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
21 * Description: Advantech PCL-812/PG, PCL-813/B,
22 * ADLink ACL-8112DG/HG/PG, ACL-8113, ACL-8216,
23 * ICP DAS A-821PGH/PGL/PGL-NDA, A-822PGH/PGL, A-823PGH/PGL, A-826PG,
25 * Author: Michal Dobes <dobes@tesnet.cz>
26 * Devices: [Advantech] PCL-812 (pcl812), PCL-812PG (pcl812pg),
27 * PCL-813 (pcl813), PCL-813B (pcl813b), [ADLink] ACL-8112DG (acl8112dg),
28 * ACL-8112HG (acl8112hg), ACL-8113 (acl-8113), ACL-8216 (acl8216),
29 * [ICP] ISO-813 (iso813), A-821PGH (a821pgh), A-821PGL (a821pgl),
30 * A-821PGL-NDA (a821pclnda), A-822PGH (a822pgh), A-822PGL (a822pgl),
31 * A-823PGH (a823pgh), A-823PGL (a823pgl), A-826PG (a826pg)
32 * Updated: Mon, 06 Aug 2007 12:03:15 +0100
33 * Status: works (I hope. My board fire up under my hands
34 * and I cann't test all features.)
36 * This driver supports insn and cmd interfaces. Some boards support only insn
37 * because their hardware don't allow more (PCL-813/B, ACL-8113, ISO-813).
38 * Data transfer over DMA is supported only when you measure only one
39 * channel, this is too hardware limitation of these boards.
41 * Options for PCL-812:
43 * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7; 10, 11, 12, 14, 15)
44 * [2] - DMA (0=disable, 1, 3)
45 * [3] - 0=trigger source is internal 8253 with 2MHz clock
46 * 1=trigger source is external
47 * [4] - 0=A/D input range is +/-10V
48 * 1=A/D input range is +/-5V
49 * 2=A/D input range is +/-2.5V
50 * 3=A/D input range is +/-1.25V
51 * 4=A/D input range is +/-0.625V
52 * 5=A/D input range is +/-0.3125V
53 * [5] - 0=D/A outputs 0-5V (internal reference -5V)
54 * 1=D/A outputs 0-10V (internal reference -10V)
55 * 2=D/A outputs unknown (external reference)
57 * Options for PCL-812PG, ACL-8112PG:
59 * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7; 10, 11, 12, 14, 15)
60 * [2] - DMA (0=disable, 1, 3)
61 * [3] - 0=trigger source is internal 8253 with 2MHz clock
62 * 1=trigger source is external
63 * [4] - 0=A/D have max +/-5V input
64 * 1=A/D have max +/-10V input
65 * [5] - 0=D/A outputs 0-5V (internal reference -5V)
66 * 1=D/A outputs 0-10V (internal reference -10V)
67 * 2=D/A outputs unknown (external reference)
69 * Options for ACL-8112DG/HG, A-822PGL/PGH, A-823PGL/PGH, ACL-8216, A-826PG:
71 * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7; 10, 11, 12, 14, 15)
72 * [2] - DMA (0=disable, 1, 3)
73 * [3] - 0=trigger source is internal 8253 with 2MHz clock
74 * 1=trigger source is external
75 * [4] - 0=A/D channels are S.E.
76 * 1=A/D channels are DIFF
77 * [5] - 0=D/A outputs 0-5V (internal reference -5V)
78 * 1=D/A outputs 0-10V (internal reference -10V)
79 * 2=D/A outputs unknown (external reference)
81 * Options for A-821PGL/PGH:
83 * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7)
84 * [2] - 0=A/D channels are S.E.
85 * 1=A/D channels are DIFF
86 * [3] - 0=D/A output 0-5V (internal reference -5V)
87 * 1=D/A output 0-10V (internal reference -10V)
89 * Options for A-821PGL-NDA:
91 * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7)
92 * [2] - 0=A/D channels are S.E.
