From patchwork Thu Oct 20 21:26:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: matthew.gerlach@linux.intel.com X-Patchwork-Id: 617083 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 41817C433FE for ; Thu, 20 Oct 2022 21:26:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229753AbiJTVZ7 (ORCPT ); Thu, 20 Oct 2022 17:25:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38534 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229484AbiJTVZ5 (ORCPT ); Thu, 20 Oct 2022 17:25:57 -0400 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3A09117E23B; Thu, 20 Oct 2022 14:25:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1666301156; x=1697837156; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=U1DYLh1b+Wg7DObvnlquUyu7vJlxjG15w2qXKEefn3s=; b=RTpYZTuJS9JpHLhxzdQwvlx1YQoDAi2Vg83pWoRkv7KOowfbrSwV7dJu IvG3sCHdQJTd+E93ZA8aA3aWj9fuxdrMdm9nnpqt0MOTJ1HJu6/wICLt1 erYIf5/PRpCRqEFsij0hBhW+f1Zw8mPrdlJ0tL5+Gupfgi5SG9Pds9cef uZwA1M0gzQZCplpt4ZwHPDdzRDl+nYcRqzS/wnihqwnzvzHDky61VbN8b C5ett6Q9tChnxnXm7IsNP0EXFbDuPOJe/nqs8XElFF7H8rVrXdEZsNUQ/ 5CnmGy/54RJ/AQN9upK9Wm/7iD7UF4XZ1L4BqZUU3ovOGgWQWAJG+oHUZ g==; X-IronPort-AV: E=McAfee;i="6500,9779,10506"; a="333412429" X-IronPort-AV: E=Sophos;i="5.95,199,1661842800"; d="scan'208";a="333412429" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Oct 2022 14:25:55 -0700 X-IronPort-AV: E=McAfee;i="6500,9779,10506"; a="693260664" X-IronPort-AV: E=Sophos;i="5.95,199,1661842800"; d="scan'208";a="693260664" Received: from rhweight-wrk1.ra.intel.com ([137.102.106.139]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Oct 2022 14:25:55 -0700 From: matthew.gerlach@linux.intel.com To: hao.wu@intel.com, yilun.xu@intel.com, russell.h.weight@intel.com, basheer.ahmed.muddebihal@intel.com, trix@redhat.com, mdf@kernel.org, linux-fpga@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, tianfei.zhang@intel.com, corbet@lwn.net, gregkh@linuxfoundation.org, linux-serial@vger.kernel.org, jirislaby@kernel.org, geert+renesas@glider.be, andriy.shevchenko@linux.intel.com, niklas.soderlund+renesas@ragnatech.se, macro@orcam.me.uk, johan@kernel.org, lukas@wunner.de, ilpo.jarvinen@linux.intel.com, marpagan@redhat.com Cc: Matthew Gerlach Subject: [PATCH v4 0/4] Enhance definition of DFH and use enhancements for uart driver Date: Thu, 20 Oct 2022 14:26:06 -0700 Message-Id: <20221020212610.697729-1-matthew.gerlach@linux.intel.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org From: Matthew Gerlach This patchset enhances the definition of the Device Feature Header (DFH) used by the Device Feature List (DFL) bus and then uses the new enhancements in a uart driver. Patch 1 updates the DFL documentation to provide the motivation behind the enhancements to the definition of the DFH. Patch 2 adds the definitions for DFHv1. Patch 3 adds basic support DFHv1. It provides a generic mechanism for describing MSIX interrupts used by a particular feature instance, and it gets the location and size of the feature's register set from DFHv1. Patch 4 adds a DFL uart driver that makes use of the new features of DFHv1. Basheer Ahmed Muddebihal (1): fpga: dfl: Add DFHv1 Register Definitions Matthew Gerlach (3): Documentation: fpga: dfl: Add documentation for DFHv1 fpga: dfl: add basic support DFHv1 tty: serial: 8250: add DFL bus driver for Altera 16550. Documentation/fpga/dfl.rst | 96 ++++++++++++ drivers/fpga/dfl.c | 234 +++++++++++++++++++++++------ drivers/fpga/dfl.h | 38 +++++ drivers/tty/serial/8250/8250_dfl.c | 149 ++++++++++++++++++ drivers/tty/serial/8250/Kconfig | 12 ++ drivers/tty/serial/8250/Makefile | 1 + include/linux/dfl.h | 15 ++ 7 files changed, 496 insertions(+), 49 deletions(-) create mode 100644 drivers/tty/serial/8250/8250_dfl.c