From patchwork Thu Sep 14 12:45:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Wentong" X-Patchwork-Id: 723043 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 26F26CA0EF6 for ; Thu, 14 Sep 2023 12:50:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238478AbjINMuj (ORCPT ); Thu, 14 Sep 2023 08:50:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44828 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237683AbjINMuj (ORCPT ); Thu, 14 Sep 2023 08:50:39 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.120]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1EEEA9B; Thu, 14 Sep 2023 05:50:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694695835; x=1726231835; h=from:to:cc:subject:date:message-id; bh=ltc7zMqv/QU8PZJuqZg9TNqNO0HQO7E7axD/p1AKl3o=; b=ho3zdog1nQz4fBw7QRhHRcO8K86qBXPlBjy2uylrfJadw9cx9zCeB4B8 j44AnX39qQXcBFsfTmiXFWBprVue9Yjy/oa6TB2KbVNSwGLOtFDkK8Om6 97uhA9VI9U8zuRiwSqbzPN74U6DIK7VcSZyD0e0PzDNsm/0q9/SObGTvs fkOEcz+4IZGk6c8O+DA7YimjVcrsj5OYUxWEfJiC5czRcLe4Vowj3qNhm HaMt5uTUDdzg15LkQpX12k102pC578+L7ieLhmZtlasP1o6SQZ1DcTO2T OuZNSclHDcb3x5RtsgpHQDagavozdUpSudBx6rsDItBPIReIqX5xTVz53 Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10833"; a="377846840" X-IronPort-AV: E=Sophos;i="6.02,146,1688454000"; d="scan'208";a="377846840" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Sep 2023 05:50:34 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10833"; a="814656859" X-IronPort-AV: E=Sophos;i="6.02,146,1688454000"; d="scan'208";a="814656859" Received: from shsensorbuild2.sh.intel.com ([10.239.134.197]) by fmsmga004.fm.intel.com with ESMTP; 14 Sep 2023 05:50:29 -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 v17 0/4] Add Intel LJCA device driver Date: Thu, 14 Sep 2023 20:45:26 +0800 Message-Id: <1694695530-31645-1-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. --- 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 | 13 + drivers/usb/misc/Makefile | 1 + drivers/usb/misc/usb-ljca.c | 837 ++++++++++++++++++++++++++++++++++++++++++ include/linux/usb/ljca.h | 145 ++++++++ 12 files changed, 1804 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