// SPDX-License-Identifier: GPL-2.0+ /* * Comedi driver for Data Translation DT2811 * * COMEDI - Linux Control and Measurement Device Interface * Copyright (C) David A. Schleef <[email protected]> */ /* * Driver: dt2811 * Description: Data Translation DT2811 * Author: ds * Devices: [Data Translation] DT2811-PGL (dt2811-pgl), DT2811-PGH (dt2811-pgh) * Status: works * * Configuration options: * [0] - I/O port base address * [1] - IRQ (optional, needed for async command support) * [2] - A/D reference (# of analog inputs) * 0 = single-ended (16 channels) * 1 = differential (8 channels) * 2 = pseudo-differential (16 channels) * [3] - A/D range (deprecated, see below) * [4] - D/A 0 range (deprecated, see below) * [5] - D/A 1 range (deprecated, see below) * * Notes: * - A/D ranges are not programmable but the gain is. The AI subdevice has * a range_table containing all the possible analog input range/gain * options for the dt2811-pgh or dt2811-pgl. Use the range that matches * your board configuration and the desired gain to correctly convert * between data values and physical units and to set the correct output * gain. * - D/A ranges are not programmable. The AO subdevice has a range_table * containing all the possible analog output ranges. Use the range * that matches your board configuration to convert between data * values and physical units. */ #include <linux/module.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/comedi/comedidev.h> /* * Register I/O map */ #define DT2811_ADCSR_REG … #define DT2811_ADCSR_ADDONE … #define DT2811_ADCSR_ADERROR … #define DT2811_ADCSR_ADBUSY … #define DT2811_ADCSR_CLRERROR … #define DT2811_ADCSR_DMAENB … #define DT2811_ADCSR_INTENB … #define DT2811_ADCSR_ADMODE(x) … #define DT2811_ADGCR_REG … #define DT2811_ADGCR_GAIN(x) … #define DT2811_ADGCR_CHAN(x) … #define DT2811_ADDATA_LO_REG … #define DT2811_ADDATA_HI_REG … #define DT2811_DADATA_LO_REG(x) … #define DT2811_DADATA_HI_REG(x) … #define DT2811_DI_REG … #define DT2811_DO_REG … #define DT2811_TMRCTR_REG … #define DT2811_TMRCTR_MANTISSA(x) … #define DT2811_TMRCTR_EXPONENT(x) … #define DT2811_OSC_BASE … /* * Timer frequency control: * DT2811_TMRCTR_MANTISSA DT2811_TMRCTR_EXPONENT * val divisor frequency val multiply divisor/divide frequency by * 0 1 600 kHz 0 1 * 1 10 60 kHz 1 10 * 2 2 300 kHz 2 100 * 3 3 200 kHz 3 1000 * 4 4 150 kHz 4 10000 * 5 5 120 kHz 5 100000 * 6 6 100 kHz 6 1000000 * 7 12 50 kHz 7 10000000 */ static const unsigned int dt2811_clk_dividers[] = …; static const unsigned int dt2811_clk_multipliers[] = …; /* * The Analog Input range is set using jumpers on the board. * * Input Range W9 W10 * -5V to +5V In Out * -2.5V to +2.5V In In * 0V to +5V Out In * * The gain may be set to 1, 2, 4, or 8 (on the dt2811-pgh) or to * 1, 10, 100, 500 (on the dt2811-pgl). */ static const struct comedi_lrange dt2811_pgh_ai_ranges = …; static const struct comedi_lrange dt2811_pgl_ai_ranges = …; /* * The Analog Output range is set per-channel using jumpers on the board. * * DAC0 Jumpers DAC1 Jumpers * Output Range W5 W6 W7 W8 W1 W2 W3 W4 * -5V to +5V In Out In Out In Out In Out * -2.5V to +2.5V In Out Out In In Out Out In * 0 to +5V Out In Out In Out In Out In */ static const struct comedi_lrange dt2811_ao_ranges = …; struct dt2811_board { … }; static const struct dt2811_board dt2811_boards[] = …; struct dt2811_private { … }; static unsigned int dt2811_ai_read_sample(struct comedi_device *dev, struct comedi_subdevice *s) { … } static irqreturn_t dt2811_interrupt(int irq, void *d) { … } static int dt2811_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s) { … } static void dt2811_ai_set_chanspec(struct comedi_device *dev, unsigned int chanspec) { … } static int dt2811_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) { … } static unsigned int dt2811_ns_to_timer(unsigned int *nanosec, unsigned int flags) { … } static int dt2811_ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_cmd *cmd) { … } static int dt2811_ai_eoc(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned long context) { … } static int dt2811_ai_insn_read(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static int dt2811_ao_insn_write(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static int dt2811_di_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static int dt2811_do_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static void dt2811_reset(struct comedi_device *dev) { … } static int dt2811_attach(struct comedi_device *dev, struct comedi_devconfig *it) { … } static struct comedi_driver dt2811_driver = …; module_comedi_driver(…); MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
Codebase Browser
linux