[alsa-devel] [PATCH 15/19] ASoC: rt5640: add ASRC support
Pierre-Louis Bossart
pierre-louis.bossart at linux.intel.com
Fri Dec 18 03:35:52 CET 2015
From: Jack Yu <jack.yu at realtek.com>
Signed-off-by: Jack Yu <jack.yu at realtek.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
---
sound/soc/codecs/rt5640.c | 102 ++++++++++++++++++++++++++++++++++++++++++++++
sound/soc/codecs/rt5640.h | 17 ++++++++
2 files changed, 119 insertions(+)
diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c
index f2beb1a..18f2d3b 100644
--- a/sound/soc/codecs/rt5640.c
+++ b/sound/soc/codecs/rt5640.c
@@ -488,6 +488,18 @@ static int is_sys_clk_from_pll(struct snd_soc_dapm_widget *source,
return 0;
}
+static int is_using_asrc(struct snd_soc_dapm_widget *source,
+ struct snd_soc_dapm_widget *sink)
+{
+ struct snd_soc_codec *codec = snd_soc_dapm_to_codec(source->dapm);
+ struct rt5640_priv *rt5640 = snd_soc_codec_get_drvdata(codec);
+
+ if (!rt5640->asrc_en)
+ return 0;
+
+ return 1;
+}
+
/* Digital Mixer */
static const struct snd_kcontrol_new rt5640_sto_adc_l_mix[] = {
SOC_DAPM_SINGLE("ADC1 Switch", RT5640_STO_ADC_MIXER,
@@ -1059,6 +1071,20 @@ static int rt5640_hp_post_event(struct snd_soc_dapm_widget *w,
static const struct snd_soc_dapm_widget rt5640_dapm_widgets[] = {
SND_SOC_DAPM_SUPPLY("PLL1", RT5640_PWR_ANLG2,
RT5640_PWR_PLL_BIT, 0, NULL, 0),
+
+ /* ASRC */
+ SND_SOC_DAPM_SUPPLY_S("Stereo Filter ASRC", 1, RT5640_ASRC_1,
+ 15, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY_S("I2S2 Filter ASRC", 1, RT5640_ASRC_1,
+ 12, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY_S("I2S2 ASRC", 1, RT5640_ASRC_1,
+ 11, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY_S("DMIC1 ASRC", 1, RT5640_ASRC_1,
+ 9, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY_S("DMIC2 ASRC", 1, RT5640_ASRC_1,
+ 8, 0, NULL, 0),
+
+
/* Input Side */
/* micbias */
SND_SOC_DAPM_SUPPLY("LDO2", RT5640_PWR_ANLG1,
@@ -1319,6 +1345,12 @@ static const struct snd_soc_dapm_widget rt5639_specific_dapm_widgets[] = {
};
static const struct snd_soc_dapm_route rt5640_dapm_routes[] = {
+ { "I2S1", NULL, "Stereo Filter ASRC", is_using_asrc },
+ { "I2S2", NULL, "I2S2 ASRC", is_using_asrc },
+ { "I2S2", NULL, "I2S2 Filter ASRC", is_using_asrc },
+ { "DMIC1", NULL, "DMIC1 ASRC", is_using_asrc },
+ { "DMIC2", NULL, "DMIC2 ASRC", is_using_asrc },
+
{"IN1P", NULL, "LDO2"},
{"IN2P", NULL, "LDO2"},
{"IN3P", NULL, "LDO2"},
@@ -1981,6 +2013,76 @@ int rt5640_dmic_enable(struct snd_soc_codec *codec,
}
EXPORT_SYMBOL_GPL(rt5640_dmic_enable);
+int rt5640_sel_asrc_clk_src(struct snd_soc_codec *codec,
+ unsigned int filter_mask, unsigned int clk_src)
+{
+ struct rt5640_priv *rt5640 = snd_soc_codec_get_drvdata(codec);
+ unsigned int asrc2_mask = 0;
+ unsigned int asrc2_value = 0;
+
+ switch (clk_src) {
+ case RT5640_CLK_SEL_SYS:
+ case RT5640_CLK_SEL_ASRC:
