From: David Schleef Date: Thu, 19 Feb 2009 17:29:20 +0000 (-0800) Subject: Staging: comedi: add pcl726 driver X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=00a224316fdc0e95c779534acde02579c16e327e;p=linux-beck.git Staging: comedi: add pcl726 driver Driver for Advantech PCL-726 & compatibles From: David Schleef Cc: Ian Abbott Cc: Frank Mori Hess Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/comedi/drivers/pcl726.c b/drivers/staging/comedi/drivers/pcl726.c new file mode 100644 index 000000000000..48502660c077 --- /dev/null +++ b/drivers/staging/comedi/drivers/pcl726.c @@ -0,0 +1,373 @@ +/* + comedi/drivers/pcl726.c + + hardware driver for Advantech cards: + card: PCL-726, PCL-727, PCL-728 + driver: pcl726, pcl727, pcl728 + and for ADLink cards: + card: ACL-6126, ACL-6128 + driver: acl6126, acl6128 + + 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: pcl726 +Description: Advantech PCL-726 & compatibles +Author: ds +Status: untested +Devices: [Advantech] PCL-726 (pcl726), PCL-727 (pcl727), PCL-728 (pcl728), + [ADLink] ACL-6126 (acl6126), ACL-6128 (acl6128) + +Interrupts are not supported. + + Options for PCL-726: + [0] - IO Base + [2]...[7] - D/A output range for channel 1-6: + 0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V, + 4: 4-20mA, 5: unknown (external reference) + + Options for PCL-727: + [0] - IO Base + [2]...[13] - D/A output range for channel 1-12: + 0: 0-5V, 1: 0-10V, 2: +/-5V, + 3: 4-20mA + + Options for PCL-728 and ACL-6128: + [0] - IO Base + [2], [3] - D/A output range for channel 1 and 2: + 0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V, + 4: 4-20mA, 5: 0-20mA + + Options for ACL-6126: + [0] - IO Base + [1] - IRQ (0=disable, 3, 5, 6, 7, 9, 10, 11, 12, 15) (currently ignored) + [2]...[7] - D/A output range for channel 1-6: + 0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V, + 4: 4-20mA +*/ + +/* + Thanks to Circuit Specialists for having programming info (!) on + their web page. (http://www.cir.com/) +*/ + +#include "../comedidev.h" + +#include + +#undef ACL6126_IRQ /* no interrupt support (yet) */ + +#define PCL726_SIZE 16 +#define PCL727_SIZE 32 +#define PCL728_SIZE 8 + +#define PCL726_DAC0_HI 0 +#define PCL726_DAC0_LO 1 + +#define PCL726_DO_HI 12 +#define PCL726_DO_LO 13 +#define PCL726_DI_HI 14 +#define PCL726_DI_LO 15 + +#define PCL727_DO_HI 24 +#define PCL727_DO_LO 25 +#define PCL727_DI_HI 0 +#define PCL727_DI_LO 1 + +static const comedi_lrange range_4_20mA = { 1, {RANGE_mA(4, 20)} }; +static const comedi_lrange range_0_20mA = { 1, {RANGE_mA(0, 20)} }; + +static const comedi_lrange *const rangelist_726[] = { + &range_unipolar5, &range_unipolar10, + &range_bipolar5, &range_bipolar10, + &range_4_20mA, &range_unknown +}; + +static const comedi_lrange *const rangelist_727[] = { + &range_unipolar5, &range_unipolar10, + &range_bipolar5, + &range_4_20mA +}; + +static const comedi_lrange *const rangelist_728[] = { + &range_unipolar5, &range_unipolar10, + &range_bipolar5, &range_bipolar10, + &range_4_20mA, &range_0_20mA +}; + +static int