93 * 1=A/D channels are DIFF
95 * Options for PCL-813:
98 * Options for PCL-813B:
100 * [1] - 0= bipolar inputs
103 * Options for ACL-8113, ISO-813:
105 * [1] - 0= 10V bipolar inputs
106 * 1= 10V unipolar inputs
107 * 2= 20V bipolar inputs
108 * 3= 20V unipolar inputs
111 #include <linux/module.h>
112 #include <linux/interrupt.h>
113 #include <linux/gfp.h>
114 #include <linux/delay.h>
115 #include <linux/io.h>
117 #include "../comedidev.h"
119 #include "comedi_isadma.h"
120 #include "comedi_8254.h"
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 */
136 #define PCL812_TIMER_BASE 0x00
137 #define PCL812_AI_LSB_REG 0x04
138 #define PCL812_AI_MSB_REG 0x05
139 #define PCL812_AI_MSB_DRDY (1 << 4)
140 #define PCL812_AO_LSB_REG(x) (0x04 + ((x) * 2))
141 #define PCL812_AO_MSB_REG(x) (0x05 + ((x) * 2))
142 #define PCL812_DI_LSB_REG 0x06
143 #define PCL812_DI_MSB_REG 0x07
144 #define PCL812_STATUS_REG 0x08
145 #define PCL812_STATUS_DRDY (1 << 5)
146 #define PCL812_RANGE_REG 0x09
147 #define PCL812_MUX_REG 0x0a
148 #define PCL812_MUX_CHAN(x) ((x) << 0)
149 #define PCL812_MUX_CS0 (1 << 4)
150 #define PCL812_MUX_CS1 (1 << 5)
151 #define PCL812_CTRL_REG 0x0b
152 #define PCL812_CTRL_DISABLE_TRIG (0 << 0)
153 #define PCL812_CTRL_SOFT_TRIG (1 << 0)
154 #define PCL812_CTRL_PACER_DMA_TRIG (2 << 0)
155 #define PCL812_CTRL_PACER_EOC_TRIG (6 << 0)
156 #define PCL812_SOFTTRIG_REG 0x0c
157 #define PCL812_DO_LSB_REG 0x0d
158 #define PCL812_DO_MSB_REG 0x0e
160 #define MAX_CHANLIST_LEN 256 /* length of scan list */
162 static const struct comedi_lrange range_pcl812pg_ai = {
172 static const struct comedi_lrange range_pcl812pg2_ai = {
182 static const struct comedi_lrange range812_bipolar1_25 = {
188 static const struct comedi_lrange range812_bipolar0_625 = {
194 static const struct comedi_lrange range812_bipolar0_3125 = {
200 static const struct comedi_lrange range_pcl813b_ai = {
209 static const struct comedi_lrange range_pcl813b2_ai = {
218 static const struct comedi_lrange range_iso813_1_ai = {
228 static const struct comedi_lrange range_iso813_1_2_ai = {
238 static const struct comedi_lrange range_iso813_2_ai = {
247 static const struct comedi_lrange range_iso813_2_2_ai = {
256 static const struct comedi_lrange range_acl8113_1_ai = {
265 static const struct comedi_lrange range_acl8113_1_2_ai = {
274 static const struct comedi_lrange range_acl8113_2_ai = {
282 static const struct comedi_lrange range_acl8113_2_2_ai = {
290 static const struct comedi_lrange range_acl8112dg_ai = {
304 static const struct comedi_lrange range_acl8112hg_ai = {
321 static const struct comedi_lrange range_a821pgh_ai = {
330 struct pcl812_board {
335 unsigned int ai_ns_min;
336 const struct comedi_lrange *rangelist_ai;
337 unsigned int IRQbits;
338 unsigned int has_dma:1;
339 unsigned int has_16bit_ai:1;
340 unsigned int has_mpc508_mux:1;
341 unsigned int has_dio:1;
344 static const struct pcl812_board boardtypes[] = {
347 .board_type = boardPCL812,
351 .rangelist_ai = &range_bipolar10,
357 .board_type = boardPCL812PG,
361 .rangelist_ai = &range_pcl812pg_ai,
367 .board_type = boardPCL812PG,
371 .rangelist_ai = &range_pcl812pg_ai,
377 .board_type = boardACL8112,
378 .n_aichan = 16, /* 8 differential */
381 .rangelist_ai = &range_acl8112dg_ai,
388 .board_type = boardACL8112,
389 .n_aichan = 16, /* 8 differential */
392 .rangelist_ai = &range_acl8112hg_ai,
399 .board_type = boardA821,
400 .n_aichan = 16, /* 8 differential */
