| Message ID | 20240408-ucsi-orient-aware-v1-1-95a74a163a10@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | usb: typec: ucsi: glink: rework orientation handling | expand |
On Mon, Apr 08, 2024 at 07:30:49AM +0300, Dmitry Baryshkov wrote: > Allow UCSI glue driver to perform addtional work to update connector > status. For example, it might check the cable orientation. This call is > performed after reading new connector statatus, so the platform driver > can peek at new connection status bits. > > The callback is called both when registering the port and when the > connector change event is being handled. > > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> > --- > drivers/usb/typec/ucsi/ucsi.c | 6 ++++++ > drivers/usb/typec/ucsi/ucsi.h | 3 +++ > 2 files changed, 9 insertions(+) > > diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c > index 3106e69050cd..7ad544c968e4 100644 > --- a/drivers/usb/typec/ucsi/ucsi.c > +++ b/drivers/usb/typec/ucsi/ucsi.c > @@ -1199,6 +1199,9 @@ static void ucsi_handle_connector_change(struct work_struct *work) > > trace_ucsi_connector_change(con->num, &con->status); > > + if (ucsi->ops->connector_status) > + ucsi->ops->connector_status(con); > + > role = !!(con->status.flags & UCSI_CONSTAT_PWR_DIR); > > if (con->status.change & UCSI_CONSTAT_POWER_DIR_CHANGE) { > @@ -1588,6 +1591,9 @@ static int ucsi_register_port(struct ucsi *ucsi, struct ucsi_connector *con) > } > ret = 0; /* ucsi_send_command() returns length on success */ > > + if (ucsi->ops->connector_status) > + ucsi->ops->connector_status(con); > + > switch (UCSI_CONSTAT_PARTNER_TYPE(con->status.flags)) { > case UCSI_CONSTAT_PARTNER_TYPE_UFP: > case UCSI_CONSTAT_PARTNER_TYPE_CABLE_AND_UFP: > diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h > index 2caf2969668c..6599fbd09bee 100644 > --- a/drivers/usb/typec/ucsi/ucsi.h > +++ b/drivers/usb/typec/ucsi/ucsi.h > @@ -53,12 +53,14 @@ struct dentry; > #define UCSI_CCI_ERROR BIT(30) > #define UCSI_CCI_COMMAND_COMPLETE BIT(31) > > +struct ucsi_connector; Let's keep the forward declarations in one place. Please move that to the beginning of the file where the other forward declarations are. thanks, > /** > * struct ucsi_operations - UCSI I/O operations > * @read: Read operation > * @sync_write: Blocking write operation > * @async_write: Non-blocking write operation > * @update_altmodes: Squashes duplicate DP altmodes > + * @connector_status: Updates connector status, called holding connector lock > * > * Read and write routines for UCSI interface. @sync_write must wait for the > * Command Completion Event from the PPM before returning, and @async_write must > @@ -73,6 +75,7 @@ struct ucsi_operations { > const void *val, size_t val_len); > bool (*update_altmodes)(struct ucsi *ucsi, struct ucsi_altmode *orig, > struct ucsi_altmode *updated); > + void (*connector_status)(struct ucsi_connector *con); > }; > > struct ucsi *ucsi_create(struct device *dev, const struct ucsi_operations *ops);
diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 3106e69050cd..7ad544c968e4 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -1199,6 +1199,9 @@ static void ucsi_handle_connector_change(struct work_struct *work) trace_ucsi_connector_change(con->num, &con->status); + if (ucsi->ops->connector_status) + ucsi->ops->connector_status(con); + role = !!(con->status.flags & UCSI_CONSTAT_PWR_DIR); if (con->status.change & UCSI_CONSTAT_POWER_DIR_CHANGE) { @@ -1588,6 +1591,9 @@ static int ucsi_register_port(struct ucsi *ucsi, struct ucsi_connector *con) } ret = 0; /* ucsi_send_command() returns length on success */ + if (ucsi->ops->connector_status) + ucsi->ops->connector_status(con); + switch (UCSI_CONSTAT_PARTNER_TYPE(con->status.flags)) { case UCSI_CONSTAT_PARTNER_TYPE_UFP: case UCSI_CONSTAT_PARTNER_TYPE_CABLE_AND_UFP: diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h index 2caf2969668c..6599fbd09bee 100644 --- a/drivers/usb/typec/ucsi/ucsi.h +++ b/drivers/usb/typec/ucsi/ucsi.h @@ -53,12 +53,14 @@ struct dentry; #define UCSI_CCI_ERROR BIT(30) #define UCSI_CCI_COMMAND_COMPLETE BIT(31) +struct ucsi_connector; /** * struct ucsi_operations - UCSI I/O operations * @read: Read operation * @sync_write: Blocking write operation * @async_write: Non-blocking write operation * @update_altmodes: Squashes duplicate DP altmodes + * @connector_status: Updates connector status, called holding connector lock * * Read and write routines for UCSI interface. @sync_write must wait for the * Command Completion Event from the PPM before returning, and @async_write must @@ -73,6 +75,7 @@ struct ucsi_operations { const void *val, size_t val_len); bool (*update_altmodes)(struct ucsi *ucsi, struct ucsi_altmode *orig, struct ucsi_altmode *updated); + void (*connector_status)(struct ucsi_connector *con); }; struct ucsi *ucsi_create(struct device *dev, const struct ucsi_operations *ops);
Allow UCSI glue driver to perform addtional work to update connector status. For example, it might check the cable orientation. This call is performed after reading new connector statatus, so the platform driver can peek at new connection status bits. The callback is called both when registering the port and when the connector change event is being handled. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> --- drivers/usb/typec/ucsi/ucsi.c | 6 ++++++ drivers/usb/typec/ucsi/ucsi.h | 3 +++ 2 files changed, 9 insertions(+)