diff options
Diffstat (limited to 'drivers/rpmsg/qcom_smd.c')
| -rw-r--r-- | drivers/rpmsg/qcom_smd.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c index 312cb7fec5b0..db5a6f82dd7c 100644 --- a/drivers/rpmsg/qcom_smd.c +++ b/drivers/rpmsg/qcom_smd.c @@ -923,6 +923,21 @@ static int qcom_smd_trysend(struct rpmsg_endpoint *ept, void *data, int len) return __qcom_smd_send(qsept->qsch, data, len, false); } +static unsigned int qcom_smd_poll(struct rpmsg_endpoint *ept, + struct file *filp, poll_table *wait) +{ + struct qcom_smd_endpoint *qsept = to_smd_endpoint(ept); + struct qcom_smd_channel *channel = qsept->qsch; + unsigned int mask = 0; + + poll_wait(filp, &channel->fblockread_event, wait); + + if (qcom_smd_get_tx_avail(channel) > 20) + mask |= POLLOUT | POLLWRNORM; + + return mask; +} + /* * Finds the device_node for the smd child interested in this channel. */ @@ -955,6 +970,7 @@ static const struct rpmsg_endpoint_ops qcom_smd_endpoint_ops = { .destroy_ept = qcom_smd_destroy_ept, .send = qcom_smd_send, .trysend = qcom_smd_trysend, + .poll = qcom_smd_poll, }; /* @@ -990,6 +1006,20 @@ static int qcom_smd_create_device(struct qcom_smd_channel *channel) return rpmsg_register_device(rpdev); } +static int qcom_smd_create_chrdev(struct qcom_smd_edge *edge) +{ + struct qcom_smd_device *qsdev; + + qsdev = kzalloc(sizeof(*qsdev), GFP_KERNEL); + if (!qsdev) + return -ENOMEM; + + qsdev->edge = edge; + qsdev->rpdev.ops = &qcom_smd_device_ops; + qsdev->rpdev.dev.parent = &edge->dev; + return rpmsg_chrdev_register_device(&qsdev->rpdev); +} + /* * Allocate the qcom_smd_channel object for a newly found smd channel, * retrieving and validating the smem items involved. @@ -1328,6 +1358,12 @@ struct qcom_smd_edge *qcom_smd_register_edge(struct device *parent, goto unregister_dev; } + ret = qcom_smd_create_chrdev(edge); + if (ret) { + dev_err(&edge->dev, "failed to register chrdev for edge\n"); + goto unregister_dev; + } + schedule_work(&edge->scan_work); return edge; |