403 .rangelist_ai = &range_pcl813b_ai,
407 .name = "a821pglnda",
408 .board_type = boardA821,
409 .n_aichan = 16, /* 8 differential */
411 .rangelist_ai = &range_pcl813b_ai,
415 .board_type = boardA821,
416 .n_aichan = 16, /* 8 differential */
419 .rangelist_ai = &range_a821pgh_ai,
424 .board_type = boardACL8112,
425 .n_aichan = 16, /* 8 differential */
428 .rangelist_ai = &range_acl8112dg_ai,
434 .board_type = boardACL8112,
435 .n_aichan = 16, /* 8 differential */
438 .rangelist_ai = &range_acl8112hg_ai,
444 .board_type = boardACL8112,
445 .n_aichan = 16, /* 8 differential */
448 .rangelist_ai = &range_acl8112dg_ai,
454 .board_type = boardACL8112,
455 .n_aichan = 16, /* 8 differential */
458 .rangelist_ai = &range_acl8112hg_ai,
464 .board_type = boardPCL813,
466 .rangelist_ai = &range_pcl813b_ai,
469 .board_type = boardPCL813B,
471 .rangelist_ai = &range_pcl813b_ai,
474 .board_type = boardACL8113,
476 .rangelist_ai = &range_acl8113_1_ai,
479 .board_type = boardISO813,
481 .rangelist_ai = &range_iso813_1_ai,
484 .board_type = boardACL8216,
485 .n_aichan = 16, /* 8 differential */
488 .rangelist_ai = &range_pcl813b2_ai,
496 .board_type = boardACL8216,
497 .n_aichan = 16, /* 8 differential */
500 .rangelist_ai = &range_pcl813b2_ai,
508 struct pcl812_private {
509 struct comedi_isadma *dma;
510 unsigned char range_correction; /* =1 we must add 1 to range number */
511 unsigned int last_ai_chanspec;
512 unsigned char mode_reg_int; /* there is stored INT number for some card */
513 unsigned int ai_poll_ptr; /* how many sampes transfer poll */
514 unsigned int max_812_ai_mode0_rangewait; /* setling time for gain */
515 unsigned int use_diff:1;
516 unsigned int use_mpc508:1;
517 unsigned int use_ext_trg:1;
518 unsigned int ai_dma:1;
519 unsigned int ai_eos:1;
522 static void pcl812_ai_setup_dma(struct comedi_device *dev,
523 struct comedi_subdevice *s,
524 unsigned int unread_samples)
526 struct pcl812_private *devpriv = dev->private;
527 struct comedi_isadma *dma = devpriv->dma;
528 struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
530 unsigned int max_samples;
531 unsigned int nsamples;
533 comedi_isadma_disable(dma->chan);
535 /* if using EOS, adapt DMA buffer to one scan */
536 bytes = devpriv->ai_eos ? comedi_bytes_per_scan(s) : desc->maxsize;
537 max_samples = comedi_bytes_to_samples(s, bytes);
540 * Determine dma size based on the buffer size plus the number of
541 * unread samples and the number of samples remaining in the command.
543 nsamples = comedi_nsamples_left(s, max_samples + unread_samples);
544 if (nsamples > unread_samples) {
545 nsamples -= unread_samples;
546 desc->size = comedi_samples_to_bytes(s, nsamples);
547 comedi_isadma_program(desc);
551 static void pcl812_ai_set_chan_range(struct comedi_device *dev,
552 unsigned int chanspec, char wait)
554 struct pcl812_private *devpriv = dev->private;
555 unsigned int chan = CR_CHAN(chanspec);
556 unsigned int range = CR_RANGE(chanspec);
557 unsigned int mux = 0;
559 if (chanspec == devpriv->last_ai_chanspec)
562 devpriv->last_ai_chanspec = chanspec;
564 if (devpriv->use_mpc508) {
565 if (devpriv->use_diff) {
566 mux |= PCL812_MUX_CS0 | PCL812_MUX_CS1;
569 mux |= PCL812_MUX_CS0;
571 mux |= PCL812_MUX_CS1;
575 outb(mux | PCL812_MUX_CHAN(chan), dev->iobase + PCL812_MUX_REG);
576 outb(range + devpriv->range_correction, dev->iobase + PCL812_RANGE_REG);
580 * XXX this depends on selected range and can be very long for
581 * some high gain ranges!
