Merge tag 'platform-drivers-x86-v5.9-1' of git://git.infradead.org/linux-platform-drivers-x86

Pull x86 platform driver updates from Andy Shevchenko:

 - ASUS WMI driver honors BAT1 name of the battery (quite a few new
   laptops are using it)

 - Dell WMI driver supports new key codes and backlight events

 - ThinkPad ACPI driver now may use standard charge threshold interface,
   it also has been updated to provide Laptop or Desktop mode to the
   user

 - Intel Speed Select Technology gained support on Sapphire Rapids
   platform

 - Regular update of Speed Select Technology tools

 - Mellanox has been updated to support complex attributes

 - PMC core driver has been fixed to show correct names for LPM0
   register

 - HTTP links were replaced by HTTPS ones where it applies

 - Miscellaneous fixes and cleanups here and there

* tag 'platform-drivers-x86-v5.9-1' of git://git.infradead.org/linux-platform-drivers-x86: (42 commits)
  platform/x86: asus-nb-wmi: Drop duplicate DMI quirk structures
  platform/x86: thinkpad_acpi: Make some symbols static
  platform/x86: thinkpad_acpi: add documentation for battery charge control
  platform/x86: thinkpad_acpi: use standard charge control attribute names
  platform/x86: thinkpad_acpi: remove unused defines
  platform/x86: ISST: drop a duplicated word in isst_if.h
  tools/power/x86/intel-speed-select: Update version for v5.9
  tools/power/x86/intel-speed-select: Add retries for mail box commands
  tools/power/x86/intel-speed-select: Add option to delay mbox commands
  tools/power/x86/intel-speed-select: Ignore -o option processing on error
  tools/power/x86/intel-speed-select: Change path for caching topology info
  platform/x86: acerhdf: Replace HTTP links with HTTPS ones
  platform/x86: apple-gmux: Replace HTTP links with HTTPS ones
  platform/x86: pcengines-apuv2: revert wiring up simswitch GPIO as LED
  platform/x86: mlx-platform: Extend FAN platform data description
  platform_data/mlxreg: Add presence register field for FAN devices
  Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces
  platform/mellanox: mlxreg-io: Add support for complex attributes
  platform/x86: mlx-platform: Add more definitions for system attributes
  platform_data/mlxreg: Add support for complex attributes
  ...

Documentation/ABI/stable/sysfs-driver-mlxreg-io

@@ -206,3 +206,20 @@ Description:	This file exposes the firmware version of burnable voltage
 		regulator devices.
 
 		The file is read only.
+
+What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld1_pn
+What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld2_pn
+What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld3_pn
+What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld4_pn
+What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld1_version_min
+What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld2_version_min
+What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld3_version_min
+What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld4_version_min
+Date:		July 2020
+KernelVersion:	5.9
+Contact:	Vadim Pasternak <vadimpmellanox.com>
+Description:	These files show with which CPLD part numbers and minor
+		versions have been burned CPLD devices equipped on a
+		system.
+
+		The files are read only.

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

@@ -50,6 +50,7 @@ detailed description):
 	- WAN enable and disable
 	- UWB enable and disable
 	- LCD Shadow (PrivacyGuard) enable and disable
+	- Lap mode sensor
 
 A compatibility table by model and feature is maintained on the web
 site, http://ibm-acpi.sf.net/. I appreciate any success or failure
@@ -1432,6 +1433,20 @@ The first command ensures the best viewing angle and the latter one turns
 on the feature, restricting the viewing angles.
 
 
+DYTC Lapmode sensor
+------------------
+
+sysfs: dytc_lapmode
+
+Newer thinkpads and mobile workstations have the ability to determine if
+the device is in deskmode or lapmode. This feature is used by user space
+to decide if WWAN transmission can be increased to maximum power and is
+also useful for understanding the different thermal modes available as
+they differ between desk and lap mode.
+
+The property is read-only. If the platform doesn't have support the sysfs
+class is not created.
+
 EXPERIMENTAL: UWB
 -----------------
 
@@ -1470,6 +1485,23 @@ For more details about which buttons will appear depending on the mode, please
 review the laptop's user guide:
 http://www.lenovo.com/shop/americas/content/user_guides/x1carbon_2_ug_en.pdf
 
+Battery charge control
+----------------------
+
+sysfs attributes:
+/sys/class/power_supply/BAT*/charge_control_{start,end}_threshold
+
+These two attributes are created for those batteries that are supported by the
+driver. They enable the user to control the battery charge thresholds of the
+given battery. Both values may be read and set. `charge_control_start_threshold`
+accepts an integer between 0 and 99 (inclusive); this value represents a battery
+percentage level, below which charging will begin. `charge_control_end_threshold`
+accepts an integer between 1 and 100 (inclusive); this value represents a battery
+percentage level, above which charging will stop.
+
+The exact semantics of the attributes may be found in
+Documentation/ABI/testing/sysfs-class-power.
+
 Multiple Commands, Module Parameters
 ------------------------------------
 

MAINTAINERS

@@ -8610,6 +8610,12 @@ L:	platform-driver-x86@vger.kernel.org
 S:	Maintained
 F:	drivers/platform/x86/intel_atomisp2_pm.c
 
+INTEL ATOMISP2 LED DRIVER
+M:	Hans de Goede <hdegoede@redhat.com>
+L:	platform-driver-x86@vger.kernel.org
+S:	Maintained
+F:	drivers/platform/x86/intel_atomisp2_led.c
+
 INTEL BROXTON PMC DRIVER
 M:	Mika Westerberg <mika.westerberg@linux.intel.com>
 M:	Zha Qipeng <qipeng.zha@intel.com>

drivers/platform/mellanox/mlxreg-hotplug.c

+// SPDX-License-Identifier: GPL-2.0+
 /*
- * Copyright (c) 2016-2018 Mellanox Technologies. All rights reserved.
- * Copyright (c) 2016-2018 Vadim Pasternak <vadimp@mellanox.com>
+ * Mellanox hotplug driver
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the names of the copyright holders nor the names of its
- *    contributors may be used to endorse or promote products derived from
- *    this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
+ * Copyright (C) 2016-2020 Mellanox Technologies
  */
 
 #include <linux/bitops.h>
@@ -42,6 +16,7 @@
 #include <linux/platform_data/mlxreg.h>
 #include <linux/platform_device.h>
 #include <linux/spinlock.h>
+#include <linux/string_helpers.h>
 #include <linux/regmap.h>
 #include <linux/workqueue.h>
 
@@ -97,6 +72,23 @@ struct mlxreg_hotplug_priv_data {
 	u8 not_asserted;
 };
 
+/* Environment variables array for udev. */
+static char *mlxreg_hotplug_udev_envp[] = { NULL, NULL };
+
+static int
+mlxreg_hotplug_udev_event_send(struct kobject *kobj,
+			       struct mlxreg_core_data *data, bool action)
+{
+	char event_str[MLXREG_CORE_LABEL_MAX_SIZE + 2];
+	char label[MLXREG_CORE_LABEL_MAX_SIZE] = { 0 };
+
+	mlxreg_hotplug_udev_envp[0] = event_str;
+	string_upper(label, data->label);
+	snprintf(event_str, MLXREG_CORE_LABEL_MAX_SIZE, "%s=%d", label, !!action);
+
+	return kobject_uevent_env(kobj, KOBJ_CHANGE, mlxreg_hotplug_udev_envp);
+}
+
 static int mlxreg_hotplug_device_create(struct mlxreg_hotplug_priv_data *priv,
 					struct mlxreg_core_data *data)
 {
@@ -104,7 +96,7 @@ static int mlxreg_hotplug_device_create(struct mlxreg_hotplug_priv_data *priv,
 	struct i2c_client *client;
 
 	/* Notify user by sending hwmon uevent. */
-	kobject_uevent(&priv->hwmon->kobj, KOBJ_CHANGE);
+	mlxreg_hotplug_udev_event_send(&priv->hwmon->kobj, data, true);
 
 	/*
 	 * Return if adapter number is negative. It could be in case hotplug
@@ -144,7 +136,7 @@ mlxreg_hotplug_device_destroy(struct mlxreg_hotplug_priv_data *priv,
 			      struct mlxreg_core_data *data)
 {
 	/* Notify user by sending hwmon uevent. */
-	kobject_uevent(&priv->hwmon->kobj, KOBJ_CHANGE);
+	mlxreg_hotplug_udev_event_send(&priv->hwmon->kobj, data, false);
 
 	if (data->hpdev.client) {
 		i2c_unregister_device(data->hpdev.client);
@@ -199,17 +191,49 @@ static int mlxreg_hotplug_attr_init(struct mlxreg_hotplug_priv_data *priv)
 	struct mlxreg_core_hotplug_platform_data *pdata;
 	struct mlxreg_core_item *item;
 	struct mlxreg_core_data *data;
-	int num_attrs = 0, id = 0, i, j;
+	unsigned long mask;
+	u32 regval;
+	int num_attrs = 0, id = 0, i, j, k, ret;
 
 	pdata = dev_get_platdata(&priv->pdev->dev);
 	item = pdata->items;
 
