--- /dev/null
+/*
+ comedi/drivers/ni_6527.c
+ driver for National Instruments PCI-6527
+
+ COMEDI - Linux Control and Measurement Device Interface
+ Copyright (C) 1999,2002,2003 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.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+/*
+Driver: ni_6527
+Description: National Instruments 6527
+Author: ds
+Status: works
+Devices: [National Instruments] PCI-6527 (ni6527), PXI-6527
+Updated: Sat, 25 Jan 2003 13:24:40 -0800
+
+
+*/
+
+/*
+ Manuals (available from ftp://ftp.natinst.com/support/manuals)
+
+ 370106b.pdf 6527 Register Level Programmer Manual
+
+ */
+
+#define DEBUG 1
+#define DEBUG_FLAGS
+
+#include "../comedidev.h"
+
+#include "mite.h"
+
+#define NI6527_DIO_SIZE 4096
+#define NI6527_MITE_SIZE 4096
+
+#define Port_Register(x) (0x00+(x))
+#define ID_Register 0x06
+
+#define Clear_Register 0x07
+#define ClrEdge 0x08
+#define ClrOverflow 0x04
+#define ClrFilter 0x02
+#define ClrInterval 0x01
+
+#define Filter_Interval(x) (0x08+(x))
+#define Filter_Enable(x) (0x0c+(x))
+
+#define Change_Status 0x14
+#define MasterInterruptStatus 0x04
+#define Overflow 0x02
+#define EdgeStatus 0x01
+
+#define Master_Interrupt_Control 0x15
+#define FallingEdgeIntEnable 0x10
+#define RisingEdgeIntEnable 0x08
+#define MasterInterruptEnable 0x04
+#define OverflowIntEnable 0x02
+#define EdgeIntEnable 0x01
+
+#define Rising_Edge_Detection_Enable(x) (0x018+(x))
+#define Falling_Edge_Detection_Enable(x) (0x020+(x))
+
+static int ni6527_attach(struct comedi_device * dev, struct comedi_devconfig * it);
+static int ni6527_detach(struct comedi_device * dev);
+static struct comedi_driver driver_ni6527 = {
+ driver_name:"ni6527",
+ module:THIS_MODULE,
+ attach:ni6527_attach,
+ detach:ni6527_detach,
+};
+
+struct ni6527_board {
+
+ int dev_id;
+ const char *name;
+};
+
+static const struct ni6527_board ni6527_boards[] = {
+ {
+ dev_id: 0x2b20,
+ name: "pci-6527",
+ },
+ {
+ dev_id: 0x2b10,
+ name: "pxi-6527",
+ },
+};
+
+#define n_ni6527_boards (sizeof(ni6527_boards)/sizeof(ni6527_boards[0]))
+#define this_board ((const struct ni6527_board *)dev->board_ptr)
+
+static DEFINE_PCI_DEVICE_TABLE(ni6527_pci_table) = {
+ {PCI_VENDOR_ID_NATINST, 0x2b10, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {PCI_VENDOR_ID_NATINST, 0x2b20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {0}
+};
+
+MODULE_DEVICE_TABLE(pci, ni6527_pci_table);
+
+struct ni6527_private {
+ struct mite_struct *mite;
+ unsigned int filter_interval;
+ unsigned int filter_enable;
+};
+
+#define devpriv ((struct ni6527_private *)dev->private)
+
+static int ni6527_find_device(struct comedi_device * dev, int bus, int slot);
+
+static int ni6527_di_insn_config(struct comedi_device * dev, struct comedi_subdevice * s,
+ struct comedi_insn * insn, unsigned int * data)
+{
+ int chan = CR_CHAN(insn->chanspec);
+ unsigned int interval;
+
+ if (insn->n != 2)
+ return -EINVAL;
+
+ if (data[0] != INSN_CONFIG_FILTER)
