Signed-off-by: Alex Hung <alex.hung@xxxxxxxxxxxxx>
---
drivers/platform/x86/Kconfig | 11 +++
drivers/platform/x86/Makefile | 1 +
drivers/platform/x86/hp-wireless.c | 145 +++++++++++++++++++++++++++++++++++++
3 files changed, 157 insertions(+)
create mode 100644 drivers/platform/x86/hp-wireless.c
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 36a9e60..6bd5b03 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -208,6 +208,17 @@ config HP_ACCEL
To compile this driver as a module, choose M here: the module will
be called hp_accel.
+config HP_WIRELESS
+ tristate "HP WIRELESS"
+ depends on ACPI
+ depends on INPUT
+ help
+ This driver provides supports for new HP wireless button for Windows 8.
+ On such systems the driver should load automatically (via ACPI alias).
+
+ To compile this driver as a module, choose M here: the module will
+ be called hp-wireless.
+
config HP_WMI
tristate "HP WMI extras"
depends on ACPI_WMI
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index 5dbe193..2f6c4d2 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_DELL_WMI_AIO) += dell-wmi-aio.o
obj-$(CONFIG_ACER_WMI) += acer-wmi.o
obj-$(CONFIG_ACERHDF) += acerhdf.o
obj-$(CONFIG_HP_ACCEL) += hp_accel.o
+obj-$(CONFIG_HP_WIRELESS) += hp-wireless.o
obj-$(CONFIG_HP_WMI) += hp-wmi.o
obj-$(CONFIG_AMILO_RFKILL) += amilo-rfkill.o
obj-$(CONFIG_TC1100_WMI) += tc1100-wmi.o
diff --git a/drivers/platform/x86/hp-wireless.c b/drivers/platform/x86/hp-wireless.c
new file mode 100644
index 0000000..6fbc4f2
--- /dev/null
+++ b/drivers/platform/x86/hp-wireless.c
@@ -0,0 +1,145 @@
+/*
+ * hp-wireless button for Windows 8
+ *
+ * Copyright (C) 2014 Alex Hung
+ *
+ * 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/input.h>
+#include <linux/platform_device.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/acpi.h>
+#include <acpi/acpi_bus.h>
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Alex Hung");
+MODULE_ALIAS("acpi*:HPQ6001:*");
+
+static struct input_dev *hpwl_input_dev;
+
+static const struct key_entry hp_wireless_keymap[] = {
+ { KE_KEY, 0x80, { KEY_RFKILL } },
+};
+
+static const struct acpi_device_id hpwl_ids[] = {
+ {"HPQ6001", 0},
+ {"", 0},
+};
+
+static int hp_wireless_input_setup(void)
+{
+ int err;
+
+ hpwl_input_dev = input_allocate_device();
+ if (!hpwl_input_dev)
+ return -ENOMEM;
+
+ hpwl_input_dev->name = "HP Wireless hotkeys";
+ hpwl_input_dev->phys = "hpq6001/input0";
+ hpwl_input_dev->id.bustype = BUS_HOST;
+
+ err = sparse_keymap_setup(hpwl_input_dev, hp_wireless_keymap, NULL);
+ if (err)
+ goto err_free_dev;
+
+ err = input_register_device(hpwl_input_dev);
+ if (err)
+ goto err_free_keymap;
+
+ return 0;
+
+err_free_keymap:
+ sparse_keymap_free(hpwl_input_dev);
+err_free_dev:
+ input_free_device(hpwl_input_dev);
+ return err;
+}
+
+static void hp_wireless_input_destroy(void)
+{
+ sparse_keymap_free(hpwl_input_dev);
+ input_unregister_device(hpwl_input_dev);
+}
+
+static void hpwl_notify(struct acpi_device *acpi_dev, u32 event)
+{
+ const struct key_entry *key;
+
+ if (event != 0x80) {
+ pr_info("Received unknown event (0x%x)\n", event);
+ return;
+ }
+
+ key = sparse_keymap_entry_from_scancode(hpwl_input_dev, event);
+ if (key)
+ sparse_keymap_report_entry(hpwl_input_dev, key, 1, true);
+ else
+ pr_info("Unknown hotkey pressed\n");
+}
+
+static int hpwl_add(struct acpi_device *device)
+{
+ int err;
+
+ err = hp_wireless_input_setup();
+ return err;
+}
+
+static int hpwl_remove(struct acpi_device *device)
+{
+ hp_wireless_input_destroy();
+ return 0;
+}
+
+static struct acpi_driver hpwl_driver = {
+ .name = "hp-wireless",
+ .owner = THIS_MODULE,
+ .ids = hpwl_ids,
+ .ops = {
+ .add = hpwl_add,
+ .remove = hpwl_remove,
+ .notify = hpwl_notify,
+ },
+};
+
+static int __init hpwl_init(void)
+{
+ int err;
+
+ pr_info("Initializing HPQ6001 module\n");
+ err = acpi_bus_register_driver(&hpwl_driver);
+ if (err) {
+ pr_err("Unable to register HP wireless control driver.\n");
+ goto error_acpi_register;
+ }
+
+ return 0;
+
+error_acpi_register:
+ return err;
+}
+
+static void __exit hpwl_exit(void)
+{
+ pr_info("Exiting HPQ6001 module\n");
+ acpi_bus_unregister_driver(&hpwl_driver);
+}
+
+module_init(hpwl_init);
+module_exit(hpwl_exit);
--
1.8.1.2
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