 	/* Go over all kinds of items - psu, pwr, fan. */
 	for (i = 0; i < pdata->counter; i++, item++) {
-		num_attrs += item->count;
+		if (item->capability) {
+			/*
+			 * Read group capability register to get actual number
+			 * of interrupt capable components and set group mask
+			 * accordingly.
+			 */
+			ret = regmap_read(priv->regmap, item->capability,
+					  &regval);
+			if (ret)
+				return ret;
+
+			item->mask = GENMASK((regval & item->mask) - 1, 0);
+		}
+
 		data = item->data;
-		/* Go over all units within the item. */
-		for (j = 0; j < item->count; j++, data++, id++) {
+
+		/* Go over all unmasked units within item. */
+		mask = item->mask;
+		k = 0;
+		for_each_set_bit(j, &mask, item->count) {
+			if (data->capability) {
+				/*
+				 * Read capability register and skip non
+				 * relevant attributes.
+				 */
+				ret = regmap_read(priv->regmap,
+						  data->capability, &regval);
+				if (ret)
+					return ret;
+				if (!(regval & data->bit)) {
+					data++;
+					continue;
+				}
+			}
 			PRIV_ATTR(id) = &PRIV_DEV_ATTR(id).dev_attr.attr;
 			PRIV_ATTR(id)->name = devm_kasprintf(&priv->pdev->dev,
 							     GFP_KERNEL,
@@ -227,9 +251,13 @@ static int mlxreg_hotplug_attr_init(struct mlxreg_hotplug_priv_data *priv)
 			PRIV_DEV_ATTR(id).dev_attr.show =
 						mlxreg_hotplug_attr_show;
 			PRIV_DEV_ATTR(id).nr = i;
-			PRIV_DEV_ATTR(id).index = j;
+			PRIV_DEV_ATTR(id).index = k;
 			sysfs_attr_init(&PRIV_DEV_ATTR(id).dev_attr.attr);
+			data++;
+			id++;
+			k++;
 		}
+		num_attrs += k;
 	}
 
 	priv->group.attrs = devm_kcalloc(&priv->pdev->dev,
@@ -507,20 +535,6 @@ static int mlxreg_hotplug_set_irq(struct mlxreg_hotplug_priv_data *priv)
 	item = pdata->items;
 
 	for (i = 0; i < pdata->counter; i++, item++) {
-		if (item->capability) {
-			/*
-			 * Read group capability register to get actual number
-			 * of interrupt capable components and set group mask
-			 * accordingly.
-			 */
-			ret = regmap_read(priv->regmap, item->capability,
-					  &regval);
-			if (ret)
-				goto out;
-
-			item->mask = GENMASK((regval & item->mask) - 1, 0);
-		}
-
 		/* Clear group presense event. */
 		ret = regmap_write(priv->regmap, item->reg +
 				   MLXREG_HOTPLUG_EVENT_OFF, 0);

drivers/platform/mellanox/mlxreg-io.c

@@ -30,6 +30,7 @@
  * @mlxreg_io_dev_attr: sysfs sensor device attribute array;
  * @group: sysfs attribute group;
  * @groups: list of sysfs attribute group for hwmon registration;
+ * @regsize: size of a register value;
  */
 struct mlxreg_io_priv_data {
 	struct platform_device *pdev;
@@ -39,27 +40,30 @@ struct mlxreg_io_priv_data {
 	struct sensor_device_attribute mlxreg_io_dev_attr[MLXREG_IO_ATT_NUM];
 	struct attribute_group group;
 	const struct attribute_group *groups[2];
+	int regsize;
 };
 
 static int
 mlxreg_io_get_reg(void *regmap, struct mlxreg_core_data *data, u32 in_val,
-		  bool rw_flag, u32 *regval)
+		  bool rw_flag, int regsize, u32 *regval)
 {
-	int ret;
+	int i, val, ret;
 
 	ret = regmap_read(regmap, data->reg, regval);
 	if (ret)
 		goto access_error;
 
 	/*
-	 * There are three kinds of attributes: single bit, full register's
-	 * bits and bit sequence. For the first kind field mask indicates which
-	 * bits are not related and field bit is set zero. For the second kind
-	 * field mask is set to zero and field bit is set with all bits one.
-	 * No special handling for such kind of attributes - pass value as is.
-	 * For the third kind, field mask indicates which bits are related and
-	 * field bit is set to the first bit number (from 1 to 32) is the bit
-	 * sequence.
+	 * There are four kinds of attributes: single bit, full register's
+	 * bits, bit sequence, bits in few registers For the first kind field
+	 * mask indicates which bits are not related and field bit is set zero.
+	 * For the second kind field mask is set to zero and field bit is set
+	 * with all bits one. No special handling for such kind of attributes -
+	 * pass value as is. For the third kind, the field mask indicates which
+	 * bits are related and the field bit is set to the first bit number
+	 * (from 1 to 32) is the bit sequence. For the fourth kind - the number
+	 * of registers which should be read for getting an attribute are
+	 * specified through 'data->regnum' field.
 	 */
 	if (!data->bit) {
 		/* Single bit. */
@@ -83,6 +87,19 @@ mlxreg_io_get_reg(void *regmap, struct mlxreg_core_data *data, u32 in_val,
 			/* Clear relevant bits and set them to new value. */
 			*regval = (*regval & ~data->mask) | in_val;
 		}
+	} else {
+		/*
+		 * Some attributes could occupied few registers in case regmap
+		 * bit size is 8 or 16. Compose such attributes from 'regnum'
+		 * registers. Such attributes contain read-only data.
+		 */
+		for (i = 1; i < data->regnum; i++) {
+			ret = regmap_read(regmap, data->reg + i, &val);
+			if (ret)
+				goto access_error;
+
+			*regval |= rol32(val, regsize * i);
+		}
 	}
 
 access_error:
@@ -99,7 +116,8 @@ mlxreg_io_attr_show(struct device *dev, struct device_attribute *attr,
 	u32 regval = 0;
 	int ret;
 
-	ret = mlxreg_io_get_reg(priv->pdata->regmap, data, 0, true, &regval);
+	ret = mlxreg_io_get_reg(priv->pdata->regmap, data, 0, true,
+				priv->regsize, &regval);
 	if (ret)
 		goto access_error;
 
@@ -128,7 +146,7 @@ mlxreg_io_attr_store(struct device *dev, struct device_attribute *attr,
 		return ret;
 
 	ret = mlxreg_io_get_reg(priv->pdata->regmap, data, input_val, false,
-				&regval);
+				priv->regsize, &regval);
 	if (ret)
 		goto access_error;
 
@@ -207,6 +225,9 @@ static int mlxreg_io_probe(struct platform_device *pdev)
 	}
 
 	priv->pdev = pdev;
+	priv->regsize = regmap_get_val_bytes(priv->pdata->regmap);
+	if (priv->regsize < 0)
+		return priv->regsize;
 
 	err = mlxreg_io_attr_init(priv);
 	if (err) {

drivers/platform/x86/Kconfig

@@ -140,7 +140,7 @@ config ACERHDF
 	  in the same node directory will tell you if it is "acerhdf".
 
 	  For more information about this driver see
-	  <http://piie.net/files/acerhdf_README.txt>
+	  <https://piie.net/files/acerhdf_README.txt>
 
 	  If you have an Acer Aspire One netbook, say Y or M
 	  here.
@@ -748,6 +748,27 @@ config THINKPAD_ACPI_HOTKEY_POLL
 	  If you are not sure, say Y here.  The driver enables polling only if
 	  it is strictly necessary to do so.
 
+config INTEL_ATOMISP2_LED
+	tristate "Intel AtomISP2 camera LED driver"
+	depends on GPIOLIB && LEDS_GPIO
+	help
+	  Many Bay Trail and Cherry Trail devices come with a camera attached
+	  to Intel's Image Signal Processor. Linux currently does not have a
+	  driver for these, so they do not work as a camera. Some of these
+	  camera's have a LED which is controlled through a GPIO.
+
+	  Some of these devices have a firmware issue where the LED gets turned
+	  on at boot. This driver will turn the LED off at boot and also allows
+	  controlling the LED (repurposing it) through the sysfs LED interface.
+
+	  Which GPIO is attached to the LED is usually not described in the
+	  ACPI tables, so this driver contains per-system info about the GPIO
+	  inside the driver, this means that this driver only works on systems
+	  the driver knows about.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called intel_atomisp2_led.
+
 config INTEL_ATOMISP2_PM
 	tristate "Intel AtomISP2 dummy / power-management driver"
 	depends on PCI && IOSF_MBI && PM

drivers/platform/x86/Makefile

@@ -69,6 +69,7 @@ obj-$(CONFIG_SENSORS_HDAPS)	+= hdaps.o
 obj-$(CONFIG_THINKPAD_ACPI)	+= thinkpad_acpi.o
 
