4  * SPDX-License-Identifier: GPL-2.0
10 #include <mailbox-uclass.h>
16 	return (struct mbox_ops *)dev->driver->ops;  in mbox_dev_ops()
19 static int mbox_of_xlate_default(struct mbox_chan *chan,  in mbox_of_xlate_default()  argument
22 	debug("%s(chan=%p)\n", __func__, chan);  in mbox_of_xlate_default()
24 	if (args->args_count != 1) {  in mbox_of_xlate_default()
25 		debug("Invaild args_count: %d\n", args->args_count);  in mbox_of_xlate_default()
26 		return -EINVAL;  in mbox_of_xlate_default()
29 	chan->id = args->args[0];  in mbox_of_xlate_default()
34 int mbox_get_by_index(struct udevice *dev, int index, struct mbox_chan *chan)  in mbox_get_by_index()  argument
41 	debug("%s(dev=%p, index=%d, chan=%p)\n", __func__, dev, index, chan);  in mbox_get_by_index()
43 	ret = dev_read_phandle_with_args(dev, "mboxes", "#mbox-cells", 0, index,  in mbox_get_by_index()
59 	chan->dev = dev_mbox;  in mbox_get_by_index()
60 	if (ops->of_xlate)  in mbox_get_by_index()
61 		ret = ops->of_xlate(chan, &args);  in mbox_get_by_index()
63 		ret = mbox_of_xlate_default(chan, &args);  in mbox_get_by_index()
69 	ret = ops->request(chan);  in mbox_get_by_index()
71 		debug("ops->request() failed: %d\n", ret);  in mbox_get_by_index()
78 int mbox_get_by_name(struct udevice *dev, const char *name,  in mbox_get_by_name()  argument
79 		     struct mbox_chan *chan)  in mbox_get_by_name()  argument
83 	debug("%s(dev=%p, name=%s, chan=%p)\n", __func__, dev, name, chan);  in mbox_get_by_name()
85 	index = dev_read_stringlist_search(dev, "mbox-names", name);  in mbox_get_by_name()
91 	return mbox_get_by_index(dev, index, chan);  in mbox_get_by_name()
94 int mbox_free(struct mbox_chan *chan)  in mbox_free()  argument
96 	struct mbox_ops *ops = mbox_dev_ops(chan->dev);  in mbox_free()
98 	debug("%s(chan=%p)\n", __func__, chan);  in mbox_free()
100 	return ops->free(chan);  in mbox_free()
103 int mbox_send(struct mbox_chan *chan, const void *data)  in mbox_send()  argument
105 	struct mbox_ops *ops = mbox_dev_ops(chan->dev);  in mbox_send()
107 	debug("%s(chan=%p, data=%p)\n", __func__, chan, data);  in mbox_send()
109 	return ops->send(chan, data);  in mbox_send()
112 int mbox_recv(struct mbox_chan *chan, void *data, ulong timeout_us)  in mbox_recv()  argument
114 	struct mbox_ops *ops = mbox_dev_ops(chan->dev);  in mbox_recv()
118 	debug("%s(chan=%p, data=%p, timeout_us=%ld)\n", __func__, chan, data,  in mbox_recv()
130 		ret = ops->recv(chan, data);  in mbox_recv()
131 		if (ret != -ENODATA)  in mbox_recv()
133 		if ((timer_get_us() - start_time) >= timeout_us)  in mbox_recv()
134 			return -ETIMEDOUT;  in mbox_recv()
140 	.name		= "mailbox",