Merge tag 'for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-next

Kishon writes:

New Features
============
*) Add driver for USB PHYs on sun9i
*) Add driver for USB PHY on dm816x
*) Modified exynos5-usbdrd driver to add support for Exynos5433 SoC

Fixes
=====
*) Fix power_on/power_off failure paths in some drivers
*) Make miphy365x use generic PHY type constants
*) Fix build errors due to missing export symbols in qcom-ufs driver
*) Make all the functions return proper error values

Cleanups
========
*) use PTR_ERR_OR_ZERO to simplify code
*) use devm_kcalloc instead of devm_kzalloc with multiply
*) remove un-necessary ifdef CONFIG_OF

18 files changed, 580 insertions, 89 deletions

diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 2962de2..a53bd5b 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -35,6 +35,13 @@ config ARMADA375_USBCLUSTER_PHY
 	depends on OF
 	select GENERIC_PHY
 
+config PHY_DM816X_USB
+	tristate "TI dm816x USB PHY driver"
+	depends on ARCH_OMAP2PLUS
+	select GENERIC_PHY
+	help
+	  Enable this for dm816x USB to work.
+
 config PHY_EXYNOS_MIPI_VIDEO
 	tristate "S5P/EXYNOS SoC series MIPI CSI-2/DSI PHY driver"
 	depends on HAS_IOMEM
@@ -174,6 +181,17 @@ config PHY_SUN4I_USB
 	  This driver controls the entire USB PHY block, both the USB OTG
 	  parts, as well as the 2 regular USB 2 host PHYs.
 
+config PHY_SUN9I_USB
+	tristate "Allwinner sun9i SoC USB PHY driver"
+	depends on ARCH_SUNXI && HAS_IOMEM && OF
+	depends on RESET_CONTROLLER
+	select GENERIC_PHY
+	help
+	  Enable this to support the transceiver that is part of Allwinner
+	  sun9i SoCs.
+
+	  This driver controls each individual USB 2 host PHY.
+
 config PHY_SAMSUNG_USB2
 	tristate "Samsung USB 2.0 PHY driver"
 	depends on HAS_IOMEM
diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index f080e1b..f126251 100644
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -5,6 +5,7 @@
 obj-$(CONFIG_GENERIC_PHY)		+= phy-core.o
 obj-$(CONFIG_PHY_BERLIN_USB)		+= phy-berlin-usb.o
 obj-$(CONFIG_PHY_BERLIN_SATA)		+= phy-berlin-sata.o
+obj-$(CONFIG_PHY_DM816X_USB)		+= phy-dm816x-usb.o
 obj-$(CONFIG_ARMADA375_USBCLUSTER_PHY)	+= phy-armada375-usb2.o
 obj-$(CONFIG_BCM_KONA_USB2_PHY)		+= phy-bcm-kona-usb2.o
 obj-$(CONFIG_PHY_EXYNOS_DP_VIDEO)	+= phy-exynos-dp-video.o
@@ -20,6 +21,7 @@ obj-$(CONFIG_TWL4030_USB)		+= phy-twl4030-usb.o
 obj-$(CONFIG_PHY_EXYNOS5250_SATA)	+= phy-exynos5250-sata.o
 obj-$(CONFIG_PHY_HIX5HD2_SATA)		+= phy-hix5hd2-sata.o
 obj-$(CONFIG_PHY_SUN4I_USB)		+= phy-sun4i-usb.o
+obj-$(CONFIG_PHY_SUN9I_USB)		+= phy-sun9i-usb.o
 obj-$(CONFIG_PHY_SAMSUNG_USB2)		+= phy-exynos-usb2.o
 phy-exynos-usb2-y			+= phy-samsung-usb2.o
 phy-exynos-usb2-$(CONFIG_PHY_EXYNOS4210_USB2)	+= phy-exynos4210-usb2.o
diff --git a/drivers/phy/phy-berlin-sata.c b/drivers/phy/phy-berlin-sata.c
index 099eee8..6f3e06d 100644
--- a/drivers/phy/phy-berlin-sata.c
+++ b/drivers/phy/phy-berlin-sata.c
@@ -218,7 +218,7 @@ static int phy_berlin_sata_probe(struct platform_device *pdev)
 	if (priv->nphys == 0)
 		return -ENODEV;
 
-	priv->phys = devm_kzalloc(dev, priv->nphys * sizeof(*priv->phys),
+	priv->phys = devm_kcalloc(dev, priv->nphys, sizeof(*priv->phys),
 				  GFP_KERNEL);
 	if (!priv->phys)
 		return -ENOMEM;
diff --git a/drivers/phy/phy-berlin-usb.c b/drivers/phy/phy-berlin-usb.c
index c8a8d53..c6fc95b 100644
--- a/drivers/phy/phy-berlin-usb.c
+++ b/drivers/phy/phy-berlin-usb.c
@@ -103,9 +103,6 @@
 #define MODE_TEST_EN		BIT(11)
 #define ANA_TEST_DC_CTRL(x)	((x) << 12)
 
-#define to_phy_berlin_usb_priv(p)	\
-	container_of((p), struct phy_berlin_usb_priv, phy)
-
 static const u32 phy_berlin_pll_dividers[] = {
 	/* Berlin 2 */
 	CLK_REF_DIV(0xc) | FEEDBACK_CLK_DIV(0x54),
@@ -115,14 +112,13 @@ static const u32 phy_berlin_pll_dividers[] = {
 
 struct phy_berlin_usb_priv {
 	void __iomem		*base;
-	struct phy		*phy;
 	struct reset_control	*rst_ctrl;
 	u32			pll_divider;
 };
 
 static int phy_berlin_usb_power_on(struct phy *phy)
 {
-	struct phy_berlin_usb_priv *priv = dev_get_drvdata(phy->dev.parent);
+	struct phy_berlin_usb_priv *priv = phy_get_drvdata(phy);
 
 	reset_control_reset(priv->rst_ctrl);
 
