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Commit 2e12f536 authored by Romain Perier's avatar Romain Perier Committed by David S. Miller
Browse files

net: stmmac: dwmac-rk: Use standard devicetree property for phy regulator 



Currently, dwmac-rk uses a custom propety "phy_regulator" to get the name of the
right regulator to use to power on or power off the phy. This commit converts the
driver to use phy-supply devicetree property and the corresponding API, it cleans
the code a bit and make it simpler to maintain. This also replaces the property
phy_regulator by the standard property phy-supply in rk3288-evb-rk808.dts.

Signed-off-by: default avatarRomain Perier <romain.perier@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 68c3a884

arch/arm/boot/dts/rk3288-evb-rk808.dts

+1 −1
Original line number Diff line number Diff line
@@ -161,7 +161,7 @@ 
};



&gmac {

	phy_regulator = "vcc_phy";

	phy-supply = <&vcc_phy>;

	phy-mode = "rgmii";

	clock_in_out = "input";

	snps,reset-gpio = <&gpio4 7 0>;

drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c

+21 −42
Original line number Diff line number Diff line
@@ -32,7 +32,7 @@ 
struct rk_priv_data {

	struct platform_device *pdev;

	int phy_iface;

	char regulator[32];

	struct regulator *regulator;



	bool clk_enabled;

	bool clock_input;
@@ -287,46 +287,25 @@ static int gmac_clk_enable(struct rk_priv_data *bsp_priv, bool enable) 


static int phy_power_on(struct rk_priv_data *bsp_priv, bool enable)

{

	struct regulator *ldo;

	char *ldostr = bsp_priv->regulator;

	struct regulator *ldo = bsp_priv->regulator;

	int ret;

	struct device *dev = &bsp_priv->pdev->dev;



	if (!ldostr) {

		dev_err(dev, "%s: no ldo found\n", __func__);

	if (!ldo) {

		dev_err(dev, "%s: no regulator found\n", __func__);

		return -1;

	}



	ldo = regulator_get(NULL, ldostr);

	if (!ldo) {

		dev_err(dev, "\n%s get ldo %s failed\n", __func__, ldostr);

	} else {

	if (enable) {

			if (!regulator_is_enabled(ldo)) {

		ret = regulator_enable(ldo);

				if (ret != 0)

					dev_err(dev, "%s: fail to enable %s\n",

						__func__, ldostr);

				else

					dev_info(dev, "turn on ldo done.\n");

			} else {

				dev_warn(dev, "%s is enabled before enable",

					 ldostr);

			}

		if (ret)

			dev_err(dev, "%s: fail to enable phy-supply\n",

				__func__);

	} else {

			if (regulator_is_enabled(ldo)) {

		ret = regulator_disable(ldo);

				if (ret != 0)

					dev_err(dev, "%s: fail to disable %s\n",

						__func__, ldostr);

				else

					dev_info(dev, "turn off ldo done.\n");

			} else {

				dev_warn(dev, "%s is disabled before disable",

					 ldostr);

			}

		}

		regulator_put(ldo);

		if (ret)

			dev_err(dev, "%s: fail to disable phy-supply\n",

				__func__);

	}



	return 0;
@@ -346,14 +325,14 @@ static void *rk_gmac_setup(struct platform_device *pdev) 


	bsp_priv->phy_iface = of_get_phy_mode(dev->of_node);



	ret = of_property_read_string(dev->of_node, "phy_regulator", &strings);

	if (ret) {

		dev_warn(dev, "%s: Can not read property: phy_regulator.\n",

			 __func__);

	} else {

		dev_info(dev, "%s: PHY power controlled by regulator(%s).\n",

			 __func__, strings);

		strcpy(bsp_priv->regulator, strings);

	bsp_priv->regulator = devm_regulator_get_optional(dev, "phy");

	if (IS_ERR(bsp_priv->regulator)) {

		if (PTR_ERR(bsp_priv->regulator) == -EPROBE_DEFER) {

			dev_err(dev, "phy regulator is not available yet, deferred probing\n");

			return ERR_PTR(-EPROBE_DEFER);

		}

		dev_err(dev, "no regulator found\n");

		bsp_priv->regulator = NULL;

	}



	ret = of_property_read_string(dev->of_node, "clock_in_out", &strings);