Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * MSI WMI hotkeys
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2009 Novell <trenn@suse.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Most stuff taken over from hp-wmi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/input/sparse-keymap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/backlight.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <acpi/video.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) MODULE_AUTHOR("Thomas Renninger <trenn@suse.de>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) MODULE_DESCRIPTION("MSI laptop WMI hotkeys driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define DRV_NAME "msi-wmi"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define MSIWMI_BIOS_GUID "551A1F84-FBDD-4125-91DB-3EA8F44F1D45"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define MSIWMI_MSI_EVENT_GUID "B6F3EEF2-3D2F-49DC-9DE3-85BCE18C62F2"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define MSIWMI_WIND_EVENT_GUID "5B3CC38A-40D9-7245-8AE6-1145B751BE3F"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) MODULE_ALIAS("wmi:" MSIWMI_BIOS_GUID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) MODULE_ALIAS("wmi:" MSIWMI_MSI_EVENT_GUID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) MODULE_ALIAS("wmi:" MSIWMI_WIND_EVENT_GUID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) enum msi_scancodes {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	/* Generic MSI keys (not present on MSI Wind) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	MSI_KEY_BRIGHTNESSUP	= 0xD0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	MSI_KEY_BRIGHTNESSDOWN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	MSI_KEY_VOLUMEUP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	MSI_KEY_VOLUMEDOWN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	MSI_KEY_MUTE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	/* MSI Wind keys */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	WIND_KEY_TOUCHPAD	= 0x08,	/* Fn+F3 touchpad toggle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	WIND_KEY_BLUETOOTH	= 0x56,	/* Fn+F11 Bluetooth toggle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	WIND_KEY_CAMERA,		/* Fn+F6 webcam toggle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	WIND_KEY_WLAN		= 0x5f,	/* Fn+F11 Wi-Fi toggle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	WIND_KEY_TURBO,			/* Fn+F10 turbo mode toggle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	WIND_KEY_ECO		= 0x69,	/* Fn+F10 ECO mode toggle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) static struct key_entry msi_wmi_keymap[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	{ KE_KEY, MSI_KEY_BRIGHTNESSUP,		{KEY_BRIGHTNESSUP} },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	{ KE_KEY, MSI_KEY_BRIGHTNESSDOWN,	{KEY_BRIGHTNESSDOWN} },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	{ KE_KEY, MSI_KEY_VOLUMEUP,		{KEY_VOLUMEUP} },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	{ KE_KEY, MSI_KEY_VOLUMEDOWN,		{KEY_VOLUMEDOWN} },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	{ KE_KEY, MSI_KEY_MUTE,			{KEY_MUTE} },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	/* These keys work without WMI. Ignore them to avoid double keycodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	{ KE_IGNORE, WIND_KEY_TOUCHPAD,		{KEY_TOUCHPAD_TOGGLE} },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	{ KE_IGNORE, WIND_KEY_BLUETOOTH,	{KEY_BLUETOOTH} },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	{ KE_IGNORE, WIND_KEY_CAMERA,		{KEY_CAMERA} },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	{ KE_IGNORE, WIND_KEY_WLAN,		{KEY_WLAN} },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	/* These are unknown WMI events found on MSI Wind */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	{ KE_IGNORE, 0x00 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	{ KE_IGNORE, 0x62 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	{ KE_IGNORE, 0x63 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	/* These are MSI Wind keys that should be handled via WMI */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	{ KE_KEY, WIND_KEY_TURBO,		{KEY_PROG1} },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	{ KE_KEY, WIND_KEY_ECO,			{KEY_PROG2} },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	{ KE_END, 0 }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) static ktime_t last_pressed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) static const struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	const char *guid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	bool quirk_last_pressed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) } *event_wmi, event_wmis[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	{ MSIWMI_MSI_EVENT_GUID, true },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	{ MSIWMI_WIND_EVENT_GUID, false },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) static struct backlight_device *backlight;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) static int backlight_map[] = { 0x00, 0x33, 0x66, 0x99, 0xCC, 0xFF };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) static struct input_dev *msi_wmi_input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) static int msi_wmi_query_block(int instance, int *ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	union acpi_object *obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	status = wmi_query_block(MSIWMI_BIOS_GUID, instance, &output);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	obj = output.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	if (!obj || obj->type != ACPI_TYPE_INTEGER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 		if (obj) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 			pr_err("query block returned object "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 			       "type: %d - buffer length:%d\n", obj->type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 			       obj->type == ACPI_TYPE_BUFFER ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 			       obj->buffer.length : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		kfree(obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	*ret = obj->integer.value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	kfree(obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static int msi_wmi_set_block(int instance, int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	struct acpi_buffer input = { sizeof(int), &value };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	pr_debug("Going to set block of instance: %d - value: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 		 instance, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	status = wmi_set_block(MSIWMI_BIOS_GUID, instance, &input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	return ACPI_SUCCESS(status) ? 0 : 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) static int bl_get(struct backlight_device *bd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	int level, err, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	/* Instance 1 is "get backlight", cmp with DSDT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	err = msi_wmi_query_block(1, &ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		pr_err("Could not query backlight: %d\n", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	pr_debug("Get: Query block returned: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	for (level = 0; level < ARRAY_SIZE(backlight_map); level++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 		if (backlight_map[level] == ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 			pr_debug("Current backlight level: 0x%X - index: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 				 backlight_map[level], level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	if (level == ARRAY_SIZE(backlight_map)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		pr_err("get: Invalid brightness value: 0x%X\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	return level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static int bl_set_status(struct backlight_device *bd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	int bright = bd->props.brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	if (bright >= ARRAY_SIZE(backlight_map) || bright < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	/* Instance 0 is "set backlight" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	return msi_wmi_set_block(0, backlight_map[bright]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) static const struct backlight_ops msi_backlight_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	.get_brightness	= bl_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	.update_status	= bl_set_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) static void msi_wmi_notify(u32 value, void *context)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	struct key_entry *key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	union acpi_object *obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	status = wmi_get_event_data(value, &response);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	if (status != AE_OK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		pr_info("bad event status 0x%x\n", status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	obj = (union acpi_object *)response.