Merge tag 'acpi-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "These update the ACPICA kernel code to upstream revision 20210730,
  clean up the ACPI companion binding code, optimize the I2C handling in
  the XPower PMIC driver, add 16550-compatible Serial Port Subtype
  support to the SPCR parsing code, add a few LoongArch support bits,
  add a ne quirk to the button driver, add new PCH FIVR methods to the
  DPTF code, replace deprecated CPU-hotplug functions in the processor
  driver, improve the acpi_os_map_memory() handling on non-x86 and do
  some assorted cleanups.

  Specifics:

   - Update ACPICA code in the kernel to upstream revision 20210730
     including the following changes:
       - Add support for the AEST table (data compiler) to iASL (Bob
         Moore)
       - Fix an if statement (add parens) (Bob Moore)
       - Drop trailing semicolon from some macros (Bob Moore)
       - Fix compilation of WPBT table with no command-line arguments in
         iASL (Bob Moore)
       - Add method name "_DIS" for use with aslmethod.c (Bob Moore)
       - Add new DBG2 Serial Port Subtypes (Marcin Wojtas)

   - Add new PCH FIVR methods to the DPTF code (Srinivas Pandruvada)

   - Add support for the new 16550-compatible Serial Port Subtype to the
     SPCR table parsing code (Marcin Wojtas)

   - Add DMI quirk for Lenovo Yoga 9 (14INTL5) to the ACPI button driver
     (Ulrich Huber)

   - Add LoongArch support for ACPI_PROCESSOR/ACPI_NUMA (Huacai Chen)

   - Add memory semantics to acpi_os_map_memory() (Lorenzo Pieralisi)

   - Replace deprecated CPU-hotplug functions in the ACPI processor
     driver (Sebastian Andrzej Siewior)

   - Optimize I2C-bus handling in the XPower PMIC driver (Hans de Goede)

   - Make platform-profile catch profile changes initiated by user space
     and notify user processes of them (Hans de Goede)

   - Clean up the ACPI companion binding and unbinding code and update
     debug messaging in the ACPI power resources code (Rafael Wysocki)

   - Clean up a couple of code pieces related to configfs (Andy
     Shevchenko)

   - Rearrange the FPDT table parsing code to avoid printing warning
     messages for reserved record types (Adrian Huang)"

* tag 'acpi-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (27 commits)
  ACPI: power: Drop name from struct acpi_power_resource
  ACPI: power: Use acpi_handle_debug() to print debug messages
  ACPI: tables: FPDT: Do not print FW_BUG message if record types are reserved
  ACPI: button: Add DMI quirk for Lenovo Yoga 9 (14INTL5)
  ACPI: Add memory semantics to acpi_os_map_memory()
  ACPI: SPCR: Add support for the new 16550-compatible Serial Port Subtype
  ACPI: platform-profile: call sysfs_notify() from platform_profile_store()
  ACPICA: Update version to 20210730
  ACPICA: Add method name "_DIS" For use with aslmethod.c
  ACPICA: iASL: Fix for WPBT table with no command-line arguments
  ACPICA: Headers: Add new DBG2 Serial Port Subtypes
  ACPICA: Macros should not use a trailing semicolon
  ACPICA: Fix an if statement (add parens)
  ACPICA: iASL: Add support for the AEST table (data compiler)
  ACPI: processor: Replace deprecated CPU-hotplug functions
  ACPI: DPTF: Add new PCH FIVR methods
  ACPI: configfs: Make get_header() to return error pointer
  ACPI: configfs: Use sysfs_emit() in "show" functions
  driver core: Split device_platform_notify()
  software nodes: Split software_node_notify()
  ...

18 files changed, 169 insertions, 116 deletions

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 8f9940f40baa..1da360c51d66 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -280,9 +280,9 @@ config ACPI_CPPC_LIB
 
 config ACPI_PROCESSOR
 	tristate "Processor"
-	depends on X86 || IA64 || ARM64
+	depends on X86 || IA64 || ARM64 || LOONGARCH
 	select ACPI_PROCESSOR_IDLE
-	select ACPI_CPU_FREQ_PSS if X86 || IA64
+	select ACPI_CPU_FREQ_PSS if X86 || IA64 || LOONGARCH
 	default y
 	help
 	  This driver adds support for the ACPI Processor package. It is required
diff --git a/drivers/acpi/acpi_configfs.c b/drivers/acpi/acpi_configfs.c
index 76b83b181356..c970792b11a4 100644
--- a/drivers/acpi/acpi_configfs.c
+++ b/drivers/acpi/acpi_configfs.c
@@ -70,7 +70,7 @@ static inline struct acpi_table_header *get_header(struct config_item *cfg)
 	if (!table->header)
 		pr_err("table not loaded\n");
 
