From patchwork Thu May 11 17:58:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ye Xiang X-Patchwork-Id: 13238317 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 84B87C77B7C for ; Thu, 11 May 2023 18:01:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238673AbjEKSBz (ORCPT ); Thu, 11 May 2023 14:01:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56142 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238952AbjEKSBv (ORCPT ); Thu, 11 May 2023 14:01:51 -0400 Received: from mga06.intel.com (mga06b.intel.com [134.134.136.31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DB18D10C; Thu, 11 May 2023 11:01:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1683828104; x=1715364104; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=YmntpvtFHJS3jrZkGSqUkMwqsVJxjst16k/I4ZCZIMs=; b=FBgw+ylDzA60Cxe55E0rk9FBimMH47VzG+JapG3+i6WN4AqPV58MmAlI 38UCTx8MWenT9MWYNjVRXiQF1H7Gm8BKkTNBbTE4iPFDd6Jl+6jnbApu8 EjAEQmDnDb4cR7s6m0YmXMY7glG8QLSaZtCtHIpux49EhswV09sqGk1kF ycs9qcBrIfO8EoJ0b0ElbxZqdMzhBsrjT5AQ+8Ke7AxO9uqRQFYKCp+ir gkLIqw6B4R7wJUkBwHK45Ayo5sJMj8pTS2LWV6lAA4biZN9i7cK3Cy30i Rb+YigcgT4pGcbgpV+yZBgEgc3V75TwoUIQqrXHSZ4MppCAA7RdYlREQl A==; X-IronPort-AV: E=McAfee;i="6600,9927,10707"; a="413942558" X-IronPort-AV: E=Sophos;i="5.99,268,1677571200"; d="scan'208";a="413942558" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 May 2023 11:00:46 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10707"; a="874061365" X-IronPort-AV: E=Sophos;i="5.99,268,1677571200"; d="scan'208";a="874061365" Received: from ye-nuc7i7dnhe.sh.intel.com ([10.239.153.70]) by orsmga005.jf.intel.com with ESMTP; 11 May 2023 11:00:39 -0700 From: Ye Xiang To: Greg Kroah-Hartman , Arnd Bergmann , Matthias Kaehlcke , Lee Jones , Wolfram Sang , Tyrone Ting , Mark Brown , Linus Walleij , Marc Zyngier , Bartosz Golaszewski , linux-usb@vger.kernel.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, linux-gpio@vger.kernel.org Cc: srinivas.pandruvada@intel.com, heikki.krogerus@linux.intel.com, andriy.shevchenko@linux.intel.com, sakari.ailus@linux.intel.com, zhifeng.wang@intel.com, wentong.wu@intel.com, lixu.zhang@intel.com, Ye Xiang Subject: [PATCH v8 0/6] Add Intel LJCA device driver Date: Fri, 12 May 2023 01:58:38 +0800 Message-Id: <20230511175844.185070-1-xiang.ye@intel.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Add driver for Intel La Jolla Cove Adapter (LJCA) device. This is a USB-GPIO, USB-I2C and USB-SPI device. We add 4 drivers to support this device: a USB driver, a GPIO chip driver, a I2C controller driver and a SPI controller driver. --- v8: - ljca: use READ_ONCE to make the value of ibuf consistent. - gpio: inplement get_direction callback. - gpio: move kconfig item into `USB GPIO expanders` menu. v7: - ljca: remove unused field `udev` in struct ljca_dev. - ljca: rename ljca module name to usb-ljca. - ljca: use CONFIG_ACPI to enclose acpi related code. - ljca/gpio/i2c/spi: align MACRO defination. v6: - ljca: split LJCA USB driver into two commits: USB part and API part. - gpio/i2c/spi: use auxiliary bus for sub-module device enumeration instead of MFD. - move document patch for LJCA sysfs entry to the 3th patch of this patch series. - ljca: fix potential race condition when wait response timeout. - ljca: use devm_kzalloc to malloc ljca device struct. v5: - move ljca.h from drivers/include/mfd to drivers/include/usb. - ljca: fix a potential memory leak issue. - add a blank line before return to adust to kernel code style. - ljca: sysfs: split "cmd" to "ljca_dfu" and "ljca_trace_level". v4: - move ljca.c from drivers/mfd to drivers/usb/misc folder. - fix index warning in sysfs-bus-devices-ljca. v3: - spi: make ljca_spi_transfer inline and fix an endian issue. v2: - ljca: remove reset command. - gpio/spi/i2c: add `default MFD_LJCA` in Kconfig. - gpio: add "select GPIOLIB_IRQCHIP" in Kconfig. Ye Xiang (6): usb: Add support for Intel LJCA device usb: ljca: Add transport interfaces for sub-module drivers Documentation: Add ABI doc for attributes of LJCA device gpio: Add support for Intel LJCA USB GPIO driver i2c: Add support for Intel LJCA USB I2C driver spi: Add support for Intel LJCA USB SPI driver .../ABI/testing/sysfs-bus-usb-devices-ljca | 36 + drivers/gpio/Kconfig | 12 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-ljca.c | 479 ++++++++ drivers/i2c/busses/Kconfig | 11 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-ljca.c | 350 ++++++ drivers/spi/Kconfig | 11 + drivers/spi/Makefile | 1 + drivers/spi/spi-ljca.c | 290 +++++ drivers/usb/misc/Kconfig | 14 + drivers/usb/misc/Makefile | 1 + drivers/usb/misc/usb-ljca.c | 1068 +++++++++++++++++ include/linux/usb/ljca.h | 102 ++ 14 files changed, 2377 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-usb-devices-ljca create mode 100644 drivers/gpio/gpio-ljca.c create mode 100644 drivers/i2c/busses/i2c-ljca.c create mode 100644 drivers/spi/spi-ljca.c create mode 100644 drivers/usb/misc/usb-ljca.c create mode 100644 include/linux/usb/ljca.h