53  * The Presence rate of a constant bitrate stream is mean flow rate of the
54  * stream expressed in occupied Segments of that Data Channel per second.
88  * slim_stream_allocate() - Allocate a new SLIMbus Stream
90  * @name: name of the stream
93  * a new SLIMbus stream and return a valid stream runtime pointer for client
94  * to use it in subsequent stream apis. state of stream is set to ALLOCATED
123 static int slim_connect_port_channel(struct slim_stream_runtime *stream,  in slim_connect_port_channel()  argument
126 	struct slim_device *sdev = stream->dev;  in slim_connect_port_channel()
130 	DEFINE_SLIM_LDEST_TXN(txn, mc, 6, stream->dev->laddr, &msg);  in slim_connect_port_channel()
143 static int slim_disconnect_port(struct slim_stream_runtime *stream,  in slim_disconnect_port()  argument
146 	struct slim_device *sdev = stream->dev;  in slim_disconnect_port()
150 	DEFINE_SLIM_LDEST_TXN(txn, mc, 5, stream->dev->laddr, &msg);  in slim_disconnect_port()
159 static int slim_deactivate_remove_channel(struct slim_stream_runtime *stream,  in slim_deactivate_remove_channel()  argument
162 	struct slim_device *sdev = stream->dev;  in slim_deactivate_remove_channel()
166 	DEFINE_SLIM_LDEST_TXN(txn, mc, 5, stream->dev->laddr, &msg);  in slim_deactivate_remove_channel()
193  * slim_stream_prepare() - Prepare a SLIMbus Stream
195  * @rt: instance of slim stream runtime to configure
196  * @cfg: new configuration for the stream
198  * This API will configure SLIMbus stream with config parameters from cfg.
210 		dev_err(&rt->dev->dev, "Stream already Prepared\n");  in slim_stream_prepare()
263 static int slim_define_channel_content(struct slim_stream_runtime *stream,  in slim_define_channel_content()  argument
266 	struct slim_device *sdev = stream->dev;  in slim_define_channel_content()
270 	DEFINE_SLIM_LDEST_TXN(txn, mc, 8, stream->dev->laddr, &msg);  in slim_define_channel_content()
276 	if (stream->prot != SLIM_PROTO_ISO)  in slim_define_channel_content()
280 	wbuf[3] = stream->bps/SLIM_SLOT_LEN_BITS;  in slim_define_channel_content()
298 static int slim_define_channel(struct slim_stream_runtime *stream,  in slim_define_channel()  argument
301 	struct slim_device *sdev = stream->dev;  in slim_define_channel()
305 	DEFINE_SLIM_LDEST_TXN(txn, mc, 8, stream->dev->laddr, &msg);  in slim_define_channel()
307 	port->ch.seg_dist = slim_get_segdist_code(stream->ratem);  in slim_define_channel()
311 	wbuf[2] = (stream->prot << 4) | ((port->ch.seg_dist & 0xF00) >> 8);  in slim_define_channel()
312 	if (stream->prot == SLIM_PROTO_ISO)  in slim_define_channel()
313 		wbuf[3] = stream->bps/SLIM_SLOT_LEN_BITS;  in slim_define_channel()
315 		wbuf[3] = stream->bps/SLIM_SLOT_LEN_BITS + 1;  in slim_define_channel()
322 static int slim_activate_channel(struct slim_stream_runtime *stream,  in slim_activate_channel()  argument
325 	struct slim_device *sdev = stream->dev;  in slim_activate_channel()
329 	DEFINE_SLIM_LDEST_TXN(txn, mc, 5, stream->dev->laddr, &msg);  in slim_activate_channel()
340  * slim_stream_enable() - Enable a prepared SLIMbus Stream
342  * @stream: instance of slim stream runtime to enable
345  * SLIMbus stream
350 int slim_stream_enable(struct slim_stream_runtime *stream)  in slim_stream_enable()  argument
354 	struct slim_controller *ctrl = stream->dev->ctrl;  in slim_stream_enable()
358 		ret = ctrl->enable_stream(stream);  in slim_stream_enable()
362 		for (i = 0; i < stream->num_ports; i++)  in slim_stream_enable()
363 			stream->ports[i].ch.state = SLIM_CH_STATE_ACTIVE;  in slim_stream_enable()
373 	for (i = 0; i < stream->num_ports; i++) {  in slim_stream_enable()
374 		struct slim_port *port = &stream->ports[i];  in slim_stream_enable()
376 		slim_define_channel(stream, port);  in slim_stream_enable()
377 		slim_define_channel_content(stream, port);  in slim_stream_enable()
380 	for (i = 0; i < stream->num_ports; i++) {  in slim_stream_enable()
381 		struct slim_port *port = &stream->ports[i];  in slim_stream_enable()
383 		slim_activate_channel(stream, port);  in slim_stream_enable()
393  * slim_stream_disable() - Disable a SLIMbus Stream
395  * @stream: instance of slim stream runtime to disable
398  * SLIMbus stream
403 int slim_stream_disable(struct slim_stream_runtime *stream)  in slim_stream_disable()  argument
407 	struct slim_controller *ctrl = stream->dev->ctrl;  in slim_stream_disable()
411 		ctrl->disable_stream(stream);  in slim_stream_disable()
417 	for (i = 0; i < stream->num_ports; i++)  in slim_stream_disable()
418 		slim_deactivate_remove_channel(stream, &stream->ports[i]);  in slim_stream_disable()
427  * slim_stream_unprepare() - Un-prepare a SLIMbus Stream
429  * @stream: instance of slim stream runtime to unprepare
432  * SLIMbus stream
437 int slim_stream_unprepare(struct slim_stream_runtime *stream)  in slim_stream_unprepare()  argument
441 	for (i = 0; i < stream->num_ports; i++)  in slim_stream_unprepare()
442 		slim_disconnect_port(stream, &stream->ports[i]);  in slim_stream_unprepare()
444 	kfree(stream->ports);  in slim_stream_unprepare()
445 	stream->ports = NULL;  in slim_stream_unprepare()
446 	stream->num_ports = 0;  in slim_stream_unprepare()
453  * slim_stream_free() - Free a SLIMbus Stream
455  * @stream: instance of slim stream runtime to free
458  * slim stream runtime, user is not allowed to make an dereference
459  * to stream after this call.
464 int slim_stream_free(struct slim_stream_runtime *stream)  in slim_stream_free()  argument
466 	struct slim_device *sdev = stream->dev;  in slim_stream_free()
469 	list_del(&stream->node);  in slim_stream_free()
472 	kfree(stream->name);  in slim_stream_free()
473 	kfree(stream);  in slim_stream_free()