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iio: cm32181: Change cm32181 ambient light sensor driver

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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>
This commit is contained in:
Beomho Seo 2014-02-14 10:04:00 +00:00 committed by Jonathan Cameron
parent 26c17a1c56
commit 1463a166b4
1 changed files with 8 additions and 8 deletions
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16
drivers/iio/light/cm32181.c
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@ -103,13 +103,13 @@ static int cm32181_reg_init(struct cm32181_chip *cm32181)
/** /**
* cm32181_read_als_it() - Get sensor integration time (ms) * cm32181_read_als_it() - Get sensor integration time (ms)
* @cm32181: pointer of struct cm32181 * @cm32181: pointer of struct cm32181
* @val: pointer of int to load the als_it value. * @val2: pointer of int to load the als_it value.
* *
* Report the current integartion time by millisecond. * Report the current integartion time by millisecond.
* *
* Return: IIO_VAL_INT for success, otherwise -EINVAL. * Return: IIO_VAL_INT_PLUS_MICRO for success, otherwise -EINVAL.
*/ */
static int cm32181_read_als_it(struct cm32181_chip *cm32181, int *val) static int cm32181_read_als_it(struct cm32181_chip *cm32181, int *val2)
{ {
u16 als_it; u16 als_it;
int i; int i;
@ -119,8 +119,8 @@ static int cm32181_read_als_it(struct cm32181_chip *cm32181, int *val)
als_it >>= CM32181_CMD_ALS_IT_SHIFT; als_it >>= CM32181_CMD_ALS_IT_SHIFT;
for (i = 0; i < ARRAY_SIZE(als_it_bits); i++) { for (i = 0; i < ARRAY_SIZE(als_it_bits); i++) {
if (als_it == als_it_bits[i]) { if (als_it == als_it_bits[i]) {
*val = als_it_value[i]; *val2 = als_it_value[i];
return IIO_VAL_INT; return IIO_VAL_INT_PLUS_MICRO;
} }
} }
@ -221,7 +221,7 @@ static int cm32181_read_raw(struct iio_dev *indio_dev,
*val = cm32181->calibscale; *val = cm32181->calibscale;
return IIO_VAL_INT; return IIO_VAL_INT;
case IIO_CHAN_INFO_INT_TIME: case IIO_CHAN_INFO_INT_TIME:
ret = cm32181_read_als_it(cm32181, val); ret = cm32181_read_als_it(cm32181, val2);
return ret; return ret;
} }
@ -240,7 +240,7 @@ static int cm32181_write_raw(struct iio_dev *indio_dev,
cm32181->calibscale = val; cm32181->calibscale = val;
return val; return val;
case IIO_CHAN_INFO_INT_TIME: case IIO_CHAN_INFO_INT_TIME:
ret = cm32181_write_als_it(cm32181, val); ret = cm32181_write_als_it(cm32181, val2);
return ret; return ret;
} }
@ -264,7 +264,7 @@ static ssize_t cm32181_get_it_available(struct device *dev,
n = ARRAY_SIZE(als_it_value); n = ARRAY_SIZE(als_it_value);
for (i = 0, len = 0; i < n; i++) for (i = 0, len = 0; i < n; i++)
len += sprintf(buf + len, "%d ", als_it_value[i]); len += sprintf(buf + len, "0.%06u ", als_it_value[i]);
return len + sprintf(buf + len, "\n"); return len + sprintf(buf + len, "\n");
} }