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usb: ucsi: glink: use the connector orientation GPIO to provide switch events

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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@linux.intel.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231002-topic-sm8550-upstream-type-c-orientation-v2-2-125410d3ff95@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Neil Armstrong 2023-10-02 12:20:22 +02:00 committed by Greg Kroah-Hartman
parent 65682407f8
commit c6165ed2f4
1 changed files with 53 additions and 1 deletions
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54
drivers/usb/typec/ucsi/ucsi_glink.c
View file

@ -8,9 +8,13 @@
#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
@ -52,6 +56,9 @@ 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;
@ -220,8 +227,20 @@ 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;
@ -282,6 +301,7 @@ 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);
@ -309,6 +329,38 @@ 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,