[alsa-devel] [PATCH 1/2] ASoC: rt5651: Enable jack detection on JD1_1
Bard Liao
bardliao at realtek.com
Fri Oct 20 04:23:42 CEST 2017
> -----Original Message-----
> From: Carlo Caione [mailto:carlo.caione at gmail.com] On Behalf Of Carlo
> Caione
> Sent: Thursday, October 19, 2017 7:03 PM
> To: linux at endlessm.com; Bard Liao; Oder Chiou;
> pierre-louis.bossart at linux.intel.com; broonie at kernel.org;
> alsa-devel at alsa-project.org; linux-kernel at vger.kernel.org; tiwai at suse.com;
> Albert Chen; Edgar Shen
> Cc: Carlo Caione
> Subject: [PATCH 1/2] ASoC: rt5651: Enable jack detection on JD1_1
>
> From: Carlo Caione <carlo at endlessm.com>
>
> Enable jack detection or the RT5651 codec on the JD1_1 pin.
> The codec has no means to detect the type of the jack connected so we
> assume that the jack is always an headset jack.
>
> Signed-off-by: Carlo Caione <carlo at endlessm.com>
> ---
> include/sound/rt5651.h | 7 ++++
> sound/soc/codecs/rt5651.c | 91
> +++++++++++++++++++++++++++++++++++++++++++++--
> sound/soc/codecs/rt5651.h | 3 ++
> 3 files changed, 99 insertions(+), 2 deletions(-)
>
> diff --git a/include/sound/rt5651.h b/include/sound/rt5651.h
> index d35de758dfb5..c563383149c4 100644
> --- a/include/sound/rt5651.h
> +++ b/include/sound/rt5651.h
> @@ -11,11 +11,18 @@
> #ifndef __LINUX_SND_RT5651_H
> #define __LINUX_SND_RT5651_H
>
> +enum rt5651_jd_src {
> + RT5651_JD_NULL,
> + RT5651_JD1_1,
> +};
> +
> struct rt5651_platform_data {
> /* IN2 can optionally be differential */
> bool in2_diff;
>
> bool dmic_en;
> +
> + enum rt5651_jd_src jd_src;
> };
>
> #endif
> diff --git a/sound/soc/codecs/rt5651.c b/sound/soc/codecs/rt5651.c
> index 28f7210cec91..9bc7f31af1a4 100644
> --- a/sound/soc/codecs/rt5651.c
> +++ b/sound/soc/codecs/rt5651.c
> @@ -26,6 +26,7 @@
> #include <sound/soc-dapm.h>
> #include <sound/initval.h>
> #include <sound/tlv.h>
> +#include <sound/jack.h>
>
> #include "rl6231.h"
> #include "rt5651.h"
> @@ -880,6 +881,9 @@ static const struct snd_soc_dapm_widget
> rt5651_dapm_widgets[] = {
> SND_SOC_DAPM_SUPPLY("PLL1", RT5651_PWR_ANLG2,
> RT5651_PWR_PLL_BIT, 0, NULL, 0),
> /* Input Side */
> + SND_SOC_DAPM_SUPPLY("JD Power", RT5651_PWR_ANLG2,
> + RT5651_PWM_JD_M_BIT, 0, NULL, 0),
> +
> /* micbias */
> SND_SOC_DAPM_SUPPLY("LDO", RT5651_PWR_ANLG1,
> RT5651_PWR_LDO_BIT, 0, NULL, 0),
> @@ -1528,6 +1532,8 @@ static int rt5651_set_dai_pll(struct snd_soc_dai *dai,
> int pll_id, int source,
> static int rt5651_set_bias_level(struct snd_soc_codec *codec,
> enum snd_soc_bias_level level)
> {
> + struct rt5651_priv *rt5651 = snd_soc_codec_get_drvdata(codec);
> +
> switch (level) {
> case SND_SOC_BIAS_PREPARE:
> if (SND_SOC_BIAS_STANDBY ==
> snd_soc_codec_get_bias_level(codec)) {
> @@ -1556,8 +1562,13 @@ static int rt5651_set_bias_level(struct
> snd_soc_codec *codec,
> snd_soc_write(codec, RT5651_PWR_DIG2, 0x0000);
> snd_soc_write(codec, RT5651_PWR_VOL, 0x0000);
> snd_soc_write(codec, RT5651_PWR_MIXER, 0x0000);
> - snd_soc_write(codec, RT5651_PWR_ANLG1, 0x0000);
> - snd_soc_write(codec, RT5651_PWR_ANLG2, 0x0000);
> + if (rt5651->pdata.jd_src) {
> + snd_soc_write(codec, RT5651_PWR_ANLG2, 0x0204);
> + snd_soc_write(codec, RT5651_PWR_ANLG1, 0x0002);
> + } else {
> + snd_soc_write(codec, RT5651_PWR_ANLG1, 0x0000);
> + snd_soc_write(codec, RT5651_PWR_ANLG2, 0x0000);
> + }
> break;
>
> default:
> @@ -1570,6 +1581,7 @@ static int rt5651_set_bias_level(struct
> snd_soc_codec *codec,
> static int rt5651_probe(struct snd_soc_codec *codec)
> {
> struct rt5651_priv *rt5651 = snd_soc_codec_get_drvdata(codec);
> + struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
>
> rt5651->codec = codec;
>
> @@ -1585,6 +1597,13 @@ static int rt5651_probe(struct snd_soc_codec
> *codec)
>
> snd_soc_codec_force_bias_level(codec, SND_SOC_BIAS_OFF);
>
> + if (rt5651->pdata.jd_src) {
> + snd_soc_dapm_force_enable_pin(dapm, "JD Power");
> + snd_soc_dapm_force_enable_pin(dapm, "PLL1");
"PLL1" is not needed here. What we need is
+ regmap_update_bits(rt5651->regmap, RT5651_MICBIAS,
+ 0x38, 0x38);
It is not showing in the datasheet. Sorry about that.
> + snd_soc_dapm_force_enable_pin(dapm, "LDO");
> + snd_soc_dapm_sync(dapm);
> + }
> +
> return 0;
> }
>
> @@ -1728,6 +1747,42 @@ static int rt5651_parse_dt(struct rt5651_priv
> *rt5651, struct device_node *np)
> return 0;
> }
>
> +static irqreturn_t rt5651_irq(int irq, void *data)
> +{
> + struct rt5651_priv *rt5651 = data;
> + int val, report = 0;
> +
> + if (!rt5651->codec)
> + return IRQ_HANDLED;
> +
> + switch (rt5651->pdata.jd_src) {
> + case RT5651_JD1_1:
> + val = snd_soc_read(rt5651->codec, RT5651_INT_IRQ_ST) & 0x1000;
> + break;
> + default:
> + return IRQ_HANDLED;
> + }
> +
> + if (!val)
> + report = SND_JACK_HEADSET;
> +
> + snd_soc_jack_report(rt5651->hp_jack, report, SND_JACK_HEADSET);
> +
> + return IRQ_HANDLED;
> +}
> +
> +int rt5651_set_jack_detect(struct snd_soc_codec *codec,
> + struct snd_soc_jack *hp_jack)
> +{
> + struct rt5651_priv *rt5651 = snd_soc_codec_get_drvdata(codec);
> +
> + rt5651->hp_jack = hp_jack;
> + rt5651_irq(0, rt5651);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(rt5651_set_jack_detect);
> +
> static int rt5651_i2c_probe(struct i2c_client *i2c,
> const struct i2c_device_id *id)
> {
> @@ -1779,6 +1834,38 @@ static int rt5651_i2c_probe(struct i2c_client *i2c,
>
> rt5651->hp_mute = 1;
>
> + switch (rt5651->pdata.jd_src) {
> + case RT5651_JD1_1:
> + /* IRQ output on GPIO1 */
> + regmap_update_bits(rt5651->regmap, RT5651_GPIO_CTRL1,
> + RT5651_GP1_PIN_MASK, RT5651_GP1_PIN_IRQ);
> +
> + regmap_update_bits(rt5651->regmap, RT5651_JD_CTRL2,
> + RT5651_JD_TRG_SEL_MASK,
> + RT5651_JD_TRG_SEL_JD1_1);
> + regmap_update_bits(rt5651->regmap, RT5651_IRQ_CTRL1,
> + RT5651_JD1_1_IRQ_EN,
> + RT5651_JD1_1_IRQ_EN);
> + break;
> + case RT5651_JD_NULL:
> + break;
> + default:
> + dev_warn(&i2c->dev, "Currently only JD1_1 is supported\n");
> + break;
> + }
> +
> + if (i2c->irq) {
> + ret = devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL,
> + rt5651_irq,
> + IRQF_TRIGGER_RISING |
> + IRQF_TRIGGER_FALLING |
> + IRQF_ONESHOT, "rt5651", rt5651);
> + if (ret) {
> + dev_err(&i2c->dev, "Failed to reguest IRQ: %d\n", ret);
> + return ret;
> + }
> + }
> +
> ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_rt5651,
> rt5651_dai, ARRAY_SIZE(rt5651_dai));
>
> diff --git a/sound/soc/codecs/rt5651.h b/sound/soc/codecs/rt5651.h
> index 1bd33cfa6411..3c135f1869d4 100644
> --- a/sound/soc/codecs/rt5651.h
> +++ b/sound/soc/codecs/rt5651.h
> @@ -2062,6 +2062,7 @@ struct rt5651_priv {
> struct snd_soc_codec *codec;
> struct rt5651_platform_data pdata;
> struct regmap *regmap;
> + struct snd_soc_jack *hp_jack;
>
> int sysclk;
> int sysclk_src;
> @@ -2077,4 +2078,6 @@ struct rt5651_priv {
> bool hp_mute;
> };
>
> +int rt5651_set_jack_detect(struct snd_soc_codec *codec,
> + struct snd_soc_jack *hp_jack);
> #endif /* __RT5651_H__ */
> --
> 2.14.2
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