diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/cb_das16_cs.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/cb_das16_cs.c | 284 |
1 files changed, 197 insertions, 87 deletions
diff --git a/drivers/staging/comedi/drivers/cb_das16_cs.c b/drivers/staging/comedi/drivers/cb_das16_cs.c index ae84f2c0cc9c..78d098f9e1f2 100644 --- a/drivers/staging/comedi/drivers/cb_das16_cs.c +++ b/drivers/staging/comedi/drivers/cb_das16_cs.c @@ -1,36 +1,37 @@ /* - comedi/drivers/das16cs.c - Driver for Computer Boards PC-CARD DAS16/16. + * cb_das16_cs.c + * Driver for Computer Boards PC-CARD DAS16/16. + * + * COMEDI - Linux Control and Measurement Device Interface + * Copyright (C) 2000, 2001, 2002 David A. Schleef <ds@schleef.org> + * + * 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. + * + * PCMCIA support code for this driver is adapted from the dummy_cs.c + * driver of the Linux PCMCIA Card Services package. + * + * The initial developer of the original code is David A. Hinds + * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds + * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. + */ - COMEDI - Linux Control and Measurement Device Interface - Copyright (C) 2000, 2001, 2002 David A. Schleef <ds@schleef.org> - - 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. - - PCMCIA support code for this driver is adapted from the dummy_cs.c - driver of the Linux PCMCIA Card Services package. - - The initial developer of the original code is David A. Hinds - <dahinds@users.sourceforge.net>. Portions created by David A. Hinds - are Copyright (C) 1999 David A. Hinds. All Rights Reserved. - -*/ /* -Driver: cb_das16_cs -Description: Computer Boards PC-CARD DAS16/16 -Devices: [ComputerBoards] PC-CARD DAS16/16 (cb_das16_cs), PC-CARD DAS16/16-AO -Author: ds -Updated: Mon, 04 Nov 2002 20:04:21 -0800 -Status: experimental -*/ + * Driver: cb_das16_cs + * Description: Computer Boards PC-CARD DAS16/16 + * Devices: [ComputerBoards] PC-CARD DAS16/16 (cb_das16_cs), + * PC-CARD DAS16/16-AO + * Author: ds + * Updated: Mon, 04 Nov 2002 20:04:21 -0800 + * Status: experimental + */ #include <linux/module.h> #include <linux/interrupt.h> @@ -40,38 +41,86 @@ Status: experimental #include "comedi_8254.h" -#define DAS16CS_ADC_DATA 0 -#define DAS16CS_DIO_MUX 2 -#define DAS16CS_MISC1 4 -#define DAS16CS_MISC2 6 -#define DAS16CS_TIMER_BASE 8 -#define DAS16CS_DIO 16 +/* + * Register I/O map + */ +#define DAS16CS_AI_DATA_REG 0x00 +#define DAS16CS_AI_MUX_REG 0x02 +#define DAS16CS_AI_MUX_HI_CHAN(x) (((x) & 0xf) << 4) +#define DAS16CS_AI_MUX_LO_CHAN(x) (((x) & 0xf) << 0) +#define DAS16CS_AI_MUX_SINGLE_CHAN(x) (DAS16CS_AI_MUX_HI_CHAN(x) | \ + DAS16CS_AI_MUX_LO_CHAN(x)) +#define DAS16CS_MISC1_REG 0x04 +#define DAS16CS_MISC1_INTE BIT(15) /* 1=enable; 0=disable */ +#define DAS16CS_MISC1_INT_SRC(x) (((x) & 0x7) << 12) /* interrupt src */ +#define DAS16CS_MISC1_INT_SRC_NONE DAS16CS_MISC1_INT_SRC(0) +#define DAS16CS_MISC1_INT_SRC_PACER DAS16CS_MISC1_INT_SRC(1) +#define DAS16CS_MISC1_INT_SRC_EXT DAS16CS_MISC1_INT_SRC(2) +#define DAS16CS_MISC1_INT_SRC_FNE DAS16CS_MISC1_INT_SRC(3) +#define DAS16CS_MISC1_INT_SRC_FHF DAS16CS_MISC1_INT_SRC(4) +#define DAS16CS_MISC1_INT_SRC_EOS DAS16CS_MISC1_INT_SRC(5) +#define DAS16CS_MISC1_INT_SRC_MASK DAS16CS_MISC1_INT_SRC(7) +#define DAS16CS_MISC1_OVR