From: Onur Atilla <oati...@gmail.com>
"lux0_raw" file gives the raw Ambient Light Sensor (ALS) value,
before adjusting it with the calibration coefficients, whereas
"lux0_input"returns the calibrated ALS value.
Signed-off-by: Onur Atilla <oati...@gmail.com>
Signed-off-by: Andi Shyti <a...@etezian.org>
---
drivers/misc/bh1770glc.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/drivers/misc/bh1770glc.c b/drivers/misc/bh1770glc.c
index 82c30e7..d8d6526 100644
--- a/drivers/misc/bh1770glc.c
+++ b/drivers/misc/bh1770glc.c
@@ -395,6 +395,12 @@ static int bh1770_lux_read_result(struct bh1770_chip *chip)
return bh1770_lux_raw_to_adjusted(chip, chip->lux_data_raw);
}
+static int bh1770_lux_read_raw_result(struct bh1770_chip *chip)
+{
+ bh1770_lux_get_result(chip);
+ return chip->lux_data_raw;
+}
+
/*
* Chip on / off functions are called while keeping mutex except probe
* or remove phase
@@ -725,6 +731,29 @@ static ssize_t bh1770_lux_result_show(struct device *dev,
return ret;
}
+static ssize_t bh1770_lux_raw_result_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct bh1770_chip *chip = dev_get_drvdata(dev);
+ ssize_t ret;
+ long timeout;
+
+ if (pm_runtime_suspended(dev))
+ return -EIO; /* Chip is not enabled at all */
+
+ timeout = wait_event_interruptible_timeout(chip->wait,
+ !chip->lux_wait_result,
+ msecs_to_jiffies(BH1770_TIMEOUT));
+ if (!timeout)
+ return -EIO;
+
+ mutex_lock(&chip->mutex);
+ ret = sprintf(buf, "%d\n", bh1770_lux_read_raw_result(chip));
+ mutex_unlock(&chip->mutex);
+
+ return ret;
+}
+
static ssize_t bh1770_lux_range_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -1184,6 +1213,7 @@ static DEVICE_ATTR(lux0_glass_factor, S_IRUGO,
bh1770_lux_glass_factor_show,
NULL);
static DEVICE_ATTR(lux0_sensor_comp_factor, S_IRUGO, bh1770_lux_scf_show,
NULL);
static DEVICE_ATTR(lux0_input, S_IRUGO, bh1770_lux_result_show, NULL);
+static DEVICE_ATTR(lux0_raw, S_IRUGO, bh1770_lux_raw_result_show, NULL);
static DEVICE_ATTR(lux0_sensor_range, S_IRUGO, bh1770_lux_range_show, NULL);
static DEVICE_ATTR(lux0_rate, S_IRUGO | S_IWUSR, bh1770_get_lux_rate,
bh1770_set_lux_rate);
@@ -1205,6 +1235,7 @@ static struct attribute *sysfs_attrs[] = {
&dev_attr_lux0_glass_factor.attr,
&dev_attr_lux0_sensor_comp_factor.attr,
&dev_attr_lux0_input.attr,
+ &dev_attr_lux0_raw.attr,
&dev_attr_lux0_sensor_range.attr,
&dev_attr_lux0_rate.attr,
&dev_attr_lux0_rate_avail.attr,
--
1.7.10.4
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