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ASoC: sun4i: Implement MIC1 capture 

One of the input path used in the Allwinner codec is the MIC1. Add support
for it.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Maxime Ripard 2015-11-30 16:37:47 +01:00 committed by Mark Brown
parent 8005c49d9a
commit 1fb34b4836
1 changed files with 197 additions and 31 deletions
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228
sound/soc/sunxi/sun4i-codec.c
View File

@ -69,6 +69,7 @@
/* Codec ADC register offsets and bit fields */
#define SUN4I_CODEC_ADC_FIFOC (0x1c)
#define SUN4I_CODEC_ADC_FIFOC_ADC_FS (29)
#define SUN4I_CODEC_ADC_FIFOC_EN_AD (28)
#define SUN4I_CODEC_ADC_FIFOC_RX_FIFO_MODE (24)
#define SUN4I_CODEC_ADC_FIFOC_RX_TRIG_LEVEL (8)
@ -102,6 +103,7 @@ struct sun4i_codec {
struct clk *clk_apb;
struct clk *clk_module;
struct snd_dmaengine_dai_dma_data capture_dma_data;
struct snd_dmaengine_dai_dma_data playback_dma_data;
};
@ -136,26 +138,54 @@ static void sun4i_codec_stop_playback(struct sun4i_codec *scodec)
0);
}
static void sun4i_codec_start_capture(struct sun4i_codec *scodec)
{
/*
* FIXME: according to the BSP, we might need to drive a PA
* GPIO high here on some boards
*/
/* Enable ADC DRQ */
regmap_update_bits(scodec->regmap, SUN4I_CODEC_ADC_FIFOC,
BIT(SUN4I_CODEC_ADC_FIFOC_ADC_DRQ_EN),
BIT(SUN4I_CODEC_ADC_FIFOC_ADC_DRQ_EN));
}
static void sun4i_codec_stop_capture(struct sun4i_codec *scodec)
{
/*
* FIXME: according to the BSP, we might need to drive a PA
* GPIO low here on some boards
*/
/* Disable ADC DRQ */
regmap_update_bits(scodec->regmap, SUN4I_CODEC_ADC_FIFOC,
BIT(SUN4I_CODEC_ADC_FIFOC_ADC_DRQ_EN), 0);
}
static int sun4i_codec_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct sun4i_codec *scodec = snd_soc_card_get_drvdata(rtd->card);
if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
return -ENOTSUPP;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
sun4i_codec_start_playback(scodec);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
sun4i_codec_start_playback(scodec);
else
sun4i_codec_start_capture(scodec);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
sun4i_codec_stop_playback(scodec);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
sun4i_codec_stop_playback(scodec);
else
sun4i_codec_stop_capture(scodec);
break;
default:
@ -165,16 +195,55 @@ static int sun4i_codec_trigger(struct snd_pcm_substream *substream, int cmd,
return 0;
}
static int sun4i_codec_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
static int sun4i_codec_prepare_capture(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct sun4i_codec *scodec = snd_soc_card_get_drvdata(rtd->card);
/* Flush RX FIFO */
regmap_update_bits(scodec->regmap, SUN4I_CODEC_ADC_FIFOC,
BIT(SUN4I_CODEC_ADC_FIFOC_FIFO_FLUSH),
BIT(SUN4I_CODEC_ADC_FIFOC_FIFO_FLUSH));
/* Set RX FIFO trigger level */
regmap_update_bits(scodec->regmap, SUN4I_CODEC_ADC_FIFOC,
0xf << SUN4I_CODEC_ADC_FIFOC_RX_TRIG_LEVEL,
0x7 << SUN4I_CODEC_ADC_FIFOC_RX_TRIG_LEVEL);
/*
* FIXME: Undocumented in the datasheet, but
* Allwinner's code mentions that it is related
* related to microphone gain
*/
regmap_update_bits(scodec->regmap, SUN4I_CODEC_ADC_ACTL,
0x3 << 25,
0x1 << 25);
if (of_device_is_compatible(scodec->dev->of_node,
"allwinner,sun7i-a20-codec"))
/* FIXME: Undocumented bits */
regmap_update_bits(scodec->regmap, SUN4I_CODEC_DAC_TUNE,
0x3 << 8,
0x1 << 8);
/* Fill most significant bits with valid data MSB */