-	return table->header;
+	return table->header ?: ERR_PTR(-EINVAL);
 }
 
 static ssize_t acpi_table_aml_read(struct config_item *cfg,
@@ -78,8 +78,8 @@ static ssize_t acpi_table_aml_read(struct config_item *cfg,
 {
 	struct acpi_table_header *h = get_header(cfg);
 
-	if (!h)
-		return -EINVAL;
+	if (IS_ERR(h))
+		return PTR_ERR(h);
 
 	if (data)
 		memcpy(data, h, h->length);
@@ -100,60 +100,60 @@ static ssize_t acpi_table_signature_show(struct config_item *cfg, char *str)
 {
 	struct acpi_table_header *h = get_header(cfg);
 
-	if (!h)
-		return -EINVAL;
+	if (IS_ERR(h))
+		return PTR_ERR(h);
 
-	return sprintf(str, "%.*s\n", ACPI_NAMESEG_SIZE, h->signature);
+	return sysfs_emit(str, "%.*s\n", ACPI_NAMESEG_SIZE, h->signature);
 }
 
 static ssize_t acpi_table_length_show(struct config_item *cfg, char *str)
 {
 	struct acpi_table_header *h = get_header(cfg);
 
-	if (!h)
-		return -EINVAL;
+	if (IS_ERR(h))
+		return PTR_ERR(h);
 
-	return sprintf(str, "%d\n", h->length);
+	return sysfs_emit(str, "%d\n", h->length);
 }
 
 static ssize_t acpi_table_revision_show(struct config_item *cfg, char *str)
 {
 	struct acpi_table_header *h = get_header(cfg);
 
-	if (!h)
-		return -EINVAL;
+	if (IS_ERR(h))
+		return PTR_ERR(h);
 
-	return sprintf(str, "%d\n", h->revision);
+	return sysfs_emit(str, "%d\n", h->revision);
 }
 
 static ssize_t acpi_table_oem_id_show(struct config_item *cfg, char *str)
 {
 	struct acpi_table_header *h = get_header(cfg);
 
-	if (!h)
-		return -EINVAL;
+	if (IS_ERR(h))
+		return PTR_ERR(h);
 
-	return sprintf(str, "%.*s\n", ACPI_OEM_ID_SIZE, h->oem_id);
+	return sysfs_emit(str, "%.*s\n", ACPI_OEM_ID_SIZE, h->oem_id);
 }
 
 static ssize_t acpi_table_oem_table_id_show(struct config_item *cfg, char *str)
 {
 	struct acpi_table_header *h = get_header(cfg);
 
-	if (!h)
-		return -EINVAL;
+	if (IS_ERR(h))
+		return PTR_ERR(h);
 
-	return sprintf(str, "%.*s\n", ACPI_OEM_TABLE_ID_SIZE, h->oem_table_id);
+	return sysfs_emit(str, "%.*s\n", ACPI_OEM_TABLE_ID_SIZE, h->oem_table_id);
 }
 
 static ssize_t acpi_table_oem_revision_show(struct config_item *cfg, char *str)
 {
 	struct acpi_table_header *h = get_header(cfg);
 
-	if (!h)
-		return -EINVAL;
+	if (IS_ERR(h))
+		return PTR_ERR(h);
 
-	return sprintf(str, "%d\n", h->oem_revision);
+	return sysfs_emit(str, "%d\n", h->oem_revision);
 }
 
 static ssize_t acpi_table_asl_compiler_id_show(struct config_item *cfg,
@@ -161,10 +161,10 @@ static ssize_t acpi_table_asl_compiler_id_show(struct config_item *cfg,
 {
 	struct acpi_table_header *h = get_header(cfg);
 
-	if (!h)
-		return -EINVAL;
+	if (IS_ERR(h))
+		return PTR_ERR(h);
 
-	return sprintf(str, "%.*s\n", ACPI_NAMESEG_SIZE, h->asl_compiler_id);
+	return sysfs_emit(str, "%.*s\n", ACPI_NAMESEG_SIZE, h->asl_compiler_id);
 }
 
 static ssize_t acpi_table_asl_compiler_revision_show(struct config_item *cfg,
@@ -172,10 +172,10 @@ static ssize_t acpi_table_asl_compiler_revision_show(struct config_item *cfg,
 {
 	struct acpi_table_header *h = get_header(cfg);
 
-	if (!h)
-		return -EINVAL;
+	if (IS_ERR(h))
+		return PTR_ERR(h);
 
-	return sprintf(str, "%d\n", h->asl_compiler_revision);
+	return sysfs_emit(str, "%d\n", h->asl_compiler_revision);
 }
 