 # Intel
+obj-$(CONFIG_INTEL_ATOMISP2_LED)	+= intel_atomisp2_led.o
 obj-$(CONFIG_INTEL_ATOMISP2_PM)		+= intel_atomisp2_pm.o
 obj-$(CONFIG_INTEL_CHT_INT33FE)		+= intel_cht_int33fe.o
 intel_cht_int33fe-objs			:= intel_cht_int33fe_common.o \

drivers/platform/x86/acerhdf.c

@@ -5,7 +5,7 @@
  *           as soon as the upper/lower threshold is reached.
  *
  * (C) 2009 - Peter Kaestle     peter (a) piie.net
- *                              http://piie.net
+ *                              https://piie.net
  *     2009 Borislav Petkov	bp (a) alien8.de
  *
  * Inspired by and many thanks to:

drivers/platform/x86/apple-gmux.c

@@ -277,8 +277,8 @@ static bool gmux_is_indexed(struct apple_gmux_data *gmux_data)
  * MBP5 2008/09 uses a `TI LP8543`_ backlight driver. All newer models
  * use a `TI LP8545`_.
  *
- * .. _TI LP8543: http://www.ti.com/lit/ds/symlink/lp8543.pdf
- * .. _TI LP8545: http://www.ti.com/lit/ds/symlink/lp8545.pdf
+ * .. _TI LP8543: https://www.ti.com/lit/ds/symlink/lp8543.pdf
+ * .. _TI LP8545: https://www.ti.com/lit/ds/symlink/lp8545.pdf
  */
 
 static int gmux_get_brightness(struct backlight_device *bd)
@@ -373,14 +373,14 @@ static const struct backlight_ops gmux_bl_ops = {
  * switch the panel and the external DP connector and allocates a framebuffer
  * for the selected GPU.
  *
- * .. _US 8,687,007 B2: http://pimg-fpiw.uspto.gov/fdd/07/870/086/0.pdf
- * .. _NXP CBTL06141:   http://www.nxp.com/documents/data_sheet/CBTL06141.pdf
- * .. _NXP CBTL06142:   http://www.nxp.com/documents/data_sheet/CBTL06141.pdf
- * .. _TI HD3SS212:     http://www.ti.com/lit/ds/symlink/hd3ss212.pdf
+ * .. _US 8,687,007 B2: https://pimg-fpiw.uspto.gov/fdd/07/870/086/0.pdf
+ * .. _NXP CBTL06141:   https://www.nxp.com/documents/data_sheet/CBTL06141.pdf
+ * .. _NXP CBTL06142:   https://www.nxp.com/documents/data_sheet/CBTL06141.pdf
+ * .. _TI HD3SS212:     https://www.ti.com/lit/ds/symlink/hd3ss212.pdf
  * .. _Pericom PI3VDP12412: https://www.pericom.com/assets/Datasheets/PI3VDP12412.pdf
- * .. _TI SN74LV4066A:  http://www.ti.com/lit/ds/symlink/sn74lv4066a.pdf
+ * .. _TI SN74LV4066A:  https://www.ti.com/lit/ds/symlink/sn74lv4066a.pdf
  * .. _NXP CBTL03062:   http://pdf.datasheetarchive.com/indexerfiles/Datasheets-SW16/DSASW00308511.pdf
- * .. _TI TS3DS10224:   http://www.ti.com/lit/ds/symlink/ts3ds10224.pdf
+ * .. _TI TS3DS10224:   https://www.ti.com/lit/ds/symlink/ts3ds10224.pdf
  */
 
 static void gmux_read_switch_state(struct apple_gmux_data *gmux_data)

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

@@ -110,6 +110,11 @@ static struct quirk_entry quirk_asus_forceals = {
 	.wmi_force_als_set = true,
 };
 
+static struct quirk_entry quirk_asus_vendor_backlight = {
+	.wmi_backlight_power = true,
+	.wmi_backlight_set_devstate = true,
+};
+
 static int dmi_matched(const struct dmi_system_id *dmi)
 {
 	pr_info("Identified laptop model '%s'\n", dmi->ident);
@@ -411,6 +416,78 @@ static const struct dmi_system_id asus_quirks[] = {
 		},
 		.driver_data = &quirk_asus_forceals,
 	},
+	{
+		.callback = dmi_matched,
+		.ident = "ASUSTeK COMPUTER INC. GA401IH",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "GA401IH"),
+		},
+		.driver_data = &quirk_asus_vendor_backlight,
+	},
+	{
+		.callback = dmi_matched,
+		.ident = "ASUSTeK COMPUTER INC. GA401II",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "GA401II"),
+		},
+		.driver_data = &quirk_asus_vendor_backlight,
+	},
+	{
+		.callback = dmi_matched,
+		.ident = "ASUSTeK COMPUTER INC. GA401IU",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "GA401IU"),
+		},
+		.driver_data = &quirk_asus_vendor_backlight,
+	},
+	{
+		.callback = dmi_matched,
+		.ident = "ASUSTeK COMPUTER INC. GA401IV",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "GA401IV"),
+		},
+		.driver_data = &quirk_asus_vendor_backlight,
+	},
+	{
+		.callback = dmi_matched,
+		.ident = "ASUSTeK COMPUTER INC. GA401IVC",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "GA401IVC"),
+		},
+		.driver_data = &quirk_asus_vendor_backlight,
+	},
+		{
+		.callback = dmi_matched,
+		.ident = "ASUSTeK COMPUTER INC. GA502II",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "GA502II"),
+		},
+		.driver_data = &quirk_asus_vendor_backlight,
+	},
+	{
+		.callback = dmi_matched,
+		.ident = "ASUSTeK COMPUTER INC. GA502IU",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "GA502IU"),
+		},
+		.driver_data = &quirk_asus_vendor_backlight,
+	},
+	{
+		.callback = dmi_matched,
+		.ident = "ASUSTeK COMPUTER INC. GA502IV",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "GA502IV"),
+		},
+		.driver_data = &quirk_asus_vendor_backlight,
+	},
 	{},
 };
 

drivers/platform/x86/dell-wmi.c

@@ -255,6 +255,10 @@ static const struct key_entry dell_wmi_keymap_type_0010[] = {
 	/* Keyboard backlight change notification */
 	{ KE_IGNORE, 0x3f, { KEY_RESERVED } },
 
+	/* Backlight brightness level */
+	{ KE_KEY,    0x57, { KEY_BRIGHTNESSDOWN } },
+	{ KE_KEY,    0x58, { KEY_BRIGHTNESSUP } },
+
 	/* Mic mute */
 	{ KE_KEY, 0x150, { KEY_MICMUTE } },
 
@@ -330,6 +334,15 @@ static const struct key_entry dell_wmi_keymap_type_0011[] = {
 	{ KE_IGNORE, KBD_LED_AUTO_100_TOKEN, { KEY_RESERVED } },
 };
 
+/*
+ * Keymap for WMI events of type 0x0012
+ * They are events with extended data
+ */
+static const struct key_entry dell_wmi_keymap_type_0012[] = {
+	/* Fn-lock button pressed */
+	{ KE_IGNORE, 0xe035, { KEY_RESERVED } },
+};
+
 static void dell_wmi_process_key(struct wmi_device *wdev, int type, int code)
 {
 	struct dell_wmi_priv *priv = dev_get_drvdata(&wdev->dev);
@@ -414,10 +427,11 @@ static void dell_wmi_notify(struct wmi_device *wdev,
 
 		switch (buffer_entry[1]) {
 		case 0x0000: /* One key pressed or event occurred */
+		case 0x0012: /* Event with extended data occurred */
 			if (len > 2)
-				dell_wmi_process_key(wdev, 0x0000,
+				dell_wmi_process_key(wdev, buffer_entry[1],
 						     buffer_entry[2]);
-			/* Other entries could contain additional information */
+			/* Extended data is currently ignored */
 			break;
 		case 0x0010: /* Sequence of keys pressed */
 		case 0x0011: /* Sequence of events occurred */
@@ -492,7 +506,7 @@ static void handle_dmi_entry(const struct dmi_header *dm, void *opaque)
 		u16 keycode = (bios_entry->keycode <
 			       ARRAY_SIZE(bios_to_linux_keycode)) ?
 			bios_to_linux_keycode[bios_entry->keycode] :
-			KEY_RESERVED;
+			(bios_entry->keycode == 0xffff ? KEY_UNKNOWN : KEY_RESERVED);
 
 		/*
 		 * Log if we find an entry in the DMI table that we don't
@@ -552,6 +566,7 @@ static int dell_wmi_input_setup(struct wmi_device *wdev)
 			 ARRAY_SIZE(dell_wmi_keymap_type_0000) +
 			 ARRAY_SIZE(dell_wmi_keymap_type_0010) +
 			 ARRAY_SIZE(dell_wmi_keymap_type_0011) +
+			 ARRAY_SIZE(dell_wmi_keymap_type_0012) +
 			 1,
 			 sizeof(struct key_entry), GFP_KERNEL);
 	if (!keymap) {
@@ -596,6 +611,13 @@ static int dell_wmi_input_setup(struct wmi_device *wdev)
 		pos++;
 	}
 
+	/* Append table with events of type 0x0012 */
+	for (i = 0; i < ARRAY_SIZE(dell_wmi_keymap_type_0012); i++) {
+		keymap[pos] = dell_wmi_keymap_type_0012[i];
+		keymap[pos].code |= (0x0012 << 16);
+		pos++;
+	}
+
 	/*
 	 * Now append also table with "legacy" events of type 0x0000. Some of
 	 * them are reported also on laptops which have scancodes in DMI.

