476 lines
12 KiB
C
Executable file
476 lines
12 KiB
C
Executable file
// 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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* mt-soc-pcm-voice-usb-echoref.c
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*
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* Project:
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* --------
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* MT6797
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*
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* Description:
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* ------------
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* Platform driver for usb phone call echo reference path
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*
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* Author:
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* -------
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* Kai Chieh Chuang
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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-clk.h"
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#include "mtk-auddrv-common-func.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-soc-afe-control.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/dma-mapping.h>
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#if 0
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/* debug */
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#define NUM_DBG_LOG 60
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#define DBG_LOG_LENGTH 256
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struct usb_dbg_log {
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unsigned int idx;
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char log[DBG_LOG_LENGTH];
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};
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static struct usb_dbg_log dbg_log[NUM_DBG_LOG];
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static unsigned int dbg_log_idx;
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static void print_usb_dbg_log(void)
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{
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unsigned int i = 0;
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for (i = 0; i < NUM_DBG_LOG; i++) {
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pr_debug("%s(), idx %u, %s\n",
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__func__, dbg_log[i].idx, dbg_log[i].log);
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}
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}
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#endif
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/*
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* function implementation
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*/
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static bool usb_prepare_done[2] = {false, false};
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static bool usb_use_dram;
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static int usb_mem_blk[2] = {Soc_Aud_Digital_Block_MEM_DL1,
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Soc_Aud_Digital_Block_MEM_AWB};
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static struct snd_pcm_hardware mtk_pcm_hardware = {
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.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_RESUME | SNDRV_PCM_INFO_MMAP_VALID),
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.formats = SND_SOC_ADV_MT_FMTS,
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.rates = SOC_HIGH_USE_RATE,
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.rate_min = SOC_HIGH_USE_RATE_MIN,
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.rate_max = SOC_HIGH_USE_RATE_MAX,
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.channels_min = SOC_NORMAL_USE_CHANNELS_MIN,
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.channels_max = SOC_NORMAL_USE_CHANNELS_MAX,
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.buffer_bytes_max = MAX_BUFFER_SIZE,
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.period_bytes_max = MAX_PERIOD_SIZE,
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.periods_min = 2,
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.periods_max = 256,
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.fifo_size = 0,
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};
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static int usb_md_select;
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static const char *const md_choose[] = {"md1", "md2"};
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static const struct soc_enum speech_usb_enum[] = {
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SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(md_choose), md_choose),
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};
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static int Audio_USB_MD_Select_Control_Get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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pr_debug("%s(), usb_md_select = %d\n", __func__, usb_md_select);
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ucontrol->value.integer.value[0] = usb_md_select;
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return 0;
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}
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static int Audio_USB_MD_Select_Control_Set(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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if (ucontrol->value.enumerated.item[0] > ARRAY_SIZE(md_choose)) {
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pr_warn("return -EINVAL\n");
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return -EINVAL;
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}
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usb_md_select = ucontrol->value.integer.value[0];
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pr_debug("%s(), usb_md_select = %d\n", __func__, usb_md_select);
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return 0;
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}
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enum USB_DBG_TYPE {
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USB_DBG_ASSERT_AT_STOP = 0x1 << 0,
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};
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static int usb_debug_enable;
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static int Audio_USB_Debug_Get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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ucontrol->value.integer.value[0] = usb_debug_enable;
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return 0;
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}
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static int Audio_USB_Debug_Set(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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usb_debug_enable = ucontrol->value.integer.value[0];
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pr_debug("%s(), usb_debug_enable = 0x%x\n", __func__, usb_debug_enable);
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return 0;
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}
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static const struct snd_kcontrol_new speech_usb_controls[] = {
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SOC_ENUM_EXT("USB_EchoRef_Modem_Select", speech_usb_enum[0],
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Audio_USB_MD_Select_Control_Get,
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Audio_USB_MD_Select_Control_Set),
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SOC_SINGLE_EXT("USB_EchoRef_Voice_Debug", SND_SOC_NOPM, 0, 0xFFFFFFFF,
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0, Audio_USB_Debug_Get, Audio_USB_Debug_Set),
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};
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static int mtk_usb_echoref_close(struct snd_pcm_substream *substream)
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{
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int stream = substream->stream;
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pr_debug("%s(), stream %d, prepare %d\n", __func__, stream,
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usb_prepare_done[stream]);
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if (usb_prepare_done[substream->stream]) {
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usb_prepare_done[substream->stream] = false;
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RemoveMemifSubStream(usb_mem_blk[stream], substream);
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if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
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if (usb_md_select) {
