Merge tag 'acpi-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "These update the ACPICA code in the kernel to upstream revision
  20230331, fix the ACPI SBS driver and the evaluation of the _PDC
  method on Xen dom0 in the ACPI processor driver, update the ACPI
  driver for Intel SoCs and clean up code in multiple places.

  Specifics:

   - Update the ACPICA code in the kernel to upstream revision 20230331
     including the following changes:
       * Delete bogus node_array array of pointers from AEST table
         (Jessica Clarke)
       * Add support for trace buffer extension in GICC to the ACPI MADT
         parser (Xiongfeng Wang)
       * Add missing macro ACPI_FUNCTION_TRACE() for
         acpi_ns_repair_HID() (Xiongfeng Wang)
       * Add missing tables to astable (Pedro Falcato)
       * Add support for 64 bit loong_arch compilation to ACPICA (Huacai
         Chen)
       * Add support for ASPT table in disassembler to ACPICA (Jeremi
         Piotrowski)
       * Add support for Arm's MPAM ACPI table version 2 (Hesham
         Almatary)
       * Update all copyrights/signons in ACPICA to 2023 (Bob Moore)
       * Add support for ClockInput resource (v6.5) (Niyas Sait)
       * Add RISC-V INTC interrupt controller definition to the list of
         supported interrupt controllers for MADT (Sunil V L)
       * Add structure definitions for the RISC-V RHCT ACPI table (Sunil
         V L)
       * Address several cases in which the ACPICA code might lead to
         undefined behavior (Tamir Duberstein)
       * Make ACPICA code support flexible arrays properly (Kees Cook)
       * Check null return of ACPI_ALLOCATE_ZEROED in
         acpi_db_display_objects() (void0red)
       * Add os specific support for Zephyr RTOS to ACPICA (Najumon)
       * Update version to 20230331 (Bob Moore)

   - Fix evaluating the _PDC ACPI control method when running as Xen
     dom0 (Roger Pau Monne)

   - Use platform devices to load ACPI PPC and PCC drivers (Petr Pavlu)

   - Check for null return of devm_kzalloc() in fch_misc_setup() (Kang
     Chen)

   - Log a message if enable_irq_wake() fails for the ACPI SCI (Simon
     Gaiser)

   - Initialize the correct IOMMU fwspec while parsing ACPI VIOT
     (Jean-Philippe Brucker)

   - Amend indentation and prefix error messages with FW_BUG in the ACPI
     SPCR parsing code (Andy Shevchenko)

   - Enable ACPI sysfs support for CCEL records (Kuppuswamy
     Sathyanarayanan)

   - Make the APEI error injection code warn on invalid arguments when
     explicitly indicated by platform (Shuai Xue)

   - Add CXL error types to the error injection code in APEI (Tony Luck)

   - Refactor acpi_data_prop_read_single() (Andy Shevchenko)

   - Fix two issues in the ACPI SBS driver (Armin Wolf)

   - Replace ternary operator with min_t() in the generic ACPI thermal
     zone driver (Jiangshan Yi)

   - Ensure that ACPI notify handlers are not running after removal and
     clean up code in acpi_sb_notify() (Rafael Wysocki)

   - Remove register_backlight_delay module option and code and remove
     quirks for false-positive backlight control support advertised on
     desktop boards (Hans de Goede)

   - Replace irqdomain.h include with struct declarations in ACPI
     headers and update several pieces of code previously including of.h
     implicitly through those headers (Rob Herring)

   - Fix acpi_evaluate_dsm_typed() redefinition error (Kiran K)

   - Update the pm_profile sysfs attribute documentation (Rafael
     Wysocki)

   - Add 8086228 ACPI _HID for second PWM controller on Cherry Trail to
     the ACPI driver for Intel SoCs (Hans de Goede)"