drivers/platform/x86/intel-hid.c

@@ -571,7 +571,7 @@ check_acpi_dev(acpi_handle handle, u32 lvl, void *context, void **rv)
 		return AE_OK;
 
 	if (acpi_match_device_ids(dev, ids) == 0)
-		if (acpi_create_platform_device(dev, NULL))
+		if (!IS_ERR_OR_NULL(acpi_create_platform_device(dev, NULL)))
 			dev_info(&dev->dev,
 				 "intel-hid: created platform device\n");
 

drivers/platform/x86/intel-vbtn.c

@@ -299,7 +299,7 @@ check_acpi_dev(acpi_handle handle, u32 lvl, void *context, void **rv)
 		return AE_OK;
 
 	if (acpi_match_device_ids(dev, ids) == 0)
-		if (acpi_create_platform_device(dev, NULL))
+		if (!IS_ERR_OR_NULL(acpi_create_platform_device(dev, NULL)))
 			dev_info(&dev->dev,
 				 "intel-vbtn: created platform device\n");
 

drivers/platform/x86/intel_atomisp2_led.c

+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Driver for controlling LEDs for cameras connected to the Intel atomisp2
+ * The main purpose of this driver is to turn off LEDs which are on at boot.
+ *
+ * Copyright (C) 2020 Hans de Goede <hdegoede@redhat.com>
+ */
+
+#include <linux/dmi.h>
+#include <linux/gpio/consumer.h>
+#include <linux/gpio/machine.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
+#include <linux/workqueue.h>
+
+/* This must be leds-gpio as the leds-gpio driver binds to the name */
+#define DEV_NAME		"leds-gpio"
+
+static const struct gpio_led atomisp2_leds[] = {
+	{
+		.name = "atomisp2::camera",
+		.default_state  = LEDS_GPIO_DEFSTATE_OFF,
+	},
+};
+
+static const struct gpio_led_platform_data atomisp2_leds_pdata = {
+	.num_leds	= ARRAY_SIZE(atomisp2_leds),
+	.leds		= atomisp2_leds,
+};
+
+static struct gpiod_lookup_table asus_t100ta_lookup = {
+	.dev_id = DEV_NAME,
+	.table = {
+		GPIO_LOOKUP_IDX("INT33FC:02", 8, NULL, 0, GPIO_ACTIVE_HIGH),
+		{ }
+	}
+};
+
+static struct gpiod_lookup_table asus_t100chi_lookup = {
+	.dev_id = DEV_NAME,
+	.table = {
+		GPIO_LOOKUP_IDX("INT33FC:01", 24, NULL, 0, GPIO_ACTIVE_HIGH),
+		{ }
+	}
+};
+
+static const struct dmi_system_id atomisp2_led_systems[] __initconst = {
+	{
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100TA"),
+		},
+		.driver_data = &asus_t100ta_lookup,
+	},
+	{
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T200TA"),
+		},
+		.driver_data = &asus_t100ta_lookup,
+	},
+	{
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100CHI"),
+		},
+		.driver_data = &asus_t100chi_lookup,
+	},
+	{} /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(dmi, atomisp2_led_systems);
+
+static struct gpiod_lookup_table *gpio_lookup;
+static struct platform_device *pdev;
+
+static int __init atomisp2_led_init(void)
+{
+	const struct dmi_system_id *system;
+
+	system = dmi_first_match(atomisp2_led_systems);
+	if (!system)
+		return -ENODEV;
+
+	gpio_lookup = system->driver_data;
+	gpiod_add_lookup_table(gpio_lookup);
+
+	pdev = platform_device_register_resndata(NULL,
+						 DEV_NAME, PLATFORM_DEVID_NONE,
+						 NULL, 0, &atomisp2_leds_pdata,
+						 sizeof(atomisp2_leds_pdata));
+	if (IS_ERR(pdev))
+		gpiod_remove_lookup_table(gpio_lookup);
+
+	return PTR_ERR_OR_ZERO(pdev);
+}
+
+static void __exit atomisp2_led_cleanup(void)
+{
+	platform_device_unregister(pdev);
+	gpiod_remove_lookup_table(gpio_lookup);
+}
+
+module_init(atomisp2_led_init);
+module_exit(atomisp2_led_cleanup);
+
+/*
+ * The ACPI INIT method from Asus WMI's code on the T100TA and T200TA turns the
+ * LED on (without the WMI interface allowing further control over the LED).
+ * Ensure we are loaded after asus-nb-wmi so that we turn the LED off again.
+ */
+MODULE_SOFTDEP("pre: asus_nb_wmi");
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com");
+MODULE_DESCRIPTION("Intel atomisp2 camera LED driver");
+MODULE_LICENSE("GPL");

drivers/platform/x86/intel_cht_int33fe_common.c

@@ -29,18 +29,16 @@ static int cht_int33fe_i2c_res_filter(struct acpi_resource *ares, void *data)
 
 static int cht_int33fe_count_i2c_clients(struct device *dev)
 {
-	struct acpi_device *adev;
+	struct acpi_device *adev = ACPI_COMPANION(dev);
 	LIST_HEAD(resource_list);
 	int count = 0;
+	int ret;
 
-	adev = ACPI_COMPANION(dev);
-	if (!adev)
-		return -EINVAL;
-
-	acpi_dev_get_resources(adev, &resource_list,
-			       cht_int33fe_i2c_res_filter, &count);
-
+	ret = acpi_dev_get_resources(adev, &resource_list,
+				     cht_int33fe_i2c_res_filter, &count);
 	acpi_dev_free_resource_list(&resource_list);
+	if (ret < 0)
+		return ret;
 
 	return count;
 }

drivers/platform/x86/intel_pmc_core.c

@@ -415,7 +415,7 @@ static const struct pmc_bit_map tgl_lpm0_map[] = {
 	{"PCIe_Gen3PLL_OFF_STS",		BIT(20)},
 	{"OPIOPLL_OFF_STS",			BIT(21)},
 	{"OCPLL_OFF_STS",			BIT(22)},
-	{"AudioPLL_OFF_STS",			BIT(23)},
+	{"MainPLL_OFF_STS",			BIT(23)},
 	{"MIPIPLL_OFF_STS",			BIT(24)},
 	{"Fast_XTAL_Osc_OFF_STS",		BIT(25)},
 	{"AC_Ring_Osc_OFF_STS",			BIT(26)},
@@ -795,7 +795,7 @@ static int pmc_core_mphy_pg_show(struct seq_file *s, void *unused)
 	msleep(10);
 	val_high = pmc_core_reg_read(pmcdev, SPT_PMC_MFPMC_OFFSET);
 
-	for (index = 0; map[index].name && index < 8; index++) {
+	for (index = 0; index < 8 && map[index].name; index++) {
 		seq_printf(s, "%-32s\tState: %s\n",
 			   map[index].name,
 			   map[index].bit_mask & val_low ? "Not power gated" :

