diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/addi_apci_2032.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/addi_apci_2032.c | 381 |
1 files changed, 378 insertions, 3 deletions
diff --git a/drivers/staging/comedi/drivers/addi_apci_2032.c b/drivers/staging/comedi/drivers/addi_apci_2032.c index 073a8a56dbe4..8f8d3e95fc78 100644 --- a/drivers/staging/comedi/drivers/addi_apci_2032.c +++ b/drivers/staging/comedi/drivers/addi_apci_2032.c @@ -1,8 +1,383 @@ -#define CONFIG_APCI_2032 1 +/* + * 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 + * + * 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., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * You should also find the complete GPL in the COPYING file accompanying + * this source code. + */ -#define ADDIDATA_DRIVER_NAME "addi_apci_2032" +#include "../comedidev.h" +#include "comedi_fc.h" -#include "addi-data/addi_common.c" +/* + * PCI bar 1 I/O Register map + */ +#define APCI2032_DO_REG 0x00 +#define APCI2032_INT_CTRL_REG 0x04 +#define APCI2032_INT_CTRL_VCC_ENA (1 << 0) +#define APCI2032_INT_CTRL_CC_ENA (1 << 1) +#define APCI2032_INT_STATUS_REG 0x08 +#define APCI2032_INT_STATUS_VCC (1 << 0) +#define APCI2032_INT_STATUS_CC (1 << 1) +#define APCI2032_STATUS_REG 0x0c +#define APCI2032_STATUS_IRQ (1 << 0) +#define APCI2032_WDOG_REG 0x10 +#define APCI2032_WDOG_RELOAD_REG 0x14 +#define APCI2032_WDOG_TIMEBASE 0x18 +#define APCI2032_WDOG_CTRL_REG 0x1c +#define APCI2032_WDOG_CTRL_ENABLE (1 << 0) +#define APCI2032_WDOG_CTRL_SW_TRIG (1 << 9) +#define APCI2032_WDOG_STATUS_REG 0x20 +#define APCI2032_WDOG_STATUS_ENABLED (1 << 0) +#define APCI2032_WDOG_STATUS_SW_TRIG (1 << 1) + +struct apci2032_private { + unsigned int wdog_ctrl; +}; + +static int apci2032_do_insn_bits(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) +{ + unsigned int mask = data[0]; + unsigned int bits = data[1]; + + s->state = inl(dev->iobase + APCI2032_DO_REG); + if (mask) { + s->state &= ~mask; + s->state |= (bits & mask); + + outl(s->state, dev->iobase + APCI2032_DO_REG); + } + + data[1] = s->state; + + return insn->n; +} + +/* + * The watchdog subdevice is configured with two INSN_CONFIG instructions: + * + * Enable the watchdog and set the reload timeout: + * data[0] = INSN_CONFIG_ARM + * data[1] = timeout reload value + * + * Disable the watchdog: + * data[0] = INSN_CONFIG_DISARM + */ +static int apci2032_wdog_insn_config(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) +{ + struct apci2032_private *devpriv = dev->private; + unsigned int reload; + + switch (data[0]) { + case INSN_CONFIG_ARM: + devpriv->wdog_ctrl = APCI2032_WDOG_CTRL_ENABLE; + reload = data[1] & s->maxdata; + outw(reload, dev->iobase + APCI2032_WDOG_RELOAD_REG); + + /* Time base is 20ms, let the user know the timeout */ + dev_info(dev->class_dev, "watchdog enabled, timeout:%dms\n", + 20 * reload + 20); + break; + case INSN_CONFIG_DISARM: + devpriv->wdog_ctrl = 0; + break; + default: + return -EINVAL; + } + + outw(devpriv->wdog_ctrl, dev->iobase + APCI2032_WDOG_CTRL_REG); + + return insn->n; +} + +static int apci2032_wdog_insn_write(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) +{ + struct apci2032_private *devpriv = dev->private; + int i; + + if (devpriv->wdog_ctrl == 0) { + dev_warn(dev->class_dev, "watchdog is disabled\n"); + return -EINVAL; + } + + /* "ping" the watchdog */ + for (i = 0; i < insn->n; i++) { + outw(devpriv->wdog_ctrl | APCI2032_WDOG_CTRL_SW_TRIG, + dev->iobase + APCI2032_WDOG_CTRL_REG); + } + + return insn->n; +} + +static int apci2032_wdog_insn_read(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) +{ + int i; + + for (i = 0; i < insn->n; i++) + data[i] = inl(dev->iobase + APCI2032_WDOG_STATUS_REG); + + 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] = s->state; + return insn->n; +} + +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 |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW); + err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_OTHER); + err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_FOLLOW); + err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT); + err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_NONE); + + if (err) + return 1; + + /* Step 2a : make sure trigger sources are unique */ + /* Step 2b : and mutually compatible */ + + if (err) + return 2; + + /* Step 3: check if arguments are trivially valid */ + + err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0); + + /* + * 0 == no trigger + * 1 == trigger on VCC interrupt + * 2 == trigger on CC interrupt + * 3 == trigger on either VCC or CC interrupt + */ + err |= cfc_check_trigger_arg_max(&cmd->scan_begin_arg, 3); + + err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0); + err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, 1); + err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0); + + if (err) + return 3; + + /* step 4: ignored */ + + if (err) + return 4; + + return 0; +} + +static int apci2032_int_cmd(struct comedi_device *dev, + struct comedi_subdevice *s) +{ + struct comedi_cmd *cmd = &s->async->cmd; + + outl(cmd->scan_begin_arg, dev->iobase + APCI2032_INT_CTRL_REG); + + return 0; +} + +static int apci2032_int_cancel(struct comedi_device *dev, + struct comedi_subdevice *s) +{ + outl(0x0, dev->iobase + APCI2032_INT_CTRL_REG); + + return 0; +} + +static irqreturn_t apci2032_interrupt(int irq, void *d) +{ + struct comedi_device *dev = d; + struct comedi_subdevice *s = dev->read_subdev; + unsigned int val; + + /* Check if VCC OR CC interrupt has occurred */ + val = inl(dev->iobase + APCI2032_STATUS_REG) & APCI2032_STATUS_IRQ; + if (!val) + return IRQ_NONE; + + s->state = inl(dev->iobase + APCI2032_INT_STATUS_REG); + outl(0x0, dev->iobase + APCI2032_INT_CTRL_REG); + + comedi_buf_put(s->async, s->state); + s->async->events |= COMEDI_CB_BLOCK | COMEDI_CB_EOS; + comedi_event(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); + outl(0x0, dev->iobase + APCI2032_WDOG_CTRL_REG); + outl(0x0, dev->iobase + APCI2032_WDOG_RELOAD_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 apci2032_private *devpriv; + struct comedi_subdevice *s; + int ret; + + dev->board_name = dev->driver->driver_name; + + devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL); + if (!devpriv) + return -ENOMEM; + dev->private = devpriv; + + ret = comedi_pci_enable(pcidev, dev->board_name); + if (ret) + return ret; + dev->iobase = pci_resource_start(pcidev, 1); + + 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_WRITEABLE; + 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]; + s->type = COMEDI_SUBD_TIMER; + s->subdev_flags = SDF_WRITEABLE; + s->n_chan = 1; + s->maxdata = 0xff; + s->insn_write = apci2032_wdog_insn_write; + s->insn_read = apci2032_wdog_insn_read; + s->insn_config = apci2032_wdog_insn_config; + + /* Initialize the interrupt subdevice */ + s = &dev->subdevices[2]; + if (dev->irq) { + dev->read_subdev = s; + s->type = COMEDI_SUBD_DI | SDF_CMD_READ; + s->subdev_flags = SDF_READABLE; + s->n_chan = 1; + s->maxdata = 1; + s->range_table = &range_digital; + s->insn_bits = apci2032_int_insn_bits; + s->do_cmdtest = apci2032_int_cmdtest; + s->do_cmd = apci2032_int_cmd; + s->cancel = apci2032_int_cancel; + } else { + s->type = COMEDI_SUBD_UNUSED; + } + + apci2032_reset(dev); + return 0; +} + +static void apci2032_detach(struct comedi_device *dev) +{ + struct pci_dev *pcidev = comedi_to_pci_dev(dev); + + if (dev->iobase) + apci2032_reset(dev); + if (dev->irq) + free_irq(dev->irq, dev); + if (pcidev) { + if (dev->iobase) + comedi_pci_disable(pcidev); + } +} + +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 *ent) +{ + return comedi_pci_auto_config(dev, &apci2032_driver); +} + +static void apci2032_pci_remove(struct pci_dev *dev) +{ + comedi_pci_auto_unconfig(dev); +} + +static DEFINE_PCI_DEVICE_TABLE(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 = apci2032_pci_remove, +}; +module_comedi_pci_driver(apci2032_driver, apci2032_pci_driver); MODULE_AUTHOR("Comedi http://www.comedi.org"); MODULE_DESCRIPTION("Comedi low-level driver"); |