Ian Abbott c62f5032f7 comedi: comedi_8254: Use a call-back function for register access ... Rework the comedi_8254 module to use a call-back function for register access. This will make it easier to isolate the parts that will depend on the `CONFIG_HAS_IOPORT` macro being defined and also allows the possibility of supplying an external callback function during initialization by a variant of the `comedi_8254_init()` and `comedi_8254_mm_init()` functions, although that has not been implemented yet. The `struct comedi_8254` members have been changed to use a pointer to a callback function and a context of type `unsigned long`. The `comedi_8254_init()` and `comedi_8254_mm_init()` functions use an internal callback function and set the context to the base address of the registers (for `comedi_8254_mm_init()` that involves converting a `void __iomem *` to `unsigned long`). A minor change to `dio200_subdev_8254_offset()` in the amplc_dio200_common module has been made due to the changes in `struct comedi_8254`. Cc: Arnd Bergmann <arnd@kernel.org> Cc: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Link: https://lore.kernel.org/r/20230913170712.111719-3-abbotti@mev.co.uk Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-10-05 13:34:04 +02:00
..
comedi_8254.h	comedi: comedi_8254: Use a call-back function for register access	2023-10-05 13:34:04 +02:00
comedi_8255.h
comedi_isadma.h	comedi: Move "comedi_isadma.h" to <linux/comedi/comedi_isadma.h>	2021-11-26 16:48:59 +01:00
comedi_pci.h
comedi_pcmcia.h
comedi_usb.h
comedidev.h
comedilib.h