* tag 'acpi-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (64 commits)
  ACPI: LPSS: Add 8086228 ACPI _HID for second PWM controller on Cherry Trail
  ACPI: bus: Ensure that notify handlers are not running after removal
  ACPI: bus: Add missing braces to acpi_sb_notify()
  ACPI: video: Remove desktops without backlight DMI quirks
  ACPI: video: Remove register_backlight_delay module option and code
  ACPI: Replace irqdomain.h include with struct declarations
  fpga: lattice-sysconfig-spi: Add explicit include for of.h
  tpm: atmel: Add explicit include for of.h
  virtio-mmio: Add explicit include for of.h
  pata: ixp4xx: Add explicit include for of.h
  ata: pata_macio: Add explicit include of irqdomain.h
  serial: 8250_tegra: Add explicit include for of.h
  net: rfkill-gpio: Add explicit include for of.h
  staging: iio: resolver: ad2s1210: Add explicit include for of.h
  iio: adc: ad7292: Add explicit include for of.h
  ACPICA: Update version to 20230331
  ACPICA: add os specific support for Zephyr RTOS
  ACPICA: ACPICA: check null return of ACPI_ALLOCATE_ZEROED in acpi_db_display_objects
  ACPICA: acpi_resource_irq: Replace 1-element arrays with flexible array
  ACPICA: acpi_madt_oem_data: Fix flexible array member definition
  ...

Author: torvalds

Documentation/ABI/stable/sysfs-acpi-pmprofile

@@ -2,16 +2,17 @@ What:		/sys/firmware/acpi/pm_profile
 Date:		03-Nov-2011
 KernelVersion:	v3.2
 Contact:	linux-acpi@vger.kernel.org
-Description:	The ACPI pm_profile sysfs interface exports the platform
-		power management (and performance) requirement expectations
-		as provided by BIOS. The integer value is directly passed as
-		retrieved from the FADT ACPI table.
+Description:	The ACPI pm_profile sysfs interface exposes the preferred
+		power management (and performance) profile of the platform
+		as provided in the ACPI FADT Preferred_PM_Profile field.
 
-Values:	        For possible values see ACPI specification:
-		5.2.9 Fixed ACPI Description Table (FADT)
-		Field: Preferred_PM_Profile
+		The integer value is directly passed as retrieved from the FADT.
 
-		Currently these values are defined by spec:
+Values:	        For the possible values refer to the Preferred_PM_Profile field
+		definition in Table 5.9 "FADT Format", Section 5.2.9 "Fixed ACPI
+		Description Table (FADT)" of the ACPI specification.
+
+		As of ACPI 6.5, the following values are defined:
 
 		== =================
 		0  Unspecified
@@ -22,5 +23,6 @@ Values:	        For possible values see ACPI specification:
 		5  SOHO Server
 		6  Appliance PC
 		7  Performance Server
-		>7 Reserved
+		8  Tablet
+		>8 Reserved
 		== =================

drivers/acpi/acpi_apd.c

@@ -83,6 +83,8 @@ static int fch_misc_setup(struct apd_private_data *pdata)
 	if (!acpi_dev_get_property(adev, "clk-name", ACPI_TYPE_STRING, &obj)) {
 		clk_data->name = devm_kzalloc(&adev->dev, obj->string.length,
 					      GFP_KERNEL);
+		if (!clk_data->name)
+			return -ENOMEM;
 
 		strcpy(clk_data->name, obj->string.pointer);
 	} else {

drivers/acpi/acpi_lpss.c

@@ -271,6 +271,12 @@ static const struct lpss_device_desc bsw_pwm_dev_desc = {
 	.resume_from_noirq = true,
 };
 
+static const struct lpss_device_desc bsw_pwm2_dev_desc = {
+	.flags = LPSS_SAVE_CTX_ONCE | LPSS_NO_D3_DELAY,
+	.prv_offset = 0x800,
+	.resume_from_noirq = true,
+};
+
 static const struct lpss_device_desc byt_uart_dev_desc = {
 	.flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX,
 	.clk_con_id = "baudclk",
@@ -368,6 +374,7 @@ static const struct acpi_device_id acpi_lpss_device_ids[] = {
 	/* Braswell LPSS devices */
 	{ "80862286", LPSS_ADDR(lpss_dma_desc) },
 	{ "80862288", LPSS_ADDR(bsw_pwm_dev_desc) },
+	{ "80862289", LPSS_ADDR(bsw_pwm2_dev_desc) },
 	{ "8086228A", LPSS_ADDR(bsw_uart_dev_desc) },
 	{ "8086228E", LPSS_ADDR(bsw_spi_dev_desc) },
 	{ "808622C0", LPSS_ADDR(lpss_dma_desc) },

drivers/acpi/acpi_processor.c

@@ -15,6 +15,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/pci.h>
+#include <linux/platform_device.h>
 
