Move bit-shift in hts221_write_with_mask() instead of coding
the shift depth in the configured value. That change will be necessary
to fix an issue in device power-down procedure
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@xxxxxx>
---
drivers/iio/humidity/hts221_core.c | 74 +++++++++++++++++---------------------
1 file changed, 32 insertions(+), 42 deletions(-)
diff --git a/drivers/iio/humidity/hts221_core.c b/drivers/iio/humidity/hts221_core.c
index a56da3999e00..f5181e4e1eff 100644
--- a/drivers/iio/humidity/hts221_core.c
+++ b/drivers/iio/humidity/hts221_core.c
@@ -32,30 +32,12 @@
#define HTS221_HUMIDITY_AVG_MASK 0x07
#define HTS221_TEMP_AVG_MASK 0x38
-#define HTS221_ODR_MASK 0x87
+#define HTS221_ODR_MASK 0x03
#define HTS221_BDU_MASK BIT(2)
+#define HTS221_ENABLE_MASK BIT(7)
#define HTS221_DRDY_MASK BIT(2)
-#define HTS221_ENABLE_SENSOR BIT(7)
-
-#define HTS221_HUMIDITY_AVG_4 0x00 /* 0.4 %RH */
-#define HTS221_HUMIDITY_AVG_8 0x01 /* 0.3 %RH */
-#define HTS221_HUMIDITY_AVG_16 0x02 /* 0.2 %RH */
-#define HTS221_HUMIDITY_AVG_32 0x03 /* 0.15 %RH */
-#define HTS221_HUMIDITY_AVG_64 0x04 /* 0.1 %RH */
-#define HTS221_HUMIDITY_AVG_128 0x05 /* 0.07 %RH */
-#define HTS221_HUMIDITY_AVG_256 0x06 /* 0.05 %RH */
-#define HTS221_HUMIDITY_AVG_512 0x07 /* 0.03 %RH */
-
-#define HTS221_TEMP_AVG_2 0x00 /* 0.08 degC */
-#define HTS221_TEMP_AVG_4 0x08 /* 0.05 degC */
-#define HTS221_TEMP_AVG_8 0x10 /* 0.04 degC */
-#define HTS221_TEMP_AVG_16 0x18 /* 0.03 degC */
-#define HTS221_TEMP_AVG_32 0x20 /* 0.02 degC */
-#define HTS221_TEMP_AVG_64 0x28 /* 0.015 degC */
-#define HTS221_TEMP_AVG_128 0x30 /* 0.01 degC */
-#define HTS221_TEMP_AVG_256 0x38 /* 0.007 degC */
/* calibration registers */
#define HTS221_REG_0RH_CAL_X_H 0x36
@@ -90,28 +72,28 @@ static const struct hts221_avg hts221_avg_list[] = {
.addr = HTS221_REG_AVG_ADDR,
.mask = HTS221_HUMIDITY_AVG_MASK,
.avg_avl = {
- { 4, HTS221_HUMIDITY_AVG_4 },
- { 8, HTS221_HUMIDITY_AVG_8 },
- { 16, HTS221_HUMIDITY_AVG_16 },
- { 32, HTS221_HUMIDITY_AVG_32 },
- { 64, HTS221_HUMIDITY_AVG_64 },
- { 128, HTS221_HUMIDITY_AVG_128 },
- { 256, HTS221_HUMIDITY_AVG_256 },
- { 512, HTS221_HUMIDITY_AVG_512 },
+ { 4, 0x0 }, /* 0.4 %RH */
+ { 8, 0x1 }, /* 0.3 %RH */
+ { 16, 0x2 }, /* 0.2 %RH */
+ { 32, 0x3 }, /* 0.15 %RH */
+ { 64, 0x4 }, /* 0.1 %RH */
+ { 128, 0x5 }, /* 0.07 %RH */
+ { 256, 0x6 }, /* 0.05 %RH */
+ { 512, 0x7 }, /* 0.03 %RH */
},
},
{
.addr = HTS221_REG_AVG_ADDR,
.mask = HTS221_TEMP_AVG_MASK,
.avg_avl = {
- { 2, HTS221_TEMP_AVG_2 },
- { 4, HTS221_TEMP_AVG_4 },
- { 8, HTS221_TEMP_AVG_8 },
- { 16, HTS221_TEMP_AVG_16 },
- { 32, HTS221_TEMP_AVG_32 },
- { 64, HTS221_TEMP_AVG_64 },
- { 128, HTS221_TEMP_AVG_128 },
- { 256, HTS221_TEMP_AVG_256 },
+ { 2, 0x0 }, /* 0.08 degC */
+ { 4, 0x1 }, /* 0.05 degC */
+ { 8, 0x2 }, /* 0.04 degC */
+ { 16, 0x3 }, /* 0.03 degC */
+ { 32, 0x4 }, /* 0.02 degC */
+ { 64, 0x5 }, /* 0.015 degC */
+ { 128, 0x6 }, /* 0.01 degC */
+ { 256, 0x7 }, /* 0.007 degC */
},
},
};
@@ -166,7 +148,7 @@ static int hts221_write_with_mask(struct hts221_hw *hw, u8 addr, u8 mask,
goto unlock;
}
- data = (data & ~mask) | (val & mask);
+ data = (data & ~mask) | ((val << __ffs(mask)) & mask);
err = hw->tf->write(hw->dev, addr, sizeof(data), &data);
if (err < 0)
@@ -201,11 +183,10 @@ static int hts221_check_whoami(struct hts221_hw *hw)
int hts221_config_drdy(struct hts221_hw *hw, bool enable)
{
- u8 val = enable ? BIT(2) : 0;
int err;
err = hts221_write_with_mask(hw, HTS221_REG_CNTRL3_ADDR,
- HTS221_DRDY_MASK, val);
+ HTS221_DRDY_MASK, enable);
return err < 0 ? err : 0;
}
@@ -213,7 +194,6 @@ int hts221_config_drdy(struct hts221_hw *hw, bool enable)
static int hts221_update_odr(struct hts221_hw *hw, u8 odr)
{
int i, err;
- u8 val;
for (i = 0; i < ARRAY_SIZE(hts221_odr_table); i++)
if (hts221_odr_table[i].hz == odr)
@@ -222,9 +202,19 @@ static int hts221_update_odr(struct hts221_hw *hw, u8 odr)
if (i == ARRAY_SIZE(hts221_odr_table))
return -EINVAL;
- val = HTS221_ENABLE_SENSOR | HTS221_BDU_MASK | hts221_odr_table[i].val;
+ /* enable Block Data Update */
+ err = hts221_write_with_mask(hw, HTS221_REG_CNTRL1_ADDR,
+ HTS221_BDU_MASK, 1);
+ if (err < 0)
+ return err;
+
+ err = hts221_write_with_mask(hw, HTS221_REG_CNTRL1_ADDR,
+ HTS221_ODR_MASK, hts221_odr_table[i].val);
+ if (err < 0)
+ return err;
+
err = hts221_write_with_mask(hw, HTS221_REG_CNTRL1_ADDR,
- HTS221_ODR_MASK, val);
+ HTS221_ENABLE_MASK, 1);
if (err < 0)
return err;
--
2.13.1
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