drivers/platform/x86/mlx-platform.c

@@ -26,6 +26,10 @@
 #define MLXPLAT_CPLD_LPC_REG_CPLD2_VER_OFFSET	0x01
 #define MLXPLAT_CPLD_LPC_REG_CPLD3_VER_OFFSET	0x02
 #define MLXPLAT_CPLD_LPC_REG_CPLD4_VER_OFFSET	0x03
+#define MLXPLAT_CPLD_LPC_REG_CPLD1_PN_OFFSET	0x04
+#define MLXPLAT_CPLD_LPC_REG_CPLD2_PN_OFFSET	0x06
+#define MLXPLAT_CPLD_LPC_REG_CPLD3_PN_OFFSET	0x08
+#define MLXPLAT_CPLD_LPC_REG_CPLD4_PN_OFFSET	0x0a
 #define MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET	0x1d
 #define MLXPLAT_CPLD_LPC_REG_RST_CAUSE1_OFFSET	0x1e
 #define MLXPLAT_CPLD_LPC_REG_RST_CAUSE2_OFFSET	0x1f
@@ -72,6 +76,10 @@
 #define MLXPLAT_CPLD_LPC_REG_WD3_TMR_OFFSET	0xd1
 #define MLXPLAT_CPLD_LPC_REG_WD3_TLEFT_OFFSET	0xd2
 #define MLXPLAT_CPLD_LPC_REG_WD3_ACT_OFFSET	0xd3
+#define MLXPLAT_CPLD_LPC_REG_CPLD1_MVER_OFFSET	0xde
+#define MLXPLAT_CPLD_LPC_REG_CPLD2_MVER_OFFSET	0xdf
+#define MLXPLAT_CPLD_LPC_REG_CPLD3_MVER_OFFSET	0xe0
+#define MLXPLAT_CPLD_LPC_REG_CPLD4_MVER_OFFSET	0xe1
 #define MLXPLAT_CPLD_LPC_REG_UFM_VERSION_OFFSET	0xe2
 #define MLXPLAT_CPLD_LPC_REG_PWM1_OFFSET	0xe3
 #define MLXPLAT_CPLD_LPC_REG_TACHO1_OFFSET	0xe4
@@ -1303,6 +1311,32 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_regs_io_data[] = {
 		.bit = GENMASK(7, 0),
 		.mode = 0444,
 	},
+	{
+		.label = "cpld1_pn",
+		.reg = MLXPLAT_CPLD_LPC_REG_CPLD1_PN_OFFSET,
+		.bit = GENMASK(15, 0),
+		.mode = 0444,
+		.regnum = 2,
+	},
+	{
+		.label = "cpld2_pn",
+		.reg = MLXPLAT_CPLD_LPC_REG_CPLD2_PN_OFFSET,
+		.bit = GENMASK(15, 0),
+		.mode = 0444,
+		.regnum = 2,
+	},
+	{
+		.label = "cpld1_version_min",
+		.reg = MLXPLAT_CPLD_LPC_REG_CPLD1_MVER_OFFSET,
+		.bit = GENMASK(7, 0),
+		.mode = 0444,
+	},
+	{
+		.label = "cpld2_version_min",
+		.reg = MLXPLAT_CPLD_LPC_REG_CPLD2_MVER_OFFSET,
+		.bit = GENMASK(7, 0),
+		.mode = 0444,
+	},
 	{
 		.label = "reset_long_pb",
 		.reg = MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET,
@@ -1409,6 +1443,32 @@ static struct mlxreg_core_data mlxplat_mlxcpld_msn21xx_regs_io_data[] = {
 		.bit = GENMASK(7, 0),
 		.mode = 0444,
 	},
+	{
+		.label = "cpld1_pn",
+		.reg = MLXPLAT_CPLD_LPC_REG_CPLD1_PN_OFFSET,
+		.bit = GENMASK(15, 0),
+		.mode = 0444,
+		.regnum = 2,
+	},
+	{
+		.label = "cpld2_pn",
+		.reg = MLXPLAT_CPLD_LPC_REG_CPLD2_PN_OFFSET,
+		.bit = GENMASK(15, 0),
+		.mode = 0444,
+		.regnum = 2,
+	},
+	{
+		.label = "cpld1_version_min",
+		.reg = MLXPLAT_CPLD_LPC_REG_CPLD1_MVER_OFFSET,
+		.bit = GENMASK(7, 0),
+		.mode = 0444,
+	},
+	{
+		.label = "cpld2_version_min",
+		.reg = MLXPLAT_CPLD_LPC_REG_CPLD2_MVER_OFFSET,
+		.bit = GENMASK(7, 0),
+		.mode = 0444,
+	},
 	{
 		.label = "reset_long_pb",
 		.reg = MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET,
@@ -1527,6 +1587,58 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_ng_regs_io_data[] = {
 		.bit = GENMASK(7, 0),
 		.mode = 0444,
 	},
+	{
+		.label = "cpld1_pn",
+		.reg = MLXPLAT_CPLD_LPC_REG_CPLD1_PN_OFFSET,
+		.bit = GENMASK(15, 0),
+		.mode = 0444,
+		.regnum = 2,
+	},
+	{
+		.label = "cpld2_pn",
+		.reg = MLXPLAT_CPLD_LPC_REG_CPLD2_PN_OFFSET,
+		.bit = GENMASK(15, 0),
+		.mode = 0444,
+		.regnum = 2,
+	},
+	{
+		.label = "cpld3_pn",
+		.reg = MLXPLAT_CPLD_LPC_REG_CPLD3_PN_OFFSET,
+		.bit = GENMASK(15, 0),
+		.mode = 0444,
+		.regnum = 2,
+	},
+	{
+		.label = "cpld4_pn",
+		.reg = MLXPLAT_CPLD_LPC_REG_CPLD4_PN_OFFSET,
+		.bit = GENMASK(15, 0),
+		.mode = 0444,
+		.regnum = 2,
+	},
+	{
+		.label = "cpld1_version_min",
+		.reg = MLXPLAT_CPLD_LPC_REG_CPLD1_MVER_OFFSET,
+		.bit = GENMASK(7, 0),
+		.mode = 0444,
+	},
+	{
+		.label = "cpld2_version_min",
+		.reg = MLXPLAT_CPLD_LPC_REG_CPLD2_MVER_OFFSET,
+		.bit = GENMASK(7, 0),
+		.mode = 0444,
+	},
+	{
+		.label = "cpld3_version_min",
+		.reg = MLXPLAT_CPLD_LPC_REG_CPLD3_MVER_OFFSET,
+		.bit = GENMASK(7, 0),
+		.mode = 0444,
+	},
+	{
+		.label = "cpld4_version_min",
+		.reg = MLXPLAT_CPLD_LPC_REG_CPLD4_MVER_OFFSET,
+		.bit = GENMASK(7, 0),
+		.mode = 0444,
+	},
 	{
 		.label = "reset_long_pb",
 		.reg = MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET,
@@ -1728,6 +1840,8 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_fan_data[] = {
 		.mask = GENMASK(7, 0),
 		.capability = MLXPLAT_CPLD_LPC_REG_FAN_CAP1_OFFSET,
 		.bit = BIT(0),
+		.reg_prsnt = MLXPLAT_CPLD_LPC_REG_FAN_OFFSET,
+
 	},
 	{
 		.label = "tacho2",
@@ -1735,6 +1849,7 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_fan_data[] = {
 		.mask = GENMASK(7, 0),
 		.capability = MLXPLAT_CPLD_LPC_REG_FAN_CAP1_OFFSET,
 		.bit = BIT(1),
+		.reg_prsnt = MLXPLAT_CPLD_LPC_REG_FAN_OFFSET,
 	},
 	{
 		.label = "tacho3",
@@ -1742,6 +1857,7 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_fan_data[] = {
 		.mask = GENMASK(7, 0),
 		.capability = MLXPLAT_CPLD_LPC_REG_FAN_CAP1_OFFSET,
 		.bit = BIT(2),
+		.reg_prsnt = MLXPLAT_CPLD_LPC_REG_FAN_OFFSET,
 	},
 	{
 		.label = "tacho4",
@@ -1749,6 +1865,7 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_fan_data[] = {
 		.mask = GENMASK(7, 0),
 		.capability = MLXPLAT_CPLD_LPC_REG_FAN_CAP1_OFFSET,
 		.bit = BIT(3),
+		.reg_prsnt = MLXPLAT_CPLD_LPC_REG_FAN_OFFSET,
 	},
 	{
 		.label = "tacho5",
@@ -1756,6 +1873,7 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_fan_data[] = {
 		.mask = GENMASK(7, 0),
 		.capability = MLXPLAT_CPLD_LPC_REG_FAN_CAP1_OFFSET,
 		.bit = BIT(4),
+		.reg_prsnt = MLXPLAT_CPLD_LPC_REG_FAN_OFFSET,
 	},
 	{
 		.label = "tacho6",
@@ -1763,6 +1881,7 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_fan_data[] = {
 		.mask = GENMASK(7, 0),
 		.capability = MLXPLAT_CPLD_LPC_REG_FAN_CAP1_OFFSET,
 		.bit = BIT(5),
+		.reg_prsnt = MLXPLAT_CPLD_LPC_REG_FAN_OFFSET,
 	},
 	{
 		.label = "tacho7",
@@ -1770,6 +1889,7 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_fan_data[] = {
 		.mask = GENMASK(7, 0),
 		.capability = MLXPLAT_CPLD_LPC_REG_FAN_CAP1_OFFSET,
 		.bit = BIT(6),
+		.reg_prsnt = MLXPLAT_CPLD_LPC_REG_FAN_OFFSET,
 	},
 	{
 		.label = "tacho8",
@@ -1777,6 +1897,7 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_fan_data[] = {
 		.mask = GENMASK(7, 0),
 		.capability = MLXPLAT_CPLD_LPC_REG_FAN_CAP1_OFFSET,
 		.bit = BIT(7),
+		.reg_prsnt = MLXPLAT_CPLD_LPC_REG_FAN_OFFSET,
 	},
 	{
 		.label = "tacho9",
@@ -1784,6 +1905,7 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_fan_data[] = {
 		.mask = GENMASK(7, 0),
 		.capability = MLXPLAT_CPLD_LPC_REG_FAN_CAP2_OFFSET,
 		.bit = BIT(0),
+		.reg_prsnt = MLXPLAT_CPLD_LPC_REG_FAN_OFFSET,
 	},
 	{
 		.label = "tacho10",
@@ -1791,6 +1913,7 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_fan_data[] = {
 		.mask = GENMASK(7, 0),
 		.capability = MLXPLAT_CPLD_LPC_REG_FAN_CAP2_OFFSET,
 		.bit = BIT(1),
+		.reg_prsnt = MLXPLAT_CPLD_LPC_REG_FAN_OFFSET,
 	},
 	{
 		.label = "tacho11",
@@ -1798,6 +1921,7 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_fan_data[] = {
 		.mask = GENMASK(7, 0),
 		.capability = MLXPLAT_CPLD_LPC_REG_FAN_CAP2_OFFSET,
 		.bit = BIT(2),
+		.reg_prsnt = MLXPLAT_CPLD_LPC_REG_FAN_OFFSET,
 	},
 	{
 		.label = "tacho12",
@@ -1805,6 +1929,7 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_fan_data[] = {
 		.mask = GENMASK(7, 0),
 		.capability = MLXPLAT_CPLD_LPC_REG_FAN_CAP2_OFFSET,
 		.bit = BIT(3),
+		.reg_prsnt = MLXPLAT_CPLD_LPC_REG_FAN_OFFSET,
 	},
 	{
 		.label = "conf",
@@ -2006,6 +2131,10 @@ static bool mlxplat_mlxcpld_readable_reg(struct device *dev, unsigned int reg)
 	case MLXPLAT_CPLD_LPC_REG_CPLD2_VER_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_CPLD3_VER_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_CPLD4_VER_OFFSET:
+	case MLXPLAT_CPLD_LPC_REG_CPLD1_PN_OFFSET:
+	case MLXPLAT_CPLD_LPC_REG_CPLD2_PN_OFFSET:
+	case MLXPLAT_CPLD_LPC_REG_CPLD3_PN_OFFSET:
+	case MLXPLAT_CPLD_LPC_REG_CPLD4_PN_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_RST_CAUSE1_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_RST_CAUSE2_OFFSET:
@@ -2051,6 +2180,10 @@ static bool mlxplat_mlxcpld_readable_reg(struct device *dev, unsigned int reg)
 	case MLXPLAT_CPLD_LPC_REG_WD3_TMR_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_WD3_TLEFT_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_WD3_ACT_OFFSET:
+	case MLXPLAT_CPLD_LPC_REG_CPLD1_MVER_OFFSET:
+	case MLXPLAT_CPLD_LPC_REG_CPLD2_MVER_OFFSET:
+	case MLXPLAT_CPLD_LPC_REG_CPLD3_MVER_OFFSET:
+	case MLXPLAT_CPLD_LPC_REG_CPLD4_MVER_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_PWM1_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_TACHO1_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_TACHO2_OFFSET:
@@ -2085,6 +2218,10 @@ static bool mlxplat_mlxcpld_volatile_reg(struct device *dev, unsigned int reg)
 	case MLXPLAT_CPLD_LPC_REG_CPLD2_VER_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_CPLD3_VER_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_CPLD4_VER_OFFSET:
+	case MLXPLAT_CPLD_LPC_REG_CPLD1_PN_OFFSET:
+	case MLXPLAT_CPLD_LPC_REG_CPLD2_PN_OFFSET:
+	case MLXPLAT_CPLD_LPC_REG_CPLD3_PN_OFFSET:
+	case MLXPLAT_CPLD_LPC_REG_CPLD4_PN_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_RST_CAUSE1_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_RST_CAUSE2_OFFSET:
@@ -2122,6 +2259,10 @@ static bool mlxplat_mlxcpld_volatile_reg(struct device *dev, unsigned int reg)
 	case MLXPLAT_CPLD_LPC_REG_WD2_TLEFT_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_WD3_TMR_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_WD3_TLEFT_OFFSET:
+	case MLXPLAT_CPLD_LPC_REG_CPLD1_MVER_OFFSET:
+	case MLXPLAT_CPLD_LPC_REG_CPLD2_MVER_OFFSET:
+	case MLXPLAT_CPLD_LPC_REG_CPLD3_MVER_OFFSET:
+	case MLXPLAT_CPLD_LPC_REG_CPLD4_MVER_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_PWM1_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_TACHO1_OFFSET:
 	case MLXPLAT_CPLD_LPC_REG_TACHO2_OFFSET:

