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path: root/drivers/comedi/drivers/cb_das16_cs.c
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Diffstat (limited to 'drivers/comedi/drivers/cb_das16_cs.c')
-rw-r--r--drivers/comedi/drivers/cb_das16_cs.c456
1 files changed, 456 insertions, 0 deletions
diff --git a/drivers/comedi/drivers/cb_das16_cs.c b/drivers/comedi/drivers/cb_das16_cs.c
new file mode 100644
index 000000000000..a5d171e71c33
--- /dev/null
+++ b/drivers/comedi/drivers/cb_das16_cs.c
@@ -0,0 +1,456 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * cb_das16_cs.c
+ * Driver for Computer Boards PC-CARD DAS16/16.
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 2000, 2001, 2002 David A. Schleef <ds@schleef.org>
+ *
+ * PCMCIA support code for this driver is adapted from the dummy_cs.c
+ * driver of the Linux PCMCIA Card Services package.
+ *
+ * The initial developer of the original code is David A. Hinds
+ * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+ */
+
+/*
+ * Driver: cb_das16_cs
+ * Description: Computer Boards PC-CARD DAS16/16
+ * Devices: [ComputerBoards] PC-CARD DAS16/16 (cb_das16_cs),
+ * PC-CARD DAS16/16-AO
+ * Author: ds
+ * Updated: Mon, 04 Nov 2002 20:04:21 -0800
+ * Status: experimental
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+
+#include "../comedi_pcmcia.h"
+
+#include "comedi_8254.h"
+
+/*
+ * Register I/O map
+ */
+#define DAS16CS_AI_DATA_REG 0x00
+#define DAS16CS_AI_MUX_REG 0x02
+#define DAS16CS_AI_MUX_HI_CHAN(x) (((x) & 0xf) << 4)
+#define DAS16CS_AI_MUX_LO_CHAN(x) (((x) & 0xf) << 0)
+#define DAS16CS_AI_MUX_SINGLE_CHAN(x) (DAS16CS_AI_MUX_HI_CHAN(x) | \
+ DAS16CS_AI_MUX_LO_CHAN(x))
+#define DAS16CS_MISC1_REG 0x04
+#define DAS16CS_MISC1_INTE BIT(15) /* 1=enable; 0=disable */
+#define DAS16CS_MISC1_INT_SRC(x) (((x) & 0x7) << 12) /* interrupt src */
+#define DAS16CS_MISC1_INT_SRC_NONE DAS16CS_MISC1_INT_SRC(0)
+#define DAS16CS_MISC1_INT_SRC_PACER DAS16CS_MISC1_INT_SRC(1)
+#define DAS16CS_MISC1_INT_SRC_EXT DAS16CS_MISC1_INT_SRC(2)
+#define DAS16CS_MISC1_INT_SRC_FNE DAS16CS_MISC1_INT_SRC(3)
+#define DAS16CS_MISC1_INT_SRC_FHF DAS16CS_MISC1_INT_SRC(4)
+#define DAS16CS_MISC1_INT_SRC_EOS DAS16CS_MISC1_INT_SRC(5)
+#define DAS16CS_MISC1_INT_SRC_MASK DAS16CS_MISC1_INT_SRC(7)
+#define DAS16CS_MISC1_OVR BIT(10) /* ro - 1=FIFO overflow */
+#define DAS16CS_MISC1_AI_CONV(x) (((x) & 0x3) << 8) /* AI convert src */
+#define DAS16CS_MISC1_AI_CONV_SW DAS16CS_MISC1_AI_CONV(0)
+#define DAS16CS_MISC1_AI_CONV_EXT_NEG DAS16CS_MISC1_AI_CONV(1)
+#define DAS16CS_MISC1_AI_CONV_EXT_POS DAS16CS_MISC1_AI_CONV(2)
+#define DAS16CS_MISC1_AI_CONV_PACER DAS16CS_MISC1_AI_CONV(3)
+#define DAS16CS_MISC1_AI_CONV_MASK DAS16CS_MISC1_AI_CONV(3)
+#define DAS16CS_MISC1_EOC BIT(7) /* ro - 0=busy; 1=ready */
+#define DAS16CS_MISC1_SEDIFF BIT(5) /* 0=diff; 1=se */
+#define DAS16CS_MISC1_INTB BIT(4) /* ro - 0=latched; 1=cleared */
+#define DAS16CS_MISC1_MA_MASK (0xf << 0) /* ro - current ai mux */
+#define DAS16CS_MISC1_DAC1CS BIT(3) /* wo - DAC1 chip select */
+#define DAS16CS_MISC1_DACCLK BIT(2) /* wo - Serial DAC clock */
+#define DAS16CS_MISC1_DACSD BIT(1) /* wo - Serial DAC data */
+#define DAS16CS_MISC1_DAC0CS BIT(0) /* wo - DAC0 chip select */
+#define DAS16CS_MISC1_DAC_MASK (0x0f << 0)
