--- /dev/null
+/*
+ comedi/drivers/ni_labpc.c
+ Driver for National Instruments Lab-PC series boards and compatibles
+ Copyright (C) 2001, 2002, 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.
+
+ 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+************************************************************************
+*/
+/*
+Driver: ni_labpc
+Description: National Instruments Lab-PC (& compatibles)
+Author: Frank Mori Hess <fmhess@users.sourceforge.net>
+Devices: [National Instruments] Lab-PC-1200 (labpc-1200),
+ Lab-PC-1200AI (labpc-1200ai), Lab-PC+ (lab-pc+), PCI-1200 (ni_labpc)
+Status: works
+
+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 https://bugs.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.
+
+Configuration options - ISA boards:
+ [0] - I/O port base address
+ [1] - IRQ (optional, required for timed or externally triggered conversions)
+ [2] - DMA channel (optional)
+
+Configuration options - PCI boards:
+ [0] - bus (optional)
+ [1] - slot (optional)
+
+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)
+340914a (pci-1200)
+320502b (lab-pc+)
+
+*/
+
+#undef LABPC_DEBUG
+//#define LABPC_DEBUG // enable debugging messages
+
+#include "../comedidev.h"
+
+#include <linux/delay.h>
+#include <asm/dma.h>
+
+#include "8253.h"
+#include "8255.h"
+#include "mite.h"
+#include "comedi_fc.h"
+#include "ni_labpc.h"
+
+#define DRV_NAME "ni_labpc"
+
+#define LABPC_SIZE 32 // size of io region used by board
+#define LABPC_TIMER_BASE 500 // 2 MHz master clock
+
+/* Registers for the lab-pc+ */
+
+//write-only registers
+#define COMMAND1_REG 0x0
+#define ADC_GAIN_MASK (0x7 << 4)
+#define ADC_CHAN_BITS(x) ((x) & 0x7)
+#define ADC_SCAN_EN_BIT 0x80 // enables multi channel scans
+#define COMMAND2_REG 0x1
+#define PRETRIG_BIT 0x1 // enable pretriggering (used in conjunction with SWTRIG)
+#define HWTRIG_BIT 0x2 // enable paced conversions on external trigger
+#define SWTRIG_BIT 0x4 // enable paced conversions
+#define CASCADE_BIT 0x8 // use two cascaded counters for pacing
+#define DAC_PACED_BIT(channel) (0x40 << ((channel) & 0x1))
+#define COMMAND3_REG 0x2
+#define DMA_EN_BIT 0x1 // enable dma transfers
+#define DIO_INTR_EN_BIT 0x2 // enable interrupts for 8255
+#define DMATC_INTR_EN_BIT 0x4 // enable dma terminal count interrupt
+#define TIMER_INTR_EN_BIT 0x8 // enable timer interrupt
+#define ERR_INTR_EN_BIT 0x10 // enable error interrupt
+#define ADC_FNE_INTR_EN_BIT 0x20 // enable fifo not empty interrupt
+#define ADC_CONVERT_REG 0x3
+#define DAC_LSB_REG(channel) (0x4 + 2 * ((channel) & 0x1))
+#define DAC_MSB_REG(channel) (0x5 + 2 * ((channel) & 0x1))
+#define ADC_CLEAR_REG 0x8
+#define DMATC_CLEAR_REG 0xa
+#define TIMER_CLEAR_REG 0xc
+#define COMMAND6_REG 0xe // 1200 boards only
+#define ADC_COMMON_BIT 0x1 // select ground or common-mode reference
+#define ADC_UNIP_BIT 0x2 // adc unipolar
+#define DAC_UNIP_BIT(channel) (0x4 << ((channel) & 0x1)) // dac unipolar
+#define ADC_FHF_INTR_EN_BIT 0x20 // enable fifo half full interrupt
+#define A1_INTR_EN_BIT 0x40 // enable interrupt on end of hardware count
+#define ADC_SCAN_UP_BIT 0x80 // scan up from channel zero instead of down to zero
+#define COMMAND4_REG 0xf
+#define INTERVAL_SCAN_EN_BIT 0x1 // enables 'interval' scanning
+#define EXT_SCAN_EN_BIT 0x2 // enables external signal on counter b1 output to trigger scan
+#define EXT_CONVERT_OUT_BIT 0x4 // chooses direction (output or input) for EXTCONV* line
+#define ADC_DIFF_BIT 0x8 // chooses differential inputs for adc (in conjunction with board jumper)
+#define EXT_CONVERT_DISABLE_BIT 0x10
+#define COMMAND5_REG 0x1c // 1200 boards only, calibration stuff
+#define EEPROM_WRITE_UNPROTECT_BIT 0x4 // enable eeprom for write
+#define DITHER_EN_BIT 0x8 // enable dithering
+#define CALDAC_LOAD_BIT 0x10 // load calibration dac
+#define SCLOCK_BIT 0x20 // serial clock - rising edge writes, falling edge reads
+#define SDATA_BIT 0x40 // serial data bit for writing to eeprom or calibration dacs
+#define EEPROM_EN_BIT 0x80 // enable eeprom for read/write
+#define INTERVAL_COUNT_REG 0x1e
+#define INTERVAL_LOAD_REG 0x1f
+#define INTERVAL_LOAD_BITS 0x1
+
+// read-only registers
+#define STATUS1_REG 0x0
+#define DATA_AVAIL_BIT 0x1 // data is available in fifo
+#define OVERRUN_BIT 0x2 // overrun has occurred
+#define OVERFLOW_BIT 0x4 // fifo overflow
+#define TIMER_BIT 0x8 // timer interrupt has occured
+#define DMATC_BIT 0x10 // dma terminal count has occured
+#define EXT_TRIG_BIT 0x40 // external trigger has occured
+#define STATUS2_REG 0x1d // 1200 boards only
+#define EEPROM_OUT_BIT 0x1 // programmable eeprom serial output
+#define A1_TC_BIT 0x2 // counter A1 terminal count
+#define FNHF_BIT 0x4 // fifo not half full
+#define ADC_FIFO_REG 0xa
+
+#define DIO_BASE_REG 0x10
+#define COUNTER_A_BASE_REG 0x14
+#define COUNTER_A_CONTROL_REG (COUNTER_A_BASE_REG + 0x3)
+#define INIT_A0_BITS 0x14 // check modes put conversion pacer output in harmless state (a0 mode 2)
+#define INIT_A1_BITS 0x70 // put hardware conversion counter output in harmless state (a1 mode 0)
+#define COUNTER_B_BASE_REG 0x18
+
+static int labpc_attach(comedi_device * dev, comedi_devconfig * it);
+static int labpc_cancel(comedi_device * dev, comedi_subdevice * s);
+static irqreturn_t labpc_interrupt(int irq, void *d PT_REGS_ARG);
+static int labpc_drain_fifo(comedi_device * dev);
+static void labpc_drain_dma(comedi_device * dev);
+static void handle_isa_dma(comedi_device * dev);
+static void labpc_drain_dregs(comedi_device * dev);
+static int labpc_ai_cmdtest(comedi_device * dev, comedi_subdevice * s,
+ comedi_cmd * cmd);
+static int labpc_ai_cmd(comedi_device * dev, comedi_subdevice * s);
+static int labpc_ai_rinsn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data);
+static int labpc_ao_winsn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data);
+static int labpc_ao_rinsn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data);
+static int labpc_calib_read_insn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data);
+static int labpc_calib_write_insn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data);
+static int labpc_eeprom_read_insn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data);
+static int labpc_eeprom_write_insn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data);
+static unsigned int labpc_suggest_transfer_size(comedi_cmd cmd);
+static void labpc_adc_timing(comedi_device * dev, comedi_cmd * cmd);
+#ifdef CONFIG_COMEDI_PCI
+static int labpc_find_device(comedi_device *dev, int bus, int slot);
+#endif
+static int labpc_dio_mem_callback(int dir, int port, int data,
+ unsigned long arg);
+static void labpc_serial_out(comedi_device * dev, unsigned int value,
+ unsigned int num_bits);
+static unsigned int labpc_serial_in(comedi_device * dev);
+static unsigned int labpc_eeprom_read(comedi_device * dev,
+ unsigned int address);
+static unsigned int labpc_eeprom_read_status(comedi_device * dev);
+static unsigned int labpc_eeprom_write(comedi_device * dev,
+ unsigned int address, unsigned int value);
+static void write_caldac(comedi_device * dev, unsigned int channel,
+ unsigned int value);
+
+enum scan_mode {
+ MODE_SINGLE_CHAN,
+ MODE_SINGLE_CHAN_INTERVAL,
+ MODE_MULT_CHAN_UP,
+ MODE_MULT_CHAN_DOWN,
+};
+
+//analog input ranges
+#define NUM_LABPC_PLUS_AI_RANGES 16
+// indicates unipolar ranges
+static const int labpc_plus_is_unipolar[NUM_LABPC_PLUS_AI_RANGES] = {
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 1,
+ 1,
+ 1,
+ 1,
+ 1,
+ 1,
+ 1,
+ 1,
+};
+
+// map range index to gain bits
+static const int labpc_plus_ai_gain_bits[NUM_LABPC_PLUS_AI_RANGES] = {
+ 0x00,
+ 0x10,
+ 0x20,
+ 0x30,
+ 0x40,
+ 0x50,
+ 0x60,
+ 0x70,
+ 0x00,
+ 0x10,
+ 0x20,
+ 0x30,
+ 0x40,
+ 0x50,
+ 0x60,
+ 0x70,
+};
+static const comedi_lrange range_labpc_plus_ai = {
+ NUM_LABPC_PLUS_AI_RANGES,
+ {
+ BIP_RANGE(5),
+ BIP_RANGE(4),
+ BIP_RANGE(2.5),
+ BIP_RANGE(1),
+ BIP_RANGE(0.5),
+ BIP_RANGE(0.25),
+ BIP_RANGE(0.1),
+ BIP_RANGE(0.05),
+ UNI_RANGE(10),
+ UNI_RANGE(8),
+ UNI_RANGE(5),
+ UNI_RANGE(2),
+ UNI_RANGE(1),
+ UNI_RANGE(0.5),
+ UNI_RANGE(0.2),
+ UNI_RANGE(0.1),
+ }
+};
+
+#define NUM_LABPC_1200_AI_RANGES 14
+// indicates unipolar ranges
+const int labpc_1200_is_unipolar[NUM_LABPC_1200_AI_RANGES] = {
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 1,
+ 1,
+ 1,
+ 1,
+ 1,
+ 1,
+ 1,
+};
+
+// map range index to gain bits
+const int labpc_1200_ai_gain_bits[NUM_LABPC_1200_AI_RANGES] = {
+ 0x00,
+ 0x20,
+ 0x30,
+ 0x40,
+ 0x50,
+ 0x60,
+ 0x70,
+ 0x00,
+ 0x20,
+ 0x30,
+ 0x40,
+ 0x50,
+ 0x60,
+ 0x70,
+};
+const comedi_lrange range_labpc_1200_ai = {
+ NUM_LABPC_1200_AI_RANGES,
+ {
+ BIP_RANGE(5),
+ BIP_RANGE(2.5),
+ BIP_RANGE(1),
+ BIP_RANGE(0.5),
+ BIP_RANGE(0.25),
+ BIP_RANGE(0.1),
