diff options
| author |   Prashant Malani <pmalani@chromium.org> | 2021-04-20 10:16:13 -0700 |
|---|---|---|
| committer |   Enric Balletbo i Serra <enric.balletbo@collabora.com> | 2021-04-20 19:35:42 +0200 |
| commit | 944b3a639573796debe3cd47298a5dd79810be73 (patch) | |
| tree | 703048dac0910ad9454b40e9d5c595d864ed7ffe /drivers/platform/chrome | |
| parent | platform/chrome: cros_ec: Add Type C hard reset (diff) | |
| download | linux-dev-944b3a639573796debe3cd47298a5dd79810be73.tar.xz linux-dev-944b3a639573796debe3cd47298a5dd79810be73.zip | |
platform/chrome: cros_ec_typec: Handle hard reset
The Chrome Embedded Controller (EC) generates a hard reset type C event
when a USB Power Delivery (PD) hard reset is encountered. Handle this
event by unregistering the partner and cable on the associated port and
clearing the event flag.
Cc: Benson Leung <bleung@chromium.org>
Signed-off-by: Prashant Malani <pmalani@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20210420171617.3830902-2-pmalani@chromium.org
Diffstat (limited to 'drivers/platform/chrome')
| -rw-r--r-- | drivers/platform/chrome/cros_ec_typec.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c index 1a06b8c80f80..60c21911a6c8 100644 --- a/drivers/platform/chrome/cros_ec_typec.c +++ b/drivers/platform/chrome/cros_ec_typec.c @@ -906,6 +906,19 @@ static void cros_typec_handle_status(struct cros_typec_data *typec, int port_num return; } + /* If we got a hard reset, unregister everything and return. */ + if (resp.events & PD_STATUS_EVENT_HARD_RESET) { + cros_typec_remove_partner(typec, port_num); + cros_typec_remove_cable(typec, port_num); + + ret = cros_typec_send_clear_event(typec, port_num, + PD_STATUS_EVENT_HARD_RESET); + if (ret < 0) + dev_warn(typec->dev, + "Failed hard reset event clear, port: %d\n", port_num); + return; + } + /* Handle any events appropriately. */ if (resp.events & PD_STATUS_EVENT_SOP_DISC_DONE && !typec->ports[port_num]->sop_disc_done) { u16 sop_revision; |