 CONFIGFS_ATTR_RO(acpi_table_, signature);
diff --git a/drivers/acpi/acpi_fpdt.c b/drivers/acpi/acpi_fpdt.c
index 4ee2ad234e3d..6922a44b3ce7 100644
--- a/drivers/acpi/acpi_fpdt.c
+++ b/drivers/acpi/acpi_fpdt.c
@@ -220,8 +220,8 @@ static int fpdt_process_subtable(u64 address, u32 subtable_type)
 			break;
 
 		default:
-			pr_err(FW_BUG "Invalid record %d found.\n", record_header->type);
-			return -EINVAL;
+			/* Other types are reserved in ACPI 6.4 spec. */
+			break;
 		}
 	}
 	return 0;
@@ -254,8 +254,7 @@ static int __init acpi_init_fpdt(void)
 					      subtable->type);
 			break;
 		default:
-			pr_info(FW_BUG "Invalid subtable type %d found.\n",
-			       subtable->type);
+			/* Other types are reserved in ACPI 6.4 spec. */
 			break;
 		}
 		offset += sizeof(*subtable);
diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c
index df4adeb335b2..f45979aa2d64 100644
--- a/drivers/acpi/acpi_pad.c
+++ b/drivers/acpi/acpi_pad.c
@@ -249,12 +249,12 @@ static void set_power_saving_task_num(unsigned int num)
 
 static void acpi_pad_idle_cpus(unsigned int num_cpus)
 {
-	get_online_cpus();
+	cpus_read_lock();
 
 	num_cpus = min_t(unsigned int, num_cpus, num_online_cpus());
 	set_power_saving_task_num(num_cpus);
 
-	put_online_cpus();
+	cpus_read_unlock();
 }
 
 static uint32_t acpi_pad_idle_cpus_num(void)
diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index 2d5bd2a6ddce..6737b1cbf6d6 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -182,7 +182,7 @@ static int acpi_processor_hotadd_init(struct acpi_processor *pr)
 		return -ENODEV;
 
 	cpu_maps_update_begin();
-	cpu_hotplug_begin();
+	cpus_write_lock();
 
 	ret = acpi_map_cpu(pr->handle, pr->phys_id, pr->acpi_id, &pr->id);
 	if (ret)
@@ -203,7 +203,7 @@ static int acpi_processor_hotadd_init(struct acpi_processor *pr)
 	pr->flags.need_hotplug_init = 1;
 
 out:
-	cpu_hotplug_done();
+	cpus_write_unlock();
 	cpu_maps_update_done();
 	return ret;
 }
@@ -454,13 +454,13 @@ static void acpi_processor_remove(struct acpi_device *device)
 	per_cpu(processors, pr->id) = NULL;
 
 	cpu_maps_update_begin();
-	cpu_hotplug_begin();
+	cpus_write_lock();
 
 	/* Remove the CPU. */
 	arch_unregister_cpu(pr->id);
 	acpi_unmap_cpu(pr->id);
 
-	cpu_hotplug_done();
+	cpus_write_unlock();
 	cpu_maps_update_done();
 
 	try_offline_node(cpu_to_node(pr->id));
diff --git a/drivers/acpi/acpica/dswexec.c b/drivers/acpi/acpica/dswexec.c
index 41ba7773fd10..f2d2267054af 100644
--- a/drivers/acpi/acpica/dswexec.c
+++ b/drivers/acpi/acpica/dswexec.c
@@ -561,11 +561,10 @@ acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state)
 								op->common.
 								node->object,
 								NULL);
-				if ACPI_FAILURE
-					(status) {
+				if (ACPI_FAILURE(status)) {
 					ACPI_EXCEPTION((AE_INFO, status,
 							"While writing to buffer field"));
-					}
+				}
 			}
 			ACPI_FREE(namepath);
 			status = AE_OK;
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index f854bcb8d010..3abb4373d11b 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -498,24 +498,24 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
 	acpi_evaluate_ost(handle, type, ost_code, NULL);
 }
 
-static void acpi_device_notify(acpi_handle handle, u32 event, void *data)
+static void acpi_notify_device(acpi_handle handle, u32 event, void *data)
 {
 	struct acpi_device *device = data;
 
 	device->driver->ops.notify(device, event);
 }
 
-static void acpi_device_notify_fixed(void *data)
+static void acpi_notify_device_fixed(void *data)
 {
 	struct acpi_device *device = data;
 
 	/* Fixed hardware devices have no handles */
-	acpi_device_notify(NULL, ACPI_FIXED_HARDWARE_EVENT, device);
+	acpi_notify_device(NULL, ACPI_FIXED_HARDWARE_EVENT, device);
 }
 
 static u32 acpi_device_fixed_event(void *data)
 {
-	acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_device_notify_fixed, data);
+	acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_notify_device_fixed, data);
 	return ACPI_INTERRUPT_HANDLED;
 }
 
