// SPDX-License-Identifier: GPL-2.0 /* * comedi/drivers/dt2801.c * Device Driver for DataTranslation DT2801 * */ /* * Driver: dt2801 * Description: Data Translation DT2801 series and DT01-EZ * Author: ds * Status: works * Devices: [Data Translation] DT2801 (dt2801), DT2801-A, DT2801/5716A, * DT2805, DT2805/5716A, DT2808, DT2818, DT2809, DT01-EZ * * This driver can autoprobe the type of board. * * Configuration options: * [0] - I/O port base address * [1] - unused * [2] - A/D reference 0=differential, 1=single-ended * [3] - A/D range * 0 = [-10, 10] * 1 = [0,10] * [4] - D/A 0 range * 0 = [-10, 10] * 1 = [-5,5] * 2 = [-2.5,2.5] * 3 = [0,10] * 4 = [0,5] * [5] - D/A 1 range (same choices) */ #include <linux/module.h> #include <linux/comedi/comedidev.h> #include <linux/delay.h> #define DT2801_TIMEOUT … /* Hardware Configuration */ /* ====================== */ #define DT2801_MAX_DMA_SIZE … /* define's */ /* ====================== */ /* Commands */ #define DT_C_RESET … #define DT_C_CLEAR_ERR … #define DT_C_READ_ERRREG … #define DT_C_SET_CLOCK … #define DT_C_TEST … #define DT_C_STOP … #define DT_C_SET_DIGIN … #define DT_C_SET_DIGOUT … #define DT_C_READ_DIG … #define DT_C_WRITE_DIG … #define DT_C_WRITE_DAIM … #define DT_C_SET_DA … #define DT_C_WRITE_DA … #define DT_C_READ_ADIM … #define DT_C_SET_AD … #define DT_C_READ_AD … /* * Command modifiers (only used with read/write), EXTTRIG can be * used with some other commands. */ #define DT_MOD_DMA … #define DT_MOD_CONT … #define DT_MOD_EXTCLK … #define DT_MOD_EXTTRIG … /* Bits in status register */ #define DT_S_DATA_OUT_READY … #define DT_S_DATA_IN_FULL … #define DT_S_READY … #define DT_S_COMMAND … #define DT_S_COMPOSITE_ERROR … /* registers */ #define DT2801_DATA … #define DT2801_STATUS … #define DT2801_CMD … #if 0 /* ignore 'defined but not used' warning */ static const struct comedi_lrange range_dt2801_ai_pgh_bipolar = { 4, { BIP_RANGE(10), BIP_RANGE(5), BIP_RANGE(2.5), BIP_RANGE(1.25) } }; #endif static const struct comedi_lrange range_dt2801_ai_pgl_bipolar = …; #if 0 /* ignore 'defined but not used' warning */ static const struct comedi_lrange range_dt2801_ai_pgh_unipolar = { 4, { UNI_RANGE(10), UNI_RANGE(5), UNI_RANGE(2.5), UNI_RANGE(1.25) } }; #endif static const struct comedi_lrange range_dt2801_ai_pgl_unipolar = …; struct dt2801_board { … }; /* * Typeid's for the different boards of the DT2801-series * (taken from the test-software, that comes with the board) */ static const struct dt2801_board boardtypes[] = …; struct dt2801_private { … }; /* * These are the low-level routines: * writecommand: write a command to the board * writedata: write data byte * readdata: read data byte */ /* * Only checks DataOutReady-flag, not the Ready-flag as it is done * in the examples of the manual. I don't see why this should be * necessary. */ static int dt2801_readdata(struct comedi_device *dev, int *data) { … } static int dt2801_readdata2(struct comedi_device *dev, int *data) { … } static int dt2801_writedata(struct comedi_device *dev, unsigned int data) { … } static int dt2801_writedata2(struct comedi_device *dev, unsigned int data) { … } static int dt2801_wait_for_ready(struct comedi_device *dev) { … } static void dt2801_writecmd(struct comedi_device *dev, int command) { … } static int dt2801_reset(struct comedi_device *dev) { … } static int probe_number_of_ai_chans(struct comedi_device *dev) { … } static const struct comedi_lrange *dac_range_table[] = …; static const struct comedi_lrange *dac_range_lkup(int opt) { … } static const struct comedi_lrange *ai_range_lkup(int type, int opt) { … } static int dt2801_error(struct comedi_device *dev, int stat) { … } static int dt2801_ai_insn_read(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static int dt2801_ao_insn_write(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static int dt2801_dio_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static int dt2801_dio_insn_config(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } /* * options: * [0] - i/o base * [1] - unused * [2] - a/d 0=differential, 1=single-ended * [3] - a/d range 0=[-10,10], 1=[0,10] * [4] - dac0 range 0=[-10,10], 1=[-5,5], 2=[-2.5,2.5] 3=[0,10], 4=[0,5] * [5] - dac1 range 0=[-10,10], 1=[-5,5], 2=[-2.5,2.5] 3=[0,10], 4=[0,5] */ static int dt2801_attach(struct comedi_device *dev, struct comedi_devconfig *it) { … } static struct comedi_driver dt2801_driver = …; module_comedi_driver(…); MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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