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path: root/drivers/staging/comedi/drivers/dt2801.c
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Diffstat (limited to 'drivers/staging/comedi/drivers/dt2801.c')
-rw-r--r--drivers/staging/comedi/drivers/dt2801.c645
1 files changed, 0 insertions, 645 deletions
diff --git a/drivers/staging/comedi/drivers/dt2801.c b/drivers/staging/comedi/drivers/dt2801.c
deleted file mode 100644
index 0d571d817b4e..000000000000
--- a/drivers/staging/comedi/drivers/dt2801.c
+++ /dev/null
@@ -1,645 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * comedi/drivers/dt2801.c
- * Device Driver for DataTranslation DT2801
- *
- */
-/*
- * Driver: dt2801
- * Description: Data Translation DT2801 series and DT01-EZ
- * Author: ds
- * Status: works
- * Devices: [Data Translation] DT2801 (dt2801), DT2801-A, DT2801/5716A,
- * DT2805, DT2805/5716A, DT2808, DT2818, DT2809, DT01-EZ
- *
- * This driver can autoprobe the type of board.
- *
- * Configuration options:
- * [0] - I/O port base address
- * [1] - unused
- * [2] - A/D reference 0=differential, 1=single-ended
- * [3] - A/D range
- * 0 = [-10, 10]
- * 1 = [0,10]
- * [4] - D/A 0 range
- * 0 = [-10, 10]
- * 1 = [-5,5]
- * 2 = [-2.5,2.5]
- * 3 = [0,10]
- * 4 = [0,5]
- * [5] - D/A 1 range (same choices)
- */
-
-#include <linux/module.h>
-#include "../comedidev.h"
-#include <linux/delay.h>
-
-#define DT2801_TIMEOUT 1000
-
-/* Hardware Configuration */
-/* ====================== */
-
-#define DT2801_MAX_DMA_SIZE (64 * 1024)
-
-/* define's */
-/* ====================== */
-
-/* Commands */
-#define DT_C_RESET 0x0
-#define DT_C_CLEAR_ERR 0x1
-#define DT_C_READ_ERRREG 0x2
-#define DT_C_SET_CLOCK 0x3
-
-#define DT_C_TEST 0xb
-#define DT_C_STOP 0xf
-
-#define DT_C_SET_DIGIN 0x4
-#define DT_C_SET_DIGOUT 0x5
-#define DT_C_READ_DIG 0x6
-#define DT_C_WRITE_DIG 0x7
-
-#define DT_C_WRITE_DAIM 0x8
-#define DT_C_SET_DA 0x9
-#define DT_C_WRITE_DA 0xa
-
-#define DT_C_READ_ADIM 0xc
-#define DT_C_SET_AD 0xd
-#define DT_C_READ_AD 0xe
-
-/*
- * Command modifiers (only used with read/write), EXTTRIG can be
- * used with some other commands.