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SetIntfConnection(
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Soc_Aud_InterCon_DisConnect,
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Soc_Aud_AFE_IO_Block_MEM_DL1_CH1,
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Soc_Aud_AFE_IO_Block_MODEM_PCM_1_O_CH4);
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} else {
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SetIntfConnection(
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Soc_Aud_InterCon_DisConnect,
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Soc_Aud_AFE_IO_Block_MEM_DL1_CH1,
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Soc_Aud_AFE_IO_Block_MODEM_PCM_2_O_CH4);
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}
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/* resume pbuf size */
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set_memif_pbuf_size(usb_mem_blk[stream],
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MEMIF_PBUF_SIZE_256_BYTES);
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}
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}
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EnableAfe(false);
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AudDrv_Clk_Off();
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return 0;
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}
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static int mtk_usb_echoref_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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pr_debug("%s()\n", __func__);
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runtime->hw = mtk_pcm_hardware;
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memcpy((void *)(&(runtime->hw)), (void *)&mtk_pcm_hardware,
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sizeof(struct snd_pcm_hardware));
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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("snd_pcm_hw_constraint_integer failed\n");
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if (ret < 0) {
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mtk_usb_echoref_close(substream);
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return ret;
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}
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pr_debug("%s(), return\n", __func__);
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return 0;
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}
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static int mtk_usb_echoref_prepare(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 stream = substream->stream;
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pr_debug("%s(), rate = %d, ch= %d psize = %lu, prepare %d\n",
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__func__, runtime->rate, runtime->channels,
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runtime->period_size, usb_prepare_done[stream]);
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if (!usb_prepare_done[stream]) {
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SetMemifSubStream(usb_mem_blk[stream], substream);
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/* set memif format */
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if (runtime->format == SNDRV_PCM_FORMAT_S32_LE ||
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runtime->format == SNDRV_PCM_FORMAT_U32_LE)
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SetMemIfFetchFormatPerSample(
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usb_mem_blk[stream],
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AFE_WLEN_32_BIT_ALIGN_8BIT_0_24BIT_DATA);
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else
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SetMemIfFetchFormatPerSample(usb_mem_blk[stream],
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AFE_WLEN_16_BIT);
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SetSampleRate(usb_mem_blk[stream], runtime->rate);
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SetChannels(usb_mem_blk[stream], runtime->channels);
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if (runtime->channels == 1)
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SetMemifMonoSel(usb_mem_blk[stream], false);
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/* set pbuf size for latency */
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if (stream == SNDRV_PCM_STREAM_PLAYBACK)
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set_memif_pbuf_size(usb_mem_blk[stream],
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MEMIF_PBUF_SIZE_32_BYTES);
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/* set connection */
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if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
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if (usb_md_select) {
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SetIntfConnection(
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Soc_Aud_InterCon_Connection,
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Soc_Aud_AFE_IO_Block_MEM_DL1_CH1,
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Soc_Aud_AFE_IO_Block_MODEM_PCM_1_O_CH4);
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} else {
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SetIntfConnection(
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Soc_Aud_InterCon_Connection,
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Soc_Aud_AFE_IO_Block_MEM_DL1_CH1,
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Soc_Aud_AFE_IO_Block_MODEM_PCM_2_O_CH4);
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}
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}
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usb_prepare_done[stream] = true;
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}
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ClearMemBlock(usb_mem_blk[stream]);
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EnableAfe(true);
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return 0;
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}
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static int mtk_usb_echoref_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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int stream = substream->stream;
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int ret = 0;
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runtime->dma_bytes = params_buffer_bytes(hw_params);
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ret = snd_pcm_lib_malloc_pages(substream, runtime->dma_bytes);
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if (ret < 0) {
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pr_err("%s(), allocate dram fail, ret %d\n", __func__, ret);
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return ret;
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}
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usb_use_dram = true;
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SetHighAddr(usb_mem_blk[stream], true, substream->runtime->dma_addr);
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AudDrv_Emi_Clk_On();
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set_mem_block(substream, hw_params,
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Get_Mem_ControlT(usb_mem_blk[stream]),
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usb_mem_blk[stream]);
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pr_debug("%s, stream %d, dma_bytes = %zu,area = %p,addr = %lx,dram %d\n",
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__func__, stream, runtime->dma_bytes,
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runtime->dma_area, (long)runtime->dma_addr, usb_use_dram);
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return ret;
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}
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static int mtk_usb_echoref_hw_free(struct snd_pcm_substream *substream)
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{
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pr_debug("%s(), substream = %p, stream %d\n", __func__, substream,
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substream->stream);
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if (usb_use_dram) {
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AudDrv_Emi_Clk_Off();
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usb_use_dram = false;
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return snd_pcm_lib_free_pages(substream);
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} else {
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return freeAudioSram((void *)substream);
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}
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}
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static int mtk_usb_echoref_start(struct snd_pcm_substream *substream)
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{
