Merge tag 'platform-drivers-x86-v5.8-1' of git://git.infradead.org/linux-platform-drivers-x86

Pull x86 platform driver updates from Andy Shevchenko:

 - Add a support of the media keys on the ASUS laptop UX325JA/UX425JA

 - ASUS WMI driver can now handle 2-in-1 models T100TA, T100CHI, T100HA,
   T200TA

 - Big refactoring of Intel SCU driver with Elkhart Lake support has
   been added

 - Slim Bootloarder firmware update signaling WMI driver has been added

 - Thinkpad ACPI driver can handle dual fan configuration on new P and X
   models

 - Touchscreen DMI driver has been extended to support
    - MP-man MPWIN895CL tablet
    - ONDA V891 v5 tablet
    - techBite Arc 11.6
    - Trekstor Twin 10.1
    - Trekstor Yourbook C11B
    - Vinga J116

 - Virtual Button driver got a few fixes to detect mode of 2-in-1 tablet
   models

 - Intel Speed Select tools update

 - Plenty of small cleanups here and there

* tag 'platform-drivers-x86-v5.8-1' of git://git.infradead.org/linux-platform-drivers-x86: (89 commits)
  platform/x86: dcdbas: Check SMBIOS for protected buffer address
  platform/x86: asus_wmi: Reserve more space for struct bias_args
  platform/x86: intel-vbtn: Only blacklist SW_TABLET_MODE on the 9 / "Laptop" chasis-type
  platform/x86: intel-hid: Add a quirk to support HP Spectre X2 (2015)
  platform/x86: touchscreen_dmi: Update Trekstor Twin 10.1 entry
  platform/x86: touchscreen_dmi: Add info for the Trekstor Yourbook C11B
  platform/x86: hp-wmi: Introduce HPWMI_POWER_FW_OR_HW as convenient shortcut
  platform/x86: hp-wmi: Convert simple_strtoul() to kstrtou32()
  platform/x86: hp-wmi: Refactor postcode_store() to follow standard patterns
  platform/x86: acerhdf: replace space by * in modalias
  platform/x86: ISST: Increase timeout
  tools/power/x86/intel-speed-select: Fix invalid core mask
  tools/power/x86/intel-speed-select: Increase CPU count
  tools/power/x86/intel-speed-select: Fix json perf-profile output output
  platform/x86: dell-wmi: Ignore keyboard attached / detached events
  platform/x86: dell-laptop: don't register micmute LED if there is no token
  platform/x86: thinkpad_acpi: Replace custom approach by kstrtoint()
  platform/x86: thinkpad_acpi: Use strndup_user() in dispatch_proc_write()
  platform/x86: thinkpad_acpi: Replace next_cmd(&buf) with strsep(&buf, ",")
  platform/x86: intel-vbtn: Detect switch position before registering the input-device
  ...

32 files changed, 1326 insertions, 1508 deletions

diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 0ad7ad8cf8e1..fb739b242796 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -78,6 +78,16 @@ config HUAWEI_WMI
 	  To compile this driver as a module, choose M here: the module
 	  will be called huawei-wmi.
 
+config INTEL_WMI_SBL_FW_UPDATE
+	tristate "Intel WMI Slim Bootloader firmware update signaling driver"
+	depends on ACPI_WMI
+	help
+	  Say Y here if you want to be able to use the WMI interface to signal
+	  Slim Bootloader to trigger update on next reboot.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called intel-wmi-sbl-fw-update.
+
 config INTEL_WMI_THUNDERBOLT
 	tristate "Intel WMI thunderbolt force power driver"
 	depends on ACPI_WMI
@@ -1269,7 +1279,8 @@ config INTEL_UNCORE_FREQ_CONTROL
 config INTEL_BXTWC_PMIC_TMU
 	tristate "Intel BXT Whiskey Cove TMU Driver"
 	depends on REGMAP
-	depends on INTEL_SOC_PMIC_BXTWC && INTEL_PMC_IPC
+	depends on MFD_INTEL_PMC_BXT
+	depends on INTEL_SOC_PMIC_BXTWC
 	---help---
 	  Select this driver to use Intel BXT Whiskey Cove PMIC TMU feature.
 	  This driver enables the alarm wakeup functionality in the TMU unit
@@ -1295,7 +1306,7 @@ config INTEL_MFLD_THERMAL
 
 config INTEL_MID_POWER_BUTTON
 	tristate "power button driver for Intel MID platforms"
-	depends on INTEL_SCU_IPC && INPUT
+	depends on INTEL_SCU && INPUT
 	help
 	  This driver handles the power button on the Intel MID platforms.
 
@@ -1327,14 +1338,6 @@ config INTEL_PMC_CORE
 		- LTR Ignore
 		- MPHY/PLL gating status (Sunrisepoint PCH only)
 
-config INTEL_PMC_IPC
-	tristate "Intel PMC IPC Driver"
-	depends on ACPI && PCI
-	---help---
-	This driver provides support for PMC control on some Intel platforms.
-	The PMC is an ARC processor which defines IPC commands for communication
-	with other entities in the CPU.
-
 config INTEL_PUNIT_IPC
 	tristate "Intel P-Unit IPC Driver"
 	---help---
@@ -1342,17 +1345,39 @@ config INTEL_PUNIT_IPC
 	  which is used to bridge the communications between kernel and P-Unit.
 
 config INTEL_SCU_IPC
-	bool "Intel SCU IPC Support"
-	depends on X86_INTEL_MID
-	default y
-	---help---
-	  IPC is used to bridge the communications between kernel and SCU on
-	  some embedded Intel x86 platforms. This is not needed for PC-type
-	  machines.
+	bool
+
+config INTEL_SCU
+	bool
+	select INTEL_SCU_IPC
+
+config INTEL_SCU_PCI
+	bool "Intel SCU PCI driver"
+	depends on PCI
+	select INTEL_SCU
+	help
+	  This driver is used to bridge the communications between kernel
+	  and SCU on some embedded Intel x86 platforms. It also creates
+	  devices that are connected to the SoC through the SCU.
+	  Platforms supported:
+	    Medfield
+	    Clovertrail
+	    Merrifield
+	    Broxton
+	    Apollo Lake
+
+config INTEL_SCU_PLATFORM
+	tristate "Intel SCU platform driver"
+	depends on ACPI
+	select INTEL_SCU
+	help
+	  This driver is used to bridge the communications between kernel
+	  and SCU (sometimes called PMC as well). The driver currently
+	  supports Intel Elkhart Lake and compatible platforms.
 
 config INTEL_SCU_IPC_UTIL
 	tristate "Intel SCU IPC utility driver"
-	depends on INTEL_SCU_IPC
+	depends on INTEL_SCU
 	---help---
 	  The IPC Util driver provides an interface with the SCU enabling
 	  low level access for debug work and updating the firmware. Say
@@ -1360,7 +1385,9 @@ config INTEL_SCU_IPC_UTIL
 
 config INTEL_TELEMETRY
 	tristate "Intel SoC Telemetry Driver"
-	depends on INTEL_PMC_IPC && INTEL_PUNIT_IPC && X86_64
+	depends on X86_64
+	depends on MFD_INTEL_PMC_BXT
+	depends on INTEL_PUNIT_IPC
 	---help---
 	  This driver provides interfaces to configure and use
 	  telemetry for INTEL SoC from APL onwards. It is also
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index 53408d965874..2b85852a1a87 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -11,6 +11,7 @@ obj-$(CONFIG_WMI_BMOF)		+= wmi-bmof.o
 # WMI drivers
 obj-$(CONFIG_ALIENWARE_WMI)		+= alienware-wmi.o
 obj-$(CONFIG_HUAWEI_WMI)		+= huawei-wmi.o
+obj-$(CONFIG_INTEL_WMI_SBL_FW_UPDATE)	+= intel-wmi-sbl-fw-update.o
 obj-$(CONFIG_INTEL_WMI_THUNDERBOLT)	+= intel-wmi-thunderbolt.o
 obj-$(CONFIG_MXM_WMI)			+= mxm-wmi.o
 obj-$(CONFIG_PEAQ_WMI)			+= peaq-wmi.o
@@ -138,9 +139,10 @@ obj-$(CONFIG_INTEL_MFLD_THERMAL)	+= intel_mid_thermal.o
 obj-$(CONFIG_INTEL_MID_POWER_BUTTON)	+= intel_mid_powerbtn.o
 obj-$(CONFIG_INTEL_MRFLD_PWRBTN)	+= intel_mrfld_pwrbtn.o
 obj-$(CONFIG_INTEL_PMC_CORE)		+= intel_pmc_core.o intel_pmc_core_pltdrv.o
-obj-$(CONFIG_INTEL_PMC_IPC)		+= intel_pmc_ipc.o
 obj-$(CONFIG_INTEL_PUNIT_IPC)		+= intel_punit_ipc.o
 obj-$(CONFIG_INTEL_SCU_IPC)		+= intel_scu_ipc.o
+obj-$(CONFIG_INTEL_SCU_PCI)		+= intel_scu_pcidrv.o
+obj-$(CONFIG_INTEL_SCU_PLATFORM)	+= intel_scu_pltdrv.o
 obj-$(CONFIG_INTEL_SCU_IPC_UTIL)	+= intel_scu_ipcutil.o
 obj-$(CONFIG_INTEL_TELEMETRY)		+= intel_telemetry_core.o \
 					   intel_telemetry_pltdrv.o \
diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
index 8cc86f4e3ac1..4df7609b4aa9 100644
--- a/drivers/platform/x86/acerhdf.c
+++ b/drivers/platform/x86/acerhdf.c
@@ -827,7 +827,7 @@ MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTMU*:");
 MODULE_ALIAS("dmi:*:*Packard*Bell*:pnENBFT*:");
 MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTMA*:");
 MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTVR46*:");
-MODULE_ALIAS("dmi:*:*Acer*:pnExtensa 5420*:");
+MODULE_ALIAS("dmi:*:*Acer*:pnExtensa*5420*:");
 
 module_init(acerhdf_init);
 module_exit(acerhdf_exit);
diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
index a666fbc2e73b..0edafe687fa9 100644
--- a/drivers/platform/x86/asus-laptop.c
+++ b/drivers/platform/x86/asus-laptop.c
@@ -640,22 +640,15 @@ static enum led_brightness asus_kled_cdev_get(struct led_classdev *led_cdev)
 
 static void asus_led_exit(struct asus_laptop *asus)
 {
-	if (!IS_ERR_OR_NULL(asus->wled.led.dev))
-		led_classdev_unregister(&asus->wled.led);
-	if (!IS_ERR_OR_NULL(asus->bled.led.dev))
-		led_classdev_unregister(&asus->bled.led);
-	if (!IS_ERR_OR_NULL(asus->mled.led.dev))
-		led_classdev_unregister(&asus->mled.led);
-	if (!IS_ERR_OR_NULL(asus->tled.led.dev))
-		led_classdev_unregister(&asus->tled.led);
-	if (!IS_ERR_OR_NULL(asus->pled.led.dev))
-		led_classdev_unregister(&asus->pled.led);
-	if (!IS_ERR_OR_NULL(asus->rled.led.dev))
-		led_classdev_unregister(&asus->rled.led);
-	if (!IS_ERR_OR_NULL(asus->gled.led.dev))
-		led_classdev_unregister(&asus->gled.led);
-	if (!IS_ERR_OR_NULL(asus->kled.led.dev))
-		led_classdev_unregister(&asus->kled.led);
+	led_classdev_unregister(&asus->wled.led);
+	led_classdev_unregister(&asus->bled.led);
+	led_classdev_unregister(&asus->mled.led);
+	led_classdev_unregister(&asus->tled.led);
+	led_classdev_unregister(&asus->pled.led);
+	led_classdev_unregister(&asus->rled.led);
+	led_classdev_unregister(&asus->gled.led);
+	led_classdev_unregister(&asus->kled.led);
+
 	if (asus->led_workqueue) {
 		destroy_workqueue(asus->led_workqueue);
 		asus->led_workqueue = NULL;
diff --git a/drivers/platform/x86/asus-nb-wmi.c b/drivers/platform/x86/asus-nb-wmi.c
index c4404d9c1de4..8c4d00482ef0 100644
--- a/drivers/platform/x86/asus-nb-wmi.c
+++ b/drivers/platform/x86/asus-nb-wmi.c
@@ -472,6 +472,7 @@ static const struct key_entry asus_nb_wmi_keymap[] = {
 	{ KE_KEY, 0x6B, { KEY_TOUCHPAD_TOGGLE } },
 	{ KE_IGNORE, 0x6E, },  /* Low Battery notification */
 	{ KE_KEY, 0x71, { KEY_F13 } }, /* General-purpose button */
+	{ KE_IGNORE, 0x79, },  /* Charger type dectection notification */
 	{ KE_KEY, 0x7a, { KEY_ALS_TOGGLE } }, /* Ambient Light Sensor Toggle */
 	{ KE_KEY, 0x7c, { KEY_MICMUTE } },
 	{ KE_KEY, 0x7D, { KEY_BLUETOOTH } }, /* Bluetooth Enable */
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index bb7c529d7d16..877aade19497 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -57,6 +57,7 @@ MODULE_LICENSE("GPL");
 #define NOTIFY_BRNDOWN_MIN		0x20
 #define NOTIFY_BRNDOWN_MAX		0x2e
 #define NOTIFY_FNLOCK_TOGGLE		0x4e
+#define NOTIFY_KBD_DOCK_CHANGE		0x75
 #define NOTIFY_KBD_BRTUP		0xc4
 #define NOTIFY_KBD_BRTDWN		0xc5
 #define NOTIFY_KBD_BRTTOGGLE		0xc7
@@ -116,6 +117,8 @@ struct bios_args {
 	u32 arg0;
 	u32 arg1;
 	u32 arg2; /* At least TUF Gaming series uses 3 dword input buffer. */
+	u32 arg4;
+	u32 arg5;
 } __packed;
 
 /*
@@ -222,45 +225,6 @@ struct asus_wmi {
 	struct asus_wmi_driver *driver;
 };
 
-/* Input **********************************************************************/
-
-static int asus_wmi_input_init(struct asus_wmi *asus)
-{
-	int err;
-
-	asus->inputdev = input_allocate_device();
-	if (!asus->inputdev)
-		return -ENOMEM;
-
-	asus->inputdev->name = asus->driver->input_name;
-	asus->inputdev->phys = asus->driver->input_phys;
-	asus->inputdev->id.bustype = BUS_HOST;
-	asus->inputdev->dev.parent = &asus->platform_device->dev;
-	set_bit(EV_REP, asus->inputdev->evbit);
-
-	err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
-	if (err)
-		goto err_free_dev;
-
-	err = input_register_device(asus->inputdev);
-	if (err)
-		goto err_free_dev;
-
-	return 0;
-
-err_free_dev:
-	input_free_device(asus->inputdev);
-	return err;
-}
-
-static void asus_wmi_input_exit(struct asus_wmi *asus)
-{
-	if (asus->inputdev)
-		input_unregister_device(asus->inputdev);
-
-	asus->inputdev = NULL;
-}
-
 /* WMI ************************************************************************/
 
 static int asus_wmi_evaluate_method3(u32 method_id,
@@ -309,7 +273,7 @@ static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
 	struct acpi_buffer input;
 	u64 phys_addr;
 	u32 retval;
-	u32 status = -1;
+	u32 status;
 
 	/*
 	 * Copy to dma capable address otherwise memory corruption occurs as
@@ -381,6 +345,53 @@ static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id)
 	return status == 0 && (retval & ASUS_WMI_DSTS_PRESENCE_BIT);
 }
 
+/* Input **********************************************************************/
+
+static int asus_wmi_input_init(struct asus_wmi *asus)
+{
+	int err, result;
+
+	asus->inputdev = input_allocate_device();
+	if (!asus->inputdev)
+		return -ENOMEM;
+
+	asus->inputdev->name = asus->driver->input_name;
+	asus->inputdev->phys = asus->driver->input_phys;
+	asus->inputdev->id.bustype = BUS_HOST;
+	asus->inputdev->dev.parent = &asus->platform_device->dev;
+	set_bit(EV_REP, asus->inputdev->evbit);
+
+	err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
+	if (err)
+		goto err_free_dev;
+
+	result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_KBD_DOCK);
+	if (result >= 0) {
+		input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE);
+		input_report_switch(asus->inputdev, SW_TABLET_MODE, !result);
+	} else if (result != -ENODEV) {
+		pr_err("Error checking for keyboard-dock: %d\n", result);
+	}
+
+	err = input_register_device(asus->inputdev);
+	if (err)
+		goto err_free_dev;
+
+	return 0;
+
+err_free_dev:
+	input_free_device(asus->inputdev);
+	return err;
+}
+
+static void asus_wmi_input_exit(struct asus_wmi *asus)
+{
+	if (asus->inputdev)
+		input_unregister_device(asus->inputdev);
+
+	asus->inputdev = NULL;
+}
+
 /* Battery ********************************************************************/
 
 /* The battery maximum charging percentage */
@@ -675,14 +686,11 @@ static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
 
 static void asus_wmi_led_exit(struct asus_wmi *asus)
 {
-	if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
-		led_classdev_unregister(&asus->kbd_led);
-	if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
-		led_classdev_unregister(&asus->tpd_led);
-	if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
-		led_classdev_unregister(&asus->wlan_led);
-	if (!IS_ERR_OR_NULL(asus->lightbar_led.dev))
-		led_classdev_unregister(&asus->lightbar_led);
+	led_classdev_unregister(&asus->kbd_led);
+	led_classdev_unregister(&asus->tpd_led);
+	led_classdev_unregister(&asus->wlan_led);
+	led_classdev_unregister(&asus->lightbar_led);
+
 	if (asus->led_workqueue)
 		destroy_workqueue(asus->led_workqueue);
 }
@@ -2058,9 +2066,9 @@ static int asus_wmi_get_event_code(u32 value)
 
 static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus)
 {
-	int orig_code;
 	unsigned int key_value = 1;
 	bool autorelease = 1;
+	int result, orig_code;
 
 	orig_code = code;
 
@@ -2105,6 +2113,17 @@ static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus)
 		return;
 	}
 
+	if (code == NOTIFY_KBD_DOCK_CHANGE) {
+		result = asus_wmi_get_devstate_simple(asus,
+						      ASUS_WMI_DEVID_KBD_DOCK);
+		if (result >= 0) {
+			input_report_switch(asus->inputdev, SW_TABLET_MODE,
+					    !result);
+			input_sync(asus->inputdev);
+		}
+		return;
+	}
+
 	if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) {
 		fan_boost_mode_switch_next(asus);
 		return;
diff --git a/drivers/platform/x86/dcdbas.c b/drivers/platform/x86/dcdbas.c
index 84f4cc839cc3..d513a59a5d47 100644
--- a/drivers/platform/x86/dcdbas.c
+++ b/drivers/platform/x86/dcdbas.c
@@ -15,6 +15,7 @@
 #include <linux/platform_device.h>
 #include <linux/acpi.h>
 #include <linux/dma-mapping.h>
+#include <linux/dmi.h>
 #include <linux/errno.h>
 #include <linux/cpu.h>
 #include <linux/gfp.h>
@@ -34,7 +35,7 @@
 #include "dcdbas.h"
 
 #define DRIVER_NAME		"dcdbas"
-#define DRIVER_VERSION		"5.6.0-3.3"
+#define DRIVER_VERSION		"5.6.0-3.4"
 #define DRIVER_DESCRIPTION	"Dell Systems Management Base Driver"
 
 static struct platform_device *dcdbas_pdev;
@@ -45,7 +46,7 @@ static unsigned long smi_data_buf_size;
 static unsigned long max_smi_data_buf_size = MAX_SMI_DATA_BUF_SIZE;
 static u32 smi_data_buf_phys_addr;
 static DEFINE_MUTEX(smi_data_lock);
-static u8 *eps_buffer;
+static u8 *bios_buffer;
 
 static unsigned int host_control_action;
 static unsigned int host_control_smi_type;
@@ -518,8 +519,10 @@ static inline struct smm_eps_table *check_eps_table(u8 *addr)
 
 static int dcdbas_check_wsmt(void)
 {
+	const struct dmi_device *dev = NULL;
 	struct acpi_table_wsmt *wsmt = NULL;
 	struct smm_eps_table *eps = NULL;
+	u64 bios_buf_paddr;
 	u64 remap_size;
 	u8 *addr;
 
@@ -532,6 +535,17 @@ static int dcdbas_check_wsmt(void)
 	    !(wsmt->protection_flags & ACPI_WSMT_COMM_BUFFER_NESTED_PTR_PROTECTION))
 		return 0;
 
+	/*
+	 * BIOS could provide the address/size of the protected buffer
+	 * in an SMBIOS string or in an EPS structure in 0xFxxxx.
+	 */
+
+	/* Check SMBIOS for buffer address */
+	while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev)))
+		if (sscanf(dev->name, "30[%16llx;%8llx]", &bios_buf_paddr,
+		    &remap_size) == 2)
+			goto remap;
+
 	/* Scan for EPS (entry point structure) */
 	for (addr = (u8 *)__va(0xf0000);
 	     addr < (u8 *)__va(0x100000 - sizeof(struct smm_eps_table));
@@ -542,34 +556,37 @@ static int dcdbas_check_wsmt(void)
 	}
 
 	if (!eps) {
-		dev_dbg(&dcdbas_pdev->dev, "found WSMT, but no EPS found\n");
+		dev_dbg(&dcdbas_pdev->dev, "found WSMT, but no firmware buffer found\n");
 		return -ENODEV;
 	}
+	bios_buf_paddr = eps->smm_comm_buff_addr;
+	remap_size = eps->num_of_4k_pages * PAGE_SIZE;
 
