| /* |
| comedi/drivers/das16cs.c |
| Driver for Computer Boards PC-CARD DAS16/16. |
| |
| COMEDI - Linux Control and Measurement Device Interface |
| Copyright (C) 2000, 2001, 2002 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. |
| |
| PCMCIA support code for this driver is adapted from the dummy_cs.c |
| driver of the Linux PCMCIA Card Services package. |
| |
| The initial developer of the original code is David A. Hinds |
| <dahinds@users.sourceforge.net>. Portions created by David A. Hinds |
| are Copyright (C) 1999 David A. Hinds. All Rights Reserved. |
| |
| */ |
| /* |
| Driver: cb_das16_cs |
| Description: Computer Boards PC-CARD DAS16/16 |
| Devices: [ComputerBoards] PC-CARD DAS16/16 (cb_das16_cs), PC-CARD DAS16/16-AO |
| Author: ds |
| Updated: Mon, 04 Nov 2002 20:04:21 -0800 |
| Status: experimental |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/interrupt.h> |
| #include <linux/delay.h> |
| |
| #include "../comedi_pcmcia.h" |
| |
| #include "comedi_8254.h" |
| |
| #define DAS16CS_ADC_DATA 0 |
| #define DAS16CS_DIO_MUX 2 |
| #define DAS16CS_MISC1 4 |
| #define DAS16CS_MISC2 6 |
| #define DAS16CS_TIMER_BASE 8 |
| #define DAS16CS_DIO 16 |
| |
| struct das16cs_board { |
| const char *name; |
| int device_id; |
| int n_ao_chans; |
| }; |
| |
| static const struct das16cs_board das16cs_boards[] = { |
| { |
| .name = "PC-CARD DAS16/16-AO", |
| .device_id = 0x0039, |
| .n_ao_chans = 2, |
| }, { |
| .name = "PCM-DAS16s/16", |
| .device_id = 0x4009, |
| .n_ao_chans = 0, |
| }, { |
| .name = "PC-CARD DAS16/16", |
| .device_id = 0x0000, /* unknown */ |
| .n_ao_chans = 0, |
| }, |
| }; |
| |
| struct das16cs_private { |
| unsigned short status1; |
| unsigned short status2; |
| }; |
| |
| static const struct comedi_lrange das16cs_ai_range = { |
| 4, { |
| BIP_RANGE(10), |
| BIP_RANGE(5), |
| BIP_RANGE(2.5), |
| BIP_RANGE(1.25), |
| } |
| }; |
| |
| static int das16cs_ai_eoc(struct comedi_device *dev, |
| struct comedi_subdevice *s, |
| struct comedi_insn *insn, |
| unsigned long context) |
| { |
| unsigned int status; |
| |
| status = inw(dev->iobase + DAS16CS_MISC1); |
| if (status & 0x0080) |
| return 0; |
| return -EBUSY; |
| } |
| |
| static int das16cs_ai_rinsn(struct comedi_device *dev, |
| struct comedi_subdevice *s, |
| struct comedi_insn *insn, unsigned int *data) |
| { |
| struct das16cs_private *devpriv = dev->private; |
| int chan = CR_CHAN(insn->chanspec); |
| int range = CR_RANGE(insn->chanspec); |
| int aref = CR_AREF(insn->chanspec); |
| int ret; |
| int i; |
| |
| outw(chan, dev->iobase + DAS16CS_DIO_MUX); |
| |
| devpriv->status1 &= ~0xf320; |
| devpriv->status1 |= (aref == AREF_DIFF) ? 0 : 0x0020; |
| outw(devpriv->status1, dev->iobase + DAS16CS_MISC1); |
| |
| devpriv->status2 &= ~0xff00; |
| switch (range) { |
| case 0: |
| devpriv->status2 |= 0x800; |
| break; |
| case 1: |
| devpriv->status2 |= 0x000; |
| break; |
| case 2: |
| devpriv->status2 |= 0x100; |
| break; |
| case 3: |
| devpriv->status2 |= 0x200; |