drivers/platform/x86/pcengines-apuv2.c

@@ -78,7 +78,6 @@ static const struct gpio_led apu2_leds[] = {
 	{ .name = "apu:green:1" },
 	{ .name = "apu:green:2" },
 	{ .name = "apu:green:3" },
-	{ .name = "apu:simswap" },
 };
 
 static const struct gpio_led_platform_data apu2_leds_pdata = {
@@ -95,8 +94,6 @@ static struct gpiod_lookup_table gpios_led_table = {
 				NULL, 1, GPIO_ACTIVE_LOW),
 		GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_LED3,
 				NULL, 2, GPIO_ACTIVE_LOW),
-		GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_SIMSWAP,
-				NULL, 3, GPIO_ACTIVE_LOW),
 	}
 };
 

drivers/platform/x86/system76_acpi.c

@@ -103,12 +103,12 @@ static enum led_brightness ap_led_get(struct led_classdev *led)
 }
 
 // Set the airplane mode LED brightness
-static void ap_led_set(struct led_classdev *led, enum led_brightness value)
+static int ap_led_set(struct led_classdev *led, enum led_brightness value)
 {
 	struct system76_data *data;
 
 	data = container_of(led, struct system76_data, ap_led);
-	system76_set(data, "SAPL", value == LED_OFF ? 0 : 1);
+	return system76_set(data, "SAPL", value == LED_OFF ? 0 : 1);
 }
 
 // Get the last set keyboard LED brightness
@@ -121,13 +121,13 @@ static enum led_brightness kb_led_get(struct led_classdev *led)
 }
 
 // Set the keyboard LED brightness
-static void kb_led_set(struct led_classdev *led, enum led_brightness value)
+static int kb_led_set(struct led_classdev *led, enum led_brightness value)
 {
 	struct system76_data *data;
 
 	data = container_of(led, struct system76_data, kb_led);
 	data->kb_brightness = value;
-	system76_set(data, "SKBL", (int)data->kb_brightness);
+	return system76_set(data, "SKBL", (int)data->kb_brightness);
 }
 
 // Get the last set keyboard LED color
@@ -313,7 +313,7 @@ static int system76_add(struct acpi_device *acpi_dev)
 	data->ap_led.name = "system76_acpi::airplane";
 	data->ap_led.flags = LED_CORE_SUSPENDRESUME;
 	data->ap_led.brightness_get = ap_led_get;
-	data->ap_led.brightness_set = ap_led_set;
+	data->ap_led.brightness_set_blocking = ap_led_set;
 	data->ap_led.max_brightness = 1;
 	data->ap_led.default_trigger = "rfkill-none";
 	err = devm_led_classdev_register(&acpi_dev->dev, &data->ap_led);
@@ -323,7 +323,7 @@ static int system76_add(struct acpi_device *acpi_dev)
 	data->kb_led.name = "system76_acpi::kbd_backlight";
 	data->kb_led.flags = LED_BRIGHT_HW_CHANGED | LED_CORE_SUSPENDRESUME;
 	data->kb_led.brightness_get = kb_led_get;
-	data->kb_led.brightness_set = kb_led_set;
+	data->kb_led.brightness_set_blocking = kb_led_set;
 	if (acpi_has_method(acpi_device_handle(data->acpi_dev), "SKBC")) {
 		data->kb_led.max_brightness = 255;
 		data->kb_toggle_brightness = 72;

drivers/platform/x86/thinkpad_acpi.c

@@ -4030,8 +4030,8 @@ static bool hotkey_notify_6xxx(const u32 hkey,
 		return true;
 	case TP_HKEY_EV_THM_CSM_COMPLETED:
 		pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n");
-		/* recommended action: do nothing, we don't have
-		 * Lenovo ATM information */
+		/* Thermal event - pass on to event handler */
+		tpacpi_driver_event(hkey);
 		return true;
 	case TP_HKEY_EV_THM_TRANSFM_CHANGED:
 		pr_debug("EC reports: Thermal Transformation changed (GMTS)\n");
@@ -6963,10 +6963,13 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
 			pr_warn("Cannot enable backlight brightness support, ACPI is already handling it.  Refer to the acpi_backlight kernel parameter.\n");
 			return 1;
 		}
-	} else if (tp_features.bright_acpimode && brightness_enable > 1) {
-		pr_notice("Standard ACPI backlight interface not available, thinkpad_acpi native brightness control enabled\n");
+	} else if (!tp_features.bright_acpimode) {
+		pr_notice("ACPI backlight interface not available\n");
+		return 1;
 	}
 
+	pr_notice("ACPI native brightness control enabled\n");
+
 	/*
 	 * Check for module parameter bogosity, note that we
 	 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
@@ -7965,7 +7968,7 @@ static struct ibm_struct volume_driver_data = {
  *	does so, its initial value is meaningless (0x07).
  *
  *	For firmware bugs, refer to:
- *	http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
+ *	https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
  *
  * 	----
  *
@@ -7990,7 +7993,7 @@ static struct ibm_struct volume_driver_data = {
  *	mode.
  *
  *	For firmware bugs, refer to:
- *	http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
+ *	https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
  *
  *	----
  *
@@ -9315,9 +9318,6 @@ static struct ibm_struct mute_led_driver_data = {
 #define GET_STOP	"BCSG"
 #define SET_STOP	"BCSS"
 
-#define START_ATTR "charge_start_threshold"
-#define STOP_ATTR  "charge_stop_threshold"
-
 enum {
 	BAT_ANY = 0,
 	BAT_PRIMARY = 1,
@@ -9603,38 +9603,52 @@ static ssize_t tpacpi_battery_show(int what,
 	return sprintf(buf, "%d\n", ret);
 }
 
-static ssize_t charge_start_threshold_show(struct device *device,
+static ssize_t charge_control_start_threshold_show(struct device *device,
 				struct device_attribute *attr,
 				char *buf)
 {
 	return tpacpi_battery_show(THRESHOLD_START, device, buf);
 }
 
-static ssize_t charge_stop_threshold_show(struct device *device,
+static ssize_t charge_control_end_threshold_show(struct device *device,
 				struct device_attribute *attr,
 				char *buf)
 {
 	return tpacpi_battery_show(THRESHOLD_STOP, device, buf);
 }
 
