kernel/linux.git/drivers/platform/chrome/Kconfig, branch v6.12.80

platform/chrome: cros_kbd_led_backlight: allow binding through MFD

2024-06-14T09:09:40+00:00

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 Acked-by: Tzung-Bi Shih Link: https://lore.kernel.org/r/20240526-cros_ec-kbd-led-framework-v3-3-ee577415a521@weissschuh.net Signed-off-by: Lee Jones

platform/chrome: add HAS_IOPORT dependencies

2024-04-24T08:45:59+00:00

In a future patch HAS_IOPORT=n will disable inb()/outb() and friends at compile time. We thus need to add HAS_IOPORT as dependency for those drivers using them. Co-developed-by: Arnd Bergmann Signed-off-by: Arnd Bergmann Signed-off-by: Niklas Schnelle Link: https://lore.kernel.org/r/20240405134151.5560-2-schnelle@linux.ibm.com Signed-off-by: Tzung-Bi Shih

platform/chrome: kunit: make EC protocol tests independent

2023-10-05T10:11:36+00:00

Remove CONFIG_CROS_KUNIT and common code concept for ChromeOS Kunit but make it bundle to ChromeOS EC protocol tests. Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20231003080515.4011374-1-tzungbi@kernel.org Signed-off-by: Tzung-Bi Shih

platform/chrome: cros_ec_typec: Alter module name with hyphens

2023-01-09T20:32:53+00:00

Change the Type-C module name from cros_ec_typec to cros-ec-typec. This allows us to include more files in the same module (rather than relying on the file name cros_ec_typec to also be the module name). Signed-off-by: Prashant Malani [pmalani: Fixed trivial conflict in Makefile] Reviewed-by: Benson Leung Acked-by: Heikki Krogerus Link: https://lore.kernel.org/r/20221228004648.793339-8-pmalani@chromium.org

platform/chrome: cros_ec_uart: Add transport layer

2022-12-28T03:41:48+00:00

This patch does following: 1. Adds a new cros-ec-uart driver. This driver can send EC requests on UART and process response packets received on UART transport. 2. Once probed, this driver will initialize the serdev device based on the underlying information in the ACPI resource. After serdev device properties are set, this driver will register itself cros-ec. 3. High level driver can use this implementation to talk to ChromeOS Embedded Controller device in case it supports UART as transport. 4. When cros-ec driver initiates a request packet, outgoing message is processed in buffer and sent via serdev. Once bytes are sent, driver enables a wait_queue. 5. Since ChromeOS EC device sends response asynchronously, AP's TTY driver accumulates response bytes and calls the registered callback. TTY driver can send multiple callback for bytes ranging from 1 to MAX bytes supported by EC device. 6. Driver waits for EC_MSG_DEADLINE_MS to collect and process received bytes. It wakes wait_queue if expected bytes are received or else wait_queue timeout. Based on the error condition, driver returns data_len or error to cros_ec. Signed-off-by: Bhanu Prakash Maiya Co-developed-by: Mark Hasemeyer Signed-off-by: Mark Hasemeyer Reviewed-by: Prashant Malani Signed-off-by: Tzung-Bi Shih Link: https://lore.kernel.org/r/20221227123212.v13.1.If7926fcbad397bc6990dd725690229bed403948c@changeid

platform/chrome: add a driver for HPS

2022-10-18T04:53:15+00:00

This patch introduces a driver for the ChromeOS human presence sensor (aka. HPS). The driver supports a sensor connected to the I2C bus and identified as "GOOG0020" in the ACPI tables. When loaded, the driver exports the sensor to userspace through a character device. This device only supports power management, i.e., communication with the sensor must be done through regular I2C transmissions from userspace. Power management is implemented by enabling the respective power GPIO while at least one userspace process holds an open fd on the character device. By default, the device is powered down if there are no active clients. Note that the driver makes no effort to preserve the state of the sensor between power down and power up events. Userspace is responsible for reinitializing any needed state once power has been restored. The device firmware, I2C protocol and other documentation is available at https://chromium.googlesource.com/chromiumos/platform/hps-firmware. Co-developed-by: Sami Kyöstilä Signed-off-by: Sami Kyöstilä Signed-off-by: Dan Callaghan Signed-off-by: Tzung-Bi Shih Link: https://lore.kernel.org/r/20221018040623.2173441-1-dcallagh@chromium.org

platform/chrome: cros_typec_switch: Add switch driver

2022-08-18T22:20:35+00:00

Introduce a driver to configure USB Type-C mode switches and retimers which are controlled by the ChromeOS EC (Embedded Controller). This allows Type-C port drivers, as well as alternate mode drivers to configure their relevant mode switches and retimers according to the Type-C state they want to achieve. ACPI devices with ID GOOG001A will bind to this driver. Currently, we only register a retimer switch with a stub set function. Subsequent patches will implement the host command set functionality, and introduce mode switches. Signed-off-by: Prashant Malani Reviewed-by: Tzung-Bi Shih Link: https://lore.kernel.org/r/20220816214857.2088914-3-pmalani@chromium.org

platform/chrome: merge Kunit utils and test cases

2022-07-21T08:49:28+00:00

Merge CROS_KUNIT and CROS_EC_PROTO_KUNIT_TEST so that when they're built as modules cros_kunit_util doesn't need to export the symbols. Signed-off-by: Tzung-Bi Shih Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20220720044754.4026295-2-tzungbi@kernel.org

platform/chrome: cros_ec_proto: add Kunit tests for cros_ec_query_all()

2022-06-10T02:31:42+00:00

cros_ec_query_all() sends multiple host commands to EC for querying supported protocols and settings. Add required mock for interacting with cros_ec_query_all() and Kunit tests. Reviewed-by: Guenter Roeck Signed-off-by: Tzung-Bi Shih Link: https://lore.kernel.org/r/20220609084957.3684698-3-tzungbi@kernel.org

platform/chrome: cros_kbd_led_backlight: support EC PWM backend

2022-06-10T02:31:42+00:00

EC PWM backend uses EC_CMD_PWM_SET_KEYBOARD_BACKLIGHT and EC_CMD_PWM_GET_KEYBOARD_BACKLIGHT for setting and getting the brightness respectively. Signed-off-by: Tzung-Bi Shih Reviewed-by: Matthias Kaehlcke Tested-by: Matthias Kaehlcke Link: https://lore.kernel.org/r/20220523090822.3035189-6-tzungbi@kernel.org