github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-22 22:22:08 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

usb: typec: ucsi: add callback for connector status updates

Browse Source 
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>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240411-ucsi-orient-aware-v2-1-d4b1cb22a33f@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dmitry Baryshkov 2024-04-11 07:49:53 +03:00 committed by Greg Kroah-Hartman
parent 0a723ed3ba
commit 24bce22d09
2 changed files with 9 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/usb/typec/ucsi/ucsi.c
View File

@ -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) {
@ -1590,6 +1593,9 @@ 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:

3
drivers/usb/typec/ucsi/ucsi.h
View File

@ -16,6 +16,7 @@
struct ucsi;
struct ucsi_altmode;
struct ucsi_connector;
struct dentry;
/* UCSI offsets (Bytes) */
@ -59,6 +60,7 @@ struct dentry;
* @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);