@@ -536,7 +536,7 @@ static int acpi_device_install_notify_handler(struct acpi_device *device)
 	else
 		status = acpi_install_notify_handler(device->handle,
 						     ACPI_DEVICE_NOTIFY,
-						     acpi_device_notify,
+						     acpi_notify_device,
 						     device);
 
 	if (ACPI_FAILURE(status))
@@ -554,7 +554,7 @@ static void acpi_device_remove_notify_handler(struct acpi_device *device)
 						acpi_device_fixed_event);
 	else
 		acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
-					   acpi_device_notify);
+					   acpi_notify_device);
 }
 
 /* Handle events targeting \_SB device (at present only graceful shutdown) */
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index f25bd336113b..1f9b9a4c38c7 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -79,6 +79,17 @@ static const struct dmi_system_id dmi_lid_quirks[] = {
 	},
 	{
 		/*
+		 * Lenovo Yoga 9 14ITL5, initial notification of the LID device
+		 * never happens.
+		 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "82BG"),
+		},
+		.driver_data = (void *)(long)ACPI_BUTTON_LID_INIT_OPEN,
+	},
+	{
+		/*
 		 * Medion Akoya E2215T, notification of the LID device only
 		 * happens on close, not on open and _LID always returns closed.
 		 */
diff --git a/drivers/acpi/dptf/dptf_pch_fivr.c b/drivers/acpi/dptf/dptf_pch_fivr.c
index 550b9081fcbc..f4e9c2ef2f88 100644
--- a/drivers/acpi/dptf/dptf_pch_fivr.c
+++ b/drivers/acpi/dptf/dptf_pch_fivr.c
@@ -90,15 +90,24 @@ static ssize_t name##_store(struct device *dev,\
 
 PCH_FIVR_SHOW(freq_mhz_low_clock, GFC0)
 PCH_FIVR_SHOW(freq_mhz_high_clock, GFC1)
+PCH_FIVR_SHOW(ssc_clock_info, GEMI)
+PCH_FIVR_SHOW(fivr_switching_freq_mhz, GFCS)
+PCH_FIVR_SHOW(fivr_switching_fault_status, GFFS)
 PCH_FIVR_STORE(freq_mhz_low_clock, RFC0)
 PCH_FIVR_STORE(freq_mhz_high_clock, RFC1)
 
 static DEVICE_ATTR_RW(freq_mhz_low_clock);
 static DEVICE_ATTR_RW(freq_mhz_high_clock);
+static DEVICE_ATTR_RO(ssc_clock_info);
+static DEVICE_ATTR_RO(fivr_switching_freq_mhz);
+static DEVICE_ATTR_RO(fivr_switching_fault_status);
 
 static struct attribute *fivr_attrs[] = {
 	&dev_attr_freq_mhz_low_clock.attr,
 	&dev_attr_freq_mhz_high_clock.attr,
+	&dev_attr_ssc_clock_info.attr,
+	&dev_attr_fivr_switching_freq_mhz.attr,
+	&dev_attr_fivr_switching_fault_status.attr,
 	NULL
 };
 
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index fce3f3bba714..7a33a6d985f8 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -285,29 +285,27 @@ int acpi_unbind_one(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(acpi_unbind_one);
 
-static int acpi_device_notify(struct device *dev)
+void acpi_device_notify(struct device *dev)
 {
 	struct acpi_bus_type *type = acpi_get_bus_type(dev);
 	struct acpi_device *adev;
 	int ret;
 
 	ret = acpi_bind_one(dev, NULL);
-	if (ret && type) {
-		struct acpi_device *adev;
+	if (ret) {
+		if (!type)
+			goto err;
 
 		adev = type->find_companion(dev);
 		if (!adev) {
-			pr_debug("Unable to get handle for %s\n", dev_name(dev));
-			ret = -ENODEV;
-			goto out;
+			dev_dbg(dev, "ACPI companion not found\n");
+			goto err;
 		}
 		ret = acpi_bind_one(dev, adev);
 		if (ret)
-			goto out;
+			goto err;
 	}
 	adev = ACPI_COMPANION(dev);
-	if (!adev)
-		goto out;
 
 	if (dev_is_platform(dev))
 		acpi_configure_pmsi_domain(dev);
@@ -317,27 +315,22 @@ static int acpi_device_notify(struct device *dev)
 	else if (adev->handler && adev->handler->bind)
 		adev->handler->bind(dev);
 
- out:
-	if (!ret) {
-		struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+	acpi_handle_debug(ACPI_HANDLE(dev), "Bound to device %s\n",
+			  dev_name(dev));
 
