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Diffstat (limited to 'drivers/staging/comedi/drivers/das08.c')
-rw-r--r--drivers/staging/comedi/drivers/das08.c470
1 files changed, 0 insertions, 470 deletions
diff --git a/drivers/staging/comedi/drivers/das08.c b/drivers/staging/comedi/drivers/das08.c
deleted file mode 100644
index b50743c5b822..000000000000
--- a/drivers/staging/comedi/drivers/das08.c
+++ /dev/null
@@ -1,470 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * comedi/drivers/das08.c
- * comedi module for common DAS08 support (used by ISA/PCI/PCMCIA drivers)
- *
- * COMEDI - Linux Control and Measurement Device Interface
- * Copyright (C) 2000 David A. Schleef <ds@schleef.org>
- * Copyright (C) 2001,2002,2003 Frank Mori Hess <fmhess@users.sourceforge.net>
- * Copyright (C) 2004 Salvador E. Tropea <set@users.sf.net> <set@ieee.org>
- */
-
-#include <linux/module.h>
-
-#include "../comedidev.h"
-
-#include "8255.h"
-#include "comedi_8254.h"
-#include "das08.h"
-
-/*
- * Data format of DAS08_AI_LSB_REG and DAS08_AI_MSB_REG depends on
- * 'ai_encoding' member of board structure:
- *
- * das08_encode12 : DATA[11..4] = MSB[7..0], DATA[3..0] = LSB[7..4].
- * das08_pcm_encode12 : DATA[11..8] = MSB[3..0], DATA[7..9] = LSB[7..0].
- * das08_encode16 : SIGN = MSB[7], MAGNITUDE[14..8] = MSB[6..0],
- * MAGNITUDE[7..0] = LSB[7..0].
- * SIGN==0 for negative input, SIGN==1 for positive input.
- * Note: when read a second time after conversion
- * complete, MSB[7] is an "over-range" bit.
- */
-#define DAS08_AI_LSB_REG 0x00 /* (R) AI least significant bits */
-#define DAS08_AI_MSB_REG 0x01 /* (R) AI most significant bits */
-#define DAS08_AI_TRIG_REG 0x01 /* (W) AI software trigger */
-#define DAS08_STATUS_REG 0x02 /* (R) status */
-#define DAS08_STATUS_AI_BUSY BIT(7) /* AI conversion in progress */
-/*
- * The IRQ status bit is set to 1 by a rising edge on the external interrupt
- * input (which may be jumpered to the pacer output). It is cleared by
- * setting the INTE control bit to 0. Not present on "JR" boards.
- */
-#define DAS08_STATUS_IRQ BIT(3) /* latched interrupt input */
-/* digital inputs (not "JR" boards) */
-#define DAS08_STATUS_DI(x) (((x) & 0x70) >> 4)
-#define DAS08_CONTROL_REG 0x02 /* (W) control */
-/*
- * Note: The AI multiplexor channel can also be read from status register using
- * the same mask.
- */
-#define DAS08_CONTROL_MUX_MASK 0x7 /* multiplexor channel mask */
-#define DAS08_CONTROL_MUX(x) ((x) & DAS08_CONTROL_MUX_MASK) /* mux channel */
-#define DAS08_CONTROL_INTE BIT(3) /* interrupt enable (not "JR" boards) */
-#define DAS08_CONTROL_DO_MASK 0xf0 /* digital outputs mask (not "JR") */
-/* digital outputs (not "JR" boards) */
-#define DAS08_CONTROL_DO(x) (((x) << 4) & DAS08_CONTROL_DO_MASK)
-/*
- * (R/W) programmable AI gain ("PGx" and "AOx" boards):
- * + bits 3..0 (R/W) show/set the gain for the current AI mux channel
- * + bits 6..4 (R) show the current AI mux channel
- * + bit 7 (R) not unused
- */
-#define DAS08_GAIN_REG 0x03
-
-#define DAS08JR_DI_REG 0x03 /* (R) digital inputs ("JR" boards) */
-#define DAS08JR_DO_REG 0x03 /* (W) digital outputs ("JR" boards) */
-/* (W) analog output l.s.b. registers for 2 channels ("JR" boards) */
-#define DAS08JR_AO_LSB_REG(x) ((x) ? 0x06 : 0x04)
-/* (W) analog output m.s.b. registers for 2 channels ("JR" boards) */
-#define DAS08JR_AO_MSB_REG(x) ((x) ? 0x07 : 0x05)
-/*
- * (R) update analog outputs ("JR" boards set for simultaneous output)
- * (same register as digital inputs)
- */
-#define DAS08JR_AO_UPDATE_REG 0x03
-
-/* (W) analog output l.s.b. registers for 2 channels ("AOx" boards) */
-#define DAS08AOX_AO_LSB_REG(x) ((x) ? 0x0a : 0x08)