@@ -175,6 +171,7 @@ static int phy_berlin_usb_probe(struct platform_device *pdev)
 		of_match_device(phy_berlin_sata_of_match, &pdev->dev);
 	struct phy_berlin_usb_priv *priv;
 	struct resource *res;
+	struct phy *phy;
 	struct phy_provider *phy_provider;
 
 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
@@ -192,20 +189,18 @@ static int phy_berlin_usb_probe(struct platform_device *pdev)
 
 	priv->pll_divider = *((u32 *)match->data);
 
-	priv->phy = devm_phy_create(&pdev->dev, NULL, &phy_berlin_usb_ops);
-	if (IS_ERR(priv->phy)) {
+	phy = devm_phy_create(&pdev->dev, NULL, &phy_berlin_usb_ops);
+	if (IS_ERR(phy)) {
 		dev_err(&pdev->dev, "failed to create PHY\n");
-		return PTR_ERR(priv->phy);
+		return PTR_ERR(phy);
 	}
 
 	platform_set_drvdata(pdev, priv);
+	phy_set_drvdata(phy, priv);
 
 	phy_provider =
 		devm_of_phy_provider_register(&pdev->dev, of_phy_simple_xlate);
-	if (IS_ERR(phy_provider))
-		return PTR_ERR(phy_provider);
-
-	return 0;
+	return PTR_ERR_OR_ZERO(phy_provider);
 }
 
