From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2FFFC2E401; Thu, 11 Sep 2025 13:18:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757596717; cv=none; b=i/DLPofKFrPOF8jFBx5SA2wkz+vB6DRpeAX3LdQrn9bKkL71vblSPkWryeAM4uIuIqEd0LS8Rew/c5l+8KJxWSxiQgrjuX4wN68xKz7SRWY3CXYBSgZamaIg3AGhfbQd14OtImAYwsq4LnjL24DW7o+PlcuP/WSSxax4oaLfDFo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757596717; c=relaxed/simple; bh=YG/vEhqn3/yG3yOUHYvMDp3IurV7m/ZP6vW11i4EWmQ=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=c32EOmPv0S54jcALj+xGGsqb4a+Olu30Z0G9Jaxa/QW350Nz9BvzQU8qwNHwhnysyxuXFIjRnuuv/wnyu68oSulfA5Oo5p1XGyxfEfuydvkTOOKRJtlaBGf3FBx7WKr4UKjM+caw+fT8TcSuShzCrmdJpF3I1Qbws4nkEdiyqRo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Bp1UzKVq; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Bp1UzKVq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 494F0C4CEF0; Thu, 11 Sep 2025 13:18:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1757596716; bh=YG/vEhqn3/yG3yOUHYvMDp3IurV7m/ZP6vW11i4EWmQ=; h=From:To:Cc:Subject:Date:From; b=Bp1UzKVq5D4iH+KtWvf2g/vd6xeHncUEijGskp5faarVNhcJMhziGwlWJcqZOrPpX 1PJDfeY8GinJ0Zwq2IGd7KOm0J06Kg2m3LubADCaGwR/WXf0RM4vZ1bX655tkIEpFE uJWud1krT2mVRp4Qo84O4jy9eGoQPW+1ygN3+OPHL5g3RsOQRyQoCrhYbHnRNRuBOj hHop0rzn5GCbUrwTdivdwCoqpslqB5ioHR+wdeAKpmXgydk7CjydJICsP3orm34X4Z JbGvz63wDVy292KX3Kiio5XX2W26Uwx5/10eQLHS6ZPt7A88cH3QuCQ/8HEHK4pcaE 6CvqNsmoS2tdw== From: Hans de Goede To: Israel Cepeda , Sakari Ailus , Wolfram Sang , Andi Shyti , Greg Kroah-Hartman , Bartosz Golaszewski , Linus Walleij Cc: Hans de Goede , Richard Hughes , linux-i2c@vger.kernel.org, linux-usb@vger.kernel.org, linux-gpio@vger.kernel.org Subject: [PATCH v5 0/3] usb/gpio/i2c: Add Intel USBIO USB IO-expander drivers Date: Thu, 11 Sep 2025 15:18:29 +0200 Message-ID: <20250911131832.59335-1-hansg@kernel.org> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi All, Here is v5 of the patch series to add support for the Intel USBIO USB IO-expander used by the MIPI cameras on various new (Meteor Lake and later) Intel laptops. Changes in v5: - GPIO: Move GPIO_USBIO Kconfig option under 'menu "USB GPIO expanders"' - I2C: Drop some unnecessary dev_dbg() messages - I2C: Add I2C_AQ_NO_ZERO_LEN to the adapter quirks Changes in v4: - GPIO: Drop include , unneeded auxiliary_set_drvdata() Changes in v3: - Drop (offset >= gc->ngpio) check and make usbio_gpio_get_bank_and_pin() return void - Propagate usbio_gpio_set() ret val in usbio_gpio_direction_output() - Use devm_gpiochip_add_data() and drop auxiliary_driver remove() callback Changes in v2: - Split usbio-bridge mutex into ctrl_mutex and bulk_mutex - Drop SPI support since this is not used on devices in the field - Rework disconnect handling to be more robust - Several different revisions need special casing add a quirks mechanism for this - Stop using stdint.h (uintX_t) types - Use __le16, __le32 type + cpu_to_le16() and friends for on wire words - Properly check auxiliary_device_add() return value - Add a mutex to the GPIO driver to protect usbio_gpio_update_config() calls, which read-modify-write banks[x].config, racing with each other - Adjust usbio_gpio_get() to have an int return value and propagate the usbio_control_msg() return value - Various (small) style fixes from Sakari's review of all 3 patches 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. 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 | 10 + drivers/gpio/Kconfig | 11 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-usbio.c | 247 +++++++++++ drivers/i2c/busses/Kconfig | 11 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-usbio.c | 320 ++++++++++++++ drivers/usb/misc/Kconfig | 14 + drivers/usb/misc/Makefile | 1 + drivers/usb/misc/usbio.c | 749 +++++++++++++++++++++++++++++++++ include/linux/usb/usbio.h | 177 ++++++++ 11 files changed, 1542 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 -- 2.51.0