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e184e2be | 1 | // SPDX-License-Identifier: GPL-2.0+ |
d6a929b7 | 2 | /* |
62c701d7 RKM |
3 | * comedi/drivers/dt2815.c |
4 | * Hardware driver for Data Translation DT2815 | |
5 | * | |
6 | * COMEDI - Linux Control and Measurement Device Interface | |
7 | * Copyright (C) 1999 Anders Blomdell <anders.blomdell@control.lth.se> | |
d6a929b7 DS |
8 | */ |
9 | /* | |
62c701d7 RKM |
10 | * Driver: dt2815 |
11 | * Description: Data Translation DT2815 | |
12 | * Author: ds | |
13 | * Status: mostly complete, untested | |
14 | * Devices: [Data Translation] DT2815 (dt2815) | |
15 | * | |
16 | * I'm not sure anyone has ever tested this board. If you have information | |
17 | * contrary, please update. | |
18 | * | |
19 | * Configuration options: | |
20 | * [0] - I/O port base base address | |
21 | * [1] - IRQ (unused) | |
22 | * [2] - Voltage unipolar/bipolar configuration | |
23 | * 0 == unipolar 5V (0V -- +5V) | |
24 | * 1 == bipolar 5V (-5V -- +5V) | |
25 | * [3] - Current offset configuration | |
26 | * 0 == disabled (0mA -- +32mAV) | |
27 | * 1 == enabled (+4mA -- +20mAV) | |
28 | * [4] - Firmware program configuration | |
29 | * 0 == program 1 (see manual table 5-4) | |
30 | * 1 == program 2 (see manual table 5-4) | |
31 | * 2 == program 3 (see manual table 5-4) | |
32 | * 3 == program 4 (see manual table 5-4) | |
33 | * [5] - Analog output 0 range configuration | |
34 | * 0 == voltage | |
35 | * 1 == current | |
36 | * [6] - Analog output 1 range configuration (same options) | |
37 | * [7] - Analog output 2 range configuration (same options) | |
38 | * [8] - Analog output 3 range configuration (same options) | |
39 | * [9] - Analog output 4 range configuration (same options) | |
40 | * [10] - Analog output 5 range configuration (same options) | |
41 | * [11] - Analog output 6 range configuration (same options) | |
42 | * [12] - Analog output 7 range configuration (same options) | |
43 | */ | |
d6a929b7 | 44 | |
ce157f80 | 45 | #include <linux/module.h> |
d6a929b7 DS |
46 | #include "../comedidev.h" |
47 | ||
d6a929b7 DS |
48 | #include <linux/delay.h> |
49 | ||
d6a929b7 DS |
50 | #define DT2815_DATA 0 |
51 | #define DT2815_STATUS 1 | |
52 | ||
0b011a6f | 53 | struct dt2815_private { |
9ced1de6 | 54 | const struct comedi_lrange *range_type_list[8]; |
790c5541 | 55 | unsigned int ao_readback[8]; |
0b011a6f BP |
56 | }; |
57 | ||
8a62fcbd HS |
58 | static int dt2815_ao_status(struct comedi_device *dev, |
59 | struct comedi_subdevice *s, | |
60 | struct comedi_insn *insn, | |
61 | unsigned long context) | |
d6a929b7 | 62 | { |
8a62fcbd | 63 | unsigned int status; |
d6a929b7 | 64 | |
8a62fcbd HS |
65 | status = inb(dev->iobase + DT2815_STATUS); |
66 | if (status == context) | |
67 | return 0; | |
68 | return -EBUSY; | |
d6a929b7 DS |
69 | } |
70 | ||
0a85b6f0 MT |