+ BIP_RANGE(0.05),
+ UNI_RANGE(10),
+ UNI_RANGE(5),
+ UNI_RANGE(2),
+ UNI_RANGE(1),
+ UNI_RANGE(0.5),
+ UNI_RANGE(0.2),
+ UNI_RANGE(0.1),
+ }
+};
+
+//analog output ranges
+#define AO_RANGE_IS_UNIPOLAR 0x1
+static const comedi_lrange range_labpc_ao = {
+ 2,
+ {
+ BIP_RANGE(5),
+ UNI_RANGE(10),
+ }
+};
+
+/* functions that do inb/outb and readb/writeb so we can use
+ * function pointers to decide which to use */
+static inline unsigned int labpc_inb(unsigned long address)
+{
+ return inb(address);
+}
+static inline void labpc_outb(unsigned int byte, unsigned long address)
+{
+ outb(byte, address);
+}
+static inline unsigned int labpc_readb(unsigned long address)
+{
+ return readb((void *)address);
+}
+static inline void labpc_writeb(unsigned int byte, unsigned long address)
+{
+ writeb(byte, (void *)address);
+}
+
+static const labpc_board labpc_boards[] = {
+ {
+ name: "lab-pc-1200",
+ ai_speed:10000,
+ bustype: isa_bustype,
+ register_layout:labpc_1200_layout,
+ has_ao: 1,
+ ai_range_table:&range_labpc_1200_ai,
+ ai_range_code:labpc_1200_ai_gain_bits,
+ ai_range_is_unipolar:labpc_1200_is_unipolar,
+ ai_scan_up:1,
+ memory_mapped_io:0,
+ },
+ {
+ name: "lab-pc-1200ai",
+ ai_speed:10000,
+ bustype: isa_bustype,
+ register_layout:labpc_1200_layout,
+ has_ao: 0,
+ ai_range_table:&range_labpc_1200_ai,
+ ai_range_code:labpc_1200_ai_gain_bits,
+ ai_range_is_unipolar:labpc_1200_is_unipolar,
+ ai_scan_up:1,
+ memory_mapped_io:0,
+ },
+ {
+ name: "lab-pc+",
+ ai_speed:12000,
+ bustype: isa_bustype,
+ register_layout:labpc_plus_layout,
+ has_ao: 1,
+ ai_range_table:&range_labpc_plus_ai,
+ ai_range_code:labpc_plus_ai_gain_bits,
+ ai_range_is_unipolar:labpc_plus_is_unipolar,
+ ai_scan_up:0,
+ memory_mapped_io:0,
+ },
+#ifdef CONFIG_COMEDI_PCI
+ {
+ name: "pci-1200",
+ device_id:0x161,
+ ai_speed:10000,
+ bustype: pci_bustype,
+ register_layout:labpc_1200_layout,
+ has_ao: 1,
+ ai_range_table:&range_labpc_1200_ai,
+ ai_range_code:labpc_1200_ai_gain_bits,
+ ai_range_is_unipolar:labpc_1200_is_unipolar,
+ ai_scan_up:1,
+ memory_mapped_io:1,
+ },
+ // dummy entry so pci board works when comedi_config is passed driver name
+ {
+ .name = DRV_NAME,
+ .bustype = pci_bustype,
+ },
+#endif
+};
+
+/*
+ * Useful for shorthand access to the particular board structure
+ */
+#define thisboard ((labpc_board *)dev->board_ptr)
+
+static const int dma_buffer_size = 0xff00; // size in bytes of dma buffer
+static const int sample_size = 2; // 2 bytes per sample
+
+#define devpriv ((labpc_private *)dev->private)
+
+static comedi_driver driver_labpc = {
+ .driver_name = DRV_NAME,
+ .module = THIS_MODULE,
+ .attach = labpc_attach,
+ .detach = labpc_common_detach,
+ .num_names = sizeof(labpc_boards) / sizeof(labpc_board),
+ .board_name = &labpc_boards[0].name,
+ .offset = sizeof(labpc_board),
+};
+
+#ifdef CONFIG_COMEDI_PCI
+static DEFINE_PCI_DEVICE_TABLE(labpc_pci_table) = {
+ {PCI_VENDOR_ID_NATINST, 0x161, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {0}
+};
+
+MODULE_DEVICE_TABLE(pci, labpc_pci_table);
+#endif /* CONFIG_COMEDI_PCI */
+
+static inline int labpc_counter_load(comedi_device * dev,
+ unsigned long base_address, unsigned int counter_number,
+ unsigned int count, unsigned int mode)
+{
+ if (thisboard->memory_mapped_io)
+ return i8254_mm_load((void *)base_address, 0, counter_number,
+ count, mode);
+ else
+ return i8254_load(base_address, 0, counter_number, count, mode);
+}
+
+int labpc_common_attach(comedi_device * dev, unsigned long iobase,
+ unsigned int irq, unsigned int dma_chan)
+{
+ comedi_subdevice *s;
+ int i;
+ unsigned long dma_flags, isr_flags;
+ short lsb, msb;
+
+ printk("comedi%d: ni_labpc: %s, io 0x%lx", dev->minor, thisboard->name,
+ iobase);
+ if (irq) {
+ printk(", irq %u", irq);
+ }
+ if (dma_chan) {
+ printk(", dma %u", dma_chan);
+ }
+ printk("\n");
+
+ if (iobase == 0) {
+ printk("io base address is zero!\n");
+ return -EINVAL;
+ }
+ // request io regions for isa boards
+ if (thisboard->bustype == isa_bustype) {
+ /* check if io addresses are available */
+ if (!request_region(iobase, LABPC_SIZE,
+ driver_labpc.driver_name)) {
+ printk("I/O port conflict\n");
+ return -EIO;
+ }
+ }
+ dev->iobase = iobase;
+
+ if (thisboard->memory_mapped_io) {
+ devpriv->read_byte = labpc_readb;
+ devpriv->write_byte = labpc_writeb;
+ } else {
+ devpriv->read_byte = labpc_inb;
+ devpriv->write_byte = labpc_outb;
+ }
+ // initialize board's command registers
+ devpriv->write_byte(devpriv->command1_bits, dev->iobase + COMMAND1_REG);
+ devpriv->write_byte(devpriv->command2_bits, dev->iobase + COMMAND2_REG);
+ devpriv->write_byte(devpriv->command3_bits, dev->iobase + COMMAND3_REG);
+ devpriv->write_byte(devpriv->command4_bits, dev->iobase + COMMAND4_REG);
+ if (thisboard->register_layout == labpc_1200_layout) {
+ devpriv->write_byte(devpriv->command5_bits,
+ dev->iobase + COMMAND5_REG);
+ devpriv->write_byte(devpriv->command6_bits,
+ dev->iobase + COMMAND6_REG);
+ }
+
+ /* grab our IRQ */
+ if (irq) {
+ isr_flags = 0;
+ if (thisboard->bustype == pci_bustype)
+ isr_flags |= IRQF_SHARED;
+ if (comedi_request_irq(irq, labpc_interrupt, isr_flags,
+ driver_labpc.driver_name, dev)) {
+ printk("unable to allocate irq %u\n", irq);
+ return -EINVAL;
+ }
+ }
+ dev->irq = irq;
+
+ // grab dma channel
+ if (dma_chan > 3) {
+ printk(" invalid dma channel %u\n", dma_chan);
+ return -EINVAL;
+ } else if (dma_chan) {
+ // allocate dma buffer
+ devpriv->dma_buffer =
+ kmalloc(dma_buffer_size, GFP_KERNEL | GFP_DMA);
+ if (devpriv->dma_buffer == NULL) {
+ printk(" failed to allocate dma buffer\n");
+ return -ENOMEM;
+ }
+ if (request_dma(dma_chan, driver_labpc.driver_name)) {
+ printk(" failed to allocate dma channel %u\n",
+ dma_chan);
+ return -EINVAL;
+ }
+ devpriv->dma_chan = dma_chan;
+ dma_flags = claim_dma_lock();
+ disable_dma(devpriv->dma_chan);
+ set_dma_mode(devpriv->dma_chan, DMA_MODE_READ);
+ release_dma_lock(dma_flags);
+ }
+
+ dev->board_name = thisboard->name;
+
+ if (alloc_subdevices(dev, 5) < 0)
+ return -ENOMEM;
+
+ /* analog input subdevice */
+ s = dev->subdevices + 0;
+ dev->read_subdev = s;
+ s->type = COMEDI_SUBD_AI;
+ s->subdev_flags =
+ SDF_READABLE | SDF_GROUND | SDF_COMMON | SDF_DIFF |
+ SDF_CMD_READ;
+ s->n_chan = 8;
+ s->len_chanlist = 8;
+ s->maxdata = (1 << 12) - 1; // 12 bit resolution
+ s->range_table = thisboard->ai_range_table;
+ s->do_cmd = labpc_ai_cmd;
+ s->do_cmdtest = labpc_ai_cmdtest;
+ s->insn_read = labpc_ai_rinsn;
+ s->cancel = labpc_cancel;
+
+ /* analog output */
+ s = dev->subdevices + 1;
+ if (thisboard->has_ao) {
+/* Could provide command support, except it only has a one sample
+ * hardware buffer for analog output and no underrun flag. */
+ s->type = COMEDI_SUBD_AO;
+ s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_GROUND;
+ s->n_chan = NUM_AO_CHAN;
+ s->maxdata = (1 << 12) - 1; // 12 bit resolution
+ s->range_table = &range_labpc_ao;
+ s->insn_read = labpc_ao_rinsn;
+ s->insn_write = labpc_ao_winsn;
+ /* initialize analog outputs to a known value */
+ for (i = 0; i < s->n_chan; i++) {
+ devpriv->ao_value[i] = s->maxdata / 2;
+ lsb = devpriv->ao_value[i] & 0xff;
+ msb = (devpriv->ao_value[i] >> 8) & 0xff;
+ devpriv->write_byte(lsb, dev->iobase + DAC_LSB_REG(i));
+ devpriv->write_byte(msb, dev->iobase + DAC_MSB_REG(i));
+ }
+ } else {
+ s->type = COMEDI_SUBD_UNUSED;
+ }
+
+ /* 8255 dio */
+ s = dev->subdevices + 2;
+ // if board uses io memory we have to give a custom callback function to the 8255 driver
+ if (thisboard->memory_mapped_io)
+ subdev_8255_init(dev, s, labpc_dio_mem_callback,
+ (unsigned long)(dev->iobase + DIO_BASE_REG));
+ else
+ subdev_8255_init(dev, s, NULL, dev->iobase + DIO_BASE_REG);
+
+ // calibration subdevices for boards that have one
+ s = dev->subdevices + 3;
+ if (thisboard->register_layout == labpc_1200_layout) {
+ s->type = COMEDI_SUBD_CALIB;
+ s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL;
+ s->n_chan = 16;
+ s->maxdata = 0xff;
+ s->insn_read = labpc_calib_read_insn;
+ s->insn_write = labpc_calib_write_insn;
+
+ for (i = 0; i < s->n_chan; i++)
+ write_caldac(dev, i, s->maxdata / 2);
+ } else
+ s->type = COMEDI_SUBD_UNUSED;
+
+ /* EEPROM */
+ s = dev->subdevices + 4;
+ if (thisboard->register_layout == labpc_1200_layout) {
+ s->type = COMEDI_SUBD_MEMORY;
+ s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL;
+ s->n_chan = EEPROM_SIZE;
+ s->maxdata = 0xff;
+ s->insn_read = labpc_eeprom_read_insn;
+ s->insn_write = labpc_eeprom_write_insn;
+
+ for (i = 0; i < EEPROM_SIZE; i++) {
+ devpriv->eeprom_data[i] = labpc_eeprom_read(dev, i);
+ }
+#ifdef LABPC_DEBUG
+ printk(" eeprom:");
+ for (i = 0; i < EEPROM_SIZE; i++) {
+ printk(" %i:0x%x ", i, devpriv->eeprom_data[i]);
+ }
+ printk("\n");
+#endif
+ } else
