Create a driver to support WMI found on MSI Wind laptops. This driver
allows us to receive some additional keycodes for keys that are not
handled without this driver.
Signed-off-by: Maxim Mikityanskiy <maxtram95@xxxxxxxxx>
---
drivers/platform/x86/Kconfig | 13 +++
drivers/platform/x86/Makefile | 1 +
drivers/platform/x86/msi-wind-wmi.c | 169 ++++++++++++++++++++++++++++++++++++
3 files changed, 183 insertions(+)
create mode 100644 drivers/platform/x86/msi-wind-wmi.c
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index c86bae8..46f269e5 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -561,6 +561,19 @@ config MSI_WMI
To compile this driver as a module, choose M here: the module will
be called msi-wmi.
+config MSI_WIND_WMI
+ tristate "MSI Wind WMI Driver"
+ depends on ACPI_WMI
+ depends on INPUT
+ select INPUT_SPARSEKMAP
+ ---help---
+ Say Y here if you want to support WMI-based hotkeys on MSI Wind
+ laptops. MSI Wind WMI differs from WMI found on other MSI laptops, so
+ say Y here if you have MSI Wind, otherwise select "MSI WMI extras".
+
+ To compile this driver as a module, choose M here: the module will
+ be called msi-wind-wmi.
+
config TOPSTAR_LAPTOP
tristate "Topstar Laptop Extras"
depends on ACPI
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index bf7e4f9..44389c0 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -30,6 +30,7 @@ obj-$(CONFIG_INTEL_MENLOW) += intel_menlow.o
obj-$(CONFIG_ACPI_WMI) += wmi.o
obj-$(CONFIG_MSI_WMI) += msi-wmi.o
obj-$(CONFIG_TOPSTAR_LAPTOP) += topstar-laptop.o
+obj-$(CONFIG_MSI_WIND_WMI) += msi-wind-wmi.o
# toshiba_acpi must link after wmi to ensure that wmi devices are found
# before toshiba_acpi initializes
diff --git a/drivers/platform/x86/msi-wind-wmi.c b/drivers/platform/x86/msi-wind-wmi.c
new file mode 100644
index 0000000..4f19434
--- /dev/null
+++ b/drivers/platform/x86/msi-wind-wmi.c
@@ -0,0 +1,169 @@
+/*
+ * MSI Wind WMI hotkeys
+ *
+ * Copyright (C) 2012 Maxim Mikityanskiy <maxtram95@xxxxxxxxx>
+ *
+ * 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
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/acpi.h>
+
+MODULE_AUTHOR("Maxim Mikityanskiy <maxtram95@xxxxxxxxx>");
+MODULE_DESCRIPTION("MSI Wind laptop WMI hotkeys driver");
+MODULE_LICENSE("GPL");
+
+#define WMI_EVENT_GUID "5B3CC38A-40D9-7245-8AE6-1145B751BE3F"
+
+MODULE_ALIAS("wmi:" WMI_EVENT_GUID);
+
+/* Fn+F3 touchpad toggle */
+#define WIND_KEY_TOUCHPAD 0x08
+/* Fn+F11 Bluetooth toggle */
+#define WIND_KEY_BLUETOOTH 0x56
+/* Fn+F6 webcam toggle */
+#define WIND_KEY_CAMERA 0x57
+/* Fn+F11 Wi-Fi toggle */
+#define WIND_KEY_WLAN 0x5f
+/* Fn+F10 turbo mode toggle */
+#define WIND_KEY_TURBO 0x60
+/* Fn+F10 ECO mode toggle */
+#define WIND_KEY_ECO 0x69
+
+static struct key_entry wind_keymap[] = {
+ /* These keys work without WMI. Ignore them to avoid double keycodes */
+ { KE_IGNORE, WIND_KEY_TOUCHPAD, { KEY_TOUCHPAD_TOGGLE } },
+ { KE_IGNORE, WIND_KEY_BLUETOOTH, { KEY_BLUETOOTH } },
+ { KE_IGNORE, WIND_KEY_CAMERA, { KEY_CAMERA } },
+ { KE_IGNORE, WIND_KEY_WLAN, { KEY_WLAN } },
+ /* These are keys that should be handled via WMI */
+ { KE_KEY, WIND_KEY_TURBO, { KEY_PROG1 } },
+ { KE_KEY, WIND_KEY_ECO, { KEY_PROG2 } },
+ { KE_END, 0 }
+};
+
+static struct input_dev *wind_input_dev;
+
+static void wind_wmi_notify(u32 value, void *context)
+{
+ struct acpi_buffer response = {
+ .length = ACPI_ALLOCATE_BUFFER,
+ .pointer = NULL
+ };
+ acpi_status status = wmi_get_event_data(value, &response);
+ union acpi_object *obj = response.pointer;
+ int code;
+
+ if (status != AE_OK) {
+ pr_warn("Bad event status %#x\n", status);
+ return;
+ }
+
+ if (!obj || obj->type != ACPI_TYPE_INTEGER) {
+ pr_warn("Unknown event received\n");
+ goto wind_wmi_notify_free;
+ }
+
+ code = obj->integer.value;
+ pr_debug("Event code: %#x\n", code);
+
+ if (code == 0x00 || code == 0x62 || code == 0x63) {
+ /* Unknown events - drop them for now */
+ goto wind_wmi_notify_free;
+ }
+
+ if (!sparse_keymap_report_event(wind_input_dev, code, 1, true))
+ pr_warn("Unknown key %#x pressed\n", code);
+
+wind_wmi_notify_free:
+ kfree(response.pointer);
+}
+
+static int __init wind_input_setup(void)
+{
+ int err;
+
+ wind_input_dev = input_allocate_device();
+ if (!wind_input_dev)
+ return -ENOMEM;
+
+ wind_input_dev->name = "MSI WMI hotkeys";
+ wind_input_dev->phys = "wmi/input0";
+ wind_input_dev->id.bustype = BUS_HOST;
+
+ err = sparse_keymap_setup(wind_input_dev, wind_keymap, NULL);
+ if (err)
+ goto wind_input_setup_free_dev;
+
+ err = input_register_device(wind_input_dev);
+ if (err)
+ goto wind_input_setup_free_keymap;
+
+ return 0;
+
+wind_input_setup_free_keymap:
+ sparse_keymap_free(wind_input_dev);
+wind_input_setup_free_dev:
+ input_free_device(wind_input_dev);
+ return err;
+}
+
+static int __init wind_wmi_init(void)
+{
+ int err;
+
+ if (!wmi_has_guid(WMI_EVENT_GUID)) {
+ pr_err("No MSI Wind WMI found\n");
+ return -ENODEV;
+ }
+
+ err = wind_input_setup();
+ if (err) {
+ pr_err("Unable to setup input device\n");
+ return err;
+ }
+
+ if (ACPI_FAILURE(wmi_install_notify_handler(WMI_EVENT_GUID,
+ wind_wmi_notify, NULL))) {
+ pr_err("Unable to install WMI notify handler\n");
+ err = -EIO;
+ goto wind_wmi_init_unregister_input;
+ }
+
+ pr_debug("Event handler installed\n");
+
+ return 0;
+
+wind_wmi_init_unregister_input:
+ input_unregister_device(wind_input_dev);
+ sparse_keymap_free(wind_input_dev);
+ input_free_device(wind_input_dev);
+ return err;
+}
+
+static void __exit wind_wmi_exit(void)
+{
+ wmi_remove_notify_handler(WMI_EVENT_GUID);
+ input_unregister_device(wind_input_dev);
+ sparse_keymap_free(wind_input_dev);
+ input_free_device(wind_input_dev);
+}
+
+module_init(wind_wmi_init);
+module_exit(wind_wmi_exit);
--
1.8.0
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