2 * comedi/drivers/pcl812.c
4 * Author: Michal Dobes <dobes@tesnet.cz>
6 * hardware driver for Advantech cards
7 * card: PCL-812, PCL-812PG, PCL-813, PCL-813B
8 * driver: pcl812, pcl812pg, pcl813, pcl813b
10 * card: ACL-8112DG, ACL-8112HG, ACL-8112PG, ACL-8113, ACL-8216
11 * driver: acl8112dg, acl8112hg, acl8112pg, acl8113, acl8216
12 * and for ICP DAS cards
13 * card: ISO-813, A-821PGH, A-821PGL, A-821PGL-NDA, A-822PGH, A-822PGL,
14 * driver: iso813, a821pgh, a-821pgl, a-821pglnda, a822pgh, a822pgl,
15 * card: A-823PGH, A-823PGL, A-826PG
16 * driver: a823pgh, a823pgl, a826pg
20 Description: Advantech PCL-812/PG, PCL-813/B,
21 ADLink ACL-8112DG/HG/PG, ACL-8113, ACL-8216,
22 ICP DAS A-821PGH/PGL/PGL-NDA, A-822PGH/PGL, A-823PGH/PGL, A-826PG,
24 Author: Michal Dobes <dobes@tesnet.cz>
25 Devices: [Advantech] PCL-812 (pcl812), PCL-812PG (pcl812pg),
26 PCL-813 (pcl813), PCL-813B (pcl813b), [ADLink] ACL-8112DG (acl8112dg),
27 ACL-8112HG (acl8112hg), ACL-8113 (acl-8113), ACL-8216 (acl8216),
28 [ICP] ISO-813 (iso813), A-821PGH (a821pgh), A-821PGL (a821pgl),
29 A-821PGL-NDA (a821pclnda), A-822PGH (a822pgh), A-822PGL (a822pgl),
30 A-823PGH (a823pgh), A-823PGL (a823pgl), A-826PG (a826pg)
31 Updated: Mon, 06 Aug 2007 12:03:15 +0100
32 Status: works (I hope. My board fire up under my hands
33 and I cann't test all features.)
35 This driver supports insn and cmd interfaces. Some boards support only insn
36 becouse their hardware don't allow more (PCL-813/B, ACL-8113, ISO-813).
37 Data transfer over DMA is supported only when you measure only one
38 channel, this is too hardware limitation of these boards.
42 [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7; 10, 11, 12, 14, 15)
43 [2] - DMA (0=disable, 1, 3)
44 [3] - 0=trigger source is internal 8253 with 2MHz clock
45 1=trigger source is external
46 [4] - 0=A/D input range is +/-10V
47 1=A/D input range is +/-5V
48 2=A/D input range is +/-2.5V
49 3=A/D input range is +/-1.25V
50 4=A/D input range is +/-0.625V
51 5=A/D input range is +/-0.3125V
52 [5] - 0=D/A outputs 0-5V (internal reference -5V)
53 1=D/A outputs 0-10V (internal reference -10V)
54 2=D/A outputs unknown (external reference)
56 Options for PCL-812PG, ACL-8112PG:
58 [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7; 10, 11, 12, 14, 15)
59 [2] - DMA (0=disable, 1, 3)
60 [3] - 0=trigger source is internal 8253 with 2MHz clock
61 1=trigger source is external
62 [4] - 0=A/D have max +/-5V input
63 1=A/D have max +/-10V input
64 [5] - 0=D/A outputs 0-5V (internal reference -5V)
65 1=D/A outputs 0-10V (internal reference -10V)
66 2=D/A outputs unknown (external reference)
68 Options for ACL-8112DG/HG, A-822PGL/PGH, A-823PGL/PGH, ACL-8216, A-826PG:
70 [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7; 10, 11, 12, 14, 15)
71 [2] - DMA (0=disable, 1, 3)
72 [3] - 0=trigger source is internal 8253 with 2MHz clock
73 1=trigger source is external
74 [4] - 0=A/D channels are S.E.
75 1=A/D channels are DIFF
76 [5] - 0=D/A outputs 0-5V (internal reference -5V)
77 1=D/A outputs 0-10V (internal reference -10V)
78 2=D/A outputs unknown (external reference)
80 Options for A-821PGL/PGH:
82 [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7)
83 [2] - 0=A/D channels are S.E.
84 1=A/D channels are DIFF
85 [3] - 0=D/A output 0-5V (internal reference -5V)
86 1=D/A output 0-10V (internal reference -10V)
88 Options for A-821PGL-NDA:
90 [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7)
91 [2] - 0=A/D channels are S.E.
92 1=A/D channels are DIFF
99 [1] - 0= bipolar inputs
102 Options for ACL-8113, ISO-813:
104 [1] - 0= 10V bipolar inputs
105 1= 10V unipolar inputs
106 2= 20V bipolar inputs
107 3= 20V unipolar inputs
110 #include <linux/interrupt.h>
111 #include <linux/gfp.h>
112 #include "../comedidev.h"
114 #include <linux/delay.h>
115 #include <linux/ioport.h>
120 #undef PCL812_EXTDEBUG /* if this is defined then a lot of messages is printed */
122 /* hardware types of the cards */
123 #define boardPCL812PG 0 /* and ACL-8112PG */
124 #define boardPCL813B 1
125 #define boardPCL812 2
126 #define boardPCL813 3
127 #define boardISO813 5
128 #define boardACL8113 6
129 #define boardACL8112 7 /* ACL-8112DG/HG, A-822PGL/PGH, A-823PGL/PGH */
130 #define boardACL8216 8 /* and ICP DAS A-826PG */
131 #define boardA821 9 /* PGH, PGL, PGL/NDA versions */
133 #define PCLx1x_IORANGE 16
135 #define PCL812_CTR0 0
136 #define PCL812_CTR1 1
137 #define PCL812_CTR2 2
138 #define PCL812_CTRCTL 3
139 #define PCL812_AD_LO 4
140 #define PCL812_DA1_LO 4
141 #define PCL812_AD_HI 5
142 #define PCL812_DA1_HI 5
143 #define PCL812_DA2_LO 6
144 #define PCL812_DI_LO 6
145 #define PCL812_DA2_HI 7
146 #define PCL812_DI_HI 7
147 #define PCL812_CLRINT 8
148 #define PCL812_GAIN 9
149 #define PCL812_MUX 10
150 #define PCL812_MODE 11
151 #define PCL812_CNTENABLE 10
152 #define PCL812_SOFTTRIG 12
153 #define PCL812_DO_LO 13
154 #define PCL812_DO_HI 14
156 #define PCL812_DRDY 0x10 /* =0 data ready */
158 #define ACL8216_STATUS 8 /* 5. bit signalize data ready */
160 #define ACL8216_DRDY 0x20 /* =0 data ready */
162 #define MAX_CHANLIST_LEN 256 /* length of scan list */
164 static const struct comedi_lrange range_pcl812pg_ai
= { 5, {
