[PATCH] hwmon: (emc1403) Decode fractional temperatures.

[Lars Petter Mostad <larspm@gmail.com>]

Decode all diode data low byte registers.

Signed-off-by: Lars Petter Mostad <lars.petter.mostad@appear.net>
---
 drivers/hwmon/emc1403.c | 34 ++++++++++++++++++++++++++++++++--
 1 file changed, 32 insertions(+), 2 deletions(-)

diff --git a/drivers/hwmon/emc1403.c b/drivers/hwmon/emc1403.c
index d370efd6f986..2b14db802f96 100644
--- a/drivers/hwmon/emc1403.c
+++ b/drivers/hwmon/emc1403.c
@@ -37,13 +37,43 @@ static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
 {
 	struct sensor_device_attribute *sda = to_sensor_dev_attr(attr);
 	struct thermal_data *data = dev_get_drvdata(dev);
-	unsigned int val;
+	unsigned int val, val_lowbyte;
 	int retval;
+	int idx_lowbyte;
+
+	switch (sda->index) {
+	case 0x00:
+		idx_lowbyte = 0x29;
+		break;
+	case 0x01:
+		idx_lowbyte = 0x10;
+		break;
+	case 0x23:
+	case 0x2a:
+	case 0x41:
+	case 0x43:
+	case 0x45:
+	case 0x47:
+		idx_lowbyte = sda->index + 1;
+		break;
+	default:
+		idx_lowbyte = 0;
+	}
 
 	retval = regmap_read(data->regmap, sda->index, &val);
 	if (retval < 0)
 		return retval;
-	return sprintf(buf, "%d000\n", val);
+
+	if (idx_lowbyte) {
+		retval = regmap_read(data->regmap, idx_lowbyte, &val_lowbyte);
+		if (retval < 0)
+			val_lowbyte = 0;
+	} else {
+		val_lowbyte = 0;
+	}
+
+	return sprintf(buf, "%d\n",
+		       (((val << 8) | val_lowbyte) * (u32)1000) >> 8);
 }
 
 static ssize_t bit_show(struct device *dev, struct device_attribute *attr,

base-commit: e723f6ca39fb54ae31f79b5af74fe8496308d4de
-- 
2.44.0