[PATCH v4 03/13] phy: renesas: rcar-gen3-usb2: Check dr_mode when not using OTG

[Chris Brandt <chris.brandt@renesas.com>]

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.brandt@renesas.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
---
v4:
 * added reviewed-by
v3:
 * changed 'if' to 'switch'
 * use rcar_gen3_set_host_mode() instead of writel()
v2:
 * added braces to else statement
 * check if dr_mode is "host"
---
 drivers/phy/renesas/phy-rcar-gen3-usb2.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/phy/renesas/phy-rcar-gen3-usb2.c b/drivers/phy/renesas/phy-rcar-gen3-usb2.c
index 06e0fc804226..29da9c46ad9b 100644
--- a/drivers/phy/renesas/phy-rcar-gen3-usb2.c
+++ b/drivers/phy/renesas/phy-rcar-gen3-usb2.c
@@ -412,6 +412,18 @@ 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 */
+		switch (usb_get_dr_mode(channel->dev)) {
+		case USB_DR_MODE_HOST:
+			rcar_gen3_set_host_mode(channel, 1);
+			break;
+		case USB_DR_MODE_PERIPHERAL:
+			rcar_gen3_set_host_mode(channel, 0);
+			break;
+		default:
+			break;
+		}
 	}
 
 	rphy->initialized = true;
-- 
2.16.1