BIT(10) /* ro - 1=FIFO overflow */ +#define DAS16CS_MISC1_AI_CONV(x) (((x) & 0x3) << 8) /* AI convert src */ +#define DAS16CS_MISC1_AI_CONV_SW DAS16CS_MISC1_AI_CONV(0) +#define DAS16CS_MISC1_AI_CONV_EXT_NEG DAS16CS_MISC1_AI_CONV(1) +#define DAS16CS_MISC1_AI_CONV_EXT_POS DAS16CS_MISC1_AI_CONV(2) +#define DAS16CS_MISC1_AI_CONV_PACER DAS16CS_MISC1_AI_CONV(3) +#define DAS16CS_MISC1_AI_CONV_MASK DAS16CS_MISC1_AI_CONV(3) +#define DAS16CS_MISC1_EOC BIT(7) /* ro - 0=busy; 1=ready */ +#define DAS16CS_MISC1_SEDIFF BIT(5) /* 0=diff; 1=se */ +#define DAS16CS_MISC1_INTB BIT(4) /* ro - 0=latched; 1=cleared */ +#define DAS16CS_MISC1_MA_MASK (0xf << 0) /* ro - current ai mux */ +#define DAS16CS_MISC1_DAC1CS BIT(3) /* wo - DAC1 chip select */ +#define DAS16CS_MISC1_DACCLK BIT(2) /* wo - Serial DAC clock */ +#define DAS16CS_MISC1_DACSD BIT(1) /* wo - Serial DAC data */ +#define DAS16CS_MISC1_DAC0CS BIT(0) /* wo - DAC0 chip select */ +#define DAS16CS_MISC1_DAC_MASK (0x0f << 0) +#define DAS16CS_MISC2_REG 0x06 +#define DAS16CS_MISC2_BME BIT(14) /* 1=burst enable; 0=disable */ +#define DAS16CS_MISC2_AI_GAIN(x) (((x) & 0xf) << 8) /* AI gain */ +#define DAS16CS_MISC2_AI_GAIN_1 DAS16CS_MISC2_AI_GAIN(4) /* +/-10V */ +#define DAS16CS_MISC2_AI_GAIN_2 DAS16CS_MISC2_AI_GAIN(0) /* +/-5V */ +#define DAS16CS_MISC2_AI_GAIN_4 DAS16CS_MISC2_AI_GAIN(1) /* +/-2.5V */ +#define DAS16CS_MISC2_AI_GAIN_8 DAS16CS_MISC2_AI_GAIN(2) /* +-1.25V */ +#define DAS16CS_MISC2_AI_GAIN_MASK DAS16CS_MISC2_AI_GAIN(0xf) +#define DAS16CS_MISC2_UDIR BIT(7) /* 1=dio7:4 output; 0=input */ +#define DAS16CS_MISC2_LDIR BIT(6) /* 1=dio3:0 output; 0=input */ +#define DAS16CS_MISC2_TRGPOL BIT(5) /* 1=active lo; 0=hi */ +#define DAS16CS_MISC2_TRGSEL BIT(4) /* 1=edge; 0=level */ +#define DAS16CS_MISC2_FFNE BIT(3) /* ro - 1=FIFO not empty */ +#define DAS16CS_MISC2_TRGCLR BIT(3) /* wo - 1=clr (monstable) */ +#define DAS16CS_MISC2_CLK2 BIT(2) /* 1=10 MHz; 0=1 MHz */ +#define DAS16CS_MISC2_CTR1 BIT(1) /* 1=int. 100 kHz; 0=ext. clk */ +#define DAS16CS_MISC2_TRG0 BIT(0) /* 1=enable; 0=disable */ +#define DAS16CS_TIMER_BASE 0x08 +#define DAS16CS_DIO_REG 0x10 struct das16cs_board { const char *name; int device_id; - int n_ao_chans; + unsigned int has_ao:1; + unsigned int has_4dio:1; }; static const struct das16cs_board das16cs_boards[] = { { .name = "PC-CARD DAS16/16-AO", .device_id = 0x0039, - .n_ao_chans = 2, + .has_ao = 1, + .has_4dio = 1, }, { .name = "PCM-DAS16s/16", .device_id = 0x4009, - .n_ao_chans = 0, }, { .name = "PC-CARD DAS16/16", .device_id = 0x0000, /* unknown */ - .n_ao_chans = 0, }, }; struct das16cs_private { - unsigned short status1; - unsigned short status2; + unsigned short misc1; + unsigned short misc2; }; static const struct comedi_lrange das16cs_ai_range = { @@ -90,15 +139,16 @@ static int das16cs_ai_eoc(struct comedi_device *dev, { unsigned int status; - status = inw(dev->iobase + DAS16CS_MISC1); - if (status & 0x0080) + status = inw(dev->iobase + DAS16CS_MISC1_REG); + if (status & DAS16CS_MISC1_EOC) return 0; return -EBUSY; } -static int das16cs_ai_rinsn(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) +static int das16cs_ai_insn_read(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) { struct das16cs_private *devpriv = dev->private; int chan = CR_CHAN(insn->chanspec); @@ -107,37 +157,43 @@ static int das16cs_ai_rinsn(struct comedi_device *dev, int ret; int i; - outw(chan, dev->iobase + DAS16CS_DIO_MUX); + outw(DAS16CS_AI_MUX_SINGLE_CHAN(chan), + dev->iobase + DAS16CS_AI_MUX_REG); - devpriv->status1 &= ~0xf320; - devpriv->status1 |= (aref == AREF_DIFF) ? 