From patchwork Thu Jun 1 14:14:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Chevallier X-Patchwork-Id: 13263868 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E90EBC77B7A for ; Thu, 1 Jun 2023 14:15:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=VMV4qPkOHodajFVb/AuEsAuZujbhdk+3KlFu+5Lc71U=; b=OrE4Kskj8yFLYO IuEX3AOo5Fb//v/Vx0ISRGETzJ083r9Y526cHwglycm5frm3vy16uktWKK6xgfel+hFDWJyBzhbS5 SGOP21wkWqbmmHhyUaBHu8sNTVmvcP47Uyw8lAOw/FM1WdrThh24uAl+EgoMw/JGNc38wwkS84GJp EGrtI8ymteQ+gHtOUNCY41NZw86cTrkfFOy5TjQflGwcVNvvH80HTUW1t5xtxGRDh2PQS44OXiExc 4Zdqq1q6wmQT94v7BDHFO+cpO/YK8+4rRQafN5HH0J3bqKpmY1DXxNKlSHlmJqH8V7DYZajPnJ/mX tQ2SdZOGQlsUBwI0/Q5g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1q4j58-003o1k-2a; Thu, 01 Jun 2023 14:15:14 +0000 Received: from relay7-d.mail.gandi.net ([2001:4b98:dc4:8::227]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1q4j55-003nzS-2l for linux-arm-kernel@lists.infradead.org; Thu, 01 Jun 2023 14:15:13 +0000 X-GND-Sasl: maxime.chevallier@bootlin.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1685628910; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=FbF9YiR1UaImGOv/TekzB+7e07IepTmsR1e+tk9jk7k=; b=PgLJCyf/9Ceg6ezO92AoOw3M45jJiJpxeHT6se9mGNWfy3rdZ/7POe5sNa709xNJgM9D3L Vu0riRXXSojli6ajUMXnXhsUKuc3cfhuYodGJy2x+p9aekpxL0cznTXQ9+AJ+xMLfNR8t0 9hx1PEtVJ5yyFQeb2K/RchX4ub+yoepPHmF+k9wUsZBclbXskih6rX7b+fB+GWBihnepW4 VlCaEH6sjw4rJKftp0TS97MFzkjnsSdvagHUkRIITlo0d0aU6NtDg+7gkdwKry3TBvc2q1 zkL9VhNZNeL1fgJq9mcBeHMCp//pu4B/kwrqPmshuLHcYBOZN9XP50JL2IQOzg== X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com X-GND-Sasl: maxime.chevallier@bootlin.com Received: by mail.gandi.net (Postfix) with ESMTPSA id 219A62000A; Thu, 1 Jun 2023 14:15:07 +0000 (UTC) From: Maxime Chevallier To: Mark Brown , davem@davemloft.net Cc: Maxime Chevallier , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, alexis.lothore@bootlin.com, thomas.petazzoni@bootlin.com, Andrew Lunn , Jakub Kicinski , Eric Dumazet , Paolo Abeni , Florian Fainelli , Heiner Kallweit , Russell King , Vladimir Oltean , Ioana Ciornei , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, Maxime Coquelin , Jose Abreu , Alexandre Torgue , Giuseppe Cavallaro , Simon Horman Subject: [PATCH net-next v4 2/4] net: ethernet: altera-tse: Convert to mdio-regmap and use PCS Lynx Date: Thu, 1 Jun 2023 16:14:52 +0200 Message-Id: <20230601141454.67858-3-maxime.chevallier@bootlin.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230601141454.67858-1-maxime.chevallier@bootlin.com> References: <20230601141454.67858-1-maxime.chevallier@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230601_071512_192921_770ECD67 X-CRM114-Status: GOOD ( 20.22 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The newly introduced regmap-based MDIO driver allows for an easy mapping of an mdiodevice onto the memory-mapped TSE PCS, which is actually a Lynx PCS. Convert Altera TSE to use this PCS instead of the pcs-altera-tse, which is nothing more than a memory-mapped Lynx PCS. Signed-off-by: Maxime Chevallier Reviewed-by: Simon Horman --- V3->V4 : - Use pcs_lynxcreate()/destroy() introduced by Russell - Fix the error path - Add back misplaced KConfig dependencies V2->V3 : No changes V1->V2 : No changes drivers/net/ethernet/altera/Kconfig | 2 + drivers/net/ethernet/altera/altera_tse_main.c | 57 ++++++++++++++++--- 2 files changed, 50 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/altera/Kconfig b/drivers/net/ethernet/altera/Kconfig index dd7fd41ccde5..93533ba03429 100644 --- a/drivers/net/ethernet/altera/Kconfig +++ b/drivers/net/ethernet/altera/Kconfig @@ -5,6 +5,8 @@ config