 static struct platform_driver phy_berlin_usb_driver = {
diff --git a/drivers/phy/phy-dm816x-usb.c b/drivers/phy/phy-dm816x-usb.c
new file mode 100644
index 0000000..7b42555
--- /dev/null
+++ b/drivers/phy/phy-dm816x-usb.c
@@ -0,0 +1,290 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/io.h>
+#include <linux/usb/phy_companion.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/pm_runtime.h>
+#include <linux/delay.h>
+#include <linux/phy/phy.h>
+#include <linux/of_platform.h>
+
+#include <linux/mfd/syscon.h>
+
+/*
+ * TRM has two sets of USB_CTRL registers.. The correct register bits
+ * are in TRM section 24.9.8.2 USB_CTRL Register. The TRM documents the
+ * phy as being SR70LX Synopsys USB 2.0 OTG nanoPHY. It also seems at
+ * least dm816x rev c ignores writes to USB_CTRL register, but the TI
+ * kernel is writing to those so it's possible that later revisions
+ * have worknig USB_CTRL register.
+ *
+ * Also note that At least USB_CTRL register seems to be dm816x specific
+ * according to the TRM. It's possible that USBPHY_CTRL is more generic,
+ * but that would have to be checked against the SR70LX documentation
+ * which does not seem to be publicly available.
+ *
+ * Finally, the phy on dm814x and am335x is different from dm816x.
+ */
+#define DM816X_USB_CTRL_PHYCLKSRC	BIT(8)	/* 1 = PLL ref clock */
+#define DM816X_USB_CTRL_PHYSLEEP1	BIT(1)	/* Enable the first phy */
+#define DM816X_USB_CTRL_PHYSLEEP0	BIT(0)	/* Enable the second phy */
+
+#define DM816X_USBPHY_CTRL_TXRISETUNE	1
+#define DM816X_USBPHY_CTRL_TXVREFTUNE	0xc
+#define DM816X_USBPHY_CTRL_TXPREEMTUNE	0x2
+
+struct dm816x_usb_phy {
+	struct regmap *syscon;
+	struct device *dev;
+	unsigned int instance;
+	struct clk *refclk;
+	struct usb_phy phy;
+	unsigned int usb_ctrl;		/* Shared between phy0 and phy1 */
+	unsigned int usbphy_ctrl;
+};
+
+static int dm816x_usb_phy_set_host(struct usb_otg *otg, struct usb_bus *host)
+{
+	otg->host = host;
+	if (!host)
+		otg->state = OTG_STATE_UNDEFINED;
+
+	return 0;
+}
+
+static int dm816x_usb_phy_set_peripheral(struct usb_otg *otg,
+					 struct usb_gadget *gadget)
+{
+	otg->gadget = gadget;
+	if (!gadget)
+		otg->state = OTG_STATE_UNDEFINED;
+
+	return 0;
+}
+
+static int dm816x_usb_phy_init(struct phy *x)
+{
+	struct dm816x_usb_phy *phy = phy_get_drvdata(x);
+	unsigned int val;
+	int error;
+
+	if (clk_get_rate(phy->refclk) != 24000000)
+		dev_warn(phy->dev, "nonstandard phy refclk\n");
+
+	/* Set PLL ref clock and put phys to sleep */
+	error = regmap_update_bits(phy->syscon, phy->usb_ctrl,
+				   DM816X_USB_CTRL_PHYCLKSRC |
+				   DM816X_USB_CTRL_PHYSLEEP1 |
+				   DM816X_USB_CTRL_PHYSLEEP0,
+				   0);
+	regmap_read(phy->syscon, phy->usb_ctrl, &val);
+	if ((val & 3) != 0)
+		dev_info(phy->dev,
+			 "Working dm816x USB_CTRL! (0x%08x)\n",
+			 val);
+
+	/*
+	 * TI kernel sets these values for "symmetrical eye diagram and
+	 * better signal quality" so let's assume somebody checked the
+	 * values with a scope and set them here too.
+	 */
+	regmap_read(phy->syscon, phy->usbphy_ctrl, &val);
+	val |= DM816X_USBPHY_CTRL_TXRISETUNE |
+		DM816X_USBPHY_CTRL_TXVREFTUNE |
+		DM816X_USBPHY_CTRL_TXPREEMTUNE;
+	regmap_write(phy->syscon, phy->usbphy_ctrl, val);
+
+	return 0;
+}
+
+static struct phy_ops ops = {
+	.init		= dm816x_usb_phy_init,
+	.owner		= THIS_MODULE,
+};
+
+static int dm816x_usb_phy_runtime_suspend(struct device *dev)
+{
+	struct dm816x_usb_phy *phy = dev_get_drvdata(dev);
+	unsigned int mask, val;
+	int error = 0;
+
+	mask = BIT(phy->instance);
+	val = ~BIT(phy->instance);
+	error = regmap_update_bits(phy->syscon, phy->usb_ctrl,
+				   mask, val);
+	if (error)
+		dev_err(phy->dev, "phy%i failed to power off\n",
+			phy->instance);
+	clk_disable(phy->refclk);
+
+	return 0;
+}
+
+static int dm816x_usb_phy_runtime_resume(struct device *dev)
+{
+	struct dm816x_usb_phy *phy = dev_get_drvdata(dev);
+	unsigned int mask, val;
+	int error;
+
+	error = clk_enable(phy->refclk);
+	if (error)
+		return error;
+
+	/*
+	 * Note that at least dm816x rev c does not seem to do
+	 * anything with the USB_CTRL register. But let's follow
+	 * what the TI tree is doing in case later revisions use
+	 * USB_CTRL.
+	 */
+	mask = BIT(phy->instance);
+	val = BIT(phy->instance);
+	error = regmap_update_bits(phy->syscon, phy->usb_ctrl,
+				   mask, val);
+	if (error) {
+		dev_err(phy->dev, "phy%i failed to power on\n",
+			phy->instance);
+		clk_disable(phy->refclk);
+		return error;
+	}
+
+	return 0;
+}
+
+static UNIVERSAL_DEV_PM_OPS(dm816x_usb_phy_pm_ops,
+			    dm816x_usb_phy_runtime_suspend,
+			    dm816x_usb_phy_runtime_resume,
+			    NULL);
+
+#ifdef CONFIG_OF
+static const struct of_device_id dm816x_usb_phy_id_table[] = {
+	{
+		.compatible = "ti,dm8168-usb-phy",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, dm816x_usb_phy_id_table);
+#endif
+
+static int dm816x_usb_phy_probe(struct platform_device *pdev)
+{
+	struct dm816x_usb_phy *phy;
+	struct resource *res;
+	struct phy *generic_phy;
+	struct phy_provider *phy_provider;
+	struct usb_otg *otg;
+	const struct of_device_id *of_id;
+	const struct usb_phy_data *phy_data;
+	int error;
+
+	of_id = of_match_device(of_match_ptr(dm816x_usb_phy_id_table),
+				&pdev->dev);
+	if (!of_id)
+		return -EINVAL;
+
+	phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL);
+	if (!phy)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -ENOENT;
+
+	phy->syscon = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
+						      "syscon");
+	if (IS_ERR(phy->syscon))
+		return PTR_ERR(phy->syscon);
+
+	/*
+	 * According to sprs614e.pdf, the first usb_ctrl is shared and
+	 * the second instance for usb_ctrl is reserved.. Also the
+	 * register bits are different from earlier TRMs.
+	 */
+	phy->usb_ctrl = 0x20;
+	phy->usbphy_ctrl = (res->start & 0xff) + 4;
+	if (phy->usbphy_ctrl == 0x2c)
+		phy->instance = 1;
+
+	phy_data = of_id->data;
+
+	otg = devm_kzalloc(&pdev->dev, sizeof(*otg), GFP_KERNEL);
+	if (!otg)
+		return -ENOMEM;
+
+	phy->dev = &pdev->dev;
+	phy->phy.dev = phy->dev;
+	phy->phy.label = "dm8168_usb_phy";
+	phy->phy.otg = otg;
+	phy->phy.type = USB_PHY_TYPE_USB2;
+	otg->set_host = dm816x_usb_phy_set_host;
+	otg->set_peripheral = dm816x_usb_phy_set_peripheral;
+	otg->usb_phy = &phy->phy;
+
+	platform_set_drvdata(pdev, phy);
+
+	phy->refclk = devm_clk_get(phy->dev, "refclk");
+	if (IS_ERR(phy->refclk))
+		return PTR_ERR(phy->refclk);
+	error = clk_prepare(phy->refclk);
+	if (error)
+		return error;
+
+	pm_runtime_enable(phy->dev);
+	generic_phy = devm_phy_create(phy->dev, NULL, &ops);
+	if (IS_ERR(generic_phy))
+		return PTR_ERR(generic_phy);
+
+	phy_set_drvdata(generic_phy, phy);
+
+	phy_provider = devm_of_phy_provider_register(phy->dev,
+						     of_phy_simple_xlate);
+	if (IS_ERR(phy_provider))
+		return PTR_ERR(phy_provider);
+
+	usb_add_phy_dev(&phy->phy);
+
+	return 0;
+}
+
+static int dm816x_usb_phy_remove(struct platform_device *pdev)
+{
+	struct dm816x_usb_phy *phy = platform_get_drvdata(pdev);
+
+	usb_remove_phy(&phy->phy);
+	pm_runtime_disable(phy->dev);
+	clk_unprepare(phy->refclk);
+
+	return 0;
+}
+
+static struct platform_driver dm816x_usb_phy_driver = {
+	.probe		= dm816x_usb_phy_probe,
+	.remove		= dm816x_usb_phy_remove,
+	.driver		= {
+		.name	= "dm816x-usb-phy",
+		.pm	= &dm816x_usb_phy_pm_ops,
+		.of_match_table = of_match_ptr(dm816x_usb_phy_id_table),
+	},
+};
+
+module_platform_driver(dm816x_usb_phy_driver);
+
+MODULE_ALIAS("platform:dm816x_usb");
+MODULE_AUTHOR("Tony Lindgren <tony@atomide.com>");
+MODULE_DESCRIPTION("dm816x usb phy driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/phy/phy-exynos5-usbdrd.c b/drivers/phy/phy-exynos5-usbdrd.c
index e2a0be7..d72ef15 100644
--- a/drivers/phy/phy-exynos5-usbdrd.c
+++ b/drivers/phy/phy-exynos5-usbdrd.c
@@ -624,6 +624,13 @@ static const struct exynos5_usbdrd_phy_drvdata exynos5250_usbdrd_phy = {
 	.has_common_clk_gate	= true,
 };
 
