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3b2e46f8 RW |
1 | /* |
2 | * LED Driver for the Freecom FSG-3 | |
3 | * | |
4 | * Copyright (c) 2008 Rod Whitby <rod@whitby.id.au> | |
5 | * | |
6 | * Author: Rod Whitby <rod@whitby.id.au> | |
7 | * | |
8 | * Based on leds-spitz.c | |
9 | * Copyright 2005-2006 Openedhand Ltd. | |
10 | * Author: Richard Purdie <rpurdie@openedhand.com> | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License version 2 as | |
14 | * published by the Free Software Foundation. | |
15 | * | |
16 | */ | |
17 | ||
18 | #include <linux/kernel.h> | |
3b2e46f8 RW |
19 | #include <linux/platform_device.h> |
20 | #include <linux/leds.h> | |
54f4dedb | 21 | #include <linux/module.h> |
aa2dcf9d | 22 | #include <linux/io.h> |
a09e64fb | 23 | #include <mach/hardware.h> |
3b2e46f8 | 24 | |
914e7bc2 KH |
25 | #define FSG_LED_WLAN_BIT 0 |
26 | #define FSG_LED_WAN_BIT 1 | |
27 | #define FSG_LED_SATA_BIT 2 | |
28 | #define FSG_LED_USB_BIT 4 | |
29 | #define FSG_LED_RING_BIT 5 | |
30 | #define FSG_LED_SYNC_BIT 7 | |
31 | ||
3b2e46f8 RW |
32 | static short __iomem *latch_address; |
33 | static unsigned short latch_value; | |
34 | ||
35 | ||
36 | static void fsg_led_wlan_set(struct led_classdev *led_cdev, | |
37 | enum led_brightness value) | |
38 | { | |
39 | if (value) { | |
40 | latch_value &= ~(1 << FSG_LED_WLAN_BIT); | |
41 | *latch_address = latch_value; | |
42 | } else { | |
43 | latch_value |= (1 << FSG_LED_WLAN_BIT); | |
44 | *latch_address = latch_value; | |
45 | } | |
46 | } | |
47 | ||
48 | static void fsg_led_wan_set(struct led_classdev *led_cdev, | |
49 | enum led_brightness value) | |
50 | { | |
51 | if (value) { | |
52 | latch_value &= ~(1 << FSG_LED_WAN_BIT); | |
53 | *latch_address = latch_value; | |
54 | } else { | |
55 | latch_value |= (1 << FSG_LED_WAN_BIT); | |
56 | *latch_address = latch_value; | |
57 | } | |
58 | } | |
59 | ||
60 | static void fsg_led_sata_set(struct led_classdev *led_cdev, | |
61 | enum led_brightness value) | |
62 | { | |
63 | if (value) { | |
64 | latch_value &= ~(1 << FSG_LED_SATA_BIT); | |
65 | *latch_address = latch_value; | |
66 | } else { | |
67 | latch_value |= (1 << FSG_LED_SATA_BIT); | |
68 | *latch_address = latch_value; | |
69 | } | |
70 | } | |
71 | ||
72 | static void fsg_led_usb_set(struct led_classdev *led_cdev, | |
73 | enum led_brightness value) | |
74 | { | |
75 | if (value) { | |
76 | latch_value &= ~(1 << FSG_LED_USB_BIT); | |
77 | *latch_address = latch_value; | |
78 | } else { | |
79 | latch_value |= (1 << FSG_LED_USB_BIT); | |
80 | *latch_address = latch_value; | |
81 | } | |
82 | } | |
83 | ||
84 | static void fsg_led_sync_set(struct led_classdev *led_cdev, | |
85 | enum led_brightness value) | |
86 | { | |
87 | if (value) { | |
88 | latch_value &= ~(1 << FSG_LED_SYNC_BIT); | |
89 | *latch_address = latch_value; | |
90 | } else { | |
91 | latch_value |= (1 << FSG_LED_SYNC_BIT); | |
92 | *latch_address = latch_value; | |
93 | } | |
94 | } | |
95 | ||
96 | static void fsg_led_ring_set(struct led_classdev *led_cdev, | |
97 | enum led_brightness value) | |
98 | { | |
99 | if (value) { | |
100 | latch_value &= ~(1 << FSG_LED_RING_BIT); | |
101 | *latch_address = latch_value; | |
102 | } else { | |
103 | latch_value |= (1 << FSG_LED_RING_BIT); | |
104 | *latch_address = latch_value; | |
105 | } | |
106 | } | |
107 | ||
108 | ||
3b2e46f8 RW |
109 | static struct led_classdev fsg_wlan_led = { |
110 | .name = "fsg:blue:wlan", | |
111 | .brightness_set = fsg_led_wlan_set, | |
859cb7f2 | 112 | .flags = LED_CORE_SUSPENDRESUME, |
3b2e46f8 RW |
113 | }; |
114 | ||
115 | static struct led_classdev fsg_wan_led = { | |
116 | .name = "fsg:blue:wan", | |
117 | .brightness_set = fsg_led_wan_set, | |
859cb7f2 | 118 | .flags = LED_CORE_SUSPENDRESUME, |
3b2e46f8 RW |
119 | }; |
120 | ||
121 | static struct led_classdev fsg_sata_led = { | |
122 | .name = "fsg:blue:sata", | |
123 | .brightness_set = fsg_led_sata_set, | |
859cb7f2 | 124 | .flags = LED_CORE_SUSPENDRESUME, |
3b2e46f8 RW |
125 | }; |
126 | ||
127 | static struct led_classdev fsg_usb_led = { | |
128 | .name = "fsg:blue:usb", | |
129 | .brightness_set = fsg_led_usb_set, | |
859cb7f2 | 130 | .flags = LED_CORE_SUSPENDRESUME, |
3b2e46f8 RW |
131 | }; |
132 | ||
133 | static struct led_classdev fsg_sync_led = { | |
134 | .name = "fsg:blue:sync", | |
135 | .brightness_set = fsg_led_sync_set, | |
859cb7f2 | 136 | .flags = LED_CORE_SUSPENDRESUME, |
3b2e46f8 RW |
137 | }; |
138 | ||
139 | static struct led_classdev fsg_ring_led = { | |
140 | .name = "fsg:blue:ring", | |
141 | .brightness_set = fsg_led_ring_set, | |
859cb7f2 | 142 | .flags = LED_CORE_SUSPENDRESUME, |
3b2e46f8 RW |
143 | }; |
144 | ||
145 | ||
3b2e46f8 RW |
146 | static int fsg_led_probe(struct platform_device *pdev) |
147 | { | |
148 | int ret; | |
149 | ||
07f696c7 | 150 | /* Map the LED chip select address space */ |
aa2dcf9d JH |
151 | latch_address = (unsigned short *) devm_ioremap(&pdev->dev, |
152 | IXP4XX_EXP_BUS_BASE(2), 512); | |
153 | if (!latch_address) | |
154 | return -ENOMEM; | |
07f696c7 SW |
155 | |
156 | latch_value = 0xffff; | |
157 | *latch_address = latch_value; | |
158 | ||
c2d4af93 | 159 | ret = devm_led_classdev_register(&pdev->dev, &fsg_wlan_led); |
3b2e46f8 | 160 | if (ret < 0) |
c2d4af93 | 161 | return ret; |
3b2e46f8 | 162 | |
c2d4af93 | 163 | ret = devm_led_classdev_register(&pdev->dev, &fsg_wan_led); |
3b2e46f8 | 164 | if (ret < 0) |
c2d4af93 | 165 | return ret; |
3b2e46f8 | 166 | |
c2d4af93 | 167 | ret = devm_led_classdev_register(&pdev->dev, &fsg_sata_led); |
3b2e46f8 | 168 | if (ret < 0) |
c2d4af93 | 169 | return ret; |
3b2e46f8 | 170 | |
c2d4af93 | 171 | ret = devm_led_classdev_register(&pdev->dev, &fsg_usb_led); |
3b2e46f8 | 172 | if (ret < 0) |
c2d4af93 | 173 | return ret; |
3b2e46f8 | 174 | |
c2d4af93 | 175 | ret = devm_led_classdev_register(&pdev->dev, &fsg_sync_led); |
3b2e46f8 | 176 | if (ret < 0) |
c2d4af93 | 177 | return ret; |
3b2e46f8 | 178 | |
c2d4af93 | 179 | ret = devm_led_classdev_register(&pdev->dev, &fsg_ring_led); |
3b2e46f8 | 180 | if (ret < 0) |
c2d4af93 | 181 | return ret; |
3b2e46f8 RW |
182 | |
183 | return ret; | |
184 | } | |
185 | ||
3b2e46f8 RW |
186 | static struct platform_driver fsg_led_driver = { |
187 | .probe = fsg_led_probe, | |
3b2e46f8 RW |
188 | .driver = { |
189 | .name = "fsg-led", | |
190 | }, | |
191 | }; | |
192 | ||
892a8843 | 193 | module_platform_driver(fsg_led_driver); |
3b2e46f8 RW |
194 | |
195 | MODULE_AUTHOR("Rod Whitby <rod@whitby.id.au>"); | |
196 | MODULE_DESCRIPTION("Freecom FSG-3 LED driver"); | |
197 | MODULE_LICENSE("GPL"); |