Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / staging / comedi / drivers / ni_labpc.c

diff --git a/kernel/drivers/staging/comedi/drivers/ni_labpc.c b/kernel/drivers/staging/comedi/drivers/ni_labpc.c
new file mode 100644 (file)
index 0000000..51e5e94
--- /dev/null
+++ b/kernel/drivers/staging/comedi/drivers/ni_labpc.c
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+/*
+ * 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");