From 0e2023463a3c9412728cb2c36c79aca0bb731cc8 Mon Sep 17 00:00:00 2001 From: "Milo(Woogyom) Kim" Date: Tue, 5 Feb 2013 19:07:34 +0900 Subject: leds-lp55xx: use lp55xx_init_led() common function lp5521_init_led() and lp5523_init_led() are replaced with one common function, lp55xx_init_led(). Max channels is configurable, so it's used in lp55xx_init_led(). 'LP5523_LEDS' are changed to 'LP5523_MAX_LEDS'. lp55xx_set_brightness, lp55xx_led_attributes: skeleton Will be filled in next patches. Signed-off-by: Milo(Woogyom) Kim Signed-off-by: Bryan Wu --- drivers/leds/leds-lp55xx-common.c | 66 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) (limited to 'drivers/leds/leds-lp55xx-common.c') diff --git a/drivers/leds/leds-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c index 1fab1d1c4502..75ab1c3c03ed 100644 --- a/drivers/leds/leds-lp55xx-common.c +++ b/drivers/leds/leds-lp55xx-common.c @@ -63,9 +63,75 @@ static int lp55xx_post_init_device(struct lp55xx_chip *chip) return cfg->post_init_device(chip); } +static struct attribute *lp55xx_led_attributes[] = { + NULL, +}; + +static struct attribute_group lp55xx_led_attr_group = { + .attrs = lp55xx_led_attributes +}; + +static void lp55xx_set_brightness(struct led_classdev *cdev, + enum led_brightness brightness) +{ +} + static int lp55xx_init_led(struct lp55xx_led *led, struct lp55xx_chip *chip, int chan) { + struct lp55xx_platform_data *pdata = chip->pdata; + struct lp55xx_device_config *cfg = chip->cfg; + struct device *dev = &chip->cl->dev; + char name[32]; + int ret; + int max_channel = cfg->max_channel; + + if (chan >= max_channel) { + dev_err(dev, "invalid channel: %d / %d\n", chan, max_channel); + return -EINVAL; + } + + if (pdata->led_config[chan].led_current == 0) + return 0; + + led->led_current = pdata->led_config[chan].led_current; + led->max_current = pdata->led_config[chan].max_current; + led->chan_nr = pdata->led_config[chan].chan_nr; + + if (led->chan_nr >= max_channel) { + dev_err(dev, "Use channel numbers between 0 and %d\n", + max_channel - 1); + return -EINVAL; + } + + led->cdev.brightness_set = lp55xx_set_brightness; + + if (pdata->led_config[chan].name) { + led->cdev.name = pdata->led_config[chan].name; + } else { + snprintf(name, sizeof(name), "%s:channel%d", + pdata->label ? : chip->cl->name, chan); + led->cdev.name = name; + } + + /* + * register led class device for each channel and + * add device attributes + */ + + ret = led_classdev_register(dev, &led->cdev); + if (ret) { + dev_err(dev, "led register err: %d\n", ret); + return ret; + } + + ret = sysfs_create_group(&led->cdev.dev->kobj, &lp55xx_led_attr_group); + if (ret) { + dev_err(dev, "led sysfs err: %d\n", ret); + led_classdev_unregister(&led->cdev); + return ret; + } + return 0; } -- cgit v1.2.3