kernel/linux.git/drivers/mfd/cros_ec_dev.c, branch v6.12.80

mfd: cros_ec: Separate charge-control probing from USB-PD

2025-08-20T16:30:56+00:00

commit e40fc1160d491c3bcaf8e940ae0dde0a7c5e8e14 upstream. The charge-control subsystem in the ChromeOS EC is not strictly tied to its USB-PD subsystem. Since commit 7613bc0d116a ("mfd: cros_ec: Don't load charger with UCSI") the presence of EC_FEATURE_UCSI_PPM would inhibit the probing of the charge-control driver. Furthermore recent versions of the EC firmware in Framework laptops hard-disable EC_FEATURE_USB_PD to avoid probing cros-usbpd-charger, which then also breaks cros-charge-control. Instead use the dedicated EC_FEATURE_CHARGER. Cc: stable@vger.kernel.org Link: https://github.com/FrameworkComputer/EmbeddedController/commit/1d7bcf1d50137c8c01969eb65880bc83e424597e Fixes: 555b5fcdb844 ("mfd: cros_ec: Register charge control subdevice") Signed-off-by: Thomas Weißschuh Reviewed-by: Tzung-Bi Shih Tested-by: Tom Vincent Link: https://lore.kernel.org/r/20250521-cros-ec-mfd-chctl-probe-v1-1-6ebfe3a6efa7@weissschuh.net Signed-off-by: Lee Jones Signed-off-by: Greg Kroah-Hartman

mfd: cros_ec: Update module description

2024-09-23T15:20:53+00:00

The module description can be backtracked to commit e7c256fbfb15 ("platform/chrome: Add Chrome OS EC userspace device interface"). The description became out-of-date after a bunch of changes e.g: - commit 5668bfdd90cd ("platform/chrome: cros_ec_dev - Register cros-ec sensors"). - commit ea01a31b9058 ("cros_ec: Split cros_ec_devs module"). - commit 5e0115581bbc ("cros_ec: Move cros_ec_dev module to drivers/mfd"). Update the description. Signed-off-by: Tzung-Bi Shih Link: https://lore.kernel.org/r/20240822121539.4265-1-tzungbi@kernel.org Signed-off-by: Lee Jones

mfd: cros_ec: Simplify and clean-up cros_ec_dev_init()

2024-09-23T15:20:53+00:00

Simplify cros_ec_dev_init() by the following changes: - Get rid of label `failed_devreg`. - Remove a redundant space and comment. - Use `if (ret)` instead of `if (ret < 0)`. Signed-off-by: Tzung-Bi Shih Link: https://lore.kernel.org/r/20240819102326.5235-1-tzungbi@kernel.org Signed-off-by: Lee Jones

mfd: cros_ec: Register hardware monitoring subdevice

2024-07-04T16:08:02+00:00

Add ChromeOS EC-based hardware monitoring as EC subdevice. Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/r/20240529-cros_ec-hwmon-v4-3-5cdf0c5db50a@weissschuh.net Signed-off-by: Lee Jones

mfd: cros_ec: Register charge control subdevice

2024-07-04T16:08:02+00:00

Add ChromeOS EC-based charge control as EC subdevice. Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/r/20240528-cros_ec-charge-control-v2-3-81fb27e1cff4@weissschuh.net Signed-off-by: Lee Jones

Merge branch 'ib-mfd-leds-platform-6.11' into ibs-for-mfd-merged

2024-07-04T16:07:01+00:00

mfd: cros_ec: Register LED subdevice

2024-06-21T10:41:51+00:00

Add ChromeOS EC-based LED control as EC subdevice. Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/r/20240613-cros_ec-led-v3-5-500b50f41e0f@weissschuh.net Signed-off-by: Lee Jones

mfd: cros_ec: Register keyboard backlight subdevice

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

Load cros_kbd_led_backlight when the EC reports EC_FEATURE_PWM_KEYB. This makes cros_kbd_led_backlight work on machines without specific ACPI or OF support for the keyboard backlight. Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/r/20240526-cros_ec-kbd-led-framework-v3-4-ee577415a521@weissschuh.net Signed-off-by: Lee Jones

mfd: cros_ec_dev: Add GPIO device if feature present on EC

2024-02-23T17:14:13+00:00

The ChromeOS embedded controller (EC) supports setting the state of GPIOs when the system is unlocked, and getting the state of GPIOs in all cases. Check for the feature support by checking for the GPIO feature and then populate a sub-device for the gpio hardware on the EC. Signed-off-by: Stephen Boyd Link: https://lore.kernel.org/r/20240219202325.4095816-3-swboyd@chromium.org Signed-off-by: Lee Jones

mfd: cros_ec: Register EC-based watchdog subdevice

2024-02-23T14:58:01+00:00

Add ChromeOS EC-based watchdog as EC subdevice. Signed-off-by: Lukasz Majczak Link: https://lore.kernel.org/r/20240119084328.3135503-4-lma@chromium.org Signed-off-by: Lee Jones