From cec035de8265b18252742ef359b12e9694641112 Mon Sep 17 00:00:00 2001 From: Márton Németh Date: Wed, 31 Oct 2007 11:46:41 +0100 Subject: leds: Add clevo notebook LED driver MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The driver supports the mail LED commonly found on different Clevo notebooks. The driver access the LED through the i8042 hardware which is handled by the input subsystem. Signed-off-by: Márton Németh Signed-off-by: Richard Purdie --- drivers/leds/leds-clevo-mail.c | 182 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 182 insertions(+) create mode 100644 drivers/leds/leds-clevo-mail.c (limited to 'drivers/leds/leds-clevo-mail.c') diff --git a/drivers/leds/leds-clevo-mail.c b/drivers/leds/leds-clevo-mail.c new file mode 100644 index 00000000000..50aaa0b3381 --- /dev/null +++ b/drivers/leds/leds-clevo-mail.c @@ -0,0 +1,182 @@ + +#include + +#include +#include +#include + +#include +#include + +#include + +#define CLEVO_MAIL_LED_OFF 0x0084 +#define CLEVO_MAIL_LED_BLINK_1HZ 0x008A +#define CLEVO_MAIL_LED_BLINK_0_5HZ 0x0083 + +MODULE_AUTHOR("Márton Németh "); +MODULE_DESCRIPTION("Clevo mail LED driver"); +MODULE_LICENSE("GPL"); + +static unsigned int __initdata nodetect; +module_param_named(nodetect, nodetect, bool, 0); +MODULE_PARM_DESC(nodetect, "Skip DMI hardware detection"); + +static struct platform_device *pdev; + +static int __init clevo_mail_led_dmi_callback(const struct dmi_system_id *id) +{ + printk(KERN_INFO KBUILD_MODNAME ": '%s' found\n", id->ident); + return 1; +} + +/* + * struct mail_led_whitelist - List of known good models + * + * Contains the known good models this driver is compatible with. + * When adding a new model try to be as strict as possible. This + * makes it possible to keep the false positives (the model is + * detected as working, but in reality it is not) as low as + * possible. + */ +static struct dmi_system_id __initdata mail_led_whitelist[] = { + { + .callback = clevo_mail_led_dmi_callback, + .ident = "Clevo D410J", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "VIA"), + DMI_MATCH(DMI_PRODUCT_NAME, "K8N800"), + DMI_MATCH(DMI_PRODUCT_VERSION, "VT8204B") + } + }, + { + .callback = clevo_mail_led_dmi_callback, + .ident = "Clevo M5x0N", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "CLEVO Co."), + DMI_MATCH(DMI_PRODUCT_NAME, "M5x0N") + } + }, + { + .callback = clevo_mail_led_dmi_callback, + .ident = "Positivo Mobile", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "CLEVO Co. "), + DMI_MATCH(DMI_BOARD_NAME, "M5X0V "), + DMI_MATCH(DMI_PRODUCT_NAME, "Positivo Mobile"), + DMI_MATCH(DMI_PRODUCT_VERSION, "VT6198") + } + }, + { + .callback = clevo_mail_led_dmi_callback, + .ident = "Clevo D410V", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "Clevo, Co."), + DMI_MATCH(DMI_BOARD_NAME, "D400V/D470V"), + DMI_MATCH(DMI_BOARD_VERSION, "SS78B"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Rev. A1") + } + }, + { } +}; + +static void clevo_mail_led_set(struct led_classdev *led_cdev, + enum led_brightness value) +{ + if (value == LED_OFF) + i8042_command(NULL, CLEVO_MAIL_LED_OFF); + else if (value <= LED_HALF) + i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ); + else + i8042_command(NULL, CLEVO_MAIL_LED_BLINK_1HZ); + +} + +static struct led_classdev clevo_mail_led = { + .name = "clevo", + .brightness_set = clevo_mail_led_set, +}; + +static int __init clevo_mail_led_probe(struct platform_device *pdev) +{ + return led_classdev_register(&pdev->dev, &clevo_mail_led); +} + +static int clevo_mail_led_remove(struct platform_device *pdev) +{ + led_classdev_unregister(&clevo_mail_led); + return 0; +} + +#ifdef CONFIG_PM +static int clevo_mail_led_suspend(struct platform_device *dev, + pm_message_t state) +{ + led_classdev_suspend(&clevo_mail_led); + return 0; +} + +static int clevo_mail_led_resume(struct platform_device *dev) +{ + led_classdev_resume(&clevo_mail_led); + return 0; +} +#else +#define clevo_mail_led_suspend NULL +#define clevo_mail_led_resume NULL +#endif + +static struct platform_driver clevo_mail_led_driver = { + .probe = clevo_mail_led_probe, + .remove = clevo_mail_led_remove, + .suspend = clevo_mail_led_suspend, + .resume = clevo_mail_led_resume, + .driver = { + .name = KBUILD_MODNAME, + }, +}; + +static int __init clevo_mail_led_init(void) +{ + int error = 0; + int count = 0; + + /* Check with the help of DMI if we are running on supported hardware */ + if (!nodetect) { + count = dmi_check_system(mail_led_whitelist); + } else { + count = 1; + printk(KERN_ERR KBUILD_MODNAME ": Skipping DMI detection. " + "If the driver works on your hardware please " + "report model and the output of dmidecode in tracker " + "at http://sourceforge.net/projects/clevo-mailled/\n"); + } + + if (!count) + return -ENODEV; + + pdev = platform_device_register_simple(KBUILD_MODNAME, -1, NULL, 0); + if (!IS_ERR(pdev)) { + error = platform_driver_probe(&clevo_mail_led_driver, + clevo_mail_led_probe); + if (error) { + printk(KERN_ERR KBUILD_MODNAME + ": Can't probe platform driver\n"); + platform_device_unregister(pdev); + } + } else + error = PTR_ERR(pdev); + + return error; +} + +static void __exit clevo_mail_led_exit(void) +{ + platform_device_unregister(pdev); + platform_driver_unregister(&clevo_mail_led_driver); + + clevo_mail_led_set(NULL, LED_OFF); +} + +module_init(clevo_mail_led_init); +module_exit(clevo_mail_led_exit); -- cgit v1.2.3