577 lines
16 KiB
C
577 lines
16 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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* mtk_pcm_bt_dai.c
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*
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* Project:
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* --------
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* Audio Driver Kernel Function
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*
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* Description:
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* ------------
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* Audio bt to dai capture
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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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* 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-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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/* information about */
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static struct afe_mem_control_t *Bt_Dai_Control_context;
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static struct snd_dma_buffer *Bt_Dai_Capture_dma_buf;
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static DEFINE_SPINLOCK(auddrv_BTDaiInCtl_lock);
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/*
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* function implementation
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*/
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static void StartAudioBtDaiHardware(struct snd_pcm_substream *substream);
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static void StopAudioBtDaiHardware(struct snd_pcm_substream *substream);
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static int mtk_bt_dai_probe(struct platform_device *pdev);
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static int mtk_bt_dai_pcm_close(struct snd_pcm_substream *substream);
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static int mtk_asoc_bt_dai_component_probe(struct snd_soc_component *component);
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static struct snd_pcm_hardware mtk_btdai_hardware = {
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.info = (SNDRV_PCM_INFO_INTERLEAVED),
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.formats = SND_SOC_STD_MT_FMTS,
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.rates = SOC_NORMAL_USE_RATE,
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.rate_min = SOC_NORMAL_USE_RATE_MIN,
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.rate_max = SOC_NORMAL_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 = BT_DAI_MAX_BUFFER_SIZE,
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.period_bytes_max = BT_DAI_MAX_BUFFER_SIZE,
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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 void StopAudioBtDaiHardware(struct snd_pcm_substream *substream)
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{
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pr_debug("StopAudioBtDaiHardware\n");
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/* here to set interrupt */
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irq_remove_user(substream,
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irq_request_number(Soc_Aud_Digital_Block_MEM_DAI));
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/* here to turn off digital part */
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SetIntfConnection(Soc_Aud_InterCon_DisConnect,
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Soc_Aud_AFE_IO_Block_DAI_BT_IN,
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Soc_Aud_AFE_IO_Block_MEM_DAI);
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EnableAfe(false);
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}
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static bool SetVoipDAIBTAttribute(int sample_rate)
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{
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struct audio_digital_dai_bt daibt_attribute;
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memset_io((void *)&daibt_attribute, 0, sizeof(daibt_attribute));
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#if 0 /* temp for merge only support */
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daibt_attribute.mUSE_MRGIF_INPUT = Soc_Aud_BT_DAI_INPUT_FROM_BT;
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#else
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daibt_attribute.mUSE_MRGIF_INPUT = Soc_Aud_BT_DAI_INPUT_FROM_MGRIF;
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#endif
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daibt_attribute.mDAI_BT_MODE = (sample_rate == 8000)
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? Soc_Aud_DATBT_MODE_Mode8K
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: Soc_Aud_DATBT_MODE_Mode16K;
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daibt_attribute.mDAI_DEL =
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Soc_Aud_DAI_DEL_HighWord; /* suggest always HighWord */
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daibt_attribute.mBT_LEN = 0;
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daibt_attribute.mDATA_RDY = true;
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daibt_attribute.mBT_SYNC = Soc_Aud_BTSYNC_Short_Sync;
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daibt_attribute.mBT_ON = true;
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daibt_attribute.mDAIBT_ON = false;
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SetDaiBt(&daibt_attribute);
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return true;
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}
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static void StartAudioBtDaiHardware(struct snd_pcm_substream *substream)
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{
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/* here to set interrupt */
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irq_add_user(substream,
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irq_request_number(Soc_Aud_Digital_Block_MEM_DAI),
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substream->runtime->rate, substream->runtime->period_size);
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SetSampleRate(Soc_Aud_Digital_Block_MEM_DAI, substream->runtime->rate);
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SetMemoryPathEnable(Soc_Aud_Digital_Block_MEM_DAI, true);
