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Diffstat (limited to 'sound/soc/sunxi/sun8i-codec.c')
-rw-r--r--sound/soc/sunxi/sun8i-codec.c103
1 files changed, 84 insertions, 19 deletions
diff --git a/sound/soc/sunxi/sun8i-codec.c b/sound/soc/sunxi/sun8i-codec.c
index 38349d85fb17..468fa5f71bd3 100644
--- a/sound/soc/sunxi/sun8i-codec.c
+++ b/sound/soc/sunxi/sun8i-codec.c
@@ -94,6 +94,8 @@
#define SUN8I_AIF1CLK_CTRL_AIF1_WORD_SIZ_MASK GENMASK(5, 4)
#define SUN8I_AIF1CLK_CTRL_AIF1_DATA_FMT_MASK GENMASK(3, 2)
+#define SUN8I_CODEC_PASSTHROUGH_SAMPLE_RATE 48000
+
#define SUN8I_CODEC_PCM_RATES (SNDRV_PCM_RATE_8000_48000|\
SNDRV_PCM_RATE_88200 |\
SNDRV_PCM_RATE_96000 |\
@@ -107,8 +109,11 @@ enum {
};
struct sun8i_codec_aif {
+ unsigned int sample_rate;
unsigned int slots;
unsigned int slot_width;
+ unsigned int active_streams : 2;
+ unsigned int open_streams : 2;
};
struct sun8i_codec_quirks {
@@ -149,11 +154,9 @@ static int sun8i_codec_runtime_suspend(struct device *dev)
return 0;
}
-static int sun8i_codec_get_hw_rate(struct snd_pcm_hw_params *params)
+static int sun8i_codec_get_hw_rate(unsigned int sample_rate)
{
- unsigned int rate = params_rate(params);
-
- switch (rate) {
+ switch (sample_rate) {
case 7350:
case 8000:
return 0x0;
@@ -186,6 +189,33 @@ static int sun8i_codec_get_hw_rate(struct snd_pcm_hw_params *params)
}
}
+static int sun8i_codec_update_sample_rate(struct sun8i_codec *scodec)
+{
+ unsigned int max_rate = 0;
+ int hw_rate, i;
+
+ for (i = SUN8I_CODEC_AIF1; i < SUN8I_CODEC_NAIFS; ++i) {
+ struct sun8i_codec_aif *aif = &scodec->aifs[i];
+
+ if (aif->active_streams)
+ max_rate = max(max_rate, aif->sample_rate);
+ }
+
+ /* Set the sample rate for ADC->DAC passthrough when no AIF is active. */
+ if (!max_rate)
+ max_rate = SUN8I_CODEC_PASSTHROUGH_SAMPLE_RATE;
+
+ hw_rate = sun8i_codec_get_hw_rate(max_rate);
+ if (hw_rate < 0)
+ return hw_rate;
+
+ regmap_update_bits(scodec->regmap, SUN8I_SYS_SR_CTRL,
+ SUN8I_SYS_SR_CTRL_AIF1_FS_MASK,
+ hw_rate << SUN8I_SYS_SR_CTRL_AIF1_FS);
+
+ return 0;
+}
+
static int sun8i_codec_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct sun8i_codec *scodec = snd_soc_dai_get_drvdata(dai);
@@ -355,9 +385,10 @@ static int sun8i_codec_hw_params(struct snd_pcm_substream *substream,
{
struct sun8i_codec *scodec = snd_soc_dai_get_drvdata(dai);
struct sun8i_codec_aif *aif = &scodec->aifs[dai->id];
+ unsigned int sample_rate = params_rate(params);
unsigned int slots = aif->slots ?: params_channels(params);
unsigned int slot_width = aif->slot_width ?: params_width(params);
- int lrck_div_order, sample_rate, word_size;
+ int lrck_div_order, word_size;
u8 bclk_div;
/* word size */
@@ -392,19 +423,30 @@ static int sun8i_codec_hw_params(struct snd_pcm_substream *substream,
(lrck_div_order - 4) << SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV);
/* BCLK divider (SYSCLK/BCLK ratio) */
- bclk_div = sun8i_codec_get_bclk_div(scodec, lrck_div_order, params_rate(params));
+ bclk_div = sun8i_codec_get_bclk_div(scodec, lrck_div_order, sample_rate);
regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL,
SUN8I_AIF1CLK_CTRL_AIF1_BCLK_DIV_MASK,
bclk_div << SUN8I_AIF1CLK_CTRL_AIF1_BCLK_DIV);
- sample_rate = sun8i_codec_get_hw_rate(params);
- if (sample_rate < 0)
- return sample_rate;
+ aif->sample_rate = sample_rate;
