When in single role port mode, we most start single-role toggling to
get an interrupt when a device / cable gets plugged into the port.
This commit implements the tcpc_dev start_srp_connection_detect callback
for this.
Signed-off-by: Hans de Goede <hdego...@redhat.com>
---
drivers/usb/typec/tcpm/fusb302.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/drivers/usb/typec/tcpm/fusb302.c b/drivers/usb/typec/tcpm/fusb302.c
index 6ea6199caafa..30413a45104f 100644
--- a/drivers/usb/typec/tcpm/fusb302.c
+++ b/drivers/usb/typec/tcpm/fusb302.c
@@ -876,6 +876,34 @@ static int tcpm_set_roles(struct tcpc_dev *dev, bool
attached,
return ret;
}
+static int tcpm_start_srp_connection_detect(struct tcpc_dev *dev,
+ enum typec_cc_status cc)
+{
+ struct fusb302_chip *chip = container_of(dev, struct fusb302_chip,
+ tcpc_dev);
+ int ret = 0;
+
+ mutex_lock(&chip->lock);
+ ret = fusb302_set_src_current(chip, cc_src_current[cc]);
+ if (ret < 0) {
+ fusb302_log(chip, "unable to set src current %s, ret=%d",
+ typec_cc_status_name[cc], ret);
+ goto done;
+ }
+ ret = fusb302_set_toggling(chip, (cc == TYPEC_CC_RD) ?
+ TOGGLING_MODE_SNK : TOGGLING_MODE_SRC);
+ if (ret < 0) {
+ fusb302_log(chip,
+ "unable to start srp toggling, ret=%d", ret);
+ goto done;
+ }
+ fusb302_log(chip, "start srp toggling");
+done:
+ mutex_unlock(&chip->lock);
+
+ return ret;
+}
+
static int tcpm_start_drp_toggling(struct tcpc_dev *dev,
enum typec_cc_status cc)
{
@@ -1095,6 +1123,8 @@ static void init_tcpc_dev(struct tcpc_dev
*fusb302_tcpc_dev)
fusb302_tcpc_dev->set_pd_rx = tcpm_set_pd_rx;
fusb302_tcpc_dev->set_roles = tcpm_set_roles;
fusb302_tcpc_dev->start_drp_toggling = tcpm_start_drp_toggling;
+ fusb302_tcpc_dev->start_srp_connection_detect =
+ tcpm_start_srp_connection_detect;
fusb302_tcpc_dev->pd_transmit = tcpm_pd_transmit;
}
--
2.21.0
