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Commit e015050c authored by Kim, Milo's avatar Kim, Milo Committed by Bryan Wu
Browse files

leds: lp5562: support the device tree feature 



The LP55xx DT structure is applicable to the LP5562 device.
The driver and documentation are updated.

Compatible property of the DT
: LP5521 and LP5223 were manufactured by National Semiconductor.
  LP5562 is a new device from Texas Instruments.

Cc: Gabriel Fernandez <gabriel.fernandez@stericsson.com>
Signed-off-by: default avatarMilo(Woogyom) Kim <milo.kim@ti.com>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarBryan Wu <cooloney@gmail.com>
parent 2dac9128

Documentation/devicetree/bindings/leds/leds-lp55xx.txt

+35 −2
Original line number Diff line number Diff line 
Binding for National Semiconductor LP55xx Led Drivers

Binding for TI/National Semiconductor LP55xx Led Drivers



Required properties:

- compatible: "national,lp5521" or "national,lp5523"

- compatible: "national,lp5521" or "national,lp5523" or "ti,lp5562"

- reg: I2C slave address

- clock-mode: Input clock mode, (0: automode, 1: internal, 2: external)
@@ -112,3 +112,36 @@ lp5523@32 { 
		max-cur = /bits/ 8 <0x20>;

	};

};



example 3) LP5562

4 channels are defined.



lp5562@30 {

	compatible = "ti,lp5562";

	reg = <0x30>;

	clock-mode = /bits/8 <2>;



	chan0 {

		chan-name = "R";

		led-cur = /bits/ 8 <0x20>;

		max-cur = /bits/ 8 <0x60>;

	};



	chan1 {

		chan-name = "G";

		led-cur = /bits/ 8 <0x20>;

		max-cur = /bits/ 8 <0x60>;

	};



	chan2 {

		chan-name = "B";

		led-cur = /bits/ 8 <0x20>;

		max-cur = /bits/ 8 <0x60>;

	};



	chan3 {

		chan-name = "W";

		led-cur = /bits/ 8 <0x20>;

		max-cur = /bits/ 8 <0x60>;

	};

};

drivers/leds/leds-lp5562.c

+14 −5
Original line number Diff line number Diff line
@@ -515,12 +515,20 @@ static int lp5562_probe(struct i2c_client *client, 
	int ret;

	struct lp55xx_chip *chip;

	struct lp55xx_led *led;

	struct lp55xx_platform_data *pdata = client->dev.platform_data;

	struct lp55xx_platform_data *pdata;

	struct device_node *np = client->dev.of_node;



	if (!pdata) {

	if (!client->dev.platform_data) {

		if (np) {

			ret = lp55xx_of_populate_pdata(&client->dev, np);

			if (ret < 0)

				return ret;

		} else {

			dev_err(&client->dev, "no platform data\n");

			return -EINVAL;

		}

	}

	pdata = client->dev.platform_data;



	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);

	if (!chip)
@@ -579,6 +587,7 @@ static int lp5562_remove(struct i2c_client *client) 


static const struct i2c_device_id lp5562_id[] = {

	{ "lp5562", 0 },

	{ "ti,lp5562", 0 }, /* OF compatible */

	{ }

};

MODULE_DEVICE_TABLE(i2c, lp5562_id);