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	if (obj && obj->type == ACPI_TYPE_INTEGER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		int eventcode = obj->integer.value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 		pr_debug("Eventcode: 0x%x\n", eventcode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 		key = sparse_keymap_entry_from_scancode(msi_wmi_input_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 				eventcode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		if (!key) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 			pr_info("Unknown key pressed - %x\n", eventcode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 			goto msi_wmi_notify_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 		if (event_wmi->quirk_last_pressed) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 			ktime_t cur = ktime_get_real();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 			ktime_t diff = ktime_sub(cur, last_pressed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 			/* Ignore event if any event happened in a 50 ms
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 			   timeframe -> Key press may result in 10-20 GPEs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 			if (ktime_to_us(diff) < 1000 * 50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 				pr_debug("Suppressed key event 0x%X - "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 					 "Last press was %lld us ago\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 					 key->code, ktime_to_us(diff));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 				goto msi_wmi_notify_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 			last_pressed = cur;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 		if (key->type == KE_KEY &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 		/* Brightness is served via acpi video driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 		(backlight ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		(key->code != MSI_KEY_BRIGHTNESSUP &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 		key->code != MSI_KEY_BRIGHTNESSDOWN))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 			pr_debug("Send key: 0x%X - Input layer keycode: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 				 key->code, key->keycode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 			sparse_keymap_report_entry(msi_wmi_input_dev, key, 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 						   true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	} else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		pr_info("Unknown event received\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) msi_wmi_notify_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	kfree(response.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static int __init msi_wmi_backlight_setup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	struct backlight_properties props;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	memset(&props, 0, sizeof(struct backlight_properties));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	props.type = BACKLIGHT_PLATFORM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	props.max_brightness = ARRAY_SIZE(backlight_map) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	backlight = backlight_device_register(DRV_NAME, NULL, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 					      &msi_backlight_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 					      &props);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	if (IS_ERR(backlight))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		return PTR_ERR(backlight);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	err = bl_get(NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		backlight_device_unregister(backlight);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	backlight->props.brightness = err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) static int __init msi_wmi_input_setup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	msi_wmi_input_dev = input_allocate_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	if (!msi_wmi_input_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	msi_wmi_input_dev->name = "MSI WMI hotkeys";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	msi_wmi_input_dev->phys = "wmi/input0";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	msi_wmi_input_dev->id.bustype = BUS_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	err = sparse_keymap_setup(msi_wmi_input_dev, msi_wmi_keymap, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 		goto err_free_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	err = input_register_device(msi_wmi_input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 		goto err_free_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	last_pressed = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) err_free_dev:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	input_free_device(msi_wmi_input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) static int __init msi_wmi_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	for (i = 0; i < ARRAY_SIZE(event_wmis); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 		if (!wmi_has_guid(event_wmis[i].guid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 		err = msi_wmi_input_setup();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 		if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 			pr_err("Unable to setup input device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 		err = wmi_install_notify_handler(event_wmis[i].guid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 			msi_wmi_notify, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 		if (ACPI_FAILURE(err)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 			pr_err("Unable to setup WMI notify handler\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 			goto err_free_input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 		pr_debug("Event handler installed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 		event_wmi = &event_wmis[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	if (wmi_has_guid(MSIWMI_BIOS_GUID) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	    acpi_video_get_backlight_type() == acpi_backlight_vendor) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 		err = msi_wmi_backlight_setup();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 		if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 			pr_err("Unable to setup backlight device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 			goto err_uninstall_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 		pr_debug("Backlight device created\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 	if (!event_wmi && !backlight) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 		pr_err("This machine doesn't have neither MSI-hotkeys nor backlight through WMI\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) err_uninstall_handler:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	if (event_wmi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 		wmi_remove_notify_handler(event_wmi->guid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) err_free_input:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	if (event_wmi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 		input_unregister_device(msi_wmi_input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) static void __exit msi_wmi_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	if (event_wmi) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 		wmi_remove_notify_handler(event_wmi->guid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 		input_unregister_device(msi_wmi_input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 	backlight_device_unregister(backlight);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) module_init(msi_wmi_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) module_exit(msi_wmi_exit);