+remap:
 	/*
 	 * Get physical address of buffer and map to virtual address.
 	 * Table gives size in 4K pages, regardless of actual system page size.
 	 */
-	if (upper_32_bits(eps->smm_comm_buff_addr + 8)) {
-		dev_warn(&dcdbas_pdev->dev, "found WSMT, but EPS buffer address is above 4GB\n");
+	if (upper_32_bits(bios_buf_paddr + 8)) {
+		dev_warn(&dcdbas_pdev->dev, "found WSMT, but buffer address is above 4GB\n");
 		return -EINVAL;
 	}
 	/*
 	 * Limit remap size to MAX_SMI_DATA_BUF_SIZE + 8 (since the first 8
 	 * bytes are used for a semaphore, not the data buffer itself).
 	 */
-	remap_size = eps->num_of_4k_pages * PAGE_SIZE;
 	if (remap_size > MAX_SMI_DATA_BUF_SIZE + 8)
 		remap_size = MAX_SMI_DATA_BUF_SIZE + 8;
-	eps_buffer = memremap(eps->smm_comm_buff_addr, remap_size, MEMREMAP_WB);
-	if (!eps_buffer) {
-		dev_warn(&dcdbas_pdev->dev, "found WSMT, but failed to map EPS buffer\n");
+
+	bios_buffer = memremap(bios_buf_paddr, remap_size, MEMREMAP_WB);
+	if (!bios_buffer) {
+		dev_warn(&dcdbas_pdev->dev, "found WSMT, but failed to map buffer\n");
 		return -ENOMEM;
 	}
 
 	/* First 8 bytes is for a semaphore, not part of the smi_data_buf */
-	smi_data_buf_phys_addr = eps->smm_comm_buff_addr + 8;
-	smi_data_buf = eps_buffer + 8;
+	smi_data_buf_phys_addr = bios_buf_paddr + 8;
+	smi_data_buf = bios_buffer + 8;
 	smi_data_buf_size = remap_size - 8;
 	max_smi_data_buf_size = smi_data_buf_size;
 	wsmt_enabled = true;
@@ -736,8 +753,8 @@ static void __exit dcdbas_exit(void)
 	 */
 	if (dcdbas_pdev)
 		smi_data_buf_free();
-	if (eps_buffer)
-		memunmap(eps_buffer);
+	if (bios_buffer)
+		memunmap(bios_buffer);
 	platform_device_unregister(dcdbas_pdev_reg);
 	platform_driver_unregister(&dcdbas_driver);
 }
diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index f8d3e3bd1bb5..5e9c2296931c 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -2204,10 +2204,13 @@ static int __init dell_init(void)
 
 	dell_laptop_register_notifier(&dell_laptop_notifier);
 
-	micmute_led_cdev.brightness = ledtrig_audio_get(LED_AUDIO_MICMUTE);
-	ret = led_classdev_register(&platform_device->dev, &micmute_led_cdev);
-	if (ret < 0)
-		goto fail_led;
+	if (dell_smbios_find_token(GLOBAL_MIC_MUTE_DISABLE) &&
+	    dell_smbios_find_token(GLOBAL_MIC_MUTE_ENABLE)) {
+		micmute_led_cdev.brightness = ledtrig_audio_get(LED_AUDIO_MICMUTE);
+		ret = led_classdev_register(&platform_device->dev, &micmute_led_cdev);
+		if (ret < 0)
+			goto fail_led;
+	}
 
 	if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
 		return 0;
diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c
index 86e8dd6a8b33..c25a4286d766 100644
--- a/drivers/platform/x86/dell-wmi.c
+++ b/drivers/platform/x86/dell-wmi.c
@@ -310,6 +310,16 @@ static const struct key_entry dell_wmi_keymap_type_0011[] = {
 	/* Battery inserted */
 	{ KE_IGNORE, 0xfff1, { KEY_RESERVED } },
 
+	/*
+	 * Detachable keyboard detached / undocked
+	 * Note SW_TABLET_MODE is already reported through the intel_vbtn
+	 * driver for this, so we ignore it.
+	 */
+	{ KE_IGNORE, 0xfff2, { KEY_RESERVED } },
+
+	/* Detachable keyboard attached / docked */
+	{ KE_IGNORE, 0xfff3, { KEY_RESERVED } },
+
 	/* Keyboard backlight level changed */
 	{ KE_IGNORE, KBD_LED_OFF_TOKEN,      { KEY_RESERVED } },
 	{ KE_IGNORE, KBD_LED_ON_TOKEN,       { KEY_RESERVED } },
diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
index 776868d5e458..ba08c9235f76 100644
--- a/drivers/platform/x86/eeepc-laptop.c
+++ b/drivers/platform/x86/eeepc-laptop.c
@@ -541,13 +541,11 @@ static int eeepc_led_init(struct eeepc_laptop *eeepc)
 
 static void eeepc_led_exit(struct eeepc_laptop *eeepc)
 {
-	if (!IS_ERR_OR_NULL(eeepc->tpd_led.dev))
-		led_classdev_unregister(&eeepc->tpd_led);
+	led_classdev_unregister(&eeepc->tpd_led);
 	if (eeepc->led_workqueue)
 		destroy_workqueue(eeepc->led_workqueue);
 }
 
-
 /*
  * PCI hotplug (for wlan rfkill)
  */
diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
index a881b709af25..1762f335bac9 100644
--- a/drivers/platform/x86/hp-wmi.c
+++ b/drivers/platform/x86/hp-wmi.c
@@ -111,10 +111,10 @@ enum hp_wireless2_bits {
 	HPWMI_POWER_SOFT	= 0x02,
 	HPWMI_POWER_BIOS	= 0x04,
 	HPWMI_POWER_HARD	= 0x08,
+	HPWMI_POWER_FW_OR_HW	= HPWMI_POWER_BIOS | HPWMI_POWER_HARD,
 };
 
-#define IS_HWBLOCKED(x) ((x & (HPWMI_POWER_BIOS | HPWMI_POWER_HARD)) \
-			 != (HPWMI_POWER_BIOS | HPWMI_POWER_HARD))
+#define IS_HWBLOCKED(x) ((x & HPWMI_POWER_FW_OR_HW) != HPWMI_POWER_FW_OR_HW)
 #define IS_SWBLOCKED(x) !(x & HPWMI_POWER_SOFT)
 
 struct bios_rfkill2_device_state {
@@ -461,8 +461,14 @@ static ssize_t postcode_show(struct device *dev, struct device_attribute *attr,
 static ssize_t als_store(struct device *dev, struct device_attribute *attr,
 			 const char *buf, size_t count)
 {
-	u32 tmp = simple_strtoul(buf, NULL, 10);
-	int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, HPWMI_WRITE, &tmp,
+	u32 tmp;
+	int ret;
+
+	ret = kstrtou32(buf, 10, &tmp);
+	if (ret)
+		return ret;
+
+	ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, HPWMI_WRITE, &tmp,
 				       sizeof(tmp), sizeof(tmp));
 	if (ret)
 		return ret < 0 ? ret : -EINVAL;
@@ -473,22 +479,20 @@ static ssize_t als_store(struct device *dev, struct device_attribute *attr,
 static ssize_t postcode_store(struct device *dev, struct device_attribute *attr,
 			      const char *buf, size_t count)
 {
-	long unsigned int tmp2;
+	u32 tmp = 1;
+	bool clear;
 	int ret;
-	u32 tmp;
 
-	ret = kstrtoul(buf, 10, &tmp2);
-	if (!ret && tmp2 != 1)
-		ret = -EINVAL;
+	ret = kstrtobool(buf, &clear);
 	if (ret)
-		goto out;
+		return ret;
+
+	if (clear == false)
+		return -EINVAL;
 
 	/* Clear the POST error code. It is kept until until cleared. */
-	tmp = (u32) tmp2;
 	ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, HPWMI_WRITE, &tmp,
 				       sizeof(tmp), sizeof(tmp));
-
-out:
 	if (ret)
 		return ret < 0 ? ret : -EINVAL;
 
diff --git a/drivers/platform/x86/intel-hid.c b/drivers/platform/x86/intel-hid.c
index cc7dd4d87cce..9ee79b74311c 100644
--- a/drivers/platform/x86/intel-hid.c
+++ b/drivers/platform/x86/intel-hid.c
@@ -79,6 +79,13 @@ static const struct dmi_system_id button_array_table[] = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "Wacom MobileStudio Pro 16"),
 		},
 	},
+	{
+		.ident = "HP Spectre x2 (2015)",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "HP"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "HP Spectre x2 Detachable"),
+		},
+	},
 	{ }
 };
 
diff --git a/drivers/platform/x86/intel-vbtn.c b/drivers/platform/x86/intel-vbtn.c
index b5880936d785..0487b606a274 100644
--- a/drivers/platform/x86/intel-vbtn.c
+++ b/drivers/platform/x86/intel-vbtn.c
@@ -40,28 +40,70 @@ static const struct key_entry intel_vbtn_keymap[] = {
 	{ KE_IGNORE, 0xC7, { KEY_VOLUMEDOWN } },	/* volume-down key release */
 	{ KE_KEY,    0xC8, { KEY_ROTATE_LOCK_TOGGLE } },	/* rotate-lock key press */
 	{ KE_KEY,    0xC9, { KEY_ROTATE_LOCK_TOGGLE } },	/* rotate-lock key release */
+};
+
+static const struct key_entry intel_vbtn_switchmap[] = {
 	{ KE_SW,     0xCA, { .sw = { SW_DOCK, 1 } } },		/* Docked */
 	{ KE_SW,     0xCB, { .sw = { SW_DOCK, 0 } } },		/* Undocked */
 	{ KE_SW,     0xCC, { .sw = { SW_TABLET_MODE, 1 } } },	/* Tablet */
 	{ KE_SW,     0xCD, { .sw = { SW_TABLET_MODE, 0 } } },	/* Laptop */
-	{ KE_END },
 };
 
+#define KEYMAP_LEN \
+	(ARRAY_SIZE(intel_vbtn_keymap) + ARRAY_SIZE(intel_vbtn_switchmap) + 1)
+
 struct intel_vbtn_priv {
+	struct key_entry keymap[KEYMAP_LEN];
 	struct input_dev *input_dev;
+	bool has_buttons;
+	bool has_switches;
 	bool wakeup_mode;
 };
 
+static void detect_tablet_mode(struct platform_device *device)
+{
+	struct intel_vbtn_priv *priv = dev_get_drvdata(&device->dev);
+	acpi_handle handle = ACPI_HANDLE(&device->dev);
+	unsigned long long vgbs;
+	acpi_status status;
+	int m;
+
+	status = acpi_evaluate_integer(handle, "VGBS", NULL, &vgbs);
+	if (ACPI_FAILURE(status))
+		return;
+
+	m = !(vgbs & TABLET_MODE_FLAG);
+	input_report_switch(priv->input_dev, SW_TABLET_MODE, m);
+	m = (vgbs & DOCK_MODE_FLAG) ? 1 : 0;
+	input_report_switch(priv->input_dev, SW_DOCK, m);
+}
+
 static int intel_vbtn_input_setup(struct platform_device *device)
 {
 	struct intel_vbtn_priv *priv = dev_get_drvdata(&device->dev);
-	int ret;
+	int ret, keymap_len = 0;
+
+	if (priv->has_buttons) {
+		memcpy(&priv->keymap[keymap_len], intel_vbtn_keymap,
+		       ARRAY_SIZE(intel_vbtn_keymap) *
+		       sizeof(struct key_entry));
+		keymap_len += ARRAY_SIZE(intel_vbtn_keymap);
+	}
+
+	if (priv->has_switches) {
+		memcpy(&priv->keymap[keymap_len], intel_vbtn_switchmap,
+		       ARRAY_SIZE(intel_vbtn_switchmap) *
+		       sizeof(struct key_entry));
+		keymap_len += ARRAY_SIZE(intel_vbtn_switchmap);
+	}
+
+	priv->keymap[keymap_len].type = KE_END;
 
 	priv->input_dev = devm_input_allocate_device(&device->dev);
 	if (!priv->input_dev)
 		return -ENOMEM;
 
-	ret = sparse_keymap_setup(priv->input_dev, intel_vbtn_keymap, NULL);
+	ret = sparse_keymap_setup(priv->input_dev, priv->keymap, NULL);
 	if (ret)
 		return ret;
 
@@ -69,6 +111,9 @@ static int intel_vbtn_input_setup(struct platform_device *device)
 	priv->input_dev->name = "Intel Virtual Button driver";
 	priv->input_dev->id.bustype = BUS_HOST;
 
+	if (priv->has_switches)
+		detect_tablet_mode(device);
+
 	return input_register_device(priv->input_dev);
 }
 
@@ -114,44 +159,46 @@ out_unknown:
 	dev_dbg(&device->dev, "unknown event index 0x%x\n", event);
 }
 
-static void detect_tablet_mode(struct platform_device *device)
+static bool intel_vbtn_has_buttons(acpi_handle handle)
 {
-	const char *chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
-	struct intel_vbtn_priv *priv = dev_get_drvdata(&device->dev);
-	acpi_handle handle = ACPI_HANDLE(&device->dev);
-	struct acpi_buffer vgbs_output = { ACPI_ALLOCATE_BUFFER, NULL };
-	union acpi_object *obj;
 	acpi_status status;
-	int m;
 
-	if (!(chassis_type && strcmp(chassis_type, "31") == 0))
-		goto out;
+	status = acpi_evaluate_object(handle, "VBDL", NULL, NULL);
+	return ACPI_SUCCESS(status);
+}
 
-	status = acpi_evaluate_object(handle, "VGBS", NULL, &vgbs_output);
-	if (ACPI_FAILURE(status))
-		goto out;
+static bool intel_vbtn_has_switches(acpi_handle handle)
+{
+	const char *chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
+	unsigned long long vgbs;
+	acpi_status status;
 
-	obj = vgbs_output.pointer;
-	if (!(obj && obj->type == ACPI_TYPE_INTEGER))
-		goto out;
+	/*
+	 * Some normal laptops have a VGBS method despite being non-convertible
+	 * and their VGBS method always returns 0, causing detect_tablet_mode()
+	 * to report SW_TABLET_MODE=1 to userspace, which causes issues.
+	 * These laptops have a DMI chassis_type of 9 ("Laptop"), do not report
+	 * switches on any devices with a DMI chassis_type of 9.
+	 */
+	if (chassis_type && strcmp(chassis_type, "9") == 0)
+		return false;
 
-	m = !(obj->integer.value & TABLET_MODE_FLAG);
-	input_report_switch(priv->input_dev, SW_TABLET_MODE, m);
-	m = (obj->integer.value & DOCK_MODE_FLAG) ? 1 : 0;
-	input_report_switch(priv->input_dev, SW_DOCK, m);
-out:
-	kfree(vgbs_output.pointer);
+	status = acpi_evaluate_integer(handle, "VGBS", NULL, &vgbs);
+	return ACPI_SUCCESS(status);
 }
 
 static int intel_vbtn_probe(struct platform_device *device)
 {
 	acpi_handle handle = ACPI_HANDLE(&device->dev);
+	bool has_buttons, has_switches;
 	struct intel_vbtn_priv *priv;
 	acpi_status status;
 	int err;
 
-	status = acpi_evaluate_object(handle, "VBDL", NULL, NULL);
-	if (ACPI_FAILURE(status)) {
+	has_buttons = intel_vbtn_has_buttons(handle);
+	has_switches = intel_vbtn_has_switches(handle);
+
+	if (!has_buttons && !has_switches) {
 		dev_warn(&device->dev, "failed to read Intel Virtual Button driver\n");
 		return -ENODEV;
 	}
@@ -161,14 +208,15 @@ static int intel_vbtn_probe(struct platform_device *device)
 		return -ENOMEM;
 	dev_set_drvdata(&device->dev, priv);
 
+	priv->has_buttons = has_buttons;
+	priv->has_switches = has_switches;
+
 	err = intel_vbtn_input_setup(device);
 	if (err) {
 		pr_err("Failed to setup Intel Virtual Button\n");
 		return err;
 	}
 
-	detect_tablet_mode(device);
-
 	status = acpi_install_notify_handler(handle,
 					     ACPI_DEVICE_NOTIFY,
 					     notify_handler,
diff --git a/drivers/platform/x86/intel-wmi-sbl-fw-update.c b/drivers/platform/x86/intel-wmi-sbl-fw-update.c
new file mode 100644
index 000000000000..ea87fa0786e8
--- /dev/null
+++ b/drivers/platform/x86/intel-wmi-sbl-fw-update.c
@@ -0,0 +1,145 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Slim Bootloader(SBL) firmware update signaling driver
+ *
+ * Slim Bootloader is a small, open-source, non UEFI compliant, boot firmware
+ * optimized for running on certain Intel platforms.
+ *
+ * SBL exposes an ACPI-WMI device via /sys/bus/wmi/devices/<INTEL_WMI_SBL_GUID>.
+ * This driver further adds "firmware_update_request" device attribute.
+ * This attribute normally has a value of 0 and userspace can signal SBL
+ * to update firmware, on next reboot, by writing a value of 1.
+ *
+ * More details of SBL firmware update process is available at:
+ * https://slimbootloader.github.io/security/firmware-update.html
+ */
+
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/wmi.h>
+
+#define INTEL_WMI_SBL_GUID  "44FADEB1-B204-40F2-8581-394BBDC1B651"
+
+static int get_fwu_request(struct device *dev, u32 *out)
+{
+	struct acpi_buffer result = {ACPI_ALLOCATE_BUFFER, NULL};
+	union acpi_object *obj;
+	acpi_status status;
+
+	status = wmi_query_block(INTEL_WMI_SBL_GUID, 0, &result);
+	if (ACPI_FAILURE(status)) {
+		dev_err(dev, "wmi_query_block failed\n");
+		return -ENODEV;
+	}
+
+	obj = (union acpi_object *)result.pointer;
+	if (!obj || obj->type != ACPI_TYPE_INTEGER) {
+		dev_warn(dev, "wmi_query_block returned invalid value\n");
+		kfree(obj);
+		return -EINVAL;
+	}
+
+	*out = obj->integer.value;
+	kfree(obj);
+
+	return 0;
+}
+
+static int set_fwu_request(struct device *dev, u32 in)
+{
+	struct acpi_buffer input;
+	acpi_status status;
+	u32 value;
+
+	value = in;
+	input.length = sizeof(u32);
+	input.pointer = &value;
+
+	status = wmi_set_block(INTEL_WMI_SBL_GUID, 0, &input);
+	if (ACPI_FAILURE(status)) {
+		dev_err(dev, "wmi_set_block failed\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static ssize_t firmware_update_request_show(struct device *dev,
+					    struct device_attribute *attr,
+					    char *buf)
+{
+	u32 val;
+	int ret;
+
+	ret = get_fwu_request(dev, &val);
+	if (ret)
+		return ret;
+
+	return sprintf(buf, "%d\n", val);
+}
+
+static ssize_t firmware_update_request_store(struct device *dev,
+					     struct device_attribute *attr,
+					     const char *buf, size_t count)
+{
+	unsigned int val;
+	int ret;
+
+	ret = kstrtouint(buf, 0, &val);
+	if (ret)
+		return ret;
+
+	/* May later be extended to support values other than 0 and 1 */
+	if (val > 1)
+		return -ERANGE;
+
+	ret = set_fwu_request(dev, val);
+	if (ret)
+		return ret;
+
+	return count;
+}
+static DEVICE_ATTR_RW(firmware_update_request);
+
+static struct attribute *firmware_update_attrs[] = {
+	&dev_attr_firmware_update_request.attr,
+	NULL
+};
+ATTRIBUTE_GROUPS(firmware_update);
+
+static int intel_wmi_sbl_fw_update_probe(struct wmi_device *wdev,
+					 const void *context)
+{
+	dev_info(&wdev->dev, "Slim Bootloader signaling driver attached\n");
+	return 0;
+}
+
+static int intel_wmi_sbl_fw_update_remove(struct wmi_device *wdev)
+{
+	dev_info(&wdev->dev, "Slim Bootloader signaling driver removed\n");
+	return 0;
+}
+
+static const struct wmi_device_id intel_wmi_sbl_id_table[] = {
+	{ .guid_string = INTEL_WMI_SBL_GUID },
+	{}
+};
+MODULE_DEVICE_TABLE(wmi, intel_wmi_sbl_id_table);
+
+static struct wmi_driver intel_wmi_sbl_fw_update_driver = {
+	.driver = {
+		.name = "intel-wmi-sbl-fw-update",
+		.dev_groups = firmware_update_groups,
+	},
+	.probe = intel_wmi_sbl_fw_update_probe,
+	.remove = intel_wmi_sbl_fw_update_remove,
+	.id_table = intel_wmi_sbl_id_table,
+};
+module_wmi_driver(intel_wmi_sbl_fw_update_driver);
+
+MODULE_AUTHOR("Jithu Joseph <jithu.joseph@intel.com>");
+MODULE_DESCRIPTION("Slim Bootloader firmware update signaling driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/platform/x86/intel_cht_int33fe_typec.c b/drivers/platform/x86/intel_cht_int33fe_typec.c
index 04138215956b..48638d1c56e5 100644
--- a/drivers/platform/x86/intel_cht_int33fe_typec.c
+++ b/drivers/platform/x86/intel_cht_int33fe_typec.c
@@ -6,14 +6,14 @@
  *
  * Some Intel Cherry Trail based device which ship with Windows 10, have
  * this weird INT33FE ACPI device with a CRS table with 4 I2cSerialBusV2
- * resources, for 4 different chips attached to various i2c busses:
- * 1. The Whiskey Cove pmic, which is also described by the INT34D3 ACPI device
+ * resources, for 4 different chips attached to various I²C buses:
+ * 1. The Whiskey Cove PMIC, which is also described by the INT34D3 ACPI device
  * 2. Maxim MAX17047 Fuel Gauge Controller
  * 3. FUSB302 USB Type-C Controller
  * 4. PI3USB30532 USB switch
  *
  * So this driver is a stub / pseudo driver whose only purpose is to
- * instantiate i2c-clients for chips 2 - 4, so that standard i2c drivers
+ * instantiate I²C clients for chips 2 - 4, so that standard I²C drivers
  * for these chips can bind to the them.
  */
 
@@ -21,43 +21,32 @@
 #include <linux/interrupt.h>
 #include <linux/pci.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>
 #include <linux/usb/pd.h>
 
 #include "intel_cht_int33fe_common.h"
 
-enum {
-	INT33FE_NODE_FUSB302,
-	INT33FE_NODE_MAX17047,
-	INT33FE_NODE_PI3USB30532,
-	INT33FE_NODE_DISPLAYPORT,
-	INT33FE_NODE_USB_CONNECTOR,
-	INT33FE_NODE_MAX,
-};
-
 /*
- * Grrr I severly dislike buggy BIOS-es. At least one BIOS enumerates
+ * Grrr, I severely dislike buggy BIOS-es. At least one BIOS enumerates
  * the max17047 both through the INT33FE ACPI device (it is right there
  * in the resources table) as well as through a separate MAX17047 device.
  *
- * These helpers are used to work around this by checking if an i2c-client
+ * These helpers are used to work around this by checking if an I²C client
  * for the max17047 has already been registered.
  */
 static int cht_int33fe_check_for_max17047(struct device *dev, void *data)
 {
 	struct i2c_client **max17047 = data;
 	struct acpi_device *adev;
-	const char *hid;
 
 	adev = ACPI_COMPANION(dev);
 	if (!adev)
 		return 0;
 
