Commit | Line | Data |
---|---|---|
124b13b2 | 1 | /* |
31922394 HS |
2 | * comedi/drivers/ni_labpc.c |
3 | * Driver for National Instruments Lab-PC series boards and compatibles | |
4 | * Copyright (C) 2001-2003 Frank Mori Hess <fmhess@users.sourceforge.net> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | */ | |
124b13b2 FMH |
20 | |
21 | /* | |
31922394 HS |
22 | * Driver: ni_labpc |
23 | * Description: National Instruments Lab-PC (& compatibles) | |
24 | * Devices: (National Instruments) Lab-PC-1200 [lab-pc-1200] | |
25 | * (National Instruments) Lab-PC-1200AI [lab-pc-1200ai] | |
26 | * (National Instruments) Lab-PC+ [lab-pc+] | |
31922394 HS |
27 | * Author: Frank Mori Hess <fmhess@users.sourceforge.net> |
28 | * Status: works | |
29 | * | |
30 | * Configuration options - ISA boards: | |
31 | * [0] - I/O port base address | |
32 | * [1] - IRQ (optional, required for timed or externally triggered | |
33 | * conversions) | |
34 | * [2] - DMA channel (optional) | |
35 | * | |
31922394 HS |
36 | * Tested with lab-pc-1200. For the older Lab-PC+, not all input |
37 | * ranges and analog references will work, the available ranges/arefs | |
38 | * will depend on how you have configured the jumpers on your board | |
39 | * (see your owner's manual). | |
40 | * | |
41 | * Kernel-level ISA plug-and-play support for the lab-pc-1200 boards | |
42 | * has not yet been added to the driver, mainly due to the fact that | |
43 | * I don't know the device id numbers. If you have one of these boards, | |
44 | * please file a bug report at http://comedi.org/ so I can get the | |
45 | * necessary information from you. | |
46 | * | |
47 | * The 1200 series boards have onboard calibration dacs for correcting | |
48 | * analog input/output offsets and gains. The proper settings for these | |
49 | * caldacs are stored on the board's eeprom. To read the caldac values | |
50 | * from the eeprom and store them into a file that can be then be used | |
51 | * by comedilib, use the comedi_calibrate program. | |
52 | * | |
53 | * The Lab-pc+ has quirky chanlist requirements when scanning multiple | |
54 | * channels. Multiple channel scan sequence must start at highest channel, | |
55 | * then decrement down to channel 0. The rest of the cards can scan down | |
56 | * like lab-pc+ or scan up from channel zero. Chanlists consisting of all | |
57 | * one channel are also legal, and allow you to pace conversions in bursts. | |
58 | * | |
59 | * NI manuals: | |
60 | * 341309a (labpc-1200 register manual) | |
31922394 HS |
61 | * 320502b (lab-pc+) |
62 | */ | |
124b13b2 | 63 | |
25436dc9 | 64 | #include <linux/interrupt.h> |
5a0e3ad6 | 65 | #include <linux/slab.h> |
845d131e | 66 | #include <linux/io.h> |
33782dd5 HS |
67 | #include <linux/delay.h> |
68 | ||
124b13b2 FMH |
69 | #include "../comedidev.h" |
70 | ||
124b13b2 FMH |
71 | #include <asm/dma.h> |
72 | ||
73 | #include "8253.h" | |
74 | #include "8255.h" | |
124b13b2 FMH |
75 | #include "comedi_fc.h" |
76 | #include "ni_labpc.h" | |
77 | ||
42cb6a82 HS |
78 | /* |
79 | * Register map (all registers are 8-bit) | |
80 | */ | |
81 | #define STAT1_REG 0x00 /* R: Status 1 reg */ | |
82 | #define STAT1_DAVAIL (1 << 0) | |
83 | #define STAT1_OVERRUN (1 << 1) | |
84 | #define STAT1_OVERFLOW (1 << 2) | |
85 | #define STAT1_CNTINT (1 << 3) | |
86 | #define STAT1_GATA0 (1 << 5) | |
87 | #define STAT1_EXTGATA0 (1 << 6) | |
88 | #define CMD1_REG 0x00 /* W: Command 1 reg */ | |
89 | #define CMD1_MA(x) (((x) & 0x7) << 0) | |
90 | #define CMD1_TWOSCMP (1 << 3) | |
91 | #define CMD1_GAIN_MASK (7 << 4) | |
92 | #define CMD1_SCANEN (1 << 7) | |
93 | #define CMD2_REG 0x01 /* W: Command 2 reg */ | |
94 | #define CMD2_PRETRIG (1 << 0) | |
95 | #define CMD2_HWTRIG (1 << 1) | |
96 | #define CMD2_SWTRIG (1 << 2) | |
97 | #define CMD2_TBSEL (1 << 3) | |
98 | #define CMD2_2SDAC0 (1 << 4) | |
99 | #define CMD2_2SDAC1 (1 << 5) | |
100 | #define CMD2_LDAC(x) (1 << (6 + (x))) | |
101 | #define CMD3_REG 0x02 /* W: Command 3 reg */ | |
102 | #define CMD3_DMAEN (1 << 0) | |
103 | #define CMD3_DIOINTEN (1 << 1) | |
104 | #define CMD3_DMATCINTEN (1 << 2) | |
105 | #define CMD3_CNTINTEN (1 << 3) | |
106 | #define CMD3_ERRINTEN (1 << 4) | |
107 | #define CMD3_FIFOINTEN (1 << 5) | |
108 | #define ADC_START_CONVERT_REG 0x03 /* W: Start Convert reg */ | |
109 | #define DAC_LSB_REG(x) (0x04 + 2 * (x)) /* W: DAC0/1 LSB reg */ | |
110 | #define DAC_MSB_REG(x) (0x05 + 2 * (x)) /* W: DAC0/1 MSB reg */ | |
111 | #define ADC_FIFO_CLEAR_REG 0x08 /* W: A/D FIFO Clear reg */ | |
112 | #define ADC_FIFO_REG 0x0a /* R: A/D FIFO reg */ | |
113 | #define DMATC_CLEAR_REG 0x0a /* W: DMA Interrupt Clear reg */ | |
114 | #define TIMER_CLEAR_REG 0x0c /* W: Timer Interrupt Clear reg */ | |
115 | #define CMD6_REG 0x0e /* W: Command 6 reg */ | |
116 | #define CMD6_NRSE (1 << 0) | |
117 | #define CMD6_ADCUNI (1 << 1) | |
118 | #define CMD6_DACUNI(x) (1 << (2 + (x))) | |
119 | #define CMD6_HFINTEN (1 << 5) | |
120 | #define CMD6_DQINTEN (1 << 6) | |
121 | #define CMD6_SCANUP (1 << 7) | |
122 | #define CMD4_REG 0x0f /* W: Command 3 reg */ | |
123 | #define CMD4_INTSCAN (1 << 0) | |
124 | #define CMD4_EOIRCV (1 << 1) | |
125 | #define CMD4_ECLKDRV (1 << 2) | |
126 | #define CMD4_SEDIFF (1 << 3) | |
127 | #define CMD4_ECLKRCV (1 << 4) | |
128 | #define DIO_BASE_REG 0x10 /* R/W: 8255 DIO base reg */ | |
129 | #define COUNTER_A_BASE_REG 0x14 /* R/W: 8253 Counter A base reg */ | |
42cb6a82 HS |
130 | #define COUNTER_B_BASE_REG 0x18 /* R/W: 8253 Counter B base reg */ |
131 | #define CMD5_REG 0x1c /* W: Command 5 reg */ | |
132 | #define CMD5_WRTPRT (1 << 2) | |
133 | #define CMD5_DITHEREN (1 << 3) | |
134 | #define CMD5_CALDACLD (1 << 4) | |
135 | #define CMD5_SCLK (1 << 5) | |
136 | #define CMD5_SDATA (1 << 6) | |
137 | #define CMD5_EEPROMCS (1 << 7) | |
138 | #define STAT2_REG 0x1d /* R: Status 2 reg */ | |
139 | #define STAT2_PROMOUT (1 << 0) | |
140 | #define STAT2_OUTA1 (1 << 1) | |
141 | #define STAT2_FIFONHF (1 << 2) | |
142 | #define INTERVAL_COUNT_REG 0x1e /* W: Interval Counter Data reg */ | |
143 | #define INTERVAL_STROBE_REG 0x1f /* W: Interval Counter Strobe reg */ | |
124b13b2 | 144 | |
488ec9f1 HS |
145 | #define LABPC_SIZE 0x20 /* size of ISA io region */ |
146 | #define LABPC_TIMER_BASE 500 /* 2 MHz master clock */ | |
810c73c7 HS |
147 | #define LABPC_ADC_TIMEOUT 1000 |
148 | ||
6f73fbce IA |
149 | enum scan_mode { |
150 | MODE_SINGLE_CHAN, | |
151 | MODE_SINGLE_CHAN_INTERVAL, | |
152 | MODE_MULT_CHAN_UP, | |
153 | MODE_MULT_CHAN_DOWN, | |
154 | }; | |
155 | ||
1b3e0c80 HS |
156 | static const int labpc_plus_ai_gain_bits[] = { |
157 | 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70, | |
158 | 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70, | |
124b13b2 | 159 | }; |
0a85b6f0 | 160 | |
9ced1de6 | 161 | static const struct comedi_lrange range_labpc_plus_ai = { |
1b3e0c80 HS |
162 | 16, { |
163 | BIP_RANGE(5), | |
164 | BIP_RANGE(4), | |
165 | BIP_RANGE(2.5), | |
166 | BIP_RANGE(1), | |
167 | BIP_RANGE(0.5), | |
168 | BIP_RANGE(0.25), | |
169 | BIP_RANGE(0.1), | |
170 | BIP_RANGE(0.05), | |
171 | UNI_RANGE(10), | |
172 | UNI_RANGE(8), | |
173 | UNI_RANGE(5), | |
174 | UNI_RANGE(2), | |
175 | UNI_RANGE(1), | |
176 | UNI_RANGE(0.5), | |
177 | UNI_RANGE(0.2), | |
178 | UNI_RANGE(0.1) | |
179 | } | |
124b13b2 FMH |
180 | }; |
181 | ||
1b3e0c80 HS |
182 | const int labpc_1200_ai_gain_bits[] = { |
183 | 0x00, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70, | |
184 | 0x00, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70, | |
124b13b2 | 185 | }; |
0656bb35 | 186 | EXPORT_SYMBOL_GPL(labpc_1200_ai_gain_bits); |
0a85b6f0 | 187 | |
9ced1de6 | 188 | const struct comedi_lrange range_labpc_1200_ai = { |
1b3e0c80 HS |
189 | 14, { |
190 | BIP_RANGE(5), | |
191 | BIP_RANGE(2.5), | |
192 | BIP_RANGE(1), | |
193 | BIP_RANGE(0.5), | |
194 | BIP_RANGE(0.25), | |
195 | BIP_RANGE(0.1), | |
196 | BIP_RANGE(0.05), | |
197 | UNI_RANGE(10), | |
198 | UNI_RANGE(5), | |
199 | UNI_RANGE(2), | |
200 | UNI_RANGE(1), | |
201 | UNI_RANGE(0.5), | |
202 | UNI_RANGE(0.2), | |
203 | UNI_RANGE(0.1) | |
204 | } | |
124b13b2 | 205 | }; |
0656bb35 | 206 | EXPORT_SYMBOL_GPL(range_labpc_1200_ai); |
124b13b2 | 207 | |
9ced1de6 | 208 | static const struct comedi_lrange range_labpc_ao = { |
1b3e0c80 HS |
209 | 2, { |
210 | BIP_RANGE(5), | |
211 | UNI_RANGE(10) | |
212 | } | |
124b13b2 FMH |
213 | }; |
214 | ||
215 | /* functions that do inb/outb and readb/writeb so we can use | |
216 | * function pointers to decide which to use */ | |
217 | static inline unsigned int labpc_inb(unsigned long address) | |
218 | { | |
219 | return inb(address); | |
220 | } | |
0a85b6f0 | 221 | |
124b13b2 FMH |
222 | static inline void labpc_outb(unsigned int byte, unsigned long address) |
223 | { | |
224 | outb(byte, address); | |
225 | } | |
0a85b6f0 | 226 | |
124b13b2 FMH |
227 | static inline unsigned int labpc_readb(unsigned long address) |
228 | { | |
5743aaac | 229 | return readb((void __iomem *)address); |
124b13b2 | 230 | } |
0a85b6f0 | 231 | |
124b13b2 FMH |
232 | static inline void labpc_writeb(unsigned int byte, unsigned long address) |
233 | { | |
5743aaac | 234 | writeb(byte, (void __iomem *)address); |
124b13b2 FMH |
235 | } |
236 | ||
fa3cb219 | 237 | #ifdef CONFIG_COMEDI_NI_LABPC_ISA |
f65d971d | 238 | static const struct labpc_boardinfo labpc_boards[] = { |
124b13b2 | 239 | { |
f2c447ca HS |
240 | .name = "lab-pc-1200", |
241 | .ai_speed = 10000, | |
f2c447ca HS |
242 | .register_layout = labpc_1200_layout, |
243 | .has_ao = 1, | |
244 | .ai_range_table = &range_labpc_1200_ai, | |
245 | .ai_range_code = labpc_1200_ai_gain_bits, | |
f2c447ca HS |
246 | .ai_scan_up = 1, |
247 | }, { | |
248 | .name = "lab-pc-1200ai", | |
249 | .ai_speed = 10000, | |
f2c447ca HS |
250 | .register_layout = labpc_1200_layout, |
251 | .ai_range_table = &range_labpc_1200_ai, | |
252 | .ai_range_code = labpc_1200_ai_gain_bits, | |
f2c447ca HS |
253 | .ai_scan_up = 1, |
254 | }, { | |
255 | .name = "lab-pc+", | |
256 | .ai_speed = 12000, | |
f2c447ca HS |
257 | .register_layout = labpc_plus_layout, |
258 | .has_ao = 1, | |
259 | .ai_range_table = &range_labpc_plus_ai, | |
260 | .ai_range_code = labpc_plus_ai_gain_bits, | |
f2c447ca | 261 | }, |
124b13b2 | 262 | }; |
fa3cb219 | 263 | #endif |
124b13b2 | 264 | |
e41a6f6d SR |
265 | /* size in bytes of dma buffer */ |
266 | static const int dma_buffer_size = 0xff00; | |
267 | /* 2 bytes per sample */ | |
268 | static const int sample_size = 2; | |
124b13b2 | 269 | |
fbca05d6 HS |
270 | static int labpc_counter_load(struct comedi_device *dev, |
271 | unsigned long base_address, | |
272 | unsigned int counter_number, | |
273 | unsigned int count, unsigned int mode) | |
274 | { | |
275 | const struct labpc_boardinfo *board = comedi_board(dev); | |
276 | ||
277 | if (board->has_mmio) | |
278 | return i8254_mm_load((void __iomem *)base_address, 0, | |
279 | counter_number, count, mode); | |
280 | else | |
281 | return i8254_load(base_address, 0, counter_number, count, mode); | |
282 | } | |
283 | ||
463f9304 HS |
284 | static int labpc_counter_set_mode(struct comedi_device *dev, |
285 | unsigned long base_address, | |
286 | unsigned int counter_number, | |
287 | unsigned int mode) | |
288 | { | |
289 | const struct labpc_boardinfo *board = comedi_board(dev); | |
290 | ||
291 | if (board->has_mmio) | |
292 | return i8254_mm_set_mode((void __iomem *)base_address, 0, | |
293 | counter_number, mode); | |
294 | else | |
295 | return i8254_set_mode(base_address, 0, counter_number, mode); | |
296 | } | |
297 | ||
43a9411a HS |
298 | static bool labpc_range_is_unipolar(struct comedi_subdevice *s, |
299 | unsigned int range) | |
300 | { | |
43d092c6 | 301 | return s->range_table->range[range].min >= 0; |
43a9411a HS |
302 | } |
303 | ||
8a498667 HS |
304 | static int labpc_cancel(struct comedi_device *dev, struct comedi_subdevice *s) |
305 | { | |
306 | struct labpc_private *devpriv = dev->private; | |
307 | unsigned long flags; | |
308 | ||
309 | spin_lock_irqsave(&dev->spinlock, flags); | |
42cb6a82 HS |
310 | devpriv->cmd2 &= ~(CMD2_SWTRIG | CMD2_HWTRIG | CMD2_PRETRIG); |
311 | devpriv->write_byte(devpriv->cmd2, dev->iobase + CMD2_REG); | |
8a498667 HS |
312 | spin_unlock_irqrestore(&dev->spinlock, flags); |
313 | ||
314 | devpriv->cmd3 = 0; | |
42cb6a82 | 315 | devpriv->write_byte(devpriv->cmd3, dev->iobase + CMD3_REG); |
8a498667 HS |
316 | |
317 | return 0; | |
318 | } | |
319 | ||
8c2bc333 HS |
320 | static void labpc_ai_set_chan_and_gain(struct comedi_device *dev, |
321 | enum scan_mode mode, | |
322 | unsigned int chan, | |
323 | unsigned int range, | |
324 | unsigned int aref) | |
325 | { | |
326 | const struct labpc_boardinfo *board = comedi_board(dev); | |
327 | struct labpc_private *devpriv = dev->private; | |
328 | ||
329 | /* munge channel bits for differential/scan disabled mode */ | |
330 | if ((mode == MODE_SINGLE_CHAN || mode == MODE_SINGLE_CHAN_INTERVAL) && | |
331 | aref == AREF_DIFF) | |
332 | chan *= 2; | |
42cb6a82 | 333 | devpriv->cmd1 = CMD1_MA(chan); |
8c2bc333 HS |
334 | devpriv->cmd1 |= board->ai_range_code[range]; |
335 | ||
42cb6a82 | 336 | devpriv->write_byte(devpriv->cmd1, dev->iobase + CMD1_REG); |
8c2bc333 HS |
337 | } |
338 | ||
359553bb HS |
339 | static void labpc_setup_cmd6_reg(struct comedi_device *dev, |
340 | struct comedi_subdevice *s, | |
341 | enum scan_mode mode, | |
342 | enum transfer_type xfer, | |
343 | unsigned int range, | |
344 | unsigned int aref, | |
345 | bool ena_intr) | |
346 | { | |
347 | const struct labpc_boardinfo *board = comedi_board(dev); | |
348 | struct labpc_private *devpriv = dev->private; | |
349 | ||
350 | if (board->register_layout != labpc_1200_layout) | |
351 | return; | |
352 | ||
353 | /* reference inputs to ground or common? */ | |
354 | if (aref != AREF_GROUND) | |
42cb6a82 | 355 | devpriv->cmd6 |= CMD6_NRSE; |
359553bb | 356 | else |
42cb6a82 | 357 | devpriv->cmd6 &= ~CMD6_NRSE; |
359553bb HS |
358 | |
359 | /* bipolar or unipolar range? */ | |
360 | if (labpc_range_is_unipolar(s, range)) | |
42cb6a82 | 361 | devpriv->cmd6 |= CMD6_ADCUNI; |
359553bb | 362 | else |
42cb6a82 | 363 | devpriv->cmd6 &= ~CMD6_ADCUNI; |
359553bb HS |
364 | |
365 | /* interrupt on fifo half full? */ | |
366 | if (xfer == fifo_half_full_transfer) | |
42cb6a82 | 367 | devpriv->cmd6 |= CMD6_HFINTEN; |
359553bb | 368 | else |
42cb6a82 | 369 | devpriv->cmd6 &= ~CMD6_HFINTEN; |
359553bb HS |
370 | |
371 | /* enable interrupt on counter a1 terminal count? */ | |
372 | if (ena_intr) | |
42cb6a82 | 373 | devpriv->cmd6 |= CMD6_DQINTEN; |
359553bb | 374 | else |
42cb6a82 | 375 | devpriv->cmd6 &= ~CMD6_DQINTEN; |
359553bb HS |
376 | |
377 | /* are we scanning up or down through channels? */ | |
378 | if (mode == MODE_MULT_CHAN_UP) | |
42cb6a82 | 379 | devpriv->cmd6 |= CMD6_SCANUP; |
359553bb | 380 | else |
42cb6a82 | 381 | devpriv->cmd6 &= ~CMD6_SCANUP; |
359553bb | 382 | |
42cb6a82 | 383 | devpriv->write_byte(devpriv->cmd6, dev->iobase + CMD6_REG); |
359553bb HS |
384 | } |
385 | ||
3c4dfac8 HS |
386 | static unsigned int labpc_read_adc_fifo(struct comedi_device *dev) |
387 | { | |
388 | struct labpc_private *devpriv = dev->private; | |
389 | unsigned int lsb = devpriv->read_byte(dev->iobase + ADC_FIFO_REG); | |
390 | unsigned int msb = devpriv->read_byte(dev->iobase + ADC_FIFO_REG); | |
391 | ||
392 | return (msb << 8) | lsb; | |
393 | } | |
394 | ||
395 | static void labpc_clear_adc_fifo(struct comedi_device *dev) | |
124b13b2 | 396 | { |
9a1a6cf8 | 397 | struct labpc_private *devpriv = dev->private; |
78110bb8 | 398 | |
42cb6a82 | 399 | devpriv->write_byte(0x1, dev->iobase + ADC_FIFO_CLEAR_REG); |
3c4dfac8 | 400 | labpc_read_adc_fifo(dev); |
dd2aef64 | 401 | } |
124b13b2 | 402 | |
810c73c7 HS |
403 | static int labpc_ai_wait_for_data(struct comedi_device *dev, |
404 | int timeout) | |
405 | { | |
406 | struct labpc_private *devpriv = dev->private; | |
407 | int i; | |
408 | ||
409 | for (i = 0; i < timeout; i++) { | |
42cb6a82 HS |
410 | devpriv->stat1 = devpriv->read_byte(dev->iobase + STAT1_REG); |
411 | if (devpriv->stat1 & STAT1_DAVAIL) | |
810c73c7 HS |
412 | return 0; |
413 | udelay(1); | |
414 | } | |
415 | return -ETIME; | |
416 | } | |
417 | ||
28a10930 HS |
418 | static int labpc_ai_insn_read(struct comedi_device *dev, |
419 | struct comedi_subdevice *s, | |
420 | struct comedi_insn *insn, | |
421 | unsigned int *data) | |
dd2aef64 HS |
422 | { |
423 | struct labpc_private *devpriv = dev->private; | |
73f2b1d2 HS |
424 | unsigned int chan = CR_CHAN(insn->chanspec); |
425 | unsigned int range = CR_RANGE(insn->chanspec); | |
426 | unsigned int aref = CR_AREF(insn->chanspec); | |
810c73c7 HS |
427 | int ret; |
428 | int i; | |
124b13b2 | 429 | |
8a498667 HS |
430 | /* disable timed conversions, interrupt generation and dma */ |
431 | labpc_cancel(dev, s); | |
124b13b2 | 432 | |
8c2bc333 | 433 | labpc_ai_set_chan_and_gain(dev, MODE_SINGLE_CHAN, chan, range, aref); |
124b13b2 | 434 | |
359553bb HS |
435 | labpc_setup_cmd6_reg(dev, s, MODE_SINGLE_CHAN, fifo_not_empty_transfer, |
436 | range, aref, false); | |
437 | ||
74df5760 HS |
438 | /* setup cmd4 register */ |
439 | devpriv->cmd4 = 0; | |
42cb6a82 | 440 | devpriv->cmd4 |= CMD4_ECLKRCV; |
af81f093 | 441 | /* single-ended/differential */ |
73f2b1d2 | 442 | if (aref == AREF_DIFF) |
42cb6a82 HS |
443 | devpriv->cmd4 |= CMD4_SEDIFF; |
444 | devpriv->write_byte(devpriv->cmd4, dev->iobase + CMD4_REG); | |
124b13b2 | 445 | |
463f9304 | 446 | /* initialize pacer counter to prevent any problems */ |
f06563f0 HS |
447 | ret = labpc_counter_set_mode(dev, dev->iobase + COUNTER_A_BASE_REG, |
448 | 0, I8254_MODE2); | |
449 | if (ret) | |
450 | return ret; | |
7e2716cd | 451 | |
af81f093 | 452 | labpc_clear_adc_fifo(dev); |
7e2716cd | 453 | |
810c73c7 | 454 | for (i = 0; i < insn->n; i++) { |
af81f093 | 455 | /* trigger conversion */ |
42cb6a82 | 456 | devpriv->write_byte(0x1, dev->iobase + ADC_START_CONVERT_REG); |
7e2716cd | 457 | |
810c73c7 HS |
458 | ret = labpc_ai_wait_for_data(dev, LABPC_ADC_TIMEOUT); |
