This is a note to let you know that I've just added the patch titled
usb: ucsi: glink: use the connector orientation GPIO to provide switch events
to the 6.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-ucsi-glink-use-the-connector-orientation-gpio-to.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c33d251fa91046b0ba598400a5d9e711d01ff977
Author: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Date: Mon Oct 2 12:20:22 2023 +0200
usb: ucsi: glink: use the connector orientation GPIO to provide switch events
[ Upstream commit c6165ed2f425c273244191930a47c8be23bc51bd ]
On SM8550, the non-altmode orientation is not given anymore within
altmode events, even with USB SVIDs events.
On the other side, the Type-C connector orientation is correctly
reported by a signal from the PMIC.
Take this gpio signal when we detect some Type-C port activity
to notify any Type-C switches tied to the Type-C port connectors.
Acked-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Acked-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20231002-topic-sm8550-upstream-type-c-orientation-v2-2-125410d3ff95@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/usb/typec/ucsi/ucsi_glink.c b/drivers/usb/typec/ucsi/ucsi_glink.c
index 1fe9cb5b6bd96..a2d862eebcecb 100644
--- a/drivers/usb/typec/ucsi/ucsi_glink.c
+++ b/drivers/usb/typec/ucsi/ucsi_glink.c
@@ -9,9 +9,13 @@
#include <linux/mutex.h>
#include <linux/property.h>
#include <linux/soc/qcom/pdr.h>
+#include <linux/usb/typec_mux.h>
+#include <linux/gpio/consumer.h>
#include <linux/soc/qcom/pmic_glink.h>
#include "ucsi.h"
+#define PMIC_GLINK_MAX_PORTS 2
+
#define UCSI_BUF_SIZE 48
#define MSG_TYPE_REQ_RESP 1
@@ -53,6 +57,9 @@ struct ucsi_notify_ind_msg {
struct pmic_glink_ucsi {
struct device *dev;
+ struct gpio_desc *port_orientation[PMIC_GLINK_MAX_PORTS];
+ struct typec_switch *port_switch[PMIC_GLINK_MAX_PORTS];
+
struct pmic_glink_client *client;
struct ucsi *ucsi;
@@ -221,8 +228,20 @@ static void pmic_glink_ucsi_notify(struct work_struct *work)
}
con_num = UCSI_CCI_CONNECTOR(cci);
- if (con_num)
+ if (con_num) {
+ if (con_num < PMIC_GLINK_MAX_PORTS &&
+ ucsi->port_orientation[con_num - 1]) {
+ int orientation = gpiod_get_value(ucsi->port_orientation[con_num - 1]);
+
+ if (orientation >= 0) {
+ typec_switch_set(ucsi->port_switch[con_num - 1],
+ orientation ? TYPEC_ORIENTATION_REVERSE
+ : TYPEC_ORIENTATION_NORMAL);
+ }
+ }
+
ucsi_connector_change(ucsi->ucsi, con_num);
+ }
if (ucsi->sync_pending && cci & UCSI_CCI_BUSY) {
ucsi->sync_val = -EBUSY;
@@ -283,6 +302,7 @@ static int pmic_glink_ucsi_probe(struct auxiliary_device *adev,
{
struct pmic_glink_ucsi *ucsi;
struct device *dev = &adev->dev;
+ struct fwnode_handle *fwnode;
int ret;
ucsi = devm_kzalloc(dev, sizeof(*ucsi), GFP_KERNEL);
@@ -310,6 +330,38 @@ static int pmic_glink_ucsi_probe(struct auxiliary_device *adev,
ucsi_set_drvdata(ucsi->ucsi, ucsi);
+ device_for_each_child_node(dev, fwnode) {
+ struct gpio_desc *desc;
+ u32 port;
+
+ ret = fwnode_property_read_u32(fwnode, "reg", &port);
+ if (ret < 0) {
+ dev_err(dev, "missing reg property of %pOFn\n", fwnode);
+ return ret;
+ }
+
+ if (port >= PMIC_GLINK_MAX_PORTS) {
+ dev_warn(dev, "invalid connector number, ignoring\n");
+ continue;
+ }
+
+ desc = devm_gpiod_get_index_optional(&adev->dev, "orientation", port, GPIOD_IN);
+
+ /* If GPIO isn't found, continue */
+ if (!desc)
+ continue;
+
+ if (IS_ERR(desc))
+ return dev_err_probe(dev, PTR_ERR(desc),
+ "unable to acquire orientation gpio\n");
+ ucsi->port_orientation[port] = desc;
+
+ ucsi->port_switch[port] = fwnode_typec_switch_get(fwnode);
+ if (IS_ERR(ucsi->port_switch[port]))
+ return dev_err_probe(dev, PTR_ERR(ucsi->port_switch[port]),
+ "failed to acquire orientation-switch\n");
+ }
+
ucsi->client = devm_pmic_glink_register_client(dev,
PMIC_GLINK_OWNER_USBC,
pmic_glink_ucsi_callback,
