3  *  hdac-ext-stream.c - HD-audio extended stream operations.
19  * snd_hdac_ext_stream_init - initialize each stream (aka device)
21  * @stream: HD-audio ext core stream object to initialize
22  * @idx: stream index number
23  * @direction: stream direction (SNDRV_PCM_STREAM_PLAYBACK or SNDRV_PCM_STREAM_CAPTURE)
26  * initialize the stream, if ppcap is enabled then init those and then
27  * invoke hdac stream initialization routine
30 				struct hdac_ext_stream *stream,  in snd_hdac_ext_stream_init()  argument
34 		stream->pphc_addr = bus->ppcap + AZX_PPHC_BASE +  in snd_hdac_ext_stream_init()
37 		stream->pplc_addr = bus->ppcap + AZX_PPLC_BASE +  in snd_hdac_ext_stream_init()
43 		stream->spib_addr = bus->spbcap + AZX_SPB_BASE +  in snd_hdac_ext_stream_init()
47 		stream->fifo_addr = bus->spbcap + AZX_SPB_BASE +  in snd_hdac_ext_stream_init()
53 		stream->dpibr_addr = bus->drsmcap + AZX_DRSM_BASE +  in snd_hdac_ext_stream_init()
56 	stream->decoupled = false;  in snd_hdac_ext_stream_init()
57 	snd_hdac_stream_init(bus, &stream->hstream, idx, direction, tag);  in snd_hdac_ext_stream_init()
62  * snd_hdac_ext_stream_init_all - create and initialize the stream objects
76 		struct hdac_ext_stream *stream =  in snd_hdac_ext_stream_init_all()  local
77 				kzalloc(sizeof(*stream), GFP_KERNEL);  in snd_hdac_ext_stream_init_all()
78 		if (!stream)  in snd_hdac_ext_stream_init_all()
81 		snd_hdac_ext_stream_init(bus, stream, idx, dir, tag);  in snd_hdac_ext_stream_init_all()
91  * snd_hdac_stream_free_all - free hdac extended stream objects
98 	struct hdac_ext_stream *stream;  in snd_hdac_stream_free_all()  local
101 		stream = stream_to_hdac_ext_stream(s);  in snd_hdac_stream_free_all()
102 		snd_hdac_ext_stream_decouple(bus, stream, false);  in snd_hdac_stream_free_all()
104 		kfree(stream);  in snd_hdac_stream_free_all()
110  * snd_hdac_ext_stream_decouple - decouple the hdac stream
112  * @stream: HD-audio ext core stream object to initialize
116 				struct hdac_ext_stream *stream, bool decouple)  in snd_hdac_ext_stream_decouple()  argument
118 	struct hdac_stream *hstream = &stream->hstream;  in snd_hdac_ext_stream_decouple()
130 	stream->decoupled = decouple;  in snd_hdac_ext_stream_decouple()
136  * snd_hdac_ext_linkstream_start - start a stream
137  * @stream: HD-audio ext core stream to start
139 void snd_hdac_ext_link_stream_start(struct hdac_ext_stream *stream)  in snd_hdac_ext_link_stream_start()  argument
141 	snd_hdac_updatel(stream->pplc_addr, AZX_REG_PPLCCTL,  in snd_hdac_ext_link_stream_start()
147  * snd_hdac_ext_link_stream_clear - stop a stream DMA
148  * @stream: HD-audio ext core stream to stop
150 void snd_hdac_ext_link_stream_clear(struct hdac_ext_stream *stream)  in snd_hdac_ext_link_stream_clear()  argument
152 	snd_hdac_updatel(stream->pplc_addr, AZX_REG_PPLCCTL, AZX_PPLCCTL_RUN, 0);  in snd_hdac_ext_link_stream_clear()
157  * snd_hdac_ext_link_stream_reset - reset a stream
158  * @stream: HD-audio ext core stream to reset
160 void snd_hdac_ext_link_stream_reset(struct hdac_ext_stream *stream)  in snd_hdac_ext_link_stream_reset()  argument
165 	snd_hdac_ext_link_stream_clear(stream);  in snd_hdac_ext_link_stream_reset()
167 	snd_hdac_updatel(stream->pplc_addr, AZX_REG_PPLCCTL,  in snd_hdac_ext_link_stream_reset()
172 		val = readl(stream->pplc_addr + AZX_REG_PPLCCTL) &  in snd_hdac_ext_link_stream_reset()
179 	writel(val, stream->pplc_addr + AZX_REG_PPLCCTL);  in snd_hdac_ext_link_stream_reset()
183 	/* waiting for hardware to report that the stream is out of reset */  in snd_hdac_ext_link_stream_reset()
185 		val = readl(stream->pplc_addr + AZX_REG_PPLCCTL) & AZX_PPLCCTL_STRST;  in snd_hdac_ext_link_stream_reset()
196  * @stream: HD-audio ext core stream to set up
197  * @fmt: stream format
199 int snd_hdac_ext_link_stream_setup(struct hdac_ext_stream *stream, int fmt)  in snd_hdac_ext_link_stream_setup()  argument
201 	struct hdac_stream *hstream = &stream->hstream;  in snd_hdac_ext_link_stream_setup()
205 	snd_hdac_ext_link_stream_clear(stream);  in snd_hdac_ext_link_stream_setup()
207 	val = readl(stream->pplc_addr + AZX_REG_PPLCCTL);  in snd_hdac_ext_link_stream_setup()
210 	writel(val, stream->pplc_addr + AZX_REG_PPLCCTL);  in snd_hdac_ext_link_stream_setup()
212 	/* program the stream format */  in snd_hdac_ext_link_stream_setup()
213 	writew(fmt, stream->pplc_addr + AZX_REG_PPLCFMT);  in snd_hdac_ext_link_stream_setup()
220  * snd_hdac_ext_link_set_stream_id - maps stream id to link output
222  * @stream: stream id
225 				 int stream)  in snd_hdac_ext_link_set_stream_id()  argument
227 	snd_hdac_updatew(link->ml_addr, AZX_REG_ML_LOSIDV, (1 << stream), 1 << stream);  in snd_hdac_ext_link_set_stream_id()
232  * snd_hdac_ext_link_clear_stream_id - maps stream id to link output
234  * @stream: stream id
237 				 int stream)  in snd_hdac_ext_link_clear_stream_id()  argument
239 	snd_hdac_updatew(link->ml_addr, AZX_REG_ML_LOSIDV, (1 << stream), 0);  in snd_hdac_ext_link_clear_stream_id()
248 	struct hdac_stream *stream = NULL;  in hdac_ext_link_stream_assign()  local
251 		dev_err(bus->dev, "stream type not supported\n");  in hdac_ext_link_stream_assign()
255 	list_for_each_entry(stream, &bus->stream_list, list) {  in hdac_ext_link_stream_assign()
256 		struct hdac_ext_stream *hstream = container_of(stream,  in hdac_ext_link_stream_assign()
259 		if (stream->direction != substream->stream)  in hdac_ext_link_stream_assign()
262 		/* check if decoupled stream and not in use is available */  in hdac_ext_link_stream_assign()
288 	struct hdac_stream *stream = NULL;  in hdac_ext_host_stream_assign()  local
291 		dev_err(bus->dev, "stream type not supported\n");  in hdac_ext_host_stream_assign()
295 	list_for_each_entry(stream, &bus->stream_list, list) {  in hdac_ext_host_stream_assign()
296 		struct hdac_ext_stream *hstream = container_of(stream,  in hdac_ext_host_stream_assign()
299 		if (stream->direction != substream->stream)  in hdac_ext_host_stream_assign()
302 		if (!stream->opened) {  in hdac_ext_host_stream_assign()
321  * snd_hdac_ext_stream_assign - assign a stream for the PCM
324  * @type: type of stream (coupled, host or link stream)
326  * This assigns the stream based on the type (coupled/host/link), for the
327  * given PCM substream, assigns it and returns the stream object
329  * coupled: Looks for an unused stream
330  * host: Looks for an unused decoupled host stream
331  * link: Looks for an unused decoupled link stream
333  * If no stream is free, returns NULL. The function tries to keep using
334  * the same stream object when it's used beforehand.  when a stream is
335  * decoupled, it becomes a host stream and link stream.