-static ssize_t charge_start_threshold_store(struct device *dev,
+static ssize_t charge_control_start_threshold_store(struct device *dev,
 				struct device_attribute *attr,
 				const char *buf, size_t count)
 {
 	return tpacpi_battery_store(THRESHOLD_START, dev, buf, count);
 }
 
-static ssize_t charge_stop_threshold_store(struct device *dev,
+static ssize_t charge_control_end_threshold_store(struct device *dev,
 				struct device_attribute *attr,
 				const char *buf, size_t count)
 {
 	return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count);
 }
 
-static DEVICE_ATTR_RW(charge_start_threshold);
-static DEVICE_ATTR_RW(charge_stop_threshold);
+static DEVICE_ATTR_RW(charge_control_start_threshold);
+static DEVICE_ATTR_RW(charge_control_end_threshold);
+static struct device_attribute dev_attr_charge_start_threshold = __ATTR(
+	charge_start_threshold,
+	0644,
+	charge_control_start_threshold_show,
+	charge_control_start_threshold_store
+);
+static struct device_attribute dev_attr_charge_stop_threshold = __ATTR(
+	charge_stop_threshold,
+	0644,
+	charge_control_end_threshold_show,
+	charge_control_end_threshold_store
+);
 
 static struct attribute *tpacpi_battery_attrs[] = {
+	&dev_attr_charge_control_start_threshold.attr,
+	&dev_attr_charge_control_end_threshold.attr,
 	&dev_attr_charge_start_threshold.attr,
 	&dev_attr_charge_stop_threshold.attr,
 	NULL,
@@ -9803,6 +9817,105 @@ static struct ibm_struct lcdshadow_driver_data = {
 	.write = lcdshadow_write,
 };
 
+/*************************************************************************
+ * DYTC subdriver, for the Lenovo lapmode feature
+ */
+
+#define DYTC_CMD_GET          2 /* To get current IC function and mode */
+#define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */
+
+static bool dytc_lapmode;
+
+static void dytc_lapmode_notify_change(void)
+{
+	sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode");
+}
+
+static int dytc_command(int command, int *output)
+{
+	acpi_handle dytc_handle;
+
+	if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) {
+		/* Platform doesn't support DYTC */
+		return -ENODEV;
+	}
+	if (!acpi_evalf(dytc_handle, output, NULL, "dd", command))
+		return -EIO;
+	return 0;
+}
+
+static int dytc_lapmode_get(bool *state)
+{
+	int output, err;
+
+	err = dytc_command(DYTC_CMD_GET, &output);
+	if (err)
+		return err;
+	*state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false;
+	return 0;
+}
+
+static void dytc_lapmode_refresh(void)
+{
+	bool new_state;
+	int err;
+
+	err = dytc_lapmode_get(&new_state);
+	if (err || (new_state == dytc_lapmode))
+		return;
+
+	dytc_lapmode = new_state;
+	dytc_lapmode_notify_change();
+}
+
+/* sysfs lapmode entry */
+static ssize_t dytc_lapmode_show(struct device *dev,
+					struct device_attribute *attr,
+					char *buf)
+{
+	return snprintf(buf, PAGE_SIZE, "%d\n", dytc_lapmode);
+}
+
+static DEVICE_ATTR_RO(dytc_lapmode);
+
+static struct attribute *dytc_attributes[] = {
+	&dev_attr_dytc_lapmode.attr,
+	NULL,
+};
+
+static const struct attribute_group dytc_attr_group = {
+	.attrs = dytc_attributes,
+};
+
+static int tpacpi_dytc_init(struct ibm_init_struct *iibm)
+{
+	int err;
+
+	err = dytc_lapmode_get(&dytc_lapmode);
+	/* If support isn't available (ENODEV) then don't return an error
+	 * but just don't create the sysfs group
+	 */
+	if (err == -ENODEV)
+		return 0;
+	/* For all other errors we can flag the failure */
+	if (err)
+		return err;
+
+	/* Platform supports this feature - create the group */
+	err = sysfs_create_group(&tpacpi_pdev->dev.kobj, &dytc_attr_group);
+	return err;
+}
+
+static void dytc_exit(void)
+{
+	sysfs_remove_group(&tpacpi_pdev->dev.kobj, &dytc_attr_group);
+}
+
+static struct ibm_struct dytc_driver_data = {
+	.name = "dytc",
+	.exit = dytc_exit,
+};
+
 /****************************************************************************
  ****************************************************************************
  *
@@ -9850,6 +9963,10 @@ static void tpacpi_driver_event(const unsigned int hkey_event)
 
 		mutex_unlock(&kbdlight_mutex);
 	}
+
+	if (hkey_event == TP_HKEY_EV_THM_CSM_COMPLETED)
+		dytc_lapmode_refresh();
+
 }
 
 static void hotkey_driver_event(const unsigned int scancode)
@@ -10102,7 +10219,7 @@ static int __must_check __init get_thinkpad_model_data(
 	 * X32 or newer, all Z series;  Some models must have an
 	 * up-to-date BIOS or they will not be detected.
 	 *
-	 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
+	 * See https://thinkwiki.org/wiki/List_of_DMI_IDs
 	 */
 	while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
 		if (sscanf(dev->name,
@@ -10288,6 +10405,10 @@ static struct ibm_init_struct ibms_init[] __initdata = {
 		.init = tpacpi_lcdshadow_init,
 		.data = &lcdshadow_driver_data,
 	},
+	{
+		.init = tpacpi_dytc_init,
+		.data = &dytc_driver_data,
+	},
 };
 
 static int __init set_ibm_param(const char *val, const struct kernel_param *kp)
@@ -10621,8 +10742,8 @@ MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
 /*
  * DMI matching for module autoloading
  *
- * See http://thinkwiki.org/wiki/List_of_DMI_IDs
- * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
+ * See https://thinkwiki.org/wiki/List_of_DMI_IDs
+ * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
  *
  * Only models listed in thinkwiki will be supported, so add yours
  * if it is not there yet.

include/linux/platform_data/mlxreg.h

@@ -75,11 +75,13 @@ struct mlxreg_hotplug_device {
  * @mask: attribute access mask;
  * @bit: attribute effective bit;
  * @capability: attribute capability register;
+ * @reg_prsnt: attribute presence register;
  * @mode: access mode;
  * @np - pointer to node platform associated with attribute;
  * @hpdev - hotplug device data;
  * @health_cntr: dynamic device health indication counter;
  * @attached: true if device has been attached after good health indication;
+ * @regnum: number of registers occupied by multi-register attribute;
  */
 struct mlxreg_core_data {
 	char label[MLXREG_CORE_LABEL_MAX_SIZE];
@@ -87,11 +89,13 @@ struct mlxreg_core_data {
 	u32 mask;
 	u32 bit;
 	u32 capability;
+	u32 reg_prsnt;
 	umode_t	mode;
 	struct device_node *np;
 	struct mlxreg_hotplug_device hpdev;
 	u8 health_cntr;
 	bool attached;
+	u8 regnum;
 };
 
 /**

include/linux/string_helpers.h

@@ -2,6 +2,7 @@
 #ifndef _LINUX_STRING_HELPERS_H_
 #define _LINUX_STRING_HELPERS_H_
 
+#include <linux/ctype.h>
 #include <linux/types.h>
 
 struct file;
@@ -75,6 +76,20 @@ static inline int string_escape_str_any_np(const char *src, char *dst,
 	return string_escape_str(src, dst, sz, ESCAPE_ANY_NP, only);
 }
 
+static inline void string_upper(char *dst, const char *src)
+{
+	do {
+		*dst++ = toupper(*src);
+	} while (*src++);
+}
+
+static inline void string_lower(char *dst, const char *src)
+{
+	do {
+		*dst++ = tolower(*src);
+	} while (*src++);
+}
+
 char *kstrdup_quotable(const char *src, gfp_t gfp);
 char *kstrdup_quotable_cmdline(struct task_struct *task, gfp_t gfp);
 char *kstrdup_quotable_file(struct file *file, gfp_t gfp);

include/uapi/linux/isst_if.h

@@ -69,7 +69,7 @@ struct isst_if_cpu_maps {
  * @logical_cpu:	Logical CPU number to get target PCI device.
  * @reg:		PUNIT register offset
  * @value:		For write operation value to write and for
- *			for read placeholder read value
+ *			read placeholder read value
  *
  * Structure to specify read/write data to PUNIT registers.
  */

lib/test-string_helpers.c

@@ -238,6 +238,28 @@ static const struct test_string_2 escape1[] __initconst = {{
 	/* terminator */
 }};
 
+static const struct test_string strings_upper[] __initconst = {
+	{
+		.in = "abcdefgh1234567890test",
+		.out = "ABCDEFGH1234567890TEST",
+	},
+	{
+		.in = "abCdeFgH1234567890TesT",
+		.out = "ABCDEFGH1234567890TEST",
+	},
+};
+
+static const struct test_string strings_lower[] __initconst = {
+	{
+		.in = "ABCDEFGH1234567890TEST",
+		.out = "abcdefgh1234567890test",
+	},
+	{
+		.in = "abCdeFgH1234567890TesT",
+		.out = "abcdefgh1234567890test",
+	},
+};
+
 static __init const char *test_string_find_match(const struct test_string_2 *s2,
 						 unsigned int flags)
 {
@@ -390,6 +412,48 @@ static __init void test_string_get_size(void)
 	test_string_get_size_one(4096, U64_MAX, "75.6 ZB", "64.0 ZiB");
 }
 
