[PATCH v4 09/16] rpmsg: smd: add sendto and trysendto ops

[Arnaud Pouliquen]

Implement the sendto ops to support the future rpmsg_char update for the
vitio backend support.
The use of sendto in rpmsg_char is needed as a destination address is
requested at least by the virtio backend.
The SMD implementation does not need a destination address so ignores it.

Signed-off-by: Arnaud Pouliquen <arnaud.pouliq...@foss.st.com>
---
 drivers/rpmsg/qcom_smd.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c
index 40a1c415c775..2d279c03a090 100644
--- a/drivers/rpmsg/qcom_smd.c
+++ b/drivers/rpmsg/qcom_smd.c
@@ -974,6 +974,20 @@ static int qcom_smd_trysend(struct rpmsg_endpoint *ept, 
void *data, int len)
        return __qcom_smd_send(qsept->qsch, data, len, false);
 }
 
+static int qcom_smd_sendto(struct rpmsg_endpoint *ept, void *data, int len, 
u32 dst)
+{
+       struct qcom_smd_endpoint *qsept = to_smd_endpoint(ept);
+
+       return __qcom_smd_send(qsept->qsch, data, len, true);
+}
+
+static int qcom_smd_trysendto(struct rpmsg_endpoint *ept, void *data, int len, 
u32 dst)
+{
+       struct qcom_smd_endpoint *qsept = to_smd_endpoint(ept);
+
+       return __qcom_smd_send(qsept->qsch, data, len, false);
+}
+
 static __poll_t qcom_smd_poll(struct rpmsg_endpoint *ept,
                                  struct file *filp, poll_table *wait)
 {
@@ -1038,7 +1052,9 @@ static const struct rpmsg_device_ops qcom_smd_device_ops 
= {
 static const struct rpmsg_endpoint_ops qcom_smd_endpoint_ops = {
        .destroy_ept = qcom_smd_destroy_ept,
        .send = qcom_smd_send,
+       .sendto = qcom_smd_sendto,
        .trysend = qcom_smd_trysend,
+       .trysendto = qcom_smd_trysendto,
        .poll = qcom_smd_poll,
 };
 
-- 
2.17.1