From patchwork Sun Jul 10 15:03:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lino Sanfilippo X-Patchwork-Id: 589333 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 4680CCCA482 for ; Sun, 10 Jul 2022 15:04:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229591AbiGJPEK (ORCPT ); Sun, 10 Jul 2022 11:04:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57828 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229570AbiGJPEE (ORCPT ); Sun, 10 Jul 2022 11:04:04 -0400 Received: from mout.gmx.net (mout.gmx.net [212.227.15.15]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BDECF64C9; Sun, 10 Jul 2022 08:03:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1657465409; bh=bCCo/6Am2R09b4nHHeMnoc0FW6xyrYI6zkvE1m2Jm4A=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date; b=Y/FtNncUF0YYrHQPa7Evn+Mb1X+P6w+n53UBeJWw/TLxD9fLIWe4cYb5JVkpuh/LY J6yKdBT8hBDADzp61Bd9gjm761JMMmgW8xDryyqHOI6RZZc37HF/F0KR3woiBY3qma a5S8c5/uYkYaBixTKAKVLnWbJMTt8MipDb/cI4CY= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from localhost.localdomain ([46.223.3.243]) by mail.gmx.net (mrgmx004 [212.227.17.190]) with ESMTPSA (Nemesis) id 1MTzay-1o16Gp0pN4-00R1T5; Sun, 10 Jul 2022 17:03:29 +0200 From: Lino Sanfilippo To: gregkh@linuxfoundation.org, jirislaby@kernel.org Cc: ilpo.jarvinen@linux.intel.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, andriy.shevchenko@linux.intel.com, vz@mleia.com, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, lukas@wunner.de, p.rosenberger@kunbus.com, Lino Sanfilippo Subject: [PATCH v3 0/8] Fixes and cleanup for RS485 Date: Sun, 10 Jul 2022 17:03:14 +0200 Message-Id: <20220710150322.2846170-1-LinoSanfilippo@gmx.de> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Provags-ID: V03:K1:AQK75PXDxb8ruYEg4RoE/3q8W5jyQVLOL7VSy14r6hTADfPrxRR 2EbnzXFyawPbUTdYZQ/ykqJKFLSyDxYcCc08iF0u2+el+0T+7zW5bDItAYoYWxe3511SRjH zp/O8BrHcMqU/cDJZgQ4MVXQTW6Et4MLmXF3DcBOFk/Wuhs8hS2Fr2VtDYI57ufmxEJqifA IPJjiw/8Pc0Dd34+hAq9Q== X-UI-Out-Filterresults: notjunk:1;V03:K0:iEbjkL/2hfg=:niaR/DQ/WNAO6Mr0TXesA4 7gn2DKaXLYCgjGJL2cwr1hYeBSQlm6MDWRht1KOpSsbmy84kuixgGaBBnTit/j1M+oBo+7zWJ vfuJvSxvNdbAoMEtkuorCq3NiLx//sSXBICZtJl1r7xqWTFCJh/bdcBLGkwomox8iiZ7aXVap Phg62UdCotuVHHhhurjq3Vuuk0djKShT9X/eaoBahL+Hv1EN/wKxLTAXbXozbiDUbXl1rZloD dq9LKR8SEtyoaQGOD3iXvdQUMMGp7xl/DS7zzfRZHdwrZtQsUKJTfaFFxOBnslYgFrRyhAnFL VNCWK8rZ2Xn20f+b7IwUlvO+LFwJNhY0Htlh+sflUYcMCEqKCW+mvewG9r9+WX/QvdHVs0jrQ jkZfDYVdALp3UAF6MYceVzVzEqyZm6aRgEZcRXb0w24Y2InldZzLlzbSTWvkgnu0kW9w6jSuQ 4emzhGykA3e54lc6Q1PDKrG7/jHDGfZJvHfgPW7D1/VW4GxANbWwDMUhbaKhhAJ+nDqS8EEqI 32Q9bWREoZernoY7W1FZp3PomWZCPaRVYbIJNMVQ+IL8lgBlqI/UeX8VrP8jQIxrIVuieG2mI pbAJ3ikBRKTX9N03+1P5Cbq4dbBK9ZbjJxHpo+Lx5wf8gsbLjtwY5m9y1fNczx7H7H0JwL11x +jHaPn9IFqmnkZG/gXFCqx6ndTC9iwT+A0jEt+29vSt5BZcrRFsSO7Jt6D+xb5yY+2LsQyKC1 4qWJqPmL4fJecPQdo1D1YAOEjjd3zdX0fJDY7OBQDgIAmwgH1hf5+7E6ZagYAmMHyKTZzTGLA b//NE1vryMacSFEGt4EkZHg1akzOtylW79Fxl3WsVUNsO2lmivS35ZFGneE8Azqtih4zUmRT7 ShJ44SyU5NSFj0kCy1cPTNVQ1JYVQL7dod037n/c9d7V+71dOSMBJRyedPiqid0xEssXHpJzu B/bBcL3c9S240qIDXh9PcCSAl6RYvwH88PeIV4UEIXgrCt2yF0x9gn9CtkEhdJqOU49bVXnmk 2XCJ4Wtp/5dihsnOrvhBsmfURyI7qp77S+rUTuceEwJjmEOiRjuqBprf4F5RCzGIL48zGYhrF W4Lz0XotMr7jvXfdNwrZsLz+FJct55QDAupfTMGhtfrPJkcXiC8DfoH3w== Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org From: Lino Sanfilippo The following series includes cleanup and fixes around RS485 in the serial core and uart drivers: Patch 1: ar933x: Fix check for RS485 support Patch 2: Remove superfluous code in ar933x. Patch 3: Set the rs485 termination GPIO in the serial core. This is needed since if the gpio is only accessible in sleepable context. It also is a further step to make the RS485 handling more generic. Patch 4: Move sanitizing of RS485 delays into an own function. This is in preparation of patch 4. Patch 5: Sanitize RS485 delays read from device tree. Patch 6: Correct RS485 delays in binding documentation. Patch 7: Remove redundant code in 8250_dwlib. Patch 8: Remove redundant code in 8250-lpc18xx. Changes in v3: - remove obsolete patch (due to changes by Ilpo) - corrected and rephrase commit messages (pointed out by Andy) - remove superfluous check (pointed out by Andy) - separate ar933x UART bugfix and cleanup into different patches (as suggested by Ilpo) - put the ar933x fix at the beginning of the series (as suggested by Andy) Changes in v2: - print a warning if termination GPIO is specified in DT/ACPI but is not supported by driver - fixed commit message for devtree documentation (as suggested by Andy) - fixed code comment - added patch 7 Lino Sanfilippo (8): serial: ar933x: Fix check for RS485 support serial: ar933x: Remove superfluous code in ar933x_config_rs485() serial: core, 8250: set RS485 termination gpio in serial core serial: core: move sanitizing of RS485 delays into own function serial: core: sanitize RS485 delays read from device tree dt_bindings: rs485: Correct delay values serial: 8250_dwlib: remove redundant sanity check for RS485 flags serial: 8250: lpc18xx: Remove redundant sanity check for RS485 flags .../devicetree/bindings/serial/rs485.yaml | 4 +- drivers/tty/serial/8250/8250_dwlib.c | 10 +--- drivers/tty/serial/8250/8250_lpc18xx.c | 6 +- drivers/tty/serial/8250/8250_port.c | 3 - drivers/tty/serial/ar933x_uart.c | 18 ++---- drivers/tty/serial/serial_core.c | 60 ++++++++++++------- 6 files changed, 50 insertions(+), 51 deletions(-) base-commit: 7e5b4322cde067e1d0f1bf8f490e93f664a7c843