1 files changed, 170 insertions, 361 deletions

diff --git a/drivers/platform/x86/eeepc-wmi.c b/drivers/platform/x86/eeepc-wmi.c
index 462ceab93f8..6112933f627 100644
--- a/drivers/platform/x86/eeepc-wmi.c
+++ b/drivers/platform/x86/eeepc-wmi.c
@@ -2,6 +2,7 @@
  * Eee PC WMI hotkey driver
  *
  * Copyright(C) 2010 Intel Corporation.
+ * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
  *
  * Portions based on wistron_btns.c:
  * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
@@ -28,441 +29,249 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
-#include <linux/types.h>
-#include <linux/slab.h>
 #include <linux/input.h>
 #include <linux/input/sparse-keymap.h>
+#include <linux/dmi.h>
 #include <linux/fb.h>
-#include <linux/backlight.h>
-#include <linux/platform_device.h>
-#include <acpi/acpi_bus.h>
-#include <acpi/acpi_drivers.h>
+#include <linux/acpi.h>
+
+#include "asus-wmi.h"
 
 #define	EEEPC_WMI_FILE	"eeepc-wmi"
 
-MODULE_AUTHOR("Yong Wang <yong.y.wang@intel.com>");
+MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>");
 MODULE_DESCRIPTION("Eee PC WMI Hotkey Driver");
 MODULE_LICENSE("GPL");
 
+#define EEEPC_ACPI_HID		"ASUS010" /* old _HID used in eeepc-laptop */
+
 #define EEEPC_WMI_EVENT_GUID	"ABBC0F72-8EA1-11D1-00A0-C90629100000"
-#define EEEPC_WMI_MGMT_GUID	"97845ED0-4E6D-11DE-8A39-0800200C9A66"
 
 MODULE_ALIAS("wmi:"EEEPC_WMI_EVENT_GUID);
-MODULE_ALIAS("wmi:"EEEPC_WMI_MGMT_GUID);
 
-#define NOTIFY_BRNUP_MIN	0x11
-#define NOTIFY_BRNUP_MAX	0x1f
-#define NOTIFY_BRNDOWN_MIN	0x20
-#define NOTIFY_BRNDOWN_MAX	0x2e
+static bool hotplug_wireless;
 
-#define EEEPC_WMI_METHODID_DEVS	0x53564544
-#define EEEPC_WMI_METHODID_DSTS	0x53544344
-#define EEEPC_WMI_METHODID_CFVS	0x53564643
+module_param(hotplug_wireless, bool, 0444);
+MODULE_PARM_DESC(hotplug_wireless,
+		 "Enable hotplug for wireless device. "
+		 "If your laptop needs that, please report to "
+		 "acpi4asus-user@lists.sourceforge.net.");
 
-#define EEEPC_WMI_DEVID_BACKLIGHT	0x00050012
+/* 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[] = {
+	{ KE_KEY, ASUS_WMI_BRN_DOWN, { KEY_BRIGHTNESSDOWN } },
+	{ KE_KEY, ASUS_WMI_BRN_UP, { KEY_BRIGHTNESSUP } },
 	/* Sleep already handled via generic ACPI code */
-	{ KE_KEY, 0x5d, { KEY_WLAN } },
-	{ KE_KEY, 0x32, { KEY_MUTE } },
-	{ KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
 	{ KE_KEY, 0x30, { KEY_VOLUMEUP } },
-	{ KE_IGNORE, NOTIFY_BRNDOWN_MIN, { KEY_BRIGHTNESSDOWN } },
-	{ KE_IGNORE, NOTIFY_BRNUP_MIN, { KEY_BRIGHTNESSUP } },
+	{ KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
+	{ KE_KEY, 0x32, { KEY_MUTE } },
+	{ KE_KEY, 0x5c, { KEY_F15 } }, /* Power Gear key */
+	{ KE_KEY, 0x5d, { KEY_WLAN } },
+	{ KE_KEY, 0x6b, { KEY_TOUCHPAD_TOGGLE } }, /* Toggle Touchpad */
+	{ KE_KEY, 0x82, { KEY_CAMERA } },
+	{ KE_KEY, 0x83, { KEY_CAMERA_ZOOMIN } },
+	{ KE_KEY, 0x88, { KEY_WLAN } },
+	{ KE_KEY, 0xbd, { KEY_CAMERA } },
 	{ KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } },
-	{ KE_KEY, 0x6b, { KEY_F13 } }, /* Disable Touchpad */
-	{ KE_KEY, 0xe1, { KEY_F14 } },
-	{ KE_KEY, 0xe9, { KEY_DISPLAY_OFF } },
-	{ KE_KEY, 0xe0, { KEY_PROG1 } },
-	{ KE_KEY, 0x5c, { KEY_F15 } },
+	{ 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_DISPLAYTOGGLE } },
+	{ KE_KEY, 0xeb, { KEY_CAMERA_ZOOMOUT } },
+	{ KE_KEY, 0xec, { KEY_CAMERA_UP } },
+	{ KE_KEY, 0xed, { KEY_CAMERA_DOWN } },
+	{ KE_KEY, 0xee, { KEY_CAMERA_LEFT } },
+	{ KE_KEY, 0xef, { KEY_CAMERA_RIGHT } },
+	{ KE_KEY, 0xf3, { KEY_MENU } },
+	{ KE_KEY, 0xf5, { KEY_HOMEPAGE } },
+	{ KE_KEY, 0xf6, { KEY_ESC } },
 	{ KE_END, 0},
 };
 
