27 	struct imx_sc_ipc *sc_ipc;  member
116 	struct imx_sc_ipc *sc_ipc = sc_chan->sc_ipc;  in imx_scu_rx_callback()  local
121 	if (!sc_ipc->msg) {  in imx_scu_rx_callback()
122 		dev_warn(sc_ipc->dev, "unexpected rx idx %d 0x%08x, ignore!\n",  in imx_scu_rx_callback()
127 	if (sc_ipc->fast_ipc) {  in imx_scu_rx_callback()
129 		sc_ipc->rx_size = hdr->size;  in imx_scu_rx_callback()
130 		sc_ipc->msg[0] = *data++;  in imx_scu_rx_callback()
132 		for (i = 1; i < sc_ipc->rx_size; i++)  in imx_scu_rx_callback()
133 			sc_ipc->msg[i] = *data++;  in imx_scu_rx_callback()
135 		complete(&sc_ipc->done);  in imx_scu_rx_callback()
142 		sc_ipc->rx_size = hdr->size;  in imx_scu_rx_callback()
143 		dev_dbg(sc_ipc->dev, "msg rx size %u\n", sc_ipc->rx_size);  in imx_scu_rx_callback()
144 		if (sc_ipc->rx_size > 4)  in imx_scu_rx_callback()
145 			dev_warn(sc_ipc->dev, "RPC does not support receiving over 4 words: %u\n",  in imx_scu_rx_callback()
146 				 sc_ipc->rx_size);  in imx_scu_rx_callback()
149 	sc_ipc->msg[sc_chan->idx] = *data;  in imx_scu_rx_callback()
150 	sc_ipc->count++;  in imx_scu_rx_callback()
152 	dev_dbg(sc_ipc->dev, "mu %u msg %u 0x%x\n", sc_chan->idx,  in imx_scu_rx_callback()
153 		sc_ipc->count, *data);  in imx_scu_rx_callback()
155 	if ((sc_ipc->rx_size != 0) && (sc_ipc->count == sc_ipc->rx_size))  in imx_scu_rx_callback()
156 		complete(&sc_ipc->done);  in imx_scu_rx_callback()
159 static int imx_scu_ipc_write(struct imx_sc_ipc *sc_ipc, void *msg)  in imx_scu_ipc_write()  argument
172 	dev_dbg(sc_ipc->dev, "RPC SVC %u FUNC %u SIZE %u\n", hdr.svc,  in imx_scu_ipc_write()
175 	size = sc_ipc->fast_ipc ? 1 : hdr.size;  in imx_scu_ipc_write()
177 		sc_chan = &sc_ipc->chans[i % 4];  in imx_scu_ipc_write()
188 		if (!sc_ipc->fast_ipc) {  in imx_scu_ipc_write()
204 int imx_scu_call_rpc(struct imx_sc_ipc *sc_ipc, void *msg, bool have_resp)  in imx_scu_call_rpc()  argument
210 	if (WARN_ON(!sc_ipc || !msg))  in imx_scu_call_rpc()
213 	mutex_lock(&sc_ipc->lock);  in imx_scu_call_rpc()
214 	reinit_completion(&sc_ipc->done);  in imx_scu_call_rpc()
217 		sc_ipc->msg = msg;  in imx_scu_call_rpc()
221 	sc_ipc->count = 0;  in imx_scu_call_rpc()
222 	ret = imx_scu_ipc_write(sc_ipc, msg);  in imx_scu_call_rpc()
224 		dev_err(sc_ipc->dev, "RPC send msg failed: %d\n", ret);  in imx_scu_call_rpc()
229 		if (!wait_for_completion_timeout(&sc_ipc->done,  in imx_scu_call_rpc()
231 			dev_err(sc_ipc->dev, "RPC send msg timeout\n");  in imx_scu_call_rpc()
232 			mutex_unlock(&sc_ipc->lock);  in imx_scu_call_rpc()
252 	sc_ipc->msg = NULL;  in imx_scu_call_rpc()
253 	mutex_unlock(&sc_ipc->lock);  in imx_scu_call_rpc()
255 	dev_dbg(sc_ipc->dev, "RPC SVC done\n");  in imx_scu_call_rpc()
264 	struct imx_sc_ipc *sc_ipc;  in imx_scu_probe()  local
273 	sc_ipc = devm_kzalloc(dev, sizeof(*sc_ipc), GFP_KERNEL);  in imx_scu_probe()
274 	if (!sc_ipc)  in imx_scu_probe()
282 	sc_ipc->fast_ipc = of_device_is_compatible(args.np, "fsl,imx8-mu-scu");  in imx_scu_probe()
284 	num_channel = sc_ipc->fast_ipc ? 2 : SCU_MU_CHAN_NUM;  in imx_scu_probe()
295 		sc_chan = &sc_ipc->chans[i];  in imx_scu_probe()
302 		if (!sc_ipc->fast_ipc) {  in imx_scu_probe()
309 		sc_chan->sc_ipc = sc_ipc;  in imx_scu_probe()
325 	sc_ipc->dev = dev;  in imx_scu_probe()
326 	mutex_init(&sc_ipc->lock);  in imx_scu_probe()
327 	init_completion(&sc_ipc->done);  in imx_scu_probe()
329 	imx_sc_ipc_handle = sc_ipc;  in imx_scu_probe()