-		acpi_get_name(ACPI_HANDLE(dev), ACPI_FULL_PATHNAME, &buffer);
-		pr_debug("Device %s -> %s\n", dev_name(dev), (char *)buffer.pointer);
-		kfree(buffer.pointer);
-	} else {
-		pr_debug("Device %s -> No ACPI support\n", dev_name(dev));
-	}
+	return;
 
-	return ret;
+err:
+	dev_dbg(dev, "No ACPI support\n");
 }
 
-static int acpi_device_notify_remove(struct device *dev)
+void acpi_device_notify_remove(struct device *dev)
 {
 	struct acpi_device *adev = ACPI_COMPANION(dev);
 	struct acpi_bus_type *type;
 
 	if (!adev)
-		return 0;
+		return;
 
 	type = acpi_get_bus_type(dev);
 	if (type && type->cleanup)
@@ -346,20 +339,4 @@ static int acpi_device_notify_remove(struct device *dev)
 		adev->handler->unbind(dev);
 
 	acpi_unbind_one(dev);
-	return 0;
-}
-
-int acpi_platform_notify(struct device *dev, enum kobject_action action)
-{
-	switch (action) {
-	case KOBJ_ADD:
-		acpi_device_notify(dev);
-		break;
-	case KOBJ_REMOVE:
-		acpi_device_notify_remove(dev);
-		break;
-	default:
-		break;
-	}
-	return 0;
 }
diff --git a/drivers/acpi/numa/Kconfig b/drivers/acpi/numa/Kconfig
index fcf2e556d69d..39b1f34c21df 100644
--- a/drivers/acpi/numa/Kconfig
+++ b/drivers/acpi/numa/Kconfig
@@ -2,7 +2,7 @@
 config ACPI_NUMA
 	bool "NUMA support"
 	depends on NUMA
-	depends on (X86 || IA64 || ARM64)
+	depends on (X86 || IA64 || ARM64 || LOONGARCH)
 	default y if IA64 || ARM64
 
 config ACPI_HMAT
diff --git a/drivers/acpi/numa/srat.c b/drivers/acpi/numa/srat.c
index 6021a1013442..b8795fc49097 100644
--- a/drivers/acpi/numa/srat.c
+++ b/drivers/acpi/numa/srat.c
@@ -206,7 +206,7 @@ int __init srat_disabled(void)
 	return acpi_numa < 0;
 }
 
-#if defined(CONFIG_X86) || defined(CONFIG_ARM64)
+#if defined(CONFIG_X86) || defined(CONFIG_ARM64) || defined(CONFIG_LOONGARCH)
 /*
  * Callback for SLIT parsing.  pxm_to_node() returns NUMA_NO_NODE for
  * I/O localities since SRAT does not list them.  I/O localities are
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 45c5c0e45e33..a43f1521efe6 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -284,7 +284,8 @@ acpi_map_lookup_virt(void __iomem *virt, acpi_size size)
 #define should_use_kmap(pfn)   page_is_ram(pfn)
 #endif
 
-static void __iomem *acpi_map(acpi_physical_address pg_off, unsigned long pg_sz)
+static void __iomem *acpi_map(acpi_physical_address pg_off, unsigned long pg_sz,
+			      bool memory)
 {
 	unsigned long pfn;
 
@@ -294,7 +295,8 @@ static void __iomem *acpi_map(acpi_physical_address pg_off, unsigned long pg_sz)
 			return NULL;
 		return (void __iomem __force *)kmap(pfn_to_page(pfn));
 	} else
-		return acpi_os_ioremap(pg_off, pg_sz);
+		return memory ? acpi_os_memmap(pg_off, pg_sz) :
+				acpi_os_ioremap(pg_off, pg_sz);
 }
 
 static void acpi_unmap(acpi_physical_address pg_off, void __iomem *vaddr)
@@ -309,9 +311,10 @@ static void acpi_unmap(acpi_physical_address pg_off, void __iomem *vaddr)
 }
 
