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usb: typec: tcpci: support setting orientation via GPIO

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If the chip indicates its "Connection Orientation" standard output control
in STANDARD_OUTPUT_CAPABILITIES register, it can do the thing by
programming CONFIG_STANDARD_OUTPUT register. Due to the optional feature,
the chip which not present this capability currently doesn't have a way to
correctly set the data path. This add the support to set orientation via
a simple GPIO.

Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260319-support-setting-orientation-use-gpio-v4-2-ab6dfa8610c2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Xu Yang 2026-03-19 17:48:49 +08:00 committed by Greg Kroah-Hartman
parent 7ef80d637e
commit 35a99b690c
1 changed files with 18 additions and 0 deletions
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18
drivers/usb/typec/tcpm/tcpci.c
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@ -7,6 +7,7 @@
#include <linux/bitfield.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/i2c.h>
@ -42,6 +43,7 @@ struct tcpci {
struct tcpc_dev tcpc;
struct tcpci_data *data;
struct gpio_desc *orientation_gpio;
};
struct tcpci_chip {
@ -316,6 +318,10 @@ static int tcpci_set_orientation(struct tcpc_dev *tcpc,
struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
unsigned int reg;
if (tcpci->orientation_gpio)
return gpiod_set_value_cansleep(tcpci->orientation_gpio,
orientation != TYPEC_ORIENTATION_NORMAL);
switch (orientation) {
case TYPEC_ORIENTATION_NONE:
/* We can't put a single output into high impedance */
@ -903,6 +909,7 @@ EXPORT_SYMBOL_GPL(tcpci_unregister_port);
static int tcpci_probe(struct i2c_client *client)
{
struct tcpci_chip *chip;
struct gpio_desc *orient_gpio = NULL;
int err;
u16 val = 0;
@ -931,12 +938,23 @@ static int tcpci_probe(struct i2c_client *client)
if (err < 0)
return err;
if (err == 0) {
orient_gpio = devm_gpiod_get_optional(&client->dev, "orientation",
GPIOD_OUT_LOW);
if (IS_ERR(orient_gpio))
return dev_err_probe(&client->dev, PTR_ERR(orient_gpio),
"unable to acquire orientation gpio\n");
err = !!orient_gpio;
}
chip->data.set_orientation = err;
chip->tcpci = tcpci_register_port(&client->dev, &chip->data);
if (IS_ERR(chip->tcpci))
return PTR_ERR(chip->tcpci);
chip->tcpci->orientation_gpio = orient_gpio;
err = devm_request_threaded_irq(&client->dev, client->irq, NULL,
_tcpci_irq,
IRQF_SHARED | IRQF_ONESHOT,