iio: lps331ap: Modify in_temp_scale calculation way

This patch modifies the way how the in_temp_scale output value is
calculated. With this implementation it is more clear how the value
is obtained.

Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/iio/pressure/st_pressure_core.c b/drivers/iio/pressure/st_pressure_core.c
index 81e2d5b030a6..43b3a55e1130 100644
--- a/drivers/iio/pressure/st_pressure_core.c
+++ b/drivers/iio/pressure/st_pressure_core.c
@@ -31,6 +31,9 @@
 #define ST_PRESS_LSB_PER_MBAR                   4096UL
 #define ST_PRESS_KPASCAL_NANO_SCALE             (100000000UL / \
                                                  ST_PRESS_LSB_PER_MBAR)
+#define ST_PRESS_LSB_PER_CELSIUS                480UL
+#define ST_PRESS_CELSIUS_NANO_SCALE             (1000000000UL / \
+                                                 ST_PRESS_LSB_PER_CELSIUS)
 #define ST_PRESS_NUMBER_DATA_CHANNELS           1
 
 /* DEFAULT VALUE FOR SENSORS */
@@ -53,8 +56,8 @@
 #define ST_PRESS_1_FS_ADDR                      0x23
 #define ST_PRESS_1_FS_MASK                      0x30
 #define ST_PRESS_1_FS_AVL_1260_VAL              0x00
-#define ST_PRESS_1_FS_AVL_TEMP_GAIN             2083000
 #define ST_PRESS_1_FS_AVL_1260_GAIN             ST_PRESS_KPASCAL_NANO_SCALE
+#define ST_PRESS_1_FS_AVL_TEMP_GAIN             ST_PRESS_CELSIUS_NANO_SCALE
 #define ST_PRESS_1_BDU_ADDR                     0x20
 #define ST_PRESS_1_BDU_MASK                     0x04
 #define ST_PRESS_1_DRDY_IRQ_ADDR                0x22