Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *  Intel Virtual Button driver for Windows 8.1+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *  Copyright (C) 2016 AceLan Kao <acelan.kao@canonical.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *  Copyright (C) 2016 Alex Hung <alex.hung@canonical.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/dmi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/input/sparse-keymap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/suspend.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) /* Returned when NOT in tablet mode on some HP Stream x360 11 models */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #define VGBS_TABLET_MODE_FLAG_ALT	0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) /* When NOT in tablet mode, VGBS returns with the flag 0x40 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #define VGBS_TABLET_MODE_FLAG		0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #define VGBS_DOCK_MODE_FLAG		0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define VGBS_TABLET_MODE_FLAGS (VGBS_TABLET_MODE_FLAG | VGBS_TABLET_MODE_FLAG_ALT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) MODULE_AUTHOR("AceLan Kao");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) static const struct acpi_device_id intel_vbtn_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	{"INT33D6", 0},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	{"", 0},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) MODULE_DEVICE_TABLE(acpi, intel_vbtn_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) /* In theory, these are HID usages. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) static const struct key_entry intel_vbtn_keymap[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	{ KE_KEY, 0xC0, { KEY_POWER } },	/* power key press */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	{ KE_IGNORE, 0xC1, { KEY_POWER } },	/* power key release */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	{ KE_KEY, 0xC2, { KEY_LEFTMETA } },		/* 'Windows' key press */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	{ KE_KEY, 0xC3, { KEY_LEFTMETA } },		/* 'Windows' key release */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	{ KE_KEY, 0xC4, { KEY_VOLUMEUP } },		/* volume-up key press */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	{ KE_IGNORE, 0xC5, { KEY_VOLUMEUP } },		/* volume-up key release */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	{ KE_KEY, 0xC6, { KEY_VOLUMEDOWN } },		/* volume-down key press */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	{ KE_IGNORE, 0xC7, { KEY_VOLUMEDOWN } },	/* volume-down key release */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	{ KE_KEY,    0xC8, { KEY_ROTATE_LOCK_TOGGLE } },	/* rotate-lock key press */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	{ KE_KEY,    0xC9, { KEY_ROTATE_LOCK_TOGGLE } },	/* rotate-lock key release */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) static const struct key_entry intel_vbtn_switchmap[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	 * SW_DOCK should only be reported for docking stations, but DSDTs using the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	 * intel-vbtn code, always seem to use this for 2-in-1s / convertibles and set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	 * SW_DOCK=1 when in laptop-mode (in tandem with setting SW_TABLET_MODE=0).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	 * This causes userspace to think the laptop is docked to a port-replicator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	 * and to disable suspend-on-lid-close, which is undesirable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	 * Map the dock events to KEY_IGNORE to avoid this broken SW_DOCK reporting.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	{ KE_IGNORE, 0xCA, { .sw = { SW_DOCK, 1 } } },		/* Docked */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	{ KE_IGNORE, 0xCB, { .sw = { SW_DOCK, 0 } } },		/* Undocked */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	{ KE_SW,     0xCC, { .sw = { SW_TABLET_MODE, 1 } } },	/* Tablet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	{ KE_SW,     0xCD, { .sw = { SW_TABLET_MODE, 0 } } },	/* Laptop */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) #define KEYMAP_LEN \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	(ARRAY_SIZE(intel_vbtn_keymap) + ARRAY_SIZE(intel_vbtn_switchmap) + 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) struct intel_vbtn_priv {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	struct key_entry keymap[KEYMAP_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	struct input_dev *input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	bool has_buttons;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	bool has_switches;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	bool wakeup_mode;
^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 void detect_tablet_mode(struct platform_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	struct intel_vbtn_priv *priv = dev_get_drvdata(&device->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	acpi_handle handle = ACPI_HANDLE(&device->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	unsigned long long vgbs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	int m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	status = acpi_evaluate_integer(handle, "VGBS", NULL, &vgbs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	if (ACPI_FAILURE(status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	m = !(vgbs & VGBS_TABLET_MODE_FLAGS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	input_report_switch(priv->input_dev, SW_TABLET_MODE, m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	m = (vgbs & VGBS_DOCK_MODE_FLAG) ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	input_report_switch(priv->input_dev, SW_DOCK, m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) static int intel_vbtn_input_setup(struct platform_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	struct intel_vbtn_priv *priv = dev_get_drvdata(&device->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	int ret, keymap_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	if (priv->has_buttons) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 		memcpy(&priv->keymap[keymap_len], intel_vbtn_keymap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		       ARRAY_SIZE(intel_vbtn_keymap) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 		       sizeof(struct key_entry));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 		keymap_len += ARRAY_SIZE(intel_vbtn_keymap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	if (priv->has_switches) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		memcpy(&priv->keymap[keymap_len], intel_vbtn_switchmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 		       ARRAY_SIZE(intel_vbtn_switchmap) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		       