pcl726_attach(comedi_device * dev, comedi_devconfig * it); +static int pcl726_detach(comedi_device * dev); + +typedef struct { + const char *name; // driver name + int n_aochan; // num of D/A chans + int num_of_ranges; // num of ranges + unsigned int IRQbits; // allowed interrupts + unsigned int io_range; // len of IO space + char have_dio; // 1=card have DI/DO ports + int di_hi; // ports for DI/DO operations + int di_lo; + int do_hi; + int do_lo; + const comedi_lrange *const *range_type_list; // list of supported ranges +} boardtype; + +static const boardtype boardtypes[] = { + {"pcl726", 6, 6, 0x0000, PCL726_SIZE, 1, + PCL726_DI_HI, PCL726_DI_LO, PCL726_DO_HI, PCL726_DO_LO, + &rangelist_726[0],}, + {"pcl727", 12, 4, 0x0000, PCL727_SIZE, 1, + PCL727_DI_HI, PCL727_DI_LO, PCL727_DO_HI, PCL727_DO_LO, + &rangelist_727[0],}, + {"pcl728", 2, 6, 0x0000, PCL728_SIZE, 0, + 0, 0, 0, 0, + &rangelist_728[0],}, + {"acl6126", 6, 5, 0x96e8, PCL726_SIZE, 1, + PCL726_DI_HI, PCL726_DI_LO, PCL726_DO_HI, PCL726_DO_LO, + &rangelist_726[0],}, + {"acl6128", 2, 6, 0x0000, PCL728_SIZE, 0, + 0, 0, 0, 0, + &rangelist_728[0],}, +}; + +#define n_boardtypes (sizeof(boardtypes)/sizeof(boardtype)) +#define this_board ((const boardtype *)dev->board_ptr) + +static comedi_driver driver_pcl726 = { + driver_name:"pcl726", + module:THIS_MODULE, + attach:pcl726_attach, + detach:pcl726_detach, + board_name:&boardtypes[0].name, + num_names:n_boardtypes, + offset:sizeof(boardtype), +}; + +COMEDI_INITCLEANUP(driver_pcl726); + +typedef struct { + int bipolar[12]; + const comedi_lrange *rangelist[12]; + lsampl_t ao_readback[12]; +} pcl726_private; +#define devpriv ((pcl726_private *)dev->private) + +static int pcl726_ao_insn(comedi_device * dev, comedi_subdevice * s, + comedi_insn * insn, lsampl_t * data) +{ + int hi, lo; + int n; + int chan = CR_CHAN(insn->chanspec); + + for (n = 0; n < insn->n; n++) { + lo = data[n] & 0xff; + hi = (data[n] >> 8) & 0xf; + if (devpriv->bipolar[chan]) + hi ^= 0x8; + /* + * the programming info did not say which order + * to write bytes. switch the order of the next + * two lines if you get glitches. + */ + outb(hi, dev->iobase + PCL726_DAC0_HI + 2 * chan); + outb(lo, dev->iobase + PCL726_DAC0_LO + 2 * chan); + devpriv->ao_readback[chan] = data[n]; + } + + return n; +} + +static int pcl726_ao_insn_read(comedi_device * dev, comedi_subdevice * s, + comedi_insn * insn, lsampl_t * data) +{ + int chan = CR_CHAN(insn->chanspec); + int n; + + for (n = 0; n < insn->n; n++) { + data[n] = devpriv->ao_readback[chan]; + } + return n; +} + +static int pcl726_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 + this_board->di_lo) | + (inb(dev->iobase + this_board->di_hi) << 8); + + return 2; +} + +static int pcl726_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]; + } + if (data[1] & 0x00ff) + outb(s->state & 0xff, dev->iobase + this_board->do_lo); + if (data[1] & 0xff00) + outb((s->state >> 8), dev->iobase + this_board->do_hi); + + data[1] = s->state; + + return 2; +} + +static int pcl726_attach(comedi_device * dev, comedi_devconfig * it) +{ + comedi_subdevice *s; + unsigned long iobase; + unsigned int iorange; + int ret, i; +#ifdef ACL6126_IRQ + unsigned int irq; +#endif + + iobase = it->options[0]; + iorange = this_board->io_range; + printk("comedi%d: pcl726: board=%s, 0x%03lx ", dev->minor, + this_board->name, iobase); + if (!request_region(iobase, iorange, "pcl726")) { + printk("I/O port conflict\n"); + return -EIO; + } + + dev->iobase = iobase; + + dev->board_name = this_board->name; + + if ((ret = alloc_private(dev, sizeof(pcl726_private))) < 0) + return -ENOMEM; + + for (i = 0; i < 12; i++) { + devpriv->bipolar[i] = 0; + devpriv->rangelist[i] = &range_unknown; + } + +#ifdef ACL6126_IRQ + irq = 0; + if (boardtypes[board].IRQbits != 0) { /* board support IRQ */ + irq = it->options[1]; + devpriv->first_chan = 2; + if (irq) { /* we want to use IRQ */ + if (((1 << irq) & boardtypes[board].IRQbits) == 0) { + rt_printk + (", IRQ %d is out of allowed range, DISABLING IT", + irq); + irq = 0; /* Bad IRQ */ + } else { + if (comedi_request_irq(irq, interrupt_pcl818, 0, + "pcl726", dev)) { + rt_printk + (", unable to allocate IRQ %d, DISABLING IT", + irq); + irq = 0; /* Can't use IRQ */ + } else { + rt_printk(", irq=%d", irq); + } + } + } + } + + dev->irq = irq; +#endif + + printk("\n"); + + if ((ret = alloc_subdevices(dev, 3)) < 0) + return ret; + + s = dev->subdevices + 0; + /* ao */ + s->type = COMEDI_SUBD_AO; + s->subdev_flags = SDF_WRITABLE | SDF_GROUND; + s->n_chan = this_board->n_aochan; + s->maxdata = 0xfff; + s->len_chanlist = 1; + s->insn_write = pcl726_ao_insn; + s->insn_read = pcl726_ao_insn_read; + s->range_table_list = devpriv->rangelist; + for (i = 0; i < this_board->n_aochan; i++) { + int j; + + j = it->options[2 + 1]; + if ((j < 0) || (j >= this_board->num_of_ranges)) { + printk("Invalid range for channel %d! Must be 0<=%d<%d\n", i, j, this_board->num_of_ranges - 1); + j = 0; + } + devpriv->rangelist[i] = this_board->range_type_list[j]; + if (devpriv->rangelist[i]->range[0].min == + -devpriv->rangelist[i]->range[0].max) + devpriv->bipolar[i] = 1; /* bipolar range */ + } + + s = dev->subdevices + 1; + /* di */ + if (!this_board->have_dio) { + s->type = COMEDI_SUBD_UNUSED; + } else { + s->type = COMEDI_SUBD_DI; + s->subdev_flags = SDF_READABLE | SDF_GROUND; + s->n_chan = 16; + s->maxdata = 1; + s->len_chanlist = 1; + s->insn_bits = pcl726_di_insn_bits; + s->range_table = &range_digital; + } + + s = dev->subdevices + 2; + /* do */ + if (!this_board->have_dio) { + s->type = COMEDI_SUBD_UNUSED; + } else { + s->type = COMEDI_SUBD_DO; + s->subdev_flags = SDF_WRITABLE | SDF_GROUND; + s->n_chan = 16; + s->maxdata = 1; + s->len_chanlist = 1; + s->insn_bits = pcl726_do_insn_bits; + s->range_table = &range_digital; + } + + return 0; +} + +static int pcl726_detach(comedi_device * dev) +{ +// printk("comedi%d: pcl726: remove\n",dev->minor); + +#ifdef ACL6126_IRQ + if (dev->irq) { + comedi_free_irq(dev->irq, dev); + } +#endif + + if (dev->iobase) + release_region(dev->iobase, this_board->io_range); + + return 0; +}