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Staging: comedi: add rti800 driver
for Analog Devices RTI-800/815 devices From: David Schleef <ds@schleef.org> Cc: Frank Mori Hess <fmhess@users.sourceforge.net> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David Schleef
Greg Kroah-Hartman
parent
8b93f9034e
commit
fc59905e44
79
drivers/staging/comedi/drivers/am9513.h
Normal file
79
drivers/staging/comedi/drivers/am9513.h
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@ -0,0 +1,79 @@
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/*
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module/am9513.h
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value added preprocessor definitions for Am9513 timer chip
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COMEDI - Linux Control and Measurement Device Interface
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Copyright (C) 1998 David A. Schleef <ds@schleef.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _AM9513_H_
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#define _AM9513_H_
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#if 0
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/*
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* Before including this file, the following need to be defined:
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*/
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#define Am9513_8BITBUS xxx
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/* or */
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#define Am9513_16BITBUS xxx
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#define Am9513_output_control(a) xxx
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#define Am9513_input_status() xxx
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#define Am9513_output_data(a) xxx
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#define Am9513_input_data() xxx
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#endif
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/*
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*
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*/
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#ifdef Am9513_8BITBUS
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#define Am9513_write_register(reg,val) \
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do{ \
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Am9513_output_control(reg); \
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Am9513_output_data(val>>8); \
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Am9513_output_data(val&0xff); \
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}while(0)
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#define Am9513_read_register(reg,val) \
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do{ \
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Am9513_output_control(reg); \
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val=Am9513_input_data()<<8; \
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val|=Am9513_input_data(); \
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}while(0)
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#else /* Am9513_16BITBUS */
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#define Am9513_write_register(reg,val) \
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do{ \
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Am9513_output_control(reg); \
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Am9513_output_data(val); \
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}while(0)
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#define Am9513_read_register(reg,val) \
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do{ \
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Am9513_output_control(reg); \
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val=Am9513_input_data(); \
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}while(0)
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#endif
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#endif
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456
drivers/staging/comedi/drivers/rti800.c
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456
drivers/staging/comedi/drivers/rti800.c
Normal file
@ -0,0 +1,456 @@
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/*
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comedi/drivers/rti800.c
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Hardware driver for Analog Devices RTI-800/815 board
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COMEDI - Linux Control and Measurement Device Interface
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Copyright (C) 1998 David A. Schleef <ds@schleef.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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Driver: rti800
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Description: Analog Devices RTI-800/815
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Author: ds
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Status: unknown
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Updated: Fri, 05 Sep 2008 14:50:44 +0100
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Devices: [Analog Devices] RTI-800 (rti800), RTI-815 (rti815)
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Configuration options:
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[0] - I/O port base address
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[1] - IRQ
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[2] - A/D reference
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0 = differential
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1 = pseudodifferential (common)
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2 = single-ended
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[3] - A/D range
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0 = [-10,10]
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1 = [-5,5]
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2 = [0,10]
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[4] - A/D encoding
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0 = two's complement
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1 = straight binary
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[5] - DAC 0 range
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0 = [-10,10]
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1 = [0,10]
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[6] - DAC 0 encoding
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0 = two's complement
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1 = straight binary
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[7] - DAC 1 range (same as DAC 0)
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[8] - DAC 1 encoding (same as DAC 0)
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*/
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#include "../comedidev.h"
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#include <linux/ioport.h>
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#define RTI800_SIZE 16
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#define RTI800_CSR 0
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#define RTI800_MUXGAIN 1
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#define RTI800_CONVERT 2
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#define RTI800_ADCLO 3
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#define RTI800_ADCHI 4
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#define RTI800_DAC0LO 5
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#define RTI800_DAC0HI 6
