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hwmon: shtc1: add support for device tree bindings 

Add support for DTS bindings for the sensirion shtc1,shtw1 and shtc3.

Signed-off-by: Chris Ruehl <chris.ruehl@gtsys.com.hk>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20200815012227.32538-2-chris.ruehl@gtsys.com.hk
[groeck: Resolved conflicts]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Chris Ruehl 2020-08-15 09:22:26 +08:00 committed by Guenter Roeck
parent 65b2aad069
commit be7373b60d
1 changed files with 22 additions and 3 deletions
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25
drivers/hwmon/shtc1.c
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@ -14,6 +14,7 @@
#include <linux/err.h>
#include <linux/delay.h>
#include <linux/platform_data/shtc1.h>
#include <linux/of.h>
/* commands (high precision mode) */
static const unsigned char shtc1_cmd_measure_blocking_hpm[] = { 0x7C, 0xA2 };
@ -197,6 +198,7 @@ static int shtc1_probe(struct i2c_client *client)
enum shtcx_chips chip = i2c_match_id(shtc1_id, client)->driver_data;
struct i2c_adapter *adap = client->adapter;
struct device *dev = &client->dev;
struct device_node *np = dev->of_node;
if (!i2c_check_functionality(adap, I2C_FUNC_I2C)) {
dev_err(dev, "plain i2c transactions not supported\n");
@ -234,8 +236,14 @@ static int shtc1_probe(struct i2c_client *client)
data->client = client;
data->chip = chip;
if (client->dev.platform_data)
data->setup = *(struct shtc1_platform_data *)dev->platform_data;
if (np) {
data->setup.blocking_io = of_property_read_bool(np, "sensirion,blocking-io");
data->setup.high_precision = !of_property_read_bool(np, "sensicon,low-precision");
} else {
if (client->dev.platform_data)
data->setup = *(struct shtc1_platform_data *)dev->platform_data;
}
shtc1_select_command(data);
mutex_init(&data->update_lock);
@ -258,8 +266,19 @@ static const struct i2c_device_id shtc1_id[] = {
};
MODULE_DEVICE_TABLE(i2c, shtc1_id);
static const struct of_device_id shtc1_of_match[] = {
{ .compatible = "sensirion,shtc1" },
{ .compatible = "sensirion,shtw1" },
{ .compatible = "sensirion,shtc3" },
{ }
};
MODULE_DEVICE_TABLE(of, shtc1_of_match);
static struct i2c_driver shtc1_i2c_driver = {
.driver.name = "shtc1",
.driver = {
.name = "shtc1",
.of_match_table = shtc1_of_match,
},
.probe_new = shtc1_probe,
.id_table = shtc1_id,
};