/* * drivers/leds/leds-h1940.c * Copyright (c) Arnaud Patard <arnaud.patard@rtp-net.org> * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive for * more details. * * H1940 leds driver * */ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/delay.h> #include <linux/string.h> #include <linux/ctype.h> #include <linux/leds.h> #include <linux/gpio.h> #include <mach/regs-gpio.h> #include <mach/hardware.h> #include <mach/h1940-latch.h> /* * Green led. */ static void h1940_greenled_set(struct led_classdev *led_dev, enum led_brightness value) { switch (value) { case LED_HALF: h1940_latch_control(0, H1940_LATCH_LED_FLASH); s3c2410_gpio_setpin(S3C2410_GPA7, 1); break; case LED_FULL: h1940_latch_control(0, H1940_LATCH_LED_GREEN); s3c2410_gpio_setpin(S3C2410_GPA7, 1); break; default: case LED_OFF: h1940_latch_control(H1940_LATCH_LED_FLASH, 0); h1940_latch_control(H1940_LATCH_LED_GREEN, 0); s3c2410_gpio_setpin(S3C2410_GPA7, 0); break; } } static struct led_classdev h1940_greenled = { .name = "h1940:green", .brightness_set = h1940_greenled_set, .default_trigger = "h1940-charger", }; /* * Red led. */ static void h1940_redled_set(struct led_classdev *led_dev, enum led_brightness value) { switch (value) { case LED_HALF: h1940_latch_control(0, H1940_LATCH_LED_FLASH); s3c2410_gpio_setpin(S3C2410_GPA1, 1); break; case LED_FULL: h1940_latch_control(0, H1940_LATCH_LED_RED); s3c2410_gpio_setpin(S3C2410_GPA1, 1); break; default: case LED_OFF: h1940_latch_control(H1940_LATCH_LED_FLASH, 0); h1940_latch_control(H1940_LATCH_LED_RED, 0); s3c2410_gpio_setpin(S3C2410_GPA1, 0); break; } } static struct led_classdev h1940_redled = { .name = "h1940:red", .brightness_set = h1940_redled_set, .default_trigger = "h1940-charger", }; /* * Blue led. * (it can only be blue flashing led) */ static void h1940_blueled_set(struct led_classdev *led_dev, enum led_brightness value) { if (value) { /* flashing Blue */ h1940_latch_control(0, H1940_LATCH_LED_FLASH); s3c2410_gpio_setpin(S3C2410_GPA3, 1); } else { h1940_latch_control(H1940_LATCH_LED_FLASH, 0); s3c2410_gpio_setpin(S3C2410_GPA3, 0); } } static struct led_classdev h1940_blueled = { .name = "h1940:blue", .brightness_set = h1940_blueled_set, .default_trigger = "h1940-bluetooth", }; static int __devinit h1940leds_probe(struct platform_device *pdev) { int ret; ret = led_classdev_register(&pdev->dev, &h1940_greenled); if (ret) goto err_green; ret = led_classdev_register(&pdev->dev, &h1940_redled); if (ret) goto err_red; ret = led_classdev_register(&pdev->dev, &h1940_blueled); if (ret) goto err_blue; return 0; err_blue: led_classdev_unregister(&h1940_redled); err_red: led_classdev_unregister(&h1940_greenled); err_green: return ret; } static int h1940leds_remove(struct platform_device *pdev) { led_classdev_unregister(&h1940_greenled); led_classdev_unregister(&h1940_redled); led_classdev_unregister(&h1940_blueled); return 0; } static struct platform_driver h1940leds_driver = { .driver = { .name = "h1940-leds", .owner = THIS_MODULE, }, .probe = h1940leds_probe, .remove = h1940leds_remove, }; static int __init h1940leds_init(void) { return platform_driver_register(&h1940leds_driver); } static void __exit h1940leds_exit(void) { platform_driver_unregister(&h1940leds_driver); } module_init(h1940leds_init); module_exit(h1940leds_exit); MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>"); MODULE_DESCRIPTION("LED driver for the iPAQ H1940"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:h1940-leds");