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ea1aeae4 IA |
1 | /* |
2 | comedi/drivers/amplc_pci224.c | |
3 | Driver for Amplicon PCI224 and PCI234 AO boards. | |
4 | ||
5 | Copyright (C) 2005 MEV Ltd. <http://www.mev.co.uk/> | |
6 | ||
7 | COMEDI - Linux Control and Measurement Device Interface | |
8 | Copyright (C) 1998,2000 David A. Schleef <ds@schleef.org> | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
23 | ||
24 | */ | |
25 | /* | |
26 | Driver: amplc_pci224 | |
27 | Description: Amplicon PCI224, PCI234 | |
28 | Author: Ian Abbott <abbotti@mev.co.uk> | |
29 | Devices: [Amplicon] PCI224 (amplc_pci224 or pci224), | |
30 | PCI234 (amplc_pci224 or pci234) | |
31 | Updated: Wed, 22 Oct 2008 12:25:08 +0100 | |
32 | Status: works, but see caveats | |
33 | ||
34 | Supports: | |
35 | ||
36 | - ao_insn read/write | |
37 | - ao_do_cmd mode with the following sources: | |
38 | ||
39 | - start_src TRIG_INT TRIG_EXT | |
40 | - scan_begin_src TRIG_TIMER TRIG_EXT | |
41 | - convert_src TRIG_NOW | |
42 | - scan_end_src TRIG_COUNT | |
43 | - stop_src TRIG_COUNT TRIG_EXT TRIG_NONE | |
44 | ||
45 | The channel list must contain at least one channel with no repeated | |
46 | channels. The scan end count must equal the number of channels in | |
47 | the channel list. | |
48 | ||
49 | There is only one external trigger source so only one of start_src, | |
50 | scan_begin_src or stop_src may use TRIG_EXT. | |
51 | ||
52 | Configuration options - PCI224: | |
53 | [0] - PCI bus of device (optional). | |
54 | [1] - PCI slot of device (optional). | |
55 | If bus/slot is not specified, the first available PCI device | |
56 | will be used. | |
57 | [2] - Select available ranges according to jumper LK1. All channels | |
58 | are set to the same range: | |
59 | 0=Jumper position 1-2 (factory default), 4 software-selectable | |
60 | internal voltage references, giving 4 bipolar and 4 unipolar | |
61 | ranges: | |
62 | [-10V,+10V], [-5V,+5V], [-2.5V,+2.5V], [-1.25V,+1.25V], | |
63 | [0,+10V], [0,+5V], [0,+2.5V], [0,1.25V]. | |
64 | 1=Jumper position 2-3, 1 external voltage reference, giving | |
65 | 1 bipolar and 1 unipolar range: | |
66 | [-Vext,+Vext], [0,+Vext]. | |
67 | ||
68 | Configuration options - PCI234: | |
69 | [0] - PCI bus of device (optional). | |
70 | [1] - PCI slot of device (optional). | |
71 | If bus/slot is not specified, the first available PCI device | |
72 | will be used. | |
73 | [2] - Select internal or external voltage reference according to | |
74 | jumper LK1. This affects all channels: | |
75 | 0=Jumper position 1-2 (factory default), Vref=5V internal. | |
76 | 1=Jumper position 2-3, Vref=Vext external. | |
77 | [3] - Select channel 0 range according to jumper LK2: | |
78 | 0=Jumper position 2-3 (factory default), range [-2*Vref,+2*Vref] | |
79 | (10V bipolar when options[2]=0). | |
80 | 1=Jumper position 1-2, range [-Vref,+Vref] | |
81 | (5V bipolar when options[2]=0). | |
82 | [4] - Select channel 1 range according to jumper LK3: cf. options[3]. | |
83 | [5] - Select channel 2 range according to jumper LK4: cf. options[3]. | |
84 | [6] - Select channel 3 range according to jumper LK5: cf. options[3]. | |
85 | ||
86 | Passing a zero for an option is the same as leaving it unspecified. | |
87 | ||
88 | Caveats: | |
89 | ||
90 | 1) All channels on the PCI224 share the same range. Any change to the | |
91 | range as a result of insn_write or a streaming command will affect | |
92 | the output voltages of all channels, including those not specified | |
93 | by the instruction or command. | |
94 | ||
95 | 2) For the analog output command, the first scan may be triggered | |
96 | falsely at the start of acquisition. This occurs when the DAC scan | |
97 | trigger source is switched from 'none' to 'timer' (scan_begin_src = | |
98 | TRIG_TIMER) or 'external' (scan_begin_src == TRIG_EXT) at the start | |
99 | of acquisition and the trigger source is at logic level 1 at the | |
100 | time of the switch. This is very likely for TRIG_TIMER. For | |
101 | TRIG_EXT, it depends on the state of the external line and whether | |
102 | the CR_INVERT flag has been set. The remaining scans are triggered | |
103 | correctly. | |
104 | */ | |
105 | ||
106 | #include "../comedidev.h" | |
107 | ||
108 | #include "comedi_pci.h" | |
109 | ||
110 | #include "comedi_fc.h" | |
111 | #include "8253.h" | |
112 | ||
113 | #define DRIVER_NAME "amplc_pci224" | |
114 | ||
115 | /* | |
116 | * PCI IDs. | |
117 | */ | |
118 | /* #define PCI_VENDOR_ID_AMPLICON 0x14dc */ | |
119 | #define PCI_DEVICE_ID_AMPLICON_PCI224 0x0007 | |
120 | #define PCI_DEVICE_ID_AMPLICON_PCI234 0x0008 | |
121 | #define PCI_DEVICE_ID_INVALID 0xffff | |
122 | ||
123 | /* | |
124 | * PCI224/234 i/o space 1 (PCIBAR2) registers. | |
125 | */ | |
126 | #define PCI224_IO1_SIZE 0x20 /* Size of i/o space 1 (8-bit registers) */ | |
127 | #define PCI224_Z2_CT0 0x14 /* 82C54 counter/timer 0 */ | |
128 | #define PCI224_Z2_CT1 0x15 /* 82C54 counter/timer 1 */ | |
129 | #define PCI224_Z2_CT2 0x16 /* 82C54 counter/timer 2 */ | |
130 | #define PCI224_Z2_CTC 0x17 /* 82C54 counter/timer control word */ | |
131 | #define PCI224_ZCLK_SCE 0x1A /* Group Z Clock Configuration Register */ | |
132 | #define PCI224_ZGAT_SCE 0x1D /* Group Z Gate Configuration Register */ | |
133 | #define PCI224_INT_SCE 0x1E /* ISR Interrupt source mask register */ | |
134 | /* /Interrupt status */ | |
135 | ||
136 | /* | |
137 | * PCI224/234 i/o space 2 (PCIBAR3) 16-bit registers. | |
138 | */ | |
139 | #define PCI224_IO2_SIZE 0x10 /* Size of i/o space 2 (16-bit registers). */ | |
140 | #define PCI224_DACDATA 0x00 /* (w-o) DAC FIFO data. */ | |
141 | #define PCI224_SOFTTRIG 0x00 /* (r-o) DAC software scan trigger. */ | |
142 | #define PCI224_DACCON 0x02 /* (r/w) DAC status/configuration. */ | |
143 | #define PCI224_FIFOSIZ 0x04 /* (w-o) FIFO size for wraparound mode. */ | |
144 | #define PCI224_DACCEN 0x06 /* (w-o) DAC channel enable register. */ | |
145 | ||
146 | /* | |
147 | * DACCON values. | |
148 | */ | |
149 | /* (r/w) Scan trigger. */ | |
150 | #define PCI224_DACCON_TRIG_MASK (7 << 0) | |
151 | #define PCI224_DACCON_TRIG_NONE (0 << 0) /* none */ | |
152 | #define PCI224_DACCON_TRIG_SW (1 << 0) /* software trig */ | |
153 | #define PCI224_DACCON_TRIG_EXTP (2 << 0) /* ext +ve edge */ | |
154 | #define PCI224_DACCON_TRIG_EXTN (3 << 0) /* ext -ve edge */ | |
155 | #define PCI224_DACCON_TRIG_Z2CT0 (4 << 0) /* Z2 CT0 out */ | |
156 | #define PCI224_DACCON_TRIG_Z2CT1 (5 << 0) /* Z2 CT1 out */ | |
157 | #define PCI224_DACCON_TRIG_Z2CT2 (6 << 0) /* Z2 CT2 out */ | |
158 | /* (r/w) Polarity (PCI224 only, PCI234 always bipolar!). */ | |
159 | #define PCI224_DACCON_POLAR_MASK (1 << 3) | |
160 | #define PCI224_DACCON_POLAR_UNI (0 << 3) /* range [0,Vref] */ | |
161 | #define PCI224_DACCON_POLAR_BI (1 << 3) /* range [-Vref,Vref] */ | |
162 | /* (r/w) Internal Vref (PCI224 only, when LK1 in position 1-2). */ | |
163 | #define PCI224_DACCON_VREF_MASK (3 << 4) | |
164 | #define PCI224_DACCON_VREF_1_25 (0 << 4) /* Vref = 1.25V */ | |
165 | #define PCI224_DACCON_VREF_2_5 (1 << 4) /* Vref = 2.5V */ | |
166 | #define PCI224_DACCON_VREF_5 (2 << 4) /* Vref = 5V */ | |
167 | #define PCI224_DACCON_VREF_10 (3 << 4) /* Vref = 10V */ | |
168 | /* (r/w) Wraparound mode enable (to play back stored waveform). */ | |
169 | #define PCI224_DACCON_FIFOWRAP (1 << 7) | |
170 | /* (r/w) FIFO enable. It MUST be set! */ | |
171 | #define PCI224_DACCON_FIFOENAB (1 << 8) | |
172 | /* (r/w) FIFO interrupt trigger level (most values are not very useful). */ | |
173 | #define PCI224_DACCON_FIFOINTR_MASK (7 << 9) | |
174 | #define PCI224_DACCON_FIFOINTR_EMPTY (0 << 9) /* when empty */ | |
175 | #define PCI224_DACCON_FIFOINTR_NEMPTY (1 << 9) /* when not empty */ | |
176 | #define PCI224_DACCON_FIFOINTR_NHALF (2 << 9) /* when not half full */ | |
177 | #define PCI224_DACCON_FIFOINTR_HALF (3 << 9) /* when half full */ | |
178 | #define PCI224_DACCON_FIFOINTR_NFULL (4 << 9) /* when not full */ | |
179 | #define PCI224_DACCON_FIFOINTR_FULL (5 << 9) /* when full */ | |
180 | /* (r-o) FIFO fill level. */ | |
181 | #define PCI224_DACCON_FIFOFL_MASK (7 << 12) | |
182 | #define PCI224_DACCON_FIFOFL_EMPTY (1 << 12) /* 0 */ | |
183 | #define PCI224_DACCON_FIFOFL_ONETOHALF (0 << 12) /* [1,2048] */ | |
184 | #define PCI224_DACCON_FIFOFL_HALFTOFULL (4 << 12) /* [2049,4095] */ | |
185 | #define PCI224_DACCON_FIFOFL_FULL (6 << 12) /* 4096 */ | |
186 | /* (r-o) DAC busy flag. */ | |
187 | #define PCI224_DACCON_BUSY (1 << 15) | |
188 | /* (w-o) FIFO reset. */ | |
189 | #define PCI224_DACCON_FIFORESET (1 << 12) | |
190 | /* (w-o) Global reset (not sure what it does). */ | |
191 | #define PCI224_DACCON_GLOBALRESET (1 << 13) | |
192 | ||
193 | /* | |
194 | * DAC FIFO size. | |
195 | */ | |
196 | #define PCI224_FIFO_SIZE 4096 | |
197 | ||
198 | /* | |
199 | * DAC FIFO guaranteed minimum room available, depending on reported fill level. | |
200 | * The maximum room available depends on the reported fill level and how much | |
201 | * has been written! | |
202 | */ | |
203 | #define PCI224_FIFO_ROOM_EMPTY PCI224_FIFO_SIZE | |
204 | #define PCI224_FIFO_ROOM_ONETOHALF (PCI224_FIFO_SIZE / 2) | |
205 | #define PCI224_FIFO_ROOM_HALFTOFULL 1 | |
206 | #define PCI224_FIFO_ROOM_FULL 0 | |
207 | ||
208 | /* | |
209 | * Counter/timer clock input configuration sources. | |
210 | */ | |
211 | #define CLK_CLK 0 /* reserved (channel-specific clock) */ | |
212 | #define CLK_10MHZ 1 /* internal 10 MHz clock */ | |
213 | #define CLK_1MHZ 2 /* internal 1 MHz clock */ | |
214 | #define CLK_100KHZ 3 /* internal 100 kHz clock */ | |
215 | #define CLK_10KHZ 4 /* internal 10 kHz clock */ | |
216 | #define CLK_1KHZ 5 /* internal 1 kHz clock */ | |
217 | #define CLK_OUTNM1 6 /* output of channel-1 modulo total */ | |
218 | #define CLK_EXT 7 /* external clock */ | |
219 | /* Macro to construct clock input configuration register value. */ | |
220 | #define CLK_CONFIG(chan, src) ((((chan) & 3) << 3) | ((src) & 7)) | |
221 | /* Timebases in ns. */ | |
222 | #define TIMEBASE_10MHZ 100 | |
223 | #define TIMEBASE_1MHZ 1000 | |
224 | #define TIMEBASE_100KHZ 10000 | |
225 | #define TIMEBASE_10KHZ 100000 | |
226 | #define TIMEBASE_1KHZ 1000000 | |
227 | ||
228 | /* | |
229 | * Counter/timer gate input configuration sources. | |
230 | */ | |
231 | #define GAT_VCC 0 /* VCC (i.e. enabled) */ | |
232 | #define GAT_GND 1 /* GND (i.e. disabled) */ | |
233 | #define GAT_EXT 2 /* reserved (external gate input) */ | |
234 | #define GAT_NOUTNM2 3 /* inverted output of channel-2 modulo total */ | |
235 | /* Macro to construct gate input configuration register value. */ | |
236 | #define GAT_CONFIG(chan, src) ((((chan) & 3) << 3) | ((src) & 7)) | |
237 | ||
238 | /* | |
239 | * Summary of CLK_OUTNM1 and GAT_NOUTNM2 connections for PCI224 and PCI234: | |
240 | * | |
241 | * Channel's Channel's | |
242 | * clock input gate input | |
243 | * Channel CLK_OUTNM1 GAT_NOUTNM2 | |
244 | * ------- ---------- ----------- | |
245 | * Z2-CT0 Z2-CT2-OUT /Z2-CT1-OUT | |
246 | * Z2-CT1 Z2-CT0-OUT /Z2-CT2-OUT | |
247 | * Z2-CT2 Z2-CT1-OUT /Z2-CT0-OUT | |
248 | */ | |
249 | ||
250 | /* | |
251 | * Interrupt enable/status bits | |
252 | */ | |
253 | #define PCI224_INTR_EXT 0x01 /* rising edge on external input */ | |
254 | #define PCI224_INTR_DAC 0x04 /* DAC (FIFO) interrupt */ | |
255 | #define PCI224_INTR_Z2CT1 0x20 /* rising edge on Z2-CT1 output */ | |
256 | ||
257 | #define PCI224_INTR_EDGE_BITS (PCI224_INTR_EXT | PCI224_INTR_Z2CT1) | |
258 | #define PCI224_INTR_LEVEL_BITS PCI224_INTR_DACFIFO | |
259 | ||
260 | /* | |
261 | * Handy macros. | |
262 | */ | |
263 | ||
264 | /* Combine old and new bits. */ | |
265 | #define COMBINE(old, new, mask) (((old) & ~(mask)) | ((new) & (mask))) | |
266 | ||
267 | /* A generic null function pointer value. */ | |
268 | #define NULLFUNC 0 | |
269 | ||
270 | /* Current CPU. XXX should this be hard_smp_processor_id()? */ | |
271 | #define THISCPU smp_processor_id() | |
272 | ||
273 | /* State bits for use with atomic bit operations. */ | |
274 | #define AO_CMD_STARTED 0 | |
275 | ||
276 | /* | |
277 | * Range tables. | |
278 | */ | |
279 | ||
280 | /* The software selectable internal ranges for PCI224 (option[2] == 0). */ | |
281 | static const comedi_lrange range_pci224_internal = { | |
282 | 8, | |
283 | { | |
284 | BIP_RANGE(10), | |
285 | BIP_RANGE(5), | |
286 | BIP_RANGE(2.5), | |
287 | BIP_RANGE(1.25), | |
288 | UNI_RANGE(10), | |
289 | UNI_RANGE(5), | |
290 | UNI_RANGE(2.5), | |
291 | UNI_RANGE(1.25), | |
292 | } | |
293 | }; | |
294 | ||
295 | static const unsigned short hwrange_pci224_internal[8] = { | |
296 | PCI224_DACCON_POLAR_BI | PCI224_DACCON_VREF_10, | |
297 | PCI224_DACCON_POLAR_BI | PCI224_DACCON_VREF_5, | |
298 | PCI224_DACCON_POLAR_BI | PCI224_DACCON_VREF_2_5, | |
299 | PCI224_DACCON_POLAR_BI | PCI224_DACCON_VREF_1_25, | |
300 | PCI224_DACCON_POLAR_UNI | PCI224_DACCON_VREF_10, | |
301 | PCI224_DACCON_POLAR_UNI | PCI224_DACCON_VREF_5, | |
302 | PCI224_DACCON_POLAR_UNI | PCI224_DACCON_VREF_2_5, | |
303 | PCI224_DACCON_POLAR_UNI | PCI224_DACCON_VREF_1_25, | |
304 | }; | |
305 | ||
306 | /* The software selectable external ranges for PCI224 (option[2] == 1). */ | |
307 | static const comedi_lrange range_pci224_external = { | |
308 | 2, | |
309 | { | |
310 | RANGE_ext(-1, 1), /* bipolar [-Vref,+Vref] */ | |
311 | RANGE_ext(0, 1), /* unipolar [0,+Vref] */ | |
312 | } | |
313 | }; | |
314 | ||
315 | static const unsigned short hwrange_pci224_external[2] = { | |
316 | PCI224_DACCON_POLAR_BI, | |
317 | PCI224_DACCON_POLAR_UNI, | |
318 | }; | |
319 | ||
320 | /* The hardware selectable Vref*2 external range for PCI234 | |
321 | * (option[2] == 1, option[3+n] == 0). */ | |
322 | static const comedi_lrange range_pci234_ext2 = { | |
323 | 1, | |
324 | { | |
325 | RANGE_ext(-2, 2), | |
326 | } | |
327 | }; | |
328 | ||
329 | /* The hardware selectable Vref external range for PCI234 | |
330 | * (option[2] == 1, option[3+n] == 1). */ | |
331 | static const comedi_lrange range_pci234_ext = { | |
332 | 1, | |
333 | { | |
334 | RANGE_ext(-1, 1), | |
335 | } | |
336 | }; | |
337 | ||
338 | /* This serves for all the PCI234 ranges. */ | |
339 | static const unsigned short hwrange_pci234[1] = { | |
340 | PCI224_DACCON_POLAR_BI, /* bipolar - hardware ignores it! */ | |
341 | }; | |
342 | ||
343 | /* | |
344 | * Board descriptions. | |
345 | */ | |
346 | ||
347 | enum pci224_model { any_model, pci224_model, pci234_model }; | |
348 | ||
349 | typedef struct pci224_board_struct { | |
350 | const char *name; | |
351 | unsigned short devid; | |
352 | enum pci224_model model; | |
353 | unsigned int ao_chans; | |
354 | unsigned int ao_bits; | |
355 | } pci224_board; | |
356 | ||
357 | static const pci224_board pci224_boards[] = { | |
358 | { | |
359 | name: "pci224", | |
360 | devid: PCI_DEVICE_ID_AMPLICON_PCI224, | |
361 | model: pci224_model, | |
362 | ao_chans:16, | |
363 | ao_bits: 12, | |
364 | }, | |
365 | { | |
366 | name: "pci234", | |
367 | devid: PCI_DEVICE_ID_AMPLICON_PCI234, | |
368 | model: pci234_model, | |
369 | ao_chans:4, | |
370 | ao_bits: 16, | |
371 | }, | |
372 | { | |
373 | name: DRIVER_NAME, | |
374 | devid: PCI_DEVICE_ID_INVALID, | |
375 | model: any_model, /* wildcard */ | |
376 | }, | |
377 | }; | |
378 | ||
379 | /* | |
380 | * PCI driver table. | |
381 | */ | |
382 | ||
383 | static DEFINE_PCI_DEVICE_TABLE(pci224_pci_table) = { | |
384 | {PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI224, | |
385 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
386 | {PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI234, | |
387 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
388 | {0} | |
389 | }; | |
390 | ||
391 | MODULE_DEVICE_TABLE(pci, pci224_pci_table); | |
392 | ||
393 | /* | |
394 | * Useful for shorthand access to the particular board structure | |
395 | */ | |
396 | #define thisboard ((pci224_board *)dev->board_ptr) | |
397 | ||
398 | /* this structure is for data unique to this hardware driver. If | |
399 | several hardware drivers keep similar information in this structure, | |
400 | feel free to suggest moving the variable to the comedi_device struct. */ | |
401 | typedef struct { | |
402 | struct pci_dev *pci_dev; /* PCI device */ | |
403 | const unsigned short *hwrange; | |
404 | unsigned long iobase1; | |
405 | unsigned long state; | |
406 | spinlock_t ao_spinlock; | |
790c5541 BP |
407 | unsigned int *ao_readback; |
408 | short *ao_scan_vals; | |
ea1aeae4 IA |
409 | unsigned char *ao_scan_order; |
410 | int intr_cpuid; | |
411 | short intr_running; | |
412 | unsigned short daccon; | |
413 | unsigned int cached_div1; | |
414 | unsigned int cached_div2; | |
415 | unsigned int ao_stop_count; | |
416 | short ao_stop_continuous; | |
417 | unsigned short ao_enab; /* max 16 channels so 'short' will do */ | |
418 | unsigned char intsce; | |
419 | } pci224_private; | |
420 | ||
421 | #define devpriv ((pci224_private *)dev->private) | |
422 | ||
423 | /* | |
424 | * The comedi_driver structure tells the Comedi core module | |
425 | * which functions to call to configure/deconfigure (attach/detach) | |
426 | * the board, and also about the kernel module that contains | |
427 | * the device code. | |
428 | */ | |
429 | static int pci224_attach(comedi_device * dev, comedi_devconfig * it); | |
430 | static int pci224_detach(comedi_device * dev); | |
431 | static comedi_driver driver_amplc_pci224 = { | |
432 | driver_name:DRIVER_NAME, | |
433 | module:THIS_MODULE, | |
434 | attach:pci224_attach, | |
435 | detach:pci224_detach, | |
436 | board_name:&pci224_boards[0].name, | |
437 | offset:sizeof(pci224_board), | |
438 | num_names:sizeof(pci224_boards) / sizeof(pci224_board), | |
439 | }; | |
440 | ||
441 | COMEDI_PCI_INITCLEANUP(driver_amplc_pci224, pci224_pci_table); | |
442 | ||
443 | /* | |
444 | * Called from the 'insn_write' function to perform a single write. | |
445 | */ | |
446 | static void | |
790c5541 | 447 | pci224_ao_set_data(comedi_device * dev, int chan, int range, unsigned int data) |
ea1aeae4 IA |
448 | { |
449 | unsigned short mangled; | |
450 | ||
451 | /* Store unmangled data for readback. */ | |
452 | devpriv->ao_readback[chan] = data; | |
453 | /* Enable the channel. */ | |
454 | outw(1 << chan, dev->iobase + PCI224_DACCEN); | |
455 | /* Set range and reset FIFO. */ | |
456 | devpriv->daccon = COMBINE(devpriv->daccon, devpriv->hwrange[range], | |
457 | (PCI224_DACCON_POLAR_MASK | PCI224_DACCON_VREF_MASK)); | |
458 | outw(devpriv->daccon | PCI224_DACCON_FIFORESET, | |
459 | dev->iobase + PCI224_DACCON); | |
460 | /* | |
461 | * Mangle the data. The hardware expects: | |
462 | * - bipolar: 16-bit 2's complement | |
463 | * - unipolar: 16-bit unsigned | |
464 | */ | |
465 | mangled = (unsigned short)data << (16 - thisboard->ao_bits); | |
466 | if ((devpriv->daccon & PCI224_DACCON_POLAR_MASK) == | |
467 | PCI224_DACCON_POLAR_BI) { | |
468 | mangled ^= 0x8000; | |
469 | } | |
470 | /* Write mangled data to the FIFO. */ | |
471 | outw(mangled, dev->iobase + PCI224_DACDATA); | |
472 | /* Trigger the conversion. */ | |
473 | inw(dev->iobase + PCI224_SOFTTRIG); | |
474 | } | |
475 | ||
476 | /* | |
477 | * 'insn_write' function for AO subdevice. | |
478 | */ | |
479 | static int | |
480 | pci224_ao_insn_write(comedi_device * dev, comedi_subdevice * s, | |
790c5541 | 481 | comedi_insn * insn, unsigned int * data) |
ea1aeae4 IA |
482 | { |
483 | int i; | |
484 | int chan, range; | |
485 | ||
486 | /* Unpack channel and range. */ | |
487 | chan = CR_CHAN(insn->chanspec); | |
488 | range = CR_RANGE(insn->chanspec); | |
489 | ||
490 | /* Writing a list of values to an AO channel is probably not | |
491 | * very useful, but that's how the interface is defined. */ | |
492 | for (i = 0; i < insn->n; i++) { | |
493 | pci224_ao_set_data(dev, chan, range, data[i]); | |
494 | } | |
495 | return i; | |
496 | } | |
497 | ||
498 | /* | |
499 | * 'insn_read' function for AO subdevice. | |
500 | * | |
501 | * N.B. The value read will not be valid if the DAC channel has | |
502 | * never been written successfully since the device was attached | |
503 | * or since the channel has been used by an AO streaming write | |
504 | * command. | |
505 | */ | |
506 | static int | |
507 | pci224_ao_insn_read(comedi_device * dev, comedi_subdevice * s, | |
790c5541 | 508 | comedi_insn * insn, unsigned int * data) |
ea1aeae4 IA |
509 | { |
510 | int i; | |
511 | int chan; | |
512 | ||
513 | chan = CR_CHAN(insn->chanspec); | |
514 | ||
515 | for (i = 0; i < insn->n; i++) { | |
516 | data[i] = devpriv->ao_readback[chan]; | |
517 | } | |
518 | ||
519 | return i; | |
520 | } | |
521 | ||
522 | /* | |
523 | * Just a wrapper for the inline function 'i8253_cascade_ns_to_timer'. | |
524 | */ | |
525 | static void | |
526 | pci224_cascade_ns_to_timer(int osc_base, unsigned int *d1, unsigned int *d2, | |
527 | unsigned int *nanosec, int round_mode) | |
528 | { | |
529 | i8253_cascade_ns_to_timer(osc_base, d1, d2, nanosec, round_mode); | |
530 | } | |
531 | ||
532 | /* | |
533 | * Kills a command running on the AO subdevice. | |
534 | */ | |
535 | static void pci224_ao_stop(comedi_device * dev, comedi_subdevice * s) | |
536 | { | |
537 | unsigned long flags; | |
538 | ||
539 | if (!test_and_clear_bit(AO_CMD_STARTED, &devpriv->state)) { | |
540 | return; | |
541 | } | |
542 | ||
543 | comedi_spin_lock_irqsave(&devpriv->ao_spinlock, flags); | |
544 | /* Kill the interrupts. */ | |
545 | devpriv->intsce = 0; | |
546 | outb(0, devpriv->iobase1 + PCI224_INT_SCE); | |
547 | /* | |
548 | * Interrupt routine may or may not be running. We may or may not | |
549 | * have been called from the interrupt routine (directly or | |
550 | * indirectly via a comedi_events() callback routine). It's highly | |
551 | * unlikely that we've been called from some other interrupt routine | |
552 | * but who knows what strange things coders get up to! | |
553 | * | |
554 | * If the interrupt routine is currently running, wait for it to | |
555 | * finish, unless we appear to have been called via the interrupt | |
556 | * routine. | |
557 | */ | |
558 | while (devpriv->intr_running && devpriv->intr_cpuid != THISCPU) { | |
559 | comedi_spin_unlock_irqrestore(&devpriv->ao_spinlock, flags); | |
560 | comedi_spin_lock_irqsave(&devpriv->ao_spinlock, flags); | |
561 | } | |
562 | comedi_spin_unlock_irqrestore(&devpriv->ao_spinlock, flags); | |
563 | /* Reconfigure DAC for insn_write usage. */ | |
564 | outw(0, dev->iobase + PCI224_DACCEN); /* Disable channels. */ | |
565 | devpriv->daccon = COMBINE(devpriv->daccon, | |
566 | PCI224_DACCON_TRIG_SW | PCI224_DACCON_FIFOINTR_EMPTY, | |
567 | PCI224_DACCON_TRIG_MASK | PCI224_DACCON_FIFOINTR_MASK); | |
568 | outw(devpriv->daccon | PCI224_DACCON_FIFORESET, | |
569 | dev->iobase + PCI224_DACCON); | |
570 | } | |
571 | ||
572 | /* | |
573 | * Handles start of acquisition for the AO subdevice. | |
574 | */ | |
575 | static void pci224_ao_start(comedi_device * dev, comedi_subdevice * s) | |
576 | { | |
577 | comedi_cmd *cmd = &s->async->cmd; | |
578 | unsigned long flags; | |
579 | ||
580 | set_bit(AO_CMD_STARTED, &devpriv->state); | |
581 | if (!devpriv->ao_stop_continuous && devpriv->ao_stop_count == 0) { | |
582 | /* An empty acquisition! */ | |
583 | pci224_ao_stop(dev, s); | |
584 | s->async->events |= COMEDI_CB_EOA; | |
585 | comedi_event(dev, s); | |
586 | } else { | |
587 | /* Enable interrupts. */ | |
588 | comedi_spin_lock_irqsave(&devpriv->ao_spinlock, flags); | |
589 | if (cmd->stop_src == TRIG_EXT) { | |
590 | devpriv->intsce = PCI224_INTR_EXT | PCI224_INTR_DAC; | |
591 | } else { | |
592 | devpriv->intsce = PCI224_INTR_DAC; | |
593 | } | |
594 | outb(devpriv->intsce, devpriv->iobase1 + PCI224_INT_SCE); | |
595 | comedi_spin_unlock_irqrestore(&devpriv->ao_spinlock, flags); | |
596 | } | |
597 | } | |
598 | ||
599 | /* | |
600 | * Handles interrupts from the DAC FIFO. | |
601 | */ | |
602 | static void pci224_ao_handle_fifo(comedi_device * dev, comedi_subdevice * s) | |
603 | { | |
604 | comedi_cmd *cmd = &s->async->cmd; | |
605 | unsigned int num_scans; | |
606 | unsigned int room; | |
607 | unsigned short dacstat; | |
608 | unsigned int i, n; | |
609 | unsigned int bytes_per_scan; | |
610 | ||
611 | if (cmd->chanlist_len) { | |
790c5541 | 612 | bytes_per_scan = cmd->chanlist_len * sizeof(short); |
ea1aeae4 IA |
613 | } else { |
614 | /* Shouldn't get here! */ | |
790c5541 | 615 | bytes_per_scan = sizeof(short); |
ea1aeae4 IA |
616 | } |
617 | /* Determine number of scans available in buffer. */ | |
618 | num_scans = comedi_buf_read_n_available(s->async) / bytes_per_scan; | |
619 | if (!devpriv->ao_stop_continuous) { | |
620 | /* Fixed number of scans. */ | |
621 | if (num_scans > devpriv->ao_stop_count) { | |
622 | num_scans = devpriv->ao_stop_count; | |
623 | } | |
624 | } | |
625 | ||
626 | /* Determine how much room is in the FIFO (in samples). */ | |
627 | dacstat = inw(dev->iobase + PCI224_DACCON); | |
628 | switch (dacstat & PCI224_DACCON_FIFOFL_MASK) { | |
629 | case PCI224_DACCON_FIFOFL_EMPTY: | |
630 | room = PCI224_FIFO_ROOM_EMPTY; | |
631 | if (!devpriv->ao_stop_continuous | |
632 | && devpriv->ao_stop_count == 0) { | |
633 | /* FIFO empty at end of counted acquisition. */ | |
634 | pci224_ao_stop(dev, s); | |
635 | s->async->events |= COMEDI_CB_EOA; | |
636 | comedi_event(dev, s); | |
637 | return; | |
638 | } | |
639 | break; | |
640 | case PCI224_DACCON_FIFOFL_ONETOHALF: | |
641 | room = PCI224_FIFO_ROOM_ONETOHALF; | |
642 | break; | |
643 | case PCI224_DACCON_FIFOFL_HALFTOFULL: | |
644 | room = PCI224_FIFO_ROOM_HALFTOFULL; | |
645 | break; | |
646 | default: | |
647 | room = PCI224_FIFO_ROOM_FULL; | |
648 | break; | |
649 | } | |
650 | if (room >= PCI224_FIFO_ROOM_ONETOHALF) { | |
651 | /* FIFO is less than half-full. */ | |
652 | if (num_scans == 0) { | |
653 | /* Nothing left to put in the FIFO. */ | |
654 | pci224_ao_stop(dev, s); | |
655 | s->async->events |= COMEDI_CB_OVERFLOW; | |
656 | rt_printk(KERN_ERR "comedi%d: " | |
657 | "AO buffer underrun\n", dev->minor); | |
658 | } | |
659 | } | |
660 | /* Determine how many new scans can be put in the FIFO. */ | |
661 | if (cmd->chanlist_len) { | |
662 | room /= cmd->chanlist_len; | |
663 | } | |
664 | /* Determine how many scans to process. */ | |
665 | if (num_scans > room) { | |
666 | num_scans = room; | |
667 | } | |
668 | /* Process scans. */ | |
669 | for (n = 0; n < num_scans; n++) { | |
670 | cfc_read_array_from_buffer(s, &devpriv->ao_scan_vals[0], | |
671 | bytes_per_scan); | |
672 | for (i = 0; i < cmd->chanlist_len; i++) { | |
673 | outw(devpriv->ao_scan_vals[devpriv-> | |
674 | ao_scan_order[i]], | |
675 | dev->iobase + PCI224_DACDATA); | |
676 | } | |
677 | } | |
678 | if (!devpriv->ao_stop_continuous) { | |
679 | devpriv->ao_stop_count -= num_scans; | |
680 | if (devpriv->ao_stop_count == 0) { | |
681 | /* | |
682 | * Change FIFO interrupt trigger level to wait | |
683 | * until FIFO is empty. | |
684 | */ | |
685 | devpriv->daccon = COMBINE(devpriv->daccon, | |
686 | PCI224_DACCON_FIFOINTR_EMPTY, | |
687 | PCI224_DACCON_FIFOINTR_MASK); | |
688 | outw(devpriv->daccon, | |
689 | dev->iobase + PCI224_DACCON); | |
690 | } | |
691 | } | |
692 | if ((devpriv->daccon & PCI224_DACCON_TRIG_MASK) == | |
693 | PCI224_DACCON_TRIG_NONE) { | |
694 | unsigned short trig; | |
695 | ||
696 | /* | |
697 | * This is the initial DAC FIFO interrupt at the | |
698 | * start of the acquisition. The DAC's scan trigger | |
699 | * has been set to 'none' up until now. | |
700 | * | |
701 | * Now that data has been written to the FIFO, the | |
702 | * DAC's scan trigger source can be set to the | |
703 | * correct value. | |
704 | * | |
705 | * BUG: The first scan will be triggered immediately | |
706 | * if the scan trigger source is at logic level 1. | |
707 | */ | |
708 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
709 | trig = PCI224_DACCON_TRIG_Z2CT0; | |
710 | } else { | |
711 | /* cmd->scan_begin_src == TRIG_EXT */ | |
712 | if (cmd->scan_begin_arg & CR_INVERT) { | |
713 | trig = PCI224_DACCON_TRIG_EXTN; | |
714 | } else { | |
715 | trig = PCI224_DACCON_TRIG_EXTP; | |
716 | } | |
717 | } | |
718 | devpriv->daccon = COMBINE(devpriv->daccon, trig, | |
719 | PCI224_DACCON_TRIG_MASK); | |
720 | outw(devpriv->daccon, dev->iobase + PCI224_DACCON); | |
721 | } | |
722 | if (s->async->events) { | |
723 | comedi_event(dev, s); | |
724 | } | |
725 | } | |
726 | ||
727 | /* | |
728 | * Internal trigger function to start acquisition on AO subdevice. | |
729 | */ | |
730 | static int | |
731 | pci224_ao_inttrig_start(comedi_device * dev, comedi_subdevice * s, | |
732 | unsigned int trignum) | |
733 | { | |
734 | if (trignum != 0) | |
735 | return -EINVAL; | |
736 | ||
737 | s->async->inttrig = NULLFUNC; | |
738 | pci224_ao_start(dev, s); | |
739 | ||
740 | return 1; | |
741 | } | |
742 | ||
743 | #define MAX_SCAN_PERIOD 0xFFFFFFFFU | |
744 | #define MIN_SCAN_PERIOD 2500 | |
745 | #define CONVERT_PERIOD 625 | |
746 | ||
747 | /* | |
748 | * 'do_cmdtest' function for AO subdevice. | |
749 | */ | |
750 | static int | |
751 | pci224_ao_cmdtest(comedi_device * dev, comedi_subdevice * s, comedi_cmd * cmd) | |
752 | { | |
753 | int err = 0; | |
754 | unsigned int tmp; | |
755 | ||
756 | /* Step 1: make sure trigger sources are trivially valid. */ | |
757 | ||
758 | tmp = cmd->start_src; | |
759 | cmd->start_src &= TRIG_INT | TRIG_EXT; | |
760 | if (!cmd->start_src || tmp != cmd->start_src) | |
761 | err++; | |
762 | ||
763 | tmp = cmd->scan_begin_src; | |
764 | cmd->scan_begin_src &= TRIG_EXT | TRIG_TIMER; | |
765 | if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) | |
766 | err++; | |
767 | ||
768 | tmp = cmd->convert_src; | |
769 | cmd->convert_src &= TRIG_NOW; | |
770 | if (!cmd->convert_src || tmp != cmd->convert_src) | |
771 | err++; | |
772 | ||
773 | tmp = cmd->scan_end_src; | |
774 | cmd->scan_end_src &= TRIG_COUNT; | |
775 | if (!cmd->scan_end_src || tmp != cmd->scan_end_src) | |
776 | err++; | |
777 | ||
778 | tmp = cmd->stop_src; | |
779 | cmd->stop_src &= TRIG_COUNT | TRIG_EXT | TRIG_NONE; | |
780 | if (!cmd->stop_src || tmp != cmd->stop_src) | |
781 | err++; | |
782 | ||
783 | if (err) | |
784 | return 1; | |
785 | ||
786 | /* Step 2: make sure trigger sources are unique and mutually | |
787 | * compatible. */ | |
788 | ||
789 | /* these tests are true if more than one _src bit is set */ | |
790 | if ((cmd->start_src & (cmd->start_src - 1)) != 0) | |
791 | err++; | |
792 | if ((cmd->scan_begin_src & (cmd->scan_begin_src - 1)) != 0) | |
793 | err++; | |
794 | if ((cmd->convert_src & (cmd->convert_src - 1)) != 0) | |
795 | err++; | |
796 | if ((cmd->scan_end_src & (cmd->scan_end_src - 1)) != 0) | |
797 | err++; | |
798 | if ((cmd->stop_src & (cmd->stop_src - 1)) != 0) | |
799 | err++; | |
800 | ||
801 | /* There's only one external trigger signal (which makes these | |
802 | * tests easier). Only one thing can use it. */ | |
803 | tmp = 0; | |
804 | if (cmd->start_src & TRIG_EXT) | |
805 | tmp++; | |
806 | if (cmd->scan_begin_src & TRIG_EXT) | |
807 | tmp++; | |
808 | if (cmd->stop_src & TRIG_EXT) | |
809 | tmp++; | |
810 | if (tmp > 1) | |
811 | err++; | |
812 | ||
813 | if (err) | |
814 | return 2; | |
815 | ||
816 | /* Step 3: make sure arguments are trivially compatible. */ | |
817 | ||
818 | switch (cmd->start_src) { | |
819 | case TRIG_INT: | |
820 | if (cmd->start_arg != 0) { | |
821 | cmd->start_arg = 0; | |
822 | err++; | |
823 | } | |
824 | break; | |
825 | case TRIG_EXT: | |
826 | /* Force to external trigger 0. */ | |
827 | if ((cmd->start_arg & ~CR_FLAGS_MASK) != 0) { | |
828 | cmd->start_arg = COMBINE(cmd->start_arg, 0, | |
829 | ~CR_FLAGS_MASK); | |
830 | err++; | |
831 | } | |
832 | /* The only flag allowed is CR_EDGE, which is ignored. */ | |
833 | if ((cmd->start_arg & CR_FLAGS_MASK & ~CR_EDGE) != 0) { | |
834 | cmd->start_arg = COMBINE(cmd->start_arg, 0, | |
835 | CR_FLAGS_MASK & ~CR_EDGE); | |
836 | err++; | |
837 | } | |
838 | break; | |
839 | } | |
840 | ||
841 | switch (cmd->scan_begin_src) { | |
842 | case TRIG_TIMER: | |
843 | if (cmd->scan_begin_arg > MAX_SCAN_PERIOD) { | |
844 | cmd->scan_begin_arg = MAX_SCAN_PERIOD; | |
845 | err++; | |
846 | } | |
847 | tmp = cmd->chanlist_len * CONVERT_PERIOD; | |
848 | if (tmp < MIN_SCAN_PERIOD) { | |
849 | tmp = MIN_SCAN_PERIOD; | |
850 | } | |
851 | if (cmd->scan_begin_arg < tmp) { | |
852 | cmd->scan_begin_arg = tmp; | |
853 | err++; | |
854 | } | |
855 | break; | |
856 | case TRIG_EXT: | |
857 | /* Force to external trigger 0. */ | |
858 | if ((cmd->scan_begin_arg & ~CR_FLAGS_MASK) != 0) { | |
859 | cmd->scan_begin_arg = COMBINE(cmd->scan_begin_arg, 0, | |
860 | ~CR_FLAGS_MASK); | |
861 | err++; | |
862 | } | |
863 | /* Only allow flags CR_EDGE and CR_INVERT. Ignore CR_EDGE. */ | |
864 | if ((cmd->scan_begin_arg & CR_FLAGS_MASK & | |
865 | ~(CR_EDGE | CR_INVERT)) != 0) { | |
866 | cmd->scan_begin_arg = COMBINE(cmd->scan_begin_arg, 0, | |
867 | CR_FLAGS_MASK & ~(CR_EDGE | CR_INVERT)); | |
868 | err++; | |
869 | } | |
870 | break; | |
871 | } | |
872 | ||
873 | /* cmd->convert_src == TRIG_NOW */ | |
874 | if (cmd->convert_arg != 0) { | |
875 | cmd->convert_arg = 0; | |
876 | err++; | |
877 | } | |
878 | ||
879 | /* cmd->scan_end_arg == TRIG_COUNT */ | |
880 | if (cmd->scan_end_arg != cmd->chanlist_len) { | |
881 | cmd->scan_end_arg = cmd->chanlist_len; | |
882 | err++; | |
883 | } | |
884 | ||
885 | switch (cmd->stop_src) { | |
886 | case TRIG_COUNT: | |
887 | /* Any count allowed. */ | |
888 | break; | |
889 | case TRIG_EXT: | |
890 | /* Force to external trigger 0. */ | |
891 | if ((cmd->stop_arg & ~CR_FLAGS_MASK) != 0) { | |
892 | cmd->stop_arg = COMBINE(cmd->stop_arg, 0, | |
893 | ~CR_FLAGS_MASK); | |
894 | err++; | |
895 | } | |
896 | /* The only flag allowed is CR_EDGE, which is ignored. */ | |
897 | if ((cmd->stop_arg & CR_FLAGS_MASK & ~CR_EDGE) != 0) { | |
898 | cmd->stop_arg = COMBINE(cmd->stop_arg, 0, | |
899 | CR_FLAGS_MASK & ~CR_EDGE); | |
900 | } | |
901 | break; | |
902 | case TRIG_NONE: | |
903 | if (cmd->stop_arg != 0) { | |
904 | cmd->stop_arg = 0; | |
905 | err++; | |
906 | } | |
907 | break; | |
908 | } | |
909 | ||
910 | if (err) | |
911 | return 3; | |
912 | ||
913 | /* Step 4: fix up any arguments. */ | |
914 | ||
915 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
916 | unsigned int div1, div2, round; | |
917 | int round_mode = cmd->flags & TRIG_ROUND_MASK; | |
918 | ||
919 | tmp = cmd->scan_begin_arg; | |
920 | /* Check whether to use a single timer. */ | |
921 | switch (round_mode) { | |
922 | case TRIG_ROUND_NEAREST: | |
923 | default: | |
924 | round = TIMEBASE_10MHZ / 2; | |
925 | break; | |
926 | case TRIG_ROUND_DOWN: | |
927 | round = 0; | |
928 | break; | |
929 | case TRIG_ROUND_UP: | |
930 | round = TIMEBASE_10MHZ - 1; | |
931 | break; | |
932 | } | |
933 | /* Be careful to avoid overflow! */ | |
934 | div2 = cmd->scan_begin_arg / TIMEBASE_10MHZ; | |
935 | div2 += (round + cmd->scan_begin_arg % TIMEBASE_10MHZ) / | |
936 | TIMEBASE_10MHZ; | |
937 | if (div2 <= 0x10000) { | |
938 | /* A single timer will suffice. */ | |
939 | if (div2 < 2) | |
940 | div2 = 2; | |
941 | cmd->scan_begin_arg = div2 * TIMEBASE_10MHZ; | |
942 | if (cmd->scan_begin_arg < div2 || | |
943 | cmd->scan_begin_arg < TIMEBASE_10MHZ) { | |
944 | /* Overflow! */ | |
945 | cmd->scan_begin_arg = MAX_SCAN_PERIOD; | |
946 | } | |
947 | } else { | |
948 | /* Use two timers. */ | |
949 | div1 = devpriv->cached_div1; | |
950 | div2 = devpriv->cached_div2; | |
951 | pci224_cascade_ns_to_timer(TIMEBASE_10MHZ, &div1, &div2, | |
952 | &cmd->scan_begin_arg, round_mode); | |
953 | devpriv->cached_div1 = div1; | |
954 | devpriv->cached_div2 = div2; | |
955 | } | |
956 | if (tmp != cmd->scan_begin_arg) { | |
957 | err++; | |
958 | } | |
959 | } | |
960 | ||
961 | if (err) | |
962 | return 4; | |
963 | ||
964 | /* Step 5: check channel list. */ | |
965 | ||
966 | if (cmd->chanlist && (cmd->chanlist_len > 0)) { | |
967 | unsigned int range; | |
968 | enum { range_err = 1, dupchan_err = 2, }; | |
969 | unsigned errors; | |
970 | unsigned int n; | |
971 | unsigned int ch; | |
972 | ||
973 | /* | |
974 | * Check all channels have the same range index. Don't care | |
975 | * about analogue reference, as we can't configure it. | |
976 | * | |
977 | * Check the list has no duplicate channels. | |
978 | */ | |
979 | range = CR_RANGE(cmd->chanlist[0]); | |
980 | errors = 0; | |
981 | tmp = 0; | |
982 | for (n = 0; n < cmd->chanlist_len; n++) { | |
983 | ch = CR_CHAN(cmd->chanlist[n]); | |
984 | if (tmp & (1U << ch)) { | |
985 | errors |= dupchan_err; | |
986 | } | |
987 | tmp |= (1U << ch); | |
988 | if (CR_RANGE(cmd->chanlist[n]) != range) { | |
989 | errors |= range_err; | |
990 | } | |
991 | } | |
992 | if (errors) { | |
993 | if (errors & dupchan_err) { | |
994 | DPRINTK("comedi%d: " DRIVER_NAME | |
995 | ": ao_cmdtest: " | |
996 | "entries in chanlist must contain no " | |
997 | "duplicate channels\n", dev->minor); | |
998 | } | |
999 | if (errors & range_err) { | |
1000 | DPRINTK("comedi%d: " DRIVER_NAME | |
1001 | ": ao_cmdtest: " | |
1002 | "entries in chanlist must all have " | |
1003 | "the same range index\n", dev->minor); | |
1004 | } | |
1005 | err++; | |
1006 | } | |
1007 | } | |
1008 | ||
1009 | if (err) | |
1010 | return 5; | |
1011 | ||
1012 | return 0; | |
1013 | } | |
1014 | ||
1015 | /* | |
1016 | * 'do_cmd' function for AO subdevice. | |
1017 | */ | |
1018 | static int pci224_ao_cmd(comedi_device * dev, comedi_subdevice * s) | |
1019 | { | |
1020 | comedi_cmd *cmd = &s->async->cmd; | |
1021 | int range; | |
1022 | unsigned int i, j; | |
1023 | unsigned int ch; | |
1024 | unsigned int rank; | |
1025 | unsigned long flags; | |
1026 | ||
1027 | /* Cannot handle null/empty chanlist. */ | |
1028 | if (cmd->chanlist == NULL || cmd->chanlist_len == 0) { | |
1029 | return -EINVAL; | |
1030 | } | |
1031 | ||
1032 | /* Determine which channels are enabled and their load order. */ | |
1033 | devpriv->ao_enab = 0; | |
1034 | ||
1035 | for (i = 0; i < cmd->chanlist_len; i++) { | |
1036 | ch = CR_CHAN(cmd->chanlist[i]); | |
1037 | devpriv->ao_enab |= 1U << ch; | |
1038 | rank = 0; | |
1039 | for (j = 0; j < cmd->chanlist_len; j++) { | |
1040 | if (CR_CHAN(cmd->chanlist[j]) < ch) { | |
1041 | rank++; | |
1042 | } | |
1043 | } | |
1044 | devpriv->ao_scan_order[rank] = i; | |
1045 | } | |
1046 | ||
1047 | /* Set enabled channels. */ | |
1048 | outw(devpriv->ao_enab, dev->iobase + PCI224_DACCEN); | |
1049 | ||
1050 | /* Determine range and polarity. All channels the same. */ | |
1051 | range = CR_RANGE(cmd->chanlist[0]); | |
1052 | ||
1053 | /* | |
1054 | * Set DAC range and polarity. | |
1055 | * Set DAC scan trigger source to 'none'. | |
1056 | * Set DAC FIFO interrupt trigger level to 'not half full'. | |
1057 | * Reset DAC FIFO. | |
1058 | * | |
1059 | * N.B. DAC FIFO interrupts are currently disabled. | |
1060 | */ | |
1061 | devpriv->daccon = COMBINE(devpriv->daccon, | |
1062 | (devpriv->hwrange[range] | PCI224_DACCON_TRIG_NONE | | |
1063 | PCI224_DACCON_FIFOINTR_NHALF), | |
1064 | (PCI224_DACCON_POLAR_MASK | PCI224_DACCON_VREF_MASK | | |
1065 | PCI224_DACCON_TRIG_MASK | PCI224_DACCON_FIFOINTR_MASK)); | |
1066 | outw(devpriv->daccon | PCI224_DACCON_FIFORESET, | |
1067 | dev->iobase + PCI224_DACCON); | |
1068 | ||
1069 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
1070 | unsigned int div1, div2, round; | |
1071 | unsigned int ns = cmd->scan_begin_arg; | |
1072 | int round_mode = cmd->flags & TRIG_ROUND_MASK; | |
1073 | ||
1074 | /* Check whether to use a single timer. */ | |
1075 | switch (round_mode) { | |
1076 | case TRIG_ROUND_NEAREST: | |
1077 | default: | |
1078 | round = TIMEBASE_10MHZ / 2; | |
1079 | break; | |
1080 | case TRIG_ROUND_DOWN: | |
1081 | round = 0; | |
1082 | break; | |
1083 | case TRIG_ROUND_UP: | |
1084 | round = TIMEBASE_10MHZ - 1; | |
1085 | break; | |
1086 | } | |
1087 | /* Be careful to avoid overflow! */ | |
1088 | div2 = cmd->scan_begin_arg / TIMEBASE_10MHZ; | |
1089 | div2 += (round + cmd->scan_begin_arg % TIMEBASE_10MHZ) / | |
1090 | TIMEBASE_10MHZ; | |
1091 | if (div2 <= 0x10000) { | |
1092 | /* A single timer will suffice. */ | |
1093 | if (div2 < 2) | |
1094 | div2 = 2; | |
1095 | div2 &= 0xffff; | |
1096 | div1 = 1; /* Flag that single timer to be used. */ | |
1097 | } else { | |
1098 | /* Use two timers. */ | |
1099 | div1 = devpriv->cached_div1; | |
1100 | div2 = devpriv->cached_div2; | |
1101 | pci224_cascade_ns_to_timer(TIMEBASE_10MHZ, &div1, &div2, | |
1102 | &ns, round_mode); | |
1103 | } | |
1104 | ||
1105 | /* | |
1106 | * The output of timer Z2-0 will be used as the scan trigger | |
1107 | * source. | |
1108 | */ | |
1109 | /* Make sure Z2-0 is gated on. */ | |
1110 | outb(GAT_CONFIG(0, GAT_VCC), | |
1111 | devpriv->iobase1 + PCI224_ZGAT_SCE); | |
1112 | if (div1 == 1) { | |
1113 | /* Not cascading. Z2-0 needs 10 MHz clock. */ | |
1114 | outb(CLK_CONFIG(0, CLK_10MHZ), | |
1115 | devpriv->iobase1 + PCI224_ZCLK_SCE); | |
1116 | } else { | |
1117 | /* Cascading with Z2-2. */ | |
1118 | /* Make sure Z2-2 is gated on. */ | |
1119 | outb(GAT_CONFIG(2, GAT_VCC), | |
1120 | devpriv->iobase1 + PCI224_ZGAT_SCE); | |
1121 | /* Z2-2 needs 10 MHz clock. */ | |
1122 | outb(CLK_CONFIG(2, CLK_10MHZ), | |
1123 | devpriv->iobase1 + PCI224_ZCLK_SCE); | |
1124 | /* Load Z2-2 mode (2) and counter (div1). */ | |
1125 | i8254_load(devpriv->iobase1 + PCI224_Z2_CT0, 0, | |
1126 | 2, div1, 2); | |
1127 | /* Z2-0 is clocked from Z2-2's output. */ | |
1128 | outb(CLK_CONFIG(0, CLK_OUTNM1), | |
1129 | devpriv->iobase1 + PCI224_ZCLK_SCE); | |
1130 | } | |
1131 | /* Load Z2-0 mode (2) and counter (div2). */ | |
1132 | i8254_load(devpriv->iobase1 + PCI224_Z2_CT0, 0, 0, div2, 2); | |
1133 | } | |
1134 | ||
1135 | /* | |
1136 | * Sort out end of acquisition. | |
1137 | */ | |
1138 | switch (cmd->stop_src) { | |
1139 | case TRIG_COUNT: | |
1140 | /* Fixed number of scans. */ | |
1141 | devpriv->ao_stop_continuous = 0; | |
1142 | devpriv->ao_stop_count = cmd->stop_arg; | |
1143 | break; | |
1144 | default: | |
1145 | /* Continuous scans. */ | |
1146 | devpriv->ao_stop_continuous = 1; | |
1147 | devpriv->ao_stop_count = 0; | |
1148 | break; | |
1149 | } | |
1150 | ||
1151 | /* | |
1152 | * Sort out start of acquisition. | |
1153 | */ | |
1154 | switch (cmd->start_src) { | |
1155 | case TRIG_INT: | |
1156 | comedi_spin_lock_irqsave(&devpriv->ao_spinlock, flags); | |
1157 | s->async->inttrig = &pci224_ao_inttrig_start; | |
1158 | comedi_spin_unlock_irqrestore(&devpriv->ao_spinlock, flags); | |
1159 | break; | |
1160 | case TRIG_EXT: | |
1161 | /* Enable external interrupt trigger to start acquisition. */ | |
1162 | comedi_spin_lock_irqsave(&devpriv->ao_spinlock, flags); | |
1163 | devpriv->intsce |= PCI224_INTR_EXT; | |
1164 | outb(devpriv->intsce, devpriv->iobase1 + PCI224_INT_SCE); | |
1165 | comedi_spin_unlock_irqrestore(&devpriv->ao_spinlock, flags); | |
1166 | break; | |
1167 | } | |
1168 | ||
1169 | return 0; | |
1170 | } | |
1171 | ||
1172 | /* | |
1173 | * 'cancel' function for AO subdevice. | |
1174 | */ | |
1175 | static int pci224_ao_cancel(comedi_device * dev, comedi_subdevice * s) | |
1176 | { | |
1177 | pci224_ao_stop(dev, s); | |
1178 | return 0; | |
1179 | } | |
1180 | ||
1181 | /* | |
1182 | * 'munge' data for AO command. | |
1183 | */ | |
1184 | static void | |
1185 | pci224_ao_munge(comedi_device * dev, comedi_subdevice * s, void *data, | |
1186 | unsigned int num_bytes, unsigned int chan_index) | |
1187 | { | |
1188 | comedi_async *async = s->async; | |
790c5541 | 1189 | short *array = data; |
ea1aeae4 IA |
1190 | unsigned int length = num_bytes / sizeof(*array); |
1191 | unsigned int offset; | |
1192 | unsigned int shift; | |
1193 | unsigned int i; | |
1194 | ||
1195 | /* The hardware expects 16-bit numbers. */ | |
1196 | shift = 16 - thisboard->ao_bits; | |
1197 | /* Channels will be all bipolar or all unipolar. */ | |
1198 | if ((devpriv->hwrange[CR_RANGE(async->cmd.chanlist[0])] & | |
1199 | PCI224_DACCON_POLAR_MASK) == PCI224_DACCON_POLAR_UNI) { | |
1200 | /* Unipolar */ | |
1201 | offset = 0; | |
1202 | } else { | |
1203 | /* Bipolar */ | |
1204 | offset = 32768; | |
1205 | } | |
1206 | /* Munge the data. */ | |
1207 | for (i = 0; i < length; i++) { | |
1208 | array[i] = (array[i] << shift) - offset; | |
1209 | } | |
1210 | } | |
1211 | ||
1212 | /* | |
1213 | * Interrupt handler. | |
1214 | */ | |
1215 | static irqreturn_t pci224_interrupt(int irq, void *d PT_REGS_ARG) | |
1216 | { | |
1217 | comedi_device *dev = d; | |
1218 | comedi_subdevice *s = &dev->subdevices[0]; | |
1219 | comedi_cmd *cmd; | |
1220 | unsigned char intstat, valid_intstat; | |
1221 | unsigned char curenab; | |
1222 | int retval = 0; | |
1223 | unsigned long flags; | |
1224 | ||
1225 | intstat = inb(devpriv->iobase1 + PCI224_INT_SCE) & 0x3F; | |
1226 | if (intstat) { | |
1227 | retval = 1; | |
1228 | comedi_spin_lock_irqsave(&devpriv->ao_spinlock, flags); | |
1229 | valid_intstat = devpriv->intsce & intstat; | |
1230 | /* Temporarily disable interrupt sources. */ | |
1231 | curenab = devpriv->intsce & ~intstat; | |
1232 | outb(curenab, devpriv->iobase1 + PCI224_INT_SCE); | |
1233 | devpriv->intr_running = 1; | |
1234 | devpriv->intr_cpuid = THISCPU; | |
1235 | comedi_spin_unlock_irqrestore(&devpriv->ao_spinlock, flags); | |
1236 | if (valid_intstat != 0) { | |
1237 | cmd = &s->async->cmd; | |
1238 | if (valid_intstat & PCI224_INTR_EXT) { | |
1239 | devpriv->intsce &= ~PCI224_INTR_EXT; | |
1240 | if (cmd->start_src == TRIG_EXT) { | |
1241 | pci224_ao_start(dev, s); | |
1242 | } else if (cmd->stop_src == TRIG_EXT) { | |
1243 | pci224_ao_stop(dev, s); | |
1244 | } | |
1245 | } | |
1246 | if (valid_intstat & PCI224_INTR_DAC) { | |
1247 | pci224_ao_handle_fifo(dev, s); | |
1248 | } | |
1249 | } | |
1250 | /* Reenable interrupt sources. */ | |
1251 | comedi_spin_lock_irqsave(&devpriv->ao_spinlock, flags); | |
1252 | if (curenab != devpriv->intsce) { | |
1253 | outb(devpriv->intsce, | |
1254 | devpriv->iobase1 + PCI224_INT_SCE); | |
1255 | } | |
1256 | devpriv->intr_running = 0; | |
1257 | comedi_spin_unlock_irqrestore(&devpriv->ao_spinlock, flags); | |
1258 | } | |
1259 | return IRQ_RETVAL(retval); | |
1260 | } | |
1261 | ||
1262 | /* | |
1263 | * This function looks for a PCI device matching the requested board name, | |
1264 | * bus and slot. | |
1265 | */ | |
1266 | static int | |
1267 | pci224_find_pci(comedi_device * dev, int bus, int slot, | |
1268 | struct pci_dev **pci_dev_p) | |
1269 | { | |
1270 | struct pci_dev *pci_dev = NULL; | |
1271 | ||
1272 | *pci_dev_p = NULL; | |
1273 | ||
1274 | /* Look for matching PCI device. */ | |
1275 | for (pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON, PCI_ANY_ID, NULL); | |
1276 | pci_dev != NULL; | |
1277 | pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON, PCI_ANY_ID, | |
1278 | pci_dev)) { | |
1279 | /* If bus/slot specified, check them. */ | |
1280 | if (bus || slot) { | |
1281 | if (bus != pci_dev->bus->number | |
1282 | || slot != PCI_SLOT(pci_dev->devfn)) | |
1283 | continue; | |
1284 | } | |
1285 | if (thisboard->model == any_model) { | |
1286 | /* Match any supported model. */ | |
1287 | int i; | |
1288 | ||
1289 | for (i = 0; i < ARRAY_SIZE(pci224_boards); i++) { | |
1290 | if (pci_dev->device == pci224_boards[i].devid) { | |
1291 | /* Change board_ptr to matched board. */ | |
1292 | dev->board_ptr = &pci224_boards[i]; | |
1293 | break; | |
1294 | } | |
1295 | } | |
1296 | if (i == ARRAY_SIZE(pci224_boards)) | |
1297 | continue; | |
1298 | } else { | |
1299 | /* Match specific model name. */ | |
1300 | if (thisboard->devid != pci_dev->device) | |
1301 | continue; | |
1302 | } | |
1303 | ||
1304 | /* Found a match. */ | |
1305 | *pci_dev_p = pci_dev; | |
1306 | return 0; | |
1307 | } | |
1308 | /* No match found. */ | |
1309 | if (bus || slot) { | |
1310 | printk(KERN_ERR "comedi%d: error! " | |
1311 | "no %s found at pci %02x:%02x!\n", | |
1312 | dev->minor, thisboard->name, bus, slot); | |
1313 | } else { | |
1314 | printk(KERN_ERR "comedi%d: error! no %s found!\n", | |
1315 | dev->minor, thisboard->name); | |
1316 | } | |
1317 | return -EIO; | |
1318 | } | |
1319 | ||
1320 | /* | |
1321 | * Attach is called by the Comedi core to configure the driver | |
1322 | * for a particular board. If you specified a board_name array | |
1323 | * in the driver structure, dev->board_ptr contains that | |
1324 | * address. | |
1325 | */ | |
1326 | static int pci224_attach(comedi_device * dev, comedi_devconfig * it) | |
1327 | { | |
1328 | comedi_subdevice *s; | |
1329 | struct pci_dev *pci_dev; | |
1330 | unsigned int irq; | |
1331 | int bus = 0, slot = 0; | |
1332 | unsigned n; | |
1333 | int ret; | |
1334 | ||
1335 | printk(KERN_DEBUG "comedi%d: %s: attach\n", dev->minor, DRIVER_NAME); | |
1336 | ||
1337 | bus = it->options[0]; | |
1338 | slot = it->options[1]; | |
1339 | if ((ret = alloc_private(dev, sizeof(pci224_private))) < 0) { | |
1340 | printk(KERN_ERR "comedi%d: error! out of memory!\n", | |
1341 | dev->minor); | |
1342 | return ret; | |
1343 | } | |
1344 | if ((ret = pci224_find_pci(dev, bus, slot, &pci_dev)) < 0) | |
1345 | return ret; | |
1346 | devpriv->pci_dev = pci_dev; | |
