diff options
Diffstat (limited to 'drivers/comedi/drivers/amplc_pci263.c')
| -rw-r--r-- | drivers/comedi/drivers/amplc_pci263.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/comedi/drivers/amplc_pci263.c b/drivers/comedi/drivers/amplc_pci263.c new file mode 100644 index 000000000..1609665c4 --- /dev/null +++ b/drivers/comedi/drivers/amplc_pci263.c @@ -0,0 +1,110 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Driver for Amplicon PCI263 relay board. + * + * Copyright (C) 2002 MEV Ltd. <https://www.mev.co.uk/> + * + * COMEDI - Linux Control and Measurement Device Interface + * Copyright (C) 2000 David A. Schleef <ds@schleef.org> + */ + +/* + * 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/module.h> +#include <linux/comedi/comedi_pci.h> + +/* PCI263 registers */ +#define PCI263_DO_0_7_REG 0x00 +#define PCI263_DO_8_15_REG 0x01 + +static int pci263_do_insn_bits(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) +{ + if (comedi_dio_update_state(s, data)) { + outb(s->state & 0xff, dev->iobase + PCI263_DO_0_7_REG); + outb((s->state >> 8) & 0xff, dev->iobase + PCI263_DO_8_15_REG); + } + + data[1] = s->state; + + 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; + + /* Digital Output subdevice */ + s = &dev->subdevices[0]; + s->type = COMEDI_SUBD_DO; + s->subdev_flags = 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 + PCI263_DO_0_7_REG) | + (inb(dev->iobase + PCI263_DO_8_15_REG) << 8); + + return 0; +} + +static struct comedi_driver amplc_pci263_driver = { + .driver_name = "amplc_pci263", + .module = THIS_MODULE, + .auto_attach = pci263_auto_attach, + .detach = comedi_pci_detach, +}; + +static const struct pci_device_id pci263_pci_table[] = { + { PCI_DEVICE(PCI_VENDOR_ID_AMPLICON, 0x000c) }, + {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 = "amplc_pci263", + .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 https://www.comedi.org"); +MODULE_DESCRIPTION("Comedi driver for Amplicon PCI263 relay board"); +MODULE_LICENSE("GPL"); |