diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/leds/leds-lp55xx-common.c | 13 | ||||
| -rw-r--r-- | drivers/leds/leds-lp55xx-common.h | 4 |
2 files changed, 16 insertions, 1 deletions
diff --git a/drivers/leds/leds-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c index 578902ab604..9638ad4dc63 100644 --- a/drivers/leds/leds-lp55xx-common.c +++ b/drivers/leds/leds-lp55xx-common.c @@ -493,8 +493,19 @@ EXPORT_SYMBOL_GPL(lp55xx_unregister_leds); int lp55xx_register_sysfs(struct lp55xx_chip *chip) { struct device *dev = &chip->cl->dev; + struct lp55xx_device_config *cfg = chip->cfg; + int ret; + + if (!cfg->run_engine || !cfg->firmware_cb) + goto dev_specific_attrs; + + ret = sysfs_create_group(&dev->kobj, &lp55xx_engine_attr_group); + if (ret) + return ret; - return sysfs_create_group(&dev->kobj, &lp55xx_engine_attr_group); +dev_specific_attrs: + return cfg->dev_attr_group ? + sysfs_create_group(&dev->kobj, cfg->dev_attr_group) : 0; } EXPORT_SYMBOL_GPL(lp55xx_register_sysfs); diff --git a/drivers/leds/leds-lp55xx-common.h b/drivers/leds/leds-lp55xx-common.h index 8473abf9830..64eb78da1c4 100644 --- a/drivers/leds/leds-lp55xx-common.h +++ b/drivers/leds/leds-lp55xx-common.h @@ -45,6 +45,7 @@ struct lp55xx_reg { * @set_led_current : LED current set function * @firmware_cb : Call function when the firmware is loaded * @run_engine : Run internal engine for pattern + * @dev_attr_group : Device specific attributes */ struct lp55xx_device_config { const struct lp55xx_reg reset; @@ -65,6 +66,9 @@ struct lp55xx_device_config { /* used for running firmware LED patterns */ void (*run_engine) (struct lp55xx_chip *chip, bool start); + + /* additional device specific attributes */ + const struct attribute_group *dev_attr_group; }; /* |