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| author | Daisuke Nojiri <dnojiri@chromium.org> | 2018-10-16 15:16:29 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-10-19 23:21:56 -0700 |
| commit | 9a890ad22965daa7e9365a0b2cb8c734ae41a842 (patch) | |
| tree | 27e3f1f0845031e685fc46ffdad44d8cb87adfeb /include/keyboard_config.h | |
| parent | 4d4d8f06e91090336c2eb29ee00ca86fea2bb796 (diff) | |
| download | chrome-ec-9a890ad22965daa7e9365a0b2cb8c734ae41a842.tar.gz | |
Keyboard: Allow keyboard size to be set at run time
Currently, the keyboard size (i.e. number of columns) is static.
This patch allows it to be configured at run time. It's required to
support a keyboard with/without keypad in a single image.
KEYBOARD_COLS_MAX has the build time col size. It's used to allocate
exact spaces for arrays. Actual keyboard scanning is done using
keyboard_cols, which holds a runtime col size.
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
BUG=b:117126568
BRANCH=none
TEST=Verify keyboard functionality on Sona and Veyron.
Change-Id: I4b3552be0b4b315c3fe5a6884cf25e10aba8be7c
Reviewed-on: https://chromium-review.googlesource.com/1285292
Commit-Ready: Daisuke Nojiri <dnojiri@chromium.org>
Tested-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Diffstat (limited to 'include/keyboard_config.h')
| -rw-r--r-- | include/keyboard_config.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/include/keyboard_config.h b/include/keyboard_config.h index 932935de4c..81174eb850 100644 --- a/include/keyboard_config.h +++ b/include/keyboard_config.h @@ -16,9 +16,16 @@ #endif /* Keyboard matrix is 13 output columns x 8 input rows */ -#define KEYBOARD_COLS 13 +/* + * KEYBOARD_COLS_MAX has the build time column size. It's used to allocate + * exact spaces for arrays. Actual keyboard scanning is done using + * keyboard_cols, which holds a runtime column size. + */ +#define KEYBOARD_COLS_MAX 13 #define KEYBOARD_ROWS 8 +extern uint8_t keyboard_cols; + #define KEYBOARD_ROW_TO_MASK(r) (1 << (r)) /* Columns and masks for keys we particularly care about */ |