173 static const struct comedi_lrange range_pcl812pg2_ai
= { 5, {
182 static const struct comedi_lrange range812_bipolar1_25
= { 1, {
187 static const struct comedi_lrange range812_bipolar0_625
= { 1, {
193 static const struct comedi_lrange range812_bipolar0_3125
= { 1, {
199 static const struct comedi_lrange range_pcl813b_ai
= { 4, {
207 static const struct comedi_lrange range_pcl813b2_ai
= { 4, {
215 static const struct comedi_lrange range_iso813_1_ai
= { 5, {
224 static const struct comedi_lrange range_iso813_1_2_ai
= { 5, {
233 static const struct comedi_lrange range_iso813_2_ai
= { 4, {
241 static const struct comedi_lrange range_iso813_2_2_ai
= { 4, {
249 static const struct comedi_lrange range_acl8113_1_ai
= { 4, {
257 static const struct comedi_lrange range_acl8113_1_2_ai
= { 4, {
265 static const struct comedi_lrange range_acl8113_2_ai
= { 3, {
272 static const struct comedi_lrange range_acl8113_2_2_ai
= { 3, {
279 static const struct comedi_lrange range_acl8112dg_ai
= { 9, {
292 static const struct comedi_lrange range_acl8112hg_ai
= { 12, {
308 static const struct comedi_lrange range_a821pgh_ai
= { 4, {
316 static int pcl812_attach(struct comedi_device
*dev
,
317 struct comedi_devconfig
*it
);
318 static int pcl812_detach(struct comedi_device
*dev
);
320 struct pcl812_board
{
322 const char *name
; /* board name */
323 int board_type
; /* type of this board */
324 int n_aichan
; /* num of AI chans in S.E. */
325 int n_aichan_diff
; /* DIFF num of chans */
326 int n_aochan
; /* num of DA chans */
327 int n_dichan
; /* DI and DO chans */
329 int ai_maxdata
; /* AI resolution */
330 unsigned int ai_ns_min
; /* max sample speed of card v ns */
331 unsigned int i8254_osc_base
; /* clock base */
332 const struct comedi_lrange
*rangelist_ai
; /* rangelist for A/D */
333 const struct comedi_lrange
*rangelist_ao
; /* rangelist for D/A */
334 unsigned int IRQbits
; /* allowed IRQ */
335 unsigned char DMAbits
; /* allowed DMA chans */
336 unsigned char io_range
; /* iorange for this board */
337 unsigned char haveMPC508
; /* 1=board use MPC508A multiplexor */
340 static const struct pcl812_board boardtypes
[] = {
341 {"pcl812", boardPCL812
, 16, 0, 2, 16, 16, 0x0fff,
342 33000, 500, &range_bipolar10
, &range_unipolar5
,
343 0xdcfc, 0x0a, PCLx1x_IORANGE
, 0},
344 {"pcl812pg", boardPCL812PG
, 16, 0, 2, 16, 16, 0x0fff,
345 33000, 500, &range_pcl812pg_ai
, &range_unipolar5
,
346 0xdcfc, 0x0a, PCLx1x_IORANGE
, 0},
347 {"acl8112pg", boardPCL812PG
, 16, 0, 2, 16, 16, 0x0fff,
348 10000, 500, &range_pcl812pg_ai
, &range_unipolar5
,
349 0xdcfc, 0x0a, PCLx1x_IORANGE
, 0},
350 {"acl8112dg", boardACL8112
, 16, 8, 2, 16, 16, 0x0fff,
351 10000, 500, &range_acl8112dg_ai
, &range_unipolar5
,
352 0xdcfc, 0x0a, PCLx1x_IORANGE
, 1},
353 {"acl8112hg", boardACL8112
, 16, 8, 2, 16, 16, 0x0fff,
354 10000, 500, &range_acl8112hg_ai
, &range_unipolar5
,
355 0xdcfc, 0x0a, PCLx1x_IORANGE
, 1},
356 {"a821pgl", boardA821
, 16, 8, 1, 16, 16, 0x0fff,
357 10000, 500, &range_pcl813b_ai
, &range_unipolar5
,
358 0x000c, 0x00, PCLx1x_IORANGE
, 0},
359 {"a821pglnda", boardA821
, 16, 8, 0, 0, 0, 0x0fff,
360 10000, 500, &range_pcl813b_ai
, NULL
,
361 0x000c, 0x00, PCLx1x_IORANGE
, 0},
362 {"a821pgh", boardA821
, 16, 8, 1, 16, 16, 0x0fff,
363 10000, 500, &range_a821pgh_ai
, &range_unipolar5
,
364 0x000c, 0x00, PCLx1x_IORANGE
, 0},
365 {"a822pgl", boardACL8112
, 16, 8, 2, 16, 16, 0x0fff,
366 10000, 500, &range_acl8112dg_ai
, &range_unipolar5
,
367 0xdcfc, 0x0a, PCLx1x_IORANGE
, 0},
368 {"a822pgh", boardACL8112
, 16, 8, 2, 16, 16, 0x0fff,
369 10000, 500, &range_acl8112hg_ai
, &range_unipolar5
,
370 0xdcfc, 0x0a, PCLx1x_IORANGE
, 0},
371 {"a823pgl", boardACL8112
, 16, 8, 2, 16, 16, 0x0fff,
372 8000, 500, &range_acl8112dg_ai
, &range_unipolar5
,
373 0xdcfc, 0x0a, PCLx1x_IORANGE
, 0},
374 {"a823pgh", boardACL8112
, 16, 8, 2, 16, 16, 0x0fff,
375 8000, 500, &range_acl8112hg_ai
, &range_unipolar5
,
376 0xdcfc, 0x0a, PCLx1x_IORANGE
, 0},
377 {"pcl813", boardPCL813
, 32, 0, 0, 0, 0, 0x0fff,
378 0, 0, &range_pcl813b_ai
, NULL
,
379 0x0000, 0x00, PCLx1x_IORANGE
, 0},
380 {"pcl813b", boardPCL813B
, 32, 0, 0, 0, 0, 0x0fff,
381 0, 0, &range_pcl813b_ai
, NULL
,
382 0x0000, 0x00, PCLx1x_IORANGE
, 0},
383 {"acl8113", boardACL8113
, 32, 0, 0, 0, 0, 0x0fff,
384 0, 0, &range_acl8113_1_ai
, NULL
,
385 0x0000, 0x00, PCLx1x_IORANGE
, 0},
386 {"iso813", boardISO813
, 32, 0, 0, 0, 0, 0x0fff,
387 0, 0, &range_iso813_1_ai
, NULL
,
388 0x0000, 0x00, PCLx1x_IORANGE
, 0},
389 {"acl8216", boardACL8216
, 16, 8, 2, 16, 16, 0xffff,
390 10000, 500, &range_pcl813b2_ai
, &range_unipolar5
,
391 0xdcfc, 0x0a, PCLx1x_IORANGE
, 1},
392 {"a826pg", boardACL8216
, 16, 8, 2, 16, 16, 0xffff,
393 10000, 500, &range_pcl813b2_ai
, &range_unipolar5
,
394 0xdcfc, 0x0a, PCLx1x_IORANGE
, 0},
397 #define n_boardtypes (sizeof(boardtypes)/sizeof(struct pcl812_board))
398 #define this_board ((const struct pcl812_board *)dev->board_ptr)
400 static struct comedi_driver driver_pcl812
= {
401 .driver_name
= "pcl812",
402 .module
= THIS_MODULE
,
403 .attach
= pcl812_attach
,
404 .detach
= pcl812_detach
,
405 .board_name
= &boardtypes
[0].name
,
406 .num_names
= n_boardtypes
,
407 .offset
= sizeof(struct pcl812_board
),
