diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/ni_labpc.c')
-rw-r--r-- | drivers/staging/comedi/drivers/ni_labpc.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/ni_labpc.c b/drivers/staging/comedi/drivers/ni_labpc.c new file mode 100644 index 000000000..51e5e942b --- /dev/null +++ b/drivers/staging/comedi/drivers/ni_labpc.c @@ -0,0 +1,125 @@ +/* + * comedi/drivers/ni_labpc.c + * Driver for National Instruments Lab-PC series boards and compatibles + * Copyright (C) 2001-2003 Frank Mori Hess <fmhess@users.sourceforge.net> + * + * 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: ni_labpc + * Description: National Instruments Lab-PC (& compatibles) + * Devices: [National Instruments] Lab-PC-1200 (lab-pc-1200), + * Lab-PC-1200AI (lab-pc-1200ai), Lab-PC+ (lab-pc+) + * Author: Frank Mori Hess <fmhess@users.sourceforge.net> + * Status: works + * + * Configuration options - ISA boards: + * [0] - I/O port base address + * [1] - IRQ (optional, required for timed or externally triggered + * conversions) + * [2] - DMA channel (optional) + * + * Tested with lab-pc-1200. For the older Lab-PC+, not all input + * ranges and analog references will work, the available ranges/arefs + * will depend on how you have configured the jumpers on your board + * (see your owner's manual). + * + * Kernel-level ISA plug-and-play support for the lab-pc-1200 boards + * has not yet been added to the driver, mainly due to the fact that + * I don't know the device id numbers. If you have one of these boards, + * please file a bug report at http://comedi.org/ so I can get the + * necessary information from you. + * + * The 1200 series boards have onboard calibration dacs for correcting + * analog input/output offsets and gains. The proper settings for these + * caldacs are stored on the board's eeprom. To read the caldac values + * from the eeprom and store them into a file that can be then be used + * by comedilib, use the comedi_calibrate program. + * + * The Lab-pc+ has quirky chanlist requirements when scanning multiple + * channels. Multiple channel scan sequence must start at highest channel, + * then decrement down to channel 0. The rest of the cards can scan down + * like lab-pc+ or scan up from channel zero. Chanlists consisting of all + * one channel are also legal, and allow you to pace conversions in bursts. + * + * NI manuals: + * 341309a (labpc-1200 register manual) + * 320502b (lab-pc+) + */ + +#include <linux/module.h> + +#include "../comedidev.h" + +#include "ni_labpc.h" +#include "ni_labpc_isadma.h" + +static const struct labpc_boardinfo labpc_boards[] = { + { + .name = "lab-pc-1200", + .ai_speed = 10000, + .ai_scan_up = 1, + .has_ao = 1, + .is_labpc1200 = 1, + }, { + .name = "lab-pc-1200ai", + .ai_speed = 10000, + .ai_scan_up = 1, + .is_labpc1200 = 1, + }, { + .name = "lab-pc+", + .ai_speed = 12000, + .has_ao = 1, + }, +}; + +static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it) +{ + unsigned int irq = it->options[1]; + unsigned int dma_chan = it->options[2]; + int ret; + + ret = comedi_request_region(dev, it->options[0], 0x20); + if (ret) + return ret; + + ret = labpc_common_attach(dev, irq, 0); + if (ret) + return ret; + + if (dev->irq) + labpc_init_dma_chan(dev, dma_chan); + + return 0; +} + +static void labpc_detach(struct comedi_device *dev) +{ + labpc_free_dma_chan(dev); + labpc_common_detach(dev); + comedi_legacy_detach(dev); +} + +static struct comedi_driver labpc_driver = { + .driver_name = "ni_labpc", + .module = THIS_MODULE, + .attach = labpc_attach, + .detach = labpc_detach, + .num_names = ARRAY_SIZE(labpc_boards), + .board_name = &labpc_boards[0].name, + .offset = sizeof(struct labpc_boardinfo), +}; +module_comedi_driver(labpc_driver); + +MODULE_AUTHOR("Comedi http://www.comedi.org"); +MODULE_DESCRIPTION("Comedi driver for NI Lab-PC ISA boards"); +MODULE_LICENSE("GPL"); |