projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 4d3cb354 RP |
1 | /* |
| 2 | * linux/drivers/leds/locomo.c | |
| 3 | * | |
| 4 | * Copyright (C) 2005 John Lenz <[email protected]> | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License version 2 as | |
| 8 | * published by the Free Software Foundation. | |
| 9 | */ | |
| 10 | ||
| 11 | #include <linux/config.h> | |
| 12 | #include <linux/kernel.h> | |
| 13 | #include <linux/init.h> | |
| 14 | #include <linux/device.h> | |
| 15 | #include <linux/leds.h> | |
| 16 | ||
| 17 | #include <asm/hardware.h> | |
| 18 | #include <asm/hardware/locomo.h> | |
| 19 | ||
| 20 | static void locomoled_brightness_set(struct led_classdev *led_cdev, | |
| 21 | enum led_brightness value, int offset) | |
| 22 | { | |
| 23 | struct locomo_dev *locomo_dev = LOCOMO_DEV(led_cdev->class_dev->dev); | |
| 24 | unsigned long flags; | |
| 25 | ||
| 26 | local_irq_save(flags); | |
| 27 | if (value) | |
| 28 | locomo_writel(LOCOMO_LPT_TOFH, locomo_dev->mapbase + offset); | |
| 29 | else | |
| 30 | locomo_writel(LOCOMO_LPT_TOFL, locomo_dev->mapbase + offset); | |
| 31 | local_irq_restore(flags); | |
| 32 | } | |
| 33 | ||
| 34 | static void locomoled_brightness_set0(struct led_classdev *led_cdev, | |
| 35 | enum led_brightness value) | |
| 36 | { | |
| 37 | locomoled_brightness_set(led_cdev, value, LOCOMO_LPT0); | |
| 38 | } | |
| 39 | ||
| 40 | static void locomoled_brightness_set1(struct led_classdev *led_cdev, | |
| 41 | enum led_brightness value) | |
| 42 | { | |
| 43 | locomoled_brightness_set(led_cdev, value, LOCOMO_LPT1); | |
| 44 | } | |
| 45 | ||
| 46 | static struct led_classdev locomo_led0 = { | |
| 47 | .name = "locomo:amber", | |
| 48 | .brightness_set = locomoled_brightness_set0, | |
| 49 | }; | |
| 50 | ||
| 51 | static struct led_classdev locomo_led1 = { | |
| 52 | .name = "locomo:green", | |
| 53 | .brightness_set = locomoled_brightness_set1, | |
| 54 | }; | |
| 55 | ||
| 56 | static int locomoled_probe(struct locomo_dev *ldev) | |
| 57 | { | |
| 58 | int ret; | |
| 59 | ||
| 60 | ret = led_classdev_register(&ldev->dev, &locomo_led0); | |
| 61 | if (ret < 0) | |
| 62 | return ret; | |
| 63 | ||
| 64 | ret = led_classdev_register(&ldev->dev, &locomo_led1); | |
| 65 | if (ret < 0) | |
| 66 | led_classdev_unregister(&locomo_led0); | |
| 67 | ||
| 68 | return ret; | |
| 69 | } | |
| 70 | ||
| 71 | static int locomoled_remove(struct locomo_dev *dev) | |
| 72 | { | |
| 73 | led_classdev_unregister(&locomo_led0); | |
| 74 | led_classdev_unregister(&locomo_led1); | |
| 75 | return 0; | |
| 76 | } | |
| 77 | ||
| 78 | static struct locomo_driver locomoled_driver = { | |
| 79 | .drv = { | |
| 80 | .name = "locomoled" | |
| 81 | }, | |
| 82 | .devid = LOCOMO_DEVID_LED, | |
| 83 | .probe = locomoled_probe, | |
| 84 | .remove = locomoled_remove, | |
| 85 | }; | |
| 86 | ||
| 87 | static int __init locomoled_init(void) | |
| 88 | { | |
| 89 | return locomo_driver_register(&locomoled_driver); | |
| 90 | } | |
| 91 | module_init(locomoled_init); | |
| 92 | ||
| 93 | MODULE_AUTHOR("John Lenz <[email protected]>"); | |
| 94 | MODULE_DESCRIPTION("Locomo LED driver"); | |
| 95 | MODULE_LICENSE("GPL"); |