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usb: typec: hd3ss3220: Enable VBUS based on role state

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For systems where the ID pin isn't available as gpio use the ATTACHED_STATE
register instead to control vbus.

>From the datasheet:
"This is an additional method to communicate attach other
than the ID pin. These bits can be read by the application to
determine what was attached."

Use this method if id-gpios property is not set, but the connector node
has vbus-supply defined.

Signed-off-by: Jan Remmet <j.remmet@phytec.de>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260115-wip-jremmet-hd3ss3220_vbus-v1-1-b7d9adfbe346@phytec.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jan Remmet 2026-01-15 14:11:21 +01:00 • committed by Greg Kroah-Hartman
parent 4298475dee
commit 27fbc19e52
1 changed files with 18 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

27
drivers/usb/typec/hd3ss3220.c
View file

@ -204,6 +204,20 @@ static const struct typec_operations hd3ss3220_ops = {
.port_type_set = hd3ss3220_port_type_set,
};
static void hd3ss3220_regulator_control(struct hd3ss3220 *hd3ss3220, bool on)
{
int ret;
if (on)
ret = regulator_enable(hd3ss3220->vbus);
else
ret = regulator_disable(hd3ss3220->vbus);
if (ret)
dev_err(hd3ss3220->dev,
"vbus regulator %s failed: %d\n", on ? "disable" : "enable", ret);
}
static void hd3ss3220_set_role(struct hd3ss3220 *hd3ss3220)
{
enum usb_role role_state = hd3ss3220_get_attached_state(hd3ss3220);
@ -221,6 +235,9 @@ static void hd3ss3220_set_role(struct hd3ss3220 *hd3ss3220)
break;
}
if (hd3ss3220->vbus && !hd3ss3220->id_gpiod)
hd3ss3220_regulator_control(hd3ss3220, role_state == USB_ROLE_HOST);
hd3ss3220->role_state = role_state;
}
@ -330,18 +347,10 @@ static const struct regmap_config config = {
static irqreturn_t hd3ss3220_id_isr(int irq, void *dev_id)
{
struct hd3ss3220 *hd3ss3220 = dev_id;
int ret;
int id;
id = gpiod_get_value_cansleep(hd3ss3220->id_gpiod);
if (!id)
ret = regulator_enable(hd3ss3220->vbus);
else
ret = regulator_disable(hd3ss3220->vbus);
if (ret)
dev_err(hd3ss3220->dev,
"vbus regulator %s failed: %d\n", id ? "disable" : "enable", ret);
hd3ss3220_regulator_control(hd3ss3220, !id);
return IRQ_HANDLED;
}