+ s->type = COMEDI_SUBD_UNUSED;
+
+ return 0;
+}
+
+static int labpc_attach(comedi_device * dev, comedi_devconfig * it)
+{
+ unsigned long iobase = 0;
+ unsigned int irq = 0;
+ unsigned int dma_chan = 0;
+#ifdef CONFIG_COMEDI_PCI
+ int retval;
+#endif
+
+ /* allocate and initialize dev->private */
+ if (alloc_private(dev, sizeof(labpc_private)) < 0)
+ return -ENOMEM;
+
+ // get base address, irq etc. based on bustype
+ switch (thisboard->bustype) {
+ case isa_bustype:
+ iobase = it->options[0];
+ irq = it->options[1];
+ dma_chan = it->options[2];
+ break;
+ case pci_bustype:
+#ifdef CONFIG_COMEDI_PCI
+ retval = labpc_find_device(dev, it->options[0], it->options[1]);
+ if (retval < 0) {
+ return retval;
+ }
+ retval = mite_setup(devpriv->mite);
+ if (retval < 0)
+ return retval;
+ iobase = (unsigned long)devpriv->mite->daq_io_addr;
+ irq = mite_irq(devpriv->mite);
+#else
+ printk(" this driver has not been built with PCI support.\n");
+ return -EINVAL;
+#endif
+ break;
+ case pcmcia_bustype:
+ printk(" this driver does not support pcmcia cards, use ni_labpc_cs.o\n");
+ return -EINVAL;
+ break;
+ default:
+ printk("bug! couldn't determine board type\n");
+ return -EINVAL;
+ break;
+ }
+
+ return labpc_common_attach(dev, iobase, irq, dma_chan);
+}
+
+// adapted from ni_pcimio for finding mite based boards (pc-1200)
+#ifdef CONFIG_COMEDI_PCI
+static int labpc_find_device(comedi_device *dev, int bus, int slot)
+{
+ struct mite_struct *mite;
+ int i;
+ for (mite = mite_devices; mite; mite = mite->next) {
+ if (mite->used)
+ continue;
+ // if bus/slot are specified then make sure we have the right bus/slot
+ if (bus || slot) {
+ if (bus != mite->pcidev->bus->number
+ || slot != PCI_SLOT(mite->pcidev->devfn))
+ continue;
+ }
+ for (i = 0; i < driver_labpc.num_names; i++) {
+ if (labpc_boards[i].bustype != pci_bustype)
+ continue;
+ if (mite_device_id(mite) == labpc_boards[i].device_id) {
+ devpriv->mite = mite;
+ // fixup board pointer, in case we were using the dummy "ni_labpc" entry
+ dev->board_ptr = &labpc_boards[i];
+ return 0;
+ }
+ }
+ }
+ printk("no device found\n");
+ mite_list_devices();
+ return -EIO;
+}
+#endif
+
+int labpc_common_detach(comedi_device * dev)
+{
+ printk("comedi%d: ni_labpc: detach\n", dev->minor);
+
+ if (dev->subdevices)
+ subdev_8255_cleanup(dev, dev->subdevices + 2);
+
+ /* only free stuff if it has been allocated by _attach */
+ if (devpriv->dma_buffer)
+ kfree(devpriv->dma_buffer);
+ if (devpriv->dma_chan)
+ free_dma(devpriv->dma_chan);
+ if (dev->irq)
+ comedi_free_irq(dev->irq, dev);
+ if (thisboard->bustype == isa_bustype && dev->iobase)
+ release_region(dev->iobase, LABPC_SIZE);
+#ifdef CONFIG_COMEDI_PCI
+ if (devpriv->mite)
+ mite_unsetup(devpriv->mite);
+#endif
+
+ return 0;
+};
+
+static void labpc_clear_adc_fifo(const comedi_device * dev)
+{
+ devpriv->write_byte(0x1, dev->iobase + ADC_CLEAR_REG);
+ devpriv->read_byte(dev->iobase + ADC_FIFO_REG);
+ devpriv->read_byte(dev->iobase + ADC_FIFO_REG);
+}
+
+static int labpc_cancel(comedi_device * dev, comedi_subdevice * s)
+{
+ unsigned long flags;
+
+ comedi_spin_lock_irqsave(&dev->spinlock, flags);
+ devpriv->command2_bits &= ~SWTRIG_BIT & ~HWTRIG_BIT & ~PRETRIG_BIT;
+ devpriv->write_byte(devpriv->command2_bits, dev->iobase + COMMAND2_REG);
+ comedi_spin_unlock_irqrestore(&dev->spinlock, flags);
+
+ devpriv->command3_bits = 0;
+ devpriv->write_byte(devpriv->command3_bits, dev->iobase + COMMAND3_REG);
+
+ return 0;
+}
+
+static enum scan_mode labpc_ai_scan_mode(const comedi_cmd * cmd)
+{
+ if (cmd->chanlist_len == 1)
+ return MODE_SINGLE_CHAN;
+
+ /* chanlist may be NULL during cmdtest. */
+ if (cmd->chanlist == NULL)
+ return MODE_MULT_CHAN_UP;
+
+ if (CR_CHAN(cmd->chanlist[0]) == CR_CHAN(cmd->chanlist[1]))
+ return MODE_SINGLE_CHAN_INTERVAL;
+
+ if (CR_CHAN(cmd->chanlist[0]) < CR_CHAN(cmd->chanlist[1]))
+ return MODE_MULT_CHAN_UP;
+
+ if (CR_CHAN(cmd->chanlist[0]) > CR_CHAN(cmd->chanlist[1]))
+ return MODE_MULT_CHAN_DOWN;
+
+ rt_printk("ni_labpc: bug! this should never happen\n");
+
+ return 0;
+}
+
+static int labpc_ai_chanlist_invalid(const comedi_device * dev,
+ const comedi_cmd * cmd)
+{
+ int mode, channel, range, aref, i;
+
+ if (cmd->chanlist == NULL)
+ return 0;
+
+ mode = labpc_ai_scan_mode(cmd);
+
+ if (mode == MODE_SINGLE_CHAN)
+ return 0;
+
+ if (mode == MODE_SINGLE_CHAN_INTERVAL) {
+ if (cmd->chanlist_len > 0xff) {
+ comedi_error(dev,
+ "ni_labpc: chanlist too long for single channel interval mode\n");
+ return 1;
+ }
+ }
+
+ channel = CR_CHAN(cmd->chanlist[0]);
+ range = CR_RANGE(cmd->chanlist[0]);
+ aref = CR_AREF(cmd->chanlist[0]);
+
+ for (i = 0; i < cmd->chanlist_len; i++) {
+
+ switch (mode) {
+ case MODE_SINGLE_CHAN_INTERVAL:
+ if (CR_CHAN(cmd->chanlist[i]) != channel) {
+ comedi_error(dev,
+ "channel scanning order specified in chanlist is not supported by hardware.\n");
+ return 1;
+ }
+ break;
+ case MODE_MULT_CHAN_UP:
+ if (CR_CHAN(cmd->chanlist[i]) != i) {
+ comedi_error(dev,
+ "channel scanning order specified in chanlist is not supported by hardware.\n");
+ return 1;
+ }
+ break;
+ case MODE_MULT_CHAN_DOWN:
+ if (CR_CHAN(cmd->chanlist[i]) !=
+ cmd->chanlist_len - i - 1) {
+ comedi_error(dev,
+ "channel scanning order specified in chanlist is not supported by hardware.\n");
+ return 1;
+ }
+ break;
+ default:
+ rt_printk("ni_labpc: bug! in chanlist check\n");
+ return 1;
+ break;
+ }
+
+ if (CR_RANGE(cmd->chanlist[i]) != range) {
+ comedi_error(dev,
+ "entries in chanlist must all have the same range\n");
+ return 1;
+ }
+
+ if (CR_AREF(cmd->chanlist[i]) != aref) {
+ comedi_error(dev,
+ "entries in chanlist must all have the same reference\n");
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+static int labpc_use_continuous_mode(const comedi_cmd * cmd)
+{
+ if (labpc_ai_scan_mode(cmd) == MODE_SINGLE_CHAN)
+ return 1;
+
+ if (cmd->scan_begin_src == TRIG_FOLLOW)
+ return 1;
+
+ return 0;
+}
+
+static unsigned int labpc_ai_convert_period(const comedi_cmd * cmd)
+{
+ if (cmd->convert_src != TRIG_TIMER)
+ return 0;
+
+ if (labpc_ai_scan_mode(cmd) == MODE_SINGLE_CHAN &&
+ cmd->scan_begin_src == TRIG_TIMER)
+ return cmd->scan_begin_arg;
+
+ return cmd->convert_arg;
+}
+
+static void labpc_set_ai_convert_period(comedi_cmd * cmd, unsigned int ns)
+{
+ if (cmd->convert_src != TRIG_TIMER)
+ return;
+
+ if (labpc_ai_scan_mode(cmd) == MODE_SINGLE_CHAN &&
+ cmd->scan_begin_src == TRIG_TIMER) {
+ cmd->scan_begin_arg = ns;
+ if (cmd->convert_arg > cmd->scan_begin_arg)
+ cmd->convert_arg = cmd->scan_begin_arg;
+ } else
+ cmd->convert_arg = ns;
+}
+
+static unsigned int labpc_ai_scan_period(const comedi_cmd * cmd)
+{
+ if (cmd->scan_begin_src != TRIG_TIMER)
+ return 0;
+
+ if (labpc_ai_scan_mode(cmd) == MODE_SINGLE_CHAN &&
+ cmd->convert_src == TRIG_TIMER)
+ return 0;
+
+ return cmd->scan_begin_arg;
+}
+
+static void labpc_set_ai_scan_period(comedi_cmd * cmd, unsigned int ns)
+{
+ if (cmd->scan_begin_src != TRIG_TIMER)
+ return;
+
+ if (labpc_ai_scan_mode(cmd) == MODE_SINGLE_CHAN &&
+ cmd->convert_src == TRIG_TIMER)
+ return;
+
+ cmd->scan_begin_arg = ns;
+}
+
+static int labpc_ai_cmdtest(comedi_device * dev, comedi_subdevice * s,
+ comedi_cmd * cmd)
+{
+ int err = 0;
+ int tmp, tmp2;
+ int stop_mask;
+
+ /* step 1: make sure trigger sources are trivially valid */
+
+ tmp = cmd->start_src;
+ cmd->start_src &= TRIG_NOW | TRIG_EXT;
+ if (!cmd->start_src || tmp != cmd->start_src)
+ err++;
+
+ tmp = cmd->scan_begin_src;
+ cmd->scan_begin_src &= TRIG_TIMER | TRIG_FOLLOW | TRIG_EXT;
+ if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
+ err++;
+
+ tmp = cmd->convert_src;
+ cmd->convert_src &= TRIG_TIMER | TRIG_EXT;
+ if (!cmd->convert_src || tmp != cmd->convert_src)
+ err++;
+
+ tmp = cmd->scan_end_src;
+ cmd->scan_end_src &= TRIG_COUNT;
+ if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
+ err++;
+
+ tmp = cmd->stop_src;
+ stop_mask = TRIG_COUNT | TRIG_NONE;
+ if (thisboard->register_layout == labpc_1200_layout)
+ stop_mask |= TRIG_EXT;
+ cmd->stop_src &= stop_mask;
+ if (!cmd->stop_src || tmp != cmd->stop_src)
+ err++;
+
+ if (err)
+ return 1;
+
+ /* step 2: make sure trigger sources are unique and mutually compatible */
+
+ if (cmd->start_src != TRIG_NOW && cmd->start_src != TRIG_EXT)
+ err++;
+ if (cmd->scan_begin_src != TRIG_TIMER &&
+ cmd->scan_begin_src != TRIG_FOLLOW &&
+ cmd->scan_begin_src != TRIG_EXT)
+ err++;
+ if (cmd->convert_src != TRIG_TIMER && cmd->convert_src != TRIG_EXT)
+ err++;
+ if (cmd->stop_src != TRIG_COUNT &&
+ cmd->stop_src != TRIG_EXT && cmd->stop_src != TRIG_NONE)
+ err++;
+
+ // can't have external stop and start triggers at once
+ if (cmd->start_src == TRIG_EXT && cmd->stop_src == TRIG_EXT)
+ err++;
+
+ if (err)
+ return 2;
+
+ /* step 3: make sure arguments are trivially compatible */
+
+ if (cmd->start_arg == TRIG_NOW && cmd->start_arg != 0) {
+ cmd->start_arg = 0;
+ err++;
+ }
+
+ if (!cmd->chanlist_len) {
+ err++;
+ }
+ if (cmd->scan_end_arg != cmd->chanlist_len) {
+ cmd->scan_end_arg = cmd->chanlist_len;
+ err++;
+ }
+
+ if (cmd->convert_src == TRIG_TIMER) {
+ if (cmd->convert_arg < thisboard->ai_speed) {
+ cmd->convert_arg = thisboard->ai_speed;
+ err++;
+ }
+ }
+ // make sure scan timing is not too fast
+ if (cmd->scan_begin_src == TRIG_TIMER) {
+ if (cmd->convert_src == TRIG_TIMER &&
+ cmd->scan_begin_arg <
+ cmd->convert_arg * cmd->chanlist_len) {
+ cmd->scan_begin_arg =
+ cmd->convert_arg * cmd->chanlist_len;
+ err++;
+ }
+ if (cmd->scan_begin_arg <
+ thisboard->ai_speed * cmd->chanlist_len) {
+ cmd->scan_begin_arg =
+ thisboard->ai_speed * cmd->chanlist_len;
+ err++;
+ }
+ }
+ // stop source
+ switch (cmd->stop_src) {
+ case TRIG_COUNT:
+ if (!cmd->stop_arg) {
+ cmd->stop_arg = 1;
+ err++;
+ }
+ break;
+ case TRIG_NONE:
+ if (cmd->stop_arg != 0) {
+ cmd->stop_arg = 0;
+ err++;
+ }
+ break;
+ // TRIG_EXT doesn't care since it doesn't trigger off a numbered channel
+ default:
+ break;
+ }
+
+ if (err)
+ return 3;
+
+ /* step 4: fix up any arguments */
+
+ tmp = cmd->convert_arg;
+ tmp2 = cmd->scan_begin_arg;
+ labpc_adc_timing(dev, cmd);
+ if (tmp != cmd->convert_arg || tmp2 != cmd->scan_begin_arg)
+ err++;
+
+ if (err)
+ return 4;
+
+ if (labpc_ai_chanlist_invalid(dev, cmd))
+ return 5;
+
+ return 0;
+}
+
+static int labpc_ai_cmd(comedi_device * dev, comedi_subdevice * s)
+{
+ int channel, range, aref;
+ unsigned long irq_flags;
+ int ret;
+ comedi_async *async = s->async;
+ comedi_cmd *cmd = &async->cmd;
+ enum transfer_type xfer;
+ unsigned long flags;
+
+ if (!dev->irq) {
+ comedi_error(dev, "no irq assigned, cannot perform command");
+ return -1;
+ }
+
+ range = CR_RANGE(cmd->chanlist[0]);
+ aref = CR_AREF(cmd->chanlist[0]);
+
+ // make sure board is disabled before setting up aquisition
+ comedi_spin_lock_irqsave(&dev->spinlock, flags);
+ devpriv->command2_bits &= ~SWTRIG_BIT & ~HWTRIG_BIT & ~PRETRIG_BIT;
+ devpriv->write_byte(devpriv->command2_bits, dev->iobase + COMMAND2_REG);
+ comedi_spin_unlock_irqrestore(&dev->spinlock, flags);
+
+ devpriv->command3_bits = 0;
+ devpriv->write_byte(devpriv->command3_bits, dev->iobase + COMMAND3_REG);
+
+ // initialize software conversion count
+ if (cmd->stop_src == TRIG_COUNT) {
+ devpriv->count = cmd->stop_arg * cmd->chanlist_len;
+ }
+ // setup hardware conversion counter
+ if (cmd->stop_src == TRIG_EXT) {
+ // load counter a1 with count of 3 (pc+ manual says this is minimum allowed) using mode 0
+ ret = labpc_counter_load(dev, dev->iobase + COUNTER_A_BASE_REG,
+ 1, 3, 0);
+ if (ret < 0) {
+ comedi_error(dev, "error loading counter a1");
+ return -1;
+ }
+ } else // otherwise, just put a1 in mode 0 with no count to set its output low
+ devpriv->write_byte(INIT_A1_BITS,
+ dev->iobase + COUNTER_A_CONTROL_REG);
+
+ // figure out what method we will use to transfer data
+ if (devpriv->dma_chan && // need a dma channel allocated
+ // dma unsafe at RT priority, and too much setup time for TRIG_WAKE_EOS for
+ (cmd->flags & (TRIG_WAKE_EOS | TRIG_RT)) == 0 &&
+ // only available on the isa boards
+ thisboard->bustype == isa_bustype) {
+ xfer = isa_dma_transfer;
+ } else if (thisboard->register_layout == labpc_1200_layout && // pc-plus has no fifo-half full interrupt
+ // wake-end-of-scan should interrupt on fifo not empty
+ (cmd->flags & TRIG_WAKE_EOS) == 0 &&
+ // make sure we are taking more than just a few points
+ (cmd->stop_src != TRIG_COUNT || devpriv->count > 256)) {
+ xfer = fifo_half_full_transfer;
+ } else
+ xfer = fifo_not_empty_transfer;
+ devpriv->current_transfer = xfer;
+
+ // setup command6 register for 1200 boards
+ if (thisboard->register_layout == labpc_1200_layout) {
+ // reference inputs to ground or common?
+ if (aref != AREF_GROUND)
+ devpriv->command6_bits |= ADC_COMMON_BIT;
+ else
+ devpriv->command6_bits &= ~ADC_COMMON_BIT;
+ // bipolar or unipolar range?
+ if (thisboard->ai_range_is_unipolar[range])
+ devpriv->command6_bits |= ADC_UNIP_BIT;
+ else
+ devpriv->command6_bits &= ~ADC_UNIP_BIT;
+ // interrupt on fifo half full?
+ if (xfer == fifo_half_full_transfer)
+ devpriv->command6_bits |= ADC_FHF_INTR_EN_BIT;
+ else
+ devpriv->command6_bits &= ~ADC_FHF_INTR_EN_BIT;
+ // enable interrupt on counter a1 terminal count?
+ if (cmd->stop_src == TRIG_EXT)
+ devpriv->command6_bits |= A1_INTR_EN_BIT;
+ else
+ devpriv->command6_bits &= ~A1_INTR_EN_BIT;
+ // are we scanning up or down through channels?
+ if (labpc_ai_scan_mode(cmd) == MODE_MULT_CHAN_UP)
+ devpriv->command6_bits |= ADC_SCAN_UP_BIT;
+ else
+ devpriv->command6_bits &= ~ADC_SCAN_UP_BIT;
+ // write to register
+ devpriv->write_byte(devpriv->command6_bits,
+ dev->iobase + COMMAND6_REG);
+ }
+
+ /* setup channel list, etc (command1 register) */
+ devpriv->command1_bits = 0;
+ if (labpc_ai_scan_mode(cmd) == MODE_MULT_CHAN_UP)
+ channel = CR_CHAN(cmd->chanlist[cmd->chanlist_len - 1]);
+ else
+ channel = CR_CHAN(cmd->chanlist[0]);
+ // munge channel bits for differential / scan disabled mode
+ if (labpc_ai_scan_mode(cmd) != MODE_SINGLE_CHAN && aref == AREF_DIFF)
+ channel *= 2;
+ devpriv->command1_bits |= ADC_CHAN_BITS(channel);
+ devpriv->command1_bits |= thisboard->ai_range_code[range];
+ devpriv->write_byte(devpriv->command1_bits, dev->iobase + COMMAND1_REG);
+ // manual says to set scan enable bit on second pass
+ if (labpc_ai_scan_mode(cmd) == MODE_MULT_CHAN_UP ||
+ labpc_ai_scan_mode(cmd) == MODE_MULT_CHAN_DOWN) {
+ devpriv->command1_bits |= ADC_SCAN_EN_BIT;
+ /* need a brief delay before enabling scan, or scan list will get screwed when you switch
+ * between scan up to scan down mode - dunno why */
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command1_bits,
+ dev->iobase + COMMAND1_REG);
+ }
+ // setup any external triggering/pacing (command4 register)
+ devpriv->command4_bits = 0;
+ if (cmd->convert_src != TRIG_EXT)
+ devpriv->command4_bits |= EXT_CONVERT_DISABLE_BIT;
+ /* XXX should discard first scan when using interval scanning
+ * since manual says it is not synced with scan clock */
+ if (labpc_use_continuous_mode(cmd) == 0) {
+ devpriv->command4_bits |= INTERVAL_SCAN_EN_BIT;
+ if (cmd->scan_begin_src == TRIG_EXT)
+ devpriv->command4_bits |= EXT_SCAN_EN_BIT;
+ }
+ // single-ended/differential
+ if (aref == AREF_DIFF)
+ devpriv->command4_bits |= ADC_DIFF_BIT;
+ devpriv->write_byte(devpriv->command4_bits, dev->iobase + COMMAND4_REG);
+
+ devpriv->write_byte(cmd->chanlist_len,
+ dev->iobase + INTERVAL_COUNT_REG);
+ // load count
+ devpriv->write_byte(INTERVAL_LOAD_BITS,
+ dev->iobase + INTERVAL_LOAD_REG);
+
+ if (cmd->convert_src == TRIG_TIMER || cmd->scan_begin_src == TRIG_TIMER) {
+ // set up pacing
+ labpc_adc_timing(dev, cmd);
+ // load counter b0 in mode 3
+ ret = labpc_counter_load(dev, dev->iobase + COUNTER_B_BASE_REG,
+ 0, devpriv->divisor_b0, 3);
+ if (ret < 0) {
+ comedi_error(dev, "error loading counter b0");
+ return -1;
+ }
+ }
+ // set up conversion pacing
+ if (labpc_ai_convert_period(cmd)) {
+ // load counter a0 in mode 2
+ ret = labpc_counter_load(dev, dev->iobase + COUNTER_A_BASE_REG,
+ 0, devpriv->divisor_a0, 2);
+ if (ret < 0) {
+ comedi_error(dev, "error loading counter a0");
+ return -1;
+ }
+ } else
+ devpriv->write_byte(INIT_A0_BITS,
+ dev->iobase + COUNTER_A_CONTROL_REG);
+
+ // set up scan pacing
+ if (labpc_ai_scan_period(cmd)) {
+ // load counter b1 in mode 2
+ ret = labpc_counter_load(dev, dev->iobase + COUNTER_B_BASE_REG,
+ 1, devpriv->divisor_b1, 2);
+ if (ret < 0) {
+ comedi_error(dev, "error loading counter b1");
+ return -1;
+ }
+ }
+
+ labpc_clear_adc_fifo(dev);
+
+ // set up dma transfer
+ if (xfer == isa_dma_transfer) {
+ irq_flags = claim_dma_lock();
+ disable_dma(devpriv->dma_chan);
+ /* clear flip-flop to make sure 2-byte registers for
+ * count and address get set correctly */
+ clear_dma_ff(devpriv->dma_chan);
+ set_dma_addr(devpriv->dma_chan,
+ virt_to_bus(devpriv->dma_buffer));
+ // set appropriate size of transfer
+ devpriv->dma_transfer_size = labpc_suggest_transfer_size(*cmd);
+ if (cmd->stop_src == TRIG_COUNT &&
+ devpriv->count * sample_size <
+ devpriv->dma_transfer_size) {
+ devpriv->dma_transfer_size =
+ devpriv->count * sample_size;
+ }
+ set_dma_count(devpriv->dma_chan, devpriv->dma_transfer_size);
+ enable_dma(devpriv->dma_chan);
+ release_dma_lock(irq_flags);
+ // enable board's dma
+ devpriv->command3_bits |= DMA_EN_BIT | DMATC_INTR_EN_BIT;
+ } else
+ devpriv->command3_bits &= ~DMA_EN_BIT & ~DMATC_INTR_EN_BIT;
+
+ // enable error interrupts
+ devpriv->command3_bits |= ERR_INTR_EN_BIT;
+ // enable fifo not empty interrupt?
