From c6f8769b03749b244331699471bef02c9b9d5ebc Mon Sep 17 00:00:00 2001 From: Nicolin Chen Date: Thu, 28 Jul 2016 14:57:16 -0700 Subject: [PATCH] ASoC: rt5659: Add mclk controls The codec driver should control the mclk. So this patch adds this support. Signed-off-by: Nicolin Chen Acked-by: Rob Herring Signed-off-by: Mark Brown --- .../devicetree/bindings/sound/rt5659.txt | 3 +++ sound/soc/codecs/rt5659.c | 24 +++++++++++++++++++ sound/soc/codecs/rt5659.h | 1 + 3 files changed, 28 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/rt5659.txt b/Documentation/devicetree/bindings/sound/rt5659.txt index 5f79e7fde032..1766e0543fc5 100644 --- a/Documentation/devicetree/bindings/sound/rt5659.txt +++ b/Documentation/devicetree/bindings/sound/rt5659.txt @@ -12,6 +12,9 @@ Required properties: Optional properties: +- clocks: The phandle of the master clock to the CODEC +- clock-names: Should be "mclk" + - realtek,in1-differential - realtek,in3-differential - realtek,in4-differential diff --git a/sound/soc/codecs/rt5659.c b/sound/soc/codecs/rt5659.c index 1b30914c2d91..42c183f97c31 100644 --- a/sound/soc/codecs/rt5659.c +++ b/sound/soc/codecs/rt5659.c @@ -9,6 +9,7 @@ * published by the Free Software Foundation. */ +#include #include #include #include @@ -3565,7 +3566,9 @@ static int rt5659_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio) static int rt5659_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { + struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec); struct rt5659_priv *rt5659 = snd_soc_codec_get_drvdata(codec); + int ret; switch (level) { case SND_SOC_BIAS_PREPARE: @@ -3582,6 +3585,17 @@ static int rt5659_set_bias_level(struct snd_soc_codec *codec, RT5659_PWR_FV1 | RT5659_PWR_FV2); break; + case SND_SOC_BIAS_STANDBY: + if (dapm->bias_level == SND_SOC_BIAS_OFF) { + ret = clk_prepare_enable(rt5659->mclk); + if (ret) { + dev_err(codec->dev, + "failed to enable MCLK: %d\n", ret); + return ret; + } + } + break; + case SND_SOC_BIAS_OFF: regmap_update_bits(rt5659->regmap, RT5659_PWR_DIG_1, RT5659_PWR_LDO, 0); @@ -3591,6 +3605,7 @@ static int rt5659_set_bias_level(struct snd_soc_codec *codec, RT5659_PWR_MB | RT5659_PWR_VREF2); regmap_update_bits(rt5659->regmap, RT5659_DIG_MISC, RT5659_DIG_GATE_CTRL, 0); + clk_disable_unprepare(rt5659->mclk); break; default: @@ -4020,6 +4035,15 @@ static int rt5659_i2c_probe(struct i2c_client *i2c, regmap_write(rt5659->regmap, RT5659_RESET, 0); + /* Check if MCLK provided */ + rt5659->mclk = devm_clk_get(&i2c->dev, "mclk"); + if (IS_ERR(rt5659->mclk)) { + if (PTR_ERR(rt5659->mclk) != -ENOENT) + return PTR_ERR(rt5659->mclk); + /* Otherwise mark the mclk pointer to NULL */ + rt5659->mclk = NULL; + } + rt5659_calibrate(rt5659); /* line in diff mode*/ diff --git a/sound/soc/codecs/rt5659.h b/sound/soc/codecs/rt5659.h index d31c9e5bcec8..d69b0eb5a334 100644 --- a/sound/soc/codecs/rt5659.h +++ b/sound/soc/codecs/rt5659.h @@ -1796,6 +1796,7 @@ struct rt5659_priv { struct gpio_desc *gpiod_reset; struct snd_soc_jack *hs_jack; struct delayed_work jack_detect_work; + struct clk *mclk; int sysclk; int sysclk_src;