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(value: s->state, port: 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(port: 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, num_subdevices: 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(pcidev: dev, driver: &contec_pci_dio_driver, |
97 | context: 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 | |