| Kristoffer Ericson | d39a7a6 | 2008-02-07 10:10:28 +0000 | [diff] [blame] | 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 | |
| 93 | static struct platform_driver hp6xxled_driver = { |
| 94 | .probe = hp6xxled_probe, |
| 95 | .remove = hp6xxled_remove, |
| 96 | #ifdef CONFIG_PM |
| 97 | .suspend = hp6xxled_suspend, |
| 98 | .resume = hp6xxled_resume, |
| 99 | #endif |
| 100 | .driver = { |
| 101 | .name = "hp6xx-led", |
| 102 | }, |
| 103 | }; |
| 104 | |
| 105 | static int __init hp6xxled_init(void) |
| 106 | { |
| 107 | return platform_driver_register(&hp6xxled_driver); |
| 108 | } |
| 109 | |
| 110 | static void __exit hp6xxled_exit(void) |
| 111 | { |
| 112 | platform_driver_unregister(&hp6xxled_driver); |
| 113 | } |
| 114 | |
| 115 | module_init(hp6xxled_init); |
| 116 | module_exit(hp6xxled_exit); |
| 117 | |
| 118 | MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>"); |
| 119 | MODULE_DESCRIPTION("HP Jornada 6xx LED driver"); |
| 120 | MODULE_LICENSE("GPL"); |