From patchwork Fri Mar 1 10:43:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?QXLEsW7DpyDDnE5BTCB2aWEgQjQgUmVsYXk=?= X-Patchwork-Id: 13578317 X-Patchwork-Delegate: kuba@kernel.org Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 64A836BFA7; Fri, 1 Mar 2024 10:42:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709289779; cv=none; b=Th3ipSX+b9dkCaodU4QeX1SgXJ3yDk+L+G1KeR78qOuWlIvVlZtKQtMdL4TqI103Yj3mYQnVeszML8rgCrL8q98VI2uI25bJXcDnZ2031Nr0kmPhOqZnBhJejc2T1Z7tcBICoGd8UMpDxlQ0rp7nPyCnH7Ij8x09KXvrAqsr/sQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709289779; c=relaxed/simple; bh=Jhqq9LDQAWH2mBLmfX78v2OKPVCnCExTEJn5HZPf5HA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=JztPB/pFJeX5Zp5ep8qMVilIGxlej1aQqXChz2IgH24GQOmYef4I7TtnByUFbcRCaEe/vuqwhLDcOxQqsnjG82SK0jJWLUPFLttN/HbWaB8eunI5mfPaBesGUW+eI1roEJKrQ1cP3tSrQJQqmoYXT69GX053mfEbIf1PeDqB5Kg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LH0LnPMF; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LH0LnPMF" Received: by smtp.kernel.org (Postfix) with ESMTPS id E2B56C43394; Fri, 1 Mar 2024 10:42:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1709289779; bh=Jhqq9LDQAWH2mBLmfX78v2OKPVCnCExTEJn5HZPf5HA=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=LH0LnPMFfZp+eXivNF0nwG49fVJOovk728rzsM+zYcuyMYVzhTcXEx99gqjE2oSgj H5davJyisgAFN6a/RSLmtkOalALtmwcpSB6wG+EnuqcPl928lhVJFrh3ZY8QxkYCBT FvjCRdskamRsHX46yBzu8KEI/18sB9aNI8QfYlDiZX4sk15FyER1q6CfmR77lm6usG S1JHHum2Z7/+xHnMaTFYWopj3kliz7baKbQR/g2WWEYlYV2ixJi0zFnns0uiB9gu1a 2uHzCBRCja6rHmPPA5XpEu6+NvjfBUzoRrOQydzY70JEGUGf3EcxL4UEi4vXgfwoYd 7YGz7qhGuP98w== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id CF70AC54E5A; Fri, 1 Mar 2024 10:42:58 +0000 (UTC) From: =?utf-8?b?QXLEsW7DpyDDnE5BTA==?= via B4 Relay Date: Fri, 01 Mar 2024 12:43:00 +0200 Subject: [PATCH net-next v3 4/9] net: dsa: mt7530: get rid of useless error returns on phylink code path Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240301-for-netnext-mt7530-improvements-3-v3-4-449f4f166454@arinc9.com> References: <20240301-for-netnext-mt7530-improvements-3-v3-0-449f4f166454@arinc9.com> In-Reply-To: <20240301-for-netnext-mt7530-improvements-3-v3-0-449f4f166454@arinc9.com> To: Daniel Golle , DENG Qingfang , Sean Wang , Andrew Lunn , Florian Fainelli , Vladimir Oltean , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Matthias Brugger , AngeloGioacchino Del Regno , Russell King Cc: mithat.guner@xeront.com, erkin.bozoglu@xeront.com, Bartel Eerdekens , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, =?utf-8?b?QXLEsW7DpyDDnE5BTA==?= X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1709289776; l=6691; i=arinc.unal@arinc9.com; s=arinc9-Xeront; h=from:subject:message-id; bh=VEHAqivf2wqqhSdVx3RugkanjZYt+1wAB+Gpf3w7Br4=; b=TATdUAB71wjymjCglkL4niT8gvHMVA8Y0wI9Kpz0S8znoAj1zwBN2uCounp0z7U66H7pidPWs dltLIn61sLuBWAYqWNB40WOxx8x5wwViBnUW+J3aHiR+d6qhS6tYY3U X-Developer-Key: i=arinc.unal@arinc9.com; a=ed25519; pk=z49tLn29CyiL4uwBTrqH9HO1Wu3sZIuRp4DaLZvtP9M= X-Endpoint-Received: by B4 Relay for arinc.unal@arinc9.com/arinc9-Xeront with auth_id=137 X-Original-From: =?utf-8?b?QXLEsW7DpyDDnE5BTA==?