aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/drivers/staging/comedi/drivers/ke_counter.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/staging/comedi/drivers/ke_counter.c')
-rw-r--r--drivers/staging/comedi/drivers/ke_counter.c209
1 files changed, 116 insertions, 93 deletions
diff --git a/drivers/staging/comedi/drivers/ke_counter.c b/drivers/staging/comedi/drivers/ke_counter.c
index 6b9846fd8c48..ec43c38958de 100644
--- a/drivers/staging/comedi/drivers/ke_counter.c
+++ b/drivers/staging/comedi/drivers/ke_counter.c
@@ -1,92 +1,113 @@
/*
- comedi/drivers/ke_counter.c
- Comedi driver for Kolter-Electronic PCI Counter 1 Card
-
- COMEDI - Linux Control and Measurement Device Interface
- Copyright (C) 2000 David A. Schleef <ds@schleef.org>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-*/
-/*
-Driver: ke_counter
-Description: Driver for Kolter Electronic Counter Card
-Devices: [Kolter Electronic] PCI Counter Card (ke_counter)
-Author: Michael Hillmann
-Updated: Mon, 14 Apr 2008 15:42:42 +0100
-Status: tested
-
-Configuration Options: not applicable, uses PCI auto config
+ * ke_counter.c
+ * Comedi driver for Kolter-Electronic PCI Counter 1 Card
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 2000 David A. Schleef <ds@schleef.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
-This driver is a simple driver to read the counter values from
-Kolter Electronic PCI Counter Card.
-*/
+/*
+ * Driver: ke_counter
+ * Description: Driver for Kolter Electronic Counter Card
+ * Devices: (Kolter Electronic) PCI Counter Card [ke_counter]
+ * Author: Michael Hillmann
+ * Updated: Mon, 14 Apr 2008 15:42:42 +0100
+ * Status: tested
+ *
+ * Configuration Options: not applicable, uses PCI auto config
+ */
#include <linux/module.h>
#include <linux/pci.h>
#include "../comedidev.h"
-#define CNT_CARD_DEVICE_ID 0x0014
+/*
+ * PCI BAR 0 Register I/O map
+ */
+#define KE_RESET_REG(x) (0x00 + ((x) * 0x20))
+#define KE_LATCH_REG(x) (0x00 + ((x) * 0x20))
+#define KE_LSB_REG(x) (0x04 + ((x) * 0x20))
+#define KE_MID_REG(x) (0x08 + ((x) * 0x20))
+#define KE_MSB_REG(x) (0x0c + ((x) * 0x20))
+#define KE_SIGN_REG(x) (0x10 + ((x) * 0x20))
+#define KE_OSC_SEL_REG 0xf8
+#define KE_OSC_SEL_EXT (1 << 0)
+#define KE_OSC_SEL_4MHZ (2 << 0)
+#define KE_OSC_SEL_20MHZ (3 << 0)
+#define KE_DO_REG 0xfc
+
+static int ke_counter_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;
+ int i;
-/*-- counter write ----------------------------------------------------------*/
+ for (i = 0; i < insn->n; i++) {
+ val = data[0];
-/* This should be used only for resetting the counters; maybe it is better
- to make a special command 'reset'. */
-static int cnt_winsn(struct comedi_device *dev,
- struct comedi_subdevice *s, struct comedi_insn *insn,
- unsigned int *data)
-{
- int chan = CR_CHAN(insn->chanspec);
-
- outb((unsigned char)((data[0] >> 24) & 0xff),
- dev->iobase + chan * 0x20 + 0x10);
- outb((unsigned char)((data[0] >> 16) & 0xff),
- dev->iobase + chan * 0x20 + 0x0c);
- outb((unsigned char)((data[0] >> 8) & 0xff),
- dev->iobase + chan * 0x20 + 0x08);
- outb((unsigned char)((data[0] >> 0) & 0xff),
- dev->iobase + chan * 0x20 + 0x04);
-
- /* return the number of samples written */
- return 1;
-}
+ /* Order matters */
+ outb((val >> 24) & 0xff, dev->iobase + KE_SIGN_REG(chan));
+ outb((val >> 16) & 0xff, dev->iobase + KE_MSB_REG(chan));
+ outb((val >> 8) & 0xff, dev->iobase + KE_MID_REG(chan));
+ outb((val >> 0) & 0xff, dev->iobase + KE_LSB_REG(chan));
+ }
-/*-- counter read -----------------------------------------------------------*/
+ return insn->n;
+}
-static int cnt_rinsn(struct comedi_device *dev,
- struct comedi_subdevice *s, struct comedi_insn *insn,
- unsigned int *data)
