1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * comedi/drivers/contec_pci_dio.c 4 * 5 * COMEDI - Linux Control and Measurement Device Interface 6 * Copyright (C) 2000 David A. Schleef <ds@schleef.org> 7 */ 8 9 /* 10 * Driver: contec_pci_dio 11 * Description: Contec PIO1616L digital I/O board 12 * Devices: [Contec] PIO1616L (contec_pci_dio) 13 * Author: Stefano Rivoir <s.rivoir@gts.it> 14 * Updated: Wed, 27 Jun 2007 13:00:06 +0100 15 * Status: works 16 * 17 * Configuration Options: not applicable, uses comedi PCI auto config 18 */ 19 20 #include <linux/module.h> 21 #include <linux/comedi/comedi_pci.h> 22 23 /* 24 * Register map 25 */ 26 #define PIO1616L_DI_REG 0x00 27 #define PIO1616L_DO_REG 0x02 28 29 static int contec_do_insn_bits(struct comedi_device *dev, 30 struct comedi_subdevice *s, 31 struct comedi_insn *insn, 32 unsigned int *data) 33 { 34 if (comedi_dio_update_state(s, data)) 35 outw(s->state, dev->iobase + PIO1616L_DO_REG); 36 37 data[1] = s->state; 38 39 return insn->n; 40 } 41 42 static int contec_di_insn_bits(struct comedi_device *dev, 43 struct comedi_subdevice *s, 44 struct comedi_insn *insn, unsigned int *data) 45 { 46 data[1] = inw(dev->iobase + PIO1616L_DI_REG); 47 48 return insn->n; 49 } 50 51 static int contec_auto_attach(struct comedi_device *dev, 52 unsigned long context_unused) 53 { 54 struct pci_dev *pcidev = comedi_to_pci_dev(dev); 55 struct comedi_subdevice *s; 56 int ret; 57 58 ret = comedi_pci_enable(dev); 59 if (ret) 60 return ret; 61 dev->iobase = pci_resource_start(pcidev, 0); 62 63 ret = comedi_alloc_subdevices(dev, 2); 64 if (ret) 65 return ret; 66 67 s = &dev->subdevices[0]; 68 s->type = COMEDI_SUBD_DI; 69 s->subdev_flags = SDF_READABLE; 70 s->n_chan = 16; 71 s->maxdata = 1; 72 s->range_table = &range_digital; 73 s->insn_bits = contec_di_insn_bits; 74 75 s = &dev->subdevices[1]; 76 s->type = COMEDI_SUBD_DO; 77 s->subdev_flags = SDF_WRITABLE; 78 s->n_chan = 16; 79 s->maxdata = 1; 80 s->range_table = &range_digital; 81 s->insn_bits = contec_do_insn_bits; 82 83 return 0; 84 } 85 86 static struct comedi_driver contec_pci_dio_driver = { 87 .driver_name = "contec_pci_dio", 88 .module = THIS_MODULE, 89 .auto_attach = contec_auto_attach, 90 .detach = comedi_pci_detach, 91 }; 92 93 static int contec_pci_dio_pci_probe(struct pci_dev *dev, 94 const struct pci_device_id *id) 95 { 96 return comedi_pci_auto_config(dev, &contec_pci_dio_driver, 97 id->driver_data); 98 } 99 100 static const struct pci_device_id contec_pci_dio_pci_table[] = { 101 { PCI_DEVICE(PCI_VENDOR_ID_CONTEC, 0x8172) }, 102 { 0 } 103 }; 104 MODULE_DEVICE_TABLE(pci, contec_pci_dio_pci_table); 105 106 static struct pci_driver contec_pci_dio_pci_driver = { 107 .name = "contec_pci_dio", 108 .id_table = contec_pci_dio_pci_table, 109 .probe = contec_pci_dio_pci_probe, 110 .remove = comedi_pci_auto_unconfig, 111 }; 112 module_comedi_pci_driver(contec_pci_dio_driver, contec_pci_dio_pci_driver); 113 114 MODULE_AUTHOR("Comedi https://www.comedi.org"); 115 MODULE_DESCRIPTION("Comedi low-level driver"); 116 MODULE_LICENSE("GPL"); 117