253 	struct stm32_spdifrx_data *spdifrx = (struct stm32_spdifrx_data *)data;  in stm32_spdifrx_dma_complete()  local
254 	struct platform_device *pdev = spdifrx->pdev;  in stm32_spdifrx_dma_complete()
255 	u32 *p_start = (u32 *)spdifrx->dmab->area;  in stm32_spdifrx_dma_complete()
258 	u16 *ub_ptr = (short *)spdifrx->ub;  in stm32_spdifrx_dma_complete()
261 	regmap_update_bits(spdifrx->regmap, STM32_SPDIFRX_CR,  in stm32_spdifrx_dma_complete()
265 	if (!spdifrx->dmab->area)  in stm32_spdifrx_dma_complete()
280 		spdifrx->cs[i] = (unsigned char)SPDIFRX_CSR_CSGET(*ptr);  in stm32_spdifrx_dma_complete()
289 	complete(&spdifrx->cs_completion);  in stm32_spdifrx_dma_complete()
292 static int stm32_spdifrx_dma_ctrl_start(struct stm32_spdifrx_data *spdifrx)  in stm32_spdifrx_dma_ctrl_start()  argument
297 	spdifrx->desc = dmaengine_prep_slave_single(spdifrx->ctrl_chan,  in stm32_spdifrx_dma_ctrl_start()
298 						    spdifrx->dmab->addr,  in stm32_spdifrx_dma_ctrl_start()
302 	if (!spdifrx->desc)  in stm32_spdifrx_dma_ctrl_start()
305 	spdifrx->desc->callback = stm32_spdifrx_dma_complete;  in stm32_spdifrx_dma_ctrl_start()
306 	spdifrx->desc->callback_param = spdifrx;  in stm32_spdifrx_dma_ctrl_start()
307 	cookie = dmaengine_submit(spdifrx->desc);  in stm32_spdifrx_dma_ctrl_start()
312 	dma_async_issue_pending(spdifrx->ctrl_chan);  in stm32_spdifrx_dma_ctrl_start()
317 static void stm32_spdifrx_dma_ctrl_stop(struct stm32_spdifrx_data *spdifrx)  in stm32_spdifrx_dma_ctrl_stop()  argument
319 	dmaengine_terminate_async(spdifrx->ctrl_chan);  in stm32_spdifrx_dma_ctrl_stop()
322 static int stm32_spdifrx_start_sync(struct stm32_spdifrx_data *spdifrx)  in stm32_spdifrx_start_sync()  argument
329 	ret = regmap_update_bits(spdifrx->regmap, STM32_SPDIFRX_IMR, imr, imr);  in stm32_spdifrx_start_sync()
333 	spin_lock_irqsave(&spdifrx->lock, flags);  in stm32_spdifrx_start_sync()
335 	spdifrx->refcount++;  in stm32_spdifrx_start_sync()
337 	regmap_read(spdifrx->regmap, STM32_SPDIFRX_CR, &cr);  in stm32_spdifrx_start_sync()
344 		dev_dbg(&spdifrx->pdev->dev, "start synchronization\n");  in stm32_spdifrx_start_sync()
361 		ret = regmap_update_bits(spdifrx->regmap, STM32_SPDIFRX_CR,  in stm32_spdifrx_start_sync()
364 			dev_err(&spdifrx->pdev->dev,  in stm32_spdifrx_start_sync()
368 	spin_unlock_irqrestore(&spdifrx->lock, flags);  in stm32_spdifrx_start_sync()
373 static void stm32_spdifrx_stop(struct stm32_spdifrx_data *spdifrx)  in stm32_spdifrx_stop()  argument
378 	spin_lock_irqsave(&spdifrx->lock, flags);  in stm32_spdifrx_stop()
380 	if (--spdifrx->refcount) {  in stm32_spdifrx_stop()
381 		spin_unlock_irqrestore(&spdifrx->lock, flags);  in stm32_spdifrx_stop()
388 	regmap_update_bits(spdifrx->regmap, STM32_SPDIFRX_CR, cr_mask, cr);  in stm32_spdifrx_stop()
