Linux 2.6.29-rc2
[linux-2.6/mini2440.git] / drivers / leds / leds-clevo-mail.c
blob1813c84ea5fccb10293e499a3721dacf94c54290
2 #include <linux/module.h>
4 #include <linux/platform_device.h>
5 #include <linux/err.h>
6 #include <linux/leds.h>
8 #include <linux/io.h>
9 #include <linux/dmi.h>
11 #include <linux/i8042.h>
13 #define CLEVO_MAIL_LED_OFF 0x0084
14 #define CLEVO_MAIL_LED_BLINK_1HZ 0x008A
15 #define CLEVO_MAIL_LED_BLINK_0_5HZ 0x0083
17 MODULE_AUTHOR("Márton Németh <nm127@freemail.hu>");
18 MODULE_DESCRIPTION("Clevo mail LED driver");
19 MODULE_LICENSE("GPL");
21 static unsigned int __initdata nodetect;
22 module_param_named(nodetect, nodetect, bool, 0);
23 MODULE_PARM_DESC(nodetect, "Skip DMI hardware detection");
25 static struct platform_device *pdev;
27 static int __init clevo_mail_led_dmi_callback(const struct dmi_system_id *id)
29 printk(KERN_INFO KBUILD_MODNAME ": '%s' found\n", id->ident);
30 return 1;
34 * struct mail_led_whitelist - List of known good models
36 * Contains the known good models this driver is compatible with.
37 * When adding a new model try to be as strict as possible. This
38 * makes it possible to keep the false positives (the model is
39 * detected as working, but in reality it is not) as low as
40 * possible.
42 static struct dmi_system_id __initdata mail_led_whitelist[] = {
44 .callback = clevo_mail_led_dmi_callback,
45 .ident = "Clevo D410J",
46 .matches = {
47 DMI_MATCH(DMI_SYS_VENDOR, "VIA"),
48 DMI_MATCH(DMI_PRODUCT_NAME, "K8N800"),
49 DMI_MATCH(DMI_PRODUCT_VERSION, "VT8204B")
53 .callback = clevo_mail_led_dmi_callback,
54 .ident = "Clevo M5x0N",
55 .matches = {
56 DMI_MATCH(DMI_SYS_VENDOR, "CLEVO Co."),
57 DMI_MATCH(DMI_PRODUCT_NAME, "M5x0N")
61 .callback = clevo_mail_led_dmi_callback,
62 .ident = "Positivo Mobile",
63 .matches = {
64 DMI_MATCH(DMI_BOARD_VENDOR, "CLEVO Co. "),
65 DMI_MATCH(DMI_BOARD_NAME, "M5X0V "),
66 DMI_MATCH(DMI_PRODUCT_NAME, "Positivo Mobile"),
67 DMI_MATCH(DMI_PRODUCT_VERSION, "VT6198")
71 .callback = clevo_mail_led_dmi_callback,
72 .ident = "Clevo D400P",
73 .matches = {
74 DMI_MATCH(DMI_BOARD_VENDOR, "Clevo"),
75 DMI_MATCH(DMI_BOARD_NAME, "D400P"),
76 DMI_MATCH(DMI_BOARD_VERSION, "Rev.A"),
77 DMI_MATCH(DMI_PRODUCT_VERSION, "0106")
81 .callback = clevo_mail_led_dmi_callback,
82 .ident = "Clevo D410V",
83 .matches = {
84 DMI_MATCH(DMI_BOARD_VENDOR, "Clevo, Co."),
85 DMI_MATCH(DMI_BOARD_NAME, "D400V/D470V"),
86 DMI_MATCH(DMI_BOARD_VERSION, "SS78B"),
87 DMI_MATCH(DMI_PRODUCT_VERSION, "Rev. A1")
90 { }
93 static void clevo_mail_led_set(struct led_classdev *led_cdev,
94 enum led_brightness value)
96 if (value == LED_OFF)
97 i8042_command(NULL, CLEVO_MAIL_LED_OFF);
98 else if (value <= LED_HALF)
99 i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ);
100 else
101 i8042_command(NULL, CLEVO_MAIL_LED_BLINK_1HZ);
105 static int clevo_mail_led_blink(struct led_classdev *led_cdev,
106 unsigned long *delay_on,
107 unsigned long *delay_off)
109 int status = -EINVAL;
111 if (*delay_on == 0 /* ms */ && *delay_off == 0 /* ms */) {
112 /* Special case: the leds subsystem requested us to
113 * chose one user friendly blinking of the LED, and
114 * start it. Let's blink the led slowly (0.5Hz).
116 *delay_on = 1000; /* ms */
117 *delay_off = 1000; /* ms */
118 i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ);
119 status = 0;
121 } else if (*delay_on == 500 /* ms */ && *delay_off == 500 /* ms */) {
122 /* blink the led with 1Hz */
123 i8042_command(NULL, CLEVO_MAIL_LED_BLINK_1HZ);
124 status = 0;
126 } else if (*delay_on == 1000 /* ms */ && *delay_off == 1000 /* ms */) {
127 /* blink the led with 0.5Hz */
128 i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ);
129 status = 0;
131 } else {
132 printk(KERN_DEBUG KBUILD_MODNAME
133 ": clevo_mail_led_blink(..., %lu, %lu),"
134 " returning -EINVAL (unsupported)\n",
135 *delay_on, *delay_off);
138 return status;
141 static struct led_classdev clevo_mail_led = {
142 .name = "clevo::mail",
143 .brightness_set = clevo_mail_led_set,
144 .blink_set = clevo_mail_led_blink,
145 .flags = LED_CORE_SUSPENDRESUME,
148 static int __init clevo_mail_led_probe(struct platform_device *pdev)
150 return led_classdev_register(&pdev->dev, &clevo_mail_led);
153 static int clevo_mail_led_remove(struct platform_device *pdev)
155 led_classdev_unregister(&clevo_mail_led);
156 return 0;
159 static struct platform_driver clevo_mail_led_driver = {
160 .probe = clevo_mail_led_probe,
161 .remove = clevo_mail_led_remove,
162 .driver = {
163 .name = KBUILD_MODNAME,
164 .owner = THIS_MODULE,
168 static int __init clevo_mail_led_init(void)
170 int error = 0;
171 int count = 0;
173 /* Check with the help of DMI if we are running on supported hardware */
174 if (!nodetect) {
175 count = dmi_check_system(mail_led_whitelist);
176 } else {
177 count = 1;
178 printk(KERN_ERR KBUILD_MODNAME ": Skipping DMI detection. "
179 "If the driver works on your hardware please "
180 "report model and the output of dmidecode in tracker "
181 "at http://sourceforge.net/projects/clevo-mailled/\n");
184 if (!count)
185 return -ENODEV;
187 pdev = platform_device_register_simple(KBUILD_MODNAME, -1, NULL, 0);
188 if (!IS_ERR(pdev)) {
189 error = platform_driver_probe(&clevo_mail_led_driver,
190 clevo_mail_led_probe);
191 if (error) {
192 printk(KERN_ERR KBUILD_MODNAME
193 ": Can't probe platform driver\n");
194 platform_device_unregister(pdev);
196 } else
197 error = PTR_ERR(pdev);
199 return error;
202 static void __exit clevo_mail_led_exit(void)
204 platform_device_unregister(pdev);
205 platform_driver_unregister(&clevo_mail_led_driver);
207 clevo_mail_led_set(NULL, LED_OFF);
210 module_init(clevo_mail_led_init);
211 module_exit(clevo_mail_led_exit);