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int stream = substream->stream;
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pr_debug("%s(), stream %d\n", __func__, stream);
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SetMemoryPathEnable(usb_mem_blk[stream], true);
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/* here to set interrupt */
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irq_add_user(substream, irq_request_number(usb_mem_blk[stream]),
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substream->runtime->rate, substream->runtime->period_size);
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EnableAfe(true);
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return 0;
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}
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static int mtk_usb_echoref_stop(struct snd_pcm_substream *substream)
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{
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int stream = substream->stream;
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pr_debug("%s(), stream %d\n", __func__, stream);
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#if 0
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if (usb_debug_enable & USB_DBG_ASSERT_AT_STOP) {
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if (stream == SNDRV_PCM_STREAM_PLAYBACK)
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print_usb_dbg_log();
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}
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#endif
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irq_remove_user(substream, irq_request_number(usb_mem_blk[stream]));
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SetMemoryPathEnable(usb_mem_blk[stream], false);
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ClearMemBlock(usb_mem_blk[stream]);
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return 0;
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}
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static int mtk_usb_echoref_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_usb_echoref_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_usb_echoref_stop(substream);
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}
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return -EINVAL;
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}
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static snd_pcm_uframes_t
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mtk_usb_echoref_pointer(struct snd_pcm_substream *substream)
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{
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unsigned int hw_ptr;
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int stream = substream->stream;
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struct afe_mem_control_t *mem_ctl =
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Get_Mem_ControlT(usb_mem_blk[stream]);
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struct afe_block_t *Afe_Block = &mem_ctl->rBlock;
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hw_ptr = Afe_Get_Reg(AFE_DL1_CUR);
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if (hw_ptr == 0) {
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pr_info("%s(), hw_ptr == 0\n", __func__);
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hw_ptr = Afe_Block->pucPhysBufAddr;
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}
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return bytes_to_frames(substream->runtime,
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hw_ptr - Afe_Block->pucPhysBufAddr);
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}
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static struct snd_pcm_ops mtk_usb_echoref_ops = {
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.open = mtk_usb_echoref_open,
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.close = mtk_usb_echoref_close,
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.ioctl = snd_pcm_lib_ioctl,
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.hw_params = mtk_usb_echoref_hw_params,
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.hw_free = mtk_usb_echoref_hw_free,
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.prepare = mtk_usb_echoref_prepare,
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.trigger = mtk_usb_echoref_trigger,
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.pointer = mtk_usb_echoref_pointer,
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.copy_user = mtk_afe_pcm_copy,
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};
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static int mtk_usb_echoref_component_probe(struct snd_soc_component *component)
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{
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snd_soc_add_component_controls(component, speech_usb_controls,
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ARRAY_SIZE(speech_usb_controls));
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return 0;
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}
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static int mtk_usb_echoref_pcm_new(struct snd_soc_pcm_runtime *rtd)
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{
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size_t size;
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struct snd_card *card = rtd->card->snd_card;
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struct snd_pcm *pcm = rtd->pcm;
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size = mtk_pcm_hardware.buffer_bytes_max;
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return snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
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card->dev, size, size);
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}
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static void mtk_usb_echoref_pcm_free(struct snd_pcm *pcm)
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{
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snd_pcm_lib_preallocate_free_for_all(pcm);
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}
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static struct snd_soc_component_driver mtk_soc_usb_echoref_component = {
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.name = AFE_PCM_NAME,
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.ops = &mtk_usb_echoref_ops,
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.probe = mtk_usb_echoref_component_probe,
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.pcm_new = mtk_usb_echoref_pcm_new,
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.pcm_free = mtk_usb_echoref_pcm_free,
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};
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static int mtk_usb_echoref_probe(struct platform_device *pdev)
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{
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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_VOICE_USB_ECHOREF);
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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_usb_echoref_component,
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NULL,
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0);
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}
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static int mtk_usb_echoref_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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static const struct of_device_id mt_soc_pcm_usb_echoref_of_ids[] = {
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{
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.compatible = "mediatek,mt_soc_pcm_voice_usb_echoref",
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},
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{} };
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static struct platform_driver mtk_usb_echoref_driver = {
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.driver = {
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.name = MT_SOC_VOICE_USB_ECHOREF,
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.owner = THIS_MODULE,
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.of_match_table = mt_soc_pcm_usb_echoref_of_ids,
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},
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.probe = mtk_usb_echoref_probe,
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.remove = mtk_usb_echoref_remove,
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};
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module_platform_driver(mtk_usb_echoref_driver);
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MODULE_DESCRIPTION("AFE PCM module platform driver");
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MODULE_LICENSE("GPL");
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