[PATCH v17 1/7] phy: rockchip: usbdp: Track PHY power state

[Sebastian Reichel]

Track PHY state requested by software for DP and USB3 individually
in preparation to rework and fix up power state handling.

Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
---
 drivers/phy/rockchip/phy-rockchip-usbdp.c | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/drivers/phy/rockchip/phy-rockchip-usbdp.c b/drivers/phy/rockchip/phy-rockchip-usbdp.c
index e748acdd2d31..db69dd24f73b 100644
--- a/drivers/phy/rockchip/phy-rockchip-usbdp.c
+++ b/drivers/phy/rockchip/phy-rockchip-usbdp.c
@@ -175,6 +175,7 @@ struct rk_udphy {
 	bool phy_needs_reinit;
 	u8 mode;
 	u8 status;
+	u8 sw_mode; /* modes currently requested */
 
 	/* utilized for USB */
 	bool hs; /* flag for high-speed */
@@ -1051,11 +1052,15 @@ static int rk_udphy_dp_phy_power_on(struct phy *phy)
 	int ret;
 
 	scoped_guard(mutex, &udphy->mutex) {
+		udphy->sw_mode |= UDPHY_MODE_DP;
+
 		phy_set_bus_width(phy, udphy->dp_lanes);
 
 		ret = rk_udphy_power_on(udphy, UDPHY_MODE_DP);
-		if (ret)
+		if (ret) {
+			udphy->sw_mode &= ~UDPHY_MODE_DP;
 			return ret;
+		}
 
 		rk_udphy_dp_lane_enable(udphy, udphy->dp_lanes);
 
@@ -1078,6 +1083,8 @@ static int rk_udphy_dp_phy_power_off(struct phy *phy)
 
 	guard(mutex)(&udphy->mutex);
 
+	udphy->sw_mode &= ~UDPHY_MODE_DP;
+
 	rk_udphy_dp_lane_enable(udphy, 0);
 	rk_udphy_power_off(udphy, UDPHY_MODE_DP);
 
@@ -1286,16 +1293,25 @@ static const struct phy_ops rk_udphy_dp_phy_ops = {
 static int rk_udphy_usb3_phy_init(struct phy *phy)
 {
 	struct rk_udphy *udphy = phy_get_drvdata(phy);
+	int ret;
 
 	guard(mutex)(&udphy->mutex);
 
+	udphy->sw_mode |= UDPHY_MODE_USB;
+
 	/* DP only or high-speed, disable U3 port */
 	if (!(udphy->mode & UDPHY_MODE_USB) || udphy->hs) {
 		rk_udphy_u3_port_disable(udphy, true);
 		return 0;
 	}
 
-	return rk_udphy_power_on(udphy, UDPHY_MODE_USB);
+	ret = rk_udphy_power_on(udphy, UDPHY_MODE_USB);
+	if (ret) {
+		udphy->sw_mode &= ~UDPHY_MODE_USB;
+		return ret;
+	}
+
+	return 0;
 }
 
 static int rk_udphy_usb3_phy_exit(struct phy *phy)
@@ -1308,6 +1324,8 @@ static int rk_udphy_usb3_phy_exit(struct phy *phy)
 	if (!(udphy->mode & UDPHY_MODE_USB) || udphy->hs)
 		return 0;
 
+	udphy->sw_mode &= ~UDPHY_MODE_USB;
+
 	rk_udphy_power_off(udphy, UDPHY_MODE_USB);
 
 	return 0;

-- 
2.53.0