diff options
| author | Gwendal Grignou <gwendal@chromium.org> | 2021-09-09 14:30:47 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-09-10 22:02:03 +0000 |
| commit | 917fb7fbd7a3681067d171fb385bb77de31f3ab6 (patch) | |
| tree | 1258bfbd5badab72a172684914be5c026404ac5d | |
| parent | 761451afd00f4936c46ed7c917194d5183be46d2 (diff) | |
| download | chrome-ec-917fb7fbd7a3681067d171fb385bb77de31f3ab6.tar.gz | |
driver: LSM6DSM: Limit FIFO transfer buffer size
The buffer is allocated on the stack. It is currently 32*6 bytes.
This is unnecessarily large as we set the FIFO threshold at 1.
Reduce it to 8*6 bytes, the gain of long I2C transactions is negligible
and we save some space in the stack.
BUG=none
BRANCH=none
TEST=buildall
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Change-Id: I8b6f9f2bdfe27206d049c1fe0b82df4caaadce09
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3150677
Reviewed-by: Keith Short <keithshort@chromium.org>
Reviewed-by: Yuval Peress <peress@google.com>
| -rw-r--r-- | driver/stm_mems_common.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/driver/stm_mems_common.h b/driver/stm_mems_common.h index 1984e5e070..0bdfbc5b84 100644 --- a/driver/stm_mems_common.h +++ b/driver/stm_mems_common.h @@ -20,7 +20,7 @@ #define ST_NORMALIZE_RATE(_fs) (1 << __fls(_fs)) #ifdef CONFIG_ACCEL_FIFO -#define FIFO_BUFFER_NUM_PATTERN 32 +#define FIFO_BUFFER_NUM_PATTERN 8 /* Define number of data to be read from FIFO each time * It must be a multiple of OUT_XYZ_SIZE. * In case of LSM6DSM FIFO contains pattern depending ODR |