diff options
| -rw-r--r-- | drivers/leds/Kconfig | 24 | ||||
| -rw-r--r-- | drivers/leds/Makefile | 1 | ||||
| -rw-r--r-- | drivers/leds/leds-clevo-mail.c | 182 |
3 files changed, 207 insertions, 0 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index ec568fa1c6cc..cf3a6d4d9475 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -114,6 +114,30 @@ config LEDS_CM_X270 help This option enables support for the CM-X270 LEDs. +config LEDS_CLEVO_MAIL + tristate "Mail LED on Clevo notebook (EXPERIMENTAL)" + depends on LEDS_CLASS && X86 && SERIO_I8042 && DMI && EXPERIMENTAL + help + This driver makes the mail LED accessible from userspace + programs through the leds subsystem. This LED have three + known mode: off, blink at 0.5Hz and blink at 1Hz. + + As this LED cannot change it's brightness it blinks instead. + The brightness value 0 means off, 1..127 means blink at 0.5Hz + and 128..255 means blink at 1Hz. + + This module can drive the mail LED for the following notebooks: + + Clevo D410J + Clevo D410V + Clevo D400V/D470V (not tested, but might work) + Clevo M540N + Clevo M5x0N (not tested, but might work) + Positivo Mobile (Clevo M5x0V) + + To compile this driver as a module, choose M here: the + module will be called leds-clevo-mail. + comment "LED Triggers" config LEDS_TRIGGERS diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index a60de1b46c2c..e433e2f4e52b 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -19,6 +19,7 @@ obj-$(CONFIG_LEDS_COBALT_QUBE) += leds-cobalt-qube.o obj-$(CONFIG_LEDS_COBALT_RAQ) += leds-cobalt-raq.o obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o obj-$(CONFIG_LEDS_CM_X270) += leds-cm-x270.o +obj-$(CONFIG_LEDS_CLEVO_MAIL) += leds-clevo-mail.o # LED Triggers obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o diff --git a/drivers/leds/leds-clevo-mail.c b/drivers/leds/leds-clevo-mail.c new file mode 100644 index 000000000000..50aaa0b33810 --- /dev/null +++ b/drivers/leds/leds-clevo-mail.c @@ -0,0 +1,182 @@ + +#include <linux/module.h> + +#include <linux/platform_device.h> +#include <linux/err.h> +#include <linux/leds.h> + +#include <linux/io.h> +#include <linux/dmi.h> + +#include <linux/i8042.h> + +#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 <nm127@freemail.hu>"); +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); |