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| -rw-r--r-- | drivers/platform/chrome/Kconfig | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/drivers/platform/chrome/Kconfig b/drivers/platform/chrome/Kconfig new file mode 100644 index 000000000..6b954c5ac --- /dev/null +++ b/drivers/platform/chrome/Kconfig @@ -0,0 +1,290 @@ +# 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_LPC + tristate "ChromeOS Embedded Controller (LPC)" + depends on CROS_EC && ACPI && (X86 || COMPILE_TEST) + 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) + 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_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 + tristate "Kunit tests for ChromeOS" if !KUNIT_ALL_TESTS + depends on KUNIT && CROS_EC + default KUNIT_ALL_TESTS + select CROS_EC_PROTO + help + ChromeOS Kunit tests. + +endif # CHROMEOS_PLATFORMS |