ALTERA_TSE select PHYLIB select PHYLINK select PCS_ALTERA_TSE + select MDIO_REGMAP + select REGMAP_MMIO help This driver supports the Altera Triple-Speed (TSE) Ethernet MAC. diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c index 190ff1bcd94e..d866c0f1b503 100644 --- a/drivers/net/ethernet/altera/altera_tse_main.c +++ b/drivers/net/ethernet/altera/altera_tse_main.c @@ -27,14 +27,16 @@ #include #include #include +#include #include #include #include #include #include -#include +#include #include #include +#include #include #include @@ -1132,13 +1134,16 @@ static int request_and_map(struct platform_device *pdev, const char *name, static int altera_tse_probe(struct platform_device *pdev) { const struct of_device_id *of_id = NULL; + struct regmap_config pcs_regmap_cfg; struct altera_tse_private *priv; + struct mdio_regmap_config mrc; struct resource *control_port; + struct regmap *pcs_regmap; struct resource *dma_res; struct resource *pcs_res; + struct mii_bus *pcs_bus; struct net_device *ndev; void __iomem *descmap; - int pcs_reg_width = 2; int ret = -ENODEV; ndev = alloc_etherdev(sizeof(struct altera_tse_private)); @@ -1255,12 +1260,32 @@ static int altera_tse_probe(struct platform_device *pdev) * address space, but if it's not the case, we fallback to the mdiophy0 * from the MAC's address space */ - ret = request_and_map(pdev, "pcs", &pcs_res, - &priv->pcs_base); + ret = request_and_map(pdev, "pcs", &pcs_res, &priv->pcs_base); if (ret) { + /* If we can't find a dedicated resource for the PCS, fallback + * to the internal PCS, that has a different address stride + */ priv->pcs_base = priv->mac_dev + tse_csroffs(mdio_phy0); - pcs_reg_width = 4; + pcs_regmap_cfg.reg_bits = 32; + /* Values are MDIO-like values, on 16 bits */ + pcs_regmap_cfg.val_bits = 16; + pcs_regmap_cfg.reg_shift = REGMAP_UPSHIFT(2); + } else { + pcs_regmap_cfg.reg_bits = 16; + pcs_regmap_cfg.val_bits = 16; + pcs_regmap_cfg.reg_shift = REGMAP_UPSHIFT(1); + } + + /* Create a regmap for the PCS so that it can be used by the PCS driver */ + pcs_regmap = devm_regmap_init_mmio(&pdev->dev, priv->pcs_base, + &pcs_regmap_cfg); + if (IS_ERR(pcs_regmap)) { + ret = PTR_ERR(pcs_regmap); + goto err_free_netdev; } + mrc.regmap = pcs_regmap; + mrc.parent = &pdev->dev; + mrc.valid_addr = 0x0; /* Rx IRQ */ priv->rx_irq = platform_get_irq_byname(pdev, "rx_irq"); @@ -1384,7 +1409,18 @@ static int altera_tse_probe(struct platform_device *pdev) (unsigned long) control_port->start, priv->rx_irq, priv->tx_irq); - priv->pcs = alt_tse_pcs_create(ndev, priv->pcs_base, pcs_reg_width); + snprintf(mrc.name, MII_BUS_ID_SIZE, "%s-pcs-mii", ndev->name); + pcs_bus = devm_mdio_regmap_register(&pdev->dev, &mrc); + if (IS_ERR(pcs_bus)) { + ret = PTR_ERR(pcs_bus); + goto err_init_pcs; + } + + priv->pcs = lynx_pcs_create_mdiodev(pcs_bus, 0); + if (IS_ERR(priv->pcs)) { + ret = PTR_ERR(priv->pcs); + goto err_init_pcs; + } priv->phylink_config.dev = &ndev->dev; priv->phylink_config.type = PHYLINK_NETDEV; @@ -1407,12 +1443,13 @@ static int altera_tse_probe(struct platform_device *pdev) if (IS_ERR(priv->phylink)) { dev_err(&pdev->dev, "failed to create phylink\n"); ret = PTR_ERR(priv->phylink); - goto err_init_phy; + goto err_init_phylink; } return 0; - -err_init_phy: +err_init_phylink: + lynx_pcs_destroy(priv->pcs); +err_init_pcs: unregister_netdev(ndev); err_register_netdev: netif_napi_del(&priv->napi); @@ -1433,6 +1470,8 @@ static int altera_tse_remove(struct platform_device *pdev) altera_tse_mdio_destroy(ndev); unregister_netdev(ndev); phylink_destroy(priv->phylink); + lynx_pcs_destroy(priv->pcs); + free_netdev(ndev); return 0;