478 lines
14 KiB
C
478 lines
14 KiB
C
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// 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_capture.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 Ul1 data1 uplink
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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-analog-type.h"
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#include "mtk-soc-digital-type.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/clk.h>
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#include <linux/delay.h>
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#include <linux/gpio.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/jack.h>
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#include <sound/soc.h>
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#include <sound/pcm_params.h>
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/* information about */
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struct afe_mem_control_t *TDM_VUL_Control_context;
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static struct snd_dma_buffer *Capture_dma_buf;
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static struct audio_digital_i2s *mAudioDigitalI2S;
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static bool mCaptureUseSram;
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/*
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* function implementation
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*/
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static void StartAudioCaptureHardware(struct snd_pcm_substream *substream);
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static void StopAudioCaptureHardware(struct snd_pcm_substream *substream);
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static int mtk_capture_probe(struct platform_device *pdev);
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static int mtk_capture_pcm_close(struct snd_pcm_substream *substream);
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static int mtk_afe_capture_component_probe(struct snd_soc_component *component);
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static struct snd_pcm_hardware mtk_capture_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_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 = UL1_MAX_BUFFER_SIZE,
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.period_bytes_max = UL1_MAX_BUFFER_SIZE,
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.periods_min = UL1_MIN_PERIOD_SIZE,
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.periods_max = UL1_MAX_PERIOD_SIZE,
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.fifo_size = 0,
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};
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static void StopAudioCaptureHardware(struct snd_pcm_substream *substream)
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{
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pr_debug("StopAudioCaptureHardware\n");
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SetMemoryPathEnable(Soc_Aud_Digital_Block_I2S_IN_2, false);
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if (GetMemoryPathEnable(Soc_Aud_Digital_Block_I2S_IN_2) == false)
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Set2ndI2SInEnable(false);
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SetMemoryPathEnable(Soc_Aud_Digital_Block_MEM_VUL, false);
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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_VUL));
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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_I2S0,
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Soc_Aud_AFE_IO_Block_MEM_VUL);
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EnableAfe(false);
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}
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static void StartAudioCaptureHardware(struct snd_pcm_substream *substream)
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{
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struct audio_digital_i2s m2ndI2SInAttribute;
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pr_debug("StartAudioCaptureHardware\n");
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memset_io((void *)&m2ndI2SInAttribute, 0, sizeof(m2ndI2SInAttribute));
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m2ndI2SInAttribute.mLR_SWAP = Soc_Aud_LR_SWAP_NO_SWAP;
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m2ndI2SInAttribute.mI2S_IN_PAD_SEL = true; /* I2S_IN_FROM_IO_MUX */
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m2ndI2SInAttribute.mI2S_SLAVE = Soc_Aud_I2S_SRC_SLAVE_MODE;
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m2ndI2SInAttribute.mI2S_SAMPLERATE = substream->runtime->rate;
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m2ndI2SInAttribute.mINV_LRCK = Soc_Aud_INV_LRCK_NO_INVERSE;
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m2ndI2SInAttribute.mI2S_FMT = Soc_Aud_I2S_FORMAT_I2S;
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if (substream->runtime->format == SNDRV_PCM_FORMAT_S32_LE ||
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substream->runtime->format == SNDRV_PCM_FORMAT_U32_LE)
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m2ndI2SInAttribute.mI2S_WLEN = Soc_Aud_I2S_WLEN_WLEN_32BITS;
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else
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m2ndI2SInAttribute.mI2S_WLEN = Soc_Aud_I2S_WLEN_WLEN_16BITS;
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Set2ndI2SIn(&m2ndI2SInAttribute);
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if (substream->runtime->format == SNDRV_PCM_FORMAT_S32_LE ||
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substream->runtime->format == SNDRV_PCM_FORMAT_U32_LE) {
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SetMemIfFetchFormatPerSample(
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Soc_Aud_Digital_Block_MEM_VUL,
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AFE_WLEN_32_BIT_ALIGN_8BIT_0_24BIT_DATA);
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SetConnectionFormat(OUTPUT_DATA_FORMAT_24BIT,
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Soc_Aud_AFE_IO_Block_MEM_VUL);
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} else {
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SetMemIfFetchFormatPerSample(Soc_Aud_Digital_Block_MEM_VUL,
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AFE_WLEN_16_BIT);
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SetConnectionFormat(OUTPUT_DATA_FORMAT_16BIT,
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Soc_Aud_AFE_IO_Block_MEM_VUL);
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}
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if (GetMemoryPathEnable(Soc_Aud_Digital_Block_I2S_IN_2) == false) {
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SetMemoryPathEnable(Soc_Aud_Digital_Block_I2S_IN_2, true);
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Set2ndI2SInEnable(true);
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} else
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SetMemoryPathEnable(Soc_Aud_Digital_Block_I2S_IN_2, true);