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ if (!filter_mask)
+ return -EINVAL;
+
+ if (filter_mask & RT5640_DA_STEREO_FILTER) {
+ asrc2_mask |= RT5640_STO_DAC_M_MASK;
+ asrc2_value = (asrc2_value & ~RT5640_STO_DAC_M_MASK)
+ | (clk_src << RT5640_STO_DAC_M_SFT);
+ }
+
+ if (filter_mask & RT5640_DA_MONO_L_FILTER) {
+ asrc2_mask |= RT5640_MDA_L_M_MASK;
+ asrc2_value = (asrc2_value & ~RT5640_MDA_L_M_MASK)
+ | (clk_src << RT5640_MDA_L_M_SFT);
+ }
+
+ if (filter_mask & RT5640_DA_MONO_R_FILTER) {
+ asrc2_mask |= RT5640_MDA_R_M_MASK;
+ asrc2_value = (asrc2_value & ~RT5640_MDA_R_M_MASK)
+ | (clk_src << RT5640_MDA_R_M_SFT);
+ }
+
+ if (filter_mask & RT5640_AD_STEREO_FILTER) {
+ asrc2_mask |= RT5640_ADC_M_MASK;
+ asrc2_value = (asrc2_value & ~RT5640_ADC_M_MASK)
+ | (clk_src << RT5640_ADC_M_SFT);
+ }
+
+ if (filter_mask & RT5640_AD_MONO_L_FILTER) {
+ asrc2_mask |= RT5640_MAD_L_M_MASK;
+ asrc2_value = (asrc2_value & ~RT5640_MAD_L_M_MASK)
+ | (clk_src << RT5640_MAD_L_M_SFT);
+ }
+
+ if (filter_mask & RT5640_AD_MONO_R_FILTER) {
+ asrc2_mask |= RT5640_MAD_R_M_MASK;
+ asrc2_value = (asrc2_value & ~RT5640_MAD_R_M_MASK)
+ | (clk_src << RT5640_MAD_R_M_SFT);
+ }
+
+ snd_soc_update_bits(codec, RT5640_ASRC_2,
+ asrc2_mask, asrc2_value);
+
+ if (snd_soc_read(codec, RT5640_ASRC_2)) {
+ rt5640->asrc_en = true;
+ snd_soc_update_bits(codec, RT5640_JD_CTRL, 0x3, 0x3);
+ } else {
+ rt5640->asrc_en = false;
+ snd_soc_update_bits(codec, RT5640_JD_CTRL, 0x3, 0x0);
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rt5640_sel_asrc_clk_src);
+
static int rt5640_probe(struct snd_soc_codec *codec)
{
struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
diff --git a/sound/soc/codecs/rt5640.h b/sound/soc/codecs/rt5640.h
index 3deb8ba..83a7150 100644
--- a/sound/soc/codecs/rt5640.h
+++ b/sound/soc/codecs/rt5640.h
@@ -1033,6 +1033,10 @@
#define RT5640_DMIC_2_M_NOR (0x0 << 8)
#define RT5640_DMIC_2_M_ASYN (0x1 << 8)
+/* ASRC clock source selection (0x84) */
+#define RT5640_CLK_SEL_SYS (0x0)
+#define RT5640_CLK_SEL_ASRC (0x1)
+
/* ASRC Control 2 (0x84) */
#define RT5640_MDA_L_M_MASK (0x1 << 15)
#define RT5640_MDA_L_M_SFT 15
@@ -2079,6 +2083,16 @@ enum {
RT5640_DMIC2,
};
+/* filter mask */
+enum {
+ RT5640_DA_STEREO_FILTER = 0x1,
+ RT5640_DA_MONO_L_FILTER = (0x1 << 1),
+ RT5640_DA_MONO_R_FILTER = (0x1 << 2),
+ RT5640_AD_STEREO_FILTER = (0x1 << 3),
+ RT5640_AD_MONO_L_FILTER = (0x1 << 4),
+ RT5640_AD_MONO_R_FILTER = (0x1 << 5),
+};
+
struct rt5640_priv {
struct snd_soc_codec *codec;
struct rt5640_platform_data pdata;
@@ -2095,9 +2109,12 @@ struct rt5640_priv {
int pll_out;
bool hp_mute;
+ bool asrc_en;
};
int rt5640_dmic_enable(struct snd_soc_codec *codec,
bool dmic1_data_pin, bool dmic2_data_pin);
+int rt5640_sel_asrc_clk_src(struct snd_soc_codec *codec,
+ unsigned int filter_mask, unsigned int clk_src);
#endif
--
1.9.1
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