-	hid = acpi_device_hid(adev);
-
 	/* The MAX17047 ACPI node doesn't have an UID, so we don't check that */
-	if (strcmp(hid, "MAX17047"))
+	if (!acpi_dev_hid_uid_match(adev, "MAX17047", NULL))
 		return 0;
 
 	*max17047 = to_i2c_client(dev);
@@ -66,11 +55,16 @@ static int cht_int33fe_check_for_max17047(struct device *dev, void *data)
 
 static const char * const max17047_suppliers[] = { "bq24190-charger" };
 
-static const struct property_entry max17047_props[] = {
+static const struct property_entry max17047_properties[] = {
 	PROPERTY_ENTRY_STRING_ARRAY("supplied-from", max17047_suppliers),
 	{ }
 };
 
+static const struct software_node max17047_node = {
+	.name = "max17047",
+	.properties = max17047_properties,
+};
+
 /*
  * We are not using inline property here because those are constant,
  * and we need to adjust this one at runtime to point to real
@@ -80,12 +74,17 @@ static struct software_node_ref_args fusb302_mux_refs[] = {
 	{ .node = NULL },
 };
 
-static const struct property_entry fusb302_props[] = {
+static const struct property_entry fusb302_properties[] = {
 	PROPERTY_ENTRY_STRING("linux,extcon-name", "cht_wcove_pwrsrc"),
 	PROPERTY_ENTRY_REF_ARRAY("usb-role-switch", fusb302_mux_refs),
 	{ }
 };
 
+static const struct software_node fusb302_node = {
+	.name = "fusb302",
+	.properties = fusb302_properties,
+};
+
 #define PDO_FIXED_FLAGS \
 	(PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP | PDO_FIXED_USB_COMM)
 
@@ -98,31 +97,40 @@ static const u32 snk_pdo[] = {
 	PDO_VAR(5000, 12000, 3000),
 };
 
-static const struct software_node nodes[];
+static const struct software_node pi3usb30532_node = {
+	.name = "pi3usb30532",
+};
+
+static const struct software_node displayport_node = {
+	.name = "displayport",
+};
 
-static const struct property_entry usb_connector_props[] = {
+static const struct property_entry usb_connector_properties[] = {
 	PROPERTY_ENTRY_STRING("data-role", "dual"),
 	PROPERTY_ENTRY_STRING("power-role", "dual"),
 	PROPERTY_ENTRY_STRING("try-power-role", "sink"),
 	PROPERTY_ENTRY_U32_ARRAY("source-pdos", src_pdo),
 	PROPERTY_ENTRY_U32_ARRAY("sink-pdos", snk_pdo),
 	PROPERTY_ENTRY_U32("op-sink-microwatt", 2500000),
-	PROPERTY_ENTRY_REF("orientation-switch",
-			   &nodes[INT33FE_NODE_PI3USB30532]),
-	PROPERTY_ENTRY_REF("mode-switch",
-			   &nodes[INT33FE_NODE_PI3USB30532]),
-	PROPERTY_ENTRY_REF("displayport",
-			   &nodes[INT33FE_NODE_DISPLAYPORT]),
+	PROPERTY_ENTRY_REF("orientation-switch", &pi3usb30532_node),
+	PROPERTY_ENTRY_REF("mode-switch", &pi3usb30532_node),
+	PROPERTY_ENTRY_REF("displayport", &displayport_node),
 	{ }
 };
 
-static const struct software_node nodes[] = {
-	{ "fusb302", NULL, fusb302_props },
-	{ "max17047", NULL, max17047_props },
-	{ "pi3usb30532" },
-	{ "displayport" },
-	{ "connector", &nodes[0], usb_connector_props },
-	{ }
+static const struct software_node usb_connector_node = {
+	.name = "connector",
+	.parent = &fusb302_node,
+	.properties = usb_connector_properties,
+};
+
+static const struct software_node *node_group[] = {
+	&fusb302_node,
+	&max17047_node,
+	&pi3usb30532_node,
+	&displayport_node,
+	&usb_connector_node,
+	NULL
 };
 
 static int cht_int33fe_setup_dp(struct cht_int33fe_data *data)
@@ -130,7 +138,7 @@ static int cht_int33fe_setup_dp(struct cht_int33fe_data *data)
 	struct fwnode_handle *fwnode;
 	struct pci_dev *pdev;
 
-	fwnode = software_node_fwnode(&nodes[INT33FE_NODE_DISPLAYPORT]);
+	fwnode = software_node_fwnode(&displayport_node);
 	if (!fwnode)
 		return -ENODEV;
 
@@ -155,11 +163,10 @@ static int cht_int33fe_setup_dp(struct cht_int33fe_data *data)
 
 static void cht_int33fe_remove_nodes(struct cht_int33fe_data *data)
 {
-	software_node_unregister_nodes(nodes);
+	software_node_unregister_node_group(node_group);
 
 	if (fusb302_mux_refs[0].node) {
-		fwnode_handle_put(
-			software_node_fwnode(fusb302_mux_refs[0].node));
+		fwnode_handle_put(software_node_fwnode(fusb302_mux_refs[0].node));
 		fusb302_mux_refs[0].node = NULL;
 	}
 
@@ -192,7 +199,7 @@ static int cht_int33fe_add_nodes(struct cht_int33fe_data *data)
 	 */
 	fusb302_mux_refs[0].node = mux_ref_node;
 
-	ret = software_node_register_nodes(nodes);
+	ret = software_node_register_node_group(node_group);
 	if (ret)
 		return ret;
 
@@ -222,16 +229,15 @@ cht_int33fe_register_max17047(struct device *dev, struct cht_int33fe_data *data)
 	struct fwnode_handle *fwnode;
 	int ret;
 
-	fwnode = software_node_fwnode(&nodes[INT33FE_NODE_MAX17047]);
+	fwnode = software_node_fwnode(&max17047_node);
 	if (!fwnode)
 		return -ENODEV;
 
 	i2c_for_each_dev(&max17047, cht_int33fe_check_for_max17047);
 	if (max17047) {
-		/* Pre-existing i2c-client for the max17047, add device-props */
-		fwnode->secondary = ERR_PTR(-ENODEV);
-		max17047->dev.fwnode->secondary = fwnode;
-		/* And re-probe to get the new device-props applied. */
+		/* Pre-existing I²C client for the max17047, add device properties */
+		set_secondary_fwnode(&max17047->dev, fwnode);
+		/* And re-probe to get the new device properties applied */
 		ret = device_reprobe(&max17047->dev);
 		if (ret)
 			dev_warn(dev, "Reprobing max17047 error: %d\n", ret);
@@ -266,7 +272,7 @@ int cht_int33fe_typec_probe(struct cht_int33fe_data *data)
 	 *    must be registered before the fusb302 is instantiated, otherwise
 	 *    it will end up with a dummy-regulator.
 	 * Note "cht_wc_usb_typec_vbus" comes from the regulator_init_data
-	 * which is defined in i2c-cht-wc.c from where the bq24292i i2c-client
+	 * which is defined in i2c-cht-wc.c from where the bq24292i I²C client
 	 * gets instantiated. We use regulator_get_optional here so that we
 	 * don't end up getting a dummy-regulator ourselves.
 	 */
@@ -277,7 +283,7 @@ int cht_int33fe_typec_probe(struct cht_int33fe_data *data)
 	}
 	regulator_put(regulator);
 
-	/* The FUSB302 uses the irq at index 1 and is the only irq user */
+	/* The FUSB302 uses the IRQ at index 1 and is the only IRQ user */
 	fusb302_irq = acpi_dev_gpio_irq_get(ACPI_COMPANION(dev), 1);
 	if (fusb302_irq < 0) {
 		if (fusb302_irq != -EPROBE_DEFER)
@@ -289,12 +295,12 @@ int cht_int33fe_typec_probe(struct cht_int33fe_data *data)
 	if (ret)
 		return ret;
 
-	/* Work around BIOS bug, see comment on cht_int33fe_check_for_max17047 */
+	/* Work around BIOS bug, see comment on cht_int33fe_check_for_max17047() */
 	ret = cht_int33fe_register_max17047(dev, data);
 	if (ret)
 		goto out_remove_nodes;
 
-	fwnode = software_node_fwnode(&nodes[INT33FE_NODE_FUSB302]);
+	fwnode = software_node_fwnode(&fusb302_node);
 	if (!fwnode) {
 		ret = -ENODEV;
 		goto out_unregister_max17047;
@@ -312,7 +318,7 @@ int cht_int33fe_typec_probe(struct cht_int33fe_data *data)
 		goto out_unregister_max17047;
 	}
 
-	fwnode = software_node_fwnode(&nodes[INT33FE_NODE_PI3USB30532]);
+	fwnode = software_node_fwnode(&pi3usb30532_node);
 	if (!fwnode) {
 		ret = -ENODEV;
 		goto out_unregister_fusb302;
diff --git a/drivers/platform/x86/intel_mid_powerbtn.c b/drivers/platform/x86/intel_mid_powerbtn.c
index 9c9f209c8a33..df434abbb66f 100644
--- a/drivers/platform/x86/intel_mid_powerbtn.c
+++ b/drivers/platform/x86/intel_mid_powerbtn.c
@@ -46,6 +46,7 @@ struct mid_pb_ddata {
 	unsigned short mirqlvl1_addr;
 	unsigned short pbstat_addr;
 	u8 pbstat_mask;
+	struct intel_scu_ipc_dev *scu;
 	int (*setup)(struct mid_pb_ddata *ddata);
 };
 
@@ -55,7 +56,8 @@ static int mid_pbstat(struct mid_pb_ddata *ddata, int *value)
 	int ret;
 	u8 pbstat;
 
-	ret = intel_scu_ipc_ioread8(ddata->pbstat_addr, &pbstat);
+	ret = intel_scu_ipc_dev_ioread8(ddata->scu, ddata->pbstat_addr,
+					&pbstat);
 	if (ret)
 		return ret;
 
@@ -67,14 +69,15 @@ static int mid_pbstat(struct mid_pb_ddata *ddata, int *value)
 
 static int mid_irq_ack(struct mid_pb_ddata *ddata)
 {
-	return intel_scu_ipc_update_register(ddata->mirqlvl1_addr, 0, MSIC_PWRBTNM);
+	return intel_scu_ipc_dev_update(ddata->scu, ddata->mirqlvl1_addr, 0,
+					MSIC_PWRBTNM);
 }
 
 static int mrfld_setup(struct mid_pb_ddata *ddata)
 {
 	/* Unmask the PBIRQ and MPBIRQ on Tangier */
-	intel_scu_ipc_update_register(BCOVE_PBIRQ, 0, MSIC_PWRBTNM);
-	intel_scu_ipc_update_register(BCOVE_PBIRQMASK, 0, MSIC_PWRBTNM);
+	intel_scu_ipc_dev_update(ddata->scu, BCOVE_PBIRQ, 0, MSIC_PWRBTNM);
+	intel_scu_ipc_dev_update(ddata->scu, BCOVE_PBIRQMASK, 0, MSIC_PWRBTNM);
 
 	return 0;
 }
@@ -161,6 +164,10 @@ static int mid_pb_probe(struct platform_device *pdev)
 			return error;
 	}
 
