Unverified Commit 62f7f3ec authored by Sven Van Asbroeck's avatar Sven Van Asbroeck Committed by Mark Brown
Browse files

tps6105x: add optional devicetree support 



This driver currently requires platform data to specify the
operational mode and regulator init data (in case of regulator
mode).

Optionally specify the operational mode by looking at the name
of the devicetree child node.

Example: put chip in regulator mode:

i2c0 {
	tps61052@33 {
		compatible = "ti,tps61052";
		reg = <0x33>;

		regulator {
                            regulator-min-microvolt = <5000000>;
                            regulator-max-microvolt = <5000000>;
                            regulator-always-on;
		};
	};
};

Tree: linux-next
Signed-off-by: default avatarSven Van Asbroeck <TheSven73@gmail.com>
Link: https://lore.kernel.org/r/20191119154611.29625-2-TheSven73@gmail.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 1d7c4c11

drivers/mfd/tps6105x.c

+31 −3
Original line number Diff line number Diff line
@@ -91,6 +91,32 @@ static int tps6105x_add_device(struct tps6105x *tps6105x, 
			       PLATFORM_DEVID_AUTO, cell, 1, NULL, 0, NULL);

}



static struct tps6105x_platform_data *tps6105x_parse_dt(struct device *dev)

{

	struct device_node *np = dev->of_node;

	struct tps6105x_platform_data *pdata;

	struct device_node *child;



	if (!np)

		return ERR_PTR(-EINVAL);

	if (of_get_available_child_count(np) > 1) {

		dev_err(dev, "cannot support multiple operational modes");

		return ERR_PTR(-EINVAL);

	}

	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);

	if (!pdata)

		return ERR_PTR(-ENOMEM);

	pdata->mode = TPS6105X_MODE_SHUTDOWN;

	for_each_available_child_of_node(np, child) {

		if (child->name && !of_node_cmp(child->name, "regulator"))

			pdata->mode = TPS6105X_MODE_VOLTAGE;

		else if (child->name && !of_node_cmp(child->name, "led"))

			pdata->mode = TPS6105X_MODE_TORCH;

	}



	return pdata;

}



static int tps6105x_probe(struct i2c_client *client,

			const struct i2c_device_id *id)

{
@@ -99,9 +125,11 @@ static int tps6105x_probe(struct i2c_client *client, 
	int ret;



	pdata = dev_get_platdata(&client->dev);

	if (!pdata) {

		dev_err(&client->dev, "missing platform data\n");

		return -ENODEV;

	if (!pdata)

		pdata = tps6105x_parse_dt(&client->dev);

	if (IS_ERR(pdata)) {

		dev_err(&client->dev, "No platform data or DT found");

		return PTR_ERR(pdata);

	}



	tps6105x = devm_kmalloc(&client->dev, sizeof(*tps6105x), GFP_KERNEL);

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