6.15-stable review patch. If anyone has any objections, please let me know.
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From: Thomas Weißschuh linux@weissschuh.net
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/1d7bcf1d50137... Fixes: 555b5fcdb844 ("mfd: cros_ec: Register charge control subdevice") Signed-off-by: Thomas Weißschuh linux@weissschuh.net Reviewed-by: Tzung-Bi Shih tzungbi@kernel.org Tested-by: Tom Vincent linux@tlvince.com Link: https://lore.kernel.org/r/20250521-cros-ec-mfd-chctl-probe-v1-1-6ebfe3a6efa7... Signed-off-by: Lee Jones lee@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/mfd/cros_ec_dev.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
--- a/drivers/mfd/cros_ec_dev.c +++ b/drivers/mfd/cros_ec_dev.c @@ -87,7 +87,6 @@ static const struct mfd_cell cros_ec_sen };
static const struct mfd_cell cros_usbpd_charger_cells[] = { - { .name = "cros-charge-control", }, { .name = "cros-usbpd-charger", }, { .name = "cros-usbpd-logger", }, }; @@ -112,6 +111,10 @@ static const struct mfd_cell cros_ec_ucs { .name = "cros_ec_ucsi", }, };
+static const struct mfd_cell cros_ec_charge_control_cells[] = { + { .name = "cros-charge-control", }, +}; + static const struct cros_feature_to_cells cros_subdevices[] = { { .id = EC_FEATURE_CEC, @@ -148,6 +151,11 @@ static const struct cros_feature_to_cell .mfd_cells = cros_ec_keyboard_leds_cells, .num_cells = ARRAY_SIZE(cros_ec_keyboard_leds_cells), }, + { + .id = EC_FEATURE_CHARGER, + .mfd_cells = cros_ec_charge_control_cells, + .num_cells = ARRAY_SIZE(cros_ec_charge_control_cells), + }, };
static const struct mfd_cell cros_ec_platform_cells[] = {