459 | if (ret) | |
460 | return ret; | |
461 | ||
462 | data[i] = labpc_read_adc_fifo(dev); | |
dd2aef64 | 463 | } |
9a1a6cf8 | 464 | |
810c73c7 | 465 | return insn->n; |
af81f093 | 466 | } |
124b13b2 | 467 | |
af81f093 HS |
468 | #ifdef CONFIG_ISA_DMA_API |
469 | /* utility function that suggests a dma transfer size in bytes */ | |
470 | static unsigned int labpc_suggest_transfer_size(const struct comedi_cmd *cmd) | |
471 | { | |
472 | unsigned int size; | |
473 | unsigned int freq; | |
124b13b2 | 474 | |
af81f093 HS |
475 | if (cmd->convert_src == TRIG_TIMER) |
476 | freq = 1000000000 / cmd->convert_arg; | |
477 | /* return some default value */ | |
478 | else | |
479 | freq = 0xffffffff; | |
124b13b2 | 480 | |
af81f093 HS |
481 | /* make buffer fill in no more than 1/3 second */ |
482 | size = (freq / 3) * sample_size; | |
124b13b2 | 483 | |
af81f093 HS |
484 | /* set a minimum and maximum size allowed */ |
485 | if (size > dma_buffer_size) | |
486 | size = dma_buffer_size - dma_buffer_size % sample_size; | |
487 | else if (size < sample_size) | |
488 | size = sample_size; | |
124b13b2 | 489 | |
af81f093 | 490 | return size; |
124b13b2 | 491 | } |
af81f093 | 492 | #endif |
124b13b2 | 493 | |
63a93381 HS |
494 | static bool labpc_use_continuous_mode(const struct comedi_cmd *cmd, |
495 | enum scan_mode mode) | |
124b13b2 | 496 | { |
63a93381 HS |
497 | if (mode == MODE_SINGLE_CHAN || cmd->scan_begin_src == TRIG_FOLLOW) |
498 | return true; | |
124b13b2 | 499 | |
63a93381 | 500 | return false; |
124b13b2 FMH |
501 | } |
502 | ||
6f73fbce IA |
503 | static unsigned int labpc_ai_convert_period(const struct comedi_cmd *cmd, |
504 | enum scan_mode mode) | |
124b13b2 FMH |
505 | { |
506 | if (cmd->convert_src != TRIG_TIMER) | |
507 | return 0; | |
508 | ||
6f73fbce | 509 | if (mode == MODE_SINGLE_CHAN && cmd->scan_begin_src == TRIG_TIMER) |
124b13b2 FMH |
510 | return cmd->scan_begin_arg; |
511 | ||
512 | return cmd->convert_arg; | |
513 | } | |
514 | ||
6f73fbce IA |
515 | static void labpc_set_ai_convert_period(struct comedi_cmd *cmd, |
516 | enum scan_mode mode, unsigned int ns) | |
124b13b2 FMH |
517 | { |
518 | if (cmd->convert_src != TRIG_TIMER) | |
519 | return; | |
520 | ||
6f73fbce | 521 | if (mode == MODE_SINGLE_CHAN && |
0a85b6f0 | 522 | cmd->scan_begin_src == TRIG_TIMER) { |
124b13b2 FMH |
523 | cmd->scan_begin_arg = ns; |
524 | if (cmd->convert_arg > cmd->scan_begin_arg) | |
525 | cmd->convert_arg = cmd->scan_begin_arg; | |
526 | } else | |
527 | cmd->convert_arg = ns; | |
528 | } | |
529 | ||
6f73fbce IA |
530 | static unsigned int labpc_ai_scan_period(const struct comedi_cmd *cmd, |
531 | enum scan_mode mode) | |
124b13b2 FMH |
532 | { |
533 | if (cmd->scan_begin_src != TRIG_TIMER) | |
534 | return 0; | |
535 | ||
6f73fbce | 536 | if (mode == MODE_SINGLE_CHAN && cmd->convert_src == TRIG_TIMER) |
124b13b2 FMH |
537 | return 0; |
538 | ||
539 | return cmd->scan_begin_arg; | |
540 | } | |
541 | ||
af81f093 HS |
542 | static void labpc_set_ai_scan_period(struct comedi_cmd *cmd, |
543 | enum scan_mode mode, unsigned int ns) | |
544 | { | |
545 | if (cmd->scan_begin_src != TRIG_TIMER) | |
546 | return; | |
547 | ||
548 | if (mode == MODE_SINGLE_CHAN && cmd->convert_src == TRIG_TIMER) | |
549 | return; | |
550 | ||
551 | cmd->scan_begin_arg = ns; | |
552 | } | |
553 | ||
554 | /* figures out what counter values to use based on command */ | |
555 | static void labpc_adc_timing(struct comedi_device *dev, struct comedi_cmd *cmd, | |
556 | enum scan_mode mode) | |
557 | { | |
558 | struct labpc_private *devpriv = dev->private; | |
559 | /* max value for 16 bit counter in mode 2 */ | |
560 | const int max_counter_value = 0x10000; | |
561 | /* min value for 16 bit counter in mode 2 */ | |
562 | const int min_counter_value = 2; | |
563 | unsigned int base_period; | |
564 | unsigned int scan_period; | |
565 | unsigned int convert_period; | |
566 | ||
567 | /* | |
568 | * if both convert and scan triggers are TRIG_TIMER, then they | |
569 | * both rely on counter b0 | |
570 | */ | |
571 | convert_period = labpc_ai_convert_period(cmd, mode); | |
572 | scan_period = labpc_ai_scan_period(cmd, mode); | |
573 | if (convert_period && scan_period) { | |
574 | /* | |
575 | * pick the lowest b0 divisor value we can (for maximum input | |
576 | * clock speed on convert and scan counters) | |
577 | */ | |
578 | devpriv->divisor_b0 = (scan_period - 1) / | |
579 | (LABPC_TIMER_BASE * max_counter_value) + 1; | |
580 | if (devpriv->divisor_b0 < min_counter_value) | |
581 | devpriv->divisor_b0 = min_counter_value; | |
582 | if (devpriv->divisor_b0 > max_counter_value) | |
583 | devpriv->divisor_b0 = max_counter_value; | |
584 | ||
585 | base_period = LABPC_TIMER_BASE * devpriv->divisor_b0; | |
586 | ||
587 | /* set a0 for conversion frequency and b1 for scan frequency */ | |
588 | switch (cmd->flags & TRIG_ROUND_MASK) { | |
589 | default: | |
590 | case TRIG_ROUND_NEAREST: | |
591 | devpriv->divisor_a0 = | |
592 | (convert_period + (base_period / 2)) / base_period; | |
593 | devpriv->divisor_b1 = | |
594 | (scan_period + (base_period / 2)) / base_period; | |
595 | break; | |
596 | case TRIG_ROUND_UP: | |
597 | devpriv->divisor_a0 = | |
598 | (convert_period + (base_period - 1)) / base_period; | |
599 | devpriv->divisor_b1 = | |
600 | (scan_period + (base_period - 1)) / base_period; | |
601 | break; | |
602 | case TRIG_ROUND_DOWN: | |
603 | devpriv->divisor_a0 = convert_period / base_period; | |
604 | devpriv->divisor_b1 = scan_period / base_period; | |
605 | break; | |
606 | } | |
607 | /* make sure a0 and b1 values are acceptable */ | |
608 | if (devpriv->divisor_a0 < min_counter_value) | |
609 | devpriv->divisor_a0 = min_counter_value; | |
610 | if (devpriv->divisor_a0 > max_counter_value) | |
611 | devpriv->divisor_a0 = max_counter_value; | |
612 | if (devpriv->divisor_b1 < min_counter_value) | |
613 | devpriv->divisor_b1 = min_counter_value; | |
614 | if (devpriv->divisor_b1 > max_counter_value) | |
615 | devpriv->divisor_b1 = max_counter_value; | |
616 | /* write corrected timings to command */ | |
617 | labpc_set_ai_convert_period(cmd, mode, | |
618 | base_period * devpriv->divisor_a0); | |
619 | labpc_set_ai_scan_period(cmd, mode, | |
620 | base_period * devpriv->divisor_b1); | |
621 | /* | |
622 | * if only one TRIG_TIMER is used, we can employ the generic | |
623 | * cascaded timing functions | |
624 | */ | |
625 | } else if (scan_period) { | |
626 | /* | |
627 | * calculate cascaded counter values | |
628 | * that give desired scan timing | |
629 | */ | |
630 | i8253_cascade_ns_to_timer_2div(LABPC_TIMER_BASE, | |
631 | &(devpriv->divisor_b1), | |
632 | &(devpriv->divisor_b0), | |
633 | &scan_period, | |
634 | cmd->flags & TRIG_ROUND_MASK); | |
635 | labpc_set_ai_scan_period(cmd, mode, scan_period); | |
636 | } else if (convert_period) { | |
637 | /* | |
638 | * calculate cascaded counter values | |
639 | * that give desired conversion timing | |
640 | */ | |
641 | i8253_cascade_ns_to_timer_2div(LABPC_TIMER_BASE, | |
642 | &(devpriv->divisor_a0), | |
643 | &(devpriv->divisor_b0), | |
644 | &convert_period, | |
645 | cmd->flags & TRIG_ROUND_MASK); | |
646 | labpc_set_ai_convert_period(cmd, mode, convert_period); | |
647 | } | |
648 | } | |
649 | ||
650 | static enum scan_mode labpc_ai_scan_mode(const struct comedi_cmd *cmd) | |
651 | { | |
652 | if (cmd->chanlist_len == 1) | |
653 | return MODE_SINGLE_CHAN; | |
654 | ||
655 | /* chanlist may be NULL during cmdtest. */ | |
656 | if (cmd->chanlist == NULL) | |
657 | return MODE_MULT_CHAN_UP; | |
658 | ||
659 | if (CR_CHAN(cmd->chanlist[0]) == CR_CHAN(cmd->chanlist[1])) | |
660 | return MODE_SINGLE_CHAN_INTERVAL; | |
661 | ||
662 | if (CR_CHAN(cmd->chanlist[0]) < CR_CHAN(cmd->chanlist[1])) | |
663 | return MODE_MULT_CHAN_UP; | |
664 | ||
665 | if (CR_CHAN(cmd->chanlist[0]) > CR_CHAN(cmd->chanlist[1])) | |
666 | return MODE_MULT_CHAN_DOWN; | |
667 | ||
668 | pr_err("ni_labpc: bug! cannot determine AI scan mode\n"); | |
669 | return 0; | |
670 | } | |
671 | ||
672 | static int labpc_ai_chanlist_invalid(const struct comedi_device *dev, | |
673 | const struct comedi_cmd *cmd, | |
674 | enum scan_mode mode) | |
675 | { | |
676 | int channel, range, aref, i; | |
677 | ||
678 | if (cmd->chanlist == NULL) | |
679 | return 0; | |
680 | ||
681 | if (mode == MODE_SINGLE_CHAN) | |
682 | return 0; | |
683 | ||
684 | if (mode == MODE_SINGLE_CHAN_INTERVAL) { | |
685 | if (cmd->chanlist_len > 0xff) { | |
686 | comedi_error(dev, | |
687 | "ni_labpc: chanlist too long for single channel interval mode\n"); | |
688 | return 1; | |
689 | } | |
690 | } | |
691 | ||
692 | channel = CR_CHAN(cmd->chanlist[0]); | |
693 | range = CR_RANGE(cmd->chanlist[0]); | |
694 | aref = CR_AREF(cmd->chanlist[0]); | |
695 | ||
696 | for (i = 0; i < cmd->chanlist_len; i++) { | |
697 | ||
698 | switch (mode) { | |
699 | case MODE_SINGLE_CHAN_INTERVAL: | |
700 | if (CR_CHAN(cmd->chanlist[i]) != channel) { | |
701 | comedi_error(dev, | |
