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| author | Shecky Lin <sheckylin@chromium.org> | 2020-03-11 15:30:13 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-03-17 12:11:49 +0000 |
| commit | af54ae817e5e070b5cbc0c626013b9fa807bf8d9 (patch) | |
| tree | c48d966699a3c7cc9fde1cf5e6b2c324a2591fb9 /include/i2c_hid_touchpad.h | |
| parent | 1499ed62a817db87a6cee635fa3c409b323d6ebf (diff) | |
| download | chrome-ec-af54ae817e5e070b5cbc0c626013b9fa807bf8d9.tar.gz | |
i2c_hid_touchpad: Add function to prepare new input reports
This is part of a chain to add a common I2C HID interface for
touchpads.
The CL adds a function to put a new input report in the buffer
which would be sent next time when the host tries to read one.
BUG=chromium:1008568
BRANCH=none
TEST=Build and run on MCU to forward touchpad events to host
through I2C HID.
Cq-Depend: chromium:2094928
Change-Id: I321054f73155da03d951a4d586dd316caf37f0fc
Signed-off-by: Shecky Lin <sheckylin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2094929
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Diffstat (limited to 'include/i2c_hid_touchpad.h')
| -rw-r--r-- | include/i2c_hid_touchpad.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/i2c_hid_touchpad.h b/include/i2c_hid_touchpad.h index 3bb53f4020..d5d728a488 100644 --- a/include/i2c_hid_touchpad.h +++ b/include/i2c_hid_touchpad.h @@ -69,5 +69,13 @@ void i2c_hid_touchpad_init(void); int i2c_hid_touchpad_process(unsigned int len, uint8_t *buffer, void (*send_response)(int len), uint8_t *data, int *reg, int *cmd); +/** + * Compile an (outgoing) HID input report for an (incoming) touchpad event + * + * The compiled report would be sent next time when the host requests one. + * + * @param touchpad_event Touchpad event data + */ +void i2c_hid_compile_report(struct touchpad_event *event); #endif /* __CROS_EC_I2C_HID_TOUCHPAD_H */ |