+static const struct exynos5_usbdrd_phy_drvdata exynos5433_usbdrd_phy = {
+	.phy_cfg		= phy_cfg_exynos5,
+	.pmu_offset_usbdrd0_phy	= EXYNOS5_USBDRD_PHY_CONTROL,
+	.pmu_offset_usbdrd1_phy	= EXYNOS5433_USBHOST30_PHY_CONTROL,
+	.has_common_clk_gate	= false,
+};
+
 static const struct exynos5_usbdrd_phy_drvdata exynos7_usbdrd_phy = {
 	.phy_cfg		= phy_cfg_exynos5,
 	.pmu_offset_usbdrd0_phy	= EXYNOS5_USBDRD_PHY_CONTROL,
@@ -638,6 +645,9 @@ static const struct of_device_id exynos5_usbdrd_phy_of_match[] = {
 		.compatible = "samsung,exynos5420-usbdrd-phy",
 		.data = &exynos5420_usbdrd_phy
 	}, {
+		.compatible = "samsung,exynos5433-usbdrd-phy",
+		.data = &exynos5433_usbdrd_phy
+	}, {
 		.compatible = "samsung,exynos7-usbdrd-phy",
 		.data = &exynos7_usbdrd_phy
 	},
diff --git a/drivers/phy/phy-miphy28lp.c b/drivers/phy/phy-miphy28lp.c
index 9334352..c4cc11d 100644
--- a/drivers/phy/phy-miphy28lp.c
+++ b/drivers/phy/phy-miphy28lp.c
@@ -1259,10 +1259,7 @@ static int miphy28lp_probe(struct platform_device *pdev)
 	}
 
 	provider = devm_of_phy_provider_register(&pdev->dev, miphy28lp_xlate);
-	if (IS_ERR(provider))
-		return PTR_ERR(provider);
-
-	return 0;
+	return PTR_ERR_OR_ZERO(provider);
 }
 
 static const struct of_device_id miphy28lp_of_match[] = {
diff --git a/drivers/phy/phy-miphy365x.c b/drivers/phy/phy-miphy365x.c
index 51b459d..019c2d7 100644
--- a/drivers/phy/phy-miphy365x.c
+++ b/drivers/phy/phy-miphy365x.c
@@ -25,7 +25,7 @@
 #include <linux/mfd/syscon.h>
 #include <linux/regmap.h>
 
-#include <dt-bindings/phy/phy-miphy365x.h>
+#include <dt-bindings/phy/phy.h>
 
 #define HFC_TIMEOUT		100
 
@@ -177,7 +177,7 @@ static u8 rx_tx_spd[] = {
 static int miphy365x_set_path(struct miphy365x_phy *miphy_phy,
 			      struct miphy365x_dev *miphy_dev)
 {
-	bool sata = (miphy_phy->type == MIPHY_TYPE_SATA);
+	bool sata = (miphy_phy->type == PHY_TYPE_SATA);
 
 	return regmap_update_bits(miphy_dev->regmap,
 				  miphy_phy->ctrlreg,
@@ -431,7 +431,7 @@ static int miphy365x_init(struct phy *phy)
 	}
 
 	/* Initialise Miphy for PCIe or SATA */
-	if (miphy_phy->type == MIPHY_TYPE_PCIE)
+	if (miphy_phy->type == PHY_TYPE_PCIE)
 		ret = miphy365x_init_pcie_port(miphy_phy, miphy_dev);
 	else
 		ret = miphy365x_init_sata_port(miphy_phy, miphy_dev);
@@ -455,8 +455,8 @@ int miphy365x_get_addr(struct device *dev, struct miphy365x_phy *miphy_phy,
 		return ret;
 	}
 
-	if (!((!strncmp(name, "sata", 4) && type == MIPHY_TYPE_SATA) ||
-	      (!strncmp(name, "pcie", 4) && type == MIPHY_TYPE_PCIE)))
+	if (!((!strncmp(name, "sata", 4) && type == PHY_TYPE_SATA) ||
+	      (!strncmp(name, "pcie", 4) && type == PHY_TYPE_PCIE)))
 		return 0;
 
 	miphy_phy->base = of_iomap(phynode, index);
@@ -499,8 +499,8 @@ static struct phy *miphy365x_xlate(struct device *dev,
 
 	miphy_phy->type = args->args[0];
 
-	if (!(miphy_phy->type == MIPHY_TYPE_SATA ||
-	      miphy_phy->type == MIPHY_TYPE_PCIE)) {
+	if (!(miphy_phy->type == PHY_TYPE_SATA ||
+	      miphy_phy->type == PHY_TYPE_PCIE)) {
 		dev_err(dev, "Unsupported device type: %d\n", miphy_phy->type);
 		return ERR_PTR(-EINVAL);
 	}
diff --git a/drivers/phy/phy-omap-control.c b/drivers/phy/phy-omap-control.c
index 93252e0..e9c41b3 100644
--- a/drivers/phy/phy-omap-control.c
+++ b/drivers/phy/phy-omap-control.c
@@ -216,7 +216,6 @@ void omap_control_usb_set_mode(struct device *dev,
 		return;
 
 	ctrl_phy = dev_get_drvdata(dev);
-
 	if (!ctrl_phy) {
 		dev_err(dev, "Invalid control phy device\n");
 		return;
@@ -241,8 +240,6 @@ void omap_control_usb_set_mode(struct device *dev,
 }
 EXPORT_SYMBOL_GPL(omap_control_usb_set_mode);
 
