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2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c 
 kernel/drivers/platform/x86/acer-wmi.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  *  Acer WMI Laptop Extras
34  *
....@@ -6,20 +7,6 @@
67  *  Based on acer_acpi:
78  *    Copyright (C) 2005-2007	E.M. Smith
89  *    Copyright (C) 2007-2008	Carlos Corbacho <cathectic@gmail.com>
9
- *
10
- *  This program is free software; you can redistribute it and/or modify
11
- *  it under the terms of the GNU General Public License as published by
12
- *  the Free Software Foundation; either version 2 of the License, or
13
- *  (at your option) any later version.
14
- *
15
- *  This program is distributed in the hope that it will be useful,
16
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
17
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18
- *  GNU General Public License for more details.
19
- *
20
- *  You should have received a copy of the GNU General Public License
21
- *  along with this program; if not, write to the Free Software
22
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
2310  */
2411 
2512 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
....@@ -106,6 +93,7 @@
10693 	{KE_KEY, 0x22, {KEY_PROG2} },    /* Arcade */
10794 	{KE_KEY, 0x23, {KEY_PROG3} },    /* P_Key */
10895 	{KE_KEY, 0x24, {KEY_PROG4} },    /* Social networking_Key */
96
+	{KE_KEY, 0x27, {KEY_HELP} },
10997 	{KE_KEY, 0x29, {KEY_PROG3} },    /* P_Key for TM8372 */
11098 	{KE_IGNORE, 0x41, {KEY_MUTE} },
11199 	{KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
....@@ -119,7 +107,13 @@
119107 	{KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
120108 	{KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
121109 	{KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
122
-	{KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
110
+	/*
111
+	 * 0x61 is KEY_SWITCHVIDEOMODE. Usually this is a duplicate input event
112
+	 * with the "Video Bus" input device events. But sometimes it is not
113
+	 * a dup. Map it to KEY_UNKNOWN instead of using KE_IGNORE so that
114
+	 * udev/hwdb can override it on systems where it is not a dup.
115
+	 */
116
+	{KE_KEY, 0x61, {KEY_UNKNOWN} },
123117 	{KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
124118 	{KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
125119 	{KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} },	/* Display Switch */
....@@ -278,7 +272,6 @@
278272 
279273 struct acer_debug {
280274 	struct dentry *root;
281
-	struct dentry *devices;
282275 	u32 wmid_devices;
283276 };
284277 
....@@ -540,6 +533,15 @@
540533 		.matches = {
541534 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
542535 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire SW5-012"),
536
+		},
537
+		.driver_data = (void *)ACER_CAP_KBD_DOCK,
538
+	},
539
+	{
540
+		.callback = set_force_caps,
541
+		.ident = "Acer Aspire Switch V 10 SW5-017",
542
+		.matches = {
543
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Acer"),
544
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "SW5-017"),
543545 		},
544546 		.driver_data = (void *)ACER_CAP_KBD_DOCK,
545547 	},
....@@ -1057,6 +1059,7 @@
10571059 			*value = tmp & 0x1;
10581060 			return 0;
10591061 		}
1062
+		fallthrough;
10601063 	default:
10611064 		return AE_ERROR;
10621065 	}
....@@ -1381,6 +1384,7 @@
13811384 			status = AMW0_get_u32(value, cap);
13821385 			break;
13831386 		}
1387
+		fallthrough;
13841388 	case ACER_WMID:
13851389 		status = WMID_get_u32(value, cap);
13861390 		break;
....@@ -1423,6 +1427,7 @@
14231427 
14241428 				return AMW0_set_u32(value, cap);
14251429 			}
