diff options
Diffstat (limited to 'drivers/iio/common')
| -rw-r--r-- | drivers/iio/common/st_sensors/st_sensors_core.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/drivers/iio/common/st_sensors/st_sensors_core.c b/drivers/iio/common/st_sensors/st_sensors_core.c index 30fb6407fad..8a4ec00a91a 100644 --- a/drivers/iio/common/st_sensors/st_sensors_core.c +++ b/drivers/iio/common/st_sensors/st_sensors_core.c @@ -14,8 +14,8 @@ #include <linux/delay.h> #include <linux/iio/iio.h> #include <linux/regulator/consumer.h> +#include <linux/of.h> #include <asm/unaligned.h> - #include <linux/iio/common/st_sensors.h> @@ -265,14 +265,47 @@ static int st_sensors_set_drdy_int_pin(struct iio_dev *indio_dev, return 0; } +#ifdef CONFIG_OF +static struct st_sensors_platform_data *st_sensors_of_probe(struct device *dev, + struct st_sensors_platform_data *defdata) +{ + struct st_sensors_platform_data *pdata; + struct device_node *np = dev->of_node; + u32 val; + + if (!np) + return NULL; + + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!of_property_read_u32(np, "st,drdy-int-pin", &val) && (val <= 2)) + pdata->drdy_int_pin = (u8) val; + else + pdata->drdy_int_pin = defdata ? defdata->drdy_int_pin : 1; + + return pdata; +} +#else +static struct st_sensors_platform_data *st_sensors_of_probe(struct device *dev, + struct st_sensors_platform_data *defdata) +{ + return NULL; +} +#endif + int st_sensors_init_sensor(struct iio_dev *indio_dev, struct st_sensors_platform_data *pdata) { struct st_sensor_data *sdata = iio_priv(indio_dev); + struct st_sensors_platform_data *of_pdata; int err = 0; mutex_init(&sdata->tb.buf_lock); + /* If OF/DT pdata exists, it will take precedence of anything else */ + of_pdata = st_sensors_of_probe(indio_dev->dev.parent, pdata); + if (of_pdata) + pdata = of_pdata; + if (pdata) err = st_sensors_set_drdy_int_pin(indio_dev, pdata); |