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| author | Shawn Nematbakhsh <shawnn@chromium.org> | 2013-06-24 10:40:48 -0700 |
|---|---|---|
| committer | ChromeBot <chrome-bot@google.com> | 2013-06-24 15:44:24 -0700 |
| commit | 6957684d304825cc6fd926c8ee7a2ccb1edb6839 (patch) | |
| tree | 9ed2e6822de40fed24407fe2b90e993d46cc545a | |
| parent | f4ed65f3af709d0b59a582648d5ba5f97f29a1d0 (diff) | |
| download | chrome-ec-stabilize-daisy-4319.96.B.tar.gz | |
keyboard: Preserve keystroke enable state.stabilize-daisy-4319.96.Brelease-R29-4319.B
Preserve the state of keystroke_enabled to prevent keystrokes from being
initially disabled on RO --> RW transition. This will allow us to use
the keyboard on EC cold boot.
BUG=chrome-os-partner:20430.
TEST=Manual. Verify keyboard works on EC cold boot on Peppy.
BRANCH=None.
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Change-Id: I603a73ee0f8435c91d430a64803add345c92f025
Reviewed-on: https://gerrit.chromium.org/gerrit/59798
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
| -rw-r--r-- | common/keyboard_8042.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/common/keyboard_8042.c b/common/keyboard_8042.c index 8e2646cb4a..f45c178908 100644 --- a/common/keyboard_8042.c +++ b/common/keyboard_8042.c @@ -133,12 +133,13 @@ static uint8_t typematic_scan_code[MAX_SCAN_CODE_LEN]; static timestamp_t typematic_deadline; #define KB_SYSJUMP_TAG 0x4b42 /* "KB" */ -#define KB_HOOK_VERSION 1 +#define KB_HOOK_VERSION 2 /* the previous keyboard state before reboot_ec. */ struct kb_state { uint8_t codeset; uint8_t ctlram; - uint8_t pad[2]; /* Pad to 4 bytes for system_add_jump_tag(). */ + uint8_t keystroke_enabled; + uint8_t pad; /* Pad to 4 bytes for system_add_jump_tag(). */ }; /* The standard Chrome OS keyboard matrix table. */ @@ -1047,6 +1048,7 @@ static void keyboard_preserve_state(void) state.codeset = scancode_set; state.ctlram = controller_ram[0]; + state.keystroke_enabled = keystroke_enabled; system_add_jump_tag(KB_SYSJUMP_TAG, KB_HOOK_VERSION, sizeof(state), &state); @@ -1067,6 +1069,7 @@ static void keyboard_restore_state(void) /* Coming back from a sysjump, so restore settings. */ scancode_set = prev->codeset; update_ctl_ram(0, prev->ctlram); + keystroke_enabled = prev->keystroke_enabled; } } DECLARE_HOOK(HOOK_INIT, keyboard_restore_state, HOOK_PRIO_DEFAULT); |