4  * SPDX-License-Identifier: Apache-2.0
23 		return -EOPNOTSUPP;  in scmi_status_to_errno()
25 		return -EINVAL;  in scmi_status_to_errno()
27 		return -EACCES;  in scmi_status_to_errno()
29 		return -ENOENT;  in scmi_status_to_errno()
31 		return -ERANGE;  in scmi_status_to_errno()
34 		return -EBUSY;  in scmi_status_to_errno()
36 		return -EPROTO;  in scmi_status_to_errno()
41 		return -EIO;  in scmi_status_to_errno()
48 		k_sem_give(&chan->sem);  in scmi_core_reply_cb()
53 				struct scmi_channel *chan, bool tx)  in scmi_core_setup_chan()  argument
58 		return -EINVAL;  in scmi_core_setup_chan()
61 	if (chan->ready) {  in scmi_core_setup_chan()
66 	if (!tx) {  in scmi_core_setup_chan()
67 		return -ENOTSUP;  in scmi_core_setup_chan()
70 	k_mutex_init(&chan->lock);  in scmi_core_setup_chan()
71 	k_sem_init(&chan->sem, 0, 1);  in scmi_core_setup_chan()
73 	chan->cb = scmi_core_reply_cb;  in scmi_core_setup_chan()
75 	/* setup transport-related channel data */  in scmi_core_setup_chan()
76 	ret = scmi_transport_setup_chan(transport, chan, tx);  in scmi_core_setup_chan()
78 		LOG_ERR("failed to setup channel");  in scmi_core_setup_chan()
82 	/* protocols might share a channel. In such cases, this  in scmi_core_setup_chan()
85 	chan->ready = true;  in scmi_core_setup_chan()
96 	ret = scmi_transport_send_message(proto->transport, proto->tx, msg);  in scmi_send_message_pre_kernel()
103 	 * Cortex-M quirk: no interrupts at this point => no timer =>  in scmi_send_message_pre_kernel()
108 	while (!scmi_transport_channel_is_free(proto->transport, proto->tx)) {  in scmi_send_message_pre_kernel()
111 	ret = scmi_transport_read_message(proto->transport, proto->tx, reply);  in scmi_send_message_pre_kernel()
125 	if (!proto->tx) {  in scmi_send_message_post_kernel()
126 		return -ENODEV;  in scmi_send_message_post_kernel()
129 	/* wait for channel to be free */  in scmi_send_message_post_kernel()
130 	ret = k_mutex_lock(&proto->tx->lock, K_USEC(SCMI_CHAN_LOCK_TIMEOUT_USEC));  in scmi_send_message_post_kernel()
136 	ret = scmi_transport_send_message(proto->transport, proto->tx, msg);  in scmi_send_message_post_kernel()
143 	ret = k_sem_take(&proto->tx->sem, K_USEC(SCMI_CHAN_SEM_TIMEOUT_USEC));  in scmi_send_message_post_kernel()
149 	ret = scmi_transport_read_message(proto->transport, proto->tx, reply);  in scmi_send_message_post_kernel()
156 	k_mutex_unlock(&proto->tx->lock);  in scmi_send_message_post_kernel()
164 	if (!proto->tx) {  in scmi_send_message()
165 		return -ENODEV;  in scmi_send_message()
168 	if (!proto->tx->ready) {  in scmi_send_message()
169 		return -EINVAL;  in scmi_send_message()
184 		it->transport = transport;  in scmi_core_protocol_setup()
187 		/* no static channel allocation, attempt dynamic binding */  in scmi_core_protocol_setup()
188 		it->tx = scmi_transport_request_channel(transport, it->id, true);  in scmi_core_protocol_setup()
191 		if (!it->tx) {  in scmi_core_protocol_setup()
192 			return -ENODEV;  in scmi_core_protocol_setup()
195 		ret = scmi_core_setup_chan(transport, it->tx, true);  in scmi_core_protocol_setup()