410 COMEDI_INITCLEANUP(driver_pcl812
);
412 struct pcl812_private
{
414 unsigned char valid
; /* =1 device is OK */
415 unsigned char dma
; /* >0 use dma ( usedDMA channel) */
416 unsigned char use_diff
; /* =1 diff inputs */
417 unsigned char use_MPC
; /* 1=board uses MPC508A multiplexor */
418 unsigned char use_ext_trg
; /* 1=board uses external trigger */
419 unsigned char range_correction
; /* =1 we must add 1 to range number */
420 unsigned char old_chan_reg
; /* lastly used chan/gain pair */
421 unsigned char old_gain_reg
;
422 unsigned char mode_reg_int
; /* there is stored INT number for some card */
423 unsigned char ai_neverending
; /* =1 we do unlimited AI */
424 unsigned char ai_eos
; /* 1=EOS wake up */
425 unsigned char ai_dma
; /* =1 we use DMA */
426 unsigned int ai_poll_ptr
; /* how many sampes transfer poll */
427 unsigned int ai_scans
; /* len of scanlist */
428 unsigned int ai_act_scan
; /* how many scans we finished */
429 unsigned int ai_chanlist
[MAX_CHANLIST_LEN
]; /* our copy of channel/range list */
430 unsigned int ai_n_chan
; /* how many channels is measured */
431 unsigned int ai_flags
; /* flaglist */
432 unsigned int ai_data_len
; /* len of data buffer */
433 short *ai_data
; /* data buffer */
434 unsigned int ai_is16b
; /* =1 we have 16 bit card */
435 unsigned long dmabuf
[2]; /* PTR to DMA buf */
436 unsigned int dmapages
[2]; /* how many pages we have allocated */
437 unsigned int hwdmaptr
[2]; /* HW PTR to DMA buf */
438 unsigned int hwdmasize
[2]; /* DMA buf size in bytes */
439 unsigned int dmabytestomove
[2]; /* how many bytes DMA transfer */
440 int next_dma_buf
; /* which buffer is next to use */
441 unsigned int dma_runs_to_end
; /* how many times we must switch DMA buffers */
442 unsigned int last_dma_run
; /* how many bytes to transfer on last DMA buffer */
443 unsigned int max_812_ai_mode0_rangewait
; /* setling time for gain */
444 unsigned int ao_readback
[2]; /* data for AO readback */
447 #define devpriv ((struct pcl812_private *)dev->private)
450 ==============================================================================
452 static void start_pacer(struct comedi_device
*dev
, int mode
,
453 unsigned int divisor1
, unsigned int divisor2
);
454 static void setup_range_channel(struct comedi_device
*dev
,
455 struct comedi_subdevice
*s
,
456 unsigned int rangechan
, char wait
);
457 static int pcl812_ai_cancel(struct comedi_device
*dev
,
458 struct comedi_subdevice
*s
);
460 ==============================================================================
462 static int pcl812_ai_insn_read(struct comedi_device
*dev
,
463 struct comedi_subdevice
*s
,
464 struct comedi_insn
*insn
, unsigned int *data
)
469 outb(devpriv
->mode_reg_int
| 1, dev
->iobase
+ PCL812_MODE
); /* select software trigger */
470 setup_range_channel(dev
, s
, insn
->chanspec
, 1); /* select channel and renge */
471 for (n
= 0; n
< insn
->n
; n
++) {
472 outb(255, dev
->iobase
+ PCL812_SOFTTRIG
); /* start conversion */
474 timeout
= 50; /* wait max 50us, it must finish under 33us */
476 hi
= inb(dev
->iobase
+ PCL812_AD_HI
);
477 if (!(hi
& PCL812_DRDY
))
482 ("comedi%d: pcl812: (%s at 0x%lx) A/D insn read timeout\n",
483 dev
->minor
, dev
->board_name
, dev
->iobase
);
484 outb(devpriv
->mode_reg_int
| 0, dev
->iobase
+ PCL812_MODE
);
488 data
[n
] = ((hi
& 0xf) << 8) | inb(dev
->iobase
+ PCL812_AD_LO
);
490 outb(devpriv
->mode_reg_int
| 0, dev
->iobase
+ PCL812_MODE
);
495 ==============================================================================
497 static int acl8216_ai_insn_read(struct comedi_device
*dev
,
498 struct comedi_subdevice
*s
,
499 struct comedi_insn
*insn
, unsigned int *data
)
504 outb(1, dev
->iobase
+ PCL812_MODE
); /* select software trigger */
505 setup_range_channel(dev
, s
, insn
->chanspec
, 1); /* select channel and renge */
506 for (n
= 0; n
< insn
->n
; n
++) {
507 outb(255, dev
->iobase
+ PCL812_SOFTTRIG
); /* start conversion */
509 timeout
= 50; /* wait max 50us, it must finish under 33us */
511 if (!(inb(dev
->iobase
+ ACL8216_STATUS
) & ACL8216_DRDY
))
516 ("comedi%d: pcl812: (%s at 0x%lx) A/D insn read timeout\n",
517 dev
->minor
, dev
->board_name
, dev
->iobase
);
518 outb(0, dev
->iobase
+ PCL812_MODE
);
524 PCL812_AD_HI
) << 8) | inb(dev
->iobase
+ PCL812_AD_LO
);
526 outb(0, dev
->iobase
+ PCL812_MODE
);
531 ==============================================================================
533 static int pcl812_ao_insn_write(struct comedi_device
*dev
,
534 struct comedi_subdevice
*s
,
535 struct comedi_insn
*insn
, unsigned int *data
)
537 int chan
= CR_CHAN(insn
->chanspec
);
540 for (i
= 0; i
< insn
->n
; i
++) {
541 outb((data
[i
] & 0xff),
542 dev
->iobase
+ (chan
? PCL812_DA2_LO
: PCL812_DA1_LO
));
543 outb((data
[i
] >> 8) & 0x0f,
544 dev
->iobase
+ (chan
? PCL812_DA2_HI
: PCL812_DA1_HI
));
545 devpriv
->ao_readback
[chan
] = data
[i
];
552 ==============================================================================
554 static int pcl812_ao_insn_read(struct comedi_device
*dev
,
555 struct comedi_subdevice
*s
,
556 struct comedi_insn
*insn
, unsigned int *data
)
558 int chan
= CR_CHAN(insn
->chanspec
);
561 for (i
= 0; i
< insn
->n
; i
++) {
562 data
[i