- */
-#define DT_MOD_DMA BIT(4)
-#define DT_MOD_CONT BIT(5)
-#define DT_MOD_EXTCLK BIT(6)
-#define DT_MOD_EXTTRIG BIT(7)
-
-/* Bits in status register */
-#define DT_S_DATA_OUT_READY BIT(0)
-#define DT_S_DATA_IN_FULL BIT(1)
-#define DT_S_READY BIT(2)
-#define DT_S_COMMAND BIT(3)
-#define DT_S_COMPOSITE_ERROR BIT(7)
-
-/* registers */
-#define DT2801_DATA 0
-#define DT2801_STATUS 1
-#define DT2801_CMD 1
-
-#if 0
-/* ignore 'defined but not used' warning */
-static const struct comedi_lrange range_dt2801_ai_pgh_bipolar = {
- 4, {
- BIP_RANGE(10),
- BIP_RANGE(5),
- BIP_RANGE(2.5),
- BIP_RANGE(1.25)
- }
-};
-#endif
-static const struct comedi_lrange range_dt2801_ai_pgl_bipolar = {
- 4, {
- BIP_RANGE(10),
- BIP_RANGE(1),
- BIP_RANGE(0.1),
- BIP_RANGE(0.02)
- }
-};
-
-#if 0
-/* ignore 'defined but not used' warning */
-static const struct comedi_lrange range_dt2801_ai_pgh_unipolar = {
- 4, {
- UNI_RANGE(10),
- UNI_RANGE(5),
- UNI_RANGE(2.5),
- UNI_RANGE(1.25)
- }
-};
-#endif
-static const struct comedi_lrange range_dt2801_ai_pgl_unipolar = {
- 4, {
- UNI_RANGE(10),
- UNI_RANGE(1),
- UNI_RANGE(0.1),
- UNI_RANGE(0.02)
- }
-};
-
-struct dt2801_board {
- const char *name;
- int boardcode;
- int ad_diff;
- int ad_chan;
- int adbits;
- int adrangetype;
- int dabits;
-};
-
-/*
- * Typeid's for the different boards of the DT2801-series
- * (taken from the test-software, that comes with the board)
- */
-static const struct dt2801_board boardtypes[] = {
- {
- .name = "dt2801",
- .boardcode = 0x09,
- .ad_diff = 2,
- .ad_chan = 16,
- .adbits = 12,
- .adrangetype = 0,
- .dabits = 12},
- {
- .name = "dt2801-a",
- .boardcode = 0x52,
- .ad_diff = 2,
- .ad_chan = 16,
- .adbits = 12,
- .adrangetype = 0,
- .dabits = 12},
- {
- .name = "dt2801/5716a",
- .boardcode = 0x82,
- .ad_diff = 1,
- .ad_chan = 16,
- .adbits = 16,
- .adrangetype = 1,
- .dabits = 12},
- {
- .name = "dt2805",
- .boardcode = 0x12,
- .ad_diff = 1,
- .ad_chan = 16,
- .adbits = 12,
- .adrangetype = 0,
- .dabits = 12},
- {
- .name = "dt2805/5716a",
- .boardcode = 0x92,
- .ad_diff = 1,
- .ad_chan = 16,
- .adbits = 16,
- .adrangetype = 1,
- .dabits = 12},
- {
- .name = "dt2808",
- .boardcode = 0x20,
- .ad_diff = 0,
- .ad_chan = 16,
- .adbits = 12,
- .adrangetype = 2,
- .dabits = 8},
- {
- .name = "dt2818",
- .boardcode = 0xa2,
- .ad_diff = 0,
- .ad_chan = 4,
- .adbits = 12,
- .adrangetype = 0,
- .dabits = 12},
- {
- .name = "dt2809",
- .boardcode = 0xb0,
- .ad_diff = 0,
- .ad_chan = 8,
- .adbits = 12,
- .adrangetype = 1,
- .dabits = 12},
-};
-
-struct dt2801_private {
- const struct comedi_lrange *dac_range_types[2];
-};
-
-/*
- * These are the low-level routines:
- * writecommand: write a command to the board
- * writedata: write data byte
- * readdata: read data byte
- */
-
-/*
- * Only checks DataOutReady-flag, not the Ready-flag as it is done
- * in the examples of the manual. I don't see why this should be
- * necessary.
