1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | /* |
3 | * comedi/drivers/adl_pci8164.c |
4 | * |
5 | * Hardware comedi driver for PCI-8164 Adlink card |
6 | * Copyright (C) 2004 Michel Lachine <mike@mikelachaine.ca> |
7 | */ |
8 | |
9 | /* |
10 | * Driver: adl_pci8164 |
11 | * Description: Driver for the Adlink PCI-8164 4 Axes Motion Control board |
12 | * Devices: [ADLink] PCI-8164 (adl_pci8164) |
13 | * Author: Michel Lachaine <mike@mikelachaine.ca> |
14 | * Status: experimental |
15 | * Updated: Mon, 14 Apr 2008 15:10:32 +0100 |
16 | * |
17 | * Configuration Options: not applicable, uses PCI auto config |
18 | */ |
19 | |
20 | #include <linux/kernel.h> |
21 | #include <linux/module.h> |
22 | #include <linux/comedi/comedi_pci.h> |
23 | |
24 | #define PCI8164_AXIS(x) ((x) * 0x08) |
25 | #define PCI8164_CMD_MSTS_REG 0x00 |
26 | #define PCI8164_OTP_SSTS_REG 0x02 |
27 | #define PCI8164_BUF0_REG 0x04 |
28 | #define PCI8164_BUF1_REG 0x06 |
29 | |
30 | static int adl_pci8164_insn_read(struct comedi_device *dev, |
31 | struct comedi_subdevice *s, |
32 | struct comedi_insn *insn, |
33 | unsigned int *data) |
34 | { |
35 | unsigned long offset = (unsigned long)s->private; |
36 | unsigned int chan = CR_CHAN(insn->chanspec); |
37 | int i; |
38 | |
39 | for (i = 0; i < insn->n; i++) |
40 | data[i] = inw(port: dev->iobase + PCI8164_AXIS(chan) + offset); |
41 | |
42 | return insn->n; |
43 | } |
44 | |
45 | static int adl_pci8164_insn_write(struct comedi_device *dev, |
46 | struct comedi_subdevice *s, |
47 | struct comedi_insn *insn, |
48 | unsigned int *data) |
49 | { |
50 | unsigned long offset = (unsigned long)s->private; |
51 | unsigned int chan = CR_CHAN(insn->chanspec); |
52 | int i; |
53 | |
54 | for (i = 0; i < insn->n; i++) |
55 | outw(value: data[i], port: dev->iobase + PCI8164_AXIS(chan) + offset); |
56 | |
57 | return insn->n; |
58 | } |
59 | |
60 | static int adl_pci8164_auto_attach(struct comedi_device *dev, |
61 | unsigned long context_unused) |
62 | { |
63 | struct pci_dev *pcidev = comedi_to_pci_dev(dev); |
64 | struct comedi_subdevice *s; |
65 | int ret; |
66 | |
67 | ret = comedi_pci_enable(dev); |
68 | if (ret) |
69 | return ret; |
70 | dev->iobase = pci_resource_start(pcidev, 2); |
71 | |
72 | ret = comedi_alloc_subdevices(dev, num_subdevices: 4); |
73 | if (ret) |
74 | return ret; |
75 | |
76 | /* read MSTS register / write CMD register for each axis (channel) */ |
77 | s = &dev->subdevices[0]; |
78 | s->type = COMEDI_SUBD_PROC; |
79 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE; |
80 | s->n_chan = 4; |
81 | s->maxdata = 0xffff; |
82 | s->len_chanlist = 4; |
83 | s->insn_read = adl_pci8164_insn_read; |
84 | s->insn_write = adl_pci8164_insn_write; |
85 | s->private = (void *)PCI8164_CMD_MSTS_REG; |
86 | |
87 | /* read SSTS register / write OTP register for each axis (channel) */ |
88 | s = &dev->subdevices[1]; |
89 | s->type = COMEDI_SUBD_PROC; |
90 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE; |
91 | s->n_chan = 4; |
92 | s->maxdata = 0xffff; |
93 | s->len_chanlist = 4; |
94 | s->insn_read = adl_pci8164_insn_read; |
95 | s->insn_write = adl_pci8164_insn_write; |
96 | s->private = (void *)PCI8164_OTP_SSTS_REG; |
97 | |
98 | /* read/write BUF0 register for each axis (channel) */ |
99 | s = &dev->subdevices[2]; |
100 | s->type = COMEDI_SUBD_PROC; |
101 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE; |
102 | s->n_chan = 4; |
103 | s->maxdata = 0xffff; |
104 | s->len_chanlist = 4; |
105 | s->insn_read = adl_pci8164_insn_read; |
106 | s->insn_write = adl_pci8164_insn_write; |
107 | s->private = (void *)PCI8164_BUF0_REG; |
108 | |
109 | /* read/write BUF1 register for each axis (channel) */ |
110 | s = &dev->subdevices[3]; |
111 | s->type = COMEDI_SUBD_PROC; |
112 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE; |
113 | s->n_chan = 4; |
114 | s->maxdata = 0xffff; |
115 | s->len_chanlist = 4; |
116 | s->insn_read = adl_pci8164_insn_read; |
117 | s->insn_write = adl_pci8164_insn_write; |
118 | s->private = (void *)PCI8164_BUF1_REG; |
119 | |
120 | return 0; |
121 | } |
122 | |
123 | static struct comedi_driver adl_pci8164_driver = { |
124 | .driver_name = "adl_pci8164" , |
125 | .module = THIS_MODULE, |
126 | .auto_attach = adl_pci8164_auto_attach, |
127 | .detach = comedi_pci_detach, |
128 | }; |
129 | |
130 | static int adl_pci8164_pci_probe(struct pci_dev *dev, |
131 | const struct pci_device_id *id) |
132 | { |
133 | return comedi_pci_auto_config(pcidev: dev, driver: &adl_pci8164_driver, |
134 | context: id->driver_data); |
135 | } |
136 | |
137 | static const struct pci_device_id adl_pci8164_pci_table[] = { |
138 | { PCI_DEVICE(PCI_VENDOR_ID_ADLINK, 0x8164) }, |
139 | { 0 } |
140 | }; |
141 | MODULE_DEVICE_TABLE(pci, adl_pci8164_pci_table); |
142 | |
143 | static struct pci_driver adl_pci8164_pci_driver = { |
144 | .name = "adl_pci8164" , |
145 | .id_table = adl_pci8164_pci_table, |
146 | .probe = adl_pci8164_pci_probe, |
147 | .remove = comedi_pci_auto_unconfig, |
148 | }; |
149 | module_comedi_pci_driver(adl_pci8164_driver, adl_pci8164_pci_driver); |
150 | |
151 | MODULE_AUTHOR("Comedi https://www.comedi.org" ); |
152 | MODULE_DESCRIPTION("Comedi low-level driver" ); |
153 | MODULE_LICENSE("GPL" ); |
154 | |