583 udelay(devpriv->max_812_ai_mode0_rangewait);
586 static void pcl812_ai_clear_eoc(struct comedi_device *dev)
588 /* writing any value clears the interrupt request */
589 outb(0, dev->iobase + PCL812_STATUS_REG);
592 static void pcl812_ai_soft_trig(struct comedi_device *dev)
594 /* writing any value triggers a software conversion */
595 outb(255, dev->iobase + PCL812_SOFTTRIG_REG);
598 static unsigned int pcl812_ai_get_sample(struct comedi_device *dev,
599 struct comedi_subdevice *s)
603 val = inb(dev->iobase + PCL812_AI_MSB_REG) << 8;
604 val |= inb(dev->iobase + PCL812_AI_LSB_REG);
606 return val & s->maxdata;
609 static int pcl812_ai_eoc(struct comedi_device *dev,
610 struct comedi_subdevice *s,
611 struct comedi_insn *insn,
612 unsigned long context)
616 if (s->maxdata > 0x0fff) {
617 status = inb(dev->iobase + PCL812_STATUS_REG);
618 if ((status & PCL812_STATUS_DRDY) == 0)
621 status = inb(dev->iobase + PCL812_AI_MSB_REG);
622 if ((status & PCL812_AI_MSB_DRDY) == 0)
628 static int pcl812_ai_cmdtest(struct comedi_device *dev,
629 struct comedi_subdevice *s, struct comedi_cmd *cmd)
631 const struct pcl812_board *board = dev->board_ptr;
632 struct pcl812_private *devpriv = dev->private;
636 /* Step 1 : check if triggers are trivially valid */
638 err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW);
639 err |= comedi_check_trigger_src(&cmd->scan_begin_src, TRIG_FOLLOW);
641 if (devpriv->use_ext_trg)
645 err |= comedi_check_trigger_src(&cmd->convert_src, flags);
647 err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
648 err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
653 /* Step 2a : make sure trigger sources are unique */
655 err |= comedi_check_trigger_is_unique(cmd->stop_src);
657 /* Step 2b : and mutually compatible */
662 /* Step 3: check if arguments are trivially valid */
664 err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0);
665 err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
667 if (cmd->convert_src == TRIG_TIMER) {
668 err |= comedi_check_trigger_arg_min(&cmd->convert_arg,
670 } else { /* TRIG_EXT */
671 err |= comedi_check_trigger_arg_is(&cmd->convert_arg, 0);
674 err |= comedi_check_trigger_arg_min(&cmd->chanlist_len, 1);
675 err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
678 if (cmd->stop_src == TRIG_COUNT)
679 err |= comedi_check_trigger_arg_min(&cmd->stop_arg, 1);
681 err |= comedi_check_trigger_arg_is(&cmd->stop_arg, 0);
686 /* step 4: fix up any arguments */
688 if (cmd->convert_src == TRIG_TIMER) {
689 unsigned int arg = cmd->convert_arg;
691 comedi_8254_cascade_ns_to_timer(dev->pacer, &arg, cmd->flags);
692 err |= comedi_check_trigger_arg_is(&cmd->convert_arg, arg);
701 static int pcl812_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
703 struct pcl812_private *devpriv = dev->private;
704 struct comedi_isadma *dma = devpriv->dma;
705 struct comedi_cmd *cmd = &s->async->cmd;
706 unsigned int ctrl = 0;
709 pcl812_ai_set_chan_range(dev, cmd->chanlist[0], 1);
711 if (dma) { /* check if we can use DMA transfer */
