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[93.35.189.2]) by smtp.googlemail.com with ESMTPSA id q12sm2052946ejy.91.2021.05.04.15.29.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 May 2021 15:29:27 -0700 (PDT) From: Ansuel Smith To: Florian Fainelli Cc: Ansuel Smith , Andrew Lunn , Heiner Kallweit , Russell King , "David S. Miller" , Jakub Kicinski , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH net-next v3 02/20] net: mdio: ipq8064: add regmap config to disable REGCACHE Date: Wed, 5 May 2021 00:28:56 +0200 Message-Id: <20210504222915.17206-2-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210504222915.17206-1-ansuelsmth@gmail.com> References: <20210504222915.17206-1-ansuelsmth@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC mdio drivers should not use REGCHACHE. Also disable locking since it's handled by the mdio users and regmap is always accessed atomically. Signed-off-by: Ansuel Smith --- drivers/net/mdio/mdio-ipq8064.c | 34 +++++++++++++++++++++++---------- 1 file changed, 24 insertions(+), 10 deletions(-) diff --git a/drivers/net/mdio/mdio-ipq8064.c b/drivers/net/mdio/mdio-ipq8064.c index fb1614242e13..9862745d1cee 100644 --- a/drivers/net/mdio/mdio-ipq8064.c +++ b/drivers/net/mdio/mdio-ipq8064.c @@ -10,9 +10,8 @@ #include #include #include -#include +#include #include -#include /* MII address register definitions */ #define MII_ADDR_REG_ADDR 0x10 @@ -97,14 +96,34 @@ ipq8064_mdio_write(struct mii_bus *bus, int phy_addr, int reg_offset, u16 data) return ipq8064_mdio_wait_busy(priv); } +static const struct regmap_config ipq8064_mdio_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .can_multi_write = false, + /* the mdio lock is used by any user of this mdio driver */ + .disable_locking = true, + + .cache_type = REGCACHE_NONE, +}; + static int ipq8064_mdio_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct ipq8064_mdio *priv; + struct resource res; struct mii_bus *bus; + void __iomem *base; int ret; + if (of_address_to_resource(np, 0, &res)) + return -ENOMEM; + + base = ioremap(res.start, resource_size(&res)); + if (!base) + return -ENOMEM; + bus = devm_mdiobus_alloc_size(&pdev->dev, sizeof(*priv)); if (!bus) return -ENOMEM; @@ -116,15 +135,10 @@ ipq8064_mdio_probe(struct platform_device *pdev) bus->parent = &pdev->dev; priv = bus->priv; - priv->base = device_node_to_regmap(np); - if (IS_ERR(priv->base)) { - if (priv->base == ERR_PTR(-EPROBE_DEFER)) - return -EPROBE_DEFER; - - dev_err(&pdev->dev, "error getting device regmap, error=%pe\n", - priv->base); + priv->base = devm_regmap_init_mmio(&pdev->dev, base, + &ipq8064_mdio_regmap_config); + if (IS_ERR(priv->base)) return PTR_ERR(priv->base); - } ret = of_mdiobus_register(bus, np); if (ret)