400 lines
11 KiB
C
400 lines
11 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_i2s0_awb.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 i2s0 to awb 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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/*****************************************************************************
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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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/* information about */
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static struct afe_mem_control_t *I2S0_AWB_Control_context;
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static struct snd_dma_buffer *Awb_Capture_dma_buf;
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/*
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* function implementation
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*/
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static void StartAudioI2sInAWBHardware(struct snd_pcm_substream *substream);
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static void StopAudioI2sInAWBHardware(struct snd_pcm_substream *substream);
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static int mtk_i2s0_awb_probe(struct platform_device *pdev);
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static int mtk_i2s0_awb_pcm_close(struct snd_pcm_substream *substream);
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static int mtk_i2s0_dl1_awb_component_probe(struct snd_soc_component *component);
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static struct snd_pcm_hardware mtk_I2S0_awb_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_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 = AWB_MAX_BUFFER_SIZE,
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.period_bytes_max = AWB_MAX_BUFFER_SIZE,
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.periods_min = AWB_MIN_PERIOD_SIZE,
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.periods_max = AWB_MAX_PERIOD_SIZE,
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.fifo_size = 0,
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};
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static void StopAudioI2sInAWBHardware(struct snd_pcm_substream *substream)
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{
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/* stop connection between default i2s in(i2s0) and awb.
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* i2s in configuration is in mtk-soc-pcm-dl1-i2s0.c
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*/
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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_AWB);
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SetMemoryPathEnable(Soc_Aud_Digital_Block_MEM_AWB, 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_AWB));
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EnableAfe(false);
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}
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static void StartAudioI2sInAWBHardware(struct snd_pcm_substream *substream)
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{
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/* start connection between default i2s in(i2s0) and awb.
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* i2s in configuration is in mtk-soc-pcm-dl1-i2s0.c
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*/
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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_AWB);
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/* here to set interrupt */
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irq_add_user(
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substream, irq_request_number(Soc_Aud_Digital_Block_MEM_AWB),
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substream->runtime->rate, substream->runtime->period_size >> 1);
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SetSampleRate(Soc_Aud_Digital_Block_MEM_AWB, substream->runtime->rate);
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SetMemoryPathEnable(Soc_Aud_Digital_Block_MEM_AWB, true);
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EnableAfe(true);
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}
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static int mtk_i2s0_awb_pcm_prepare(struct snd_pcm_substream *substream)
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{
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pr_debug("%s substream->rate = %d channels = %d\n",
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__func__, substream->runtime->rate,
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substream->runtime->channels);
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return 0;
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}
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static int mtk_i2s0_awb_alsa_stop(struct snd_pcm_substream *substream)
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{
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/* struct afe_block_t *Awb_Block = &(I2S0_AWB_Control_context->rBlock);
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*/
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pr_debug("mtk_i2s0_awb_alsa_stop\n");
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StopAudioI2sInAWBHardware(substream);
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RemoveMemifSubStream(Soc_Aud_Digital_Block_MEM_AWB, 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_i2s0_awb_pcm_pointer(struct snd_pcm_substream *substream)
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{
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return get_mem_frame_index(substream, I2S0_AWB_Control_context,
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Soc_Aud_Digital_Block_MEM_AWB);
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}
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static int mtk_i2s0_awb_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 (Awb_Capture_dma_buf->area) {
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pr_debug("mtk_i2s0_awb_pcm_hw_params Awb_Capture_dma_buf->area\n");
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runtime->dma_bytes = params_buffer_bytes(hw_params);
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runtime->dma_area = Awb_Capture_dma_buf->area;
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runtime->dma_addr = Awb_Capture_dma_buf->addr;
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SetHighAddr(Soc_Aud_Digital_Block_MEM_AWB, true,
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runtime->dma_addr);
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} else {
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pr_debug("mtk_i2s0_awb_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, I2S0_AWB_Control_context,
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Soc_Aud_Digital_Block_MEM_AWB);
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AudDrv_Emi_Clk_On();
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pr_debug("dma_bytes = %zu dma_area = %p dma_addr = 0x%lx\n",
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substream->runtime->dma_bytes, substream->runtime->dma_area,
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(long)substream->runtime->dma_addr);
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return ret;
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}
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static int mtk_i2s0_capture_pcm_hw_free(struct snd_pcm_substream *substream)
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{
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pr_debug("mtk_i2s0_capture_pcm_hw_free\n");
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AudDrv_Emi_Clk_Off();
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if (Awb_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 dl1_awb_constraints_sample_rates = {
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.count = ARRAY_SIZE(soc_high_supported_sample_rates),
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.list = soc_high_supported_sample_rates,
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};
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static int mtk_i2s0_awb_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("mtk_i2s0_awb_pcm_open\n");
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I2S0_AWB_Control_context =
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Get_Mem_ControlT(Soc_Aud_Digital_Block_MEM_AWB);
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runtime->hw = mtk_I2S0_awb_hardware;
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memcpy((void *)(&(runtime->hw)), (void *)&mtk_I2S0_awb_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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&dl1_awb_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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/* here open audio clocks */
