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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> | |
7639a454 | 18 | #include <mach/hp6xx.h> |
d39a7a63 | 19 | |
4d404fd5 NM |
20 | static void hp6xxled_green_set(struct led_classdev *led_cdev, |
21 | enum led_brightness value) | |
d39a7a63 KE |
22 | { |
23 | u8 v8; | |
24 | ||
25 | v8 = inb(PKDR); | |
26 | if (value) | |
27 | outb(v8 & (~PKDR_LED_GREEN), PKDR); | |
28 | else | |
29 | outb(v8 | PKDR_LED_GREEN, PKDR); | |
30 | } | |
31 | ||
4d404fd5 NM |
32 | static void hp6xxled_red_set(struct led_classdev *led_cdev, |
33 | enum led_brightness value) | |
d39a7a63 KE |
34 | { |
35 | u16 v16; | |
36 | ||
37 | v16 = inw(HD64461_GPBDR); | |
38 | if (value) | |
39 | outw(v16 & (~HD64461_GPBDR_LED_RED), HD64461_GPBDR); | |
40 | else | |
41 | outw(v16 | HD64461_GPBDR_LED_RED, HD64461_GPBDR); | |
42 | } | |
43 | ||
44 | static struct led_classdev hp6xx_red_led = { | |
45 | .name = "hp6xx:red", | |
46 | .default_trigger = "hp6xx-charge", | |
47 | .brightness_set = hp6xxled_red_set, | |
48 | }; | |
49 | ||
50 | static struct led_classdev hp6xx_green_led = { | |
51 | .name = "hp6xx:green", | |
52 | .default_trigger = "ide-disk", | |
53 | .brightness_set = hp6xxled_green_set, | |
54 | }; | |
55 | ||
56 | #ifdef CONFIG_PM | |
57 | static int hp6xxled_suspend(struct platform_device *dev, pm_message_t state) | |
58 | { | |
59 | led_classdev_suspend(&hp6xx_red_led); | |
60 | led_classdev_suspend(&hp6xx_green_led); | |
61 | return 0; | |
62 | } | |
63 | ||
64 | static int hp6xxled_resume(struct platform_device *dev) | |
65 | { | |
66 | led_classdev_resume(&hp6xx_red_led); | |
67 | led_classdev_resume(&hp6xx_green_led); | |
68 | return 0; | |
69 | } | |
70 | #endif | |
71 | ||
72 | static int hp6xxled_probe(struct platform_device *pdev) | |
73 | { | |
74 | int ret; | |
75 | ||
76 | ret = led_classdev_register(&pdev->dev, &hp6xx_red_led); | |
77 | if (ret < 0) | |
78 | return ret; | |
79 | ||
80 | ret = led_classdev_register(&pdev->dev, &hp6xx_green_led); | |
81 | if (ret < 0) | |
82 | led_classdev_unregister(&hp6xx_red_led); | |
83 | ||
84 | return ret; | |
85 | } | |
86 | ||
87 | static int hp6xxled_remove(struct platform_device *pdev) | |
88 | { | |
89 | led_classdev_unregister(&hp6xx_red_led); | |
90 | led_classdev_unregister(&hp6xx_green_led); | |
91 | ||
92 | return 0; | |
93 | } | |
94 | ||
3c4ded97 KS |
95 | /* work with hotplug and coldplug */ |
96 | MODULE_ALIAS("platform:hp6xx-led"); | |
97 | ||
d39a7a63 KE |
98 | static struct platform_driver hp6xxled_driver = { |
99 | .probe = hp6xxled_probe, | |
100 | .remove = hp6xxled_remove, | |
101 | #ifdef CONFIG_PM | |
102 | .suspend = hp6xxled_suspend, | |
103 | .resume = hp6xxled_resume, | |
104 | #endif | |
105 | .driver = { | |
106 | .name = "hp6xx-led", | |
3c4ded97 | 107 | .owner = THIS_MODULE, |
d39a7a63 KE |
108 | }, |
109 | }; | |
110 | ||
111 | static int __init hp6xxled_init(void) | |
112 | { | |
113 | return platform_driver_register(&hp6xxled_driver); | |
114 | } | |
115 | ||
116 | static void __exit hp6xxled_exit(void) | |
117 | { | |
118 | platform_driver_unregister(&hp6xxled_driver); | |
119 | } | |
120 | ||
121 | module_init(hp6xxled_init); | |
122 | module_exit(hp6xxled_exit); | |
123 | ||
124 | MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>"); | |
125 | MODULE_DESCRIPTION("HP Jornada 6xx LED driver"); | |
126 | MODULE_LICENSE("GPL"); |