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/* here to turn off digital part */
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SetIntfConnection(Soc_Aud_InterCon_Connection,
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Soc_Aud_AFE_IO_Block_DAI_BT_IN,
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Soc_Aud_AFE_IO_Block_MEM_DAI);
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if (GetMemoryPathEnable(Soc_Aud_Digital_Block_DAI_BT) == false) {
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SetMemoryPathEnable(Soc_Aud_Digital_Block_DAI_BT, true);
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SetVoipDAIBTAttribute(substream->runtime->rate);
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SetDaiBtEnable(true);
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} else {
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SetMemoryPathEnable(Soc_Aud_Digital_Block_DAI_BT, true);
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}
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EnableAfe(true);
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}
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static int mtk_bt_dai_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_bt_dai_alsa_stop(struct snd_pcm_substream *substream)
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{
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SetMemoryPathEnable(Soc_Aud_Digital_Block_MEM_DAI, false);
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SetMemoryPathEnable(Soc_Aud_Digital_Block_DAI_BT, false);
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if (GetMemoryPathEnable(Soc_Aud_Digital_Block_DAI_BT) == false)
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SetDaiBtEnable(false);
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StopAudioBtDaiHardware(substream);
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RemoveMemifSubStream(Soc_Aud_Digital_Block_MEM_DAI, substream);
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return 0;
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}
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static snd_pcm_uframes_t
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mtk_bt_dai_pcm_pointer(struct snd_pcm_substream *substream)
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{
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struct afe_block_t *Dai_Block = &(Bt_Dai_Control_context->rBlock);
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kal_uint32 Frameidx = 0;
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/* get total bytes to copy */
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Frameidx = audio_bytes_to_frame(substream, Dai_Block->u4WriteIdx);
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return Frameidx;
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}
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static int mtk_bt_dai_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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struct snd_pcm_runtime *runtime = substream->runtime;
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struct snd_dma_buffer *dma_buf = &substream->dma_buffer;
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int ret = 0;
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dma_buf->dev.type = SNDRV_DMA_TYPE_DEV;
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dma_buf->dev.dev = substream->pcm->card->dev;
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dma_buf->private_data = NULL;
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if (Bt_Dai_Capture_dma_buf->area) {
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pr_debug("Bt_Dai_Capture_dma_buf->area\n");
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runtime->dma_bytes = params_buffer_bytes(hw_params);
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runtime->dma_area = Bt_Dai_Capture_dma_buf->area;
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runtime->dma_addr = Bt_Dai_Capture_dma_buf->addr;
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SetHighAddr(Soc_Aud_Digital_Block_MEM_DAI, true,
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runtime->dma_addr);
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} else {
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pr_debug("snd_pcm_lib_malloc_pages\n");
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ret = snd_pcm_lib_malloc_pages(substream,
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params_buffer_bytes(hw_params));
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}
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pr_debug("dma_bytes = %zu dma_area = %p dma_addr = 0x%lx\n",
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runtime->dma_bytes, runtime->dma_area, (long)runtime->dma_addr);
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set_mem_block(substream, hw_params, Bt_Dai_Control_context,
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Soc_Aud_Digital_Block_MEM_DAI);
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AudDrv_Emi_Clk_On();
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return ret;
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}
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static int mtk_bt_dai_capture_pcm_hw_free(struct snd_pcm_substream *substream)
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{
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AudDrv_Emi_Clk_Off();
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if (Bt_Dai_Capture_dma_buf->area)
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return 0;
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else
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return snd_pcm_lib_free_pages(substream);
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}
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static struct snd_pcm_hw_constraint_list bt_dai_constraints_sample_rates = {
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.count = ARRAY_SIZE(soc_voice_supported_sample_rates),
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.list = soc_voice_supported_sample_rates,
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};
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static int mtk_bt_dai_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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int ret = 0;
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pr_debug("stream %d\n", substream->stream);
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Bt_Dai_Control_context =