 /**
- * acpi_os_map_iomem - Get a virtual address for a given physical address range.
+ * __acpi_os_map_iomem - Get a virtual address for a given physical address range.
  * @phys: Start of the physical address range to map.
  * @size: Size of the physical address range to map.
+ * @memory: true if remapping memory, false if IO
  *
  * Look up the given physical address range in the list of existing ACPI memory
  * mappings.  If found, get a reference to it and return a pointer to it (its
@@ -321,8 +324,8 @@ static void acpi_unmap(acpi_physical_address pg_off, void __iomem *vaddr)
  * During early init (when acpi_permanent_mmap has not been set yet) this
  * routine simply calls __acpi_map_table() to get the job done.
  */
-void __iomem __ref
-*acpi_os_map_iomem(acpi_physical_address phys, acpi_size size)
+static void __iomem __ref
+*__acpi_os_map_iomem(acpi_physical_address phys, acpi_size size, bool memory)
 {
 	struct acpi_ioremap *map;
 	void __iomem *virt;
@@ -353,7 +356,7 @@ void __iomem __ref
 
 	pg_off = round_down(phys, PAGE_SIZE);
 	pg_sz = round_up(phys + size, PAGE_SIZE) - pg_off;
-	virt = acpi_map(phys, size);
+	virt = acpi_map(phys, size, memory);
 	if (!virt) {
 		mutex_unlock(&acpi_ioremap_lock);
 		kfree(map);
@@ -372,11 +375,17 @@ out:
 	mutex_unlock(&acpi_ioremap_lock);
 	return map->virt + (phys - map->phys);
 }
+
+void __iomem *__ref
+acpi_os_map_iomem(acpi_physical_address phys, acpi_size size)
+{
+	return __acpi_os_map_iomem(phys, size, false);
+}
 EXPORT_SYMBOL_GPL(acpi_os_map_iomem);
 
 void *__ref acpi_os_map_memory(acpi_physical_address phys, acpi_size size)
 {
-	return (void *)acpi_os_map_iomem(phys, size);
+	return (void *)__acpi_os_map_iomem(phys, size, true);
 }
 EXPORT_SYMBOL_GPL(acpi_os_map_memory);
 
diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
index dd2fbf38e414..d418462ab791 100644
--- a/drivers/acpi/platform_profile.c
+++ b/drivers/acpi/platform_profile.c
@@ -106,6 +106,9 @@ static ssize_t platform_profile_store(struct device *dev,
 	}
 
 	err = cur_profile->profile_set(cur_profile, i);
+	if (!err)
+		sysfs_notify(acpi_kobj, NULL, "platform_profile");
+
 	mutex_unlock(&profile_lock);
 	if (err)
 		return err;
diff --git a/drivers/acpi/pmic/intel_pmic_xpower.c b/drivers/acpi/pmic/intel_pmic_xpower.c
index a091d5a8392c..cbe08e600fa3 100644
--- a/drivers/acpi/pmic/intel_pmic_xpower.c
+++ b/drivers/acpi/pmic/intel_pmic_xpower.c
@@ -178,15 +178,17 @@ static int intel_xpower_pmic_update_power(struct regmap *regmap, int reg,
 {
 	int data, ret;
 
-	/* GPIO1 LDO regulator needs special handling */
-	if (reg == XPOWER_GPI1_CTRL)
-		return regmap_update_bits(regmap, reg, GPI1_LDO_MASK,
-					  on ? GPI1_LDO_ON : GPI1_LDO_OFF);
-
 	ret = iosf_mbi_block_punit_i2c_access();
 	if (ret)
 		return ret;
 
+	/* GPIO1 LDO regulator needs special handling */
+	if (reg == XPOWER_GPI1_CTRL) {
+		ret = regmap_update_bits(regmap, reg, GPI1_LDO_MASK,
+					 on ? GPI1_LDO_ON : GPI1_LDO_OFF);
+		goto out;
+	}
+
 	if (regmap_read(regmap, reg, &data)) {
 		ret = -EIO;
 		goto out;
@@ -234,6 +236,11 @@ static int intel_xpower_pmic_get_raw_temp(struct regmap *regmap, int reg)
 		return ret;
 
 	if (adc_ts_pin_ctrl & AXP288_ADC_TS_CURRENT_ON_OFF_MASK) {
+		/*
+		 * AXP288_ADC_TS_PIN_CTRL reads are cached by the regmap, so
+		 * this does to a single I2C-transfer, and thus there is no
+		 * need to explicitly call iosf_mbi_block_punit_i2c_access().
+		 */
 		ret = regmap_update_bits(regmap, AXP288_ADC_TS_PIN_CTRL,
 					 AXP288_ADC_TS_CURRENT_ON_OFF_MASK,
 					 AXP288_ADC_TS_CURRENT_ON_ONDEMAND);
@@ -244,6 +251,10 @@ static int intel_xpower_pmic_get_raw_temp(struct regmap *regmap, int reg)
 		usleep_range(6000, 10000);
 	}
 
+	ret = iosf_mbi_block_punit_i2c_access();
+	if (ret)
+		return ret;
+
 	ret = regmap_bulk_read(regmap, AXP288_GP_ADC_H, buf, 2);
 	if (ret == 0)
 		ret = (buf[0] << 4) + ((buf[1] >> 4) & 0x0f);
@@ -254,6 +265,31 @@ static int intel_xpower_pmic_get_raw_temp(struct regmap *regmap, int reg)
 				   AXP288_ADC_TS_CURRENT_ON);
 	}
 
