[RFC v2 11/20] dm: add event notification

[Simon Glass]

Hi Takahiro,

On Fri, 10 Dec 2021 at 00:00, AKASHI Takahiro
<takahiro.akashi at linaro.org> wrote:
>
> From: Simon Glass <sjg at chromium.org>
>
> This is a draft implementation of event notification mechanism from Simon.
> Under this scheme, any U-Boot subsystem can register some kind of callback
> function to a particular event (more event types will be added later) and
> that function will be invoked once the event is fired.
>
> As a first user, UEFI subsystem makes use of PROBE and REMOVE events so
> that we will be able to automatically create/remove efi_disk objects
> relying on associated block devices (UCLASS_BLK).
>
> To run the test:
> ./u-boot -T -c "ut common test_event_probe"
>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> [add REMOVE event; fix checkpatch warnings]
> Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
> ---
>  common/Kconfig                    |  11 ++++
>  common/Makefile                   |   2 +
>  common/board_f.c                  |   2 +
>  common/event.c                    | 103 +++++++++++++++++++++++++++++
>  common/log.c                      |   1 +
>  drivers/core/device-remove.c      |   9 +++
>  drivers/core/device.c             |   9 +++
>  include/asm-generic/global_data.h |   3 +
>  include/dm/device-internal.h      |  10 +++
>  include/event.h                   | 105 ++++++++++++++++++++++++++++++
>  include/event_internal.h          |  34 ++++++++++
>  include/log.h                     |   2 +
>  test/common/Makefile              |   1 +
>  test/common/event.c               |  87 +++++++++++++++++++++++++
>  test/test-main.c                  |   5 ++
>  15 files changed, 384 insertions(+)
>  create mode 100644 common/event.c
>  create mode 100644 include/event.h
>  create mode 100644 include/event_internal.h
>  create mode 100644 test/common/event.c

Should we split this into a few patches for submission? Also needs docs.

Regards,
Simon