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18#include <linux/kernel.h>
19#include <linux/init.h>
20#include <linux/platform_device.h>
21#include <linux/leds.h>
22#include <mach/hardware.h>
23#include <asm/io.h>
24
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
32static short __iomem *latch_address;
33static unsigned short latch_value;
34
35
36static 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
48static 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
60static 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
72static 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
84static 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
96static 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
109static struct led_classdev fsg_wlan_led = {
110 .name = "fsg:blue:wlan",
111 .brightness_set = fsg_led_wlan_set,
112 .flags = LED_CORE_SUSPENDRESUME,
113};
114
115static struct led_classdev fsg_wan_led = {
116 .name = "fsg:blue:wan",
117 .brightness_set = fsg_led_wan_set,
118 .flags = LED_CORE_SUSPENDRESUME,
119};
120
121static struct led_classdev fsg_sata_led = {
122 .name = "fsg:blue:sata",
123 .brightness_set = fsg_led_sata_set,
124 .flags = LED_CORE_SUSPENDRESUME,
125};
126
127static struct led_classdev fsg_usb_led = {
128 .name = "fsg:blue:usb",
129 .brightness_set = fsg_led_usb_set,
130 .flags = LED_CORE_SUSPENDRESUME,
131};
132
133static struct led_classdev fsg_sync_led = {
134 .name = "fsg:blue:sync",
135 .brightness_set = fsg_led_sync_set,
136 .flags = LED_CORE_SUSPENDRESUME,
137};
138
139static struct led_classdev fsg_ring_led = {
140 .name = "fsg:blue:ring",
141 .brightness_set = fsg_led_ring_set,
142 .flags = LED_CORE_SUSPENDRESUME,
143};
144
145
146static int fsg_led_probe(struct platform_device *pdev)
147{
148 int ret;
149
150
151 latch_address = (unsigned short *) ioremap(IXP4XX_EXP_BUS_BASE(2), 512);
152 if (!latch_address) {
153 ret = -ENOMEM;
154 goto failremap;
155 }
156
157 latch_value = 0xffff;
158 *latch_address = latch_value;
159
160 ret = led_classdev_register(&pdev->dev, &fsg_wlan_led);
161 if (ret < 0)
162 goto failwlan;
163
164 ret = led_classdev_register(&pdev->dev, &fsg_wan_led);
165 if (ret < 0)
166 goto failwan;
167
168 ret = led_classdev_register(&pdev->dev, &fsg_sata_led);
169 if (ret < 0)
170 goto failsata;
171
172 ret = led_classdev_register(&pdev->dev, &fsg_usb_led);
173 if (ret < 0)
174 goto failusb;
175
176 ret = led_classdev_register(&pdev->dev, &fsg_sync_led);
177 if (ret < 0)
178 goto failsync;
179
180 ret = led_classdev_register(&pdev->dev, &fsg_ring_led);
181 if (ret < 0)
182 goto failring;
183
184 return ret;
185
186 failring:
187 led_classdev_unregister(&fsg_sync_led);
188 failsync:
189 led_classdev_unregister(&fsg_usb_led);
190 failusb:
191 led_classdev_unregister(&fsg_sata_led);
192 failsata:
193 led_classdev_unregister(&fsg_wan_led);
194 failwan:
195 led_classdev_unregister(&fsg_wlan_led);
196 failwlan:
197 iounmap(latch_address);
198 failremap:
199
200 return ret;
201}
202
203static int fsg_led_remove(struct platform_device *pdev)
204{
205 led_classdev_unregister(&fsg_wlan_led);
206 led_classdev_unregister(&fsg_wan_led);
207 led_classdev_unregister(&fsg_sata_led);
208 led_classdev_unregister(&fsg_usb_led);
209 led_classdev_unregister(&fsg_sync_led);
210 led_classdev_unregister(&fsg_ring_led);
211
212 iounmap(latch_address);
213
214 return 0;
215}
216
217
218static struct platform_driver fsg_led_driver = {
219 .probe = fsg_led_probe,
220 .remove = fsg_led_remove,
221 .driver = {
222 .name = "fsg-led",
223 },
224};
225
226
227static int __init fsg_led_init(void)
228{
229 return platform_driver_register(&fsg_led_driver);
230}
231
232static void __exit fsg_led_exit(void)
233{
234 platform_driver_unregister(&fsg_led_driver);
235}
236
237
238module_init(fsg_led_init);
239module_exit(fsg_led_exit);
240
241MODULE_AUTHOR("Rod Whitby <rod@whitby.id.au>");
242MODULE_DESCRIPTION("Freecom FSG-3 LED driver");
243MODULE_LICENSE("GPL");
244
