The main intent is to be able to add more chardevs per IIO device, one
for each buffer. To get there, some rework is needed.
Since v3, some changes have been done. See changelog
Changelog v3 -> v4:
- added patch [1] 'iio: Use an early return in iio_device_alloc to simplify code.'
it's main purpose is so that this patch applies:
[2]'iio: core: add simple centralized mechanism for ioctl() handlers'
depending on the final version of patch [1], patch [2] needs some
minor fixup
- added patch 'iio: core,buffer: wrap iio_buffer_put() call into iio_buffers_put()'
- patch 'iio: core: register buffer fileops only if buffer present'
is now: 'iio: core: register chardev only if needed'
- dropped 'iio: buffer: move sysfs alloc/free in industrialio-buffer.c'
it's likely we won't be doing this patch anymore
- patches:
'iio: buffer: move iio buffer chrdev in industrialio-buffer.c'
'iio: event: move event-only chardev in industrialio-event.c'
have been merged into 'iio: buffer,event: duplicate chardev creation for buffers & events'
since now, the logic is a bit different, and 'indio_dev->chrdev' is
now a reference to either the buffer's chrdev & or the events-only
chrdev
- added simple mechanism to register ioctl() handlers for IIO device
which is currently used only by events mechanism
Changelog v2 -> v3:
* removed double init in
'iio: event: move event-only chardev in industrialio-event.c'
Changelog v1 -> v2:
* re-reviewed some exit-paths and cleanup some potential leaks on those
exit paths:
- for 'iio: buffer: move iio buffer chrdev in industrialio-buffer.c'
add iio_device_buffers_put() helper and calling iio_buffers_uninit()
on device un-regsiter
- for 'move sysfs alloc/free in industrialio-buffer.c'
call 'iio_buffer_free_sysfs_and_mask()' on exit path if
cdev_device_add() fails
- for 'move event-only chardev in industrialio-event.c'
check if event_interface is NULL in
iio_device_unregister_event_chrdev()
Alexandru Ardelean (6):
iio: buffer: add back-ref from iio_buffer to iio_dev
iio: core,buffer: wrap iio_buffer_put() call into iio_buffers_put()
iio: core: register chardev only if needed
iio: buffer,event: duplicate chardev creation for buffers & events
iio: core: add simple centralized mechanism for ioctl() handlers
iio: core: use new common ioctl() mechanism
Jonathan Cameron (1):
iio: Use an early return in iio_device_alloc to simplify code.
drivers/iio/iio_core.h | 29 ++++--
drivers/iio/industrialio-buffer.c | 102 ++++++++++++++++++--
drivers/iio/industrialio-core.c | 151 ++++++++++++------------------
drivers/iio/industrialio-event.c | 100 +++++++++++++++++++-
include/linux/iio/buffer_impl.h | 10 ++
include/linux/iio/iio.h | 8 +-
6 files changed, 290 insertions(+), 110 deletions(-)
--
2.17.1
