[alsa-devel] [PATCH] ASoC: rt5665: calibration should be done before jack detection

[Bard Liao]

We will set some volatile registers in jack detection function. But
those volatile registers will be clear in rt5665_calibrate function
because we set cache bypass and reset codec in rt5665_calibrate function.
This patch add a flag to make sure that rt5665_calibrate is done
before starting jack detection.

Signed-off-by: Bard Liao <bardliao at realtek.com>
---
 sound/soc/codecs/rt5665.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/sound/soc/codecs/rt5665.c b/sound/soc/codecs/rt5665.c
index 7420010..370ed54d 100644
--- a/sound/soc/codecs/rt5665.c
+++ b/sound/soc/codecs/rt5665.c
@@ -70,6 +70,7 @@ struct rt5665_priv {
 	int jack_type;
 	int irq_work_delay_time;
 	unsigned int sar_adc_value;
+	bool calibration_done;
 };
 
 static const struct reg_default rt5665_reg[] = {
@@ -1305,6 +1306,11 @@ static void rt5665_jack_detect_handler(struct work_struct *work)
 		usleep_range(10000, 15000);
 	}
 
+	while (!rt5665->calibration_done) {
+		pr_debug("%s calibration not ready\n", __func__);
+		usleep_range(10000, 15000);
+	}
+
 	mutex_lock(&rt5665->calibrate_mutex);
 
 	val = snd_soc_read(rt5665->codec, RT5665_AJD1_CTRL) & 0x0010;
@@ -4695,6 +4701,7 @@ static void rt5665_calibrate(struct rt5665_priv *rt5665)
 	regmap_write(rt5665->regmap, RT5665_ASRC_8, 0x0120);
 
 out_unlock:
+	rt5665->calibration_done = true;
 	mutex_unlock(&rt5665->calibrate_mutex);
 }
 
-- 
2.7.4