-struct bios_args {
-	u32	dev_id;
-	u32	ctrl_param;
+static struct quirk_entry quirk_asus_unknown = {
 };
 
-struct eeepc_wmi {
-	struct input_dev *inputdev;
-	struct backlight_device *backlight_device;
+static struct quirk_entry quirk_asus_1000h = {
+	.hotplug_wireless = true,
 };
 
-static struct platform_device *platform_device;
-
-static int eeepc_wmi_input_init(struct eeepc_wmi *eeepc)
-{
-	int err;
-
-	eeepc->inputdev = input_allocate_device();
-	if (!eeepc->inputdev)
-		return -ENOMEM;
-
-	eeepc->inputdev->name = "Eee PC WMI hotkeys";
-	eeepc->inputdev->phys = EEEPC_WMI_FILE "/input0";
-	eeepc->inputdev->id.bustype = BUS_HOST;
-	eeepc->inputdev->dev.parent = &platform_device->dev;
-
-	err = sparse_keymap_setup(eeepc->inputdev, eeepc_wmi_keymap, NULL);
-	if (err)
-		goto err_free_dev;
+static struct quirk_entry quirk_asus_et2012_type1 = {
+	.store_backlight_power = true,
+};
 
-	err = input_register_device(eeepc->inputdev);
-	if (err)
-		goto err_free_keymap;
+static struct quirk_entry quirk_asus_et2012_type3 = {
+	.scalar_panel_brightness = true,
+	.store_backlight_power = true,
+};
 
-	return 0;
+static struct quirk_entry quirk_asus_x101ch = {
+	/* We need this when ACPI function doesn't do this well */
+	.wmi_backlight_power = true,
+};
 
-err_free_keymap:
-	sparse_keymap_free(eeepc->inputdev);
-err_free_dev:
-	input_free_device(eeepc->inputdev);
-	return err;
-}
+static struct quirk_entry *quirks;
 
-static void eeepc_wmi_input_exit(struct eeepc_wmi *eeepc)
+static void et2012_quirks(void)
 {
-	if (eeepc->inputdev) {
-		sparse_keymap_free(eeepc->inputdev);
-		input_unregister_device(eeepc->inputdev);
+	const struct dmi_device *dev = NULL;
+	char oemstring[30];
+
+	while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
+		if (sscanf(dev->name, "AEMS%24c", oemstring) == 1) {
+			if (oemstring[18] == '1')
+				quirks = &quirk_asus_et2012_type1;
+			else if (oemstring[18] == '3')
+				quirks = &quirk_asus_et2012_type3;
+			break;
+		}
 	}
-
-	eeepc->inputdev = NULL;
-}
-
-static acpi_status eeepc_wmi_get_devstate(u32 dev_id, u32 *ctrl_param)
-{
-	struct acpi_buffer input = { (acpi_size)sizeof(u32), &dev_id };
-	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
-	union acpi_object *obj;
-	acpi_status status;
-	u32 tmp;
-
-	status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID,
-			1, EEEPC_WMI_METHODID_DSTS, &input, &output);
-
-	if (ACPI_FAILURE(status))
-		return status;
-
-	obj = (union acpi_object *)output.pointer;
-	if (obj && obj->type == ACPI_TYPE_INTEGER)
-		tmp = (u32)obj->integer.value;
-	else
-		tmp = 0;
-
-	if (ctrl_param)
-		*ctrl_param = tmp;
-
-	kfree(obj);
-
-	return status;
-
-}
-
-static acpi_status eeepc_wmi_set_devstate(u32 dev_id, u32 ctrl_param)
-{
-	struct bios_args args = {
-		.dev_id = dev_id,
-		.ctrl_param = ctrl_param,
-	};
-	struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
-	acpi_status status;
-
-	status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID,
-			1, EEEPC_WMI_METHODID_DEVS, &input, NULL);
-
-	return status;
-}
-
-static int read_brightness(struct backlight_device *bd)
-{
-	static u32 ctrl_param;
-	acpi_status status;
-
-	status = eeepc_wmi_get_devstate(EEEPC_WMI_DEVID_BACKLIGHT, &ctrl_param);
-
-	if (ACPI_FAILURE(status))
-		return -1;
-	else
-		return ctrl_param & 0xFF;
 }
 
-static int update_bl_status(struct backlight_device *bd)
+static int dmi_matched(const struct dmi_system_id *dmi)
 {
+	char *model;
 
-	static u32 ctrl_param;
-	acpi_status status;
-
-	ctrl_param = bd->props.brightness;
+	quirks = dmi->driver_data;
 
-	status = eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_BACKLIGHT, ctrl_param);
+	model = (char *)dmi->matches[1].substr;
+	if (unlikely(strncmp(model, "ET2012", 6) == 0))
+		et2012_quirks();
 
-	if (ACPI_FAILURE(status))
-		return -1;
-	else
-		return 0;
+	return 1;
 }
 
-static const struct backlight_ops eeepc_wmi_bl_ops = {
-	.get_brightness = read_brightness,
-	.update_status = update_bl_status,
+static struct dmi_system_id asus_quirks[] = {
+	{
+		.callback = dmi_matched,
+		.ident = "ASUSTeK Computer INC. 1000H",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "1000H"),
+		},
+		.driver_data = &quirk_asus_1000h,
+	},
+	{
+		.callback = dmi_matched,
+		.ident = "ASUSTeK Computer INC. ET2012E/I",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "ET2012"),
+		},
+		.driver_data = &quirk_asus_unknown,
+	},
+	{
+		.callback = dmi_matched,
+		.ident = "ASUSTeK Computer INC. X101CH",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "X101CH"),
+		},
+		.driver_data = &quirk_asus_x101ch,
+	},
+	{
+		.callback = dmi_matched,
+		.ident = "ASUSTeK Computer INC. 1015CX",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "1015CX"),
+		},
+		.driver_data = &quirk_asus_x101ch,
+	},
+	{},
 };
 
-static int eeepc_wmi_backlight_notify(struct eeepc_wmi *eeepc, int code)
-{
-	struct backlight_device *bd = eeepc->backlight_device;
-	int old = bd->props.brightness;
-	int new = old;
-
-	if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
-		new = code - NOTIFY_BRNUP_MIN + 1;
-	else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
-		new = code - NOTIFY_BRNDOWN_MIN;
-
-	bd->props.brightness = new;
-	backlight_update_status(bd);
-	backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
-
-	return old;
-}
-
-static int eeepc_wmi_backlight_init(struct eeepc_wmi *eeepc)
+static void eeepc_wmi_key_filter(struct asus_wmi_driver *asus_wmi, int *code,
+				 unsigned int *value, bool *autorelease)
 {
-	struct backlight_device *bd;
-	struct backlight_properties props;
-
-	memset(&props, 0, sizeof(struct backlight_properties));
-	props.max_brightness = 15;
-	bd = backlight_device_register(EEEPC_WMI_FILE,
-				       &platform_device->dev, eeepc,
-				       &eeepc_wmi_bl_ops, &props);
-	if (IS_ERR(bd)) {
-		pr_err("Could not register backlight device\n");
-		return PTR_ERR(bd);
+	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;
 	}
-
-	eeepc->backlight_device = bd;
-
-	bd->props.brightness = read_brightness(bd);
-	bd->props.power = FB_BLANK_UNBLANK;
-	backlight_update_status(bd);
-
-	return 0;
-}
-
-static void eeepc_wmi_backlight_exit(struct eeepc_wmi *eeepc)
-{
-	if (eeepc->backlight_device)
-		backlight_device_unregister(eeepc->backlight_device);
-
-	eeepc->backlight_device = NULL;
 }
 
