Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Ajit Kumar Pandey | 801 | 96.04% | 2 | 28.57% |
V Sujith Kumar Reddy | 20 | 2.40% | 1 | 14.29% |
Syed Saba kareem | 7 | 0.84% | 2 | 28.57% |
Jeff Johnson | 5 | 0.60% | 1 | 14.29% |
Julia Lawall | 1 | 0.12% | 1 | 14.29% |
Total | 834 | 7 |
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) // // This file is provided under a dual BSD/GPLv2 license. When using or // redistributing this file, you may do so under either license. // // Copyright(c) 2022 Advanced Micro Devices, Inc. // // Authors: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com> // Vijendar Mukunda <Vijendar.Mukunda@amd.com> // /* * Generic Hardware interface for ACP Audio PDM controller */ #include <linux/err.h> #include <linux/io.h> #include <linux/module.h> #include <linux/platform_device.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include <sound/soc-dai.h> #include "amd.h" #define DRV_NAME "acp-pdm" static int acp_dmic_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct acp_stream *stream = substream->runtime->private_data; struct device *dev = dai->component->dev; struct acp_dev_data *adata = dev_get_drvdata(dev); u32 physical_addr, size_dmic, period_bytes; unsigned int dmic_ctrl; /* Enable default DMIC clk */ writel(PDM_CLK_FREQ_MASK, adata->acp_base + ACP_WOV_CLK_CTRL); dmic_ctrl = readl(adata->acp_base + ACP_WOV_MISC_CTRL); dmic_ctrl |= PDM_MISC_CTRL_MASK; writel(dmic_ctrl, adata->acp_base + ACP_WOV_MISC_CTRL); period_bytes = frames_to_bytes(substream->runtime, substream->runtime->period_size); size_dmic = frames_to_bytes(substream->runtime, substream->runtime->buffer_size); physical_addr = stream->reg_offset + MEM_WINDOW_START; /* Init DMIC Ring buffer */ writel(physical_addr, adata->acp_base + ACP_WOV_RX_RINGBUFADDR); writel(size_dmic, adata->acp_base + ACP_WOV_RX_RINGBUFSIZE); writel(period_bytes, adata->acp_base + ACP_WOV_RX_INTR_WATERMARK_SIZE); writel(0x01, adata->acp_base + ACPAXI2AXI_ATU_CTRL); return 0; } static int acp_dmic_dai_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { struct device *dev = dai->component->dev; struct acp_dev_data *adata = dev_get_drvdata(dev); unsigned int dma_enable; int ret = 0; switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: dma_enable = readl(adata->acp_base + ACP_WOV_PDM_DMA_ENABLE); if (!(dma_enable & DMA_EN_MASK)) { writel(PDM_ENABLE, adata->acp_base + ACP_WOV_PDM_ENABLE); writel(PDM_ENABLE, adata->acp_base + ACP_WOV_PDM_DMA_ENABLE); } ret = readl_poll_timeout_atomic(adata->acp_base + ACP_WOV_PDM_DMA_ENABLE, dma_enable, (dma_enable & DMA_EN_MASK), DELAY_US, PDM_TIMEOUT); break; case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: case SNDRV_PCM_TRIGGER_PAUSE_PUSH: dma_enable = readl(adata->acp_base + ACP_WOV_PDM_DMA_ENABLE); if ((dma_enable & DMA_EN_MASK)) { writel(PDM_DISABLE, adata->acp_base + ACP_WOV_PDM_ENABLE); writel(PDM_DISABLE, adata->acp_base + ACP_WOV_PDM_DMA_ENABLE); } ret = readl_poll_timeout_atomic(adata->acp_base + ACP_WOV_PDM_DMA_ENABLE, dma_enable, !(dma_enable & DMA_EN_MASK), DELAY_US, PDM_TIMEOUT); break; default: ret = -EINVAL; break; } return ret; } static int acp_dmic_hwparams(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hwparams, struct snd_soc_dai *dai) { struct device *dev = dai->component->dev; struct acp_dev_data *adata = dev_get_drvdata(dev); unsigned int channels, ch_mask; channels = params_channels(hwparams); switch (channels) { case 2: ch_mask = 0; break; case 4: ch_mask = 1; break; case 6: ch_mask = 2; break; default: dev_err(dev, "Invalid channels %d\n", channels); return -EINVAL; } adata->ch_mask = ch_mask; if (params_format(hwparams) != SNDRV_PCM_FORMAT_S32_LE) { dev_err(dai->dev, "Invalid format:%d\n", params_format(hwparams)); return -EINVAL; } writel(ch_mask, adata->acp_base + ACP_WOV_PDM_NO_OF_CHANNELS); writel(PDM_DEC_64, adata->acp_base + ACP_WOV_PDM_DECIMATION_FACTOR); return 0; } static int acp_dmic_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct acp_stream *stream = substream->runtime->private_data; struct device *dev = dai->component->dev; struct acp_dev_data *adata = dev_get_drvdata(dev); u32 ext_int_ctrl; stream->dai_id = DMIC_INSTANCE; stream->irq_bit = BIT(PDM_DMA_STAT); stream->pte_offset = ACP_SRAM_PDM_PTE_OFFSET; stream->reg_offset = ACP_REGION2_OFFSET; /* Enable DMIC Interrupts */ ext_int_ctrl = readl(ACP_EXTERNAL_INTR_CNTL(adata, 0)); ext_int_ctrl |= PDM_DMA_INTR_MASK; writel(ext_int_ctrl, ACP_EXTERNAL_INTR_CNTL(adata, 0)); return 0; } static void acp_dmic_dai_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct device *dev = dai->component->dev; struct acp_dev_data *adata = dev_get_drvdata(dev); u32 ext_int_ctrl; /* Disable DMIC interrupts */ ext_int_ctrl = readl(ACP_EXTERNAL_INTR_CNTL(adata, 0)); ext_int_ctrl &= ~PDM_DMA_INTR_MASK; writel(ext_int_ctrl, ACP_EXTERNAL_INTR_CNTL(adata, 0)); } const struct snd_soc_dai_ops acp_dmic_dai_ops = { .prepare = acp_dmic_prepare, .hw_params = acp_dmic_hwparams, .trigger = acp_dmic_dai_trigger, .startup = acp_dmic_dai_startup, .shutdown = acp_dmic_dai_shutdown, }; EXPORT_SYMBOL_NS_GPL(acp_dmic_dai_ops, SND_SOC_ACP_COMMON); MODULE_DESCRIPTION("AMD ACP Audio PDM controller"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_ALIAS(DRV_NAME);
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