] = devpriv
->ao_readback
[chan
];
569 ==============================================================================
571 static int pcl812_di_insn_bits(struct comedi_device
*dev
,
572 struct comedi_subdevice
*s
,
573 struct comedi_insn
*insn
, unsigned int *data
)
578 data
[1] = inb(dev
->iobase
+ PCL812_DI_LO
);
579 data
[1] |= inb(dev
->iobase
+ PCL812_DI_HI
) << 8;
585 ==============================================================================
587 static int pcl812_do_insn_bits(struct comedi_device
*dev
,
588 struct comedi_subdevice
*s
,
589 struct comedi_insn
*insn
, unsigned int *data
)
595 s
->state
&= ~data
[0];
596 s
->state
|= data
[0] & data
[1];
597 outb(s
->state
& 0xff, dev
->iobase
+ PCL812_DO_LO
);
598 outb((s
->state
>> 8), dev
->iobase
+ PCL812_DO_HI
);
605 #ifdef PCL812_EXTDEBUG
607 ==============================================================================
609 static void pcl812_cmdtest_out(int e
, struct comedi_cmd
*cmd
)
611 printk("pcl812 e=%d startsrc=%x scansrc=%x convsrc=%x\n", e
,
612 cmd
->start_src
, cmd
->scan_begin_src
, cmd
->convert_src
);
613 printk("pcl812 e=%d startarg=%d scanarg=%d convarg=%d\n", e
,
614 cmd
->start_arg
, cmd
->scan_begin_arg
, cmd
->convert_arg
);
615 printk("pcl812 e=%d stopsrc=%x scanend=%x\n", e
, cmd
->stop_src
,
617 printk("pcl812 e=%d stoparg=%d scanendarg=%d chanlistlen=%d\n", e
,
618 cmd
->stop_arg
, cmd
->scan_end_arg
, cmd
->chanlist_len
);
623 ==============================================================================
625 static int pcl812_ai_cmdtest(struct comedi_device
*dev
,
626 struct comedi_subdevice
*s
, struct comedi_cmd
*cmd
)
629 int tmp
, divisor1
, divisor2
;
631 #ifdef PCL812_EXTDEBUG
632 printk("pcl812 EDBG: BGN: pcl812_ai_cmdtest(...)\n");
633 pcl812_cmdtest_out(-1, cmd
);
635 /* step 1: make sure trigger sources are trivially valid */
637 tmp
= cmd
->start_src
;
638 cmd
->start_src
&= TRIG_NOW
;
639 if (!cmd
->start_src
|| tmp
!= cmd
->start_src
)
642 tmp
= cmd
->scan_begin_src
;
643 cmd
->scan_begin_src
&= TRIG_FOLLOW
;
644 if (!cmd
->scan_begin_src
|| tmp
!= cmd
->scan_begin_src
)
647 tmp
= cmd
->convert_src
;
648 if (devpriv
->use_ext_trg
) {
649 cmd
->convert_src
&= TRIG_EXT
;
651 cmd
->convert_src
&= TRIG_TIMER
;
653 if (!cmd
->convert_src
|| tmp
!= cmd
->convert_src
)
656 tmp
= cmd
->scan_end_src
;
657 cmd
->scan_end_src
&= TRIG_COUNT
;
658 if (!cmd
->scan_end_src
|| tmp
!= cmd
->scan_end_src
)
662 cmd
->stop_src
&= TRIG_COUNT
| TRIG_NONE
;
663 if (!cmd
->stop_src
|| tmp
!= cmd
->stop_src
)
667 #ifdef PCL812_EXTDEBUG
668 pcl812_cmdtest_out(1, cmd
);
670 ("pcl812 EDBG: BGN: pcl812_ai_cmdtest(...) err=%d ret=1\n",
676 /* step 2: make sure trigger sources are unique and mutually compatible */
678 if (cmd
->start_src
!= TRIG_NOW
) {
679 cmd
->start_src
= TRIG_NOW
;
683 if (cmd
->scan_begin_src
!= TRIG_FOLLOW
) {
684 cmd
->scan_begin_src
= TRIG_FOLLOW
;
688 if (devpriv
->use_ext_trg
) {
689 if (cmd
->convert_src
!= TRIG_EXT
) {
690 cmd
->convert_src
= TRIG_EXT
;
694 if (cmd
->convert_src
!= TRIG_TIMER
) {
695 cmd
->convert_src
= TRIG_TIMER
;
700 if (cmd
->scan_end_src
!= TRIG_COUNT
) {
701 cmd
->scan_end_src
= TRIG_COUNT
;
705 if (cmd
->stop_src
!= TRIG_NONE
&& cmd
->stop_src
!= TRIG_COUNT
)
709 #ifdef PCL812_EXTDEBUG
710 pcl812_cmdtest_out(2, cmd
);
712 ("pcl812 EDBG: BGN: pcl812_ai_cmdtest(...) err=%d ret=2\n",
718 /* step 3: make sure arguments are trivially compatible */
720 if (cmd
->start_arg
!= 0) {
725 if (cmd
->scan_begin_arg
!= 0) {
726 cmd
->scan_begin_arg
= 0;
730 if (cmd
->convert_src
== TRIG_TIMER
) {
731 if (cmd
->convert_arg
< this_board
->ai_ns_min
) {
732 cmd
->convert_arg
= this_board
->ai_ns_min
;
735 } else { /* TRIG_EXT */
736 if (cmd
->convert_arg
!= 0) {
737 cmd
->convert_arg
= 0;
742 if (!cmd
->chanlist_len
) {
743 cmd
->chanlist_len
= 1;
746 if (cmd
->chanlist_len
> MAX_CHANLIST_LEN
) {
747 cmd
->chanlist_len
= this_board
->n_aichan
;
750 if (cmd
->scan_end_arg
!= cmd
->chanlist_len
) {
751 cmd
->scan_end_arg
= cmd
->chanlist_len
;
754 if (cmd
->stop_src
== TRIG_COUNT
) {
755 if (!cmd
->stop_arg
) {
759 } else { /* TRIG_NONE */
760 if (cmd
->stop_arg
!= 0) {
767 #ifdef PCL812_EXTDEBUG
768 pcl812_cmdtest_out(3, cmd
);
770 ("pcl812 EDBG: BGN: pcl812_ai_cmdtest(...) err=%d ret=3\n",
776 /* step 4: fix up any arguments */
778 if (cmd
->convert_src
== TRIG_TIMER
) {
779 tmp
= cmd
->convert_arg
;
780 i8253_cascade_ns_to_timer(this_board
->i8254_osc_base
, &divisor1
,
781 &divisor2
, &cmd
->convert_arg
,
782 cmd
->flags
& TRIG_ROUND_MASK
);
783 if (cmd
->convert_arg
< this_board
->ai_ns_min
)
784 cmd
->convert_arg
= this_board
->ai_ns_min
;
785 if (tmp
!= cmd
->convert_arg
)
790 #ifdef PCL812_EXTDEBUG
792 ("pcl812 EDBG: BGN: pcl812_ai_cmdtest(...) err=%d ret=4\n",
802 ==============================================================================
804 static int pcl812_ai_cmd(struct comedi_device
*dev
, struct comedi_subdevice
*s
)
806 unsigned int divisor1
= 0, divisor2
= 0, i
, dma_flags
, bytes
;
807 struct comedi_cmd
*cmd
= &s
->async
->cmd
;
809 #ifdef PCL812_EXTDEBUG
810 printk("pcl812 EDBG: BGN: pcl812_ai_cmd(...)\n");
813 if (cmd
->start_src
!= TRIG_NOW
)
815 if (cmd
->scan_begin_src
!= TRIG_FOLLOW
)
817 if (devpriv
->use_ext_trg
) {
818 if (cmd
->convert_src
!= TRIG_EXT
)
821 if (cmd
->convert_src
!= TRIG_TIMER
)
824 if (cmd
->scan_end_src
!= TRIG_COUNT
)
826 if (cmd
->scan_end_arg
!= cmd
->chanlist_len
)
828 if (cmd
->chanlist_len
> MAX_CHANLIST_LEN
)
831 if (cmd
->convert_src
== TRIG_TIMER
) {
832 if (cmd
->convert_arg
< this_board
->ai_ns_min
)
833 cmd
->convert_arg
= this_board
->ai_ns_min
;
834 i8253_cascade_ns_to_timer(this_board
->i8254_osc_base
,
835 &divisor1
, &divisor2
,
837 cmd
->flags
& TRIG_ROUND_MASK
);
840 start_pacer(dev
, -1, 0, 0); /* stop pacer */
842 devpriv
->ai_n_chan
= cmd
->chanlist_len
;
843 memcpy(devpriv
->ai_chanlist
, cmd
->chanlist
,
844 sizeof(unsigned int) * cmd
->scan_end_arg
);
845 setup_range_channel(dev
, s
, devpriv
->ai_chanlist
[0], 1); /* select first channel and range */
847 if (devpriv
->dma
) { /* check if we can use DMA transfer */
849 for (i
= 1; i
< devpriv
->ai_n_chan
; i
++)
850 if (devpriv
->ai_chanlist
[0] != devpriv
->ai_chanlist
[i
]) {
851 devpriv
->ai_dma
= 0; /* we cann't use DMA :-( */
857 devpriv
->ai_flags
= cmd
->flags
;
858 devpriv
->ai_data_len
= s
->async
->prealloc_bufsz
;
859 devpriv
->ai_data
= s
->async
->prealloc_buf
;
860 if (cmd
->stop_src
== TRIG_COUNT
) {
861 devpriv
->ai_scans
= cmd
->stop_arg
;
862 devpriv
->ai_neverending
= 0;
864 devpriv
->ai_scans
= 0;
865 devpriv
->ai_neverending
= 1;
868 devpriv
->ai_act_scan
= 0;
869 devpriv
->ai_poll_ptr
= 0;
870 s
->async
->cur_chan
= 0;
872 if ((devpriv
->ai_flags
& TRIG_WAKE_EOS
)) { /* don't we want wake up every scan? */
874 if (devpriv
->ai_n_chan
== 1)
875 devpriv
->ai_dma
= 0; /* DMA is useless for this situation */
878 if (devpriv
->ai_dma
) {
879 if (devpriv
->ai_eos
) { /* we use EOS, so adapt DMA buffer to one scan */
880 devpriv
->dmabytestomove
[0] =
881 devpriv
->ai_n_chan
* sizeof(short);
882 devpriv
->dmabytestomove
[1] =
883 devpriv
->ai_n_chan
* sizeof(short);
884 devpriv
->dma_runs_to_end
= 1;
886 devpriv
->dmabytestomove
[0] = devpriv
->hwdmasize
[0];
887 devpriv
->dmabytestomove
[1] = devpriv
->hwdmasize
[1];
888 if (devpriv
->ai_data_len
< devpriv
->hwdmasize
[0])
889 devpriv
->dmabytestomove
[0] =
890 devpriv
->ai_data_len
;
891 if (devpriv
->ai_data_len
< devpriv
->hwdmasize
[1])
892 devpriv
->dmabytestomove
[1] =
893 devpriv
->ai_data_len
;
894 if (devpriv
->ai_neverending
) {
895 devpriv
->dma_runs_to_end
= 1;
897 bytes
= devpriv
->ai_n_chan
* devpriv
->ai_scans
* sizeof(short); /* how many samples we must transfer? */
898 devpriv
->dma_runs_to_end
= bytes
/ devpriv
->dmabytestomove
[0]; /* how many DMA pages we must fill */
899 devpriv
->last_dma_run
= bytes
% devpriv
->dmabytestomove
[0]; /* on last dma transfer must be moved */
900 if (devpriv
->dma_runs_to_end
== 0)
901 devpriv
->dmabytestomove
[0] =
902 devpriv
->last_dma_run
;
903 devpriv
->dma_runs_to_end
--;
906 if (devpriv
->dmabytestomove
[0] > devpriv
->hwdmasize
[0]) {
907 devpriv
->dmabytestomove
[0] = devpriv
->hwdmasize
[0];
910 if (devpriv
->dmabytestomove
[1] > devpriv
->hwdmasize
[1]) {
911 devpriv
->dmabytestomove
[1] = devpriv
->hwdmasize
[1];
914 devpriv
->next_dma_buf
= 0;
915 set_dma_mode(devpriv
->dma
, DMA_MODE_READ
);
916 dma_flags
= claim_dma_lock();
917 clear_dma_ff(devpriv
->dma
);
918 set_dma_addr(devpriv
->dma
, devpriv
->hwdmaptr
[0]);
919 set_dma_count(devpriv
->dma
, devpriv
->dmabytestomove
[0]);
920 release_dma_lock(dma_flags
);
921 enable_dma(devpriv
->dma
);
922 #ifdef PCL812_EXTDEBUG
924 ("pcl812 EDBG: DMA %d PTR 0x%0x/0x%0x LEN %u/%u EOS %d\n",
925 devpriv
->dma
, devpriv
->hwdmaptr
[0],
926 devpriv
->hwdmaptr
[1], devpriv
->dmabytestomove
[0],
927 devpriv
->dmabytestomove
[1], devpriv
->ai_eos
);
931 switch (cmd
->convert_src
) {
933 start_pacer(dev
, 1, divisor1
, divisor2
);
937 if (devpriv
->ai_dma
) {
938 outb(devpriv
->mode_reg_int
| 2, dev
->iobase
+ PCL812_MODE
); /* let's go! */
940 outb(devpriv
->mode_reg_int
| 6, dev
->iobase
+ PCL812_MODE
); /* let's go! */
943 #ifdef PCL812_EXTDEBUG
944 printk("pcl812 EDBG: END: pcl812_ai_cmd(...)\n");
951 ==============================================================================
953 static irqreturn_t
interrupt_pcl812_ai_int(int irq
, void *d
)
956 unsigned int mask
, timeout
;
957 struct comedi_device
*dev
= d
;
958 struct comedi_subdevice
*s
= dev
->subdevices
+ 0;
959 unsigned int next_chan
;
961 s
->async
->events
= 0;
963 timeout
= 50; /* wait max 50us, it must finish under 33us */
964 if (devpriv
->ai_is16b
) {
967 if (!(inb(dev
->iobase
+ ACL8216_STATUS
) & ACL8216_DRDY
)) {
976 if (!(inb(dev
->iobase
+ PCL812_AD_HI
) & PCL812_DRDY
)) {
986 ("comedi%d: pcl812: (%s at 0x%lx) A/D cmd IRQ without DRDY!\n",
987 dev
->minor
, dev
->board_name
, dev
->iobase
);
988 pcl812_ai_cancel(dev
, s
);
989 s
->async
->events
|= COMEDI_CB_EOA
| COMEDI_CB_ERROR
;
990 comedi_event(dev
, s
);
994 comedi_buf_put(s
->async
,
995 ((inb(dev
->iobase
+ PCL812_AD_HI
) << 8) |
996 inb(dev
->iobase
+ PCL812_AD_LO
)) & mask
);
998 /* Set up next channel. Added by abbotti 2010-01-20, but untested. */
999 next_chan
= s
->async
->cur_chan
+ 1;
1000 if (next_chan
>= devpriv
->ai_n_chan
)
1002 if (devpriv
->ai_chanlist
[s
->async
->cur_chan
] !=