-static void eeepc_wmi_notify(u32 value, void *context)
+static acpi_status eeepc_wmi_parse_device(acpi_handle handle, u32 level,
+						 void *context, void **retval)
 {
-	struct eeepc_wmi *eeepc = context;
-	struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
-	union acpi_object *obj;
-	acpi_status status;
-	int code;
-	int orig_code;
-
-	status = wmi_get_event_data(value, &response);
-	if (status != AE_OK) {
-		pr_err("bad event status 0x%x\n", status);
-		return;
-	}
-
-	obj = (union acpi_object *)response.pointer;
-
-	if (obj && obj->type == ACPI_TYPE_INTEGER) {
-		code = obj->integer.value;
-		orig_code = code;
-
-		if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
-			code = NOTIFY_BRNUP_MIN;
-		else if (code >= NOTIFY_BRNDOWN_MIN &&
-			 code <= NOTIFY_BRNDOWN_MAX)
-			code = NOTIFY_BRNDOWN_MIN;
-
-		if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) {
-			if (!acpi_video_backlight_support())
-				eeepc_wmi_backlight_notify(eeepc, orig_code);
-		}
-
-		if (!sparse_keymap_report_event(eeepc->inputdev,
-						code, 1, true))
-			pr_info("Unknown key %x pressed\n", code);
-	}
-
-	kfree(obj);
+	pr_warn("Found legacy ATKD device (%s)\n", EEEPC_ACPI_HID);
+	*(bool *)context = true;
+	return AE_CTRL_TERMINATE;
 }
 
-static int store_cpufv(struct device *dev, struct device_attribute *attr,
-		       const char *buf, size_t count)
+static int eeepc_wmi_check_atkd(void)
 {
-	int value;
-	struct acpi_buffer input = { (acpi_size)sizeof(value), &value };
 	acpi_status status;
+	bool found = false;
 
-	if (!count || sscanf(buf, "%i", &value) != 1)
-		return -EINVAL;
-	if (value < 0 || value > 2)
-		return -EINVAL;
-
-	status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID,
-				     1, EEEPC_WMI_METHODID_CFVS, &input, NULL);
-
-	if (ACPI_FAILURE(status))
-		return -EIO;
-	else
-		return count;
-}
-
-static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
-
-static void eeepc_wmi_sysfs_exit(struct platform_device *device)
-{
-	device_remove_file(&device->dev, &dev_attr_cpufv);
-}
-
-static int eeepc_wmi_sysfs_init(struct platform_device *device)
-{
-	int retval = -ENOMEM;
+	status = acpi_get_devices(EEEPC_ACPI_HID, eeepc_wmi_parse_device,
+				  &found, NULL);
 
-	retval = device_create_file(&device->dev, &dev_attr_cpufv);
-	if (retval)
-		goto error_sysfs;
-
-	return 0;
-
-error_sysfs:
-	eeepc_wmi_sysfs_exit(platform_device);
-	return retval;
+	if (ACPI_FAILURE(status) || !found)
+		return 0;
+	return -1;
 }
 
-static int __devinit eeepc_wmi_platform_probe(struct platform_device *device)
+static int eeepc_wmi_probe(struct platform_device *pdev)
 {
-	struct eeepc_wmi *eeepc;
-	int err;
-	acpi_status status;
-
-	eeepc = platform_get_drvdata(device);
-
-	err = eeepc_wmi_input_init(eeepc);
-	if (err)
-		goto error_input;
-
-	if (!acpi_video_backlight_support()) {
-		err = eeepc_wmi_backlight_init(eeepc);
-		if (err)
-			goto error_backlight;
-	} else
-		pr_info("Backlight controlled by ACPI video driver\n");
-
-	status = wmi_install_notify_handler(EEEPC_WMI_EVENT_GUID,
-					eeepc_wmi_notify, eeepc);
-	if (ACPI_FAILURE(status)) {
-		pr_err("Unable to register notify handler - %d\n",
-			status);
-		err = -ENODEV;
-		goto error_wmi;
+	if (eeepc_wmi_check_atkd()) {
+		pr_warn("WMI device present, but legacy ATKD device is also "
+			"present and enabled\n");
+		pr_warn("You probably booted with acpi_osi=\"Linux\" or "
+			"acpi_osi=\"!Windows 2009\"\n");
+		pr_warn("Can't load eeepc-wmi, use default acpi_osi "
+			"(preferred) or eeepc-laptop\n");
+		return -EBUSY;
 	}
-
 	return 0;
-
-error_wmi:
-	eeepc_wmi_backlight_exit(eeepc);
-error_backlight:
-	eeepc_wmi_input_exit(eeepc);
-error_input:
-	return err;
 }
 
