leds: lp55xx: add support for Device Tree bindings
This patch allows the lp5521 driver to be successfully probed and
initialised when Device Tree support is enabled.
Based on a patch by Gabriel Fernandez, rewritten in accordance
with review feedback.
Cc: Gabriel Fernandez <gabriel.fernandez@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Milo Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
index 229f734..365e914 100644
--- a/drivers/leds/leds-lp5523.c
+++ b/drivers/leds/leds-lp5523.c
@@ -429,12 +429,20 @@
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)
@@ -495,6 +503,7 @@
static const struct i2c_device_id lp5523_id[] = {
{ "lp5523", LP5523 },
{ "lp55231", LP55231 },
+ { "national,lp5523", 0 }, /* OF compatible */
{ }
};