[PATCH v4 06/16] phy: rockchip: usbdp: Add missing mode_change update

[Sebastian Reichel <sebastian.reichel@collabora.com>]

rk_udphy_set_typec_default_mapping() updates the available modes,
but does not set the mode_change as required. This results in
missing re-initialization and thus non-working DisplayPort.

Fix this issue by introducing a new helper to update the available
modes.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---
 drivers/phy/rockchip/phy-rockchip-usbdp.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/phy/rockchip/phy-rockchip-usbdp.c b/drivers/phy/rockchip/phy-rockchip-usbdp.c
index 97e53b933225..febc148a754e 100644
--- a/drivers/phy/rockchip/phy-rockchip-usbdp.c
+++ b/drivers/phy/rockchip/phy-rockchip-usbdp.c
@@ -619,6 +619,15 @@ static void rk_udphy_dp_hpd_event_trigger(struct rk_udphy *udphy, bool hpd)
 	rk_udphy_grfreg_write(udphy->vogrf, &cfg->vogrfcfg[udphy->id].hpd_trigger, hpd);
 }
 
+static void rk_udphy_mode_set(struct rk_udphy *udphy, u8 mode)
+{
+	if (udphy->mode == mode)
+		return;
+
+	udphy->mode_change = true;
+	udphy->mode = mode;
+}
+
 static void rk_udphy_set_typec_default_mapping(struct rk_udphy *udphy)
 {
 	if (udphy->flip) {
@@ -649,7 +658,7 @@ static void rk_udphy_set_typec_default_mapping(struct rk_udphy *udphy)
 		gpiod_set_value_cansleep(udphy->sbu2_dc_gpio, 1);
 	}
 
-	udphy->mode = UDPHY_MODE_DP_USB;
+	rk_udphy_mode_set(udphy, UDPHY_MODE_DP_USB);
 }
 
 static int rk_udphy_orien_sw_set(struct typec_switch_dev *sw,
@@ -1385,10 +1394,7 @@ static int rk_udphy_typec_mux_set(struct typec_mux_dev *mux,
 			usleep_range(750, 800);
 			rk_udphy_dp_hpd_event_trigger(udphy, true);
 		} else if (data->status & DP_STATUS_HPD_STATE) {
-			if (udphy->mode != mode) {
-				udphy->mode = mode;
-				udphy->mode_change = true;
-			}
+			rk_udphy_mode_set(udphy, mode);
 			rk_udphy_dp_hpd_event_trigger(udphy, true);
 		} else {
 			rk_udphy_dp_hpd_event_trigger(udphy, false);

-- 
2.53.0