For certain projects, only a limited number of parameters are necessary. Therefore, it may be beneficial to add constraints that restrict the capacity of the PCM.
Signed-off-by: Trevor Wu trevor.wu@mediatek.com --- sound/soc/mediatek/mt8188/mt8188-mt6359.c | 145 +++++++++++++++++++++- 1 file changed, 144 insertions(+), 1 deletion(-)
diff --git a/sound/soc/mediatek/mt8188/mt8188-mt6359.c b/sound/soc/mediatek/mt8188/mt8188-mt6359.c index ac69c23e0da1..0e4e1b8c99e2 100644 --- a/sound/soc/mediatek/mt8188/mt8188-mt6359.c +++ b/sound/soc/mediatek/mt8188/mt8188-mt6359.c @@ -30,6 +30,7 @@ #define TEST_MISO_DONE_2 BIT(29)
#define NAU8825_HS_PRESENT BIT(0) +#define DPCM_FE_CONSTRAINT BIT(16)
/* * Maxim MAX98390 @@ -452,6 +453,143 @@ enum { DAI_LINK_UL_SRC_BE, };
+static int mt8188_playback_startup(struct snd_pcm_substream *substream) +{ + static const unsigned int rates[] = { + 48000 + }; + static const unsigned int channels[] = { + 2 + }; + static const struct snd_pcm_hw_constraint_list constraints_rates = { + .count = ARRAY_SIZE(rates), + .list = rates, + .mask = 0, + }; + static const struct snd_pcm_hw_constraint_list constraints_channels = { + .count = ARRAY_SIZE(channels), + .list = channels, + .mask = 0, + }; + + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct mt8188_mt6359_priv *priv = snd_soc_card_get_drvdata(rtd->card); + struct mt8188_card_data *data = (struct mt8188_card_data *)priv->private_data; + int ret; + + if (!(data->quirk & DPCM_FE_CONSTRAINT)) + return 0; + + ret = snd_pcm_hw_constraint_list(runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, + &constraints_rates); + if (ret < 0) { + dev_err(rtd->dev, "hw_constraint_list rate failed\n"); + return ret; + } + + ret = snd_pcm_hw_constraint_list(runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + &constraints_channels); + if (ret < 0) { + dev_err(rtd->dev, "hw_constraint_list channel failed\n"); + return ret; + } + + return 0; +} + +static const struct snd_soc_ops mt8188_playback_ops = { + .startup = mt8188_playback_startup, +}; + +static int mt8188_capture_startup(struct snd_pcm_substream *substream) +{ + static const unsigned int rates[] = { + 48000 + }; + static const struct snd_pcm_hw_constraint_list constraints_rates = { + .count = ARRAY_SIZE(rates), + .list = rates, + .mask = 0, + }; + + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct mt8188_mt6359_priv *priv = snd_soc_card_get_drvdata(rtd->card); + struct mt8188_card_data *data = (struct mt8188_card_data *)priv->private_data; + int ret; + + if (!(data->quirk & DPCM_FE_CONSTRAINT)) + return 0; + + ret = snd_pcm_hw_constraint_list(runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, + &constraints_rates); + if (ret < 0) { + dev_err(rtd->dev, "hw_constraint_list rate failed\n"); + return ret; + } + + return 0; +} + +static const struct snd_soc_ops mt8188_capture_ops = { + .startup = mt8188_capture_startup, +}; + +static int mt8188_hdmi_dptx_startup(struct snd_pcm_substream *substream) +{ + static const unsigned int rates[] = { + 48000 + }; + static const unsigned int channels[] = { + 2, 4, 6, 8 + }; + static const struct snd_pcm_hw_constraint_list constraints_rates = { + .count = ARRAY_SIZE(rates), + .list = rates, + .mask = 0, + }; + static const struct snd_pcm_hw_constraint_list constraints_channels = { + .count = ARRAY_SIZE(channels), + .list = channels, + .mask = 0, + }; + + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct mt8188_mt6359_priv *priv = snd_soc_card_get_drvdata(rtd->card); + struct mt8188_card_data *data = (struct mt8188_card_data *)priv->private_data; + int ret; + + if (!(data->quirk & DPCM_FE_CONSTRAINT)) + return 0; + + ret = snd_pcm_hw_constraint_list(runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, + &constraints_rates); + if (ret < 0) { + dev_err(rtd->dev, "hw_constraint_list rate failed\n"); + return ret; + } + + ret = snd_pcm_hw_constraint_list(runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + &constraints_channels); + if (ret < 0) { + dev_err(rtd->dev, "hw_constraint_list channel failed\n"); + return ret; + } + + return 0; +} + +static const struct snd_soc_ops mt8188_hdmi_dptx_playback_ops = { + .startup = mt8188_hdmi_dptx_startup, +}; + static int mt8188_dptx_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { @@ -723,6 +861,7 @@ static struct snd_soc_dai_link mt8188_mt6359_dai_links[] = { }, .dynamic = 1, .dpcm_playback = 1, + .ops = &mt8188_playback_ops, SND_SOC_DAILINK_REG(playback2), }, [DAI_LINK_DL3_FE] = { @@ -734,6 +873,7 @@ static struct snd_soc_dai_link mt8188_mt6359_dai_links[] = { }, .dynamic = 1, .dpcm_playback = 1, + .ops = &mt8188_playback_ops, SND_SOC_DAILINK_REG(playback3), }, [DAI_LINK_DL6_FE] = { @@ -778,6 +918,7 @@ static struct snd_soc_dai_link mt8188_mt6359_dai_links[] = { }, .dynamic = 1, .dpcm_playback = 1, + .ops = &mt8188_hdmi_dptx_playback_ops, SND_SOC_DAILINK_REG(playback10), }, [DAI_LINK_DL11_FE] = { @@ -833,6 +974,7 @@ static struct snd_soc_dai_link mt8188_mt6359_dai_links[] = { }, .dynamic = 1, .dpcm_capture = 1, + .ops = &mt8188_capture_ops, SND_SOC_DAILINK_REG(capture4), }, [DAI_LINK_UL5_FE] = { @@ -844,6 +986,7 @@ static struct snd_soc_dai_link mt8188_mt6359_dai_links[] = { }, .dynamic = 1, .dpcm_capture = 1, + .ops = &mt8188_capture_ops, SND_SOC_DAILINK_REG(capture5), }, [DAI_LINK_UL6_FE] = { @@ -1122,7 +1265,7 @@ static struct mt8188_card_data mt8188_evb_card = {
static struct mt8188_card_data mt8188_nau8825_card = { .name = "mt8188_nau8825", - .quirk = NAU8825_HS_PRESENT, + .quirk = NAU8825_HS_PRESENT | DPCM_FE_CONSTRAINT, };
static const struct of_device_id mt8188_mt6359_dt_match[] = {