regmap_update_bits(scodec->regmap, SUN4I_CODEC_ADC_FIFOC,
BIT(SUN4I_CODEC_ADC_FIFOC_RX_FIFO_MODE),
BIT(SUN4I_CODEC_ADC_FIFOC_RX_FIFO_MODE));
return 0;
}
static int sun4i_codec_prepare_playback(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct sun4i_codec *scodec = snd_soc_card_get_drvdata(rtd->card);
u32 val;
if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
return -ENOTSUPP;
/* Flush the TX FIFO */
regmap_update_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
BIT(SUN4I_CODEC_DAC_FIFOC_FIFO_FLUSH),
@ -202,6 +271,15 @@ static int sun4i_codec_prepare(struct snd_pcm_substream *substream,
0);
return 0;
};
static int sun4i_codec_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
return sun4i_codec_prepare_playback(substream, dai);
return sun4i_codec_prepare_capture(substream, dai);
}
static unsigned long sun4i_codec_get_mod_freq(struct snd_pcm_hw_params *params)
@ -276,30 +354,34 @@ static int sun4i_codec_get_hw_rate(struct snd_pcm_hw_params *params)
}
}
static int sun4i_codec_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
static int sun4i_codec_hw_params_capture(struct sun4i_codec *scodec,
struct snd_pcm_hw_params *params,
unsigned int hwrate)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct sun4i_codec *scodec = snd_soc_card_get_drvdata(rtd->card);
unsigned long clk_freq;
int ret, hwrate;
u32 val;
if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
return -ENOTSUPP;
/* Set ADC sample rate */
regmap_update_bits(scodec->regmap, SUN4I_CODEC_ADC_FIFOC,
7 << SUN4I_CODEC_ADC_FIFOC_ADC_FS,
hwrate << SUN4I_CODEC_ADC_FIFOC_ADC_FS);
clk_freq = sun4i_codec_get_mod_freq(params);
if (!clk_freq)
return -EINVAL;
/* Set the number of channels we want to use */
if (params_channels(params) == 1)
regmap_update_bits(scodec->regmap, SUN4I_CODEC_ADC_FIFOC,
BIT(SUN4I_CODEC_ADC_FIFOC_MONO_EN),
BIT(SUN4I_CODEC_ADC_FIFOC_MONO_EN));
else
regmap_update_bits(scodec->regmap, SUN4I_CODEC_ADC_FIFOC,
BIT(SUN4I_CODEC_ADC_FIFOC_MONO_EN), 0);
ret = clk_set_rate(scodec->clk_module, clk_freq);
if (ret)
return ret;
return 0;
}
hwrate = sun4i_codec_get_hw_rate(params);
if (hwrate < 0)
return hwrate;
static int sun4i_codec_hw_params_playback(struct sun4i_codec *scodec,
struct snd_pcm_hw_params *params,
unsigned int hwrate)
{
u32 val;
/* Set DAC sample rate */
regmap_update_bits(scodec->regmap, SUN4I_CODEC_DAC_FIFOC,
@ -344,6 +426,34 @@ static int sun4i_codec_hw_params(struct snd_pcm_substream *substream,
return 0;
}
static int sun4i_codec_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct sun4i_codec *scodec = snd_soc_card_get_drvdata(rtd->card);
unsigned long clk_freq;
int hwrate;
clk_freq = sun4i_codec_get_mod_freq(params);
if (!clk_freq)
return -EINVAL;
if (clk_set_rate(scodec->clk_module, clk_freq))
return -EINVAL;
hwrate = sun4i_codec_get_hw_rate(params);
if (hwrate < 0)
return hwrate;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
return sun4i_codec_hw_params_playback(scodec, params,
hwrate);
return sun4i_codec_hw_params_capture(scodec, params,
hwrate);
}
static int sun4i_codec_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
@ -394,6 +504,20 @@ static struct snd_soc_dai_driver sun4i_codec_dai = {
SNDRV_PCM_FMTBIT_S32_LE,
.sig_bits = 24,
},
.capture = {
.stream_name = "Codec Capture",
.channels_min = 1,
.channels_max = 2,
.rate_min = 8000,
.rate_max = 192000,
.rates = SNDRV_PCM_RATE_8000_48000 |
SNDRV_PCM_RATE_96000 |
SNDRV_PCM_RATE_192000 |
SNDRV_PCM_RATE_KNOT,
.formats = SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_S32_LE,
