ASoC: rt5677: Add DMIC2 clock selection

There are two pins can be used for rt5677's DMIC2 clock. This patch
add the select options for it.

Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/include/sound/rt5677.h b/include/sound/rt5677.h
index 3da14313bcfc158214c3f984c7adaa22c4a5be33..a676717f74f4ee0d1910528295d30116dc38a07d 100644 (file)
--- a/include/sound/rt5677.h
+++ b/include/sound/rt5677.h
@@ -12,10 +12,18 @@
 #ifndef __LINUX_SND_RT5677_H
 #define __LINUX_SND_RT5677_H
 
+enum rt5677_dmic2_clk {
+       RT5677_DMIC_CLK1 = 0,
+       RT5677_DMIC_CLK2 = 1,
+};
+
+
 struct rt5677_platform_data {
        /* IN1 IN2 can optionally be differential */
        bool in1_diff;
        bool in2_diff;
+       /* DMIC2 clock source selection */
+       enum rt5677_dmic2_clk dmic2_clk_pin;
 };
 
 #endif

diff --git a/sound/soc/codecs/rt5677.c b/sound/soc/codecs/rt5677.c
index 67f14556462ff35bd6601062fc55a40ec2a96310..f0b751bf1d6c50e410181aede4432ef6048cbde9 100644 (file)
--- a/sound/soc/codecs/rt5677.c
+++ b/sound/soc/codecs/rt5677.c
@@ -1700,14 +1700,19 @@ static const struct snd_soc_dapm_widget rt5677_dapm_widgets[] = {
 
        SND_SOC_DAPM_INPUT("Haptic Generator"),
 
-       SND_SOC_DAPM_PGA("DMIC1", RT5677_DMIC_CTRL1, RT5677_DMIC_1_EN_SFT, 0,
-               NULL, 0),
-       SND_SOC_DAPM_PGA("DMIC2", RT5677_DMIC_CTRL1, RT5677_DMIC_2_EN_SFT, 0,
-               NULL, 0),
-       SND_SOC_DAPM_PGA("DMIC3", RT5677_DMIC_CTRL1, RT5677_DMIC_3_EN_SFT, 0,
-               NULL, 0),
-       SND_SOC_DAPM_PGA("DMIC4", RT5677_DMIC_CTRL2, RT5677_DMIC_4_EN_SFT, 0,
-               NULL, 0),
+       SND_SOC_DAPM_PGA("DMIC1", SND_SOC_NOPM, 0, 0, NULL, 0),
+       SND_SOC_DAPM_PGA("DMIC2", SND_SOC_NOPM, 0, 0, NULL, 0),
+       SND_SOC_DAPM_PGA("DMIC3", SND_SOC_NOPM, 0, 0, NULL, 0),
+       SND_SOC_DAPM_PGA("DMIC4", SND_SOC_NOPM, 0, 0, NULL, 0),
+
+       SND_SOC_DAPM_SUPPLY("DMIC1 power", RT5677_DMIC_CTRL1,
+               RT5677_DMIC_1_EN_SFT, 0, NULL, 0),
+       SND_SOC_DAPM_SUPPLY("DMIC2 power", RT5677_DMIC_CTRL1,
+               RT5677_DMIC_2_EN_SFT, 0, NULL, 0),
+       SND_SOC_DAPM_SUPPLY("DMIC3 power", RT5677_DMIC_CTRL1,
+               RT5677_DMIC_3_EN_SFT, 0, NULL, 0),
+       SND_SOC_DAPM_SUPPLY("DMIC4 power", RT5677_DMIC_CTRL2,
+               RT5677_DMIC_4_EN_SFT, 0, NULL, 0),
 
        SND_SOC_DAPM_SUPPLY("DMIC CLK", SND_SOC_NOPM, 0, 0,
                set_dmic_clk, SND_SOC_DAPM_PRE_PMU),
@@ -2130,6 +2135,13 @@ static const struct snd_soc_dapm_route rt5677_dapm_routes[] = {
        { "DMIC L4", NULL, "DMIC CLK" },
        { "DMIC R4", NULL, "DMIC CLK" },
 
+       { "DMIC L1", NULL, "DMIC1 power" },
+       { "DMIC R1", NULL, "DMIC1 power" },
+       { "DMIC L3", NULL, "DMIC3 power" },
+       { "DMIC R3", NULL, "DMIC3 power" },
+       { "DMIC L4", NULL, "DMIC4 power" },
+       { "DMIC R4", NULL, "DMIC4 power" },
+
        { "BST1", NULL, "IN1P" },
        { "BST1", NULL, "IN1N" },
        { "BST2", NULL, "IN2P" },
@@ -2793,6 +2805,16 @@ static const struct snd_soc_dapm_route rt5677_dapm_routes[] = {
        { "PDM2R", NULL, "PDM2 R Mux" },
 };
 
+static const struct snd_soc_dapm_route rt5677_dmic2_clk_1[] = {
+       { "DMIC L2", NULL, "DMIC1 power" },
+       { "DMIC R2", NULL, "DMIC1 power" },
+};
+
+static const struct snd_soc_dapm_route rt5677_dmic2_clk_2[] = {
+       { "DMIC L2", NULL, "DMIC2 power" },
+       { "DMIC R2", NULL, "DMIC2 power" },
+};
+
 static int rt5677_hw_params(struct snd_pcm_substream *substream,
        struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 {
@@ -3144,6 +3166,16 @@ static int rt5677_probe(struct snd_soc_codec *codec)
 
        rt5677->codec = codec;
 
+       if (rt5677->pdata.dmic2_clk_pin == RT5677_DMIC_CLK2) {
+               snd_soc_dapm_add_routes(&codec->dapm,
+                       rt5677_dmic2_clk_2,
+                       ARRAY_SIZE(rt5677_dmic2_clk_2));
+       } else { /*use dmic1 clock by default*/
+               snd_soc_dapm_add_routes(&codec->dapm,
+                       rt5677_dmic2_clk_1,
+                       ARRAY_SIZE(rt5677_dmic2_clk_1));
+       }
+
        rt5677_set_bias_level(codec, SND_SOC_BIAS_OFF);
 
        regmap_write(rt5677->regmap, RT5677_DIG_MISC, 0x0020);
@@ -3381,6 +3413,15 @@ static int rt5677_i2c_probe(struct i2c_client *i2c,
                regmap_update_bits(rt5677->regmap, RT5677_IN1,
                                        RT5677_IN_DF2, RT5677_IN_DF2);
 
+       if (rt5677->pdata.dmic2_clk_pin == RT5677_DMIC_CLK2) {
+               regmap_update_bits(rt5677->regmap, RT5677_GEN_CTRL2,
+                                       RT5677_GPIO5_FUNC_MASK,
+                                       RT5677_GPIO5_FUNC_DMIC);
+               regmap_update_bits(rt5677->regmap, RT5677_GPIO_CTRL2,
+                                       RT5677_GPIO5_DIR_MASK,
+                                       RT5677_GPIO5_DIR_OUT);
+       }
+
        return snd_soc_register_codec(&i2c->dev, &soc_codec_dev_rt5677,
                                      rt5677_dai, ARRAY_SIZE(rt5677_dai));
 }

diff --git a/sound/soc/codecs/rt5677.h b/sound/soc/codecs/rt5677.h
index 863393e620960c7a621b6b431741cb7a1a50ecbf..8791ab9637f3125f8dee00167c93ddedd4e4625f 100644 (file)
--- a/sound/soc/codecs/rt5677.h
+++ b/sound/soc/codecs/rt5677.h
@@ -1363,6 +1363,11 @@
 #define RT5677_SEL_SRC_IB01                    (0x1 << 0)
 #define RT5677_SEL_SRC_IB01_SFT                        0
 
+/* GPIO Control 2 (0xc1) */
+#define RT5677_GPIO5_DIR_MASK                  (0x1 << 14)
+#define RT5677_GPIO5_DIR_IN                    (0x0 << 14)
+#define RT5677_GPIO5_DIR_OUT                   (0x1 << 14)
+
 /* Virtual DSP Mixer Control (0xf7 0xf8 0xf9) */
 #define RT5677_DSP_IB_01_H                     (0x1 << 15)
 #define RT5677_DSP_IB_01_H_SFT                 15
@@ -1393,6 +1398,11 @@
 #define RT5677_DSP_IB_9_L                      (0x1 << 1)
 #define RT5677_DSP_IB_9_L_SFT                  1
 
+/* General Control2 (0xfc)*/
+#define RT5677_GPIO5_FUNC_MASK                 (0x1 << 9)
+#define RT5677_GPIO5_FUNC_GPIO                 (0x0 << 9)
+#define RT5677_GPIO5_FUNC_DMIC                 (0x1 << 9)
+
 /* System Clock Source */
 enum {
        RT5677_SCLK_S_MCLK,