ASoC: Automatically manage ALC coefficients for WM8960 (db059c0f) · Commits · 戴 / test

sound/soc/codecs/wm8960.c

+22 −0

Original line number	Diff line number	Diff line
		@@ -487,6 +487,21 @@ static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
		return 0;
		}

		static struct {
		int rate;
		unsigned int val;
		} alc_rates[] = {
		{ 48000, 0 },
		{ 44100, 0 },
		{ 32000, 1 },
		{ 22050, 2 },
		{ 24000, 2 },
		{ 16000, 3 },
		{ 11250, 4 },
		{ 12000, 4 },
		{ 8000, 5 },
		};

		static int wm8960_hw_params(struct snd_pcm_substream *substream,
		struct snd_pcm_hw_params *params,
		struct snd_soc_dai *dai)
		@@ -496,6 +511,7 @@ static int wm8960_hw_params(struct snd_pcm_substream *substream,
		struct snd_soc_codec *codec = socdev->card->codec;
		struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
		u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;
		int i;

		/* bit size */
		switch (params_format(params)) {
		@@ -513,6 +529,12 @@ static int wm8960_hw_params(struct snd_pcm_substream *substream,
		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
		wm8960->playback_fs = params_rate(params);
		wm8960_set_deemph(codec);
		} else {
		for (i = 0; i < ARRAY_SIZE(alc_rates); i++)
		if (alc_rates[i].rate == params_rate(params))
		snd_soc_update_bits(codec,
		WM8960_ADDCTL3, 0x7,
		alc_rates[i].val);
		}

		/* set iface */