From patchwork Mon Oct 9 06:33:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Wentong" X-Patchwork-Id: 13412958 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 4B2C8E95A8D for ; Mon, 9 Oct 2023 06:33:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230475AbjJIGd4 (ORCPT ); Mon, 9 Oct 2023 02:33:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49642 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229551AbjJIGd4 (ORCPT ); Mon, 9 Oct 2023 02:33:56 -0400 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 265A6B9; Sun, 8 Oct 2023 23:33:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1696833234; x=1728369234; h=from:to:cc:subject:date:message-id; bh=yGGnTiOwfcMWNPVc2G/Q813ixhjZkvPBHMtZp7WfHWA=; b=RhzwvGgW2Tay0i90VybRKZkZns+OkvFNviuWP8QAvEoI2Dm5YADqBnL8 Xzn4lmefIuDYnS11qsVcOtnUIs/FlNvK0FVYdmnsFguae0664Od7KjHK6 KnSpfiTj7BvEQB11ytKycUE6UPGlZy14RNRWo4QoFwAgsJ7e2LGStV3uA usQvzYrJh2mK9SLoCEMu5Ubx+Fgko54HdGoa2V3evU1HsZOcjq5pUV88v wTKKe5FGxnJCEBR9T9Wasbv/1BJb1MKvOzpwwQLA3yWdDkoN0yvOA4fie w6FwIV34g7coFaIl1w2k+naBsB46w8YvjFda+o6ji+1GKDXTKY7I+OJk0 Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10857"; a="448273533" X-IronPort-AV: E=Sophos;i="6.03,209,1694761200"; d="scan'208";a="448273533" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Oct 2023 23:33:51 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10857"; a="896653868" X-IronPort-AV: E=Sophos;i="6.03,209,1694761200"; d="scan'208";a="896653868" Received: from shsensorbuild2.sh.intel.com ([10.239.134.197]) by fmsmga001.fm.intel.com with ESMTP; 08 Oct 2023 23:32:08 -0700 From: Wentong Wu To: gregkh@linuxfoundation.org, oneukum@suse.com, wsa@kernel.org, andi.shyti@linux.intel.com, broonie@kernel.org Cc: bartosz.golaszewski@linaro.org, linus.walleij@linaro.org, hdegoede@redhat.com, linux-usb@vger.kernel.org, linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org, sakari.ailus@linux.intel.com, zhifeng.wang@intel.com, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Wentong Wu Subject: [PATCH v20 0/4] Add Intel LJCA device driver Date: Mon, 9 Oct 2023 14:33:21 +0800 Message-Id: <1696833205-16716-1-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 with host USB interface, such as GPIO, I2C and SPI. This patch set adds four drivers to support this device: a USB device driver, a GPIO chip driver, a I2C controller driver and a SPI controller driver. --- v20: - add __counted_by attributes for all of [] arrays - use proper kernel doc for ljca_adapter structure - re-structure ljca_recv function to make it more clear - remove all of scoped_guard - check return value of usb_autopm_get_interface() - re-structure ljca_enumerate_clients() to handle error correctly - add comment for 'uid = "0";' in ljca_match_device_ids() - change the parameters' type of ljca_send() to u8 v17 - v19: - rebase patch set on top of Linus' master branch (57d88e8a5974644039fbc47806bac7bb12025636) - 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 * v14 - v15: - enhance disconnect() of usb-ljca driver - change memchr to strchr in ljca_match_device_ids() of usb-ljca driver - 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 - avoid err printing because of calling usb_kill_urb when attempts to resubmit the rx urb v10 - v12: - 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 - remove ljca_i2c_format_slave_addr - remove memset before write write w_packet for i2c driver - 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 | 343 ++++++++++++++++ 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 | 902 ++++++++++++++++++++++++++++++++++++++++++ include/linux/usb/ljca.h | 145 +++++++ 12 files changed, 1870 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