From 146041f1f70d64454d032469574638a036d57f22 Mon Sep 17 00:00:00 2001 From: David Schleef Date: Thu, 12 Feb 2009 15:30:25 -0800 Subject: Staging: comedi: add rti800 driver From: David Schleef for Analog Devices RTI-800/815 devices From: David Schleef Cc: Frank Mori Hess Cc: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/am9513.h | 79 +++++ drivers/staging/comedi/drivers/rti800.c | 456 ++++++++++++++++++++++++++++++++ 2 files changed, 535 insertions(+) create mode 100644 drivers/staging/comedi/drivers/am9513.h create mode 100644 drivers/staging/comedi/drivers/rti800.c --- /dev/null +++ b/drivers/staging/comedi/drivers/am9513.h @@ -0,0 +1,79 @@ +/* + module/am9513.h + value added preprocessor definitions for Am9513 timer chip + + COMEDI - Linux Control and Measurement Device Interface + Copyright (C) 1998 David A. Schleef + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + +*/ + +#ifndef _AM9513_H_ +#define _AM9513_H_ + +#if 0 + +/* + * Before including this file, the following need to be defined: + */ +#define Am9513_8BITBUS xxx +/* or */ +#define Am9513_16BITBUS xxx + +#define Am9513_output_control(a) xxx +#define Am9513_input_status() xxx +#define Am9513_output_data(a) xxx +#define Am9513_input_data() xxx + +#endif + +/* + * + */ + +#ifdef Am9513_8BITBUS + +#define Am9513_write_register(reg,val) \ + do{ \ + Am9513_output_control(reg); \ + Am9513_output_data(val>>8); \ + Am9513_output_data(val&0xff); \ + }while(0) + +#define Am9513_read_register(reg,val) \ + do{ \ + Am9513_output_control(reg); \ + val=Am9513_input_data()<<8; \ + val|=Am9513_input_data(); \ + }while(0) + +#else /* Am9513_16BITBUS */ + +#define Am9513_write_register(reg,val) \ + do{ \ + Am9513_output_control(reg); \ + Am9513_output_data(val); \ + }while(0) + +#define Am9513_read_register(reg,val) \ + do{ \ + Am9513_output_control(reg); \ + val=Am9513_input_data(); \ + }while(0) + +#endif + +#endif --- /dev/null +++ b/drivers/staging/comedi/drivers/rti800.c @@ -0,0 +1,456 @@ +/* + comedi/drivers/rti800.c + Hardware driver for Analog Devices RTI-800/815 board + + COMEDI - Linux Control and Measurement Device Interface + Copyright (C) 1998 David A. Schleef + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + */ +/* +Driver: rti800 +Description: Analog Devices RTI-800/815 +Author: ds +Status: unknown +Updated: Fri, 05 Sep 2008 14:50:44 +0100 +Devices: [Analog Devices] RTI-800 (rti800), RTI-815 (rti815) + +Configuration options: + [0] - I/O port base address + [1] - IRQ + [2] - A/D reference + 0 = differential + 1 = pseudodifferential (common) + 2 = single-ended + [3] - A/D range + 0 = [-10,10] + 1 = [-5,5] + 2 = [0,10] + [4] - A/D encoding + 0 = two's complement + 1 = straight binary + [5] - DAC 0 range + 0 = [-10,10] + 1 = [0,10] + [6] - DAC 0 encoding + 0 = two's complement + 1 = straight binary + [7] - DAC 1 range (same as DAC 0) + [8] - DAC 1 encoding (same as DAC 0) +*/ + +#include "../comedidev.h" + +#include + +#define RTI800_SIZE 16 + +#define RTI800_CSR 0 +#define RTI800_MUXGAIN 1 +#define RTI800_CONVERT 2 +#define RTI800_ADCLO 3 +#define RTI800_ADCHI 4 +#define RTI800_DAC0LO 5 +#define RTI800_DAC0HI 6 +#define RTI800_DAC1LO 7 +#define RTI800_DAC1HI 8 +#define RTI800_CLRFLAGS 9 +#define RTI800_DI 10 +#define RTI800_DO 11 +#define RTI800_9513A_DATA 12 +#define RTI800_9513A_CNTRL 13 +#define RTI800_9513A_STATUS 13 + +/* + * flags for CSR register + */ + +#define RTI800_BUSY 0x80 +#define RTI800_DONE 0x40 +#define RTI800_OVERRUN 0x20 +#define RTI800_TCR 0x10 +#define RTI800_DMA_ENAB 0x08 +#define RTI800_INTR_TC 0x04 +#define RTI800_INTR_EC 