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[v3,4/7] platform/chrome: cros_ec_typec: Update partner altmode active

Message ID 20241107112955.v3.4.I083bf9188947be8cb7460211cfdf3233370a28f6@changeid
State Superseded
Headers show
Series Thunderbolt and DP altmode support for cros-ec-typec | expand

Commit Message

Abhishek Pandit-Subedi Nov. 7, 2024, 7:29 p.m. UTC 
Mux configuration is often the final piece of mode entry and can be used
to determine whether a partner altmode is active. When mux configuration
is done, use the active port altmode's SVID to set the partner active
field for all partner alt modes.

Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
---

(no changes since v1)

 drivers/platform/chrome/cros_ec_typec.c | 11 +++++++++++
 1 file changed, 11 insertions(+)
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Patch

diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c
index c7781aea0b88..e3eabe5e42ac 100644
--- a/drivers/platform/chrome/cros_ec_typec.c
+++ b/drivers/platform/chrome/cros_ec_typec.c
@@ -618,6 +618,7 @@  static int cros_typec_configure_mux(struct cros_typec_data *typec, int port_num,
 	};
 	struct ec_params_usb_pd_mux_ack mux_ack;
 	enum typec_orientation orientation;
+	struct cros_typec_altmode_node *node, *n;
 	int ret;
 
 	ret = cros_ec_cmd(typec->ec, 0, EC_CMD_USB_PD_MUX_INFO,
@@ -676,6 +677,16 @@  static int cros_typec_configure_mux(struct cros_typec_data *typec, int port_num,
 			port->mux_flags);
 	}
 
+	/* Iterate all partner alt-modes and set the active alternate mode. */
+	list_for_each_entry_safe(node, n, &port->partner_mode_list, list) {
+		if (port->state.alt != NULL &&
+		    node->amode->svid == port->state.alt->svid) {
+			typec_altmode_update_active(node->amode, true);
+		} else {
+			typec_altmode_update_active(node->amode, false);
+		}
+	}
+
 mux_ack:
 	if (!typec->needs_mux_ack)
 		return ret;