diff options
Diffstat (limited to 'drivers/thermal/qcom/tsens-v2.c')
| -rw-r--r-- | drivers/thermal/qcom/tsens-v2.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/thermal/qcom/tsens-v2.c b/drivers/thermal/qcom/tsens-v2.c index 908e3dcb2d5c..44da02f594ac 100644 --- a/drivers/thermal/qcom/tsens-v2.c +++ b/drivers/thermal/qcom/tsens-v2.c @@ -5,19 +5,20 @@ */ #include <linux/regmap.h> +#include <linux/bitops.h> #include "tsens.h" #define STATUS_OFFSET 0xa0 #define LAST_TEMP_MASK 0xfff #define STATUS_VALID_BIT BIT(21) -#define CODE_SIGN_BIT BIT(11) static int get_temp_tsens_v2(struct tsens_device *tmdev, int id, int *temp) { struct tsens_sensor *s = &tmdev->sensor[id]; u32 code; unsigned int status_reg; - int last_temp = 0, last_temp2 = 0, last_temp3 = 0, ret; + u32 last_temp = 0, last_temp2 = 0, last_temp3 = 0; + int ret; status_reg = tmdev->tm_offset + STATUS_OFFSET + s->hw_id * 4; ret = regmap_read(tmdev->map, status_reg, &code); @@ -54,12 +55,8 @@ static int get_temp_tsens_v2(struct tsens_device *tmdev, int id, int *temp) else if (last_temp2 == last_temp3) last_temp = last_temp3; done: - /* Code sign bit is the sign extension for a negative value */ - if (last_temp & CODE_SIGN_BIT) - last_temp |= ~CODE_SIGN_BIT; - - /* Temperatures are in deciCelicius */ - *temp = last_temp * 100; + /* Convert temperature from deciCelsius to milliCelsius */ + *temp = sign_extend32(last_temp, fls(LAST_TEMP_MASK) - 1) * 100; return 0; } |