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Staging: comedi: remove assignment in conditionals
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / staging / comedi / drivers / adv_pci_dio.c
blobafa2a4d3816d4d756ee607e29350203faceac8e7
1 /*
2 * comedi/drivers/adv_pci_dio.c
3 *
4 * Author: Michal Dobes <dobes@tesnet.cz>
5 *
6 * Hardware driver for Advantech PCI DIO cards.
7 */
8 /*
9 Driver: adv_pci_dio
10 Description: Advantech PCI-1730, PCI-1733, PCI-1734, PCI-1736UP,
11 PCI-1750, PCI-1751, PCI-1752, PCI-1753/E, PCI-1754,
12 PCI-1756, PCI-1762
13 Author: Michal Dobes <dobes@tesnet.cz>
14 Devices: [Advantech] PCI-1730 (adv_pci_dio), PCI-1733,
15 PCI-1734, PCI-1736UP, PCI-1750,
16 PCI-1751, PCI-1752, PCI-1753,
17 PCI-1753+PCI-1753E, PCI-1754, PCI-1756,
18 PCI-1760, PCI-1762
19 Status: untested
20 Updated: Mon, 14 Apr 2008 10:43:08 +0100
21
22 This driver supports now only insn interface for DI/DO/DIO.
23
24 Configuration options:
25 [0] - PCI bus of device (optional)
26 [1] - PCI slot of device (optional)
27 If bus/slot is not specified, the first available PCI
28 device will be used.
29
30 */
31
32 #include "../comedidev.h"
33
34 #include <linux/delay.h>
35
36 #include "comedi_pci.h"
37 #include "8255.h"
38
39 #undef PCI_DIO_EXTDEBUG /* if defined, enable extensive debug logging */
40
41 #undef DPRINTK
42 #ifdef PCI_DIO_EXTDEBUG
43 #define DPRINTK(fmt, args...) rt_printk(fmt, ## args)
44 #else
45 #define DPRINTK(fmt, args...)
46 #endif
47
48 /* hardware types of the cards */
49 enum hw_cards_id {
50 TYPE_PCI1730, TYPE_PCI1733, TYPE_PCI1734, TYPE_PCI1736,
51 TYPE_PCI1750,
52 TYPE_PCI1751,
53 TYPE_PCI1752,
54 TYPE_PCI1753, TYPE_PCI1753E,
55 TYPE_PCI1754, TYPE_PCI1756,
56 TYPE_PCI1760,
57 TYPE_PCI1762
58 };
59
60 /* which I/O instructions to use */
61 enum hw_io_access {
62 IO_8b, IO_16b
63 };
64
65 #define MAX_DI_SUBDEVS 2 /* max number of DI subdevices per card */
66 #define MAX_DO_SUBDEVS 2 /* max number of DO subdevices per card */
67 #define MAX_DIO_SUBDEVG 2 /* max number of DIO subdevices group per card */
68
69 #define SIZE_8255 4 /* 8255 IO space length */
70
71 #define PCIDIO_MAINREG 2 /* main I/O region for all Advantech cards? */
72
73 /* Register offset definitions */
74 /* Advantech PCI-1730/3/4 */
75 #define PCI1730_IDI 0 /* R: Isolated digital input 0-15 */
76 #define PCI1730_IDO 0 /* W: Isolated digital output 0-15 */
77 #define PCI1730_DI 2 /* R: Digital input 0-15 */
78 #define PCI1730_DO 2 /* W: Digital output 0-15 */
79 #define PCI1733_IDI 0 /* R: Isolated digital input 0-31 */
80 #define PCI1730_3_INT_EN 0x08 /* R/W: enable/disable interrupts */
81 #define PCI1730_3_INT_RF 0x0c /* R/W: set falling/raising edge for interrupts */
82 #define PCI1730_3_INT_CLR 0x10 /* R/W: clear interrupts */
83 #define PCI1734_IDO 0 /* W: Isolated digital output 0-31 */
84 #define PCI173x_BOARDID 4 /* R: Board I/D switch for 1730/3/4 */
85
86 /* Advantech PCI-1736UP */
87 #define PCI1736_IDI 0 /* R: Isolated digital input 0-15 */
88 #define PCI1736_IDO 0 /* W: Isolated digital output 0-15 */
89 #define PCI1736_3_INT_EN 0x08 /* R/W: enable/disable interrupts */
90 #define PCI1736_3_INT_RF 0x0c /* R/W: set falling/raising edge for interrupts */
91 #define PCI1736_3_INT_CLR 0x10 /* R/W: clear interrupts */
92 #define PCI1736_BOARDID 4 /* R: Board I/D switch for 1736UP */
93 #define PCI1736_MAINREG 0 /* Normal register (2) doesn't work */
94
95 /* Advantech PCI-1750 */
96 #define PCI1750_IDI 0 /* R: Isolated digital input 0-15 */
97 #define PCI1750_IDO 0 /* W: Isolated digital output 0-15 */
98 #define PCI1750_ICR 32 /* W: Interrupt control register */
99 #define PCI1750_ISR 32 /* R: Interrupt status register */
100
101 /* Advantech PCI-1751/3/3E */
102 #define PCI1751_DIO 0 /* R/W: begin of 8255 registers block */
103 #define PCI1751_ICR 32 /* W: Interrupt control register */
104 #define PCI1751_ISR 32 /* R: Interrupt status register */
105 #define PCI1753_DIO 0 /* R/W: begin of 8255 registers block */
106 #define PCI1753_ICR0 16 /* R/W: Interrupt control register group 0 */
107 #define PCI1753_ICR1 17 /* R/W: Interrupt control register group 1 */
108 #define PCI1753_ICR2 18 /* R/W: Interrupt control register group 2 */
109 #define PCI1753_ICR3 19 /* R/W: Interrupt control register group 3 */
110 #define PCI1753E_DIO 32 /* R/W: begin of 8255 registers block */
111 #define PCI1753E_ICR0 48 /* R/W: Interrupt control register group 0 */
112 #define PCI1753E_ICR1 49 /* R/W: Interrupt control register group 1 */
113 #define PCI1753E_ICR2 50 /* R/W: Interrupt control register group 2 */
114 #define PCI1753E_ICR3 51 /* R/W: Interrupt control register group 3 */
115