sizeof(struct key_entry));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		keymap_len += ARRAY_SIZE(intel_vbtn_switchmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	priv->keymap[keymap_len].type = KE_END;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	priv->input_dev = devm_input_allocate_device(&device->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	if (!priv->input_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	ret = sparse_keymap_setup(priv->input_dev, priv->keymap, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	priv->input_dev->dev.parent = &device->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	priv->input_dev->name = "Intel Virtual Button driver";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	priv->input_dev->id.bustype = BUS_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	if (priv->has_switches)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		detect_tablet_mode(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	return input_register_device(priv->input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) static void notify_handler(acpi_handle handle, u32 event, void *context)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	struct platform_device *device = context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	struct intel_vbtn_priv *priv = dev_get_drvdata(&device->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	unsigned int val = !(event & 1); /* Even=press, Odd=release */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	const struct key_entry *ke, *ke_rel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	bool autorelease;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	if (priv->wakeup_mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 		ke = sparse_keymap_entry_from_scancode(priv->input_dev, event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		if (ke) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 			pm_wakeup_hard_event(&device->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 			/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 			 * Switch events like tablet mode will wake the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 			 * and report the new switch position to the input
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 			 * subsystem.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 			 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 			if (ke->type == KE_SW)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 				sparse_keymap_report_event(priv->input_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 							   event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 							   val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 							   0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 			return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		goto out_unknown;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	 * Even press events are autorelease if there is no corresponding odd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	 * release event, or if the odd event is KE_IGNORE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	ke_rel = sparse_keymap_entry_from_scancode(priv->input_dev, event | 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	autorelease = val && (!ke_rel || ke_rel->type == KE_IGNORE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	if (sparse_keymap_report_event(priv->input_dev, event, val, autorelease))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) out_unknown:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	dev_dbg(&device->dev, "unknown event index 0x%x\n", event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static bool intel_vbtn_has_buttons(acpi_handle handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^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 = acpi_evaluate_object(handle, "VBDL", NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	return ACPI_SUCCESS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)  * There are several laptops (non 2-in-1) models out there which support VGBS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)  * but simply always return 0, which we translate to SW_TABLET_MODE=1. This in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)  * turn causes userspace (libinput) to suppress events from the builtin
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)  * keyboard and touchpad, making the laptop essentially unusable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)  * Since the problem of wrongly reporting SW_TABLET_MODE=1 in combination
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)  * with libinput, leads to a non-usable system. Where as OTOH many people will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)  * not even notice when SW_TABLET_MODE is not being reported, a DMI based allow
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)  * list is used here. This list mainly matches on the chassis-type of 2-in-1s.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)  * There are also some 2-in-1s which use the intel-vbtn ACPI interface to report
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)  * SW_TABLET_MODE with a chassis-type of 8 ("Portable") or 10 ("Notebook"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)  * these are matched on a per model basis, since many normal laptops with a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)  * possible broken VGBS ACPI-method also use these chassis-types.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) static const struct dmi_system_id dmi_switches_allow_list[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		.matches = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 			DMI_EXACT_MATCH(DMI_CHASSIS_TYPE, "31" /* Convertible */),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		.matches = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 			DMI_EXACT_MATCH(DMI_CHASSIS_TYPE, "32" /* Detachable */),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		},
^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) 		.matches = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 			DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7130"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		.matches = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 			DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 			DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion 13 x360 PC"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 		.matches = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 			DMI_MATCH(DMI_PRODUCT_NAME, "Switch SA5-271"),