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#define RTI800_DAC1LO 7
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#define RTI800_DAC1HI 8
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#define RTI800_CLRFLAGS 9
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#define RTI800_DI 10
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#define RTI800_DO 11
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#define RTI800_9513A_DATA 12
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#define RTI800_9513A_CNTRL 13
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#define RTI800_9513A_STATUS 13
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/*
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* flags for CSR register
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*/
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#define RTI800_BUSY 0x80
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#define RTI800_DONE 0x40
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#define RTI800_OVERRUN 0x20
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#define RTI800_TCR 0x10
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#define RTI800_DMA_ENAB 0x08
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#define RTI800_INTR_TC 0x04
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#define RTI800_INTR_EC 0x02
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#define RTI800_INTR_OVRN 0x01
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#define Am9513_8BITBUS
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#define Am9513_output_control(a) outb(a,dev->iobase+RTI800_9513A_CNTRL)
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#define Am9513_output_data(a) outb(a,dev->iobase+RTI800_9513A_DATA)
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#define Am9513_input_data() inb(dev->iobase+RTI800_9513A_DATA)
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#define Am9513_input_status() inb(dev->iobase+RTI800_9513A_STATUS)
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#include "am9513.h"
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static const comedi_lrange range_rti800_ai_10_bipolar = { 4, {
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BIP_RANGE(10),
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BIP_RANGE(1),
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BIP_RANGE(0.1),
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BIP_RANGE(0.02)
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}
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};
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static const comedi_lrange range_rti800_ai_5_bipolar = { 4, {
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BIP_RANGE(5),
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BIP_RANGE(0.5),
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BIP_RANGE(0.05),
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BIP_RANGE(0.01)
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}
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};
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static const comedi_lrange range_rti800_ai_unipolar = { 4, {
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UNI_RANGE(10),
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UNI_RANGE(1),
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UNI_RANGE(0.1),
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UNI_RANGE(0.02)
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}
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};
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typedef struct {
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const char *name;
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int has_ao;
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} boardtype;
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static const boardtype boardtypes[] = {
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{"rti800", 0},
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{"rti815", 1},
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};
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#define this_board ((const boardtype *)dev->board_ptr)
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static int rti800_attach(comedi_device * dev, comedi_devconfig * it);
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static int rti800_detach(comedi_device * dev);
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static comedi_driver driver_rti800 = {
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driver_name:"rti800",
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module:THIS_MODULE,
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attach:rti800_attach,
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detach:rti800_detach,
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num_names:sizeof(boardtypes) / sizeof(boardtype),
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board_name:&boardtypes[0].name,
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offset:sizeof(boardtype),
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};
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COMEDI_INITCLEANUP(driver_rti800);
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static irqreturn_t rti800_interrupt(int irq, void *dev PT_REGS_ARG);
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typedef struct {
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enum {
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adc_diff, adc_pseudodiff, adc_singleended
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} adc_mux;
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enum {
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adc_bipolar10, adc_bipolar5, adc_unipolar10
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} adc_range;
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enum {
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adc_2comp, adc_straight
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} adc_coding;
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enum {
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dac_bipolar10, dac_unipolar10
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} dac0_range, dac1_range;
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enum {
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dac_2comp, dac_straight
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} dac0_coding, dac1_coding;
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const comedi_lrange *ao_range_type_list[2];
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lsampl_t ao_readback[2];
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int muxgain_bits;
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} rti800_private;
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#define devpriv ((rti800_private *)dev->private)
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#define RTI800_TIMEOUT 100
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static irqreturn_t rti800_interrupt(int irq, void *dev PT_REGS_ARG)
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{
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return IRQ_HANDLED;
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}
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// settling delay times in usec for different gains
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static const int gaindelay[] = { 10, 20, 40, 80 };
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static int rti800_ai_insn_read(comedi_device * dev, comedi_subdevice * s,
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comedi_insn * insn, lsampl_t * data)