+ if (xfer == fifo_not_empty_transfer)
+ devpriv->command3_bits |= ADC_FNE_INTR_EN_BIT;
+ else
+ devpriv->command3_bits &= ~ADC_FNE_INTR_EN_BIT;
+ devpriv->write_byte(devpriv->command3_bits, dev->iobase + COMMAND3_REG);
+
+ // startup aquisition
+
+ // command2 reg
+ // use 2 cascaded counters for pacing
+ comedi_spin_lock_irqsave(&dev->spinlock, flags);
+ devpriv->command2_bits |= CASCADE_BIT;
+ switch (cmd->start_src) {
+ case TRIG_EXT:
+ devpriv->command2_bits |= HWTRIG_BIT;
+ devpriv->command2_bits &= ~PRETRIG_BIT & ~SWTRIG_BIT;
+ break;
+ case TRIG_NOW:
+ devpriv->command2_bits |= SWTRIG_BIT;
+ devpriv->command2_bits &= ~PRETRIG_BIT & ~HWTRIG_BIT;
+ break;
+ default:
+ comedi_error(dev, "bug with start_src");
+ return -1;
+ break;
+ }
+ switch (cmd->stop_src) {
+ case TRIG_EXT:
+ devpriv->command2_bits |= HWTRIG_BIT | PRETRIG_BIT;
+ break;
+ case TRIG_COUNT:
+ case TRIG_NONE:
+ break;
+ default:
+ comedi_error(dev, "bug with stop_src");
+ return -1;
+ }
+ devpriv->write_byte(devpriv->command2_bits, dev->iobase + COMMAND2_REG);
+ comedi_spin_unlock_irqrestore(&dev->spinlock, flags);
+
+ return 0;
+}
+
+/* interrupt service routine */
+static irqreturn_t labpc_interrupt(int irq, void *d PT_REGS_ARG)
+{
+ comedi_device *dev = d;
+ comedi_subdevice *s = dev->read_subdev;
+ comedi_async *async;
+ comedi_cmd *cmd;
+
+ if (dev->attached == 0) {
+ comedi_error(dev, "premature interrupt");
+ return IRQ_HANDLED;
+ }
+
+ async = s->async;
+ cmd = &async->cmd;
+ async->events = 0;
+
+ // read board status
+ devpriv->status1_bits = devpriv->read_byte(dev->iobase + STATUS1_REG);
+ if (thisboard->register_layout == labpc_1200_layout)
+ devpriv->status2_bits =
+ devpriv->read_byte(dev->iobase + STATUS2_REG);
+
+ if ((devpriv->status1_bits & (DMATC_BIT | TIMER_BIT | OVERFLOW_BIT |
+ OVERRUN_BIT | DATA_AVAIL_BIT)) == 0
+ && (devpriv->status2_bits & A1_TC_BIT) == 0
+ && (devpriv->status2_bits & FNHF_BIT)) {
+ return IRQ_NONE;
+ }
+
+ if (devpriv->status1_bits & OVERRUN_BIT) {
+ // clear error interrupt
+ devpriv->write_byte(0x1, dev->iobase + ADC_CLEAR_REG);
+ async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
+ comedi_event(dev, s);
+ comedi_error(dev, "overrun");
+ return IRQ_HANDLED;
+ }
+
+ if (devpriv->current_transfer == isa_dma_transfer) {
+ // if a dma terminal count of external stop trigger has occurred
+ if (devpriv->status1_bits & DMATC_BIT ||
+ (thisboard->register_layout == labpc_1200_layout
+ && devpriv->status2_bits & A1_TC_BIT)) {
+ handle_isa_dma(dev);
+ }
+ } else
+ labpc_drain_fifo(dev);
+
+ if (devpriv->status1_bits & TIMER_BIT) {
+ comedi_error(dev, "handled timer interrupt?");
+ // clear it
+ devpriv->write_byte(0x1, dev->iobase + TIMER_CLEAR_REG);
+ }
+
+ if (devpriv->status1_bits & OVERFLOW_BIT) {
+ // clear error interrupt
+ devpriv->write_byte(0x1, dev->iobase + ADC_CLEAR_REG);
+ async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
+ comedi_event(dev, s);
+ comedi_error(dev, "overflow");
+ return IRQ_HANDLED;
+ }
+ // handle external stop trigger
+ if (cmd->stop_src == TRIG_EXT) {
+ if (devpriv->status2_bits & A1_TC_BIT) {
+ labpc_drain_dregs(dev);
+ labpc_cancel(dev, s);
+ async->events |= COMEDI_CB_EOA;
+ }
+ }
+
+ /* TRIG_COUNT end of acquisition */
+ if (cmd->stop_src == TRIG_COUNT) {
+ if (devpriv->count == 0) {
+ labpc_cancel(dev, s);
+ async->events |= COMEDI_CB_EOA;
+ }
+ }
+
+ comedi_event(dev, s);
+ return IRQ_HANDLED;
+}
+
+// read all available samples from ai fifo
+static int labpc_drain_fifo(comedi_device * dev)
+{
+ unsigned int lsb, msb;
+ sampl_t data;
+ comedi_async *async = dev->read_subdev->async;
+ const int timeout = 10000;
+ unsigned int i;
+
+ devpriv->status1_bits = devpriv->read_byte(dev->iobase + STATUS1_REG);
+
+ for (i = 0; (devpriv->status1_bits & DATA_AVAIL_BIT) && i < timeout;
+ i++) {
+ // quit if we have all the data we want
+ if (async->cmd.stop_src == TRIG_COUNT) {
+ if (devpriv->count == 0)
+ break;
+ devpriv->count--;
+ }
+ lsb = devpriv->read_byte(dev->iobase + ADC_FIFO_REG);
+ msb = devpriv->read_byte(dev->iobase + ADC_FIFO_REG);
+ data = (msb << 8) | lsb;
+ cfc_write_to_buffer(dev->read_subdev, data);
+ devpriv->status1_bits =
+ devpriv->read_byte(dev->iobase + STATUS1_REG);
+ }
+ if (i == timeout) {
+ comedi_error(dev, "ai timeout, fifo never empties");
+ async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
+ return -1;
+ }
+
+ return 0;
+}
+
+static void labpc_drain_dma(comedi_device * dev)
+{
+ comedi_subdevice *s = dev->read_subdev;
+ comedi_async *async = s->async;
+ int status;
+ unsigned long flags;
+ unsigned int max_points, num_points, residue, leftover;
+ int i;
+
+ status = devpriv->status1_bits;
+
+ flags = claim_dma_lock();
+ disable_dma(devpriv->dma_chan);
+ /* clear flip-flop to make sure 2-byte registers for
+ * count and address get set correctly */
+ clear_dma_ff(devpriv->dma_chan);
+
+ // figure out how many points to read
+ max_points = devpriv->dma_transfer_size / sample_size;
+ /* residue is the number of points left to be done on the dma
+ * transfer. It should always be zero at this point unless
+ * the stop_src is set to external triggering.
+ */
+ residue = get_dma_residue(devpriv->dma_chan) / sample_size;
+ num_points = max_points - residue;
+ if (devpriv->count < num_points && async->cmd.stop_src == TRIG_COUNT)
+ num_points = devpriv->count;
+
+ // figure out how many points will be stored next time
+ leftover = 0;
+ if (async->cmd.stop_src != TRIG_COUNT) {
+ leftover = devpriv->dma_transfer_size / sample_size;
+ } else if (devpriv->count > num_points) {
+ leftover = devpriv->count - num_points;
+ if (leftover > max_points)
+ leftover = max_points;
+ }
+
+ /* write data to comedi buffer */
+ for (i = 0; i < num_points; i++) {
+ cfc_write_to_buffer(s, devpriv->dma_buffer[i]);
+ }
+ if (async->cmd.stop_src == TRIG_COUNT)
+ devpriv->count -= num_points;
+
+ // set address and count for next transfer
+ set_dma_addr(devpriv->dma_chan, virt_to_bus(devpriv->dma_buffer));
+ set_dma_count(devpriv->dma_chan, leftover * sample_size);
+ release_dma_lock(flags);
+
+ async->events |= COMEDI_CB_BLOCK;
+}
+
+static void handle_isa_dma(comedi_device * dev)
+{
+ labpc_drain_dma(dev);
+
+ enable_dma(devpriv->dma_chan);
+
+ // clear dma tc interrupt
+ devpriv->write_byte(0x1, dev->iobase + DMATC_CLEAR_REG);
+}
+
+/* makes sure all data aquired by board is transfered to comedi (used
+ * when aquisition is terminated by stop_src == TRIG_EXT). */
+static void labpc_drain_dregs(comedi_device * dev)
+{
+ if (devpriv->current_transfer == isa_dma_transfer)
+ labpc_drain_dma(dev);
+
+ labpc_drain_fifo(dev);
+}
+
+static int labpc_ai_rinsn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ int i, n;
+ int chan, range;
+ int lsb, msb;
+ int timeout = 1000;
+ unsigned long flags;
+
+ // disable timed conversions
+ comedi_spin_lock_irqsave(&dev->spinlock, flags);
+ devpriv->command2_bits &= ~SWTRIG_BIT & ~HWTRIG_BIT & ~PRETRIG_BIT;
+ devpriv->write_byte(devpriv->command2_bits, dev->iobase + COMMAND2_REG);
+ comedi_spin_unlock_irqrestore(&dev->spinlock, flags);
+
+ // disable interrupt generation and dma
+ devpriv->command3_bits = 0;
+ devpriv->write_byte(devpriv->command3_bits, dev->iobase + COMMAND3_REG);
+
+ /* set gain and channel */
+ devpriv->command1_bits = 0;
+ chan = CR_CHAN(insn->chanspec);
+ range = CR_RANGE(insn->chanspec);
+ devpriv->command1_bits |= thisboard->ai_range_code[range];
+ // munge channel bits for differential/scan disabled mode
+ if (CR_AREF(insn->chanspec) == AREF_DIFF)
+ chan *= 2;
+ devpriv->command1_bits |= ADC_CHAN_BITS(chan);
+ devpriv->write_byte(devpriv->command1_bits, dev->iobase + COMMAND1_REG);
+
+ // setup command6 register for 1200 boards
+ if (thisboard->register_layout == labpc_1200_layout) {
+ // reference inputs to ground or common?
+ if (CR_AREF(insn->chanspec) != AREF_GROUND)
+ devpriv->command6_bits |= ADC_COMMON_BIT;
+ else
+ devpriv->command6_bits &= ~ADC_COMMON_BIT;
+ // bipolar or unipolar range?
+ if (thisboard->ai_range_is_unipolar[range])
+ devpriv->command6_bits |= ADC_UNIP_BIT;
+ else
+ devpriv->command6_bits &= ~ADC_UNIP_BIT;
+ // don't interrupt on fifo half full
+ devpriv->command6_bits &= ~ADC_FHF_INTR_EN_BIT;
+ // don't enable interrupt on counter a1 terminal count?
