mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-01-09 06:43:09 +00:00
baa19b6507
The ChromeOS EC used in Framework laptops supports the standard CrOS EC keyboard backlight protocol. However the firmware on these laptops doesn't implement the ACPI ID GOOG0002 that is recognized by cros_kbd_led_backlight and they also don't use device tree. Prepare the existing cros_kbd_led_backlight driver to be probed through the CrOS EC MFD device which works without ACPI or OF support. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Tzung-Bi Shih <tzungbi@kernel.org> Link: https://lore.kernel.org/r/20240526-cros_ec-kbd-led-framework-v3-3-ee577415a521@weissschuh.net Signed-off-by: Lee Jones <lee@kernel.org>
312 lines
9.9 KiB
Plaintext
312 lines
9.9 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
|
|
#
|
|
# Platform support for Chrome OS hardware (Chromebooks and Chromeboxes)
|
|
#
|
|
|
|
menuconfig CHROME_PLATFORMS
|
|
bool "Platform support for Chrome hardware"
|
|
depends on X86 || ARM || ARM64 || COMPILE_TEST
|
|
help
|
|
Say Y here to get to see options for platform support for
|
|
various Chromebooks and Chromeboxes. This option alone does
|
|
not add any kernel code.
|
|
|
|
If you say N, all options in this submenu will be skipped and disabled.
|
|
|
|
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
|
|
help
|
|
This driver instantiates i2c and smbus devices such as
|
|
light sensors and touchpads.
|
|
|
|
If you have a supported Chromebook, choose Y or M here.
|
|
The module will be called chromeos_laptop.
|
|
|
|
config CHROMEOS_PSTORE
|
|
tristate "Chrome OS pstore support"
|
|
depends on X86
|
|
help
|
|
This module instantiates the persistent storage on x86 ChromeOS
|
|
devices. It can be used to store away console logs and crash
|
|
information across reboots.
|
|
|
|
The range of memory used is 0xf00000-0x1000000, traditionally
|
|
the memory used to back VGA controller memory.
|
|
|
|
If you have a supported Chromebook, choose Y or M here.
|
|
The module will be called chromeos_pstore.
|
|
|
|
config CHROMEOS_TBMC
|
|
tristate "ChromeOS Tablet Switch Controller"
|
|
depends on ACPI
|
|
depends on INPUT
|
|
help
|
|
This option adds a driver for the tablet switch on
|
|
select Chrome OS systems.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called chromeos_tbmc.
|
|
|
|
config CROS_EC
|
|
tristate "ChromeOS Embedded Controller"
|
|
select CROS_EC_PROTO
|
|
depends on X86 || ARM || ARM64 || COMPILE_TEST
|
|
help
|
|
If you say Y here you get support for the ChromeOS Embedded
|
|
Controller (EC) providing keyboard, battery and power services.
|
|
You also need to enable the driver for the bus you are using. The
|
|
protocol for talking to the EC is defined by the bus driver.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called cros_ec.
|
|
|
|
config CROS_EC_I2C
|
|
tristate "ChromeOS Embedded Controller (I2C)"
|
|
depends on CROS_EC && I2C
|
|
|
|
help
|
|
If you say Y here, you get support for talking to the ChromeOS
|
|
EC through an I2C bus. This uses a simple byte-level protocol with
|
|
a checksum. Failing accesses will be retried three times to
|
|
improve reliability.
|
|
|
|
config CROS_EC_RPMSG
|
|
tristate "ChromeOS Embedded Controller (rpmsg)"
|
|
depends on CROS_EC && RPMSG && OF
|
|
help
|
|
If you say Y here, you get support for talking to the ChromeOS EC
|
|
through rpmsg. This uses a simple byte-level protocol with a
|
|
checksum. Also since there's no addition EC-to-host interrupt, this
|
|
use a byte in message to distinguish host event from host command.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called cros_ec_rpmsg.