342 	struct hdac_stream *stream = NULL;  in snd_hdac_ext_stream_assign()  local
346 		stream = snd_hdac_stream_assign(bus, substream);  in snd_hdac_ext_stream_assign()
347 		if (stream)  in snd_hdac_ext_stream_assign()
348 			hstream = container_of(stream,  in snd_hdac_ext_stream_assign()
365  * snd_hdac_ext_stream_release - release the assigned stream
366  * @stream: HD-audio ext core stream to release
367  * @type: type of stream (coupled, host or link stream)
369  * Release the stream that has been assigned by snd_hdac_ext_stream_assign().
371 void snd_hdac_ext_stream_release(struct hdac_ext_stream *stream, int type)  in snd_hdac_ext_stream_release()  argument
373 	struct hdac_bus *bus = stream->hstream.bus;  in snd_hdac_ext_stream_release()
377 		snd_hdac_stream_release(&stream->hstream);  in snd_hdac_ext_stream_release()
381 		if (stream->decoupled && !stream->link_locked)  in snd_hdac_ext_stream_release()
382 			snd_hdac_ext_stream_decouple(bus, stream, false);  in snd_hdac_ext_stream_release()
383 		snd_hdac_stream_release(&stream->hstream);  in snd_hdac_ext_stream_release()
387 		if (stream->decoupled && !stream->hstream.opened)  in snd_hdac_ext_stream_release()
388 			snd_hdac_ext_stream_decouple(bus, stream, false);  in snd_hdac_ext_stream_release()
390 		stream->link_locked = 0;  in snd_hdac_ext_stream_release()
391 		stream->link_substream = NULL;  in snd_hdac_ext_stream_release()
403  * snd_hdac_ext_stream_spbcap_enable - enable SPIB for a stream
406  * @index: stream index for which SPIB need to be enabled
428  * snd_hdac_ext_stream_set_spib - sets the spib value of a stream
430  * @stream: hdac_ext_stream
434 				 struct hdac_ext_stream *stream, u32 value)  in snd_hdac_ext_stream_set_spib()  argument
442 	writel(value, stream->spib_addr);  in snd_hdac_ext_stream_set_spib()
449  * snd_hdac_ext_stream_get_spbmaxfifo - gets the spib value of a stream
451  * @stream: hdac_ext_stream
453  * Return maxfifo for the stream
456 				 struct hdac_ext_stream *stream)  in snd_hdac_ext_stream_get_spbmaxfifo()  argument
464 	return readl(stream->fifo_addr);  in snd_hdac_ext_stream_get_spbmaxfifo()
470  * snd_hdac_ext_stop_streams - stop all stream if running
475 	struct hdac_stream *stream;  in snd_hdac_ext_stop_streams()  local
478 		list_for_each_entry(stream, &bus->stream_list, list)  in snd_hdac_ext_stop_streams()
479 			snd_hdac_stream_stop(stream);  in snd_hdac_ext_stop_streams()
486  * snd_hdac_ext_stream_drsm_enable - enable DMA resume for a stream
489  * @index: stream index for which DRSM need to be enabled
511  * snd_hdac_ext_stream_set_dpibr - sets the dpibr value of a stream
513  * @stream: hdac_ext_stream
517 				 struct hdac_ext_stream *stream, u32 value)  in snd_hdac_ext_stream_set_dpibr()  argument
525 	writel(value, stream->dpibr_addr);  in snd_hdac_ext_stream_set_dpibr()
532  * snd_hdac_ext_stream_set_lpib - sets the lpib value of a stream
533  * @stream: hdac_ext_stream
536 int snd_hdac_ext_stream_set_lpib(struct hdac_ext_stream *stream, u32 value)  in snd_hdac_ext_stream_set_lpib()  argument
538 	snd_hdac_stream_writel(&stream->hstream, SD_LPIB, value);  in snd_hdac_ext_stream_set_lpib()