acrn-kernel/drivers/extcon
Hans de Goede 21356ac14e extcon: intel-cht-wc: Report RID_A for ACA adapters
Make cht_wc_extcon_get_id() report RID_A for ACA adapters, instead of
reporting ID_FLOAT.

According to the spec. we should read the USB-ID pin ADC value
to determine the resistance of the used pull-down resister and
then return RID_A / RID_B / RID_C based on this. But all "Accessory
Charger Adapter"s (ACAs) which users can actually buy always use
a combination of a charging port with one or more USB-A ports, so
they should always use a resistor indicating RID_A. But the spec
is hard to read / badly-worded so some of them actually indicate
they are a RID_B ACA even though they clearly are a RID_A ACA.

To workaround this simply always return INTEL_USB_RID_A, which
matches all the ACAs which users can actually buy.

Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
2022-02-01 14:55:12 +01:00
..
Kconfig extcon: intel-cht-wc: Support devs with Micro-B / USB-2 only Type-C connectors 2022-02-01 14:55:12 +01:00
Makefile
devres.c
extcon-adc-jack.c
extcon-axp288.c extcon: extcon-axp288: Use P-Unit semaphore lock for register accesses 2021-10-27 14:13:38 +09:00
extcon-fsa9480.c
extcon-gpio.c
extcon-intel-cht-wc.c extcon: intel-cht-wc: Report RID_A for ACA adapters 2022-02-01 14:55:12 +01:00
extcon-intel-int3496.c
extcon-intel-mrfld.c
extcon-intel.h
extcon-max3355.c extcon: max3355: Drop unused include 2021-10-27 14:13:37 +09:00
extcon-max8997.c
extcon-max14577.c
extcon-max77693.c
extcon-max77843.c
extcon-palmas.c
extcon-ptn5150.c
extcon-qcom-spmi-misc.c
extcon-rt8973a.c
extcon-rt8973a.h
extcon-sm5502.c
extcon-sm5502.h
extcon-usb-gpio.c extcon: usb-gpio: fix a non-kernel-doc comment 2021-12-24 15:27:52 +09:00
extcon-usbc-cros-ec.c
extcon-usbc-tusb320.c extcon: usbc-tusb320: Add support for TUSB320L 2021-10-27 14:13:39 +09:00
extcon.c extcon: Deduplicate code in extcon_set_state_sync() 2021-12-24 15:27:52 +09:00
extcon.h