390 	regmap_update_bits(spdifrx->regmap, STM32_SPDIFRX_IMR,  in stm32_spdifrx_stop()
393 	regmap_update_bits(spdifrx->regmap, STM32_SPDIFRX_IFCR,  in stm32_spdifrx_stop()
397 	regmap_read(spdifrx->regmap, STM32_SPDIFRX_DR, &reg);  in stm32_spdifrx_stop()
398 	regmap_read(spdifrx->regmap, STM32_SPDIFRX_CSR, &reg);  in stm32_spdifrx_stop()
400 	spin_unlock_irqrestore(&spdifrx->lock, flags);  in stm32_spdifrx_stop()
404 					   struct stm32_spdifrx_data *spdifrx)  in stm32_spdifrx_dma_ctrl_register()  argument
408 	spdifrx->ctrl_chan = dma_request_chan(dev, "rx-ctrl");  in stm32_spdifrx_dma_ctrl_register()
409 	if (IS_ERR(spdifrx->ctrl_chan))  in stm32_spdifrx_dma_ctrl_register()
410 		return dev_err_probe(dev, PTR_ERR(spdifrx->ctrl_chan),  in stm32_spdifrx_dma_ctrl_register()
413 	spdifrx->dmab = devm_kzalloc(dev, sizeof(struct snd_dma_buffer),  in stm32_spdifrx_dma_ctrl_register()
415 	if (!spdifrx->dmab)  in stm32_spdifrx_dma_ctrl_register()
418 	spdifrx->dmab->dev.type = SNDRV_DMA_TYPE_DEV_IRAM;  in stm32_spdifrx_dma_ctrl_register()
419 	spdifrx->dmab->dev.dev = dev;  in stm32_spdifrx_dma_ctrl_register()
420 	ret = snd_dma_alloc_pages(spdifrx->dmab->dev.type, dev,  in stm32_spdifrx_dma_ctrl_register()
421 				  SPDIFRX_CSR_BUF_LENGTH, spdifrx->dmab);  in stm32_spdifrx_dma_ctrl_register()
427 	spdifrx->slave_config.direction = DMA_DEV_TO_MEM;  in stm32_spdifrx_dma_ctrl_register()
428 	spdifrx->slave_config.src_addr = (dma_addr_t)(spdifrx->phys_addr +  in stm32_spdifrx_dma_ctrl_register()
430 	spdifrx->slave_config.dst_addr = spdifrx->dmab->addr;  in stm32_spdifrx_dma_ctrl_register()
431 	spdifrx->slave_config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;  in stm32_spdifrx_dma_ctrl_register()
432 	spdifrx->slave_config.src_maxburst = 1;  in stm32_spdifrx_dma_ctrl_register()
434 	ret = dmaengine_slave_config(spdifrx->ctrl_chan,  in stm32_spdifrx_dma_ctrl_register()
435 				     &spdifrx->slave_config);  in stm32_spdifrx_dma_ctrl_register()
438 		spdifrx->ctrl_chan = NULL;  in stm32_spdifrx_dma_ctrl_register()
479 static int stm32_spdifrx_get_ctrl_data(struct stm32_spdifrx_data *spdifrx)  in stm32_spdifrx_get_ctrl_data()  argument
483 	memset(spdifrx->cs, 0, SPDIFRX_CS_BYTES_NB);  in stm32_spdifrx_get_ctrl_data()
484 	memset(spdifrx->ub, 0, SPDIFRX_UB_BYTES_NB);  in stm32_spdifrx_get_ctrl_data()
486 	ret = stm32_spdifrx_dma_ctrl_start(spdifrx);  in stm32_spdifrx_get_ctrl_data()
490 	ret = clk_prepare_enable(spdifrx->kclk);  in stm32_spdifrx_get_ctrl_data()
492 		dev_err(&spdifrx->pdev->dev, "Enable kclk failed: %d\n", ret);  in stm32_spdifrx_get_ctrl_data()
496 	ret = regmap_update_bits(spdifrx->regmap, STM32_SPDIFRX_CR,  in stm32_spdifrx_get_ctrl_data()
501 	ret = stm32_spdifrx_start_sync(spdifrx);  in stm32_spdifrx_get_ctrl_data()
505 	if (wait_for_completion_interruptible_timeout(&spdifrx->cs_completion,  in stm32_spdifrx_get_ctrl_data()
508 		dev_dbg(&spdifrx->pdev->dev, "Failed to get control data\n");  in stm32_spdifrx_get_ctrl_data()
512 	stm32_spdifrx_stop(spdifrx);  in stm32_spdifrx_get_ctrl_data()
513 	stm32_spdifrx_dma_ctrl_stop(spdifrx);  in stm32_spdifrx_get_ctrl_data()
516 	clk_disable_unprepare(spdifrx->kclk);  in stm32_spdifrx_get_ctrl_data()
525 	struct stm32_spdifrx_data *spdifrx = snd_soc_dai_get_drvdata(cpu_dai);  in stm32_spdifrx_capture_get()  local
527 	stm32_spdifrx_get_ctrl_data(spdifrx);  in stm32_spdifrx_capture_get()
529 	ucontrol->value.iec958.status[0] = spdifrx->cs[0];  in stm32_spdifrx_capture_get()
530 	ucontrol->value.iec958.status[1] = spdifrx->cs[1];  in stm32_spdifrx_capture_get()
531 	ucontrol->value.iec958.status[2] = spdifrx->cs[2];  in stm32_spdifrx_capture_get()
532 	ucontrol->value.iec958.status[3] = spdifrx->cs[3];  in stm32_spdifrx_capture_get()
533 	ucontrol->value.iec958.status[4] = spdifrx->cs[4];  in stm32_spdifrx_capture_get()
542 	struct stm32_spdifrx_data *spdifrx = snd_soc_dai_get_drvdata(cpu_dai);  in stm32_spdif_user_bits_get()  local
544 	stm32_spdifrx_get_ctrl_data(spdifrx);  in stm32_spdif_user_bits_get()
546 	ucontrol->value.iec958.status[0] = spdifrx->ub[0];  in stm32_spdif_user_bits_get()
547 	ucontrol->value.iec958.status[1] = spdifrx->ub[1];  in stm32_spdif_user_bits_get()
548 	ucontrol->value.iec958.status[2] = spdifrx->ub[2];  in stm32_spdif_user_bits_get()
549 	ucontrol->value.iec958.status[3] = spdifrx->ub[3];  in stm32_spdif_user_bits_get()
550 	ucontrol->value.iec958.status[4] = spdifrx->ub[4];  in stm32_spdif_user_bits_get()
597 	struct stm32_spdifrx_data *spdifrx = dev_get_drvdata(cpu_dai->dev);  in stm32_spdifrx_dai_probe()  local
599 	spdifrx->dma_params.addr = (dma_addr_t)(spdifrx->phys_addr +  in stm32_spdifrx_dai_probe()
601 	spdifrx->dma_params.maxburst = 1;  in stm32_spdifrx_dai_probe()
603 	snd_soc_dai_init_dma_data(cpu_dai, NULL, &spdifrx->dma_params);  in stm32_spdifrx_dai_probe()
667 	struct stm32_spdifrx_data *spdifrx = (struct stm32_spdifrx_data *)devid;  in stm32_spdifrx_isr()  local
668 	struct platform_device *pdev = spdifrx->pdev;  in stm32_spdifrx_isr()
673 	regmap_read(spdifrx->regmap, STM32_SPDIFRX_SR, &sr);  in stm32_spdifrx_isr()
674 	regmap_read(spdifrx->regmap, STM32_SPDIFRX_IMR, &imr);  in stm32_spdifrx_isr()
689 	regmap_update_bits(spdifrx->regmap, STM32_SPDIFRX_IFCR,  in stm32_spdifrx_isr()
710 		regmap_update_bits(spdifrx->regmap, STM32_SPDIFRX_CR,  in stm32_spdifrx_isr()
730 		regmap_read(spdifrx->regmap, STM32_SPDIFRX_CR, &cr);  in stm32_spdifrx_isr()
736 		regmap_update_bits(spdifrx->regmap, STM32_SPDIFRX_CR,  in stm32_spdifrx_isr()
742 			regmap_update_bits(spdifrx->regmap, STM32_SPDIFRX_CR,  in stm32_spdifrx_isr()
747 		spin_lock(&spdifrx->irq_lock);  in stm32_spdifrx_isr()
748 		if (spdifrx->substream)  in stm32_spdifrx_isr()
749 			snd_pcm_stop(spdifrx->substream,  in stm32_spdifrx_isr()
751 		spin_unlock(&spdifrx->irq_lock);  in stm32_spdifrx_isr()
756 	spin_lock(&spdifrx->irq_lock);  in stm32_spdifrx_isr()
757 	if (err_xrun && spdifrx->substream)  in stm32_spdifrx_isr()
758 		snd_pcm_stop_xrun(spdifrx->substream);  in stm32_spdifrx_isr()
759 	spin_unlock(&spdifrx->irq_lock);  in stm32_spdifrx_isr()
767 	struct stm32_spdifrx_data *spdifrx = snd_soc_dai_get_drvdata(cpu_dai);  in stm32_spdifrx_startup()  local
771 	spin_lock_irqsave(&spdifrx->irq_lock, flags);  in stm32_spdifrx_startup()
772 	spdifrx->substream = substream;  in stm32_spdifrx_startup()
773 	spin_unlock_irqrestore(&spdifrx->irq_lock, flags);  in stm32_spdifrx_startup()
775 	ret = clk_prepare_enable(spdifrx->kclk);  in stm32_spdifrx_startup()
777 		dev_err(&spdifrx->pdev->dev, "Enable kclk failed: %d\n", ret);  in stm32_spdifrx_startup()
786 	struct stm32_spdifrx_data *spdifrx = snd_soc_dai_get_drvdata(cpu_dai);  in stm32_spdifrx_hw_params()  local
798 		dev_err(&spdifrx->pdev->dev, "Unexpected data format\n");  in stm32_spdifrx_hw_params()
807 	spdifrx->dma_params.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;  in stm32_spdifrx_hw_params()
808 	snd_soc_dai_init_dma_data(cpu_dai, NULL, &spdifrx->dma_params);  in stm32_spdifrx_hw_params()
810 	return regmap_update_bits(spdifrx->regmap, STM32_SPDIFRX_CR,  in stm32_spdifrx_hw_params()
818 	struct stm32_spdifrx_data *spdifrx = snd_soc_dai_get_drvdata(cpu_dai);  in stm32_spdifrx_trigger()  local
825 		regmap_update_bits(spdifrx->regmap, STM32_SPDIFRX_IMR,  in stm32_spdifrx_trigger()
828 		regmap_update_bits(spdifrx->regmap, STM32_SPDIFRX_CR,  in stm32_spdifrx_trigger()
831 		ret = stm32_spdifrx_start_sync(spdifrx);  in stm32_spdifrx_trigger()
836 		stm32_spdifrx_stop(spdifrx);  in stm32_spdifrx_trigger()
848 	struct stm32_spdifrx_data *spdifrx = snd_soc_dai_get_drvdata(cpu_dai);  in stm32_spdifrx_shutdown()  local
851 	spin_lock_irqsave(&spdifrx->irq_lock, flags);  in stm32_spdifrx_shutdown()
852 	spdifrx->substream = NULL;  in stm32_spdifrx_shutdown()
853 	spin_unlock_irqrestore(&spdifrx->irq_lock, flags);  in stm32_spdifrx_shutdown()
855 	clk_disable_unprepare(spdifrx->kclk);  in stm32_spdifrx_shutdown()
908 				  struct stm32_spdifrx_data *spdifrx)  in stm32_spdifrx_parse_of()  argument
919 		spdifrx->regmap_conf =  in stm32_spdifrx_parse_of()
924 	spdifrx->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);  in stm32_spdifrx_parse_of()
925 	if (IS_ERR(spdifrx->base))  in stm32_spdifrx_parse_of()
926 		return PTR_ERR(spdifrx->base);  in stm32_spdifrx_parse_of()
