[PATCH v2 05/15] phy: renesas: rcar-gen3-usb2: Check dr_mode when not using OTG

[Chris Brandt]

When not using OTG, the PHY will need to know if it should function as
host or peripheral by checking dr_mode in the PHY node (not the parent
controller node).

Signed-off-by: Chris Brandt <chris.bra...@renesas.com>
---
v2:
 * added braces to else statement
 * check if dr_mode is "host"
---
 drivers/phy/renesas/phy-rcar-gen3-usb2.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/phy/renesas/phy-rcar-gen3-usb2.c 
b/drivers/phy/renesas/phy-rcar-gen3-usb2.c
index 1ebb08f8323f..5e5e5e938f80 100644
--- a/drivers/phy/renesas/phy-rcar-gen3-usb2.c
+++ b/drivers/phy/renesas/phy-rcar-gen3-usb2.c
@@ -391,6 +391,7 @@ static int rcar_gen3_phy_usb2_init(struct phy *p)
        struct rcar_gen3_phy *rphy = phy_get_drvdata(p);
        struct rcar_gen3_chan *channel = rphy->ch;
        void __iomem *usb2_base = channel->base;
+       enum usb_dr_mode mode;
        u32 val;
 
        if (channel->uses_usb_x1)
@@ -408,6 +409,13 @@ static int rcar_gen3_phy_usb2_init(struct phy *p)
                if (rcar_gen3_needs_init_otg(channel))
                        rcar_gen3_init_otg(channel);
                rphy->otg_initialized = true;
+       } else {
+               /* Not OTG, so dr_mode should be set in PHY node */
+               mode = usb_get_dr_mode(channel->dev);
+               if (mode == USB_DR_MODE_HOST)
+                       writel(0x00000000, usb2_base + USB2_COMMCTRL);
+               else if (mode == USB_DR_MODE_PERIPHERAL)
+                       writel(0x80000000, usb2_base + USB2_COMMCTRL);
        }
 
        rphy->initialized = true;
-- 
2.16.1