platform/x86: intel-hid: Move to intel sub-directory

Move Intel HID driver to intel sub-directory to improve readability.

Signed-off-by: Kate Hsuan <hpa@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210820110458.73018-16-andriy.shevchenko@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

1 files changed, 0 insertions, 732 deletions

diff --git a/drivers/platform/x86/intel-hid.c b/drivers/platform/x86/intel-hid.c
deleted file mode 100644
index 2e4e97a626a5..000000000000
--- a/drivers/platform/x86/intel-hid.c
+++ /dev/null
@@ -1,732 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- *  Intel HID event & 5 button array driver
- *
- *  Copyright (C) 2015 Alex Hung <alex.hung@canonical.com>
- *  Copyright (C) 2015 Andrew Lutomirski <luto@kernel.org>
- */
-
-#include <linux/acpi.h>
-#include <linux/dmi.h>
-#include <linux/input.h>
-#include <linux/input/sparse-keymap.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/suspend.h>
-#include "dual_accel_detect.h"
-
-/* When NOT in tablet mode, VGBS returns with the flag 0x40 */
-#define TABLET_MODE_FLAG BIT(6)
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Alex Hung");
-
-static const struct acpi_device_id intel_hid_ids[] = {
-	{"INT33D5", 0},
-	{"INTC1051", 0},
-	{"INTC1054", 0},
-	{"INTC1070", 0},
-	{"", 0},
-};
-MODULE_DEVICE_TABLE(acpi, intel_hid_ids);
-
-/* In theory, these are HID usages. */
-static const struct key_entry intel_hid_keymap[] = {
-	/* 1: LSuper (Page 0x07, usage 0xE3) -- unclear what to do */
-	/* 2: Toggle SW_ROTATE_LOCK -- easy to implement if seen in wild */
-	{ KE_KEY, 3, { KEY_NUMLOCK } },
-	{ KE_KEY, 4, { KEY_HOME } },
-	{ KE_KEY, 5, { KEY_END } },
-	{ KE_KEY, 6, { KEY_PAGEUP } },
-	{ KE_KEY, 7, { KEY_PAGEDOWN } },
-	{ KE_KEY, 8, { KEY_RFKILL } },
-	{ KE_KEY, 9, { KEY_POWER } },
-	{ KE_KEY, 11, { KEY_SLEEP } },
-	/* 13 has two different meanings in the spec -- ignore it. */
-	{ KE_KEY, 14, { KEY_STOPCD } },
-	{ KE_KEY, 15, { KEY_PLAYPAUSE } },
-	{ KE_KEY, 16, { KEY_MUTE } },
-	{ KE_KEY, 17, { KEY_VOLUMEUP } },
-	{ KE_KEY, 18, { KEY_VOLUMEDOWN } },
-	{ KE_KEY, 19, { KEY_BRIGHTNESSUP } },
-	{ KE_KEY, 20, { KEY_BRIGHTNESSDOWN } },
-	/* 27: wake -- needs special handling */
-	{ KE_END },
-};
-
-/* 5 button array notification value. */
-static const struct key_entry intel_array_keymap[] = {
-	{ KE_KEY,    0xC2, { KEY_LEFTMETA } },                /* Press */
-	{ KE_IGNORE, 0xC3, { KEY_LEFTMETA } },                /* Release */
-	{ KE_KEY,    0xC4, { KEY_VOLUMEUP } },                /* Press */
-	{ KE_IGNORE, 0xC5, { KEY_VOLUMEUP } },                /* Release */
-	{ KE_KEY,    0xC6, { KEY_VOLUMEDOWN } },              /* Press */
-	{ KE_IGNORE, 0xC7, { KEY_VOLUMEDOWN } },              /* Release */
-	{ KE_KEY,    0xC8, { KEY_ROTATE_LOCK_TOGGLE } },      /* Press */
-	{ KE_IGNORE, 0xC9, { KEY_ROTATE_LOCK_TOGGLE } },      /* Release */
-	{ KE_KEY,    0xCE, { KEY_POWER } },                   /* Press */
-	{ KE_IGNORE, 0xCF, { KEY_POWER } },                   /* Release */
-	{ KE_END },
-};
-
-static const struct dmi_system_id button_array_table[] = {
-	{
-		.ident = "Wacom MobileStudio Pro 13",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "Wacom Co.,Ltd"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "Wacom MobileStudio Pro 13"),
-		},
-	},
-	{
-		.ident = "Wacom MobileStudio Pro 16",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "Wacom Co.,Ltd"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "Wacom MobileStudio Pro 16"),
-		},
-	},
-	{
-		.ident = "HP Spectre x2 (2015)",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "HP"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "HP Spectre x2 Detachable"),
-		},
-	},
-	{
-		.ident = "Lenovo ThinkPad X1 Tablet Gen 2",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_FAMILY, "ThinkPad X1 Tablet Gen 2"),
-		},
-	},
-	{ }
-};
-
-/*
- * Some convertible use the intel-hid ACPI interface to report SW_TABLET_MODE,
- * these need to be compared via a DMI based authorization list because some
- * models have unreliable VGBS return which could cause incorrect
- * SW_TABLET_MODE report.
- */
-static const struct dmi_system_id dmi_vgbs_allow_list[] = {
-	{
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "HP"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "HP Spectre x360 Convertible 15-df0xxx"),
-		},
-	},
-	{ }
-};
-
-struct intel_hid_priv {
-	struct input_dev *input_dev;
-	struct input_dev *array;
-	struct input_dev *switches;
-	bool wakeup_mode;
-	bool dual_accel;
-};
-
-#define HID_EVENT_FILTER_UUID	"eeec56b3-4442-408f-a792-4edd4d758054"
-
-enum intel_hid_dsm_fn_codes {
-	INTEL_HID_DSM_FN_INVALID,
-	INTEL_HID_DSM_BTNL_FN,
-	INTEL_HID_DSM_HDMM_FN,
-	INTEL_HID_DSM_HDSM_FN,
-	INTEL_HID_DSM_HDEM_FN,
-	INTEL_HID_DSM_BTNS_FN,
-	INTEL_HID_DSM_BTNE_FN,
-	INTEL_HID_DSM_HEBC_V1_FN,
-	INTEL_HID_DSM_VGBS_FN,
-	INTEL_HID_DSM_HEBC_V2_FN,
-	INTEL_HID_DSM_FN_MAX
-};
-
-static const char *intel_hid_dsm_fn_to_method[INTEL_HID_DSM_FN_MAX] = {
-	NULL,
-	"BTNL",
-	"HDMM",
-	"HDSM",
-	"HDEM",
-	"BTNS",
-	"BTNE",
-	"HEBC",
-	"VGBS",
-	"HEBC"
-};
-
-static unsigned long long intel_hid_dsm_fn_mask;
-static guid_t intel_dsm_guid;
-
-static bool intel_hid_execute_method(acpi_handle handle,
-				     enum intel_hid_dsm_fn_codes fn_index,
-				     unsigned long long arg)
-{
-	union acpi_object *obj, argv4, req;
-	acpi_status status;
-	char *method_name;
-
-	if (fn_index <= INTEL_HID_DSM_FN_INVALID ||
-	    fn_index >= INTEL_HID_DSM_FN_MAX)
-		return false;
-
-	method_name = (char *)intel_hid_dsm_fn_to_method[fn_index];
-
-	if (!(intel_hid_dsm_fn_mask & BIT(fn_index)))
-		goto skip_dsm_exec;
-
-	/* All methods expects a package with one integer element */
-	req.type = ACPI_TYPE_INTEGER;
-	req.integer.value = arg;
-
-	argv4.type = ACPI_TYPE_PACKAGE;
-	argv4.package.count = 1;
-	argv4.package.elements = &req;
-
-	obj = acpi_evaluate_dsm(handle, &intel_dsm_guid, 1, fn_index, &argv4);
-	if (obj) {
-		acpi_handle_debug(handle, "Exec DSM Fn code: %d[%s] success\n",
-				  fn_index, method_name);
-		ACPI_FREE(obj);
-		return true;
-	}
-
-skip_dsm_exec:
-	status = acpi_execute_simple_method(handle, method_name, arg);
-	if (ACPI_SUCCESS(status))
-		return true;
-
-	return false;
-}
-
-static bool intel_hid_evaluate_method(acpi_handle handle,
-				      enum intel_hid_dsm_fn_codes fn_index,
-				      unsigned long long *result)
-{
-	union acpi_object *obj;
-	acpi_status status;
-	char *method_name;
-
-	if (fn_index <= INTEL_HID_DSM_FN_INVALID ||
-	    fn_index >= INTEL_HID_DSM_FN_MAX)
-		return false;
-
-	method_name = (char *)intel_hid_dsm_fn_to_method[fn_index];
-
-	if (!(intel_hid_dsm_fn_mask & fn_index))
-		goto skip_dsm_eval;
-
-	obj = acpi_evaluate_dsm_typed(handle, &intel_dsm_guid,
-				      1, fn_index,
-				      NULL,  ACPI_TYPE_INTEGER);
-	if (obj) {
-		*result = obj->integer.value;
-		acpi_handle_debug(handle,
-				  "Eval DSM Fn code: %d[%s] results: 0x%llx\n",
-				  fn_index, method_name, *result);
-		ACPI_FREE(obj);
-		return true;
-	}
-
-skip_dsm_eval:
-	status = acpi_evaluate_integer(handle, method_name, NULL, result);
-	if (ACPI_SUCCESS(status))
-		return true;
-
-	return false;
-}
-
-static void intel_hid_init_dsm(acpi_handle handle)
-{
-	union acpi_object *obj;
-
-	guid_parse(HID_EVENT_FILTER_UUID, &intel_dsm_guid);
-
-	obj = acpi_evaluate_dsm_typed(handle, &intel_dsm_guid, 1, 0, NULL,
-				      ACPI_TYPE_BUFFER);
-	if (obj) {
-		switch (obj->buffer.length) {
-		default:
-		case 2:
-			intel_hid_dsm_fn_mask = *(u16 *)obj->buffer.pointer;
-			break;
-		case 1:
-			intel_hid_dsm_fn_mask = *obj->buffer.pointer;
-			break;
-		case 0:
-			acpi_handle_warn(handle, "intel_hid_dsm_fn_mask length is zero\n");
-			intel_hid_dsm_fn_mask = 0;
-			break;
-		}
-		ACPI_FREE(obj);
-	}
-
-	acpi_handle_debug(handle, "intel_hid_dsm_fn_mask = %llx\n",
-			  intel_hid_dsm_fn_mask);
-}
-
-static int intel_hid_set_enable(struct device *device, bool enable)
-{
-	acpi_handle handle = ACPI_HANDLE(device);
-
-	/* Enable|disable features - power button is always enabled */
-	if (!intel_hid_execute_method(handle, INTEL_HID_DSM_HDSM_FN,
-				      enable)) {
-		dev_warn(device, "failed to %sable hotkeys\n",
-			 enable ? "en" : "dis");
-		return -EIO;
-	}
-
-	return 0;
-}
-
-static void intel_button_array_enable(struct device *device, bool enable)
-{
-	struct intel_hid_priv *priv = dev_get_drvdata(device);
-	acpi_handle handle = ACPI_HANDLE(device);
-	unsigned long long button_cap;
-	acpi_status status;
-
-	if (!priv->array)
-		return;
-
-	/* Query supported platform features */
-	status = acpi_evaluate_integer(handle, "BTNC", NULL, &button_cap);
-	if (ACPI_FAILURE(status)) {
-		dev_warn(device, "failed to get button capability\n");
-		return;
-	}
-
-	/* Enable|disable features - power button is always enabled */
-	if (!intel_hid_execute_method(handle, INTEL_HID_DSM_BTNE_FN,
-				      enable ? button_cap : 1))
-		dev_warn(device, "failed to set button capability\n");
-}
-
-static int intel_hid_pm_prepare(struct device *device)
-{
-	if (device_may_wakeup(device)) {
-		struct intel_hid_priv *priv = dev_get_drvdata(device);
-
-		priv->wakeup_mode = true;
-	}
-	return 0;
-}
-
-static void intel_hid_pm_complete(struct device *device)
-{
-	struct intel_hid_priv *priv = dev_get_drvdata(device);
-
-	priv->wakeup_mode = false;
-}
-
-static int intel_hid_pl_suspend_handler(struct device *device)
-{
-	intel_button_array_enable(device, false);
-
-	if (!pm_suspend_no_platform())
-		intel_hid_set_enable(device, false);
-
-	return 0;
-}
-
-static int intel_hid_pl_resume_handler(struct device *device)
-{
-	intel_hid_pm_complete(device);
-
-	if (!pm_suspend_no_platform())
-		intel_hid_set_enable(device, true);
-
-	intel_button_array_enable(device, true);
-	return 0;
-}
-
-static const struct dev_pm_ops intel_hid_pl_pm_ops = {
-	.prepare = intel_hid_pm_prepare,
-	.complete = intel_hid_pm_complete,
-	.freeze  = intel_hid_pl_suspend_handler,
-	.thaw  = intel_hid_pl_resume_handler,
-	.restore  = intel_hid_pl_resume_handler,
-	.suspend  = intel_hid_pl_suspend_handler,
-	.resume  = intel_hid_pl_resume_handler,
-};
-
-static int intel_hid_input_setup(struct platform_device *device)
-{
-	struct intel_hid_priv *priv = dev_get_drvdata(&device->dev);
-	int ret;
-
-	priv->input_dev = devm_input_allocate_device(&device->dev);
-	if (!priv->input_dev)
-		return -ENOMEM;
-
-	ret = sparse_keymap_setup(priv->input_dev, intel_hid_keymap, NULL);
-	if (ret)
-		return ret;
-
-	priv->input_dev->name = "Intel HID events";
-	priv->input_dev->id.bustype = BUS_HOST;
-
-	return input_register_device(priv->input_dev);
-}
-
-static int intel_button_array_input_setup(struct platform_device *device)
-{
-	struct intel_hid_priv *priv = dev_get_drvdata(&device->dev);
-	int ret;
-
-	/* Setup input device for 5 button array */
-	priv->array = devm_input_allocate_device(&device->dev);
-	if (!priv->array)
-		return -ENOMEM;
-
-	ret = sparse_keymap_setup(priv->array, intel_array_keymap, NULL);
-	if (ret)
-		return ret;
-
-	priv->array->name = "Intel HID 5 button array";
-	priv->array->id.bustype = BUS_HOST;
-
-	return input_register_device(priv->array);
-}
-
-static int intel_hid_switches_setup(struct platform_device *device)
-{
-	struct intel_hid_priv *priv = dev_get_drvdata(&device->dev);
-
-	/* Setup input device for switches */
-	priv->switches = devm_input_allocate_device(&device->dev);
-	if (!priv->switches)
-		return -ENOMEM;
-
-	__set_bit(EV_SW, priv->switches->evbit);
-	__set_bit(SW_TABLET_MODE, priv->switches->swbit);
-
-	priv->switches->name = "Intel HID switches";
-	priv->switches->id.bustype = BUS_HOST;
-	return input_register_device(priv->switches);
-}
-
-static void report_tablet_mode_state(struct platform_device *device)
-{
-	struct intel_hid_priv *priv = dev_get_drvdata(&device->dev);
-	acpi_handle handle = ACPI_HANDLE(&device->dev);
-	unsigned long long vgbs;
-	int m;
-
-	if (!intel_hid_evaluate_method(handle, INTEL_HID_DSM_VGBS_FN, &vgbs))
-		return;
-
-	m = !(vgbs & TABLET_MODE_FLAG);
-	input_report_switch(priv->switches, SW_TABLET_MODE, m);
-	input_sync(priv->switches);
-}
-
-static bool report_tablet_mode_event(struct input_dev *input_dev, u32 event)
-{
-	if (!input_dev)
-		return false;
-
-	switch (event) {
-	case 0xcc:
-		input_report_switch(input_dev, SW_TABLET_MODE, 1);
-		input_sync(input_dev);
-		return true;
-	case 0xcd:
-		input_report_switch(input_dev, SW_TABLET_MODE, 0);
-		input_sync(input_dev);
-		return true;
-	default:
-		return false;
-	}
-}
-
-static void notify_handler(acpi_handle handle, u32 event, void *context)
-{
-	struct platform_device *device = context;
-	struct intel_hid_priv *priv = dev_get_drvdata(&device->dev);
-	unsigned long long ev_index;
-	int err;
-
-	/*
-	 * Some convertible have unreliable VGBS return which could cause incorrect
-	 * SW_TABLET_MODE report, in these cases we enable support when receiving
-	 * the first event instead of during driver setup.
-	 *
-	 * See dual_accel_detect.h for more info on the dual_accel check.
-	 */
-	if (!priv->switches && !priv->dual_accel && (event == 0xcc || event == 0xcd)) {
-		dev_info(&device->dev, "switch event received, enable switches supports\n");
-		err = intel_hid_switches_setup(device);
-		if (err)
-			pr_err("Failed to setup Intel HID switches\n");
-	}
-
-	if (priv->wakeup_mode) {
-		/*
-		 * Needed for wakeup from suspend-to-idle to work on some
-		 * platforms that don't expose the 5-button array, but still
-		 * send notifies with the power button event code to this
-		 * device object on power button actions while suspended.
-		 */
-		if (event == 0xce)
-			goto wakeup;
-
-		/*
-		 * Some devices send (duplicate) tablet-mode events when moved
-		 * around even though the mode has not changed; and they do this
-		 * even when suspended.
-		 * Update the switch state in case it changed and then return
-		 * without waking up to avoid spurious wakeups.
-		 */
-		if (event == 0xcc || event == 0xcd) {
-			report_tablet_mode_event(priv->switches, event);
-			return;
-		}
-
-		/* Wake up on 5-button array events only. */
-		if (event == 0xc0 || !priv->array)
-			return;
-
-		if (!sparse_keymap_entry_from_scancode(priv->array, event)) {
-			dev_info(&device->dev, "unknown event 0x%x\n", event);
-			return;
-		}
-
-wakeup:
-		pm_wakeup_hard_event(&device->dev);
-
-		return;
-	}
-
-	/*
-	 * Needed for suspend to work on some platforms that don't expose
-	 * the 5-button array, but still send notifies with power button
-	 * event code to this device object on power button actions.
-	 *
-	 * Report the power button press and release.
-	 */
-	if (!priv->array) {
-		if (event == 0xce) {
-			input_report_key(priv->input_dev, KEY_POWER, 1);
-			input_sync(priv->input_dev);
-			return;
-		}
-
-		if (event == 0xcf) {
-			input_report_key(priv->input_dev, KEY_POWER, 0);
-			input_sync(priv->input_dev);
-			return;
-		}
-	}
-
-	if (report_tablet_mode_event(priv->switches, event))
-		return;
-
-	/* 0xC0 is for HID events, other values are for 5 button array */
-	if (event != 0xc0) {
-		if (!priv->array ||
-		    !sparse_keymap_report_event(priv->array, event, 1, true))
-			dev_dbg(&device->dev, "unknown event 0x%x\n", event);
-		return;
-	}
-
-	if (!intel_hid_evaluate_method(handle, INTEL_HID_DSM_HDEM_FN,
-				       &ev_index)) {
-		dev_warn(&device->dev, "failed to get event index\n");
-		return;
-	}
-
-	if (!sparse_keymap_report_event(priv->input_dev, ev_index, 1, true))
-		dev_dbg(&device->dev, "unknown event index 0x%llx\n",
-			 ev_index);
-}
-
-static bool button_array_present(struct platform_device *device)
-{
-	acpi_handle handle = ACPI_HANDLE(&device->dev);
-	unsigned long long event_cap;
-
-	if (intel_hid_evaluate_method(handle, INTEL_HID_DSM_HEBC_V2_FN,
-				      &event_cap)) {
-		/* Check presence of 5 button array or v2 power button */
-		if (event_cap & 0x60000)
-			return true;
-	}
-
-	if (intel_hid_evaluate_method(handle, INTEL_HID_DSM_HEBC_V1_FN,
-				      &event_cap)) {
-		if (event_cap & 0x20000)
-			return true;
-	}
-
-	if (dmi_check_system(button_array_table))
-		return true;
-
-	return false;
-}
-
-static int intel_hid_probe(struct platform_device *device)
-{
-	acpi_handle handle = ACPI_HANDLE(&device->dev);
-	unsigned long long mode;
-	struct intel_hid_priv *priv;
-	acpi_status status;
-	int err;
-
-	intel_hid_init_dsm(handle);
-
-	if (!intel_hid_evaluate_method(handle, INTEL_HID_DSM_HDMM_FN, &mode)) {
-		dev_warn(&device->dev, "failed to read mode\n");
-		return -ENODEV;
-	}
-
-	if (mode != 0) {
-		/*
-		 * This driver only implements "simple" mode.  There appear
-		 * to be no other modes, but we should be paranoid and check
-		 * for compatibility.
-		 */
-		dev_info(&device->dev, "platform is not in simple mode\n");
-		return -ENODEV;
-	}
-
-	priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL);
-	if (!priv)
-		return -ENOMEM;
-	dev_set_drvdata(&device->dev, priv);
-
-	priv->dual_accel = dual_accel_detect();
-
-	err = intel_hid_input_setup(device);
-	if (err) {
-		pr_err("Failed to setup Intel HID hotkeys\n");
-		return err;
-	}
-
-	/* Setup 5 button array */
-	if (button_array_present(device)) {
-		dev_info(&device->dev, "platform supports 5 button array\n");
-		err = intel_button_array_input_setup(device);
-		if (err)
-			pr_err("Failed to setup Intel 5 button array hotkeys\n");
-	}
-
-	/* Setup switches for devices that we know VGBS return correctly */
-	if (dmi_check_system(dmi_vgbs_allow_list)) {
-		dev_info(&device->dev, "platform supports switches\n");
-		err = intel_hid_switches_setup(device);
-		if (err)
-			pr_err("Failed to setup Intel HID switches\n");
-		else
-			report_tablet_mode_state(device);
-	}
-
-	status = acpi_install_notify_handler(handle,
-					     ACPI_DEVICE_NOTIFY,
-					     notify_handler,
-					     device);
-	if (ACPI_FAILURE(status))
-		return -EBUSY;
-
-	err = intel_hid_set_enable(&device->dev, true);
-	if (err)
-		goto err_remove_notify;
-
-	if (priv->array) {
-		unsigned long long dummy;
-
-		intel_button_array_enable(&device->dev, true);
-
-		/* Call button load method to enable HID power button */
-		if (!intel_hid_evaluate_method(handle, INTEL_HID_DSM_BTNL_FN,
-					       &dummy)) {
-			dev_warn(&device->dev,
-				 "failed to enable HID power button\n");
-		}
-	}
-
-	device_init_wakeup(&device->dev, true);
-	/*
-	 * In order for system wakeup to work, the EC GPE has to be marked as
-	 * a wakeup one, so do that here (this setting will persist, but it has
-	 * no effect until the wakeup mask is set for the EC GPE).
-	 */
-	acpi_ec_mark_gpe_for_wake();
-	return 0;
-
-err_remove_notify:
-	acpi_remove_notify_handler(handle, ACPI_DEVICE_NOTIFY, notify_handler);
-
-	return err;
-}
-
-static int intel_hid_remove(struct platform_device *device)
-{
-	acpi_handle handle = ACPI_HANDLE(&device->dev);
-
-	device_init_wakeup(&device->dev, false);
-	acpi_remove_notify_handler(handle, ACPI_DEVICE_NOTIFY, notify_handler);
-	intel_hid_set_enable(&device->dev, false);
-	intel_button_array_enable(&device->dev, false);
-
-	/*
-	 * Even if we failed to shut off the event stream, we can still
-	 * safely detach from the device.
-	 */
-	return 0;
-}
-
-static struct platform_driver intel_hid_pl_driver = {
-	.driver = {
-		.name = "intel-hid",
-		.acpi_match_table = intel_hid_ids,
-		.pm = &intel_hid_pl_pm_ops,
-	},
-	.probe = intel_hid_probe,
-	.remove = intel_hid_remove,
-};
-
-/*
- * Unfortunately, some laptops provide a _HID="INT33D5" device with
- * _CID="PNP0C02".  This causes the pnpacpi scan driver to claim the
- * ACPI node, so no platform device will be created.  The pnpacpi
- * driver rejects this device in subsequent processing, so no physical
- * node is created at all.
- *
- * As a workaround until the ACPI core figures out how to handle
- * this corner case, manually ask the ACPI platform device code to
- * claim the ACPI node.
- */
-static acpi_status __init
-check_acpi_dev(acpi_handle handle, u32 lvl, void *context, void **rv)
-{
-	const struct acpi_device_id *ids = context;
-	struct acpi_device *dev;
-
-	if (acpi_bus_get_device(handle, &dev) != 0)
-		return AE_OK;
-
-	if (acpi_match_device_ids(dev, ids) == 0)
-		if (!IS_ERR_OR_NULL(acpi_create_platform_device(dev, NULL)))
-			dev_info(&dev->dev,
-				 "intel-hid: created platform device\n");
-
-	return AE_OK;
-}
-
-static int __init intel_hid_init(void)
-{
-	acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
-			    ACPI_UINT32_MAX, check_acpi_dev, NULL,
-			    (void *)intel_hid_ids, NULL);
-
-	return platform_driver_register(&intel_hid_pl_driver);
-}
-module_init(intel_hid_init);
-
-static void __exit intel_hid_exit(void)
-{
-	platform_driver_unregister(&intel_hid_pl_driver);
-}
-module_exit(intel_hid_exit);