// SPDX-License-Identifier: GPL-2.0 /* * quatech_daqp_cs.c * Quatech DAQP PCMCIA data capture cards COMEDI client driver * Copyright (C) 2000, 2003 Brent Baccala <[email protected]> * The DAQP interface code in this file is released into the public domain. * * COMEDI - Linux Control and Measurement Device Interface * Copyright (C) 1998 David A. Schleef <[email protected]> * https://www.comedi.org/ * * Documentation for the DAQP PCMCIA cards can be found on Quatech's site: * ftp://ftp.quatech.com/Manuals/daqp-208.pdf * * This manual is for both the DAQP-208 and the DAQP-308. * * What works: * - A/D conversion * - 8 channels * - 4 gain ranges * - ground ref or differential * - single-shot and timed both supported * - D/A conversion, single-shot * - digital I/O * * What doesn't: * - any kind of triggering - external or D/A channel 1 * - the card's optional expansion board * - the card's timer (for anything other than A/D conversion) * - D/A update modes other than immediate (i.e, timed) * - fancier timing modes * - setting card's FIFO buffer thresholds to anything but default */ /* * Driver: quatech_daqp_cs * Description: Quatech DAQP PCMCIA data capture cards * Devices: [Quatech] DAQP-208 (daqp), DAQP-308 * Author: Brent Baccala <[email protected]> * Status: works */ #include <linux/module.h> #include <linux/comedi/comedi_pcmcia.h> /* * Register I/O map * * The D/A and timer registers can be accessed with 16-bit or 8-bit I/O * instructions. All other registers can only use 8-bit instructions. * * The FIFO and scanlist registers require two 8-bit instructions to * access the 16-bit data. Data is transferred LSB then MSB. */ #define DAQP_AI_FIFO_REG … #define DAQP_SCANLIST_REG … #define DAQP_SCANLIST_DIFFERENTIAL … #define DAQP_SCANLIST_GAIN(x) … #define DAQP_SCANLIST_CHANNEL(x) … #define DAQP_SCANLIST_START … #define DAQP_SCANLIST_EXT_GAIN(x) … #define DAQP_SCANLIST_EXT_CHANNEL(x) … #define DAQP_CTRL_REG … #define DAQP_CTRL_PACER_CLK(x) … #define DAQP_CTRL_PACER_CLK_EXT … #define DAQP_CTRL_PACER_CLK_5MHZ … #define DAQP_CTRL_PACER_CLK_1MHZ … #define DAQP_CTRL_PACER_CLK_100KHZ … #define DAQP_CTRL_EXPANSION … #define DAQP_CTRL_EOS_INT_ENA … #define DAQP_CTRL_FIFO_INT_ENA … #define DAQP_CTRL_TRIG_MODE … #define DAQP_CTRL_TRIG_SRC … #define DAQP_CTRL_TRIG_EDGE … #define DAQP_STATUS_REG … #define DAQP_STATUS_IDLE … #define DAQP_STATUS_RUNNING … #define DAQP_STATUS_DATA_LOST … #define DAQP_STATUS_END_OF_SCAN … #define DAQP_STATUS_FIFO_THRESHOLD … #define DAQP_STATUS_FIFO_FULL … #define DAQP_STATUS_FIFO_NEARFULL … #define DAQP_STATUS_FIFO_EMPTY … /* these bits clear when the status register is read */ #define DAQP_STATUS_EVENTS … #define DAQP_DI_REG … #define DAQP_DO_REG … #define DAQP_PACER_LOW_REG … #define DAQP_PACER_MID_REG … #define DAQP_PACER_HIGH_REG … #define DAQP_CMD_REG … /* the monostable bits are self-clearing after the function is complete */ #define DAQP_CMD_ARM … #define DAQP_CMD_RSTF … #define DAQP_CMD_RSTQ … #define DAQP_CMD_STOP … #define DAQP_CMD_LATCH … #define DAQP_CMD_SCANRATE(x) … #define DAQP_CMD_SCANRATE_100KHZ … #define DAQP_CMD_SCANRATE_50KHZ … #define DAQP_CMD_SCANRATE_25KHZ … #define DAQP_CMD_FIFO_DATA … #define DAQP_AO_REG … #define DAQP_TIMER_REG … #define DAQP_AUX_REG … /* Auxiliary Control register bits (write) */ #define DAQP_AUX_EXT_ANALOG_TRIG … #define DAQP_AUX_PRETRIG … #define DAQP_AUX_TIMER_INT_ENA … #define DAQP_AUX_TIMER_MODE(x) … #define DAQP_AUX_TIMER_MODE_RELOAD … #define DAQP_AUX_TIMER_MODE_PAUSE … #define DAQP_AUX_TIMER_MODE_GO … #define DAQP_AUX_TIMER_MODE_EXT … #define DAQP_AUX_TIMER_CLK_SRC_EXT … #define DAQP_AUX_DA_UPDATE(x) … #define DAQP_AUX_DA_UPDATE_DIRECT … #define DAQP_AUX_DA_UPDATE_OVERFLOW … #define DAQP_AUX_DA_UPDATE_EXTERNAL … #define DAQP_AUX_DA_UPDATE_PACER … /* Auxiliary Status register bits (read) */ #define DAQP_AUX_RUNNING … #define DAQP_AUX_TRIGGERED … #define DAQP_AUX_DA_BUFFER … #define DAQP_AUX_TIMER_OVERFLOW … #define DAQP_AUX_CONVERSION … #define DAQP_AUX_DATA_LOST … #define DAQP_AUX_FIFO_NEARFULL … #define DAQP_AUX_FIFO_EMPTY … #define DAQP_FIFO_SIZE … #define DAQP_MAX_TIMER_SPEED … struct daqp_private { … }; static const struct comedi_lrange range_daqp_ai = …; static int daqp_clear_events(struct comedi_device *dev, int loops) { … } static int daqp_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s) { … } static unsigned int daqp_ai_get_sample(struct comedi_device *dev, struct comedi_subdevice *s) { … } static irqreturn_t daqp_interrupt(int irq, void *dev_id) { … } static void daqp_ai_set_one_scanlist_entry(struct comedi_device *dev, unsigned int chanspec, int start) { … } static int daqp_ai_eos(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned long context) { … } static int daqp_ai_insn_read(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } /* This function converts ns nanoseconds to a counter value suitable * for programming the device. We always use the DAQP's 5 MHz clock, * which with its 24-bit counter, allows values up to 84 seconds. * Also, the function adjusts ns so that it cooresponds to the actual * time that the device will use. */ static int daqp_ns_to_timer(unsigned int *ns, unsigned int flags) { … } static void daqp_set_pacer(struct comedi_device *dev, unsigned int val) { … } static int daqp_ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_cmd *cmd) { … } static int daqp_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) { … } static int daqp_ao_empty(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned long context) { … } static int daqp_ao_insn_write(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static int daqp_di_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static int daqp_do_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static int daqp_auto_attach(struct comedi_device *dev, unsigned long context) { … } static struct comedi_driver driver_daqp = …; static int daqp_cs_suspend(struct pcmcia_device *link) { … } static int daqp_cs_resume(struct pcmcia_device *link) { … } static int daqp_cs_attach(struct pcmcia_device *link) { … } static const struct pcmcia_device_id daqp_cs_id_table[] = …; MODULE_DEVICE_TABLE(pcmcia, daqp_cs_id_table); static struct pcmcia_driver daqp_cs_driver = …; module_comedi_pcmcia_driver(…); MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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