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Diffstat (limited to 'sound/soc/codecs/max98090.c')
-rw-r--r--sound/soc/codecs/max98090.c31
1 files changed, 27 insertions, 4 deletions
diff --git a/sound/soc/codecs/max98090.c b/sound/soc/codecs/max98090.c
index 9b76f5a45115..f5fccc7a8e89 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 */