drivers/comedi/drivers.c

123  * comedi_alloc_subdev_readback() - Allocate memory for the subdevice readback
124  * @s: COMEDI subdevice.
127  * the last values written to a subdevice's analog output channels (at least
137  * Returns 0 on success, -EINVAL if the subdevice has no channels, or
237  * comedi_readback_insn_read() - A generic (*insn_read) for subdevice readback.
239  * @s: COMEDI subdevice.
245  * directly as the subdevice's handler (@s->insn_read) or called via a
274  * @s: COMEDI subdevice.
313  * @s: COMEDI subdevice.
370  * @s: COMEDI subdevice.
402  * @s: COMEDI subdevice.
405  * Determines the overall scan length according to the subdevice type and the
410  * short or unsigned int values according to the subdevice's %SDF_LSAMPL
411  * flag.  For other types of subdevice, samples are assumed to occupy a
439  * @s: COMEDI subdevice.
441  * Determines the overall scan length according to the subdevice type and the
446  * short or unsigned int values according to the subdevice's %SDF_LSAMPL
447  * flag.  For other types of subdevice, samples are assumed to occupy a
480  * @s: COMEDI subdevice.
506  * @s: COMEDI subdevice.
538  * @s: COMEDI subdevice.
577  * @s: COMEDI subdevice.
580  * with the subdevice.  Call the subdevice's @s->cancel() handler if the
930  * any special clean-up for their private device or subdevice storage.  It