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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_VUL),
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substream->runtime->rate, substream->runtime->period_size);
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SetSampleRate(Soc_Aud_Digital_Block_MEM_VUL, substream->runtime->rate);
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SetMemoryPathEnable(Soc_Aud_Digital_Block_MEM_VUL, true);
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SetIntfConnection(Soc_Aud_InterCon_Connection,
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Soc_Aud_AFE_IO_Block_I2S0,
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Soc_Aud_AFE_IO_Block_MEM_VUL);
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EnableAfe(true);
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}
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static int mtk_capture_pcm_prepare(struct snd_pcm_substream *substream)
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{
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pr_debug(
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"mtk_capture_pcm_prepare substream->rate = %d substream->channels = %d\n",
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substream->runtime->rate, substream->runtime->channels);
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return 0;
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}
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static int mtk_capture_alsa_stop(struct snd_pcm_substream *substream)
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{
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struct afe_block_t *Vul_Block = &(TDM_VUL_Control_context->rBlock);
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pr_debug("mtk_capture_alsa_stop\n");
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StopAudioCaptureHardware(substream);
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Vul_Block->u4DMAReadIdx = 0;
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Vul_Block->u4WriteIdx = 0;
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Vul_Block->u4DataRemained = 0;
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RemoveMemifSubStream(Soc_Aud_Digital_Block_MEM_VUL, 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_capture_pcm_pointer(struct snd_pcm_substream *substream)
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{
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return get_mem_frame_index(substream, TDM_VUL_Control_context,
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Soc_Aud_Digital_Block_MEM_VUL);
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}
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static int mtk_capture_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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runtime->dma_bytes = params_buffer_bytes(hw_params);
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if (AllocateAudioSram(&substream->runtime->dma_addr,
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&substream->runtime->dma_area,
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substream->runtime->dma_bytes, substream,
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params_format(hw_params), false) == 0) {
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#if defined(AUD_DEBUG_LOG)
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pr_debug("AllocateAudioSram success\n");
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#endif
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SetHighAddr(Soc_Aud_Digital_Block_MEM_VUL, false,
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substream->runtime->dma_addr);
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} else if (Capture_dma_buf->area) {
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#if defined(AUD_DEBUG_LOG)
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pr_debug("%s = %p dma_buf->area = %p dma_buf->addr = 0x%lx\n",
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__func__, Capture_dma_buf, Capture_dma_buf->area,
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(long)Capture_dma_buf->addr);
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#endif
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runtime->dma_area = Capture_dma_buf->area;
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runtime->dma_addr = Capture_dma_buf->addr;
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SetHighAddr(Soc_Aud_Digital_Block_MEM_VUL, true,
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runtime->dma_addr);
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mCaptureUseSram = true;
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AudDrv_Emi_Clk_On();
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} else {
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pr_debug("mtk_capture_pcm_hw_params 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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set_mem_block(substream, hw_params, TDM_VUL_Control_context,
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Soc_Aud_Digital_Block_MEM_VUL);
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#if defined(AUD_DEBUG_LOG)
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pr_debug("%s dma_bytes = %zu dma_area = %p dma_addr = 0x%lx\n",
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__func__, substream->runtime->dma_bytes,
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substream->runtime->dma_area,
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(long)substream->runtime->dma_addr);
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#endif
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return ret;
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}
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static int mtk_capture_pcm_hw_free(struct snd_pcm_substream *substream)
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{
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pr_debug("mtk_capture_pcm_hw_free\n");
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if (Capture_dma_buf->area) {
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if (mCaptureUseSram == true) {
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AudDrv_Emi_Clk_Off();
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mCaptureUseSram = false;
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} else
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freeAudioSram((void *)substream);
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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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/* Conventional and unconventional sample rate supported */
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static unsigned int Vul1_supported_sample_rates[] = {
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8000, 11025, 12000, 16000, 22050, 24000,
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32000, 44100, 48000, 88200, 96000, 192000};
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static struct snd_pcm_hw_constraint_list constraints_sample_rates = {
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.count = ARRAY_SIZE(Vul1_supported_sample_rates),
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.list = Vul1_supported_sample_rates,
