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: Milo(Woogyom) Kim <milo.kim@ti.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
diff --git a/Documentation/devicetree/bindings/leds/leds-lp55xx.txt b/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
index 1ed6bb0..d517688 100644
--- a/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
+++ b/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
@@ -1,7 +1,7 @@
-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 @@
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>;
+ };
+};
diff --git a/drivers/leds/leds-lp5562.c b/drivers/leds/leds-lp5562.c
index 513f239..e53bcb8 100644
--- a/drivers/leds/leds-lp5562.c
+++ b/drivers/leds/leds-lp5562.c
@@ -515,12 +515,20 @@
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) {
- dev_err(&client->dev, "no platform data\n");
- return -EINVAL;
+ 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 const struct i2c_device_id lp5562_id[] = {
{ "lp5562", 0 },
+ { "ti,lp5562", 0 }, /* OF compatible */
{ }
};
MODULE_DEVICE_TABLE(i2c, lp5562_id);