Update the EC command header to include the new event bit. This bit
is included in the latest version of the Chrome EC headers[1].
[1] https://chromium.googlesource.com/chromiumos/platform/ec/+/refs/heads/main/include/ec_commands.h
Signed-off-by: Prashant Malani <[email protected]>
---
Changes in v3:
- Remove Change-Id tag and add Signed-off-by tag to the commit message.
v2 is the first version the patch was introduced.
include/linux/platform_data/cros_ec_commands.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/linux/platform_data/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h
index 5ff8597ceabd..9156078c6fc6 100644
--- a/include/linux/platform_data/cros_ec_commands.h
+++ b/include/linux/platform_data/cros_ec_commands.h
@@ -5678,6 +5678,7 @@ enum tcpc_cc_polarity {
#define PD_STATUS_EVENT_SOP_DISC_DONE BIT(0)
#define PD_STATUS_EVENT_SOP_PRIME_DISC_DONE BIT(1)
+#define PD_STATUS_EVENT_HARD_RESET BIT(2)
struct ec_params_typec_status {
uint8_t port;
--
2.31.1.368.gbe11c130af-goog
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 <[email protected]>
Signed-off-by: Prashant Malani <[email protected]>
---
Changes in v3:
- No changes.
Changes in v2:
- Split the header change into a separate patch.
- Updated the commit message to reflect the above.
v1:
https://lore.kernel.org/lkml/[email protected]/
drivers/platform/chrome/cros_ec_typec.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c
index d3df1717a5fd..22052f569f2a 100644
--- a/drivers/platform/chrome/cros_ec_typec.c
+++ b/drivers/platform/chrome/cros_ec_typec.c
@@ -905,6 +905,19 @@ 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;
--
2.31.1.368.gbe11c130af-goog
On Tue, 20 Apr 2021 10:16:11 -0700, Prashant Malani wrote:
> Update the EC command header to include the new event bit. This bit
> is included in the latest version of the Chrome EC headers[1].
>
> [1] https://chromium.googlesource.com/chromiumos/platform/ec/+/refs/heads/main/include/ec_commands.h
Applied, thanks!
[1/2] platform/chrome: cros_ec: Add Type C hard reset
commit: 67880f1bc342ed4c94e72cad7f8ca76e5121aae3
[2/2] platform/chrome: cros_ec_typec: Handle hard reset
commit: 944b3a639573796debe3cd47298a5dd79810be73
Best regards,
--
Enric Balletbo i Serra <[email protected]>