diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/leds/leds-cobalt-qube.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/leds/leds-cobalt-qube.c b/drivers/leds/leds-cobalt-qube.c new file mode 100644 index 000000000..ef22e1e94 --- /dev/null +++ b/drivers/leds/leds-cobalt-qube.c @@ -0,0 +1,67 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright 2006 - Florian Fainelli <florian@openwrt.org> + * + * Control the Cobalt Qube/RaQ front LED + */ +#include <linux/io.h> +#include <linux/ioport.h> +#include <linux/leds.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/types.h> + +#define LED_FRONT_LEFT 0x01 +#define LED_FRONT_RIGHT 0x02 + +static void __iomem *led_port; +static u8 led_value; + +static void qube_front_led_set(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + if (brightness) + led_value = LED_FRONT_LEFT | LED_FRONT_RIGHT; + else + led_value = ~(LED_FRONT_LEFT | LED_FRONT_RIGHT); + writeb(led_value, led_port); +} + +static struct led_classdev qube_front_led = { + .name = "qube::front", + .brightness = LED_FULL, + .brightness_set = qube_front_led_set, + .default_trigger = "default-on", +}; + +static int cobalt_qube_led_probe(struct platform_device *pdev) +{ + struct resource *res; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -EBUSY; + + led_port = devm_ioremap(&pdev->dev, res->start, resource_size(res)); + if (!led_port) + return -ENOMEM; + + led_value = LED_FRONT_LEFT | LED_FRONT_RIGHT; + writeb(led_value, led_port); + + return devm_led_classdev_register(&pdev->dev, &qube_front_led); +} + +static struct platform_driver cobalt_qube_led_driver = { + .probe = cobalt_qube_led_probe, + .driver = { + .name = "cobalt-qube-leds", + }, +}; + +module_platform_driver(cobalt_qube_led_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Front LED support for Cobalt Server"); +MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>"); +MODULE_ALIAS("platform:cobalt-qube-leds"); |