713 for (i = 1; i < cmd->chanlist_len; i++)
714 if (cmd->chanlist[0] != cmd->chanlist[i]) {
715 /* we cann't use DMA :-( */
723 devpriv->ai_poll_ptr = 0;
725 /* don't we want wake up every scan? */
726 if (cmd->flags & CMDF_WAKE_EOS) {
729 /* DMA is useless for this situation */
730 if (cmd->chanlist_len == 1)
734 if (devpriv->ai_dma) {
735 /* setup and enable dma for the first buffer */
737 pcl812_ai_setup_dma(dev, s, 0);
740 switch (cmd->convert_src) {
742 comedi_8254_update_divisors(dev->pacer);
743 comedi_8254_pacer_enable(dev->pacer, 1, 2, true);
748 ctrl |= PCL812_CTRL_PACER_DMA_TRIG;
750 ctrl |= PCL812_CTRL_PACER_EOC_TRIG;
751 outb(devpriv->mode_reg_int | ctrl, dev->iobase + PCL812_CTRL_REG);
756 static bool pcl812_ai_next_chan(struct comedi_device *dev,
757 struct comedi_subdevice *s)
759 struct comedi_cmd *cmd = &s->async->cmd;
761 if (cmd->stop_src == TRIG_COUNT &&
762 s->async->scans_done >= cmd->stop_arg) {
763 s->async->events |= COMEDI_CB_EOA;
770 static void pcl812_handle_eoc(struct comedi_device *dev,
771 struct comedi_subdevice *s)
773 struct comedi_cmd *cmd = &s->async->cmd;
774 unsigned int chan = s->async->cur_chan;
775 unsigned int next_chan;
778 if (pcl812_ai_eoc(dev, s, NULL, 0)) {
779 dev_dbg(dev->class_dev, "A/D cmd IRQ without DRDY!\n");
780 s->async->events |= COMEDI_CB_ERROR;
784 val = pcl812_ai_get_sample(dev, s);
785 comedi_buf_write_samples(s, &val, 1);
787 /* Set up next channel. Added by abbotti 2010-01-20, but untested. */
788 next_chan = s->async->cur_chan;
789 if (cmd->chanlist[chan] != cmd->chanlist[next_chan])
790 pcl812_ai_set_chan_range(dev, cmd->chanlist[next_chan], 0);
792 pcl812_ai_next_chan(dev, s);
795 static void transfer_from_dma_buf(struct comedi_device *dev,
796 struct comedi_subdevice *s,
798 unsigned int bufptr, unsigned int len)
803 for (i = len; i; i--) {
805 comedi_buf_write_samples(s, &val, 1);
807 if (!pcl812_ai_next_chan(dev, s))
812 static void pcl812_handle_dma(struct comedi_device *dev,
813 struct comedi_subdevice *s)
815 struct pcl812_private *devpriv = dev->private;
816 struct comedi_isadma *dma = devpriv->dma;
817 struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
818 unsigned int nsamples;
821 nsamples = comedi_bytes_to_samples(s, desc->size) -
822 devpriv->ai_poll_ptr;
823 bufptr = devpriv->ai_poll_ptr;
824 devpriv->ai_poll_ptr = 0;
826 /* restart dma with the next buffer */
827 dma->cur_dma = 1 - dma->cur_dma;
828 pcl812_ai_setup_dma(dev, s, nsamples);
830 transfer_from_dma_buf(dev, s, desc->virt_addr, bufptr, nsamples);
833 static irqreturn_t pcl812_interrupt(int irq, void *d)
835 struct comedi_device *dev = d;
836 struct comedi_subdevice *s = dev->read_subdev;
837 struct pcl812_private *devpriv = dev->private;
839 if (!dev->attached) {
840 pcl812_ai_clear_eoc(dev);
845 pcl812_handle_dma(dev, s);
847 pcl812_handle_eoc(dev, s);
849 pcl812_ai_clear_eoc(dev);
851 comedi_handle_events(dev, s);
855 static int pcl812_ai_poll(struct comedi_device *dev, struct comedi_subdevice *s)
857 struct pcl812_private *devpriv = dev->private;
858 struct comedi_isadma *dma = devpriv->dma;
859 struct comedi_isadma_desc *desc;
864 /* poll is valid only for DMA transfer */
865 if (!devpriv->ai_dma)
868 spin_lock_irqsave(&dev->spinlock, flags);
870 poll = comedi_isadma_poll(dma);
871 poll = comedi_bytes_to_samples(s, poll);
872 if (poll > devpriv->ai_poll_ptr) {
873 desc = &dma->desc[dma->cur_dma];
874 transfer_from_dma_buf(dev, s, desc->virt_addr,
875 devpriv->ai_poll_ptr,
876 poll - devpriv->ai_poll_ptr);
877 /* new buffer position */
878 devpriv->ai_poll_ptr = poll;
880 ret = comedi_buf_n_bytes_ready(s);
886 spin_unlock_irqrestore(&dev->spinlock, flags);
891 static int pcl812_ai_cancel(struct comedi_device *dev,
892 struct comedi_subdevice *s)
894 struct pcl812_private *devpriv = dev->private;
897 comedi_isadma_disable(devpriv->dma->chan);
899 outb(devpriv->mode_reg_int | PCL812_CTRL_DISABLE_TRIG,
900 dev->iobase + PCL812_CTRL_REG);
901 comedi_8254_pacer_enable(dev->pacer, 1, 2, false);
902 pcl812_ai_clear_eoc(dev);
906 static int pcl812_ai_insn_read(struct comedi_device *dev,
907 struct comedi_subdevice *s,
908 struct comedi_insn *insn,
911 struct pcl812_private *devpriv = dev->private;
915 outb(devpriv->mode_reg_int | PCL812_CTRL_SOFT_TRIG,
916 dev->iobase + PCL812_CTRL_REG);
918 pcl812_ai_set_chan_range(dev, insn->chanspec, 1);
920 for (i = 0; i < insn->n; i++) {
921 pcl812_ai_clear_eoc(dev);
922 pcl812_ai_soft_trig(dev);
924 ret = comedi_timeout(dev, s, insn, pcl812_ai_eoc, 0);
928 data[i] = pcl812_ai_get_sample(dev, s);
930 outb(devpriv->mode_reg_int | PCL812_CTRL_DISABLE_TRIG,
931 dev->iobase + PCL812_CTRL_REG);
932 pcl812_ai_clear_eoc(dev);
934 return ret ? ret : insn->n;
937 static int pcl812_ao_insn_write(struct comedi_device *dev,
938 struct comedi_subdevice *s,
939 struct comedi_insn *insn,
942 unsigned int chan = CR_CHAN(insn->chanspec);
943 unsigned int val = s->readback[chan];
946 for (i = 0; i < insn->n; i++) {
948 outb(val & 0xff, dev->iobase + PCL812_AO_LSB_REG(chan));
949 outb((val >> 8) & 0x0f, dev->iobase + PCL812_AO_MSB_REG(chan));
951 s->readback[chan] = val;
956 static int pcl812_di_insn_bits(struct comedi_device *dev,
957 struct comedi_subdevice *s,
958 struct comedi_insn *insn,
961 data[1] = inb(dev->iobase + PCL812_DI_LSB_REG) |
962 (inb(dev->iobase + PCL812_DI_MSB_REG) << 8);
967 static int pcl812_do_insn_bits(struct comedi_device *dev,
968 struct comedi_subdevice *s,
969 struct comedi_insn *insn,
972 if (comedi_dio_update_state(s, data)) {
973 outb(s->state & 0xff, dev->iobase + PCL812_DO_LSB_REG);
974 outb((s->state >> 8), dev->iobase + PCL812_DO_MSB_REG);
982 static void pcl812_reset(struct comedi_device *dev)
984 const struct pcl812_board *board = dev->board_ptr;
985 struct pcl812_private *devpriv = dev->private;
988 /* disable analog input trigger */
989 outb(devpriv->mode_reg_int | PCL812_CTRL_DISABLE_TRIG,
990 dev->iobase + PCL812_CTRL_REG);
991 pcl812_ai_clear_eoc(dev);
994 * Invalidate last_ai_chanspec then set analog input to
995 * known channel/range.