702 | "channel scanning order specified in chanlist is not supported by hardware.\n"); | |
703 | return 1; | |
704 | } | |
705 | break; | |
706 | case MODE_MULT_CHAN_UP: | |
707 | if (CR_CHAN(cmd->chanlist[i]) != i) { | |
708 | comedi_error(dev, | |
709 | "channel scanning order specified in chanlist is not supported by hardware.\n"); | |
710 | return 1; | |
711 | } | |
712 | break; | |
713 | case MODE_MULT_CHAN_DOWN: | |
714 | if (CR_CHAN(cmd->chanlist[i]) != | |
715 | cmd->chanlist_len - i - 1) { | |
716 | comedi_error(dev, | |
717 | "channel scanning order specified in chanlist is not supported by hardware.\n"); | |
718 | return 1; | |
719 | } | |
720 | break; | |
721 | default: | |
722 | dev_err(dev->class_dev, | |
723 | "ni_labpc: bug! in chanlist check\n"); | |
724 | return 1; | |
725 | break; | |
726 | } | |
727 | ||
728 | if (CR_RANGE(cmd->chanlist[i]) != range) { | |
729 | comedi_error(dev, | |
730 | "entries in chanlist must all have the same range\n"); | |
731 | return 1; | |
732 | } | |
124b13b2 | 733 | |
af81f093 HS |
734 | if (CR_AREF(cmd->chanlist[i]) != aref) { |
735 | comedi_error(dev, | |
736 | "entries in chanlist must all have the same reference\n"); | |
737 | return 1; | |
738 | } | |
739 | } | |
124b13b2 | 740 | |
af81f093 | 741 | return 0; |
124b13b2 FMH |
742 | } |
743 | ||
0a85b6f0 MT |
744 | static int labpc_ai_cmdtest(struct comedi_device *dev, |
745 | struct comedi_subdevice *s, struct comedi_cmd *cmd) | |
124b13b2 | 746 | { |
d0baa0c1 | 747 | const struct labpc_boardinfo *board = comedi_board(dev); |
124b13b2 FMH |
748 | int err = 0; |
749 | int tmp, tmp2; | |
27020ffe | 750 | unsigned int stop_mask; |
6f73fbce | 751 | enum scan_mode mode; |
124b13b2 | 752 | |
27020ffe | 753 | /* Step 1 : check if triggers are trivially valid */ |
124b13b2 | 754 | |
27020ffe HS |
755 | err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_EXT); |
756 | err |= cfc_check_trigger_src(&cmd->scan_begin_src, | |
757 | TRIG_TIMER | TRIG_FOLLOW | TRIG_EXT); | |
758 | err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_TIMER | TRIG_EXT); | |
759 | err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT); | |
124b13b2 | 760 | |
124b13b2 | 761 | stop_mask = TRIG_COUNT | TRIG_NONE; |
d0baa0c1 | 762 | if (board->register_layout == labpc_1200_layout) |
124b13b2 | 763 | stop_mask |= TRIG_EXT; |
27020ffe | 764 | err |= cfc_check_trigger_src(&cmd->stop_src, stop_mask); |
124b13b2 FMH |
765 | |
766 | if (err) | |
767 | return 1; | |
768 | ||
27020ffe | 769 | /* Step 2a : make sure trigger sources are unique */ |
124b13b2 | 770 | |
27020ffe HS |
771 | err |= cfc_check_trigger_is_unique(cmd->start_src); |
772 | err |= cfc_check_trigger_is_unique(cmd->scan_begin_src); | |
773 | err |= cfc_check_trigger_is_unique(cmd->convert_src); | |
774 | err |= cfc_check_trigger_is_unique(cmd->stop_src); | |
775 | ||
776 | /* Step 2b : and mutually compatible */ | |
124b13b2 | 777 | |
e41a6f6d | 778 | /* can't have external stop and start triggers at once */ |
124b13b2 FMH |
779 | if (cmd->start_src == TRIG_EXT && cmd->stop_src == TRIG_EXT) |
780 | err++; | |
781 | ||
782 | if (err) | |
783 | return 2; | |
784 | ||
88c79301 | 785 | /* Step 3: check if arguments are trivially valid */ |
124b13b2 | 786 | |
88c79301 HS |
787 | if (cmd->start_arg == TRIG_NOW) |
788 | err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0); | |
124b13b2 | 789 | |
412bd046 | 790 | if (!cmd->chanlist_len) |
88c79301 HS |
791 | err |= -EINVAL; |
792 | err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len); | |
412bd046 | 793 | |
88c79301 HS |
794 | if (cmd->convert_src == TRIG_TIMER) |
795 | err |= cfc_check_trigger_arg_min(&cmd->convert_arg, | |
d0baa0c1 | 796 | board->ai_speed); |
124b13b2 | 797 | |
e41a6f6d | 798 | /* make sure scan timing is not too fast */ |
124b13b2 | 799 | if (cmd->scan_begin_src == TRIG_TIMER) { |
88c79301 HS |
800 | if (cmd->convert_src == TRIG_TIMER) |
801 | err |= cfc_check_trigger_arg_min(&cmd->scan_begin_arg, | |
802 | cmd->convert_arg * cmd->chanlist_len); | |
803 | err |= cfc_check_trigger_arg_min(&cmd->scan_begin_arg, | |
d0baa0c1 | 804 | board->ai_speed * cmd->chanlist_len); |
124b13b2 | 805 | } |
88c79301 | 806 | |
124b13b2 FMH |
807 | switch (cmd->stop_src) { |
808 | case TRIG_COUNT: | |
88c79301 | 809 | err |= cfc_check_trigger_arg_min(&cmd->stop_arg, 1); |
124b13b2 FMH |
810 | break; |
811 | case TRIG_NONE: | |
88c79301 | 812 | err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0); |
124b13b2 | 813 | break; |
1309e617 MD |
814 | /* |
815 | * TRIG_EXT doesn't care since it doesn't | |
816 | * trigger off a numbered channel | |
817 | */ | |
124b13b2 FMH |
818 | default: |
819 | break; | |
820 | } | |
821 | ||
822 | if (err) | |
823 | return 3; | |
824 | ||
825 | /* step 4: fix up any arguments */ | |
826 | ||
827 | tmp = cmd->convert_arg; | |
828 | tmp2 = cmd->scan_begin_arg; | |
6f73fbce IA |
829 | mode = labpc_ai_scan_mode(cmd); |
830 | labpc_adc_timing(dev, cmd, mode); | |
124b13b2 FMH |
831 | if (tmp != cmd->convert_arg || tmp2 != cmd->scan_begin_arg) |
832 | err++; | |
833 | ||
834 | if (err) | |
835 | return 4; | |
836 | ||
6f73fbce | 837 | if (labpc_ai_chanlist_invalid(dev, cmd, mode)) |
124b13b2 FMH |
838 | return 5; |
839 | ||
840 | return 0; | |
841 | } | |
842 | ||
da91b269 | 843 | static int labpc_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) |
124b13b2 | 844 | { |
d0baa0c1 | 845 | const struct labpc_boardinfo *board = comedi_board(dev); |
9a1a6cf8 | 846 | struct labpc_private *devpriv = dev->private; |
d163679c | 847 | struct comedi_async *async = s->async; |
ea6d0d4c | 848 | struct comedi_cmd *cmd = &async->cmd; |
8a67a67f HS |
849 | enum scan_mode mode = labpc_ai_scan_mode(cmd); |
850 | unsigned int chanspec = (mode == MODE_MULT_CHAN_UP) | |
851 | ? cmd->chanlist[cmd->chanlist_len - 1] | |
852 | : cmd->chanlist[0]; | |
853 | unsigned int chan = CR_CHAN(chanspec); | |
854 | unsigned int range = CR_RANGE(chanspec); | |
855 | unsigned int aref = CR_AREF(chanspec); | |
124b13b2 FMH |
856 | enum transfer_type xfer; |
857 | unsigned long flags; | |
8a67a67f | 858 | int ret; |
124b13b2 | 859 | |
25985edc | 860 | /* make sure board is disabled before setting up acquisition */ |
8a498667 | 861 | labpc_cancel(dev, s); |
124b13b2 | 862 | |
f6b49620 | 863 | /* initialize software conversion count */ |
412bd046 | 864 | if (cmd->stop_src == TRIG_COUNT) |
124b13b2 | 865 | devpriv->count = cmd->stop_arg * cmd->chanlist_len; |
65d6d26c | 866 | |
f6b49620 | 867 | /* setup hardware conversion counter */ |
124b13b2 | 868 | if (cmd->stop_src == TRIG_EXT) { |
1309e617 MD |
869 | /* |
870 | * load counter a1 with count of 3 | |
871 | * (pc+ manual says this is minimum allowed) using mode 0 | |
872 | */ | |
124b13b2 | 873 | ret = labpc_counter_load(dev, dev->iobase + COUNTER_A_BASE_REG, |
fbca05d6 | 874 | 1, 3, I8254_MODE0); |
463f9304 HS |
875 | } else { |
876 | /* just put counter a1 in mode 0 to set its output low */ | |
f06563f0 HS |
877 | ret = labpc_counter_set_mode(dev, |
878 | dev->iobase + COUNTER_A_BASE_REG, | |
879 | 1, I8254_MODE0); | |
880 | } | |
881 | if (ret) { | |
882 | comedi_error(dev, "error loading counter a1"); | |
883 | return ret; | |
463f9304 | 884 | } |
124b13b2 | 885 | |
3297d6c7 | 886 | #ifdef CONFIG_ISA_DMA_API |
f6b49620 BP |
887 | /* figure out what method we will use to transfer data */ |
888 | if (devpriv->dma_chan && /* need a dma channel allocated */ | |
1309e617 MD |
889 | /* |
890 | * dma unsafe at RT priority, | |
891 | * and too much setup time for TRIG_WAKE_EOS for | |
892 | */ | |
3a0a73b3 | 893 | (cmd->flags & (TRIG_WAKE_EOS | TRIG_RT)) == 0) { |
124b13b2 | 894 | xfer = isa_dma_transfer; |
1309e617 | 895 | /* pc-plus has no fifo-half full interrupt */ |
3297d6c7 RD |
896 | } else |
897 | #endif | |
d0baa0c1 | 898 | if (board->register_layout == labpc_1200_layout && |
0a85b6f0 MT |
899 | /* wake-end-of-scan should interrupt on fifo not empty */ |
900 | (cmd->flags & TRIG_WAKE_EOS) == 0 && | |
901 | /* make sure we are taking more than just a few points */ | |
902 | (cmd->stop_src != TRIG_COUNT || devpriv->count > 256)) { | |
124b13b2 FMH |
903 | xfer = fifo_half_full_transfer; |
904 | } else | |
905 | xfer = fifo_not_empty_transfer; | |
906 | devpriv->current_transfer = xfer; | |
907 | ||
8c2bc333 HS |
908 | labpc_ai_set_chan_and_gain(dev, mode, chan, range, aref); |
909 | ||
359553bb HS |
910 | labpc_setup_cmd6_reg(dev, s, mode, xfer, range, aref, |
911 | (cmd->stop_src == TRIG_EXT)); | |
912 | ||
e41a6f6d | 913 | /* manual says to set scan enable bit on second pass */ |
6f73fbce | 914 | if (mode == MODE_MULT_CHAN_UP || mode == MODE_MULT_CHAN_DOWN) { |
42cb6a82 | 915 | devpriv->cmd1 |= CMD1_SCANEN; |
e41a6f6d SR |
916 | /* need a brief delay before enabling scan, or scan |
917 | * list will get screwed when you switch | |
124b13b2 | 918 | * between scan up to scan down mode - dunno why */ |
5f74ea14 | 919 | udelay(1); |
42cb6a82 | 920 | devpriv->write_byte(devpriv->cmd1, dev->iobase + CMD1_REG); |
124b13b2 | 921 | } |
124b13b2 FMH |
922 | |
