diff options
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/leds/Makefile | 1 | ||||
| -rw-r--r-- | drivers/leds/leds-cobalt-raq.c | 138 |
3 files changed, 146 insertions, 0 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 9b79bcd9bf11..3cb23210b912 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -93,6 +93,13 @@ config LEDS_COBALT_QUBE help This option enables support for the front LED on Cobalt Qube series +config LEDS_COBALT_RAQ + bool "LED Support for the Cobalt Raq series" + depends on LEDS_CLASS && MIPS_COBALT + select LEDS_TRIGGERS + help + This option enables support for the Cobalt Raq series LEDs. + config LEDS_GPIO tristate "LED Support for GPIO connected LEDs" depends on LEDS_CLASS && GENERIC_GPIO diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index 9b2684a20888..d2ca1abbc3d2 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -16,6 +16,7 @@ obj-$(CONFIG_LEDS_NET48XX) += leds-net48xx.o obj-$(CONFIG_LEDS_WRAP) += leds-wrap.o obj-$(CONFIG_LEDS_H1940) += leds-h1940.o obj-$(CONFIG_LEDS_COBALT_QUBE) += leds-cobalt-qube.o +obj-$(CONFIG_LEDS_COBALT_RAQ) += leds-cobalt-raq.o obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o # LED Triggers diff --git a/drivers/leds/leds-cobalt-raq.c b/drivers/leds/leds-cobalt-raq.c new file mode 100644 index 000000000000..6ebfff341e6c --- /dev/null +++ b/drivers/leds/leds-cobalt-raq.c @@ -0,0 +1,138 @@ +/* + * LEDs driver for the Cobalt Raq series. + * + * Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include <linux/init.h> +#include <linux/io.h> +#include <linux/ioport.h> +#include <linux/leds.h> +#include <linux/platform_device.h> +#include <linux/spinlock.h> +#include <linux/types.h> + +#define LED_WEB 0x04 +#define LED_POWER_OFF 0x08 + +static void __iomem *led_port; +static u8 led_value; +static DEFINE_SPINLOCK(led_value_lock); + +static void raq_web_led_set(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + unsigned long flags; + + spin_lock_irqsave(&led_value_lock, flags); + + if (brightness) + led_value |= LED_WEB; + else + led_value &= ~LED_WEB; + writeb(led_value, led_port); + + spin_unlock_irqrestore(&led_value_lock, flags); +} + +static struct led_classdev raq_web_led = { + .name = "raq-web", + .brightness_set = raq_web_led_set, +}; + +static void raq_power_off_led_set(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + unsigned long flags; + + spin_lock_irqsave(&led_value_lock, flags); + + if (brightness) + led_value |= LED_POWER_OFF; + else + led_value &= ~LED_POWER_OFF; + writeb(led_value, led_port); + + spin_unlock_irqrestore(&led_value_lock, flags); +} + +static struct led_classdev raq_power_off_led = { + .name = "raq-power-off", + .brightness_set = raq_power_off_led_set, + .default_trigger = "power-off", +}; + +static int __devinit cobalt_raq_led_probe(struct platform_device *pdev) +{ + struct resource *res; + int retval; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -EBUSY; + + led_port = ioremap(res->start, res->end - res->start + 1); + if (!led_port) + return -ENOMEM; + + retval = led_classdev_register(&pdev->dev, &raq_power_off_led); + if (retval) + goto err_iounmap; + + retval = led_classdev_register(&pdev->dev, &raq_web_led); + if (retval) + goto err_unregister; + + return 0; + +err_unregister: + led_classdev_unregister(&raq_power_off_led); + +err_iounmap: + iounmap(led_port); + led_port = NULL; + + return retval; +} + +static int __devexit cobalt_raq_led_remove(struct platform_device *pdev) +{ + led_classdev_unregister(&raq_power_off_led); + led_classdev_unregister(&raq_web_led); + + if (led_port) { + iounmap(led_port); + led_port = NULL; + } + + return 0; +} + +static struct platform_driver cobalt_raq_led_driver = { + .probe = cobalt_raq_led_probe, + .remove = __devexit_p(cobalt_raq_led_remove), + .driver = { + .name = "cobalt-raq-leds", + .owner = THIS_MODULE, + }, +}; + +static int __init cobalt_raq_led_init(void) +{ + return platform_driver_register(&cobalt_raq_led_driver); +} + +module_init(cobalt_raq_led_init); |