projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| d39a7a63 KE |
1 | /* |
| 2 | * LED Triggers Core | |
| 3 | * For the HP Jornada 620/660/680/690 handhelds | |
| 4 | * | |
| 5 | * Copyright 2008 Kristoffer Ericson <kristoffer.ericson@gmail.com> | |
| 6 | * this driver is based on leds-spitz.c by Richard Purdie. | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or modify | |
| 9 | * it under the terms of the GNU General Public License version 2 as | |
| 10 | * published by the Free Software Foundation. | |
| 11 | */ | |
| 12 | ||
| 13 | #include <linux/kernel.h> | |
| 14 | #include <linux/init.h> | |
| 15 | #include <linux/platform_device.h> | |
| 16 | #include <linux/leds.h> | |
| 17 | #include <asm/hd64461.h> | |
| 18 | #include <asm/hp6xx.h> | |
| 19 | ||
| 20 | static void hp6xxled_green_set(struct led_classdev *led_cdev, enum led_brightness value) | |
| 21 | { | |
| 22 | u8 v8; | |
| 23 | ||
| 24 | v8 = inb(PKDR); | |
| 25 | if (value) | |
| 26 | outb(v8 & (~PKDR_LED_GREEN), PKDR); | |
| 27 | else | |
| 28 | outb(v8 | PKDR_LED_GREEN, PKDR); | |
| 29 | } | |
| 30 | ||
| 31 | static void hp6xxled_red_set(struct led_classdev *led_cdev, enum led_brightness value) | |
| 32 | { | |
| 33 | u16 v16; | |
| 34 | ||
| 35 | v16 = inw(HD64461_GPBDR); | |
| 36 | if (value) | |
| 37 | outw(v16 & (~HD64461_GPBDR_LED_RED), HD64461_GPBDR); | |
| 38 | else | |
| 39 | outw(v16 | HD64461_GPBDR_LED_RED, HD64461_GPBDR); | |
| 40 | } | |
| 41 | ||
| 42 | static struct led_classdev hp6xx_red_led = { | |
| 43 | .name = "hp6xx:red", | |
| 44 | .default_trigger = "hp6xx-charge", | |
| 45 | .brightness_set = hp6xxled_red_set, | |
| 46 | }; | |
| 47 | ||
| 48 | static struct led_classdev hp6xx_green_led = { | |
| 49 | .name = "hp6xx:green", | |
| 50 | .default_trigger = "ide-disk", | |
| 51 | .brightness_set = hp6xxled_green_set, | |
| 52 | }; | |
| 53 | ||
| 54 | #ifdef CONFIG_PM | |
| 55 | static int hp6xxled_suspend(struct platform_device *dev, pm_message_t state) | |
| 56 | { | |
| 57 | led_classdev_suspend(&hp6xx_red_led); | |
| 58 | led_classdev_suspend(&hp6xx_green_led); | |
| 59 | return 0; | |
| 60 | } | |
| 61 | ||
| 62 | static int hp6xxled_resume(struct platform_device *dev) | |
| 63 | { | |
| 64 | led_classdev_resume(&hp6xx_red_led); | |
| 65 | led_classdev_resume(&hp6xx_green_led); | |
| 66 | return 0; | |
| 67 | } | |
| 68 | #endif | |
| 69 | ||
| 70 | static int hp6xxled_probe(struct platform_device *pdev) | |
| 71 | { | |
| 72 | int ret; | |
| 73 | ||
| 74 | ret = led_classdev_register(&pdev->dev, &hp6xx_red_led); | |
| 75 | if (ret < 0) | |
| 76 | return ret; | |
| 77 | ||
| 78 | ret = led_classdev_register(&pdev->dev, &hp6xx_green_led); | |
| 79 | if (ret < 0) | |
| 80 | led_classdev_unregister(&hp6xx_red_led); | |
| 81 | ||
| 82 | return ret; | |
| 83 | } | |
| 84 | ||
| 85 | static int hp6xxled_remove(struct platform_device *pdev) | |
| 86 | { | |
| 87 | led_classdev_unregister(&hp6xx_red_led); | |
| 88 | led_classdev_unregister(&hp6xx_green_led); | |
| 89 | ||
| 90 | return 0; | |
| 91 | } | |
| 92 | ||
| 3c4ded97 KS |
93 | /* work with hotplug and coldplug */ |
| 94 | MODULE_ALIAS("platform:hp6xx-led"); | |
| 95 | ||
| d39a7a63 KE |
96 | static struct platform_driver hp6xxled_driver = { |
| 97 | .probe = hp6xxled_probe, | |
| 98 | .remove = hp6xxled_remove, | |
| 99 | #ifdef CONFIG_PM | |
| 100 | .suspend = hp6xxled_suspend, | |
| 101 | .resume = hp6xxled_resume, | |
| 102 | #endif | |
| 103 | .driver = { | |
| 104 | .name = "hp6xx-led", | |
| 3c4ded97 | 105 | .owner = THIS_MODULE, |
| d39a7a63 KE |
106 | }, |
| 107 | }; | |
| 108 | ||
| 109 | static int __init hp6xxled_init(void) | |
| 110 | { | |
| 111 | return platform_driver_register(&hp6xxled_driver); | |
| 112 | } | |
| 113 | ||
| 114 | static void __exit hp6xxled_exit(void) | |
| 115 | { | |
| 116 | platform_driver_unregister(&hp6xxled_driver); | |
| 117 | } | |
| 118 | ||
| 119 | module_init(hp6xxled_init); | |
| 120 | module_exit(hp6xxled_exit); | |
| 121 | ||
| 122 | MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>"); | |
| 123 | MODULE_DESCRIPTION("HP Jornada 6xx LED driver"); | |
| 124 | MODULE_LICENSE("GPL"); |