923 | devpriv->write_byte(cmd->chanlist_len, | |
0a85b6f0 | 924 | dev->iobase + INTERVAL_COUNT_REG); |
f6b49620 | 925 | /* load count */ |
42cb6a82 | 926 | devpriv->write_byte(0x1, dev->iobase + INTERVAL_STROBE_REG); |
124b13b2 | 927 | |
d5c8d9c4 HS |
928 | if (cmd->convert_src == TRIG_TIMER || |
929 | cmd->scan_begin_src == TRIG_TIMER) { | |
f6b49620 | 930 | /* set up pacing */ |
6f73fbce | 931 | labpc_adc_timing(dev, cmd, mode); |
f6b49620 | 932 | /* load counter b0 in mode 3 */ |
124b13b2 | 933 | ret = labpc_counter_load(dev, dev->iobase + COUNTER_B_BASE_REG, |
fbca05d6 | 934 | 0, devpriv->divisor_b0, I8254_MODE3); |
124b13b2 FMH |
935 | if (ret < 0) { |
936 | comedi_error(dev, "error loading counter b0"); | |
937 | return -1; | |
938 | } | |
939 | } | |
f6b49620 | 940 | /* set up conversion pacing */ |
6f73fbce | 941 | if (labpc_ai_convert_period(cmd, mode)) { |
f6b49620 | 942 | /* load counter a0 in mode 2 */ |
124b13b2 | 943 | ret = labpc_counter_load(dev, dev->iobase + COUNTER_A_BASE_REG, |
fbca05d6 | 944 | 0, devpriv->divisor_a0, I8254_MODE2); |
463f9304 HS |
945 | } else { |
946 | /* initialize pacer counter to prevent any problems */ | |
f06563f0 HS |
947 | ret = labpc_counter_set_mode(dev, |
948 | dev->iobase + COUNTER_A_BASE_REG, | |
949 | 0, I8254_MODE2); | |
950 | } | |
951 | if (ret) { | |
952 | comedi_error(dev, "error loading counter a0"); | |
953 | return ret; | |
463f9304 | 954 | } |
124b13b2 | 955 | |
f6b49620 | 956 | /* set up scan pacing */ |
6f73fbce | 957 | if (labpc_ai_scan_period(cmd, mode)) { |
f6b49620 | 958 | /* load counter b1 in mode 2 */ |
124b13b2 | 959 | ret = labpc_counter_load(dev, dev->iobase + COUNTER_B_BASE_REG, |
fbca05d6 | 960 | 1, devpriv->divisor_b1, I8254_MODE2); |
124b13b2 FMH |
961 | if (ret < 0) { |
962 | comedi_error(dev, "error loading counter b1"); | |
963 | return -1; | |
964 | } | |
965 | } | |
966 | ||
967 | labpc_clear_adc_fifo(dev); | |
968 | ||
3297d6c7 | 969 | #ifdef CONFIG_ISA_DMA_API |
f6b49620 | 970 | /* set up dma transfer */ |
124b13b2 | 971 | if (xfer == isa_dma_transfer) { |
fe7fc72a HS |
972 | unsigned long irq_flags; |
973 | ||
124b13b2 FMH |
974 | irq_flags = claim_dma_lock(); |
975 | disable_dma(devpriv->dma_chan); | |
976 | /* clear flip-flop to make sure 2-byte registers for | |
977 | * count and address get set correctly */ | |
978 | clear_dma_ff(devpriv->dma_chan); | |
979 | set_dma_addr(devpriv->dma_chan, | |
0a85b6f0 | 980 | virt_to_bus(devpriv->dma_buffer)); |
f6b49620 | 981 | /* set appropriate size of transfer */ |
62fea8c8 | 982 | devpriv->dma_transfer_size = labpc_suggest_transfer_size(cmd); |
124b13b2 | 983 | if (cmd->stop_src == TRIG_COUNT && |
0a85b6f0 | 984 | devpriv->count * sample_size < devpriv->dma_transfer_size) { |
124b13b2 | 985 | devpriv->dma_transfer_size = |
0a85b6f0 | 986 | devpriv->count * sample_size; |
124b13b2 FMH |
987 | } |
988 | set_dma_count(devpriv->dma_chan, devpriv->dma_transfer_size); | |
989 | enable_dma(devpriv->dma_chan); | |
990 | release_dma_lock(irq_flags); | |
f6b49620 | 991 | /* enable board's dma */ |
42cb6a82 | 992 | devpriv->cmd3 |= (CMD3_DMAEN | CMD3_DMATCINTEN); |
124b13b2 | 993 | } else |
42cb6a82 | 994 | devpriv->cmd3 &= ~(CMD3_DMAEN | CMD3_DMATCINTEN); |
3297d6c7 | 995 | #endif |
124b13b2 | 996 | |
f6b49620 | 997 | /* enable error interrupts */ |
42cb6a82 | 998 | devpriv->cmd3 |= CMD3_ERRINTEN; |
f6b49620 | 999 | /* enable fifo not empty interrupt? */ |
124b13b2 | 1000 | if (xfer == fifo_not_empty_transfer) |
42cb6a82 | 1001 | devpriv->cmd3 |= CMD3_FIFOINTEN; |
124b13b2 | 1002 | else |
42cb6a82 HS |
1003 | devpriv->cmd3 &= ~CMD3_FIFOINTEN; |
1004 | devpriv->write_byte(devpriv->cmd3, dev->iobase + CMD3_REG); | |
124b13b2 | 1005 | |
74df5760 HS |
1006 | /* setup any external triggering/pacing (cmd4 register) */ |
1007 | devpriv->cmd4 = 0; | |
22056e2b | 1008 | if (cmd->convert_src != TRIG_EXT) |
42cb6a82 | 1009 | devpriv->cmd4 |= CMD4_ECLKRCV; |
22056e2b IA |
1010 | /* XXX should discard first scan when using interval scanning |
1011 | * since manual says it is not synced with scan clock */ | |
63a93381 | 1012 | if (!labpc_use_continuous_mode(cmd, mode)) { |
42cb6a82 | 1013 | devpriv->cmd4 |= CMD4_INTSCAN; |
22056e2b | 1014 | if (cmd->scan_begin_src == TRIG_EXT) |
42cb6a82 | 1015 | devpriv->cmd4 |= CMD4_EOIRCV; |
22056e2b IA |
1016 | } |
1017 | /* single-ended/differential */ | |
1018 | if (aref == AREF_DIFF) | |
42cb6a82 HS |
1019 | devpriv->cmd4 |= CMD4_SEDIFF; |
1020 | devpriv->write_byte(devpriv->cmd4, dev->iobase + CMD4_REG); | |
22056e2b | 1021 | |
25985edc | 1022 | /* startup acquisition */ |
124b13b2 | 1023 | |
5f74ea14 | 1024 | spin_lock_irqsave(&dev->spinlock, flags); |
58cd9b91 HS |
1025 | |
1026 | /* use 2 cascaded counters for pacing */ | |
42cb6a82 | 1027 | devpriv->cmd2 |= CMD2_TBSEL; |
58cd9b91 HS |
1028 | |
1029 | devpriv->cmd2 &= ~(CMD2_SWTRIG | CMD2_HWTRIG | CMD2_PRETRIG); | |
1030 | if (cmd->start_src == TRIG_EXT) | |
42cb6a82 | 1031 | devpriv->cmd2 |= CMD2_HWTRIG; |
58cd9b91 | 1032 | else |
42cb6a82 | 1033 | devpriv->cmd2 |= CMD2_SWTRIG; |
58cd9b91 | 1034 | if (cmd->stop_src == TRIG_EXT) |
42cb6a82 | 1035 | devpriv->cmd2 |= (CMD2_HWTRIG | CMD2_PRETRIG); |
58cd9b91 | 1036 | |
42cb6a82 | 1037 | devpriv->write_byte(devpriv->cmd2, dev->iobase + CMD2_REG); |
58cd9b91 | 1038 | |
5f74ea14 | 1039 | spin_unlock_irqrestore(&dev->spinlock, flags); |
124b13b2 FMH |
1040 | |
1041 | return 0; | |
1042 | } | |
1043 | ||
571e06c1 HS |
1044 | #ifdef CONFIG_ISA_DMA_API |
1045 | static void labpc_drain_dma(struct comedi_device *dev) | |
1046 | { | |
1047 | struct labpc_private *devpriv = dev->private; | |
1048 | struct comedi_subdevice *s = dev->read_subdev; | |
1049 | struct comedi_async *async = s->async; | |
1050 | int status; | |
1051 | unsigned long flags; | |
1052 | unsigned int max_points, num_points, residue, leftover; | |
1053 | int i; | |
1054 | ||
74df5760 | 1055 | status = devpriv->stat1; |
571e06c1 HS |
1056 | |
1057 | flags = claim_dma_lock(); | |
1058 | disable_dma(devpriv->dma_chan); | |
1059 | /* clear flip-flop to make sure 2-byte registers for | |
1060 | * count and address get set correctly */ | |
1061 | clear_dma_ff(devpriv->dma_chan); | |
1062 | ||
1063 | /* figure out how many points to read */ | |
1064 | max_points = devpriv->dma_transfer_size / sample_size; | |
1065 | /* residue is the number of points left to be done on the dma | |
1066 | * transfer. It should always be zero at this point unless | |
1067 | * the stop_src is set to external triggering. | |
1068 | */ | |
1069 | residue = get_dma_residue(devpriv->dma_chan) / sample_size; | |
1070 | num_points = max_points - residue; | |
1071 | if (devpriv->count < num_points && async->cmd.stop_src == TRIG_COUNT) | |
1072 | num_points = devpriv->count; | |
1073 | ||
1074 | /* figure out how many points will be stored next time */ | |
1075 | leftover = 0; | |
1076 | if (async->cmd.stop_src != TRIG_COUNT) { | |
1077 | leftover = devpriv->dma_transfer_size / sample_size; | |
1078 | } else if (devpriv->count > num_points) { | |
1079 | leftover = devpriv->count - num_points; | |
1080 | if (leftover > max_points) | |
1081 | leftover = max_points; | |
1082 | } | |
1083 | ||
1084 | /* write data to comedi buffer */ | |
1085 | for (i = 0; i < num_points; i++) | |
1086 | cfc_write_to_buffer(s, devpriv->dma_buffer[i]); | |
1087 | ||
1088 | if (async->cmd.stop_src == TRIG_COUNT) | |
1089 | devpriv->count -= num_points; | |
1090 | ||
1091 | /* set address and count for next transfer */ | |
1092 | set_dma_addr(devpriv->dma_chan, virt_to_bus(devpriv->dma_buffer)); | |
1093 | set_dma_count(devpriv->dma_chan, leftover * sample_size); | |
1094 | release_dma_lock(flags); | |
1095 | ||
1096 | async->events |= COMEDI_CB_BLOCK; | |
1097 | } | |
1098 | ||
1099 | static void handle_isa_dma(struct comedi_device *dev) | |
1100 | { | |
1101 | struct labpc_private *devpriv = dev->private; | |
1102 | ||
1103 | labpc_drain_dma(dev); | |
1104 | ||
1105 | enable_dma(devpriv->dma_chan); | |
1106 | ||
1107 | /* clear dma tc interrupt */ | |
1108 | devpriv->write_byte(0x1, dev->iobase + DMATC_CLEAR_REG); | |
1109 | } | |
1110 | #endif | |
1111 | ||
1112 | /* read all available samples from ai fifo */ | |
1113 | static int labpc_drain_fifo(struct comedi_device *dev) | |
1114 | { | |
1115 | struct labpc_private *devpriv = dev->private; | |
571e06c1 HS |
1116 | short data; |
1117 | struct comedi_async *async = dev->read_subdev->async; | |
1118 | const int timeout = 10000; | |
1119 | unsigned int i; | |
1120 | ||
42cb6a82 | 1121 | devpriv->stat1 = devpriv->read_byte(dev->iobase + STAT1_REG); |
571e06c1 | 1122 | |
42cb6a82 | 1123 | for (i = 0; (devpriv->stat1 & STAT1_DAVAIL) && i < timeout; |
571e06c1 HS |
1124 | i++) { |
1125 | /* quit if we have all the data we want */ | |
1126 | if (async->cmd.stop_src == TRIG_COUNT) { | |
1127 | if (devpriv->count == 0) | |
1128 | break; | |
1129 | devpriv->count--; | |
1130 | } | |
3c4dfac8 | 1131 | data = labpc_read_adc_fifo(dev); |
571e06c1 | 1132 | cfc_write_to_buffer(dev->read_subdev, data); |
