Merge branches 'acpi-tables', 'acpi-bus' and 'acpi-processor'

* acpi-tables:
  ACPI: SPCR: Make SPCR available to x86
  ACPI / tables: Add IORT to injectable table list

* acpi-bus:
  ACPI / bus: Parse tables as term_list for Dell XPS 9570 and Precision M5530
  ACPI / scan: Use acpi_bus_get_status() to initialize ACPI_TYPE_DEVICE devs
  ACPI / bus: Do not call _STA on battery devices with unmet dependencies
  PCI: acpiphp_ibm: prepare for acpi_get_object_info() no longer returning status
  ACPI: export acpi_bus_get_status_handle()

* acpi-processor:
  ACPI / processor: Set default C1 idle state description
  ACPI: processor_perflib: Do not send _PPC change notification if not ready

drivers/acpi/Kconfig

@@ -79,7 +79,12 @@ config ACPI_DEBUGGER_USER
 endif
 
 config ACPI_SPCR_TABLE
-	bool
+	bool "ACPI Serial Port Console Redirection Support"
+	default y if X86
+	help
+	  Enable support for Serial Port Console Redirection (SPCR) Table.
+	  This table provides information about the configuration of the
+	  earlycon console.
 
 config ACPI_LPIT
 	bool

drivers/acpi/bus.c

@@ -66,10 +66,37 @@ static int set_copy_dsdt(const struct dmi_system_id *id)
 	return 0;
 }
 #endif
+static int set_gbl_term_list(const struct dmi_system_id *id)
+{
+	acpi_gbl_parse_table_as_term_list = 1;
+	return 0;
+}
 
-static const struct dmi_system_id dsdt_dmi_table[] __initconst = {
+static const struct dmi_system_id acpi_quirks_dmi_table[] __initconst = {
+	/*
+	 * Touchpad on Dell XPS 9570/Precision M5530 doesn't work under I2C
+	 * mode.
+	 * https://bugzilla.kernel.org/show_bug.cgi?id=198515
+	 */
+	{
+		.callback = set_gbl_term_list,
+		.ident = "Dell Precision M5530",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Precision M5530"),
+		},
+	},
+	{
+		.callback = set_gbl_term_list,
+		.ident = "Dell XPS 15 9570",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "XPS 15 9570"),
+		},
+	},
 	/*
 	 * Invoke DSDT corruption work-around on all Toshiba Satellite.
+	 * DSDT will be copied to memory.
 	 * https://bugzilla.kernel.org/show_bug.cgi?id=14679
 	 */
 	{
@@ -83,7 +110,7 @@ static const struct dmi_system_id dsdt_dmi_table[] __initconst = {
 	{}
 };
 #else
-static const struct dmi_system_id dsdt_dmi_table[] __initconst = {
+static const struct dmi_system_id acpi_quirks_dmi_table[] __initconst = {
 	{}
 };
 #endif
@@ -108,6 +135,7 @@ acpi_status acpi_bus_get_status_handle(acpi_handle handle,
 	}
 	return status;
 }
+EXPORT_SYMBOL_GPL(acpi_bus_get_status_handle);
 
 int acpi_bus_get_status(struct acpi_device *device)
 {
@@ -119,6 +147,12 @@ int acpi_bus_get_status(struct acpi_device *device)
 		return 0;
 	}
 
+	/* Battery devices must have their deps met before calling _STA */
+	if (acpi_device_is_battery(device) && device->dep_unmet) {
+		acpi_set_device_status(device, 0);
+		return 0;
+	}
+
 	status = acpi_bus_get_status_handle(device->handle, &sta);
 	if (ACPI_FAILURE(status))
 		return -ENODEV;
@@ -1001,11 +1035,8 @@ void __init acpi_early_init(void)
 
 	acpi_permanent_mmap = true;
 
-	/*
-	 * If the machine falls into the DMI check table,
-	 * DSDT will be copied to memory
-	 */
-	dmi_check_system(dsdt_dmi_table);
+	/* Check machine-specific quirks */
+	dmi_check_system(acpi_quirks_dmi_table);
 
 	status = acpi_reallocate_root_table();
 	if (ACPI_FAILURE(status)) {

drivers/acpi/processor_idle.c

@@ -291,6 +291,9 @@ static int acpi_processor_get_power_info_default(struct acpi_processor *pr)
 		pr->power.states[ACPI_STATE_C1].type = ACPI_STATE_C1;
 		pr->power.states[ACPI_STATE_C1].valid = 1;
 		pr->power.states[ACPI_STATE_C1].entry_method = ACPI_CSTATE_HALT;
+
+		snprintf(pr->power.states[ACPI_STATE_C1].desc,
+			 ACPI_CX_DESC_LEN, "ACPI HLT");
 	}
 	/* the C0 state only exists as a filler in our array */
 	pr->power.states[ACPI_STATE_C0].valid = 1;

drivers/acpi/processor_perflib.c

@@ -159,7 +159,7 @@ void acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag)
 {
 	int ret;
 
-	if (ignore_ppc) {
+	if (ignore_ppc || !pr->performance) {
 		/*
 		 * Only when it is notification event, the _OST object
 		 * will be evaluated. Otherwise it is skipped.

