int (*probe)(struct qcom_smd_device *dev);
void (*remove)(struct qcom_smd_device *dev);
- int (*callback)(struct qcom_smd_device *, const void *, size_t);
+ qcom_smd_cb_t callback;
};
+#if IS_ENABLED(CONFIG_QCOM_SMD)
+
int qcom_smd_driver_register(struct qcom_smd_driver *drv);
void qcom_smd_driver_unregister(struct qcom_smd_driver *drv);
++struct qcom_smd_channel *qcom_smd_open_channel(struct qcom_smd_channel *channel,
++ const char *name,
++ qcom_smd_cb_t cb);
+ void *qcom_smd_get_drvdata(struct qcom_smd_channel *channel);
+ void qcom_smd_set_drvdata(struct qcom_smd_channel *channel, void *data);
+int qcom_smd_send(struct qcom_smd_channel *channel, const void *data, int len);
+
++
+#else
+
+static inline int qcom_smd_driver_register(struct qcom_smd_driver *drv)
+{
+ return -ENXIO;
+}
+
+static inline void qcom_smd_driver_unregister(struct qcom_smd_driver *drv)
+{
+ /* This shouldn't be possible */
+ WARN_ON(1);
+}
+
++static inline struct qcom_smd_channel *
++qcom_smd_open_channel(struct qcom_smd_channel *channel,
++ const char *name,
++ qcom_smd_cb_t cb)
++{
++ /* This shouldn't be possible */
++ WARN_ON(1);
++ return NULL;
++}
++
++void *qcom_smd_get_drvdata(struct qcom_smd_channel *channel)
++{
++ /* This shouldn't be possible */
++ WARN_ON(1);
++ return NULL;
++}
++
++void qcom_smd_set_drvdata(struct qcom_smd_channel *channel, void *data)
++{
++ /* This shouldn't be possible */
++ WARN_ON(1);
++}
++
+static inline int qcom_smd_send(struct qcom_smd_channel *channel,
+ const void *data, int len)
+{
+ /* This shouldn't be possible */
+ WARN_ON(1);
+ return -ENXIO;
+}
+
+#endif
#define module_qcom_smd_driver(__smd_driver) \
module_driver(__smd_driver, qcom_smd_driver_register, \
--- /dev/null
- static int qcom_smd_qrtr_callback(struct qcom_smd_device *sdev,
+/*
+ * Copyright (c) 2015, Sony Mobile Communications Inc.
+ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/skbuff.h>
+#include <linux/soc/qcom/smd.h>
+
+#include "qrtr.h"
+
+struct qrtr_smd_dev {
+ struct qrtr_endpoint ep;
+ struct qcom_smd_channel *channel;
++ struct device *dev;
+};
+
+/* from smd to qrtr */
- struct qrtr_smd_dev *qdev = dev_get_drvdata(&sdev->dev);
++static int qcom_smd_qrtr_callback(struct qcom_smd_channel *channel,
+ const void *data, size_t len)
+{
- dev_err(&sdev->dev, "invalid ipcrouter packet\n");
++ struct qrtr_smd_dev *qdev = qcom_smd_get_drvdata(channel);
+ int rc;
+
+ if (!qdev)
+ return -EAGAIN;
+
+ rc = qrtr_endpoint_post(&qdev->ep, data, len);
+ if (rc == -EINVAL) {
++ dev_err(qdev->dev, "invalid ipcrouter packet\n");
+ /* return 0 to let smd drop the packet */
+ rc = 0;
+ }
+
+ return rc;
+}
+
+/* from qrtr to smd */
+static int qcom_smd_qrtr_send(struct qrtr_endpoint *ep, struct sk_buff *skb)
+{
+ struct qrtr_smd_dev *qdev = container_of(ep, struct qrtr_smd_dev, ep);
+ int rc;
+
+ rc = skb_linearize(skb);
+ if (rc)
+ goto out;
+
+ rc = qcom_smd_send(qdev->channel, skb->data, skb->len);
+
+out:
+ if (rc)
+ kfree_skb(skb);
+ else
+ consume_skb(skb);
+ return rc;
+}
+
+static int qcom_smd_qrtr_probe(struct qcom_smd_device *sdev)
+{
+ struct qrtr_smd_dev *qdev;
+ int rc;
+
+ qdev = devm_kzalloc(&sdev->dev, sizeof(*qdev), GFP_KERNEL);
+ if (!qdev)
+ return -ENOMEM;
+
+ qdev->channel = sdev->channel;
++ qdev->dev = &sdev->dev;
+ qdev->ep.xmit = qcom_smd_qrtr_send;
+
+ rc = qrtr_endpoint_register(&qdev->ep, QRTR_EP_NID_AUTO);
+ if (rc)
+ return rc;
+
++ qcom_smd_set_drvdata(sdev->channel, qdev);
+ dev_set_drvdata(&sdev->dev, qdev);
+
+ dev_dbg(&sdev->dev, "Qualcomm SMD QRTR driver probed\n");
+
+ return 0;
+}
+
+static void qcom_smd_qrtr_remove(struct qcom_smd_device *sdev)
+{
+ struct qrtr_smd_dev *qdev = dev_get_drvdata(&sdev->dev);
+
+ qrtr_endpoint_unregister(&qdev->ep);
+
+ dev_set_drvdata(&sdev->dev, NULL);
+}
+
+static const struct qcom_smd_id qcom_smd_qrtr_smd_match[] = {
+ { "IPCRTR" },
+ {}
+};
+
+static struct qcom_smd_driver qcom_smd_qrtr_driver = {
+ .probe = qcom_smd_qrtr_probe,
+ .remove = qcom_smd_qrtr_remove,
+ .callback = qcom_smd_qrtr_callback,
+ .smd_match_table = qcom_smd_qrtr_smd_match,
+ .driver = {
+ .name = "qcom_smd_qrtr",
+ .owner = THIS_MODULE,
+ },
+};
+
+module_qcom_smd_driver(qcom_smd_qrtr_driver);
+
+MODULE_DESCRIPTION("Qualcomm IPC-Router SMD interface driver");
+MODULE_LICENSE("GPL v2");