ASoC: Add function "rl6231_get_pre_div" to correct the dmic clock calculation

PATCH In review Oder Chiou 2 participants 2 messages Aug 5, 2015

Subsystems (3)

Sound ASoC Realtek audio codecs

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Oder Chiou

author maintainer

2015-08-05 02:03 UTC #0 lore raw

PATCH 1/1 ASoC: Add function "rl6231_get_pre_div" to correct the dmic clock calculation

Signed-off-by Bard Liao <[email protected]>

Signed-off-by Oder Chiou <[email protected]>

---
 sound/soc/codecs/rl6231.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 sound/soc/codecs/rl6231.h |  1 +
 sound/soc/codecs/rt5640.c |  7 ++++---
 sound/soc/codecs/rt5645.c |  7 ++++---
 sound/soc/codecs/rt5651.c |  7 ++++---
 sound/soc/codecs/rt5670.c |  7 ++++---
 sound/soc/codecs/rt5677.c |  5 ++++-
 7 files changed, 68 insertions(+), 13 deletions(-)

sound/soc/codecs/rl6231.c +47 -0

index 96f3e90..57e51c1 100644
@@ -11,10 +11,57 @@
  */
 
 #include <linux/module.h>
+#include <linux/regmap.h>
 
 #include "rl6231.h"
 
 /**
+ * rl6231_get_pre_div - Return the value of pre divider.
+ *
+ * @map: map for setting.
+ * @reg: register.
+ * @sft: shift.
+ *
+ * Return the value of pre divider from given register value.
+ * Return negative error code for unexpected register value.
+ */
+int rl6231_get_pre_div(struct regmap *map, unsigned int reg, int sft)
+{
+	int pd, val;
+
+	regmap_read(map, reg, &val);
+
+	val = (val >> sft) & 0x7;
+
+	switch (val) {
+	case 0:
+	case 1:
+	case 2:
+	case 3:
+		pd = val + 1;
+		break;
+	case 4:
+		pd = 6;
+		break;
+	case 5:
+		pd = 8;
+		break;
+	case 6:
+		pd = 12;
+		break;
+	case 7:
+		pd = 16;
+		break;
+	default:
+		pd = -EINVAL;
+		break;
+	}
+
+	return pd;
+}
+EXPORT_SYMBOL_GPL(rl6231_get_pre_div);
+
+/**
  * rl6231_calc_dmic_clk - Calculate the parameter of dmic.
  *
  * @rate: base clock rate.

sound/soc/codecs/rl6231.h +1 -0

index 0f7b057..4c77b44 100644
@@ -30,5 +30,6 @@ int rl6231_calc_dmic_clk(int rate);
 int rl6231_pll_calc(const unsigned int freq_in,
 	const unsigned int freq_out, struct rl6231_pll_code *pll_code);
 int rl6231_get_clk_info(int sclk, int rate);
+int rl6231_get_pre_div(struct regmap *map, unsigned int reg, int sft);
 
 #endif /* __RL6231_H__ */

sound/soc/codecs/rt5640.c +4 -3

index 119eca7..c557192 100644
@@ -459,10 +459,11 @@ static int set_dmic_clk(struct snd_soc_dapm_widget *w,
 {
 	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 	struct rt5640_priv *rt5640 = snd_soc_codec_get_drvdata(codec);
-	int idx = -EINVAL;
-
-	idx = rl6231_calc_dmic_clk(rt5640->sysclk);
+	int idx, rate;
 
+	rate = rt5640->sysclk / rl6231_get_pre_div(rt5640->regmap,
+		RT5640_ADDA_CLK1, RT5640_I2S_PD1_SFT);
+	idx = rl6231_calc_dmic_clk(rate);
 	if (idx < 0)
 		dev_err(codec->dev, "Failed to set DMIC clock\n");
 	else

sound/soc/codecs/rt5645.c +4 -3

index 9d54b34..4b01b63 100644
@@ -543,10 +543,11 @@ static int set_dmic_clk(struct snd_soc_dapm_widget *w,
 {
 	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 	struct rt5645_priv *rt5645 = snd_soc_codec_get_drvdata(codec);
-	int idx = -EINVAL;
-
-	idx = rl6231_calc_dmic_clk(rt5645->sysclk);
+	int idx, rate;
 