+static int ke_counter_insn_read(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
{
- unsigned char a0, a1, a2, a3, a4;
- int chan = CR_CHAN(insn->chanspec);
- int result;
+ unsigned int chan = CR_CHAN(insn->chanspec);
+ unsigned int val;
+ int i;
- a0 = inb(dev->iobase + chan * 0x20);
- a1 = inb(dev->iobase + chan * 0x20 + 0x04);
- a2 = inb(dev->iobase + chan * 0x20 + 0x08);
- a3 = inb(dev->iobase + chan * 0x20 + 0x0c);
- a4 = inb(dev->iobase + chan * 0x20 + 0x10);
+ for (i = 0; i < insn->n; i++) {
+ /* Order matters */
+ inb(dev->iobase + KE_LATCH_REG(chan));
- result = (a1 + (a2 * 256) + (a3 * 65536));
- if (a4 > 0)
- result = result - s->maxdata;
+ val = inb(dev->iobase + KE_LSB_REG(chan));
+ val |= (inb(dev->iobase + KE_MID_REG(chan)) << 8);
+ val |= (inb(dev->iobase + KE_MSB_REG(chan)) << 16);
+ val |= (inb(dev->iobase + KE_SIGN_REG(chan)) << 24);
- *data = (unsigned int)result;
+ data[i] = val;
+ }
- /* return the number of samples read */
- return 1;
+ return insn->n;
}
-static int cnt_auto_attach(struct comedi_device *dev,
- unsigned long context_unused)
+static int ke_counter_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 + KE_DO_REG);
+
+ data[1] = s->state;
+
+ return insn->n;
+}
+
+static int ke_counter_auto_attach(struct comedi_device *dev,
+ unsigned long context_unused)
{
struct pci_dev *pcidev = comedi_to_pci_dev(dev);
struct comedi_subdevice *s;
@@ -97,30 +118,32 @@ static int cnt_auto_attach(struct comedi_device *dev,
return ret;
dev->iobase = pci_resource_start(pcidev, 0);
- ret = comedi_alloc_subdevices(dev, 1);
+ ret = comedi_alloc_subdevices(dev, 2);
if (ret)
return ret;
s = &dev->subdevices[0];
- dev->read_subdev = s;
-
- s->type = COMEDI_SUBD_COUNTER;
- s->subdev_flags = SDF_READABLE /* | SDF_COMMON */ ;
- s->n_chan = 3;
- s->maxdata = 0x00ffffff;
- s->insn_read = cnt_rinsn;
- s->insn_write = cnt_winsn;
-
- /* select 20MHz clock */
- outb(3, dev->iobase + 248);
-
- /* reset all counters */
- outb(0, dev->iobase);
- outb(0, dev->iobase + 0x20);
- outb(0, dev->iobase + 0x40);
-
- dev_info(dev->class_dev, "%s: %s attached\n",
- dev->driver->driver_name, dev->board_name);
+ s->type = COMEDI_SUBD_COUNTER;
+ s->subdev_flags = SDF_READABLE;
+ s->n_chan = 3;
+ s->maxdata = 0x01ffffff;
+ s->range_table = &range_unknown;
+ s->insn_read = ke_counter_insn_read;
+ s->insn_write = ke_counter_insn_write;
+
+ s = &dev->subdevices[1];
+ s->type = COMEDI_SUBD_DO;
+ s->subdev_flags = SDF_WRITABLE;
+ s->n_chan = 3;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+ s->insn_bits = ke_counter_do_insn_bits;
+
+ outb(KE_OSC_SEL_20MHZ, dev->iobase + KE_OSC_SEL_REG);
+
+ outb(0, dev->iobase + KE_RESET_REG(0));
+ outb(0, dev->iobase + KE_RESET_REG(1));
+ outb(0, dev->iobase + KE_RESET_REG(2));
return 0;
}
@@ -128,7 +151,7 @@ static int cnt_auto_attach(struct comedi_device *dev,
static struct comedi_driver ke_counter_driver = {
.driver_name = "ke_counter",
.module = THIS_MODULE,
- .auto_attach = cnt_auto_attach,
+ .auto_attach = ke_counter_auto_attach,
.detach = comedi_pci_disable,
};
@@ -140,7 +163,7 @@ static int ke_counter_pci_probe(struct pci_dev *dev,
}
static const struct pci_device_id ke_counter_pci_table[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_KOLTER, CNT_CARD_DEVICE_ID) },
+ { PCI_DEVICE(PCI_VENDOR_ID_KOLTER, 0x0014) },
{ 0 }
};
MODULE_DEVICE_TABLE(pci, ke_counter_pci_table);
@@ -154,5 +177,5 @@ static struct pci_driver ke_counter_pci_driver = {
module_comedi_pci_driver(ke_counter_driver, ke_counter_pci_driver);
MODULE_AUTHOR("Comedi http://www.comedi.org");
-MODULE_DESCRIPTION("Comedi low-level driver");
+MODULE_DESCRIPTION("Comedi driver for Kolter Electronic Counter Card");
MODULE_LICENSE("GPL");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.