+ devpriv->command6_bits &= ~A1_INTR_EN_BIT;
+ // write to register
+ devpriv->write_byte(devpriv->command6_bits,
+ dev->iobase + COMMAND6_REG);
+ }
+ // setup command4 register
+ devpriv->command4_bits = 0;
+ devpriv->command4_bits |= EXT_CONVERT_DISABLE_BIT;
+ // single-ended/differential
+ if (CR_AREF(insn->chanspec) == AREF_DIFF)
+ devpriv->command4_bits |= ADC_DIFF_BIT;
+ devpriv->write_byte(devpriv->command4_bits, dev->iobase + COMMAND4_REG);
+
+ // initialize pacer counter output to make sure it doesn't cause any problems
+ devpriv->write_byte(INIT_A0_BITS, dev->iobase + COUNTER_A_CONTROL_REG);
+
+ labpc_clear_adc_fifo(dev);
+
+ for (n = 0; n < insn->n; n++) {
+ /* trigger conversion */
+ devpriv->write_byte(0x1, dev->iobase + ADC_CONVERT_REG);
+
+ for (i = 0; i < timeout; i++) {
+ if (devpriv->read_byte(dev->iobase +
+ STATUS1_REG) & DATA_AVAIL_BIT)
+ break;
+ comedi_udelay(1);
+ }
+ if (i == timeout) {
+ comedi_error(dev, "timeout");
+ return -ETIME;
+ }
+ lsb = devpriv->read_byte(dev->iobase + ADC_FIFO_REG);
+ msb = devpriv->read_byte(dev->iobase + ADC_FIFO_REG);
+ data[n] = (msb << 8) | lsb;
+ }
+
+ return n;
+}
+
+// analog output insn
+static int labpc_ao_winsn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ int channel, range;
+ unsigned long flags;
+ int lsb, msb;
+
+ channel = CR_CHAN(insn->chanspec);
+
+ // turn off pacing of analog output channel
+ /* note: hardware bug in daqcard-1200 means pacing cannot
+ * be independently enabled/disabled for its the two channels */
+ comedi_spin_lock_irqsave(&dev->spinlock, flags);
+ devpriv->command2_bits &= ~DAC_PACED_BIT(channel);
+ devpriv->write_byte(devpriv->command2_bits, dev->iobase + COMMAND2_REG);
+ comedi_spin_unlock_irqrestore(&dev->spinlock, flags);
+
+ // set range
+ if (thisboard->register_layout == labpc_1200_layout) {
+ range = CR_RANGE(insn->chanspec);
+ if (range & AO_RANGE_IS_UNIPOLAR)
+ devpriv->command6_bits |= DAC_UNIP_BIT(channel);
+ else
+ devpriv->command6_bits &= ~DAC_UNIP_BIT(channel);
+ // write to register
+ devpriv->write_byte(devpriv->command6_bits,
+ dev->iobase + COMMAND6_REG);
+ }
+ // send data
+ lsb = data[0] & 0xff;
+ msb = (data[0] >> 8) & 0xff;
+ devpriv->write_byte(lsb, dev->iobase + DAC_LSB_REG(channel));
+ devpriv->write_byte(msb, dev->iobase + DAC_MSB_REG(channel));
+
+ // remember value for readback
+ devpriv->ao_value[channel] = data[0];
+
+ return 1;
+}
+
+// analog output readback insn
+static int labpc_ao_rinsn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ data[0] = devpriv->ao_value[CR_CHAN(insn->chanspec)];
+
+ return 1;
+}
+
+static int labpc_calib_read_insn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ data[0] = devpriv->caldac[CR_CHAN(insn->chanspec)];
+
+ return 1;
+}
+
+static int labpc_calib_write_insn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ int channel = CR_CHAN(insn->chanspec);
+
+ write_caldac(dev, channel, data[0]);
+ return 1;
+}
+
+static int labpc_eeprom_read_insn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ data[0] = devpriv->eeprom_data[CR_CHAN(insn->chanspec)];
+
+ return 1;
+}
+
+static int labpc_eeprom_write_insn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ int channel = CR_CHAN(insn->chanspec);
+ int ret;
+
+ // only allow writes to user area of eeprom
+ if (channel < 16 || channel > 127) {
+ printk("eeprom writes are only allowed to channels 16 through 127 (the pointer and user areas)");
+ return -EINVAL;
+ }
+
+ ret = labpc_eeprom_write(dev, channel, data[0]);
+ if (ret < 0)
+ return ret;
+
+ return 1;
+}
+
+// utility function that suggests a dma transfer size in bytes
+static unsigned int labpc_suggest_transfer_size(comedi_cmd cmd)
+{
+ unsigned int size;
+ unsigned int freq;
+
+ if (cmd.convert_src == TRIG_TIMER)
+ freq = 1000000000 / cmd.convert_arg;
+ // return some default value
+ else
+ freq = 0xffffffff;
+
+ // make buffer fill in no more than 1/3 second
+ size = (freq / 3) * sample_size;
+
+ // set a minimum and maximum size allowed
+ if (size > dma_buffer_size)
+ size = dma_buffer_size - dma_buffer_size % sample_size;
+ else if (size < sample_size)
+ size = sample_size;
+
+ return size;
+}
+
+// figures out what counter values to use based on command
+static void labpc_adc_timing(comedi_device * dev, comedi_cmd * cmd)
+{
+ const int max_counter_value = 0x10000; // max value for 16 bit counter in mode 2
+ const int min_counter_value = 2; // min value for 16 bit counter in mode 2
+ unsigned int base_period;
+
+ // if both convert and scan triggers are TRIG_TIMER, then they both rely on counter b0
+ if (labpc_ai_convert_period(cmd) && labpc_ai_scan_period(cmd)) {
+ // pick the lowest b0 divisor value we can (for maximum input clock speed on convert and scan counters)
+ devpriv->divisor_b0 = (labpc_ai_scan_period(cmd) - 1) /
+ (LABPC_TIMER_BASE * max_counter_value) + 1;
+ if (devpriv->divisor_b0 < min_counter_value)
+ devpriv->divisor_b0 = min_counter_value;
+ if (devpriv->divisor_b0 > max_counter_value)
+ devpriv->divisor_b0 = max_counter_value;
+
+ base_period = LABPC_TIMER_BASE * devpriv->divisor_b0;
+
+ // set a0 for conversion frequency and b1 for scan frequency
+ switch (cmd->flags & TRIG_ROUND_MASK) {
+ default:
+ case TRIG_ROUND_NEAREST:
+ devpriv->divisor_a0 =
+ (labpc_ai_convert_period(cmd) +
+ (base_period / 2)) / base_period;
+ devpriv->divisor_b1 =
+ (labpc_ai_scan_period(cmd) +
+ (base_period / 2)) / base_period;
+ break;
+ case TRIG_ROUND_UP:
+ devpriv->divisor_a0 =
+ (labpc_ai_convert_period(cmd) + (base_period -
+ 1)) / base_period;
+ devpriv->divisor_b1 =
+ (labpc_ai_scan_period(cmd) + (base_period -
+ 1)) / base_period;
+ break;
+ case TRIG_ROUND_DOWN:
+ devpriv->divisor_a0 =
+ labpc_ai_convert_period(cmd) / base_period;
+ devpriv->divisor_b1 =
+ labpc_ai_scan_period(cmd) / base_period;
+ break;
+ }
+ // make sure a0 and b1 values are acceptable
+ if (devpriv->divisor_a0 < min_counter_value)
+ devpriv->divisor_a0 = min_counter_value;
+ if (devpriv->divisor_a0 > max_counter_value)
+ devpriv->divisor_a0 = max_counter_value;
+ if (devpriv->divisor_b1 < min_counter_value)
+ devpriv->divisor_b1 = min_counter_value;
+ if (devpriv->divisor_b1 > max_counter_value)
+ devpriv->divisor_b1 = max_counter_value;
+ // write corrected timings to command
+ labpc_set_ai_convert_period(cmd,
+ base_period * devpriv->divisor_a0);
+ labpc_set_ai_scan_period(cmd,
+ base_period * devpriv->divisor_b1);
+ // if only one TRIG_TIMER is used, we can employ the generic cascaded timing functions
+ } else if (labpc_ai_scan_period(cmd)) {
+ unsigned int scan_period;
+
+ scan_period = labpc_ai_scan_period(cmd);
+ /* calculate cascaded counter values that give desired scan timing */
+ i8253_cascade_ns_to_timer_2div(LABPC_TIMER_BASE,
+ &(devpriv->divisor_b1), &(devpriv->divisor_b0),
+ &scan_period, cmd->flags & TRIG_ROUND_MASK);
+ labpc_set_ai_scan_period(cmd, scan_period);
+ } else if (labpc_ai_convert_period(cmd)) {
+ unsigned int convert_period;
+
+ convert_period = labpc_ai_convert_period(cmd);
+ /* calculate cascaded counter values that give desired conversion timing */
+ i8253_cascade_ns_to_timer_2div(LABPC_TIMER_BASE,
+ &(devpriv->divisor_a0), &(devpriv->divisor_b0),
+ &convert_period, cmd->flags & TRIG_ROUND_MASK);
+ labpc_set_ai_convert_period(cmd, convert_period);
+ }
+}
+
+static int labpc_dio_mem_callback(int dir, int port, int data,
+ unsigned long iobase)
+{
+ if (dir) {
+ writeb(data, (void *)(iobase + port));
+ return 0;
+ } else {
+ return readb((void *)(iobase + port));
+ }
+}
+
+// lowlevel write to eeprom/dac
+static void labpc_serial_out(comedi_device * dev, unsigned int value,
+ unsigned int value_width)
+{
+ int i;
+
+ for (i = 1; i <= value_width; i++) {
+ // clear serial clock
+ devpriv->command5_bits &= ~SCLOCK_BIT;
+ // send bits most significant bit first
+ if (value & (1 << (value_width - i)))
+ devpriv->command5_bits |= SDATA_BIT;
+ else
+ devpriv->command5_bits &= ~SDATA_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits,
+ dev->iobase + COMMAND5_REG);
+ // set clock to load bit
+ devpriv->command5_bits |= SCLOCK_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits,
+ dev->iobase + COMMAND5_REG);
+ }
+}
+
+// lowlevel read from eeprom
+static unsigned int labpc_serial_in(comedi_device * dev)
+{
+ unsigned int value = 0;
+ int i;
+ const int value_width = 8; // number of bits wide values are
+
+ for (i = 1; i <= value_width; i++) {
+ // set serial clock
+ devpriv->command5_bits |= SCLOCK_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits,
+ dev->iobase + COMMAND5_REG);
+ // clear clock bit
+ devpriv->command5_bits &= ~SCLOCK_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits,
+ dev->iobase + COMMAND5_REG);
+ // read bits most significant bit first
+ comedi_udelay(1);
+ devpriv->status2_bits =
+ devpriv->read_byte(dev->iobase + STATUS2_REG);
+ if (devpriv->status2_bits & EEPROM_OUT_BIT) {
+ value |= 1 << (value_width - i);
+ }
+ }
+
+ return value;
+}
+
+static unsigned int labpc_eeprom_read(comedi_device * dev, unsigned int address)
+{
+ unsigned int value;
+ const int read_instruction = 0x3; // bits to tell eeprom to expect a read
+ const int write_length = 8; // 8 bit write lengths to eeprom
+
+ // enable read/write to eeprom
+ devpriv->command5_bits &= ~EEPROM_EN_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits, dev->iobase + COMMAND5_REG);
+ devpriv->command5_bits |= EEPROM_EN_BIT | EEPROM_WRITE_UNPROTECT_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits, dev->iobase + COMMAND5_REG);
+
+ // send read instruction
+ labpc_serial_out(dev, read_instruction, write_length);
+ // send 8 bit address to read from
+ labpc_serial_out(dev, address, write_length);
+ // read result
+ value = labpc_serial_in(dev);
+
+ // disable read/write to eeprom
+ devpriv->command5_bits &= ~EEPROM_EN_BIT & ~EEPROM_WRITE_UNPROTECT_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits, dev->iobase + COMMAND5_REG);
