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Diffstat (limited to 'drivers/staging/comedi/drivers/ni_6527.c')
-rw-r--r--drivers/staging/comedi/drivers/ni_6527.c493
1 files changed, 0 insertions, 493 deletions
diff --git a/drivers/staging/comedi/drivers/ni_6527.c b/drivers/staging/comedi/drivers/ni_6527.c
deleted file mode 100644
index f1a45cf7342a..000000000000
--- a/drivers/staging/comedi/drivers/ni_6527.c
+++ /dev/null
@@ -1,493 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * ni_6527.c
- * Comedi driver for National Instruments PCI-6527
- *
- * COMEDI - Linux Control and Measurement Device Interface
- * Copyright (C) 1999,2002,2003 David A. Schleef <ds@schleef.org>
- */
-
-/*
- * Driver: ni_6527
- * Description: National Instruments 6527
- * Devices: [National Instruments] PCI-6527 (pci-6527), PXI-6527 (pxi-6527)
- * Author: David A. Schleef <ds@schleef.org>
- * Updated: Sat, 25 Jan 2003 13:24:40 -0800
- * Status: works
- *
- * Configuration Options: not applicable, uses PCI auto config
- */
-
-#include <linux/module.h>
-#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
-
-/*
- * PCI BAR1 - Register memory map
- *
- * Manuals (available from ftp://ftp.natinst.com/support/manuals)
- * 370106b.pdf 6527 Register Level Programmer Manual
- */
-#define NI6527_DI_REG(x) (0x00 + (x))
-#define NI6527_DO_REG(x) (0x03 + (x))
-#define NI6527_ID_REG 0x06
-#define NI6527_CLR_REG 0x07
-#define NI6527_CLR_EDGE BIT(3)
-#define NI6527_CLR_OVERFLOW BIT(2)
-#define NI6527_CLR_FILT BIT(1)
-#define NI6527_CLR_INTERVAL BIT(0)
-#define NI6527_CLR_IRQS (NI6527_CLR_EDGE | NI6527_CLR_OVERFLOW)
-#define NI6527_CLR_RESET_FILT (NI6527_CLR_FILT | NI6527_CLR_INTERVAL)
-#define NI6527_FILT_INTERVAL_REG(x) (0x08 + (x))
-#define NI6527_FILT_ENA_REG(x) (0x0c + (x))
-#define NI6527_STATUS_REG 0x14
-#define NI6527_STATUS_IRQ BIT(2)
-#define NI6527_STATUS_OVERFLOW BIT(1)
-#define NI6527_STATUS_EDGE BIT(0)
-#define NI6527_CTRL_REG 0x15
-#define NI6527_CTRL_FALLING BIT(4)
-#define NI6527_CTRL_RISING BIT(3)
-#define NI6527_CTRL_IRQ BIT(2)
-#define NI6527_CTRL_OVERFLOW BIT(1)
-#define NI6527_CTRL_EDGE BIT(0)
-#define NI6527_CTRL_DISABLE_IRQS 0
-#define NI6527_CTRL_ENABLE_IRQS (NI6527_CTRL_FALLING | \
- NI6527_CTRL_RISING | \
- NI6527_CTRL_IRQ | NI6527_CTRL_EDGE)
-#define NI6527_RISING_EDGE_REG(x) (0x18 + (x))
-#define NI6527_FALLING_EDGE_REG(x) (0x20 + (x))
-
-enum ni6527_boardid {
- BOARD_PCI6527,
- BOARD_PXI6527,
-};
-
-struct ni6527_board {
- const char *name;
-};
-
-static const struct ni6527_board ni6527_boards[] = {
- [BOARD_PCI6527] = {
- .name = "pci-6527",
- },
- [BOARD_PXI6527] = {
- .name = "pxi-6527",
- },
-};
-
-struct ni6527_private {
- unsigned int filter_interval;
- unsigned int filter_enable;
-};
-
-static void ni6527_set_filter_interval(struct comedi_device *dev,
- unsigned int val)
-{
- struct ni6527_private *devpriv = dev->private;
-
- if (val != devpriv->filter_interval) {
- writeb(val & 0xff, dev->mmio + NI6527_FILT_INTERVAL_REG(0));
- writeb((val >> 8) & 0xff,
- dev->mmio + NI6527_FILT_INTERVAL_REG(1));
- writeb((val >> 16) & 0x0f,
- dev->mmio + NI6527_FILT_INTERVAL_REG(2));
-
- writeb(NI6527_CLR_INTERVAL, dev->mmio + NI6527_CLR_REG);
-
- devpriv->filter_interval = val;
- }
-}
-
-static void ni6527_set_filter_enable(struct comedi_device *dev,
- unsigned int val)
-{
- writeb(val & 0xff, dev->mmio + NI6527_FILT_ENA_REG(0));
- writeb((val >> 8) & 0xff, dev->mmio + NI6527_FILT_ENA_REG(1));
- writeb((val >> 16) & 0xff, dev->mmio + NI6527_FILT_ENA_REG(2));
-}
-
-static int ni6527_di_insn_config(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn,
- unsigned int *data)
-{
- struct ni6527_private *devpriv = dev->private;
- unsigned int chan = CR_CHAN(insn->chanspec);
- unsigned int interval;
-
- switch (data[0]) {
- case INSN_CONFIG_FILTER:
- /*
- * The deglitch filter interval is specified in nanoseconds.