-/* (W) analog output m.s.b. registers for 2 channels ("AOx" boards) */
-#define DAS08AOX_AO_MSB_REG(x) ((x) ? 0x0b : 0x09)
-/*
- * (R) update analog outputs ("AOx" boards set for simultaneous output)
- * (any of the analog output registers could be used for this)
- */
-#define DAS08AOX_AO_UPDATE_REG 0x08
-
-/* gainlist same as _pgx_ below */
-
-static const struct comedi_lrange das08_pgl_ai_range = {
- 9, {
- BIP_RANGE(10),
- BIP_RANGE(5),
- BIP_RANGE(2.5),
- BIP_RANGE(1.25),
- BIP_RANGE(0.625),
- UNI_RANGE(10),
- UNI_RANGE(5),
- UNI_RANGE(2.5),
- UNI_RANGE(1.25)
- }
-};
-
-static const struct comedi_lrange das08_pgh_ai_range = {
- 12, {
- BIP_RANGE(10),
- BIP_RANGE(5),
- BIP_RANGE(1),
- BIP_RANGE(0.5),
- BIP_RANGE(0.1),
- BIP_RANGE(0.05),
- BIP_RANGE(0.01),
- BIP_RANGE(0.005),
- UNI_RANGE(10),
- UNI_RANGE(1),
- UNI_RANGE(0.1),
- UNI_RANGE(0.01)
- }
-};
-
-static const struct comedi_lrange das08_pgm_ai_range = {
- 9, {
- BIP_RANGE(10),
- BIP_RANGE(5),
- BIP_RANGE(0.5),
- BIP_RANGE(0.05),
- BIP_RANGE(0.01),
- UNI_RANGE(10),
- UNI_RANGE(1),
- UNI_RANGE(0.1),
- UNI_RANGE(0.01)
- }
-};
-
-static const struct comedi_lrange *const das08_ai_lranges[] = {
- [das08_pg_none] = &range_unknown,
- [das08_bipolar5] = &range_bipolar5,
- [das08_pgh] = &das08_pgh_ai_range,
- [das08_pgl] = &das08_pgl_ai_range,
- [das08_pgm] = &das08_pgm_ai_range,
-};
-
-static const int das08_pgh_ai_gainlist[] = {
- 8, 0, 10, 2, 12, 4, 14, 6, 1, 3, 5, 7
-};
-static const int das08_pgl_ai_gainlist[] = { 8, 0, 2, 4, 6, 1, 3, 5, 7 };
-static const int das08_pgm_ai_gainlist[] = { 8, 0, 10, 12, 14, 9, 11, 13, 15 };
-
-static const int *const das08_ai_gainlists[] = {
- [das08_pg_none] = NULL,
- [das08_bipolar5] = NULL,
- [das08_pgh] = das08_pgh_ai_gainlist,
- [das08_pgl] = das08_pgl_ai_gainlist,
- [das08_pgm] = das08_pgm_ai_gainlist,
-};
-
-static int das08_ai_eoc(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn,
- unsigned long context)
-{
- unsigned int status;
-
- status = inb(dev->iobase + DAS08_STATUS_REG);
- if ((status & DAS08_STATUS_AI_BUSY) == 0)
- return 0;
- return -EBUSY;
-}
-
-static int das08_ai_insn_read(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data)
-{
- const struct das08_board_struct *board = dev->board_ptr;
- struct das08_private_struct *devpriv = dev->private;
- int n;
- int chan;
- int range;
- int lsb, msb;
- int ret;
-
- chan = CR_CHAN(insn->chanspec);
- range = CR_RANGE(insn->chanspec);
-
- /* clear crap */
- inb(dev->iobase + DAS08_AI_LSB_REG);
- inb(dev->iobase + DAS08_AI_MSB_REG);
-
- /* set multiplexer */
- /* lock to prevent race with digital output */
- spin_lock(&dev->spinlock);
- devpriv->do_mux_bits &= ~DAS08_CONTROL_MUX_MASK;
- devpriv->do_mux_bits |= DAS08_CONTROL_MUX(chan);
- outb(devpriv->do_mux_bits, dev->iobase + DAS08_CONTROL_REG);
- spin_unlock(&dev->spinlock);
-
- if (devpriv->pg_gainlist) {
- /* set gain/range */
- range = CR_RANGE(insn->chanspec);
- outb(devpriv->pg_gainlist[range],
- dev->iobase + DAS08_GAIN_REG);
- }
-
- for (n = 0; n < insn->n; n++) {
- /* clear over-range bits for 16-bit boards */
- if (board->ai_nbits == 16)
- if (inb(dev->iobase + DAS08_AI_MSB_REG) & 0x80)
- dev_info(dev->class_dev, "over-range\n");
-
- /* trigger conversion */
- outb_p(0, dev->iobase + DAS08_AI_TRIG_REG);
-
- ret = comedi_timeout(dev, s, insn, das08_ai_eoc, 0);
- if (ret)
- return ret;
-
- msb = inb(dev->iobase + DAS08_AI_MSB_REG);
- lsb = inb(dev->iobase + DAS08_AI_LSB_REG);
- if (board->ai_encoding == das08_encode12) {
- data[n] = (lsb >> 4) | (msb << 4);
- } else if (board->ai_encoding == das08_pcm_encode12) {
- data[n] = (msb << 8) + lsb;
- } else if (board->ai_encoding == das08_encode16) {
- /*
- * "JR" 16-bit boards are sign-magnitude.
- *
- * XXX The manual seems to imply that 0 is full-scale
- * negative and 65535 is full-scale positive, but the
- * original COMEDI patch to add support for the
- * DAS08/JR/16 and DAS08/JR/16-AO boards have it
- * encoded as sign-magnitude. Assume the original
- * COMEDI code is correct for now.
- */
- unsigned int magnitude = lsb | ((msb & 0x7f) << 8);
-
- /*
- * MSB bit 7 is 0 for negative, 1 for positive voltage.
- * COMEDI 16-bit bipolar data value for 0V is 0x8000.
- */
- if (msb & 0x80)
- data[n] = BIT(15) + magnitude;
- else
- data[n] = BIT(15) - magnitude;
- } else {
- dev_err(dev->class_dev, "bug! unknown ai encoding\n");
- return -1;
- }
- }
-
- return n;
-}
-
-static int das08_di_insn_bits(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data)
-{
- data[0] = 0;
- data[1] = DAS08_STATUS_DI(inb(dev->iobase + DAS08_STATUS_REG));
-
- return insn->n;
-}
-
-static int das08_do_insn_bits(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data)
-{
- struct das08_private_struct *devpriv = dev->private;
-
- if (comedi_dio_update_state(s, data)) {
- /* prevent race with setting of analog input mux */
- spin_lock(&dev->spinlock);
- devpriv->do_mux_bits &= ~DAS08_CONTROL_DO_MASK;
- devpriv->do_mux_bits |= DAS08_CONTROL_DO(s->state);
- outb(devpriv->do_mux_bits, dev->iobase + DAS08_CONTROL_REG);
- spin_unlock(&dev->spinlock);
- }
-
- data[1] = s->state;
-
- return insn->n;
-}
-
-static int das08jr_di_insn_bits(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data)
-{
- data[0] = 0;
- data[1] = inb(dev->iobase + DAS08JR_DI_REG);
-
- return insn->n;
-}
-
-static int das08jr_do_insn_bits(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data)
-{
- if (comedi_dio_update_state(s, data))
- outb(s->state, dev->iobase + DAS08JR_DO_REG);
-
- data[1] = s->state;
-
- return insn->n;
-}
-
-static void das08_ao_set_data(struct comedi_device *dev,
- unsigned int chan, unsigned int data)
-{
- const struct das08_board_struct *board = dev->board_ptr;
- unsigned char lsb;
- unsigned char msb;
-
- lsb = data & 0xff;
- msb = (data >> 8) & 0xff;
- if (board->is_jr) {
- outb(lsb, dev->iobase + DAS08JR_AO_LSB_REG(chan));
- outb(msb, dev->iobase + DAS08JR_AO_MSB_REG(chan));
- /* load DACs */
- inb(dev->iobase + DAS08JR_AO_UPDATE_REG);
- } else {
- outb(lsb, dev->iobase + DAS08AOX_AO_LSB_REG(chan));
- outb(msb, dev->iobase + DAS08AOX_AO_MSB_REG(chan));
- /* load DACs */
- inb(dev->iobase + DAS08AOX_AO_UPDATE_REG);
- }
-}
-
-static int das08_ao_insn_write(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn,
- unsigned int *data)
-{
- unsigned int chan = CR_CHAN(insn->chanspec);
- unsigned int val = s->readback[chan];
- int i;
-
- for (i = 0; i < insn->n; i++) {
- val = data[i];
- das08_ao_set_data(dev, chan, val);
- }
- s->readback[chan] = val;
-
- return insn->n;
-}
-
-int das08_common_attach(struct comedi_device *dev, unsigned long iobase)
-{
- const struct das08_board_struct *board = dev->board_ptr;
- struct das08_private_struct *devpriv = dev->private;
- struct comedi_subdevice *s;
- int ret;
- int i;
-
- dev->iobase = iobase;
-
- dev->board_name = board->name;
-
- ret = comedi_alloc_subdevices(dev, 6);
- if (ret)
- return ret;
-
- s = &dev->subdevices[0];
- /* ai */
- if (board->ai_nbits) {
- s->type = COMEDI_SUBD_AI;
- /*
- * XXX some boards actually have differential
- * inputs instead of single ended.
- * The driver does nothing with arefs though,
- * so it's no big deal.
- */
- s->subdev_flags = SDF_READABLE | SDF_GROUND;
- s->n_chan = 8;
- s->maxdata = (1 << board->ai_nbits) - 1;
- s->range_table = das08_ai_lranges[board->ai_pg];
- s->insn_read = das08_ai_insn_read;
- devpriv->pg_gainlist = das08_ai_gainlists[board->ai_pg];
- } else {
- s->type = COMEDI_SUBD_UNUSED;
- }
-
- s = &dev->subdevices[1];
- /* ao */
- if (board->ao_nbits) {
- s->type = COMEDI_SUBD_AO;
- s->subdev_flags = SDF_WRITABLE;
- s->n_chan = 2;
- s->maxdata = (1 << board->ao_nbits) - 1;
- s->range_table = &range_bipolar5;
- s->insn_write = das08_ao_insn_write;
-
- ret = comedi_alloc_subdev_readback(s);
- if (ret)
- return ret;
-
- /* initialize all channels to 0V */
- for (i = 0; i < s->n_chan; i++) {
- s->readback[i] = s->maxdata / 2;
- das08_ao_set_data(dev, i, s->readback[i]);
- }
- } else {
- s->type = COMEDI_SUBD_UNUSED;
- }
-
- s = &dev->subdevices[2];
- /* di */
- if (board->di_nchan) {
- s->type = COMEDI_SUBD_DI;
- s->subdev_flags = SDF_READABLE;
- s->n_chan = board->di_nchan;
- s->maxdata = 1;
- s->range_table = &range_digital;
- s->insn_bits = board->is_jr ? das08jr_di_insn_bits :
- das08_di_insn_bits;
- } else {
- s->type = COMEDI_SUBD_UNUSED;
- }
-
- s = &dev->subdevices[3];
- /* do */
- if (board->do_nchan) {
- s->type = COMEDI_SUBD_DO;
- s->subdev_flags = SDF_WRITABLE;
- s->n_chan = board->do_nchan;
- s->maxdata = 1;
- s->range_table = &range_digital;
- s->insn_bits = board->is_jr ? das08jr_do_insn_bits :
- das08_do_insn_bits;
- } else {
- s->type = COMEDI_SUBD_UNUSED;
- }
-
- s = &dev->subdevices[4];
- /* 8255 */
- if (board->i8255_offset != 0) {
- ret = subdev_8255_init(dev, s, NULL, board->i8255_offset);
- if (ret)
- return ret;
- } else {
- s->type = COMEDI_SUBD_UNUSED;
- }
-
- /* Counter subdevice (8254) */
- s = &dev->subdevices[5];
- if (board->i8254_offset) {
- dev->pacer = comedi_8254_init(dev->iobase + board->i8254_offset,
- 0, I8254_IO8, 0);
- if (!dev->pacer)
- return -ENOMEM;
-
- comedi_8254_subdevice_init(s, dev->pacer);
- } else {
- s->type = COMEDI_SUBD_UNUSED;
- }
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(das08_common_attach);
-
-static int __init das08_init(void)
-{
- return 0;
-}
-module_init(das08_init);
-
-static void __exit das08_exit(void)
-{
-}
-module_exit(das08_exit);
-
-MODULE_AUTHOR("Comedi https://www.comedi.org");
-MODULE_DESCRIPTION("Comedi common DAS08 support module");
-MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2024-06-13 09:01:43 +0000