4 Header for ni_labpc.c and ni_labpc_cs.c
6 Copyright (C) 2003 Frank Mori Hess <fmhess@users.sourceforge.net>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
22 #define EEPROM_SIZE 256 /* 256 byte eeprom */
23 #define NUM_AO_CHAN 2 /* boards have two analog output channels */
25 enum transfer_type { fifo_not_empty_transfer, fifo_half_full_transfer,
29 struct labpc_boardinfo {
31 int ai_speed; /* maximum input speed in ns */
32 unsigned ai_scan_up:1; /* can auto scan up in ai channels */
33 unsigned has_ao:1; /* has analog outputs */
34 unsigned is_labpc1200:1; /* has extra regs compared to pc+ */
37 struct labpc_private {
38 /* number of data points left to be taken */
39 unsigned long long count;
40 /* software copy of analog output values */
41 unsigned int ao_value[NUM_AO_CHAN];
42 /* software copys of bits written to command registers */
49 /* store last read of board status registers */
53 * value to load into board's counter a0 (conversion pacing) for timed
56 unsigned int divisor_a0;
58 * value to load into board's counter b0 (master) for timed conversions
60 unsigned int divisor_b0;
62 * value to load into board's counter b1 (scan pacing) for timed
65 unsigned int divisor_b1;
66 unsigned int dma_chan; /* dma channel to use */
67 u16 *dma_buffer; /* buffer ai will dma into */
69 /* transfer size in bytes for current transfer */
70 unsigned int dma_transfer_size;
71 /* we are using dma/fifo-half-full/etc. */
72 enum transfer_type current_transfer;
73 /* stores contents of board's eeprom */
74 unsigned int eeprom_data[EEPROM_SIZE];
75 /* stores settings of calibration dacs */
76 unsigned int caldac[16];
78 * function pointers so we can use inb/outb or readb/writeb as
81 unsigned int (*read_byte)(struct comedi_device *, unsigned long reg);
82 void (*write_byte)(struct comedi_device *,
83 unsigned int byte, unsigned long reg);
86 int labpc_common_attach(struct comedi_device *dev,
87 unsigned int irq, unsigned long isr_flags);
89 #endif /* _NI_LABPC_H */