| break; |
| } |
| outw(devpriv->status2, dev->iobase + DAS16CS_MISC2); |
| |
| for (i = 0; i < insn->n; i++) { |
| outw(0, dev->iobase + DAS16CS_ADC_DATA); |
| |
| ret = comedi_timeout(dev, s, insn, das16cs_ai_eoc, 0); |
| if (ret) |
| return ret; |
| |
| data[i] = inw(dev->iobase + DAS16CS_ADC_DATA); |
| } |
| |
| return i; |
| } |
| |
| static int das16cs_ao_insn_write(struct comedi_device *dev, |
| struct comedi_subdevice *s, |
| struct comedi_insn *insn, |
| unsigned int *data) |
| { |
| struct das16cs_private *devpriv = dev->private; |
| unsigned int chan = CR_CHAN(insn->chanspec); |
| unsigned int val = s->readback[chan]; |
| unsigned short status1; |
| int bit; |
| int i; |
| |
| for (i = 0; i < insn->n; i++) { |
| val = data[i]; |
| |
| outw(devpriv->status1, dev->iobase + DAS16CS_MISC1); |
| udelay(1); |
| |
| status1 = devpriv->status1 & ~0xf; |
| if (chan) |
| status1 |= 0x0001; |
| else |
| status1 |= 0x0008; |
| |
| outw(status1, dev->iobase + DAS16CS_MISC1); |
| udelay(1); |
| |
| for (bit = 15; bit >= 0; bit--) { |
| int b = (val >> bit) & 0x1; |
| |
| b <<= 1; |
| outw(status1 | b | 0x0000, dev->iobase + DAS16CS_MISC1); |
| udelay(1); |
| outw(status1 | b | 0x0004, dev->iobase + DAS16CS_MISC1); |
| udelay(1); |
| } |
| /* |
| * Make both DAC0CS and DAC1CS high to load |
| * the new data and update analog the output |
| */ |
| outw(status1 | 0x9, dev->iobase + DAS16CS_MISC1); |
| } |
| s->readback[chan] = val; |
| |
| return insn->n; |
| } |
| |
| static int das16cs_dio_insn_bits(struct comedi_device *dev, |
| struct comedi_subdevice *s, |
| struct comedi_insn *insn, |
| unsigned int *data) |
| { |
| if (comedi_dio_update_state(s, data)) |
| outw(s->state, dev->iobase + DAS16CS_DIO); |
| |
| data[1] = inw(dev->iobase + DAS16CS_DIO); |
| |
| return insn->n; |
| } |
| |
| static int das16cs_dio_insn_config(struct comedi_device *dev, |
| struct comedi_subdevice *s, |
| struct comedi_insn *insn, |
| unsigned int *data) |
| { |
| struct das16cs_private *devpriv = dev->private; |
| unsigned int chan = CR_CHAN(insn->chanspec); |
| unsigned int mask; |
| int ret; |
| |
| if (chan < 4) |
| mask = 0x0f; |
| else |
| mask = 0xf0; |
| |
| ret = comedi_dio_insn_config(dev, s, insn, data, mask); |
| if (ret) |
| return ret; |
| |
| devpriv->status2 &= ~0x00c0; |
| devpriv->status2 |= (s->io_bits & 0xf0) ? 0x0080 : 0; |
| devpriv->status2 |= (s->io_bits & 0x0f) ? 0x0040 : 0; |
| |
| outw(devpriv->status2, dev->iobase + DAS16CS_MISC2); |
| |
| return insn->n; |
| } |
| |
| static const void *das16cs_find_boardinfo(struct comedi_device *dev, |
| struct pcmcia_device *link) |
| { |
| const struct das16cs_board *board; |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(das16cs_boards); i++) { |
| board = &das16cs_boards[i]; |
| if (board->device_id == link->card_id) |
| return board; |
| } |
| |
| return NULL; |
| } |
| |
| static int das16cs_auto_attach(struct comedi_device *dev, |
| unsigned long context) |
| { |
| struct pcmcia_device *link = comedi_to_pcmcia_dev(dev); |