+	iosf_mbi_unblock_punit_i2c_access();
+
+	return ret;
+}
+
+static int intel_xpower_exec_mipi_pmic_seq_element(struct regmap *regmap,
+						   u16 i2c_address, u32 reg_address,
+						   u32 value, u32 mask)
+{
+	int ret;
+
+	if (i2c_address != 0x34) {
+		pr_err("%s: Unexpected i2c-addr: 0x%02x (reg-addr 0x%x value 0x%x mask 0x%x)\n",
+		       __func__, i2c_address, reg_address, value, mask);
+		return -ENXIO;
+	}
+
+	ret = iosf_mbi_block_punit_i2c_access();
+	if (ret)
+		return ret;
+
+	ret = regmap_update_bits(regmap, reg_address, mask, value);
+
+	iosf_mbi_unblock_punit_i2c_access();
+
 	return ret;
 }
 
@@ -261,6 +297,7 @@ static struct intel_pmic_opregion_data intel_xpower_pmic_opregion_data = {
 	.get_power = intel_xpower_pmic_get_power,
 	.update_power = intel_xpower_pmic_update_power,
 	.get_raw_temp = intel_xpower_pmic_get_raw_temp,
+	.exec_mipi_pmic_seq_element = intel_xpower_exec_mipi_pmic_seq_element,
 	.power_table = power_table,
 	.power_table_count = ARRAY_SIZE(power_table),
 	.thermal_table = thermal_table,
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index eba7785047ca..b9863e22b952 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -48,7 +48,6 @@ struct acpi_power_dependent_device {
 struct acpi_power_resource {
 	struct acpi_device device;
 	struct list_head list_node;
-	char *name;
 	u32 system_level;
 	u32 order;
 	unsigned int ref_count;
@@ -70,6 +69,11 @@ static DEFINE_MUTEX(power_resource_list_lock);
                              Power Resource Management
    -------------------------------------------------------------------------- */
 
+static inline const char *resource_dev_name(struct acpi_power_resource *pr)
+{
+	return dev_name(&pr->device.dev);
+}
+
 static inline
 struct acpi_power_resource *to_power_resource(struct acpi_device *device)
 {
@@ -264,7 +268,8 @@ acpi_power_resource_add_dependent(struct acpi_power_resource *resource,
 
 	dep->dev = dev;
 	list_add_tail(&dep->node, &resource->dependents);
-	dev_dbg(dev, "added power dependency to [%s]\n", resource->name);
+	dev_dbg(dev, "added power dependency to [%s]\n",
+		resource_dev_name(resource));
 
 unlock:
 	mutex_unlock(&resource->resource_lock);
@@ -283,7 +288,7 @@ acpi_power_resource_remove_dependent(struct acpi_power_resource *resource,
 			list_del(&dep->node);
 			kfree(dep);
 			dev_dbg(dev, "removed power dependency to [%s]\n",
-				resource->name);
+				resource_dev_name(resource));
 			break;
 		}
 	}
@@ -356,10 +361,11 @@ void acpi_device_power_remove_dependent(struct acpi_device *adev,
 
 static int __acpi_power_on(struct acpi_power_resource *resource)
 {
+	acpi_handle handle = resource->device.handle;
 	struct acpi_power_dependent_device *dep;
 	acpi_status status = AE_OK;
 
-	status = acpi_evaluate_object(resource->device.handle, "_ON", NULL, NULL);
+	status = acpi_evaluate_object(handle, "_ON", NULL, NULL);
 	if (ACPI_FAILURE(status)) {
 		resource->state = ACPI_POWER_RESOURCE_STATE_UNKNOWN;
 		return -ENODEV;
@@ -367,7 +373,7 @@ static int __acpi_power_on(struct acpi_power_resource *resource)
 
 	resource->state = ACPI_POWER_RESOURCE_STATE_ON;
 
-	pr_debug("Power resource [%s] turned on\n", resource->name);
+	acpi_handle_debug(handle, "Power resource turned on\n");
 
 	/*
 	 * If there are other dependents on this power resource we need to
@@ -380,7 +386,7 @@ static int __acpi_power_on(struct acpi_power_resource *resource)
 
 	list_for_each_entry(dep, &resource->dependents, node) {
 		dev_dbg(dep->dev, "runtime resuming because [%s] turned on\n",
-			resource->name);
+			resource_dev_name(resource));
 		pm_request_resume(dep->dev);
 	}
 