-static int __devexit eeepc_wmi_platform_remove(struct platform_device *device)
+static void eeepc_wmi_quirks(struct asus_wmi_driver *driver)
 {
-	struct eeepc_wmi *eeepc;
+	quirks = &quirk_asus_unknown;
+	quirks->hotplug_wireless = hotplug_wireless;
 
-	eeepc = platform_get_drvdata(device);
-	wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID);
-	eeepc_wmi_backlight_exit(eeepc);
-	eeepc_wmi_input_exit(eeepc);
+	dmi_check_system(asus_quirks);
 
-	return 0;
+	driver->quirks = quirks;
+	driver->quirks->wapf = -1;
+	driver->panel_power = FB_BLANK_UNBLANK;
 }
 
-static struct platform_driver platform_driver = {
-	.driver = {
-		.name = EEEPC_WMI_FILE,
-		.owner = THIS_MODULE,
-	},
-	.probe = eeepc_wmi_platform_probe,
-	.remove = __devexit_p(eeepc_wmi_platform_remove),
+static struct asus_wmi_driver asus_wmi_driver = {
+	.name = EEEPC_WMI_FILE,
+	.owner = THIS_MODULE,
+	.event_guid = EEEPC_WMI_EVENT_GUID,
+	.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,
+	.detect_quirks = eeepc_wmi_quirks,
 };
 
+
 static int __init eeepc_wmi_init(void)
 {
-	struct eeepc_wmi *eeepc;
-	int err;
-
-	if (!wmi_has_guid(EEEPC_WMI_EVENT_GUID) ||
-	    !wmi_has_guid(EEEPC_WMI_MGMT_GUID)) {
-		pr_warning("No known WMI GUID found\n");
-		return -ENODEV;
-	}
-
-	eeepc = kzalloc(sizeof(struct eeepc_wmi), GFP_KERNEL);
-	if (!eeepc)
-		return -ENOMEM;
-
-	platform_device = platform_device_alloc(EEEPC_WMI_FILE, -1);
-	if (!platform_device) {
-		pr_warning("Unable to allocate platform device\n");
-		err = -ENOMEM;
-		goto fail_platform;
-	}
-
-	err = platform_device_add(platform_device);
-	if (err) {
-		pr_warning("Unable to add platform device\n");
-		goto put_dev;
-	}
-
-	platform_set_drvdata(platform_device, eeepc);
-
-	err = platform_driver_register(&platform_driver);
-	if (err) {
-		pr_warning("Unable to register platform driver\n");
-		goto del_dev;
-	}
-
-	err = eeepc_wmi_sysfs_init(platform_device);
-	if (err)
-		goto del_sysfs;
-
-	return 0;
-
-del_sysfs:
-	eeepc_wmi_sysfs_exit(platform_device);
-del_dev:
-	platform_device_del(platform_device);
-put_dev:
-	platform_device_put(platform_device);
-fail_platform:
-	kfree(eeepc);
-
-	return err;
+	return asus_wmi_register_driver(&asus_wmi_driver);
 }
 
 static void __exit eeepc_wmi_exit(void)
 {
-	struct eeepc_wmi *eeepc;
-
-	eeepc_wmi_sysfs_exit(platform_device);
-	eeepc = platform_get_drvdata(platform_device);
-	platform_driver_unregister(&platform_driver);
-	platform_device_unregister(platform_device);
-	kfree(eeepc);
+	asus_wmi_unregister_driver(&asus_wmi_driver);
 }
 
 module_init(eeepc_wmi_init);