diff options
| author | Enric Balletbo i Serra <enric.balletbo@collabora.com> | 2022-05-13 12:52:09 +0500 |
|---|---|---|
| committer | Tzung-Bi Shih <tzungbi@kernel.org> | 2022-05-13 19:42:30 +0800 |
| commit | 0a4cad9c11ad46662ede48d94f08ecb7cd9f6916 (patch) | |
| tree | 796768b32b17c55788f7f5c920ed2c4bc8427c0d /drivers/platform/chrome/Kconfig | |
| parent | 7464ff8bf2d762251b9537863db0e1caf9b0e402 (diff) | |
| download | linux-0a4cad9c11ad46662ede48d94f08ecb7cd9f6916.tar.bz2 | |
platform/chrome: Add ChromeOS ACPI device driver
The x86 Chromebooks have the ChromeOS ACPI device. This driver attaches
to the ChromeOS ACPI device and exports the values reported by ACPI in a
sysfs directory. This data isn't present in ACPI tables when read
through ACPI tools, hence a driver is needed to do it. The driver gets
data from firmware using the ACPI component of the kernel. The ACPI values
are presented in string form (numbers as decimal values) or binary
blobs, and can be accessed as the contents of the appropriate read only
files in the standard ACPI device's sysfs directory tree. This data is
consumed by the ChromeOS user space.
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Co-developed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/Yn4OKYrtV35Dv+nd@debian-BULLSEYE-live-builder-AMD64
Diffstat (limited to 'drivers/platform/chrome/Kconfig')
| -rw-r--r-- | drivers/platform/chrome/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/platform/chrome/Kconfig b/drivers/platform/chrome/Kconfig index 75e93efd669f..717299cbccac 100644 --- a/drivers/platform/chrome/Kconfig +++ b/drivers/platform/chrome/Kconfig @@ -15,6 +15,17 @@ menuconfig CHROME_PLATFORMS if CHROME_PLATFORMS +config CHROMEOS_ACPI + tristate "ChromeOS specific ACPI extensions" + depends on ACPI + help + This driver provides the firmware interface for the services + exported through the ChromeOS interfaces when using ChromeOS + ACPI firmware. + + If you have an ACPI-compatible Chromebook, say Y or M here. + The module will be called chromeos_acpi. + config CHROMEOS_LAPTOP tristate "Chrome OS Laptop" depends on I2C && DMI && X86 |