@@ -392,7 +398,8 @@ static int acpi_power_on_unlocked(struct acpi_power_resource *resource)
 	int result = 0;
 
 	if (resource->ref_count++) {
-		pr_debug("Power resource [%s] already on\n", resource->name);
+		acpi_handle_debug(resource->device.handle,
+				  "Power resource already on\n");
 	} else {
 		result = __acpi_power_on(resource);
 		if (result)
@@ -413,10 +420,10 @@ static int acpi_power_on(struct acpi_power_resource *resource)
 
 static int __acpi_power_off(struct acpi_power_resource *resource)
 {
+	acpi_handle handle = resource->device.handle;
 	acpi_status status;
 
-	status = acpi_evaluate_object(resource->device.handle, "_OFF",
-				      NULL, NULL);
+	status = acpi_evaluate_object(handle, "_OFF", NULL, NULL);
 	if (ACPI_FAILURE(status)) {
 		resource->state = ACPI_POWER_RESOURCE_STATE_UNKNOWN;
 		return -ENODEV;
@@ -424,7 +431,7 @@ static int __acpi_power_off(struct acpi_power_resource *resource)
 
 	resource->state = ACPI_POWER_RESOURCE_STATE_OFF;
 
-	pr_debug("Power resource [%s] turned off\n", resource->name);
+	acpi_handle_debug(handle, "Power resource turned off\n");
 
 	return 0;
 }
@@ -434,12 +441,14 @@ static int acpi_power_off_unlocked(struct acpi_power_resource *resource)
 	int result = 0;
 
 	if (!resource->ref_count) {
-		pr_debug("Power resource [%s] already off\n", resource->name);
+		acpi_handle_debug(resource->device.handle,
+				  "Power resource already off\n");
 		return 0;
 	}
 
 	if (--resource->ref_count) {
-		pr_debug("Power resource [%s] still in use\n", resource->name);
+		acpi_handle_debug(resource->device.handle,
+				  "Power resource still in use\n");
 	} else {
 		result = __acpi_power_off(resource);
 		if (result)
@@ -949,7 +958,6 @@ struct acpi_device *acpi_add_power_resource(acpi_handle handle)
 	mutex_init(&resource->resource_lock);
 	INIT_LIST_HEAD(&resource->list_node);
 	INIT_LIST_HEAD(&resource->dependents);
-	resource->name = device->pnp.bus_id;
 	strcpy(acpi_device_name(device), ACPI_POWER_DEVICE_NAME);
 	strcpy(acpi_device_class(device), ACPI_POWER_CLASS);
 	device->power.state = ACPI_STATE_UNKNOWN;
@@ -1004,7 +1012,7 @@ void acpi_resume_power_resources(void)
 
 		if (state == ACPI_POWER_RESOURCE_STATE_OFF
 		    && resource->ref_count) {
-			dev_dbg(&resource->device.dev, "Turning ON\n");
+			acpi_handle_debug(resource->device.handle, "Turning ON\n");
 			__acpi_power_on(resource);
 		}
 
@@ -1034,7 +1042,7 @@ void acpi_turn_off_unused_power_resources(void)
 		 */
 		if (!resource->ref_count &&
 		    resource->state != ACPI_POWER_RESOURCE_STATE_OFF) {
-			dev_dbg(&resource->device.dev, "Turning OFF\n");
+			acpi_handle_debug(resource->device.handle, "Turning OFF\n");
 			__acpi_power_off(resource);
 		}
 
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 095c8aca141e..f37fba9e5ba0 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -1301,7 +1301,7 @@ int acpi_processor_power_state_has_changed(struct acpi_processor *pr)
 	if (pr->id == 0 && cpuidle_get_driver() == &acpi_idle_driver) {
 
 		/* Protect against cpu-hotplug */
-		get_online_cpus();
+		cpus_read_lock();
 		cpuidle_pause_and_lock();
 
 		/* Disable all cpuidle devices */
@@ -1330,7 +1330,7 @@ int acpi_processor_power_state_has_changed(struct acpi_processor *pr)
 			}
 		}
 		cpuidle_resume_and_unlock();
-		put_online_cpus();
+		cpus_read_unlock();
 	}
 
 	return 0;
diff --git a/drivers/acpi/spcr.c b/drivers/acpi/spcr.c
index 88460bacd5ae..25c2d0be953e 100644
--- a/drivers/acpi/spcr.c
+++ b/drivers/acpi/spcr.c
@@ -136,6 +136,7 @@ int __init acpi_parse_spcr(bool enable_earlycon, bool enable_console)
 		break;
 	case ACPI_DBG2_16550_COMPATIBLE:
 	case ACPI_DBG2_16550_SUBSET:
+	case ACPI_DBG2_16550_WITH_GAS:
 		uart = "uart";
 		break;
 	default: