240 lines
5.9 KiB
C
240 lines
5.9 KiB
C
|
/*
|
||
|
|
* dbmdx-i2s.c -- DBMDX I2S interface
|
||
|
|
*
|
||
|
|
* Copyright (C) 2014 DSP Group
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License version 2 as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/err.h>
|
||
|
|
#include <sound/core.h>
|
||
|
|
#include <sound/soc.h>
|
||
|
|
#include <sound/pcm_params.h>
|
||
|
|
|
||
|
|
static int dbmdx_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,
|
||
|
|
unsigned int freq, int dir)
|
||
|
|
{
|
||
|
|
struct snd_soc_component *component = dai->component;
|
||
|
|
|
||
|
|
dev_dbg(component->dev, "%s\n", __func__);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int dbmdx_i2s_set_pll(struct snd_soc_dai *dai, int pll_id,
|
||
|
|
int source, unsigned int freq_in,
|
||
|
|
unsigned int freq_out)
|
||
|
|
{
|
||
|
|
struct snd_soc_component *component = dai->component;
|
||
|
|
|
||
|
|
dev_dbg(component->dev, "%s\n", __func__);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int dbmdx_i2s_set_clkdiv(struct snd_soc_dai *dai, int div_id,
|
||
|
|
int div)
|
||
|
|
{
|
||
|
|
struct snd_soc_component *component = dai->component;
|
||
|
|
|
||
|
|
dev_dbg(component->dev, "%s\n", __func__);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int dbmdx_i2s_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
|
||
|
|
{
|
||
|
|
struct snd_soc_component *component = dai->component;
|
||
|
|
|
||
|
|
dev_dbg(component->dev, "%s\n", __func__);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int dbmdx_i2s_set_tdm_slot(struct snd_soc_dai *dai,
|
||
|
|
unsigned int tx_mask, unsigned int rx_mask,
|
||
|
|
int slots, int slot_width)
|
||
|
|
{
|
||
|
|
struct snd_soc_component *component = dai->component;
|
||
|
|
|
||
|
|
dev_dbg(component->dev, "%s\n", __func__);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int dbmdx_i2s_set_channel_map(struct snd_soc_dai *dai,
|
||
|
|
unsigned int tx_num, unsigned int *tx_slot,
|
||
|
|
unsigned int rx_num, unsigned int *rx_slot)
|
||
|
|
{
|
||
|
|
struct snd_soc_component *component = dai->component;
|
||
|
|
|
||
|
|
dev_dbg(component->dev, "%s\n", __func__);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int dbmdx_i2s_set_tristate(struct snd_soc_dai *dai, int tristate)
|
||
|
|
{
|
||
|
|
struct snd_soc_component *component = dai->component;
|
||
|
|
|
||
|
|
dev_dbg(component->dev, "%s: dai:%d tristate:%d\n", __func__,
|
||
|
|
dai->id, tristate);
|
||
|
|
|
||
|
|
/* TODO might check if dai->id is valid */
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int dbmdx_i2s_port_mute(struct snd_soc_dai *dai, int mute)
|
||
|
|
{
|
||
|
|
struct snd_soc_component *component = dai->component;
|
||
|
|
|
||
|
|
dev_dbg(component->dev, "%s: dai:%d mute:%d\n", __func__,
|
||
|
|
dai->id, mute);
|
||
|
|
|
||
|
|
/* TODO might check if dai->id is valid */
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static int dbmdx_i2s_startup(struct snd_pcm_substream *substream,
|
||
|
|
struct snd_soc_dai *dai)
|
||
|
|
{
|
||
|
|
struct snd_soc_component *component = dai->component;
|
||
|
|
|
||
|
|
dev_dbg(component->dev, "%s: dai:%d\n", __func__, dai->id);
|
||
|
|
|
||
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
||
|
|
dev_dbg(component->dev, "%s: playback stream\n", __func__);
|
||
|
|
else
|
||
|
|
dev_dbg(component->dev, "%s: capture stream\n", __func__);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void dbmdx_i2s_shutdown(struct snd_pcm_substream *substream,
|
||
|
|
struct snd_soc_dai *dai)
|
||
|
|
{
|
||
|
|
struct snd_soc_component *component = dai->component;
|
||
|
|
|
||
|
|
dev_dbg(component->dev, "%s: dai:%d\n", __func__, dai->id);
|
||
|
|
|
||
