Commit b097bea1 authored by Ansuel Smith's avatar Ansuel Smith Committed by David S. Miller
Browse files

net: mdio: ipq8064: add regmap config to disable REGCACHE



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: default avatarAnsuel Smith <ansuelsmth@gmail.com>
Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 94864069
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+24 −10
Original line number Diff line number Diff line
@@ -7,10 +7,9 @@

#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of_mdio.h>
#include <linux/phy.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>

@@ -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)