+
+ return value;
+}
+
+static unsigned int labpc_eeprom_write(comedi_device * dev,
+ unsigned int address, unsigned int value)
+{
+ const int write_enable_instruction = 0x6;
+ const int write_instruction = 0x2;
+ const int write_length = 8; // 8 bit write lengths to eeprom
+ const int write_in_progress_bit = 0x1;
+ const int timeout = 10000;
+ int i;
+
+ // make sure there isn't already a write in progress
+ for (i = 0; i < timeout; i++) {
+ if ((labpc_eeprom_read_status(dev) & write_in_progress_bit) ==
+ 0)
+ break;
+ }
+ if (i == timeout) {
+ comedi_error(dev, "eeprom write timed out");
+ return -ETIME;
+ }
+ // update software copy of eeprom
+ devpriv->eeprom_data[address] = value;
+
+ // enable read/write to eeprom
+ devpriv->command5_bits &= ~EEPROM_EN_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits, dev->iobase + COMMAND5_REG);
+ devpriv->command5_bits |= EEPROM_EN_BIT | EEPROM_WRITE_UNPROTECT_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits, dev->iobase + COMMAND5_REG);
+
+ // send write_enable instruction
+ labpc_serial_out(dev, write_enable_instruction, write_length);
+ devpriv->command5_bits &= ~EEPROM_EN_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits, dev->iobase + COMMAND5_REG);
+
+ // send write instruction
+ devpriv->command5_bits |= EEPROM_EN_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits, dev->iobase + COMMAND5_REG);
+ labpc_serial_out(dev, write_instruction, write_length);
+ // send 8 bit address to write to
+ labpc_serial_out(dev, address, write_length);
+ // write value
+ labpc_serial_out(dev, value, write_length);
+ devpriv->command5_bits &= ~EEPROM_EN_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits, dev->iobase + COMMAND5_REG);
+
+ // disable read/write to eeprom
+ devpriv->command5_bits &= ~EEPROM_EN_BIT & ~EEPROM_WRITE_UNPROTECT_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits, dev->iobase + COMMAND5_REG);
+
+ return 0;
+}
+
+static unsigned int labpc_eeprom_read_status(comedi_device * dev)
+{
+ unsigned int value;
+ const int read_status_instruction = 0x5;
+ const int write_length = 8; // 8 bit write lengths to eeprom
+
+ // enable read/write to eeprom
+ devpriv->command5_bits &= ~EEPROM_EN_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits, dev->iobase + COMMAND5_REG);
+ devpriv->command5_bits |= EEPROM_EN_BIT | EEPROM_WRITE_UNPROTECT_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits, dev->iobase + COMMAND5_REG);
+
+ // send read status instruction
+ labpc_serial_out(dev, read_status_instruction, write_length);
+ // read result
+ value = labpc_serial_in(dev);
+
+ // disable read/write to eeprom
+ devpriv->command5_bits &= ~EEPROM_EN_BIT & ~EEPROM_WRITE_UNPROTECT_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits, dev->iobase + COMMAND5_REG);
+
+ return value;
+}
+
+// writes to 8 bit calibration dacs
+static void write_caldac(comedi_device * dev, unsigned int channel,
+ unsigned int value)
+{
+ if (value == devpriv->caldac[channel])
+ return;
+ devpriv->caldac[channel] = value;
+
+ // clear caldac load bit and make sure we don't write to eeprom
+ devpriv->command5_bits &=
+ ~CALDAC_LOAD_BIT & ~EEPROM_EN_BIT & ~EEPROM_WRITE_UNPROTECT_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits, dev->iobase + COMMAND5_REG);
+
+ // write 4 bit channel
+ labpc_serial_out(dev, channel, 4);
+ // write 8 bit caldac value
+ labpc_serial_out(dev, value, 8);
+
+ // set and clear caldac bit to load caldac value
+ devpriv->command5_bits |= CALDAC_LOAD_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits, dev->iobase + COMMAND5_REG);
+ devpriv->command5_bits &= ~CALDAC_LOAD_BIT;
+ comedi_udelay(1);
+ devpriv->write_byte(devpriv->command5_bits, dev->iobase + COMMAND5_REG);
+}
+
+#ifdef CONFIG_COMEDI_PCI
+COMEDI_PCI_INITCLEANUP(driver_labpc, labpc_pci_table);
+#else
+COMEDI_INITCLEANUP(driver_labpc);
+#endif
+
+EXPORT_SYMBOL_GPL(labpc_common_attach);
+EXPORT_SYMBOL_GPL(labpc_common_detach);
+EXPORT_SYMBOL_GPL(range_labpc_1200_ai);
+EXPORT_SYMBOL_GPL(labpc_1200_ai_gain_bits);
+EXPORT_SYMBOL_GPL(labpc_1200_is_unipolar);
--- /dev/null
+/*
+ comedi/drivers/ni_labpc_cs.c
+ Driver for National Instruments daqcard-1200 boards
+ Copyright (C) 2001, 2002, 2003 Frank Mori Hess <fmhess@users.sourceforge.net>
+
+ PCMCIA crap is adapted from dummy_cs.c 1.31 2001/08/24 12:13:13
+ from the pcmcia package.
+ The initial developer of the pcmcia dummy_cs.c code is David A. Hinds
+ <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ are Copyright (C) 1999 David A. Hinds.
+
+ 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+************************************************************************
+*/
+/*
+Driver: ni_labpc_cs
+Description: National Instruments Lab-PC (& compatibles)
+Author: Frank Mori Hess <fmhess@users.sourceforge.net>
+Devices: [National Instruments] DAQCard-1200 (daqcard-1200)
+Status: works
+
+Thanks go to Fredrik Lingvall for much testing and perseverance in
+helping to debug daqcard-1200 support.
+
+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.
+
+Configuration options:
+ none
+
+The daqcard-1200 has quirky chanlist requirements
+when scanning multiple channels. Multiple channel scan
+sequence must start at highest channel, then decrement down to
+channel 0. Chanlists consisting of all one channel
+are also legal, and allow you to pace conversions in bursts.
+
+*/
+
+/*
+
+NI manuals:
+340988a (daqcard-1200)
+
+*/
+
+#undef LABPC_DEBUG
+//#define LABPC_DEBUG // enable debugging messages
+
+#include "../comedidev.h"
+
+#include <linux/delay.h>
+#include <linux/version.h>
+
+#include "8253.h"
+#include "8255.h"
+#include "comedi_fc.h"
+#include "ni_labpc.h"
+
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/cisreg.h>
+#include <pcmcia/ds.h>
+
+static struct pcmcia_device *pcmcia_cur_dev = NULL;
+
+static int labpc_attach(comedi_device * dev, comedi_devconfig * it);
+
+static const labpc_board labpc_cs_boards[] = {
+ {
+ name: "daqcard-1200",
+ device_id:0x103, // 0x10b is manufacturer id, 0x103 is device id
+ ai_speed:10000,
+ bustype: pcmcia_bustype,
+ register_layout:labpc_1200_layout,
+ has_ao: 1,
+ ai_range_table:&range_labpc_1200_ai,
+ ai_range_code:labpc_1200_ai_gain_bits,
+ ai_range_is_unipolar:labpc_1200_is_unipolar,
+ ai_scan_up:0,
+ memory_mapped_io:0,
+ },
+ /* duplicate entry, to support using alternate name */
+ {
+ name: "ni_labpc_cs",
+ device_id:0x103,
+ ai_speed:10000,
+ bustype: pcmcia_bustype,
+ register_layout:labpc_1200_layout,
+ has_ao: 1,
+ ai_range_table:&range_labpc_1200_ai,
+ ai_range_code:labpc_1200_ai_gain_bits,
+ ai_range_is_unipolar:labpc_1200_is_unipolar,
+ ai_scan_up:0,
+ memory_mapped_io:0,
+ },
+};
+
+/*
+ * Useful for shorthand access to the particular board structure
+ */
+#define thisboard ((const labpc_board *)dev->board_ptr)
+
+static comedi_driver driver_labpc_cs = {
+ .driver_name = "ni_labpc_cs",
+ .module = THIS_MODULE,
+ .attach = &labpc_attach,
+ .detach = &labpc_common_detach,
+ .num_names = sizeof(labpc_cs_boards) / sizeof(labpc_board),
+ .board_name = &labpc_cs_boards[0].name,
+ .offset = sizeof(labpc_board),
+};
+
+static int labpc_attach(comedi_device * dev, comedi_devconfig * it)
+{
+ unsigned long iobase = 0;
+ unsigned int irq = 0;
+ struct pcmcia_device *link;
+
+ /* allocate and initialize dev->private */
+ if (alloc_private(dev, sizeof(labpc_private)) < 0)
+ return -ENOMEM;
+
+ // get base address, irq etc. based on bustype
+ switch (thisboard->bustype) {
+ case pcmcia_bustype:
+ link = pcmcia_cur_dev; /* XXX hack */
+ if (!link)
+ return -EIO;
+ iobase = link->io.BasePort1;
+ irq = link->irq.AssignedIRQ;
+ break;
+ default:
+ printk("bug! couldn't determine board type\n");
+ return -EINVAL;
+ break;
+ }
+ return labpc_common_attach(dev, iobase, irq, 0);
+}
+
+/*
+ All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
+ you do not define PCMCIA_DEBUG at all, all the debug code will be
+ left out. If you compile with PCMCIA_DEBUG=0, the debug code will
+ be present but disabled -- but it can then be enabled for specific
+ modules at load time with a 'pc_debug=#' option to insmod.
+*/
+#ifdef PCMCIA_DEBUG
+static int pc_debug = PCMCIA_DEBUG;
+module_param(pc_debug, int, 0644);
+#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
+static const char *version =
+ "ni_labpc.c, based on dummy_cs.c 1.31 2001/08/24 12:13:13";
+#else
+#define DEBUG(n, args...)
+#endif
+
+/*====================================================================*/
+
+/*
+ The event() function is this driver's Card Services event handler.
+ It will be called by Card Services when an appropriate card status
+ event is received. The config() and release() entry points are
+ used to configure or release a socket, in response to card
+ insertion and ejection events. They are invoked from the dummy
+ event handler.
+
+ Kernel version 2.6.16 upwards uses suspend() and resume() functions
+ instead of an event() function.
+*/
+
+static void labpc_config(struct pcmcia_device *link);
+static void labpc_release(struct pcmcia_device *link);
+static int labpc_cs_suspend(struct pcmcia_device *p_dev);
+static int labpc_cs_resume(struct pcmcia_device *p_dev);
+
+/*
+ The attach() and detach() entry points are used to create and destroy
+ "instances" of the driver, where each instance represents everything
+ needed to manage one actual PCMCIA card.
+*/
+
+static int labpc_cs_attach(struct pcmcia_device *);
+static void labpc_cs_detach(struct pcmcia_device *);
+
+/*
+ You'll also need to prototype all the functions that will actually
+ be used to talk to your device. See 'memory_cs' for a good example
+ of a fully self-sufficient driver; the other drivers rely more or
+ less on other parts of the kernel.
+*/
+
+/*
+ The dev_info variable is the "key" that is used to match up this
+ device driver with appropriate cards, through the card configuration
+ database.
