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18#include <linux/kernel.h>
19#include <linux/platform_device.h>
20#include <linux/leds.h>
21#include <linux/module.h>
22#include <linux/io.h>
23#include <mach/hardware.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 *) devm_ioremap(&pdev->dev,
152 IXP4XX_EXP_BUS_BASE(2), 512);
153 if (!latch_address)
154 return -ENOMEM;
155
156 latch_value = 0xffff;
157 *latch_address = latch_value;
158
159 ret = devm_led_classdev_register(&pdev->dev, &fsg_wlan_led);
160 if (ret < 0)
161 return ret;
162
163 ret = devm_led_classdev_register(&pdev->dev, &fsg_wan_led);
164 if (ret < 0)
165 return ret;
166
167 ret = devm_led_classdev_register(&pdev->dev, &fsg_sata_led);
168 if (ret < 0)
169 return ret;
170
171 ret = devm_led_classdev_register(&pdev->dev, &fsg_usb_led);
172 if (ret < 0)
173 return ret;
174
175 ret = devm_led_classdev_register(&pdev->dev, &fsg_sync_led);
176 if (ret < 0)
177 return ret;
178
179 ret = devm_led_classdev_register(&pdev->dev, &fsg_ring_led);
180 if (ret < 0)
181 return ret;
182
183 return ret;
184}
185
186static struct platform_driver fsg_led_driver = {
187 .probe = fsg_led_probe,
188 .driver = {
189 .name = "fsg-led",
190 },
191};
192
193module_platform_driver(fsg_led_driver);
194
195MODULE_AUTHOR("Rod Whitby <rod@whitby.id.au>");
196MODULE_DESCRIPTION("Freecom FSG-3 LED driver");
197MODULE_LICENSE("GPL");
198