0 : 0x0020; - outw(devpriv->status1, dev->iobase + DAS16CS_MISC1); + /* disable interrupts, software convert */ + devpriv->misc1 &= ~(DAS16CS_MISC1_INTE | DAS16CS_MISC1_INT_SRC_MASK | + DAS16CS_MISC1_AI_CONV_MASK); + if (aref == AREF_DIFF) + devpriv->misc1 &= ~DAS16CS_MISC1_SEDIFF; + else + devpriv->misc1 |= DAS16CS_MISC1_SEDIFF; + outw(devpriv->misc1, dev->iobase + DAS16CS_MISC1_REG); - devpriv->status2 &= ~0xff00; + devpriv->misc2 &= ~(DAS16CS_MISC2_BME | DAS16CS_MISC2_AI_GAIN_MASK); switch (range) { case 0: - devpriv->status2 |= 0x800; + devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_1; break; case 1: - devpriv->status2 |= 0x000; + devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_2; break; case 2: - devpriv->status2 |= 0x100; + devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_4; break; case 3: - devpriv->status2 |= 0x200; + devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_8; break; } - outw(devpriv->status2, dev->iobase + DAS16CS_MISC2); + outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG); for (i = 0; i < insn->n; i++) { - outw(0, dev->iobase + DAS16CS_ADC_DATA); + outw(0, dev->iobase + DAS16CS_AI_DATA_REG); ret = comedi_timeout(dev, s, insn, das16cs_ai_eoc, 0); if (ret) return ret; - data[i] = inw(dev->iobase + DAS16CS_ADC_DATA); + data[i] = inw(dev->iobase + DAS16CS_AI_DATA_REG); } return i; @@ -151,39 +207,43 @@ static int das16cs_ao_insn_write(struct comedi_device *dev, struct das16cs_private *devpriv = dev->private; unsigned int chan = CR_CHAN(insn->chanspec); unsigned int val = s->readback[chan]; - unsigned short status1; + unsigned short misc1; int bit; int i; for (i = 0; i < insn->n; i++) { val = data[i]; - outw(devpriv->status1, dev->iobase + DAS16CS_MISC1); + outw(devpriv->misc1, dev->iobase + DAS16CS_MISC1_REG); udelay(1); - status1 = devpriv->status1 & ~0xf; + /* raise the DACxCS line for the non-selected channel */ + misc1 = devpriv->misc1 & ~DAS16CS_MISC1_DAC_MASK; if (chan) - status1 |= 0x0001; + misc1 |= DAS16CS_MISC1_DAC0CS; else - status1 |= 0x0008; + misc1 |= DAS16CS_MISC1_DAC1CS; - outw(status1, dev->iobase + DAS16CS_MISC1); + outw(misc1, dev->iobase + DAS16CS_MISC1_REG); udelay(1); for (bit = 15; bit >= 0; bit--) { - int b = (val >> bit) & 0x1; - - b <<= 1; - outw(status1 | b | 0x0000, dev->iobase + DAS16CS_MISC1); + if ((val >> bit) & 0x1) + misc1 |= DAS16CS_MISC1_DACSD; + else + misc1 &= ~DAS16CS_MISC1_DACSD; + outw(misc1, dev->iobase + DAS16CS_MISC1_REG); udelay(1); - outw(status1 | b | 0x0004, dev->iobase + DAS16CS_MISC1); + outw(misc1 | DAS16CS_MISC1_DACCLK, + dev->iobase + DAS16CS_MISC1_REG); udelay(1); } /* * Make both DAC0CS and DAC1CS high to load * the new data and update analog the output */ - outw(status1 | 0x9, dev->iobase + DAS16CS_MISC1); + outw(misc1 | DAS16CS_MISC1_DAC0CS | DAS16CS_MISC1_DAC1CS, + dev->iobase + DAS16CS_MISC1_REG); } s->readback[chan] = val; @@ -196,9 +256,9 @@ static int das16cs_dio_insn_bits(struct comedi_device *dev, unsigned int *data) { if (comedi_dio_update_state(s, data)) - outw(s->state, dev->iobase + DAS16CS_DIO); + outw(s->state, dev->iobase + DAS16CS_DIO_REG); - data[1] = inw(dev->iobase + DAS16CS_DIO); + data[1] = inw(dev->iobase + DAS16CS_DIO_REG); return insn->n; } @@ -222,11 +282,52 @@ static int das16cs_dio_insn_config(struct comedi_device *dev, if (ret) return ret; - devpriv->status2 &= ~0x00c0; - devpriv->status2 |= (s->io_bits & 0xf0) ? 