aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/iio/accel/mma8452.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/iio/accel/mma8452.c')
-rw-r--r--drivers/iio/accel/mma8452.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c
index 17aeea170566..2a5fa9a436e5 100644
--- a/drivers/iio/accel/mma8452.c
+++ b/drivers/iio/accel/mma8452.c
@@ -111,8 +111,14 @@ static const int mma8452_samp_freq[8][2] = {
111 {6, 250000}, {1, 560000} 111 {6, 250000}, {1, 560000}
112}; 112};
113 113
114/*
115 * Hardware has fullscale of -2G, -4G, -8G corresponding to raw value -2048
116 * The userspace interface uses m/s^2 and we declare micro units
117 * So scale factor is given by:
118 * g * N * 1000000 / 2048 for N = 2, 4, 8 and g=9.80665
119 */
114static const int mma8452_scales[3][2] = { 120static const int mma8452_scales[3][2] = {
115 {0, 977}, {0, 1953}, {0, 3906} 121 {0, 9577}, {0, 19154}, {0, 38307}
116}; 122};
117 123
118static ssize_t mma8452_show_samp_freq_avail(struct device *dev, 124static ssize_t mma8452_show_samp_freq_avail(struct device *dev,