Merge tag 'platform-drivers-x86-v5.4-1' of git://git.infradead.org/li…

…nux-platform-drivers-x86

Pull x86 platform-drivers updates from Andy Shevchenko:

 - ASUS WMI driver got a couple of updates, i.e. support of FAN is fixed
   for recent products and the charge threshold support has been added

 - Two uknown key events for Dell laptops are being ignored now to avoid
   spamming users with harmless messages

 - HP ZBook 17 G5 and ASUS Zenbook UX430UNR got accelerometer support.

 - Intel CherryTrail platforms had a regression with wake up. Now it's
   fixed

 - Intel PMC driver got fixed in order to work nicely in Xen
   environment

 - Intel Speed Select driver provides bucket vs core count relationship.
   Besides that the tools has been updated for better output

 - The PrivacyGuard is enabled on Lenovo ThinkPad laptops

 - Three tablets - Trekstor Primebook C11B 2-in-1, Irbis TW90 and Chuwi
   Surbook Mini - got touchscreen support

* tag 'platform-drivers-x86-v5.4-1' of git://git.infradead.org/linux-platform-drivers-x86: (53 commits)
  MAINTAINERS: Switch PDx86 subsystem status to Odd Fixes
  platform/x86: asus-wmi: Refactor charge threshold to use the battery hooking API
  platform/x86: asus-wmi: Rename CHARGE_THRESHOLD to RSOC
  platform/x86: asus-wmi: Reorder ASUS_WMI_CHARGE_THRESHOLD
  tools/power/x86/intel-speed-select: Display core count for bucket
  platform/x86: ISST: Allow additional TRL MSRs
  tools/power/x86/intel-speed-select: Fix memory leak
  tools/power/x86/intel-speed-select: Output success/failed for command output
  tools/power/x86/intel-speed-select: Output human readable CPU list
  tools/power/x86/intel-speed-select: Change turbo ratio output to maximum turbo frequency
  tools/power/x86/intel-speed-select: Switch output to MHz
  tools/power/x86/intel-speed-select: Simplify output for turbo-freq and base-freq
  tools/power/x86/intel-speed-select: Fix cpu-count output
  tools/power/x86/intel-speed-select: Fix help option typo
  tools/power/x86/intel-speed-select: Fix package typo
  tools/power/x86/intel-speed-select: Fix a read overflow in isst_set_tdp_level_msr()
  platform/x86: intel_int0002_vgpio: Use device_init_wakeup
  platform/x86: intel_int0002_vgpio: Fix wakeups not working on Cherry Trail
  platform/x86: compal-laptop: Initialize "value" in ec_read_u8()
  platform/x86: touchscreen_dmi: Add info for the Trekstor Primebook C11B 2-in-1
  ...

Documentation/admin-guide/laptops/thinkpad-acpi.rst

@@ -49,6 +49,7 @@ detailed description):
 	- Fan control and monitoring: fan speed, fan enable/disable
 	- WAN enable and disable
 	- UWB enable and disable
+	- LCD Shadow (PrivacyGuard) enable and disable
 
 A compatibility table by model and feature is maintained on the web
 site, http://ibm-acpi.sf.net/. I appreciate any success or failure
@@ -1409,6 +1410,28 @@ Sysfs notes
 	Documentation/driver-api/rfkill.rst for details.
 
 
+LCD Shadow control
+------------------
+
+procfs: /proc/acpi/ibm/lcdshadow
+
+Some newer T480s and T490s ThinkPads provide a feature called
+PrivacyGuard. By turning this feature on, the usable vertical and
+horizontal viewing angles of the LCD can be limited (as if some privacy
+screen was applied manually in front of the display).
+
+procfs notes
+^^^^^^^^^^^^
+
+The available commands are::
+
+	echo '0' >/proc/acpi/ibm/lcdshadow
+	echo '1' >/proc/acpi/ibm/lcdshadow
+
+The first command ensures the best viewing angle and the latter one turns
+on the feature, restricting the viewing angles.
+
+
 EXPERIMENTAL: UWB
 -----------------
 

MAINTAINERS

@@ -17512,7 +17512,7 @@ M:	Darren Hart <dvhart@infradead.org>
 M:	Andy Shevchenko <andy@infradead.org>
 L:	platform-driver-x86@vger.kernel.org
 T:	git git://git.infradead.org/linux-platform-drivers-x86.git
-S:	Maintained
+S:	Odd Fixes
 F:	drivers/platform/x86/
 F:	drivers/platform/olpc/
 

drivers/platform/mellanox/mlxreg-hotplug.c

@@ -642,11 +642,8 @@ static int mlxreg_hotplug_probe(struct platform_device *pdev)
 		priv->irq = pdata->irq;
 	} else {
 		priv->irq = platform_get_irq(pdev, 0);
-		if (priv->irq < 0) {
-			dev_err(&pdev->dev, "Failed to get platform irq: %d\n",
-				priv->irq);
+		if (priv->irq < 0)
 			return priv->irq;
-		}
 	}
 
 	priv->regmap = pdata->regmap;

drivers/platform/x86/acer-wmi.c

@@ -1881,52 +1881,17 @@ static int __init acer_wmi_enable_rf_button(void)
 	return status;
 }
 
-#define ACER_WMID_ACCEL_HID	"BST0001"
-
-static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
-						void *ctx, void **retval)
-{
-	struct acpi_device *dev;
-
-	if (!strcmp(ctx, "SENR")) {
-		if (acpi_bus_get_device(ah, &dev))
-			return AE_OK;
-		if (strcmp(ACER_WMID_ACCEL_HID, acpi_device_hid(dev)))
-			return AE_OK;
-	} else
-		return AE_OK;
-
-	*(acpi_handle *)retval = ah;
-
-	return AE_CTRL_TERMINATE;
-}
-
-static int __init acer_wmi_get_handle(const char *name, const char *prop,
-					acpi_handle *ah)
-{
-	acpi_status status;
-	acpi_handle handle;
-
-	BUG_ON(!name || !ah);
-
-	handle = NULL;
-	status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
-					(void *)name, &handle);
-	if (ACPI_SUCCESS(status) && handle) {
-		*ah = handle;
-		return 0;
-	} else {
-		return -ENODEV;
-	}
-}
-
 static int __init acer_wmi_accel_setup(void)
 {
+	struct acpi_device *adev;
 	int err;
 
-	err = acer_wmi_get_handle("SENR", ACER_WMID_ACCEL_HID, &gsensor_handle);
-	if (err)
-		return err;
+	adev = acpi_dev_get_first_match_dev("BST0001", NULL, -1);
+	if (!adev)
+		return -ENODEV;
+
+	gsensor_handle = acpi_device_handle(adev);
+	acpi_dev_put(adev);
 
 	interface->capability |= ACER_CAP_ACCEL;
 

drivers/platform/x86/asus-nb-wmi.c

@@ -402,6 +402,15 @@ static const struct dmi_system_id asus_quirks[] = {
 		},
 		.driver_data = &quirk_asus_forceals,
 	},
+	{
+		.callback = dmi_matched,
+		.ident = "ASUSTeK COMPUTER INC. UX430UNR",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "UX430UNR"),
+		},
+		.driver_data = &quirk_asus_forceals,
+	},
 	{},
 };