From patchwork Wed Aug 18 19:07:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 12445079 X-Patchwork-Delegate: kuba@kernel.org 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 C21DEC4338F for ; Wed, 18 Aug 2021 19:08:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AB91A610E6 for ; Wed, 18 Aug 2021 19:08:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234029AbhHRTJ0 (ORCPT ); Wed, 18 Aug 2021 15:09:26 -0400 Received: from relmlor1.renesas.com ([210.160.252.171]:14414 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S233514AbhHRTJP (ORCPT ); Wed, 18 Aug 2021 15:09:15 -0400 X-IronPort-AV: E=Sophos;i="5.84,332,1620658800"; d="scan'208";a="91033580" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 19 Aug 2021 04:08:37 +0900 Received: from localhost.localdomain (unknown [10.226.93.61]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id BE1AE40D5D67; Thu, 19 Aug 2021 04:08:34 +0900 (JST) From: Biju Das To: "David S. Miller" , Jakub Kicinski Cc: Biju Das , Sergei Shtylyov , Geert Uytterhoeven , Sergey Shtylyov , Adam Ford , Andrew Lunn , Yuusuke Ashizuka , Yoshihiro Shimoda , netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Chris Paterson , Biju Das , Prabhakar Mahadev Lad Subject: [PATCH net-next v3 8/9] ravb: Add internal delay hw feature to struct ravb_hw_info Date: Wed, 18 Aug 2021 20:07:59 +0100 Message-Id: <20210818190800.20191-9-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210818190800.20191-1-biju.das.jz@bp.renesas.com> References: <20210818190800.20191-1-biju.das.jz@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org R-Car Gen3 supports TX and RX clock internal delay modes, whereas R-Car Gen2 and RZ/G2L do not support it. Add an internal_delay hw feature bit to struct ravb_hw_info to enable this only for R-Car Gen3. Signed-off-by: Biju Das Reviewed-by: Lad Prabhakar Reviewed-by: Andrew Lunn Reviewed-by: Sergei Shtylyov --- v2->v3: * No change. Only comments updated * Added Rb tag from Andrew and Sergei. v2: * Incorporated Andrew and Sergei's review comments for making it smaller patch and provided detailed description. --- drivers/net/ethernet/renesas/ravb.h | 3 +++ drivers/net/ethernet/renesas/ravb_main.c | 6 ++++-- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h index 85eb3c69ac32..65a13ad458e6 100644 --- a/drivers/net/ethernet/renesas/ravb.h +++ b/drivers/net/ethernet/renesas/ravb.h @@ -997,6 +997,9 @@ struct ravb_hw_info { int stats_len; size_t max_rx_len; unsigned aligned_tx: 1; + + /* hardware features */ + unsigned internal_delay:1; /* AVB-DMAC has internal delays */ }; struct ravb_private { diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 6b209ad19de7..2fe4b9231523 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -1936,6 +1936,7 @@ static const struct ravb_hw_info ravb_gen3_hw_info = { .chip_id = RCAR_GEN3, .stats_len = ARRAY_SIZE(ravb_gstrings_stats), .max_rx_len = RX_BUF_SZ + RAVB_ALIGN - 1, + .internal_delay = 1, }; static const struct ravb_hw_info ravb_gen2_hw_info = { @@ -2175,7 +2176,7 @@ static int ravb_probe(struct platform_device *pdev) /* Request GTI loading */ ravb_modify(ndev, GCCR, GCCR_LTI, GCCR_LTI); - if (priv->chip_id != RCAR_GEN2) { + if (info->internal_delay) { ravb_parse_delay_mode(np, ndev); ravb_set_delay_mode(ndev); } @@ -2348,6 +2349,7 @@ static int __maybe_unused ravb_resume(struct device *dev) { struct net_device *ndev = dev_get_drvdata(dev); struct ravb_private *priv = netdev_priv(ndev); + const struct ravb_hw_info *info = priv->info; int ret = 0; /* If WoL is enabled set reset mode to rearm the WoL logic */ @@ -2370,7 +2372,7 @@ static int __maybe_unused ravb_resume(struct device *dev) /* Request GTI loading */ ravb_modify(ndev, GCCR, GCCR_LTI, GCCR_LTI); - if (priv->chip_id != RCAR_GEN2) + if (info->internal_delay) ravb_set_delay_mode(ndev); /* Restore descriptor base address table */