- */
-static int dt2801_readdata(struct comedi_device *dev, int *data)
-{
- int stat = 0;
- int timeout = DT2801_TIMEOUT;
-
- do {
- stat = inb_p(dev->iobase + DT2801_STATUS);
- if (stat & (DT_S_COMPOSITE_ERROR | DT_S_READY))
- return stat;
- if (stat & DT_S_DATA_OUT_READY) {
- *data = inb_p(dev->iobase + DT2801_DATA);
- return 0;
- }
- } while (--timeout > 0);
-
- return -ETIME;
-}
-
-static int dt2801_readdata2(struct comedi_device *dev, int *data)
-{
- int lb = 0;
- int hb = 0;
- int ret;
-
- ret = dt2801_readdata(dev, &lb);
- if (ret)
- return ret;
- ret = dt2801_readdata(dev, &hb);
- if (ret)
- return ret;
-
- *data = (hb << 8) + lb;
- return 0;
-}
-
-static int dt2801_writedata(struct comedi_device *dev, unsigned int data)
-{
- int stat = 0;
- int timeout = DT2801_TIMEOUT;
-
- do {
- stat = inb_p(dev->iobase + DT2801_STATUS);
-
- if (stat & DT_S_COMPOSITE_ERROR)
- return stat;
- if (!(stat & DT_S_DATA_IN_FULL)) {
- outb_p(data & 0xff, dev->iobase + DT2801_DATA);
- return 0;
- }
- } while (--timeout > 0);
-
- return -ETIME;
-}
-
-static int dt2801_writedata2(struct comedi_device *dev, unsigned int data)
-{
- int ret;
-
- ret = dt2801_writedata(dev, data & 0xff);
- if (ret < 0)
- return ret;
- ret = dt2801_writedata(dev, data >> 8);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-
-static int dt2801_wait_for_ready(struct comedi_device *dev)
-{
- int timeout = DT2801_TIMEOUT;
- int stat;
-
- stat = inb_p(dev->iobase + DT2801_STATUS);
- if (stat & DT_S_READY)
- return 0;
- do {
- stat = inb_p(dev->iobase + DT2801_STATUS);
-
- if (stat & DT_S_COMPOSITE_ERROR)
- return stat;
- if (stat & DT_S_READY)
- return 0;
- } while (--timeout > 0);
-
- return -ETIME;
-}
-
-static void dt2801_writecmd(struct comedi_device *dev, int command)
-{
- int stat;
-
- dt2801_wait_for_ready(dev);
-
- stat = inb_p(dev->iobase + DT2801_STATUS);
- if (stat & DT_S_COMPOSITE_ERROR) {
- dev_dbg(dev->class_dev,
- "composite-error in %s, ignoring\n", __func__);
- }
- if (!(stat & DT_S_READY))
- dev_dbg(dev->class_dev, "!ready in %s, ignoring\n", __func__);
- outb_p(command, dev->iobase + DT2801_CMD);
-}
-
-static int dt2801_reset(struct comedi_device *dev)
-{
- int board_code = 0;
- unsigned int stat;
- int timeout;
-
- /* pull random data from data port */
- inb_p(dev->iobase + DT2801_DATA);
- inb_p(dev->iobase + DT2801_DATA);
- inb_p(dev->iobase + DT2801_DATA);
- inb_p(dev->iobase + DT2801_DATA);
-
- /* dt2801_writecmd(dev,DT_C_STOP); */
- outb_p(DT_C_STOP, dev->iobase + DT2801_CMD);
-
- /* dt2801_wait_for_ready(dev); */
- usleep_range(100, 200);
- timeout = 10000;
- do {
- stat = inb_p(dev->iobase + DT2801_STATUS);
- if (stat & DT_S_READY)
- break;
- } while (timeout--);
- if (!timeout)
- dev_dbg(dev->class_dev, "timeout 1 status=0x%02x\n", stat);
-
- /* dt2801_readdata(dev,&board_code); */
-
- outb_p(DT_C_RESET, dev->iobase + DT2801_CMD);
- /* dt2801_writecmd(dev,DT_C_RESET); */
-
- usleep_range(100, 200);
- timeout = 10000;
- do {
- stat = inb_p(dev->iobase + DT2801_STATUS);
- if (stat & DT_S_READY)
- break;
- } while (timeout--);
- if (!timeout)
- dev_dbg(dev->class_dev, "timeout 2 status=0x%02x\n", stat);
-
- dt2801_readdata(dev, &board_code);
-
- return board_code;
-}
-
-static int probe_number_of_ai_chans(struct comedi_device *dev)
-{
- int n_chans;
- int stat;
- int data;
-
- for (n_chans = 0; n_chans < 16; n_chans++) {
- dt2801_writecmd(dev, DT_C_READ_ADIM);
- dt2801_writedata(dev, 0);
- dt2801_writedata(dev, n_chans);
- stat = dt2801_readdata2(dev, &data);
-
- if (stat)
- break;
- }
-
- dt2801_reset(dev);
- dt2801_reset(dev);
-
- return n_chans;
-}
-
-static const struct comedi_lrange *dac_range_table[] = {
- &range_bipolar10,
- &range_bipolar5,
- &range_bipolar2_5,
- &range_unipolar10,
- &range_unipolar5
-};
-
-static const struct comedi_lrange *dac_range_lkup(int opt)
-{
- if (opt < 0 || opt >= 5)
- return &range_unknown;
- return dac_range_table[opt];
-}
-
-static const struct comedi_lrange *ai_range_lkup(int type, int opt)
-{
- switch (type) {
- case 0:
- return (opt) ?