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};
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static int mtk_capture_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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AudDrv_Clk_On();
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TDM_VUL_Control_context =
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Get_Mem_ControlT(Soc_Aud_Digital_Block_MEM_VUL);
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runtime->hw = mtk_capture_hardware;
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memcpy((void *)(&(runtime->hw)), (void *)&mtk_capture_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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&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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pr_debug("mtk_capture_pcm_open runtime rate = %d channels = %d\n",
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runtime->rate, runtime->channels);
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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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runtime->hw.info |= SNDRV_PCM_INFO_MMAP_VALID;
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if (ret < 0) {
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pr_err("mtk_capture_pcm_close\n");
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mtk_capture_pcm_close(substream);
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return ret;
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}
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pr_debug("mtk_capture_pcm_open return\n");
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return 0;
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}
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static int mtk_capture_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_capture_alsa_start(struct snd_pcm_substream *substream)
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{
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pr_debug("mtk_capture_alsa_start\n");
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SetMemifSubStream(Soc_Aud_Digital_Block_MEM_VUL, substream);
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StartAudioCaptureHardware(substream);
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return 0;
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}
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static int mtk_capture_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
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{
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pr_debug("mtk_capture_pcm_trigger cmd = %d\n", cmd);
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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_capture_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_capture_alsa_stop(substream);
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}
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return -EINVAL;
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}
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static int mtk_capture_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,
|
||
|
|
unsigned long bytes)
|
||
|
|
{
|
||
|
|
return mtk_memblk_copy(substream, channel, pos, buf, bytes,
|
||
|
|
TDM_VUL_Control_context,
|
||
|
|
Soc_Aud_Digital_Block_MEM_VUL);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int mtk_capture_pcm_silence(struct snd_pcm_substream *substream,
|
||
|
|
int channel,
|
||
|
|
unsigned long pos,
|
||
|
|
unsigned long bytes)
|
||
|
|
{
|
||
|
|
return 0; /* do nothing */
|
||
|
|
}
|
||
|
|
|
||
|
|
static void *dummy_page[2];
|
||
|
|
|
||
|
|
static struct page *mtk_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_afe_capture_ops = {
|
||
|
|
.open = mtk_capture_pcm_open,
|
||
|
|
.close = mtk_capture_pcm_close,
|
||
|
|
.ioctl = snd_pcm_lib_ioctl,
|
||
|
|
.hw_params = mtk_capture_pcm_hw_params,
|
||
|
|
.hw_free = mtk_capture_pcm_hw_free,
|
||
|
|
.prepare = mtk_capture_pcm_prepare,
|
||
|
|
.trigger = mtk_capture_pcm_trigger,
|
||
|
|
.pointer = mtk_capture_pcm_pointer,
|
||
|
|
.copy_user = mtk_capture_pcm_copy,
|
||
|
|
.fill_silence = mtk_capture_pcm_silence,
|
||
|
|
.page = mtk_capture_pcm_page,
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct snd_soc_component_driver mtk_soc_component = {
|
||
|
|
.name = AFE_PCM_NAME,
|
||
|
|
.ops = &mtk_afe_capture_ops,
|
||
|
|
.probe = mtk_afe_capture_component_probe,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int mtk_capture_probe(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
pr_debug("tdm mtk_capture_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_TDMRX_PCM);
|
||
|
|
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_soc_component,
|
||
|
|
NULL,
|
||
|
|
0);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int mtk_afe_capture_component_probe(struct snd_soc_component *component)
|
||
|
|
{
|
||
|
|
pr_debug("%s\n", __func__);
|
||
|
|
AudDrv_Allocate_mem_Buffer(component->dev, Soc_Aud_Digital_Block_MEM_VUL,
|
||
|
|
UL1_MAX_BUFFER_SIZE);
|
||
|
|
Capture_dma_buf = Get_Mem_Buffer(Soc_Aud_Digital_Block_MEM_VUL);
|
||
|
|
mAudioDigitalI2S =
|
||
|
|
kzalloc(sizeof(struct audio_digital_i2s), GFP_KERNEL);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int mtk_capture_remove(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
pr_debug("%s\n", __func__);
|
||
|
|
snd_soc_unregister_component(&pdev->dev);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef CONFIG_OF
|
||
|
|
static const struct of_device_id mt_soc_tdm_capture_of_ids[] = {
|
||
|
|
{
|
||
|
|
.compatible = "mediatek,mt_soc_tdm_capture",
|
||
|
|
},
|
||
|
|
{} };
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static struct platform_driver mtk_afe_capture_driver = {
|
||
|
|
.driver = {
|
||
|
|
|
||
|
|
.name = MT_SOC_TDMRX_PCM,
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
#ifdef CONFIG_OF
|
||
|
|
.of_match_table = mt_soc_tdm_capture_of_ids,
|
||
|
|
#endif
|
||
|
|
},
|
||
|
|
.probe = mtk_capture_probe,
|
||
|
|
.remove = mtk_capture_remove,
|
||
|
|
};
|
||
|
|
|
||
|
|
#ifndef CONFIG_OF
|
||
|
|
static struct platform_device *soc_mtkafe_capture_dev;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static int __init mtk_soc_capture_platform_init(void)
|
||
|
|
{
|
||
|
|
int ret = 0;
|
||
|
|
|
||
|
|
pr_debug("%s\n", __func__);
|
||
|
|
#ifndef CONFIG_OF
|
||
|
|
soc_mtkafe_capture_dev = platform_device_alloc(MT_SOC_TDMRX_PCM, -1);
|
||
|
|
if (!soc_mtkafe_capture_dev)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
ret = platform_device_add(soc_mtkafe_capture_dev);
|
||
|
|
if (ret != 0) {
|
||
|
|
platform_device_put(soc_mtkafe_capture_dev);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
ret = platform_driver_register(&mtk_afe_capture_driver);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
module_init(mtk_soc_capture_platform_init);
|
||
|
|
|
||
|
|
static void __exit mtk_soc_platform_exit(void)
|
||
|
|
{
|
||
|
|
|
||
|
|
platform_driver_unregister(&mtk_afe_capture_driver);
|
||
|
|
}
|
||
|
|
module_exit(mtk_soc_platform_exit);
|
||
|
|
|
||
|
|
MODULE_DESCRIPTION("AFE PCM module platform driver");
|
||
|
|
MODULE_LICENSE("GPL");
|