2 * Copyright (c) 2015, Sony Mobile Communications Inc.
3 * Copyright (c) 2013, The Linux Foundation. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 and
7 * only version 2 as published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
15 #include <linux/module.h>
16 #include <linux/skbuff.h>
17 #include <linux/soc/qcom/smd.h>
22 struct qrtr_endpoint ep;
23 struct qcom_smd_channel *channel;
27 /* from smd to qrtr */
28 static int qcom_smd_qrtr_callback(struct qcom_smd_channel *channel,
29 const void *data, size_t len)
31 struct qrtr_smd_dev *qdev = qcom_smd_get_drvdata(channel);
37 rc = qrtr_endpoint_post(&qdev->ep, data, len);
39 dev_err(qdev->dev, "invalid ipcrouter packet\n");
40 /* return 0 to let smd drop the packet */
47 /* from qrtr to smd */
48 static int qcom_smd_qrtr_send(struct qrtr_endpoint *ep, struct sk_buff *skb)
50 struct qrtr_smd_dev *qdev = container_of(ep, struct qrtr_smd_dev, ep);
53 rc = skb_linearize(skb);
57 rc = qcom_smd_send(qdev->channel, skb->data, skb->len);
67 static int qcom_smd_qrtr_probe(struct qcom_smd_device *sdev)
69 struct qrtr_smd_dev *qdev;
72 qdev = devm_kzalloc(&sdev->dev, sizeof(*qdev), GFP_KERNEL);
76 qdev->channel = sdev->channel;
77 qdev->dev = &sdev->dev;
78 qdev->ep.xmit = qcom_smd_qrtr_send;
80 rc = qrtr_endpoint_register(&qdev->ep, QRTR_EP_NID_AUTO);
84 qcom_smd_set_drvdata(sdev->channel, qdev);
85 dev_set_drvdata(&sdev->dev, qdev);
87 dev_dbg(&sdev->dev, "Qualcomm SMD QRTR driver probed\n");
92 static void qcom_smd_qrtr_remove(struct qcom_smd_device *sdev)
94 struct qrtr_smd_dev *qdev = dev_get_drvdata(&sdev->dev);
96 qrtr_endpoint_unregister(&qdev->ep);
98 dev_set_drvdata(&sdev->dev, NULL);
101 static const struct qcom_smd_id qcom_smd_qrtr_smd_match[] = {
106 static struct qcom_smd_driver qcom_smd_qrtr_driver = {
107 .probe = qcom_smd_qrtr_probe,
108 .remove = qcom_smd_qrtr_remove,
109 .callback = qcom_smd_qrtr_callback,
110 .smd_match_table = qcom_smd_qrtr_smd_match,
112 .name = "qcom_smd_qrtr",
113 .owner = THIS_MODULE,
117 module_qcom_smd_driver(qcom_smd_qrtr_driver);
119 MODULE_ALIAS("rpmsg:IPCRTR");
120 MODULE_DESCRIPTION("Qualcomm IPC-Router SMD interface driver");
121 MODULE_LICENSE("GPL v2");