linux-kernel - [PATCH] iio: light: Add raw attribute

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Date:   Thu, 11 Aug 2022 15:44:43 +0530
From:   Shreeya Patel <shreeya.patel@...labora.com>
To:     jic23@...nel.org, lars@...afoo.de
Cc:     linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        krisman@...labora.com, kernel@...labora.com,
        alvaro.soliverez@...labora.com,
        Shreeya Patel <shreeya.patel@...labora.com>
Subject: [PATCH] iio: light: Add raw attribute

Add IIO_CHAN_INFO_RAW to the mask to be able to read raw values
from the light sensor.

Signed-off-by: Shreeya Patel <shreeya.patel@...labora.com>
---
 drivers/iio/light/ltrf216a.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/iio/light/ltrf216a.c b/drivers/iio/light/ltrf216a.c
index e6e24e70d2b9..a717bf99bd2a 100644
--- a/drivers/iio/light/ltrf216a.c
+++ b/drivers/iio/light/ltrf216a.c
@@ -93,6 +93,7 @@ static const struct iio_chan_spec ltrf216a_channels[] = {
 	{
 		.type = IIO_LIGHT,
 		.info_mask_separate =
+			BIT(IIO_CHAN_INFO_RAW) |
 			BIT(IIO_CHAN_INFO_PROCESSED) |
 			BIT(IIO_CHAN_INFO_INT_TIME),
 		.info_mask_separate_available =
@@ -259,6 +260,18 @@ static int ltrf216a_read_raw(struct iio_dev *indio_dev,
 	int ret;
 
 	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = ltrf216a_set_power_state(data, true);
+		if (ret)
+			return ret;
+		mutex_lock(&data->lock);
+		ret = ltrf216a_read_data(data, LTRF216A_ALS_DATA_0);
+		mutex_unlock(&data->lock);
+		if (ret < 0)
+			return ret;
+		*val = ret;
+		ltrf216a_set_power_state(data, false);
+		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_PROCESSED:
 		mutex_lock(&data->lock);
 		ret = ltrf216a_get_lux(data);
-- 
2.30.2