eeepc-wmi: Add support for T101MT Home/Express Gate key

[pandora-kernel.git] / drivers / platform / x86 / eeepc-wmi.c

diff --git a/drivers/platform/x86/eeepc-wmi.c b/drivers/platform/x86/eeepc-wmi.c
index 4aa867a..f41a977 100644 (file)
--- a/drivers/platform/x86/eeepc-wmi.c
+++ b/drivers/platform/x86/eeepc-wmi.c
@@ -56,6 +56,11 @@ MODULE_PARM_DESC(hotplug_wireless,
                 "If your laptop needs that, please report to "
                 "acpi4asus-user@lists.sourceforge.net.");
 
+/* Values for T101MT "Home" key */
+#define HOME_PRESS     0xe4
+#define HOME_HOLD      0xea
+#define HOME_RELEASE   0xe5
+
 static const struct key_entry eeepc_wmi_keymap[] = {
        /* Sleep already handled via generic ACPI code */
        { KE_KEY, 0x30, { KEY_VOLUMEUP } },
@@ -71,6 +76,7 @@ static const struct key_entry eeepc_wmi_keymap[] = {
        { KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } },
        { KE_KEY, 0xe0, { KEY_PROG1 } }, /* Task Manager */
        { KE_KEY, 0xe1, { KEY_F14 } }, /* Change Resolution */
+       { KE_KEY, HOME_PRESS, { KEY_CONFIG } }, /* Home/Express gate key */
        { KE_KEY, 0xe8, { KEY_SCREENLOCK } },
        { KE_KEY, 0xe9, { KEY_BRIGHTNESS_ZERO } },
        { KE_KEY, 0xeb, { KEY_CAMERA_ZOOMOUT } },
@@ -81,6 +87,25 @@ static const struct key_entry eeepc_wmi_keymap[] = {
        { KE_END, 0},
 };
 
+static void eeepc_wmi_key_filter(struct asus_wmi_driver *asus_wmi, int *code,
+                                unsigned int *value, bool *autorelease)
+{
+       switch (*code) {
+       case HOME_PRESS:
+               *value = 1;
+               *autorelease = 0;
+               break;
+       case HOME_HOLD:
+               *code = ASUS_WMI_KEY_IGNORE;
+               break;
+       case HOME_RELEASE:
+               *code = HOME_PRESS;
+               *value = 0;
+               *autorelease = 0;
+               break;
+       }
+}
+
 static acpi_status eeepc_wmi_parse_device(acpi_handle handle, u32 level,
                                                 void *context, void **retval)
 {
@@ -151,6 +176,7 @@ static struct asus_wmi_driver asus_wmi_driver = {
        .keymap = eeepc_wmi_keymap,
        .input_name = "Eee PC WMI hotkeys",
        .input_phys = EEEPC_WMI_FILE "/input0",
+       .key_filter = eeepc_wmi_key_filter,
        .probe = eeepc_wmi_probe,
        .quirks = eeepc_wmi_quirks,
 };