|
|
|
|
config CROS_EC_ISHTP
|
|
tristate "ChromeOS Embedded Controller (ISHTP)"
|
|
depends on CROS_EC
|
|
depends on INTEL_ISH_HID
|
|
help
|
|
If you say Y here, you get support for talking to the ChromeOS EC
|
|
firmware running on Intel Integrated Sensor Hub (ISH), using the
|
|
ISH Transport protocol (ISH-TP). This uses a simple byte-level
|
|
protocol with a checksum.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called cros_ec_ishtp.
|
|
|
|
config CROS_EC_SPI
|
|
tristate "ChromeOS Embedded Controller (SPI)"
|
|
depends on CROS_EC && SPI
|
|
|
|
help
|
|
If you say Y here, you get support for talking to the ChromeOS EC
|
|
through a SPI bus, using a byte-level protocol. Since the EC's
|
|
response time cannot be guaranteed, we support ignoring
|
|
'pre-amble' bytes before the response actually starts.
|
|
|
|
config CROS_EC_UART
|
|
tristate "ChromeOS Embedded Controller (UART)"
|
|
depends on CROS_EC && ACPI && SERIAL_DEV_BUS
|
|
help
|
|
If you say Y here, you get support for talking to the ChromeOS EC
|
|
through a UART, using a byte-level protocol.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called cros_ec_uart.
|
|
|
|
config CROS_EC_LPC
|
|
tristate "ChromeOS Embedded Controller (LPC)"
|
|
depends on CROS_EC && ACPI && (X86 || COMPILE_TEST)
|
|
depends on HAS_IOPORT
|
|
help
|
|
If you say Y here, you get support for talking to the ChromeOS EC
|
|
over an LPC bus, including the LPC Microchip EC (MEC) variant.
|
|
This uses a simple byte-level protocol with a checksum. This is
|
|
used for userspace access only. The kernel typically has its own
|
|
communication methods.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called cros_ec_lpcs.
|
|
|
|
config CROS_EC_PROTO
|
|
bool
|
|
help
|
|
ChromeOS EC communication protocol helpers.
|
|
|
|
config CROS_KBD_LED_BACKLIGHT
|
|
tristate "Backlight LED support for Chrome OS keyboards"
|
|
depends on LEDS_CLASS && (ACPI || CROS_EC || MFD_CROS_EC_DEV)
|
|
help
|
|
This option enables support for the keyboard backlight LEDs on
|
|
select Chrome OS systems.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called cros_kbd_led_backlight.
|
|
|
|
config CROS_EC_CHARDEV
|
|
tristate "ChromeOS EC miscdevice"
|
|
depends on MFD_CROS_EC_DEV
|
|
default MFD_CROS_EC_DEV
|
|
help
|
|
This driver adds file operations support to talk with the
|
|
ChromeOS EC from userspace via a character device.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called cros_ec_chardev.
|
|
|
|
config CROS_EC_LIGHTBAR
|
|
tristate "Chromebook Pixel's lightbar support"
|
|
depends on MFD_CROS_EC_DEV
|
|
default MFD_CROS_EC_DEV
|
|
help
|
|
This option exposes the Chromebook Pixel's lightbar to
|
|
userspace.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called cros_ec_lightbar.
|
|
|
|
config CROS_EC_VBC
|
|
tristate "ChromeOS EC vboot context support"
|
|
depends on MFD_CROS_EC_DEV && OF
|
|
default MFD_CROS_EC_DEV
|
|
help
|
|
This option exposes the ChromeOS EC vboot context nvram to
|
|
userspace.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called cros_ec_vbc.
|
|
|
|
config CROS_EC_DEBUGFS
|
|
tristate "Export ChromeOS EC internals in DebugFS"
|
|
depends on MFD_CROS_EC_DEV && DEBUG_FS
|
|
default MFD_CROS_EC_DEV
|
|
help
|
|
This option exposes the ChromeOS EC device internals to
|
|
userspace.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called cros_ec_debugfs.
|
|
|
|
config CROS_EC_SENSORHUB
|
|
tristate "ChromeOS EC MEMS Sensor Hub"
|
|
depends on MFD_CROS_EC_DEV
|
|
default MFD_CROS_EC_DEV
|
|
help
|
|
Allow loading IIO sensors. This driver is loaded by MFD and will in
|
|
turn query the EC and register the sensors.
|
|
It also spreads the sensor data coming from the EC to the IIO sensor
|
|
object.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called cros_ec_sensorhub.
|
|
|
|
config CROS_EC_SYSFS
|
|
tristate "ChromeOS EC control and information through sysfs"
|
|
depends on MFD_CROS_EC_DEV && SYSFS
|
|
default MFD_CROS_EC_DEV
|
|
help
|
|
This option exposes some sysfs attributes to control and get
|
|
information from ChromeOS EC.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called cros_ec_sysfs.
|
|
|
|
config CROS_EC_TYPEC
|
|
tristate "ChromeOS EC Type-C Connector Control"
|
|
depends on MFD_CROS_EC_DEV && TYPEC
|
|
depends on CROS_USBPD_NOTIFY
|
|
depends on USB_ROLE_SWITCH
|
|
default MFD_CROS_EC_DEV
|
|
help
|
|
If you say Y here, you get support for accessing Type C connector
|
|
information from the Chrome OS EC.
|
|
|
|
To compile this driver as a module, choose M here: the module will be
|
|
called cros-ec-typec.
|
|
|
|
config CROS_HPS_I2C
|
|
tristate "ChromeOS HPS device"
|
|
depends on HID && I2C && PM
|
|
help
|
|
Say Y here if you want to enable support for the ChromeOS
|
|
human presence sensor (HPS), attached via I2C. The driver supports a
|
|
sensor connected to the I2C bus and exposes it as a character device.
|
|
To save power, the sensor is automatically powered down when no
|
|
clients are accessing it.
|
|
|
|
config CROS_USBPD_LOGGER
|
|
tristate "Logging driver for USB PD charger"
|
|
depends on CHARGER_CROS_USBPD
|
|
default y
|
|
select RTC_LIB
|
|
help
|
|
This option enables support for logging event data for the USB PD charger
|
|
available in the Embedded Controller on ChromeOS systems.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called cros_usbpd_logger.
|
|
|
|
config CROS_USBPD_NOTIFY
|
|
tristate "ChromeOS Type-C power delivery event notifier"
|
|
depends on MFD_CROS_EC_DEV
|
|
default MFD_CROS_EC_DEV
|
|
help
|
|
If you say Y here, you get support for Type-C PD event notifications
|
|
from the ChromeOS EC. On ACPI platorms this driver will bind to the
|
|
GOOG0003 ACPI device, and on platforms which don't have this device it
|
|
will get initialized on ECs which support the feature
|
|
EC_FEATURE_USB_PD.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called cros_usbpd_notify.
|
|
|
|
config CHROMEOS_PRIVACY_SCREEN
|
|
tristate "ChromeOS Privacy Screen support"
|
|
depends on ACPI
|
|
depends on DRM
|
|
select DRM_PRIVACY_SCREEN
|
|
help
|
|
This driver provides the support needed for the in-built electronic
|
|
privacy screen that is present on some ChromeOS devices. When enabled,
|
|
this should probably always be built into the kernel to avoid or
|
|
minimize drm probe deferral.
|
|
|
|
config CROS_TYPEC_SWITCH
|
|
tristate "ChromeOS EC Type-C Switch Control"
|
|
depends on MFD_CROS_EC_DEV && TYPEC && ACPI
|
|
default MFD_CROS_EC_DEV
|
|
help
|
|
If you say Y here, you get support for configuring the ChromeOS EC Type-C
|
|
muxes and retimers.
|
|
|
|
To compile this driver as a module, choose M here: the module will be
|
|
called cros_typec_switch.
|
|
|
|
source "drivers/platform/chrome/wilco_ec/Kconfig"
|
|
|
|
# Kunit test cases
|
|
config CROS_KUNIT_EC_PROTO_TEST
|
|
tristate "Kunit tests for ChromeOS EC protocol" if !KUNIT_ALL_TESTS
|
|
depends on KUNIT && CROS_EC
|
|
default KUNIT_ALL_TESTS
|
|
select CROS_EC_PROTO
|
|
help
|
|
Kunit tests for ChromeOS EC protocol.
|
|
|
|
endif # CHROMEOS_PLATFORMS
|