[alsa-devel] [PATCH v2 3/3] ASoC: rt5670: add codec irq support
Bard Liao
bardliao at realtek.com
Mon Nov 17 08:27:23 CET 2014
This patch provide the jack function of rt5670. We use a irq pin to notice the jack event. rt5670_irq_detection will determine which status should be reported.
We can get gpio information from gpio number or gpiod_dev. That's why we define both on platform data.
Signed-off-by: Bard Liao <bardliao at realtek.com>
---
include/sound/rt5670.h | 2 +
sound/soc/codecs/rt5670.c | 176 +++++++++++++++++++++++++++++++++++++++++++++-
sound/soc/codecs/rt5670.h | 2 +
3 files changed, 178 insertions(+), 2 deletions(-)
diff --git a/include/sound/rt5670.h b/include/sound/rt5670.h
index bd31119..bb5cf6d 100644
--- a/include/sound/rt5670.h
+++ b/include/sound/rt5670.h
@@ -14,6 +14,8 @@
struct rt5670_platform_data {
int jd_mode;
bool in2_diff;
+ int codec_gpio;
+ 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 8a0833d..6f595bc 100644
--- a/sound/soc/codecs/rt5670.c
+++ b/sound/soc/codecs/rt5670.c
@@ -402,6 +402,144 @@ 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;
+}
+
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);
@@ -2415,6 +2553,34 @@ static int rt5670_probe(struct snd_soc_codec *codec)
return -ENODEV;
}
rt5670->codec = codec;
+ if ((rt5670->pdata.codec_gpio != -1) || (rt5670->pdata.dev_gpio)) {
+ if (rt5670->pdata.dev_gpio)
+ rt5670->hp_gpio.gpiod_dev = codec->dev;
+ else
+ rt5670->hp_gpio.gpio = rt5670->pdata.codec_gpio;
+
+ 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_new(codec, rt5670->hp_gpio.name,
+ rt5670->hp_gpio.report,
+ &rt5670->jack);
+ if (ret) {
+ dev_err(codec->dev, "Jack creation failed\n");
+ return ret;
+ }
+
+ 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;
}
@@ -2424,6 +2590,7 @@ 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;
}
@@ -2600,12 +2767,17 @@ 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.codec_gpio != -1) || (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 d11b9c2..54933f3 100644
--- a/sound/soc/codecs/rt5670.h
+++ b/sound/soc/codecs/rt5670.h
@@ -1987,6 +1987,8 @@ 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;
--
1.8.1.1.439.g50a6b54
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