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
28 #include "../comedi_pci.h"
29
30 /*
31 * PCI-6208/6216-GL register map
32 */
33 #define PCI6208_AO_CONTROL(x) (0x00 + (2 * (x)))
34 #define PCI6208_AO_STATUS 0x00
35 #define PCI6208_AO_STATUS_DATA_SEND BIT(0)
36 #define PCI6208_DIO 0x40
37 #define PCI6208_DIO_DO_MASK (0x0f)
38 #define PCI6208_DIO_DO_SHIFT (0)
39 #define PCI6208_DIO_DI_MASK (0xf0)
40 #define PCI6208_DIO_DI_SHIFT (4)
41
pci6208_ao_eoc(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned long context)42 static int pci6208_ao_eoc(struct comedi_device *dev,
43 struct comedi_subdevice *s,
44 struct comedi_insn *insn,
45 unsigned long context)
46 {
47 unsigned int status;
48
49 status = inw(dev->iobase + PCI6208_AO_STATUS);
50 if ((status & PCI6208_AO_STATUS_DATA_SEND) == 0)
51 return 0;
52 return -EBUSY;
53 }
54
pci6208_ao_insn_write(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)55 static int pci6208_ao_insn_write(struct comedi_device *dev,
56 struct comedi_subdevice *s,
57 struct comedi_insn *insn,
58 unsigned int *data)
59 {
60 unsigned int chan = CR_CHAN(insn->chanspec);
61 int ret;
62 int i;
63
64 for (i = 0; i < insn->n; i++) {
65 unsigned int val = data[i];
66
67 /* D/A transfer rate is 2.2us */
68 ret = comedi_timeout(dev, s, insn, pci6208_ao_eoc, 0);
69 if (ret)
70 return ret;
71
72 /* the hardware expects two's complement values */
73 outw(comedi_offset_munge(s, val),
74 dev->iobase + PCI6208_AO_CONTROL(chan));
75
76 s->readback[chan] = val;
77 }
78
79 return insn->n;
80 }
81
pci6208_di_insn_bits(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)82 static int pci6208_di_insn_bits(struct comedi_device *dev,
83 struct comedi_subdevice *s,
84 struct comedi_insn *insn,
85 unsigned int *data)
86 {
87 unsigned int val;
88
89 val = inw(dev->iobase + PCI6208_DIO);
90 val = (val & PCI6208_DIO_DI_MASK) >> PCI6208_DIO_DI_SHIFT;
91
92 data[1] = val;
93
94 return insn->n;
95 }
96
pci6208_do_insn_bits(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)97 static int pci6208_do_insn_bits(struct comedi_device *dev,
98 struct comedi_subdevice *s,
99 struct comedi_insn *insn,
100 unsigned int *data)
101 {
102 if (comedi_dio_update_state(s, data))
103 outw(s->state, dev->iobase + PCI6208_DIO);
104
105 data[1] = s->state;
106
107 return insn->n;
108 }
109
pci6208_auto_attach(struct comedi_device * dev,unsigned long context_unused)110 static int pci6208_auto_attach(struct comedi_device *dev,
111 unsigned long context_unused)
112 {
113 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
114 struct comedi_subdevice *s;
115 unsigned int val;
116 int ret;
117
118 ret = comedi_pci_enable(dev);
119 if (ret)
120 return ret;
121 dev->iobase = pci_resource_start(pcidev, 2);
122
123 ret = comedi_alloc_subdevices(dev, 3);
124 if (ret)
125 return ret;
126
127 s = &dev->subdevices[0];
128 /* analog output subdevice */
129 s->type = COMEDI_SUBD_AO;
130 s->subdev_flags = SDF_WRITABLE;
131 s->n_chan = 16; /* Only 8 usable on PCI-6208 */
132 s->maxdata = 0xffff;
133 s->range_table = &range_bipolar10;
134 s->insn_write = pci6208_ao_insn_write;
135
136 ret = comedi_alloc_subdev_readback(s);
137 if (ret)
138 return ret;
139
140 s = &dev->subdevices[1];
141 /* digital input subdevice */
142 s->type = COMEDI_SUBD_DI;
143 s->subdev_flags = SDF_READABLE;
144 s->n_chan = 4;
145 s->maxdata = 1;
146 s->range_table = &range_digital;
147 s->insn_bits = pci6208_di_insn_bits;
148
149 s = &dev->subdevices[2];
150 /* digital output subdevice */
151 s->type = COMEDI_SUBD_DO;
152 s->subdev_flags = SDF_WRITABLE;
153 s->n_chan = 4;
154 s->maxdata = 1;
155 s->range_table = &range_digital;
156 s->insn_bits = pci6208_do_insn_bits;
157
158 /*
159 * Get the read back signals from the digital outputs
160 * and save it as the initial state for the subdevice.
161 */
162 val = inw(dev->iobase + PCI6208_DIO);
163 val = (val & PCI6208_DIO_DO_MASK) >> PCI6208_DIO_DO_SHIFT;
164 s->state = val;
165
166 return 0;
167 }
168
169 static struct comedi_driver adl_pci6208_driver = {
170 .driver_name = "adl_pci6208",
171 .module = THIS_MODULE,
172 .auto_attach = pci6208_auto_attach,
173 .detach = comedi_pci_detach,
174 };
175
adl_pci6208_pci_probe(struct pci_dev * dev,const struct pci_device_id * id)176 static int adl_pci6208_pci_probe(struct pci_dev *dev,
177 const struct pci_device_id *id)
178 {
179 return comedi_pci_auto_config(dev, &adl_pci6208_driver,
180 id->driver_data);
181 }
182
183 static const struct pci_device_id adl_pci6208_pci_table[] = {
184 { PCI_DEVICE(PCI_VENDOR_ID_ADLINK, 0x6208) },
185 { PCI_DEVICE_SUB(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
186 0x9999, 0x6208) },
187 { 0 }
188 };
189 MODULE_DEVICE_TABLE(pci, adl_pci6208_pci_table);
190
191 static struct pci_driver adl_pci6208_pci_driver = {
192 .name = "adl_pci6208",
193 .id_table = adl_pci6208_pci_table,
194 .probe = adl_pci6208_pci_probe,
195 .remove = comedi_pci_auto_unconfig,
196 };
197 module_comedi_pci_driver(adl_pci6208_driver, adl_pci6208_pci_driver);
198
199 MODULE_AUTHOR("Comedi https://www.comedi.org");
200 MODULE_DESCRIPTION("Comedi driver for ADLink 6208 series cards");
201 MODULE_LICENSE("GPL");
202