+	ddata->scu = devm_intel_scu_ipc_dev_get(&pdev->dev);
+	if (!ddata->scu)
+		return -EPROBE_DEFER;
+
 	error = devm_request_threaded_irq(&pdev->dev, irq, NULL, mid_pb_isr,
 					  IRQF_ONESHOT, DRIVER_NAME, ddata);
 	if (error) {
diff --git a/drivers/platform/x86/intel_pmc_ipc.c b/drivers/platform/x86/intel_pmc_ipc.c
deleted file mode 100644
index 2433bf73f1ed..000000000000
--- a/drivers/platform/x86/intel_pmc_ipc.c
+++ /dev/null
@@ -1,949 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Driver for the Intel PMC IPC mechanism
- *
- * (C) Copyright 2014-2015 Intel Corporation
- *
- * This driver is based on Intel SCU IPC driver(intel_scu_ipc.c) by
- *     Sreedhara DS <sreedhara.ds@intel.com>
- *
- * PMC running in ARC processor communicates with other entity running in IA
- * core through IPC mechanism which in turn messaging between IA core ad PMC.
- */
-
-#include <linux/acpi.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/io-64-nonatomic-lo-hi.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/platform_device.h>
-
-#include <asm/intel_pmc_ipc.h>
-
-#include <linux/platform_data/itco_wdt.h>
-
-/*
- * IPC registers
- * The IA write to IPC_CMD command register triggers an interrupt to the ARC,
- * The ARC handles the interrupt and services it, writing optional data to
- * the IPC1 registers, updates the IPC_STS response register with the status.
- */
-#define IPC_CMD			0x00
-#define		IPC_CMD_MSI		BIT(8)
-#define		IPC_CMD_SIZE		16
-#define		IPC_CMD_SUBCMD		12
-#define IPC_STATUS		0x04
-#define		IPC_STATUS_IRQ		BIT(2)
-#define		IPC_STATUS_ERR		BIT(1)
-#define		IPC_STATUS_BUSY		BIT(0)
-#define IPC_SPTR		0x08
-#define IPC_DPTR		0x0C
-#define IPC_WRITE_BUFFER	0x80
-#define IPC_READ_BUFFER		0x90
-
-/* Residency with clock rate at 19.2MHz to usecs */
-#define S0IX_RESIDENCY_IN_USECS(d, s)		\
-({						\
-	u64 result = 10ull * ((d) + (s));	\
-	do_div(result, 192);			\
-	result;					\
-})
-
-/*
- * 16-byte buffer for sending data associated with IPC command.
- */
-#define IPC_DATA_BUFFER_SIZE	16
-
-#define IPC_LOOP_CNT		3000000
-#define IPC_MAX_SEC		3
-
-#define IPC_TRIGGER_MODE_IRQ		true
-
-/* exported resources from IFWI */
-#define PLAT_RESOURCE_IPC_INDEX		0
-#define PLAT_RESOURCE_IPC_SIZE		0x1000
-#define PLAT_RESOURCE_GCR_OFFSET	0x1000
-#define PLAT_RESOURCE_GCR_SIZE		0x1000
-#define PLAT_RESOURCE_BIOS_DATA_INDEX	1
-#define PLAT_RESOURCE_BIOS_IFACE_INDEX	2
-#define PLAT_RESOURCE_TELEM_SSRAM_INDEX	3
-#define PLAT_RESOURCE_ISP_DATA_INDEX	4
-#define PLAT_RESOURCE_ISP_IFACE_INDEX	5
-#define PLAT_RESOURCE_GTD_DATA_INDEX	6
-#define PLAT_RESOURCE_GTD_IFACE_INDEX	7
-#define PLAT_RESOURCE_ACPI_IO_INDEX	0
-
-/*
- * BIOS does not create an ACPI device for each PMC function,
- * but exports multiple resources from one ACPI device(IPC) for
- * multiple functions. This driver is responsible to create a
- * platform device and to export resources for those functions.
- */
-#define TCO_DEVICE_NAME			"iTCO_wdt"
-#define SMI_EN_OFFSET			0x40
-#define SMI_EN_SIZE			4
-#define TCO_BASE_OFFSET			0x60
-#define TCO_REGS_SIZE			16
-#define PUNIT_DEVICE_NAME		"intel_punit_ipc"
-#define TELEMETRY_DEVICE_NAME		"intel_telemetry"
-#define TELEM_SSRAM_SIZE		240
-#define TELEM_PMC_SSRAM_OFFSET		0x1B00
-#define TELEM_PUNIT_SSRAM_OFFSET	0x1A00
-#define TCO_PMC_OFFSET			0x08
-#define TCO_PMC_SIZE			0x04
-
-/* PMC register bit definitions */
-
-/* PMC_CFG_REG bit masks */
-#define PMC_CFG_NO_REBOOT_MASK		BIT_MASK(4)
-#define PMC_CFG_NO_REBOOT_EN		(1 << 4)
-#define PMC_CFG_NO_REBOOT_DIS		(0 << 4)
-
-static struct intel_pmc_ipc_dev {
-	struct device *dev;
-	void __iomem *ipc_base;
-	bool irq_mode;
-	int irq;
-	int cmd;
-	struct completion cmd_complete;
-
-	/* The following PMC BARs share the same ACPI device with the IPC */
-	resource_size_t acpi_io_base;
-	int acpi_io_size;
-	struct platform_device *tco_dev;
-
-	/* gcr */
-	void __iomem *gcr_mem_base;
-	bool has_gcr_regs;
-	spinlock_t gcr_lock;
-
-	/* punit */
-	struct platform_device *punit_dev;
-	unsigned int punit_res_count;
-
-	/* Telemetry */
-	resource_size_t telem_pmc_ssram_base;
-	resource_size_t telem_punit_ssram_base;
-	int telem_pmc_ssram_size;
-	int telem_punit_ssram_size;
-	u8 telem_res_inval;
-	struct platform_device *telemetry_dev;
-} ipcdev;
-
-static char *ipc_err_sources[] = {
-	[IPC_ERR_NONE] =
-		"no error",
-	[IPC_ERR_CMD_NOT_SUPPORTED] =
-		"command not supported",
-	[IPC_ERR_CMD_NOT_SERVICED] =
-		"command not serviced",
-	[IPC_ERR_UNABLE_TO_SERVICE] =
-		"unable to service",
-	[IPC_ERR_CMD_INVALID] =
-		"command invalid",
-	[IPC_ERR_CMD_FAILED] =
-		"command failed",
-	[IPC_ERR_EMSECURITY] =
-		"Invalid Battery",
-	[IPC_ERR_UNSIGNEDKERNEL] =
-		"Unsigned kernel",
-};
-
-/* Prevent concurrent calls to the PMC */
-static DEFINE_MUTEX(ipclock);
-
-static inline void ipc_send_command(u32 cmd)
-{
-	ipcdev.cmd = cmd;
-	if (ipcdev.irq_mode) {
-		reinit_completion(&ipcdev.cmd_complete);
-		cmd |= IPC_CMD_MSI;
-	}
-	writel(cmd, ipcdev.ipc_base + IPC_CMD);
-}
-
-static inline u32 ipc_read_status(void)
-{
-	return readl(ipcdev.ipc_base + IPC_STATUS);
-}
-
-static inline void ipc_data_writel(u32 data, u32 offset)
-{
-	writel(data, ipcdev.ipc_base + IPC_WRITE_BUFFER + offset);
-}
-
-static inline u32 ipc_data_readl(u32 offset)
-{
-	return readl(ipcdev.ipc_base + IPC_READ_BUFFER + offset);
-}
-
-static inline u64 gcr_data_readq(u32 offset)
-{
-	return readq(ipcdev.gcr_mem_base + offset);
-}
-
-static inline int is_gcr_valid(u32 offset)
-{
-	if (!ipcdev.has_gcr_regs)
-		return -EACCES;
-
-	if (offset > PLAT_RESOURCE_GCR_SIZE)
-		return -EINVAL;
-
-	return 0;
-}
-
-/**
- * intel_pmc_gcr_read64() - Read a 64-bit PMC GCR register
- * @offset:	offset of GCR register from GCR address base
- * @data:	data pointer for storing the register output
- *
- * Reads the 64-bit PMC GCR register at given offset.
- *
- * Return:	negative value on error or 0 on success.
- */
-int intel_pmc_gcr_read64(u32 offset, u64 *data)
-{
-	int ret;
-
-	spin_lock(&ipcdev.gcr_lock);
-
-	ret = is_gcr_valid(offset);
-	if (ret < 0) {
-		spin_unlock(&ipcdev.gcr_lock);
-		return ret;
-	}
-
-	*data = readq(ipcdev.gcr_mem_base + offset);
-
-	spin_unlock(&ipcdev.gcr_lock);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(intel_pmc_gcr_read64);
-
-/**
- * intel_pmc_gcr_update() - Update PMC GCR register bits
- * @offset:	offset of GCR register from GCR address base
- * @mask:	bit mask for update operation
- * @val:	update value
- *
- * Updates the bits of given GCR register as specified by
- * @mask and @val.
- *
- * Return:	negative value on error or 0 on success.
- */
-static int intel_pmc_gcr_update(u32 offset, u32 mask, u32 val)
-{
-	u32 new_val;
-	int ret = 0;
-
-	spin_lock(&ipcdev.gcr_lock);
-
-	ret = is_gcr_valid(offset);
-	if (ret < 0)
-		goto gcr_ipc_unlock;
-
-	new_val = readl(ipcdev.gcr_mem_base + offset);
-
-	new_val &= ~mask;
-	new_val |= val & mask;
-
-	writel(new_val, ipcdev.gcr_mem_base + offset);
-
-	new_val = readl(ipcdev.gcr_mem_base + offset);
-
-	/* check whether the bit update is successful */
-	if ((new_val & mask) != (val & mask)) {
-		ret = -EIO;
-		goto gcr_ipc_unlock;
-	}
-
-gcr_ipc_unlock:
-	spin_unlock(&ipcdev.gcr_lock);
-	return ret;
-}
-
-static int update_no_reboot_bit(void *priv, bool set)
-{
-	u32 value = set ? PMC_CFG_NO_REBOOT_EN : PMC_CFG_NO_REBOOT_DIS;
-
-	return intel_pmc_gcr_update(PMC_GCR_PMC_CFG_REG,
-				    PMC_CFG_NO_REBOOT_MASK, value);
-}
-
-static int intel_pmc_ipc_check_status(void)
-{
-	int status;
-	int ret = 0;
-
-	if (ipcdev.irq_mode) {
-		if (0 == wait_for_completion_timeout(
-				&ipcdev.cmd_complete, IPC_MAX_SEC * HZ))
-			ret = -ETIMEDOUT;
-	} else {
-		int loop_count = IPC_LOOP_CNT;
-
-		while ((ipc_read_status() & IPC_STATUS_BUSY) && --loop_count)
-			udelay(1);
-		if (loop_count == 0)
-			ret = -ETIMEDOUT;
-	}
-
-	status = ipc_read_status();
-	if (ret == -ETIMEDOUT) {
-		dev_err(ipcdev.dev,
-			"IPC timed out, TS=0x%x, CMD=0x%x\n",
-			status, ipcdev.cmd);
-		return ret;
-	}
-
-	if (status & IPC_STATUS_ERR) {
-		int i;
-
-		ret = -EIO;
-		i = (status >> IPC_CMD_SIZE) & 0xFF;
-		if (i < ARRAY_SIZE(ipc_err_sources))
-			dev_err(ipcdev.dev,
-				"IPC failed: %s, STS=0x%x, CMD=0x%x\n",
-				ipc_err_sources[i], status, ipcdev.cmd);
-		else
-			dev_err(ipcdev.dev,
-				"IPC failed: unknown, STS=0x%x, CMD=0x%x\n",
-				status, ipcdev.cmd);
-		if ((i == IPC_ERR_UNSIGNEDKERNEL) || (i == IPC_ERR_EMSECURITY))
-			ret = -EACCES;
-	}
-
-	return ret;
-}
-
-/**
- * intel_pmc_ipc_simple_command() - Simple IPC command
- * @cmd:	IPC command code.
- * @sub:	IPC command sub type.
- *
- * Send a simple IPC command to PMC when don't need to specify
- * input/output data and source/dest pointers.
- *
- * Return:	an IPC error code or 0 on success.
- */
-static int intel_pmc_ipc_simple_command(int cmd, int sub)
-{
-	int ret;
-
-	mutex_lock(&ipclock);
-	if (ipcdev.dev == NULL) {
-		mutex_unlock(&ipclock);
-		return -ENODEV;
-	}
-	ipc_send_command(sub << IPC_CMD_SUBCMD | cmd);
-	ret = intel_pmc_ipc_check_status();
-	mutex_unlock(&ipclock);
-
-	return ret;
-}
-
-/**
- * intel_pmc_ipc_raw_cmd() - IPC command with data and pointers
- * @cmd:	IPC command code.
- * @sub:	IPC command sub type.
- * @in:		input data of this IPC command.
- * @inlen:	input data length in bytes.
- * @out:	output data of this IPC command.
- * @outlen:	output data length in dwords.
- * @sptr:	data writing to SPTR register.
- * @dptr:	data writing to DPTR register.
- *
- * Send an IPC command to PMC with input/output data and source/dest pointers.
- *
- * Return:	an IPC error code or 0 on success.
- */
-static int intel_pmc_ipc_raw_cmd(u32 cmd, u32 sub, u8 *in, u32 inlen, u32 *out,
-				 u32 outlen, u32 dptr, u32 sptr)
-{
-	u32 wbuf[4] = { 0 };
-	int ret;
-	int i;
-
-	if (inlen > IPC_DATA_BUFFER_SIZE || outlen > IPC_DATA_BUFFER_SIZE / 4)
-		return -EINVAL;
-
-	mutex_lock(&ipclock);
-	if (ipcdev.dev == NULL) {
-		mutex_unlock(&ipclock);
-		return -ENODEV;
-	}
-	memcpy(wbuf, in, inlen);
-	writel(dptr, ipcdev.ipc_base + IPC_DPTR);
-	writel(sptr, ipcdev.ipc_base + IPC_SPTR);
-	/* The input data register is 32bit register and inlen is in Byte */
-	for (i = 0; i < ((inlen + 3) / 4); i++)
-		ipc_data_writel(wbuf[i], 4 * i);
-	ipc_send_command((inlen << IPC_CMD_SIZE) |
-			(sub << IPC_CMD_SUBCMD) | cmd);
-	ret = intel_pmc_ipc_check_status();
-	if (!ret) {
-		/* out is read from 32bit register and outlen is in 32bit */
-		for (i = 0; i < outlen; i++)
-			*out++ = ipc_data_readl(4 * i);
-	}
-	mutex_unlock(&ipclock);
-
-	return ret;
-}
-
-/**
- * intel_pmc_ipc_command() -  IPC command with input/output data
- * @cmd:	IPC command code.
- * @sub:	IPC command sub type.
- * @in:		input data of this IPC command.
- * @inlen:	input data length in bytes.
- * @out:	output data of this IPC command.
- * @outlen:	output data length in dwords.
- *
- * Send an IPC command to PMC with input/output data.
- *
- * Return:	an IPC error code or 0 on success.
- */
-int intel_pmc_ipc_command(u32 cmd, u32 sub, u8 *in, u32 inlen,
-			  u32 *out, u32 outlen)
-{
-	return intel_pmc_ipc_raw_cmd(cmd, sub, in, inlen, out, outlen, 0, 0);
-}
-EXPORT_SYMBOL_GPL(intel_pmc_ipc_command);
-
-static irqreturn_t ioc(int irq, void *dev_id)
-{
-	int status;
-
-	if (ipcdev.irq_mode) {
-		status = ipc_read_status();
-		writel(status | IPC_STATUS_IRQ, ipcdev.ipc_base + IPC_STATUS);
-	}
-	complete(&ipcdev.cmd_complete);
-
-	return IRQ_HANDLED;
-}
-
-static int ipc_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
-{
-	struct intel_pmc_ipc_dev *pmc = &ipcdev;
-	int ret;
-
-	/* Only one PMC is supported */
-	if (pmc->dev)
-		return -EBUSY;
-
-	pmc->irq_mode = IPC_TRIGGER_MODE_IRQ;
-
-	spin_lock_init(&ipcdev.gcr_lock);
-
-	ret = pcim_enable_device(pdev);
-	if (ret)
-		return ret;
-
-	ret = pcim_iomap_regions(pdev, 1 << 0, pci_name(pdev));
-	if (ret)
-		return ret;
-
-	init_completion(&pmc->cmd_complete);
-
-	pmc->ipc_base = pcim_iomap_table(pdev)[0];
-
-	ret = devm_request_irq(&pdev->dev, pdev->irq, ioc, 0, "intel_pmc_ipc",
-				pmc);
-	if (ret) {
-		dev_err(&pdev->dev, "Failed to request irq\n");
-		return ret;
-	}
-
-	pmc->dev = &pdev->dev;
-
-	pci_set_drvdata(pdev, pmc);
-
-	return 0;
-}
-
-static const struct pci_device_id ipc_pci_ids[] = {
-	{PCI_VDEVICE(INTEL, 0x0a94), 0},
-	{PCI_VDEVICE(INTEL, 0x1a94), 0},
-	{PCI_VDEVICE(INTEL, 0x5a94), 0},
-	{ 0,}
-};
-MODULE_DEVICE_TABLE(pci, ipc_pci_ids);
-
-static struct pci_driver ipc_pci_driver = {
-	.name = "intel_pmc_ipc",
-	.id_table = ipc_pci_ids,
-	.probe = ipc_pci_probe,
-};
-
-static ssize_t intel_pmc_ipc_simple_cmd_store(struct device *dev,
-					      struct device_attribute *attr,
-					      const char *buf, size_t count)
-{
-	int subcmd;
-	int cmd;
-	int ret;
-
-	ret = sscanf(buf, "%d %d", &cmd, &subcmd);
-	if (ret != 2) {
-		dev_err(dev, "Error args\n");
-		return -EINVAL;
-	}
-
-	ret = intel_pmc_ipc_simple_command(cmd, subcmd);
-	if (ret) {
-		dev_err(dev, "command %d error with %d\n", cmd, ret);
-		return ret;
-	}
-	return (ssize_t)count;
-}
-static DEVICE_ATTR(simplecmd, 0200, NULL, intel_pmc_ipc_simple_cmd_store);
-
-static ssize_t intel_pmc_ipc_northpeak_store(struct device *dev,
-					     struct device_attribute *attr,
-					     const char *buf, size_t count)
-{
-	unsigned long val;
-	int subcmd;
-	int ret;
-
-	ret = kstrtoul(buf, 0, &val);
-	if (ret)
-		return ret;
-
-	if (val)
-		subcmd = 1;
-	else
-		subcmd = 0;
-	ret = intel_pmc_ipc_simple_command(PMC_IPC_NORTHPEAK_CTRL, subcmd);
-	if (ret) {
-		dev_err(dev, "command north %d error with %d\n", subcmd, ret);
-		return ret;
-	}
-	return (ssize_t)count;
-}
-static DEVICE_ATTR(northpeak, 0200, NULL, intel_pmc_ipc_northpeak_store);
-
-static struct attribute *intel_ipc_attrs[] = {
-	&dev_attr_northpeak.attr,
-	&dev_attr_simplecmd.attr,
-	NULL
-};
-
-static const struct attribute_group intel_ipc_group = {
-	.attrs = intel_ipc_attrs,
-};
-
-static const struct attribute_group *intel_ipc_groups[] = {
-	&intel_ipc_group,
-	NULL
-};
-
-static struct resource punit_res_array[] = {
-	/* Punit BIOS */
-	{
-		.flags = IORESOURCE_MEM,
-	},
-	{
-		.flags = IORESOURCE_MEM,
-	},
-	/* Punit ISP */
-	{
-		.flags = IORESOURCE_MEM,
-	},
-	{
-		.flags = IORESOURCE_MEM,
-	},
-	/* Punit GTD */
-	{
-		.flags = IORESOURCE_MEM,
-	},
-	{
-		.flags = IORESOURCE_MEM,
-	},
-};
-
-#define TCO_RESOURCE_ACPI_IO		0
-#define TCO_RESOURCE_SMI_EN_IO		1
-#define TCO_RESOURCE_GCR_MEM		2
-static struct resource tco_res[] = {
-	/* ACPI - TCO */
-	{
-		.flags = IORESOURCE_IO,
-	},
-	/* ACPI - SMI */
-	{
-		.flags = IORESOURCE_IO,
-	},
-};
-
-static struct itco_wdt_platform_data tco_info = {
-	.name = "Apollo Lake SoC",
-	.version = 5,
-	.no_reboot_priv = &ipcdev,
-	.update_no_reboot_bit = update_no_reboot_bit,
-};
-
-#define TELEMETRY_RESOURCE_PUNIT_SSRAM	0
-#define TELEMETRY_RESOURCE_PMC_SSRAM	1
-static struct resource telemetry_res[] = {
-	/*Telemetry*/
-	{
-		.flags = IORESOURCE_MEM,
-	},
-	{
-		.flags = IORESOURCE_MEM,
-	},
-};
-
-static int ipc_create_punit_device(void)
-{
-	struct platform_device *pdev;
-	const struct platform_device_info pdevinfo = {
-		.parent = ipcdev.dev,
-		.name = PUNIT_DEVICE_NAME,
-		.id = -1,
-		.res = punit_res_array,
-		.num_res = ipcdev.punit_res_count,
-		};
-
-	pdev = platform_device_register_full(&pdevinfo);
-	if (IS_ERR(pdev))
-		return PTR_ERR(pdev);
-
-	ipcdev.punit_dev = pdev;
-
-	return 0;
-}
-
-static int ipc_create_tco_device(void)
-{
-	struct platform_device *pdev;
-	struct resource *res;
-	const struct platform_device_info pdevinfo = {
-		.parent = ipcdev.dev,
-		.name = TCO_DEVICE_NAME,
-		.id = -1,
-		.res = tco_res,
-		.num_res = ARRAY_SIZE(tco_res),
-		.data = &tco_info,
-		.size_data = sizeof(tco_info),
-		};
-
-	res = tco_res + TCO_RESOURCE_ACPI_IO;
-	res->start = ipcdev.acpi_io_base + TCO_BASE_OFFSET;
-	res->end = res->start + TCO_REGS_SIZE - 1;
-
-	res = tco_res + TCO_RESOURCE_SMI_EN_IO;
-	res->start = ipcdev.acpi_io_base + SMI_EN_OFFSET;
-	res->end = res->start + SMI_EN_SIZE - 1;
-
-	pdev = platform_device_register_full(&pdevinfo);
-	if (IS_ERR(pdev))
-		return PTR_ERR(pdev);
-
-	ipcdev.tco_dev = pdev;
-
-	return 0;
-}
-
-static int ipc_create_telemetry_device(void)
-{
-	struct platform_device *pdev;
-	struct resource *res;
-	const struct platform_device_info pdevinfo = {
-		.parent = ipcdev.dev,
-		.name = TELEMETRY_DEVICE_NAME,
-		.id = -1,
-		.res = telemetry_res,
-		.num_res = ARRAY_SIZE(telemetry_res),
-		};
-
-	res = telemetry_res + TELEMETRY_RESOURCE_PUNIT_SSRAM;
-	res->start = ipcdev.telem_punit_ssram_base;
-	res->end = res->start + ipcdev.telem_punit_ssram_size - 1;
-
-	res = telemetry_res + TELEMETRY_RESOURCE_PMC_SSRAM;
-	res->start = ipcdev.telem_pmc_ssram_base;
-	res->end = res->start + ipcdev.telem_pmc_ssram_size - 1;
-
-	pdev = platform_device_register_full(&pdevinfo);
-	if (IS_ERR(pdev))
-		return PTR_ERR(pdev);
-
-	ipcdev.telemetry_dev = pdev;
-
-	return 0;
-}
-
-static int ipc_create_pmc_devices(void)
-{
-	int ret;
-
-	/* If we have ACPI based watchdog use that instead */
-	if (!acpi_has_watchdog()) {
-		ret = ipc_create_tco_device();
-		if (ret) {
-			dev_err(ipcdev.dev, "Failed to add tco platform device\n");
-			return ret;
-		}
-	}
-
-	ret = ipc_create_punit_device();
-	if (ret) {
-		dev_err(ipcdev.dev, "Failed to add punit platform device\n");
-		platform_device_unregister(ipcdev.tco_dev);
-		return ret;
-	}
-
-	if (!ipcdev.telem_res_inval) {
-		ret = ipc_create_telemetry_device();
-		if (ret) {
-			dev_warn(ipcdev.dev,
-				"Failed to add telemetry platform device\n");
-			platform_device_unregister(ipcdev.punit_dev);
-			platform_device_unregister(ipcdev.tco_dev);
-		}
-	}
-
-	return ret;
-}
-
-static int ipc_plat_get_res(struct platform_device *pdev)
-{
-	struct resource *res, *punit_res = punit_res_array;
-	void __iomem *addr;
-	int size;
-
-	res = platform_get_resource(pdev, IORESOURCE_IO,
-				    PLAT_RESOURCE_ACPI_IO_INDEX);
-	if (!res) {
-		dev_err(&pdev->dev, "Failed to get io resource\n");
-		return -ENXIO;
-	}
-	size = resource_size(res);
-	ipcdev.acpi_io_base = res->start;
-	ipcdev.acpi_io_size = size;
-	dev_info(&pdev->dev, "io res: %pR\n", res);
-
-	ipcdev.punit_res_count = 0;
-
-	/* This is index 0 to cover BIOS data register */
-	res = platform_get_resource(pdev, IORESOURCE_MEM,
-				    PLAT_RESOURCE_BIOS_DATA_INDEX);
-	if (!res) {
-		dev_err(&pdev->dev, "Failed to get res of punit BIOS data\n");
-		return -ENXIO;
-	}
-	punit_res[ipcdev.punit_res_count++] = *res;
-	dev_info(&pdev->dev, "punit BIOS data res: %pR\n", res);
-
-	/* This is index 1 to cover BIOS interface register */
-	res = platform_get_resource(pdev, IORESOURCE_MEM,
-				    PLAT_RESOURCE_BIOS_IFACE_INDEX);
-	if (!res) {
-		dev_err(&pdev->dev, "Failed to get res of punit BIOS iface\n");
-		return -ENXIO;
-	}
-	punit_res[ipcdev.punit_res_count++] = *res;
-	dev_info(&pdev->dev, "punit BIOS interface res: %pR\n", res);
-
-	/* This is index 2 to cover ISP data register, optional */
-	res = platform_get_resource(pdev, IORESOURCE_MEM,
-				    PLAT_RESOURCE_ISP_DATA_INDEX);
-	if (res) {
-		punit_res[ipcdev.punit_res_count++] = *res;
-		dev_info(&pdev->dev, "punit ISP data res: %pR\n", res);
-	}
-
-	/* This is index 3 to cover ISP interface register, optional */
-	res = platform_get_resource(pdev, IORESOURCE_MEM,
-				    PLAT_RESOURCE_ISP_IFACE_INDEX);
-	if (res) {
-		punit_res[ipcdev.punit_res_count++] = *res;
-		dev_info(&pdev->dev, "punit ISP interface res: %pR\n", res);
-	}
-
-	/* This is index 4 to cover GTD data register, optional */
-	res = platform_get_resource(pdev, IORESOURCE_MEM,
-				    PLAT_RESOURCE_GTD_DATA_INDEX);
-	if (res) {
-		punit_res[ipcdev.punit_res_count++] = *res;
-		dev_info(&pdev->dev, "punit GTD data res: %pR\n", res);
-	}
-
-	/* This is index 5 to cover GTD interface register, optional */
-	res = platform_get_resource(pdev, IORESOURCE_MEM,
-				    PLAT_RESOURCE_GTD_IFACE_INDEX);
-	if (res) {
-		punit_res[ipcdev.punit_res_count++] = *res;
-		dev_info(&pdev->dev, "punit GTD interface res: %pR\n", res);
-	}
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM,
-				    PLAT_RESOURCE_IPC_INDEX);
-	if (!res) {
-		dev_err(&pdev->dev, "Failed to get ipc resource\n");
-		return -ENXIO;
-	}
-	size = PLAT_RESOURCE_IPC_SIZE + PLAT_RESOURCE_GCR_SIZE;
-	res->end = res->start + size - 1;
-
-	addr = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(addr))
-		return PTR_ERR(addr);
-
-	ipcdev.ipc_base = addr;
-
-	ipcdev.gcr_mem_base = addr + PLAT_RESOURCE_GCR_OFFSET;
-	dev_info(&pdev->dev, "ipc res: %pR\n", res);
-
-	ipcdev.telem_res_inval = 0;
-	res = platform_get_resource(pdev, IORESOURCE_MEM,
-				    PLAT_RESOURCE_TELEM_SSRAM_INDEX);
-	if (!res) {
-		dev_err(&pdev->dev, "Failed to get telemetry ssram resource\n");
-		ipcdev.telem_res_inval = 1;
-	} else {
-		ipcdev.telem_punit_ssram_base = res->start +
-						TELEM_PUNIT_SSRAM_OFFSET;
-		ipcdev.telem_punit_ssram_size = TELEM_SSRAM_SIZE;
-		ipcdev.telem_pmc_ssram_base = res->start +
-						TELEM_PMC_SSRAM_OFFSET;
-		ipcdev.telem_pmc_ssram_size = TELEM_SSRAM_SIZE;
-		dev_info(&pdev->dev, "telemetry ssram res: %pR\n", res);
-	}
-
-	return 0;
-}
-
-/**
- * intel_pmc_s0ix_counter_read() - Read S0ix residency.
- * @data: Out param that contains current S0ix residency count.
- *
- * Return: an error code or 0 on success.
- */
-int intel_pmc_s0ix_counter_read(u64 *data)
-{
-	u64 deep, shlw;
-
-	if (!ipcdev.has_gcr_regs)
-		return -EACCES;
-
-	deep = gcr_data_readq(PMC_GCR_TELEM_DEEP_S0IX_REG);
-	shlw = gcr_data_readq(PMC_GCR_TELEM_SHLW_S0IX_REG);
-
-	*data = S0IX_RESIDENCY_IN_USECS(deep, shlw);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(intel_pmc_s0ix_counter_read);
-
-#ifdef CONFIG_ACPI
-static const struct acpi_device_id ipc_acpi_ids[] = {
-	{ "INT34D2", 0},
-	{ }
-};
-MODULE_DEVICE_TABLE(acpi, ipc_acpi_ids);
-#endif
-
-static int ipc_plat_probe(struct platform_device *pdev)
-{
-	int ret;
-
-	ipcdev.dev = &pdev->dev;
-	ipcdev.irq_mode = IPC_TRIGGER_MODE_IRQ;
-	init_completion(&ipcdev.cmd_complete);
-	spin_lock_init(&ipcdev.gcr_lock);
-
-	ipcdev.irq = platform_get_irq(pdev, 0);
-	if (ipcdev.irq < 0)
-		return -EINVAL;
-
-	ret = ipc_plat_get_res(pdev);
-	if (ret) {
-		dev_err(&pdev->dev, "Failed to request resource\n");
-		return ret;
-	}
-
-	ret = ipc_create_pmc_devices();
-	if (ret) {
-		dev_err(&pdev->dev, "Failed to create pmc devices\n");
-		return ret;
-	}
-
-	if (devm_request_irq(&pdev->dev, ipcdev.irq, ioc, IRQF_NO_SUSPEND,
-			     "intel_pmc_ipc", &ipcdev)) {
-		dev_err(&pdev->dev, "Failed to request irq\n");
-		ret = -EBUSY;
-		goto err_irq;
-	}
-
-	ipcdev.has_gcr_regs = true;
-
-	return 0;
-
-err_irq:
-	platform_device_unregister(ipcdev.tco_dev);
-	platform_device_unregister(ipcdev.punit_dev);
-	platform_device_unregister(ipcdev.telemetry_dev);
-
-	return ret;
-}
-
-static int ipc_plat_remove(struct platform_device *pdev)
-{
-	devm_free_irq(&pdev->dev, ipcdev.irq, &ipcdev);
-	platform_device_unregister(ipcdev.tco_dev);
-	platform_device_unregister(ipcdev.punit_dev);
-	platform_device_unregister(ipcdev.telemetry_dev);
-	ipcdev.dev = NULL;
-	return 0;
-}
-
-static struct platform_driver ipc_plat_driver = {
-	.remove = ipc_plat_remove,
-	.probe = ipc_plat_probe,
-	.driver = {
-		.name = "pmc-ipc-plat",
-		.acpi_match_table = ACPI_PTR(ipc_acpi_ids),
-		.dev_groups = intel_ipc_groups,
-	},
-};
-
-static int __init intel_pmc_ipc_init(void)
-{
-	int ret;
-
-	ret = platform_driver_register(&ipc_plat_driver);
-	if (ret) {
-		pr_err("Failed to register PMC ipc platform driver\n");
-		return ret;
-	}
-	ret = pci_register_driver(&ipc_pci_driver);
-	if (ret) {
-		pr_err("Failed to register PMC ipc pci driver\n");
-		platform_driver_unregister(&ipc_plat_driver);
-		return ret;
-	}
-	return ret;
-}
-
-static void __exit intel_pmc_ipc_exit(void)
-{
-	pci_unregister_driver(&ipc_pci_driver);
-	platform_driver_unregister(&ipc_plat_driver);
-}
-
-MODULE_AUTHOR("Zha Qipeng <qipeng.zha@intel.com>");
-MODULE_DESCRIPTION("Intel PMC IPC driver");
-MODULE_LICENSE("GPL v2");
-
-/* Some modules are dependent on this, so init earlier */
-fs_initcall(intel_pmc_ipc_init);
-module_exit(intel_pmc_ipc_exit);
diff --git a/drivers/platform/x86/intel_scu_ipc.c b/drivers/platform/x86/intel_scu_ipc.c
index 3d7da5266136..d9cf7f7602b0 100644
--- a/drivers/platform/x86/intel_scu_ipc.c
+++ b/drivers/platform/x86/intel_scu_ipc.c
@@ -18,11 +18,10 @@
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
-#include <linux/pci.h>
-#include <linux/pm.h>
-#include <linux/sfi.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/slab.h>
 
-#include <asm/intel-mid.h>
 #include <asm/intel_scu_ipc.h>
 
 /* IPC defines the following message types */
@@ -55,14 +54,14 @@
 #define IPC_IOC	          0x100		/* IPC command register IOC bit */
 
 struct intel_scu_ipc_dev {
-	struct device *dev;
+	struct device dev;
+	struct resource mem;
+	struct module *owner;
+	int irq;
 	void __iomem *ipc_base;
 	struct completion cmd_complete;
-	u8 irq_mode;
 };
 
-static struct intel_scu_ipc_dev  ipcdev; /* Only one for now */
-
 #define IPC_STATUS		0x04
 #define IPC_STATUS_IRQ		BIT(2)
 #define IPC_STATUS_ERR		BIT(1)
@@ -78,8 +77,110 @@ static struct intel_scu_ipc_dev  ipcdev; /* Only one for now */
 /* Timeout in jiffies */
 #define IPC_TIMEOUT		(3 * HZ)
 
+static struct intel_scu_ipc_dev *ipcdev; /* Only one for now */
 static DEFINE_MUTEX(ipclock); /* lock used to prevent multiple call to SCU */
 
+static struct class intel_scu_ipc_class = {
+	.name = "intel_scu_ipc",
+	.owner = THIS_MODULE,
+};
+
+/**
+ * intel_scu_ipc_dev_get() - Get SCU IPC instance
+ *
+ * The recommended new API takes SCU IPC instance as parameter and this
+ * function can be called by driver to get the instance. This also makes
+ * sure the driver providing the IPC functionality cannot be unloaded
+ * while the caller has the instance.
+ *
+ * Call intel_scu_ipc_dev_put() to release the instance.
+ *
+ * Returns %NULL if SCU IPC is not currently available.
+ */
+struct intel_scu_ipc_dev *intel_scu_ipc_dev_get(void)
+{
+	struct intel_scu_ipc_dev *scu = NULL;
+
+	mutex_lock(&ipclock);
+	if (ipcdev) {
+		get_device(&ipcdev->dev);
+		/*
+		 * Prevent the IPC provider from being unloaded while it
+		 * is being used.
+		 */
+		if (!try_module_get(ipcdev->owner))
+			put_device(&ipcdev->dev);
+		else
+			scu = ipcdev;
+	}
+
+	mutex_unlock(&ipclock);
+	return scu;
+}
+EXPORT_SYMBOL_GPL(intel_scu_ipc_dev_get);
+
+/**
+ * intel_scu_ipc_dev_put() - Put SCU IPC instance
+ * @scu: SCU IPC instance
+ *
+ * This function releases the SCU IPC instance retrieved from
+ * intel_scu_ipc_dev_get() and allows the driver providing IPC to be
+ * unloaded.
+ */
+void intel_scu_ipc_dev_put(struct intel_scu_ipc_dev *scu)
+{
+	if (scu) {
+		module_put(scu->owner);
+		put_device(&scu->dev);
+	}
+}
+EXPORT_SYMBOL_GPL(intel_scu_ipc_dev_put);
+
+struct intel_scu_ipc_devres {
+	struct intel_scu_ipc_dev *scu;
+};
+
+static void devm_intel_scu_ipc_dev_release(struct device *dev, void *res)
+{
+	struct intel_scu_ipc_devres *dr = res;
+	struct intel_scu_ipc_dev *scu = dr->scu;
+
+	intel_scu_ipc_dev_put(scu);
+}
+
+/**
+ * devm_intel_scu_ipc_dev_get() - Allocate managed SCU IPC device
+ * @dev: Device requesting the SCU IPC device
+ *
+ * The recommended new API takes SCU IPC instance as parameter and this
+ * function can be called by driver to get the instance. This also makes
+ * sure the driver providing the IPC functionality cannot be unloaded
+ * while the caller has the instance.
+ *
+ * Returns %NULL if SCU IPC is not currently available.
+ */
+struct intel_scu_ipc_dev *devm_intel_scu_ipc_dev_get(struct device *dev)
+{
+	struct intel_scu_ipc_devres *dr;
+	struct intel_scu_ipc_dev *scu;
+
+	dr = devres_alloc(devm_intel_scu_ipc_dev_release, sizeof(*dr), GFP_KERNEL);
+	if (!dr)
+		return NULL;
+
+	scu = intel_scu_ipc_dev_get();
+	if (!scu) {
+		devres_free(dr);
+		return NULL;
+	}
+
+	dr->scu = scu;
+	devres_add(dev, dr);
+
+	return scu;
+}
+EXPORT_SYMBOL_GPL(devm_intel_scu_ipc_dev_get);
+
 /*
  * Send ipc command
  * Command Register (Write Only):
@@ -143,7 +244,6 @@ static inline int busy_loop(struct intel_scu_ipc_dev *scu)
 		usleep_range(50, 100);
 	} while (time_before(jiffies, end));
 
-	dev_err(scu->dev, "IPC timed out");
 	return -ETIMEDOUT;
 }
 
@@ -152,10 +252,8 @@ static inline int ipc_wait_for_interrupt(struct intel_scu_ipc_dev *scu)
 {
 	int status;
 
-	if (!wait_for_completion_timeout(&scu->cmd_complete, IPC_TIMEOUT)) {
-		dev_err(scu->dev, "IPC timed out\n");
+	if (!wait_for_completion_timeout(&scu->cmd_complete, IPC_TIMEOUT))
 		return -ETIMEDOUT;
-	}
 
 	status = ipc_read_status(scu);
 	if (status & IPC_STATUS_ERR)
@@ -166,13 +264,13 @@ static inline int ipc_wait_for_interrupt(struct intel_scu_ipc_dev *scu)
 
 static int intel_scu_ipc_check_status(struct intel_scu_ipc_dev *scu)
 {
-	return scu->irq_mode ? ipc_wait_for_interrupt(scu) : busy_loop(scu);
+	return scu->irq > 0 ? ipc_wait_for_interrupt(scu) : busy_loop(scu);
 }
 
 /* Read/Write power control(PMIC in Langwell, MSIC in PenWell) registers */
-static int pwr_reg_rdwr(u16 *addr, u8 *data, u32 count, u32 op, u32 id)
+static int pwr_reg_rdwr(struct intel_scu_ipc_dev *scu, u16 *addr, u8 *data,
+			u32 count, u32 op, u32 id)
 {
-	struct intel_scu_ipc_dev *scu = &ipcdev;
 	int nc;
 	u32 offset = 0;
 	int err;
@@ -182,8 +280,9 @@ static int pwr_reg_rdwr(u16 *addr, u8 *data, u32 count, u32 op, u32 id)
 	memset(cbuf, 0, sizeof(cbuf));
 
 	mutex_lock(&ipclock);
-
-	if (scu->dev == NULL) {
+	if (!scu)
+		scu = ipcdev;
+	if (!scu) {
 		mutex_unlock(&ipclock);
 		return -ENODEV;
 	}
@@ -222,7 +321,8 @@ static int pwr_reg_rdwr(u16 *addr, u8 *data, u32 count, u32 op, u32 id)
 }
 
 /**
- * intel_scu_ipc_ioread8		-	read a word via the SCU
+ * intel_scu_ipc_dev_ioread8() - Read a byte via the SCU
+ * @scu: Optional SCU IPC instance
  * @addr: Register on SCU
  * @data: Return pointer for read byte
  *
@@ -231,14 +331,15 @@ static int pwr_reg_rdwr(u16 *addr, u8 *data, u32 count, u32 op, u32 id)
  *
  * This function may sleep.
  */
-int intel_scu_ipc_ioread8(u16 addr, u8 *data)
+int intel_scu_ipc_dev_ioread8(struct intel_scu_ipc_dev *scu, u16 addr, u8 *data)
 {
-	return pwr_reg_rdwr(&addr, data, 1, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_R);
+	return pwr_reg_rdwr(scu, &addr, data, 1, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_R);
 }
-EXPORT_SYMBOL(intel_scu_ipc_ioread8);
+EXPORT_SYMBOL(intel_scu_ipc_dev_ioread8);
 
 /**
- * intel_scu_ipc_iowrite8		-	write a byte via the SCU
+ * intel_scu_ipc_dev_iowrite8() - Write a byte via the SCU
+ * @scu: Optional SCU IPC instance
  * @addr: Register on SCU
  * @data: Byte to write
  *
@@ -247,14 +348,15 @@ EXPORT_SYMBOL(intel_scu_ipc_ioread8);
  *
  * This function may sleep.
  */
-int intel_scu_ipc_iowrite8(u16 addr, u8 data)
+int intel_scu_ipc_dev_iowrite8(struct intel_scu_ipc_dev *scu, u16 addr, u8 data)
 {
-	return pwr_reg_rdwr(&addr, &data, 1, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_W);
+	return pwr_reg_rdwr(scu, &addr, &data, 1, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_W);
 }
-EXPORT_SYMBOL(intel_scu_ipc_iowrite8);
+EXPORT_SYMBOL(intel_scu_ipc_dev_iowrite8);
 
 /**
- * intel_scu_ipc_readvv		-	read a set of registers
+ * intel_scu_ipc_dev_readv() - Read a set of registers
+ * @scu: Optional SCU IPC instance
  * @addr: Register list
  * @data: Bytes to return
  * @len: Length of array
@@ -266,14 +368,16 @@ EXPORT_SYMBOL(intel_scu_ipc_iowrite8);
  *
  * This function may sleep.
  */
-int intel_scu_ipc_readv(u16 *addr, u8 *data, int len)
+int intel_scu_ipc_dev_readv(struct intel_scu_ipc_dev *scu, u16 *addr, u8 *data,
+			    size_t len)
 {
-	return pwr_reg_rdwr(addr, data, len, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_R);
+	return pwr_reg_rdwr(scu, addr, data, len, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_R);
 }
-EXPORT_SYMBOL(intel_scu_ipc_readv);
+EXPORT_SYMBOL(intel_scu_ipc_dev_readv);
 
 /**
- * intel_scu_ipc_writev		-	write a set of registers
+ * intel_scu_ipc_dev_writev() - Write a set of registers
+ * @scu: Optional SCU IPC instance
  * @addr: Register list
  * @data: Bytes to write
  * @len: Length of array
@@ -285,16 +389,18 @@ EXPORT_SYMBOL(intel_scu_ipc_readv);
  *
  * This function may sleep.
  */
-int intel_scu_ipc_writev(u16 *addr, u8 *data, int len)
+int intel_scu_ipc_dev_writev(struct intel_scu_ipc_dev *scu, u16 *addr, u8 *data,
+			     size_t len)
 {
-	return pwr_reg_rdwr(addr, data, len, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_W);
+	return pwr_reg_rdwr(scu, addr, data, len, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_W);
 }
-EXPORT_SYMBOL(intel_scu_ipc_writev);
+EXPORT_SYMBOL(intel_scu_ipc_dev_writev);
 
 /**
- * intel_scu_ipc_update_register	-	r/m/w a register
+ * intel_scu_ipc_dev_update() - Update a register
+ * @scu: Optional SCU IPC instance
  * @addr: Register address
- * @bits: Bits to update
+ * @data: Bits to update
  * @mask: Mask of bits to update
  *
  * Read-modify-write power control unit register. The first data argument
@@ -305,15 +411,17 @@ EXPORT_SYMBOL(intel_scu_ipc_writev);
  * This function may sleep. Locking between SCU accesses is handled
  * for the caller.
  */
-int intel_scu_ipc_update_register(u16 addr, u8 bits, u8 mask)
+int intel_scu_ipc_dev_update(struct intel_scu_ipc_dev *scu, u16 addr, u8 data,
+			     u8 mask)
 {
-	u8 data[2] = { bits, mask };
-	return pwr_reg_rdwr(&addr, data, 1, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_M);
+	u8 tmp[2] = { data, mask };
+	return pwr_reg_rdwr(scu, &addr, tmp, 1, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_M);
 }
-EXPORT_SYMBOL(intel_scu_ipc_update_register);
+EXPORT_SYMBOL(intel_scu_ipc_dev_update);
 
 /**
- * intel_scu_ipc_simple_command	-	send a simple command
+ * intel_scu_ipc_dev_simple_command() - Send a simple command
+ * @scu: Optional SCU IPC instance
  * @cmd: Command
  * @sub: Sub type
  *
@@ -324,62 +432,89 @@ EXPORT_SYMBOL(intel_scu_ipc_update_register);
  * This function may sleep. Locking for SCU accesses is handled for the
  * caller.
  */
-int intel_scu_ipc_simple_command(int cmd, int sub)
+int intel_scu_ipc_dev_simple_command(struct intel_scu_ipc_dev *scu, int cmd,
+				     int sub)
 {
-	struct intel_scu_ipc_dev *scu = &ipcdev;
+	u32 cmdval;
 	int err;
 
 	mutex_lock(&ipclock);
-	if (scu->dev == NULL) {
+	if (!scu)
+		scu = ipcdev;
+	if (!scu) {
 		mutex_unlock(&ipclock);
 		return -ENODEV;
 	}
-	ipc_command(scu, sub << 12 | cmd);
+	scu = ipcdev;
+	cmdval = sub << 12 | cmd;
+	ipc_command(scu, cmdval);
 	err = intel_scu_ipc_check_status(scu);
 	mutex_unlock(&ipclock);
+	if (err)
+		dev_err(&scu->dev, "IPC command %#x failed with %d\n", cmdval, err);
 	return err;
 }
-EXPORT_SYMBOL(intel_scu_ipc_simple_command);
+EXPORT_SYMBOL(intel_scu_ipc_dev_simple_command);
 
 /**
- * intel_scu_ipc_command	-	command with data
+ * intel_scu_ipc_command_with_size() - Command with data
+ * @scu: Optional SCU IPC instance
  * @cmd: Command
  * @sub: Sub type
  * @in: Input data
- * @inlen: Input length in dwords
+ * @inlen: Input length in bytes
+ * @size: Input size written to the IPC command register in whatever
+ *	  units (dword, byte) the particular firmware requires. Normally
+ *	  should be the same as @inlen.
  * @out: Output data
- * @outlen: Output length in dwords
+ * @outlen: Output length in bytes
  *
  * Issue a command to the SCU which involves data transfers. Do the
  * data copies under the lock but leave it for the caller to interpret.
  */
-int intel_scu_ipc_command(int cmd, int sub, u32 *in, int inlen,
-			  u32 *out, int outlen)
+int intel_scu_ipc_dev_command_with_size(struct intel_scu_ipc_dev *scu, int cmd,
+					int sub, const void *in, size_t inlen,
+					size_t size, void *out, size_t outlen)
 {
-	struct intel_scu_ipc_dev *scu = &ipcdev;
+	size_t outbuflen = DIV_ROUND_UP(outlen, sizeof(u32));
+	size_t inbuflen = DIV_ROUND_UP(inlen, sizeof(u32));
+	u32 cmdval, inbuf[4] = {};
 	int i, err;
 
+	if (inbuflen > 4 || outbuflen > 4)
+		return -EINVAL;
+
 	mutex_lock(&ipclock);
-	if (scu->dev == NULL) {
+	if (!scu)
+		scu = ipcdev;
+	if (!scu) {
 		mutex_unlock(&ipclock);
 		return -ENODEV;
 	}
 
-	for (i = 0; i < inlen; i++)
-		ipc_data_writel(scu, *in++, 4 * i);
+	memcpy(inbuf, in, inlen);
+	for (i = 0; i < inbuflen; i++)
+		ipc_data_writel(scu, inbuf[i], 4 * i);
 
-	ipc_command(scu, (inlen << 16) | (sub << 12) | cmd);
+	cmdval = (size << 16) | (sub << 12) | cmd;
+	ipc_command(scu, cmdval);
 	err = intel_scu_ipc_check_status(scu);
 
 	if (!err) {
-		for (i = 0; i < outlen; i++)
-			*out++ = ipc_data_readl(scu, 4 * i);
+		u32 outbuf[4] = {};
+
+		for (i = 0; i < outbuflen; i++)
+			outbuf[i] = ipc_data_readl(scu, 4 * i);
+
+		memcpy(out, outbuf, outlen);
 	}
 
 	mutex_unlock(&ipclock);
+	if (err)
+		dev_err(&scu->dev, "IPC command %#x failed with %d\n", cmdval, err);
 	return err;
 }
-EXPORT_SYMBOL(intel_scu_ipc_command);
+EXPORT_SYMBOL(intel_scu_ipc_dev_command_with_size);
 
 /*
  * Interrupt handler gets called when ioc bit of IPC_COMMAND_REG set to 1
@@ -399,61 +534,179 @@ static irqreturn_t ioc(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
+static void intel_scu_ipc_release(struct device *dev)
+{
+	struct intel_scu_ipc_dev *scu;
+
+	scu = container_of(dev, struct intel_scu_ipc_dev, dev);
+	if (scu->irq > 0)
+		free_irq(scu->irq, scu);
+	iounmap(scu->ipc_base);
+	release_mem_region(scu->mem.start, resource_size(&scu->mem));
+	kfree(scu);
+}
+
 /**
- *	ipc_probe	-	probe an Intel SCU IPC
- *	@pdev: the PCI device matching
- *	@id: entry in the match table
+ * __intel_scu_ipc_register() - Register SCU IPC device
+ * @parent: Parent device
+ * @scu_data: Data used to configure SCU IPC
+ * @owner: Module registering the SCU IPC device
  *
- *	Enable and install an intel SCU IPC. This appears in the PCI space
- *	but uses some hard coded addresses as well.
+ * Call this function to register SCU IPC mechanism under @parent.
+ * Returns pointer to the new SCU IPC device or ERR_PTR() in case of
+ * failure. The caller may use the returned instance if it needs to do
+ * SCU IPC calls itself.
  */
-static int ipc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+struct intel_scu_ipc_dev *
+__intel_scu_ipc_register(struct device *parent,
+			 const struct intel_scu_ipc_data *scu_data,
+			 struct module *owner)
 {
 	int err;
-	struct intel_scu_ipc_dev *scu = &ipcdev;
+	struct intel_scu_ipc_dev *scu;
+	void __iomem *ipc_base;
 
-	if (scu->dev)		/* We support only one SCU */
-		return -EBUSY;
+	mutex_lock(&ipclock);
+	/* We support only one IPC */
+	if (ipcdev) {
+		err = -EBUSY;
+		goto err_unlock;
+	}
 
-	err = pcim_enable_device(pdev);
-	if (err)
-		return err;
+	scu = kzalloc(sizeof(*scu), GFP_KERNEL);
+	if (!scu) {
+		err = -ENOMEM;
+		goto err_unlock;
+	}
 
-	err = pcim_iomap_regions(pdev, 1 << 0, pci_name(pdev));
-	if (err)
-		return err;
+	scu->owner = owner;
+	scu->dev.parent = parent;
+	scu->dev.class = &intel_scu_ipc_class;
+	scu->dev.release = intel_scu_ipc_release;
+	dev_set_name(&scu->dev, "intel_scu_ipc");
+
+	if (!request_mem_region(scu_data->mem.start, resource_size(&scu_data->mem),
+				"intel_scu_ipc")) {
+		err = -EBUSY;
+		goto err_free;
+	}
 
+	ipc_base = ioremap(scu_data->mem.start, resource_size(&scu_data->mem));
+	if (!ipc_base) {
+		err = -ENOMEM;
+		goto err_release;
+	}
+
+	scu->ipc_base = ipc_base;
+	scu->mem = scu_data->mem;
+	scu->irq = scu_data->irq;
 	init_completion(&scu->cmd_complete);
 
-	scu->ipc_base = pcim_iomap_table(pdev)[0];
+	if (scu->irq > 0) {
+		err = request_irq(scu->irq, ioc, 0, "intel_scu_ipc", scu);
+		if (err)
+			goto err_unmap;
+	}
 
-	err = devm_request_irq(&pdev->dev, pdev->irq, ioc, 0, "intel_scu_ipc",
-			       scu);
-	if (err)
-		return err;
+	/*
+	 * After this point intel_scu_ipc_release() takes care of
+	 * releasing the SCU IPC resources once refcount drops to zero.
+	 */
+	err = device_register(&scu->dev);
+	if (err) {
+		put_device(&scu->dev);
+		goto err_unlock;
+	}
 
 	/* Assign device at last */
-	scu->dev = &pdev->dev;
+	ipcdev = scu;
+	mutex_unlock(&ipclock);
 
-	intel_scu_devices_create();
+	return scu;
 
-	pci_set_drvdata(pdev, scu);
-	return 0;
+err_unmap:
+	iounmap(ipc_base);
+err_release:
+	release_mem_region(scu_data->mem.start, resource_size(&scu_data->mem));
+err_free:
+	kfree(scu);
+err_unlock:
+	mutex_unlock(&ipclock);
+
+	return ERR_PTR(err);
 }
+EXPORT_SYMBOL_GPL(__intel_scu_ipc_register);
 
-static const struct pci_device_id pci_ids[] = {
-	{ PCI_VDEVICE(INTEL, 0x080e) },
-	{ PCI_VDEVICE(INTEL, 0x08ea) },
-	{ PCI_VDEVICE(INTEL, 0x11a0) },
-	{}
-};
+/**
+ * intel_scu_ipc_unregister() - Unregister SCU IPC
+ * @scu: SCU IPC handle
+ *
+ * This unregisters the SCU IPC device and releases the acquired
+ * resources once the refcount goes to zero.
+ */
+void intel_scu_ipc_unregister(struct intel_scu_ipc_dev *scu)
+{
+	mutex_lock(&ipclock);
+	if (!WARN_ON(!ipcdev)) {
+		ipcdev = NULL;
+		device_unregister(&scu->dev);
+	}
+	mutex_unlock(&ipclock);
+}
+EXPORT_SYMBOL_GPL(intel_scu_ipc_unregister);
 
-static struct pci_driver ipc_driver = {
-	.driver = {
-		.suppress_bind_attrs = true,
-	},
-	.name = "intel_scu_ipc",
-	.id_table = pci_ids,
-	.probe = ipc_probe,
-};
-builtin_pci_driver(ipc_driver);
+static void devm_intel_scu_ipc_unregister(struct device *dev, void *res)
+{
+	struct intel_scu_ipc_devres *dr = res;
+	struct intel_scu_ipc_dev *scu = dr->scu;
+
+	intel_scu_ipc_unregister(scu);
+}
+
+/**
+ * __devm_intel_scu_ipc_register() - Register managed SCU IPC device
+ * @parent: Parent device
+ * @scu_data: Data used to configure SCU IPC
+ * @owner: Module registering the SCU IPC device
+ *
+ * Call this function to register managed SCU IPC mechanism under
+ * @parent. Returns pointer to the new SCU IPC device or ERR_PTR() in
+ * case of failure. The caller may use the returned instance if it needs
+ * to do SCU IPC calls itself.
+ */
+struct intel_scu_ipc_dev *
+__devm_intel_scu_ipc_register(struct device *parent,
+			      const struct intel_scu_ipc_data *scu_data,
+			      struct module *owner)
+{
+	struct intel_scu_ipc_devres *dr;
+	struct intel_scu_ipc_dev *scu;
+
+	dr = devres_alloc(devm_intel_scu_ipc_unregister, sizeof(*dr), GFP_KERNEL);
+	if (!dr)
+		return NULL;
+
+	scu = __intel_scu_ipc_register(parent, scu_data, owner);
+	if (IS_ERR(scu)) {
+		devres_free(dr);
+		return scu;
+	}
+
+	dr->scu = scu;
+	devres_add(parent, dr);
+
+	return scu;
+}
+EXPORT_SYMBOL_GPL(__devm_intel_scu_ipc_register);
+
+static int __init intel_scu_ipc_init(void)
+{
+	return class_register(&intel_scu_ipc_class);
+}
+subsys_initcall(intel_scu_ipc_init);
+
+static void __exit intel_scu_ipc_exit(void)
+{
+	class_unregister(&intel_scu_ipc_class);
+}
+module_exit(intel_scu_ipc_exit);
diff --git a/drivers/platform/x86/intel_scu_ipcutil.c b/drivers/platform/x86/intel_scu_ipcutil.c
index 8afe6fa06d7b..b7c10c15a3d6 100644
--- a/drivers/platform/x86/intel_scu_ipcutil.c
+++ b/drivers/platform/x86/intel_scu_ipcutil.c
@@ -22,6 +22,9 @@
 
 static int major;
 
+struct intel_scu_ipc_dev *scu;
+static DEFINE_MUTEX(scu_lock);
+
 /* IOCTL commands */
 #define	INTE_SCU_IPC_REGISTER_READ	0
 #define INTE_SCU_IPC_REGISTER_WRITE	1
@@ -52,12 +55,12 @@ static int scu_reg_access(u32 cmd, struct scu_ipc_data  *data)
 
 	switch (cmd) {
 	case INTE_SCU_IPC_REGISTER_READ:
-		return intel_scu_ipc_readv(data->addr, data->data, count);
+		return intel_scu_ipc_dev_readv(scu, data->addr, data->data, count);
 	case INTE_SCU_IPC_REGISTER_WRITE:
-		return intel_scu_ipc_writev(data->addr, data->data, count);
+		return intel_scu_ipc_dev_writev(scu, data->addr, data->data, count);
 	case INTE_SCU_IPC_REGISTER_UPDATE:
-		return intel_scu_ipc_update_register(data->addr[0],
-						    data->data[0], data->mask);
+		return intel_scu_ipc_dev_update(scu, data->addr[0], data->data[0],
+						data->mask);
 	default:
 		return -ENOTTY;
 	}
@@ -91,8 +94,40 @@ static long scu_ipc_ioctl(struct file *fp, unsigned int cmd,
 	return 0;
 }
 
+static int scu_ipc_open(struct inode *inode, struct file *file)
+{
+	int ret = 0;
+
+	/* Only single open at the time */
+	mutex_lock(&scu_lock);
+	if (scu) {
+		ret = -EBUSY;
+		goto unlock;
+	}
+
+	scu = intel_scu_ipc_dev_get();
+	if (!scu)
+		ret = -ENODEV;
+
+unlock:
+	mutex_unlock(&scu_lock);
+	return ret;
+}
+
+static int scu_ipc_release(struct inode *inode, struct file *file)
+{
+	mutex_lock(&scu_lock);
+	intel_scu_ipc_dev_put(scu);
+	scu = NULL;
+	mutex_unlock(&scu_lock);
+
+	return 0;
+}
+
 static const struct file_operations scu_ipc_fops = {
 	.unlocked_ioctl = scu_ipc_ioctl,
+	.open = scu_ipc_open,
+	.release = scu_ipc_release,
 };
 
 static int __init ipc_module_init(void)
diff --git a/drivers/platform/x86/intel_scu_pcidrv.c b/drivers/platform/x86/intel_scu_pcidrv.c
new file mode 100644
index 000000000000..8c5fd8240da9
--- /dev/null
+++ b/drivers/platform/x86/intel_scu_pcidrv.c
@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * PCI driver for the Intel SCU.
+ *
+ * Copyright (C) 2008-2010, 2015, 2020 Intel Corporation
+ * Authors: Sreedhara DS (sreedhara.ds@intel.com)
+ *	    Mika Westerberg <mika.westerberg@linux.intel.com>
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+
+#include <asm/intel-mid.h>
+#include <asm/intel_scu_ipc.h>
+
+static int intel_scu_pci_probe(struct pci_dev *pdev,
+			       const struct pci_device_id *id)
+{
+	void (*setup_fn)(void) = (void (*)(void))id->driver_data;
+	struct intel_scu_ipc_data scu_data = {};
+	struct intel_scu_ipc_dev *scu;
+	int ret;
+
+	ret = pcim_enable_device(pdev);
+	if (ret)
+		return ret;
+
+	scu_data.mem = pdev->resource[0];
+	scu_data.irq = pdev->irq;
+
+	scu = intel_scu_ipc_register(&pdev->dev, &scu_data);
+	if (IS_ERR(scu))
+		return PTR_ERR(scu);
+
+	if (setup_fn)
+		setup_fn();
+	return 0;
+}
+
+static void intel_mid_scu_setup(void)
+{
+	intel_scu_devices_create();
+}
+
+static const struct pci_device_id pci_ids[] = {
+	{ PCI_VDEVICE(INTEL, 0x080e),
+	  .driver_data = (kernel_ulong_t)intel_mid_scu_setup },
+	{ PCI_VDEVICE(INTEL, 0x08ea),
+	  .driver_data = (kernel_ulong_t)intel_mid_scu_setup },
+	{ PCI_VDEVICE(INTEL, 0x0a94) },
+	{ PCI_VDEVICE(INTEL, 0x11a0),
+	  .driver_data = (kernel_ulong_t)intel_mid_scu_setup },
+	{ PCI_VDEVICE(INTEL, 0x1a94) },
+	{ PCI_VDEVICE(INTEL, 0x5a94) },
+	{}
+};
+
+static struct pci_driver intel_scu_pci_driver = {
+	.driver = {
+		.suppress_bind_attrs = true,
+	},
+	.name = "intel_scu",
+	.id_table = pci_ids,
+	.probe = intel_scu_pci_probe,
+};
+
+builtin_pci_driver(intel_scu_pci_driver);
diff --git a/drivers/platform/x86/intel_scu_pltdrv.c b/drivers/platform/x86/intel_scu_pltdrv.c
new file mode 100644
index 000000000000..56ec6ae4c824
--- /dev/null
+++ b/drivers/platform/x86/intel_scu_pltdrv.c
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Platform driver for the Intel SCU.
+ *
+ * Copyright (C) 2019, Intel Corporation
+ * Authors: Divya Sasidharan <divya.s.sasidharan@intel.com>
+ *	    Mika Westerberg <mika.westerberg@linux.intel.com>
+ *	    Rajmohan Mani <rajmohan.mani@intel.com>
+ */
+
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <asm/intel_scu_ipc.h>
+
+static int intel_scu_platform_probe(struct platform_device *pdev)
+{
+	struct intel_scu_ipc_data scu_data = {};
+	struct intel_scu_ipc_dev *scu;
+	const struct resource *res;
+
+	scu_data.irq = platform_get_irq_optional(pdev, 0);
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -ENOMEM;
+
+	scu_data.mem = *res;
+
+	scu = devm_intel_scu_ipc_register(&pdev->dev, &scu_data);
+	if (IS_ERR(scu))
+		return PTR_ERR(scu);
+
+	platform_set_drvdata(pdev, scu);
+	return 0;
+}
+
+static const struct acpi_device_id intel_scu_acpi_ids[] = {
+	{ "INTC1026" },
+	{}
+};
+MODULE_DEVICE_TABLE(acpi, intel_scu_acpi_ids);
+
+static struct platform_driver intel_scu_platform_driver = {
+	.probe = intel_scu_platform_probe,
+	.driver = {
+		.name = "intel_scu",
+		.acpi_match_table = intel_scu_acpi_ids,
+	},
+};
+module_platform_driver(intel_scu_platform_driver);
+
+MODULE_AUTHOR("Divya Sasidharan <divya.s.sasidharan@intel.com>");
+MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com");
+MODULE_AUTHOR("Rajmohan Mani <rajmohan.mani@intel.com>");
+MODULE_DESCRIPTION("Intel SCU platform driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/platform/x86/intel_speed_select_if/isst_if_mbox_pci.c b/drivers/platform/x86/intel_speed_select_if/isst_if_mbox_pci.c
index de4169d0796b..d84e2174cbde 100644
--- a/drivers/platform/x86/intel_speed_select_if/isst_if_mbox_pci.c
+++ b/drivers/platform/x86/intel_speed_select_if/isst_if_mbox_pci.c
@@ -21,13 +21,12 @@
 #define PUNIT_MAILBOX_BUSY_BIT		31
 
 /*
- * Commands has variable amount of processing time. Most of the commands will
- * be done in 0-3 tries, but some takes up to 50.
- * The real processing time was observed as 25us for the most of the commands
- * at 2GHz. It is possible to optimize this count taking samples on customer
- * systems.
+ * The average time to complete some commands is about 40us. The current
+ * count is enough to satisfy 40us. But when the firmware is very busy, this
+ * causes timeout occasionally.  So increase to deal with some worst case
+ * scenarios. Most of the command still complete in few us.
  */
-#define OS_MAILBOX_RETRY_COUNT		50
+#define OS_MAILBOX_RETRY_COUNT		100
 
 struct isst_if_device {
 	struct mutex mutex;
diff --git a/drivers/platform/x86/intel_telemetry_core.c b/drivers/platform/x86/intel_telemetry_core.c
index d4040bb222b4..fdf55b5d6948 100644
--- a/drivers/platform/x86/intel_telemetry_core.c
+++ b/drivers/platform/x86/intel_telemetry_core.c
@@ -353,21 +353,16 @@ int telemetry_clear_pltdata(void)
 EXPORT_SYMBOL_GPL(telemetry_clear_pltdata);
 
 /**
- * telemetry_pltconfig_valid() - Checkif platform config is valid
+ * telemetry_get_pltdata() - Return telemetry platform config
  *
- * Usage by other than telemetry module is invalid
- *
- * Return: 0 success, < 0 for failure
+ * May be used by other telemetry modules to get platform specific
+ * configuration.
  */
-int telemetry_pltconfig_valid(void)
+struct telemetry_plt_config *telemetry_get_pltdata(void)
 {
-	if (telm_core_conf.plt_config)
-		return 0;
-
-	else
-		return -EINVAL;
+	return telm_core_conf.plt_config;
 }
-EXPORT_SYMBOL_GPL(telemetry_pltconfig_valid);
+EXPORT_SYMBOL_GPL(telemetry_get_pltdata);
 
 static inline int telemetry_get_pssevtname(enum telemetry_unit telem_unit,
 					   const char **name, int len)
diff --git a/drivers/platform/x86/intel_telemetry_debugfs.c b/drivers/platform/x86/intel_telemetry_debugfs.c
index 8a53d3b485b3..1d4d0fbfd63c 100644
--- a/drivers/platform/x86/intel_telemetry_debugfs.c
+++ b/drivers/platform/x86/intel_telemetry_debugfs.c
@@ -15,6 +15,7 @@
  */
 #include <linux/debugfs.h>
 #include <linux/device.h>
+#include <linux/mfd/intel_pmc_bxt.h>
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/seq_file.h>
@@ -22,7 +23,6 @@
 
 #include <asm/cpu_device_id.h>
 #include <asm/intel-family.h>
-#include <asm/intel_pmc_ipc.h>
 #include <asm/intel_telemetry.h>
 
 #define DRIVER_NAME			"telemetry_soc_debugfs"
@@ -647,10 +647,11 @@ DEFINE_SHOW_ATTRIBUTE(telem_soc_states);
 
 static int telem_s0ix_res_get(void *data, u64 *val)
 {
+	struct telemetry_plt_config *plt_config = telemetry_get_pltdata();
 	u64 s0ix_total_res;
 	int ret;
 
-	ret = intel_pmc_s0ix_counter_read(&s0ix_total_res);
+	ret = intel_pmc_s0ix_counter_read(plt_config->pmc, &s0ix_total_res);
 	if (ret) {
 		pr_err("Failed to read S0ix residency");
 		return ret;
@@ -837,12 +838,15 @@ static int pm_suspend_exit_cb(void)
 	 */
 	if (suspend_shlw_ctr_exit == suspend_shlw_ctr_temp &&
 	    suspend_deep_ctr_exit == suspend_deep_ctr_temp) {
-		ret = intel_pmc_gcr_read64(PMC_GCR_TELEM_SHLW_S0IX_REG,
+		struct telemetry_plt_config *plt_config = telemetry_get_pltdata();
+		struct intel_pmc_dev *pmc = plt_config->pmc;
+
+		ret = intel_pmc_gcr_read64(pmc, PMC_GCR_TELEM_SHLW_S0IX_REG,
 					  &suspend_shlw_res_exit);
 		if (ret < 0)
 			goto out;
 
-		ret = intel_pmc_gcr_read64(PMC_GCR_TELEM_DEEP_S0IX_REG,
+		ret = intel_pmc_gcr_read64(pmc, PMC_GCR_TELEM_DEEP_S0IX_REG,
 					  &suspend_deep_res_exit);
 		if (ret < 0)
 			goto out;
@@ -910,8 +914,7 @@ static int __init telemetry_debugfs_init(void)
 
 	debugfs_conf = (struct telemetry_debugfs_conf *)id->driver_data;
 
-	err = telemetry_pltconfig_valid();
-	if (err < 0) {
+	if (!telemetry_get_pltdata()) {
 		pr_info("Invalid pltconfig, ensure IPC1 device is enabled in BIOS\n");
 		return -ENODEV;
 	}
diff --git a/drivers/platform/x86/intel_telemetry_pltdrv.c b/drivers/platform/x86/intel_telemetry_pltdrv.c
index 987a24e3344e..405dea87de6b 100644
--- a/drivers/platform/x86/intel_telemetry_pltdrv.c
+++ b/drivers/platform/x86/intel_telemetry_pltdrv.c
@@ -15,7 +15,6 @@
 
 #include <asm/cpu_device_id.h>
 #include <asm/intel-family.h>
-#include <asm/intel_pmc_ipc.h>
 #include <asm/intel_punit_ipc.h>
 #include <asm/intel_telemetry.h>
 
@@ -35,6 +34,7 @@
 #define TELEM_SSRAM_STARTTIME_OFFSET	8
 #define TELEM_SSRAM_EVTLOG_OFFSET	16
 
+#define IOSS_TELEM			0xeb
 #define IOSS_TELEM_EVENT_READ		0x0
 #define IOSS_TELEM_EVENT_WRITE		0x1
 #define IOSS_TELEM_INFO_READ		0x2
@@ -42,9 +42,6 @@
 #define IOSS_TELEM_TRACE_CTL_WRITE	0x6
 #define IOSS_TELEM_EVENT_CTL_READ	0x7
 #define IOSS_TELEM_EVENT_CTL_WRITE	0x8
-#define IOSS_TELEM_EVT_CTRL_WRITE_SIZE	0x4
-#define IOSS_TELEM_READ_WORD		0x1
-#define IOSS_TELEM_WRITE_FOURBYTES	0x4
 #define IOSS_TELEM_EVT_WRITE_SIZE	0x3
 
 #define TELEM_INFO_SRAMEVTS_MASK	0xFF00
@@ -250,17 +247,14 @@ static int telemetry_check_evtid(enum telemetry_unit telem_unit,
 static inline int telemetry_plt_config_ioss_event(u32 evt_id, int index)
 {
 	u32 write_buf;
-	int ret;
 
 	write_buf = evt_id | TELEM_EVENT_ENABLE;
 	write_buf <<= BITS_PER_BYTE;
 	write_buf |= index;
 
-	ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
-				    IOSS_TELEM_EVENT_WRITE, (u8 *)&write_buf,
-				    IOSS_TELEM_EVT_WRITE_SIZE, NULL, 0);
-
-	return ret;
+	return intel_scu_ipc_dev_command(telm_conf->scu, IOSS_TELEM,
+					 IOSS_TELEM_EVENT_WRITE, &write_buf,
+					 IOSS_TELEM_EVT_WRITE_SIZE, NULL, 0);
 }
 
 static inline int telemetry_plt_config_pss_event(u32 evt_id, int index)
@@ -278,6 +272,7 @@ static inline int telemetry_plt_config_pss_event(u32 evt_id, int index)
 static int telemetry_setup_iossevtconfig(struct telemetry_evtconfig evtconfig,
 					 enum telemetry_action action)
 {
+	struct intel_scu_ipc_dev *scu = telm_conf->scu;
 	u8 num_ioss_evts, ioss_period;
 	int ret, index, idx;
 	u32 *ioss_evtmap;
@@ -288,9 +283,9 @@ static int telemetry_setup_iossevtconfig(struct telemetry_evtconfig evtconfig,
 	ioss_evtmap = evtconfig.evtmap;
 
 	/* Get telemetry EVENT CTL */
-	ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
+	ret = intel_scu_ipc_dev_command(scu, IOSS_TELEM,
 				    IOSS_TELEM_EVENT_CTL_READ, NULL, 0,
-				    &telem_ctrl, IOSS_TELEM_READ_WORD);
+				    &telem_ctrl, sizeof(telem_ctrl));
 	if (ret) {
 		pr_err("IOSS TELEM_CTRL Read Failed\n");
 		return ret;
@@ -299,11 +294,9 @@ static int telemetry_setup_iossevtconfig(struct telemetry_evtconfig evtconfig,
 	/* Disable Telemetry */
 	TELEM_DISABLE(telem_ctrl);
 
-	ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
-				    IOSS_TELEM_EVENT_CTL_WRITE,
-				    (u8 *)&telem_ctrl,
-				    IOSS_TELEM_EVT_CTRL_WRITE_SIZE,
-				    NULL, 0);
+	ret = intel_scu_ipc_dev_command(scu, IOSS_TELEM,
+				    IOSS_TELEM_EVENT_CTL_WRITE, &telem_ctrl,
+				    sizeof(telem_ctrl), NULL, 0);
 	if (ret) {
 		pr_err("IOSS TELEM_CTRL Event Disable Write Failed\n");
 		return ret;
@@ -315,10 +308,9 @@ static int telemetry_setup_iossevtconfig(struct telemetry_evtconfig evtconfig,
 		/* Clear All Events */
 		TELEM_CLEAR_EVENTS(telem_ctrl);
 
-		ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
+		ret = intel_scu_ipc_dev_command(scu, IOSS_TELEM,
 					    IOSS_TELEM_EVENT_CTL_WRITE,
-					    (u8 *)&telem_ctrl,
-					    IOSS_TELEM_EVT_CTRL_WRITE_SIZE,
+					    &telem_ctrl, sizeof(telem_ctrl),
 					    NULL, 0);
 		if (ret) {
 			pr_err("IOSS TELEM_CTRL Event Disable Write Failed\n");
@@ -344,10 +336,9 @@ static int telemetry_setup_iossevtconfig(struct telemetry_evtconfig evtconfig,
 		/* Clear All Events */
 		TELEM_CLEAR_EVENTS(telem_ctrl);
 
-		ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
+		ret = intel_scu_ipc_dev_command(scu, IOSS_TELEM,
 					    IOSS_TELEM_EVENT_CTL_WRITE,
-					    (u8 *)&telem_ctrl,
-					    IOSS_TELEM_EVT_CTRL_WRITE_SIZE,
+					    &telem_ctrl, sizeof(telem_ctrl),
 					    NULL, 0);
 		if (ret) {
 			pr_err("IOSS TELEM_CTRL Event Disable Write Failed\n");
@@ -396,10 +387,9 @@ static int telemetry_setup_iossevtconfig(struct telemetry_evtconfig evtconfig,
 	TELEM_ENABLE_PERIODIC(telem_ctrl);
 	telem_ctrl |= ioss_period;
 
-	ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
+	ret = intel_scu_ipc_dev_command(scu, IOSS_TELEM,
 				    IOSS_TELEM_EVENT_CTL_WRITE,
-				    (u8 *)&telem_ctrl,
-				    IOSS_TELEM_EVT_CTRL_WRITE_SIZE, NULL, 0);
+				    &telem_ctrl, sizeof(telem_ctrl), NULL, 0);
 	if (ret) {
 		pr_err("IOSS TELEM_CTRL Event Enable Write Failed\n");
 		return ret;
@@ -586,8 +576,9 @@ static int telemetry_setup(struct platform_device *pdev)
 	u32 read_buf, events, event_regs;
 	int ret;
 
