From patchwork Wed Sep 14 23:12:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matej Vasilevski X-Patchwork-Id: 605912 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 CEAA7C6FA82 for ; Wed, 14 Sep 2022 23:15:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229629AbiINXP6 (ORCPT ); Wed, 14 Sep 2022 19:15:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34726 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229518AbiINXP5 (ORCPT ); Wed, 14 Sep 2022 19:15:57 -0400 Received: from mxd1.seznam.cz (mxd1.seznam.cz [IPv6:2a02:598:a::78:210]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DCAC4832EE; Wed, 14 Sep 2022 16:15:55 -0700 (PDT) Received: from email.seznam.cz by email-smtpc30a.ko.seznam.cz (email-smtpc30a.ko.seznam.cz [10.53.18.44]) id 0aa2f93eee0e2a000b7f5850; Thu, 15 Sep 2022 01:15:49 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=seznam.cz; s=beta; t=1663197349; bh=vttjsrrKYHZff055eJ7HDwEzNJ9lp5KqYVC8udeORe4=; h=Received:From:To:Cc:Subject:Date:Message-Id:X-Mailer:MIME-Version: Content-Transfer-Encoding; b=gIEU5YQma9cwg4duemaOXqae+/WFlMU/BB3eg2xTQN/WF6pBk0+4BTOzTByW+IRxt ABLH+pUWnVRht7c7rCom7rMONzSKhk32l/6LHJaxafSDCsWJ1EthjG3272eHofsnQ+ oUKuRPcmny/33lImCk+JG9ZzxcxYTEVbb4nTIKo0= Received: from localhost.localdomain (2a02:8308:900d:2400:4bcc:f22e:1266:5194 [2a02:8308:900d:2400:4bcc:f22e:1266:5194]) by email-relay23.ko.seznam.cz (Seznam SMTPD 1.3.137) with ESMTP; Thu, 15 Sep 2022 01:13:17 +0200 (CEST) From: Matej Vasilevski To: Pavel Pisa , Ondrej Ille , Wolfgang Grandegger , Marc Kleine-Budde , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski Cc: linux-can@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, Matej Vasilevski Subject: [PATCH v3 0/3] can: ctucanfd: hardware rx timestamps reporting Date: Thu, 15 Sep 2022 01:12:46 +0200 Message-Id: <20220914231249.593643-1-matej.vasilevski@seznam.cz> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Hello, this is the v3 patch for CTU CAN FD hardware timestamps reporting. Changes since v2: https://lore.kernel.org/all/20220801184656.702930-1-matej.vasilevski@seznam.cz/t/#u - proper timestamping clock handling - clocks manually enabled using clk_prepare_enable, then managed by runtime PM (if runtime PM is enabled) - driver should work even without CONFIG_PM - access to the timecounter is now protected by a spinlock - harmonized with Vincent's patch - TX timestamping capability is now correctly reported - work_delay_jiffies stored as unsigned long instead of u32 - max work delay limited to 3600 seconds (instead of 86k seconds) - adressed the rest of the comments from the patch V2 review Changes since v1: https://lore.kernel.org/all/20220512232706.24575-1-matej.vasilevski@seznam.cz/ - Removed kconfig option to enable/disable timestamps. - Removed dt parameters ts-frequency and ts-used-bits. Now the user only needs to add the timestamping clock phandle to clocks, and even that is optional. - Added SIOCSHWTSTAMP ioctl to enable/disable timestamps. - Adressed comments from the RFC review. Matej Vasilevski (3): dt-bindings: can: ctucanfd: add another clock for HW timestamping can: ctucanfd: add HW timestamps to RX and error CAN frames doc: ctucanfd: RX frames timestamping for platform devices .../bindings/net/can/ctu,ctucanfd.yaml | 19 +- .../can/ctu/ctucanfd-driver.rst | 13 +- drivers/net/can/ctucanfd/Makefile | 2 +- drivers/net/can/ctucanfd/ctucanfd.h | 20 ++ drivers/net/can/ctucanfd/ctucanfd_base.c | 235 ++++++++++++++++-- drivers/net/can/ctucanfd/ctucanfd_pci.c | 5 +- drivers/net/can/ctucanfd/ctucanfd_platform.c | 5 +- drivers/net/can/ctucanfd/ctucanfd_timestamp.c | 70 ++++++ 8 files changed, 342 insertions(+), 27 deletions(-) create mode 100644 drivers/net/can/ctucanfd/ctucanfd_timestamp.c base-commit: c9ae520ac3faf2f272b5705b085b3778c7997ec8 --- 2.25.1