iio: cm32181: Change cm32181 ambient light sensor driver
Integration time of cm32181 is guessed about milliseconds. But cm32181_read_als_it function return IIO_VAL_INT. So fixed to return IIO_VAL_INT_PLUS_MICRO. Next, add .write_raw_get_fmt callback function for call iio_str_to_fixpoint. v2: cm32181_write_als_id function fixed as it was. Cc: Kevin Tsai <ktsai@capellamicro.com> Signed-off-by: Beomho Seo <beomho.seo@samsung.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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@ -103,13 +103,13 @@ static int cm32181_reg_init(struct cm32181_chip *cm32181)
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/**
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* cm32181_read_als_it() - Get sensor integration time (ms)
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* @cm32181: pointer of struct cm32181
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* @val: pointer of int to load the als_it value.
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* @val2: pointer of int to load the als_it value.
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*
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* Report the current integartion time by millisecond.
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*
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* Return: IIO_VAL_INT for success, otherwise -EINVAL.
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* Return: IIO_VAL_INT_PLUS_MICRO for success, otherwise -EINVAL.
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*/
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static int cm32181_read_als_it(struct cm32181_chip *cm32181, int *val)
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static int cm32181_read_als_it(struct cm32181_chip *cm32181, int *val2)
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{
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u16 als_it;
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int i;
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@ -119,8 +119,8 @@ static int cm32181_read_als_it(struct cm32181_chip *cm32181, int *val)
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als_it >>= CM32181_CMD_ALS_IT_SHIFT;
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for (i = 0; i < ARRAY_SIZE(als_it_bits); i++) {
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if (als_it == als_it_bits[i]) {
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*val = als_it_value[i];
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return IIO_VAL_INT;
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*val2 = als_it_value[i];
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return IIO_VAL_INT_PLUS_MICRO;
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}
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}
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@ -221,7 +221,7 @@ static int cm32181_read_raw(struct iio_dev *indio_dev,
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*val = cm32181->calibscale;
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return IIO_VAL_INT;
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case IIO_CHAN_INFO_INT_TIME:
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ret = cm32181_read_als_it(cm32181, val);
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ret = cm32181_read_als_it(cm32181, val2);
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return ret;
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}
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@ -240,7 +240,7 @@ static int cm32181_write_raw(struct iio_dev *indio_dev,
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cm32181->calibscale = val;
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return val;
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case IIO_CHAN_INFO_INT_TIME:
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ret = cm32181_write_als_it(cm32181, val);
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ret = cm32181_write_als_it(cm32181, val2);
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return ret;
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}
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@ -264,7 +264,7 @@ static ssize_t cm32181_get_it_available(struct device *dev,
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n = ARRAY_SIZE(als_it_value);
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for (i = 0, len = 0; i < n; i++)
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len += sprintf(buf + len, "%d ", als_it_value[i]);
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len += sprintf(buf + len, "0.%06u ", als_it_value[i]);
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return len + sprintf(buf + len, "\n");
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}
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