Signed-off-by: Wojciech Slenska <[email protected]>
---
Documentation/devicetree/bindings/hwmon/sht3x.txt | 16 +++++++++++++
drivers/hwmon/sht3x.c | 28 ++++++++++++++++++++---
2 files changed, 41 insertions(+), 3 deletions(-)
create mode 100644 Documentation/devicetree/bindings/hwmon/sht3x.txt
diff --git a/Documentation/devicetree/bindings/hwmon/sht3x.txt
b/Documentation/devicetree/bindings/hwmon/sht3x.txt
new file mode 100644
index 0000000..80b117e
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/sht3x.txt
@@ -0,0 +1,16 @@
+Sensirion SHT3x Humidity and Temperature Sensor
+
+Required node properties:
+- compatible: "sensirion,sht3x" or "sensirion,sts3x"
+- reg: I2C bus address of the device
+
+Optional properties:
+- sensirion,blocking-io: enable blocking mode on i2c
+- sensirion,no-high-precision: disable high accuracy
+
+Example sht3x node:
+
+sensor {
+ compatible = "sensirion,sht3x";
+ reg = <0x4a>;
+}
diff --git a/drivers/hwmon/sht3x.c b/drivers/hwmon/sht3x.c
index 370b57d..1f8b7e7 100644
--- a/drivers/hwmon/sht3x.c
+++ b/drivers/hwmon/sht3x.c
@@ -31,6 +31,7 @@
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/platform_data/sht3x.h>
+#include <linux/of.h>
/* commands (high precision mode) */
static const unsigned char sht3x_cmd_measure_blocking_hpm[] = { 0x2c, 0x06
};
@@ -699,6 +700,7 @@ static int sht3x_probe(struct i2c_client *client,
struct i2c_adapter *adap = client->adapter;
struct device *dev = &client->dev;
const struct attribute_group **attribute_groups;
+ struct device_node *np = client->dev.of_node;
/*
* we require full i2c support since the sht3x uses multi-byte read and
@@ -724,8 +726,16 @@ static int sht3x_probe(struct i2c_client *client,
data->client = client;
crc8_populate_msb(sht3x_crc8_table, SHT3X_CRC8_POLYNOMIAL);
- if (client->dev.platform_data)
- data->setup = *(struct sht3x_platform_data *)dev->platform_data;
+ if (np) {
+ if (of_property_read_bool(np, "sensirion,blocking-io"))
+ data->setup.blocking_io = true;
+ if (of_property_read_bool(np, "sensirion,no-high-precision"))
+ data->setup.high_precision = false;
+ } else {
+ if (client->dev.platform_data)
+ data->setup = *(struct sht3x_platform_data *)
+ dev->platform_data;
+ }
sht3x_select_command(data);
@@ -768,8 +778,20 @@ static const struct i2c_device_id sht3x_ids[] = {
MODULE_DEVICE_TABLE(i2c, sht3x_ids);
+#ifdef CONFIG_OF
+static const struct of_device_id sht3x_dt_match[] = {
+ { .compatible = "sensirion,sht3x" },
+ { .compatible = "sensirion,sts3x" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, sht3x_dt_match);
+#endif
+
static struct i2c_driver sht3x_i2c_driver = {
- .driver.name = "sht3x",
+ .driver = {
+ .name = "sht3x",
+ .of_match_table = of_match_ptr(sht3x_dt_match),
+ },
.probe = sht3x_probe,
.id_table = sht3x_ids,
};
--
2.7.4