+ aif->open_streams |= BIT(substream->stream);
- regmap_update_bits(scodec->regmap, SUN8I_SYS_SR_CTRL,
- SUN8I_SYS_SR_CTRL_AIF1_FS_MASK,
- sample_rate << SUN8I_SYS_SR_CTRL_AIF1_FS);
+ return sun8i_codec_update_sample_rate(scodec);
+}
+
+static int sun8i_codec_hw_free(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct sun8i_codec *scodec = snd_soc_dai_get_drvdata(dai);
+ struct sun8i_codec_aif *aif = &scodec->aifs[dai->id];
+
+ if (aif->open_streams != BIT(substream->stream))
+ goto done;
+ aif->sample_rate = 0;
+
+done:
+ aif->open_streams &= ~BIT(substream->stream);
return 0;
}
@@ -412,6 +454,7 @@ static const struct snd_soc_dai_ops sun8i_codec_dai_ops = {
.set_fmt = sun8i_codec_set_fmt,
.set_tdm_slot = sun8i_codec_set_tdm_slot,
.hw_params = sun8i_codec_hw_params,
+ .hw_free = sun8i_codec_hw_free,
};
static struct snd_soc_dai_driver sun8i_codec_dais[] = {
@@ -442,6 +485,22 @@ static struct snd_soc_dai_driver sun8i_codec_dais[] = {
},
};
+static int sun8i_codec_aif_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
+ struct sun8i_codec *scodec = snd_soc_component_get_drvdata(component);
+ struct sun8i_codec_aif *aif = &scodec->aifs[w->sname[3] - '1'];
+ int stream = w->id == snd_soc_dapm_aif_out;
+
+ if (SND_SOC_DAPM_EVENT_ON(event))
+ aif->active_streams |= BIT(stream);
+ else
+ aif->active_streams &= ~BIT(stream);
+
+ return sun8i_codec_update_sample_rate(scodec);
+}
+
static const char *const sun8i_aif_stereo_mux_enum_values[] = {
"Stereo", "Reverse Stereo", "Sum Mono", "Mix Mono"
};
@@ -544,9 +603,11 @@ static const struct snd_soc_dapm_widget sun8i_codec_dapm_widgets[] = {
SUN8I_DAC_DIG_CTRL_ENDA, 0, NULL, 0),
/* AIF "ADC" Outputs */
- SND_SOC_DAPM_AIF_OUT("AIF1 AD0L", "AIF1 Capture", 0,
- SUN8I_AIF1_ADCDAT_CTRL,
- SUN8I_AIF1_ADCDAT_CTRL_AIF1_AD0L_ENA, 0),
+ SND_SOC_DAPM_AIF_OUT_E("AIF1 AD0L", "AIF1 Capture", 0,
+ SUN8I_AIF1_ADCDAT_CTRL,
+ SUN8I_AIF1_ADCDAT_CTRL_AIF1_AD0L_ENA, 0,
+ sun8i_codec_aif_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_AIF_OUT("AIF1 AD0R", "AIF1 Capture", 1,
SUN8I_AIF1_ADCDAT_CTRL,
SUN8I_AIF1_ADCDAT_CTRL_AIF1_AD0R_ENA, 0),
@@ -570,9 +631,11 @@ static const struct snd_soc_dapm_widget sun8i_codec_dapm_widgets[] = {
&sun8i_aif1_da0_stereo_mux_control),
/* AIF "DAC" Inputs */
- SND_SOC_DAPM_AIF_IN("AIF1 DA0L", "AIF1 Playback", 0,
- SUN8I_AIF1_DACDAT_CTRL,
- SUN8I_AIF1_DACDAT_CTRL_AIF1_DA0L_ENA, 0),
+ SND_SOC_DAPM_AIF_IN_E("AIF1 DA0L", "AIF1 Playback", 0,
+ SUN8I_AIF1_DACDAT_CTRL,
+ SUN8I_AIF1_DACDAT_CTRL_AIF1_DA0L_ENA, 0,
+ sun8i_codec_aif_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_AIF_IN("AIF1 DA0R", "AIF1 Playback", 1,
SUN8I_AIF1_DACDAT_CTRL,
SUN8I_AIF1_DACDAT_CTRL_AIF1_DA0R_ENA, 0),
@@ -727,6 +790,9 @@ static int sun8i_codec_component_probe(struct snd_soc_component *component)
BIT(SUN8I_SYSCLK_CTL_SYSCLK_SRC),
SUN8I_SYSCLK_CTL_SYSCLK_SRC_AIF1CLK);
+ /* Program the default sample rate. */
+ sun8i_codec_update_sample_rate(scodec);
+
return 0;
}
@@ -737,7 +803,6 @@ static const struct snd_soc_component_driver sun8i_soc_component = {
.num_dapm_routes = ARRAY_SIZE(sun8i_codec_dapm_routes),
.probe = sun8i_codec_component_probe,
.idle_bias_on = 1,
- .use_pmdown_time = 1,
.endianness = 1,
.non_legacy_dai_naming = 1,
};
generated by cgit (git 2.34.1) at 2025-03-28 07:08:43 +0000