116 /* Advantech PCI-1752/4/6 */
117 #define PCI1752_IDO 0 /* R/W: Digital output 0-31 */
118 #define PCI1752_IDO2 4 /* R/W: Digital output 32-63 */
119 #define PCI1754_IDI 0 /* R: Digital input 0-31 */
120 #define PCI1754_IDI2 4 /* R: Digital input 32-64 */
121 #define PCI1756_IDI 0 /* R: Digital input 0-31 */
122 #define PCI1756_IDO 4 /* R/W: Digital output 0-31 */
123 #define PCI1754_6_ICR0 0x08 /* R/W: Interrupt control register group 0 */
124 #define PCI1754_6_ICR1 0x0a /* R/W: Interrupt control register group 1 */
125 #define PCI1754_ICR2 0x0c /* R/W: Interrupt control register group 2 */
126 #define PCI1754_ICR3 0x0e /* R/W: Interrupt control register group 3 */
127 #define PCI1752_6_CFC 0x12 /* R/W: set/read channel freeze function */
128 #define PCI175x_BOARDID 0x10 /* R: Board I/D switch for 1752/4/6 */
129
130 /* Advantech PCI-1762 registers */
131 #define PCI1762_RO 0 /* R/W: Relays status/output */
132 #define PCI1762_IDI 2 /* R: Isolated input status */
133 #define PCI1762_BOARDID 4 /* R: Board I/D switch */
134 #define PCI1762_ICR 6 /* W: Interrupt control register */
135 #define PCI1762_ISR 6 /* R: Interrupt status register */
136
137 /* Advantech PCI-1760 registers */
138 #define OMB0 0x0c /* W: Mailbox outgoing registers */
139 #define OMB1 0x0d
140 #define OMB2 0x0e
141 #define OMB3 0x0f
142 #define IMB0 0x1c /* R: Mailbox incoming registers */
143 #define IMB1 0x1d
144 #define IMB2 0x1e
145 #define IMB3 0x1f
146 #define INTCSR0 0x38 /* R/W: Interrupt control registers */
147 #define INTCSR1 0x39
148 #define INTCSR2 0x3a
149 #define INTCSR3 0x3b
150
151 /* PCI-1760 mailbox commands */
152 #define CMD_ClearIMB2 0x00 /* Clear IMB2 status and return actaul DI status in IMB3 */
153 #define CMD_SetRelaysOutput 0x01 /* Set relay output from OMB0 */
154 #define CMD_GetRelaysStatus 0x02 /* Get relay status to IMB0 */
155 #define CMD_ReadCurrentStatus 0x07 /* Read the current status of the register in OMB0, result in IMB0 */
156 #define CMD_ReadFirmwareVersion 0x0e /* Read the firmware ver., result in IMB1.IMB0 */
157 #define CMD_ReadHardwareVersion 0x0f /* Read the hardware ver., result in IMB1.IMB0 */
158 #define CMD_EnableIDIFilters 0x20 /* Enable IDI filters based on bits in OMB0 */
159 #define CMD_EnableIDIPatternMatch 0x21 /* Enable IDI pattern match based on bits in OMB0 */
160 #define CMD_SetIDIPatternMatch 0x22 /* Enable IDI pattern match based on bits in OMB0 */
161 #define CMD_EnableIDICounters 0x28 /* Enable IDI counters based on bits in OMB0 */
162 #define CMD_ResetIDICounters 0x29 /* Reset IDI counters based on bits in OMB0 to its reset values */
163 #define CMD_OverflowIDICounters 0x2a /* Enable IDI counters overflow interrupts based on bits in OMB0 */
164 #define CMD_MatchIntIDICounters 0x2b /* Enable IDI counters match value interrupts based on bits in OMB0 */
165 #define CMD_EdgeIDICounters 0x2c /* Set IDI up counters count edge (bit=0 - rising, =1 - falling) */
166 #define CMD_GetIDICntCurValue 0x2f /* Read IDI{OMB0} up counter current value */
167 #define CMD_SetIDI0CntResetValue 0x40 /* Set IDI0 Counter Reset Value 256*OMB1+OMB0 */
168 #define CMD_SetIDI1CntResetValue 0x41 /* Set IDI1 Counter Reset Value 256*OMB1+OMB0 */
169 #define CMD_SetIDI2CntResetValue 0x42 /* Set IDI2 Counter Reset Value 256*OMB1+OMB0 */
170 #define CMD_SetIDI3CntResetValue 0x43 /* Set IDI3 Counter Reset Value 256*OMB1+OMB0 */
171 #define CMD_SetIDI4CntResetValue 0x44 /* Set IDI4 Counter Reset Value 256*OMB1+OMB0 */
172 #define CMD_SetIDI5CntResetValue 0x45 /* Set IDI5 Counter Reset Value 256*OMB1+OMB0 */
173 #define CMD_SetIDI6CntResetValue 0x46 /* Set IDI6 Counter Reset Value 256*OMB1+OMB0 */
174 #define CMD_SetIDI7CntResetValue 0x47 /* Set IDI7 Counter Reset Value 256*OMB1+OMB0 */
175 #define CMD_SetIDI0CntMatchValue 0x48 /* Set IDI0 Counter Match Value 256*OMB1+OMB0 */
176 #define CMD_SetIDI1CntMatchValue 0x49 /* Set IDI1 Counter Match Value 256*OMB1+OMB0 */
177 #define CMD_SetIDI2CntMatchValue 0x4a /* Set IDI2 Counter Match Value 256*OMB1+OMB0 */
178 #define CMD_SetIDI3CntMatchValue 0x4b /* Set IDI3 Counter Match Value 256*OMB1+OMB0 */
179 #define CMD_SetIDI4CntMatchValue 0x4c /* Set IDI4 Counter Match Value 256*OMB1+OMB0 */
180 #define CMD_SetIDI5CntMatchValue 0x4d /* Set IDI5 Counter Match Value 256*OMB1+OMB0 */
181 #define CMD_SetIDI6CntMatchValue 0x4e /* Set IDI6 Counter Match Value 256*OMB1+OMB0 */
182 #define CMD_SetIDI7CntMatchValue 0x4f /* Set IDI7 Counter Match Value 256*OMB1+OMB0 */
183
184 #define OMBCMD_RETRY 0x03 /* 3 times try request before error */
185
186 static int pci_dio_attach(struct comedi_device *dev, struct comedi_devconfig *it);
187 static int pci_dio_detach(struct comedi_device *dev);
188
189 struct diosubd_data {
190 int chans; /* num of chans */
191 int addr; /* PCI address ofset */
192 int regs; /* number of registers to read or 8255 subdevices */
193 unsigned int specflags; /* addon subdevice flags */
194 };
195
196 struct dio_boardtype {
197 const char *name; /* board name */
198 int vendor_id; /* vendor/device PCI ID */
199 int device_id;
200 int main_pci_region; /* main I/O PCI region */
201 enum hw_cards_id cardtype;
202 struct diosubd_data sdi[MAX_DI_SUBDEVS]; /* DI chans */
203 struct diosubd_data sdo[MAX_DO_SUBDEVS]; /* DO chans */
204 struct diosubd_data sdio[MAX_DIO_SUBDEVG]; /* DIO 8255 chans */
205 struct diosubd_data boardid; /* card supports board ID switch */
206 enum hw_io_access io_access;
207 };
208
209 static DEFINE_PCI_DEVICE_TABLE(pci_dio_pci_table) = {
210 {PCI_VENDOR_ID_ADVANTECH, 0x1730, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
211 {PCI_VENDOR_ID_ADVANTECH, 0x1733, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
212 {PCI_VENDOR_ID_ADVANTECH, 0x1734, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
213 {PCI_VENDOR_ID_ADVANTECH, 0x1736, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
214 {PCI_VENDOR_ID_ADVANTECH, 0x1750, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
215 {PCI_VENDOR_ID_ADVANTECH, 0x1751, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
216 {PCI_VENDOR_ID_ADVANTECH, 0x1752, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
217 {PCI_VENDOR_ID_ADVANTECH, 0x1753, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
218 {PCI_VENDOR_ID_ADVANTECH, 0x1754, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
219 {PCI_VENDOR_ID_ADVANTECH, 0x1756, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
220 {PCI_VENDOR_ID_ADVANTECH, 0x1760, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
221 {PCI_VENDOR_ID_ADVANTECH, 0x1762, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
222 {0}
223 };
224
225 MODULE_DEVICE_TABLE(pci, pci_dio_pci_table);
226
227 static const struct dio_boardtype boardtypes[] = {
228 {"pci1730", PCI_VENDOR_ID_ADVANTECH, 0x1730, PCIDIO_MAINREG,
229 TYPE_PCI1730,
230 {{16, PCI1730_DI, 2, 0}, {16, PCI1730_IDI, 2, 0}},
231 {{16, PCI1730_DO, 2, 0}, {16, PCI1730_IDO, 2, 0}},
232 {{0, 0, 0, 0}, {0, 0, 0, 0}},
233 {4, PCI173x_BOARDID, 1, SDF_INTERNAL},
234 IO_8b,
235 },
236 {"pci1733", PCI_VENDOR_ID_ADVANTECH, 0x1733, PCIDIO_MAINREG,
237 TYPE_PCI1733,
238 {{0, 0, 0, 0}, {32, PCI1733_IDI, 4, 0}},
239 {{0, 0, 0, 0}, {0, 0, 0, 0}},
240 {{0, 0, 0, 0}, {0, 0, 0, 0}},
241 {4, PCI173x_BOARDID, 1, SDF_INTERNAL},
242 IO_8b},
243 {"pci1734", PCI_VENDOR_ID_ADVANTECH, 0x1734, PCIDIO_MAINREG,
244 TYPE_PCI1734,
245 {{0, 0, 0, 0}, {0, 0, 0, 0}},
246 {{0, 0, 0, 0}, {32, PCI1734_IDO, 4, 0}},
247 {{0, 0, 0, 0}, {0, 0, 0, 0}},
248 {4, PCI173x_BOARDID, 1, SDF_INTERNAL},
249 IO_8b},
250 {"pci1736", PCI_VENDOR_ID_ADVANTECH, 0x1736, PCI1736_MAINREG,
251 TYPE_PCI1736,
252 {{0, 0, 0, 0}, {16, PCI1736_IDI, 2, 0}},
253 {{0, 0, 0, 0}, {16, PCI1736_IDO, 2, 0}},
254 {{ 0, 0, 0, 0}, { 0, 0, 0, 0}},
255 { 4, PCI1736_BOARDID, 1, SDF_INTERNAL},
256 IO_8b,
257 },
258 {"pci1750", PCI_VENDOR_ID_ADVANTECH, 0x1750, PCIDIO_MAINREG,
259 TYPE_PCI1750,
260 {{0, 0, 0, 0}, {16, PCI1750_IDI, 2, 0}},
261 {{0, 0, 0, 0}, {16, PCI1750_IDO, 2, 0}},
262 {{0, 0, 0, 0}, {0, 0, 0, 0}},
263 {0, 0, 0, 0},
264 IO_8b},
265 {"pci1751", PCI_VENDOR_ID_ADVANTECH, 0x1751, PCIDIO_MAINREG,
266 TYPE_PCI1751,
267 {{0, 0, 0, 0}, {0, 0, 0, 0}},
268 {{0, 0, 0, 0}, {0, 0, 0, 0}},
269 {{48, PCI1751_DIO, 2, 0}, {0, 0, 0, 0}},
270 {0, 0, 0, 0},
271 IO_8b},
272 {"pci1752", PCI_VENDOR_ID_ADVANTECH, 0x1752, PCIDIO_MAINREG,
273 TYPE_PCI1752,
274 {{0, 0, 0, 0}, {0, 0, 0, 0}},
275 {{32, PCI1752_IDO, 2, 0}, {32, PCI1752_IDO2, 2, 0}},
276 {{0, 0, 0, 0}, {0, 0, 0, 0}},
277 {4, PCI175x_BOARDID, 1, SDF_INTERNAL},
278 IO_16b},
279 {"pci1753", PCI_VENDOR_ID_ADVANTECH, 0x1753, PCIDIO_MAINREG,
280 TYPE_PCI1753,
281 {{0, 0, 0, 0}, {0, 0, 0, 0}},
282 {{0, 0, 0, 0}, {0, 0, 0, 0}},
283 {{96, PCI1753_DIO, 4, 0}, {0, 0, 0, 0}},
284 {0, 0, 0, 0},
285 IO_8b},
286 {"pci1753e", PCI_VENDOR_ID_ADVANTECH, 0x1753, PCIDIO_MAINREG,
287 TYPE_PCI1753E,
288 {{0, 0, 0, 0}, {0, 0, 0, 0}},
289 {{0, 0, 0, 0}, {0, 0, 0, 0}},
290 {{96, PCI1753_DIO, 4, 0}, {96, PCI1753E_DIO, 4, 0}},
291 {0, 0, 0, 0},
292 IO_8b},
293 {"pci1754", PCI_VENDOR_ID_ADVANTECH, 0x1754, PCIDIO_MAINREG,
294 TYPE_PCI1754,
295 {{32, PCI1754_IDI, 2, 0}, {32, PCI1754_IDI2, 2, 0}},
296 {{0, 0, 0, 0}, {0, 0, 0, 0}},
297 {{0, 0, 0, 0}, {0, 0, 0, 0}},
298 {4, PCI175x_BOARDID, 1, SDF_INTERNAL},
299 IO_16b},
300 {"pci1756", PCI_VENDOR_ID_ADVANTECH, 0x1756, PCIDIO_MAINREG,
301 TYPE_PCI1756,
302 {{0, 0, 0, 0}, {32, PCI1756_IDI, 2, 0}},
303 {{0, 0, 0, 0}, {32, PCI1756_IDO, 2, 0}},
304 {{0, 0, 0, 0}, {0, 0, 0, 0}},
305 {4, PCI175x_BOARDID, 1, SDF_INTERNAL},
306 IO_16b},
307 {"pci1760", PCI_VENDOR_ID_ADVANTECH, 0x1760, 0,
308 TYPE_PCI1760,
309 {{0, 0, 0, 0}, {0, 0, 0, 0}}, /* This card have own setup work */
310 {{0, 0, 0, 0}, {0, 0, 0, 0}},
311 {{0, 0, 0, 0}, {0, 0, 0, 0}},
312 {0, 0, 0, 0},
313 IO_8b},
314 {"pci1762", PCI_VENDOR_ID_ADVANTECH, 0x1762, PCIDIO_MAINREG,
315 TYPE_PCI1762,
316 {{0, 0, 0, 0}, {16, PCI1762_IDI, 1, 0}},
317 {{0, 0, 0, 0}, {16, PCI1762_RO, 1, 0}},
318 {{0, 0, 0, 0}, {0, 0, 0, 0}},
319 {4, PCI1762_BOARDID, 1, SDF_INTERNAL},
320 IO_16b}
321 };
322
323 #define n_boardtypes (sizeof(boardtypes)/sizeof(struct dio_boardtype))
324
325 static struct comedi_driver driver_pci_dio = {
326 driver_name:"adv_pci_dio",
327 module:THIS_MODULE,
328 attach:pci_dio_attach,
329 detach:pci_dio_detach
330 };
331
332 struct pci_dio_private {
333 struct pci_dio_private *prev; /* previous private struct */
334 struct pci_dio_private *next; /* next private struct */
335 struct pci_dev *pcidev; /* pointer to board's pci_dev */
336 char valid; /* card is usable */
337 char GlobalIrqEnabled; /* 1= any IRQ source is enabled */
338 /* PCI-1760 specific data */
339 unsigned char IDICntEnable; /* counter's counting enable status */
340 unsigned char IDICntOverEnable; /* counter's overflow interrupts enable status */
341 unsigned char IDICntMatchEnable; /* counter's match interrupts enable status */
342 unsigned char IDICntEdge; /* counter's count edge value (bit=0 - rising, =1 - falling) */
343 unsigned short CntResValue[8]; /* counters' reset value */
344 unsigned short CntMatchValue[8]; /* counters' match interrupt value */
345 unsigned char IDIFiltersEn; /* IDI's digital filters enable status */
346 unsigned char IDIPatMatchEn; /* IDI's pattern match enable status */
347 unsigned char IDIPatMatchValue; /* IDI's pattern match value */
348 unsigned short IDIFiltrLow[8]; /* IDI's filter value low signal */
349 unsigned short IDIFiltrHigh[8]; /* IDI's filter value high signal */
350 };
351
352 static struct pci_dio_private *pci_priv = NULL; /* list of allocated cards */
353
354 #define devpriv ((struct pci_dio_private *)dev->private)
355 #define this_board ((const struct dio_boardtype *)dev->board_ptr)
356
357 /*
358 ==============================================================================
359 */
360 static int pci_dio_insn_bits_di_b(struct comedi_device *dev, struct comedi_subdevice *s,
361 struct comedi_insn *insn, unsigned int *data)
362 {
363 const struct diosubd_data *d = (const struct diosubd_data *)s->private;
364 int i;
365
366 data[1] = 0;
367 for (i = 0; i < d->regs; i++) {
368 data[1] |= inb(dev->iobase + d->addr + i) << (8 * i);
369 }
370
371 return 2;
372 }
373
374 /*
375 ==============================================================================
376 */
377 static int pci_dio_insn_bits_di_w(struct comedi_device *dev, struct comedi_subdevice *s,
378 struct comedi_insn *insn, unsigned int *data)
379 {
380 const struct diosubd_data *d = (const struct diosubd_data *)s->private;
381 int i;
382
383 data[1] = 0;
384 for (i = 0; i < d->regs; i++)
385 data[1] |= inw(dev->iobase + d->addr + 2 * i) << (16 * i);
386
387 return 2;
388 }
389
390 /*
391 ==============================================================================
392 */
393 static int pci_dio_insn_bits_do_b(struct comedi_device *dev, struct comedi_subdevice *s,
394 struct comedi_insn *insn, unsigned int *data)
395 {
396 const struct diosubd_data *d = (const struct diosubd_data *)s->private;
397 int i;
398
399 if (data[0]) {
400 s->state &= ~data[0];
401 s->state |= (data[0] & data[1]);
402 for (i = 0; i < d->regs; i++)
403 outb((s->state >> (8 * i)) & 0xff,
404 dev->iobase + d->addr + i);
405 }
406 data[1] = s->state;
407
408 return 2;
409 }
410
411 /*
412 ==============================================================================
413 */
414 static int pci_dio_insn_bits_do_w(struct comedi_device *dev, struct comedi_subdevice *s,
415 struct comedi_insn *insn, unsigned int *data)
416 {
417 const struct diosubd_data *d = (const struct diosubd_data *)s->private;
418 int i;
419
420 if (data[0]) {
421 s->state &= ~data[0];
422 s->state |= (data[0] & data[1]);
423 for (i = 0; i < d->regs; i++)
424 outw((s->state >> (16 * i)) & 0xffff,
425 dev->iobase + d->addr + 2 * i);
426 }
427 data[1] = s->state;
428
429 return 2;
430 }
431
432 /*
433 ==============================================================================
434 */
435 static int pci1760_unchecked_mbxrequest(struct comedi_device *dev,
436 unsigned char *omb, unsigned char *imb, int repeats)
437 {
438 int cnt, tout, ok = 0;
439
440 for (cnt = 0; cnt < repeats; cnt++) {
441 outb(omb[0], dev->iobase + OMB0);
442 outb(omb[1], dev->iobase + OMB1);
443 outb(omb[2], dev->iobase + OMB2);
444 outb(omb[3], dev->iobase + OMB3);
445 for (tout = 0; tout < 251; tout++) {
446 imb[2] = inb(dev->iobase + IMB2);
447 if (imb[2] == omb[2]) {
448 imb[0] = inb(dev->iobase + IMB0);
449 imb[1] = inb(dev->iobase + IMB1);
450 imb[3] = inb(dev->iobase + IMB3);
451 ok = 1;
452 break;
453 }
454 comedi_udelay(1);
455 }
456 if (ok)
457 return 0;
458 }
459
460 comedi_error(dev, "PCI-1760 mailbox request timeout!");
461 return -ETIME;
462 }
463
464 static int pci1760_clear_imb2(struct comedi_device *dev)
465 {
466 unsigned char omb[4] = { 0x0, 0x0, CMD_ClearIMB2, 0x0 };
467 unsigned char imb[4];
468 /* check if imb2 is already clear */
469 if (inb(dev->iobase + IMB2) == CMD_ClearIMB2)
470 return 0;
471 return pci1760_unchecked_mbxrequest(dev, omb, imb, OMBCMD_RETRY);
472 }
473
474 static int pci1760_mbxrequest(struct comedi_device *dev,
475 unsigned char *omb, unsigned char *imb)
476 {
477 if (omb[2] == CMD_ClearIMB2) {
478 comedi_error(dev,
479 "bug! this function should not be used for CMD_ClearIMB2 command");
480 return -EINVAL;
481 }
482 if (inb(dev->iobase + IMB2) == omb[2]) {
483 int retval;
484 retval = pci1760_clear_imb2(dev);
485 if (retval < 0)
486 return retval;
487 }
488 return pci1760_unchecked_mbxrequest(dev, omb, imb, OMBCMD_RETRY);
489 }
490
491 /*
492 ==============================================================================
493 */
494 static int pci1760_insn_bits_di(struct comedi_device *dev, struct comedi_subdevice *s,
495 struct comedi_insn *insn, unsigned int *data)
496 {
497 data[1] = inb(dev->iobase + IMB3);
498
499 return 2;
500 }
501
502 /*
503 ==============================================================================
504 */
505 static int pci1760_insn_bits_do(struct comedi_device *dev, struct comedi_subdevice *s,
506 struct comedi_insn *insn, unsigned int *data)
507 {
508 int ret;
509 unsigned char omb[4] = {
510 0x00,
511 0x00,
512 CMD_SetRelaysOutput,
513 0x00
514 };
515 unsigned char imb[4];
516
517 if (data[0]) {
518 s->state &= ~data[0];
519 s->state |= (data[0] & data[1]);
520 omb[0] = s->state;
521 ret = pci1760_mbxrequest(dev, omb, imb);
522 if (!ret)
523 return ret;
524 }
525 data[1] = s->state;
526
527 return 2;
528 }
529
530 /*
531 ==============================================================================
532 */
533 static int pci1760_insn_cnt_read(struct comedi_device *dev, struct comedi_subdevice *s,
534 struct comedi_insn *insn, unsigned int *data)
535 {
536 int ret, n;
537 unsigned char omb[4] = {
538 CR_CHAN(insn->chanspec) & 0x07,
539 0x00,
540 CMD_GetIDICntCurValue,
541 0x00
542 };
543 unsigned char imb[4];
544
545 for (n = 0; n < insn->n; n++) {
546 ret = pci1760_mbxrequest(dev, omb, imb);
547 if (!ret)
548 return ret;
549 data[n] = (imb[1] << 8) + imb[0];
550 }
551
552 return n;
553 }
554
555 /*
556 ==============================================================================
557 */
558 static int pci1760_insn_cnt_write(struct comedi_device *dev, struct comedi_subdevice *s,
559 struct comedi_insn *insn, unsigned int *data)
560 {
561 int ret;
562 unsigned char chan = CR_CHAN(insn->chanspec) & 0x07;
563 unsigned char bitmask = 1 << chan;
564 unsigned char omb[4] = {
565 data[0] & 0xff,
566 (data[0] >> 8) & 0xff,
567 CMD_SetIDI0CntResetValue + chan,
568 0x00
569 };
570 unsigned char imb[4];
571
572 if (devpriv->CntResValue[chan] != (data[0] & 0xffff)) { /* Set reset value if different */
573 ret = pci1760_mbxrequest(dev, omb, imb);
574 if (!ret)
575 return ret;
576 devpriv->CntResValue[chan] = data[0] & 0xffff;
577 }
578
579 omb[0] = bitmask; /* reset counter to it reset value */
580 omb[2] = CMD_ResetIDICounters;
581 ret = pci1760_mbxrequest(dev, omb, imb);
582 if (!ret)
583 return ret;
584
585 if (!(bitmask & devpriv->IDICntEnable)) { /* start counter if it don't run */
586 omb[0] = bitmask;
587 omb[2] = CMD_EnableIDICounters;
588 ret = pci1760_mbxrequest(dev, omb, imb);
589 if (!ret)
590 return ret;
591 devpriv->IDICntEnable |= bitmask;
592 }
593 return 1;
594 }
595
596 /*
597 ==============================================================================
598 */
599 static int pci1760_reset(struct comedi_device *dev)
600 {
601 int i;
602 unsigned char omb[4] = { 0x00, 0x00, 0x00, 0x00 };
603 unsigned char imb[4];
604
605 outb(0, dev->iobase + INTCSR0); /* disable IRQ */
606 outb(0, dev->iobase + INTCSR1);
607 outb(0, dev->iobase + INTCSR2);
608 outb(0, dev->iobase + INTCSR3);
609 devpriv->GlobalIrqEnabled = 0;
610
611 omb[0] = 0x00;
612 omb[2] = CMD_SetRelaysOutput; /* reset relay outputs */
613 pci1760_mbxrequest(dev, omb, imb);
614
615 omb[0] = 0x00;
616 omb[2] = CMD_EnableIDICounters; /* disable IDI up counters */
617 pci1760_mbxrequest(dev, omb, imb);
618 devpriv->IDICntEnable = 0;
619
620 omb[0] = 0x00;
621 omb[2] = CMD_OverflowIDICounters; /* disable counters overflow interrupts */
622 pci1760_mbxrequest(dev, omb, imb);
623 devpriv->IDICntOverEnable = 0;
624
625 omb[0] = 0x00;
626 omb[2] = CMD_MatchIntIDICounters; /* disable counters match value interrupts */
627 pci1760_mbxrequest(dev, omb, imb);
628 devpriv->IDICntMatchEnable = 0;
629
630 omb[0] = 0x00;
631 omb[1] = 0x80;
632 for (i = 0; i < 8; i++) { /* set IDI up counters match value */
633 omb[2] = CMD_SetIDI0CntMatchValue + i;
634 pci1760_mbxrequest(dev, omb, imb);
635 devpriv->CntMatchValue[i] = 0x8000;
636 }
637
638 omb[0] = 0x00;
639 omb[1] = 0x00;
640 for (i = 0; i < 8; i++) { /* set IDI up counters reset value */
641 omb[2] = CMD_SetIDI0CntResetValue + i;
642 pci1760_mbxrequest(dev, omb, imb);
643 devpriv->CntResValue[i] = 0x0000;
644 }
645
646 omb[0] = 0xff;
647 omb[2] = CMD_ResetIDICounters; /* reset IDI up counters to reset values */
648 pci1760_mbxrequest(dev, omb, imb);
649
650 omb[0] = 0x00;
651 omb[2] = CMD_EdgeIDICounters; /* set IDI up counters count edge */
652 pci1760_mbxrequest(dev, omb, imb);
653 devpriv->IDICntEdge = 0x00;
654
655 omb[0] = 0x00;
656 omb[2] = CMD_EnableIDIFilters; /* disable all digital in filters */
657 pci1760_mbxrequest(dev, omb, imb);
658 devpriv->IDIFiltersEn = 0x00;
659
660 omb[0] = 0x00;
661 omb[2] = CMD_EnableIDIPatternMatch; /* disable pattern matching */
662 pci1760_mbxrequest(dev, omb, imb);
663 devpriv->IDIPatMatchEn = 0x00;
664
665 omb[0] = 0x00;
666 omb[2] = CMD_SetIDIPatternMatch; /* set pattern match value */
667 pci1760_mbxrequest(dev, omb, imb);
668 devpriv->IDIPatMatchValue = 0x00;
669
670 return 0;
671 }
672
673 /*
674 ==============================================================================
675 */
676 static int pci_dio_reset(struct comedi_device *dev)
677 {
678 DPRINTK("adv_pci_dio EDBG: BGN: pci171x_reset(...)\n");
679
680 switch (this_board->cardtype) {
681 case TYPE_PCI1730:
682 outb(0, dev->iobase + PCI1730_DO); /* clear outputs */
683 outb(0, dev->iobase + PCI1730_DO + 1);
684 outb(0, dev->iobase + PCI1730_IDO);
685 outb(0, dev->iobase + PCI1730_IDO + 1);
686 /* NO break there! */
687 case TYPE_PCI1733:
688 outb(0, dev->iobase + PCI1730_3_INT_EN); /* disable interrupts */
689 outb(0x0f, dev->iobase + PCI1730_3_INT_CLR); /* clear interrupts */
690 outb(0, dev->iobase + PCI1730_3_INT_RF); /* set rising edge trigger */
691 break;
692 case TYPE_PCI1734:
693 outb(0, dev->iobase + PCI1734_IDO); /* clear outputs */
694 outb(0, dev->iobase + PCI1734_IDO + 1);
695 outb(0, dev->iobase + PCI1734_IDO + 2);
696 outb(0, dev->iobase + PCI1734_IDO + 3);
697 break;
698
699 case TYPE_PCI1736:
700 outb(0, dev->iobase+PCI1736_IDO);
701 outb(0, dev->iobase+PCI1736_IDO+1);
702 outb(0, dev->iobase+PCI1736_3_INT_EN); /* disable interrupts */
703 outb(0x0f, dev->iobase+PCI1736_3_INT_CLR);/* clear interrupts */
704 outb(0, dev->iobase+PCI1736_3_INT_RF); /* set rising edge trigger */
705 break;
706
707 case TYPE_PCI1750:
708 case TYPE_PCI1751:
709 outb(0x88, dev->iobase + PCI1750_ICR); /* disable & clear interrupts */
710 break;
711 case TYPE_PCI1752:
712 outw(0, dev->iobase + PCI1752_6_CFC); /* disable channel freeze function */
713 outw(0, dev->iobase + PCI1752_IDO); /* clear outputs */
714 outw(0, dev->iobase + PCI1752_IDO + 2);
715 outw(0, dev->iobase + PCI1752_IDO2);
716 outw(0, dev->iobase + PCI1752_IDO2 + 2);
717 break;
718 case TYPE_PCI1753E:
719 outb(0x88, dev->iobase + PCI1753E_ICR0); /* disable & clear interrupts */
720 outb(0x80, dev->iobase + PCI1753E_ICR1);
721 outb(0x80, dev->iobase + PCI1753E_ICR2);
722 outb(0x80, dev->iobase + PCI1753E_ICR3);
723 /* NO break there! */
724 case TYPE_PCI1753:
725 outb(0x88, dev->iobase + PCI1753_ICR0); /* disable & clear interrupts */
726 outb(0x80, dev->iobase + PCI1753_ICR1);
727 outb(0x80, dev->iobase + PCI1753_ICR2);
728 outb(0x80, dev->iobase + PCI1753_ICR3);
729 break;
730 case TYPE_PCI1754:
731 outw(0x08, dev->iobase + PCI1754_6_ICR0); /* disable and clear interrupts */
732 outw(0x08, dev->iobase + PCI1754_6_ICR1);
733 outw(0x08, dev->iobase + PCI1754_ICR2);
734 outw(0x08, dev->iobase + PCI1754_ICR3);
735 break;
736 case TYPE_PCI1756:
737 outw(0, dev->iobase + PCI1752_6_CFC); /* disable channel freeze function */
738 outw(0x08, dev->iobase + PCI1754_6_ICR0); /* disable and clear interrupts */
739 outw(0x08, dev->iobase + PCI1754_6_ICR1);
740 outw(0, dev->iobase + PCI1756_IDO); /* clear outputs */
741 outw(0, dev->iobase + PCI1756_IDO + 2);
742 break;
743 case TYPE_PCI1760:
744 pci1760_reset(dev);
745 break;
746 case TYPE_PCI1762:
747 outw(0x0101, dev->iobase + PCI1762_ICR); /* disable & clear interrupts */
748 break;
749 }
750
751 DPRINTK("adv_pci_dio EDBG: END: pci171x_reset(...)\n");
752
753 return 0;
754 }
755
756 /*
757 ==============================================================================
758 */
759 static int pci1760_attach(struct comedi_device *dev, struct comedi_devconfig *it)
760 {
761 struct comedi_subdevice *s;
762 int subdev = 0;
763
764 s = dev->subdevices + subdev;
765 s->type = COMEDI_SUBD_DI;
766 s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_COMMON;
767 s->n_chan = 8;
768 s->maxdata = 1;
769 s->len_chanlist = 8;
770 s->range_table = &range_digital;
771 s->insn_bits = pci1760_insn_bits_di;
772 subdev++;
773
774 s = dev->subdevices + subdev;
775 s->type = COMEDI_SUBD_DO;
776 s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_COMMON;
777 s->n_chan = 8;
778 s->maxdata = 1;
779 s->len_chanlist = 8;
780 s->range_table = &range_digital;
781 s->state = 0;
782 s->insn_bits = pci1760_insn_bits_do;
783 subdev++;
784
785 s = dev->subdevices + subdev;
786 s->type = COMEDI_SUBD_TIMER;
787 s->subdev_flags = SDF_WRITABLE | SDF_LSAMPL;
788 s->n_chan = 2;
789 s->maxdata = 0xffffffff;
790 s->len_chanlist = 2;
791 /* s->insn_config=pci1760_insn_pwm_cfg; */
792 subdev++;
793
794 s = dev->subdevices + subdev;
795 s->type = COMEDI_SUBD_COUNTER;
796 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
797 s->n_chan = 8;
798 s->maxdata = 0xffff;
799 s->len_chanlist = 8;
800 s->insn_read = pci1760_insn_cnt_read;
801 s->insn_write = pci1760_insn_cnt_write;
802 /* s->insn_config=pci1760_insn_cnt_cfg; */
803 subdev++;
804
805 return 0;
806 }
807
808 /*
809 ==============================================================================
810 */
811 static int pci_dio_add_di(struct comedi_device *dev, struct comedi_subdevice *s,
812 const struct diosubd_data *d, int subdev)
813 {
814 s->type = COMEDI_SUBD_DI;
815 s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_COMMON | d->specflags;
816 if (d->chans > 16)
817 s->subdev_flags |= SDF_LSAMPL;
818 s->n_chan = d->chans;
819 s->maxdata = 1;
820 s->len_chanlist = d->chans;
821 s->range_table = &range_digital;
822 switch (this_board->io_access) {
823 case IO_8b:
824 s->insn_bits = pci_dio_insn_bits_di_b;
825 break;
826 case IO_16b:
827 s->insn_bits = pci_dio_insn_bits_di_w;
828 break;
829 }
830 s->private = (void *)d;
831
832 return 0;
833 }
834
835 /*
836 ==============================================================================
837 */
838 static int pci_dio_add_do(struct comedi_device *dev, struct comedi_subdevice *s,
839 const struct diosubd_data *d, int subdev)
840 {
841 s->type = COMEDI_SUBD_DO;
842 s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_COMMON;
843 if (d->chans > 16)
844 s->subdev_flags |= SDF_LSAMPL;
845 s->n_chan = d->chans;
846 s->maxdata = 1;
847 s->len_chanlist = d->chans;
848 s->range_table = &range_digital;
849 s->state = 0;
850 switch (this_board->io_access) {
851 case IO_8b:
852 s->insn_bits = pci_dio_insn_bits_do_b;
853 break;
854 case IO_16b:
855 s->insn_bits = pci_dio_insn_bits_do_w;
856 break;
857 }
858 s->private = (void *)d;
859
860 return 0;
861 }
862
863 /*
864 ==============================================================================
865 */
866 static int CheckAndAllocCard(struct comedi_device *dev, struct comedi_devconfig *it,
867 struct pci_dev *pcidev)
868 {
869 struct pci_dio_private *pr, *prev;
870
871 for (pr = pci_priv, prev = NULL; pr != NULL; prev = pr, pr = pr->next) {
872 if (pr->pcidev == pcidev) {
873 return 0; /* this card is used, look for another */
874 }
875 }
876
877 if (prev) {
878 devpriv->prev = prev;
879 prev->next = devpriv;
880 } else {
881 pci_priv = devpriv;
882 }
883
884 devpriv->pcidev = pcidev;
885
886 return 1;
887 }
888
889 /*
890 ==============================================================================
891 */
892 static int pci_dio_attach(struct comedi_device *dev, struct comedi_devconfig *it)
893 {
894 struct comedi_subdevice *s;
895 int ret, subdev, n_subdevices, i, j;
896 unsigned long iobase;
897 struct pci_dev *pcidev;
898
899 rt_printk("comedi%d: adv_pci_dio: ", dev->minor);
900
901 ret = alloc_private(dev, sizeof(struct pci_dio_private));
902 if (ret < 0) {
903 rt_printk(", Error: Cann't allocate private memory!\n");
904 return -ENOMEM;
905 }
906
907 for (pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
908 pcidev != NULL;
909 pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pcidev)) {
910 /* loop through cards supported by this driver */
911 for (i = 0; i < n_boardtypes; ++i) {
912 if (boardtypes[i].vendor_id != pcidev->vendor)
913 continue;
914 if (boardtypes[i].device_id != pcidev->device)
915 continue;
916 /* was a particular bus/slot requested? */
917 if (it->options[0] || it->options[1]) {
918 /* are we on the wrong bus/slot? */
919 if (pcidev->bus->number != it->options[0] ||
920 PCI_SLOT(pcidev->devfn) !=
921 it->options[1]) {
922 continue;
923 }
924 }
925 ret = CheckAndAllocCard(dev, it, pcidev);
926 if (ret != 1) continue;
927 dev->board_ptr = boardtypes + i;
928 break;
929 }
930 if (dev->board_ptr)
931 break;
932 }
933
934 if (!dev->board_ptr) {
935 rt_printk
936 (", Error: Requested type of the card was not found!\n");
937 return -EIO;
938 }
939
940 if (comedi_pci_enable(pcidev, driver_pci_dio.driver_name)) {
941 rt_printk
942 (", Error: Can't enable PCI device and request regions!\n");
943 return -EIO;
944 }
945 iobase = pci_resource_start(pcidev, this_board->main_pci_region);
946 rt_printk(", b:s:f=%d:%d:%d, io=0x%4lx",
947 pcidev->bus->number, PCI_SLOT(pcidev->devfn),
948 PCI_FUNC(pcidev->devfn), iobase);
949
950 dev->iobase = iobase;
951 dev->board_name = this_board->name;
952
953 if (this_board->cardtype == TYPE_PCI1760) {
954 n_subdevices = 4; /* 8 IDI, 8 IDO, 2 PWM, 8 CNT */
955 } else {
956 n_subdevices = 0;
957 for (i = 0; i < MAX_DI_SUBDEVS; i++)
958 if (this_board->sdi[i].chans)
959 n_subdevices++;
960 for (i = 0; i < MAX_DO_SUBDEVS; i++)
961 if (this_board->sdo[i].chans)
962 n_subdevices++;
963 for (i = 0; i < MAX_DIO_SUBDEVG; i++)
964 n_subdevices += this_board->sdio[i].regs;
965 if (this_board->boardid.chans)
966 n_subdevices++;
967 }
968
969 ret = alloc_subdevices(dev, n_subdevices);
970 if (ret < 0) {
971 rt_printk(", Error: Cann't allocate subdevice memory!\n");
972 return ret;
973 }
974
975 rt_printk(".\n");
976
977 subdev = 0;
978
979 for (i = 0; i < MAX_DI_SUBDEVS; i++)
980 if (this_board->sdi[i].chans) {
981 s = dev->subdevices + subdev;
982 pci_dio_add_di(dev, s, &this_board->sdi[i], subdev);
983 subdev++;
984 }
985
986 for (i = 0; i < MAX_DO_SUBDEVS; i++)
987 if (this_board->sdo[i].chans) {
988 s = dev->subdevices + subdev;
989 pci_dio_add_do(dev, s, &this_board->sdo[i], subdev);
990 subdev++;
991 }
992
993 for (i = 0; i < MAX_DIO_SUBDEVG; i++)
994 for (j = 0; j < this_board->sdio[i].regs; j++) {
995 s = dev->subdevices + subdev;
996 subdev_8255_init(dev, s, NULL,
997 dev->iobase + this_board->sdio[i].addr +
998 SIZE_8255 * j);
999 subdev++;
1000 }
1001
1002 if (this_board->boardid.chans) {
1003 s = dev->subdevices + subdev;
1004 s->type = COMEDI_SUBD_DI;
1005 pci_dio_add_di(dev, s, &this_board->boardid, subdev);
1006 subdev++;
1007 }
1008
1009 if (this_board->cardtype == TYPE_PCI1760)
1010 pci1760_attach(dev, it);
1011
1012 devpriv->valid = 1;
1013
1014 pci_dio_reset(dev);
1015
1016 return 0;
1017 }
1018
1019 /*
1020 ==============================================================================
1021 */
1022 static int pci_dio_detach(struct comedi_device *dev)
1023 {
1024 int i, j;
1025 struct comedi_subdevice *s;
1026 int subdev;
1027
1028 if (dev->private) {
1029 if (devpriv->valid) {
1030 pci_dio_reset(dev);
1031 }
1032
1033 /* This shows the silliness of using this kind of
1034 * scheme for numbering subdevices. Don't do it. --ds */
1035 subdev = 0;
1036 for (i = 0; i < MAX_DI_SUBDEVS; i++) {
1037 if (this_board->sdi[i].chans) {
1038 subdev++;
1039 }
1040 }
1041 for (i = 0; i < MAX_DO_SUBDEVS; i++) {
1042 if (this_board->sdo[i].chans) {
1043 subdev++;
1044 }
1045 }
1046 for (i = 0; i < MAX_DIO_SUBDEVG; i++) {
1047 for (j = 0; j < this_board->sdio[i].regs; j++) {
1048 s = dev->subdevices + subdev;
1049 subdev_8255_cleanup(dev, s);
1050 subdev++;
1051 }
1052 }
1053
1054 for (i = 0; i < dev->n_subdevices; i++) {
1055 s = dev->subdevices + i;
1056 s->private = NULL;
1057 }
1058
1059 if (devpriv->pcidev) {
1060 if (dev->iobase) {
1061 comedi_pci_disable(devpriv->pcidev);
1062 }
1063 pci_dev_put(devpriv->pcidev);
1064 }
1065
1066 if (devpriv->prev) {
1067 devpriv->prev->next = devpriv->next;
1068 } else {
1069 pci_priv = devpriv->next;
1070 }
1071 if (devpriv->next) {
1072 devpriv->next->prev = devpriv->prev;
1073 }
1074 }
1075
1076 return 0;
1077 }
1078
1079 /*
1080 ==============================================================================
1081 */
1082 COMEDI_PCI_INITCLEANUP(driver_pci_dio, pci_dio_pci_table);
1083 /*
1084 ==============================================================================
1085 */
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree