diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/adl_pci6208.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/adl_pci6208.c | 137 |
1 files changed, 68 insertions, 69 deletions
diff --git a/drivers/staging/comedi/drivers/adl_pci6208.c b/drivers/staging/comedi/drivers/adl_pci6208.c index a67ad57cefcb..dd092c7954a9 100644 --- a/drivers/staging/comedi/drivers/adl_pci6208.c +++ b/drivers/staging/comedi/drivers/adl_pci6208.c @@ -1,44 +1,35 @@ /* - comedi/drivers/adl_pci6208.c - - Hardware driver for ADLink 6208 series cards: - card | voltage output | current output - -------------+-------------------+--------------- - PCI-6208V | 8 channels | - - PCI-6216V | 16 channels | - - PCI-6208A | 8 channels | 8 channels - - 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. -*/ + * adl_pci6208.c + * Comedi driver for ADLink 6208 series cards + * + * 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: adl_pci6208 -Description: ADLink PCI-6208/6216 Series Multi-channel Analog Output Cards -Devices: (ADLink) PCI-6208 [adl_pci6208] - (ADLink) PCI-6216 [adl_pci6216] -Author: nsyeow <nsyeow@pd.jaring.my> -Updated: Fri, 30 Jan 2004 14:44:27 +0800 -Status: untested - -Configuration Options: not applicable, uses PCI auto config - -References: - - ni_660x.c - - adl_pci9111.c copied the entire pci setup section - - adl_pci9118.c -*/ + * Driver: adl_pci6208 + * Description: ADLink PCI-6208/6216 Series Multi-channel Analog Output Cards + * Devices: (ADLink) PCI-6208 [adl_pci6208] + * (ADLink) PCI-6216 [adl_pci6216] + * Author: nsyeow <nsyeow@pd.jaring.my> + * Updated: Fri, 30 Jan 2004 14:44:27 +0800 + * Status: untested + * + * Configuration Options: not applicable, uses PCI auto config + */ #include <linux/module.h> +#include <linux/delay.h> #include <linux/pci.h> #include "../comedidev.h" @@ -82,37 +73,56 @@ struct pci6208_private { unsigned int ao_readback[PCI6208_MAX_AO_CHANNELS]; }; -static int pci6208_ao_winsn(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) +static int pci6208_ao_wait_for_data_send(struct comedi_device *dev, + unsigned int timeout) +{ + unsigned int status; + + while (timeout--) { + status = inw(dev->iobase + PCI6208_AO_STATUS); + if ((status & PCI6208_AO_STATUS_DATA_SEND) == 0) + return 0; + udelay(1); + } + + return -ETIME; +} + +static int pci6208_ao_insn_write(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) { struct pci6208_private *devpriv = dev->private; - int chan = CR_CHAN(insn->chanspec); - unsigned long invert = 1 << (16 - 1); - unsigned long value = 0; - unsigned short status; + unsigned int chan = CR_CHAN(insn->chanspec); + unsigned int val = devpriv->ao_readback[chan]; + int ret; int i; for (i = 0; i < insn->n; i++) { - value = data[i] ^ invert; + val = data[i]; - do { - status = inw(dev->iobase + PCI6208_AO_STATUS); - } while (status & PCI6208_AO_STATUS_DATA_SEND); + /* D/A transfer rate is 2.2us, wait up to 10us */ + ret = pci6208_ao_wait_for_data_send(dev, 10); + if (ret) + return ret; - outw(value, dev->iobase + PCI6208_AO_CONTROL(chan)); + /* the hardware expects two's complement values */ + outw(comedi_offset_munge(s, val), + dev->iobase + PCI6208_AO_CONTROL(chan)); } - devpriv->ao_readback[chan] = value; + devpriv->ao_readback[chan] = val; return insn->n; } -static int pci6208_ao_rinsn(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) +static int pci6208_ao_insn_read(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) { struct pci6208_private *devpriv = dev->private; - int chan = CR_CHAN(insn->chanspec); + unsigned int chan = CR_CHAN(insn->chanspec); int i; for (i = 0; i < insn->n; i++) @@ -141,15 +151,8 @@ static int pci6208_do_insn_bits(struct comedi_device *dev, struct comedi_insn *insn, unsigned int *data) { - unsigned int mask = data[0]; - unsigned int bits = data[1]; - - if (mask) { - s->state &= ~mask; - s->state |= (bits & mask); - + if (comedi_dio_update_state(s, data)) outw(s->state, dev->iobase + PCI6208_DIO); - } data[1] = s->state; @@ -193,8 +196,8 @@ static int pci6208_auto_attach(struct comedi_device *dev, s->n_chan = boardinfo->ao_chans; s->maxdata = 0xffff; s->range_table = &range_bipolar10; - s->insn_write = pci6208_ao_winsn; - s->insn_read = pci6208_ao_rinsn; + s->insn_write = pci6208_ao_insn_write; + s->insn_read = pci6208_ao_insn_read; s = &dev->subdevices[1]; /* digital input subdevice */ @@ -221,10 +224,6 @@ static int pci6208_auto_attach(struct comedi_device *dev, val = inw(dev->iobase + PCI6208_DIO); val = (val & PCI6208_DIO_DO_MASK) >> PCI6208_DIO_DO_SHIFT; s->state = val; - s->io_bits = 0x0f; - - dev_info(dev->class_dev, "%s: %s, I/O base=0x%04lx\n", - dev->driver->driver_name, dev->board_name, dev->iobase); return 0; } @@ -259,5 +258,5 @@ static struct pci_driver adl_pci6208_pci_driver = { module_comedi_pci_driver(adl_pci6208_driver, adl_pci6208_pci_driver); MODULE_AUTHOR("Comedi http://www.comedi.org"); -MODULE_DESCRIPTION("Comedi low-level driver"); +MODULE_DESCRIPTION("Comedi driver for ADLink 6208 series cards"); MODULE_LICENSE("GPL"); |