-	ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY, IOSS_TELEM_INFO_READ,
-				    NULL, 0, &read_buf, IOSS_TELEM_READ_WORD);
+	ret = intel_scu_ipc_dev_command(telm_conf->scu, IOSS_TELEM,
+					IOSS_TELEM_INFO_READ, NULL, 0,
+					&read_buf, sizeof(read_buf));
 	if (ret) {
 		dev_err(&pdev->dev, "IOSS TELEM_INFO Read Failed\n");
 		return ret;
@@ -681,6 +672,8 @@ static int telemetry_plt_set_sampling_period(u8 pss_period, u8 ioss_period)
 
 	mutex_lock(&(telm_conf->telem_lock));
 	if (ioss_period) {
+		struct intel_scu_ipc_dev *scu = telm_conf->scu;
+
 		if (TELEM_SAMPLE_PERIOD_INVALID(ioss_period)) {
 			pr_err("IOSS Sampling Period Out of Range\n");
 			ret = -EINVAL;
@@ -688,9 +681,9 @@ static int telemetry_plt_set_sampling_period(u8 pss_period, u8 ioss_period)
 		}
 
 		/* Get telemetry EVENT CTL */
-		ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
+		ret = intel_scu_ipc_dev_command(scu, IOSS_TELEM,
 					    IOSS_TELEM_EVENT_CTL_READ, NULL, 0,
-					    &telem_ctrl, IOSS_TELEM_READ_WORD);
+					    &telem_ctrl, sizeof(telem_ctrl));
 		if (ret) {
 			pr_err("IOSS TELEM_CTRL Read Failed\n");
 			goto out;
@@ -699,11 +692,10 @@ static int telemetry_plt_set_sampling_period(u8 pss_period, u8 ioss_period)
 		/* Disable Telemetry */
 		TELEM_DISABLE(telem_ctrl);
 
-		ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
-					    IOSS_TELEM_EVENT_CTL_WRITE,
-					    (u8 *)&telem_ctrl,
-					    IOSS_TELEM_EVT_CTRL_WRITE_SIZE,
-					    NULL, 0);
+		ret = intel_scu_ipc_dev_command(scu, IOSS_TELEM,
+						IOSS_TELEM_EVENT_CTL_WRITE,
+						&telem_ctrl, sizeof(telem_ctrl),
+						NULL, 0);
 		if (ret) {
 			pr_err("IOSS TELEM_CTRL Event Disable Write Failed\n");
 			goto out;
@@ -715,11 +707,10 @@ static int telemetry_plt_set_sampling_period(u8 pss_period, u8 ioss_period)
 		TELEM_ENABLE_PERIODIC(telem_ctrl);
 		telem_ctrl |= ioss_period;
 
-		ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
-					    IOSS_TELEM_EVENT_CTL_WRITE,
-					    (u8 *)&telem_ctrl,
-					    IOSS_TELEM_EVT_CTRL_WRITE_SIZE,
-					    NULL, 0);
+		ret = intel_scu_ipc_dev_command(scu, IOSS_TELEM,
+						IOSS_TELEM_EVENT_CTL_WRITE,
+						&telem_ctrl, sizeof(telem_ctrl),
+						NULL, 0);
 		if (ret) {
 			pr_err("IOSS TELEM_CTRL Event Enable Write Failed\n");
 			goto out;
@@ -1014,9 +1005,9 @@ static int telemetry_plt_get_trace_verbosity(enum telemetry_unit telem_unit,
 		break;
 
 	case TELEM_IOSS:
-		ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
-				IOSS_TELEM_TRACE_CTL_READ, NULL, 0, &temp,
-				IOSS_TELEM_READ_WORD);
+		ret = intel_scu_ipc_dev_command(telm_conf->scu,
+				IOSS_TELEM, IOSS_TELEM_TRACE_CTL_READ,
+				NULL, 0, &temp, sizeof(temp));
 		if (ret) {
 			pr_err("IOSS TRACE_CTL Read Failed\n");
 			goto out;
@@ -1068,9 +1059,9 @@ static int telemetry_plt_set_trace_verbosity(enum telemetry_unit telem_unit,
 		break;
 
 	case TELEM_IOSS:
-		ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
-				IOSS_TELEM_TRACE_CTL_READ, NULL, 0, &temp,
-				IOSS_TELEM_READ_WORD);
+		ret = intel_scu_ipc_dev_command(telm_conf->scu, IOSS_TELEM,
+						IOSS_TELEM_TRACE_CTL_READ,
+						NULL, 0, &temp, sizeof(temp));
 		if (ret) {
 			pr_err("IOSS TRACE_CTL Read Failed\n");
 			goto out;
@@ -1079,9 +1070,9 @@ static int telemetry_plt_set_trace_verbosity(enum telemetry_unit telem_unit,
 		TELEM_CLEAR_VERBOSITY_BITS(temp);
 		TELEM_SET_VERBOSITY_BITS(temp, verbosity);
 
-		ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
-				IOSS_TELEM_TRACE_CTL_WRITE, (u8 *)&temp,
-				IOSS_TELEM_WRITE_FOURBYTES, NULL, 0);
+		ret = intel_scu_ipc_dev_command(telm_conf->scu, IOSS_TELEM,
+						IOSS_TELEM_TRACE_CTL_WRITE,
+						&temp, sizeof(temp), NULL, 0);
 		if (ret) {
 			pr_err("IOSS TRACE_CTL Verbosity Set Failed\n");
 			goto out;
@@ -1124,6 +1115,8 @@ static int telemetry_pltdrv_probe(struct platform_device *pdev)
 
 	telm_conf = (struct telemetry_plt_config *)id->driver_data;
 
+	telm_conf->pmc = dev_get_drvdata(pdev->dev.parent);
+
 	mem = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(mem))
 		return PTR_ERR(mem);
@@ -1136,6 +1129,12 @@ static int telemetry_pltdrv_probe(struct platform_device *pdev)
 
 	telm_conf->ioss_config.regmap = mem;
 
+	telm_conf->scu = devm_intel_scu_ipc_dev_get(&pdev->dev);
+	if (!telm_conf->scu) {
+		ret = -EPROBE_DEFER;
+		goto out;
+	}
+
 	mutex_init(&telm_conf->telem_lock);
 	mutex_init(&telm_conf->telem_trace_lock);
 
diff --git a/drivers/platform/x86/lg-laptop.c b/drivers/platform/x86/lg-laptop.c
index c0bb1f864dfe..dd900a76d8de 100644
--- a/drivers/platform/x86/lg-laptop.c
+++ b/drivers/platform/x86/lg-laptop.c
@@ -67,9 +67,7 @@ static u32 inited;
 #define INIT_INPUT_WMI_0        0x01
 #define INIT_INPUT_WMI_2        0x02
 #define INIT_INPUT_ACPI         0x04
-#define INIT_TPAD_LED           0x08
-#define INIT_KBD_LED            0x10
-#define INIT_SPARSE_KEYMAP        0x80
+#define INIT_SPARSE_KEYMAP      0x80
 
 static const struct key_entry wmi_keymap[] = {
 	{KE_KEY, 0x70, {KEY_F15} },	 /* LG control panel (F1) */
@@ -626,11 +624,9 @@ static int acpi_add(struct acpi_device *device)
 	if (ret)
 		goto out_platform_device;
 
-	if (!led_classdev_register(&pf_device->dev, &kbd_backlight))
-		inited |= INIT_KBD_LED;
-
-	if (!led_classdev_register(&pf_device->dev, &tpad_led))
-		inited |= INIT_TPAD_LED;
+	/* LEDs are optional */
+	led_classdev_register(&pf_device->dev, &kbd_backlight);
+	led_classdev_register(&pf_device->dev, &tpad_led);
 
 	wmi_input_setup();
 
@@ -646,11 +642,9 @@ out_platform_registered:
 static int acpi_remove(struct acpi_device *device)
 {
 	sysfs_remove_group(&pf_device->dev.kobj, &dev_attribute_group);
-	if (inited & INIT_KBD_LED)
-		led_classdev_unregister(&kbd_backlight);
 
-	if (inited & INIT_TPAD_LED)
-		led_classdev_unregister(&tpad_led);
+	led_classdev_unregister(&tpad_led);
+	led_classdev_unregister(&kbd_backlight);
 
 	wmi_input_destroy();
 	platform_device_unregister(pf_device);
diff --git a/drivers/platform/x86/samsung-laptop.c b/drivers/platform/x86/samsung-laptop.c
index 23e40aa2176e..d5cec6e35bb8 100644
--- a/drivers/platform/x86/samsung-laptop.c
+++ b/drivers/platform/x86/samsung-laptop.c
@@ -1138,8 +1138,7 @@ static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
 
 static void samsung_leds_exit(struct samsung_laptop *samsung)
 {
-	if (!IS_ERR_OR_NULL(samsung->kbd_led.dev))
-		led_classdev_unregister(&samsung->kbd_led);
+	led_classdev_unregister(&samsung->kbd_led);
 	if (samsung->led_workqueue)
 		destroy_workqueue(samsung->led_workqueue);
 }
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
index 51309f7ceede..e5a1b5533408 100644
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -757,33 +757,6 @@ static union acpi_object *__call_snc_method(acpi_handle handle, char *method,
 	return result;
 }
 
-static int sony_nc_int_call(acpi_handle handle, char *name, int *value,
-		int *result)
-{
-	union acpi_object *object = NULL;
-	if (value) {
-		u64 v = *value;
-		object = __call_snc_method(handle, name, &v);
-	} else
-		object = __call_snc_method(handle, name, NULL);
-
-	if (!object)
-		return -EINVAL;
-
-	if (object->type != ACPI_TYPE_INTEGER) {
-		pr_warn("Invalid acpi_object: expected 0x%x got 0x%x\n",
-				ACPI_TYPE_INTEGER, object->type);
-		kfree(object);
-		return -EINVAL;
-	}
-
-	if (result)
-		*result = object->integer.value;
-
-	kfree(object);
-	return 0;
-}
-
 #define MIN(a, b)	(a > b ? b : a)
 static int sony_nc_buffer_call(acpi_handle handle, char *name, u64 *value,
 		void *buffer, size_t buflen)
@@ -795,17 +768,20 @@ static int sony_nc_buffer_call(acpi_handle handle, char *name, u64 *value,
 	if (!object)
 		return -EINVAL;
 
-	if (object->type == ACPI_TYPE_BUFFER) {
+	if (!buffer) {
+		/* do nothing */
+	} else if (object->type == ACPI_TYPE_BUFFER) {
 		len = MIN(buflen, object->buffer.length);
+		memset(buffer, 0, buflen);
 		memcpy(buffer, object->buffer.pointer, len);
 
 	} else if (object->type == ACPI_TYPE_INTEGER) {
 		len = MIN(buflen, sizeof(object->integer.value));
+		memset(buffer, 0, buflen);
 		memcpy(buffer, &object->integer.value, len);
 
 	} else {
-		pr_warn("Invalid acpi_object: expected 0x%x got 0x%x\n",
-				ACPI_TYPE_BUFFER, object->type);
+		pr_warn("Unexpected acpi_object: 0x%x\n", object->type);
 		ret = -EINVAL;
 	}
 
@@ -813,6 +789,23 @@ static int sony_nc_buffer_call(acpi_handle handle, char *name, u64 *value,
 	return ret;
 }
 
+static int sony_nc_int_call(acpi_handle handle, char *name, int *value, int
+		*result)
+{
+	int ret;
+
+	if (value) {
+		u64 v = *value;
+
+		ret = sony_nc_buffer_call(handle, name, &v, result,
+				sizeof(*result));
+	} else {
+		ret =  sony_nc_buffer_call(handle, name, NULL, result,
+				sizeof(*result));
+	}
+	return ret;
+}
+
 struct sony_nc_handles {
 	u16 cap[0x10];
 	struct device_attribute devattr;
@@ -2295,7 +2288,12 @@ static void sony_nc_thermal_cleanup(struct platform_device *pd)
 #ifdef CONFIG_PM_SLEEP
 static void sony_nc_thermal_resume(void)
 {
-	unsigned int status = sony_nc_thermal_mode_get();
+	int status;
+
+	if (!th_handle)
+		return;
+
+	status = sony_nc_thermal_mode_get();
 
 	if (status != th_handle->mode)
 		sony_nc_thermal_mode_set(th_handle->mode);
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 0f704484ae1d..ff7f0a4f2475 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -318,6 +318,7 @@ static struct {
 	u32 uwb:1;
 	u32 fan_ctrl_status_undef:1;
 	u32 second_fan:1;
+	u32 second_fan_ctl:1;
 	u32 beep_needs_two_args:1;
 	u32 mixer_no_level_control:1;
 	u32 battery_force_primary:1;
@@ -884,20 +885,11 @@ static ssize_t dispatch_proc_write(struct file *file,
 
 	if (!ibm || !ibm->write)
 		return -EINVAL;
-	if (count > PAGE_SIZE - 2)
-		return -EINVAL;
-
-	kernbuf = kmalloc(count + 2, GFP_KERNEL);
-	if (!kernbuf)
-		return -ENOMEM;
 
-	if (copy_from_user(kernbuf, userbuf, count)) {
-		kfree(kernbuf);
-		return -EFAULT;
-	}
+	kernbuf = strndup_user(userbuf, PAGE_SIZE);
+	if (IS_ERR(kernbuf))
+		return PTR_ERR(kernbuf);
 
-	kernbuf[count] = 0;
-	strcat(kernbuf, ",");
 	ret = ibm->write(kernbuf);
 	if (ret == 0)
 		ret = count;
@@ -915,23 +907,6 @@ static const struct proc_ops dispatch_proc_ops = {
 	.proc_write	= dispatch_proc_write,
 };
 
-static char *next_cmd(char **cmds)
-{
-	char *start = *cmds;
-	char *end;
-
-	while ((end = strchr(start, ',')) && end == start)
-		start = end + 1;
-
-	if (!end)
-		return NULL;
-
-	*end = 0;
-	*cmds = end + 1;
-	return start;
-}
-
-
 /****************************************************************************
  ****************************************************************************
  *
@@ -1422,7 +1397,7 @@ static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
 	if (id >= TPACPI_RFK_SW_MAX)
 		return -ENODEV;
 
-	while ((cmd = next_cmd(&buf))) {
+	while ((cmd = strsep(&buf, ","))) {
 		if (strlencmp(cmd, "enable") == 0)
 			status = TPACPI_RFK_RADIO_ON;
 		else if (strlencmp(cmd, "disable") == 0)
@@ -4305,7 +4280,7 @@ static int hotkey_write(char *buf)
 	mask = hotkey_user_mask;
 
 	res = 0;
-	while ((cmd = next_cmd(&buf))) {
+	while ((cmd = strsep(&buf, ","))) {
 		if (strlencmp(cmd, "enable") == 0) {
 			hotkey_enabledisable_warn(1);
 		} else if (strlencmp(cmd, "disable") == 0) {
@@ -5232,7 +5207,7 @@ static int video_write(char *buf)
 	enable = 0;
 	disable = 0;
 
-	while ((cmd = next_cmd(&buf))) {
+	while ((cmd = strsep(&buf, ","))) {
 		if (strlencmp(cmd, "lcd_enable") == 0) {
 			enable |= TP_ACPI_VIDEO_S_LCD;
 		} else if (strlencmp(cmd, "lcd_disable") == 0) {
@@ -5433,8 +5408,7 @@ static int __init kbdlight_init(struct ibm_init_struct *iibm)
 
 static void kbdlight_exit(void)
 {
-	if (tp_features.kbdlight)
-		led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev);
+	led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev);
 }
 
 static int kbdlight_set_level_and_update(int level)
@@ -5472,23 +5446,18 @@ static int kbdlight_read(struct seq_file *m)
 static int kbdlight_write(char *buf)
 {
 	char *cmd;
-	int level = -1;
+	int res, level = -EINVAL;
 
 	if (!tp_features.kbdlight)
 		return -ENODEV;
 
-	while ((cmd = next_cmd(&buf))) {
-		if (strlencmp(cmd, "0") == 0)
-			level = 0;
-		else if (strlencmp(cmd, "1") == 0)
-			level = 1;
-		else if (strlencmp(cmd, "2") == 0)
-			level = 2;
-		else
-			return -EINVAL;
+	while ((cmd = strsep(&buf, ","))) {
+		res = kstrtoint(cmd, 10, &level);
+		if (res < 0)
+			return res;
 	}
 
-	if (level == -1)
+	if (level >= 3 || level < 0)
 		return -EINVAL;
 
 	return kbdlight_set_level_and_update(level);
@@ -5657,7 +5626,7 @@ static int light_write(char *buf)
 	if (!tp_features.light)
 		return -ENODEV;
 
-	while ((cmd = next_cmd(&buf))) {
+	while ((cmd = strsep(&buf, ","))) {
 		if (strlencmp(cmd, "on") == 0) {
 			newstatus = 1;
 		} else if (strlencmp(cmd, "off") == 0) {
@@ -5742,7 +5711,7 @@ static int cmos_write(char *buf)
 	char *cmd;
 	int cmos_cmd, res;
 
-	while ((cmd = next_cmd(&buf))) {
+	while ((cmd = strsep(&buf, ","))) {
 		if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
 		    cmos_cmd >= 0 && cmos_cmd <= 21) {
 			/* cmos_cmd set */
@@ -5948,20 +5917,14 @@ static void led_exit(void)
 {
 	unsigned int i;
 
-	for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
-		if (tpacpi_leds[i].led_classdev.name)
-			led_classdev_unregister(&tpacpi_leds[i].led_classdev);
-	}
+	for (i = 0; i < TPACPI_LED_NUMLEDS; i++)
+		led_classdev_unregister(&tpacpi_leds[i].led_classdev);
 
 	kfree(tpacpi_leds);
 }
 
 static int __init tpacpi_init_led(unsigned int led)
 {
-	int rc;
-
-	tpacpi_leds[led].led = led;
-
 	/* LEDs with no name don't get registered */
 	if (!tpacpi_led_names[led])
 		return 0;
@@ -5969,17 +5932,12 @@ static int __init tpacpi_init_led(unsigned int led)
 	tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set;
 	tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
 	if (led_supported == TPACPI_LED_570)
-		tpacpi_leds[led].led_classdev.brightness_get =
-						&led_sysfs_get;
+		tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get;
 
 	tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
+	tpacpi_leds[led].led = led;
 
-	rc = led_classdev_register(&tpacpi_pdev->dev,
-				&tpacpi_leds[led].led_classdev);
-	if (rc < 0)
-		tpacpi_leds[led].led_classdev.name = NULL;
-
-	return rc;
+	return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev);
 }
 
 static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
@@ -6089,8 +6047,7 @@ static int __init led_init(struct ibm_init_struct *iibm)
 	for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
 		tpacpi_leds[i].led = -1;
 
-		if (!tpacpi_is_led_restricted(i) &&
-		    test_bit(i, &useful_leds)) {
+		if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) {
 			rc = tpacpi_init_led(i);
 			if (rc < 0) {
 				led_exit();
@@ -6143,12 +6100,14 @@ static int led_write(char *buf)
 	if (!led_supported)
 		return -ENODEV;
 
-	while ((cmd = next_cmd(&buf))) {
+	while ((cmd = strsep(&buf, ","))) {
 		if (sscanf(cmd, "%d", &led) != 1)
 			return -EINVAL;
 
-		if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1) ||
-				tpacpi_leds[led].led < 0)
+		if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1))
+			return -ENODEV;
+
+		if (tpacpi_leds[led].led < 0)
 			return -ENODEV;
 
 		if (strstr(cmd, "off")) {
@@ -6228,7 +6187,7 @@ static int beep_write(char *buf)
 	if (!beep_handle)
 		return -ENODEV;
 
-	while ((cmd = next_cmd(&buf))) {
+	while ((cmd = strsep(&buf, ","))) {
 		if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
 		    beep_cmd >= 0 && beep_cmd <= 17) {
 			/* beep_cmd set */
@@ -7116,7 +7075,7 @@ static int brightness_write(char *buf)
 	if (level < 0)
 		return level;
 
-	while ((cmd = next_cmd(&buf))) {
+	while ((cmd = strsep(&buf, ","))) {
 		if (strlencmp(cmd, "up") == 0) {
 			if (level < bright_maxlvl)
 				level++;
@@ -7868,7 +7827,7 @@ static int volume_write(char *buf)
 	new_level = s & TP_EC_AUDIO_LVL_MSK;
 	new_mute  = s & TP_EC_AUDIO_MUTESW_MSK;
 
-	while ((cmd = next_cmd(&buf))) {
+	while ((cmd = strsep(&buf, ","))) {
 		if (!tp_features.mixer_no_level_control) {
 			if (strlencmp(cmd, "up") == 0) {
 				if (new_mute)
@@ -8324,11 +8283,19 @@ static int fan_set_level(int level)
 
 	switch (fan_control_access_mode) {
 	case TPACPI_FAN_WR_ACPI_SFAN:
-		if (level >= 0 && level <= 7) {
-			if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
-				return -EIO;
-		} else
+		if ((level < 0) || (level > 7))
 			return -EINVAL;
+
+		if (tp_features.second_fan_ctl) {
+			if (!fan_select_fan2() ||
+			    !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) {
+				pr_warn("Couldn't set 2nd fan level, disabling support\n");
+				tp_features.second_fan_ctl = 0;
+			}
+			fan_select_fan1();
+		}
+		if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
+			return -EIO;
 		break;
 
 	case TPACPI_FAN_WR_ACPI_FANS:
@@ -8345,6 +8312,15 @@ static int fan_set_level(int level)
 		else if (level & TP_EC_FAN_AUTO)
 			level |= 4;	/* safety min speed 4 */
 
+		if (tp_features.second_fan_ctl) {
+			if (!fan_select_fan2() ||
+			    !acpi_ec_write(fan_status_offset, level)) {
+				pr_warn("Couldn't set 2nd fan level, disabling support\n");
+				tp_features.second_fan_ctl = 0;
+			}
+			fan_select_fan1();
+
+		}
 		if (!acpi_ec_write(fan_status_offset, level))
 			return -EIO;
 		else
@@ -8763,6 +8739,7 @@ static const struct attribute_group fan_attr_group = {
 
