diff options
| author | Wai-Hong Tam <waihong@google.com> | 2020-07-23 16:34:35 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-07-30 04:32:32 +0000 |
| commit | c7a2cb72c6de063c83cc2b5385f1e67571267569 (patch) | |
| tree | 45760db3175a93b561cf8cb275649cad30f86c62 /include/hooks.h | |
| parent | b40786b4b8f543e8e33537582ca0b5b71f57b1f1 (diff) | |
| download | chrome-ec-c7a2cb72c6de063c83cc2b5385f1e67571267569.tar.gz | |
hooks: Introduce chipset resume init and suspend complete hooks
These hooks are only enabled through a new CONFIG.
The resume init hook will be used to initialize the SPI driver,
which goes to sleep on suspend. Require to initialize
it first such that it can receive a host resume event, that
notifies the normal resume hook.
The suspend complete hook is paired with the resume init hook,
which reverts the initialization of the SPI driver.
BRANCH=None
BUG=b:148149387
TEST=make buildall -j
TEST=Build successfully on both default off and defining this CONFIG.
Change-Id: I615e2bf92c75f83a7b0ab3eded61a1ef241dbdcf
Signed-off-by: Wai-Hong Tam <waihong@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2321875
Diffstat (limited to 'include/hooks.h')
| -rw-r--r-- | include/hooks.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/hooks.h b/include/hooks.h index bc157bacbd..52bca8b94d 100644 --- a/include/hooks.h +++ b/include/hooks.h @@ -119,6 +119,24 @@ enum hook_type { */ HOOK_CHIPSET_SUSPEND, +#ifdef CONFIG_CHIPSET_RESUME_INIT_HOOK + /* + * Initialization before the system resumes, like enabling the SPI + * driver such that it can receive a host resume event. + * + * Hook routines are called from the chipset task. + */ + HOOK_CHIPSET_RESUME_INIT, + + /* + * System has suspended. It is paired with CHIPSET_RESUME_INIT hook, + * like reverting the initialization of the SPI driver. + * + * Hook routines are called from the chipset task. + */ + HOOK_CHIPSET_SUSPEND_COMPLETE, +#endif + /* * System is shutting down. All suspend rails are still on. * |