 #include <acpi/processor.h>
 
@@ -148,6 +149,34 @@ static int acpi_processor_errata(void)
 	return result;
 }
 
+/* Create a platform device to represent a CPU frequency control mechanism. */
+static void cpufreq_add_device(const char *name)
+{
+	struct platform_device *pdev;
+
+	pdev = platform_device_register_simple(name, PLATFORM_DEVID_NONE, NULL, 0);
+	if (IS_ERR(pdev))
+		pr_info("%s device creation failed: %ld\n", name, PTR_ERR(pdev));
+}
+
+#ifdef CONFIG_X86
+/* Check presence of Processor Clocking Control by searching for \_SB.PCCH. */
+static void __init acpi_pcc_cpufreq_init(void)
+{
+	acpi_status status;
+	acpi_handle handle;
+
+	status = acpi_get_handle(NULL, "\\_SB", &handle);
+	if (ACPI_FAILURE(status))
+		return;
+
+	if (acpi_has_method(handle, "PCCH"))
+		cpufreq_add_device("pcc-cpufreq");
+}
+#else
+static void __init acpi_pcc_cpufreq_init(void) {}
+#endif /* CONFIG_X86 */
+
 /* Initialization */
 #ifdef CONFIG_ACPI_HOTPLUG_CPU
 int __weak acpi_map_cpu(acpi_handle handle,
@@ -280,14 +309,22 @@ static int acpi_processor_get_info(struct acpi_device *device)
 		dev_dbg(&device->dev, "Failed to get CPU physical ID.\n");
 
 	pr->id = acpi_map_cpuid(pr->phys_id, pr->acpi_id);
-	if (!cpu0_initialized && !acpi_has_cpu_in_madt()) {
+	if (!cpu0_initialized) {
 		cpu0_initialized = 1;
 		/*
 		 * Handle UP system running SMP kernel, with no CPU
 		 * entry in MADT
 		 */
-		if (invalid_logical_cpuid(pr->id) && (num_online_cpus() == 1))
+		if (!acpi_has_cpu_in_madt() && invalid_logical_cpuid(pr->id) &&
+		    (num_online_cpus() == 1))
 			pr->id = 0;
+		/*
+		 * Check availability of Processor Performance Control by
+		 * looking at the presence of the _PCT object under the first
+		 * processor definition.
+		 */
+		if (acpi_has_method(pr->handle, "_PCT"))
+			cpufreq_add_device("acpi-cpufreq");
 	}
 
 	/*
@@ -686,6 +723,7 @@ void __init acpi_processor_init(void)
 	acpi_processor_check_duplicates();
 	acpi_scan_add_handler_with_hotplug(&processor_handler, "processor");
 	acpi_scan_add_handler(&processor_container_handler);
+	acpi_pcc_cpufreq_init();
 }
 
 #ifdef CONFIG_ACPI_PROCESSOR_CSTATE

drivers/acpi/acpi_video.c

@@ -70,12 +70,6 @@ module_param(device_id_scheme, bool, 0444);
 static int only_lcd = -1;
 module_param(only_lcd, int, 0444);
 
-static int register_backlight_delay;
-module_param(register_backlight_delay, int, 0444);
-MODULE_PARM_DESC(register_backlight_delay,
-	"Delay in seconds before doing fallback (non GPU driver triggered) "
-	"backlight registration, set to 0 to disable.");
-
 static bool may_report_brightness_keys;
 static int register_count;
 static DEFINE_MUTEX(register_count_mutex);
@@ -84,9 +78,6 @@ static LIST_HEAD(video_bus_head);
 static int acpi_video_bus_add(struct acpi_device *device);
 static void acpi_video_bus_remove(struct acpi_device *device);
 static void acpi_video_bus_notify(struct acpi_device *device, u32 event);
-static void acpi_video_bus_register_backlight_work(struct work_struct *ignored);
-static DECLARE_DELAYED_WORK(video_bus_register_backlight_work,
-			    acpi_video_bus_register_backlight_work);
 
 /*
  * Indices in the _BCL method response: the first two items are special,
@@ -2096,11 +2087,6 @@ static void acpi_video_bus_remove(struct acpi_device *device)
 	kfree(video);
 }
 
-static void acpi_video_bus_register_backlight_work(struct work_struct *ignored)
-{
-	acpi_video_register_backlight();
-}
-
 static int __init is_i740(struct pci_dev *dev)
 {
 	if (dev->device == 0x00D1)
@@ -2183,17 +2169,6 @@ static bool should_check_lcd_flag(void)
 	return false;
 }
 
-/*
- * At least one graphics driver has reported that no LCD is connected
- * via the native interface. cancel the registration for fallback acpi_video0.
- * If another driver still deems this necessary, it can explicitly register it.
- */
-void acpi_video_report_nolcd(void)
-{
-	cancel_delayed_work(&video_bus_register_backlight_work);
-}
-EXPORT_SYMBOL(acpi_video_report_nolcd);
-
 int acpi_video_register(void)
 {
 	int ret = 0;
@@ -2222,18 +2197,6 @@ int acpi_video_register(void)
 	 */
 	register_count = 1;
 
-	/*
-	 * acpi_video_bus_add() skips registering the userspace visible
-	 * backlight_device. The intend is for this to be registered by the
-	 * drm/kms driver calling acpi_video_register_backlight() *after* it is
-	 * done setting up its own native backlight device. The delayed work
-	 * ensures that acpi_video_register_backlight() always gets called
-	 * eventually, in case there is no drm/kms driver or it is disabled.
-	 */
-	if (register_backlight_delay)
-		schedule_delayed_work(&video_bus_register_backlight_work,
-				      register_backlight_delay * HZ);
-
 leave:
 	mutex_unlock(&register_count_mutex);
 	return ret;
@@ -2244,7 +2207,6 @@ void acpi_video_unregister(void)
 {
 	mutex_lock(&register_count_mutex);
 	if (register_count) {
-		cancel_delayed_work_sync(&video_bus_register_backlight_work);
 		acpi_bus_unregister_driver(&acpi_video_bus);
 		register_count = 0;
 		may_report_brightness_keys = false;

drivers/acpi/acpica/acapps.h

@@ -3,7 +3,7 @@
  *
  * Module Name: acapps - common include for ACPI applications/tools
  *
- * Copyright (C) 2000 - 2022, Intel Corp.
+ * Copyright (C) 2000 - 2023, Intel Corp.
  *
  *****************************************************************************/
 

drivers/acpi/acpica/accommon.h

@@ -3,7 +3,7 @@
  *
  * Name: accommon.h - Common include files for generation of ACPICA source
  *
- * Copyright (C) 2000 - 2022, Intel Corp.
+ * Copyright (C) 2000 - 2023, Intel Corp.
  *
  *****************************************************************************/
 

drivers/acpi/acpica/acconvert.h

@@ -3,7 +3,7 @@
  *
  * Module Name: acapps - common include for ACPI applications/tools
  *
- * Copyright (C) 2000 - 2022, Intel Corp.
+ * Copyright (C) 2000 - 2023, Intel Corp.
  *
  *****************************************************************************/
 

drivers/acpi/acpica/acdebug.h

@@ -3,7 +3,7 @@
  *
  * Name: acdebug.h - ACPI/AML debugger
  *
- * Copyright (C) 2000 - 2022, Intel Corp.
+ * Copyright (C) 2000 - 2023, Intel Corp.
  *
  *****************************************************************************/
 

drivers/acpi/acpica/acdispat.h

@@ -3,7 +3,7 @@
  *
  * Name: acdispat.h - dispatcher (parser to interpreter interface)
  *
- * Copyright (C) 2000 - 2022, Intel Corp.
+ * Copyright (C) 2000 - 2023, Intel Corp.
  *
  *****************************************************************************/