928 	spdifrx->phys_addr = res->start;  in stm32_spdifrx_parse_of()
930 	spdifrx->kclk = devm_clk_get(&pdev->dev, "kclk");  in stm32_spdifrx_parse_of()
931 	if (IS_ERR(spdifrx->kclk))  in stm32_spdifrx_parse_of()
932 		return dev_err_probe(&pdev->dev, PTR_ERR(spdifrx->kclk),  in stm32_spdifrx_parse_of()
935 	spdifrx->irq = platform_get_irq(pdev, 0);  in stm32_spdifrx_parse_of()
936 	if (spdifrx->irq < 0)  in stm32_spdifrx_parse_of()
937 		return spdifrx->irq;  in stm32_spdifrx_parse_of()
944 	struct stm32_spdifrx_data *spdifrx = platform_get_drvdata(pdev);  in stm32_spdifrx_remove()  local
946 	if (spdifrx->ctrl_chan)  in stm32_spdifrx_remove()
947 		dma_release_channel(spdifrx->ctrl_chan);  in stm32_spdifrx_remove()
949 	if (spdifrx->dmab)  in stm32_spdifrx_remove()
950 		snd_dma_free_pages(spdifrx->dmab);  in stm32_spdifrx_remove()
959 	struct stm32_spdifrx_data *spdifrx;  in stm32_spdifrx_probe()  local
965 	spdifrx = devm_kzalloc(&pdev->dev, sizeof(*spdifrx), GFP_KERNEL);  in stm32_spdifrx_probe()
966 	if (!spdifrx)  in stm32_spdifrx_probe()
969 	spdifrx->pdev = pdev;  in stm32_spdifrx_probe()
970 	init_completion(&spdifrx->cs_completion);  in stm32_spdifrx_probe()
971 	spin_lock_init(&spdifrx->lock);  in stm32_spdifrx_probe()
972 	spin_lock_init(&spdifrx->irq_lock);  in stm32_spdifrx_probe()
974 	platform_set_drvdata(pdev, spdifrx);  in stm32_spdifrx_probe()
976 	ret = stm32_spdifrx_parse_of(pdev, spdifrx);  in stm32_spdifrx_probe()
980 	spdifrx->regmap = devm_regmap_init_mmio_clk(&pdev->dev, "kclk",  in stm32_spdifrx_probe()
981 						    spdifrx->base,  in stm32_spdifrx_probe()
982 						    spdifrx->regmap_conf);  in stm32_spdifrx_probe()
983 	if (IS_ERR(spdifrx->regmap))  in stm32_spdifrx_probe()
984 		return dev_err_probe(&pdev->dev, PTR_ERR(spdifrx->regmap),  in stm32_spdifrx_probe()
987 	ret = devm_request_irq(&pdev->dev, spdifrx->irq, stm32_spdifrx_isr, 0,  in stm32_spdifrx_probe()
988 			       dev_name(&pdev->dev), spdifrx);  in stm32_spdifrx_probe()
1017 	ret = stm32_spdifrx_dma_ctrl_register(&pdev->dev, spdifrx);  in stm32_spdifrx_probe()
1021 	ret = regmap_read(spdifrx->regmap, STM32_SPDIFRX_IDR, &idr);  in stm32_spdifrx_probe()
1026 		ret = regmap_read(spdifrx->regmap, STM32_SPDIFRX_VERR, &ver);  in stm32_spdifrx_probe()
1050 	struct stm32_spdifrx_data *spdifrx = dev_get_drvdata(dev);  in stm32_spdifrx_suspend()  local
1052 	regcache_cache_only(spdifrx->regmap, true);  in stm32_spdifrx_suspend()
1053 	regcache_mark_dirty(spdifrx->regmap);  in stm32_spdifrx_suspend()
1060 	struct stm32_spdifrx_data *spdifrx = dev_get_drvdata(dev);  in stm32_spdifrx_resume()  local
1062 	regcache_cache_only(spdifrx->regmap, false);  in stm32_spdifrx_resume()
1064 	return regcache_sync(spdifrx->regmap);  in stm32_spdifrx_resume()