[PATCH v9 22/38] phy: rockchip: usbdp: Properly handle TYPEC_STATE_SAFE and TYPEC_STATE_USB
From: Sebastian Reichel <hidden>
Date: 2026-07-01 23:35:56
Also in:
linux-arm-kernel, linux-phy, linux-rockchip, linux-usb, lkml
Subsystem:
arm/rockchip soc support, generic phy framework, the rest · Maintainers:
Heiko Stuebner, Vinod Koul, Linus Torvalds
Handle TYPEC_STATE_SAFE and TYPEC_STATE_USB Type-C state events,
so that the muxing is properly updated when exiting DP AltMode.
Fixes: 2f70bbddeb45 ("phy: rockchip: add usbdp combo phy driver")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://sashiko.dev/#/message/20260619155020.CC7361F000E9%40smtp.kernel.org
Signed-off-by: Sebastian Reichel <redacted>
---
drivers/phy/rockchip/phy-rockchip-usbdp.c | 21 +++++++++++++++------
1 file changed, 15 insertions(+), 6 deletions(-)
diff --git a/drivers/phy/rockchip/phy-rockchip-usbdp.c b/drivers/phy/rockchip/phy-rockchip-usbdp.c
index 70ef02c4a187..9f0c0127e6d0 100644
--- a/drivers/phy/rockchip/phy-rockchip-usbdp.c
+++ b/drivers/phy/rockchip/phy-rockchip-usbdp.c@@ -1329,17 +1329,26 @@ static const struct phy_ops rk_udphy_usb3_phy_ops = { .owner = THIS_MODULE, }; +static bool rk_udphy_is_supported_mode(struct typec_mux_state *state) +{ + /* Handle Safe State and USB State */ + if (state->mode < TYPEC_STATE_MODAL) + return true; + + /* Handle DP AltMode */ + if (state->alt && state->alt->svid == USB_TYPEC_DP_SID) + return true; + + return false; +} + static int rk_udphy_typec_mux_set(struct typec_mux_dev *mux, struct typec_mux_state *state) { struct rk_udphy *udphy = typec_mux_get_drvdata(mux); - /* - * Ignore mux events not involving DP AltMode, because - * the mode field is being reused, e.g. state->mode == 4 - * could be either TYPEC_MODE_USB4 or TYPEC_DP_STATE_C. - */ - if (!state->alt || state->alt->svid != USB_TYPEC_DP_SID) + /* Ignore mux events not involving USB or DP */ + if (!rk_udphy_is_supported_mode(state)) return 0; mutex_lock(&udphy->mutex);
--
2.53.0