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{
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int i, t;
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int status;
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int chan = CR_CHAN(insn->chanspec);
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unsigned gain = CR_RANGE(insn->chanspec);
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unsigned muxgain_bits;
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inb(dev->iobase + RTI800_ADCHI);
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outb(0, dev->iobase + RTI800_CLRFLAGS);
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muxgain_bits = chan | (gain << 5);
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if (muxgain_bits != devpriv->muxgain_bits) {
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devpriv->muxgain_bits = muxgain_bits;
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outb(devpriv->muxgain_bits, dev->iobase + RTI800_MUXGAIN);
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/* without a delay here, the RTI_OVERRUN bit
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* gets set, and you will have an error. */
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if (insn->n > 0) {
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BUG_ON(gain >=
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sizeof(gaindelay) / sizeof(gaindelay[0]));
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comedi_udelay(gaindelay[gain]);
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}
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}
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for (i = 0; i < insn->n; i++) {
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outb(0, dev->iobase + RTI800_CONVERT);
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for (t = RTI800_TIMEOUT; t; t--) {
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status = inb(dev->iobase + RTI800_CSR);
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if (status & RTI800_OVERRUN) {
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rt_printk("rti800: a/d overrun\n");
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outb(0, dev->iobase + RTI800_CLRFLAGS);
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return -EIO;
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}
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if (status & RTI800_DONE)
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break;
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comedi_udelay(1);
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}
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if (t == 0) {
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rt_printk("rti800: timeout\n");
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return -ETIME;
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}
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data[i] = inb(dev->iobase + RTI800_ADCLO);
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data[i] |= (0xf & inb(dev->iobase + RTI800_ADCHI)) << 8;
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if (devpriv->adc_coding == adc_2comp) {
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data[i] ^= 0x800;
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}
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}
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return i;
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}
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static int rti800_ao_insn_read(comedi_device * dev, comedi_subdevice * s,
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comedi_insn * insn, lsampl_t * data)
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{
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int i;
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int chan = CR_CHAN(insn->chanspec);
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for (i = 0; i < insn->n; i++)
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data[i] = devpriv->ao_readback[chan];
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return i;
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}
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static int rti800_ao_insn_write(comedi_device * dev, comedi_subdevice * s,
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comedi_insn * insn, lsampl_t * data)
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{
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int chan = CR_CHAN(insn->chanspec);
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int d;
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int i;
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for (i = 0; i < insn->n; i++) {
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devpriv->ao_readback[chan] = d = data[i];
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if (devpriv->dac0_coding == dac_2comp) {
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d ^= 0x800;
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}
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outb(d & 0xff,
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dev->iobase + (chan ? RTI800_DAC1LO : RTI800_DAC0LO));
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outb(d >> 8,
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dev->iobase + (chan ? RTI800_DAC1HI : RTI800_DAC0HI));
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}
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return i;
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}
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static int rti800_di_insn_bits(comedi_device * dev, comedi_subdevice * s,
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comedi_insn * insn, lsampl_t * data)
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{
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if (insn->n != 2)
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return -EINVAL;
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data[1] = inb(dev->iobase + RTI800_DI);
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return 2;
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}
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static int rti800_do_insn_bits(comedi_device * dev, comedi_subdevice * s,
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comedi_insn * insn, lsampl_t * data)
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{
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if (insn->n != 2)
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return -EINVAL;
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if (data[0]) {
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s->state &= ~data[0];
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s->state |= data[0] & data[1];
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/* Outputs are inverted... */
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outb(s->state ^ 0xff, dev->iobase + RTI800_DO);
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}
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data[1] = s->state;
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return 2;
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}
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/*
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options[0] - I/O port
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options[1] - irq
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options[2] - a/d mux
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0=differential, 1=pseudodiff, 2=single
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options[3] - a/d range
