[PATCH 2/2] platform/chrome: cros_ec_typec: Clear Type C disc events

[Prashant Malani]

Clear USB Type C discovery events from the Chrome EC once they've been
successfully handled.

Signed-off-by: Prashant Malani <pmal...@chromium.org>
---
 drivers/platform/chrome/cros_ec_typec.c | 28 +++++++++++++++++++++++--
 1 file changed, 26 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/chrome/cros_ec_typec.c 
b/drivers/platform/chrome/cros_ec_typec.c
index e724a5eaef1c..f3bdb87d6dce 100644
--- a/drivers/platform/chrome/cros_ec_typec.c
+++ b/drivers/platform/chrome/cros_ec_typec.c
@@ -867,6 +867,18 @@ static int cros_typec_handle_sop_disc(struct 
cros_typec_data *typec, int port_nu
        return ret;
 }
 
+static int cros_typec_send_clear_event(struct cros_typec_data *typec, int 
port_num, u32 events_mask)
+{
+       struct ec_params_typec_control req = {
+               .port = port_num,
+               .command = TYPEC_CONTROL_COMMAND_CLEAR_EVENTS,
+               .clear_events_mask = events_mask,
+       };
+
+       return cros_typec_ec_command(typec, 0, EC_CMD_TYPEC_CONTROL, &req,
+                                    sizeof(req), NULL, 0);
+}
+
 static void cros_typec_handle_status(struct cros_typec_data *typec, int 
port_num)
 {
        struct ec_response_typec_status resp;
@@ -887,8 +899,14 @@ static void cros_typec_handle_status(struct 
cros_typec_data *typec, int port_num
                ret = cros_typec_handle_sop_disc(typec, port_num);
                if (ret < 0)
                        dev_err(typec->dev, "Couldn't parse SOP Disc data, 
port: %d\n", port_num);
-               else
+               else {
                        typec->ports[port_num]->sop_disc_done = true;
+                       ret = cros_typec_send_clear_event(typec, port_num,
+                                                         
PD_STATUS_EVENT_SOP_DISC_DONE);
+                       if (ret < 0)
+                               dev_warn(typec->dev,
+                                        "Failed SOP Disc event clear, port: 
%d\n", port_num);
+               }
        }
 
        if (resp.events & PD_STATUS_EVENT_SOP_PRIME_DISC_DONE &&
@@ -896,8 +914,14 @@ static void cros_typec_handle_status(struct 
cros_typec_data *typec, int port_num
                ret = cros_typec_handle_sop_prime_disc(typec, port_num);
                if (ret < 0)
                        dev_err(typec->dev, "Couldn't parse SOP' Disc data, 
port: %d\n", port_num);
-               else
+               else {
                        typec->ports[port_num]->sop_prime_disc_done = true;
+                       ret = cros_typec_send_clear_event(typec, port_num,
+                                                         
PD_STATUS_EVENT_SOP_PRIME_DISC_DONE);
+                       if (ret < 0)
+                               dev_warn(typec->dev,
+                                        "Failed SOP Disc event clear, port: 
%d\n", port_num);
+               }
        }
 }
 
-- 
2.30.0.365.g02bc693789-goog