3 files changed, 380 insertions, 0 deletions

diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 55ca39dea42e..98ec6bd9226e 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -365,6 +365,16 @@ config ACPI_WMI
           It is safe to enable this driver even if your DSDT doesn't define
           any ACPI-WMI devices.
 
+config MSI_WMI
+        tristate "MSI WMI extras"
+        depends on ACPI_WMI
+        depends on INPUT
+        help
+         Say Y here if you want to support WMI-based hotkeys on MSI laptops.
+
+         To compile this driver as a module, choose M here: the module will
+         be called msi-wmi.
+
 config ACPI_ASUS
         tristate "ASUS/Medion Laptop Extras (DEPRECATED)"
         depends on ACPI
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index d1c16210a512..13aa37310f33 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -18,6 +18,7 @@ obj-$(CONFIG_FUJITSU_LAPTOP)	+= fujitsu-laptop.o
 obj-$(CONFIG_PANASONIC_LAPTOP)  += panasonic-laptop.o
 obj-$(CONFIG_INTEL_MENLOW)      += intel_menlow.o
 obj-$(CONFIG_ACPI_WMI)          += wmi.o
+obj-$(CONFIG_MSI_WMI)           += msi-wmi.o
 obj-$(CONFIG_ACPI_ASUS)         += asus_acpi.o
 obj-$(CONFIG_TOPSTAR_LAPTOP)    += topstar-laptop.o
 obj-$(CONFIG_ACPI_TOSHIBA)      += toshiba_acpi.o
diff --git a/drivers/platform/x86/msi-wmi.c b/drivers/platform/x86/msi-wmi.c
new file mode 100644
index 000000000000..7e0dab659752
--- /dev/null
+++ b/drivers/platform/x86/msi-wmi.c
@@ -0,0 +1,369 @@
+/*
+ * MSI WMI hotkeys
+ *
+ * Copyright (C) 2009 Novell <trenn@suse.de>
+ *
+ * Most stuff taken over from hp-wmi
+ *
+ *  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/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/input.h>
+#include <acpi/acpi_drivers.h>
+#include <linux/acpi.h>
+#include <linux/string.h>
+#include <linux/hrtimer.h>
+#include <linux/backlight.h>
+
+MODULE_AUTHOR("Thomas Renninger <trenn@suse.de>");
+MODULE_DESCRIPTION("MSI laptop WMI hotkeys driver");
+MODULE_LICENSE("GPL");
+
+static int debug;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Set this to 1 to let the driver be more verbose");
+
+MODULE_ALIAS("wmi:551A1F84-FBDD-4125-91DB-3EA8F44F1D45");
+MODULE_ALIAS("wmi:B6F3EEF2-3D2F-49DC-9DE3-85BCE18C62F2");
+
+/* Temporary workaround until the WMI sysfs interface goes in
+                { "svn", DMI_SYS_VENDOR },
+                { "pn",  DMI_PRODUCT_NAME },
+                { "pvr", DMI_PRODUCT_VERSION },
+                { "rvn", DMI_BOARD_VENDOR },
+                { "rn",  DMI_BOARD_NAME },
+*/
+
+MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-6638:*");
+
+#define DRV_NAME "msi-wmi"
+#define DRV_PFX DRV_NAME ": "
+
+#define MSIWMI_BIOS_GUID "551A1F84-FBDD-4125-91DB-3EA8F44F1D45"
+#define MSIWMI_EVENT_GUID "B6F3EEF2-3D2F-49DC-9DE3-85BCE18C62F2"
+
+#define dprintk(msg...) do {                    \
+        if (debug)                              \
+                printk(KERN_INFO DRV_PFX  msg); \
+        } while (0)
+
+struct key_entry {
+        char type;              /* See KE_* below */
+        u16 code;
+        u16 keycode;
+        int instance;
+        ktime_t last_pressed;
+};
+
+/*
+ * KE_KEY the only used key type, but keep this, others might also
+ * show up in the future. Compare with hp-wmi.c
+ */
+enum { KE_KEY, KE_END };
+
+static struct key_entry msi_wmi_keymap[] = {
+        { KE_KEY, 0xd0, KEY_BRIGHTNESSUP,   0, {0, } },
+        { KE_KEY, 0xd1, KEY_BRIGHTNESSDOWN, 1, {0, } },
+        { KE_KEY, 0xd2, KEY_VOLUMEUP,   2, {0, } },
+        { KE_KEY, 0xd3, KEY_VOLUMEDOWN, 3, {0, } },
+        { KE_END, 0}
+};
+
+struct backlight_device *backlight;
+
+static int backlight_map[] = { 0x00, 0x33, 0x66, 0x99, 0xCC, 0xFF };
+
+static struct input_dev *msi_wmi_input_dev;
+
+static int msi_wmi_query_block(int instance, int *ret)
+{
+        acpi_status status;
+        union acpi_object *obj;
+
+        struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+
+        status = wmi_query_block(MSIWMI_BIOS_GUID, instance, &output);
+
+        obj = output.pointer;
+
+        if (!obj || obj->type != ACPI_TYPE_INTEGER) {
+                if (obj) {
+                        printk(KERN_ERR DRV_PFX "query block returned object "
+                               "type: %d - buffer length:%d\n", obj->type,
+                               obj->type == ACPI_TYPE_BUFFER ?
+                               obj->buffer.length : 0);
+                }
+                kfree(obj);
+                return -EINVAL;
+        }
+        *ret = obj->integer.value;
+        kfree(obj);
+        return 0;
+}
+
+static int msi_wmi_set_block(int instance, int value)
+{
+        acpi_status status;
+
+        struct acpi_buffer input = { sizeof(int), &value };
+
+        dprintk("Going to set block of instance: %d - value: %d\n",
+                instance, value);
+
+        status = wmi_set_block(MSIWMI_BIOS_GUID, instance, &input);
+
+        return ACPI_SUCCESS(status) ? 0 : 1;
+}
+
+static int bl_get(struct backlight_device *bd)
+{
+        int level, err, ret = 0;
+
+        /* Instance 1 is "get backlight", cmp with DSDT */
+        err = msi_wmi_query_block(1, &ret);
+        if (err)
+                printk(KERN_ERR DRV_PFX "Could not query backlight: %d\n", err);
+        dprintk("Get: Query block returned: %d\n", ret);
+        for (level = 0; level < ARRAY_SIZE(backlight_map); level++) {
+                if (backlight_map[level] == ret) {
+                        dprintk("Current backlight level: 0x%X - index: %d\n",
+                                backlight_map[level], level);
+                        break;
+                }
+        }
+        if (level == ARRAY_SIZE(backlight_map)) {
+                printk(KERN_ERR DRV_PFX "get: Invalid brightness value: 0x%X\n",
+                       ret);
+                return -EINVAL;
+        }
+        return level;
+}
+
+static int bl_set_status(struct backlight_device *bd)
+{
+        int bright = bd->props.brightness;
+        if (bright >= ARRAY_SIZE(backlight_map) || bright < 0)