diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/acl7225b.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/acl7225b.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/acl7225b.c b/drivers/staging/comedi/drivers/acl7225b.c new file mode 100644 index 000000000000..b21320f0959f --- /dev/null +++ b/drivers/staging/comedi/drivers/acl7225b.c @@ -0,0 +1,149 @@ +/* + * 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) */ + +static int acl7225b_attach(struct comedi_device *dev, struct comedi_devconfig * it); +static int acl7225b_detach(struct comedi_device *dev); + +struct boardtype { + const char *name; // driver name + int io_range; // len of I/O space +}; + +static const struct boardtype boardtypes[] = { + {"acl7225b", ACL7225_SIZE,}, + {"p16r16dio", P16R16DIO_SIZE,}, +}; + +#define n_boardtypes (sizeof(boardtypes)/sizeof(struct boardtype)) +#define this_board ((const struct boardtype *)dev->board_ptr) + +static struct comedi_driver driver_acl7225b = { + driver_name:"acl7225b", + module:THIS_MODULE, + attach:acl7225b_attach, + detach:acl7225b_detach, + board_name:&boardtypes[0].name, + num_names:n_boardtypes, + offset:sizeof(struct boardtype), +}; + +COMEDI_INITCLEANUP(driver_acl7225b); + +static int acl7225b_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]); + } + 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 2; +} + +static int acl7225b_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 + (unsigned long)s->private) | + (inb(dev->iobase + (unsigned long)s->private + 1) << 8); + + return 2; +} + +static int acl7225b_attach(struct comedi_device *dev, struct comedi_devconfig * it) +{ + struct comedi_subdevice *s; + int iobase, iorange; + + iobase = it->options[0]; + iorange = this_board->io_range; + printk("comedi%d: acl7225b: board=%s 0x%04x ", dev->minor, + this_board->name, iobase); + if (!request_region(iobase, iorange, "acl7225b")) { + printk("I/O port conflict\n"); + return -EIO; + } + dev->board_name = this_board->name; + dev->iobase = iobase; + dev->irq = 0; + + if (alloc_subdevices(dev, 3) < 0) + return -ENOMEM; + + 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; + + printk("\n"); + + return 0; +} + +static int acl7225b_detach(struct comedi_device *dev) +{ + printk("comedi%d: acl7225b: remove\n", dev->minor); + + if (dev->iobase) + release_region(dev->iobase, this_board->io_range); + + return 0; +} |