.sig_bits = 24,
},
};
/*** Codec ***/
@ -429,11 +553,22 @@ static const struct snd_kcontrol_new sun4i_codec_pa_mixer_controls[] = {
};
static const struct snd_soc_dapm_widget sun4i_codec_dapm_widgets[] = {
/* Digital parts of the ADCs */
SND_SOC_DAPM_SUPPLY("ADC", SUN4I_CODEC_ADC_FIFOC,
SUN4I_CODEC_ADC_FIFOC_EN_AD, 0,
NULL, 0),
/* Digital parts of the DACs */
SND_SOC_DAPM_SUPPLY("DAC", SUN4I_CODEC_DAC_DPC,
SUN4I_CODEC_DAC_DPC_EN_DA, 0,
NULL, 0),
/* Analog parts of the ADCs */
SND_SOC_DAPM_ADC("Left ADC", "Codec Capture", SUN4I_CODEC_ADC_ACTL,
SUN4I_CODEC_ADC_ACTL_ADC_L_EN, 0),
SND_SOC_DAPM_ADC("Right ADC", "Codec Capture", SUN4I_CODEC_ADC_ACTL,
SUN4I_CODEC_ADC_ACTL_ADC_R_EN, 0),
/* Analog parts of the DACs */
SND_SOC_DAPM_DAC("Left DAC", "Codec Playback", SUN4I_CODEC_DAC_ACTL,
SUN4I_CODEC_DAC_ACTL_DACAENL, 0),
@ -452,6 +587,14 @@ static const struct snd_soc_dapm_widget sun4i_codec_dapm_widgets[] = {
SND_SOC_DAPM_SUPPLY("Mixer Enable", SUN4I_CODEC_DAC_ACTL,
SUN4I_CODEC_DAC_ACTL_MIXEN, 0, NULL, 0),
/* VMIC */
SND_SOC_DAPM_SUPPLY("VMIC", SUN4I_CODEC_ADC_ACTL,
SUN4I_CODEC_ADC_ACTL_VMICEN, 0, NULL, 0),
/* Mic Pre-Amplifiers */
SND_SOC_DAPM_PGA("MIC1 Pre-Amplifier", SUN4I_CODEC_ADC_ACTL,
SUN4I_CODEC_ADC_ACTL_PREG1EN, 0, NULL, 0),
/* Pre-Amplifier */
SND_SOC_DAPM_MIXER("Pre-Amplifier", SUN4I_CODEC_ADC_ACTL,
SUN4I_CODEC_ADC_ACTL_PA_EN, 0,
@ -460,15 +603,19 @@ static const struct snd_soc_dapm_widget sun4i_codec_dapm_widgets[] = {
SND_SOC_DAPM_SWITCH("Pre-Amplifier Mute", SND_SOC_NOPM, 0, 0,
&sun4i_codec_pa_mute),
SND_SOC_DAPM_INPUT("Mic1"),
SND_SOC_DAPM_OUTPUT("HP Right"),
SND_SOC_DAPM_OUTPUT("HP Left"),
};
static const struct snd_soc_dapm_route sun4i_codec_dapm_routes[] = {
/* Left DAC Routes */
/* Left ADC / DAC Routes */
{ "Left ADC", NULL, "ADC" },
{ "Left DAC", NULL, "DAC" },
/* Right DAC Routes */
/* Right ADC / DAC Routes */
{ "Right ADC", NULL, "ADC" },
{ "Right DAC", NULL, "DAC" },
/* Right Mixer Routes */
@ -490,6 +637,12 @@ static const struct snd_soc_dapm_route sun4i_codec_dapm_routes[] = {
{ "Pre-Amplifier Mute", "Switch", "Pre-Amplifier" },
{ "HP Right", NULL, "Pre-Amplifier Mute" },
{ "HP Left", NULL, "Pre-Amplifier Mute" },
/* Mic1 Routes */
{ "Left ADC", NULL, "MIC1 Pre-Amplifier" },
{ "Right ADC", NULL, "MIC1 Pre-Amplifier" },
{ "MIC1 Pre-Amplifier", NULL, "Mic1"},
{ "Mic1", NULL, "VMIC" },
};
static struct snd_soc_codec_driver sun4i_codec_codec = {
@ -515,7 +668,7 @@ static int sun4i_codec_dai_probe(struct snd_soc_dai *dai)
struct sun4i_codec *scodec = snd_soc_card_get_drvdata(card);
snd_soc_dai_init_dma_data(dai, &scodec->playback_dma_data,
NULL);
&scodec->capture_dma_data);
return 0;
}
@ -531,6 +684,14 @@ static struct snd_soc_dai_driver dummy_cpu_dai = {
.formats = SUN4I_CODEC_FORMATS,
.sig_bits = 24,
},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = SUN4I_CODEC_RATES,
.formats = SUN4I_CODEC_FORMATS,
.sig_bits = 24,
},
};
static const struct regmap_config sun4i_codec_regmap_config = {
@ -638,6 +799,11 @@ static int sun4i_codec_probe(struct platform_device *pdev)
scodec->playback_dma_data.maxburst = 4;
scodec->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
/* DMA configuration for RX FIFO */
scodec->capture_dma_data.addr = res->start + SUN4I_CODEC_ADC_RXDATA;
scodec->capture_dma_data.maxburst = 4;
scodec->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
ret = snd_soc_register_codec(&pdev->dev, &sun4i_codec_codec,
&sun4i_codec_dai, 1);
if (ret) {