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| author | Enrico Granata <egranata@chromium.org> | 2019-06-06 10:45:38 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2019-06-19 17:04:12 +0000 |
| commit | 2fd0e5728a1665f582459918931a20de5758d7c7 (patch) | |
| tree | d41b084a4e374915fa2ec459a2e7660b3c1fe1cb | |
| parent | 7481d40cfcec3247a9bbd5a9b8eaa61d99b1a30b (diff) | |
| download | chrome-ec-2fd0e5728a1665f582459918931a20de5758d7c7.tar.gz | |
driver: set Kionix accel min frequency to 12.5Hz
The EC is running at 10Hz itself, so it won't be able to properly
handle frequencies below that threshold, and data will end up being
sent to the kernel at 10Hz.
This is a source of CTS issues on some devices, as Android expects
to be able to program the sensor to send data at 1Hz given the
sensor's configuration parameters.
Fix the issue by picking the closest frequency above 10Hz that the
accelerometer supports, i.e. 12.5Hz
Conflicts:
MOTION_MAX_SENSOR_FREQUENCY not defined in the branch
BUG=b:134422740
BRANCH=oak
TEST=run CtsSensorTestCases, observe it pass
Change-Id: I56772009817e3cbd452e96637c0a78f54f3854c7
Signed-off-by: Enrico Granata <egranata@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1647363
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1667524
Reviewed-by: Allan Sword <asword@google.com>
Commit-Queue: Allan Sword <asword@google.com>
| -rw-r--r-- | driver/accel_kx022.h | 2 | ||||
| -rw-r--r-- | driver/accel_kxcj9.h | 4 |
2 files changed, 5 insertions, 1 deletions
diff --git a/driver/accel_kx022.h b/driver/accel_kx022.h index ec043b40ba..9ea5af674b 100644 --- a/driver/accel_kx022.h +++ b/driver/accel_kx022.h @@ -124,7 +124,7 @@ #define KX022_INC2_XNWUE (1 << 5) /* Min and Max sampling frequency in mHz */ -#define KX022_ACCEL_MIN_FREQ 781 +#define KX022_ACCEL_MIN_FREQ 12500 #define KX022_ACCEL_MAX_FREQ 1600000 #endif /* __CROS_EC_ACCEL_KX022_H */ diff --git a/driver/accel_kxcj9.h b/driver/accel_kxcj9.h index b3702ea541..72778e7e53 100644 --- a/driver/accel_kxcj9.h +++ b/driver/accel_kxcj9.h @@ -104,4 +104,8 @@ #define KXCJ9_OSA_1600_HZ 7 #define KXCJ9_OSA_FIELD 0xf +/* Min and Max sampling frequency in mHz */ +#define KXCJ9_ACCEL_MIN_FREQ 12500 +#define KXCJ9_ACCEL_MAX_FREQ 1600000 + #endif /* __CROS_EC_ACCEL_KXCJ9_H */ |