1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * comedi/drivers/dyna_pci10xx.c
4 * Copyright (C) 2011 Prashant Shah, pshah.mumbai@gmail.com
5 */
6
7 /*
8 * Driver: dyna_pci10xx
9 * Description: Dynalog India PCI DAQ Cards, http://www.dynalogindia.com/
10 * Devices: [Dynalog] PCI-1050 (dyna_pci1050)
11 * Author: Prashant Shah <pshah.mumbai@gmail.com>
12 * Status: Stable
13 *
14 * Developed at Automation Labs, Chemical Dept., IIT Bombay, India.
15 * Prof. Kannan Moudgalya <kannan@iitb.ac.in>
16 * http://www.iitb.ac.in
17 *
18 * Notes :
19 * - Dynalog India Pvt. Ltd. does not have a registered PCI Vendor ID and
20 * they are using the PLX Technlogies Vendor ID since that is the PCI Chip
21 * used in the card.
22 * - Dynalog India Pvt. Ltd. has provided the internal register specification
23 * for their cards in their manuals.
24 */
25
26 #include <linux/module.h>
27 #include <linux/delay.h>
28 #include <linux/mutex.h>
29 #include <linux/comedi/comedi_pci.h>
30
31 #define READ_TIMEOUT 50
32
33 static const struct comedi_lrange range_pci1050_ai = {
34 3, {
35 BIP_RANGE(10),
36 BIP_RANGE(5),
37 UNI_RANGE(10)
38 }
39 };
40
41 static const char range_codes_pci1050_ai[] = { 0x00, 0x10, 0x30 };
42
43 struct dyna_pci10xx_private {
44 struct mutex mutex;
45 unsigned long BADR3;
46 };
47
dyna_pci10xx_ai_eoc(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned long context)48 static int dyna_pci10xx_ai_eoc(struct comedi_device *dev,
49 struct comedi_subdevice *s,
50 struct comedi_insn *insn,
51 unsigned long context)
52 {
53 unsigned int status;
54
55 status = inw_p(dev->iobase);
56 if (status & BIT(15))
57 return 0;
58 return -EBUSY;
59 }
60
dyna_pci10xx_insn_read_ai(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)61 static int dyna_pci10xx_insn_read_ai(struct comedi_device *dev,
62 struct comedi_subdevice *s,
63 struct comedi_insn *insn,
64 unsigned int *data)
65 {
66 struct dyna_pci10xx_private *devpriv = dev->private;
67 int n;
68 u16 d = 0;
69 int ret = 0;
70 unsigned int chan, range;
71
72 /* get the channel number and range */
73 chan = CR_CHAN(insn->chanspec);
74 range = range_codes_pci1050_ai[CR_RANGE((insn->chanspec))];
75
76 mutex_lock(&devpriv->mutex);
77 /* convert n samples */
78 for (n = 0; n < insn->n; n++) {
79 /* trigger conversion */
80 smp_mb();
81 outw_p(0x0000 + range + chan, dev->iobase + 2);
82 usleep_range(10, 20);
83
84 ret = comedi_timeout(dev, s, insn, dyna_pci10xx_ai_eoc, 0);
85 if (ret)
86 break;
87
88 /* read data */
89 d = inw_p(dev->iobase);
90 /* mask the first 4 bits - EOC bits */
91 d &= 0x0FFF;
92 data[n] = d;
93 }
94 mutex_unlock(&devpriv->mutex);
95
96 /* return the number of samples read/written */
97 return ret ? ret : n;
98 }
99
100 /* analog output callback */
dyna_pci10xx_insn_write_ao(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)101 static int dyna_pci10xx_insn_write_ao(struct comedi_device *dev,
102 struct comedi_subdevice *s,
103 struct comedi_insn *insn,
104 unsigned int *data)
105 {
106 struct dyna_pci10xx_private *devpriv = dev->private;
107 int n;
108
109 mutex_lock(&devpriv->mutex);
110 for (n = 0; n < insn->n; n++) {
111 smp_mb();
112 /* trigger conversion and write data */
113 outw_p(data[n], dev->iobase);
114 usleep_range(10, 20);
115 }
116 mutex_unlock(&devpriv->mutex);
117 return n;
118 }
119
120 /* digital input bit interface */
dyna_pci10xx_di_insn_bits(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)121 static int dyna_pci10xx_di_insn_bits(struct comedi_device *dev,
122 struct comedi_subdevice *s,
123 struct comedi_insn *insn,
124 unsigned int *data)
125 {
126 struct dyna_pci10xx_private *devpriv = dev->private;
127 u16 d = 0;
128
129 mutex_lock(&devpriv->mutex);
130 smp_mb();
131 d = inw_p(devpriv->BADR3);
132 usleep_range(10, 100);
133
134 /* on return the data[0] contains output and data[1] contains input */
