[PATCH] max98357a:add dai without triggered by pcm
From: tony . zou . hq
Date: Thu Mar 28 2019 - 22:01:21 EST
From: Tony Zou <zoutao@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
max98357a's enable pin need setting independently
when max98357a is shared I2S with other codec.
add dai "max98357a-hifi" without pcm trigger,
and use "Spk PA Switch" to set the enable pin.
Signed-off-by: Tony Zou <zoutao@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
---
sound/soc/codecs/max98357a.c | 94 ++++++++++++++++++++++++++++++++++--------
1 file changed, 77 insertions(+), 17 deletions(-)
diff --git a/sound/soc/codecs/max98357a.c b/sound/soc/codecs/max98357a.c
index d469576..bd3e77b 100644
--- a/sound/soc/codecs/max98357a.c
+++ b/sound/soc/codecs/max98357a.c
@@ -51,12 +51,52 @@ static int max98357a_daiops_trigger(struct snd_pcm_substream *substream,
return 0;
}
+static const char * const ext_spk_text[] = {
+ "Off", "On"
+};
+
+static const struct soc_enum ext_spk_enum =
+ SOC_ENUM_SINGLE(SND_SOC_NOPM, 0,
+ ARRAY_SIZE(ext_spk_text), ext_spk_text);
+
+
+static const struct snd_kcontrol_new ext_spk_mux =
+ SOC_DAPM_ENUM("Spk PA Switch", ext_spk_enum);
+
+
+static int max98357a_enable_spk_pa(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
+ struct gpio_desc *sdmode = snd_soc_component_get_drvdata(cmpnt);
+
+ if (!sdmode)
+ return 0;
+
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ gpiod_set_value(sdmode, 1);
+ break;
+ case SND_SOC_DAPM_PRE_PMD:
+ gpiod_set_value(sdmode, 0);
+ break;
+ }
+ return 0;
+}
+
+
static const struct snd_soc_dapm_widget max98357a_dapm_widgets[] = {
SND_SOC_DAPM_OUTPUT("Speaker"),
+ SND_SOC_DAPM_SPK("Spk PA", max98357a_enable_spk_pa),
+ SND_SOC_DAPM_MUX("Spk PA Switch", SND_SOC_NOPM, 0, 0,
+ &ext_spk_mux),
};
static const struct snd_soc_dapm_route max98357a_dapm_routes[] = {
{"Speaker", NULL, "HiFi Playback"},
+ {"Speaker", NULL, "Spk PA"},
+ {"Spk PA", NULL, "Spk PA Switch"},
+ {"Spk PA Switch", "On", "HiFi Playback1"},
};
static int max98357a_component_probe(struct snd_soc_component *component)
@@ -88,30 +128,50 @@ static int max98357a_component_probe(struct snd_soc_component *component)
.trigger = max98357a_daiops_trigger,
};
-static struct snd_soc_dai_driver max98357a_dai_driver = {
- .name = "HiFi",
- .playback = {
- .stream_name = "HiFi Playback",
- .formats = SNDRV_PCM_FMTBIT_S16 |
- SNDRV_PCM_FMTBIT_S24 |
- SNDRV_PCM_FMTBIT_S32,
- .rates = SNDRV_PCM_RATE_8000 |
- SNDRV_PCM_RATE_16000 |
- SNDRV_PCM_RATE_48000 |
- SNDRV_PCM_RATE_96000,
- .rate_min = 8000,
- .rate_max = 96000,
- .channels_min = 1,
- .channels_max = 2,
+static struct snd_soc_dai_driver max98357a_dai_driver[] = {
+ {
+ .name = "HiFi",
+ .playback = {
+ .stream_name = "HiFi Playback",
+ .formats = SNDRV_PCM_FMTBIT_S16 |
+ SNDRV_PCM_FMTBIT_S24 |
+ SNDRV_PCM_FMTBIT_S32,
+ .rates = SNDRV_PCM_RATE_8000 |
+ SNDRV_PCM_RATE_16000 |
+ SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
+ .rate_min = 8000,
+ .rate_max = 96000,
+ .channels_min = 1,
+ .channels_max = 2,
+ },
+ .ops = &max98357a_dai_ops,
+ },
+ {
+ .name = "max98357a-hifi",
+ .playback = {
+ .stream_name = "HiFi Playback1",
+ .formats = SNDRV_PCM_FMTBIT_S16 |
+ SNDRV_PCM_FMTBIT_S24 |
+ SNDRV_PCM_FMTBIT_S32,
+ .rates = SNDRV_PCM_RATE_8000 |
+ SNDRV_PCM_RATE_16000 |
+ SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
+ .rate_min = 8000,
+ .rate_max = 96000,
+ .channels_min = 1,
+ .channels_max = 2,
+ },
+ .ops = NULL,
},
- .ops = &max98357a_dai_ops,
};
static int max98357a_platform_probe(struct platform_device *pdev)
{
return devm_snd_soc_register_component(&pdev->dev,
&max98357a_component_driver,
- &max98357a_dai_driver, 1);
+ max98357a_dai_driver, ARRAY_SIZE(max98357a_dai_driver));
}
static int max98357a_platform_remove(struct platform_device *pdev)
--
1.7.9.5