Staging: comedi: add pcl730 driver

Driver for Advantech PCL-730 & compatibles

From: José Luis Sánchez <jsanchezv@teleline.es>
Cc: David Schleef <ds@schleef.org>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/comedi/drivers/pcl730.c b/drivers/staging/comedi/drivers/pcl730.c
new file mode 100644 (file)
index 0000000..290a32f
--- /dev/null
+++ b/drivers/staging/comedi/drivers/pcl730.c
@@ -0,0 +1,166 @@
+/*
+ * comedi/drivers/pcl730.c
+ * Driver for Advantech PCL-730 and clones
+ * José Luis Sánchez
+ */
+/*
+Driver: pcl730
+Description: Advantech PCL-730 (& compatibles)
+Author: José Luis Sánchez (jsanchezv@teleline.es)
+Status: untested
+Devices: [Advantech] PCL-730 (pcl730), [ICP] ISO-730 (iso730),
+                [Adlink] ACL-7130 (acl7130)
+
+Interrupts are not supported.
+The ACL-7130 card have an 8254 timer/counter not supported by this driver.
+*/
+
+#include "../comedidev.h"
+
+#include <linux/ioport.h>
+
+#define PCL730_SIZE            4
+#define ACL7130_SIZE   8
+#define PCL730_IDIO_LO 0       /* Isolated Digital I/O low byte (ID0-ID7) */
+#define PCL730_IDIO_HI 1       /* Isolated Digital I/O high byte (ID8-ID15) */
+#define PCL730_DIO_LO  2       /* TTL Digital I/O low byte (D0-D7) */
+#define PCL730_DIO_HI  3       /* TTL Digital I/O high byte (D8-D15) */
+
+static int pcl730_attach(comedi_device * dev, comedi_devconfig * it);
+static int pcl730_detach(comedi_device * dev);
+
+typedef struct {
+       const char *name;       // board name
+       unsigned int io_range;  // len of I/O space
+} boardtype;
+
+static const boardtype boardtypes[] = {
+       {"pcl730", PCL730_SIZE,},
+       {"iso730", PCL730_SIZE,},
+       {"acl7130", ACL7130_SIZE,},
+};
+
+#define n_boardtypes (sizeof(boardtypes)/sizeof(boardtype))
+#define this_board ((const boardtype *)dev->board_ptr)
+
+static comedi_driver driver_pcl730 = {
+      driver_name:"pcl730",
+      module:THIS_MODULE,
+      attach:pcl730_attach,
+      detach:pcl730_detach,
+      board_name:&boardtypes[0].name,
+      num_names:n_boardtypes,
+      offset:sizeof(boardtype),
+};
+
+COMEDI_INITCLEANUP(driver_pcl730);
+
+static int pcl730_do_insn(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[0] & 0x00ff)
+               outb(s->state & 0xff,
+                       dev->iobase + ((unsigned long)s->private));
+       if (data[0] & 0xff00)
+               outb((s->state >> 8),
+                       dev->iobase + ((unsigned long)s->private) + 1);
+
+       data[1] = s->state;
+
+       return 2;
+}
+
+static int pcl730_di_insn(comedi_device * dev, comedi_subdevice * s,
+       comedi_insn * insn, lsampl_t * data)
+{
+       if (insn->n != 2)
+               return -EINVAL;
+
+       data[1] = inb(dev->iobase + ((unsigned long)s->private)) |
+               (inb(dev->iobase + ((unsigned long)s->private) + 1) << 8);
+
+       return 2;
+}
+
+static int pcl730_attach(comedi_device * dev, comedi_devconfig * it)
+{
+       comedi_subdevice *s;
+       unsigned long iobase;
+       unsigned int iorange;
+
+       iobase = it->options[0];
+       iorange = this_board->io_range;
+       printk("comedi%d: pcl730: board=%s 0x%04lx ", dev->minor,
+               this_board->name, iobase);
+       if (!request_region(iobase, iorange, "pcl730")) {
+               printk("I/O port conflict\n");
+               return -EIO;
+       }
+       dev->board_name = this_board->name;
+       dev->iobase = iobase;
+       dev->irq = 0;
+
+       if (alloc_subdevices(dev, 4) < 0)
+               return -ENOMEM;
+
+       s = dev->subdevices + 0;
+       /* Isolated do */
+       s->type = COMEDI_SUBD_DO;
+       s->subdev_flags = SDF_WRITABLE;
+       s->maxdata = 1;
+       s->n_chan = 16;
+       s->insn_bits = pcl730_do_insn;
+       s->range_table = &range_digital;
+       s->private = (void *)PCL730_IDIO_LO;
+
+       s = dev->subdevices + 1;
+       /* Isolated di */
+       s->type = COMEDI_SUBD_DI;
+       s->subdev_flags = SDF_READABLE;
+       s->maxdata = 1;
+       s->n_chan = 16;
+       s->insn_bits = pcl730_di_insn;
+       s->range_table = &range_digital;
+       s->private = (void *)PCL730_IDIO_LO;
+
+       s = dev->subdevices + 2;
+       /* TTL do */
+       s->type = COMEDI_SUBD_DO;
+       s->subdev_flags = SDF_WRITABLE;
+       s->maxdata = 1;
+       s->n_chan = 16;
+       s->insn_bits = pcl730_do_insn;
+       s->range_table = &range_digital;
+       s->private = (void *)PCL730_DIO_LO;
+
+       s = dev->subdevices + 3;
+       /* TTL di */
+       s->type = COMEDI_SUBD_DI;
+       s->subdev_flags = SDF_READABLE;
+       s->maxdata = 1;
+       s->n_chan = 16;
+       s->insn_bits = pcl730_di_insn;
+       s->range_table = &range_digital;
+       s->private = (void *)PCL730_DIO_LO;
+
+       printk("\n");
+
+       return 0;
+}
+
+static int pcl730_detach(comedi_device * dev)
+{
+       printk("comedi%d: pcl730: remove\n", dev->minor);
+
+       if (dev->iobase)
+               release_region(dev->iobase, this_board->io_range);
+
+       return 0;
+}