[PATCH 0/3] usb/gpio/i2c: Add Intel USBIO USB IO-expander drivers

Hans de Goede
2025-08-09T10:23:36Z

Hi All,

This patch series adds support for the Intel USBIO USB IO-expander used by
the MIPI cameras on various new (Meteor Lake and later) Intel laptops.

The first patch adds an USB bridge driver which registers auxbus children
for the GPIO and I2C functions of the USBIO chip.

The second and third patch add a GPIO resp. an I2C driver for the
auxbus children using the IO functions exported by the USB bridge driver.

The second and third patch depend on the IO functions exported by
the first patch. So to merge this we will need either an immutable tag on
the USB tree, or all 3 patches can be merged through the USB tree with
acks from the GPIO and I2C subsystem maintainers.

Regards,

Hans

Israel Cepeda (3):
usb: misc: Add Intel USBIO bridge driver
gpio: Add Intel USBIO GPIO driver
i2c: Add Intel USBIO I2C driver

MAINTAINERS | 9 +
drivers/gpio/Kconfig | 11 +
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-usbio.c | 258 ++++++++++++
drivers/i2c/busses/Kconfig | 11 +
drivers/i2c/busses/Makefile | 1 +
drivers/i2c/busses/i2c-usbio.c | 344 ++++++++++++++++
drivers/usb/misc/Kconfig | 14 +
drivers/usb/misc/Makefile | 1 +
drivers/usb/misc/usbio.c | 693 +++++++++++++++++++++++++++++++++
include/linux/usb/usbio.h | 168 ++++++++
11 files changed, 1511 insertions(+)
create mode 100644 drivers/gpio/gpio-usbio.c
create mode 100644 drivers/i2c/busses/i2c-usbio.c
create mode 100644 drivers/usb/misc/usbio.c
create mode 100644 include/linux/usb/usbio.h

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2.49.0