| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Thu, 16 Oct 2008 11:10:16 +0200
From: Pavel Machek <pavel@...e.cz>
To: Eric Piel <eric.piel@...mplin-utc.net>, lm-sensors@...sensors.org,
kernel list <linux-kernel@...r.kernel.org>, rpurdie@...ys.net,
Andrew Morton <akpm@...l.org>
Cc: Thomas Renninger <trenn@...e.de>, Yan Burman <burman.yan@...il.com>
Subject: Driver for HP harddisk protection LED
Hi!
HP notebooks contain accelerometer-based disk protection subsystem,
and LED that indicates hard disk is protected. This is driver for the
LED part.
Signed-off-by: Pavel Machek <pavel@...e.cz>
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 27fe7be..d7b789f 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -132,6 +132,13 @@ config LEDS_CM_X270
help
This option enables support for the CM-X270 LEDs.
+config LEDS_HP_DISK
+ tristate "LED Support for disk protection LED on HP notebooks"
+ depends on LEDS_CLASS && ACPI
+ help
+ This option enable support for disk protection LED, found on
+ newer HP notebooks.
+
config LEDS_CLEVO_MAIL
tristate "Mail LED on Clevo notebook (EXPERIMENTAL)"
depends on LEDS_CLASS && X86 && SERIO_I8042 && DMI && EXPERIMENTAL
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index a18e762..b0ed3d2 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -24,6 +24,7 @@ obj-$(CONFIG_LEDS_CLEVO_MAIL) += leds-c
obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o
obj-$(CONFIG_LEDS_FSG) += leds-fsg.o
obj-$(CONFIG_LEDS_PCA955X) += leds-pca955x.o
+obj-$(CONFIG_LEDS_HP_DISK) += leds-hp-disk.o
# LED Triggers
obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
diff --git a/drivers/leds/leds-hp-disk.c b/drivers/leds/leds-hp-disk.c
new file mode 100644
index 0000000..6ca97e4
--- /dev/null
+++ b/drivers/leds/leds-hp-disk.c
@@ -0,0 +1,155 @@
+/*
+ * leds-hp-disk.c - driver for HP "hard disk protection" LED
+ *
+ * Copyright (C) 2008 Pavel Machek
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/dmi.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/input.h>
+#include <linux/kthread.h>
+#include <linux/version.h>
+#include <linux/leds.h>
+#include <acpi/acpi_drivers.h>
+
+#define DRIVER_NAME "leds-hp-disk"
+#define ACPI_MDPS_CLASS "led"
+
+/* For automatic insertion of the module */
+static struct acpi_device_id hpled_device_ids[] = {
+ {"HPQ0004", 0}, /* HP Mobile Data Protection System PNP */
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, hpled_device_ids);
+
+struct acpi_hpled {
+ struct acpi_device *device; /* The ACPI device */
+};
+
+static struct acpi_hpled adev;
+
+static acpi_status hpled_acpi_write(acpi_handle handle, int reg)
+{
+ unsigned long ret; /* Not used when writting */
+ union acpi_object in_obj[1];
+ struct acpi_object_list args = { 1, in_obj };
+
+ in_obj[0].type = ACPI_TYPE_INTEGER;
+ in_obj[0].integer.value = reg;
+
+ return acpi_evaluate_integer(handle, "ALED", &args, &ret);
+}
+
+static void hpled_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ hpled_acpi_write(adev.device->handle, !!value);
+}
+
+static struct led_classdev hpled_led = {
+ .name = "hp:red:hddprotection",
+ .default_trigger = "heartbeat",
+ .brightness_set = hpled_set,
+};
+
+#ifdef CONFIG_PM
+static int hpled_suspend(struct acpi_device *dev, pm_message_t state)
+{
+ led_classdev_suspend(&hpled_led);
+ return 0;
+}
+
+static int hpled_resume(struct acpi_device *dev)
+{
+ led_classdev_resume(&hpled_led);
+ return 0;
+}
+#endif
+
+static int hpled_add(struct acpi_device *device)
+{
+ int ret;
+
+ if (!device)
+ return -EINVAL;
+
+ adev.device = device;
+ strcpy(acpi_device_name(device), DRIVER_NAME);
+ strcpy(acpi_device_class(device), ACPI_MDPS_CLASS);
+ acpi_driver_data(device) = &adev;
+
+ ret = led_classdev_register(NULL, &hpled_led);
+ return ret;
+}
+
+static int hpled_remove(struct acpi_device *device, int type)
+{
+ if (!device)
+ return -EINVAL;
+
+ led_classdev_unregister(&hpled_led);
+ return 0;
+}
+
+
+
+static struct acpi_driver leds_hp_driver = {
+ .name = DRIVER_NAME,
+ .class = ACPI_MDPS_CLASS,
+ .ids = hpled_device_ids,
+ .ops = {
+ .add = hpled_add,
+ .remove = hpled_remove,
+#ifdef CONFIG_PM
+ .suspend = hpled_suspend,
+ .resume = hpled_resume,
+#endif
+ }
+};
+
+static int __init hpled_init_module(void)
+{
+ int ret;
+
+ if (acpi_disabled)
+ return -ENODEV;
+
+ ret = acpi_bus_register_driver(&leds_hp_driver);
+ if (ret < 0)
+ return ret;
+
+ printk(KERN_INFO DRIVER_NAME " driver loaded.\n");
+
+ return 0;
+}
+
+static void __exit hpled_exit_module(void)
+{
+ acpi_bus_unregister_driver(&leds_hp_driver);
+}
+
+MODULE_DESCRIPTION("Driver for HP disk protection LED");
+MODULE_AUTHOR("Pavel Machek <pavel@...e.cz>");
+MODULE_LICENSE("GPL");
+
+module_init(hpled_init_module);
+module_exit(hpled_exit_module);
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists