From patchwork Thu Jul 9 18:43:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Healy X-Patchwork-Id: 1326149 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=K5VfzWBr; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4B2lSN3nSrz9sRk for ; Fri, 10 Jul 2020 04:43:48 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726693AbgGISnp (ORCPT ); Thu, 9 Jul 2020 14:43:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57954 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726116AbgGISno (ORCPT ); Thu, 9 Jul 2020 14:43:44 -0400 Received: from mail-pf1-x441.google.com (mail-pf1-x441.google.com [IPv6:2607:f8b0:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D6E1BC08C5CE; Thu, 9 Jul 2020 11:43:43 -0700 (PDT) Received: by mail-pf1-x441.google.com with SMTP id a14so1397366pfi.2; Thu, 09 Jul 2020 11:43:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=zrAh6RYH46bGf89a0AIXAF4lgmMCYC94Zg5yeKwIb90=; b=K5VfzWBrCKorOTK9sywIZ2ezQEBFSf68ClRpb62R75JqyiSC0cigFG4M12kwfnkZJB YS1znwCzMogJ9A4CzZoFJ4PzglUzTeS/cav8KLyh83v2x/jGKPR+biiouY7Sys8W5PO+ U5nFN3YHXYehFlg/d3nwC51Qy8CrQ5m10Yp7zaNraD4ZvUM0nNYVEnjGkJkdqmsIzj9g 4ARnHW87kYuL/IJCgIjC5rERRzRry1K1uFIPXvp2gO4k+Nxf3S25yOMZ6Qju4XtPox5w W3CtPIsuRPGQ9KMr8k0ZLossjF5TXKsGlKeGvhaXQ7arERslDeEkWFY6SNdeLUGIBwJD KdSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=zrAh6RYH46bGf89a0AIXAF4lgmMCYC94Zg5yeKwIb90=; b=jponwZNtfzbSYb3ofS6TcelvnPE13oHKNBRjCSVSh2VQqBxzSB5lkpwknslhn/Jh9K jmg8gkUHF/P9A1u4Dovx4dyG3YYE2v/XlWaMpVJtN0RoLsMCTEJFD4Goh/ko9kYvhz18 YvTPdl/dtCYwF8Ggcw2IJxn92vHj+I4m5B6yTyu68KkBnpHxY6KPQkW/S8gF3Riq8wF2 /OymuNLnSceiEGWkFK+Tgtxs7KnOTvqHeWSzW4DfeC6PRxdr7Gk4gyGJ30LMxDsI85Qe B98thCC2WzODZsryVhKwOVDeObBPnkf5VXZCLwYwhUWozcdZDSBCJ8URTmk+vYY7hMHX 9eiQ== X-Gm-Message-State: AOAM5303UXb3Q/1Cf+IzITu+8EwIrEqymTs2az10viNUysoLUWZxVdmU +ORqE2Wh06SD1FyBD4EINcU= X-Google-Smtp-Source: ABdhPJwu5oDS2DXNshKPqNoq+4Y55IgTBjP8/9OTn6H0r/sEvI8hDdQDCjjuDo8uACUiWYd5RoHW5A== X-Received: by 2002:a65:4c0b:: with SMTP id u11mr53908414pgq.383.1594320223339; Thu, 09 Jul 2020 11:43:43 -0700 (PDT) Received: from localhost.localdomain.com ([2605:e000:160b:911f:a2ce:c8ff:fe03:6cb0]) by smtp.gmail.com with ESMTPSA id s22sm3553999pfm.164.2020.07.09.11.43.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Jul 2020 11:43:42 -0700 (PDT) From: Chris Healy To: andrew@lunn.ch, vivien.didelot@gmail.com, f.fainelli@gmail.com, davem@davemloft.net, kuba@kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Chris Healy Subject: [PATCH net-next] net: dsa: mv88e6xxx: Add serdes read/write dynamic debug Date: Thu, 9 Jul 2020 11:43:18 -0700 Message-Id: <20200709184318.4192-1-cphealy@gmail.com> X-Mailer: git-send-email 2.21.3 MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Add deb_dbg print statements in both serdes_read and serdes_write functions. Signed-off-by: Chris Healy --- drivers/net/dsa/mv88e6xxx/serdes.c | 27 +++++++++++++++++++++++++-- 1 file changed, 25 insertions(+), 2 deletions(-) diff --git a/drivers/net/dsa/mv88e6xxx/serdes.c b/drivers/net/dsa/mv88e6xxx/serdes.c index 9c07b4f3d345..756b34343547 100644 --- a/drivers/net/dsa/mv88e6xxx/serdes.c +++ b/drivers/net/dsa/mv88e6xxx/serdes.c @@ -20,14 +20,25 @@ static int mv88e6352_serdes_read(struct mv88e6xxx_chip *chip, int reg, u16 *val) { - return mv88e6xxx_phy_page_read(chip, MV88E6352_ADDR_SERDES, + int err; + + err = mv88e6xxx_phy_page_read(chip, MV88E6352_ADDR_SERDES, MV88E6352_SERDES_PAGE_FIBER, reg, val); + + if (err) + return err; + + dev_dbg(chip->dev, "serdes <- reg: 0x%.2x val: 0x%.2x\n", reg, *val); + + return 0; } static int mv88e6352_serdes_write(struct mv88e6xxx_chip *chip, int reg, u16 val) { + dev_dbg(chip->dev, "serdes -> reg: 0x%.2x val: 0x%.2x\n", reg, val); + return mv88e6xxx_phy_page_write(chip, MV88E6352_ADDR_SERDES, MV88E6352_SERDES_PAGE_FIBER, reg, val); @@ -37,8 +48,17 @@ static int mv88e6390_serdes_read(struct mv88e6xxx_chip *chip, int lane, int device, int reg, u16 *val) { int reg_c45 = MII_ADDR_C45 | device << 16 | reg; + int err; + + err = mv88e6xxx_phy_read(chip, lane, reg_c45, val); + if (err) + return err; + + dev_dbg(chip->dev, "serdes <- lane: %.2d device: 0x%.2x reg_c45: 0x%.4x val: 0x%.4x\n", + lane, device, reg_c45, *val); + + return 0; - return mv88e6xxx_phy_read(chip, lane, reg_c45, val); } static int mv88e6390_serdes_write(struct mv88e6xxx_chip *chip, @@ -46,6 +66,9 @@ static int mv88e6390_serdes_write(struct mv88e6xxx_chip *chip, { int reg_c45 = MII_ADDR_C45 | device << 16 | reg; + dev_dbg(chip->dev, "serdes -> lane: %.2d device: 0x%.2x reg_c45: 0x%.4x val: 0x%.4x\n", + lane, device, reg_c45, val); + return mv88e6xxx_phy_write(chip, lane, reg_c45, val); }