Anyone had a chance to look over this? > Hi All, > > This has v2 of the dummy driver introduction to start with, > main changes are responses to Manuels review and a kernel doc > fixes (as I remembered the format wrong whilst writing the > original code - oops). > > The second patch is somewhat evil in that it uses an additional > helper module purely to fake event 'interupts'. This is the best > option I have come up with for how to write a 'standard' looking > driver that will work without hardware. It's hacky, but I don't > really want to spend much time on it if it will simply work. > > The code in the actual dummy driver is pretty simple and standard. > Note I have glossed over having a top half to the interrupt as > the evgen driver can't run one as currently stands. We talked > a while ago about a workaround for that in the core, but nothing > is in place as yet. > > The third patch puts basic example buffered support in place. > I haven't provided a trigger because that would require either > extending the nasty evgen module, or writing another. > > Whilst it is decidely 'unusual' we do have a hardware free trigger > in the iio-trig-sysfs. I'd not advise people look at that one > to get an idea of how a normal one works though. > > So at the end of this, the weak point is the lack of an example > trigger, but those vary so much anyway I inclined to tell people > to look for a driver that happens to do roughly what their hardware > needs and copy that! > > What do people think? > > I propose to drop the 3 files I moaned about the other day from > the documentation directory in favour of a short description > of what this driver does but only once this is in place. > > Thanks, > > Jonathan > > p.s. found a few bugs in the test prog, so I'll send a series > out cleaning those up soonish. > > Jonathan Cameron (3): > staging:iio:Documentation Simple dummy driver to explain the basics > staging:iio:dummy Add event support + fake event generator > staging:iio:dummy Add buffered reading support > > drivers/staging/iio/Kconfig | 27 ++ > drivers/staging/iio/Makefile | 7 + > drivers/staging/iio/iio_core.h | 6 +- > drivers/staging/iio/iio_dummy_evgen.c | 217 ++++++++++ > drivers/staging/iio/iio_dummy_evgen.h | 2 + > drivers/staging/iio/iio_simple_dummy.c | 540 +++++++++++++++++++++++++ > drivers/staging/iio/iio_simple_dummy.h | 108 +++++ > drivers/staging/iio/iio_simple_dummy_buffer.c | 206 ++++++++++ > drivers/staging/iio/iio_simple_dummy_events.c | 190 +++++++++ > 9 files changed, 1300 insertions(+), 3 deletions(-) > create mode 100644 drivers/staging/iio/iio_dummy_evgen.c > create mode 100644 drivers/staging/iio/iio_dummy_evgen.h > create mode 100644 drivers/staging/iio/iio_simple_dummy.c > create mode 100644 drivers/staging/iio/iio_simple_dummy.h > create mode 100644 drivers/staging/iio/iio_simple_dummy_buffer.c > create mode 100644 drivers/staging/iio/iio_simple_dummy_events.c > -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