42cb6a82 | 1133 | devpriv->stat1 = devpriv->read_byte(dev->iobase + STAT1_REG); |
571e06c1 HS |
1134 | } |
1135 | if (i == timeout) { | |
1136 | comedi_error(dev, "ai timeout, fifo never empties"); | |
1137 | async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA; | |
1138 | return -1; | |
1139 | } | |
1140 | ||
1141 | return 0; | |
1142 | } | |
1143 | ||
1144 | /* makes sure all data acquired by board is transferred to comedi (used | |
1145 | * when acquisition is terminated by stop_src == TRIG_EXT). */ | |
1146 | static void labpc_drain_dregs(struct comedi_device *dev) | |
1147 | { | |
1148 | #ifdef CONFIG_ISA_DMA_API | |
1149 | struct labpc_private *devpriv = dev->private; | |
1150 | ||
1151 | if (devpriv->current_transfer == isa_dma_transfer) | |
1152 | labpc_drain_dma(dev); | |
1153 | #endif | |
1154 | ||
1155 | labpc_drain_fifo(dev); | |
1156 | } | |
1157 | ||
1158 | /* interrupt service routine */ | |
1159 | static irqreturn_t labpc_interrupt(int irq, void *d) | |
1160 | { | |
1161 | struct comedi_device *dev = d; | |
d0baa0c1 | 1162 | const struct labpc_boardinfo *board = comedi_board(dev); |
571e06c1 HS |
1163 | struct labpc_private *devpriv = dev->private; |
1164 | struct comedi_subdevice *s = dev->read_subdev; | |
1165 | struct comedi_async *async; | |
1166 | struct comedi_cmd *cmd; | |
1167 | ||
1168 | if (!dev->attached) { | |
1169 | comedi_error(dev, "premature interrupt"); | |
1170 | return IRQ_HANDLED; | |
1171 | } | |
1172 | ||
1173 | async = s->async; | |
1174 | cmd = &async->cmd; | |
1175 | async->events = 0; | |
1176 | ||
1177 | /* read board status */ | |
42cb6a82 | 1178 | devpriv->stat1 = devpriv->read_byte(dev->iobase + STAT1_REG); |
d0baa0c1 | 1179 | if (board->register_layout == labpc_1200_layout) |
42cb6a82 | 1180 | devpriv->stat2 = devpriv->read_byte(dev->iobase + STAT2_REG); |
571e06c1 | 1181 | |
42cb6a82 HS |
1182 | if ((devpriv->stat1 & (STAT1_GATA0 | STAT1_CNTINT | STAT1_OVERFLOW | |
1183 | STAT1_OVERRUN | STAT1_DAVAIL)) == 0 | |
1184 | && (devpriv->stat2 & STAT2_OUTA1) == 0 | |
1185 | && (devpriv->stat2 & STAT2_FIFONHF)) { | |
571e06c1 HS |
1186 | return IRQ_NONE; |
1187 | } | |
1188 | ||
42cb6a82 | 1189 | if (devpriv->stat1 & STAT1_OVERRUN) { |
571e06c1 | 1190 | /* clear error interrupt */ |
42cb6a82 | 1191 | devpriv->write_byte(0x1, dev->iobase + ADC_FIFO_CLEAR_REG); |
571e06c1 HS |
1192 | async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA; |
1193 | comedi_event(dev, s); | |
1194 | comedi_error(dev, "overrun"); | |
1195 | return IRQ_HANDLED; | |
1196 | } | |
1197 | ||
1198 | #ifdef CONFIG_ISA_DMA_API | |
1199 | if (devpriv->current_transfer == isa_dma_transfer) { | |
1200 | /* | |
1201 | * if a dma terminal count of external stop trigger | |
1202 | * has occurred | |
1203 | */ | |
42cb6a82 | 1204 | if (devpriv->stat1 & STAT1_GATA0 || |
d0baa0c1 | 1205 | (board->register_layout == labpc_1200_layout |
42cb6a82 | 1206 | && devpriv->stat2 & STAT2_OUTA1)) { |
571e06c1 HS |
1207 | handle_isa_dma(dev); |
1208 | } | |
1209 | } else | |
1210 | #endif | |
1211 | labpc_drain_fifo(dev); | |
1212 | ||
42cb6a82 | 1213 | if (devpriv->stat1 & STAT1_CNTINT) { |
571e06c1 HS |
1214 | comedi_error(dev, "handled timer interrupt?"); |
1215 | /* clear it */ | |
1216 | devpriv->write_byte(0x1, dev->iobase + TIMER_CLEAR_REG); | |
1217 | } | |
1218 | ||
42cb6a82 | 1219 | if (devpriv->stat1 & STAT1_OVERFLOW) { |
571e06c1 | 1220 | /* clear error interrupt */ |
42cb6a82 | 1221 | devpriv->write_byte(0x1, dev->iobase + ADC_FIFO_CLEAR_REG); |
571e06c1 HS |
1222 | async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA; |
1223 | comedi_event(dev, s); | |
1224 | comedi_error(dev, "overflow"); | |
1225 | return IRQ_HANDLED; | |
1226 | } | |
1227 | /* handle external stop trigger */ | |
1228 | if (cmd->stop_src == TRIG_EXT) { | |
42cb6a82 | 1229 | if (devpriv->stat2 & STAT2_OUTA1) { |
571e06c1 HS |
1230 | labpc_drain_dregs(dev); |
1231 | labpc_cancel(dev, s); | |
1232 | async->events |= COMEDI_CB_EOA; | |
1233 | } | |
1234 | } | |
1235 | ||
1236 | /* TRIG_COUNT end of acquisition */ | |
1237 | if (cmd->stop_src == TRIG_COUNT) { | |
1238 | if (devpriv->count == 0) { | |
1239 | labpc_cancel(dev, s); | |
1240 | async->events |= COMEDI_CB_EOA; | |
1241 | } | |
1242 | } | |
1243 | ||
1244 | comedi_event(dev, s); | |
1245 | return IRQ_HANDLED; | |
1246 | } | |
1247 | ||
28a10930 HS |
1248 | static int labpc_ao_insn_write(struct comedi_device *dev, |
1249 | struct comedi_subdevice *s, | |
1250 | struct comedi_insn *insn, | |
1251 | unsigned int *data) | |
8913491d | 1252 | { |
d0baa0c1 | 1253 | const struct labpc_boardinfo *board = comedi_board(dev); |
8913491d HS |
1254 | struct labpc_private *devpriv = dev->private; |
1255 | int channel, range; | |
1256 | unsigned long flags; | |
1257 | int lsb, msb; | |
1258 | ||
1259 | channel = CR_CHAN(insn->chanspec); | |
1260 | ||
1261 | /* turn off pacing of analog output channel */ | |
1262 | /* note: hardware bug in daqcard-1200 means pacing cannot | |
1263 | * be independently enabled/disabled for its the two channels */ | |
1264 | spin_lock_irqsave(&dev->spinlock, flags); | |
42cb6a82 HS |
1265 | devpriv->cmd2 &= ~CMD2_LDAC(channel); |
1266 | devpriv->write_byte(devpriv->cmd2, dev->iobase + CMD2_REG); | |
8913491d HS |
1267 | spin_unlock_irqrestore(&dev->spinlock, flags); |
1268 | ||
1269 | /* set range */ | |
d0baa0c1 | 1270 | if (board->register_layout == labpc_1200_layout) { |
8913491d | 1271 | range = CR_RANGE(insn->chanspec); |
43a9411a | 1272 | if (labpc_range_is_unipolar(s, range)) |
42cb6a82 | 1273 | devpriv->cmd6 |= CMD6_DACUNI(channel); |
8913491d | 1274 | else |
42cb6a82 | 1275 | devpriv->cmd6 &= ~CMD6_DACUNI(channel); |
8913491d | 1276 | /* write to register */ |
42cb6a82 | 1277 | devpriv->write_byte(devpriv->cmd6, dev->iobase + CMD6_REG); |
8913491d HS |
1278 | } |
1279 | /* send data */ | |
1280 | lsb = data[0] & 0xff; | |
1281 | msb = (data[0] >> 8) & 0xff; | |
1282 | devpriv->write_byte(lsb, dev->iobase + DAC_LSB_REG(channel)); | |
1283 | devpriv->write_byte(msb, dev->iobase + DAC_MSB_REG(channel)); | |
1284 | ||
1285 | /* remember value for readback */ | |
1286 | devpriv->ao_value[channel] = data[0]; | |
1287 | ||
1288 | return 1; | |
1289 | } | |
1290 | ||
28a10930 HS |
1291 | static int labpc_ao_insn_read(struct comedi_device *dev, |
1292 | struct comedi_subdevice *s, | |
1293 | struct comedi_insn *insn, | |
1294 | unsigned int *data) | |
8913491d HS |
1295 | { |
1296 | struct labpc_private *devpriv = dev->private; | |
1297 | ||
1298 | data[0] = devpriv->ao_value[CR_CHAN(insn->chanspec)]; | |
1299 | ||
1300 | return 1; | |
1301 | } | |
1302 | ||
370c8e1f | 1303 | static int labpc_8255_mmio(int dir, int port, int data, unsigned long iobase) |
124b13b2 FMH |
1304 | { |
1305 | if (dir) { | |
5743aaac | 1306 | writeb(data, (void __iomem *)(iobase + port)); |
124b13b2 FMH |
1307 | return 0; |
1308 | } else { | |
5743aaac | 1309 | return readb((void __iomem *)(iobase + port)); |
124b13b2 FMH |
1310 | } |
1311 | } | |
1312 | ||
f6b49620 | 1313 | /* lowlevel write to eeprom/dac */ |
da91b269 | 1314 | static void labpc_serial_out(struct comedi_device *dev, unsigned int value, |
0a85b6f0 | 1315 | unsigned int value_width) |
124b13b2 | 1316 | { |
9a1a6cf8 | 1317 | struct labpc_private *devpriv = dev->private; |
124b13b2 FMH |
1318 | int i; |
1319 | ||
1320 | for (i = 1; i <= value_width; i++) { | |
f6b49620 | 1321 | /* clear serial clock */ |
42cb6a82 | 1322 | devpriv->cmd5 &= ~CMD5_SCLK; |
f6b49620 | 1323 | /* send bits most significant bit first */ |
124b13b2 | 1324 | if (value & (1 << (value_width - i))) |
42cb6a82 | 1325 | devpriv->cmd5 |= CMD5_SDATA; |
124b13b2 | 1326 | else |
42cb6a82 | 1327 | devpriv->cmd5 &= ~CMD5_SDATA; |
5f74ea14 | 1328 | udelay(1); |
42cb6a82 | 1329 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
f6b49620 | 1330 | /* set clock to load bit */ |
42cb6a82 | 1331 | devpriv->cmd5 |= CMD5_SCLK; |
5f74ea14 | 1332 | udelay(1); |
42cb6a82 | 1333 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
124b13b2 FMH |
1334 | } |
1335 | } | |
1336 | ||
f6b49620 | 1337 | /* lowlevel read from eeprom */ |
da91b269 | 1338 | static unsigned int labpc_serial_in(struct comedi_device *dev) |
124b13b2 | 1339 | { |
9a1a6cf8 | 1340 | struct labpc_private *devpriv = dev->private; |
124b13b2 FMH |
1341 | unsigned int value = 0; |
1342 | int i; | |
f6b49620 | 1343 | const int value_width = 8; /* number of bits wide values are */ |
124b13b2 FMH |
1344 | |
1345 | for (i = 1; i <= value_width; i++) { | |
f6b49620 | 1346 | /* set serial clock */ |
42cb6a82 | 1347 | devpriv->cmd5 |= CMD5_SCLK; |
5f74ea14 | 1348 | udelay(1); |
42cb6a82 | 1349 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
f6b49620 | 1350 | /* clear clock bit */ |
42cb6a82 | 1351 | devpriv->cmd5 &= ~CMD5_SCLK; |
5f74ea14 | 1352 | udelay(1); |
42cb6a82 | 1353 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
f6b49620 | 1354 | /* read bits most significant bit first */ |
5f74ea14 | 1355 | udelay(1); |
42cb6a82 HS |
1356 | devpriv->stat2 = devpriv->read_byte(dev->iobase + STAT2_REG); |
