diff options
Diffstat (limited to 'drivers/leds/leds-h1940.c')
| -rw-r--r-- | drivers/leds/leds-h1940.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/drivers/leds/leds-h1940.c b/drivers/leds/leds-h1940.c new file mode 100644 index 000000000000..1d49d2ade557 --- /dev/null +++ b/drivers/leds/leds-h1940.c @@ -0,0 +1,163 @@ +/* + * drivers/leds/h1940-leds.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 <asm/arch/regs-gpio.h> +#include <asm/hardware.h> +#include <asm/arch/h1940-latch.h> + +/* + * Green led. + */ +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. + */ +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) + */ +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 __init 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", + }, + .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"); |