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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: Simon Glass <sjg@chromium.org>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20230731024214.908235-1-tzungbi@kernel.org
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
This commit is contained in:
Tzung-Bi Shih 2023-07-31 10:42:14 +08:00
parent f2d4dced9a
commit 703e77134e
3 changed files with 18 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
Documentation/ABI/testing/sysfs-driver-chromeos-acpi
View File

@ -1,4 +1,5 @@
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:

5
Documentation/firmware-guide/acpi/chromeos-acpi-device.rst
View File

@ -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

2
drivers/platform/chrome/chromeos_acpi.c
View File

@ -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);