-#ifdef CONFIG_OF
-
 static const enum omap_control_phy_type otghs_data = OMAP_CTRL_TYPE_OTGHS;
 static const enum omap_control_phy_type usb2_data = OMAP_CTRL_TYPE_USB2;
 static const enum omap_control_phy_type pipe3_data = OMAP_CTRL_TYPE_PIPE3;
@@ -278,8 +275,6 @@ static const struct of_device_id omap_control_phy_id_table[] = {
 	{},
 };
 MODULE_DEVICE_TABLE(of, omap_control_phy_id_table);
-#endif
-
 
 static int omap_control_phy_probe(struct platform_device *pdev)
 {
@@ -287,8 +282,7 @@ static int omap_control_phy_probe(struct platform_device *pdev)
 	const struct of_device_id *of_id;
 	struct omap_control_phy *control_phy;
 
-	of_id = of_match_device(of_match_ptr(omap_control_phy_id_table),
-				&pdev->dev);
+	of_id = of_match_device(omap_control_phy_id_table, &pdev->dev);
 	if (!of_id)
 		return -EINVAL;
 
@@ -344,7 +338,7 @@ static struct platform_driver omap_control_phy_driver = {
 	.probe		= omap_control_phy_probe,
 	.driver		= {
 		.name	= "omap-control-phy",
-		.of_match_table = of_match_ptr(omap_control_phy_id_table),
+		.of_match_table = omap_control_phy_id_table,
 	},
 };
 
diff --git a/drivers/phy/phy-omap-usb2.c b/drivers/phy/phy-omap-usb2.c
index 4757e76..183ef43 100644
--- a/drivers/phy/phy-omap-usb2.c
+++ b/drivers/phy/phy-omap-usb2.c
@@ -144,7 +144,6 @@ static struct phy_ops ops = {
 	.owner		= THIS_MODULE,
 };
 
-#ifdef CONFIG_OF
 static const struct usb_phy_data omap_usb2_data = {
 	.label = "omap_usb2",
 	.flags = OMAP_USB2_HAS_START_SRP | OMAP_USB2_HAS_SET_VBUS,
@@ -185,7 +184,6 @@ static const struct of_device_id omap_usb2_id_table[] = {
 	{},
 };
 MODULE_DEVICE_TABLE(of, omap_usb2_id_table);
-#endif
 
 static int omap_usb2_probe(struct platform_device *pdev)
 {
@@ -200,7 +198,7 @@ static int omap_usb2_probe(struct platform_device *pdev)
 	const struct of_device_id *of_id;
 	struct usb_phy_data *phy_data;
 
-	of_id = of_match_device(of_match_ptr(omap_usb2_id_table), &pdev->dev);
+	of_id = of_match_device(omap_usb2_id_table, &pdev->dev);
 
 	if (!of_id)
 		return -EINVAL;
@@ -378,7 +376,7 @@ static struct platform_driver omap_usb2_driver = {
 	.driver		= {
 		.name	= "omap-usb2",
 		.pm	= DEV_PM_OPS,
-		.of_match_table = of_match_ptr(omap_usb2_id_table),
+		.of_match_table = omap_usb2_id_table,
 	},
 };
 
diff --git a/drivers/phy/phy-qcom-ufs.c b/drivers/phy/phy-qcom-ufs.c
index 44ee983..c4199e6 100644
--- a/drivers/phy/phy-qcom-ufs.c
+++ b/drivers/phy/phy-qcom-ufs.c
@@ -73,6 +73,7 @@ int ufs_qcom_phy_calibrate(struct ufs_qcom_phy *ufs_qcom_phy,
 out:
 	return ret;
 }
+EXPORT_SYMBOL_GPL(ufs_qcom_phy_calibrate);
 
 struct phy *ufs_qcom_phy_generic_probe(struct platform_device *pdev,
 				struct ufs_qcom_phy *common_cfg,
@@ -101,6 +102,7 @@ struct phy *ufs_qcom_phy_generic_probe(struct platform_device *pdev,
 	if (IS_ERR(generic_phy)) {
 		err =  PTR_ERR(generic_phy);
 		dev_err(dev, "%s: failed to create phy %d\n", __func__, err);
+		generic_phy = NULL;
 		goto out;
 	}
 
@@ -110,6 +112,7 @@ struct phy *ufs_qcom_phy_generic_probe(struct platform_device *pdev,
 out:
 	return generic_phy;
 }
+EXPORT_SYMBOL_GPL(ufs_qcom_phy_generic_probe);
 
 /*
  * This assumes the embedded phy structure inside generic_phy is of type
@@ -121,6 +124,7 @@ struct ufs_qcom_phy *get_ufs_qcom_phy(struct phy *generic_phy)
 {
 	return (struct ufs_qcom_phy *)phy_get_drvdata(generic_phy);
 }
+EXPORT_SYMBOL_GPL(get_ufs_qcom_phy);
 
 static
 int ufs_qcom_phy_base_init(struct platform_device *pdev,
@@ -131,40 +135,23 @@ int ufs_qcom_phy_base_init(struct platform_device *pdev,
 	int err = 0;
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy_mem");
-	if (!res) {
-		dev_err(dev, "%s: phy_mem resource not found\n", __func__);
-		err = -ENOMEM;
-		goto out;
-	}
-
 	phy_common->mmio = devm_ioremap_resource(dev, res);
 	if (IS_ERR((void const *)phy_common->mmio)) {
 		err = PTR_ERR((void const *)phy_common->mmio);
 		phy_common->mmio = NULL;
 		dev_err(dev, "%s: ioremap for phy_mem resource failed %d\n",
 			__func__, err);
-		goto out;
+		return err;
 	}
 
 	/* "dev_ref_clk_ctrl_mem" is optional resource */
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
 					   "dev_ref_clk_ctrl_mem");
-	if (!res) {
-		dev_dbg(dev, "%s: dev_ref_clk_ctrl_mem resource not found\n",
-			__func__);
-		goto out;
-	}
-
 	phy_common->dev_ref_clk_ctrl_mmio = devm_ioremap_resource(dev, res);
-	if (IS_ERR((void const *)phy_common->dev_ref_clk_ctrl_mmio)) {
-		err = PTR_ERR((void const *)phy_common->dev_ref_clk_ctrl_mmio);
+	if (IS_ERR((void const *)phy_common->dev_ref_clk_ctrl_mmio))
 		phy_common->dev_ref_clk_ctrl_mmio = NULL;
-		dev_err(dev, "%s: ioremap for dev_ref_clk_ctrl_mem resource failed %d\n",
-			__func__, err);
-	}
 
