This change adds callback to evaluate presence of contaminant in
the TCPCI layer.
Signed-off-by: Badhri Jagan Sridharan <[email protected]>
---
drivers/usb/typec/tcpm/tcpci.c | 9 +++++++++
include/linux/usb/tcpci.h | 7 +++++++
2 files changed, 16 insertions(+)
diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c
index 50674ecf430d..53f6fad61781 100644
--- a/drivers/usb/typec/tcpm/tcpci.c
+++ b/drivers/usb/typec/tcpm/tcpci.c
@@ -403,6 +403,14 @@ static void tcpci_frs_sourcing_vbus(struct tcpc_dev *dev)
tcpci->data->frs_sourcing_vbus(tcpci, tcpci->data);
}
+static void tcpci_check_contaminant(struct tcpc_dev *dev, bool disconnect_while_debouncing)
+{
+ struct tcpci *tcpci = tcpc_to_tcpci(dev);
+
+ if (tcpci->data->check_contaminant)
+ tcpci->data->check_contaminant(tcpci, tcpci->data, disconnect_while_debouncing);
+}
+
static int tcpci_set_bist_data(struct tcpc_dev *tcpc, bool enable)
{
struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
@@ -777,6 +785,7 @@ struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data)
tcpci->tcpc.enable_frs = tcpci_enable_frs;
tcpci->tcpc.frs_sourcing_vbus = tcpci_frs_sourcing_vbus;
tcpci->tcpc.set_partner_usb_comm_capable = tcpci_set_partner_usb_comm_capable;
+ tcpci->tcpc.check_contaminant = tcpci_check_contaminant;
if (tcpci->data->auto_discharge_disconnect) {
tcpci->tcpc.enable_auto_vbus_discharge = tcpci_enable_auto_vbus_discharge;
diff --git a/include/linux/usb/tcpci.h b/include/linux/usb/tcpci.h
index 17657451c762..250b34ccbf9c 100644
--- a/include/linux/usb/tcpci.h
+++ b/include/linux/usb/tcpci.h
@@ -188,6 +188,11 @@ struct tcpci;
* Optional; The USB Communications Capable bit indicates if port
* partner is capable of communication over the USB data lines
* (e.g. D+/- or SS Tx/Rx). Called to notify the status of the bit.
+ * @check_contaminant:
+ * Optional;The callback is called when CC pins report open status
+ * at the end of the deboumce period or when the port is still
+ * toggling. Chip level drivers are expected to check for contaminant
+ * and call tcpm_clean_port when the port is clean.
*/
struct tcpci_data {
struct regmap *regmap;
@@ -204,6 +209,8 @@ struct tcpci_data {
void (*frs_sourcing_vbus)(struct tcpci *tcpci, struct tcpci_data *data);
void (*set_partner_usb_comm_capable)(struct tcpci *tcpci, struct tcpci_data *data,
bool capable);
+ void (*check_contaminant)(struct tcpci *tcpci, struct tcpci_data *data,
+ bool disconnect_while_debouncing);
};
struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data);
--
2.37.2.672.g94769d06f0-goog