Commit 703e7713 authored by Tzung-Bi Shih's avatar Tzung-Bi Shih
Browse files

platform/chrome: chromeos_acpi: support official HID GOOG0016 

Support official HID GOOG0016 for ChromeOS ACPI (see [1]).

[1]: https://crrev.com/c/2266713



Reviewed-by: default avatarSimon Glass <sjg@chromium.org>
Reviewed-by: default avatarMuhammad Usama Anjum <usama.anjum@collabora.com>
Reviewed-by: default avatarGuenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20230731024214.908235-1-tzungbi@kernel.org


Signed-off-by: default avatarTzung-Bi Shih <tzungbi@kernel.org>
parent f2d4dced

Documentation/ABI/testing/sysfs-driver-chromeos-acpi

+15 −0
Original line number Diff line number Diff line 
What:		/sys/bus/platform/devices/GGL0001:*/BINF.2

		/sys/bus/platform/devices/GOOG0016:*/BINF.2

Date:		May 2022

KernelVersion:	5.19

Description:
@@ -10,6 +11,7 @@ Description: 
		== ===============================



What:		/sys/bus/platform/devices/GGL0001:*/BINF.3

		/sys/bus/platform/devices/GOOG0016:*/BINF.3

Date:		May 2022

KernelVersion:	5.19

Description:
@@ -23,6 +25,7 @@ Description: 
		== =====================================



What:		/sys/bus/platform/devices/GGL0001:*/CHSW

		/sys/bus/platform/devices/GOOG0016:*/CHSW

Date:		May 2022

KernelVersion:	5.19

Description:
@@ -38,6 +41,7 @@ Description: 
		==== ===========================================



What:		/sys/bus/platform/devices/GGL0001:*/FMAP

		/sys/bus/platform/devices/GOOG0016:*/FMAP

Date:		May 2022

KernelVersion:	5.19

Description:
@@ -45,6 +49,7 @@ Description: 
		processor firmware flashmap.



What:		/sys/bus/platform/devices/GGL0001:*/FRID

		/sys/bus/platform/devices/GOOG0016:*/FRID

Date:		May 2022

KernelVersion:	5.19

Description:
@@ -52,6 +57,7 @@ Description: 
		main processor firmware.



What:		/sys/bus/platform/devices/GGL0001:*/FWID

		/sys/bus/platform/devices/GOOG0016:*/FWID

Date:		May 2022

KernelVersion:	5.19

Description:
@@ -59,6 +65,7 @@ Description: 
		main processor firmware.



What:		/sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.0

		/sys/bus/platform/devices/GOOG0016:*/GPIO.X/GPIO.0

Date:		May 2022

KernelVersion:	5.19

Description:
@@ -73,6 +80,7 @@ Description: 
		=========== ==================================



What:		/sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.1

		/sys/bus/platform/devices/GOOG0016:*/GPIO.X/GPIO.1

Date:		May 2022

KernelVersion:	5.19

Description:
@@ -84,6 +92,7 @@ Description: 
		== =======================



What:		/sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.2

		/sys/bus/platform/devices/GOOG0016:*/GPIO.X/GPIO.2

Date:		May 2022

KernelVersion:	5.19

Description:
@@ -91,18 +100,21 @@ Description: 
		controller.



What:		/sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.3

		/sys/bus/platform/devices/GOOG0016:*/GPIO.X/GPIO.3

Date:		May 2022

KernelVersion:	5.19

Description:

		Returns name of the GPIO controller.



What:		/sys/bus/platform/devices/GGL0001:*/HWID

		/sys/bus/platform/devices/GOOG0016:*/HWID

Date:		May 2022

KernelVersion:	5.19

Description:

		Returns hardware ID for the Chromebook.



What:		/sys/bus/platform/devices/GGL0001:*/MECK

		/sys/bus/platform/devices/GOOG0016:*/MECK

Date:		May 2022

KernelVersion:	5.19

Description:
@@ -113,6 +125,7 @@ Description: 
		present, or if the firmware was unable to read the extended registers, this buffer size can be zero.



What:		/sys/bus/platform/devices/GGL0001:*/VBNV.0

		/sys/bus/platform/devices/GOOG0016:*/VBNV.0

Date:		May 2022

KernelVersion:	5.19

Description:
@@ -122,6 +135,7 @@ Description: 
		clock data).



What:		/sys/bus/platform/devices/GGL0001:*/VBNV.1

		/sys/bus/platform/devices/GOOG0016:*/VBNV.1

Date:		May 2022

KernelVersion:	5.19

Description:
@@ -129,6 +143,7 @@ Description: 
		storage block.



What:		/sys/bus/platform/devices/GGL0001:*/VDAT

		/sys/bus/platform/devices/GOOG0016:*/VDAT

Date:		May 2022

KernelVersion:	5.19

Description:

Documentation/firmware-guide/acpi/chromeos-acpi-device.rst

+2 −3
Original line number Diff line number Diff line
@@ -5,9 +5,8 @@ Chrome OS ACPI Device 
=====================



Hardware functionality specific to Chrome OS is exposed through a Chrome OS ACPI device.

The plug and play ID of a Chrome OS ACPI device is GGL0001. GGL is a valid PNP ID of Google.

PNP ID can be used with the ACPI devices according to the guidelines. The following ACPI

objects are supported:

The plug and play ID of a Chrome OS ACPI device is GGL0001 and the hardware ID is

GOOG0016.  The following ACPI objects are supported:



.. flat-table:: Supported ACPI Objects

   :widths: 1 2

drivers/platform/chrome/chromeos_acpi.c

+1 −1
Original line number Diff line number Diff line
@@ -235,9 +235,9 @@ static int chromeos_acpi_device_probe(struct platform_device *pdev) 
	return 0;

}



/* GGL is valid PNP ID of Google. PNP ID can be used with the ACPI devices. */

static const struct acpi_device_id chromeos_device_ids[] = {

	{ "GGL0001", 0 },

	{ "GOOG0016", 0 },

	{}

};

MODULE_DEVICE_TABLE(acpi, chromeos_device_ids);