0x0080 : 0; - devpriv->status2 |= (s->io_bits & 0x0f) ? 0x0040 : 0; + if (s->io_bits & 0xf0) + devpriv->misc2 |= DAS16CS_MISC2_UDIR; + else + devpriv->misc2 &= ~DAS16CS_MISC2_UDIR; + if (s->io_bits & 0x0f) + devpriv->misc2 |= DAS16CS_MISC2_LDIR; + else + devpriv->misc2 &= ~DAS16CS_MISC2_LDIR; + outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG); + + return insn->n; +} + +static int das16cs_counter_insn_config(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) +{ + struct das16cs_private *devpriv = dev->private; - outw(devpriv->status2, dev->iobase + DAS16CS_MISC2); + switch (data[0]) { + case INSN_CONFIG_SET_CLOCK_SRC: + switch (data[1]) { + case 0: /* internal 100 kHz */ + devpriv->misc2 |= DAS16CS_MISC2_CTR1; + break; + case 1: /* external */ + devpriv->misc2 &= ~DAS16CS_MISC2_CTR1; + break; + default: + return -EINVAL; + } + outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG); + break; + case INSN_CONFIG_GET_CLOCK_SRC: + if (devpriv->misc2 & DAS16CS_MISC2_CTR1) { + data[1] = 0; + data[2] = I8254_OSC_BASE_100KHZ; + } else { + data[1] = 1; + data[2] = 0; /* unknown */ + } + break; + default: + return -EINVAL; + } return insn->n; } @@ -278,26 +379,25 @@ static int das16cs_auto_attach(struct comedi_device *dev, if (!dev->pacer) return -ENOMEM; - ret = comedi_alloc_subdevices(dev, 3); + ret = comedi_alloc_subdevices(dev, 4); if (ret) return ret; + /* Analog Input subdevice */ s = &dev->subdevices[0]; - /* analog input subdevice */ s->type = COMEDI_SUBD_AI; - s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF | SDF_CMD_READ; + s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF; s->n_chan = 16; s->maxdata = 0xffff; s->range_table = &das16cs_ai_range; - s->len_chanlist = 16; - s->insn_read = das16cs_ai_rinsn; + s->insn_read = das16cs_ai_insn_read; + /* Analog Output subdevice */ s = &dev->subdevices[1]; - /* analog output subdevice */ - if (board->n_ao_chans) { + if (board->has_ao) { s->type = COMEDI_SUBD_AO; s->subdev_flags = SDF_WRITABLE; - s->n_chan = board->n_ao_chans; + s->n_chan = 2; s->maxdata = 0xffff; s->range_table = &range_bipolar10; s->insn_write = &das16cs_ao_insn_write; @@ -309,16 +409,26 @@ static int das16cs_auto_attach(struct comedi_device *dev, s->type = COMEDI_SUBD_UNUSED; } + /* Digital I/O subdevice */ s = &dev->subdevices[2]; - /* digital i/o subdevice */ s->type = COMEDI_SUBD_DIO; s->subdev_flags = SDF_READABLE | SDF_WRITABLE; - s->n_chan = 8; + s->n_chan = board->has_4dio ? 4 : 8; s->maxdata = 1; s->range_table = &range_digital; s->insn_bits = das16cs_dio_insn_bits; s->insn_config = das16cs_dio_insn_config; + /* Counter subdevice (8254) */ + s = &dev->subdevices[3]; + comedi_8254_subdevice_init(s, dev->pacer); + + dev->pacer->insn_config = das16cs_counter_insn_config; + + /* counters 1 and 2 are used internally for the pacer */ + comedi_8254_set_busy(dev->pacer, 1, true); + comedi_8254_set_busy(dev->pacer, 2, true); + return 0; } |