Márton Németh | cec035d | 2007-10-31 11:46:41 +0100 | [diff] [blame] | 1 | |
| 2 | #include <linux/module.h> |
| 3 | |
| 4 | #include <linux/platform_device.h> |
| 5 | #include <linux/err.h> |
| 6 | #include <linux/leds.h> |
| 7 | |
| 8 | #include <linux/io.h> |
| 9 | #include <linux/dmi.h> |
| 10 | |
| 11 | #include <linux/i8042.h> |
| 12 | |
| 13 | #define CLEVO_MAIL_LED_OFF 0x0084 |
| 14 | #define CLEVO_MAIL_LED_BLINK_1HZ 0x008A |
| 15 | #define CLEVO_MAIL_LED_BLINK_0_5HZ 0x0083 |
| 16 | |
| 17 | MODULE_AUTHOR("Márton Németh <nm127@freemail.hu>"); |
| 18 | MODULE_DESCRIPTION("Clevo mail LED driver"); |
| 19 | MODULE_LICENSE("GPL"); |
| 20 | |
| 21 | static unsigned int __initdata nodetect; |
| 22 | module_param_named(nodetect, nodetect, bool, 0); |
| 23 | MODULE_PARM_DESC(nodetect, "Skip DMI hardware detection"); |
| 24 | |
| 25 | static struct platform_device *pdev; |
| 26 | |
| 27 | static int __init clevo_mail_led_dmi_callback(const struct dmi_system_id *id) |
| 28 | { |
| 29 | printk(KERN_INFO KBUILD_MODNAME ": '%s' found\n", id->ident); |
| 30 | return 1; |
| 31 | } |
| 32 | |
| 33 | /* |
| 34 | * struct mail_led_whitelist - List of known good models |
| 35 | * |
| 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. |
| 41 | */ |
| 42 | static struct dmi_system_id __initdata mail_led_whitelist[] = { |
| 43 | { |
| 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") |
| 50 | } |
| 51 | }, |
| 52 | { |
| 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") |
| 58 | } |
| 59 | }, |
| 60 | { |
| 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") |
| 68 | } |
| 69 | }, |
| 70 | { |
| 71 | .callback = clevo_mail_led_dmi_callback, |
Mrton Nmeth | b3ba31f | 2008-03-09 20:47:59 +0000 | [diff] [blame^] | 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") |
| 78 | } |
| 79 | }, |
| 80 | { |
| 81 | .callback = clevo_mail_led_dmi_callback, |
Márton Németh | cec035d | 2007-10-31 11:46:41 +0100 | [diff] [blame] | 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") |
| 88 | } |
| 89 | }, |
| 90 | { } |
| 91 | }; |
| 92 | |
| 93 | static void clevo_mail_led_set(struct led_classdev *led_cdev, |
| 94 | enum led_brightness value) |
| 95 | { |
| 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); |
| 102 | |
| 103 | } |
| 104 | |
Márton Németh | 92e015c | 2007-10-31 15:09:05 +0100 | [diff] [blame] | 105 | static int clevo_mail_led_blink(struct led_classdev *led_cdev, |
| 106 | unsigned long* delay_on, |
| 107 | unsigned long* delay_off) |
| 108 | { |
| 109 | int status = -EINVAL; |
| 110 | |
| 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). |
| 115 | */ |
| 116 | *delay_on = 1000; /* ms */ |
| 117 | *delay_off = 1000; /* ms */ |
| 118 | i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ); |
| 119 | status = 0; |
| 120 | |
| 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; |
| 125 | |
| 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; |
| 130 | |
| 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); |
| 136 | } |
| 137 | |
| 138 | return status; |
| 139 | } |
| 140 | |
Márton Németh | cec035d | 2007-10-31 11:46:41 +0100 | [diff] [blame] | 141 | static struct led_classdev clevo_mail_led = { |
Richard Purdie | 6c152be | 2007-10-31 15:00:07 +0100 | [diff] [blame] | 142 | .name = "clevo::mail", |
Márton Németh | cec035d | 2007-10-31 11:46:41 +0100 | [diff] [blame] | 143 | .brightness_set = clevo_mail_led_set, |
Márton Németh | 92e015c | 2007-10-31 15:09:05 +0100 | [diff] [blame] | 144 | .blink_set = clevo_mail_led_blink, |
Márton Németh | cec035d | 2007-10-31 11:46:41 +0100 | [diff] [blame] | 145 | }; |
| 146 | |
| 147 | static int __init clevo_mail_led_probe(struct platform_device *pdev) |
| 148 | { |
| 149 | return led_classdev_register(&pdev->dev, &clevo_mail_led); |
| 150 | } |
| 151 | |
| 152 | static int clevo_mail_led_remove(struct platform_device *pdev) |
| 153 | { |
| 154 | led_classdev_unregister(&clevo_mail_led); |
| 155 | return 0; |
| 156 | } |
| 157 | |
| 158 | #ifdef CONFIG_PM |
| 159 | static int clevo_mail_led_suspend(struct platform_device *dev, |
| 160 | pm_message_t state) |
| 161 | { |
| 162 | led_classdev_suspend(&clevo_mail_led); |
| 163 | return 0; |
| 164 | } |
| 165 | |
| 166 | static int clevo_mail_led_resume(struct platform_device *dev) |
| 167 | { |
| 168 | led_classdev_resume(&clevo_mail_led); |
| 169 | return 0; |
| 170 | } |
| 171 | #else |
| 172 | #define clevo_mail_led_suspend NULL |
| 173 | #define clevo_mail_led_resume NULL |
| 174 | #endif |
| 175 | |
| 176 | static struct platform_driver clevo_mail_led_driver = { |
| 177 | .probe = clevo_mail_led_probe, |
| 178 | .remove = clevo_mail_led_remove, |
| 179 | .suspend = clevo_mail_led_suspend, |
| 180 | .resume = clevo_mail_led_resume, |
| 181 | .driver = { |
| 182 | .name = KBUILD_MODNAME, |
Kay Sievers | 3c4ded9 | 2008-04-15 14:34:30 -0700 | [diff] [blame] | 183 | .owner = THIS_MODULE, |
Márton Németh | cec035d | 2007-10-31 11:46:41 +0100 | [diff] [blame] | 184 | }, |
| 185 | }; |
| 186 | |
| 187 | static int __init clevo_mail_led_init(void) |
| 188 | { |
| 189 | int error = 0; |
| 190 | int count = 0; |
| 191 | |
| 192 | /* Check with the help of DMI if we are running on supported hardware */ |
| 193 | if (!nodetect) { |
| 194 | count = dmi_check_system(mail_led_whitelist); |
| 195 | } else { |
| 196 | count = 1; |
| 197 | printk(KERN_ERR KBUILD_MODNAME ": Skipping DMI detection. " |
| 198 | "If the driver works on your hardware please " |
| 199 | "report model and the output of dmidecode in tracker " |
| 200 | "at http://sourceforge.net/projects/clevo-mailled/\n"); |
| 201 | } |
| 202 | |
| 203 | if (!count) |
| 204 | return -ENODEV; |
| 205 | |
| 206 | pdev = platform_device_register_simple(KBUILD_MODNAME, -1, NULL, 0); |
| 207 | if (!IS_ERR(pdev)) { |
| 208 | error = platform_driver_probe(&clevo_mail_led_driver, |
| 209 | clevo_mail_led_probe); |
| 210 | if (error) { |
| 211 | printk(KERN_ERR KBUILD_MODNAME |
| 212 | ": Can't probe platform driver\n"); |
| 213 | platform_device_unregister(pdev); |
| 214 | } |
| 215 | } else |
| 216 | error = PTR_ERR(pdev); |
| 217 | |
| 218 | return error; |
| 219 | } |
| 220 | |
| 221 | static void __exit clevo_mail_led_exit(void) |
| 222 | { |
| 223 | platform_device_unregister(pdev); |
| 224 | platform_driver_unregister(&clevo_mail_led_driver); |
| 225 | |
| 226 | clevo_mail_led_set(NULL, LED_OFF); |
| 227 | } |
| 228 | |
| 229 | module_init(clevo_mail_led_init); |
| 230 | module_exit(clevo_mail_led_exit); |