1357 | if (devpriv->stat2 & STAT2_PROMOUT) | |
124b13b2 | 1358 | value |= 1 << (value_width - i); |
124b13b2 FMH |
1359 | } |
1360 | ||
1361 | return value; | |
1362 | } | |
1363 | ||
0a85b6f0 MT |
1364 | static unsigned int labpc_eeprom_read(struct comedi_device *dev, |
1365 | unsigned int address) | |
124b13b2 | 1366 | { |
9a1a6cf8 | 1367 | struct labpc_private *devpriv = dev->private; |
124b13b2 | 1368 | unsigned int value; |
e41a6f6d SR |
1369 | /* bits to tell eeprom to expect a read */ |
1370 | const int read_instruction = 0x3; | |
1371 | /* 8 bit write lengths to eeprom */ | |
1372 | const int write_length = 8; | |
124b13b2 | 1373 | |
f6b49620 | 1374 | /* enable read/write to eeprom */ |
42cb6a82 | 1375 | devpriv->cmd5 &= ~CMD5_EEPROMCS; |
5f74ea14 | 1376 | udelay(1); |
42cb6a82 HS |
1377 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
1378 | devpriv->cmd5 |= (CMD5_EEPROMCS | CMD5_WRTPRT); | |
5f74ea14 | 1379 | udelay(1); |
42cb6a82 | 1380 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
124b13b2 | 1381 | |
f6b49620 | 1382 | /* send read instruction */ |
124b13b2 | 1383 | labpc_serial_out(dev, read_instruction, write_length); |
f6b49620 | 1384 | /* send 8 bit address to read from */ |
124b13b2 | 1385 | labpc_serial_out(dev, address, write_length); |
f6b49620 | 1386 | /* read result */ |
124b13b2 FMH |
1387 | value = labpc_serial_in(dev); |
1388 | ||
f6b49620 | 1389 | /* disable read/write to eeprom */ |
42cb6a82 | 1390 | devpriv->cmd5 &= ~(CMD5_EEPROMCS | CMD5_WRTPRT); |
5f74ea14 | 1391 | udelay(1); |
42cb6a82 | 1392 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
124b13b2 FMH |
1393 | |
1394 | return value; | |
1395 | } | |
1396 | ||
bc3fc446 HS |
1397 | static unsigned int labpc_eeprom_read_status(struct comedi_device *dev) |
1398 | { | |
1399 | struct labpc_private *devpriv = dev->private; | |
1400 | unsigned int value; | |
1401 | const int read_status_instruction = 0x5; | |
1402 | const int write_length = 8; /* 8 bit write lengths to eeprom */ | |
1403 | ||
1404 | /* enable read/write to eeprom */ | |
42cb6a82 | 1405 | devpriv->cmd5 &= ~CMD5_EEPROMCS; |
bc3fc446 | 1406 | udelay(1); |
42cb6a82 HS |
1407 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
1408 | devpriv->cmd5 |= (CMD5_EEPROMCS | CMD5_WRTPRT); | |
bc3fc446 | 1409 | udelay(1); |
42cb6a82 | 1410 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
bc3fc446 HS |
1411 | |
1412 | /* send read status instruction */ | |
1413 | labpc_serial_out(dev, read_status_instruction, write_length); | |
1414 | /* read result */ | |
1415 | value = labpc_serial_in(dev); | |
1416 | ||
1417 | /* disable read/write to eeprom */ | |
42cb6a82 | 1418 | devpriv->cmd5 &= ~(CMD5_EEPROMCS | CMD5_WRTPRT); |
bc3fc446 | 1419 | udelay(1); |
42cb6a82 | 1420 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
bc3fc446 HS |
1421 | |
1422 | return value; | |
1423 | } | |
1424 | ||
d6269644 JL |
1425 | static int labpc_eeprom_write(struct comedi_device *dev, |
1426 | unsigned int address, unsigned int value) | |
124b13b2 | 1427 | { |
9a1a6cf8 | 1428 | struct labpc_private *devpriv = dev->private; |
124b13b2 FMH |
1429 | const int write_enable_instruction = 0x6; |
1430 | const int write_instruction = 0x2; | |
f6b49620 | 1431 | const int write_length = 8; /* 8 bit write lengths to eeprom */ |
124b13b2 FMH |
1432 | const int write_in_progress_bit = 0x1; |
1433 | const int timeout = 10000; | |
1434 | int i; | |
1435 | ||
f6b49620 | 1436 | /* make sure there isn't already a write in progress */ |
124b13b2 FMH |
1437 | for (i = 0; i < timeout; i++) { |
1438 | if ((labpc_eeprom_read_status(dev) & write_in_progress_bit) == | |
0a85b6f0 | 1439 | 0) |
124b13b2 FMH |
1440 | break; |
1441 | } | |
1442 | if (i == timeout) { | |
1443 | comedi_error(dev, "eeprom write timed out"); | |
1444 | return -ETIME; | |
1445 | } | |
f6b49620 | 1446 | /* update software copy of eeprom */ |
124b13b2 FMH |
1447 | devpriv->eeprom_data[address] = value; |
1448 | ||
f6b49620 | 1449 | /* enable read/write to eeprom */ |
42cb6a82 | 1450 | devpriv->cmd5 &= ~CMD5_EEPROMCS; |
5f74ea14 | 1451 | udelay(1); |
42cb6a82 HS |
1452 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
1453 | devpriv->cmd5 |= (CMD5_EEPROMCS | CMD5_WRTPRT); | |
5f74ea14 | 1454 | udelay(1); |
42cb6a82 | 1455 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
124b13b2 | 1456 | |
f6b49620 | 1457 | /* send write_enable instruction */ |
124b13b2 | 1458 | labpc_serial_out(dev, write_enable_instruction, write_length); |
42cb6a82 | 1459 | devpriv->cmd5 &= ~CMD5_EEPROMCS; |
5f74ea14 | 1460 | udelay(1); |
42cb6a82 | 1461 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
124b13b2 | 1462 | |
f6b49620 | 1463 | /* send write instruction */ |
42cb6a82 | 1464 | devpriv->cmd5 |= CMD5_EEPROMCS; |
5f74ea14 | 1465 | udelay(1); |
42cb6a82 | 1466 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
124b13b2 | 1467 | labpc_serial_out(dev, write_instruction, write_length); |
f6b49620 | 1468 | /* send 8 bit address to write to */ |
124b13b2 | 1469 | labpc_serial_out(dev, address, write_length); |
f6b49620 | 1470 | /* write value */ |
124b13b2 | 1471 | labpc_serial_out(dev, value, write_length); |
42cb6a82 | 1472 | devpriv->cmd5 &= ~CMD5_EEPROMCS; |
5f74ea14 | 1473 | udelay(1); |
42cb6a82 | 1474 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
124b13b2 | 1475 | |
f6b49620 | 1476 | /* disable read/write to eeprom */ |
42cb6a82 | 1477 | devpriv->cmd5 &= ~(CMD5_EEPROMCS | CMD5_WRTPRT); |
5f74ea14 | 1478 | udelay(1); |
42cb6a82 | 1479 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
124b13b2 FMH |
1480 | |
1481 | return 0; | |
1482 | } | |
1483 | ||
f6b49620 | 1484 | /* writes to 8 bit calibration dacs */ |
da91b269 | 1485 | static void write_caldac(struct comedi_device *dev, unsigned int channel, |
0a85b6f0 | 1486 | unsigned int value) |
124b13b2 | 1487 | { |
9a1a6cf8 HS |
1488 | struct labpc_private *devpriv = dev->private; |
1489 | ||
124b13b2 FMH |
1490 | if (value == devpriv->caldac[channel]) |
1491 | return; | |
1492 | devpriv->caldac[channel] = value; | |
1493 | ||
f6b49620 | 1494 | /* clear caldac load bit and make sure we don't write to eeprom */ |
42cb6a82 | 1495 | devpriv->cmd5 &= ~(CMD5_CALDACLD | CMD5_EEPROMCS | CMD5_WRTPRT); |
5f74ea14 | 1496 | udelay(1); |
42cb6a82 | 1497 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
124b13b2 | 1498 | |
f6b49620 | 1499 | /* write 4 bit channel */ |
124b13b2 | 1500 | labpc_serial_out(dev, channel, 4); |
f6b49620 | 1501 | /* write 8 bit caldac value */ |
124b13b2 FMH |
1502 | labpc_serial_out(dev, value, 8); |
1503 | ||
f6b49620 | 1504 | /* set and clear caldac bit to load caldac value */ |
42cb6a82 | 1505 | devpriv->cmd5 |= CMD5_CALDACLD; |
5f74ea14 | 1506 | udelay(1); |
42cb6a82 HS |
1507 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
1508 | devpriv->cmd5 &= ~CMD5_CALDACLD; | |
5f74ea14 | 1509 | udelay(1); |
42cb6a82 | 1510 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
124b13b2 FMH |
1511 | } |
1512 | ||
28a10930 | 1513 | static int labpc_calib_insn_write(struct comedi_device *dev, |
bc3fc446 | 1514 | struct comedi_subdevice *s, |
28a10930 HS |
1515 | struct comedi_insn *insn, |
1516 | unsigned int *data) | |
bc3fc446 | 1517 | { |
7c00782b | 1518 | unsigned int chan = CR_CHAN(insn->chanspec); |
bc3fc446 | 1519 | |
7c00782b HS |
1520 | /* |
1521 | * Only write the last data value to the caldac. Preceding | |
1522 | * data would be overwritten anyway. | |
1523 | */ | |
1524 | if (insn->n > 0) | |
1525 | write_caldac(dev, chan, data[insn->n - 1]); | |
1526 | ||
1527 | return insn->n; | |
bc3fc446 HS |
1528 | } |
1529 | ||
28a10930 | 1530 | static int labpc_calib_insn_read(struct comedi_device *dev, |
bc3fc446 | 1531 | struct comedi_subdevice *s, |
28a10930 HS |
1532 | struct comedi_insn *insn, |
1533 | unsigned int *data) | |
bc3fc446 HS |
1534 | { |
1535 | struct labpc_private *devpriv = dev->private; | |
198ac9dc HS |
1536 | unsigned int chan = CR_CHAN(insn->chanspec); |
1537 | int i; | |
bc3fc446 | 1538 | |
198ac9dc HS |
1539 | for (i = 0; i < insn->n; i++) |
1540 | data[i] = devpriv->caldac[chan]; | |
bc3fc446 | 1541 | |
198ac9dc | 1542 | return insn->n; |
bc3fc446 HS |
1543 | } |
1544 | ||
28a10930 | 1545 | static int labpc_eeprom_insn_write(struct comedi_device *dev, |
bc3fc446 | 1546 | struct comedi_subdevice *s, |
28a10930 HS |
1547 | struct comedi_insn *insn, |
1548 | unsigned int *data) | |
bc3fc446 | 1549 | { |
e7a1aa62 | 1550 | unsigned int chan = CR_CHAN(insn->chanspec); |
bc3fc446 HS |
1551 | int ret; |
1552 | ||
e7a1aa62 HS |
1553 | /* only allow writes to user area of eeprom */ |
1554 | if (chan < 16 || chan > 127) | |
bc3fc446 | 1555 | return -EINVAL; |
bc3fc446 | 1556 | |
e7a1aa62 HS |
1557 | /* |
1558 | * Only write the last data value to the eeprom. Preceding | |
1559 | * data would be overwritten anyway. | |
1560 | */ | |
1561 | if (insn->n > 0) { | |
1562 | ret = labpc_eeprom_write(dev, chan, data[insn->n - 1]); | |
1563 | if (ret) | |
1564 | return ret; | |
1565 | } | |
bc3fc446 | 1566 | |
e7a1aa62 | 1567 | return insn->n; |
bc3fc446 HS |
1568 | } |
1569 | ||
28a10930 | 1570 | static int labpc_eeprom_insn_read(struct comedi_device *dev, |
bc3fc446 | 1571 | struct comedi_subdevice *s, |
28a10930 HS |
1572 | struct comedi_insn *insn, |
1573 | unsigned int *data) | |
bc3fc446 HS |
1574 | { |
1575 | struct labpc_private *devpriv = dev->private; | |
1330af4c HS |
1576 | unsigned int chan = CR_CHAN(insn->chanspec); |
1577 | int i; | |
bc3fc446 | 1578 | |
1330af4c HS |
1579 | for (i = 0; i < insn->n; i++) |
1580 | data[i] = devpriv->eeprom_data[chan]; | |
bc3fc446 | 1581 | |
1330af4c | 1582 | return insn->n; |
bc3fc446 HS |
1583 | } |
1584 | ||
de024b3d | 1585 | int labpc_common_attach(struct comedi_device *dev, |
3e034797 | 1586 | unsigned int irq, unsigned long isr_flags) |
dd2aef64 | 1587 | { |
d0baa0c1 | 1588 | const struct labpc_boardinfo *board = comedi_board(dev); |
dd2aef64 HS |
1589 | struct labpc_private *devpriv = dev->private; |
1590 | struct comedi_subdevice *s; | |
dd2aef64 | 1591 | int ret; |
cacedd0c | 1592 | int i; |
dd2aef64 | 1593 | |
4d3cc8ab | 1594 | if (board->has_mmio) { |
dd2aef64 HS |
1595 | devpriv->read_byte = labpc_readb; |
1596 | devpriv->write_byte = labpc_writeb; | |
1597 | } else { | |
1598 | devpriv->read_byte = labpc_inb; | |
1599 | devpriv->write_byte = labpc_outb; | |
1600 | } | |
83d75eff | 1601 | |
dd2aef64 | 1602 | /* initialize board's command registers */ |
42cb6a82 HS |
1603 | devpriv->write_byte(devpriv->cmd1, dev->iobase + CMD1_REG); |
1604 | devpriv->write_byte(devpriv->cmd2, dev->iobase + CMD2_REG); | |
1605 | devpriv->write_byte(devpriv->cmd3, dev->iobase + CMD3_REG); | |
1606 | devpriv->write_byte(devpriv->cmd4, dev->iobase + CMD4_REG); | |
d0baa0c1 | 1607 | if (board->register_layout == labpc_1200_layout) { |
42cb6a82 HS |
1608 | devpriv->write_byte(devpriv->cmd5, dev->iobase + CMD5_REG); |
1609 | devpriv->write_byte(devpriv->cmd6, dev->iobase + CMD6_REG); | |
dd2aef64 HS |
1610 | } |
1611 | ||
dd2aef64 | 1612 | if (irq) { |
0229979a HS |
1613 | ret = request_irq(irq, labpc_interrupt, isr_flags, |
1614 | dev->board_name, dev); | |
1615 | if (ret == 0) | |
1616 | dev->irq = irq; | |
dd2aef64 | 1617 | } |
dd2aef64 | 1618 | |
dd2aef64 HS |
1619 | ret = comedi_alloc_subdevices(dev, 5); |
1620 | if (ret) | |
1621 | return ret; | |
1622 | ||
1623 | /* analog input subdevice */ | |
1624 | s = &dev->subdevices[0]; | |
9bffb75d HS |
1625 | s->type = COMEDI_SUBD_AI; |
1626 | s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_COMMON | SDF_DIFF; | |
1627 | s->n_chan = 8; | |
1628 | s->len_chanlist = 8; | |
1629 | s->maxdata = 0x0fff; | |
1630 | s->range_table = board->ai_range_table; | |
1631 | s->insn_read = labpc_ai_insn_read; | |
1632 | if (dev->irq) { | |
1633 | dev->read_subdev = s; | |
1634 | s->subdev_flags |= SDF_CMD_READ; | |
1635 | s->do_cmd = labpc_ai_cmd; | |
1636 | s->do_cmdtest = labpc_ai_cmdtest; | |
1637 | s->cancel = labpc_cancel; | |
1638 | } | |
dd2aef64 HS |
1639 | |
1640 | /* analog output */ | |
1641 | s = &dev->subdevices[1]; | |
d0baa0c1 | 1642 | if (board->has_ao) { |
7d47f0f4 HS |
1643 | s->type = COMEDI_SUBD_AO; |
1644 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_GROUND; | |
1645 | s->n_chan = NUM_AO_CHAN; | |
1646 | s->maxdata = 0x0fff; | |
1647 | s->range_table = &range_labpc_ao; | |
1648 | s->insn_read = labpc_ao_insn_read; | |
1649 | s->insn_write = labpc_ao_insn_write; | |
1650 | ||
dd2aef64 HS |
1651 | /* initialize analog outputs to a known value */ |
1652 | for (i = 0; i < s->n_chan; i++) { | |
7d47f0f4 HS |
1653 | short lsb, msb; |
1654 | ||
dd2aef64 HS |
1655 | devpriv->ao_value[i] = s->maxdata / 2; |
1656 | lsb = devpriv->ao_value[i] & 0xff; | |
1657 | msb = (devpriv->ao_value[i] >> 8) & 0xff; | |
1658 | devpriv->write_byte(lsb, dev->iobase + DAC_LSB_REG(i)); | |
1659 | devpriv->write_byte(msb, dev->iobase + DAC_MSB_REG(i)); | |
1660 | } | |
1661 | } else { | |
7d47f0f4 | 1662 | s->type = COMEDI_SUBD_UNUSED; |
dd2aef64 HS |
1663 | } |
1664 | ||
1665 | /* 8255 dio */ | |
1666 | s = &dev->subdevices[2]; | |
370c8e1f HS |
1667 | ret = subdev_8255_init(dev, s, |
1668 | (board->has_mmio) ? labpc_8255_mmio : NULL, | |
1669 | dev->iobase + DIO_BASE_REG); | |
1670 | if (ret) | |
1671 | return ret; | |
dd2aef64 HS |
1672 | |
1673 | /* calibration subdevices for boards that have one */ | |
1674 | s = &dev->subdevices[3]; | |
d0baa0c1 | 1675 | if (board->register_layout == labpc_1200_layout) { |
7d47f0f4 HS |
1676 | s->type = COMEDI_SUBD_CALIB; |
1677 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL; | |
1678 | s->n_chan = 16; | |
1679 | s->maxdata = 0xff; | |
1680 | s->insn_read = labpc_calib_insn_read; | |
1681 | s->insn_write = labpc_calib_insn_write; | |
dd2aef64 HS |
1682 | |
1683 | for (i = 0; i < s->n_chan; i++) | |
1684 | write_caldac(dev, i, s->maxdata / 2); | |
1685 | } else | |
7d47f0f4 | 1686 | s->type = COMEDI_SUBD_UNUSED; |
dd2aef64 HS |
1687 | |
1688 | /* EEPROM */ | |
1689 | s = &dev->subdevices[4]; | |
d0baa0c1 | 1690 | if (board->register_layout == labpc_1200_layout) { |
7d47f0f4 HS |
1691 | s->type = COMEDI_SUBD_MEMORY; |
1692 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL; | |
1693 | s->n_chan = EEPROM_SIZE; | |
1694 | s->maxdata = 0xff; | |
1695 | s->insn_read = labpc_eeprom_insn_read; | |
1696 | s->insn_write = labpc_eeprom_insn_write; | |
1697 | ||
1698 | for (i = 0; i < s->n_chan; i++) | |
dd2aef64 HS |
1699 | devpriv->eeprom_data[i] = labpc_eeprom_read(dev, i); |
1700 | } else | |
7d47f0f4 | 1701 | s->type = COMEDI_SUBD_UNUSED; |
dd2aef64 HS |
1702 | |
1703 | return 0; | |
1704 | } | |
1705 | EXPORT_SYMBOL_GPL(labpc_common_attach); | |
1706 | ||
fa3cb219 HS |
1707 | void labpc_common_detach(struct comedi_device *dev) |
1708 | { | |
1709 | comedi_spriv_free(dev, 2); | |
1710 | } | |
1711 | EXPORT_SYMBOL_GPL(labpc_common_detach); | |
1712 | ||
1713 | #ifdef CONFIG_COMEDI_NI_LABPC_ISA | |
dd2aef64 HS |
1714 | static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it) |
1715 | { | |
d0baa0c1 | 1716 | const struct labpc_boardinfo *board = comedi_board(dev); |
dd2aef64 | 1717 | struct labpc_private *devpriv; |
fa3cb219 HS |
1718 | unsigned int irq = it->options[1]; |
1719 | unsigned int dma_chan = it->options[2]; | |
5b365a8a | 1720 | int ret; |
dd2aef64 HS |
1721 | |
1722 | devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL); | |
1723 | if (!devpriv) | |
1724 | return -ENOMEM; | |
1725 | dev->private = devpriv; | |
1726 | ||
fa3cb219 | 1727 | ret = comedi_request_region(dev, it->options[0], LABPC_SIZE); |
dd2aef64 HS |
1728 | if (ret) |
1729 | return ret; | |
1730 | ||
3e034797 | 1731 | ret = labpc_common_attach(dev, irq, 0); |
76730884 HS |
1732 | if (ret) |
1733 | return ret; | |
1734 | ||
1735 | #ifdef CONFIG_ISA_DMA_API | |
1736 | if (dev->irq && (dma_chan == 1 || dma_chan == 3)) { | |
1737 | devpriv->dma_buffer = kmalloc(dma_buffer_size, | |
1738 | GFP_KERNEL | GFP_DMA); | |
1739 | if (devpriv->dma_buffer) { | |
1740 | ret = request_dma(dma_chan, dev->board_name); | |
1741 | if (ret == 0) { | |
1742 | unsigned long dma_flags; | |
1743 | ||
1744 | devpriv->dma_chan = dma_chan; | |
1745 | dma_flags = claim_dma_lock(); | |
1746 | disable_dma(devpriv->dma_chan); | |
1747 | set_dma_mode(devpriv->dma_chan, DMA_MODE_READ); | |
1748 | release_dma_lock(dma_flags); | |
1749 | } else { | |
1750 | kfree(devpriv->dma_buffer); | |
1751 | } | |
1752 | } | |
1753 | } | |
1754 | #endif | |
1755 | ||
1756 | return 0; | |
dd2aef64 HS |
1757 | } |
1758 | ||
fa3cb219 | 1759 | void labpc_detach(struct comedi_device *dev) |
dd2aef64 | 1760 | { |
dd2aef64 | 1761 | struct labpc_private *devpriv = dev->private; |
dd2aef64 | 1762 | |
fa3cb219 HS |
1763 | labpc_common_detach(dev); |
1764 | ||
1765 | if (devpriv) { | |
1766 | kfree(devpriv->dma_buffer); | |
1767 | if (devpriv->dma_chan) | |
1768 | free_dma(devpriv->dma_chan); | |
3d1fe3f7 | 1769 | } |
fa3cb219 | 1770 | comedi_legacy_detach(dev); |
dd2aef64 | 1771 | } |
dd2aef64 | 1772 | |
5e51f0db | 1773 | static struct comedi_driver labpc_driver = { |
147a85d7 | 1774 | .driver_name = "ni_labpc", |
6e8bddf2 HS |
1775 | .module = THIS_MODULE, |
1776 | .attach = labpc_attach, | |
fa3cb219 | 1777 | .detach = labpc_detach, |
6e8bddf2 HS |
1778 | .num_names = ARRAY_SIZE(labpc_boards), |
1779 | .board_name = &labpc_boards[0].name, | |
1780 | .offset = sizeof(struct labpc_boardinfo), | |
5e51f0db | 1781 | }; |
fa3cb219 HS |
1782 | module_comedi_driver(labpc_driver); |
1783 | #else | |
1784 | static int __init labpc_common_init(void) | |
727b286b | 1785 | { |
fa3cb219 | 1786 | return 0; |
727b286b | 1787 | } |
fa3cb219 | 1788 | module_init(labpc_common_init); |
727b286b | 1789 | |
fa3cb219 HS |
1790 | static void __exit labpc_common_exit(void) |
1791 | { | |
1792 | } | |
1793 | module_exit(labpc_common_exit); | |
124b13b2 FMH |
1794 | #endif |
1795 | ||
90f703d3 AT |
1796 | MODULE_AUTHOR("Comedi http://www.comedi.org"); |
1797 | MODULE_DESCRIPTION("Comedi low-level driver"); | |
1798 | MODULE_LICENSE("GPL"); |