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

Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Oder Chiou 2015-08-05 10:03:18 +08:00 committed by Mark Brown
parent 213213d9d6
commit 00a6d6e50f
7 changed files with 68 additions and 13 deletions
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47
sound/soc/codecs/rl6231.c
View File

@ -11,9 +11,56 @@
*/
#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.
*

1
sound/soc/codecs/rl6231.h
View File

@ -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__ */

7
sound/soc/codecs/rt5640.c
View File

@ -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

7
sound/soc/codecs/rt5645.c
View File

@ -510,10 +510,11 @@ 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

7
sound/soc/codecs/rt5651.c
View File

@ -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

7
sound/soc/codecs/rt5670.c
View File

@ -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

5
sound/soc/codecs/rt5677.c
View File

@ -917,8 +917,11 @@ 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