From: Bard Liao bardliao@realtek.com

To make the interrupt safe if it happens to be called before the card is ready, we use regmap read/write in the interrupt handler. Also, we try to prevent the interrupt happen before the card is ready by enabling codec's IRQ in the ASoC probe.

Signed-off-by: Bard Liao bardliao@realtek.com --- sound/soc/codecs/rt286.c | 74 +++++++++++++++++++++++------------------------- 1 file changed, 36 insertions(+), 38 deletions(-)

diff --git a/sound/soc/codecs/rt286.c b/sound/soc/codecs/rt286.c index 218f86e..e4f6102 100644 --- a/sound/soc/codecs/rt286.c +++ b/sound/soc/codecs/rt286.c @@ -36,7 +36,6 @@

struct rt286_priv { struct regmap *regmap; - struct snd_soc_codec *codec; struct rt286_platform_data pdata; struct i2c_client *i2c; struct snd_soc_jack *jack; @@ -295,9 +294,8 @@ static int rt286_support_power_controls[] = { }; #define RT286_POWER_REG_LEN ARRAY_SIZE(rt286_support_power_controls)

-static int rt286_jack_detect(struct snd_soc_codec *codec, bool *hp, bool *mic) +static int rt286_jack_detect(struct rt286_priv *rt286, bool *hp, bool *mic) { - struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec); unsigned int val, buf; int i;

@@ -305,23 +303,23 @@ static int rt286_jack_detect(struct snd_soc_codec *codec, bool *hp, bool *mic) *mic = false;

if (rt286->pdata.cbj_en) { - buf = snd_soc_read(codec, RT286_GET_HP_SENSE); + regmap_read(rt286->regmap, RT286_GET_HP_SENSE, &buf); *hp = buf & 0x80000000; if (*hp) { /* power on HV,VERF */ - snd_soc_update_bits(codec, + regmap_update_bits(rt286->regmap, RT286_POWER_CTRL1, 0x1001, 0x0); /* power LDO1 */ - snd_soc_update_bits(codec, + regmap_update_bits(rt286->regmap, RT286_POWER_CTRL2, 0x4, 0x4); - snd_soc_write(codec, RT286_SET_MIC1, 0x24); - val = snd_soc_read(codec, RT286_CBJ_CTRL2); + regmap_write(rt286->regmap, RT286_SET_MIC1, 0x24); + regmap_read(rt286->regmap, RT286_CBJ_CTRL2, &val);

msleep(200); i = 40; while (((val & 0x0800) == 0) && (i > 0)) { - val = snd_soc_read(codec, - RT286_CBJ_CTRL2); + regmap_read(rt286->regmap, + RT286_CBJ_CTRL2, &val); i--; msleep(20); } @@ -329,53 +327,53 @@ static int rt286_jack_detect(struct snd_soc_codec *codec, bool *hp, bool *mic) if (0x0400 == (val & 0x0700)) { *mic = false;

- snd_soc_write(codec, + regmap_write(rt286->regmap, RT286_SET_MIC1, 0x20); /* power off HV,VERF */ - snd_soc_update_bits(codec, + regmap_update_bits(rt286->regmap, RT286_POWER_CTRL1, 0x1001, 0x1001); - snd_soc_update_bits(codec, + regmap_update_bits(rt286->regmap, RT286_A_BIAS_CTRL3, 0xc000, 0x0000); - snd_soc_update_bits(codec, + regmap_update_bits(rt286->regmap, RT286_CBJ_CTRL1, 0x0030, 0x0000); - snd_soc_update_bits(codec, + regmap_update_bits(rt286->regmap, RT286_A_BIAS_CTRL2, 0xc000, 0x0000); } else if ((0x0200 == (val & 0x0700)) || (0x0100 == (val & 0x0700))) { *mic = true; - snd_soc_update_bits(codec, + regmap_update_bits(rt286->regmap, RT286_A_BIAS_CTRL3, 0xc000, 0x8000); - snd_soc_update_bits(codec, + regmap_update_bits(rt286->regmap, RT286_CBJ_CTRL1, 0x0030, 0x0020); - snd_soc_update_bits(codec, + regmap_update_bits(rt286->regmap, RT286_A_BIAS_CTRL2, 0xc000, 0x8000); } else { *mic = false; }

- snd_soc_update_bits(codec, + regmap_update_bits(rt286->regmap, RT286_MISC_CTRL1, 0x0060, 0x0000); } else { - snd_soc_update_bits(codec, + regmap_update_bits(rt286->regmap, RT286_MISC_CTRL1, 0x0060, 0x0020); - snd_soc_update_bits(codec, + regmap_update_bits(rt286->regmap, RT286_A_BIAS_CTRL3, 0xc000, 0x8000); - snd_soc_update_bits(codec, + regmap_update_bits(rt286->regmap, RT286_CBJ_CTRL1, 0x0030, 0x0020); - snd_soc_update_bits(codec, + regmap_update_bits(rt286->regmap, RT286_A_BIAS_CTRL2, 0xc000, 0x8000);

*mic = false; } } else { - buf = snd_soc_read(codec, RT286_GET_HP_SENSE); + regmap_read(rt286->regmap, RT286_GET_HP_SENSE, &buf); *hp = buf & 0x80000000; - buf = snd_soc_read(codec, RT286_GET_MIC1_SENSE); + regmap_read(rt286->regmap, RT286_GET_MIC1_SENSE, &buf); *mic = buf & 0x80000000; }

@@ -390,7 +388,7 @@ static void rt286_jack_detect_work(struct work_struct *work) bool hp = false; bool mic = false;

- rt286_jack_detect(rt286->codec, &hp, &mic); + rt286_jack_detect(rt286, &hp, &mic);

if (hp == true) status |= SND_JACK_HEADPHONE; @@ -940,11 +938,10 @@ static irqreturn_t rt286_irq(int irq, void *data) bool mic = false; int status = 0;

- rt286_jack_detect(rt286->codec, &hp, &mic); + rt286_jack_detect(rt286, &hp, &mic);

/* Clear IRQ */ - snd_soc_update_bits(rt286->codec, - RT286_IRQ_CTRL, 0x1, 0x1); + regmap_update_bits(rt286->regmap, RT286_IRQ_CTRL, 0x1, 0x1);

if (hp == true) status |= SND_JACK_HEADPHONE; @@ -965,7 +962,16 @@ static int rt286_probe(struct snd_soc_codec *codec) struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);

codec->dapm.bias_level = SND_SOC_BIAS_OFF; - rt286->codec = codec; + + if (rt286->i2c->irq) { + regmap_update_bits(rt286->regmap, + RT286_IRQ_CTRL, 0x2, 0x2); + + INIT_DELAYED_WORK(&rt286->jack_detect_work, + rt286_jack_detect_work); + schedule_delayed_work(&rt286->jack_detect_work, + msecs_to_jiffies(1250)); + }

return 0; } @@ -1171,14 +1177,6 @@ static int rt286_i2c_probe(struct i2c_client *i2c, regmap_update_bits(rt286->regmap, RT286_DEPOP_CTRL4, 0x00ff, 0x003f);

if (rt286->i2c->irq) { - regmap_update_bits(rt286->regmap, - RT286_IRQ_CTRL, 0x2, 0x2); - - INIT_DELAYED_WORK(&rt286->jack_detect_work, - rt286_jack_detect_work); - schedule_delayed_work(&rt286->jack_detect_work, - msecs_to_jiffies(1250)); - ret = request_threaded_irq(rt286->i2c->irq, NULL, rt286_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "rt286", rt286); if (ret != 0) {