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Commit 1463a166 authored by Beomho Seo's avatar Beomho Seo Committed by Jonathan Cameron
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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: default avatarBeomho Seo <beomho.seo@samsung.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 26c17a1c

drivers/iio/light/cm32181.c

+8 −8
Original line number Diff line number Diff line
@@ -103,13 +103,13 @@ static int cm32181_reg_init(struct cm32181_chip *cm32181) 
/**

 *  cm32181_read_als_it() - Get sensor integration time (ms)

 *  @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.

 *

 *  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;

	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;

	for (i = 0; i < ARRAY_SIZE(als_it_bits); i++) {

		if (als_it == als_it_bits[i]) {

			*val = als_it_value[i];

			return IIO_VAL_INT;

			*val2 = als_it_value[i];

			return IIO_VAL_INT_PLUS_MICRO;

		}

	}
@@ -221,7 +221,7 @@ static int cm32181_read_raw(struct iio_dev *indio_dev, 
		*val = cm32181->calibscale;

		return IIO_VAL_INT;

	case IIO_CHAN_INFO_INT_TIME:

		ret = cm32181_read_als_it(cm32181, val);

		ret = cm32181_read_als_it(cm32181, val2);

		return ret;

	}
@@ -240,7 +240,7 @@ static int cm32181_write_raw(struct iio_dev *indio_dev, 
		cm32181->calibscale = val;

		return val;

	case IIO_CHAN_INFO_INT_TIME:

		ret = cm32181_write_als_it(cm32181, val);

		ret = cm32181_write_als_it(cm32181, val2);

		return ret;

	}
@@ -264,7 +264,7 @@ static ssize_t cm32181_get_it_available(struct device *dev, 


	n = ARRAY_SIZE(als_it_value);

	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");

}