Messages in this thread Patch in this message | | | From | Shrirang Bagul <> | Subject | [PATCH 1/3] iio: st_sensors: match sensors using ACPI handle | Date | Thu, 24 Nov 2016 13:33:43 +0800 |
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Add support to match st sensors using information passed from ACPI DST tables.
Signed-off-by: Shrirang Bagul <shrirang.bagul@canonical.com> --- drivers/iio/common/st_sensors/st_sensors_i2c.c | 20 ++++++++++++++++++++ include/linux/iio/common/st_sensors_i2c.h | 9 +++++++++ 2 files changed, 29 insertions(+)
diff --git a/drivers/iio/common/st_sensors/st_sensors_i2c.c b/drivers/iio/common/st_sensors/st_sensors_i2c.c index b43aa36..c83df4d 100644 --- a/drivers/iio/common/st_sensors/st_sensors_i2c.c +++ b/drivers/iio/common/st_sensors/st_sensors_i2c.c @@ -13,6 +13,7 @@ #include <linux/slab.h> #include <linux/iio/iio.h> #include <linux/of_device.h> +#include <linux/acpi.h> #include <linux/iio/common/st_sensors_i2c.h> @@ -107,6 +108,25 @@ void st_sensors_of_i2c_probe(struct i2c_client *client, EXPORT_SYMBOL(st_sensors_of_i2c_probe); #endif +#ifdef CONFIG_ACPI +int st_sensors_match_acpi_device(struct device *dev) +{ + const struct acpi_device_id *acpi_id; + kernel_ulong_t driver_data = 0; + + if (ACPI_HANDLE(dev)) { + acpi_id = acpi_match_device(dev->driver->acpi_match_table, dev); + if (!acpi_id) { + dev_err(dev, "No driver data\n"); + return -EINVAL; + } + driver_data = acpi_id->driver_data; + } + return driver_data; +} +EXPORT_SYMBOL(st_sensors_match_acpi_device); +#endif + MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); MODULE_DESCRIPTION("STMicroelectronics ST-sensors i2c driver"); MODULE_LICENSE("GPL v2"); diff --git a/include/linux/iio/common/st_sensors_i2c.h b/include/linux/iio/common/st_sensors_i2c.h index 1796af0..254de3c 100644 --- a/include/linux/iio/common/st_sensors_i2c.h +++ b/include/linux/iio/common/st_sensors_i2c.h @@ -28,4 +28,13 @@ static inline void st_sensors_of_i2c_probe(struct i2c_client *client, } #endif +#ifdef CONFIG_ACPI +int st_sensors_match_acpi_device(struct device *dev); +#else +static inline int st_sensors_match_acpi_device(struct device *dev) +{ + return -ENODEV; +} +#endif + #endif /* ST_SENSORS_I2C_H */ -- 2.9.3
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