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Get_Mem_ControlT(Soc_Aud_Digital_Block_MEM_DAI);
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runtime->hw = mtk_btdai_hardware;
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memcpy((void *)(&(runtime->hw)), (void *)&mtk_btdai_hardware,
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sizeof(struct snd_pcm_hardware));
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ret = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
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&bt_dai_constraints_sample_rates);
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ret = snd_pcm_hw_constraint_integer(runtime,
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SNDRV_PCM_HW_PARAM_PERIODS);
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if (ret < 0)
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pr_debug("failed\n");
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AudDrv_Clk_On();
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/* print for hw pcm information */
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runtime->hw.info |= SNDRV_PCM_INFO_INTERLEAVED;
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runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED;
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if (ret < 0) {
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pr_err("bt_dai_pcm_close\n");
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mtk_bt_dai_pcm_close(substream);
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return ret;
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}
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return 0;
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}
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static int mtk_bt_dai_pcm_close(struct snd_pcm_substream *substream)
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{
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AudDrv_Clk_Off();
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return 0;
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}
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static int mtk_bt_dai_alsa_start(struct snd_pcm_substream *substream)
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{
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SetMemifSubStream(Soc_Aud_Digital_Block_MEM_DAI, substream);
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StartAudioBtDaiHardware(substream);
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return 0;
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}
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static int mtk_bt_dai_pcm_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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return mtk_bt_dai_alsa_start(substream);
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case SNDRV_PCM_TRIGGER_STOP:
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case SNDRV_PCM_TRIGGER_SUSPEND:
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return mtk_bt_dai_alsa_stop(substream);
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}
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return -EINVAL;
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}
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static bool CheckNullPointer(void *pointer)
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{
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if (pointer == NULL) {
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pr_err("%s(), pointer = NULL\n", __func__);
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return true;
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}
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return false;
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}
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static int mtk_bt_dai_pcm_copy(struct snd_pcm_substream *substream, int channel,
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unsigned long pos, void __user *buf,
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unsigned long bytes)
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{
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struct afe_mem_control_t *pDAI_MEM_ConTrol = NULL;
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struct afe_block_t *Dai_Block = NULL;
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char *Read_Data_Ptr = (char *)buf;
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ssize_t DMA_Read_Ptr = 0, read_size = 0, read_count = 0;
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unsigned long flags;
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unsigned int count = 0;
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#if defined(AUD_DEBUG_LOG)
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pr_debug("%s(), pos = %lu, bytes = %lu\n", __func__, pos, bytes);
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#endif
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/* get total bytes to copy */
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count = word_size_align(bytes);
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/* check which memif nned to be write */
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pDAI_MEM_ConTrol = Bt_Dai_Control_context;
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Dai_Block = &(pDAI_MEM_ConTrol->rBlock);
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if (pDAI_MEM_ConTrol == NULL) {
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pr_err("cannot find MEM control !!!!!!!\n");
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msleep(50);
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return 0;
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}
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if (Dai_Block->u4BufferSize <= 0) {
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msleep(50);
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return 0;
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}
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if (CheckNullPointer((void *)Dai_Block->pucVirtBufAddr)) {
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pr_err("CheckNullPointer pucVirtBufAddr = %p\n",
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Dai_Block->pucVirtBufAddr);
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return 0;
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}
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spin_lock_irqsave(&auddrv_BTDaiInCtl_lock, flags);
