55  * The Presence rate of a constant bitrate stream is mean flow rate of the
56  * stream expressed in occupied Segments of that Data Channel per second.
90  * slim_stream_allocate() - Allocate a new SLIMbus Stream
92  * @name: name of the stream
95  * a new SLIMbus stream and return a valid stream runtime pointer for client
96  * to use it in subsequent stream apis. state of stream is set to ALLOCATED
125 static int slim_connect_port_channel(struct slim_stream_runtime *stream,  in slim_connect_port_channel()  argument
128 	struct slim_device *sdev = stream->dev;  in slim_connect_port_channel()
132 	DEFINE_SLIM_LDEST_TXN(txn, mc, 6, stream->dev->laddr, &msg);  in slim_connect_port_channel()
145 static int slim_disconnect_port(struct slim_stream_runtime *stream,  in slim_disconnect_port()  argument
148 	struct slim_device *sdev = stream->dev;  in slim_disconnect_port()
152 	DEFINE_SLIM_LDEST_TXN(txn, mc, 5, stream->dev->laddr, &msg);  in slim_disconnect_port()
161 static int slim_deactivate_remove_channel(struct slim_stream_runtime *stream,  in slim_deactivate_remove_channel()  argument
164 	struct slim_device *sdev = stream->dev;  in slim_deactivate_remove_channel()
168 	DEFINE_SLIM_LDEST_TXN(txn, mc, 5, stream->dev->laddr, &msg);  in slim_deactivate_remove_channel()
195  * slim_stream_prepare() - Prepare a SLIMbus Stream
197  * @rt: instance of slim stream runtime to configure
198  * @cfg: new configuration for the stream
200  * This API will configure SLIMbus stream with config parameters from cfg.
212 		dev_err(&rt->dev->dev, "Stream already Prepared\n");  in slim_stream_prepare()
272 static int slim_define_channel_content(struct slim_stream_runtime *stream,  in slim_define_channel_content()  argument
275 	struct slim_device *sdev = stream->dev;  in slim_define_channel_content()
279 	DEFINE_SLIM_LDEST_TXN(txn, mc, 8, stream->dev->laddr, &msg);  in slim_define_channel_content()
285 	if (stream->prot != SLIM_PROTO_ISO)  in slim_define_channel_content()
289 	wbuf[3] = stream->bps/SLIM_SLOT_LEN_BITS;  in slim_define_channel_content()
307 static int slim_define_channel(struct slim_stream_runtime *stream,  in slim_define_channel()  argument
310 	struct slim_device *sdev = stream->dev;  in slim_define_channel()
314 	DEFINE_SLIM_LDEST_TXN(txn, mc, 8, stream->dev->laddr, &msg);  in slim_define_channel()
316 	port->ch.seg_dist = slim_get_segdist_code(stream->ratem);  in slim_define_channel()
320 	wbuf[2] = (stream->prot << 4) | ((port->ch.seg_dist & 0xF00) >> 8);  in slim_define_channel()
321 	if (stream->prot == SLIM_PROTO_ISO)  in slim_define_channel()
322 		wbuf[3] = stream->bps/SLIM_SLOT_LEN_BITS;  in slim_define_channel()
324 		wbuf[3] = stream->bps/SLIM_SLOT_LEN_BITS + 1;  in slim_define_channel()
331 static int slim_activate_channel(struct slim_stream_runtime *stream,  in slim_activate_channel()  argument
334 	struct slim_device *sdev = stream->dev;  in slim_activate_channel()
338 	DEFINE_SLIM_LDEST_TXN(txn, mc, 5, stream->dev->laddr, &msg);  in slim_activate_channel()
349  * slim_stream_enable() - Enable a prepared SLIMbus Stream
351  * @stream: instance of slim stream runtime to enable
354  * SLIMbus stream
359 int slim_stream_enable(struct slim_stream_runtime *stream)  in slim_stream_enable()  argument
363 	struct slim_controller *ctrl = stream->dev->ctrl;  in slim_stream_enable()
367 		ret = ctrl->enable_stream(stream);  in slim_stream_enable()
371 		for (i = 0; i < stream->num_ports; i++)  in slim_stream_enable()
372 			stream->ports[i].ch.state = SLIM_CH_STATE_ACTIVE;  in slim_stream_enable()
382 	for (i = 0; i < stream->num_ports; i++) {  in slim_stream_enable()
383 		struct slim_port *port = &stream->ports[i];  in slim_stream_enable()
385 		slim_define_channel(stream, port);  in slim_stream_enable()
386 		slim_define_channel_content(stream, port);  in slim_stream_enable()
389 	for (i = 0; i < stream->num_ports; i++) {  in slim_stream_enable()
390 		struct slim_port *port = &stream->ports[i];  in slim_stream_enable()
392 		slim_activate_channel(stream, port);  in slim_stream_enable()
402  * slim_stream_disable() - Disable a SLIMbus Stream
404  * @stream: instance of slim stream runtime to disable
407  * SLIMbus stream
412 int slim_stream_disable(struct slim_stream_runtime *stream)  in slim_stream_disable()  argument
416 	struct slim_controller *ctrl = stream->dev->ctrl;  in slim_stream_disable()
419 	if (!stream->ports || !stream->num_ports)  in slim_stream_disable()
423 		ctrl->disable_stream(stream);  in slim_stream_disable()
429 	for (i = 0; i < stream->num_ports; i++)  in slim_stream_disable()
430 		slim_deactivate_remove_channel(stream, &stream->ports[i]);  in slim_stream_disable()
439  * slim_stream_unprepare() - Un-prepare a SLIMbus Stream
441  * @stream: instance of slim stream runtime to unprepare
444  * SLIMbus stream
449 int slim_stream_unprepare(struct slim_stream_runtime *stream)  in slim_stream_unprepare()  argument
453 	if (!stream->ports || !stream->num_ports)  in slim_stream_unprepare()
456 	for (i = 0; i < stream->num_ports; i++)  in slim_stream_unprepare()
457 		slim_disconnect_port(stream, &stream->ports[i]);  in slim_stream_unprepare()
459 	kfree(stream->ports);  in slim_stream_unprepare()
460 	stream->ports = NULL;  in slim_stream_unprepare()
461 	stream->num_ports = 0;  in slim_stream_unprepare()
468  * slim_stream_free() - Free a SLIMbus Stream
470  * @stream: instance of slim stream runtime to free
473  * slim stream runtime, user is not allowed to make an dereference
474  * to stream after this call.
479 int slim_stream_free(struct slim_stream_runtime *stream)  in slim_stream_free()  argument
481 	struct slim_device *sdev = stream->dev;  in slim_stream_free()
484 	list_del(&stream->node);  in slim_stream_free()
487 	kfree(stream->name);  in slim_stream_free()
488 	kfree(stream);  in slim_stream_free()