 #define TPACPI_FAN_Q1	0x0001		/* Unitialized HFSP */
 #define TPACPI_FAN_2FAN	0x0002		/* EC 0x31 bit 0 selects fan2 */
+#define TPACPI_FAN_2CTL	0x0004		/* selects fan2 control */
 
 static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
 	TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1),
@@ -8771,6 +8748,13 @@ static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
 	TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1),
 	TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN),
 	TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN),
+	TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL),	/* P70 */
+	TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL),	/* P50 */
+	TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL),	/* P71 */
+	TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL),	/* P51 */
+	TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL),	/* P52 / P72 */
+	TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL),	/* P1 / X1 Extreme (1st gen) */
+	TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL),	/* P1 / X1 Extreme (2nd gen) */
 };
 
 static int __init fan_init(struct ibm_init_struct *iibm)
@@ -8788,6 +8772,7 @@ static int __init fan_init(struct ibm_init_struct *iibm)
 	fan_watchdog_maxinterval = 0;
 	tp_features.fan_ctrl_status_undef = 0;
 	tp_features.second_fan = 0;
+	tp_features.second_fan_ctl = 0;
 	fan_control_desired_level = 7;
 
 	if (tpacpi_is_ibm()) {
@@ -8812,8 +8797,12 @@ static int __init fan_init(struct ibm_init_struct *iibm)
 				fan_quirk1_setup();
 			if (quirks & TPACPI_FAN_2FAN) {
 				tp_features.second_fan = 1;
-				dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
-					"secondary fan support enabled\n");
+				pr_info("secondary fan support enabled\n");
+			}
+			if (quirks & TPACPI_FAN_2CTL) {
+				tp_features.second_fan = 1;
+				tp_features.second_fan_ctl = 1;
+				pr_info("secondary fan control enabled\n");
 			}
 		} else {
 			pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n");
@@ -9148,7 +9137,7 @@ static int fan_write(char *buf)
 	char *cmd;
 	int rc = 0;
 
-	while (!rc && (cmd = next_cmd(&buf))) {
+	while (!rc && (cmd = strsep(&buf, ","))) {
 		if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
 		      fan_write_cmd_level(cmd, &rc)) &&
 		    !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
@@ -9271,10 +9260,8 @@ static int mute_led_init(struct ibm_init_struct *iibm)
 		mute_led_cdev[i].brightness = ledtrig_audio_get(i);
 		err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]);
 		if (err < 0) {
-			while (i--) {
-				if (led_tables[i].state >= 0)
-					led_classdev_unregister(&mute_led_cdev[i]);
-			}
+			while (i--)
+				led_classdev_unregister(&mute_led_cdev[i]);
 			return err;
 		}
 	}
@@ -9286,10 +9273,8 @@ static void mute_led_exit(void)
 	int i;
 
 	for (i = 0; i < TPACPI_LED_MAX; i++) {
-		if (led_tables[i].state >= 0) {
-			led_classdev_unregister(&mute_led_cdev[i]);
-			tpacpi_led_set(i, false);
-		}
+		led_classdev_unregister(&mute_led_cdev[i]);
+		tpacpi_led_set(i, false);
 	}
 }
 
@@ -9786,19 +9771,18 @@ static int lcdshadow_read(struct seq_file *m)
 static int lcdshadow_write(char *buf)
 {
 	char *cmd;
-	int state = -1;
+	int res, state = -EINVAL;
 
 	if (lcdshadow_state < 0)
 		return -ENODEV;
 
-	while ((cmd = next_cmd(&buf))) {
-		if (strlencmp(cmd, "0") == 0)
-			state = 0;
-		else if (strlencmp(cmd, "1") == 0)
-			state = 1;
+	while ((cmd = strsep(&buf, ","))) {
+		res = kstrtoint(cmd, 10, &state);
+		if (res < 0)
+			return res;
 	}
 
-	if (state == -1)
+	if (state >= 2 || state < 0)
 		return -EINVAL;
 
 	return lcdshadow_set(state);
@@ -10314,10 +10298,9 @@ static int __init set_ibm_param(const char *val, const struct kernel_param *kp)
 			continue;
 
 		if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
-			if (strlen(val) > sizeof(ibms_init[i].param) - 2)
+			if (strlen(val) > sizeof(ibms_init[i].param) - 1)
 				return -ENOSPC;
 			strcpy(ibms_init[i].param, val);
-			strcat(ibms_init[i].param, ",");
 			return 0;
 		}
 	}
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index 808944546739..1ddab5a6dead 100644
--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -205,9 +205,6 @@ struct toshiba_acpi_dev {
 	unsigned int special_functions;
 
 	bool kbd_event_generated;
-	bool kbd_led_registered;
-	bool illumination_led_registered;
-	bool eco_led_registered;
 	bool killswitch;
 };
 
@@ -458,7 +455,6 @@ static void toshiba_illumination_available(struct toshiba_acpi_dev *dev)
 	acpi_status status;
 
 	dev->illumination_supported = 0;
-	dev->illumination_led_registered = false;
 
 	if (!sci_open(dev))
 		return;
@@ -528,7 +524,6 @@ static void toshiba_kbd_illum_available(struct toshiba_acpi_dev *dev)
 	acpi_status status;
 
 	dev->kbd_illum_supported = 0;
-	dev->kbd_led_registered = false;
 	dev->kbd_event_generated = false;
 
 	if (!sci_open(dev))
@@ -673,7 +668,6 @@ static void toshiba_eco_mode_available(struct toshiba_acpi_dev *dev)
 	acpi_status status;
 
 	dev->eco_supported = 0;
-	dev->eco_led_registered = false;
 
 	status = tci_raw(dev, in, out);
 	if (ACPI_FAILURE(status)) {
@@ -2993,14 +2987,9 @@ static int toshiba_acpi_remove(struct acpi_device *acpi_dev)
 
 	backlight_device_unregister(dev->backlight_dev);
 
-	if (dev->illumination_led_registered)
-		led_classdev_unregister(&dev->led_dev);
-
-	if (dev->kbd_led_registered)
-		led_classdev_unregister(&dev->kbd_led);
-
-	if (dev->eco_led_registered)
-		led_classdev_unregister(&dev->eco_led);
+	led_classdev_unregister(&dev->led_dev);
+	led_classdev_unregister(&dev->kbd_led);
+	led_classdev_unregister(&dev->eco_led);
 
 	if (dev->wwan_rfk) {
 		rfkill_unregister(dev->wwan_rfk);
@@ -3092,8 +3081,7 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
 		dev->led_dev.max_brightness = 1;
 		dev->led_dev.brightness_set = toshiba_illumination_set;
 		dev->led_dev.brightness_get = toshiba_illumination_get;
-		if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev))
-			dev->illumination_led_registered = true;
+		led_classdev_register(&acpi_dev->dev, &dev->led_dev);
 	}
 
 	toshiba_eco_mode_available(dev);
@@ -3102,8 +3090,7 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
 		dev->eco_led.max_brightness = 1;
 		dev->eco_led.brightness_set = toshiba_eco_mode_set_status;
 		dev->eco_led.brightness_get = toshiba_eco_mode_get_status;
-		if (!led_classdev_register(&dev->acpi_dev->dev, &dev->eco_led))
-			dev->eco_led_registered = true;
+		led_classdev_register(&dev->acpi_dev->dev, &dev->eco_led);
 	}
 
 	toshiba_kbd_illum_available(dev);
@@ -3119,8 +3106,7 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
 		dev->kbd_led.max_brightness = 1;
 		dev->kbd_led.brightness_set = toshiba_kbd_backlight_set;
 		dev->kbd_led.brightness_get = toshiba_kbd_backlight_get;
-		if (!led_classdev_register(&dev->acpi_dev->dev, &dev->kbd_led))
-			dev->kbd_led_registered = true;
+		led_classdev_register(&dev->acpi_dev->dev, &dev->kbd_led);
 	}
 
 	ret = toshiba_touchpad_get(dev, &dummy);
diff --git a/drivers/platform/x86/touchscreen_dmi.c b/drivers/platform/x86/touchscreen_dmi.c
index 6ec8923dec1a..5c223015ee71 100644
--- a/drivers/platform/x86/touchscreen_dmi.c
+++ b/drivers/platform/x86/touchscreen_dmi.c
@@ -373,6 +373,23 @@ static const struct ts_dmi_data jumper_ezpad_mini3_data = {
 	.properties	= jumper_ezpad_mini3_props,
 };
 
+static const struct property_entry mpman_mpwin895cl_props[] = {
+	PROPERTY_ENTRY_U32("touchscreen-min-x", 3),
+	PROPERTY_ENTRY_U32("touchscreen-min-y", 9),
+	PROPERTY_ENTRY_U32("touchscreen-size-x", 1728),
+	PROPERTY_ENTRY_U32("touchscreen-size-y", 1150),
+	PROPERTY_ENTRY_BOOL("touchscreen-inverted-y"),
+	PROPERTY_ENTRY_STRING("firmware-name", "gsl3680-mpman-mpwin895cl.fw"),
+	PROPERTY_ENTRY_U32("silead,max-fingers", 10),
+	PROPERTY_ENTRY_BOOL("silead,home-button"),
+	{ }
+};
+
+static const struct ts_dmi_data mpman_mpwin895cl_data = {
+	.acpi_name	= "MSSL1680:00",
+	.properties	= mpman_mpwin895cl_props,
+};
+
 static const struct property_entry myria_my8307_props[] = {
 	PROPERTY_ENTRY_U32("touchscreen-size-x", 1720),
 	PROPERTY_ENTRY_U32("touchscreen-size-y", 1140),
@@ -448,6 +465,24 @@ static const struct ts_dmi_data onda_v820w_32g_data = {
 	.properties	= onda_v820w_32g_props,
 };
 
+static const struct property_entry onda_v891_v5_props[] = {
+	PROPERTY_ENTRY_U32("touchscreen-size-x", 1715),
+	PROPERTY_ENTRY_U32("touchscreen-size-y", 1140),
+	PROPERTY_ENTRY_BOOL("touchscreen-inverted-x"),
+	PROPERTY_ENTRY_BOOL("touchscreen-inverted-y"),
+	PROPERTY_ENTRY_BOOL("touchscreen-swapped-x-y"),
+	PROPERTY_ENTRY_STRING("firmware-name",
+			      "gsl3676-onda-v891-v5.fw"),
+	PROPERTY_ENTRY_U32("silead,max-fingers", 10),
+	PROPERTY_ENTRY_BOOL("silead,home-button"),
+	{ }
+};
+
+static const struct ts_dmi_data onda_v891_v5_data = {
+	.acpi_name	= "MSSL1680:00",
+	.properties	= onda_v891_v5_props,
+};
+
 static const struct property_entry onda_v891w_v1_props[] = {
 	PROPERTY_ENTRY_U32("touchscreen-min-x", 46),
 	PROPERTY_ENTRY_U32("touchscreen-min-y",  8),
@@ -588,6 +623,22 @@ static const struct ts_dmi_data schneider_sct101ctm_data = {
 	.properties	= schneider_sct101ctm_props,
 };
 
+static const struct property_entry techbite_arc_11_6_props[] = {
+	PROPERTY_ENTRY_U32("touchscreen-min-x", 5),
+	PROPERTY_ENTRY_U32("touchscreen-min-y", 7),
+	PROPERTY_ENTRY_U32("touchscreen-size-x", 1981),
+	PROPERTY_ENTRY_U32("touchscreen-size-y", 1270),
+	PROPERTY_ENTRY_BOOL("touchscreen-inverted-y"),
+	PROPERTY_ENTRY_STRING("firmware-name", "gsl1680-techbite-arc-11-6.fw"),
+	PROPERTY_ENTRY_U32("silead,max-fingers", 10),
+	{ }
+};
+
+static const struct ts_dmi_data techbite_arc_11_6_data = {
+	.acpi_name	= "MSSL1680:00",
+	.properties	= techbite_arc_11_6_props,
+};
+
 static const struct property_entry teclast_x3_plus_props[] = {
 	PROPERTY_ENTRY_U32("touchscreen-size-x", 1980),
 	PROPERTY_ENTRY_U32("touchscreen-size-y", 1500),
@@ -662,11 +713,14 @@ static const struct ts_dmi_data trekstor_primetab_t13b_data = {
 };
 
 static const struct property_entry trekstor_surftab_twin_10_1_props[] = {
-	PROPERTY_ENTRY_U32("touchscreen-size-x", 1900),
+	PROPERTY_ENTRY_U32("touchscreen-min-x", 20),
+	PROPERTY_ENTRY_U32("touchscreen-min-y", 0),
+	PROPERTY_ENTRY_U32("touchscreen-size-x", 1890),
 	PROPERTY_ENTRY_U32("touchscreen-size-y", 1280),
 	PROPERTY_ENTRY_U32("touchscreen-inverted-y", 1),
 	PROPERTY_ENTRY_STRING("firmware-name", "gsl3670-surftab-twin-10-1-st10432-8.fw"),
 	PROPERTY_ENTRY_U32("silead,max-fingers", 10),
+	PROPERTY_ENTRY_BOOL("silead,home-button"),
 	{ }
 };
 
@@ -691,6 +745,20 @@ static const struct ts_dmi_data trekstor_surftab_wintron70_data = {
 	.properties	= trekstor_surftab_wintron70_props,
 };
 
+static const struct property_entry vinga_twizzle_j116_props[] = {
+	PROPERTY_ENTRY_U32("touchscreen-size-x", 1920),
+	PROPERTY_ENTRY_U32("touchscreen-size-y", 1280),
+	PROPERTY_ENTRY_STRING("firmware-name", "gsl1680-vinga-twizzle_j116.fw"),
+	PROPERTY_ENTRY_U32("silead,max-fingers", 10),
+	PROPERTY_ENTRY_BOOL("silead,home-button"),
+	{ }
+};
+
+static const struct ts_dmi_data vinga_twizzle_j116_data = {
+	.acpi_name	= "MSSL1680:00",
+	.properties	= vinga_twizzle_j116_props,
+};
+
 /* NOTE: Please keep this table sorted alphabetically */
 const struct dmi_system_id touchscreen_dmi_table[] = {
 	{
@@ -909,6 +977,14 @@ const struct dmi_system_id touchscreen_dmi_table[] = {
 		},
 	},
 	{
+		/* MP Man MPWIN895CL */
+		.driver_data = (void *)&mpman_mpwin895cl_data,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "MPMAN"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MPWIN8900CL"),
+		},
+	},
+	{
 		/* Myria MY8307 */
 		.driver_data = (void *)&myria_my8307_data,
 		.matches = {
@@ -941,6 +1017,15 @@ const struct dmi_system_id touchscreen_dmi_table[] = {
 		},
 	},
 	{
+		/* ONDA V891 v5 */
+		.driver_data = (void *)&onda_v891_v5_data,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ONDA"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "ONDA Tablet"),
+			DMI_MATCH(DMI_BIOS_VERSION, "ONDA.D869CJABNRBA06"),
+		},
+	},
+	{
 		/* ONDA V891w revision P891WBEBV1B00 aka v1 */
 		.driver_data = (void *)&onda_v891w_v1_data,
 		.matches = {
@@ -1030,6 +1115,15 @@ const struct dmi_system_id touchscreen_dmi_table[] = {
 		},
 	},
 	{
+		/* Techbite Arc 11.6 */
+		.driver_data = (void *)&techbite_arc_11_6_data,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "mPTech"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "techBite Arc 11.6"),
+			DMI_MATCH(DMI_BOARD_NAME, "G8316_272B"),
+		},
+	},
+	{
 		/* Teclast X3 Plus */
 		.driver_data = (void *)&teclast_x3_plus_data,
 		.matches = {
@@ -1107,6 +1201,21 @@ const struct dmi_system_id touchscreen_dmi_table[] = {
 		},
 	},
 	{
+		/* Trekstor Yourbook C11B (same touchscreen as the Primebook C11) */
+		.driver_data = (void *)&trekstor_primebook_c11_data,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "TREKSTOR"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "YOURBOOK C11B"),
+		},
+	},
+	{
+		/* Vinga Twizzle J116 */
+		.driver_data = (void *)&vinga_twizzle_j116_data,
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "VINGA Twizzle J116"),
+		},
+	},
+	{
 		/* Yours Y8W81, same case and touchscreen as Chuwi Vi8 */
 		.driver_data = (void *)&chuwi_vi8_data,
 		.matches = {
@@ -1114,7 +1223,7 @@ const struct dmi_system_id touchscreen_dmi_table[] = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "Y8W81"),
 		},
 	},
-	{ },
+	{ }
 };
 
 static const struct ts_dmi_data *ts_data;
diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index 941739db7199..d88f388a3450 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -111,11 +111,11 @@ static struct platform_driver acpi_wmi_driver = {
 
 static bool find_guid(const char *guid_string, struct wmi_block **out)
 {
-	uuid_le guid_input;
+	guid_t guid_input;
 	struct wmi_block *wblock;
 	struct guid_block *block;
 
-	if (uuid_le_to_bin(guid_string, &guid_input))
+	if (guid_parse(guid_string, &guid_input))
 		return false;
 
 	list_for_each_entry(wblock, &wmi_block_list, list) {
@@ -134,7 +134,7 @@ static const void *find_guid_context(struct wmi_block *wblock,
 				      struct wmi_driver *wdriver)
 {
 	const struct wmi_device_id *id;
-	uuid_le guid_input;
+	guid_t guid_input;
 
 	if (wblock == NULL || wdriver == NULL)
 		return NULL;
@@ -143,7 +143,7 @@ static const void *find_guid_context(struct wmi_block *wblock,
 
 	id = wdriver->id_table;
 	while (*id->guid_string) {
-		if (uuid_le_to_bin(id->guid_string, &guid_input))
+		if (guid_parse(id->guid_string, &guid_input))
 			continue;
 		if (!memcmp(wblock->gblock.guid, &guid_input, 16))
 			return id->context;
@@ -202,7 +202,7 @@ static acpi_status wmi_method_enable(struct wmi_block *wblock, int enable)
 /**
  * set_required_buffer_size - Sets the buffer size needed for performing IOCTL
  * @wdev: A wmi bus device from a driver
- * @instance: Instance index
+ * @length: Required buffer size
  *
  * Allocates memory needed for buffer, stores the buffer size in that memory
  */
@@ -222,8 +222,8 @@ EXPORT_SYMBOL_GPL(set_required_buffer_size);
  * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
  * @instance: Instance index
  * @method_id: Method ID to call
- * &in: Buffer containing input for the method call
- * &out: Empty buffer to return the method results
+ * @in: Buffer containing input for the method call
+ * @out: Empty buffer to return the method results
  *
  * Call an ACPI-WMI method
  */
@@ -244,8 +244,8 @@ EXPORT_SYMBOL_GPL(wmi_evaluate_method);
  * @wdev: A wmi bus device from a driver
  * @instance: Instance index
  * @method_id: Method ID to call
- * &in: Buffer containing input for the method call
- * &out: Empty buffer to return the method results
+ * @in: Buffer containing input for the method call
+ * @out: Empty buffer to return the method results
  *
  * Call an ACPI-WMI method
  */
@@ -364,7 +364,7 @@ static acpi_status __query_block(struct wmi_block *wblock, u8 instance,
  * wmi_query_block - Return contents of a WMI block (deprecated)
  * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
  * @instance: Instance index
- * &out: Empty buffer to return the contents of the data block to
+ * @out: Empty buffer to return the contents of the data block to
  *
  * Return the contents of an ACPI-WMI data block to a buffer
  */
@@ -399,7 +399,7 @@ EXPORT_SYMBOL_GPL(wmidev_block_query);
  * wmi_set_block - Write to a WMI block
  * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
  * @instance: Instance index
- * &in: Buffer containing new values for the data block
+ * @in: Buffer containing new values for the data block
  *
  * Write the contents of the input buffer to an ACPI-WMI data block
  */
@@ -510,6 +510,7 @@ static void wmi_notify_debug(u32 value, void *context)
 
 /**
  * wmi_install_notify_handler - Register handler for WMI events
+ * @guid: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
  * @handler: Function to handle notifications
  * @data: Data to be returned to handler when event is fired
  *
@@ -520,12 +521,12 @@ wmi_notify_handler handler, void *data)
 {
 	struct wmi_block *block;
 	acpi_status status = AE_NOT_EXIST;
-	uuid_le guid_input;
+	guid_t guid_input;
 
 	if (!guid || !handler)
 		return AE_BAD_PARAMETER;
 
-	if (uuid_le_to_bin(guid, &guid_input))
+	if (guid_parse(guid, &guid_input))
 		return AE_BAD_PARAMETER;
 
 	list_for_each_entry(block, &wmi_block_list, list) {
@@ -552,6 +553,7 @@ EXPORT_SYMBOL_GPL(wmi_install_notify_handler);
 
 /**
  * wmi_uninstall_notify_handler - Unregister handler for WMI events
+ * @guid: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
  *
  * Unregister handler for events sent to the ACPI-WMI mapper device.
  */
@@ -559,12 +561,12 @@ acpi_status wmi_remove_notify_handler(const char *guid)
 {
 	struct wmi_block *block;
 	acpi_status status = AE_NOT_EXIST;
-	uuid_le guid_input;
+	guid_t guid_input;
 
 	if (!guid)
 		return AE_BAD_PARAMETER;
 
-	if (uuid_le_to_bin(guid, &guid_input))
+	if (guid_parse(guid, &guid_input))
 		return AE_BAD_PARAMETER;
 
 	list_for_each_entry(block, &wmi_block_list, list) {
@@ -795,9 +797,9 @@ static int wmi_dev_match(struct device *dev, struct device_driver *driver)
 		return 0;
 
 	while (*id->guid_string) {
-		uuid_le driver_guid;
+		guid_t driver_guid;
 
-		if (WARN_ON(uuid_le_to_bin(id->guid_string, &driver_guid)))
+		if (WARN_ON(guid_parse(id->guid_string, &driver_guid)))
 			continue;
 		if (!memcmp(&driver_guid, wblock->gblock.guid, 16))
 			return 1;
@@ -1116,8 +1118,7 @@ static void wmi_free_devices(struct acpi_device *device)
 	}
 }
 
-static bool guid_already_parsed(struct acpi_device *device,
-				const u8 *guid)
+static bool guid_already_parsed(struct acpi_device *device, const u8 *guid)
 {
 	struct wmi_block *wblock;
 
@@ -1327,10 +1328,8 @@ static void acpi_wmi_notify_handler(acpi_handle handle, u32 event,
 		wblock->handler(event, wblock->handler_data);
 	}
 
-	if (debug_event) {
-		pr_info("DEBUG Event GUID: %pUL\n",
-			wblock->gblock.guid);
-	}
+	if (debug_event)
+		pr_info("DEBUG Event GUID: %pUL\n", wblock->gblock.guid);
 
 	acpi_bus_generate_netlink_event(
 		wblock->acpi_device->pnp.device_class,