[PATCH 3/7] usb: phy: tegra: Get PHY mode using DT

[Venu Byravarasu]

Added a new PHY mode to support OTG.
Obtained Tegra USB PHY mode using DT property.

Signed-off-by: Venu Byravarasu <vbyravar...@nvidia.com>
---
 drivers/usb/host/ehci-tegra.c     |    3 +--
 drivers/usb/phy/tegra_usb_phy.c   |   13 +++++++++++--
 include/linux/usb/tegra_usb_phy.h |    3 ++-
 3 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index 568aecc..7afb962 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -732,8 +732,7 @@ static int tegra_ehci_probe(struct platform_device *pdev)
        }
 
        tegra->phy = tegra_usb_phy_open(&pdev->dev, instance, hcd->regs,
-                                       pdata->phy_config,
-                                       TEGRA_USB_PHY_MODE_HOST);
+                                       pdata->phy_config);
        if (IS_ERR(tegra->phy)) {
                dev_err(&pdev->dev, "Failed to open USB phy\n");
                err = -ENXIO;
diff --git a/drivers/usb/phy/tegra_usb_phy.c b/drivers/usb/phy/tegra_usb_phy.c
index 5487d38..93abd68 100644
--- a/drivers/usb/phy/tegra_usb_phy.c
+++ b/drivers/usb/phy/tegra_usb_phy.c
@@ -688,7 +688,7 @@ static int  tegra_usb_phy_suspend(struct usb_phy *x, int 
suspend)
 }
 
 struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
-       void __iomem *regs, void *config, enum tegra_usb_phy_mode phy_mode)
+       void __iomem *regs, void *config)
 {
        struct tegra_usb_phy *phy;
        unsigned long parent_rate;
@@ -703,7 +703,6 @@ struct tegra_usb_phy *tegra_usb_phy_open(struct device 
*dev, int instance,
        phy->instance = instance;
        phy->regs = regs;
        phy->config = config;
-       phy->mode = phy_mode;
        phy->dev = dev;
        phy->is_legacy_phy =
                of_property_read_bool(np, "nvidia,has-legacy-mode");
@@ -713,6 +712,16 @@ struct tegra_usb_phy *tegra_usb_phy_open(struct device 
*dev, int instance,
        else
                phy->is_ulpi_phy = true;
 
+       err = of_property_match_string(np, "dr_mode", "otg");
+       if (err < 0) {
+               err = of_property_match_string(np, "dr_mode", "gadget");
+               if (err < 0)
+                       phy->mode = TEGRA_USB_PHY_MODE_HOST;
+               else
+                       phy->mode = TEGRA_USB_PHY_MODE_DEVICE;
+       } else
+               phy->mode = TEGRA_USB_PHY_MODE_OTG;
+
        if (!phy->config) {
                if (phy->is_ulpi_phy) {
                        pr_err("%s: ulpi phy configuration missing", __func__);
diff --git a/include/linux/usb/tegra_usb_phy.h 
b/include/linux/usb/tegra_usb_phy.h
index 9ebebe9..a7af923 100644
--- a/include/linux/usb/tegra_usb_phy.h
+++ b/include/linux/usb/tegra_usb_phy.h
@@ -42,6 +42,7 @@ enum tegra_usb_phy_port_speed {
 enum tegra_usb_phy_mode {
        TEGRA_USB_PHY_MODE_DEVICE,
        TEGRA_USB_PHY_MODE_HOST,
+       TEGRA_USB_PHY_MODE_OTG,
 };
 
 struct tegra_xtal_freq;
@@ -64,7 +65,7 @@ struct tegra_usb_phy {
 };
 
 struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
-       void __iomem *regs, void *config, enum tegra_usb_phy_mode phy_mode);
+       void __iomem *regs, void *config);
 
 void tegra_usb_phy_preresume(struct usb_phy *phy);
 
-- 
1.7.0.4

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