+#define DAS16CS_MISC2_REG 0x06
+#define DAS16CS_MISC2_BME BIT(14) /* 1=burst enable; 0=disable */
+#define DAS16CS_MISC2_AI_GAIN(x) (((x) & 0xf) << 8) /* AI gain */
+#define DAS16CS_MISC2_AI_GAIN_1 DAS16CS_MISC2_AI_GAIN(4) /* +/-10V */
+#define DAS16CS_MISC2_AI_GAIN_2 DAS16CS_MISC2_AI_GAIN(0) /* +/-5V */
+#define DAS16CS_MISC2_AI_GAIN_4 DAS16CS_MISC2_AI_GAIN(1) /* +/-2.5V */
+#define DAS16CS_MISC2_AI_GAIN_8 DAS16CS_MISC2_AI_GAIN(2) /* +-1.25V */
+#define DAS16CS_MISC2_AI_GAIN_MASK DAS16CS_MISC2_AI_GAIN(0xf)
+#define DAS16CS_MISC2_UDIR BIT(7) /* 1=dio7:4 output; 0=input */
+#define DAS16CS_MISC2_LDIR BIT(6) /* 1=dio3:0 output; 0=input */
+#define DAS16CS_MISC2_TRGPOL BIT(5) /* 1=active lo; 0=hi */
+#define DAS16CS_MISC2_TRGSEL BIT(4) /* 1=edge; 0=level */
+#define DAS16CS_MISC2_FFNE BIT(3) /* ro - 1=FIFO not empty */
+#define DAS16CS_MISC2_TRGCLR BIT(3) /* wo - 1=clr (monstable) */
+#define DAS16CS_MISC2_CLK2 BIT(2) /* 1=10 MHz; 0=1 MHz */
+#define DAS16CS_MISC2_CTR1 BIT(1) /* 1=int. 100 kHz; 0=ext. clk */
+#define DAS16CS_MISC2_TRG0 BIT(0) /* 1=enable; 0=disable */
+#define DAS16CS_TIMER_BASE 0x08
+#define DAS16CS_DIO_REG 0x10
+
+struct das16cs_board {
+ const char *name;
+ int device_id;
+ unsigned int has_ao:1;
+ unsigned int has_4dio:1;
+};
+
+static const struct das16cs_board das16cs_boards[] = {
+ {
+ .name = "PC-CARD DAS16/16-AO",
+ .device_id = 0x0039,
+ .has_ao = 1,
+ .has_4dio = 1,
+ }, {
+ .name = "PCM-DAS16s/16",
+ .device_id = 0x4009,
+ }, {
+ .name = "PC-CARD DAS16/16",
+ .device_id = 0x0000, /* unknown */
+ },
+};
+
+struct das16cs_private {
+ unsigned short misc1;
+ unsigned short misc2;
+};
+
+static const struct comedi_lrange das16cs_ai_range = {
+ 4, {
+ BIP_RANGE(10),
+ BIP_RANGE(5),
+ BIP_RANGE(2.5),
+ BIP_RANGE(1.25),
+ }
+};
+
+static int das16cs_ai_eoc(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned long context)
+{
+ unsigned int status;
+
+ status = inw(dev->iobase + DAS16CS_MISC1_REG);
+ if (status & DAS16CS_MISC1_EOC)
+ return 0;
+ return -EBUSY;
+}
+
+static int das16cs_ai_insn_read(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct das16cs_private *devpriv = dev->private;
+ int chan = CR_CHAN(insn->chanspec);
+ int range = CR_RANGE(insn->chanspec);
+ int aref = CR_AREF(insn->chanspec);
+ int ret;
+ int i;
+
+ outw(DAS16CS_AI_MUX_SINGLE_CHAN(chan),
+ dev->iobase + DAS16CS_AI_MUX_REG);
+
+ /* disable interrupts, software convert */
+ devpriv->misc1 &= ~(DAS16CS_MISC1_INTE | DAS16CS_MISC1_INT_SRC_MASK |
+ DAS16CS_MISC1_AI_CONV_MASK);
+ if (aref == AREF_DIFF)
+ devpriv->misc1 &= ~DAS16CS_MISC1_SEDIFF;
+ else
+ devpriv->misc1 |= DAS16CS_MISC1_SEDIFF;
+ outw(devpriv->misc1, dev->iobase + DAS16CS_MISC1_REG);
+
+ devpriv->misc2 &= ~(DAS16CS_MISC2_BME | DAS16CS_MISC2_AI_GAIN_MASK);
+ switch (range) {
+ case 0:
+ devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_1;
+ break;
+ case 1:
+ devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_2;
+ break;
+ case 2:
+ devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_4;
+ break;
+ case 3:
+ devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_8;
+ break;
+ }
+ outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG);
+
+ for (i = 0; i < insn->n; i++) {
+ outw(0, dev->iobase + DAS16CS_AI_DATA_REG);
+
