diff options
| author | Slawomir Stepien <sst@poczta.fm> | 2018-11-16 10:47:21 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2018-11-16 18:32:35 +0000 |
| commit | 853bfaf43555e6352e4f9d7856603f6443292d05 (patch) | |
| tree | e5f8b8c7e1923f6f020a45a7202fb101523681f0 /drivers/iio/potentiometer | |
| parent | cc9c58ef6e0623f92edc2988c8a8ebfb63b40cea (diff) | |
iio: potentiometer: mcp4131: use of_device_get_match_data()
Try to get the device's data using OF API. In case of failure, fallback
to the spi_get_device_id() method.
Signed-off-by: Slawomir Stepien <sst@poczta.fm>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/potentiometer')
| -rw-r--r-- | drivers/iio/potentiometer/mcp4131.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/iio/potentiometer/mcp4131.c b/drivers/iio/potentiometer/mcp4131.c index b3e30db246cc..efe035ce010d 100644 --- a/drivers/iio/potentiometer/mcp4131.c +++ b/drivers/iio/potentiometer/mcp4131.c @@ -42,6 +42,7 @@ #include <linux/module.h> #include <linux/mutex.h> #include <linux/of.h> +#include <linux/of_device.h> #include <linux/spi/spi.h> #define MCP4131_WRITE (0x00 << 2) @@ -243,7 +244,7 @@ static int mcp4131_probe(struct spi_device *spi) { int err; struct device *dev = &spi->dev; - unsigned long devid = spi_get_device_id(spi)->driver_data; + unsigned long devid; struct mcp4131_data *data; struct iio_dev *indio_dev; @@ -254,7 +255,11 @@ static int mcp4131_probe(struct spi_device *spi) data = iio_priv(indio_dev); spi_set_drvdata(spi, indio_dev); data->spi = spi; - data->cfg = &mcp4131_cfg[devid]; + data->cfg = of_device_get_match_data(&spi->dev); + if (!data->cfg) { + devid = spi_get_device_id(spi)->driver_data; + data->cfg = &mcp4131_cfg[devid]; + } mutex_init(&data->lock); @@ -273,7 +278,6 @@ static int mcp4131_probe(struct spi_device *spi) return 0; } -#if defined(CONFIG_OF) static const struct of_device_id mcp4131_dt_ids[] = { { .compatible = "microchip,mcp4131-502", .data = &mcp4131_cfg[MCP413x_502] }, @@ -406,7 +410,6 @@ static const struct of_device_id mcp4131_dt_ids[] = { {} }; MODULE_DEVICE_TABLE(of, mcp4131_dt_ids); -#endif /* CONFIG_OF */ static const struct spi_device_id mcp4131_id[] = { { "mcp4131-502", MCP413x_502 }, |