diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/amplc_pci263.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/amplc_pci263.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/amplc_pci263.c b/drivers/staging/comedi/drivers/amplc_pci263.c new file mode 100644 index 000000000000..8b57533bf406 --- /dev/null +++ b/drivers/staging/comedi/drivers/amplc_pci263.c @@ -0,0 +1,127 @@ +/* + comedi/drivers/amplc_pci263.c + Driver for Amplicon PCI263 relay board. + + Copyright (C) 2002 MEV Ltd. <http://www.mev.co.uk/> + + COMEDI - Linux Control and Measurement Device Interface + Copyright (C) 2000 David A. Schleef <ds@schleef.org> + + 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: amplc_pci263 +Description: Amplicon PCI263 +Author: Ian Abbott <abbotti@mev.co.uk> +Devices: [Amplicon] PCI263 (amplc_pci263) +Updated: Fri, 12 Apr 2013 15:19:36 +0100 +Status: works + +Configuration options: not applicable, uses PCI auto config + +The board appears as one subdevice, with 16 digital outputs, each +connected to a reed-relay. Relay contacts are closed when output is 1. +The state of the outputs can be read. +*/ + +#include <linux/pci.h> + +#include "../comedidev.h" + +#define PCI263_DRIVER_NAME "amplc_pci263" + +/* PCI263 PCI configuration register information */ +#define PCI_DEVICE_ID_AMPLICON_PCI263 0x000c + +static int pci263_do_insn_bits(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, unsigned int *data) +{ + /* The insn data is a mask in data[0] and the new data + * in data[1], each channel cooresponding to a bit. */ + if (data[0]) { + s->state &= ~data[0]; + s->state |= data[0] & data[1]; + /* Write out the new digital output lines */ + outb(s->state & 0xFF, dev->iobase); + outb(s->state >> 8, dev->iobase + 1); + } + return insn->n; +} + +static int pci263_auto_attach(struct comedi_device *dev, + unsigned long context_unused) +{ + struct pci_dev *pci_dev = comedi_to_pci_dev(dev); + struct comedi_subdevice *s; + int ret; + + ret = comedi_pci_enable(dev); + if (ret) + return ret; + + dev->iobase = pci_resource_start(pci_dev, 2); + ret = comedi_alloc_subdevices(dev, 1); + if (ret) + return ret; + + s = &dev->subdevices[0]; + /* digital output subdevice */ + s->type = COMEDI_SUBD_DO; + s->subdev_flags = SDF_READABLE | SDF_WRITABLE; + s->n_chan = 16; + s->maxdata = 1; + s->range_table = &range_digital; + s->insn_bits = pci263_do_insn_bits; + /* read initial relay state */ + s->state = inb(dev->iobase) | (inb(dev->iobase + 1) << 8); + + dev_info(dev->class_dev, "%s (pci %s) attached\n", dev->board_name, + pci_name(pci_dev)); + return 0; +} + +static struct comedi_driver amplc_pci263_driver = { + .driver_name = PCI263_DRIVER_NAME, + .module = THIS_MODULE, + .auto_attach = pci263_auto_attach, + .detach = comedi_pci_disable, +}; + +static DEFINE_PCI_DEVICE_TABLE(pci263_pci_table) = { + { PCI_DEVICE(PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI263) }, + {0} +}; +MODULE_DEVICE_TABLE(pci, pci263_pci_table); + +static int amplc_pci263_pci_probe(struct pci_dev *dev, + const struct pci_device_id *id) +{ + return comedi_pci_auto_config(dev, &lc_pci263_driver, + id->driver_data); +} + +static struct pci_driver amplc_pci263_pci_driver = { + .name = PCI263_DRIVER_NAME, + .id_table = pci263_pci_table, + .probe = &lc_pci263_pci_probe, + .remove = comedi_pci_auto_unconfig, +}; +module_comedi_pci_driver(amplc_pci263_driver, amplc_pci263_pci_driver); + +MODULE_AUTHOR("Comedi http://www.comedi.org"); +MODULE_DESCRIPTION("Comedi driver for Amplicon PCI263 relay board"); +MODULE_LICENSE("GPL"); |