| Message ID | 20200712044411.23323-1-chris.ruehl@gtsys.com.hk |
|---|---|
| Headers | show |
| Series | shtc1: add support for device tree bindings | expand |
On 12/7/2020 12:44 pm, Chris Ruehl wrote: > 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> Received new PCBA from the factory today, with the chip installed. Probe working, the measurement of temperature and humidity is correct. root@pcba0:~# cat /sys/devices/platform/ff110000.i2c/i2c-1/1-0070/hwmon/hwmon1/temp1_input 42334 root@pcba0:~# cat /sys/devices/platform/ff110000.i2c/i2c-1/1-0070/hwmon/hwmon1/humidity1_input 38128 Tested-by: Chris Ruehl <chris.ruehl@gtsys.com.hk> > --- > drivers/hwmon/shtc1.c | 25 ++++++++++++++++++++++--- > 1 file changed, 22 insertions(+), 3 deletions(-) > > diff --git a/drivers/hwmon/shtc1.c b/drivers/hwmon/shtc1.c > index a0078ccede03..7993a5ff8768 100644 > --- a/drivers/hwmon/shtc1.c > +++ b/drivers/hwmon/shtc1.c > @@ -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 }; > @@ -196,6 +197,7 @@ static int shtc1_probe(struct i2c_client *client, > enum shtcx_chips chip = id->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"); > @@ -233,8 +235,14 @@ 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); > > @@ -257,8 +265,19 @@ 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 = shtc1_probe, > .id_table = shtc1_id, > }; >
Add support for DTS bindings to the shtc driver The patches add the compatible table and of_property_read_bool to the shtc1.c. Newly created Yaml document has been released to the Documentation/devicetree/hwmon/sensirion,shtc1.yaml Signed-off-by: Chris Ruehl <chris.ruehl@gtsys.com.hk> --- Version 6 fix dt_binding_check: missing ';' in examples Version 5 devicetree/driver-source: name conversion sensirion,low-precision sensirion,blocking-io use const: 0x70 with the reg: Version 4 Fix errors report by make dt_binding_check (devicetree) Set maintainers for the yaml document to my own. Version 3 Fix errors report with checkpatch.pl Correct logic, add (!) when check for sensirion,low_precision Version 2 remove the #ifdef CONFIG_OF ignore platform data if dev->of_node is valid use boolean only therefor use sensirion,low_precise to fit the logic add missing driver.of_match_table entry Version 1 initial version