| /* |
| * comedi/drivers/acl7225b.c |
| * Driver for Adlink NuDAQ ACL-7225b and clones |
| * José Luis Sánchez |
| */ |
| /* |
| Driver: acl7225b |
| Description: Adlink NuDAQ ACL-7225b & compatibles |
| Author: José Luis Sánchez (jsanchezv@teleline.es) |
| Status: testing |
| Devices: [Adlink] ACL-7225b (acl7225b), [ICP] P16R16DIO (p16r16dio) |
| */ |
| |
| #include "../comedidev.h" |
| |
| #include <linux/ioport.h> |
| |
| #define ACL7225_SIZE 8 /* Requires 8 ioports, but only 4 are used */ |
| #define P16R16DIO_SIZE 4 |
| #define ACL7225_RIO_LO 0 /* Relays input/output low byte (R0-R7) */ |
| #define ACL7225_RIO_HI 1 /* Relays input/output high byte (R8-R15) */ |
| #define ACL7225_DI_LO 2 /* Digital input low byte (DI0-DI7) */ |
| #define ACL7225_DI_HI 3 /* Digital input high byte (DI8-DI15) */ |
| |
| struct boardtype { |
| const char *name; /* driver name */ |
| int io_range; /* len of I/O space */ |
| }; |
| |
| static int acl7225b_do_insn(struct comedi_device *dev, |
| struct comedi_subdevice *s, |
| struct comedi_insn *insn, unsigned int *data) |
| { |
| if (data[0]) { |
| s->state &= ~data[0]; |
| s->state |= (data[0] & data[1]); |
| } |
| if (data[0] & 0x00ff) |
| outb(s->state & 0xff, dev->iobase + (unsigned long)s->private); |
| if (data[0] & 0xff00) |
| outb((s->state >> 8), |
| dev->iobase + (unsigned long)s->private + 1); |
| |
| data[1] = s->state; |
| |
| return insn->n; |
| } |
| |
| static int acl7225b_di_insn(struct comedi_device *dev, |
| struct comedi_subdevice *s, |
| struct comedi_insn *insn, unsigned int *data) |
| { |
| data[1] = inb(dev->iobase + (unsigned long)s->private) | |
| (inb(dev->iobase + (unsigned long)s->private + 1) << 8); |
| |
| return insn->n; |
| } |
| |
| static int acl7225b_attach(struct comedi_device *dev, |
| struct comedi_devconfig *it) |
| { |
| const struct boardtype *board = comedi_board(dev); |
| struct comedi_subdevice *s; |
| int iobase, iorange; |
| int ret; |
| |
| iobase = it->options[0]; |
| iorange = board->io_range; |
| printk(KERN_INFO "comedi%d: acl7225b: board=%s 0x%04x\n", dev->minor, |
| board->name, iobase); |
| if (!request_region(iobase, iorange, "acl7225b")) { |
| printk(KERN_ERR "comedi%d: request_region failed - I/O port conflict\n", |
| dev->minor); |
| return -EIO; |
| } |
| dev->board_name = board->name; |
| dev->iobase = iobase; |
| dev->irq = 0; |
| |
| ret = comedi_alloc_subdevices(dev, 3); |
| if (ret) |
| return ret; |
| |
| s = &dev->subdevices[0]; |
| /* Relays outputs */ |
| s->type = COMEDI_SUBD_DO; |
| s->subdev_flags = SDF_WRITABLE; |
| s->maxdata = 1; |
| s->n_chan = 16; |
| s->insn_bits = acl7225b_do_insn; |
| s->range_table = &range_digital; |
| s->private = (void *)ACL7225_RIO_LO; |
| |
| s = &dev->subdevices[1]; |
| /* Relays status */ |
| s->type = COMEDI_SUBD_DI; |
| s->subdev_flags = SDF_READABLE; |
| s->maxdata = 1; |
| s->n_chan = 16; |
| s->insn_bits = acl7225b_di_insn; |
| s->range_table = &range_digital; |
| s->private = (void *)ACL7225_RIO_LO; |
| |
| s = &dev->subdevices[2]; |
| /* Isolated digital inputs */ |
| s->type = COMEDI_SUBD_DI; |
| s->subdev_flags = SDF_READABLE; |
| s->maxdata = 1; |
| s->n_chan = 16; |
| s->insn_bits = acl7225b_di_insn; |
| s->range_table = &range_digital; |
| s->private = (void *)ACL7225_DI_LO; |
| |
| return 0; |
| } |
| |
| static void acl7225b_detach(struct comedi_device *dev) |
| { |
| const struct boardtype *board = comedi_board(dev); |
| |
| if (dev->iobase) |
| release_region(dev->iobase, board->io_range); |
| } |
| |
| static const struct boardtype boardtypes[] = { |
| { "acl7225b", ACL7225_SIZE, }, |
| { "p16r16dio", P16R16DIO_SIZE, }, |
| }; |
| |
| static struct comedi_driver acl7225b_driver = { |
| .driver_name = "acl7225b", |
| .module = THIS_MODULE, |
| .attach = acl7225b_attach, |
| .detach = acl7225b_detach, |
| .board_name = &boardtypes[0].name, |
| .num_names = ARRAY_SIZE(boardtypes), |
| .offset = sizeof(struct boardtype), |
| }; |
| module_comedi_driver(acl7225b_driver); |
| |
| MODULE_AUTHOR("Comedi http://www.comedi.org"); |
| MODULE_DESCRIPTION("Comedi low-level driver"); |
| MODULE_LICENSE("GPL"); |