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Diffstat (limited to 'board/cr50/board.h')
| -rw-r--r-- | board/cr50/board.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/board/cr50/board.h b/board/cr50/board.h index 27faa9341a..b851f98209 100644 --- a/board/cr50/board.h +++ b/board/cr50/board.h @@ -180,6 +180,43 @@ enum device_type { DEVICE_COUNT }; +/* + * Device states + * + * Note that not all states are used by all devices. + */ +enum device_state { + /* Initial state at boot */ + DEVICE_STATE_INIT = 0, + + /* + * Detect was not asserted at boot, but we're not willing to give up on + * the device right away so we're debouncing to see if it shows up. + */ + DEVICE_STATE_INIT_DEBOUNCING, + + /* Disconnected or off, because detect is deasserted */ + DEVICE_STATE_DISCONNECTED, + DEVICE_STATE_OFF, + + /* Device state is not knowable because we're driving detect */ + DEVICE_STATE_UNDETECTABLE, + + /* Connected or on, because detect is asserted */ + DEVICE_STATE_CONNECTED, + DEVICE_STATE_ON, + + /* + * Device was connected, but we saw detect deasserted and are + * debouncing to see if it stays deasserted - at which point we'll + * decide that it's disconnected. + */ + DEVICE_STATE_DEBOUNCING, + + /* Device state is unknown. Used only by legacy device_state code. */ + DEVICE_STATE_UNKNOWN, +}; + /* NVMem variables. */ enum nvmem_vars { NVMEM_VAR_CONSOLE_LOCKED = 0, |