amd/ps/ps-pdm-dma.c

157 static void acp63_config_dma(struct pdm_stream_instance *rtd, int direction)
163 	addr = rtd->dma_addr;
167 	writel(ACP_SRAM_PTE_OFFSET | BIT(31), rtd->acp63_base + ACPAXI2AXI_ATU_BASE_ADDR_GRP_1);
168 	writel(PAGE_SIZE_4K_ENABLE, rtd->acp63_base + ACPAXI2AXI_ATU_PAGE_SIZE_GRP_1);
169 	for (page_idx = 0; page_idx < rtd->num_pages; page_idx++) {
174 		writel(low, rtd->acp63_base + ACP_SCRATCH_REG_0 + val);
176 		writel(high, rtd->acp63_base + ACP_SCRATCH_REG_0 + val + 4);
221 	struct pdm_stream_instance *rtd;
224 	rtd = substream->runtime->private_data;
225 	if (!rtd)
229 	rtd->dma_addr = substream->runtime->dma_addr;
230 	rtd->num_pages = (PAGE_ALIGN(size) >> PAGE_SHIFT);
231 	acp63_config_dma(rtd, substream->stream);
233 				   period_bytes, rtd->acp63_base);
237 static u64 acp63_pdm_get_byte_count(struct pdm_stream_instance *rtd,
243 	high = readl(rtd->acp63_base + ACP_WOV_RX_LINEARPOSITIONCNTR_HIGH);
245 	low = readl(rtd->acp63_base + ACP_WOV_RX_LINEARPOSITIONCNTR_LOW);
253 	struct pdm_stream_instance *rtd;
257 	rtd = stream->runtime->private_data;
260 	bytescount = acp63_pdm_get_byte_count(rtd, stream->stream);
261 	if (bytescount > rtd->bytescount)
262 		bytescount -= rtd->bytescount;
268 			     struct snd_soc_pcm_runtime *rtd)
272 	snd_pcm_set_managed_buffer_all(rtd->pcm, SNDRV_DMA_TYPE_DEV,
292 	struct pdm_stream_instance *rtd;
297 	rtd = substream->runtime->private_data;
310 		writel(ch_mask, rtd->acp63_base + ACP_WOV_PDM_NO_OF_CHANNELS);
311 		writel(PDM_DECIMATION_FACTOR, rtd->acp63_base + ACP_WOV_PDM_DECIMATION_FACTOR);
312 		rtd->bytescount = acp63_pdm_get_byte_count(rtd, substream->stream);
313 		pdm_status = acp63_check_pdm_dma_status(rtd->acp63_base);
315 			ret = acp63_start_pdm_dma(rtd->acp63_base);
320 		pdm_status = acp63_check_pdm_dma_status(rtd->acp63_base);
322 			ret = acp63_stop_pdm_dma(rtd->acp63_base);
409 	struct pdm_stream_instance *rtd;
415 		rtd = runtime->private_data;
418 		acp63_config_dma(rtd, SNDRV_PCM_STREAM_CAPTURE);