1003 devpriv
->ai_chanlist
[next_chan
])
1004 setup_range_channel(dev
, s
, devpriv
->ai_chanlist
[next_chan
], 0);
1006 outb(0, dev
->iobase
+ PCL812_CLRINT
); /* clear INT request */
1008 s
->async
->cur_chan
= next_chan
;
1009 if (next_chan
== 0) { /* one scan done */
1010 devpriv
->ai_act_scan
++;
1011 if (!(devpriv
->ai_neverending
))
1012 if (devpriv
->ai_act_scan
>= devpriv
->ai_scans
) { /* all data sampled */
1013 pcl812_ai_cancel(dev
, s
);
1014 s
->async
->events
|= COMEDI_CB_EOA
;
1018 comedi_event(dev
, s
);
1023 ==============================================================================
1025 static void transfer_from_dma_buf(struct comedi_device
*dev
,
1026 struct comedi_subdevice
*s
, short *ptr
,
1027 unsigned int bufptr
, unsigned int len
)
1031 s
->async
->events
= 0;
1032 for (i
= len
; i
; i
--) {
1033 comedi_buf_put(s
->async
, ptr
[bufptr
++]); /* get one sample */
1035 s
->async
->cur_chan
++;
1036 if (s
->async
->cur_chan
>= devpriv
->ai_n_chan
) {
1037 s
->async
->cur_chan
= 0;
1038 devpriv
->ai_act_scan
++;
1039 if (!devpriv
->ai_neverending
)
1040 if (devpriv
->ai_act_scan
>= devpriv
->ai_scans
) { /* all data sampled */
1041 pcl812_ai_cancel(dev
, s
);
1042 s
->async
->events
|= COMEDI_CB_EOA
;
1048 comedi_event(dev
, s
);
1052 ==============================================================================
1054 static irqreturn_t
interrupt_pcl812_ai_dma(int irq
, void *d
)
1056 struct comedi_device
*dev
= d
;
1057 struct comedi_subdevice
*s
= dev
->subdevices
+ 0;
1058 unsigned long dma_flags
;
1062 #ifdef PCL812_EXTDEBUG
1063 printk("pcl812 EDBG: BGN: interrupt_pcl812_ai_dma(...)\n");
1065 ptr
= (short *)devpriv
->dmabuf
[devpriv
->next_dma_buf
];
1066 len
= (devpriv
->dmabytestomove
[devpriv
->next_dma_buf
] >> 1) -
1067 devpriv
->ai_poll_ptr
;
1069 devpriv
->next_dma_buf
= 1 - devpriv
->next_dma_buf
;
1070 disable_dma(devpriv
->dma
);
1071 set_dma_mode(devpriv
->dma
, DMA_MODE_READ
);
1072 dma_flags
= claim_dma_lock();
1073 set_dma_addr(devpriv
->dma
, devpriv
->hwdmaptr
[devpriv
->next_dma_buf
]);
1074 if (devpriv
->ai_eos
) {
1075 set_dma_count(devpriv
->dma
,
1076 devpriv
->dmabytestomove
[devpriv
->next_dma_buf
]);
1078 if (devpriv
->dma_runs_to_end
) {
1079 set_dma_count(devpriv
->dma
,
1080 devpriv
->dmabytestomove
[devpriv
->
1083 set_dma_count(devpriv
->dma
, devpriv
->last_dma_run
);
1085 devpriv
->dma_runs_to_end
--;
1087 release_dma_lock(dma_flags
);
1088 enable_dma(devpriv
->dma
);
1090 outb(0, dev
->iobase
+ PCL812_CLRINT
); /* clear INT request */
1092 bufptr
= devpriv
->ai_poll_ptr
;
1093 devpriv
->ai_poll_ptr
= 0;
1095 transfer_from_dma_buf(dev
, s
, ptr
, bufptr
, len
);
1097 #ifdef PCL812_EXTDEBUG
1098 printk("pcl812 EDBG: END: interrupt_pcl812_ai_dma(...)\n");
1104 ==============================================================================
1106 static irqreturn_t
interrupt_pcl812(int irq
, void *d
)
1108 struct comedi_device
*dev
= d
;
1110 if (!dev
->attached
) {
1111 comedi_error(dev
, "spurious interrupt");
1114 if (devpriv
->ai_dma
) {
1115 return interrupt_pcl812_ai_dma(irq
, d
);
1117 return interrupt_pcl812_ai_int(irq
, d
);
1122 ==============================================================================
1124 static int pcl812_ai_poll(struct comedi_device
*dev
, struct comedi_subdevice
*s
)
1126 unsigned long flags
;
1127 unsigned int top1
, top2
, i
;
1129 if (!devpriv
->ai_dma
)
1130 return 0; /* poll is valid only for DMA transfer */
1132 spin_lock_irqsave(&dev
->spinlock
, flags
);
1134 for (i
= 0; i
< 10; i
++) {
1135 top1
= get_dma_residue(devpriv
->ai_dma
); /* where is now DMA */
1136 top2
= get_dma_residue(devpriv
->ai_dma
);
1142 spin_unlock_irqrestore(&dev
->spinlock
, flags
);
1146 top1
= devpriv
->dmabytestomove
[1 - devpriv
->next_dma_buf
] - top1
; /* where is now DMA in buffer */
1147 top1
>>= 1; /* sample position */
1148 top2
= top1
- devpriv
->ai_poll_ptr
;
1149 if (top2
< 1) { /* no new samples */
1150 spin_unlock_irqrestore(&dev
->spinlock
, flags
);
1154 transfer_from_dma_buf(dev
, s
,
1155 (void *)devpriv
->dmabuf
[1 -
1156 devpriv
->next_dma_buf
],
1157 devpriv
->ai_poll_ptr
, top2
);
1159 devpriv
->ai_poll_ptr
= top1
; /* new buffer position */
1161 spin_unlock_irqrestore(&dev
->spinlock
, flags
);
1163 return s
->async
->buf_write_count
- s
->async
->buf_read_count
;
1167 ==============================================================================
1169 static void setup_range_channel(struct comedi_device
*dev
,
1170 struct comedi_subdevice
*s
,
1171 unsigned int rangechan
, char wait
)
1173 unsigned char chan_reg
= CR_CHAN(rangechan
); /* normal board */
1174 unsigned char gain_reg
= CR_RANGE(rangechan
) + devpriv
->range_correction
; /* gain index */
1176 if ((chan_reg
== devpriv
->old_chan_reg
)
1177 && (gain_reg
== devpriv
->old_gain_reg
))
1178 return; /* we can return, no change */
1180 devpriv
->old_chan_reg
= chan_reg
;
1181 devpriv
->old_gain_reg
= gain_reg
;
1183 if (devpriv
->use_MPC
) {
1184 if (devpriv
->use_diff
) {
1185 chan_reg
= chan_reg
| 0x30; /* DIFF inputs */
1187 if (chan_reg
& 0x80) {
1188 chan_reg
= chan_reg
| 0x20; /* SE inputs 8-15 */
1190 chan_reg
= chan_reg
| 0x10; /* SE inputs 0-7 */
