When hardware design introduces significant sensor data noise,
performance can be improved by adjusting register settings.
Signed-off-by: Yasin Lee <yasin.lee.x@xxxxxxxxx>
---
drivers/iio/proximity/hx9023s.c | 45 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/drivers/iio/proximity/hx9023s.c b/drivers/iio/proximity/hx9023s.c
index 8b9f84400e00..8f7995816545 100644
--- a/drivers/iio/proximity/hx9023s.c
+++ b/drivers/iio/proximity/hx9023s.c
@@ -582,6 +582,47 @@ static int hx9023s_ch_en(struct hx9023s_data *data, u8 ch_id, bool en)
return regmap_write(data->regmap, HX9023S_CH_NUM_CFG, data->ch_en_stat);
}
+static int hx9023s_performance_tuning(struct hx9023s_data *data)
+{
+ int ret;
+ u32 i, len;
+ u8 addr_val[512];
+ struct device *dev = regmap_get_device(data->regmap);
+ struct fwnode_handle *fwnode = dev_fwnode(dev);
+
+ ret = fwnode_property_count_u8(fwnode, "tyhx,performance-tuning");
+ if (ret < 2 || ret > 512) {
+ if (ret < 0) {
+ dev_err(dev, "Failed to get length of property\n");
+ return ret;
+ }
+ dev_err(dev, "The property requires between 2 and 512 elements\n");
+ return -EINVAL;
+ }
+
+ len = ret;
+ if (len % 2 != 0) {
+ dev_err(dev, "The property must contain an even number of elements\n");
+ return -EINVAL;
+ }
+
+ ret = fwnode_property_read_u8_array(fwnode, "tyhx,performance-tuning", addr_val, len);
+ if (ret < 0) {
+ dev_err(dev, "Failed to read property\n");
+ return ret;
+ }
+
+ for (i = 0; i < len; i += 2) {
+ ret = regmap_write(data->regmap, addr_val[i], addr_val[i + 1]);
+ if (ret) {
+ dev_err(dev, "Failed to write register\n");
+ return ret;
+ }
+ }
+
+ return ret;
+}
+
static int hx9023s_property_get(struct hx9023s_data *data)
{
struct device *dev = regmap_get_device(data->regmap);
@@ -1045,6 +1086,10 @@ static int hx9023s_probe(struct i2c_client *client)
if (ret)
return dev_err_probe(dev, ret, "channel config failed\n");
+ ret = hx9023s_performance_tuning(data);
+ if (ret)
+ dev_warn(dev, "performance tuning not configured\n");
+
ret = regcache_sync(data->regmap);
if (ret)
return dev_err_probe(dev, ret, "regcache sync failed\n");
--
2.43.0
