From mboxrd@z Thu Jan 1 00:00:00 1970 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 DC8B42F24 for ; Wed, 12 Apr 2023 08:40:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 62DE4C433EF; Wed, 12 Apr 2023 08:40:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1681288802; bh=lF9XBFsTzjKeyLPIHoB8C8mkasUVZRgzvwLpqJMzskE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JOFfzIpSy6HbgwHbm9RZpeDRVhH6FTdvwdLoBbBfV57goKwF1oMv3DRNj4bs6zJRn +YDON66aDpk3AEk0PVMyWI9Jv+0HZr8++Slmhgd4ksymFN5NcSAwvXKaB5IOeuM2KN omPwCX0vYwqfLPjpq8indIBHeWpYJYOXoC8NO76w= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, "Russell King (Oracle)" , Michael Sit Wei Hong , "David S. Miller" , Sasha Levin Subject: [PATCH 6.1 023/164] net: phylink: add phylink_expects_phy() method Date: Wed, 12 Apr 2023 10:32:25 +0200 Message-Id: <20230412082837.889883792@linuxfoundation.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230412082836.695875037@linuxfoundation.org> References: <20230412082836.695875037@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Michael Sit Wei Hong [ Upstream commit 653a180957a85c3fc30320cc7e84f5dc913a64f8 ] Provide phylink_expects_phy() to allow MAC drivers to check if it is expecting a PHY to attach to. Since fixed-linked setups do not need to attach to a PHY. Provides a boolean value as to if the MAC should expect a PHY. Returns true if a PHY is expected. Reviewed-by: Russell King (Oracle) Signed-off-by: Michael Sit Wei Hong Signed-off-by: David S. Miller Stable-dep-of: fe2cfbc96803 ("net: stmmac: check if MAC needs to attach to a PHY") Signed-off-by: Sasha Levin --- drivers/net/phy/phylink.c | 19 +++++++++++++++++++ include/linux/phylink.h | 1 + 2 files changed, 20 insertions(+) diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c index a202ce6611fde..4073e8243df3f 100644 --- a/drivers/net/phy/phylink.c +++ b/drivers/net/phy/phylink.c @@ -1552,6 +1552,25 @@ void phylink_destroy(struct phylink *pl) } EXPORT_SYMBOL_GPL(phylink_destroy); +/** + * phylink_expects_phy() - Determine if phylink expects a phy to be attached + * @pl: a pointer to a &struct phylink returned from phylink_create() + * + * When using fixed-link mode, or in-band mode with 1000base-X or 2500base-X, + * no PHY is needed. + * + * Returns true if phylink will be expecting a PHY. + */ +bool phylink_expects_phy(struct phylink *pl) +{ + if (pl->cfg_link_an_mode == MLO_AN_FIXED || + (pl->cfg_link_an_mode == MLO_AN_INBAND && + phy_interface_mode_is_8023z(pl->link_config.interface))) + return false; + return true; +} +EXPORT_SYMBOL_GPL(phylink_expects_phy); + static void phylink_phy_change(struct phy_device *phydev, bool up) { struct phylink *pl = phydev->phylink; diff --git a/include/linux/phylink.h b/include/linux/phylink.h index 3f01ac8017e06..6d62c9ea2e040 100644 --- a/include/linux/phylink.h +++ b/include/linux/phylink.h @@ -566,6 +566,7 @@ struct phylink *phylink_create(struct phylink_config *, struct fwnode_handle *, phy_interface_t iface, const struct phylink_mac_ops *mac_ops); void phylink_destroy(struct phylink *); +bool phylink_expects_phy(struct phylink *pl); int phylink_connect_phy(struct phylink *, struct phy_device *); int phylink_of_phy_connect(struct phylink *, struct device_node *, u32 flags); -- 2.39.2