From patchwork Sat Sep 16 18:37:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Wentong" X-Patchwork-Id: 723878 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 DADFAC2BA2B for ; Sat, 16 Sep 2023 18:38:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236526AbjIPSiY (ORCPT ); Sat, 16 Sep 2023 14:38:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38118 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229732AbjIPSht (ORCPT ); Sat, 16 Sep 2023 14:37:49 -0400 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D11CFCE3; Sat, 16 Sep 2023 11:37:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694889464; x=1726425464; h=from:to:cc:subject:date:message-id; bh=AT5WWxI9hLwFEV51mkyCPpGP+L0vQQIaLfZ7jwJnb8A=; b=GRwFCWWrCzo3yeKDlyp7IfnTf5oSxlhd3VuPUOjCgjQaDipnGCUhwp9T UST0bRL3QGGZyeicmpYDSHqG31C33DuGxX29okOtpmgTK+maswRhqAwH8 OQrd0xNaQr9s5M+sujEs52FQ4eZ/Uo0Ng7BW8GRFFDJg636S4HM/jQByC PW4w2jUOHrnBrbYqd4h9PUz2JItjZY3E3gzB6V6yVPxqwHpuePdjf/MLc ts5LcEfUW16Nl2KNdgr3LFC1hXJfSeBa8+3a1aO6E9Llrm2lSSH2JMYsL nYrf/MjO29jyAadJcnTjH6Dk2XrkHQ7tdN88ue7KT1iSytE+kqFtKPlAX A==; X-IronPort-AV: E=McAfee;i="6600,9927,10835"; a="383273388" X-IronPort-AV: E=Sophos;i="6.02,152,1688454000"; d="scan'208";a="383273388" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Sep 2023 11:37:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10835"; a="745372022" X-IronPort-AV: E=Sophos;i="6.02,152,1688454000"; d="scan'208";a="745372022" Received: from shsensorbuild2.sh.intel.com ([10.239.134.197]) by orsmga002.jf.intel.com with ESMTP; 16 Sep 2023 11:37:27 -0700 From: Wentong Wu To: gregkh@linuxfoundation.org, arnd@arndb.de, mka@chromium.org, oneukum@suse.com, lee@kernel.org, wsa@kernel.org, kfting@nuvoton.com, broonie@kernel.org, linus.walleij@linaro.org, hdegoede@redhat.com, maz@kernel.org, brgl@bgdev.pl, linux-usb@vger.kernel.org, linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org, linux-gpio@vger.kernel.org, andriy.shevchenko@linux.intel.com, heikki.krogerus@linux.intel.com, andi.shyti@linux.intel.com, sakari.ailus@linux.intel.com, bartosz.golaszewski@linaro.org, srinivas.pandruvada@intel.com Cc: zhifeng.wang@intel.com, Wentong Wu Subject: [PATCH v18 0/4] Add Intel LJCA device driver Date: Sun, 17 Sep 2023 02:37:17 +0800 Message-Id: <1694889441-7024-1-git-send-email-wentong.wu@intel.com> X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Add driver for Intel La Jolla Cove Adapter (LJCA) device. This IO-expander adds additional functions to the host system such as GPIO, I2C and SPI with USB host interface. We add 4 drivers to support this device: a USB driver, a GPIO chip driver, a I2C controller driver and a SPI controller driver. --- v18: - rebase patch set on top of Linus' master branch (57d88e8a5974644039fbc47806bac7bb12025636) v17: - change valid_pins type to __le32 and access valid_pins with get_unaligned_le32 - remove COMPILE_TEST for USB_LJCA Kconfig v16: - drop all void * and use real types in the exported apis and internal ljca_send() - remove #ifdef in usb-ljca.c file - add documentation in ljca.h for the public structures - add error message in ljca_handle_cmd_ack() if error happens and remove blank line - use the functionality in cleanup.h for spinlock to make function much simpler - change the type of ex_buf in struct ljca_adapter to u8 * v15: - enhance disconnect() of usb-ljca driver - change memchr to strchr in ljca_match_device_ids() of usb-ljca driver v14: - fix build error: implicit declaration of function 'acpi_dev_clear_dependencies' v13: - make ljca-usb more robust with the help of Hans de Goede - call acpi_dev_clear_dependencies() to mark _DEP ACPI dependencies on the I2C controller as satisfied, and patch is from Hans de Goede v12: - switch dev_err to dev_dbg for i2c-ljca driver - avoid err printing because of calling usb_kill_urb when attempts to resubmit the rx urb v11: - switch dev_err to dev_dbg for i2c-ljca driver - remove message length check because of defined quirk structure - remove I2C_FUNC_SMBUS_EMUL support v10: - remove ljca_i2c_format_slave_addr - remove memset before write write w_packet - make ljca_i2c_stop void and print err message in case failure - use dev_err_probe in ljca_i2c_probe function v9: - overhaul usb-ljca driver to make it more structured and easy understand - fix memory leak issue for usb-ljca driver - add spinlock to protect tx_buf and ex_buf - change exported APIs for usb-ljca driver - unify prefix for structures and functions for i2c-ljca driver - unify prefix for structures and functions for spi-ljca driver - unify prefix for structures and functions for gpio-ljca driver - update gpio-ljca, i2c-ljca and spi-ljca drivers according to usb-ljca's changes Wentong Wu (4): usb: Add support for Intel LJCA device i2c: Add support for Intel LJCA USB I2C driver spi: Add support for Intel LJCA USB SPI driver gpio: update Intel LJCA USB GPIO driver drivers/gpio/Kconfig | 4 +- drivers/gpio/gpio-ljca.c | 246 +++++++------ drivers/i2c/busses/Kconfig | 11 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-ljca.c | 342 +++++++++++++++++ drivers/spi/Kconfig | 11 + drivers/spi/Makefile | 1 + drivers/spi/spi-ljca.c | 297 +++++++++++++++ drivers/usb/misc/Kconfig | 14 + drivers/usb/misc/Makefile | 1 + drivers/usb/misc/usb-ljca.c | 835 ++++++++++++++++++++++++++++++++++++++++++ include/linux/usb/ljca.h | 145 ++++++++ 12 files changed, 1803 insertions(+), 105 deletions(-) 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