- &range_dt2801_ai_pgl_unipolar :
- &range_dt2801_ai_pgl_bipolar;
- case 1:
- return (opt) ? &range_unipolar10 : &range_bipolar10;
- case 2:
- return &range_unipolar5;
- }
- return &range_unknown;
-}
-
-static int dt2801_error(struct comedi_device *dev, int stat)
-{
- if (stat < 0) {
- if (stat == -ETIME)
- dev_dbg(dev->class_dev, "timeout\n");
- else
- dev_dbg(dev->class_dev, "error %d\n", stat);
- return stat;
- }
- dev_dbg(dev->class_dev, "error status 0x%02x, resetting...\n", stat);
-
- dt2801_reset(dev);
- dt2801_reset(dev);
-
- return -EIO;
-}
-
-static int dt2801_ai_insn_read(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data)
-{
- int d;
- int stat;
- int i;
-
- for (i = 0; i < insn->n; i++) {
- dt2801_writecmd(dev, DT_C_READ_ADIM);
- dt2801_writedata(dev, CR_RANGE(insn->chanspec));
- dt2801_writedata(dev, CR_CHAN(insn->chanspec));
- stat = dt2801_readdata2(dev, &d);
-
- if (stat != 0)
- return dt2801_error(dev, stat);
-
- data[i] = d;
- }
-
- return i;
-}
-
-static int dt2801_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);
-
- dt2801_writecmd(dev, DT_C_WRITE_DAIM);
- dt2801_writedata(dev, chan);
- dt2801_writedata2(dev, data[0]);
-
- s->readback[chan] = data[0];
-
- return 1;
-}
-
-static int dt2801_dio_insn_bits(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn,
- unsigned int *data)
-{
- int which = (s == &dev->subdevices[3]) ? 1 : 0;
- unsigned int val = 0;
-
- if (comedi_dio_update_state(s, data)) {
- dt2801_writecmd(dev, DT_C_WRITE_DIG);
- dt2801_writedata(dev, which);
- dt2801_writedata(dev, s->state);
- }
-
- dt2801_writecmd(dev, DT_C_READ_DIG);
- dt2801_writedata(dev, which);
- dt2801_readdata(dev, &val);
-
- data[1] = val;
-
- return insn->n;
-}
-
-static int dt2801_dio_insn_config(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn,
- unsigned int *data)
-{
- int ret;
-
- ret = comedi_dio_insn_config(dev, s, insn, data, 0xff);
- if (ret)
- return ret;
-
- dt2801_writecmd(dev, s->io_bits ? DT_C_SET_DIGOUT : DT_C_SET_DIGIN);
- dt2801_writedata(dev, (s == &dev->subdevices[3]) ? 1 : 0);
-
- return insn->n;
-}
-
-/*
- * options:
- * [0] - i/o base
- * [1] - unused
- * [2] - a/d 0=differential, 1=single-ended
- * [3] - a/d range 0=[-10,10], 1=[0,10]
- * [4] - dac0 range 0=[-10,10], 1=[-5,5], 2=[-2.5,2.5] 3=[0,10], 4=[0,5]
- * [5] - dac1 range 0=[-10,10], 1=[-5,5], 2=[-2.5,2.5] 3=[0,10], 4=[0,5]
- */
-static int dt2801_attach(struct comedi_device *dev, struct comedi_devconfig *it)
-{
- const struct dt2801_board *board;
- struct dt2801_private *devpriv;
- struct comedi_subdevice *s;
- int board_code, type;
- int ret = 0;
- int n_ai_chans;
-
- ret = comedi_request_region(dev, it->options[0], 0x2);
