[PATCH] ASoC: rt5650: add mutex to avoid the jack detection failure

[<shumingf@xxxxxxxxxxx>]

From: Shuming Fan <shumingf@xxxxxxxxxxx>

This patch adds the jd_mutex to protect the jack detection control flow.
And only the headset type could check the button status.

Signed-off-by: Shuming Fan <shumingf@xxxxxxxxxxx>
---
 sound/soc/codecs/rt5645.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
index 7938b52d741d..a0d01d71d8b5 100644
--- a/sound/soc/codecs/rt5645.c
+++ b/sound/soc/codecs/rt5645.c
@@ -448,6 +448,7 @@ struct rt5645_priv {
 	struct regulator_bulk_data supplies[ARRAY_SIZE(rt5645_supply_names)];
 	struct rt5645_eq_param_s *eq_param;
 	struct timer_list btn_check_timer;
+	struct mutex jd_mutex;
 
 	int codec_type;
 	int sysclk;
@@ -3193,6 +3194,8 @@ static int rt5645_jack_detect(struct snd_soc_component *component, int jack_inse
 				rt5645_enable_push_button_irq(component, true);
 			}
 		} else {
+			if (rt5645->en_button_func)
+				rt5645_enable_push_button_irq(component, false);
 			snd_soc_dapm_disable_pin(dapm, "Mic Det Power");
 			snd_soc_dapm_sync(dapm);
 			rt5645->jack_type = SND_JACK_HEADPHONE;
@@ -3295,6 +3298,8 @@ static void rt5645_jack_detect_work(struct work_struct *work)
 	if (!rt5645->component)
 		return;
 
+	mutex_lock(&rt5645->jd_mutex);
+
 	switch (rt5645->pdata.jd_mode) {
 	case 0: /* Not using rt5645 JD */
 		if (rt5645->gpiod_hp_det) {
@@ -3321,7 +3326,7 @@ static void rt5645_jack_detect_work(struct work_struct *work)
 
 	if (!val && (rt5645->jack_type == 0)) { /* jack in */
 		report = rt5645_jack_detect(rt5645->component, 1);
-	} else if (!val && rt5645->jack_type != 0) {
+	} else if (!val && rt5645->jack_type == SND_JACK_HEADSET) {
 		/* for push button and jack out */
 		btn_type = 0;
 		if (snd_soc_component_read(rt5645->component, RT5645_INT_IRQ_ST) & 0x4) {
@@ -3377,6 +3382,8 @@ static void rt5645_jack_detect_work(struct work_struct *work)
 		rt5645_jack_detect(rt5645->component, 0);
 	}
 
+	mutex_unlock(&rt5645->jd_mutex);
+
 	snd_soc_jack_report(rt5645->hp_jack, report, SND_JACK_HEADPHONE);
 	snd_soc_jack_report(rt5645->mic_jack, report, SND_JACK_MICROPHONE);
 	if (rt5645->en_button_func)
@@ -4150,6 +4157,7 @@ static int rt5645_i2c_probe(struct i2c_client *i2c)
 	}
 	timer_setup(&rt5645->btn_check_timer, rt5645_btn_check_callback, 0);
 
+	mutex_init(&rt5645->jd_mutex);
 	INIT_DELAYED_WORK(&rt5645->jack_detect_work, rt5645_jack_detect_work);
 	INIT_DELAYED_WORK(&rt5645->rcclock_work, rt5645_rcclock_work);
 
-- 
2.34.1