-out:
-	return err;
+	return 0;
 }
 
 static int __ufs_qcom_phy_clk_get(struct phy *phy,
@@ -228,6 +215,7 @@ ufs_qcom_phy_init_clks(struct phy *generic_phy,
 out:
 	return err;
 }
+EXPORT_SYMBOL_GPL(ufs_qcom_phy_init_clks);
 
 int
 ufs_qcom_phy_init_vregulators(struct phy *generic_phy,
@@ -252,6 +240,7 @@ ufs_qcom_phy_init_vregulators(struct phy *generic_phy,
 out:
 	return err;
 }
+EXPORT_SYMBOL_GPL(ufs_qcom_phy_init_vregulators);
 
 static int __ufs_qcom_phy_init_vreg(struct phy *phy,
 		struct ufs_qcom_phy_vreg *vreg, const char *name, bool optional)
@@ -647,6 +636,7 @@ int ufs_qcom_phy_remove(struct phy *generic_phy,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(ufs_qcom_phy_remove);
 
 int ufs_qcom_phy_exit(struct phy *generic_phy)
 {
@@ -657,6 +647,7 @@ int ufs_qcom_phy_exit(struct phy *generic_phy)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(ufs_qcom_phy_exit);
 
 int ufs_qcom_phy_is_pcs_ready(struct phy *generic_phy)
 {
@@ -725,6 +716,7 @@ out_disable_phy:
 out:
 	return err;
 }
+EXPORT_SYMBOL_GPL(ufs_qcom_phy_power_on);
 
 int ufs_qcom_phy_power_off(struct phy *generic_phy)
 {
@@ -743,3 +735,4 @@ int ufs_qcom_phy_power_off(struct phy *generic_phy)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(ufs_qcom_phy_power_off);
diff --git a/drivers/phy/phy-samsung-usb2.c b/drivers/phy/phy-samsung-usb2.c
index 4a12f66..55b6994 100644
--- a/drivers/phy/phy-samsung-usb2.c
+++ b/drivers/phy/phy-samsung-usb2.c
@@ -37,10 +37,14 @@ static int samsung_usb2_phy_power_on(struct phy *phy)
 		spin_lock(&drv->lock);
 		ret = inst->cfg->power_on(inst);
 		spin_unlock(&drv->lock);
+		if (ret)
+			goto err_power_on;
 	}
 
 	return 0;
 
+err_power_on:
+	clk_disable_unprepare(drv->ref_clk);
 err_instance_clk:
 	clk_disable_unprepare(drv->clk);
 err_main_clk:
@@ -51,7 +55,7 @@ static int samsung_usb2_phy_power_off(struct phy *phy)
 {
 	struct samsung_usb2_phy_instance *inst = phy_get_drvdata(phy);
 	struct samsung_usb2_phy_driver *drv = inst->drv;
-	int ret = 0;
+	int ret;
 
 	dev_dbg(drv->dev, "Request to power_off \"%s\" usb phy\n",
 		inst->cfg->label);
@@ -59,10 +63,12 @@ static int samsung_usb2_phy_power_off(struct phy *phy)
 		spin_lock(&drv->lock);
 		ret = inst->cfg->power_off(inst);
 		spin_unlock(&drv->lock);
+		if (ret)
+			return ret;
 	}
 	clk_disable_unprepare(drv->ref_clk);
 	clk_disable_unprepare(drv->clk);
-	return ret;
+	return 0;
 }
 
 static struct phy_ops samsung_usb2_phy_ops = {
diff --git a/drivers/phy/phy-spear1310-miphy.c b/drivers/phy/phy-spear1310-miphy.c
index 9f47fae..65ae640 100644
--- a/drivers/phy/phy-spear1310-miphy.c
+++ b/drivers/phy/phy-spear1310-miphy.c
@@ -192,14 +192,14 @@ static struct phy *spear1310_miphy_xlate(struct device *dev,
 
 	if (args->args_count < 1) {
 		dev_err(dev, "DT did not pass correct no of args\n");
-		return NULL;
+		return ERR_PTR(-ENODEV);
 	}
 
 	priv->mode = args->args[0];
 
 	if (priv->mode != SATA && priv->mode != PCIE) {
 		dev_err(dev, "DT did not pass correct phy mode\n");
-		return NULL;
+		return ERR_PTR(-ENODEV);
 	}
 
 	return priv->phy;
diff --git a/drivers/phy/phy-spear1340-miphy.c b/drivers/phy/phy-spear1340-miphy.c
index e42bc20..1a00c28 100644
--- a/drivers/phy/phy-spear1340-miphy.c
+++ b/drivers/phy/phy-spear1340-miphy.c
@@ -229,14 +229,14 @@ static struct phy *spear1340_miphy_xlate(struct device *dev,
 
 	if (args->args_count < 1) {
 		dev_err(dev, "DT did not pass correct no of args\n");
-		return NULL;
+		return ERR_PTR(-ENODEV);
 	}
 
 	priv->mode = args->args[0];
 
 	if (priv->mode != SATA && priv->mode != PCIE) {
 		dev_err(dev, "DT did not pass correct phy mode\n");
-		return NULL;
+		return ERR_PTR(-ENODEV);
 	}
 
 	return priv->phy;
diff --git a/drivers/phy/phy-stih41x-usb.c b/drivers/phy/phy-stih41x-usb.c
index a603801..c093b47 100644
--- a/drivers/phy/phy-stih41x-usb.c
+++ b/drivers/phy/phy-stih41x-usb.c
@@ -87,8 +87,12 @@ static int stih41x_usb_phy_power_on(struct phy *phy)
 		return ret;
 	}
 