+	rate = rt5645->sysclk / rl6231_get_pre_div(rt5645->regmap,
+		RT5645_ADDA_CLK1, RT5645_I2S_PD1_SFT);
+	idx = rl6231_calc_dmic_clk(rate);
 	if (idx < 0)
 		dev_err(codec->dev, "Failed to set DMIC clock\n");
 	else

sound/soc/codecs/rt5651.c +4 -3

index 96295cc..8f7159b 100644
@@ -378,10 +378,11 @@ static int set_dmic_clk(struct snd_soc_dapm_widget *w,
 {
 	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 	struct rt5651_priv *rt5651 = snd_soc_codec_get_drvdata(codec);
-	int idx = -EINVAL;
-
-	idx = rl6231_calc_dmic_clk(rt5651->sysclk);
+	int idx, rate;
 
+	rate = rt5651->sysclk / rl6231_get_pre_div(rt5651->regmap,
+		RT5651_ADDA_CLK1, RT5651_I2S_PD1_SFT);
+	idx = rl6231_calc_dmic_clk(rate);
 	if (idx < 0)
 		dev_err(codec->dev, "Failed to set DMIC clock\n");
 	else

sound/soc/codecs/rt5670.c +4 -3

index fd6ffd2..177748a 100644
@@ -683,10 +683,11 @@ static int set_dmic_clk(struct snd_soc_dapm_widget *w,
 {
 	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 	struct rt5670_priv *rt5670 = snd_soc_codec_get_drvdata(codec);
-	int idx = -EINVAL;
-
-	idx = rl6231_calc_dmic_clk(rt5670->sysclk);
+	int idx, rate;
 
+	rate = rt5670->sysclk / rl6231_get_pre_div(rt5670->regmap,
+		RT5670_ADDA_CLK1, RT5670_I2S_PD1_SFT);
+	idx = rl6231_calc_dmic_clk(rate);
 	if (idx < 0)
 		dev_err(codec->dev, "Failed to set DMIC clock\n");
 	else

sound/soc/codecs/rt5677.c +4 -1

index 8d70911..3316700 100644
@@ -916,8 +916,11 @@ static int set_dmic_clk(struct snd_soc_dapm_widget *w,
 {
 	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 	struct rt5677_priv *rt5677 = snd_soc_codec_get_drvdata(codec);
-	int idx = rl6231_calc_dmic_clk(rt5677->lrck[RT5677_AIF1] << 8);
+	int idx, rate;
 
+	rate = rt5677->sysclk / rl6231_get_pre_div(rt5677->regmap,
+		RT5677_CLK_TREE_CTRL1, RT5677_I2S_PD1_SFT);
+	idx = rl6231_calc_dmic_clk(rate);
 	if (idx < 0)
 		dev_err(codec->dev, "Failed to set DMIC clock\n");
 	else

Signature · 1 line

1.8.1.1.439.g50a6b54

Mark Brown

maintainer

2015-08-05 09:53 UTC #1 lore raw

Applied "ASoC: Add function "rl6231_get_pre_div" to correct the dmic clock calculation" to the asoc tree

The patch

ASoC: Add function "rl6231_get_pre_div" to correct the dmic clock calculation

has been applied to the asoc tree at

git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks,
Mark

Quoted 1 line

From 00a6d6e50ff34aa2351746422e4a1c85c7765b15 Mon Sep 17 00:00:00 2001

From: Oder Chiou <[email protected]>
Date: Wed, 5 Aug 2015 10:03:18 +0800
Subject: [PATCH] ASoC: Add function "rl6231_get_pre_div" to correct the dmic
clock calculation