+static void __init test_string_upper_lower(void)
+{
+	char *dst;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(strings_upper); i++) {
+		const char *s = strings_upper[i].in;
+		int len = strlen(strings_upper[i].in) + 1;
+
+		dst = kmalloc(len, GFP_KERNEL);
+		if (!dst)
+			return;
+
+		string_upper(dst, s);
+		if (memcmp(dst, strings_upper[i].out, len)) {
+			pr_warn("Test 'string_upper' failed : expected %s, got %s!\n",
+				strings_upper[i].out, dst);
+			kfree(dst);
+			return;
+		}
+		kfree(dst);
+	}
+
+	for (i = 0; i < ARRAY_SIZE(strings_lower); i++) {
+		const char *s = strings_lower[i].in;
+		int len = strlen(strings_lower[i].in) + 1;
+
+		dst = kmalloc(len, GFP_KERNEL);
+		if (!dst)
+			return;
+
+		string_lower(dst, s);
+		if (memcmp(dst, strings_lower[i].out, len)) {
+			pr_warn("Test 'string_lower failed : : expected %s, got %s!\n",
+				strings_lower[i].out, dst);
+			kfree(dst);
+			return;
+		}
+		kfree(dst);
+	}
+}
+
 static int __init test_string_helpers_init(void)
 {
 	unsigned int i;
@@ -411,6 +475,9 @@ static int __init test_string_helpers_init(void)
 	/* Test string_get_size() */
 	test_string_get_size();
 
+	/* Test string upper(), string_lower() */
+	test_string_upper_lower();
+
 	return -EINVAL;
 }
 module_init(test_string_helpers_init);

tools/power/x86/intel-speed-select/isst-config.c

@@ -15,7 +15,7 @@ struct process_cmd_struct {
 	int arg;
 };
 
-static const char *version_str = "v1.4";
+static const char *version_str = "v1.5";
 static const int supported_api_ver = 1;
 static struct isst_if_platform_info isst_platform_info;
 static char *progname;
@@ -44,6 +44,9 @@ static int force_online_offline;
 static int auto_mode;
 static int fact_enable_fail;
 
+static int mbox_delay;
+static int mbox_retries = 3;
+
 /* clos related */
 static int current_clos = -1;
 static int clos_epp = -1;
@@ -198,7 +201,7 @@ int out_format_is_json(void)
 
 static int get_stored_topology_info(int cpu, int *core_id, int *pkg_id, int *die_id)
 {
-	const char *pathname = "/tmp/isst_cpu_topology.dat";
+	const char *pathname = "/var/run/isst_cpu_topology.dat";
 	struct cpu_topology cpu_top;
 	FILE *fp;
 	int ret;
@@ -230,7 +233,7 @@ static int get_stored_topology_info(int cpu, int *core_id, int *pkg_id, int *die
 
 static void store_cpu_topology(void)
 {
-	const char *pathname = "/tmp/isst_cpu_topology.dat";
+	const char *pathname = "/var/run/isst_cpu_topology.dat";
 	FILE *fp;
 	int i;
 
@@ -247,6 +250,8 @@ static void store_cpu_topology(void)
 		return;
 	}
 
+	fprintf(stderr, "Caching topology information\n");
+
 	for (i = 0; i < topo_max_cpus; ++i) {
 		struct cpu_topology cpu_top;
 
@@ -734,7 +739,7 @@ int isst_send_mbox_command(unsigned int cpu, unsigned char command,
 			   unsigned int req_data, unsigned int *resp)
 {
 	const char *pathname = "/dev/isst_interface";
-	int fd;
+	int fd, retry;
 	struct isst_if_mbox_cmds mbox_cmds = { 0 };
 
 	debug_printf(
@@ -786,29 +791,42 @@ int isst_send_mbox_command(unsigned int cpu, unsigned char command,
 	mbox_cmds.mbox_cmd[0].parameter = parameter;
 	mbox_cmds.mbox_cmd[0].req_data = req_data;
 
+	if (mbox_delay)
+		usleep(mbox_delay * 1000);
+
 	fd = open(pathname, O_RDWR);
 	if (fd < 0)
 		err(-1, "%s open failed", pathname);
 
-	if (ioctl(fd, ISST_IF_MBOX_COMMAND, &mbox_cmds) == -1) {
-		if (errno == ENOTTY) {
-			perror("ISST_IF_MBOX_COMMAND\n");
-			fprintf(stderr, "Check presence of kernel modules: isst_if_mbox_pci or isst_if_mbox_msr\n");
-			exit(0);
+	retry = mbox_retries;
+
+	do {
+		if (ioctl(fd, ISST_IF_MBOX_COMMAND, &mbox_cmds) == -1) {
+			if (errno == ENOTTY) {
+				perror("ISST_IF_MBOX_COMMAND\n");
+				fprintf(stderr, "Check presence of kernel modules: isst_if_mbox_pci or isst_if_mbox_msr\n");
+				exit(0);
+			}
+			debug_printf(
+				"Error: mbox_cmd cpu:%d command:%x sub_command:%x parameter:%x req_data:%x errorno:%d\n",
+				cpu, command, sub_command, parameter, req_data, errno);
+			--retry;
+		} else {
+			*resp = mbox_cmds.mbox_cmd[0].resp_data;
+			debug_printf(
+				"mbox_cmd response: cpu:%d command:%x sub_command:%x parameter:%x req_data:%x resp:%x\n",
+				cpu, command, sub_command, parameter, req_data, *resp);
+			break;
 		}
-		debug_printf(
-			"Error: mbox_cmd cpu:%d command:%x sub_command:%x parameter:%x req_data:%x errorno:%d\n",
-			cpu, command, sub_command, parameter, req_data, errno);
-		return -1;
-	} else {
-		*resp = mbox_cmds.mbox_cmd[0].resp_data;
-		debug_printf(
-			"mbox_cmd response: cpu:%d command:%x sub_command:%x parameter:%x req_data:%x resp:%x\n",
-			cpu, command, sub_command, parameter, req_data, *resp);
-	}
+	} while (retry);
 
 	close(fd);
 
+	if (!retry) {
+		debug_printf("Failed mbox command even after retries\n");
+		return -1;
+
+	}
 	return 0;
 }
 
@@ -1245,7 +1263,11 @@ static void set_tdp_level_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
 			fprintf(stderr, "Option is set to online/offline\n");
 			ctdp_level.core_cpumask_size =
 				alloc_cpu_set(&ctdp_level.core_cpumask);
-			isst_get_coremask_info(cpu, tdp_level, &ctdp_level);
+			ret = isst_get_coremask_info(cpu, tdp_level, &ctdp_level);
+			if (ret) {
+				isst_display_error_info_message(1, "Can't get coremask, online/offline option is ignored", 0, 0);
+				return;
+			}
 			if (ctdp_level.cpu_count) {
 				int i, max_cpus = get_topo_max_cpus();
 				for (i = 0; i < max_cpus; ++i) {
@@ -2593,6 +2615,8 @@ static void usage(void)
 	printf("\t[-i|--info] : Print platform information\n");
 	printf("\t[-o|--out] : Output file\n");
 	printf("\t\t\tDefault : stderr\n");
+	printf("\t[-p|--pause] : Delay between two mail box commands in milliseconds\n");
+	printf("\t[-r|--retry] : Retry count for mail box commands on failure, default 3\n");
 	printf("\t[-v|--version] : Print version\n");
 
 	printf("\nResult format\n");
@@ -2624,6 +2648,7 @@ static void print_version(void)
 static void cmdline(int argc, char **argv)
 {
 	const char *pathname = "/dev/isst_interface";
+	char *ptr;
 	FILE *fp;
 	int opt;
 	int option_index = 0;
@@ -2635,7 +2660,9 @@ static void cmdline(int argc, char **argv)
 		{ "format", required_argument, 0, 'f' },
 		{ "help", no_argument, 0, 'h' },
 		{ "info", no_argument, 0, 'i' },
+		{ "pause", required_argument, 0, 'p' },
 		{ "out", required_argument, 0, 'o' },
+		{ "retry", required_argument, 0, 'r' },
 		{ "version", no_argument, 0, 'v' },
 		{ 0, 0, 0, 0 }
 	};
@@ -2688,6 +2715,20 @@ static void cmdline(int argc, char **argv)
 				fclose(outf);
 			outf = fopen_or_exit(optarg, "w");
 			break;
+		case 'p':
+			ret = strtol(optarg, &ptr, 10);
+			if (!ret)
+				fprintf(stderr, "Invalid pause interval, ignore\n");
+			else
+				mbox_delay = ret;
+			break;
+		case 'r':
+			ret = strtol(optarg, &ptr, 10);
+			if (!ret)
+				fprintf(stderr, "Invalid retry count, ignore\n");
+			else
+				mbox_retries = ret;
+			break;
 		case 'v':
 			print_version();
 			break;