1 // SPDX-License-Identifier: GPL-2.0-only
11 	/* Lower level is a rpmsg dev, upper level is a wwan port */
25 		return -ENOMEM;  in rpmsg_wwan_ctrl_callback()
28 	wwan_port_rx(rpwwan->wwan_port, skb);  in rpmsg_wwan_ctrl_callback()
32 static int rpmsg_wwan_ctrl_start(struct wwan_port *port)  in rpmsg_wwan_ctrl_start()  argument
34 	struct rpmsg_wwan_dev *rpwwan = wwan_port_get_drvdata(port);  in rpmsg_wwan_ctrl_start()
36 		.src = rpwwan->rpdev->src,  in rpmsg_wwan_ctrl_start()
40 	strscpy(chinfo.name, rpwwan->rpdev->id.name, sizeof(chinfo.name));  in rpmsg_wwan_ctrl_start()
41 	rpwwan->ept = rpmsg_create_ept(rpwwan->rpdev, rpmsg_wwan_ctrl_callback,  in rpmsg_wwan_ctrl_start()
43 	if (!rpwwan->ept)  in rpmsg_wwan_ctrl_start()
44 		return -EREMOTEIO;  in rpmsg_wwan_ctrl_start()
49 static void rpmsg_wwan_ctrl_stop(struct wwan_port *port)  in rpmsg_wwan_ctrl_stop()  argument
51 	struct rpmsg_wwan_dev *rpwwan = wwan_port_get_drvdata(port);  in rpmsg_wwan_ctrl_stop()
53 	rpmsg_destroy_ept(rpwwan->ept);  in rpmsg_wwan_ctrl_stop()
54 	rpwwan->ept = NULL;  in rpmsg_wwan_ctrl_stop()
57 static int rpmsg_wwan_ctrl_tx(struct wwan_port *port, struct sk_buff *skb)  in rpmsg_wwan_ctrl_tx()  argument
59 	struct rpmsg_wwan_dev *rpwwan = wwan_port_get_drvdata(port);  in rpmsg_wwan_ctrl_tx()
62 	ret = rpmsg_trysend(rpwwan->ept, skb->data, skb->len);  in rpmsg_wwan_ctrl_tx()
70 static int rpmsg_wwan_ctrl_tx_blocking(struct wwan_port *port, struct sk_buff *skb)  in rpmsg_wwan_ctrl_tx_blocking()  argument
72 	struct rpmsg_wwan_dev *rpwwan = wwan_port_get_drvdata(port);  in rpmsg_wwan_ctrl_tx_blocking()
75 	ret = rpmsg_send(rpwwan->ept, skb->data, skb->len);  in rpmsg_wwan_ctrl_tx_blocking()
83 static __poll_t rpmsg_wwan_ctrl_tx_poll(struct wwan_port *port,  in rpmsg_wwan_ctrl_tx_poll()  argument
86 	struct rpmsg_wwan_dev *rpwwan = wwan_port_get_drvdata(port);  in rpmsg_wwan_ctrl_tx_poll()
88 	return rpmsg_poll(rpwwan->ept, filp, wait);  in rpmsg_wwan_ctrl_tx_poll()
106 	for (dev = dev->parent; dev; dev = dev->parent) {  in rpmsg_wwan_find_parent()
116 	struct wwan_port *port;  in rpmsg_wwan_ctrl_probe()  local
119 	parent = rpmsg_wwan_find_parent(&rpdev->dev);  in rpmsg_wwan_ctrl_probe()
121 		return -ENODEV;  in rpmsg_wwan_ctrl_probe()
123 	rpwwan = devm_kzalloc(&rpdev->dev, sizeof(*rpwwan), GFP_KERNEL);  in rpmsg_wwan_ctrl_probe()
125 		return -ENOMEM;  in rpmsg_wwan_ctrl_probe()
127 	rpwwan->rpdev = rpdev;  in rpmsg_wwan_ctrl_probe()
128 	dev_set_drvdata(&rpdev->dev, rpwwan);  in rpmsg_wwan_ctrl_probe()
130 	/* Register as a wwan port, id.driver_data contains wwan port type */  in rpmsg_wwan_ctrl_probe()
131 	port = wwan_create_port(parent, rpdev->id.driver_data,  in rpmsg_wwan_ctrl_probe()
133 	if (IS_ERR(port))  in rpmsg_wwan_ctrl_probe()
134 		return PTR_ERR(port);  in rpmsg_wwan_ctrl_probe()
136 	rpwwan->wwan_port = port;  in rpmsg_wwan_ctrl_probe()
143 	struct rpmsg_wwan_dev *rpwwan = dev_get_drvdata(&rpdev->dev);  in rpmsg_wwan_ctrl_remove()
145 	wwan_remove_port(rpwwan->wwan_port);  in rpmsg_wwan_ctrl_remove()