= Reply-To: X-Patchwork-Delegate: kuba@kernel.org From: Arınç ÜNAL Remove error returns on the cases where they are already handled with the function the mac_port_get_caps member in mt753x_table points to. mt7531_mac_config() is also called from mt7531_cpu_port_config() outside of phylink but the port and interface modes are already handled there. Change the functions and the mac_port_config function pointer to void now that there're no error returns anymore. Remove mt753x_is_mac_port() that used to help the said error returns. On mt7531_mac_config(), switch to if statements to simplify the code. Remove internal phy cases from mt753x_phylink_mac_config(), there is no need to check the interface mode as that's already handled with the function the mac_port_get_caps member in mt753x_table points to. Acked-by: Daniel Golle Tested-by: Daniel Golle Signed-off-by: Arınç ÜNAL Reviewed-by: Russell King (Oracle) --- drivers/net/dsa/mt7530.c | 81 ++++++++++-------------------------------------- drivers/net/dsa/mt7530.h | 6 ++-- 2 files changed, 19 insertions(+), 68 deletions(-) diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c index 296711fd5c43..c069bf273733 100644 --- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -2587,7 +2587,7 @@ static void mt7988_mac_port_get_caps(struct dsa_switch *ds, int port, } } -static int +static void mt7530_mac_config(struct dsa_switch *ds, int port, unsigned int mode, phy_interface_t interface) { @@ -2597,22 +2597,14 @@ mt7530_mac_config(struct dsa_switch *ds, int port, unsigned int mode, mt7530_setup_port5(priv->ds, interface); else if (port == 6) mt7530_setup_port6(priv->ds, interface); - - return 0; } -static int mt7531_rgmii_setup(struct mt7530_priv *priv, u32 port, - phy_interface_t interface, - struct phy_device *phydev) +static void mt7531_rgmii_setup(struct mt7530_priv *priv, u32 port, + phy_interface_t interface, + struct phy_device *phydev) { u32 val; - if (priv->p5_sgmii) { - dev_err(priv->dev, "RGMII mode is not available for port %d\n", - port); - return -EINVAL; - } - val = mt7530_read(priv, MT7531_CLKGEN_CTRL); val |= GP_CLK_EN; val &= ~GP_MODE_MASK; @@ -2640,20 +2632,14 @@ static int mt7531_rgmii_setup(struct mt7530_priv *priv, u32 port, case PHY_INTERFACE_MODE_RGMII_ID: break; default: - return -EINVAL; + break; } } - mt7530_write(priv, MT7531_CLKGEN_CTRL, val); - - return 0; -} -static bool mt753x_is_mac_port(u32 port) -{ - return (port == 5 || port == 6); + mt7530_write(priv, MT7531_CLKGEN_CTRL, val); } -static int +static void mt7531_mac_config(struct dsa_switch *ds, int port, unsigned int mode, phy_interface_t interface) { @@ -2661,42 +2647,21 @@ mt7531_mac_config(struct dsa_switch *ds, int port, unsigned int mode, struct phy_device *phydev; struct dsa_port *dp; - if (!mt753x_is_mac_port(port)) { - dev_err(priv->dev, "port %d is not a MAC port\n", port); - return -EINVAL; - } - - switch (interface) { - case PHY_INTERFACE_MODE_RGMII: - case PHY_INTERFACE_MODE_RGMII_ID: - case PHY_INTERFACE_MODE_RGMII_RXID: - case PHY_INTERFACE_MODE_RGMII_TXID: + if (phy_interface_mode_is_rgmii(interface)) { dp = dsa_to_port(ds, port); phydev = dp->user->phydev; - return mt7531_rgmii_setup(priv, port, interface, phydev); - case PHY_INTERFACE_MODE_SGMII: - case PHY_INTERFACE_MODE_NA: - case PHY_INTERFACE_MODE_1000BASEX: - case PHY_INTERFACE_MODE_2500BASEX: - /* handled in SGMII PCS driver */ - return 0; - default: - return -EINVAL; + mt7531_rgmii_setup(priv, port, interface, phydev); } - - return -EINVAL; } -static int +static void mt753x_mac_config(struct dsa_switch *ds, int port, unsigned int mode, const struct phylink_link_state *state) { struct mt7530_priv *priv = ds->priv; - if (!priv->info->mac_port_config) - return 0; - - return priv->info->mac_port_config(ds, port, mode, state->interface); + if (priv->info->mac_port_config) + priv->info->mac_port_config(ds, port, mode, state->interface); } static struct phylink_pcs * @@ -2725,17 +2690,11 @@ mt753x_phylink_mac_config(struct dsa_switch *ds, int port, unsigned int mode, u32 mcr_cur, mcr_new; switch (port) { - case 0 ... 4: - if (state->interface != PHY_INTERFACE_MODE_GMII && - state->interface != PHY_INTERFACE_MODE_INTERNAL) - goto unsupported; - break; case 5: if (priv->p5_interface == state->interface) break; - if (mt753x_mac_config(ds, port, mode, state) < 0) - goto unsupported; + mt753x_mac_config(ds, port, mode, state); if (priv->p5_intf_sel != P5_DISABLED) priv->p5_interface = state->interface; @@ -2744,16 +2703,10 @@ mt753x_phylink_mac_config(struct dsa_switch *ds, int port, unsigned int mode, if (priv->p6_interface == state->interface) break; - if (mt753x_mac_config(ds, port, mode, state) < 0) - goto unsupported; + mt753x_mac_config(ds, port, mode, state); priv->p6_interface = state->interface; break; - default: -unsupported: - dev_err(ds->dev, "%s: unsupported %s port: %i\n", - __func__, phy_modes(state->interface), port); - return; } mcr_cur = mt7530_read(priv, MT7530_PMCR_P(port)); @@ -2836,7 +2789,6 @@ mt7531_cpu_port_config(struct dsa_switch *ds, int port) struct mt7530_priv *priv = ds->priv; phy_interface_t interface; int speed; - int ret; switch (port) { case 5: @@ -2861,9 +2813,8 @@ mt7531_cpu_port_config(struct dsa_switch *ds, int port) else speed = SPEED_1000; - ret = mt7531_mac_config(ds, port, MLO_AN_FIXED, interface); - if (ret) - return ret; + mt7531_mac_config(ds, port, MLO_AN_FIXED, interface); + mt7530_write(priv, MT7530_PMCR_P(port), PMCR_CPU_PORT_SETTING(priv->id)); mt753x_phylink_mac_link_up(ds, port, MLO_AN_FIXED, interface, NULL, diff --git a/drivers/net/dsa/mt7530.h b/drivers/net/dsa/mt7530.h index 26a6d2160c08..b1665de7f640 100644 --- a/drivers/net/dsa/mt7530.h +++ b/drivers/net/dsa/mt7530.h @@ -730,9 +730,9 @@ struct mt753x_info { void (*mac_port_validate)(struct dsa_switch *ds, int port, phy_interface_t interface, unsigned long *supported); - int (*mac_port_config)(struct dsa_switch *ds, int port, - unsigned int mode, - phy_interface_t interface); + void (*mac_port_config)(struct dsa_switch *ds, int port, + unsigned int mode, + phy_interface_t interface); }; /* struct mt7530_priv - This is the main data structure for holding the state