71 | static int dt2815_ao_insn_read(struct comedi_device *dev, |
72 | struct comedi_subdevice *s, | |
73 | struct comedi_insn *insn, unsigned int *data) | |
d6a929b7 | 74 | { |
9a1a6cf8 | 75 | struct dt2815_private *devpriv = dev->private; |
d6a929b7 DS |
76 | int i; |
77 | int chan = CR_CHAN(insn->chanspec); | |
78 | ||
0acc516a | 79 | for (i = 0; i < insn->n; i++) |
d6a929b7 | 80 | data[i] = devpriv->ao_readback[chan]; |
d6a929b7 DS |
81 | |
82 | return i; | |
83 | } | |
84 | ||
da91b269 | 85 | static int dt2815_ao_insn(struct comedi_device *dev, struct comedi_subdevice *s, |
0a85b6f0 | 86 | struct comedi_insn *insn, unsigned int *data) |
d6a929b7 | 87 | { |
9a1a6cf8 | 88 | struct dt2815_private *devpriv = dev->private; |
d6a929b7 DS |
89 | int i; |
90 | int chan = CR_CHAN(insn->chanspec); | |
d6a929b7 | 91 | unsigned int lo, hi; |
8a62fcbd | 92 | int ret; |
d6a929b7 DS |
93 | |
94 | for (i = 0; i < insn->n; i++) { | |
ed87d33d | 95 | /* FIXME: lo bit 0 chooses voltage output or current output */ |
d6a929b7 DS |
96 | lo = ((data[i] & 0x0f) << 4) | (chan << 1) | 0x01; |
97 | hi = (data[i] & 0xff0) >> 4; | |
98 | ||
8a62fcbd | 99 | ret = comedi_timeout(dev, s, insn, dt2815_ao_status, 0x00); |
22ca19d9 | 100 | if (ret) |
8a62fcbd | 101 | return ret; |
d6a929b7 DS |
102 | |
103 | outb(lo, dev->iobase + DT2815_DATA); | |
104 | ||
8a62fcbd | 105 | ret = comedi_timeout(dev, s, insn, dt2815_ao_status, 0x10); |
22ca19d9 | 106 | if (ret) |
8a62fcbd | 107 | return ret; |
8a62fcbd | 108 | |
ed87d33d IA |
109 | outb(hi, dev->iobase + DT2815_DATA); |
110 | ||
d6a929b7 DS |
111 | devpriv->ao_readback[chan] = data[i]; |
112 | } | |
113 | return i; | |
114 | } | |
115 | ||
116 | /* | |
62c701d7 RKM |
117 | * options[0] Board base address |
118 | * options[1] IRQ (not applicable) | |
119 | * options[2] Voltage unipolar/bipolar configuration | |
120 | * 0 == unipolar 5V (0V -- +5V) | |
121 | * 1 == bipolar 5V (-5V -- +5V) | |
122 | * options[3] Current offset configuration | |
123 | * 0 == disabled (0mA -- +32mAV) | |
124 | * 1 == enabled (+4mA -- +20mAV) | |
125 | * options[4] Firmware program configuration | |
126 | * 0 == program 1 (see manual table 5-4) | |
127 | * 1 == program 2 (see manual table 5-4) | |
128 | * 2 == program 3 (see manual table 5-4) | |
129 | * 3 == program 4 (see manual table 5-4) | |
130 | * options[5] Analog output 0 range configuration | |
131 | * 0 == voltage | |
132 | * 1 == current | |
133 | * options[6] Analog output 1 range configuration | |
134 | * ... | |
135 | * options[12] Analog output 7 range configuration | |
136 | * 0 == voltage | |
137 | * 1 == current | |
d6a929b7 DS |
138 | */ |
139 | ||
da91b269 | 140 | static int dt2815_attach(struct comedi_device *dev, struct comedi_devconfig *it) |
d6a929b7 | 141 | { |
9a1a6cf8 | 142 | struct dt2815_private *devpriv; |
34c43922 | 143 | struct comedi_subdevice *s; |
d6a929b7 | 144 | int i; |
9ced1de6 | 145 | const struct comedi_lrange *current_range_type, *voltage_range_type; |
8b6c5694 | 146 | int ret; |
d6a929b7 | 147 | |
862755ec | 148 | ret = comedi_request_region(dev, it->options[0], 0x2); |
19b3da3e HS |
149 | if (ret) |
150 | return ret; | |
d6a929b7 | 151 | |
8b6c5694 HS |
152 | ret = comedi_alloc_subdevices(dev, 1); |
153 | if (ret) | |
154 | return ret; | |
155 | ||
0bdab509 | 156 | devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); |
c34fa261 HS |
157 | if (!devpriv) |
158 | return -ENOMEM; | |
d6a929b7 | 159 | |
76c40c47 | 160 | s = &dev->subdevices[0]; |
d6a929b7 DS |
161 | /* ao subdevice */ |
162 | s->type = COMEDI_SUBD_AO; | |
163 | s->subdev_flags = SDF_WRITABLE; | |
164 | s->maxdata = 0xfff; | |
165 | s->n_chan = 8; | |
166 | s->insn_write = dt2815_ao_insn; | |
167 | s->insn_read = dt2815_ao_insn_read; | |
168 | s->range_table_list = devpriv->range_type_list; | |
169 | ||
170 | current_range_type = (it->options[3]) | |
2c71c4ff | 171 | ? &range_4_20mA : &range_0_32mA; |
d6a929b7 | 172 | voltage_range_type = (it->options[2]) |
0a85b6f0 | 173 | ? &range_bipolar5 : &range_unipolar5; |
d6a929b7 DS |
174 | for (i = 0; i < 8; i++) { |
175 | devpriv->range_type_list[i] = (it->options[5 + i]) | |
0a85b6f0 | 176 | ? current_range_type : voltage_range_type; |
d6a929b7 DS |
177 | } |
178 | ||
179 | /* Init the 2815 */ | |
180 | outb(0x00, dev->iobase + DT2815_STATUS); | |
181 | for (i = 0; i < 100; i++) { | |
182 | /* This is incredibly slow (approx 20 ms) */ | |
183 | unsigned int status; | |
184 | ||
1b2d7f19 | 185 | usleep_range(1000, 3000); |
d6a929b7 DS |
186 | status = inb(dev->iobase + DT2815_STATUS); |
187 | if (status == 4) { | |
188 | unsigned int program; | |
f61b57a4 | 189 | |
d6a929b7 DS |
190 | program = (it->options[4] & 0x3) << 3 | 0x7; |
191 | outb(program, dev->iobase + DT2815_DATA); | |
5b7b0eb2 HS |
192 | dev_dbg(dev->class_dev, "program: 0x%x (@t=%d)\n", |
193 | program, i); | |
d6a929b7 DS |
194 | break; |
195 | } else if (status != 0x00) { | |
5b7b0eb2 HS |
196 | dev_dbg(dev->class_dev, |
197 | "unexpected status 0x%x (@t=%d)\n", | |
198 | status, i); | |
0acc516a | 199 | if (status & 0x60) |
d6a929b7 | 200 | outb(0x00, dev->iobase + DT2815_STATUS); |
d6a929b7 DS |
201 | } |
202 | } | |
203 | ||
d6a929b7 DS |
204 | return 0; |
205 | } | |
206 | ||
294f930d | 207 | static struct comedi_driver dt2815_driver = { |
b85eec95 HS |
208 | .driver_name = "dt2815", |
209 | .module = THIS_MODULE, | |
210 | .attach = dt2815_attach, | |
21208519 | 211 | .detach = comedi_legacy_detach, |
b85eec95 | 212 | }; |
294f930d | 213 | module_comedi_driver(dt2815_driver); |
b85eec95 | 214 | |
90f703d3 AT |
215 | MODULE_AUTHOR("Comedi http://www.comedi.org"); |
216 | MODULE_DESCRIPTION("Comedi low-level driver"); | |
217 | MODULE_LICENSE("GPL"); |