- if (ret)
- return ret;
-
- /* do some checking */
-
- board_code = dt2801_reset(dev);
-
- /* heh. if it didn't work, try it again. */
- if (!board_code)
- board_code = dt2801_reset(dev);
-
- for (type = 0; type < ARRAY_SIZE(boardtypes); type++) {
- if (boardtypes[type].boardcode == board_code)
- goto havetype;
- }
- dev_dbg(dev->class_dev,
- "unrecognized board code=0x%02x, contact author\n", board_code);
- type = 0;
-
-havetype:
- dev->board_ptr = boardtypes + type;
- board = dev->board_ptr;
-
- n_ai_chans = probe_number_of_ai_chans(dev);
-
- ret = comedi_alloc_subdevices(dev, 4);
- if (ret)
- goto out;
-
- devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
- if (!devpriv)
- return -ENOMEM;
-
- dev->board_name = board->name;
-
- s = &dev->subdevices[0];
- /* ai subdevice */
- s->type = COMEDI_SUBD_AI;
- s->subdev_flags = SDF_READABLE | SDF_GROUND;
-#if 1
- s->n_chan = n_ai_chans;
-#else
- if (it->options[2])
- s->n_chan = board->ad_chan;
- else
- s->n_chan = board->ad_chan / 2;
-#endif
- s->maxdata = (1 << board->adbits) - 1;
- s->range_table = ai_range_lkup(board->adrangetype, it->options[3]);
- s->insn_read = dt2801_ai_insn_read;
-
- s = &dev->subdevices[1];
- /* ao subdevice */
- s->type = COMEDI_SUBD_AO;
- s->subdev_flags = SDF_WRITABLE;
- s->n_chan = 2;
- s->maxdata = (1 << board->dabits) - 1;
- s->range_table_list = devpriv->dac_range_types;
- devpriv->dac_range_types[0] = dac_range_lkup(it->options[4]);
- devpriv->dac_range_types[1] = dac_range_lkup(it->options[5]);
- s->insn_write = dt2801_ao_insn_write;
-
- ret = comedi_alloc_subdev_readback(s);
- if (ret)
- return ret;
-
- s = &dev->subdevices[2];
- /* 1st digital subdevice */
- s->type = COMEDI_SUBD_DIO;
- s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
- s->n_chan = 8;
- s->maxdata = 1;
- s->range_table = &range_digital;
- s->insn_bits = dt2801_dio_insn_bits;
- s->insn_config = dt2801_dio_insn_config;
-
- s = &dev->subdevices[3];
- /* 2nd digital subdevice */
- s->type = COMEDI_SUBD_DIO;
- s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
- s->n_chan = 8;
- s->maxdata = 1;
- s->range_table = &range_digital;
- s->insn_bits = dt2801_dio_insn_bits;
- s->insn_config = dt2801_dio_insn_config;
-
- ret = 0;
-out:
- return ret;
-}
-
-static struct comedi_driver dt2801_driver = {
- .driver_name = "dt2801",
- .module = THIS_MODULE,
- .attach = dt2801_attach,
- .detach = comedi_legacy_detach,
-};
-module_comedi_driver(dt2801_driver);
-
-MODULE_AUTHOR("Comedi https://www.comedi.org");
-MODULE_DESCRIPTION("Comedi low-level driver");
-MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2024-06-13 08:26:51 +0000