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
||
|
|
dev_dbg(component->dev, "%s: playback stream\n", __func__);
|
||
|
|
else
|
||
|
|
dev_dbg(component->dev, "%s: capture stream\n", __func__);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int dbmdx_i2s_hw_params(struct snd_pcm_substream *substream,
|
||
|
|
struct snd_pcm_hw_params *params,
|
||
|
|
struct snd_soc_dai *dai)
|
||
|
|
{
|
||
|
|
struct snd_soc_component *component = dai->component;
|
||
|
|
|
||
|
|
dev_dbg(component->dev, "%s: dai:%d\n", __func__, dai->id);
|
||
|
|
/* TODO might check if dai->id is valid */
|
||
|
|
|
||
|
|
dev_dbg(component->dev, "%s: params_channels = %d\n", __func__,
|
||
|
|
params_channels(params));
|
||
|
|
|
||
|
|
switch (params_channels(params)) {
|
||
|
|
case 2:
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
dev_dbg(component->dev, "%s: params_rate = %d\n", __func__,
|
||
|
|
params_rate(params));
|
||
|
|
switch (params_rate(params)) {
|
||
|
|
case 8000:
|
||
|
|
case 16000:
|
||
|
|
case 48000:
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
switch (params_format(params)) {
|
||
|
|
case SNDRV_PCM_FORMAT_S16_LE:
|
||
|
|
case SNDRV_PCM_FORMAT_S32_LE:
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
||
|
|
dev_dbg(component->dev, "%s: playback stream\n", __func__);
|
||
|
|
else
|
||
|
|
dev_dbg(component->dev, "%s: capture stream\n", __func__);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int dbmdx_i2s_hw_free(struct snd_pcm_substream *substream,
|
||
|
|
struct snd_soc_dai *dai)
|
||
|
|
{
|
||
|
|
struct snd_soc_component *component = dai->component;
|
||
|
|
|
||
|
|
dev_dbg(component->dev, "%s: dai:%d\n", __func__, dai->id);
|
||
|
|
|
||
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
||
|
|
dev_dbg(component->dev, "%s: playback stream\n", __func__);
|
||
|
|
else
|
||
|
|
dev_dbg(component->dev, "%s: capture stream\n", __func__);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int dbmdx_i2s_prepare(struct snd_pcm_substream *substream,
|
||
|
|
struct snd_soc_dai *dai)
|
||
|
|
{
|
||
|
|
struct snd_soc_component *component = dai->component;
|
||
|
|
|
||
|
|
dev_dbg(component->dev, "%s: dai:%d\n", __func__, dai->id);
|
||
|
|
|
||
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
||
|
|
dev_dbg(component->dev, "%s: playback stream\n", __func__);
|
||
|
|
else
|
||
|
|
dev_dbg(component->dev, "%s: capture stream\n", __func__);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int dbmdx_i2s_trigger(struct snd_pcm_substream *substream,
|
||
|
|
int cmd,
|
||
|
|
struct snd_soc_dai *dai)
|
||
|
|
{
|
||
|
|
struct snd_soc_component *component = dai->component;
|
||
|
|
|
||
|
|
dev_dbg(component->dev, "%s: dai:%d cmd=%d\n", __func__,
|
||
|
|
dai->id, cmd);
|
||
|
|
|
||
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
||
|
|
dev_dbg(component->dev, "%s: playback stream\n", __func__);
|
||
|
|
else
|
||
|
|
dev_dbg(component->dev, "%s: capture stream\n", __func__);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct snd_soc_dai_ops dbmdx_i2s_dai_ops = {
|
||
|
|
.set_sysclk = dbmdx_i2s_set_sysclk,
|
||
|
|
.set_pll = dbmdx_i2s_set_pll,
|
||
|
|
.set_clkdiv = dbmdx_i2s_set_clkdiv,
|
||
|
|
.set_fmt = dbmdx_i2s_set_dai_fmt,
|
||
|
|
.set_tdm_slot = dbmdx_i2s_set_tdm_slot,
|
||
|
|
.set_channel_map = dbmdx_i2s_set_channel_map,
|
||
|
|
.set_tristate = dbmdx_i2s_set_tristate,
|
||
|
|
.digital_mute = dbmdx_i2s_port_mute,
|
||
|
|
.startup = dbmdx_i2s_startup,
|
||
|
|
.shutdown = dbmdx_i2s_shutdown,
|
||
|
|
.hw_params = dbmdx_i2s_hw_params,
|
||
|
|
.hw_free = dbmdx_i2s_hw_free,
|
||
|
|
.prepare = dbmdx_i2s_prepare,
|
||
|
|
.trigger = dbmdx_i2s_trigger,
|
||
|
|
};
|
||
|
|
EXPORT_SYMBOL(dbmdx_i2s_dai_ops);
|