- * The hardware supports intervals in 200ns increments. Round
- * the user values up and return the actual interval.
- */
- interval = (data[1] + 100) / 200;
- data[1] = interval * 200;
-
- if (interval) {
- ni6527_set_filter_interval(dev, interval);
- devpriv->filter_enable |= 1 << chan;
- } else {
- devpriv->filter_enable &= ~(1 << chan);
- }
- ni6527_set_filter_enable(dev, devpriv->filter_enable);
- break;
- default:
- return -EINVAL;
- }
-
- return insn->n;
-}
-
-static int ni6527_di_insn_bits(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn,
- unsigned int *data)
-{
- unsigned int val;
-
- val = readb(dev->mmio + NI6527_DI_REG(0));
- val |= (readb(dev->mmio + NI6527_DI_REG(1)) << 8);
- val |= (readb(dev->mmio + NI6527_DI_REG(2)) << 16);
-
- data[1] = val;
-
- return insn->n;
-}
-
-static int ni6527_do_insn_bits(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn,
- unsigned int *data)
-{
- unsigned int mask;
-
- mask = comedi_dio_update_state(s, data);
- if (mask) {
- /* Outputs are inverted */
- unsigned int val = s->state ^ 0xffffff;
-
- if (mask & 0x0000ff)
- writeb(val & 0xff, dev->mmio + NI6527_DO_REG(0));
- if (mask & 0x00ff00)
- writeb((val >> 8) & 0xff,
- dev->mmio + NI6527_DO_REG(1));
- if (mask & 0xff0000)
- writeb((val >> 16) & 0xff,
- dev->mmio + NI6527_DO_REG(2));
- }
-
- data[1] = s->state;
-
- return insn->n;
-}
-
-static irqreturn_t ni6527_interrupt(int irq, void *d)
-{
- struct comedi_device *dev = d;
- struct comedi_subdevice *s = dev->read_subdev;
- unsigned int status;
-
- status = readb(dev->mmio + NI6527_STATUS_REG);
- if (!(status & NI6527_STATUS_IRQ))
- return IRQ_NONE;
-
- if (status & NI6527_STATUS_EDGE) {
- unsigned short val = 0;
-
- comedi_buf_write_samples(s, &val, 1);
- comedi_handle_events(dev, s);
- }
-
- writeb(NI6527_CLR_IRQS, dev->mmio + NI6527_CLR_REG);
-
- return IRQ_HANDLED;
-}
-
-static int ni6527_intr_cmdtest(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_cmd *cmd)
-{
- int err = 0;
-
- /* Step 1 : check if triggers are trivially valid */
-
- err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW);
- err |= comedi_check_trigger_src(&cmd->scan_begin_src, TRIG_OTHER);
- err |= comedi_check_trigger_src(&cmd->convert_src, TRIG_FOLLOW);
- err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
- err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_COUNT);
-
- if (err)
- return 1;
-
- /* Step 2a : make sure trigger sources are unique */
- /* Step 2b : and mutually compatible */
-
- /* Step 3: check if arguments are trivially valid */
-
- err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0);
- err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
- err |= comedi_check_trigger_arg_is(&cmd->convert_arg, 0);
- err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
- cmd->chanlist_len);
- err |= comedi_check_trigger_arg_is(&cmd->stop_arg, 0);
-
- if (err)
- return 3;
-
- /* Step 4: fix up any arguments */
-
- /* Step 5: check channel list if it exists */
-
- return 0;
-}
-
-static int ni6527_intr_cmd(struct comedi_device *dev,
- struct comedi_subdevice *s)
-{
- writeb(NI6527_CLR_IRQS, dev->mmio + NI6527_CLR_REG);
- writeb(NI6527_CTRL_ENABLE_IRQS, dev->mmio + NI6527_CTRL_REG);
-
- return 0;
-}
-
-static int ni6527_intr_cancel(struct comedi_device *dev,
- struct comedi_subdevice *s)
-{
- writeb(NI6527_CTRL_DISABLE_IRQS, dev->mmio + NI6527_CTRL_REG);
-
- return 0;
-}
-
-static int ni6527_intr_insn_bits(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data)
-{
- data[1] = 0;
- return insn->n;
-}
-
-static void ni6527_set_edge_detection(struct comedi_device *dev,
- unsigned int mask,
- unsigned int rising,
- unsigned int falling)
-{
- unsigned int i;
-
- rising &= mask;
- falling &= mask;
- for (i = 0; i < 2; i++) {
- if (mask & 0xff) {
- if (~mask & 0xff) {
- /* preserve rising-edge detection channels */
- rising |= readb(dev->mmio +
- NI6527_RISING_EDGE_REG(i)) &
- (~mask & 0xff);
- /* preserve falling-edge detection channels */
- falling |= readb(dev->mmio +
- NI6527_FALLING_EDGE_REG(i)) &
- (~mask & 0xff);
- }
- /* update rising-edge detection channels */
- writeb(rising & 0xff,
- dev->mmio + NI6527_RISING_EDGE_REG(i));
- /* update falling-edge detection channels */
- writeb(falling & 0xff,
- dev->mmio + NI6527_FALLING_EDGE_REG(i));
- }
- rising >>= 8;
- falling >>= 8;
- mask >>= 8;
- }
-}
-
-static int ni6527_intr_insn_config(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn,
- unsigned int *data)
-{
- unsigned int mask = 0xffffffff;
- unsigned int rising, falling, shift;
-
- switch (data[0]) {
- case INSN_CONFIG_CHANGE_NOTIFY:
- /* check_insn_config_length() does not check this instruction */
- if (insn->n != 3)
- return -EINVAL;
- rising = data[1];
- falling = data[2];
- ni6527_set_edge_detection(dev, mask, rising, falling);
- break;
- case INSN_CONFIG_DIGITAL_TRIG:
- /* check trigger number */
- if (data[1] != 0)
- return -EINVAL;
- /* check digital trigger operation */
- switch (data[2]) {
- case COMEDI_DIGITAL_TRIG_DISABLE:
- rising = 0;
- falling = 0;
- break;
- case COMEDI_DIGITAL_TRIG_ENABLE_EDGES:
- /* check shift amount */
- shift = data[3];
- if (shift >= 32) {
- mask = 0;
- rising = 0;
- falling = 0;
- } else {
- mask <<= shift;
- rising = data[4] << shift;
- falling = data[5] << shift;
- }
- break;
- default:
- return -EINVAL;
- }
- ni6527_set_edge_detection(dev, mask, rising, falling);
- break;
- default:
- return -EINVAL;
- }
-
- return insn->n;
-}
-
-static void ni6527_reset(struct comedi_device *dev)
-{
- /* disable deglitch filters on all channels */
- ni6527_set_filter_enable(dev, 0);
-
- /* disable edge detection */
- ni6527_set_edge_detection(dev, 0xffffffff, 0, 0);
-
- writeb(NI6527_CLR_IRQS | NI6527_CLR_RESET_FILT,
- dev->mmio + NI6527_CLR_REG);
- writeb(NI6527_CTRL_DISABLE_IRQS, dev->mmio + NI6527_CTRL_REG);
-}
-
-static int ni6527_auto_attach(struct comedi_device *dev,
- unsigned long context)
-{
- struct pci_dev *pcidev = comedi_to_pci_dev(dev);
- const struct ni6527_board *board = NULL;
- struct ni6527_private *devpriv;
- struct comedi_subdevice *s;
- int ret;
-
- if (context < ARRAY_SIZE(ni6527_boards))
- board = &ni6527_boards[context];
- if (!board)
- return -ENODEV;
- dev->board_ptr = board;
- dev->board_name = board->name;
-
- devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
- if (!devpriv)
- return -ENOMEM;
-
- ret = comedi_pci_enable(dev);
- if (ret)
- return ret;
-
- dev->mmio = pci_ioremap_bar(pcidev, 1);
- if (!dev->mmio)
- return -ENOMEM;
-
- /* make sure this is actually a 6527 device */
- if (readb(dev->mmio + NI6527_ID_REG) != 0x27)
- return -ENODEV;
-
- ni6527_reset(dev);
-
- ret = request_irq(pcidev->irq, ni6527_interrupt, IRQF_SHARED,
- dev->board_name, dev);
- if (ret == 0)
- dev->irq = pcidev->irq;
-
- ret = comedi_alloc_subdevices(dev, 3);
- if (ret)
- return ret;
-
- /* Digital Input subdevice */
- s = &dev->subdevices[0];
- s->type = COMEDI_SUBD_DI;
- s->subdev_flags = SDF_READABLE;
- s->n_chan = 24;
- s->maxdata = 1;
- s->range_table = &range_digital;
- s->insn_config = ni6527_di_insn_config;
- s->insn_bits = ni6527_di_insn_bits;
-
- /* Digital Output subdevice */
- s = &dev->subdevices[1];
- s->type = COMEDI_SUBD_DO;
- s->subdev_flags = SDF_WRITABLE;
- s->n_chan = 24;
- s->maxdata = 1;
- s->range_table = &range_digital;
- s->insn_bits = ni6527_do_insn_bits;
-
- /* Edge detection interrupt subdevice */
- s = &dev->subdevices[2];
- if (dev->irq) {
- dev->read_subdev = s;
- s->type = COMEDI_SUBD_DI;
- s->subdev_flags = SDF_READABLE | SDF_CMD_READ;
- s->n_chan = 1;
- s->maxdata = 1;
- s->range_table = &range_digital;
- s->insn_config = ni6527_intr_insn_config;
- s->insn_bits = ni6527_intr_insn_bits;
- s->len_chanlist = 1;
- s->do_cmdtest = ni6527_intr_cmdtest;
- s->do_cmd = ni6527_intr_cmd;
- s->cancel = ni6527_intr_cancel;
- } else {
- s->type = COMEDI_SUBD_UNUSED;
- }
-
- return 0;
-}
-
-static void ni6527_detach(struct comedi_device *dev)
-{
- if (dev->mmio)
- ni6527_reset(dev);
- comedi_pci_detach(dev);
-}
-
-static struct comedi_driver ni6527_driver = {
- .driver_name = "ni_6527",
- .module = THIS_MODULE,
- .auto_attach = ni6527_auto_attach,
- .detach = ni6527_detach,
-};
-
-static int ni6527_pci_probe(struct pci_dev *dev,
- const struct pci_device_id *id)
-{
- return comedi_pci_auto_config(dev, &ni6527_driver, id->driver_data);
-}
-
-static const struct pci_device_id ni6527_pci_table[] = {
- { PCI_VDEVICE(NI, 0x2b10), BOARD_PXI6527 },
- { PCI_VDEVICE(NI, 0x2b20), BOARD_PCI6527 },
- { 0 }
-};
-MODULE_DEVICE_TABLE(pci, ni6527_pci_table);
-
-static struct pci_driver ni6527_pci_driver = {
- .name = "ni_6527",
- .id_table = ni6527_pci_table,
- .probe = ni6527_pci_probe,
- .remove = comedi_pci_auto_unconfig,
-};
-module_comedi_pci_driver(ni6527_driver, ni6527_pci_driver);
-
-MODULE_AUTHOR("Comedi https://www.comedi.org");
-MODULE_DESCRIPTION("Comedi driver for National Instruments PCI-6527");
-MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2024-06-13 05:34:22 +0000