135 data[1] = d;
136 data[0] = s->state;
137 mutex_unlock(&devpriv->mutex);
138 return insn->n;
139 }
140
dyna_pci10xx_do_insn_bits(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)141 static int dyna_pci10xx_do_insn_bits(struct comedi_device *dev,
142 struct comedi_subdevice *s,
143 struct comedi_insn *insn,
144 unsigned int *data)
145 {
146 struct dyna_pci10xx_private *devpriv = dev->private;
147
148 mutex_lock(&devpriv->mutex);
149 if (comedi_dio_update_state(s, data)) {
150 smp_mb();
151 outw_p(s->state, devpriv->BADR3);
152 usleep_range(10, 100);
153 }
154
155 data[1] = s->state;
156 mutex_unlock(&devpriv->mutex);
157
158 return insn->n;
159 }
160
dyna_pci10xx_auto_attach(struct comedi_device * dev,unsigned long context_unused)161 static int dyna_pci10xx_auto_attach(struct comedi_device *dev,
162 unsigned long context_unused)
163 {
164 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
165 struct dyna_pci10xx_private *devpriv;
166 struct comedi_subdevice *s;
167 int ret;
168
169 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
170 if (!devpriv)
171 return -ENOMEM;
172
173 ret = comedi_pci_enable(dev);
174 if (ret)
175 return ret;
176 dev->iobase = pci_resource_start(pcidev, 2);
177 devpriv->BADR3 = pci_resource_start(pcidev, 3);
178
179 mutex_init(&devpriv->mutex);
180
181 ret = comedi_alloc_subdevices(dev, 4);
182 if (ret)
183 return ret;
184
185 /* analog input */
186 s = &dev->subdevices[0];
187 s->type = COMEDI_SUBD_AI;
188 s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF;
189 s->n_chan = 16;
190 s->maxdata = 0x0FFF;
191 s->range_table = &range_pci1050_ai;
192 s->insn_read = dyna_pci10xx_insn_read_ai;
193
194 /* analog output */
195 s = &dev->subdevices[1];
196 s->type = COMEDI_SUBD_AO;
197 s->subdev_flags = SDF_WRITABLE;
198 s->n_chan = 1;
199 s->maxdata = 0x0FFF;
200 s->range_table = &range_unipolar10;
201 s->insn_write = dyna_pci10xx_insn_write_ao;
202
203 /* digital input */
204 s = &dev->subdevices[2];
205 s->type = COMEDI_SUBD_DI;
206 s->subdev_flags = SDF_READABLE;
207 s->n_chan = 16;
208 s->maxdata = 1;
209 s->range_table = &range_digital;
210 s->insn_bits = dyna_pci10xx_di_insn_bits;
211
212 /* digital output */
213 s = &dev->subdevices[3];
214 s->type = COMEDI_SUBD_DO;
215 s->subdev_flags = SDF_WRITABLE;
216 s->n_chan = 16;
217 s->maxdata = 1;
218 s->range_table = &range_digital;
219 s->state = 0;
220 s->insn_bits = dyna_pci10xx_do_insn_bits;
221
222 return 0;
223 }
224
dyna_pci10xx_detach(struct comedi_device * dev)225 static void dyna_pci10xx_detach(struct comedi_device *dev)
226 {
227 struct dyna_pci10xx_private *devpriv = dev->private;
228
229 comedi_pci_detach(dev);
230 if (devpriv)
231 mutex_destroy(&devpriv->mutex);
232 }
233
234 static struct comedi_driver dyna_pci10xx_driver = {
235 .driver_name = "dyna_pci10xx",
236 .module = THIS_MODULE,
237 .auto_attach = dyna_pci10xx_auto_attach,
238 .detach = dyna_pci10xx_detach,
239 };
240
dyna_pci10xx_pci_probe(struct pci_dev * dev,const struct pci_device_id * id)241 static int dyna_pci10xx_pci_probe(struct pci_dev *dev,
242 const struct pci_device_id *id)
243 {
244 return comedi_pci_auto_config(dev, &dyna_pci10xx_driver,
245 id->driver_data);
246 }
247
248 static const struct pci_device_id dyna_pci10xx_pci_table[] = {
249 { PCI_DEVICE(PCI_VENDOR_ID_PLX, 0x1050) },
250 { 0 }
251 };
252 MODULE_DEVICE_TABLE(pci, dyna_pci10xx_pci_table);
253
254 static struct pci_driver dyna_pci10xx_pci_driver = {
255 .name = "dyna_pci10xx",
256 .id_table = dyna_pci10xx_pci_table,
257 .probe = dyna_pci10xx_pci_probe,
258 .remove = comedi_pci_auto_unconfig,
259 };
260 module_comedi_pci_driver(dyna_pci10xx_driver, dyna_pci10xx_pci_driver);
261
262 MODULE_LICENSE("GPL");
263 MODULE_AUTHOR("Prashant Shah <pshah.mumbai@gmail.com>");
264 MODULE_DESCRIPTION("Comedi based drivers for Dynalog PCI DAQ cards");
265