diff options
| -rw-r--r-- | Documentation/devicetree/bindings/sound/max98090.txt | 6 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/sound/max98095.txt | 6 | ||||
| -rw-r--r-- | sound/soc/codecs/max98090.c | 31 | ||||
| -rw-r--r-- | sound/soc/codecs/max98090.h | 1 | ||||
| -rw-r--r-- | sound/soc/codecs/max98095.c | 24 |
5 files changed, 64 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/sound/max98090.txt b/Documentation/devicetree/bindings/sound/max98090.txt index e4c8b36..a5e63fa 100644 --- a/Documentation/devicetree/bindings/sound/max98090.txt +++ b/Documentation/devicetree/bindings/sound/max98090.txt @@ -10,6 +10,12 @@ Required properties: - interrupts : The CODEC's interrupt output. +Optional properties: + +- clocks: The phandle of the master clock to the CODEC + +- clock-names: Should be "mclk" + Pins on the device (for linking into audio routes): * MIC1 diff --git a/Documentation/devicetree/bindings/sound/max98095.txt b/Documentation/devicetree/bindings/sound/max98095.txt index bacbeaa..318a4c8 100644 --- a/Documentation/devicetree/bindings/sound/max98095.txt +++ b/Documentation/devicetree/bindings/sound/max98095.txt @@ -8,6 +8,12 @@ Required properties: - reg : The I2C address of the device. +Optional properties: + +- clocks: The phandle of the master clock to the CODEC + +- clock-names: Should be "mclk" + Example: max98095: codec@11 { diff --git a/sound/soc/codecs/max98090.c b/sound/soc/codecs/max98090.c index 9b76f5a..f5fccc7 100644 --- a/sound/soc/codecs/max98090.c +++ b/sound/soc/codecs/max98090.c @@ -17,6 +17,7 @@ #include <linux/regmap.h> #include <linux/slab.h> #include <linux/acpi.h> +#include <linux/clk.h> #include <sound/jack.h> #include <sound/pcm.h> #include <sound/pcm_params.h> @@ -1547,19 +1548,19 @@ static const int lrclk_rates[] = { }; static const int user_pclk_rates[] = { - 13000000, 13000000 + 13000000, 13000000, 19200000, 19200000, }; static const int user_lrclk_rates[] = { - 44100, 48000 + 44100, 48000, 44100, 48000, }; static const unsigned long long ni_value[] = { - 3528, 768 + 3528, 768, 441, 8 }; static const unsigned long long mi_value[] = { - 8125, 1625 + 8125, 1625, 1500, 25 }; static void max98090_configure_bclk(struct snd_soc_codec *codec) @@ -1800,6 +1801,19 @@ static int max98090_set_bias_level(struct snd_soc_codec *codec, break; case SND_SOC_BIAS_PREPARE: + /* + * SND_SOC_BIAS_PREPARE is called while preparing for a + * transition to ON or away from ON. If current bias_level + * is SND_SOC_BIAS_ON, then it is preparing for a transition + * away from ON. Disable the clock in that case, otherwise + * enable it. + */ + if (!IS_ERR(max98090->mclk)) { + if (codec->dapm.bias_level == SND_SOC_BIAS_ON) + clk_disable_unprepare(max98090->mclk); + else + clk_prepare_enable(max98090->mclk); + } break; case SND_SOC_BIAS_STANDBY: @@ -1929,6 +1943,11 @@ static int max98090_dai_set_sysclk(struct snd_soc_dai *dai, if (freq == max98090->sysclk) return 0; + if (!IS_ERR(max98090->mclk)) { + freq = clk_round_rate(max98090->mclk, freq); + clk_set_rate(max98090->mclk, freq); + } + /* Setup clocks for slave mode, and using the PLL * PSCLK = 0x01 (when master clk is 10MHz to 20MHz) * 0x02 (when master clk is 20MHz to 40MHz).. @@ -2213,6 +2232,10 @@ static int max98090_probe(struct snd_soc_codec *codec) dev_dbg(codec->dev, "max98090_probe\n"); + max98090->mclk = devm_clk_get(codec->dev, "mclk"); + if (PTR_ERR(max98090->mclk) == -EPROBE_DEFER) + return -EPROBE_DEFER; + max98090->codec = codec; /* Reset the codec, the DSP core, and disable all interrupts */ diff --git a/sound/soc/codecs/max98090.h b/sound/soc/codecs/max98090.h index 5a3c8d0..cf1b606 100644 --- a/sound/soc/codecs/max98090.h +++ b/sound/soc/codecs/max98090.h @@ -1524,6 +1524,7 @@ struct max98090_priv { struct snd_soc_codec *codec; enum max98090_type devtype; struct max98090_pdata *pdata; + struct clk *mclk; unsigned int sysclk; unsigned int bclk; unsigned int lrclk; diff --git a/sound/soc/codecs/max98095.c b/sound/soc/codecs/max98095.c index d6c1e4c..89ec004 100644 --- a/sound/soc/codecs/max98095.c +++ b/sound/soc/codecs/max98095.c @@ -15,6 +15,7 @@ #include <linux/delay.h> #include <linux/pm.h> #include <linux/i2c.h> +#include <linux/clk.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> @@ -42,6 +43,7 @@ struct max98095_priv { struct regmap *regmap; enum max98095_type devtype; struct max98095_pdata *pdata; + struct clk *mclk; unsigned int sysclk; struct max98095_cdata dai[3]; const char **eq_texts; @@ -1395,6 +1397,11 @@ static int max98095_dai_set_sysclk(struct snd_soc_dai *dai, if (freq == max98095->sysclk) return 0; + if (!IS_ERR(max98095->mclk)) { + freq = clk_round_rate(max98095->mclk, freq); + clk_set_rate(max98095->mclk, freq); + } + /* Setup clocks for slave mode, and using the PLL * PSCLK = 0x01 (when master clk is 10MHz to 20MHz) * 0x02 (when master clk is 20MHz to 40MHz).. @@ -1634,6 +1641,19 @@ static int max98095_set_bias_level(struct snd_soc_codec *codec, break; case SND_SOC_BIAS_PREPARE: + /* + * SND_SOC_BIAS_PREPARE is called while preparing for a + * transition to ON or away from ON. If current bias_level + * is SND_SOC_BIAS_ON, then it is preparing for a transition + * away from ON. Disable the clock in that case, otherwise + * enable it. + */ + if (!IS_ERR(max98095->mclk)) { + if (codec->dapm.bias_level == SND_SOC_BIAS_ON) + clk_disable_unprepare(max98095->mclk); + else + clk_prepare_enable(max98095->mclk); + } break; case SND_SOC_BIAS_STANDBY: @@ -2238,6 +2258,10 @@ static int max98095_probe(struct snd_soc_codec *codec) struct i2c_client *client; int ret = 0; + max98095->mclk = devm_clk_get(codec->dev, "mclk"); + if (PTR_ERR(max98095->mclk) == -EPROBE_DEFER) + return -EPROBE_DEFER; + /* reset the codec, the DSP core, and disable all interrupts */ max98095_reset(codec); |