| const struct das16cs_board *board; |
| struct das16cs_private *devpriv; |
| struct comedi_subdevice *s; |
| int ret; |
| |
| board = das16cs_find_boardinfo(dev, link); |
| if (!board) |
| return -ENODEV; |
| dev->board_ptr = board; |
| dev->board_name = board->name; |
| |
| link->config_flags |= CONF_AUTO_SET_IO | CONF_ENABLE_IRQ; |
| ret = comedi_pcmcia_enable(dev, NULL); |
| if (ret) |
| return ret; |
| dev->iobase = link->resource[0]->start; |
| |
| link->priv = dev; |
| |
| devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); |
| if (!devpriv) |
| return -ENOMEM; |
| |
| dev->pacer = comedi_8254_init(dev->iobase + DAS16CS_TIMER_BASE, |
| I8254_OSC_BASE_10MHZ, I8254_IO16, 0); |
| if (!dev->pacer) |
| return -ENOMEM; |
| |
| ret = comedi_alloc_subdevices(dev, 3); |
| if (ret) |
| return ret; |
| |
| s = &dev->subdevices[0]; |
| /* analog input subdevice */ |
| s->type = COMEDI_SUBD_AI; |
| s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF | SDF_CMD_READ; |
| s->n_chan = 16; |
| s->maxdata = 0xffff; |
| s->range_table = &das16cs_ai_range; |
| s->len_chanlist = 16; |
| s->insn_read = das16cs_ai_rinsn; |
| |
| s = &dev->subdevices[1]; |
| /* analog output subdevice */ |
| if (board->n_ao_chans) { |
| s->type = COMEDI_SUBD_AO; |
| s->subdev_flags = SDF_WRITABLE; |
| s->n_chan = board->n_ao_chans; |
| s->maxdata = 0xffff; |
| s->range_table = &range_bipolar10; |
| s->insn_write = &das16cs_ao_insn_write; |
| |
| ret = comedi_alloc_subdev_readback(s); |
| if (ret) |
| return ret; |
| } else { |
| s->type = COMEDI_SUBD_UNUSED; |
| } |
| |
| s = &dev->subdevices[2]; |
| /* digital i/o subdevice */ |
| s->type = COMEDI_SUBD_DIO; |
| s->subdev_flags = SDF_READABLE | SDF_WRITABLE; |
| s->n_chan = 8; |
| s->maxdata = 1; |
| s->range_table = &range_digital; |
| s->insn_bits = das16cs_dio_insn_bits; |
| s->insn_config = das16cs_dio_insn_config; |
| |
| return 0; |
| } |
| |
| static struct comedi_driver driver_das16cs = { |
| .driver_name = "cb_das16_cs", |
| .module = THIS_MODULE, |
| .auto_attach = das16cs_auto_attach, |
| .detach = comedi_pcmcia_disable, |
| }; |
| |
| static int das16cs_pcmcia_attach(struct pcmcia_device *link) |
| { |
| return comedi_pcmcia_auto_config(link, &driver_das16cs); |
| } |
| |
| static const struct pcmcia_device_id das16cs_id_table[] = { |
| PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x0039), |
| PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x4009), |
| PCMCIA_DEVICE_NULL |
| }; |
| MODULE_DEVICE_TABLE(pcmcia, das16cs_id_table); |
| |
| static struct pcmcia_driver das16cs_driver = { |
| .name = "cb_das16_cs", |
| .owner = THIS_MODULE, |
| .id_table = das16cs_id_table, |
| .probe = das16cs_pcmcia_attach, |
| .remove = comedi_pcmcia_auto_unconfig, |
| }; |
| module_comedi_pcmcia_driver(driver_das16cs, das16cs_driver); |
| |
| MODULE_AUTHOR("David A. Schleef <ds@schleef.org>"); |
| MODULE_DESCRIPTION("Comedi driver for Computer Boards PC-CARD DAS16/16"); |
| MODULE_LICENSE("GPL"); |