[PATCH v2 4/7] platform/chrome: cros_ec_typec: Update partner altmode active

Abhishek Pandit-Subedi
2024-10-30T21:29:12Z

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(+)

diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c
index 53d93baa36a8..0c8db11bd8a4 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;
--
2.47.0.163.g1226f6d8fa-goog