+ return -EINVAL;
+
+ if (data[1]) {
+ interval = (data[1] + 100) / 200;
+ data[1] = interval * 200;
+
+ if (interval != devpriv->filter_interval) {
+ writeb(interval & 0xff,
+ devpriv->mite->daq_io_addr +
+ Filter_Interval(0));
+ writeb((interval >> 8) & 0xff,
+ devpriv->mite->daq_io_addr +
+ Filter_Interval(1));
+ writeb((interval >> 16) & 0x0f,
+ devpriv->mite->daq_io_addr +
+ Filter_Interval(2));
+
+ writeb(ClrInterval,
+ devpriv->mite->daq_io_addr + Clear_Register);
+
+ devpriv->filter_interval = interval;
+ }
+
+ devpriv->filter_enable |= 1 << chan;
+ } else {
+ devpriv->filter_enable &= ~(1 << chan);
+ }
+
+ writeb(devpriv->filter_enable,
+ devpriv->mite->daq_io_addr + Filter_Enable(0));
+ writeb(devpriv->filter_enable >> 8,
+ devpriv->mite->daq_io_addr + Filter_Enable(1));
+ writeb(devpriv->filter_enable >> 16,
+ devpriv->mite->daq_io_addr + Filter_Enable(2));
+
+ return 2;
+}
+
+static int ni6527_di_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
+ struct comedi_insn * insn, unsigned int * data)
+{
+ if (insn->n != 2)
+ return -EINVAL;
+
+ data[1] = readb(devpriv->mite->daq_io_addr + Port_Register(0));
+ data[1] |= readb(devpriv->mite->daq_io_addr + Port_Register(1)) << 8;
+ data[1] |= readb(devpriv->mite->daq_io_addr + Port_Register(2)) << 16;
+
+ return 2;
+}
+
+static int ni6527_do_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
+ struct comedi_insn * insn, unsigned int * data)
+{
+ if (insn->n != 2)
+ return -EINVAL;
+ if (data[0]) {
+ s->state &= ~data[0];
+ s->state |= (data[0] & data[1]);
+
+ /* The open relay state on the board cooresponds to 1,
+ * but in Comedi, it is represented by 0. */
+ if (data[0] & 0x0000ff) {
+ writeb((s->state ^ 0xff),
+ devpriv->mite->daq_io_addr + Port_Register(3));
+ }
+ if (data[0] & 0x00ff00) {
+ writeb((s->state >> 8) ^ 0xff,
+ devpriv->mite->daq_io_addr + Port_Register(4));
+ }
+ if (data[0] & 0xff0000) {
+ writeb((s->state >> 16) ^ 0xff,
+ devpriv->mite->daq_io_addr + Port_Register(5));
+ }
+ }
+ data[1] = s->state;
+
+ return 2;
+}
+
+static irqreturn_t ni6527_interrupt(int irq, void *d PT_REGS_ARG)
+{
+ struct comedi_device *dev = d;
+ struct comedi_subdevice *s = dev->subdevices + 2;
+ unsigned int status;
+
+ status = readb(devpriv->mite->daq_io_addr + Change_Status);
+ if ((status & MasterInterruptStatus) == 0)
+ return IRQ_NONE;
+ if ((status & EdgeStatus) == 0)
+ return IRQ_NONE;
+
+ writeb(ClrEdge | ClrOverflow,
+ devpriv->mite->daq_io_addr + Clear_Register);
+
+ comedi_buf_put(s->async, 0);
+ s->async->events |= COMEDI_CB_EOS;
+ comedi_event(dev, s);
+ return IRQ_HANDLED;
+}
+
+static int ni6527_intr_cmdtest(struct comedi_device * dev, struct comedi_subdevice * s,
+ struct comedi_cmd * cmd)
+{
+ int err = 0;
+ int tmp;
+
+ /* step 1: make sure trigger sources are trivially valid */
+
+ tmp = cmd->start_src;
+ cmd->start_src &= TRIG_NOW;
+ if (!cmd->start_src || tmp != cmd->start_src)
+ err++;
+
+ tmp = cmd->scan_begin_src;