1430
+			fallthrough;
14261431 		case ACER_WMID:
14271432 			return WMID_set_u32(value, cap);
14281433 		case ACER_WMID_v2:
....@@ -1432,6 +1437,7 @@
14321437 				return wmid_v2_set_u32(value, cap);
14331438 			else if (wmi_has_guid(WMID_GUID2))
14341439 				return WMID_set_u32(value, cap);
1440
+			fallthrough;
14351441 		default:
14361442 			return AE_BAD_PARAMETER;
14371443 		}
....@@ -1997,52 +2003,17 @@
19972003 	return status;
19982004 }
19992005 
2000
-#define ACER_WMID_ACCEL_HID	"BST0001"
2001
-
2002
-static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
2003
-						void *ctx, void **retval)
2004
-{
2005
-	struct acpi_device *dev;
2006
-
2007
-	if (!strcmp(ctx, "SENR")) {
2008
-		if (acpi_bus_get_device(ah, &dev))
2009
-			return AE_OK;
2010
-		if (strcmp(ACER_WMID_ACCEL_HID, acpi_device_hid(dev)))
2011
-			return AE_OK;
2012
-	} else
2013
-		return AE_OK;
2014
-
2015
-	*(acpi_handle *)retval = ah;
2016
-
2017
-	return AE_CTRL_TERMINATE;
2018
-}
2019
-
2020
-static int __init acer_wmi_get_handle(const char *name, const char *prop,
2021
-					acpi_handle *ah)
2022
-{
2023
-	acpi_status status;
2024
-	acpi_handle handle;
2025
-
2026
-	BUG_ON(!name || !ah);
2027
-
2028
-	handle = NULL;
2029
-	status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
2030
-					(void *)name, &handle);
2031
-	if (ACPI_SUCCESS(status) && handle) {
2032
-		*ah = handle;
2033
-		return 0;
2034
-	} else {
2035
-		return -ENODEV;
2036
-	}
2037
-}
2038
-
20392006 static int __init acer_wmi_accel_setup(void)
20402007 {
2008
+	struct acpi_device *adev;
20412009 	int err;
20422010 
2043
-	err = acer_wmi_get_handle("SENR", ACER_WMID_ACCEL_HID, &gsensor_handle);
2044
-	if (err)
2045
-		return err;
2011
+	adev = acpi_dev_get_first_match_dev("BST0001", NULL, -1);
2012
+	if (!adev)
2013
+		return -ENODEV;
2014
+
2015
+	gsensor_handle = acpi_device_handle(adev);
2016
+	acpi_dev_put(adev);
20462017 
20472018 	acer_wmi_accel_dev = input_allocate_device();
20482019 	if (!acer_wmi_accel_dev)
....@@ -2266,29 +2237,15 @@
22662237 
22672238 static void remove_debugfs(void)
22682239 {
2269
-	debugfs_remove(interface->debug.devices);
2270
-	debugfs_remove(interface->debug.root);
2240
+	debugfs_remove_recursive(interface->debug.root);
22712241 }
22722242 
2273
-static int __init create_debugfs(void)
2243
+static void __init create_debugfs(void)
22742244 {
22752245 	interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2276
-	if (!interface->debug.root) {
2277
-		pr_err("Failed to create debugfs directory");
2278
-		return -ENOMEM;
2279
-	}
22802246 
2281
-	interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2282
-					interface->debug.root,
2283
-					&interface->debug.wmid_devices);
2284
-	if (!interface->debug.devices)
2285
-		goto error_debugfs;
2286
-
2287
-	return 0;
2288
-
2289
-error_debugfs:
2290
-	remove_debugfs();
2291
-	return -ENOMEM;
2247
+	debugfs_create_u32("devices", S_IRUGO, interface->debug.root,
2248
+			   &interface->debug.wmid_devices);
22922249 }
22932250 
22942251 static int __init acer_wmi_init(void)
....@@ -2425,9 +2382,7 @@
24252382 
24262383 	if (wmi_has_guid(WMID_GUID2)) {
24272384 		interface->debug.wmid_devices = get_wmid_devices();
2428
-		err = create_debugfs();
2429
-		if (err)
2430
-			goto error_create_debugfs;
2385
+		create_debugfs();
24312386 	}
24322387 
24332388 	/* Override any initial settings with values from the commandline */
....@@ -2435,8 +2390,6 @@
24352390 
24362391 	return 0;
24372392 
2438
-error_create_debugfs:
2439
-	platform_device_del(acer_platform_device);
24402393 error_device_add:
24412394 	platform_device_put(acer_platform_device);
24422395 error_device_alloc: