[PATCH 2/2] net: fec_imx: add regulator support

[Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>]

at least imx28-evk need it to work with devicetree

Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
---
 drivers/net/fec_imx.c | 20 ++++++++++++++++++++
 drivers/net/fec_imx.h |  1 +
 2 files changed, 21 insertions(+)

diff --git a/drivers/net/fec_imx.c b/drivers/net/fec_imx.c
index 38a29fc83e..10422d2e2d 100644
--- a/drivers/net/fec_imx.c
+++ b/drivers/net/fec_imx.c
@@ -19,6 +19,7 @@
 #include <linux/err.h>
 #include <of_net.h>
 #include <of_gpio.h>
+#include <regulator.h>
 #include <gpio.h>
 #include <linux/iopoll.h>
 
@@ -776,6 +777,22 @@ static int fec_probe(struct device_d *dev)
 	}
 	fec->regs = IOMEM(iores->start);
 
+	fec->reg_phy = regulator_get(dev, "phy");
+	if (!IS_ERR(fec->reg_phy)) {
+		ret = regulator_enable(fec->reg_phy);
+		if (ret) {
+			dev_err(dev,
+				"Failed to enable phy regulator: %d\n", ret);
+			goto disable_clk;
+		}
+	} else {
+		if (PTR_ERR(fec->reg_phy) == -EPROBE_DEFER) {
+			ret = -EPROBE_DEFER;
+			goto disable_clk;
+		}
+		fec->reg_phy = NULL;
+	}
+
 	phy_reset = of_get_named_gpio(dev->device_node, "phy-reset-gpios", 0);
 	if (gpio_is_valid(phy_reset)) {
 		of_property_read_u32(dev->device_node, "phy-reset-duration", &msec);
@@ -868,6 +885,9 @@ free_gpio:
 	if (gpio_is_valid(phy_reset))
 		gpio_free(phy_reset);
 release_res:
+	if (fec->reg_phy)
+		regulator_disable(fec->reg_phy);
+
 	release_region(iores);
 disable_clk:
 	fec_clk_disable(fec);
diff --git a/drivers/net/fec_imx.h b/drivers/net/fec_imx.h
index 1a1fbc9872..d1ac92f0e3 100644
--- a/drivers/net/fec_imx.h
+++ b/drivers/net/fec_imx.h
@@ -152,6 +152,7 @@ struct fec_priv {
 	struct clk *clk[FEC_CLK_NUM];
 	struct clk *opt_clk[FEC_OPT_CLK_NUM];
 	enum fec_type type;
+	struct regulator *reg_phy;
 };
 
 static inline int fec_is_imx27(struct fec_priv *priv)
-- 
2.20.1


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