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AudDrv_Clk_On();
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/* print for hw pcm information */
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pr_debug("mtk_i2s0_awb_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 (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
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pr_info("SNDRV_PCM_STREAM_CAPTURE\n");
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else
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return -1;
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if (ret < 0) {
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pr_err("mtk_i2s0_awb_pcm_close\n");
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mtk_i2s0_awb_pcm_close(substream);
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return ret;
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}
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pr_debug("mtk_i2s0_awb_pcm_open return\n");
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return 0;
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}
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static int mtk_i2s0_awb_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_i2s0_awb_alsa_start(struct snd_pcm_substream *substream)
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{
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pr_debug("mtk_i2s0_awb_alsa_start\n");
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SetMemifSubStream(Soc_Aud_Digital_Block_MEM_AWB, substream);
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StartAudioI2sInAWBHardware(substream);
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return 0;
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}
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static int mtk_i2s0_awb_pcm_trigger(struct snd_pcm_substream *substream,
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int cmd)
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{
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pr_debug("mtk_i2s0_awb_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_i2s0_awb_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_i2s0_awb_alsa_stop(substream);
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}
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return -EINVAL;
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}
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static int mtk_i2s0_awb_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 mtk_memblk_copy(substream, channel, pos, buf, bytes,
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I2S0_AWB_Control_context,
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Soc_Aud_Digital_Block_MEM_AWB);
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}
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static int mtk_capture_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 *
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mtk_i2s0_capture_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 struct snd_pcm_ops mtk_i2s0_awb_ops = {
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.open = mtk_i2s0_awb_pcm_open,
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.close = mtk_i2s0_awb_pcm_close,
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.ioctl = snd_pcm_lib_ioctl,
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.hw_params = mtk_i2s0_awb_pcm_hw_params,
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.hw_free = mtk_i2s0_capture_pcm_hw_free,
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.prepare = mtk_i2s0_awb_pcm_prepare,
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.trigger = mtk_i2s0_awb_pcm_trigger,
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.pointer = mtk_i2s0_awb_pcm_pointer,
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.copy_user = mtk_i2s0_awb_pcm_copy,
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.fill_silence = mtk_capture_pcm_silence,
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.page = mtk_i2s0_capture_pcm_page,
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};
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static struct snd_soc_component_driver mtk_soc_component = {
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.name = AFE_PCM_NAME,
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.ops = &mtk_i2s0_awb_ops,
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.probe = mtk_i2s0_dl1_awb_component_probe,
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};
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static int mtk_i2s0_awb_probe(struct platform_device *pdev)
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{
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pr_debug("mtk_i2s0_awb_probe\n");
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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_I2S0_AWB_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_component,
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NULL,
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0);
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}
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static int mtk_i2s0_dl1_awb_component_probe(struct snd_soc_component *component)
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{
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pr_debug("%s\n", __func__);
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AudDrv_Allocate_mem_Buffer(component->dev, Soc_Aud_Digital_Block_MEM_AWB,
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AWB_MAX_BUFFER_SIZE);
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Awb_Capture_dma_buf = Get_Mem_Buffer(Soc_Aud_Digital_Block_MEM_AWB);
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return 0;
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}
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static int mtk_dl1_awb_remove(struct platform_device *pdev)
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{
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pr_debug("%s\n", __func__);
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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_i2s0_awb_of_ids[] = {
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{
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.compatible = "mediatek,mt_soc_pcm_i2s0_awb",
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},
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{} };
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#endif
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static struct platform_driver mtk_i2s0_awb_capture_driver = {
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.driver = {
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.name = MT_SOC_I2S0_AWB_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_i2s0_awb_of_ids,
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#endif
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},
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.probe = mtk_i2s0_awb_probe,
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.remove = mtk_dl1_awb_remove,
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};
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#ifndef CONFIG_OF
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static struct platform_device *soc_i2s0_awb_capture_dev;
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#endif
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static int __init mtk_soc_i2s0_awb_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_i2s0_awb_capture_dev =
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platform_device_alloc(MT_SOC_I2S0_AWB_PCM, -1);
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if (!soc_i2s0_awb_capture_dev)
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return -ENOMEM;
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ret = platform_device_add(soc_i2s0_awb_capture_dev);
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if (ret != 0) {
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platform_device_put(soc_i2s0_awb_capture_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_i2s0_awb_capture_driver);
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return ret;
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}
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static void __exit mtk_soc_i2s0_awb_platform_exit(void)
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{
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platform_driver_unregister(&mtk_i2s0_awb_capture_driver);
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}
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module_init(mtk_soc_i2s0_awb_platform_init);
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module_exit(mtk_soc_i2s0_awb_platform_exit);
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MODULE_DESCRIPTION("I2S0 AWB module platform driver");
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MODULE_LICENSE("GPL");
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