^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) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		.matches = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 			DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7352"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	{} /* Array terminator */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static bool intel_vbtn_has_switches(acpi_handle handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	unsigned long long vgbs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	if (!dmi_check_system(dmi_switches_allow_list))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	status = acpi_evaluate_integer(handle, "VGBS", NULL, &vgbs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	return ACPI_SUCCESS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) static int intel_vbtn_probe(struct platform_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	acpi_handle handle = ACPI_HANDLE(&device->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	bool has_buttons, has_switches;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	struct intel_vbtn_priv *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	acpi_status status;
^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) 	has_buttons = intel_vbtn_has_buttons(handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	has_switches = intel_vbtn_has_switches(handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	if (!has_buttons && !has_switches) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 		dev_warn(&device->dev, "failed to read Intel Virtual Button driver\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	if (!priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	dev_set_drvdata(&device->dev, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	priv->has_buttons = has_buttons;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	priv->has_switches = has_switches;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	err = intel_vbtn_input_setup(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 		pr_err("Failed to setup Intel Virtual Button\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	status = acpi_install_notify_handler(handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 					     ACPI_DEVICE_NOTIFY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 					     notify_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 					     device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	if (ACPI_FAILURE(status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 		return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	device_init_wakeup(&device->dev, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	 * In order for system wakeup to work, the EC GPE has to be marked as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	 * a wakeup one, so do that here (this setting will persist, but it has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	 * no effect until the wakeup mask is set for the EC GPE).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	acpi_ec_mark_gpe_for_wake();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) static int intel_vbtn_remove(struct platform_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	acpi_handle handle = ACPI_HANDLE(&device->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	device_init_wakeup(&device->dev, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	acpi_remove_notify_handler(handle, ACPI_DEVICE_NOTIFY, notify_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	 * Even if we failed to shut off the event stream, we can still
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	 * safely detach from the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	return 0;
^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) static int intel_vbtn_pm_prepare(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	if (device_may_wakeup(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 		struct intel_vbtn_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 		priv->wakeup_mode = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	return 0;
^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) static void intel_vbtn_pm_complete(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 	struct intel_vbtn_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	priv->wakeup_mode = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) static int intel_vbtn_pm_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	intel_vbtn_pm_complete(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) static const struct dev_pm_ops intel_vbtn_pm_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	.prepare = intel_vbtn_pm_prepare,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	.complete = intel_vbtn_pm_complete,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	.resume = intel_vbtn_pm_resume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 	.restore = intel_vbtn_pm_resume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	.thaw = intel_vbtn_pm_resume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) static struct platform_driver intel_vbtn_pl_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 		.name = "intel-vbtn",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 		.acpi_match_table = intel_vbtn_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 		.pm = &intel_vbtn_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 	.probe = intel_vbtn_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	.remove = intel_vbtn_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) static acpi_status __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) check_acpi_dev(acpi_handle handle, u32 lvl, void *context, void **rv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 	const struct acpi_device_id *ids = context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 	struct acpi_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 	if (acpi_bus_get_device(handle, &dev) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 		return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 	if (acpi_match_device_ids(dev, ids) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 		if (!IS_ERR_OR_NULL(acpi_create_platform_device(dev, NULL)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 			dev_info(&dev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 				 "intel-vbtn: created platform device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 	return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) static int __init intel_vbtn_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 	acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 			    ACPI_UINT32_MAX, check_acpi_dev, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 			    (void *)intel_vbtn_ids, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 	return platform_driver_register(&intel_vbtn_pl_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) module_init(intel_vbtn_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) static void __exit intel_vbtn_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 	platform_driver_unregister(&intel_vbtn_pl_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) module_exit(intel_vbtn_exit);