[PATCH 1/4] leds-clevo-mail: driver for Clevo mail LED
From: Németh Márton
Date: Sun Oct 28 2007 - 06:26:41 EST
From: Márton Németh <nm127@xxxxxxxxxxx>
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 <nm127@xxxxxxxxxxx>
---
diff -uprN linux-2.6.24-rc1.orig/drivers/leds/Kconfig linux-2.6.24-rc1.a/drivers/leds/Kconfig
--- linux-2.6.24-rc1.orig/drivers/leds/Kconfig 2007-10-28 09:14:14.000000000 +0100
+++ linux-2.6.24-rc1.a/drivers/leds/Kconfig 2007-10-28 09:13:13.000000000 +0100
@@ -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 -uprN linux-2.6.24-rc1.orig/drivers/leds/leds-clevo-mail.c linux-2.6.24-rc1.a/drivers/leds/leds-clevo-mail.c
--- linux-2.6.24-rc1.orig/drivers/leds/leds-clevo-mail.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.24-rc1.a/drivers/leds/leds-clevo-mail.c 2007-10-28 10:18:42.000000000 +0100
@@ -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@xxxxxxxxxxx>");
+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);
diff -uprN linux-2.6.24-rc1.orig/drivers/leds/Makefile linux-2.6.24-rc1.a/drivers/leds/Makefile
--- linux-2.6.24-rc1.orig/drivers/leds/Makefile 2007-10-28 09:01:56.000000000 +0100
+++ linux-2.6.24-rc1.a/drivers/leds/Makefile 2007-10-28 07:59:42.000000000 +0100
@@ -19,6 +19,7 @@ obj-$(CONFIG_LEDS_COBALT_QUBE) += leds-
obj-$(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
-
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