summaryrefslogtreecommitdiff
path: root/drivers/staging/comedi/drivers/addi_apci_2032.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/staging/comedi/drivers/addi_apci_2032.c')
-rw-r--r--drivers/staging/comedi/drivers/addi_apci_2032.c330
1 files changed, 0 insertions, 330 deletions
diff --git a/drivers/staging/comedi/drivers/addi_apci_2032.c b/drivers/staging/comedi/drivers/addi_apci_2032.c
deleted file mode 100644
index e9a2b37a4ae0..000000000000
--- a/drivers/staging/comedi/drivers/addi_apci_2032.c
+++ /dev/null
@@ -1,330 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * addi_apci_2032.c
- * Copyright (C) 2004,2005 ADDI-DATA GmbH for the source code of this module.
- * Project manager: Eric Stolz
- *
- * ADDI-DATA GmbH
- * Dieselstrasse 3
- * D-77833 Ottersweier
- * Tel: +19(0)7223/9493-0
- * Fax: +49(0)7223/9493-92
- * http://www.addi-data.com
- * info@addi-data.com
- */
-
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/slab.h>
-
-#include "../comedi_pci.h"
-#include "addi_watchdog.h"
-
-/*
- * PCI bar 1 I/O Register map
- */
-#define APCI2032_DO_REG 0x00
-#define APCI2032_INT_CTRL_REG 0x04
-#define APCI2032_INT_CTRL_VCC_ENA BIT(0)
-#define APCI2032_INT_CTRL_CC_ENA BIT(1)
-#define APCI2032_INT_STATUS_REG 0x08
-#define APCI2032_INT_STATUS_VCC BIT(0)
-#define APCI2032_INT_STATUS_CC BIT(1)
-#define APCI2032_STATUS_REG 0x0c
-#define APCI2032_STATUS_IRQ BIT(0)
-#define APCI2032_WDOG_REG 0x10
-
-struct apci2032_int_private {
- spinlock_t spinlock; /* protects the following members */
- bool active; /* an async command is running */
- unsigned char enabled_isns; /* mask of enabled interrupt channels */
-};
-
-static int apci2032_do_insn_bits(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn,
- unsigned int *data)
-{
- s->state = inl(dev->iobase + APCI2032_DO_REG);
-
- if (comedi_dio_update_state(s, data))
- outl(s->state, dev->iobase + APCI2032_DO_REG);
-
- data[1] = s->state;
-
- return insn->n;
-}
-
-static int apci2032_int_insn_bits(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn,
- unsigned int *data)
-{
- data[1] = inl(dev->iobase + APCI2032_INT_STATUS_REG) & 3;
- return insn->n;
-}
-
-static void apci2032_int_stop(struct comedi_device *dev,
- struct comedi_subdevice *s)
-{
- struct apci2032_int_private *subpriv = s->private;
-
- subpriv->active = false;
- subpriv->enabled_isns = 0;
- outl(0x0, dev->iobase + APCI2032_INT_CTRL_REG);
-}
-
-static int apci2032_int_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_EXT);
- err |= comedi_check_trigger_src(&cmd->convert_src, TRIG_NOW);
- err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
- err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
-
- if (err)
- return 1;
-
- /* Step 2a : make sure trigger sources are unique */
- err |= comedi_check_trigger_is_unique(cmd->stop_src);
-
- /* Step 2b : and mutually compatible */
-
- if (err)
- return 2;
-
- /* 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);
- if (cmd->stop_src == TRIG_COUNT)
- err |= comedi_check_trigger_arg_min(&cmd->stop_arg, 1);
- else /* TRIG_NONE */
- 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 apci2032_int_cmd(struct comedi_device *dev,
- struct comedi_subdevice *s)
-{
- struct comedi_cmd *cmd = &s->async->cmd;
- struct apci2032_int_private *subpriv = s->private;
- unsigned char enabled_isns;
- unsigned int n;
- unsigned long flags;
-
- enabled_isns = 0;
- for (n = 0; n < cmd->chanlist_len; n++)
- enabled_isns |= 1 << CR_CHAN(cmd->chanlist[n]);
-
- spin_lock_irqsave(&subpriv->spinlock, flags);
-
- subpriv->enabled_isns = enabled_isns;
- subpriv->active = true;
- outl(enabled_isns, dev->iobase + APCI2032_INT_CTRL_REG);
-
- spin_unlock_irqrestore(&subpriv->spinlock, flags);
-
- return 0;
-}
-
-static int apci2032_int_cancel(struct comedi_device *dev,
- struct comedi_subdevice *s)
-{
- struct apci2032_int_private *subpriv = s->private;
- unsigned long flags;
-
- spin_lock_irqsave(&subpriv->spinlock, flags);
- if (subpriv->active)
- apci2032_int_stop(dev, s);
- spin_unlock_irqrestore(&subpriv->spinlock, flags);
-
- return 0;
-}
-
-static irqreturn_t apci2032_interrupt(int irq, void *d)
-{
- struct comedi_device *dev = d;
- struct comedi_subdevice *s = dev->read_subdev;
- struct comedi_cmd *cmd = &s->async->cmd;
- struct apci2032_int_private *subpriv;
- unsigned int val;
-
- if (!dev->attached)
- return IRQ_NONE;
-
- /* Check if VCC OR CC interrupt has occurred */
- val = inl(dev->iobase + APCI2032_STATUS_REG) & APCI2032_STATUS_IRQ;
- if (!val)
- return IRQ_NONE;
-
- subpriv = s->private;
- spin_lock(&subpriv->spinlock);
-
- val = inl(dev->iobase + APCI2032_INT_STATUS_REG) & 3;
- /* Disable triggered interrupt sources. */
- outl(~val & 3, dev->iobase + APCI2032_INT_CTRL_REG);
- /*
- * Note: We don't reenable the triggered interrupt sources because they
- * are level-sensitive, hardware error status interrupt sources and
- * they'd keep triggering interrupts repeatedly.
