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()
270 static int slim_define_channel_content(struct slim_stream_runtime *stream,  in slim_define_channel_content()  argument
273 	struct slim_device *sdev = stream->dev;  in slim_define_channel_content()
277 	DEFINE_SLIM_LDEST_TXN(txn, mc, 8, stream->dev->laddr, &msg);  in slim_define_channel_content()
283 	if (stream->prot != SLIM_PROTO_ISO)  in slim_define_channel_content()
287 	wbuf[3] = stream->bps/SLIM_SLOT_LEN_BITS;  in slim_define_channel_content()
305 static int slim_define_channel(struct slim_stream_runtime *stream,  in slim_define_channel()  argument
308 	struct slim_device *sdev = stream->dev;  in slim_define_channel()
312 	DEFINE_SLIM_LDEST_TXN(txn, mc, 8, stream->dev->laddr, &msg);  in slim_define_channel()
314 	port->ch.seg_dist = slim_get_segdist_code(stream->ratem);  in slim_define_channel()
318 	wbuf[2] = (stream->prot << 4) | ((port->ch.seg_dist & 0xF00) >> 8);  in slim_define_channel()
319 	if (stream->prot == SLIM_PROTO_ISO)  in slim_define_channel()
320 		wbuf[3] = stream->bps/SLIM_SLOT_LEN_BITS;  in slim_define_channel()
322 		wbuf[3] = stream->bps/SLIM_SLOT_LEN_BITS + 1;  in slim_define_channel()
329 static int slim_activate_channel(struct slim_stream_runtime *stream,  in slim_activate_channel()  argument
332 	struct slim_device *sdev = stream->dev;  in slim_activate_channel()
336 	DEFINE_SLIM_LDEST_TXN(txn, mc, 5, stream->dev->laddr, &msg);  in slim_activate_channel()
347  * slim_stream_enable() - Enable a prepared SLIMbus Stream
349  * @stream: instance of slim stream runtime to enable
352  * SLIMbus stream
357 int slim_stream_enable(struct slim_stream_runtime *stream)  in slim_stream_enable()  argument
361 	struct slim_controller *ctrl = stream->dev->ctrl;  in slim_stream_enable()
365 		ret = ctrl->enable_stream(stream);  in slim_stream_enable()
369 		for (i = 0; i < stream->num_ports; i++)  in slim_stream_enable()
370 			stream->ports[i].ch.state = SLIM_CH_STATE_ACTIVE;  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_define_channel(stream, port);  in slim_stream_enable()
384 		slim_define_channel_content(stream, port);  in slim_stream_enable()
387 	for (i = 0; i < stream->num_ports; i++) {  in slim_stream_enable()
388 		struct slim_port *port = &stream->ports[i];  in slim_stream_enable()
390 		slim_activate_channel(stream, port);  in slim_stream_enable()
400  * slim_stream_disable() - Disable a SLIMbus Stream
402  * @stream: instance of slim stream runtime to disable
405  * SLIMbus stream
410 int slim_stream_disable(struct slim_stream_runtime *stream)  in slim_stream_disable()  argument
414 	struct slim_controller *ctrl = stream->dev->ctrl;  in slim_stream_disable()
417 	if (!stream->ports || !stream->num_ports)  in slim_stream_disable()
421 		ctrl->disable_stream(stream);  in slim_stream_disable()
427 	for (i = 0; i < stream->num_ports; i++)  in slim_stream_disable()
428 		slim_deactivate_remove_channel(stream, &stream->ports[i]);  in slim_stream_disable()
437  * slim_stream_unprepare() - Un-prepare a SLIMbus Stream
439  * @stream: instance of slim stream runtime to unprepare
442  * SLIMbus stream
447 int slim_stream_unprepare(struct slim_stream_runtime *stream)  in slim_stream_unprepare()  argument
451 	if (!stream->ports || !stream->num_ports)  in slim_stream_unprepare()
454 	for (i = 0; i < stream->num_ports; i++)  in slim_stream_unprepare()
455 		slim_disconnect_port(stream, &stream->ports[i]);  in slim_stream_unprepare()
457 	kfree(stream->ports);  in slim_stream_unprepare()
458 	stream->ports = NULL;  in slim_stream_unprepare()
459 	stream->num_ports = 0;  in slim_stream_unprepare()
466  * slim_stream_free() - Free a SLIMbus Stream
468  * @stream: instance of slim stream runtime to free
471  * slim stream runtime, user is not allowed to make an dereference
472  * to stream after this call.
477 int slim_stream_free(struct slim_stream_runtime *stream)  in slim_stream_free()  argument
479 	struct slim_device *sdev = stream->dev;  in slim_stream_free()
482 	list_del(&stream->node);  in slim_stream_free()
485 	kfree(stream->name);  in slim_stream_free()
486 	kfree(stream);  in slim_stream_free()