0x02 +#define RTI800_INTR_OVRN 0x01 + +#define Am9513_8BITBUS + +#define Am9513_output_control(a) outb(a,dev->iobase+RTI800_9513A_CNTRL) +#define Am9513_output_data(a) outb(a,dev->iobase+RTI800_9513A_DATA) +#define Am9513_input_data() inb(dev->iobase+RTI800_9513A_DATA) +#define Am9513_input_status() inb(dev->iobase+RTI800_9513A_STATUS) + +#include "am9513.h" + +static const comedi_lrange range_rti800_ai_10_bipolar = { 4, { + BIP_RANGE(10), + BIP_RANGE(1), + BIP_RANGE(0.1), + BIP_RANGE(0.02) + } +}; +static const comedi_lrange range_rti800_ai_5_bipolar = { 4, { + BIP_RANGE(5), + BIP_RANGE(0.5), + BIP_RANGE(0.05), + BIP_RANGE(0.01) + } +}; +static const comedi_lrange range_rti800_ai_unipolar = { 4, { + UNI_RANGE(10), + UNI_RANGE(1), + UNI_RANGE(0.1), + UNI_RANGE(0.02) + } +}; + +typedef struct { + const char *name; + int has_ao; +} boardtype; +static const boardtype boardtypes[] = { + {"rti800", 0}, + {"rti815", 1}, +}; + +#define this_board ((const boardtype *)dev->board_ptr) + +static int rti800_attach(comedi_device * dev, comedi_devconfig * it); +static int rti800_detach(comedi_device * dev); +static comedi_driver driver_rti800 = { + driver_name:"rti800", + module:THIS_MODULE, + attach:rti800_attach, + detach:rti800_detach, + num_names:sizeof(boardtypes) / sizeof(boardtype), + board_name:&boardtypes[0].name, + offset:sizeof(boardtype), +}; + +COMEDI_INITCLEANUP(driver_rti800); + +static irqreturn_t rti800_interrupt(int irq, void *dev PT_REGS_ARG); + +typedef struct { + enum { + adc_diff, adc_pseudodiff, adc_singleended + } adc_mux; + enum { + adc_bipolar10, adc_bipolar5, adc_unipolar10 + } adc_range; + enum { + adc_2comp, adc_straight + } adc_coding; + enum { + dac_bipolar10, dac_unipolar10 + } dac0_range, dac1_range; + enum { + dac_2comp, dac_straight + } dac0_coding, dac1_coding; + const comedi_lrange *ao_range_type_list[2]; + lsampl_t ao_readback[2]; + int muxgain_bits; +} rti800_private; + +#define devpriv ((rti800_private *)dev->private) + +#define RTI800_TIMEOUT 100 + +static irqreturn_t rti800_interrupt(int irq, void *dev PT_REGS_ARG) +{ + return IRQ_HANDLED; +} + +// settling delay times in usec for different gains +static const int gaindelay[] = { 10, 20, 40, 80 }; + +static int rti800_ai_insn_read(comedi_device * dev, comedi_subdevice * s, + comedi_insn * insn, lsampl_t * data) +{ + int i, t; + int status; + int chan = CR_CHAN(insn->chanspec); + unsigned gain = CR_RANGE(insn->chanspec); + unsigned muxgain_bits; + + inb(dev->iobase + RTI800_ADCHI); + outb(0, dev->iobase + RTI800_CLRFLAGS); + + muxgain_bits = chan | (gain << 5); + if (muxgain_bits != devpriv->muxgain_bits) { + devpriv->muxgain_bits = muxgain_bits; + outb(devpriv->muxgain_bits, dev->iobase + RTI800_MUXGAIN); + /* without a delay here, the RTI_OVERRUN bit + * gets set, and you will have an error. */ + if (insn->n > 0) { + BUG_ON(gain >= + sizeof(gaindelay) / sizeof(gaindelay[0])); + comedi_udelay(gaindelay[gain]); + } + } + + for (i = 0; i < insn->n; i++) { + outb(0, dev->iobase + RTI800_CONVERT); + for (t = RTI800_TIMEOUT; t; t--) { + status = inb(dev->iobase + RTI800_CSR); + if (status & RTI800_OVERRUN) { + rt_printk("rti800: a/d overrun\n"); + outb(0, dev->iobase + RTI800_CLRFLAGS); + return -EIO; + } + if (status & RTI800_DONE) + break; + comedi_udelay(1); + } + if (t == 0) { + rt_printk("rti800: timeout\n"); + return -ETIME; + } + data[i] = inb(dev->iobase + RTI800_ADCLO); + data[i] |= (0xf & inb(dev->iobase + RTI800_ADCHI)) << 8; + + if (devpriv->adc_coding == adc_2comp) { + data[i] ^= 0x800; + } + } + + return i; +} + +static int rti800_ao_insn_read(comedi_device * dev, comedi_subdevice * s, + comedi_insn * insn, lsampl_t * data) +{ + int i; + int chan = CR_CHAN(insn->chanspec); + + for (i = 0; i < insn->n; i++) + data[i] = devpriv->ao_readback[chan]; + + return i; +} + +static int rti800_ao_insn_write(comedi_device * dev, comedi_subdevice * s, + comedi_insn * insn, lsampl_t * data) +{ + int chan = CR_CHAN(insn->chanspec); + int d; + int i; + + for (i = 0; i < insn->n; i++) { + devpriv->ao_readback[chan] = d = data[i]; + if (devpriv->dac0_coding == dac_2comp) { + d ^= 0x800; + } + outb(d & 0xff, + dev->iobase + (chan ? RTI800_DAC1LO : RTI800_DAC0LO)); + outb(d >> 8, + dev->iobase + (chan ? RTI800_DAC1HI : RTI800_DAC0HI)); + } + return i; +} + +static int rti800_di_insn_bits(comedi_device * dev, comedi_subdevice * s, + comedi_insn * insn, lsampl_t * data) +{ + if (insn->n != 2) + return -EINVAL; + data[1] = inb(dev->iobase + RTI800_DI); + return 2; +} + +static int rti800_do_insn_bits(comedi_device * dev, comedi_subdevice * s, + comedi_insn * insn, lsampl_t * data) +{ + if (insn->n != 2) + return -EINVAL; + + if (data[0]) { + s->state &= ~data[0]; + s->state |= data[0] & data[1]; + /* Outputs are inverted... */ + outb(s->state ^ 0xff, dev->iobase + RTI800_DO); + } + + data[1] = s->state; + + return 2; +} + +/* + options[0] - I/O port + options[1] - irq + options[2] - a/d mux + 0=differential, 1=pseudodiff, 2=single + options[3] - a/d range + 0=bipolar10, 1=bipolar5, 2=unipolar10 + options[4] - a/d coding + 0=2's comp, 1=straight binary + options[5] - dac0 range + 0=bipolar10, 1=unipolar10 + options[6] - dac0 coding + 0=2's comp, 1=straight binary + options[7] - dac1 range + options[8] - dac1 coding + */ + +static int rti800_attach(comedi_device * dev, comedi_devconfig * it) +{ + unsigned int irq; + unsigned long iobase; + int ret; + comedi_subdevice *s; + + iobase = it->options[0]; + printk("comedi%d: rti800: 0x%04lx ", dev->minor, iobase); + if (!request_region(iobase, RTI800_SIZE, "rti800")) { + printk("I/O port conflict\n"); + return -EIO; + } + dev->iobase = iobase; + +#ifdef DEBUG + printk("fingerprint=%x,%x,%x,%x,%x ", + inb(dev->iobase + 0), + inb(dev->iobase + 1), + inb(dev->iobase + 2), + inb(dev->iobase + 3), inb(dev->iobase + 4)); +#endif + + outb(0, dev->iobase + RTI800_CSR); + inb(dev->iobase + RTI800_ADCHI); + outb(0, dev->iobase + RTI800_CLRFLAGS); + + irq = it->options[1]; + if (irq) { + printk("( irq = %u )", irq); + if ((ret = comedi_request_irq(irq, rti800_interrupt, 0, + "rti800", dev)) < 0) { + printk(" Failed to allocate IRQ\n"); + return ret; + } + dev->irq = irq; + } else { + printk("( no irq )"); + } + + dev->board_name = this_board->name; + + if ((ret = alloc_subdevices(dev, 4)) < 0) + return ret; + if ((ret = alloc_private(dev, sizeof(rti800_private))) < 0) + return ret; + + devpriv->adc_mux = it->options[2]; + devpriv->adc_range = it->options[3]; + devpriv->adc_coding = it->options[4]; + devpriv->dac0_range = it->options[5]; + devpriv->dac0_coding = it->options[6]; + devpriv->dac1_range = it->options[7]; + devpriv->dac1_coding = it->options[8]; + devpriv->muxgain_bits = -1; + + s = dev->subdevices + 0; + /* ai subdevice */ + s->type = COMEDI_SUBD_AI; + s->subdev_flags = SDF_READABLE | SDF_GROUND; + s->n_chan = (devpriv->adc_mux ? 16 : 8); + s->insn_read = rti800_ai_insn_read; + s->maxdata = 0xfff; + switch (devpriv->adc_range) { + case adc_bipolar10: + s->range_table = &range_rti800_ai_10_bipolar; + break; + case adc_bipolar5: + s->range_table = &range_rti800_ai_5_bipolar; + 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; +}