-	return regmap_update_bits(phy_dev->regmap, phy_dev->cfg->syscfg,
-			phy_dev->cfg->oscok, phy_dev->cfg->oscok);
+	ret = regmap_update_bits(phy_dev->regmap, phy_dev->cfg->syscfg,
+				 phy_dev->cfg->oscok, phy_dev->cfg->oscok);
+	if (ret)
+		clk_disable_unprepare(phy_dev->clk);
+
+	return ret;
 }
 
 static int stih41x_usb_phy_power_off(struct phy *phy)
diff --git a/drivers/phy/phy-sun9i-usb.c b/drivers/phy/phy-sun9i-usb.c
new file mode 100644
index 0000000..0095914
--- /dev/null
+++ b/drivers/phy/phy-sun9i-usb.c
@@ -0,0 +1,202 @@
+/*
+ * Allwinner sun9i USB phy driver
+ *
+ * Copyright (C) 2014-2015 Chen-Yu Tsai <wens@csie.org>
+ *
+ * Based on phy-sun4i-usb.c from
+ * Hans de Goede <hdegoede@redhat.com>
+ *
+ * and code from
+ * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/phy/phy.h>
+#include <linux/usb/of.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+
+#define SUNXI_AHB_INCR16_BURST_EN	BIT(11)
+#define SUNXI_AHB_INCR8_BURST_EN	BIT(10)
+#define SUNXI_AHB_INCR4_BURST_EN	BIT(9)
+#define SUNXI_AHB_INCRX_ALIGN_EN	BIT(8)
+#define SUNXI_ULPI_BYPASS_EN		BIT(0)
+
+/* usb1 HSIC specific bits */
+#define SUNXI_EHCI_HS_FORCE		BIT(20)
+#define SUNXI_HSIC_CONNECT_DET		BIT(17)
+#define SUNXI_HSIC_CONNECT_INT		BIT(16)
+#define SUNXI_HSIC			BIT(1)
+
+struct sun9i_usb_phy {
+	struct phy *phy;
+	void __iomem *pmu;
+	struct reset_control *reset;
+	struct clk *clk;
+	struct clk *hsic_clk;
+	enum usb_phy_interface type;
+};
+
+static void sun9i_usb_phy_passby(struct sun9i_usb_phy *phy, int enable)
+{
+	u32 bits, reg_value;
+
+	bits = SUNXI_AHB_INCR16_BURST_EN | SUNXI_AHB_INCR8_BURST_EN |
+		SUNXI_AHB_INCR4_BURST_EN | SUNXI_AHB_INCRX_ALIGN_EN |
+		SUNXI_ULPI_BYPASS_EN;
+
+	if (phy->type == USBPHY_INTERFACE_MODE_HSIC)
+		bits |= SUNXI_HSIC | SUNXI_EHCI_HS_FORCE |
+			SUNXI_HSIC_CONNECT_DET | SUNXI_HSIC_CONNECT_INT;
+
+	reg_value = readl(phy->pmu);
+
+	if (enable)
+		reg_value |= bits;
+	else
+		reg_value &= ~bits;
+
+	writel(reg_value, phy->pmu);
+}
+
+static int sun9i_usb_phy_init(struct phy *_phy)
+{
+	struct sun9i_usb_phy *phy = phy_get_drvdata(_phy);
+	int ret;
+
+	ret = clk_prepare_enable(phy->clk);
+	if (ret)
+		goto err_clk;
+
+	ret = clk_prepare_enable(phy->hsic_clk);
+	if (ret)
+		goto err_hsic_clk;
+
+	ret = reset_control_deassert(phy->reset);
+	if (ret)
+		goto err_reset;
+
+	sun9i_usb_phy_passby(phy, 1);
+	return 0;
+
+err_reset:
+	clk_disable_unprepare(phy->hsic_clk);
+
+err_hsic_clk:
+	clk_disable_unprepare(phy->clk);
+
+err_clk:
+	return ret;
+}
+
+static int sun9i_usb_phy_exit(struct phy *_phy)
+{
+	struct sun9i_usb_phy *phy = phy_get_drvdata(_phy);
+
+	sun9i_usb_phy_passby(phy, 0);
+	reset_control_assert(phy->reset);
+	clk_disable_unprepare(phy->hsic_clk);
+	clk_disable_unprepare(phy->clk);
+
+	return 0;
+}
+
+static struct phy_ops sun9i_usb_phy_ops = {
+	.init		= sun9i_usb_phy_init,
+	.exit		= sun9i_usb_phy_exit,
+	.owner		= THIS_MODULE,
+};
+
+static int sun9i_usb_phy_probe(struct platform_device *pdev)
+{
+	struct sun9i_usb_phy *phy;
+	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
+	struct phy_provider *phy_provider;
+	struct resource *res;
+
+	phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
+	if (!phy)
+		return -ENOMEM;
+
+	phy->type = of_usb_get_phy_mode(np);
+	if (phy->type == USBPHY_INTERFACE_MODE_HSIC) {
+		phy->clk = devm_clk_get(dev, "hsic_480M");
+		if (IS_ERR(phy->clk)) {
+			dev_err(dev, "failed to get hsic_480M clock\n");
+			return PTR_ERR(phy->clk);
+		}
+
+		phy->hsic_clk = devm_clk_get(dev, "hsic_12M");
+		if (IS_ERR(phy->clk)) {
+			dev_err(dev, "failed to get hsic_12M clock\n");
+			return PTR_ERR(phy->clk);
+		}
+
+		phy->reset = devm_reset_control_get(dev, "hsic");
+		if (IS_ERR(phy->reset)) {
+			dev_err(dev, "failed to get reset control\n");
+			return PTR_ERR(phy->reset);
+		}
+	} else {
+		phy->clk = devm_clk_get(dev, "phy");
+		if (IS_ERR(phy->clk)) {
+			dev_err(dev, "failed to get phy clock\n");
+			return PTR_ERR(phy->clk);
+		}
+
+		phy->reset = devm_reset_control_get(dev, "phy");
+		if (IS_ERR(phy->reset)) {
+			dev_err(dev, "failed to get reset control\n");
+			return PTR_ERR(phy->reset);
+		}
+	}
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	phy->pmu = devm_ioremap_resource(dev, res);
+	if (IS_ERR(phy->pmu))
+		return PTR_ERR(phy->pmu);
+
+	phy->phy = devm_phy_create(dev, NULL, &sun9i_usb_phy_ops);
+	if (IS_ERR(phy->phy)) {
+		dev_err(dev, "failed to create PHY\n");
+		return PTR_ERR(phy->phy);
+	}
+
+	phy_set_drvdata(phy->phy, phy);
+	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+
+	return PTR_ERR_OR_ZERO(phy_provider);
+}
+
+static const struct of_device_id sun9i_usb_phy_of_match[] = {
+	{ .compatible = "allwinner,sun9i-a80-usb-phy" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, sun9i_usb_phy_of_match);
+
+static struct platform_driver sun9i_usb_phy_driver = {
+	.probe	= sun9i_usb_phy_probe,
+	.driver = {
+		.of_match_table	= sun9i_usb_phy_of_match,
+		.name  = "sun9i-usb-phy",
+	}
+};
+module_platform_driver(sun9i_usb_phy_driver);
+
+MODULE_DESCRIPTION("Allwinner sun9i USB phy driver");
+MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/phy/phy-ti-pipe3.c b/drivers/phy/phy-ti-pipe3.c
index 2ba610b..53f295c 100644
--- a/drivers/phy/phy-ti-pipe3.c
+++ b/drivers/phy/phy-ti-pipe3.c
@@ -287,9 +287,7 @@ static struct phy_ops ops = {
 	.owner		= THIS_MODULE,
 };
 
-#ifdef CONFIG_OF
 static const struct of_device_id ti_pipe3_id_table[];
-#endif
 
 static int ti_pipe3_probe(struct platform_device *pdev)
 {
@@ -311,8 +309,7 @@ static int ti_pipe3_probe(struct platform_device *pdev)
 	spin_lock_init(&phy->lock);
 
 	if (!of_device_is_compatible(node, "ti,phy-pipe3-pcie")) {
-		match = of_match_device(of_match_ptr(ti_pipe3_id_table),
-					&pdev->dev);
+		match = of_match_device(ti_pipe3_id_table, &pdev->dev);
 		if (!match)
 			return -EINVAL;
 
@@ -570,7 +567,6 @@ static const struct dev_pm_ops ti_pipe3_pm_ops = {
 	SET_SYSTEM_SLEEP_PM_OPS(ti_pipe3_suspend, ti_pipe3_resume)
 };
 
-#ifdef CONFIG_OF
 static const struct of_device_id ti_pipe3_id_table[] = {
 	{
 		.compatible = "ti,phy-usb3",
@@ -590,7 +586,6 @@ static const struct of_device_id ti_pipe3_id_table[] = {
 	{}
 };
 MODULE_DEVICE_TABLE(of, ti_pipe3_id_table);
-#endif
 
 static struct platform_driver ti_pipe3_driver = {
 	.probe		= ti_pipe3_probe,
@@ -598,7 +593,7 @@ static struct platform_driver ti_pipe3_driver = {
 	.driver		= {
 		.name	= "ti-pipe3",
 		.pm	= &ti_pipe3_pm_ops,
-		.of_match_table = of_match_ptr(ti_pipe3_id_table),
+		.of_match_table = ti_pipe3_id_table,
 	},
 };
 
diff --git a/drivers/phy/phy-xgene.c b/drivers/phy/phy-xgene.c
index 2263cd0..385362e 100644
--- a/drivers/phy/phy-xgene.c
+++ b/drivers/phy/phy-xgene.c
@@ -1657,7 +1657,6 @@ static int xgene_phy_probe(struct platform_device *pdev)
 	struct phy_provider *phy_provider;
 	struct xgene_phy_ctx *ctx;
 	struct resource *res;
-	int rc = 0;
 	u32 default_spd[] = DEFAULT_SATA_SPD_SEL;
 	u32 default_txboost_gain[] = DEFAULT_SATA_TXBOOST_GAIN;
 	u32 default_txeye_direction[] = DEFAULT_SATA_TXEYEDIRECTION;
@@ -1676,10 +1675,8 @@ static int xgene_phy_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	ctx->sds_base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(ctx->sds_base)) {
-		rc = PTR_ERR(ctx->sds_base);
-		goto error;
-	}
+	if (IS_ERR(ctx->sds_base))
+		return PTR_ERR(ctx->sds_base);
 
 	/* Retrieve optional clock */
 	ctx->clk = clk_get(&pdev->dev, NULL);
@@ -1709,22 +1706,12 @@ static int xgene_phy_probe(struct platform_device *pdev)
 	ctx->phy = devm_phy_create(ctx->dev, NULL, &xgene_phy_ops);
 	if (IS_ERR(ctx->phy)) {
 		dev_dbg(&pdev->dev, "Failed to create PHY\n");
-		rc = PTR_ERR(ctx->phy);
-		goto error;
+		return PTR_ERR(ctx->phy);
 	}
 	phy_set_drvdata(ctx->phy, ctx);
 
-	phy_provider = devm_of_phy_provider_register(ctx->dev,
-						     xgene_phy_xlate);
-	if (IS_ERR(phy_provider)) {
-		rc = PTR_ERR(phy_provider);
-		goto error;
-	}
-
-	return 0;
-
-error:
-	return rc;
+	phy_provider = devm_of_phy_provider_register(ctx->dev, xgene_phy_xlate);
+	return PTR_ERR_OR_ZERO(phy_provider);
 }
 
 static const struct of_device_id xgene_phy_of_match[] = {