Enforce the same requirement as when we attempt to activate altmode via
sysfs (do not enter partner mode if port mode is not active). In order
to set a default value for this field, also introduce the inactive field
in struct typec_altmode_desc.
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@xxxxxxxxxxxx>
---
Changes in v3:
- Use port.active instead of introducing auto-enter field
- Introduce inactive field to typec_altmode_desc to set default value
for active.
- Always make port 'active' field writable
drivers/usb/typec/altmodes/displayport.c | 7 +++++--
drivers/usb/typec/altmodes/thunderbolt.c | 6 +++++-
drivers/usb/typec/class.c | 5 +++--
include/linux/usb/typec.h | 2 ++
4 files changed, 15 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c
index 3245e03d59e6..f4116e96f6a1 100644
--- a/drivers/usb/typec/altmodes/displayport.c
+++ b/drivers/usb/typec/altmodes/displayport.c
@@ -767,8 +767,11 @@ int dp_altmode_probe(struct typec_altmode *alt)
if (plug)
typec_altmode_set_drvdata(plug, dp);
- dp->state = plug ? DP_STATE_ENTER_PRIME : DP_STATE_ENTER;
- schedule_work(&dp->work);
+ /* Only attempt to enter altmode if port is active. */
+ if (port->active) {
+ dp->state = plug ? DP_STATE_ENTER_PRIME : DP_STATE_ENTER;
+ schedule_work(&dp->work);
+ }
return 0;
}
diff --git a/drivers/usb/typec/altmodes/thunderbolt.c b/drivers/usb/typec/altmodes/thunderbolt.c
index a945b9d35a1d..45567abc3bb8 100644
--- a/drivers/usb/typec/altmodes/thunderbolt.c
+++ b/drivers/usb/typec/altmodes/thunderbolt.c
@@ -212,6 +212,7 @@ static const struct typec_altmode_ops tbt_altmode_ops = {
static int tbt_altmode_probe(struct typec_altmode *alt)
{
+ const struct typec_altmode *port = typec_altmode_get_partner(alt);
struct tbt_altmode *tbt;
tbt = devm_kzalloc(&alt->dev, sizeof(*tbt), GFP_KERNEL);
@@ -226,7 +227,10 @@ static int tbt_altmode_probe(struct typec_altmode *alt)
typec_altmode_set_drvdata(alt, tbt);
typec_altmode_set_ops(alt, &tbt_altmode_ops);
- if (tbt_ready(alt)) {
+ /* Only attempt to enter altmode if port is active and cable/plug
+ * information is ready.
+ */
+ if (port->active && tbt_ready(alt)) {
if (tbt->plug[TYPEC_PLUG_SOP_PP])
tbt->state = TBT_STATE_SOP_PP_ENTER;
else if (tbt->plug[TYPEC_PLUG_SOP_P])
diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index febe453b96be..b5e67a57762c 100644
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -458,7 +458,8 @@ static umode_t typec_altmode_attr_is_visible(struct kobject *kobj,
struct typec_altmode *adev = to_typec_altmode(kobj_to_dev(kobj));
if (attr == &dev_attr_active.attr)
- if (!adev->ops || !adev->ops->activate)
+ if (!is_typec_port(adev->dev.parent) &&
+ (!adev->ops || !adev->ops->activate))
return 0444;
return attr->mode;
@@ -563,7 +564,7 @@ typec_register_altmode(struct device *parent,
if (is_port) {
alt->attrs[3] = &dev_attr_supported_roles.attr;
- alt->adev.active = true; /* Enabled by default */
+ alt->adev.active = !desc->inactive; /* Enabled by default */
}
sprintf(alt->group_name, "mode%d", desc->mode);
diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h
index d616b8807000..56c01771c190 100644
--- a/include/linux/usb/typec.h
+++ b/include/linux/usb/typec.h
@@ -140,6 +140,7 @@ int typec_cable_set_identity(struct typec_cable *cable);
* @mode: Index of the Mode
* @vdo: VDO returned by Discover Modes USB PD command
* @roles: Only for ports. DRP if the mode is available in both roles
+ * @inactive: Only for ports. Make this port inactive (default is active).
*
* Description of an Alternate Mode which a connector, cable plug or partner
* supports.
@@ -150,6 +151,7 @@ struct typec_altmode_desc {
u32 vdo;
/* Only used with ports */
enum typec_port_data roles;
+ bool inactive : 1;
};
void typec_partner_set_pd_revision(struct typec_partner *partner, u16 pd_revision);
--
2.47.0.277.g8800431eea-goog
