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path: root/drivers/leds/leds-lp55xx-common.c
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Diffstat (limited to 'drivers/leds/leds-lp55xx-common.c')
-rw-r--r--drivers/leds/leds-lp55xx-common.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/leds/leds-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c
index 1c716ecfa817..05a854c0d9b2 100644
--- a/drivers/leds/leds-lp55xx-common.c
+++ b/drivers/leds/leds-lp55xx-common.c
@@ -12,6 +12,7 @@
* Derived from leds-lp5521.c, leds-lp5523.c
*/
+#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/leds.h>
#include <linux/module.h>
@@ -54,6 +55,39 @@ int lp55xx_update_bits(struct lp55xx_chip *chip, u8 reg, u8 mask, u8 val)
}
EXPORT_SYMBOL_GPL(lp55xx_update_bits);
+int lp55xx_init_device(struct lp55xx_chip *chip)
+{
+ struct lp55xx_platform_data *pdata;
+ struct device *dev = &chip->cl->dev;
+ int ret = 0;
+
+ WARN_ON(!chip);
+
+ pdata = chip->pdata;
+
+ if (!pdata)
+ return -EINVAL;
+
+ if (pdata->setup_resources) {
+ ret = pdata->setup_resources();
+ if (ret < 0) {
+ dev_err(dev, "setup resoure err: %d\n", ret);
+ goto err;
+ }
+ }
+
+ if (pdata->enable) {
+ pdata->enable(0);
+ usleep_range(1000, 2000); /* Keep enable down at least 1ms */
+ pdata->enable(1);
+ usleep_range(1000, 2000); /* 500us abs min. */
+ }
+
+err:
+ return ret;
+}
+EXPORT_SYMBOL_GPL(lp55xx_init_device);
+
MODULE_AUTHOR("Milo Kim <milo.kim@ti.com>");
MODULE_DESCRIPTION("LP55xx Common Driver");
MODULE_LICENSE("GPL");