greybus: es2: implement shutdown callback
Implement the shutdown callback which is used to execute shutdown
operations on offloaded connections.
This adds a new shutdown ARPC.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
diff --git a/drivers/staging/greybus/es2.c b/drivers/staging/greybus/es2.c
index 1817c35..123dc9d 100644
--- a/drivers/staging/greybus/es2.c
+++ b/drivers/staging/greybus/es2.c
@@ -783,6 +783,32 @@
return 0;
}
+static int es2_cport_shutdown(struct gb_host_device *hd, u16 cport_id,
+ u8 phase, unsigned int timeout)
+{
+ struct es2_ap_dev *es2 = hd_to_es2(hd);
+ struct device *dev = &es2->usb_dev->dev;
+ struct arpc_cport_shutdown_req req;
+ int result;
+ int ret;
+
+ if (timeout > U16_MAX)
+ return -EINVAL;
+
+ req.cport_id = cpu_to_le16(cport_id);
+ req.timeout = cpu_to_le16(timeout);
+ req.phase = phase;
+ ret = arpc_sync(es2, ARPC_TYPE_CPORT_SHUTDOWN, &req, sizeof(req),
+ &result, ES2_ARPC_CPORT_TIMEOUT + timeout);
+ if (ret) {
+ dev_err(dev, "failed to send shutdown over cport %u: %d (%d)\n",
+ cport_id, ret, result);
+ return ret;
+ }
+
+ return 0;
+}
+
static int es2_cport_quiesce(struct gb_host_device *hd, u16 cport_id,
size_t peer_space, unsigned int timeout)
{
@@ -1016,6 +1042,7 @@
.cport_disable = cport_disable,
.cport_connected = es2_cport_connected,
.cport_flush = es2_cport_flush,
+ .cport_shutdown = es2_cport_shutdown,
.cport_quiesce = es2_cport_quiesce,
.cport_clear = es2_cport_clear,
.latency_tag_enable = latency_tag_enable,
