1 // SPDX-License-Identifier: GPL-2.0-only
3  *  hdac-ext-stream.c - HD-audio extended stream operations.
19  * snd_hdac_ext_stream_init - initialize each stream (aka device)
20  * @bus: HD-audio core bus
21  * @stream: HD-audio ext core stream object to initialize
33 	if (bus->ppcap) {  in snd_hdac_ext_stream_init()
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()
38 				AZX_PPLC_MULTI * bus->num_streams +  in snd_hdac_ext_stream_init()
42 	if (bus->spbcap) {  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()
52 	if (bus->drsmcap)  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
64  * @bus: HD-audio core bus
79 			return -ENOMEM;  in snd_hdac_ext_stream_init_all()
91  * snd_hdac_stream_free_all - free hdac extended stream objects
93  * @bus: HD-audio core bus
100 	list_for_each_entry_safe(s, _s, &bus->stream_list, list) {  in snd_hdac_stream_free_all()
103 		list_del(&s->list);  in snd_hdac_stream_free_all()
110  * snd_hdac_ext_stream_decouple - decouple the hdac stream
111  * @bus: HD-audio core bus
112  * @stream: HD-audio ext core stream object to initialize
118 	struct hdac_stream *hstream = &stream->hstream;  in snd_hdac_ext_stream_decouple()
120 	int mask = AZX_PPCTL_PROCEN(hstream->index);  in snd_hdac_ext_stream_decouple()
122 	spin_lock_irq(&bus->reg_lock);  in snd_hdac_ext_stream_decouple()
123 	val = readw(bus->ppcap + AZX_REG_PP_PPCTL) & mask;  in snd_hdac_ext_stream_decouple()
126 		snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, mask, mask);  in snd_hdac_ext_stream_decouple()
128 		snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, mask, 0);  in snd_hdac_ext_stream_decouple()
130 	stream->decoupled = decouple;  in snd_hdac_ext_stream_decouple()
131 	spin_unlock_irq(&bus->reg_lock);  in snd_hdac_ext_stream_decouple()
136  * snd_hdac_ext_linkstream_start - start a stream
137  * @stream: HD-audio ext core stream to start
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
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
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()
177 	} while (--timeout);  in snd_hdac_ext_link_stream_reset()
179 	writel(val, stream->pplc_addr + AZX_REG_PPLCCTL);  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()
189 	} while (--timeout);  in snd_hdac_ext_link_stream_reset()
195  * snd_hdac_ext_link_stream_setup -  set up the SD for streaming
196  * @stream: HD-audio ext core stream to set up
201 	struct hdac_stream *hstream = &stream->hstream;  in snd_hdac_ext_link_stream_setup()
207 	val = readl(stream->pplc_addr + AZX_REG_PPLCCTL);  in snd_hdac_ext_link_stream_setup()
209 		(hstream->stream_tag << AZX_PPLCCTL_STRM_SHIFT);  in snd_hdac_ext_link_stream_setup()
210 	writel(val, stream->pplc_addr + AZX_REG_PPLCCTL);  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
221  * @link: HD-audio ext link to set up
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
233  * @link: HD-audio ext link to set up
239 	snd_hdac_updatew(link->ml_addr, AZX_REG_ML_LOSIDV, (1 << stream), 0);  in snd_hdac_ext_link_clear_stream_id()
250 	if (!bus->ppcap) {  in hdac_ext_link_stream_assign()
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()
259 		if (stream->direction != substream->stream)  in hdac_ext_link_stream_assign()
263 		if (hstream->decoupled && !hstream->link_locked) {  in hdac_ext_link_stream_assign()
268 		if (!hstream->link_locked) {  in hdac_ext_link_stream_assign()
275 		spin_lock_irq(&bus->reg_lock);  in hdac_ext_link_stream_assign()
276 		res->link_locked = 1;  in hdac_ext_link_stream_assign()
277 		res->link_substream = substream;  in hdac_ext_link_stream_assign()
278 		spin_unlock_irq(&bus->reg_lock);  in hdac_ext_link_stream_assign()
290 	if (!bus->ppcap) {  in hdac_ext_host_stream_assign()
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()
299 		if (stream->direction != substream->stream)  in hdac_ext_host_stream_assign()
302 		if (!stream->opened) {  in hdac_ext_host_stream_assign()
303 			if (!hstream->decoupled)  in hdac_ext_host_stream_assign()
310 		spin_lock_irq(&bus->reg_lock);  in hdac_ext_host_stream_assign()
311 		res->hstream.opened = 1;  in hdac_ext_host_stream_assign()
312 		res->hstream.running = 0;  in hdac_ext_host_stream_assign()
313 		res->hstream.substream = substream;  in hdac_ext_host_stream_assign()
314 		spin_unlock_irq(&bus->reg_lock);  in hdac_ext_host_stream_assign()
321  * snd_hdac_ext_stream_assign - assign a stream for the PCM
322  * @bus: HD-audio core bus
365  * snd_hdac_ext_stream_release - release the assigned stream
366  * @stream: HD-audio ext core stream to release
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()
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()
389 		spin_lock_irq(&bus->reg_lock);  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()
392 		spin_unlock_irq(&bus->reg_lock);  in snd_hdac_ext_stream_release()
396 		dev_dbg(bus->dev, "Invalid type %d\n", type);  in snd_hdac_ext_stream_release()
403  * snd_hdac_ext_stream_spbcap_enable - enable SPIB for a stream
404  * @bus: HD-audio core bus
413 	if (!bus->spbcap) {  in snd_hdac_ext_stream_spbcap_enable()
414 		dev_err(bus->dev, "Address of SPB capability is NULL\n");  in snd_hdac_ext_stream_spbcap_enable()
421 		snd_hdac_updatel(bus->spbcap, AZX_REG_SPB_SPBFCCTL, mask, mask);  in snd_hdac_ext_stream_spbcap_enable()
423 		snd_hdac_updatel(bus->spbcap, AZX_REG_SPB_SPBFCCTL, mask, 0);  in snd_hdac_ext_stream_spbcap_enable()
428  * snd_hdac_ext_stream_set_spib - sets the spib value of a stream
429  * @bus: HD-audio core bus
437 	if (!bus->spbcap) {  in snd_hdac_ext_stream_set_spib()
438 		dev_err(bus->dev, "Address of SPB capability is NULL\n");  in snd_hdac_ext_stream_set_spib()
439 		return -EINVAL;  in snd_hdac_ext_stream_set_spib()
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
450  * @bus: HD-audio core bus
459 	if (!bus->spbcap) {  in snd_hdac_ext_stream_get_spbmaxfifo()
460 		dev_err(bus->dev, "Address of SPB capability is NULL\n");  in snd_hdac_ext_stream_get_spbmaxfifo()
461 		return -EINVAL;  in snd_hdac_ext_stream_get_spbmaxfifo()
464 	return readl(stream->fifo_addr);  in snd_hdac_ext_stream_get_spbmaxfifo()
470  * snd_hdac_ext_stop_streams - stop all stream if running
471  * @bus: HD-audio core bus
477 	if (bus->chip_init) {  in snd_hdac_ext_stop_streams()
478 		list_for_each_entry(stream, &bus->stream_list, list)  in snd_hdac_ext_stop_streams()
486  * snd_hdac_ext_stream_drsm_enable - enable DMA resume for a stream
487  * @bus: HD-audio core bus
496 	if (!bus->drsmcap) {  in snd_hdac_ext_stream_drsm_enable()
497 		dev_err(bus->dev, "Address of DRSM capability is NULL\n");  in snd_hdac_ext_stream_drsm_enable()
504 		snd_hdac_updatel(bus->drsmcap, AZX_REG_DRSM_CTL, mask, mask);  in snd_hdac_ext_stream_drsm_enable()
506 		snd_hdac_updatel(bus->drsmcap, AZX_REG_DRSM_CTL, mask, 0);  in snd_hdac_ext_stream_drsm_enable()
511  * snd_hdac_ext_stream_set_dpibr - sets the dpibr value of a stream
512  * @bus: HD-audio core bus
520 	if (!bus->drsmcap) {  in snd_hdac_ext_stream_set_dpibr()
521 		dev_err(bus->dev, "Address of DRSM capability is NULL\n");  in snd_hdac_ext_stream_set_dpibr()
522 		return -EINVAL;  in snd_hdac_ext_stream_set_dpibr()
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
538 	snd_hdac_stream_writel(&stream->hstream, SD_LPIB, value);  in snd_hdac_ext_stream_set_lpib()