ASoC: rt5670: Add IRQ function

This patch adds the IRQ function support of rt5670. We use a flag
named dev_gpio in platform data to inform codec driver if the IRQ
function is used or not. Also, we export rt5670_set_jack_detect
for machine driver to pass the jack point.

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

diff --git a/include/sound/rt5670.h b/include/sound/rt5670.h
index bd31119..b7d6051 100644 (file)
--- a/include/sound/rt5670.h
+++ b/include/sound/rt5670.h
@@ -14,6 +14,7 @@
 struct rt5670_platform_data {
        int jd_mode;
        bool in2_diff;
+       bool dev_gpio;
 
        bool dmic_en;
        unsigned int dmic1_data_pin;

diff --git a/sound/soc/codecs/rt5670.c b/sound/soc/codecs/rt5670.c
index 1a6a9c4..a900db5 100644 (file)
--- a/sound/soc/codecs/rt5670.c
+++ b/sound/soc/codecs/rt5670.c
@@ -403,6 +403,171 @@ static bool rt5670_readable_register(struct device *dev, unsigned int reg)
        }
 }
 
+/**
+ * rt5670_headset_detect - Detect headset.
+ * @codec: SoC audio codec device.
+ * @jack_insert: Jack insert or not.
+ *
+ * Detect whether is headset or not when jack inserted.
+ *
+ * Returns detect status.
+ */
+
+static int rt5670_headset_detect(struct snd_soc_codec *codec, int jack_insert)
+{
+       int val;
+       struct rt5670_priv *rt5670 = snd_soc_codec_get_drvdata(codec);
+
+       if (jack_insert) {
+               snd_soc_dapm_force_enable_pin(&codec->dapm,
+                                                      "Mic Det Power");
+               snd_soc_dapm_sync(&codec->dapm);
+               snd_soc_update_bits(codec, RT5670_GEN_CTRL3, 0x4, 0x0);
+               snd_soc_update_bits(codec, RT5670_CJ_CTRL2,
+                       RT5670_CBJ_DET_MODE | RT5670_CBJ_MN_JD,
+                       RT5670_CBJ_MN_JD);
+               snd_soc_write(codec, RT5670_GPIO_CTRL2, 0x0004);
+               snd_soc_update_bits(codec, RT5670_GPIO_CTRL1,
+                       RT5670_GP1_PIN_MASK, RT5670_GP1_PIN_IRQ);
+               snd_soc_update_bits(codec, RT5670_CJ_CTRL1,
+                       RT5670_CBJ_BST1_EN, RT5670_CBJ_BST1_EN);
+               snd_soc_write(codec, RT5670_JD_CTRL3, 0x00f0);
+               snd_soc_update_bits(codec, RT5670_CJ_CTRL2,
+                       RT5670_CBJ_MN_JD, RT5670_CBJ_MN_JD);
+               snd_soc_update_bits(codec, RT5670_CJ_CTRL2,
+                       RT5670_CBJ_MN_JD, 0);
+               msleep(300);
+               val = snd_soc_read(codec, RT5670_CJ_CTRL3) & 0x7;
+               if (val == 0x1 || val == 0x2) {
+                       rt5670->jack_type = SND_JACK_HEADSET;
+                       /* for push button */
+                       snd_soc_update_bits(codec, RT5670_INT_IRQ_ST, 0x8, 0x8);
+                       snd_soc_update_bits(codec, RT5670_IL_CMD, 0x40, 0x40);
+                       snd_soc_read(codec, RT5670_IL_CMD);
+               } else {
+                       snd_soc_update_bits(codec, RT5670_GEN_CTRL3, 0x4, 0x4);
+                       rt5670->jack_type = SND_JACK_HEADPHONE;
+                       snd_soc_dapm_disable_pin(&codec->dapm, "Mic Det Power");
+                       snd_soc_dapm_sync(&codec->dapm);
+               }
+       } else {
+               snd_soc_update_bits(codec, RT5670_INT_IRQ_ST, 0x8, 0x0);
+               snd_soc_update_bits(codec, RT5670_GEN_CTRL3, 0x4, 0x4);
+               rt5670->jack_type = 0;
+               snd_soc_dapm_disable_pin(&codec->dapm, "Mic Det Power");
+               snd_soc_dapm_sync(&codec->dapm);
+       }
+
+       return rt5670->jack_type;
+}
+
+static int rt5670_button_detect(struct snd_soc_codec *codec)
+{
+       int btn_type, val;
+
+       val = snd_soc_read(codec, RT5670_IL_CMD);
+       btn_type = val & 0xff80;
+       snd_soc_write(codec, RT5670_IL_CMD, val);
+       if (btn_type != 0) {
+               msleep(20);
+               val = snd_soc_read(codec, RT5670_IL_CMD);
+               snd_soc_write(codec, RT5670_IL_CMD, val);
+       }
+
+       return btn_type;
+}
+
+static int rt5670_irq_detection(void *data)
+{
+       struct rt5670_priv *rt5670 = (struct rt5670_priv *)data;
+       struct snd_soc_jack_gpio *gpio = &rt5670->hp_gpio;
+       struct snd_soc_jack *jack = rt5670->jack;
+       int val, btn_type, report = jack->status;
+
+       if (rt5670->pdata.jd_mode == 1) /* 2 port */
+               val = snd_soc_read(rt5670->codec, RT5670_A_JD_CTRL1) & 0x0070;
+       else
+               val = snd_soc_read(rt5670->codec, RT5670_A_JD_CTRL1) & 0x0020;
+
+       switch (val) {
+       /* jack in */
+       case 0x30: /* 2 port */
+       case 0x0: /* 1 port or 2 port */
+               if (rt5670->jack_type == 0) {
+                       report = rt5670_headset_detect(rt5670->codec, 1);
+                       /* for push button and jack out */
+                       gpio->debounce_time = 25;
+                       break;
+               }
+               btn_type = 0;
+               if (snd_soc_read(rt5670->codec, RT5670_INT_IRQ_ST) & 0x4) {
+                       /* button pressed */
+                       report = SND_JACK_HEADSET;
+                       btn_type = rt5670_button_detect(rt5670->codec);
+                       switch (btn_type) {
+                       case 0x2000: /* up */
+                               report |= SND_JACK_BTN_1;
+                               break;
+                       case 0x0400: /* center */
+                               report |= SND_JACK_BTN_0;
+                               break;
+                       case 0x0080: /* down */
+                               report |= SND_JACK_BTN_2;
+                               break;
+                       default:
+                               dev_err(rt5670->codec->dev,
+                                       "Unexpected button code 0x%04x\n",
+                                       btn_type);
+                               break;
+                       }
+               }
+               if (btn_type == 0)/* button release */
+                       report =  rt5670->jack_type;
+
+               break;
+       /* jack out */
+       case 0x70: /* 2 port */
+       case 0x10: /* 2 port */
+       case 0x20: /* 1 port */
+               report = 0;
+               snd_soc_update_bits(rt5670->codec, RT5670_INT_IRQ_ST, 0x1, 0x0);
+               rt5670_headset_detect(rt5670->codec, 0);
+               gpio->debounce_time = 150; /* for jack in */
+               break;
+       default:
+               break;
+       }
+
+       return report;
+}
+
+int rt5670_set_jack_detect(struct snd_soc_codec *codec,
+       struct snd_soc_jack *jack)
+{
+       struct rt5670_priv *rt5670 = snd_soc_codec_get_drvdata(codec);
+       int ret;
+
+       rt5670->jack = jack;
+       rt5670->hp_gpio.gpiod_dev = codec->dev;
+       rt5670->hp_gpio.name = "headphone detect";
+       rt5670->hp_gpio.report = SND_JACK_HEADSET |
+               SND_JACK_BTN_0 | SND_JACK_BTN_1 | SND_JACK_BTN_2;
+       rt5670->hp_gpio.debounce_time = 150;
+       rt5670->hp_gpio.wake = true;
+       rt5670->hp_gpio.data = (struct rt5670_priv *)rt5670;
+       rt5670->hp_gpio.jack_status_check = rt5670_irq_detection;
+
+       ret = snd_soc_jack_add_gpios(rt5670->jack, 1,
+                       &rt5670->hp_gpio);
+       if (ret) {
+               dev_err(codec->dev, "Adding jack GPIO failed\n");
+               return ret;
+       }
+
+       return 0;
+}
+EXPORT_SYMBOL_GPL(rt5670_set_jack_detect);
+
 static const DECLARE_TLV_DB_SCALE(out_vol_tlv, -4650, 150, 0);
 static const DECLARE_TLV_DB_SCALE(dac_vol_tlv, -65625, 375, 0);
 static const DECLARE_TLV_DB_SCALE(in_vol_tlv, -3450, 150, 0);
@@ -2506,6 +2671,7 @@ static int rt5670_remove(struct snd_soc_codec *codec)
        struct rt5670_priv *rt5670 = snd_soc_codec_get_drvdata(codec);
 
        regmap_write(rt5670->regmap, RT5670_RESET, 0);
+       snd_soc_jack_free_gpios(rt5670->jack, 1, &rt5670->hp_gpio);
        return 0;
 }
 
@@ -2665,6 +2831,7 @@ static int rt5670_i2c_probe(struct i2c_client *i2c,
        if (dmi_check_system(dmi_platform_intel_braswell)) {
                rt5670->pdata.dmic_en = true;
                rt5670->pdata.dmic1_data_pin = RT5670_DMIC_DATA_IN2P;
+               rt5670->pdata.dev_gpio = true;
                rt5670->pdata.jd_mode = 1;
        }
 
@@ -2706,12 +2873,17 @@ static int rt5670_i2c_probe(struct i2c_client *i2c,
                regmap_update_bits(rt5670->regmap, RT5670_IN2,
                                        RT5670_IN_DF2, RT5670_IN_DF2);
 
-       if (i2c->irq) {
+       if (rt5670->pdata.dev_gpio) {
+               /* for push button */
+               regmap_write(rt5670->regmap, RT5670_IL_CMD, 0x0000);
+               regmap_write(rt5670->regmap, RT5670_IL_CMD2, 0x0010);
+               regmap_write(rt5670->regmap, RT5670_IL_CMD3, 0x0014);
+               /* for irq */
                regmap_update_bits(rt5670->regmap, RT5670_GPIO_CTRL1,
                                   RT5670_GP1_PIN_MASK, RT5670_GP1_PIN_IRQ);
                regmap_update_bits(rt5670->regmap, RT5670_GPIO_CTRL2,
                                   RT5670_GP1_PF_MASK, RT5670_GP1_PF_OUT);
-
+               regmap_update_bits(rt5670->regmap, RT5670_DIG_MISC, 0x8, 0x8);
        }
 
        if (rt5670->pdata.jd_mode) {

diff --git a/sound/soc/codecs/rt5670.h b/sound/soc/codecs/rt5670.h
index 0a67adb..0f3255a 100644 (file)
--- a/sound/soc/codecs/rt5670.h
+++ b/sound/soc/codecs/rt5670.h
@@ -1988,6 +1988,8 @@ struct rt5670_priv {
        struct snd_soc_codec *codec;
        struct rt5670_platform_data pdata;
        struct regmap *regmap;
+       struct snd_soc_jack *jack;
+       struct snd_soc_jack_gpio hp_gpio;
 
        int sysclk;
        int sysclk_src;
@@ -2004,4 +2006,6 @@ struct rt5670_priv {
        int jack_type;
 };
 
+int rt5670_set_jack_detect(struct snd_soc_codec *codec,
+       struct snd_soc_jack *jack);
 #endif /* __RT5670_H__ */