+ cmd->scan_begin_src &= TRIG_OTHER;
+ if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
+ err++;
+
+ tmp = cmd->convert_src;
+ cmd->convert_src &= TRIG_FOLLOW;
+ if (!cmd->convert_src || tmp != cmd->convert_src)
+ err++;
+
+ tmp = cmd->scan_end_src;
+ cmd->scan_end_src &= TRIG_COUNT;
+ if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
+ err++;
+
+ tmp = cmd->stop_src;
+ cmd->stop_src &= TRIG_COUNT;
+ if (!cmd->stop_src || tmp != cmd->stop_src)
+ err++;
+
+ if (err)
+ return 1;
+
+ /* step 2: make sure trigger sources are unique and mutually compatible */
+
+ if (err)
+ return 2;
+
+ /* step 3: make sure arguments are trivially compatible */
+
+ if (cmd->start_arg != 0) {
+ cmd->start_arg = 0;
+ err++;
+ }
+ if (cmd->scan_begin_arg != 0) {
+ cmd->scan_begin_arg = 0;
+ err++;
+ }
+ if (cmd->convert_arg != 0) {
+ cmd->convert_arg = 0;
+ err++;
+ }
+
+ if (cmd->scan_end_arg != 1) {
+ cmd->scan_end_arg = 1;
+ err++;
+ }
+ if (cmd->stop_arg != 0) {
+ cmd->stop_arg = 0;
+ err++;
+ }
+
+ if (err)
+ return 3;
+
+ /* step 4: fix up any arguments */
+
+ if (err)
+ return 4;
+
+ return 0;
+}
+
+static int ni6527_intr_cmd(struct comedi_device * dev, struct comedi_subdevice * s)
+{
+ //struct comedi_cmd *cmd = &s->async->cmd;
+
+ writeb(ClrEdge | ClrOverflow,
+ devpriv->mite->daq_io_addr + Clear_Register);
+ writeb(FallingEdgeIntEnable | RisingEdgeIntEnable |
+ MasterInterruptEnable | EdgeIntEnable,
+ devpriv->mite->daq_io_addr + Master_Interrupt_Control);
+
+ return 0;
+}
+
+static int ni6527_intr_cancel(struct comedi_device * dev, struct comedi_subdevice * s)
+{
+ writeb(0x00, devpriv->mite->daq_io_addr + Master_Interrupt_Control);
+
+ return 0;
+}
+
+static int ni6527_intr_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
+ struct comedi_insn * insn, unsigned int * data)
+{
+ if (insn->n < 1)
+ return -EINVAL;
+
+ data[1] = 0;
+ return 2;
+}
+
+static int ni6527_intr_insn_config(struct comedi_device * dev, struct comedi_subdevice * s,
+ struct comedi_insn * insn, unsigned int * data)
+{
+ if (insn->n < 1)
+ return -EINVAL;
+ if (data[0] != INSN_CONFIG_CHANGE_NOTIFY)
+ return -EINVAL;
+
+ writeb(data[1],
+ devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(0));
+ writeb(data[1] >> 8,
+ devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(1));
+ writeb(data[1] >> 16,
+ devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(2));
+
+ writeb(data[2],
+ devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(0));
+ writeb(data[2] >> 8,
+ devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(1));
+ writeb(data[2] >> 16,
+ devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(2));
+
+ return 2;
+}
+
+static int ni6527_attach(struct comedi_device * dev, struct comedi_devconfig * it)
+{
+ struct comedi_subdevice *s;
+ int ret;
+
+ printk("comedi%d: ni6527:", dev->minor);
+
+ if ((ret = alloc_private(dev, sizeof(struct ni6527_private))) < 0)
+ return ret;
+
+ ret = ni6527_find_device(dev, it->options[0], it->options[1]);
+ if (ret < 0)
+ return ret;
+
+ ret = mite_setup(devpriv->mite);
+ if (ret < 0) {
+ printk("error setting up mite\n");
+ return ret;
+ }
+
+ dev->board_name = this_board->name;
+ printk(" %s", dev->board_name);
+
+ printk(" ID=0x%02x", readb(devpriv->mite->daq_io_addr + ID_Register));
+
+ if ((ret = alloc_subdevices(dev, 3)) < 0)
+ return ret;
+
+ s = dev->subdevices + 0;
+ s->type = COMEDI_SUBD_DI;
+ s->subdev_flags = SDF_READABLE;
+ s->n_chan = 24;
+ s->range_table = &range_digital;
+ s->maxdata = 1;
+ s->insn_config = ni6527_di_insn_config;
+ s->insn_bits = ni6527_di_insn_bits;
+
+ s = dev->subdevices + 1;
+ s->type = COMEDI_SUBD_DO;
+ s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
+ s->n_chan = 24;
+ s->range_table = &range_unknown; /* FIXME: actually conductance */
+ s->maxdata = 1;
+ s->insn_bits = ni6527_do_insn_bits;
+
+ s = dev->subdevices + 2;
+ dev->read_subdev = s;
+ s->type = COMEDI_SUBD_DI;
+ s->subdev_flags = SDF_READABLE | SDF_CMD_READ;
+ s->n_chan = 1;
+ s->range_table = &range_unknown;
+ s->maxdata = 1;
+ s->do_cmdtest = ni6527_intr_cmdtest;
+ s->do_cmd = ni6527_intr_cmd;
+ s->cancel = ni6527_intr_cancel;
+ s->insn_bits = ni6527_intr_insn_bits;
+ s->insn_config = ni6527_intr_insn_config;
+
+ writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(0));
+ writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(1));
+ writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(2));
+
+ writeb(ClrEdge | ClrOverflow | ClrFilter | ClrInterval,
+ devpriv->mite->daq_io_addr + Clear_Register);
+ writeb(0x00, devpriv->mite->daq_io_addr + Master_Interrupt_Control);
+
+ ret = comedi_request_irq(mite_irq(devpriv->mite), ni6527_interrupt,
+ IRQF_SHARED, "ni6527", dev);
+ if (ret < 0) {
+ printk(" irq not available");
+ } else
+ dev->irq = mite_irq(devpriv->mite);
+
+ printk("\n");
+
+ return 0;
+}
+
+static int ni6527_detach(struct comedi_device * dev)
+{
+ if (devpriv && devpriv->mite && devpriv->mite->daq_io_addr) {
+ writeb(0x00,
+ devpriv->mite->daq_io_addr + Master_Interrupt_Control);
+ }
+
+ if (dev->irq) {
+ comedi_free_irq(dev->irq, dev);
+ }
+
+ if (devpriv && devpriv->mite) {
+ mite_unsetup(devpriv->mite);
+ }
+
+ return 0;
+}
+
+static int ni6527_find_device(struct comedi_device * dev, int bus, int slot)
+{
+ struct mite_struct *mite;
+ int i;
+
+ for (mite = mite_devices; mite; mite = mite->next) {
+ if (mite->used)
+ continue;
+ if (bus || slot) {
+ if (bus != mite->pcidev->bus->number ||
+ slot != PCI_SLOT(mite->pcidev->devfn))
+ continue;
+ }
+ for (i = 0; i < n_ni6527_boards; i++) {
+ if (mite_device_id(mite) == ni6527_boards[i].dev_id) {
+ dev->board_ptr = ni6527_boards + i;
+ devpriv->mite = mite;
+ return 0;
+ }
+ }
+ }
+ printk("no device found\n");
+ mite_list_devices();
+ return -EIO;
+}
+
+COMEDI_PCI_INITCLEANUP(driver_ni6527, ni6527_pci_table);
projects / linux-2.6-omap-h63xx.git / blobdiff