+ ret = comedi_timeout(dev, s, insn, das16cs_ai_eoc, 0);
+ if (ret)
+ return ret;
+
+ data[i] = inw(dev->iobase + DAS16CS_AI_DATA_REG);
+ }
+
+ return i;
+}
+
+static int das16cs_ao_insn_write(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct das16cs_private *devpriv = dev->private;
+ unsigned int chan = CR_CHAN(insn->chanspec);
+ unsigned int val = s->readback[chan];
+ unsigned short misc1;
+ int bit;
+ int i;
+
+ for (i = 0; i < insn->n; i++) {
+ val = data[i];
+
+ outw(devpriv->misc1, dev->iobase + DAS16CS_MISC1_REG);
+ udelay(1);
+
+ /* raise the DACxCS line for the non-selected channel */
+ misc1 = devpriv->misc1 & ~DAS16CS_MISC1_DAC_MASK;
+ if (chan)
+ misc1 |= DAS16CS_MISC1_DAC0CS;
+ else
+ misc1 |= DAS16CS_MISC1_DAC1CS;
+
+ outw(misc1, dev->iobase + DAS16CS_MISC1_REG);
+ udelay(1);
+
+ for (bit = 15; bit >= 0; bit--) {
+ if ((val >> bit) & 0x1)
+ misc1 |= DAS16CS_MISC1_DACSD;
+ else
+ misc1 &= ~DAS16CS_MISC1_DACSD;
+ outw(misc1, dev->iobase + DAS16CS_MISC1_REG);
+ udelay(1);
+ outw(misc1 | DAS16CS_MISC1_DACCLK,
+ dev->iobase + DAS16CS_MISC1_REG);
+ udelay(1);
+ }
+ /*
+ * Make both DAC0CS and DAC1CS high to load
+ * the new data and update analog the output
+ */
+ outw(misc1 | DAS16CS_MISC1_DAC0CS | DAS16CS_MISC1_DAC1CS,
+ dev->iobase + DAS16CS_MISC1_REG);
+ }
+ s->readback[chan] = val;
+
+ return insn->n;
+}
+
+static int das16cs_dio_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ if (comedi_dio_update_state(s, data))
+ outw(s->state, dev->iobase + DAS16CS_DIO_REG);
+
+ data[1] = inw(dev->iobase + DAS16CS_DIO_REG);
+
+ return insn->n;
+}
+
+static int das16cs_dio_insn_config(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct das16cs_private *devpriv = dev->private;
+ unsigned int chan = CR_CHAN(insn->chanspec);
+ unsigned int mask;
+ int ret;
+
+ if (chan < 4)
+ mask = 0x0f;
+ else
+ mask = 0xf0;
+
+ ret = comedi_dio_insn_config(dev, s, insn, data, mask);
+ if (ret)
+ return ret;
+
+ if (s->io_bits & 0xf0)
+ devpriv->misc2 |= DAS16CS_MISC2_UDIR;
+ else
+ devpriv->misc2 &= ~DAS16CS_MISC2_UDIR;
+ if (s->io_bits & 0x0f)
+ devpriv->misc2 |= DAS16CS_MISC2_LDIR;
+ else
+ devpriv->misc2 &= ~DAS16CS_MISC2_LDIR;
+ outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG);
+
+ return insn->n;
+}
+
+static int das16cs_counter_insn_config(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct das16cs_private *devpriv = dev->private;
+
+ switch (data[0]) {
+ case INSN_CONFIG_SET_CLOCK_SRC:
+ switch (data[1]) {
+ case 0: /* internal 100 kHz */
+ devpriv->misc2 |= DAS16CS_MISC2_CTR1;
+ break;
+ case 1: /* external */
+ devpriv->misc2 &= ~DAS16CS_MISC2_CTR1;
+ break;
+ default:
+ return -EINVAL;
+ }
+ outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG);
+ break;
+ case INSN_CONFIG_GET_CLOCK_SRC:
+ if (devpriv->misc2 & DAS16CS_MISC2_CTR1) {
+ data[1] = 0;
+ data[2] = I8254_OSC_BASE_100KHZ;
+ } else {
+ data[1] = 1;
+ data[2] = 0; /* unknown */
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return insn->n;
+}
+
+static const void *das16cs_find_boardinfo(struct comedi_device *dev,
+ struct pcmcia_device *link)
+{
+ const struct das16cs_board *board;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(das16cs_boards); i++) {
+ board = &das16cs_boards[i];
+ if (board->device_id == link->card_id)
+ return board;
+ }
