@@ -335,7 +335,7 @@ static int bme680_read_calib(struct bme680_data *data,
* output value of "3233" represents 32.33 DegC.
*/
static s16 bme680_compensate_temp(struct bme680_data *data,
- s32 adc_temp)
+ u32 adc_temp)
{
struct bme680_calib *calib = &data->bme680;
s64 var1, var2, var3;
@@ -345,7 +345,7 @@ static s16 bme680_compensate_temp(struct bme680_data *data,
if (!calib->par_t2)
bme680_read_calib(data, calib);
- var1 = (adc_temp >> 3) - ((s32)calib->par_t1 << 1);
+ var1 = ((s32)adc_temp >> 3) - ((s32)calib->par_t1 << 1);
var2 = (var1 * calib->par_t2) >> 11;
var3 = ((var1 >> 1) * (var1 >> 1)) >> 12;
var3 = (var3 * ((s32)calib->par_t3 << 4)) >> 14;
@@ -410,9 +410,9 @@ static u32 bme680_compensate_humid(struct bme680_data *data,
s32 var1, var2, var3, var4, var5, var6, temp_scaled, calc_hum;
temp_scaled = (data->t_fine * 5 + 128) >> 8;
- var1 = (adc_humid - ((s32) ((s32) calib->par_h1 * 16))) -
- (((temp_scaled * (s32) calib->par_h3) / 100) >> 1);
- var2 = ((s32) calib->par_h2 *
+ var1 = (adc_humid - (((s32)calib->par_h1 * 16))) -
+ (((temp_scaled * calib->par_h3) / 100) >> 1);
+ var2 = (calib->par_h2 *
(((temp_scaled * calib->par_h4) / 100) +
(((temp_scaled * ((temp_scaled * calib->par_h5) / 100))
>> 6) / 100) + (1 << 14))) >> 10;
@@ -637,7 +637,7 @@ static int bme680_read_temp(struct bme680_data *data, int *val)
struct device *dev = regmap_get_device(data->regmap);
int ret;
__be32 tmp = 0;
- s32 adc_temp;
+ u32 adc_temp;
s16 comp_temp;
/* set forced mode to trigger measurement */
@@ -681,7 +681,7 @@ static int bme680_read_press(struct bme680_data *data,
struct device *dev = regmap_get_device(data->regmap);
int ret;
__be32 tmp = 0;
- s32 adc_press;
+ u32 adc_press;
/* Read and compensate temperature to get a reading of t_fine */
ret = bme680_read_temp(data, NULL);
@@ -713,7 +713,7 @@ static int bme680_read_humid(struct bme680_data *data,
struct device *dev = regmap_get_device(data->regmap);
int ret;
__be16 tmp = 0;
- s32 adc_humidity;
+ u16 adc_humidity;
u32 comp_humidity;
/* Read and compensate temperature to get a reading of t_fine */
Delete any redundant casts in the code and use unsigned integers for the raw adc values. Signed-off-by: Vasileios Amoiridis <vassilisamir@gmail.com> --- drivers/iio/chemical/bme680_core.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-)