From patchwork Wed Aug 12 12:33:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mateusz Holenko X-Patchwork-Id: 258143 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING, SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13C03C433DF for ; Wed, 12 Aug 2020 12:33:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E154E2080C for ; Wed, 12 Aug 2020 12:33:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=antmicro.com header.i=@antmicro.com header.b="E1Oyp1cD" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727992AbgHLMd5 (ORCPT ); Wed, 12 Aug 2020 08:33:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56848 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726722AbgHLMd4 (ORCPT ); Wed, 12 Aug 2020 08:33:56 -0400 Received: from mail-lj1-x241.google.com (mail-lj1-x241.google.com [IPv6:2a00:1450:4864:20::241]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 824DCC06174A for ; Wed, 12 Aug 2020 05:33:56 -0700 (PDT) Received: by mail-lj1-x241.google.com with SMTP id w25so1996481ljo.12 for ; Wed, 12 Aug 2020 05:33:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=antmicro.com; s=google; h=date:from:to:cc:subject:message-id:mime-version:content-disposition; bh=aQwP/0l0m5s+Hp6E9P2OaxabPF+ONqwtg5F3idJNxeo=; b=E1Oyp1cDKNXa/qL202tPvk+586jn7dzdRSDowWFBi3ibjreBcyongiJbYLzZBNs6Hb SFS3+XBKWcjS61acKhdJbl8jzFYrrFWYhFIraeQqVwPb8oUHSuh95BulF1qr12dxVbzt T9g/bX5P68NjhX8eRtvn2abSXpl3pyPCHNZrQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition; bh=aQwP/0l0m5s+Hp6E9P2OaxabPF+ONqwtg5F3idJNxeo=; b=B+k/afnkrB+QfVerwhwgYTgZ6FEDQmDKzKgUreUTdEhE9jgbcWHxKIHOZVN3M61JkJ 4eiW4pnNsZaR2BSPhSJbHjgeNb9XbMqmI/tcDCDhgK811NhocLMcNJ8iajBQUMSLgZg/ qy4hdEfbwzWFZG4Mc95zVkMkR1NyfoIuxp9XeIFAiLOrayvvyUq7LoejtYKdWmSbZ/32 YaQ4ONlJLmwt3uFS/ixQL/1ndiQw1XBwx9NqTX4vMZCu22ohbUuD6MPTOzzatV5EqK01 KevAArA7BjVc1o60/3INLCn1CcUYNew6adZ5g6zpZyL3u4ah2R55nE3F0G1g2p5dHCWA Kecw== X-Gm-Message-State: AOAM530D+L0PXnZyAPw4Rj6gBHapMfqnpJzx0M5HP//gUiF9ZpmHb9GM MnME/O9xtQebmMK52ss8wMQEvA== X-Google-Smtp-Source: ABdhPJzDLRNV6Ipk/5lW5Sc5MeOljidE0sbnR7D6ZFavmHh+RRkNYPs6cq5l1Du/GfScLPHm/VvzXQ== X-Received: by 2002:a2e:302:: with SMTP id 2mr4821823ljd.156.1597235635003; Wed, 12 Aug 2020 05:33:55 -0700 (PDT) Received: from localhost.localdomain (d79-196.icpnet.pl. [77.65.79.196]) by smtp.gmail.com with ESMTPSA id r19sm414364ljc.59.2020.08.12.05.33.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Aug 2020 05:33:54 -0700 (PDT) Date: Wed, 12 Aug 2020 14:33:46 +0200 From: Mateusz Holenko To: Rob Herring , Mark Rutland , Greg Kroah-Hartman , Jiri Slaby , devicetree@vger.kernel.org, linux-serial@vger.kernel.org Cc: Stafford Horne , Karol Gugala , Mateusz Holenko , Mauro Carvalho Chehab , "David S. Miller" , "Paul E. McKenney" , Filip Kokosinski , Pawel Czarnecki , Joel Stanley , Jonathan Cameron , Maxime Ripard , Shawn Guo , Heiko Stuebner , Sam Ravnborg , Icenowy Zheng , Laurent Pinchart , linux-kernel@vger.kernel.org, "Gabriel L. Somlo" Subject: [PATCH v10 0/5] LiteX SoC controller and LiteUART serial driver Message-ID: <20200812143324.2394375-0-mholenko@antmicro.com> MIME-Version: 1.0 Content-Disposition: inline Sender: linux-serial-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org This patchset introduces support for LiteX SoC Controller and LiteUART - serial device from LiteX SoC builder (https://github.com/enjoy-digital/litex). In the following patchset I will add a new mor1kx-based (OpenRISC) platform that uses this device. Later I plan to extend this platform by adding support for more devices from LiteX suite. Changes in v10: - added casting to avoid sparse warnings in the SoC Controller's driver Changes in v9: - fixed the `reg` node notation in the DT example - added exporting of the `litex_set_reg`/`litex_get_reg` symbols Changes in v8: - fixed help messages in LiteUART's KConfig - removed dependency between LiteUART and LiteX SoC drivers - removed `litex_check_accessors()` helper function - added crashing (BUG) on the failed LiteX CSR access test Changes in v7: - added missing include directive in UART's driver Changes in v6: - changed accessors in SoC Controller's driver - reworked UART driver Changes in v5: - added Reviewed-by tag - removed custom accessors from SoC Controller's driver - fixed error checking in SoC Controller's driver Changes in v4: - fixed copyright headers - fixed SoC Controller's yaml - simplified SoC Controller's driver Changes in v3: - added Acked-by and Reviewed-by tags - introduced LiteX SoC Controller driver - removed endianness detection (handled now by LiteX SoC Controller driver) - modified litex.h header - DTS aliases for LiteUART made optional - renamed SERIAL_LITEUART_NR_PORTS to SERIAL_LITEUART_MAX_PORTS - changed PORT_LITEUART from 122 to 123 Changes in v2: - binding description rewritten to a yaml schema file - added litex.h header with common register access functions Filip Kokosinski (3): dt-bindings: vendor: add vendor prefix for LiteX dt-bindings: serial: document LiteUART bindings drivers/tty/serial: add LiteUART driver Pawel Czarnecki (2): dt-bindings: soc: document LiteX SoC Controller bindings drivers/soc/litex: add LiteX SoC Controller driver .../bindings/serial/litex,liteuart.yaml | 38 ++ .../soc/litex/litex,soc-controller.yaml | 39 ++ .../devicetree/bindings/vendor-prefixes.yaml | 2 + MAINTAINERS | 9 + drivers/soc/Kconfig | 1 + drivers/soc/Makefile | 1 + drivers/soc/litex/Kconfig | 15 + drivers/soc/litex/Makefile | 3 + drivers/soc/litex/litex_soc_ctrl.c | 194 +++++++++ drivers/tty/serial/Kconfig | 32 ++ drivers/tty/serial/Makefile | 1 + drivers/tty/serial/liteuart.c | 402 ++++++++++++++++++ include/linux/litex.h | 24 ++ 13 files changed, 761 insertions(+) create mode 100644 Documentation/devicetree/bindings/serial/litex,liteuart.yaml create mode 100644 Documentation/devicetree/bindings/soc/litex/litex,soc-controller.yaml create mode 100644 drivers/soc/litex/Kconfig create mode 100644 drivers/soc/litex/Makefile create mode 100644 drivers/soc/litex/litex_soc_ctrl.c create mode 100644 drivers/tty/serial/liteuart.c create mode 100644 include/linux/litex.h