997 devpriv->last_ai_chanspec = CR_PACK(16, 0, 0);
998 pcl812_ai_set_chan_range(dev, CR_PACK(0, 0, 0), 0);
1000 /* set analog output channels to 0V */
1001 for (chan = 0; chan < board->n_aochan; chan++) {
1002 outb(0, dev->iobase + PCL812_AO_LSB_REG(chan));
1003 outb(0, dev->iobase + PCL812_AO_MSB_REG(chan));
1006 /* set all digital outputs low */
1007 if (board->has_dio) {
1008 outb(0, dev->iobase + PCL812_DO_MSB_REG);
1009 outb(0, dev->iobase + PCL812_DO_LSB_REG);
1013 static void pcl812_set_ai_range_table(struct comedi_device *dev,
1014 struct comedi_subdevice *s,
1015 struct comedi_devconfig *it)
1017 const struct pcl812_board *board = dev->board_ptr;
1018 struct pcl812_private *devpriv = dev->private;
1020 /* default to the range table from the boardinfo */
1021 s->range_table = board->rangelist_ai;
1023 /* now check the user config option based on the boardtype */
1024 switch (board->board_type) {
1026 if (it->options[4] == 1)
1027 s->range_table = &range_pcl812pg2_ai;
1030 switch (it->options[4]) {
1032 s->range_table = &range_bipolar10;
1035 s->range_table = &range_bipolar5;
1038 s->range_table = &range_bipolar2_5;
1041 s->range_table = &range812_bipolar1_25;
1044 s->range_table = &range812_bipolar0_625;
1047 s->range_table = &range812_bipolar0_3125;
1050 s->range_table = &range_bipolar10;
1055 if (it->options[1] == 1)
1056 s->range_table = &range_pcl813b2_ai;
1059 switch (it->options[1]) {
1061 s->range_table = &range_iso813_1_ai;
1064 s->range_table = &range_iso813_1_2_ai;
1067 s->range_table = &range_iso813_2_ai;
1068 devpriv->range_correction = 1;
1071 s->range_table = &range_iso813_2_2_ai;
1072 devpriv->range_correction = 1;
1075 s->range_table = &range_iso813_1_ai;
1080 switch (it->options[1]) {
1082 s->range_table = &range_acl8113_1_ai;
1085 s->range_table = &range_acl8113_1_2_ai;
1088 s->range_table = &range_acl8113_2_ai;
1089 devpriv->range_correction = 1;
1092 s->range_table = &range_acl8113_2_2_ai;
1093 devpriv->range_correction = 1;
1096 s->range_table = &range_acl8113_1_ai;
1103 static void pcl812_alloc_dma(struct comedi_device *dev, unsigned int dma_chan)
1105 struct pcl812_private *devpriv = dev->private;
1107 /* only DMA channels 3 and 1 are valid */
1108 if (!(dma_chan == 3 || dma_chan == 1))
1111 /* DMA uses two 8K buffers */
1112 devpriv->dma = comedi_isadma_alloc(dev, 2, dma_chan, dma_chan,
1113 PAGE_SIZE * 2, COMEDI_ISADMA_READ);
1116 static void pcl812_free_dma(struct comedi_device *dev)
1118 struct pcl812_private *devpriv = dev->private;
1121 comedi_isadma_free(devpriv->dma);
1124 static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it)
1126 const struct pcl812_board *board = dev->board_ptr;
1127 struct pcl812_private *devpriv;
1128 struct comedi_subdevice *s;
1133 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
1137 ret = comedi_request_region(dev, it->options[0], 0x10);
1141 if (board->IRQbits) {
1142 dev->pacer = comedi_8254_init(dev->iobase + PCL812_TIMER_BASE,
1143 I8254_OSC_BASE_2MHZ,
1148 if ((1 << it->options[1]) & board->IRQbits) {
1149 ret = request_irq(it->options[1], pcl812_interrupt, 0,
1150 dev->board_name, dev);
1152 dev->irq = it->options[1];
