iio: dac: mcp4725: add devicetree support (88e39a88) · Commits · e / devices / android_kernel_oneplus_sm8150

drivers/iio/dac/mcp4725.c

+37 −6

Original line number	Diff line number	Diff line
		@@ -19,6 +19,7 @@
		#include <linux/err.h>
		#include <linux/delay.h>
		#include <linux/regulator/consumer.h>
		#include <linux/of.h>

		#include <linux/iio/iio.h>
		#include <linux/iio/sysfs.h>
		@@ -364,22 +365,41 @@ static const struct iio_info mcp4725_info = {
		.driver_module = THIS_MODULE,
		};

		#ifdef CONFIG_OF
		static int mcp4725_probe_dt(struct device *dev,
		struct mcp4725_platform_data *pdata)
		{
		struct device_node *np = dev->of_node;

		if (!np)
		return -ENODEV;

		/* check if is the vref-supply defined */
		pdata->use_vref = of_property_read_bool(np, "vref-supply");
		pdata->vref_buffered =
		of_property_read_bool(np, "microchip,vref-buffered");

		return 0;
		}
		#else
		static int mcp4725_probe_dt(struct device *dev,
		struct mcp4725_platform_data *platform_data)
		{
		return -ENODEV;
		}
		#endif

		static int mcp4725_probe(struct i2c_client *client,
		const struct i2c_device_id *id)
		{
		struct mcp4725_data *data;
		struct iio_dev *indio_dev;
		struct mcp4725_platform_data *pdata = dev_get_platdata(&client->dev);
		struct mcp4725_platform_data *pdata, pdata_dt;
		u8 inbuf[4];
		u8 pd;
		u8 ref;
		int err;

		if (!pdata) {
		dev_err(&client->dev, "invalid platform data");
		return -EINVAL;
		}

		indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
		if (indio_dev == NULL)
		return -ENOMEM;
		@@ -387,6 +407,17 @@ static int mcp4725_probe(struct i2c_client *client,
		i2c_set_clientdata(client, indio_dev);
		data->client = client;
		data->id = id->driver_data;
		pdata = dev_get_platdata(&client->dev);

		if (!pdata) {
		err = mcp4725_probe_dt(&client->dev, &pdata_dt);
		if (err) {
		dev_err(&client->dev,
		"invalid platform or devicetree data");
		return err;
		}
		pdata = &pdata_dt;
		}

		if (data->id == MCP4725 && pdata->use_vref) {
		dev_err(&client->dev,