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0=bipolar10, 1=bipolar5, 2=unipolar10
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options[4] - a/d coding
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0=2's comp, 1=straight binary
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options[5] - dac0 range
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0=bipolar10, 1=unipolar10
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options[6] - dac0 coding
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0=2's comp, 1=straight binary
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options[7] - dac1 range
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options[8] - dac1 coding
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*/
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static int rti800_attach(comedi_device * dev, comedi_devconfig * it)
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{
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unsigned int irq;
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unsigned long iobase;
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int ret;
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comedi_subdevice *s;
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iobase = it->options[0];
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printk("comedi%d: rti800: 0x%04lx ", dev->minor, iobase);
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if (!request_region(iobase, RTI800_SIZE, "rti800")) {
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printk("I/O port conflict\n");
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return -EIO;
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}
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dev->iobase = iobase;
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#ifdef DEBUG
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printk("fingerprint=%x,%x,%x,%x,%x ",
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inb(dev->iobase + 0),
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inb(dev->iobase + 1),
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inb(dev->iobase + 2),
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inb(dev->iobase + 3), inb(dev->iobase + 4));
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#endif
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outb(0, dev->iobase + RTI800_CSR);
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inb(dev->iobase + RTI800_ADCHI);
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outb(0, dev->iobase + RTI800_CLRFLAGS);
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irq = it->options[1];
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if (irq) {
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printk("( irq = %u )", irq);
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if ((ret = comedi_request_irq(irq, rti800_interrupt, 0,
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"rti800", dev)) < 0) {
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printk(" Failed to allocate IRQ\n");
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return ret;
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}
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dev->irq = irq;
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} else {
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printk("( no irq )");
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}
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dev->board_name = this_board->name;
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if ((ret = alloc_subdevices(dev, 4)) < 0)
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return ret;
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if ((ret = alloc_private(dev, sizeof(rti800_private))) < 0)
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return ret;
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devpriv->adc_mux = it->options[2];
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devpriv->adc_range = it->options[3];
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devpriv->adc_coding = it->options[4];
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devpriv->dac0_range = it->options[5];
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devpriv->dac0_coding = it->options[6];
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devpriv->dac1_range = it->options[7];
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devpriv->dac1_coding = it->options[8];
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devpriv->muxgain_bits = -1;
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s = dev->subdevices + 0;
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/* ai subdevice */
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s->type = COMEDI_SUBD_AI;
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s->subdev_flags = SDF_READABLE | SDF_GROUND;
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s->n_chan = (devpriv->adc_mux ? 16 : 8);
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s->insn_read = rti800_ai_insn_read;
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s->maxdata = 0xfff;
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switch (devpriv->adc_range) {
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case adc_bipolar10:
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s->range_table = &range_rti800_ai_10_bipolar;
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break;
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case adc_bipolar5:
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s->range_table = &range_rti800_ai_5_bipolar;
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break;
|
||||
case adc_unipolar10:
|
||||
s->range_table = &range_rti800_ai_unipolar;
|
||||
break;
|
||||
}
|
||||
|
||||
s++;
|
||||
if (this_board->has_ao) {
|
||||
/* ao subdevice (only on rti815) */
|
||||
s->type = COMEDI_SUBD_AO;
|
||||
s->subdev_flags = SDF_WRITABLE;
|
||||
s->n_chan = 2;
|
||||
s->insn_read = rti800_ao_insn_read;
|
||||
s->insn_write = rti800_ao_insn_write;
|
||||
s->maxdata = 0xfff;
|
||||
s->range_table_list = devpriv->ao_range_type_list;
|
||||
switch (devpriv->dac0_range) {
|
||||
case dac_bipolar10:
|
||||
devpriv->ao_range_type_list[0] = &range_bipolar10;
|
||||
break;
|
||||
case dac_unipolar10:
|
||||
devpriv->ao_range_type_list[0] = &range_unipolar10;
|
||||
break;
|
||||
}
|
||||
switch (devpriv->dac1_range) {
|
||||
case dac_bipolar10:
|
||||
devpriv->ao_range_type_list[1] = &range_bipolar10;
|
||||
break;
|
||||
case dac_unipolar10:
|
||||
devpriv->ao_range_type_list[1] = &range_unipolar10;
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
s->type = COMEDI_SUBD_UNUSED;
|
||||
}
|
||||
|
||||
s++;
|
||||
/* di */
|
||||
s->type = COMEDI_SUBD_DI;
|
||||
s->subdev_flags = SDF_READABLE;
|
||||
s->n_chan = 8;
|
||||
s->insn_bits = rti800_di_insn_bits;
|
||||
s->maxdata = 1;
|
||||
s->range_table = &range_digital;
|
||||
|
||||
s++;
|
||||
/* do */
|
||||
s->type = COMEDI_SUBD_DO;
|
||||
s->subdev_flags = SDF_WRITABLE;
|
||||
s->n_chan = 8;
|
||||
s->insn_bits = rti800_do_insn_bits;
|
||||
s->maxdata = 1;
|
||||
s->range_table = &range_digital;
|
||||
|
||||
/* don't yet know how to deal with counter/timers */
|
||||
#if 0
|
||||
s++;
|
||||
/* do */
|
||||
s->type = COMEDI_SUBD_TIMER;
|
||||
#endif
|
||||
|
||||
printk("\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int rti800_detach(comedi_device * dev)
|
||||
{
|
||||
printk("comedi%d: rti800: remove\n", dev->minor);
|
||||
|
||||
if (dev->iobase)
|
||||
release_region(dev->iobase, RTI800_SIZE);
|
||||
|
||||
if (dev->irq)
|
||||
comedi_free_irq(dev->irq, dev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user