1156 /* we need an IRQ to do DMA on channel 3 or 1 */
1157 if (dev->irq && board->has_dma)
1158 pcl812_alloc_dma(dev, it->options[2]);
1160 /* differential analog inputs? */
1161 switch (board->board_type) {
1163 if (it->options[2] == 1)
1164 devpriv->use_diff = 1;
1168 if (it->options[4] == 1)
1169 devpriv->use_diff = 1;
1173 n_subdevices = 1; /* all boardtypes have analog inputs */
1174 if (board->n_aochan > 0)
1179 ret = comedi_alloc_subdevices(dev, n_subdevices);
1185 /* Analog Input subdevice */
1186 s = &dev->subdevices[subdev];
1187 s->type = COMEDI_SUBD_AI;
1188 s->subdev_flags = SDF_READABLE;
1189 if (devpriv->use_diff) {
1190 s->subdev_flags |= SDF_DIFF;
1191 s->n_chan = board->n_aichan / 2;
1193 s->subdev_flags |= SDF_GROUND;
1194 s->n_chan = board->n_aichan;
1196 s->maxdata = board->has_16bit_ai ? 0xffff : 0x0fff;
1198 pcl812_set_ai_range_table(dev, s, it);
1200 s->insn_read = pcl812_ai_insn_read;
1203 dev->read_subdev = s;
1204 s->subdev_flags |= SDF_CMD_READ;
1205 s->len_chanlist = MAX_CHANLIST_LEN;
1206 s->do_cmdtest = pcl812_ai_cmdtest;
1207 s->do_cmd = pcl812_ai_cmd;
1208 s->poll = pcl812_ai_poll;
1209 s->cancel = pcl812_ai_cancel;
1212 devpriv->use_mpc508 = board->has_mpc508_mux;
1217 if (board->n_aochan > 0) {
1218 s = &dev->subdevices[subdev];
1219 s->type = COMEDI_SUBD_AO;
1220 s->subdev_flags = SDF_WRITABLE | SDF_GROUND;
1221 s->n_chan = board->n_aochan;
1223 s->range_table = &range_unipolar5;
1224 switch (board->board_type) {
1226 if (it->options[3] == 1)
1227 s->range_table = &range_unipolar10;
1233 if (it->options[5] == 1)
1234 s->range_table = &range_unipolar10;
1235 if (it->options[5] == 2)
1236 s->range_table = &range_unknown;
1239 s->insn_write = pcl812_ao_insn_write;
1241 ret = comedi_alloc_subdev_readback(s);
1248 if (board->has_dio) {
1249 /* Digital Input subdevice */
1250 s = &dev->subdevices[subdev];
1251 s->type = COMEDI_SUBD_DI;
1252 s->subdev_flags = SDF_READABLE;
1255 s->range_table = &range_digital;
1256 s->insn_bits = pcl812_di_insn_bits;
1259 /* Digital Output subdevice */
1260 s = &dev->subdevices[subdev];
1261 s->type = COMEDI_SUBD_DO;
1262 s->subdev_flags = SDF_WRITABLE;
1265 s->range_table = &range_digital;
1266 s->insn_bits = pcl812_do_insn_bits;
1270 switch (board->board_type) {
1275 devpriv->max_812_ai_mode0_rangewait = 1;
1276 if (it->options[3] > 0)
1277 /* we use external trigger */
1278 devpriv->use_ext_trg = 1;
1281 devpriv->max_812_ai_mode0_rangewait = 1;
1282 devpriv->mode_reg_int = (dev->irq << 4) & 0xf0;
1288 /* maybe there must by greatest timeout */
1289 devpriv->max_812_ai_mode0_rangewait = 5;
1298 static void pcl812_detach(struct comedi_device *dev)
1300 pcl812_free_dma(dev);
1301 comedi_legacy_detach(dev);
1304 static struct comedi_driver pcl812_driver = {
1305 .driver_name = "pcl812",
1306 .module = THIS_MODULE,
1307 .attach = pcl812_attach,
1308 .detach = pcl812_detach,
1309 .board_name = &boardtypes[0].name,
1310 .num_names = ARRAY_SIZE(boardtypes),
1311 .offset = sizeof(struct pcl812_board),
1313 module_comedi_driver(pcl812_driver);
1315 MODULE_AUTHOR("Comedi http://www.comedi.org");
1316 MODULE_DESCRIPTION("Comedi low-level driver");
1317 MODULE_LICENSE("GPL");