1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * adl_pci6208.c
4 * Comedi driver for ADLink 6208 series cards
5 *
6 * COMEDI - Linux Control and Measurement Device Interface
7 * Copyright (C) 2000 David A. Schleef <ds@schleef.org>
8 */
9
10 /*
11 * Driver: adl_pci6208
12 * Description: ADLink PCI-6208/6216 Series Multi-channel Analog Output Cards
13 * Devices: [ADLink] PCI-6208 (adl_pci6208), PCI-6216
14 * Author: nsyeow <nsyeow@pd.jaring.my>
15 * Updated: Wed, 11 Feb 2015 11:37:18 +0000
16 * Status: untested
17 *
18 * Configuration Options: not applicable, uses PCI auto config
19 *
20 * All supported devices share the same PCI device ID and are treated as a
21 * PCI-6216 with 16 analog output channels. On a PCI-6208, the upper 8
22 * channels exist in registers, but don't go to DAC chips.
23 */
24
25 #include <linux/module.h>
26 #include <linux/delay.h>
27 #include <linux/comedi/comedi_pci.h>
28
29 /*
30 * PCI-6208/6216-GL register map
31 */
32 #define PCI6208_AO_CONTROL(x) (0x00 + (2 * (x)))
33 #define PCI6208_AO_STATUS 0x00
34 #define PCI6208_AO_STATUS_DATA_SEND BIT(0)
35 #define PCI6208_DIO 0x40
36 #define PCI6208_DIO_DO_MASK (0x0f)
37 #define PCI6208_DIO_DO_SHIFT (0)
38 #define PCI6208_DIO_DI_MASK (0xf0)
39 #define PCI6208_DIO_DI_SHIFT (4)
40
pci6208_ao_eoc(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned long context)41 static int pci6208_ao_eoc(struct comedi_device *dev,
42 struct comedi_subdevice *s,
43 struct comedi_insn *insn,
44 unsigned long context)
45 {
46 unsigned int status;
47
48 status = inw(dev->iobase + PCI6208_AO_STATUS);
49 if ((status & PCI6208_AO_STATUS_DATA_SEND) == 0)
50 return 0;
51 return -EBUSY;
52 }
53
pci6208_ao_insn_write(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)54 static int pci6208_ao_insn_write(struct comedi_device *dev,
55 struct comedi_subdevice *s,
56 struct comedi_insn *insn,
57 unsigned int *data)
58 {
59 unsigned int chan = CR_CHAN(insn->chanspec);
60 int ret;
61 int i;
62
63 for (i = 0; i < insn->n; i++) {
64 unsigned int val = data[i];
65
66 /* D/A transfer rate is 2.2us */
67 ret = comedi_timeout(dev, s, insn, pci6208_ao_eoc, 0);
68 if (ret)
69 return ret;
70
71 /* the hardware expects two's complement values */
72 outw(comedi_offset_munge(s, val),
73 dev->iobase + PCI6208_AO_CONTROL(chan));
74
75 s->readback[chan] = val;
76 }
77
78 return insn->n;
79 }
80
pci6208_di_insn_bits(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)81 static int pci6208_di_insn_bits(struct comedi_device *dev,
82 struct comedi_subdevice *s,
83 struct comedi_insn *insn,
84 unsigned int *data)
85 {
86 unsigned int val;
87
88 val = inw(dev->iobase + PCI6208_DIO);
89 val = (val & PCI6208_DIO_DI_MASK) >> PCI6208_DIO_DI_SHIFT;
90
91 data[1] = val;
92
93 return insn->n;
94 }
95
pci6208_do_insn_bits(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)96 static int pci6208_do_insn_bits(struct comedi_device *dev,
97 struct comedi_subdevice *s,
98 struct comedi_insn *insn,
99 unsigned int *data)
100 {
101 if (comedi_dio_update_state(s, data))
102 outw(s->state, dev->iobase + PCI6208_DIO);
103
104 data[1] = s->state;
105
106 return insn->n;
107 }
108
pci6208_auto_attach(struct comedi_device * dev,unsigned long context_unused)109 static int pci6208_auto_attach(struct comedi_device *dev,
110 unsigned long context_unused)
111 {
112 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
113 struct comedi_subdevice *s;
114 unsigned int val;
115 int ret;
116
117 ret = comedi_pci_enable(dev);
118 if (ret)
119 return ret;
120 dev->iobase = pci_resource_start(pcidev, 2);
121
122 ret = comedi_alloc_subdevices(dev, 3);
123 if (ret)
124 return ret;
125
126 s = &dev->subdevices[0];
127 /* analog output subdevice */
128 s->type = COMEDI_SUBD_AO;
129 s->subdev_flags = SDF_WRITABLE;
130 s->n_chan = 16; /* Only 8 usable on PCI-6208 */
131 s->maxdata = 0xffff;
132 s->range_table = &range_bipolar10;
133 s->insn_write = pci6208_ao_insn_write;
134
135 ret = comedi_alloc_subdev_readback(s);
136 if (ret)
137 return ret;
138
139 s = &dev->subdevices[1];
140 /* digital input subdevice */
141 s->type = COMEDI_SUBD_DI;
142 s->subdev_flags = SDF_READABLE;
143 s->n_chan = 4;
144 s->maxdata = 1;
145 s->range_table = &range_digital;
146 s->insn_bits = pci6208_di_insn_bits;
147
148 s = &dev->subdevices[2];
149 /* digital output subdevice */
150 s->type = COMEDI_SUBD_DO;
151 s->subdev_flags = SDF_WRITABLE;
152 s->n_chan = 4;
153 s->maxdata = 1;
154 s->range_table = &range_digital;
155 s->insn_bits = pci6208_do_insn_bits;
156
157 /*
158 * Get the read back signals from the digital outputs
159 * and save it as the initial state for the subdevice.
160 */
161 val = inw(dev->iobase + PCI6208_DIO);
162 val = (val & PCI6208_DIO_DO_MASK) >> PCI6208_DIO_DO_SHIFT;
163 s->state = val;
164
165 return 0;
166 }
167
168 static struct comedi_driver adl_pci6208_driver = {
169 .driver_name = "adl_pci6208",
170 .module = THIS_MODULE,
171 .auto_attach = pci6208_auto_attach,
172 .detach = comedi_pci_detach,
173 };
174
adl_pci6208_pci_probe(struct pci_dev * dev,const struct pci_device_id * id)175 static int adl_pci6208_pci_probe(struct pci_dev *dev,
176 const struct pci_device_id *id)
177 {
178 return comedi_pci_auto_config(dev, &adl_pci6208_driver,
179 id->driver_data);
180 }
181
182 static const struct pci_device_id adl_pci6208_pci_table[] = {
183 { PCI_DEVICE(PCI_VENDOR_ID_ADLINK, 0x6208) },
184 { PCI_DEVICE_SUB(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
185 0x9999, 0x6208) },
186 { 0 }
187 };
188 MODULE_DEVICE_TABLE(pci, adl_pci6208_pci_table);
189
190 static struct pci_driver adl_pci6208_pci_driver = {
191 .name = "adl_pci6208",
192 .id_table = adl_pci6208_pci_table,
193 .probe = adl_pci6208_pci_probe,
194 .remove = comedi_pci_auto_unconfig,
195 };
196 module_comedi_pci_driver(adl_pci6208_driver, adl_pci6208_pci_driver);
197
198 MODULE_AUTHOR("Comedi https://www.comedi.org");
199 MODULE_DESCRIPTION("Comedi driver for ADLink 6208 series cards");
200 MODULE_LICENSE("GPL");
201