private *)dev->private)
67
68	static int adl_pci7230_attach(struct comedi_device *dev,
69	struct comedi_devconfig *it);
70	static int adl_pci7230_detach(struct comedi_device *dev);
71	static struct comedi_driver driver_adl_pci7230 = {
72	.driver_name = "adl_pci7230",
73	.module = THIS_MODULE,
74	.attach = adl_pci7230_attach,
75	.detach = adl_pci7230_detach,
76	};
77
78	/* Digital IO */
79
80	static int adl_pci7230_di_insn_bits(struct comedi_device *dev,
81	struct comedi_subdevice *s,
82	struct comedi_insn *insn,
83	unsigned int *data);
84
85	static int adl_pci7230_do_insn_bits(struct comedi_device *dev,
86	struct comedi_subdevice *s,
87	struct comedi_insn *insn,
88	unsigned int *data);
89
90	static int adl_pci7230_attach(struct comedi_device *dev,
91	struct comedi_devconfig *it)
92	{
20fb2280	93	struct pci_dev *pcidev = NULL;
c76a326f DF	94	struct comedi_subdevice *s;
	95	int bus, slot;
	96
	97	printk(KERN_INFO "comedi%d: adl_pci7230\n", dev->minor);
	98
	99	dev->board_name = "pci7230";
	100	bus = it->options[0];
	101	slot = it->options[1];
	102
	103	if (alloc_private(dev, sizeof(struct adl_pci7230_private)) < 0)
	104	return -ENOMEM;
	105
	106	if (alloc_subdevices(dev, 2) < 0)
	107	return -ENOMEM;
	108
20fb2280	109	for_each_pci_dev(pcidev) {
c76a326f DF	110	if (pcidev->vendor == PCI_VENDOR_ID_ADLINK &&
	111	pcidev->device == PCI_DEVICE_ID_PCI7230) {
	112	if (bus \|\| slot) {
	113	/* requested particular bus/slot */
	114	if (pcidev->bus->number != bus \|\|
	115	PCI_SLOT(pcidev->devfn) != slot) {
	116	continue;
	117	}
	118	}
	119	devpriv->pci_dev = pcidev;
	120	break;
	121	}
	122	}
	123	if (pcidev == NULL) {
	124	printk(KERN_ERR "comedi%d: no supported board found! (req. bus/slot : %d/%d)\n",
	125	dev->minor, bus, slot);
	126	return -EIO;
	127	}
	128	if (comedi_pci_enable(pcidev, "adl_pci7230") < 0) {
	129	printk(KERN_ERR "comedi%d: Failed to enable PCI device and request regions\n",
	130	dev->minor);
	131	return -EIO;
	132	}
	133	dev->iobase = pci_resource_start(pcidev, 2);
	134	printk(KERN_DEBUG "comedi: base addr %4lx\n", dev->iobase);
	135
	136	s = dev->subdevices + 0;
	137	/* Isolated do */
	138	s->type = COMEDI_SUBD_DO;
	139	s->subdev_flags = SDF_WRITABLE \| SDF_GROUND \| SDF_COMMON;
	140	s->n_chan = 16;
	141	s->maxdata = 1;
	142	s->range_table = &range_digital;
	143	s->insn_bits = adl_pci7230_do_insn_bits;
	144
	145	s = dev->subdevices + 1;
	146	/* Isolated di */
	147	s->type = COMEDI_SUBD_DI;
	148	s->subdev_flags = SDF_READABLE \| SDF_GROUND \| SDF_COMMON;
	149	s->n_chan = 16;
	150	s->maxdata = 1;
	151	s->range_table = &range_digital;
	152	s->insn_bits = adl_pci7230_di_insn_bits;
	153
	154	printk(KERN_DEBUG "comedi: attached\n");
	155
	156	return 1;
	157	}
	158
	159	static int adl_pci7230_detach(struct comedi_device *dev)
	160	{
	161	printk(KERN_DEBUG "comedi%d: pci7230: remove\n", dev->minor);
	162
	163	if (devpriv && devpriv->pci_dev) {
	164	if (dev->iobase)
	165	comedi_pci_disable(devpriv->pci_dev);
	166	pci_dev_put(devpriv->pci_dev);
	167	}
	168
	169	return 0;
	170	}
	171
	172	static int adl_pci7230_do_insn_bits(struct comedi_device *dev,
	173	struct comedi_subdevice *s,
174	struct comedi_insn *insn,
175	unsigned int *data)
176	{
177	if (insn->n != 2)
178	return -EINVAL;
179
180	if (data[0]) {
181	s->state &= ~data[0];
182	s->state \|= (data[0] & data[1]);
183
184	outl((s->state << 16) & 0xffffffff, dev->iobase + PCI7230_DO);
185	}
186
187	return 2;
188	}
189
190	static int adl_pci7230_di_insn_bits(struct comedi_device *dev,
191	struct comedi_subdevice *s,
192	struct comedi_insn *insn,
193	unsigned int *data)
194	{
195	if (insn->n != 2)
196	return -EINVAL;
197
198	data[1] = inl(dev->iobase + PCI7230_DI) & 0xffffffff;
199
200	return 2;
201	}
202
727b286b AT	203	static int __devinit driver_adl_pci7230_pci_probe(struct pci_dev *dev,
	204	const struct pci_device_id
	205	*ent)
	206	{
	207	return comedi_pci_auto_config(dev, driver_adl_pci7230.driver_name);
	208	}
	209
	210	static void __devexit driver_adl_pci7230_pci_remove(struct pci_dev *dev)
	211	{
	212	comedi_pci_auto_unconfig(dev);
	213	}
	214
	215	static struct pci_driver driver_adl_pci7230_pci_driver = {
	216	.id_table = adl_pci7230_pci_table,
	217	.probe = &driver_adl_pci7230_pci_probe,
	218	.remove = __devexit_p(&driver_adl_pci7230_pci_remove)
	219	};
	220
	221	static int __init driver_adl_pci7230_init_module(void)
	222	{
	223	int retval;
	224
	225	retval = comedi_driver_register(&driver_adl_pci7230);
	226	if (retval < 0)
	227	return retval;
	228
	229	driver_adl_pci7230_pci_driver.name =
	230	(char *)driver_adl_pci7230.driver_name;
	231	return pci_register_driver(&driver_adl_pci7230_pci_driver);
	232	}
	233
	234	static void __exit driver_adl_pci7230_cleanup_module(void)
	235	{
	236	pci_unregister_driver(&driver_adl_pci7230_pci_driver);
	237	comedi_driver_unregister(&driver_adl_pci7230);
	238	}
	239
	240	module_init(driver_adl_pci7230_init_module);
	241	module_exit(driver_adl_pci7230_cleanup_module);
90f703d3 AT	242
	243	MODULE_AUTHOR("Comedi http://www.comedi.org");
	244	MODULE_DESCRIPTION("Comedi low-level driver");
	245	MODULE_LICENSE("GPL");