1195 outb(chan_reg
, dev
->iobase
+ PCL812_MUX
); /* select channel */
1196 outb(gain_reg
, dev
->iobase
+ PCL812_GAIN
); /* select gain */
1199 udelay(devpriv
->max_812_ai_mode0_rangewait
); /* XXX this depends on selected range and can be very long for some high gain ranges! */
1204 ==============================================================================
1206 static void start_pacer(struct comedi_device
*dev
, int mode
,
1207 unsigned int divisor1
, unsigned int divisor2
)
1209 #ifdef PCL812_EXTDEBUG
1210 printk("pcl812 EDBG: BGN: start_pacer(%d,%u,%u)\n", mode
, divisor1
,
1213 outb(0xb4, dev
->iobase
+ PCL812_CTRCTL
);
1214 outb(0x74, dev
->iobase
+ PCL812_CTRCTL
);
1218 outb(divisor2
& 0xff, dev
->iobase
+ PCL812_CTR2
);
1219 outb((divisor2
>> 8) & 0xff, dev
->iobase
+ PCL812_CTR2
);
1220 outb(divisor1
& 0xff, dev
->iobase
+ PCL812_CTR1
);
1221 outb((divisor1
>> 8) & 0xff, dev
->iobase
+ PCL812_CTR1
);
1223 #ifdef PCL812_EXTDEBUG
1224 printk("pcl812 EDBG: END: start_pacer(...)\n");
1229 ==============================================================================
1231 static void free_resources(struct comedi_device
*dev
)
1235 if (devpriv
->dmabuf
[0])
1236 free_pages(devpriv
->dmabuf
[0], devpriv
->dmapages
[0]);
1237 if (devpriv
->dmabuf
[1])
1238 free_pages(devpriv
->dmabuf
[1], devpriv
->dmapages
[1]);
1240 free_dma(devpriv
->dma
);
1243 free_irq(dev
->irq
, dev
);
1245 release_region(dev
->iobase
, this_board
->io_range
);
1249 ==============================================================================
1251 static int pcl812_ai_cancel(struct comedi_device
*dev
,
1252 struct comedi_subdevice
*s
)
1254 #ifdef PCL812_EXTDEBUG
1255 printk("pcl812 EDBG: BGN: pcl812_ai_cancel(...)\n");
1257 if (devpriv
->ai_dma
)
1258 disable_dma(devpriv
->dma
);
1259 outb(0, dev
->iobase
+ PCL812_CLRINT
); /* clear INT request */
1260 outb(devpriv
->mode_reg_int
| 0, dev
->iobase
+ PCL812_MODE
); /* Stop A/D */
1261 start_pacer(dev
, -1, 0, 0); /* stop 8254 */
1262 outb(0, dev
->iobase
+ PCL812_CLRINT
); /* clear INT request */
1263 #ifdef PCL812_EXTDEBUG
1264 printk("pcl812 EDBG: END: pcl812_ai_cancel(...)\n");
1270 ==============================================================================
1272 static void pcl812_reset(struct comedi_device
*dev
)
1274 #ifdef PCL812_EXTDEBUG
1275 printk("pcl812 EDBG: BGN: pcl812_reset(...)\n");
1277 outb(0, dev
->iobase
+ PCL812_MUX
);
1278 outb(0 + devpriv
->range_correction
, dev
->iobase
+ PCL812_GAIN
);
1279 devpriv
->old_chan_reg
= -1; /* invalidate chain/gain memory */
1280 devpriv
->old_gain_reg
= -1;
1282 switch (this_board
->board_type
) {
1287 outb(0, dev
->iobase
+ PCL812_DA2_LO
);
1288 outb(0, dev
->iobase
+ PCL812_DA2_HI
);
1290 outb(0, dev
->iobase
+ PCL812_DA1_LO
);
1291 outb(0, dev
->iobase
+ PCL812_DA1_HI
);
1292 start_pacer(dev
, -1, 0, 0); /* stop 8254 */
1293 outb(0, dev
->iobase
+ PCL812_DO_HI
);
1294 outb(0, dev
->iobase
+ PCL812_DO_LO
);
1295 outb(devpriv
->mode_reg_int
| 0, dev
->iobase
+ PCL812_MODE
);
1296 outb(0, dev
->iobase
+ PCL812_CLRINT
);
1306 #ifdef PCL812_EXTDEBUG
1307 printk("pcl812 EDBG: END: pcl812_reset(...)\n");
1312 ==============================================================================
1314 static int pcl812_attach(struct comedi_device
*dev
, struct comedi_devconfig
*it
)
1317 unsigned long iobase
;
1320 unsigned long pages
;
1321 struct comedi_subdevice
*s
;
1324 iobase
= it
->options
[0];
1325 printk("comedi%d: pcl812: board=%s, ioport=0x%03lx", dev
->minor
,
1326 this_board
->name
, iobase
);
1328 if (!request_region(iobase
, this_board
->io_range
, "pcl812")) {
1329 printk("I/O port conflict\n");
1332 dev
->iobase
= iobase
;
1334 ret
= alloc_private(dev
, sizeof(struct pcl812_private
));
1336 free_resources(dev
);
1337 return ret
; /* Can't alloc mem */
1340 dev
->board_name
= this_board
->name
;
1343 if (this_board
->IRQbits
!= 0) { /* board support IRQ */
1344 irq
= it
->options
[1];
1345 if (irq
) { /* we want to use IRQ */
1346 if (((1 << irq
) & this_board
->IRQbits
) == 0) {
1348 (", IRQ %u is out of allowed range, DISABLING IT",
1350 irq
= 0; /* Bad IRQ */
1353 (irq
, interrupt_pcl812
, 0, "pcl812", dev
)) {
1355 (", unable to allocate IRQ %u, DISABLING IT",
1357 irq
= 0; /* Can't use IRQ */
1359 printk(", irq=%u", irq
);
1370 goto no_dma
; /* if we haven't IRQ, we can't use DMA */
1371 if (this_board
->DMAbits
!= 0) { /* board support DMA */
1372 dma
= it
->options
[2];
1373 if (((1 << dma
) & this_board
->DMAbits
) == 0) {
1374 printk(", DMA is out of allowed range, FAIL!\n");
1375 return -EINVAL
; /* Bad DMA */
1377 ret
= request_dma(dma
, "pcl812");
1379 printk(", unable to allocate DMA %u, FAIL!\n", dma
);
1380 return -EBUSY
; /* DMA isn't free */
1383 printk(", dma=%u", dma
);
1384 pages
= 1; /* we want 8KB */
1385 devpriv
->dmabuf
[0] = __get_dma_pages(GFP_KERNEL
, pages
);
1386 if (!devpriv
->dmabuf
[0]) {
1387 printk(", unable to allocate DMA buffer, FAIL!\n");
1388 /* maybe experiment with try_to_free_pages() will help .... */
1389 free_resources(dev
);
1390 return -EBUSY
; /* no buffer :-( */
1392 devpriv
->dmapages
[0] = pages
;
1393 devpriv
->hwdmaptr
[0] = virt_to_bus((void *)devpriv
->dmabuf
[0]);
1394 devpriv
->hwdmasize
[0] = PAGE_SIZE
* (1 << pages
);
1395 devpriv
->dmabuf
[1] = __get_dma_pages(GFP_KERNEL
, pages
);
1396 if (!devpriv
->dmabuf
[1]) {
1397 printk(", unable to allocate DMA buffer, FAIL!\n");
1398 free_resources(dev
);
1401 devpriv
->dmapages
[1] = pages
;
1402 devpriv
->hwdmaptr
[1] = virt_to_bus((void *)devpriv
->dmabuf
[1]);
1403 devpriv
->hwdmasize
[1] = PAGE_SIZE
* (1 << pages
);
1408 if (this_board
->n_aichan
> 0)
1410 if (this_board
->n_aochan
> 0)
1412 if (this_board
->n_dichan
> 0)
1414 if (this_board
->n_dochan
> 0)
1417 ret
= alloc_subdevices(dev
, n_subdevices
);
1419 free_resources(dev
);
1426 if (this_board
->n_aichan
> 0) {
1427 s
= dev
->subdevices
+ subdev
;
1428 s
->type
= COMEDI_SUBD_AI
;
1429 s
->subdev_flags
= SDF_READABLE
;
1430 switch (this_board
->board_type
) {
1432 if (it
->options
[2] == 1) {
1433 s
->n_chan
= this_board
->n_aichan_diff
;
1434 s
->subdev_flags
|= SDF_DIFF
;
1435 devpriv
->use_diff
= 1;
1437 s
->n_chan
= this_board
->n_aichan
;
1438 s
->subdev_flags
|= SDF_GROUND
;
1443 if (it
->options
[4] == 1) {
1444 s
->n_chan
= this_board
->n_aichan_diff
;
1445 s
->subdev_flags
|= SDF_DIFF
;
1446 devpriv
->use_diff
= 1;
1448 s
->n_chan
= this_board
->n_aichan
;
1449 s
->subdev_flags
|= SDF_GROUND
;
1453 s
->n_chan
= this_board
->n_aichan
;
1454 s
->subdev_flags
|= SDF_GROUND
;
1457 s
->maxdata
= this_board
->ai_maxdata
;
1458 s
->len_chanlist
= MAX_CHANLIST_LEN
;
1459 s
->range_table
= this_board
->rangelist_ai
;
1460 if (this_board
->board_type
== boardACL8216
) {
1461 s
->insn_read
= acl8216_ai_insn_read
;
1463 s
->insn_read
= pcl812_ai_insn_read
;
1465 devpriv
->use_MPC
= this_board
->haveMPC508
;
1466 s
->cancel
= pcl812_ai_cancel
;
1468 dev
->read_subdev
= s
;
1469 s
->subdev_flags
|= SDF_CMD_READ
;
1470 s
->do_cmdtest
= pcl812_ai_cmdtest
;
1471 s
->do_cmd
= pcl812_ai_cmd
;
1472 s
->poll
= pcl812_ai_poll
;
1474 switch (this_board
->board_type
) {
1476 if (it
->options
[4] == 1)
1477 s
->range_table
= &range_pcl812pg2_ai
;
1480 switch (it
->options
[4]) {
1482 s
->range_table
= &range_bipolar10
;
1485 s
->range_table
= &range_bipolar5
;
1488 s
->range_table
= &range_bipolar2_5
;
1491 s
->range_table
= &range812_bipolar1_25
;
1494 s
->range_table
= &range812_bipolar0_625
;
1497 s
->range_table
= &range812_bipolar0_3125
;
1500 s
->range_table
= &range_bipolar10
;
1503 (", incorrect range number %d, changing to 0 (+/-10V)",
1510 if (it
->options
[1] == 1)
1511 s
->range_table
= &range_pcl813b2_ai
;
1514 switch (it
->options
[1]) {
1516 s
->range_table
= &range_iso813_1_ai
;
1519 s
->range_table
= &range_iso813_1_2_ai
;
1522 s
->range_table
= &range_iso813_2_ai
;
1523 devpriv
->range_correction
= 1;
1526 s
->range_table
= &range_iso813_2_2_ai
;
1527 devpriv
->range_correction
= 1;
1530 s
->range_table
= &range_iso813_1_ai
;
1533 (", incorrect range number %d, changing to 0 ",
1539 switch (it
->options
[1]) {
1541 s
->range_table
= &range_acl8113_1_ai
;
1544 s
->range_table
= &range_acl8113_1_2_ai
;
1547 s
->range_table
= &range_acl8113_2_ai
;
1548 devpriv
->range_correction
= 1;
1551 s
->range_table
= &range_acl8113_2_2_ai
;
1552 devpriv
->range_correction
= 1;
1555 s
->range_table
= &range_acl8113_1_ai
;
1558 (", incorrect range number %d, changing to 0 ",
1568 if (this_board
->n_aochan
> 0) {
1569 s
= dev
->subdevices
+ subdev
;
1570 s
->type
= COMEDI_SUBD_AO
;
1571 s
->subdev_flags
= SDF_WRITABLE
| SDF_GROUND
;
1572 s
->n_chan
= this_board
->n_aochan
;
1574 s
->len_chanlist
= 1;
1575 s
->range_table
= this_board
->rangelist_ao
;
1576 s
->insn_read
= pcl812_ao_insn_read
;
1577 s
->insn_write
= pcl812_ao_insn_write
;
1578 switch (this_board
->board_type
) {
1580 if (it
->options
[3] == 1)
1581 s
->range_table
= &range_unipolar10
;
1587 if (it
->options
[5] == 1)
1588 s
->range_table
= &range_unipolar10
;
1589 if (it
->options
[5] == 2)
1590 s
->range_table
= &range_unknown
;
1597 if (this_board
->n_dichan
> 0) {
1598 s
= dev
->subdevices
+ subdev
;
1599 s
->type
= COMEDI_SUBD_DI
;
1600 s
->subdev_flags
= SDF_READABLE
;
1601 s
->n_chan
= this_board
->n_dichan
;
1603 s
->len_chanlist
= this_board
->n_dichan
;
1604 s
->range_table
= &range_digital
;
1605 s
->insn_bits
= pcl812_di_insn_bits
;
1609 /* digital output */
1610 if (this_board
->n_dochan
> 0) {
1611 s
= dev
->subdevices
+ subdev
;
1612 s
->type
= COMEDI_SUBD_DO
;
1613 s
->subdev_flags
= SDF_WRITABLE
;
1614 s
->n_chan
= this_board
->n_dochan
;
1616 s
->len_chanlist
= this_board
->n_dochan
;
1617 s
->range_table
= &range_digital
;
1618 s
->insn_bits
= pcl812_do_insn_bits
;
1622 switch (this_board
->board_type
) {
1624 devpriv
->ai_is16b
= 1;
1628 devpriv
->max_812_ai_mode0_rangewait
= 1;
1629 if (it
->options
[3] > 0)
1630 devpriv
->use_ext_trg
= 1; /* we use external trigger */
1632 devpriv
->max_812_ai_mode0_rangewait
= 1;
1633 devpriv
->mode_reg_int
= (irq
<< 4) & 0xf0;
1639 devpriv
->max_812_ai_mode0_rangewait
= 5; /* maybe there must by greatest timeout */
1652 ==============================================================================
1654 static int pcl812_detach(struct comedi_device
*dev
)
1657 #ifdef PCL812_EXTDEBUG
1658 printk("comedi%d: pcl812: remove\n", dev
->minor
);
1660 free_resources(dev
);