drivers/acpi/scan.c

@@ -1565,6 +1565,8 @@ void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
 	device_initialize(&device->dev);
 	dev_set_uevent_suppress(&device->dev, true);
 	acpi_init_coherency(device);
+	/* Assume there are unmet deps until acpi_device_dep_initialize() runs */
+	device->dep_unmet = 1;
 }
 
 void acpi_device_add_finalize(struct acpi_device *device)
@@ -1588,6 +1590,14 @@ static int acpi_add_single_object(struct acpi_device **child,
 	}
 
 	acpi_init_device_object(device, handle, type, sta);
+	/*
+	 * For ACPI_BUS_TYPE_DEVICE getting the status is delayed till here so
+	 * that we can call acpi_bus_get_status() and use its quirk handling.
+	 * Note this must be done before the get power-/wakeup_dev-flags calls.
+	 */
+	if (type == ACPI_BUS_TYPE_DEVICE)
+		acpi_bus_get_status(device);
+
 	acpi_bus_get_power_flags(device);
 	acpi_bus_get_wakeup_device_flags(device);
 
@@ -1660,9 +1670,11 @@ static int acpi_bus_type_and_status(acpi_handle handle, int *type,
 			return -ENODEV;
 
 		*type = ACPI_BUS_TYPE_DEVICE;
-		status = acpi_bus_get_status_handle(handle, sta);
-		if (ACPI_FAILURE(status))
-			*sta = 0;
+		/*
+		 * acpi_add_single_object updates this once we've an acpi_device
+		 * so that acpi_bus_get_status' quirk handling can be used.
+		 */
+		*sta = 0;
 		break;
 	case ACPI_TYPE_PROCESSOR:
 		*type = ACPI_BUS_TYPE_PROCESSOR;
@@ -1760,6 +1772,8 @@ static void acpi_device_dep_initialize(struct acpi_device *adev)
 	acpi_status status;
 	int i;
 
+	adev->dep_unmet = 0;
+
 	if (!acpi_has_method(adev->handle, "_DEP"))
 		return;
 

drivers/acpi/spcr.c

@@ -21,7 +21,7 @@
  * occasionally getting stuck as 1. To avoid the potential for a hang, check
  * TXFE == 0 instead of BUSY == 1. This may not be suitable for all UART
  * implementations, so only do so if an affected platform is detected in
- * parse_spcr().
+ * acpi_parse_spcr().
  */
 bool qdf2400_e44_present;
 EXPORT_SYMBOL(qdf2400_e44_present);
@@ -74,19 +74,21 @@ static bool xgene_8250_erratum_present(struct acpi_table_spcr *tb)
 }
 
 /**
- * parse_spcr() - parse ACPI SPCR table and add preferred console
+ * acpi_parse_spcr() - parse ACPI SPCR table and add preferred console
  *
- * @earlycon: set up earlycon for the console specified by the table
+ * @enable_earlycon: set up earlycon for the console specified by the table
+ * @enable_console: setup the console specified by the table.
  *
  * For the architectures with support for ACPI, CONFIG_ACPI_SPCR_TABLE may be
  * defined to parse ACPI SPCR table.  As a result of the parsing preferred
- * console is registered and if @earlycon is true, earlycon is set up.
+ * console is registered and if @enable_earlycon is true, earlycon is set up.
+ * If @enable_console is true the system console is also configured.
  *
  * When CONFIG_ACPI_SPCR_TABLE is defined, this function should be called
  * from arch initialization code as soon as the DT/ACPI decision is made.
  *
  */
-int __init parse_spcr(bool earlycon)
+int __init acpi_parse_spcr(bool enable_earlycon, bool enable_console)
 {
 	static char opts[64];
 	struct acpi_table_spcr *table;
@@ -105,11 +107,8 @@ int __init parse_spcr(bool earlycon)
 	if (ACPI_FAILURE(status))
 		return -ENOENT;
 
-	if (table->header.revision < 2) {
-		err = -ENOENT;
-		pr_err("wrong table version\n");
-		goto done;
-	}
+	if (table->header.revision < 2)
+		pr_info("SPCR table version %d\n", table->header.revision);
 
 	if (table->serial_port.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
 		switch (ACPI_ACCESS_BIT_WIDTH((
@@ -185,7 +184,7 @@ int __init parse_spcr(bool earlycon)
 	 */
 	if (qdf2400_erratum_44_present(&table->header)) {
 		qdf2400_e44_present = true;
-		if (earlycon)
+		if (enable_earlycon)
 			uart = "qdf2400_e44";
 	}
 
@@ -205,11 +204,13 @@ int __init parse_spcr(bool earlycon)
 
 	pr_info("console: %s\n", opts);
 
-	if (earlycon)
+	if (enable_earlycon)
 		setup_earlycon(opts);
 
-	err = add_preferred_console(uart, 0, opts + strlen(uart) + 1);
-
+	if (enable_console)
+		err = add_preferred_console(uart, 0, opts + strlen(uart) + 1);
+	else
+		err = 0;
 done:
 	acpi_put_table((struct acpi_table_header *)table);
 	return err;

drivers/acpi/tables.c

@@ -456,7 +456,8 @@ static const char * const table_sigs[] = {
 	ACPI_SIG_SLIC, ACPI_SIG_SPCR, ACPI_SIG_SPMI, ACPI_SIG_TCPA,
 	ACPI_SIG_UEFI, ACPI_SIG_WAET, ACPI_SIG_WDAT, ACPI_SIG_WDDT,
 	ACPI_SIG_WDRT, ACPI_SIG_DSDT, ACPI_SIG_FADT, ACPI_SIG_PSDT,
-	ACPI_SIG_RSDT, ACPI_SIG_XSDT, ACPI_SIG_SSDT, NULL };
+	ACPI_SIG_RSDT, ACPI_SIG_XSDT, ACPI_SIG_SSDT, ACPI_SIG_IORT,
+	NULL };
 
 #define ACPI_HEADER_SIZE sizeof(struct acpi_table_header)