252 lines
5.9 KiB
C
252 lines
5.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2019 MediaTek Inc.
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* Author: Michael Hsiao <michael.hsiao@mediatek.com>
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*/
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/*******************************************************************************
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*
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* Filename:
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* ---------
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* mt6583.c
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*
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* Project:
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* --------
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* MT6583 Audio Driver Kernel Function
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*
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* Description:
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* ------------
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* Audio register
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*
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* Author:
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* -------
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* Chipeng Chang
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*
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*------------------------------------------------------------------------------
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*
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*
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******************************************************************************
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*/
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/*****************************************************************************
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* C O M P I L E R F L A G S
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*****************************************************************************/
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/*****************************************************************************
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* E X T E R N A L R E F E R E N C E S
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*****************************************************************************/
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#include "mtk-auddrv-afe.h"
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#include "mtk-auddrv-ana.h"
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#include "mtk-auddrv-clk.h"
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#include "mtk-auddrv-common.h"
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#include "mtk-auddrv-def.h"
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#include "mtk-auddrv-kernel.h"
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#include "mtk-soc-afe-control.h"
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#include "mtk-soc-pcm-common.h"
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#include "mtk-soc-pcm-platform.h"
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#include <linux/dma-mapping.h>
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/*
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* function implementation
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*/
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static int mtk_dummy_probe(struct platform_device *pdev);
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static int mtk_dummypcm_close(struct snd_pcm_substream *substream);
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static int mtk_afe_dummy_component_probe(struct snd_soc_component *component);
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static struct snd_pcm_hardware mtk_dummy_hardware = {
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.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_RESUME | SNDRV_PCM_INFO_MMAP_VALID),
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.formats = SND_SOC_ADV_MT_FMTS,
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.rates = SOC_HIGH_USE_RATE,
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.rate_min = SOC_HIGH_USE_RATE_MIN,
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.rate_max = SOC_HIGH_USE_RATE_MAX,
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.channels_min = SOC_NORMAL_USE_CHANNELS_MIN,
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.channels_max = SOC_NORMAL_USE_CHANNELS_MAX,
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.buffer_bytes_max = SOC_NORMAL_USE_BUFFERSIZE_MAX,
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.period_bytes_max = SOC_NORMAL_USE_BUFFERSIZE_MAX,
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.periods_min = SOC_NORMAL_USE_PERIODS_MIN,
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.periods_max = SOC_NORMAL_USE_PERIODS_MAX,
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.fifo_size = 0,
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};
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static int mtk_pcm_open(struct snd_pcm_substream *substream)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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runtime->hw = mtk_dummy_hardware;
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return 0;
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}
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static int mtk_dummypcm_close(struct snd_pcm_substream *substream)
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{
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return 0;
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}
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static int mtk_dummypcm_trigger(struct snd_pcm_substream *substream, int cmd)
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{
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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case SNDRV_PCM_TRIGGER_RESUME:
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case SNDRV_PCM_TRIGGER_STOP:
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case SNDRV_PCM_TRIGGER_SUSPEND:
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break;
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}
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return -EINVAL;
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}
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static int mtk_pcm_copy(struct snd_pcm_substream *substream,
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int channel,
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unsigned long pos,
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void __user *buf,
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unsigned long bytes)
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{
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return 0;
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}
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static int mtk_pcm_silence(struct snd_pcm_substream *substream,
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int channel,
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unsigned long pos,
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unsigned long bytes)
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{
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return 0; /* do nothing */
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}
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static void *dummy_page[2];
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static struct page *mtk_pcm_page(struct snd_pcm_substream *substream,
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unsigned long offset)
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{
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return virt_to_page(dummy_page[substream->stream]); /* the same page */
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}
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static int mtk_pcm_prepare(struct snd_pcm_substream *substream)
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{
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return 0;
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}
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static int mtk_pcm_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *hw_params)
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{
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int ret = 0;
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return ret;
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}
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static int mtk_dummy_pcm_hw_free(struct snd_pcm_substream *substream)
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{
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return snd_pcm_lib_free_pages(substream);
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}
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static struct snd_pcm_ops mtk_afe_ops = {
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.open = mtk_pcm_open,
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.close = mtk_dummypcm_close,
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.ioctl = snd_pcm_lib_ioctl,
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.hw_params = mtk_pcm_hw_params,
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.hw_free = mtk_dummy_pcm_hw_free,
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.prepare = mtk_pcm_prepare,
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.trigger = mtk_dummypcm_trigger,
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.copy_user = mtk_pcm_copy,
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.fill_silence = mtk_pcm_silence,
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.page = mtk_pcm_page,
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};
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static const struct snd_soc_component_driver mtk_soc_dummy_component = {
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.name = AFE_PCM_NAME,
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.ops = &mtk_afe_ops,
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.probe = mtk_afe_dummy_component_probe,
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};
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static int mtk_dummy_probe(struct platform_device *pdev)
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{
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pr_debug("%s\n", __func__);
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pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
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if (!pdev->dev.dma_mask)
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pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
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if (pdev->dev.of_node)
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dev_set_name(&pdev->dev, "%s", MT_SOC_DUMMY_PCM);
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pdev->name = pdev->dev.kobj.name;
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pr_debug("%s: dev name %s\n", __func__, dev_name(&pdev->dev));
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return snd_soc_register_component(&pdev->dev,
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&mtk_soc_dummy_component,
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NULL,
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0);
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}
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static int mtk_afe_dummy_component_probe(struct snd_soc_component *component)
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{
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pr_debug("%s\n", __func__);
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return 0;
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}
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static int mtk_afedummy_remove(struct platform_device *pdev)
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{
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snd_soc_unregister_component(&pdev->dev);
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return 0;
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}
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#ifdef CONFIG_OF
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static const struct of_device_id mt_soc_pcm_dummy_of_ids[] = {
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{
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.compatible = "mediatek,mt_soc_pcm_dummy",
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},
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{} };
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#endif
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static struct platform_driver mtk_afedummy_driver = {
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.driver = {
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.name = MT_SOC_DUMMY_PCM,
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.owner = THIS_MODULE,
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#ifdef CONFIG_OF
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.of_match_table = mt_soc_pcm_dummy_of_ids,
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#endif
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},
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.probe = mtk_dummy_probe,
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.remove = mtk_afedummy_remove,
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};
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#ifndef CONFIG_OF
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static struct platform_device *soc_mtkafe_dummy_dev;
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#endif
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static int __init mtk_soc_dummy_platform_init(void)
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{
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int ret = 0;
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pr_debug("%s\n", __func__);
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#ifndef CONFIG_OF
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soc_mtkafe_dummy_dev = platform_device_alloc(MT_SOC_DUMMY_PCM, -1);
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if (!soc_mtkafe_dummy_dev)
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return -ENOMEM;
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ret = platform_device_add(soc_mtkafe_dummy_dev);
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if (ret != 0) {
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platform_device_put(soc_mtkafe_dummy_dev);
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return ret;
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}
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#endif
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ret = platform_driver_register(&mtk_afedummy_driver);
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return ret;
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}
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module_init(mtk_soc_dummy_platform_init);
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static void __exit mtk_soc_dummy_platform_exit(void)
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{
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platform_driver_unregister(&mtk_afedummy_driver);
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}
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module_exit(mtk_soc_dummy_platform_exit);
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MODULE_DESCRIPTION("AFE PCM module platform driver");
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MODULE_LICENSE("GPL");
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