+
+ return NULL;
+}
+
+static int das16cs_auto_attach(struct comedi_device *dev,
+ unsigned long context)
+{
+ struct pcmcia_device *link = comedi_to_pcmcia_dev(dev);
+ const struct das16cs_board *board;
+ struct das16cs_private *devpriv;
+ struct comedi_subdevice *s;
+ int ret;
+
+ board = das16cs_find_boardinfo(dev, link);
+ if (!board)
+ return -ENODEV;
+ dev->board_ptr = board;
+ dev->board_name = board->name;
+
+ link->config_flags |= CONF_AUTO_SET_IO | CONF_ENABLE_IRQ;
+ ret = comedi_pcmcia_enable(dev, NULL);
+ if (ret)
+ return ret;
+ dev->iobase = link->resource[0]->start;
+
+ link->priv = dev;
+
+ devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
+ if (!devpriv)
+ return -ENOMEM;
+
+ dev->pacer = comedi_8254_init(dev->iobase + DAS16CS_TIMER_BASE,
+ I8254_OSC_BASE_10MHZ, I8254_IO16, 0);
+ if (!dev->pacer)
+ return -ENOMEM;
+
+ ret = comedi_alloc_subdevices(dev, 4);
+ if (ret)
+ return ret;
+
+ /* Analog Input subdevice */
+ s = &dev->subdevices[0];
+ s->type = COMEDI_SUBD_AI;
+ s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF;
+ s->n_chan = 16;
+ s->maxdata = 0xffff;
+ s->range_table = &das16cs_ai_range;
+ s->insn_read = das16cs_ai_insn_read;
+
+ /* Analog Output subdevice */
+ s = &dev->subdevices[1];
+ if (board->has_ao) {
+ s->type = COMEDI_SUBD_AO;
+ s->subdev_flags = SDF_WRITABLE;
+ s->n_chan = 2;
+ s->maxdata = 0xffff;
+ s->range_table = &range_bipolar10;
+ s->insn_write = &das16cs_ao_insn_write;
+
+ ret = comedi_alloc_subdev_readback(s);
+ if (ret)
+ return ret;
+ } else {
+ s->type = COMEDI_SUBD_UNUSED;
+ }
+
+ /* Digital I/O subdevice */
+ s = &dev->subdevices[2];
+ s->type = COMEDI_SUBD_DIO;
+ s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
+ s->n_chan = board->has_4dio ? 4 : 8;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+ s->insn_bits = das16cs_dio_insn_bits;
+ s->insn_config = das16cs_dio_insn_config;
+
+ /* Counter subdevice (8254) */
+ s = &dev->subdevices[3];
+ comedi_8254_subdevice_init(s, dev->pacer);
+
+ dev->pacer->insn_config = das16cs_counter_insn_config;
+
+ /* counters 1 and 2 are used internally for the pacer */
+ comedi_8254_set_busy(dev->pacer, 1, true);
+ comedi_8254_set_busy(dev->pacer, 2, true);
+
+ return 0;
+}
+
+static struct comedi_driver driver_das16cs = {
+ .driver_name = "cb_das16_cs",
+ .module = THIS_MODULE,
+ .auto_attach = das16cs_auto_attach,
+ .detach = comedi_pcmcia_disable,
+};
+
+static int das16cs_pcmcia_attach(struct pcmcia_device *link)
+{
+ return comedi_pcmcia_auto_config(link, &driver_das16cs);
+}
+
+static const struct pcmcia_device_id das16cs_id_table[] = {
+ PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x0039),
+ PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x4009),
+ PCMCIA_DEVICE_NULL
+};
+MODULE_DEVICE_TABLE(pcmcia, das16cs_id_table);
+
+static struct pcmcia_driver das16cs_driver = {
+ .name = "cb_das16_cs",
+ .owner = THIS_MODULE,
+ .id_table = das16cs_id_table,
+ .probe = das16cs_pcmcia_attach,
+ .remove = comedi_pcmcia_auto_unconfig,
+};
+module_comedi_pcmcia_driver(driver_das16cs, das16cs_driver);
+
+MODULE_AUTHOR("David A. Schleef <ds@schleef.org>");
+MODULE_DESCRIPTION("Comedi driver for Computer Boards PC-CARD DAS16/16");
+MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2024-06-14 22:36:03 +0000