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From: Ansuel Smith <ansuelsmth@gmail.com>
To: Florian Fainelli <f.fainelli@gmail.com>
Cc: Ansuel Smith <ansuelsmth@gmail.com>, Andrew Lunn <andrew@lunn.ch>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	Russell King <linux@armlinux.org.uk>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	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	[thread overview]
Message-ID: <20210504222915.17206-2-ansuelsmth@gmail.com> (raw)
In-Reply-To: <20210504222915.17206-1-ansuelsmth@gmail.com>

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 <ansuelsmth@gmail.com>
---
 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 <linux/module.h>
 #include <linux/regmap.h>
 #include <linux/of_mdio.h>
-#include <linux/phy.h>
+#include <linux/of_address.h>
 #include <linux/platform_device.h>
-#include <linux/mfd/syscon.h>
 
 /* 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)
-- 
2.30.2


  reply	other threads:[~2021-05-04 22:29 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-04 22:28 [RFC PATCH net-next v3 01/20] net: mdio: ipq8064: clean whitespaces in define Ansuel Smith
2021-05-04 22:28 ` Ansuel Smith [this message]
2021-05-04 22:28 ` [RFC PATCH net-next v3 03/20] net: mdio: ipq8064: enlarge sleep after read/write operation Ansuel Smith
2021-05-04 22:28 ` [RFC PATCH net-next v3 04/20] net: dsa: qca8k: handle qca8k_set_page errors Ansuel Smith
2021-05-05  0:25   ` Andrew Lunn
2021-05-05  0:26     ` Andrew Lunn
2021-05-04 22:28 ` [RFC PATCH net-next v3 05/20] net: dsa: qca8k: handle error with qca8k_read operation Ansuel Smith
2021-05-05  0:36   ` Andrew Lunn
2021-05-05  0:44     ` Ansuel Smith
2021-05-04 22:29 ` [RFC PATCH net-next v3 06/20] net: dsa: qca8k: handle error with qca8k_write operation Ansuel Smith
2021-05-05  0:41   ` Andrew Lunn
2021-05-05  0:47     ` Ansuel Smith
2021-05-06 11:19       ` Vladimir Oltean
2021-05-04 22:29 ` [RFC PATCH net-next v3 07/20] net: dsa: qca8k: handle error with qca8k_rmw operation Ansuel Smith
2021-05-05  0:46   ` Andrew Lunn
2021-05-05  0:51     ` Ansuel Smith
2021-05-04 22:29 ` [RFC PATCH net-next v3 08/20] net: dsa: qca8k: add support for qca8327 switch Ansuel Smith
2021-05-05  0:48   ` Andrew Lunn
2021-05-06 11:20   ` Vladimir Oltean
2021-05-04 22:29 ` [RFC PATCH net-next v3 09/20] devicetree: net: dsa: qca8k: Document new compatible qca8327 Ansuel Smith
2021-05-05  0:48   ` Andrew Lunn
2021-05-06 21:07   ` Rob Herring
2021-05-04 22:29 ` [RFC PATCH net-next v3 10/20] net: dsa: qca8k: add priority tweak to qca8337 switch Ansuel Smith
2021-05-05  0:53   ` Andrew Lunn
2021-05-06 11:16   ` Vladimir Oltean
2021-05-04 22:29 ` [RFC PATCH net-next v3 11/20] net: dsa: qca8k: add GLOBAL_FC settings needed for qca8327 Ansuel Smith
2021-05-05  0:54   ` Andrew Lunn
2021-05-04 22:29 ` [RFC PATCH net-next v3 12/20] net: dsa: qca8k: add support for switch rev Ansuel Smith
2021-05-04 22:29 ` [RFC PATCH net-next v3 13/20] net: dsa: qca8k: make rgmii delay configurable Ansuel Smith
2021-05-05  1:00   ` Andrew Lunn
2021-05-05  1:07     ` Ansuel Smith
2021-05-06 11:10   ` Vladimir Oltean
2021-05-06 21:53     ` Ansuel Smith
2021-05-07  8:51       ` Vladimir Oltean
2021-05-04 22:29 ` [RFC PATCH net-next v3 14/20] net: dsa: qca8k: clear MASTER_EN after phy read/write Ansuel Smith
2021-05-04 22:29 ` [RFC PATCH net-next v3 15/20] net: dsa: qca8k: dsa: qca8k: protect MASTER busy_wait with mdio mutex Ansuel Smith
2021-05-05  1:04   ` Andrew Lunn
2021-05-04 22:29 ` [RFC PATCH net-next v3 16/20] net: dsa: qca8k: enlarge mdio delay and timeout Ansuel Smith
2021-05-06 11:27   ` Vladimir Oltean
2021-05-04 22:29 ` [RFC PATCH net-next v3 17/20] net: phy: phylink: permit to pass dev_flags to phylink_connect_phy Ansuel Smith
2021-05-04 22:33   ` Florian Fainelli
2021-05-05  0:35     ` Ansuel Smith
2021-05-04 22:29 ` [RFC PATCH net-next v3 18/20] net: dsa: slave: pass dev_flags also to internal PHY Ansuel Smith
2021-05-04 22:29 ` [RFC PATCH net-next v3 19/20] net: dsa: qca8k: pass switch_revision info to phy dev_flags Ansuel Smith
2021-05-06 11:24   ` Vladimir Oltean
2021-05-07 23:26     ` Ansuel Smith
2021-05-07 23:33       ` Russell King - ARM Linux admin
2021-05-07 23:51         ` Ansuel Smith
2021-05-08 17:31           ` Andrew Lunn
2021-05-08 18:26         ` Vladimir Oltean
2021-05-08 19:39           ` Russell King - ARM Linux admin
2021-05-08 20:55             ` Andrew Lunn
2021-05-07  9:44   ` Russell King - ARM Linux admin
2021-05-04 22:29 ` [RFC PATCH net-next v3 20/20] net: phy: add qca8k driver for qca8k switch internal PHY Ansuel Smith
2021-05-05  1:11   ` Andrew Lunn
2021-05-05  1:17     ` Ansuel Smith
2021-05-05 12:06       ` Andrew Lunn
2021-05-05  0:17 ` [RFC PATCH net-next v3 01/20] net: mdio: ipq8064: clean whitespaces in define Andrew Lunn

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