- */
-
- if (subpriv->active && (val & subpriv->enabled_isns) != 0) {
- unsigned short bits = 0;
- int i;
-
- /* Bits in scan data correspond to indices in channel list. */
- for (i = 0; i < cmd->chanlist_len; i++) {
- unsigned int chan = CR_CHAN(cmd->chanlist[i]);
-
- if (val & (1 << chan))
- bits |= (1 << i);
- }
-
- comedi_buf_write_samples(s, &bits, 1);
-
- if (cmd->stop_src == TRIG_COUNT &&
- s->async->scans_done >= cmd->stop_arg)
- s->async->events |= COMEDI_CB_EOA;
- }
-
- spin_unlock(&subpriv->spinlock);
-
- comedi_handle_events(dev, s);
-
- return IRQ_HANDLED;
-}
-
-static int apci2032_reset(struct comedi_device *dev)
-{
- outl(0x0, dev->iobase + APCI2032_DO_REG);
- outl(0x0, dev->iobase + APCI2032_INT_CTRL_REG);
-
- addi_watchdog_reset(dev->iobase + APCI2032_WDOG_REG);
-
- return 0;
-}
-
-static int apci2032_auto_attach(struct comedi_device *dev,
- unsigned long context_unused)
-{
- struct pci_dev *pcidev = comedi_to_pci_dev(dev);
- struct comedi_subdevice *s;
- int ret;
-
- ret = comedi_pci_enable(dev);
- if (ret)
- return ret;
- dev->iobase = pci_resource_start(pcidev, 1);
- apci2032_reset(dev);
-
- if (pcidev->irq > 0) {
- ret = request_irq(pcidev->irq, apci2032_interrupt,
- IRQF_SHARED, dev->board_name, dev);
- if (ret == 0)
- dev->irq = pcidev->irq;
- }
-
- ret = comedi_alloc_subdevices(dev, 3);
- if (ret)
- return ret;
-
- /* Initialize the digital output subdevice */
- s = &dev->subdevices[0];
- s->type = COMEDI_SUBD_DO;
- s->subdev_flags = SDF_WRITABLE;
- s->n_chan = 32;
- s->maxdata = 1;
- s->range_table = &range_digital;
- s->insn_bits = apci2032_do_insn_bits;
-
- /* Initialize the watchdog subdevice */
- s = &dev->subdevices[1];
- ret = addi_watchdog_init(s, dev->iobase + APCI2032_WDOG_REG);
- if (ret)
- return ret;
-
- /* Initialize the interrupt subdevice */
- s = &dev->subdevices[2];
- s->type = COMEDI_SUBD_DI;
- s->subdev_flags = SDF_READABLE;
- s->n_chan = 2;
- s->maxdata = 1;
- s->range_table = &range_digital;
- s->insn_bits = apci2032_int_insn_bits;
- if (dev->irq) {
- struct apci2032_int_private *subpriv;
-
- dev->read_subdev = s;
- subpriv = kzalloc(sizeof(*subpriv), GFP_KERNEL);
- if (!subpriv)
- return -ENOMEM;
- spin_lock_init(&subpriv->spinlock);
- s->private = subpriv;
- s->subdev_flags = SDF_READABLE | SDF_CMD_READ | SDF_PACKED;
- s->len_chanlist = 2;
- s->do_cmdtest = apci2032_int_cmdtest;
- s->do_cmd = apci2032_int_cmd;
- s->cancel = apci2032_int_cancel;
- }
-
- return 0;
-}
-
-static void apci2032_detach(struct comedi_device *dev)
-{
- if (dev->iobase)
- apci2032_reset(dev);
- comedi_pci_detach(dev);
- if (dev->read_subdev)
- kfree(dev->read_subdev->private);
-}
-
-static struct comedi_driver apci2032_driver = {
- .driver_name = "addi_apci_2032",
- .module = THIS_MODULE,
- .auto_attach = apci2032_auto_attach,
- .detach = apci2032_detach,
-};
-
-static int apci2032_pci_probe(struct pci_dev *dev,
- const struct pci_device_id *id)
-{
- return comedi_pci_auto_config(dev, &apci2032_driver, id->driver_data);
-}
-
-static const struct pci_device_id apci2032_pci_table[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_ADDIDATA, 0x1004) },
- { 0 }
-};
-MODULE_DEVICE_TABLE(pci, apci2032_pci_table);
-
-static struct pci_driver apci2032_pci_driver = {
- .name = "addi_apci_2032",
- .id_table = apci2032_pci_table,
- .probe = apci2032_pci_probe,
- .remove = comedi_pci_auto_unconfig,
-};
-module_comedi_pci_driver(apci2032_driver, apci2032_pci_driver);
-
-MODULE_AUTHOR("Comedi https://www.comedi.org");
-MODULE_DESCRIPTION("ADDI-DATA APCI-2032, 32 channel DO boards");
-MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2024-06-13 02:55:31 +0000