Merge branches 'acpi-video', 'acpi-misc' and 'acpi-docs'

Merge ACPI backlight driver changes, miscellaneous ACPI-related changes
and ACPI-related documentation updates for 6.3-rc1:

 - Fix Lenovo Ideapad Z570 DMI match in the ACPI backlight driver (Hans
   de Goede).

 - Silence missing prototype warnings in some places in the ACPI-related
   code (Ammar Faizi).

 - Make kobj_type structures used in the ACPI code constant (Thomas
   Weißschuh).

 - Correct spelling in firmware-guide/ACPI (Randy Dunlap).

 - Clarify the meaning of Explicit and Implicit in the _DSD GPIO
   properties documentation (Andy Shevchenko).

* acpi-video:
  ACPI: video: Fix Lenovo Ideapad Z570 DMI match

* acpi-misc:
  ACPI: make kobj_type structures constant
  ACPI: Silence missing prototype warnings

* acpi-docs:
  Documentation: firmware-guide: gpio-properties: Clarify Explicit and Implicit
  Documentation: firmware-guide/ACPI: correct spelling

Author: rafaeljw

Documentation/firmware-guide/acpi/acpi-lid.rst

@@ -34,7 +34,7 @@ state upon the last _LID evaluation. There won't be difference when the
 _LID control method is evaluated during the runtime, the problem is its
 initial returning value. When the AML tables implement this control method
 with cached value, the initial returning value is likely not reliable.
-There are platforms always retun "closed" as initial lid state.
+There are platforms always return "closed" as initial lid state.
 
 Restrictions of the lid state change notifications
 ==================================================

Documentation/firmware-guide/acpi/gpio-properties.rst

@@ -67,17 +67,30 @@ state of the output pin which driver should use during its initialization.
 Linux tries to use common sense here and derives the state from the bias
 and polarity settings. The table below shows the expectations:
 
-=========  =============  ==============
-Pull Bias     Polarity     Requested...
-=========  =============  ==============
-Implicit     x            AS IS (assumed firmware configured for us)
-Explicit     x (no _DSD)  as Pull Bias (Up == High, Down == Low),
-                          assuming non-active (Polarity = !Pull Bias)
-Down         Low          as low, assuming active
-Down         High         as low, assuming non-active
-Up           Low          as high, assuming non-active
-Up           High         as high, assuming active
-=========  =============  ==============
++-------------+-------------+-----------------------------------------------+
+| Pull Bias   | Polarity    | Requested...                                  |
++=============+=============+===============================================+
+| Implicit                                                                  |
++-------------+-------------+-----------------------------------------------+
+| **Default** | x           | AS IS (assumed firmware configured it for us) |
++-------------+-------------+-----------------------------------------------+
+| Explicit                                                                  |
++-------------+-------------+-----------------------------------------------+
+| **None**    | x           | AS IS (assumed firmware configured it for us) |
+|             |             | with no Pull Bias                             |
++-------------+-------------+-----------------------------------------------+
+| **Up**      | x (no _DSD) |                                               |
+|             +-------------+ as high, assuming non-active                  |
+|             | Low         |                                               |
+|             +-------------+-----------------------------------------------+
+|             | High        | as high, assuming active                      |
++-------------+-------------+-----------------------------------------------+
+| **Down**    | x (no _DSD) |                                               |
+|             +-------------+ as low, assuming non-active                   |
+|             | High        |                                               |
+|             +-------------+-----------------------------------------------+
+|             | Low         | as low, assuming active                       |
++-------------+-------------+-----------------------------------------------+
 
 That said, for our above example the both GPIOs, since the bias setting
 is explicit and _DSD is present, will be treated as active with a high

Documentation/firmware-guide/acpi/namespace.rst

@@ -31,7 +31,7 @@ Description Table).  The XSDT always points to the FADT (Fixed ACPI
 Description Table) using its first entry, the data within the FADT
 includes various fixed-length entries that describe fixed ACPI features
 of the hardware.  The FADT contains a pointer to the DSDT
-(Differentiated System Descripition Table).  The XSDT also contains
+(Differentiated System Description Table).  The XSDT also contains
 entries pointing to possibly multiple SSDTs (Secondary System
 Description Table).
 

drivers/acpi/acpi_lpit.c

@@ -10,6 +10,7 @@
 #include <linux/acpi.h>
 #include <asm/msr.h>
 #include <asm/tsc.h>
+#include "internal.h"
 
 struct lpit_residency_info {
 	struct acpi_generic_address gaddr;

drivers/acpi/cppc_acpi.c

@@ -193,7 +193,7 @@ static struct attribute *cppc_attrs[] = {
 };
 ATTRIBUTE_GROUPS(cppc);
 
-static struct kobj_type cppc_ktype = {
+static const struct kobj_type cppc_ktype = {
 	.sysfs_ops = &kobj_sysfs_ops,
 	.default_groups = cppc_groups,
 };

drivers/acpi/device_sysfs.c

@@ -78,7 +78,7 @@ static void acpi_data_node_release(struct kobject *kobj)
 	complete(&dn->kobj_done);
 }
 
-static struct kobj_type acpi_data_node_ktype = {
+static const struct kobj_type acpi_data_node_ktype = {
 	.sysfs_ops = &acpi_data_node_sysfs_ops,
 	.default_groups = acpi_data_node_default_groups,
 	.release = acpi_data_node_release,

drivers/acpi/ioapic.c

@@ -24,6 +24,7 @@
 #include <linux/acpi.h>
 #include <linux/pci.h>
 #include <acpi/acpi.h>
+#include "internal.h"
 
 struct acpi_pci_ioapic {
 	acpi_handle	root_handle;

drivers/acpi/sysfs.c

@@ -953,7 +953,7 @@ static struct attribute *hotplug_profile_attrs[] = {
 };
 ATTRIBUTE_GROUPS(hotplug_profile);
 
-static struct kobj_type acpi_hotplug_profile_ktype = {
+static const struct kobj_type acpi_hotplug_profile_ktype = {
 	.sysfs_ops = &kobj_sysfs_ops,
 	.default_groups = hotplug_profile_groups,
 };

drivers/acpi/video_detect.c

@@ -434,7 +434,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 	 /* Lenovo Ideapad Z570 */
 	 .matches = {
 		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-		DMI_MATCH(DMI_PRODUCT_NAME, "102434U"),
+		DMI_MATCH(DMI_PRODUCT_VERSION, "Ideapad Z570"),
 		},
 	},
 	{