1 // SPDX-License-Identifier: GPL-2.0
4  * Author: Allen-KH Cheng <allen-[email protected]>
7 #include <linux/firmware/mediatek/mtk-adsp-ipc.h>
17  * mtk_adsp_ipc_send - send ipc cmd to MTK ADSP
19  * @ipc: ADSP IPC handle
21  * @msg: IPC cmd (reply or request)
26 int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx, uint32_t msg)  in mtk_adsp_ipc_send()  argument
32 		return -EINVAL;  in mtk_adsp_ipc_send()
34 	adsp_chan = &ipc->chans[idx];  in mtk_adsp_ipc_send()
35 	ret = mbox_send_message(adsp_chan->ch, &msg);  in mtk_adsp_ipc_send()
44  * mtk_adsp_ipc_recv - recv callback used by MTK ADSP mailbox
49  * Users of ADSP IPC will need to privde handle_reply and handle_request
55 	struct device *dev = c->dev;  in mtk_adsp_ipc_recv()
57 	switch (chan->idx) {  in mtk_adsp_ipc_recv()
59 		chan->ipc->ops->handle_reply(chan->ipc);  in mtk_adsp_ipc_recv()
62 		chan->ipc->ops->handle_request(chan->ipc);  in mtk_adsp_ipc_recv()
65 		dev_err(dev, "wrong mbox chan %d\n", chan->idx);  in mtk_adsp_ipc_recv()
72 	struct device *dev = &pdev->dev;  in mtk_adsp_ipc_probe()
79 	device_set_of_node_from_dev(&pdev->dev, pdev->dev.parent);  in mtk_adsp_ipc_probe()
83 		return -ENOMEM;  in mtk_adsp_ipc_probe()
86 		adsp_chan = &adsp_ipc->chans[i];  in mtk_adsp_ipc_probe()
87 		cl = &adsp_chan->cl;  in mtk_adsp_ipc_probe()
88 		cl->dev = dev->parent;  in mtk_adsp_ipc_probe()
89 		cl->tx_block = false;  in mtk_adsp_ipc_probe()
90 		cl->knows_txdone = false;  in mtk_adsp_ipc_probe()
91 		cl->tx_prepare = NULL;  in mtk_adsp_ipc_probe()
92 		cl->rx_callback = mtk_adsp_ipc_recv;  in mtk_adsp_ipc_probe()
94 		adsp_chan->ipc = adsp_ipc;  in mtk_adsp_ipc_probe()
95 		adsp_chan->idx = i;  in mtk_adsp_ipc_probe()
96 		adsp_chan->ch = mbox_request_channel_byname(cl, adsp_mbox_ch_names[i]);  in mtk_adsp_ipc_probe()
97 		if (IS_ERR(adsp_chan->ch)) {  in mtk_adsp_ipc_probe()
98 			ret = dev_err_probe(dev, PTR_ERR(adsp_chan->ch),  in mtk_adsp_ipc_probe()
103 				adsp_chan = &adsp_ipc->chans[j];  in mtk_adsp_ipc_probe()
104 				mbox_free_channel(adsp_chan->ch);  in mtk_adsp_ipc_probe()
111 	adsp_ipc->dev = dev;  in mtk_adsp_ipc_probe()
113 	dev_dbg(dev, "MTK ADSP IPC initialized\n");  in mtk_adsp_ipc_probe()
120 	struct mtk_adsp_ipc *adsp_ipc = dev_get_drvdata(&pdev->dev);  in mtk_adsp_ipc_remove()
125 		adsp_chan = &adsp_ipc->chans[i];  in mtk_adsp_ipc_remove()
126 		mbox_free_channel(adsp_chan->ch);  in mtk_adsp_ipc_remove()
132 		.name = "mtk-adsp-ipc",
139 MODULE_AUTHOR("Allen-KH Cheng <allen-[email protected]>");
140 MODULE_DESCRIPTION("MTK ADSP IPC Driver");