+*/
+
+static const dev_info_t dev_info = "daqcard-1200";
+
+typedef struct local_info_t {
+ struct pcmcia_device *link;
+ dev_node_t node;
+ int stop;
+ struct bus_operations *bus;
+} local_info_t;
+
+/*======================================================================
+
+ labpc_cs_attach() creates an "instance" of the driver, allocating
+ local data structures for one device. The device is registered
+ with Card Services.
+
+ The dev_link structure is initialized, but we don't actually
+ configure the card at this point -- we wait until we receive a
+ card insertion event.
+
+======================================================================*/
+
+static int labpc_cs_attach(struct pcmcia_device *link)
+{
+ local_info_t *local;
+
+ DEBUG(0, "labpc_cs_attach()\n");
+
+ /* Allocate space for private device-specific data */
+ local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
+ if (!local)
+ return -ENOMEM;
+ local->link = link;
+ link->priv = local;
+
+ /* Interrupt setup */
+ link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_FORCED_PULSE;
+ link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_PULSE_ID;
+ link->irq.Handler = NULL;
+
+ /*
+ General socket configuration defaults can go here. In this
+ client, we assume very little, and rely on the CIS for almost
+ everything. In most clients, many details (i.e., number, sizes,
+ and attributes of IO windows) are fixed by the nature of the
+ device, and can be hard-wired here.
+ */
+ link->conf.Attributes = 0;
+ link->conf.IntType = INT_MEMORY_AND_IO;
+
+ pcmcia_cur_dev = link;
+
+ labpc_config(link);
+
+ return 0;
+} /* labpc_cs_attach */
+
+/*======================================================================
+
+ This deletes a driver "instance". The device is de-registered
+ with Card Services. If it has been released, all local data
+ structures are freed. Otherwise, the structures will be freed
+ when the device is released.
+
+======================================================================*/
+
+static void labpc_cs_detach(struct pcmcia_device *link)
+{
+ DEBUG(0, "labpc_cs_detach(0x%p)\n", link);
+
+ /*
+ If the device is currently configured and active, we won't
+ actually delete it yet. Instead, it is marked so that when
+ the release() function is called, that will trigger a proper
+ detach().
+ */
+ if (link->dev_node) {
+ ((local_info_t *) link->priv)->stop = 1;
+ labpc_release(link);
+ }
+
+ /* This points to the parent local_info_t struct */
+ if (link->priv)
+ kfree(link->priv);
+
+} /* labpc_cs_detach */
+
+/*======================================================================
+
+ labpc_config() is scheduled to run after a CARD_INSERTION event
+ is received, to configure the PCMCIA socket, and to make the
+ device available to the system.
+
+======================================================================*/
+
+static void labpc_config(struct pcmcia_device *link)
+{
+ local_info_t *dev = link->priv;
+ tuple_t tuple;
+ cisparse_t parse;
+ int last_ret;
+ u_char buf[64];
+ win_req_t req;
+ memreq_t map;
+ cistpl_cftable_entry_t dflt = { 0 };
+
+ DEBUG(0, "labpc_config(0x%p)\n", link);
+
+ /*
+ This reads the card's CONFIG tuple to find its configuration
+ registers.
+ */
+ tuple.DesiredTuple = CISTPL_CONFIG;
+ tuple.Attributes = 0;
+ tuple.TupleData = buf;
+ tuple.TupleDataMax = sizeof(buf);
+ tuple.TupleOffset = 0;
+ if ((last_ret = pcmcia_get_first_tuple(link, &tuple))) {
+ cs_error(link, GetFirstTuple, last_ret);
+ goto cs_failed;
+ }
+ if ((last_ret = pcmcia_get_tuple_data(link, &tuple))) {
+ cs_error(link, GetTupleData, last_ret);
+ goto cs_failed;
+ }
+ if ((last_ret = pcmcia_parse_tuple(&tuple, &parse))) {
+ cs_error(link, ParseTuple, last_ret);
+ goto cs_failed;
+ }
+ link->conf.ConfigBase = parse.config.base;
+ link->conf.Present = parse.config.rmask[0];
+
+ /*
+ In this loop, we scan the CIS for configuration table entries,
+ each of which describes a valid card configuration, including
+ voltage, IO window, memory window, and interrupt settings.
+
+ We make no assumptions about the card to be configured: we use
+ just the information available in the CIS. In an ideal world,
+ this would work for any PCMCIA card, but it requires a complete
+ and accurate CIS. In practice, a driver usually "knows" most of
+ these things without consulting the CIS, and most client drivers
+ will only use the CIS to fill in implementation-defined details.
+ */
+ tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+ if ((last_ret = pcmcia_get_first_tuple(link, &tuple))) {
+ cs_error(link, GetFirstTuple, last_ret);
+ goto cs_failed;
+ }
+ while (1) {
+ cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
+ if (pcmcia_get_tuple_data(link, &tuple))
+ goto next_entry;
+ if (pcmcia_parse_tuple(&tuple, &parse))
+ goto next_entry;
+
+ if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
+ dflt = *cfg;
+ if (cfg->index == 0)
+ goto next_entry;
+ link->conf.ConfigIndex = cfg->index;
+
+ /* Does this card need audio output? */
+ if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
+ link->conf.Attributes |= CONF_ENABLE_SPKR;
+ link->conf.Status = CCSR_AUDIO_ENA;
+ }
+
+ /* Do we need to allocate an interrupt? */
+ if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
+ link->conf.Attributes |= CONF_ENABLE_IRQ;
+
+ /* IO window settings */
+ link->io.NumPorts1 = link->io.NumPorts2 = 0;
+ if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
+ cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
+ link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+ link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
+ link->io.BasePort1 = io->win[0].base;
+ link->io.NumPorts1 = io->win[0].len;
+ if (io->nwin > 1) {
+ link->io.Attributes2 = link->io.Attributes1;
+ link->io.BasePort2 = io->win[1].base;
+ link->io.NumPorts2 = io->win[1].len;
+ }
+ /* This reserves IO space but doesn't actually enable it */
+ if (pcmcia_request_io(link, &link->io))
+ goto next_entry;
+ }
+
+ if ((cfg->mem.nwin > 0) || (dflt.mem.nwin > 0)) {
+ cistpl_mem_t *mem =
+ (cfg->mem.nwin) ? &cfg->mem : &dflt.mem;
+ req.Attributes = WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM;
+ req.Attributes |= WIN_ENABLE;
+ req.Base = mem->win[0].host_addr;
+ req.Size = mem->win[0].len;
+ if (req.Size < 0x1000)
+ req.Size = 0x1000;
+ req.AccessSpeed = 0;
+ link->win = (window_handle_t) link;
+ if (pcmcia_request_window(&link, &req, &link->win))
+ goto next_entry;
+ map.Page = 0;
+ map.CardOffset = mem->win[0].card_addr;
+ if (pcmcia_map_mem_page(link->win, &map))
+ goto next_entry;
+ }
+ /* If we got this far, we're cool! */
+ break;
+
+ next_entry:
+ if ((last_ret = pcmcia_get_next_tuple(link, &tuple))) {
+ cs_error(link, GetNextTuple, last_ret);
+ goto cs_failed;
+ }
+ }
+
+ /*
+ Allocate an interrupt line. Note that this does not assign a
+ handler to the interrupt, unless the 'Handler' member of the
+ irq structure is initialized.
+ */
+ if (link->conf.Attributes & CONF_ENABLE_IRQ)
+ if ((last_ret = pcmcia_request_irq(link, &link->irq))) {
+ cs_error(link, RequestIRQ, last_ret);
+ goto cs_failed;
+ }
+
+ /*
+ This actually configures the PCMCIA socket -- setting up
+ the I/O windows and the interrupt mapping, and putting the
+ card and host interface into "Memory and IO" mode.
+ */
+ if ((last_ret = pcmcia_request_configuration(link, &link->conf))) {
+ cs_error(link, RequestConfiguration, last_ret);
+ goto cs_failed;
+ }
+
+ /*
+ At this point, the dev_node_t structure(s) need to be
+ initialized and arranged in a linked list at link->dev.
+ */
+ sprintf(dev->node.dev_name, "daqcard-1200");
+ dev->node.major = dev->node.minor = 0;
+ link->dev_node = &dev->node;
+
+ /* Finally, report what we've done */
+ printk(KERN_INFO "%s: index 0x%02x",
+ dev->node.dev_name, link->conf.ConfigIndex);
+ if (link->conf.Attributes & CONF_ENABLE_IRQ)
+ printk(", irq %d", link->irq.AssignedIRQ);
+ if (link->io.NumPorts1)
+ printk(", io 0x%04x-0x%04x", link->io.BasePort1,
+ link->io.BasePort1 + link->io.NumPorts1 - 1);
+ if (link->io.NumPorts2)
+ printk(" & 0x%04x-0x%04x", link->io.BasePort2,
+ link->io.BasePort2 + link->io.NumPorts2 - 1);
+ if (link->win)
+ printk(", mem 0x%06lx-0x%06lx", req.Base,
+ req.Base + req.Size - 1);
+ printk("\n");
+
+ return;
+
+ cs_failed:
+ labpc_release(link);
+
+} /* labpc_config */
+
+static void labpc_release(struct pcmcia_device *link)
+{
+ DEBUG(0, "labpc_release(0x%p)\n", link);
+
+ pcmcia_disable_device(link);
+} /* labpc_release */
+
+/*======================================================================
+
+ The card status event handler. Mostly, this schedules other
+ stuff to run after an event is received.
+
+ When a CARD_REMOVAL event is received, we immediately set a
+ private flag to block future accesses to this device. All the
+ functions that actually access the device should check this flag
+ to make sure the card is still present.
+
+======================================================================*/
+
+static int labpc_cs_suspend(struct pcmcia_device *link)
+{
+ local_info_t *local = link->priv;
+
+ /* Mark the device as stopped, to block IO until later */
+ local->stop = 1;
+ return 0;
+} /* labpc_cs_suspend */
+
+static int labpc_cs_resume(struct pcmcia_device *link)
+{
+ local_info_t *local = link->priv;
+
+ local->stop = 0;
+ return 0;
+} /* labpc_cs_resume */
+
+/*====================================================================*/
+
+static struct pcmcia_device_id labpc_cs_ids[] = {
+ /* N.B. These IDs should match those in labpc_cs_boards (ni_labpc.c) */
+ PCMCIA_DEVICE_MANF_CARD(0x010b, 0x0103), /* daqcard-1200 */
+ PCMCIA_DEVICE_NULL
+};
+
+MODULE_DEVICE_TABLE(pcmcia, labpc_cs_ids);
+
+struct pcmcia_driver labpc_cs_driver = {
+ .probe = labpc_cs_attach,
+ .remove = labpc_cs_detach,
+ .suspend = labpc_cs_suspend,
+ .resume = labpc_cs_resume,
+ .id_table = labpc_cs_ids,
+ .owner = THIS_MODULE,
+ .drv = {
+ .name = dev_info,
+ },
+};
+
+static int __init init_labpc_cs(void)
+{
+ DEBUG(0, "%s\n", version);
+ pcmcia_register_driver(&labpc_cs_driver);
+ return 0;
+}
+
+static void __exit exit_labpc_cs(void)
+{
+ DEBUG(0, "ni_labpc: unloading\n");
+ pcmcia_unregister_driver(&labpc_cs_driver);
+}
+
+int __init labpc_init_module(void)
+{
+ int ret;
+
+ ret = init_labpc_cs();
+ if (ret < 0)
+ return ret;
+
+ return comedi_driver_register(&driver_labpc_cs);
+}
+
+void __exit labpc_exit_module(void)
+{
+ exit_labpc_cs();
+ comedi_driver_unregister(&driver_labpc_cs);
+}
+
+MODULE_LICENSE("GPL");
+module_init(labpc_init_module);
+module_exit(labpc_exit_module);
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff