[PATCH v16 4/6] platform/x86: redmi-wmi: Drop redmi-wmi driver

[Mingyou Chen <qby140326@gmail.com>]

The redmi-wmi driver is no longer needed because its functionality
has been superseded by the new generic bitland platform driver.
All supported Redmi laptop models are now handled properly via the
updated WMI interfaces in bitland-mifs-wmi.

Remove the obsolete code, Kconfig entries, and Makefile references
to clean up the platform directory.

Signed-off-by: Mingyou Chen <qby140326@gmail.com>
---
 MAINTAINERS                      |   6 --
 drivers/platform/x86/Kconfig     |  13 +--
 drivers/platform/x86/Makefile    |   1 -
 drivers/platform/x86/redmi-wmi.c | 154 -------------------------------
 4 files changed, 5 insertions(+), 169 deletions(-)
 delete mode 100644 drivers/platform/x86/redmi-wmi.c

diff --git a/MAINTAINERS b/MAINTAINERS
index b3307cbb60c6..bd31e734669e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -23692,12 +23692,6 @@ S:	Maintained
 T:	git https://github.com/pkshih/rtw.git
 F:	drivers/net/wireless/realtek/rtw89/
 
-REDMIBOOK WMI DRIVERS
-M:	Gladyshev Ilya <foxido@foxido.dev>
-L:	platform-driver-x86@vger.kernel.org
-S:	Maintained
-F:	drivers/platform/x86/redmi-wmi.c
-
 BITLAND LAPTOP DRIVER
 M:	Mingyou Chen <qby140326@gmail.com>
 M:	Ilya Gladyshev <ilya.gladyshev@linux.dev>
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index b2c6cc923694..c32f8cb6116d 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -79,16 +79,12 @@ config XIAOMI_WMI
 	  be called xiaomi-wmi.
 
 config REDMI_WMI
-	tristate "Redmibook WMI key driver"
+	tristate "Redmibook WMI key driver (DEPRECATED)"
 	depends on ACPI_WMI
+	depends on HWMON
 	depends on INPUT
-	select INPUT_SPARSEKMAP
-	help
-	  Say Y here if you want support for WMI-based hotkey events on
-	  Xiaomi Redmibook devices.
-
-	  To compile this driver as a module, choose M here: the module will
-	  be called redmi-wmi.
+	depends on LEDS_CLASS
+	depends on POWER_SUPPLY
 
 config GIGABYTE_WMI
 	tristate "Gigabyte WMI temperature driver"
@@ -108,6 +104,7 @@ config BITLAND_MIFS_WMI
 	depends on INPUT
 	depends on LEDS_CLASS
 	depends on POWER_SUPPLY
+	default REDMI_WMI if REDMI_WMI
 	select ACPI_PLATFORM_PROFILE
 	select INPUT_SPARSEKMAP
 	help
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index 88f45e03ee19..77df59b5f40a 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -9,7 +9,6 @@ obj-$(CONFIG_HUAWEI_WMI)		+= huawei-wmi.o
 obj-$(CONFIG_MXM_WMI)			+= mxm-wmi.o
 obj-$(CONFIG_NVIDIA_WMI_EC_BACKLIGHT)	+= nvidia-wmi-ec-backlight.o
 obj-$(CONFIG_XIAOMI_WMI)		+= xiaomi-wmi.o
-obj-$(CONFIG_REDMI_WMI)			+= redmi-wmi.o
 obj-$(CONFIG_GIGABYTE_WMI)		+= gigabyte-wmi.o
 obj-$(CONFIG_BITLAND_MIFS_WMI)		+= bitland-mifs-wmi.o
 
diff --git a/drivers/platform/x86/redmi-wmi.c b/drivers/platform/x86/redmi-wmi.c
deleted file mode 100644
index a8eabd93ff3e..000000000000
--- a/drivers/platform/x86/redmi-wmi.c
+++ /dev/null
@@ -1,154 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* WMI driver for Xiaomi Redmibooks */
-
-#include <linux/acpi.h>
-#include <linux/bits.h>
-#include <linux/device.h>
-#include <linux/input.h>
-#include <linux/input/sparse-keymap.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/unaligned.h>
-#include <linux/wmi.h>
-
-#include <uapi/linux/input-event-codes.h>
-
-#define WMI_REDMIBOOK_KEYBOARD_EVENT_GUID "46C93E13-EE9B-4262-8488-563BCA757FEF"
-
-#define AI_KEY_VALUE_MASK BIT(8)
-
-static const struct key_entry redmi_wmi_keymap[] = {
-	{KE_KEY, 0x00000201,	{KEY_SELECTIVE_SCREENSHOT}},
-	{KE_KEY, 0x00000301,	{KEY_ALL_APPLICATIONS}},
-	{KE_KEY, 0x00001b01,	{KEY_CONFIG}},
-	{KE_KEY, 0x00011b01,	{KEY_CONFIG}},
-	{KE_KEY, 0x00010101,	{KEY_SWITCHVIDEOMODE}},
-	{KE_KEY, 0x00001a01,	{KEY_REFRESH_RATE_TOGGLE}},
-
-	/* AI button has code for each position */
-	{KE_KEY, 0x00011801,	{KEY_ASSISTANT}},
-	{KE_KEY, 0x00011901,	{KEY_ASSISTANT}},
-
-	/* Keyboard backlight: Off / Auto / Low / High (new state in byte 2) */
-	{KE_KEY, 0x00000501,	{KEY_KBDILLUMTOGGLE}},
-	{KE_KEY, 0x00800501,	{KEY_KBDILLUMTOGGLE}},
-	{KE_KEY, 0x00050501,	{KEY_KBDILLUMTOGGLE}},
-	{KE_KEY, 0x000a0501,	{KEY_KBDILLUMTOGGLE}},
-
-	/* Xiaomi G Command Center */
-	{KE_KEY, 0x00010a01,	{KEY_VENDOR}},
-
-	/* OEM preset power mode: 1=Balanced 2=Silent 3=Turbo 4=Full speed */
-	{KE_KEY, 0x00011601,	{KEY_PERFORMANCE}},
-	{KE_KEY, 0x00021601,	{KEY_PERFORMANCE}},
-	{KE_KEY, 0x00031601,	{KEY_PERFORMANCE}},
-	{KE_KEY, 0x00041601,	{KEY_PERFORMANCE}},
-
-	/* Fn Lock state: 1=on 0=off */
-	{KE_KEY, 0x00000701,	{KEY_FN_ESC}},
-	{KE_KEY, 0x00010701,	{KEY_FN_ESC}},
-
-	/* Fn+`/1/2/3/4 */
-	{KE_KEY, 0x00011101, {KEY_F13}},
-	{KE_KEY, 0x00011201, {KEY_F14}},
-	{KE_KEY, 0x00011301, {KEY_F15}},
-	{KE_KEY, 0x00011401, {KEY_F16}},
-	{KE_KEY, 0x00011501, {KEY_F17}},
-
-	{KE_END}
-};
-
-struct redmi_wmi {
-	struct input_dev *input_dev;
-	/* Protects the key event sequence */
-	struct mutex key_lock;
-};
-
-static int redmi_wmi_probe(struct wmi_device *wdev, const void *context)
-{
-	struct redmi_wmi *data;
-	int err;
-
-	/* Init dev */
-	data = devm_kzalloc_obj(&wdev->dev, *data);
-	if (!data)
-		return -ENOMEM;
-
-	dev_set_drvdata(&wdev->dev, data);
-
-	err = devm_mutex_init(&wdev->dev, &data->key_lock);
-	if (err)
-		return err;
-
-	data->input_dev = devm_input_allocate_device(&wdev->dev);
-	if (!data->input_dev)
-		return -ENOMEM;
-
-	data->input_dev->name = "Redmibook WMI keys";
-	data->input_dev->phys = "wmi/input0";
-
-	err = sparse_keymap_setup(data->input_dev, redmi_wmi_keymap, NULL);
-	if (err)
-		return err;
-
-	return input_register_device(data->input_dev);
-}
-
-static void redmi_wmi_notify(struct wmi_device *wdev, union acpi_object *obj)
-{
-	struct key_entry *entry;
-	struct redmi_wmi *data = dev_get_drvdata(&wdev->dev);
-	bool autorelease = true;
-	u32 payload;
-	int value = 1;
-
-	if (obj->type != ACPI_TYPE_BUFFER) {
-		dev_err(&wdev->dev, "Bad response type %u\n", obj->type);
-		return;
-	}
-
-	if (obj->buffer.length < 32) {
-		dev_err(&wdev->dev, "Invalid buffer length %u\n", obj->buffer.length);
-		return;
-	}
-
-	payload = get_unaligned_le32(obj->buffer.pointer);
-	entry = sparse_keymap_entry_from_scancode(data->input_dev, payload);
-
-	if (!entry) {
-		dev_dbg(&wdev->dev, "Unknown WMI event with payload %u", payload);
-		return;
-	}
-
-	/* AI key quirk */
-	if (entry->keycode == KEY_ASSISTANT) {
-		value = !(payload & AI_KEY_VALUE_MASK);
-		autorelease = false;
-	}
-
-	guard(mutex)(&data->key_lock);
-	sparse_keymap_report_entry(data->input_dev, entry, value, autorelease);
-}
-
-static const struct wmi_device_id redmi_wmi_id_table[] = {
-	{ WMI_REDMIBOOK_KEYBOARD_EVENT_GUID, NULL },
-	{ }
-};
-
-static struct wmi_driver redmi_wmi_driver = {
-	.driver = {
-		.name = "redmi-wmi",
-		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
-	},
-	.id_table = redmi_wmi_id_table,
-	.min_event_size = 32,
-	.probe = redmi_wmi_probe,
-	.notify = redmi_wmi_notify,
-	.no_singleton = true,
-};
-module_wmi_driver(redmi_wmi_driver);
-
-MODULE_DEVICE_TABLE(wmi, redmi_wmi_id_table);
-MODULE_AUTHOR("Gladyshev Ilya <foxido@foxido.dev>");
-MODULE_DESCRIPTION("Redmibook WMI driver");
-MODULE_LICENSE("GPL");
-- 
2.56.0