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if (Dai_Block->u4DataRemained > Dai_Block->u4BufferSize) {
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pr_warn("%s(), u4DataRemained 0x%x > u4BufferSize 0x%x",
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__func__, Dai_Block->u4DataRemained,
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Dai_Block->u4BufferSize);
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Dai_Block->u4DataRemained = 0;
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Dai_Block->u4DMAReadIdx = Dai_Block->u4WriteIdx;
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}
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if (count > Dai_Block->u4DataRemained)
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read_size = Dai_Block->u4DataRemained;
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else
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read_size = count;
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DMA_Read_Ptr = Dai_Block->u4DMAReadIdx;
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spin_unlock_irqrestore(&auddrv_BTDaiInCtl_lock, flags);
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if (DMA_Read_Ptr + read_size < Dai_Block->u4BufferSize) {
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if (DMA_Read_Ptr != Dai_Block->u4DMAReadIdx) {
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pr_warn("%s 1, rsize:%zu, Remained:0x%x,Read_Ptr:%zu,DIdx:%x\n",
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__func__, read_size, Dai_Block->u4DataRemained,
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DMA_Read_Ptr, Dai_Block->u4DMAReadIdx);
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}
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if (copy_to_user((void __user *)Read_Data_Ptr,
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(Dai_Block->pucVirtBufAddr + DMA_Read_Ptr),
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read_size)) {
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pr_err("%s Fail 1 copy to user Read_Data_Ptr:%p, pucVirtBufAddr:%p, u4DMAReadIdx:0x%x",
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__func__, Read_Data_Ptr,
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Dai_Block->pucVirtBufAddr,
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Dai_Block->u4DMAReadIdx);
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pr_err("%s Fail 1 copy to user DMA_Read_Ptr:%zu,read_size:%zu",
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__func__, DMA_Read_Ptr, read_size);
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return 0;
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}
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read_count += read_size;
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spin_lock(&auddrv_BTDaiInCtl_lock);
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Dai_Block->u4DataRemained -= read_size;
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Dai_Block->u4DMAReadIdx += read_size;
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Dai_Block->u4DMAReadIdx %= Dai_Block->u4BufferSize;
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DMA_Read_Ptr = Dai_Block->u4DMAReadIdx;
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spin_unlock(&auddrv_BTDaiInCtl_lock);
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Read_Data_Ptr += read_size;
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count -= read_size;
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#if defined(AUD_DEBUG_LOG)
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pr_debug(
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"%s f 1,size:%zd,RIdx:%x,WIdx:%x,Remain%x\n",
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__func__, read_size, Dai_Block->u4DMAReadIdx,
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Dai_Block->u4WriteIdx, Dai_Block->u4DataRemained);
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#endif
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}
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else {
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unsigned int size_1 = Dai_Block->u4BufferSize - DMA_Read_Ptr;
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unsigned int size_2 = read_size - size_1;
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if (DMA_Read_Ptr != Dai_Block->u4DMAReadIdx) {
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pr_warn("%s 2, read_size1:0x%x,DataRemained:0x%x, DMA_Read_Ptr:%zu, DMAReadIdx:0x%x \r\n",
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__func__, size_1, Dai_Block->u4DataRemained,
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DMA_Read_Ptr, Dai_Block->u4DMAReadIdx);
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}
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if (copy_to_user((void __user *)Read_Data_Ptr,
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(Dai_Block->pucVirtBufAddr + DMA_Read_Ptr),
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size_1)) {
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pr_warn("%s Fail 2 copy to user Ptr:%p,VirtAddr:%p, ReadIdx:0x%x, Read_Ptr:%zu,read_size:%zu",
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__func__, Read_Data_Ptr,
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Dai_Block->pucVirtBufAddr,
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Dai_Block->u4DMAReadIdx, DMA_Read_Ptr,
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read_size);
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return 0;
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}
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read_count += size_1;
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spin_lock(&auddrv_BTDaiInCtl_lock);
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Dai_Block->u4DataRemained -= size_1;
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Dai_Block->u4DMAReadIdx += size_1;
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Dai_Block->u4DMAReadIdx %= Dai_Block->u4BufferSize;
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DMA_Read_Ptr = Dai_Block->u4DMAReadIdx;
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spin_unlock(&auddrv_BTDaiInCtl_lock);
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#if defined(AUD_DEBUG_LOG)
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pr_debug(
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"%s finish2, copy size_1:0x%x,u4DMAReadIdx:0x%x, u4WriteIdx:0x%x, Remained:0x%x \r\n",
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__func__, size_1, Dai_Block->u4DMAReadIdx,
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Dai_Block->u4WriteIdx, Dai_Block->u4DataRemained);
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#endif
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if (DMA_Read_Ptr != Dai_Block->u4DMAReadIdx) {
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pr_warn("%s 3, read_size2:%x,Remained:%x, Read_Ptr:%zu, ReadIdx:%x \r\n",
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__func__, size_2, Dai_Block->u4DataRemained,
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DMA_Read_Ptr, Dai_Block->u4DMAReadIdx);
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}
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if (copy_to_user((void __user *)(Read_Data_Ptr + size_1),
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(Dai_Block->pucVirtBufAddr + DMA_Read_Ptr),
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size_2)) {
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pr_warn("%s Fail 3 copy to user Ptr:%p,VirtAddr:%p, ReadIdx:0x%x , Ptr:%zu,read_size:%zu",
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__func__, Read_Data_Ptr,
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Dai_Block->pucVirtBufAddr,
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Dai_Block->u4DMAReadIdx, DMA_Read_Ptr,
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read_size);
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return read_count << 2;
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}
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read_count += size_2;
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spin_lock(&auddrv_BTDaiInCtl_lock);
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Dai_Block->u4DataRemained -= size_2;
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Dai_Block->u4DMAReadIdx += size_2;
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DMA_Read_Ptr = Dai_Block->u4DMAReadIdx;
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spin_unlock(&auddrv_BTDaiInCtl_lock);
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count -= read_size;
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Read_Data_Ptr += read_size;
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#if defined(AUD_DEBUG_LOG)
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pr_debug(
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"%s finish3, copy size_2:0x%x,ReadIdx:0x%x, WriteIdx:0x%x Remained:0x%x \r\n",
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__func__, size_2, Dai_Block->u4DMAReadIdx,
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Dai_Block->u4WriteIdx, Dai_Block->u4DataRemained);
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#endif
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}
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return count;
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}
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static int mtk_bt_dai_capture_pcm_silence(struct snd_pcm_substream *substream,
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int channel,
|
|
unsigned long pos,
|
|
unsigned long bytes)
|
|
{
|
|
return 0; /* do nothing */
|
|
}
|
|
|
|
static void *dummy_page[2];
|
|
|
|
static struct page *
|
|
mtk_bt_dai_capture_pcm_page(struct snd_pcm_substream *substream,
|
|
unsigned long offset)
|
|
{
|
|
return virt_to_page(dummy_page[substream->stream]); /* the same page */
|
|
}
|
|
|
|
static struct snd_pcm_ops mtk_bt_dai_ops = {
|
|
.open = mtk_bt_dai_pcm_open,
|
|
.close = mtk_bt_dai_pcm_close,
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
.hw_params = mtk_bt_dai_pcm_hw_params,
|
|
.hw_free = mtk_bt_dai_capture_pcm_hw_free,
|
|
.prepare = mtk_bt_dai_pcm_prepare,
|
|
.trigger = mtk_bt_dai_pcm_trigger,
|
|
.pointer = mtk_bt_dai_pcm_pointer,
|
|
.copy_user = mtk_bt_dai_pcm_copy,
|
|
.fill_silence = mtk_bt_dai_capture_pcm_silence,
|
|
.page = mtk_bt_dai_capture_pcm_page,
|
|
};
|
|
|
|
static struct snd_soc_component_driver mtk_bt_dai_soc_component = {
|
|
.name = AFE_PCM_NAME,
|
|
.ops = &mtk_bt_dai_ops,
|
|
.probe = mtk_asoc_bt_dai_component_probe,
|
|
};
|
|
|
|
static int mtk_bt_dai_probe(struct platform_device *pdev)
|
|
{
|
|
pr_debug("mtk_bt_dai_probe\n");
|
|
|
|
pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
|
|
if (!pdev->dev.dma_mask)
|
|
pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
|
|
|
|
if (pdev->dev.of_node)
|
|
dev_set_name(&pdev->dev, "%s", MT_SOC_VOIP_BT_IN);
|
|
pdev->name = pdev->dev.kobj.name;
|
|
|
|
pr_debug("%s: dev name %s\n", __func__, dev_name(&pdev->dev));
|
|
return snd_soc_register_component(&pdev->dev,
|
|
&mtk_bt_dai_soc_component,
|
|
NULL,
|
|
0);
|
|
}
|
|
|
|
static int mtk_asoc_bt_dai_component_probe(struct snd_soc_component *component)
|
|
{
|
|
pr_debug("%s()\n", __func__);
|
|
AudDrv_Allocate_mem_Buffer(component->dev, Soc_Aud_Digital_Block_MEM_DAI,
|
|
BT_DAI_MAX_BUFFER_SIZE);
|
|
Bt_Dai_Capture_dma_buf = Get_Mem_Buffer(Soc_Aud_Digital_Block_MEM_DAI);
|
|
return 0;
|
|
}
|
|
|
|
static int mtk_bt_dai_remove(struct platform_device *pdev)
|
|
{
|
|
snd_soc_unregister_component(&pdev->dev);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_OF
|
|
static const struct of_device_id mt_soc_pcm_bt_dai_of_ids[] = {
|
|
{
|
|
.compatible = "mediatek,mt_soc_pcm_bt_dai",
|
|
},
|
|
{} };
|
|
#endif
|
|
|
|
static struct platform_driver mtk_bt_dai_capture_driver = {
|
|
.driver = {
|
|
|
|
.name = MT_SOC_VOIP_BT_IN,
|
|
.owner = THIS_MODULE,
|
|
#ifdef CONFIG_OF
|
|
.of_match_table = mt_soc_pcm_bt_dai_of_ids,
|
|
#endif
|
|
},
|
|
.probe = mtk_bt_dai_probe,
|
|
.remove = mtk_bt_dai_remove,
|
|
};
|
|
|
|
#ifndef CONFIG_OF
|
|
static struct platform_device *soc_bt_dai_capture_dev;
|
|
#endif
|
|
|
|
static int __init mtk_soc_bt_dai_platform_init(void)
|
|
{
|
|
int ret = 0;
|
|
|
|
pr_debug("%s\n", __func__);
|
|
#ifndef CONFIG_OF
|
|
soc_bt_dai_capture_dev = platform_device_alloc(MT_SOC_VOIP_BT_IN, -1);
|
|
if (!soc_bt_dai_capture_dev)
|
|
return -ENOMEM;
|
|
|
|
ret = platform_device_add(soc_bt_dai_capture_dev);
|
|
if (ret != 0) {
|
|
platform_device_put(soc_bt_dai_capture_dev);
|
|
return ret;
|
|
}
|
|
#endif
|
|
ret = platform_driver_register(&mtk_bt_dai_capture_driver);
|
|
return ret;
|
|
}
|
|
|
|
static void __exit mtk_soc_bt_dai_platform_exit(void)
|
|
{
|
|
platform_driver_unregister(&mtk_bt_dai_capture_driver);
|
|
}
|
|
module_init(mtk_soc_bt_dai_platform_init);
|
|
module_exit(mtk_soc_bt_dai_platform_exit);
|
|
|
|
MODULE_DESCRIPTION("BT DAI module platform driver");
|
|
MODULE_LICENSE("GPL");
|