const char *name;
};
-/* this structure is for data unique to this hardware driver. If
- * several hardware drivers keep similar information in this structure,
- * feel free to suggest moving the variable to the struct comedi_device struct.
- */
struct dmm32at_private {
int data;
};
-/*
- * "instructions" read/write data in "one-shot" or "software-triggered"
- * mode.
- */
-
static int dmm32at_ai_rinsn(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
return n;
}
-/* This function doesn't require a particular form, this is just
- * what happens to be used in some of the drivers. It should
- * convert ns nanoseconds to a counter value suitable for programming
- * the device. Also, it should adjust ns so that it cooresponds to
- * the actual time that the device will use. */
static int dmm32at_ns_to_timer(unsigned int *ns, int round)
{
/* trivial timer */
- /* if your timing is done through two cascaded timers, the
- * i8253_cascade_ns_to_timer() function in 8253.h can be
- * very helpful. There are also i8254_load() and i8254_mm_load()
- * which can be used to load values into the ubiquitous 8254 counters
- */
-
return *ns;
}
int tmp;
int start_chan, gain, i;
- /* printk("dmmat32 in command test\n"); */
-
- /* cmdtest tests a particular command to see if it is valid.
- * Using the cmdtest ioctl, a user can create a valid cmd
- * and then have it executes by the cmd ioctl.
- *
- * cmdtest returns 1,2,3,4 or 0, depending on which tests
- * the command passes. */
-
/* step 1: make sure trigger sources are trivially valid */
tmp = cmd->start_src;
return i;
}
-/* AO subdevices should have a read insn as well as a write insn.
- * Usually this means copying a value stored in devpriv. */
static int dmm32at_ao_rinsn(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
return i;
}
-/* DIO devices are slightly special. Although it is possible to
- * implement the insn_read/insn_write interface, it is much more
- * useful to applications if you implement the insn_bits interface.
- * This allows packed reading/writing of the DIO channels. The
- * comedi core can convert between insn_bits and insn_read/write */
static int dmm32at_dio_insn_bits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
dev->board_name = board->name;
-/*
- * Allocate the private structure area. alloc_private() is a
- * convenient macro defined in comedidev.h.
- */
if (alloc_private(dev, sizeof(*devpriv)) < 0)
return -ENOMEM;
devpriv = dev->private;