// SPDX-License-Identifier: GPL-2.0+ /* * comedi/drivers/das800.c * Driver for Keitley das800 series boards and compatibles * Copyright (C) 2000 Frank Mori Hess <[email protected]> * * COMEDI - Linux Control and Measurement Device Interface * Copyright (C) 2000 David A. Schleef <[email protected]> */ /* * Driver: das800 * Description: Keithley Metrabyte DAS800 (& compatibles) * Author: Frank Mori Hess <[email protected]> * Devices: [Keithley Metrabyte] DAS-800 (das-800), DAS-801 (das-801), * DAS-802 (das-802), * [Measurement Computing] CIO-DAS800 (cio-das800), * CIO-DAS801 (cio-das801), CIO-DAS802 (cio-das802), * CIO-DAS802/16 (cio-das802/16) * Status: works, cio-das802/16 untested - email me if you have tested it * * Configuration options: * [0] - I/O port base address * [1] - IRQ (optional, required for timed or externally triggered conversions) * * Notes: * IRQ can be omitted, although the cmd interface will not work without it. * * All entries in the channel/gain list must use the same gain and be * consecutive channels counting upwards in channel number (these are * hardware limitations.) * * I've never tested the gain setting stuff since I only have a * DAS-800 board with fixed gain. * * The cio-das802/16 does not have a fifo-empty status bit! Therefore * only fifo-half-full transfers are possible with this card. * * cmd triggers supported: * start_src: TRIG_NOW | TRIG_EXT * scan_begin_src: TRIG_FOLLOW * scan_end_src: TRIG_COUNT * convert_src: TRIG_TIMER | TRIG_EXT * stop_src: TRIG_NONE | TRIG_COUNT */ #include <linux/module.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/comedi/comedidev.h> #include <linux/comedi/comedi_8254.h> #define N_CHAN_AI … /* Registers for the das800 */ #define DAS800_LSB … #define FIFO_EMPTY … #define FIFO_OVF … #define DAS800_MSB … #define DAS800_CONTROL1 … #define CONTROL1_INTE … #define DAS800_CONV_CONTROL … #define ITE … #define CASC … #define DTEN … #define IEOC … #define EACS … #define CONV_HCEN … #define DAS800_SCAN_LIMITS … #define DAS800_STATUS … #define IRQ … #define BUSY … #define DAS800_GAIN … #define CIO_FFOV … #define CIO_ENHF … #define CONTROL1 … #define CONV_CONTROL … #define SCAN_LIMITS … #define ID … #define DAS800_8254 … #define DAS800_STATUS2 … #define STATUS2_HCEN … #define STATUS2_INTE … #define DAS800_ID … #define DAS802_16_HALF_FIFO_SZ … struct das800_board { … }; static const struct comedi_lrange range_das801_ai = …; static const struct comedi_lrange range_cio_das801_ai = …; static const struct comedi_lrange range_das802_ai = …; static const struct comedi_lrange range_das80216_ai = …; enum das800_boardinfo { … }; static const struct das800_board das800_boards[] = …; struct das800_private { … }; static void das800_ind_write(struct comedi_device *dev, unsigned int val, unsigned int reg) { … } static unsigned int das800_ind_read(struct comedi_device *dev, unsigned int reg) { … } static void das800_enable(struct comedi_device *dev) { … } static void das800_disable(struct comedi_device *dev) { … } static int das800_cancel(struct comedi_device *dev, struct comedi_subdevice *s) { … } static int das800_ai_check_chanlist(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_cmd *cmd) { … } static int das800_ai_do_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_cmd *cmd) { … } static int das800_ai_do_cmd(struct comedi_device *dev, struct comedi_subdevice *s) { … } static unsigned int das800_ai_get_sample(struct comedi_device *dev) { … } static irqreturn_t das800_interrupt(int irq, void *d) { … } static int das800_ai_eoc(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned long context) { … } static int das800_ai_insn_read(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static int das800_di_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static int das800_do_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static const struct das800_board *das800_probe(struct comedi_device *dev) { … } static int das800_attach(struct comedi_device *dev, struct comedi_devconfig *it) { const struct das800_board *board; struct das800_private *devpriv; struct comedi_subdevice *s; unsigned int irq = it->options[1]; unsigned long irq_flags; int ret; devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); if (!devpriv) return -ENOMEM; ret = comedi_request_region(dev, it->options[0], 0x8); if (ret) return ret; board = das800_probe(dev); if (!board) return -ENODEV; dev->board_ptr = board; dev->board_name = board->name; if (irq > 1 && irq <= 7) { ret = request_irq(irq, das800_interrupt, 0, "das800", dev); if (ret == 0) dev->irq = irq; } dev->pacer = comedi_8254_io_alloc(dev->iobase + DAS800_8254, I8254_OSC_BASE_1MHZ, I8254_IO8, 0); if (IS_ERR(dev->pacer)) return PTR_ERR(dev->pacer); ret = comedi_alloc_subdevices(dev, 3); if (ret) return ret; /* Analog Input subdevice */ s = &dev->subdevices[0]; dev->read_subdev = s; s->type = COMEDI_SUBD_AI; s->subdev_flags = SDF_READABLE | SDF_GROUND; s->n_chan = 8; s->maxdata = (1 << board->resolution) - 1; s->range_table = board->ai_range; s->insn_read = das800_ai_insn_read; if (dev->irq) { s->subdev_flags |= SDF_CMD_READ; s->len_chanlist = 8; s->do_cmdtest = das800_ai_do_cmdtest; s->do_cmd = das800_ai_do_cmd; s->cancel = das800_cancel; } /* Digital Input subdevice */ s = &dev->subdevices[1]; s->type = COMEDI_SUBD_DI; s->subdev_flags = SDF_READABLE; s->n_chan = 3; s->maxdata = 1; s->range_table = &range_digital; s->insn_bits = das800_di_insn_bits; /* Digital Output subdevice */ s = &dev->subdevices[2]; s->type = COMEDI_SUBD_DO; s->subdev_flags = SDF_WRITABLE; s->n_chan = 4; s->maxdata = 1; s->range_table = &range_digital; s->insn_bits = das800_do_insn_bits; das800_disable(dev); /* initialize digital out channels */ spin_lock_irqsave(&dev->spinlock, irq_flags); das800_ind_write(dev, CONTROL1_INTE | devpriv->do_bits, CONTROL1); spin_unlock_irqrestore(&dev->spinlock, irq_flags); return 0; }; static struct comedi_driver driver_das800 = …; module_comedi_driver(…); MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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