1347 | ||
1348 | if ((ret = comedi_pci_enable(pci_dev, DRIVER_NAME)) < 0) { | |
1349 | printk(KERN_ERR | |
1350 | "comedi%d: error! cannot enable PCI device " | |
1351 | "and request regions!\n", dev->minor); | |
1352 | return ret; | |
1353 | } | |
1354 | spin_lock_init(&devpriv->ao_spinlock); | |
1355 | ||
1356 | devpriv->iobase1 = pci_resource_start(pci_dev, 2); | |
1357 | dev->iobase = pci_resource_start(pci_dev, 3); | |
1358 | irq = pci_dev->irq; | |
1359 | ||
1360 | /* Allocate readback buffer for AO channels. */ | |
1361 | devpriv->ao_readback = kmalloc(sizeof(devpriv->ao_readback[0]) * | |
1362 | thisboard->ao_chans, GFP_KERNEL); | |
1363 | if (!devpriv->ao_readback) { | |
1364 | return -ENOMEM; | |
1365 | } | |
1366 | ||
1367 | /* Allocate buffer to hold values for AO channel scan. */ | |
1368 | devpriv->ao_scan_vals = kmalloc(sizeof(devpriv->ao_scan_vals[0]) * | |
1369 | thisboard->ao_chans, GFP_KERNEL); | |
1370 | if (!devpriv->ao_scan_vals) { | |
1371 | return -ENOMEM; | |
1372 | } | |
1373 | ||
1374 | /* Allocate buffer to hold AO channel scan order. */ | |
1375 | devpriv->ao_scan_order = kmalloc(sizeof(devpriv->ao_scan_order[0]) * | |
1376 | thisboard->ao_chans, GFP_KERNEL); | |
1377 | if (!devpriv->ao_scan_order) { | |
1378 | return -ENOMEM; | |
1379 | } | |
1380 | ||
1381 | /* Disable interrupt sources. */ | |
1382 | devpriv->intsce = 0; | |
1383 | outb(0, devpriv->iobase1 + PCI224_INT_SCE); | |
1384 | ||
1385 | /* Initialize the DAC hardware. */ | |
1386 | outw(PCI224_DACCON_GLOBALRESET, dev->iobase + PCI224_DACCON); | |
1387 | outw(0, dev->iobase + PCI224_DACCEN); | |
1388 | outw(0, dev->iobase + PCI224_FIFOSIZ); | |
1389 | devpriv->daccon = (PCI224_DACCON_TRIG_SW | PCI224_DACCON_POLAR_BI | | |
1390 | PCI224_DACCON_FIFOENAB | PCI224_DACCON_FIFOINTR_EMPTY); | |
1391 | outw(devpriv->daccon | PCI224_DACCON_FIFORESET, | |
1392 | dev->iobase + PCI224_DACCON); | |
1393 | ||
1394 | /* Allocate subdevices. There is only one! */ | |
1395 | if ((ret = alloc_subdevices(dev, 1)) < 0) { | |
1396 | printk(KERN_ERR "comedi%d: error! out of memory!\n", | |
1397 | dev->minor); | |
1398 | return ret; | |
1399 | } | |
1400 | ||
1401 | s = dev->subdevices + 0; | |
1402 | /* Analog output subdevice. */ | |
1403 | s->type = COMEDI_SUBD_AO; | |
1404 | s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_CMD_WRITE; | |
1405 | s->n_chan = thisboard->ao_chans; | |
1406 | s->maxdata = (1 << thisboard->ao_bits) - 1; | |
1407 | s->insn_write = &pci224_ao_insn_write; | |
1408 | s->insn_read = &pci224_ao_insn_read; | |
1409 | s->len_chanlist = s->n_chan; | |
1410 | ||
1411 | dev->write_subdev = s; | |
1412 | s->do_cmd = &pci224_ao_cmd; | |
1413 | s->do_cmdtest = &pci224_ao_cmdtest; | |
1414 | s->cancel = &pci224_ao_cancel; | |
1415 | s->munge = &pci224_ao_munge; | |
1416 | ||
1417 | /* Sort out channel range options. */ | |
1418 | if (thisboard->model == pci234_model) { | |
1419 | /* PCI234 range options. */ | |
1420 | const comedi_lrange **range_table_list; | |
1421 | ||
1422 | s->range_table_list = range_table_list = | |
1423 | kmalloc(sizeof(comedi_lrange *) * s->n_chan, | |
1424 | GFP_KERNEL); | |
1425 | if (!s->range_table_list) { | |
1426 | return -ENOMEM; | |
1427 | } | |
1428 | for (n = 2; n < 3 + s->n_chan; n++) { | |
1429 | if (it->options[n] < 0 || it->options[n] > 1) { | |
1430 | printk(KERN_WARNING "comedi%d: %s: warning! " | |
1431 | "bad options[%u]=%d\n", | |
1432 | dev->minor, DRIVER_NAME, n, | |
1433 | it->options[n]); | |
1434 | } | |
1435 | } | |
1436 | for (n = 0; n < s->n_chan; n++) { | |
1437 | if (n < COMEDI_NDEVCONFOPTS - 3 && | |
1438 | it->options[3 + n] == 1) { | |
1439 | if (it->options[2] == 1) { | |
1440 | range_table_list[n] = &range_pci234_ext; | |
1441 | } else { | |
1442 | range_table_list[n] = &range_bipolar5; | |
1443 | } | |
1444 | } else { | |
1445 | if (it->options[2] == 1) { | |
1446 | range_table_list[n] = | |
1447 | &range_pci234_ext2; | |
1448 | } else { | |
1449 | range_table_list[n] = &range_bipolar10; | |
1450 | } | |
1451 | } | |
1452 | } | |
1453 | devpriv->hwrange = hwrange_pci234; | |
1454 | } else { | |
1455 | /* PCI224 range options. */ | |
1456 | if (it->options[2] == 1) { | |
1457 | s->range_table = &range_pci224_external; | |
1458 | devpriv->hwrange = hwrange_pci224_external; | |
1459 | } else { | |
1460 | if (it->options[2] != 0) { | |
1461 | printk(KERN_WARNING "comedi%d: %s: warning! " | |
1462 | "bad options[2]=%d\n", | |
1463 | dev->minor, DRIVER_NAME, | |
1464 | it->options[2]); | |
1465 | } | |
1466 | s->range_table = &range_pci224_internal; | |
1467 | devpriv->hwrange = hwrange_pci224_internal; | |
1468 | } | |
1469 | } | |
1470 | ||
1471 | dev->board_name = thisboard->name; | |
1472 | ||
1473 | if (irq) { | |
1474 | ret = comedi_request_irq(irq, pci224_interrupt, IRQF_SHARED, | |
1475 | DRIVER_NAME, dev); | |
1476 | if (ret < 0) { | |
1477 | printk(KERN_ERR "comedi%d: error! " | |
1478 | "unable to allocate irq %u\n", dev->minor, irq); | |
1479 | return ret; | |
1480 | } else { | |
1481 | dev->irq = irq; | |
1482 | } | |
1483 | } | |
1484 | ||
1485 | printk(KERN_INFO "comedi%d: %s ", dev->minor, dev->board_name); | |
1486 | printk("(pci %s) ", pci_name(pci_dev)); | |
1487 | if (irq) { | |
1488 | printk("(irq %u%s) ", irq, (dev->irq ? "" : " UNAVAILABLE")); | |
1489 | } else { | |
1490 | printk("(no irq) "); | |
1491 | } | |
1492 | ||
1493 | printk("attached\n"); | |
1494 | ||
1495 | return 1; | |
1496 | } | |
1497 | ||
1498 | /* | |
1499 | * _detach is called to deconfigure a device. It should deallocate | |
1500 | * resources. | |
1501 | * This function is also called when _attach() fails, so it should be | |
1502 | * careful not to release resources that were not necessarily | |
1503 | * allocated by _attach(). dev->private and dev->subdevices are | |
1504 | * deallocated automatically by the core. | |
1505 | */ | |
1506 | static int pci224_detach(comedi_device * dev) | |
1507 | { | |
1508 | printk(KERN_DEBUG "comedi%d: %s: detach\n", dev->minor, DRIVER_NAME); | |
1509 | ||
1510 | if (dev->irq) { | |
1511 | comedi_free_irq(dev->irq, dev); | |
1512 | } | |
1513 | if (dev->subdevices) { | |
1514 | comedi_subdevice *s; | |
1515 | ||
1516 | s = dev->subdevices + 0; | |
1517 | /* AO subdevice */ | |
1518 | if (s->range_table_list) { | |
1519 | kfree(s->range_table_list); | |
1520 | } | |
1521 | } | |
1522 | if (devpriv) { | |
1523 | if (devpriv->ao_readback) { | |
1524 | kfree(devpriv->ao_readback); | |
1525 | } | |
1526 | if (devpriv->ao_scan_vals) { | |
1527 | kfree(devpriv->ao_scan_vals); | |
1528 | } | |
1529 | if (devpriv->ao_scan_order) { | |
1530 | kfree(devpriv->ao_scan_order); | |
1531 | } | |
1532 | if (devpriv->pci_dev) { | |
1533 | if (dev->iobase) { | |
1534 | comedi_pci_disable(devpriv->pci_dev); | |
1535 | } | |
1536 | pci_dev_put(devpriv->pci_dev); | |
1537 | } | |
1538 | } | |
1539 | if (dev->board_name) { | |
1540 | printk(KERN_INFO "comedi%d: %s removed\n", | |
1541 | dev->minor, dev->board_name); | |
1542 | } | |
1543 | ||
1544 | return 0; | |
1545 | } |