Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 317 insertions, 0 deletions

diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c
new file mode 100644
index 00000000..fa9a2171
--- /dev/null
+++ b/drivers/platform/x86/dell-wmi.c
@@ -0,0 +1,317 @@
+/*
+ * Dell WMI hotkeys
+ *
+ * Copyright (C) 2008 Red Hat <mjg@redhat.com>
+ *
+ * Portions based on wistron_btns.c:
+ * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
+ * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
+ * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
+ *
+ *  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/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <acpi/acpi_drivers.h>
+#include <linux/acpi.h>
+#include <linux/string.h>
+#include <linux/dmi.h>
+
+MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
+MODULE_DESCRIPTION("Dell laptop WMI hotkeys driver");
+MODULE_LICENSE("GPL");
+
+#define DELL_EVENT_GUID "9DBB5994-A997-11DA-B012-B622A1EF5492"
+
+static int acpi_video;
+
+MODULE_ALIAS("wmi:"DELL_EVENT_GUID);
+
+/*
+ * Certain keys are flagged as KE_IGNORE. All of these are either
+ * notifications (rather than requests for change) or are also sent
+ * via the keyboard controller so should not be sent again.
+ */
+
+static const struct key_entry dell_wmi_legacy_keymap[] __initconst = {
+	{ KE_IGNORE, 0x003a, { KEY_CAPSLOCK } },
+
+	{ KE_KEY, 0xe045, { KEY_PROG1 } },
+	{ KE_KEY, 0xe009, { KEY_EJECTCD } },
+
+	/* These also contain the brightness level at offset 6 */
+	{ KE_KEY, 0xe006, { KEY_BRIGHTNESSUP } },
+	{ KE_KEY, 0xe005, { KEY_BRIGHTNESSDOWN } },
+
+	/* Battery health status button */
+	{ KE_KEY, 0xe007, { KEY_BATTERY } },
+
+	/* This is actually for all radios. Although physically a
+	 * switch, the notification does not provide an indication of
+	 * state and so it should be reported as a key */
+	{ KE_KEY, 0xe008, { KEY_WLAN } },
+
+	/* The next device is at offset 6, the active devices are at
+	   offset 8 and the attached devices at offset 10 */
+	{ KE_KEY, 0xe00b, { KEY_SWITCHVIDEOMODE } },
+
+	{ KE_IGNORE, 0xe00c, { KEY_KBDILLUMTOGGLE } },
+
+	/* BIOS error detected */
+	{ KE_IGNORE, 0xe00d, { KEY_RESERVED } },
+
+	/* Wifi Catcher */
+	{ KE_KEY, 0xe011, {KEY_PROG2 } },
+
+	/* Ambient light sensor toggle */
+	{ KE_IGNORE, 0xe013, { KEY_RESERVED } },
+
+	{ KE_IGNORE, 0xe020, { KEY_MUTE } },
+
+	/* Shortcut and audio panel keys */
+	{ KE_IGNORE, 0xe025, { KEY_RESERVED } },
+	{ KE_IGNORE, 0xe026, { KEY_RESERVED } },
+
+	{ KE_IGNORE, 0xe02e, { KEY_VOLUMEDOWN } },
+	{ KE_IGNORE, 0xe030, { KEY_VOLUMEUP } },
+	{ KE_IGNORE, 0xe033, { KEY_KBDILLUMUP } },
+	{ KE_IGNORE, 0xe034, { KEY_KBDILLUMDOWN } },
+	{ KE_IGNORE, 0xe03a, { KEY_CAPSLOCK } },
+	{ KE_IGNORE, 0xe045, { KEY_NUMLOCK } },
+	{ KE_IGNORE, 0xe046, { KEY_SCROLLLOCK } },
+	{ KE_IGNORE, 0xe0f7, { KEY_MUTE } },
+	{ KE_IGNORE, 0xe0f8, { KEY_VOLUMEDOWN } },
+	{ KE_IGNORE, 0xe0f9, { KEY_VOLUMEUP } },
+	{ KE_END, 0 }
+};
+
+static bool dell_new_hk_type;
+
+struct dell_bios_keymap_entry {
+	u16 scancode;
+	u16 keycode;
+};
+
+struct dell_bios_hotkey_table {
+	struct dmi_header header;
+	struct dell_bios_keymap_entry keymap[];
+
+};
+
+static const struct dell_bios_hotkey_table *dell_bios_hotkey_table;
+
+static const u16 bios_to_linux_keycode[256] __initconst = {
+
+	KEY_MEDIA,	KEY_NEXTSONG,	KEY_PLAYPAUSE, KEY_PREVIOUSSONG,
+	KEY_STOPCD,	KEY_UNKNOWN,	KEY_UNKNOWN,	KEY_UNKNOWN,
+	KEY_WWW,	KEY_UNKNOWN,	KEY_VOLUMEDOWN, KEY_MUTE,
+	KEY_VOLUMEUP,	KEY_UNKNOWN,	KEY_BATTERY,	KEY_EJECTCD,
+	KEY_UNKNOWN,	KEY_SLEEP,	KEY_PROG1, KEY_BRIGHTNESSDOWN,
+	KEY_BRIGHTNESSUP,	KEY_UNKNOWN,	KEY_KBDILLUMTOGGLE,
+	KEY_UNKNOWN,	KEY_SWITCHVIDEOMODE,	KEY_UNKNOWN, KEY_UNKNOWN,
+	KEY_SWITCHVIDEOMODE,	KEY_UNKNOWN,	KEY_UNKNOWN, KEY_PROG2,
+	KEY_UNKNOWN, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	KEY_PROG3
+};
+
+static struct input_dev *dell_wmi_input_dev;
+
+static void dell_wmi_notify(u32 value, void *context)
+{
+	struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
+	union acpi_object *obj;
+	acpi_status status;
+
+	status = wmi_get_event_data(value, &response);
+	if (status != AE_OK) {
+		pr_info("bad event status 0x%x\n", status);
+		return;
+	}
+
+	obj = (union acpi_object *)response.pointer;
+
+	if (obj && obj->type == ACPI_TYPE_BUFFER) {
+		const struct key_entry *key;
+		int reported_key;
+		u16 *buffer_entry = (u16 *)obj->buffer.pointer;
+
+		if (dell_new_hk_type && (buffer_entry[1] != 0x10)) {
+			pr_info("Received unknown WMI event (0x%x)\n",
+				buffer_entry[1]);
+			kfree(obj);
+			return;
+		}
+
+		if (dell_new_hk_type || buffer_entry[1] == 0x0)
+			reported_key = (int)buffer_entry[2];
+		else
+			reported_key = (int)buffer_entry[1] & 0xffff;
+
+		key = sparse_keymap_entry_from_scancode(dell_wmi_input_dev,
+							reported_key);
+		if (!key) {
+			pr_info("Unknown key %x pressed\n", reported_key);
+		} else if ((key->keycode == KEY_BRIGHTNESSUP ||
+			    key->keycode == KEY_BRIGHTNESSDOWN) && acpi_video) {
+			/* Don't report brightness notifications that will also
+			 * come via ACPI */
+			;
+		} else {
+			sparse_keymap_report_entry(dell_wmi_input_dev, key,
+						   1, true);
+		}
+	}
+	kfree(obj);
+}
+
+static const struct key_entry * __init dell_wmi_prepare_new_keymap(void)
+{
+	int hotkey_num = (dell_bios_hotkey_table->header.length - 4) /
+				sizeof(struct dell_bios_keymap_entry);
+	struct key_entry *keymap;
+	int i;
+
+	keymap = kcalloc(hotkey_num + 1, sizeof(struct key_entry), GFP_KERNEL);
+	if (!keymap)
+		return NULL;
+
+	for (i = 0; i < hotkey_num; i++) {
+		const struct dell_bios_keymap_entry *bios_entry =
+					&dell_bios_hotkey_table->keymap[i];
+		keymap[i].type = KE_KEY;
+		keymap[i].code = bios_entry->scancode;
+		keymap[i].keycode = bios_entry->keycode < 256 ?
+				    bios_to_linux_keycode[bios_entry->keycode] :
+				    KEY_RESERVED;
+	}
+
+	keymap[hotkey_num].type = KE_END;
+
+	return keymap;
+}
+
+static int __init dell_wmi_input_setup(void)
+{
+	int err;
+
+	dell_wmi_input_dev = input_allocate_device();
+	if (!dell_wmi_input_dev)
+		return -ENOMEM;
+
+	dell_wmi_input_dev->name = "Dell WMI hotkeys";
+	dell_wmi_input_dev->phys = "wmi/input0";
+	dell_wmi_input_dev->id.bustype = BUS_HOST;
+
+	if (dell_new_hk_type) {
+		const struct key_entry *keymap = dell_wmi_prepare_new_keymap();
+		if (!keymap) {
+			err = -ENOMEM;
+			goto err_free_dev;
+		}
+
+		err = sparse_keymap_setup(dell_wmi_input_dev, keymap, NULL);
+
+		/*
+		 * Sparse keymap library makes a copy of keymap so we
+		 * don't need the original one that was allocated.
+		 */
+		kfree(keymap);
+	} else {
+		err = sparse_keymap_setup(dell_wmi_input_dev,
+					  dell_wmi_legacy_keymap, NULL);
+	}
+	if (err)
+		goto err_free_dev;
+
+	err = input_register_device(dell_wmi_input_dev);
+	if (err)
+		goto err_free_keymap;
+
+	return 0;
+
+ err_free_keymap:
+	sparse_keymap_free(dell_wmi_input_dev);
+ err_free_dev:
+	input_free_device(dell_wmi_input_dev);
+	return err;
+}
+
+static void dell_wmi_input_destroy(void)
+{
+	sparse_keymap_free(dell_wmi_input_dev);
+	input_unregister_device(dell_wmi_input_dev);
+}
+
+static void __init find_hk_type(const struct dmi_header *dm, void *dummy)
+{
+	if (dm->type == 0xb2 && dm->length > 6) {
+		dell_new_hk_type = true;
+		dell_bios_hotkey_table =
+			container_of(dm, struct dell_bios_hotkey_table, header);
+	}
+}
+
+static int __init dell_wmi_init(void)
+{
+	int err;
+	acpi_status status;
+
+	if (!wmi_has_guid(DELL_EVENT_GUID)) {
+		pr_warn("No known WMI GUID found\n");
+		return -ENODEV;
+	}
+
+	dmi_walk(find_hk_type, NULL);
+	acpi_video = acpi_video_backlight_support();
+
+	err = dell_wmi_input_setup();
+	if (err)
+		return err;
+
+	status = wmi_install_notify_handler(DELL_EVENT_GUID,
+					 dell_wmi_notify, NULL);
+	if (ACPI_FAILURE(status)) {
+		dell_wmi_input_destroy();
+		pr_err("Unable to register notify handler - %d\n", status);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+module_init(dell_wmi_init);
+
+static void __exit dell_wmi_exit(void)
+{
+	wmi_remove_notify_handler(DELL_EVENT_GUID);
+	dell_wmi_input_destroy();
+}
+module_exit(dell_wmi_exit);