linux-kernel - [PATCH] SoC: rt5682: Disable jack detection interrupt during suspend

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Date:   Tue, 16 May 2023 16:46:30 +0000
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Oder Chiou <oder_chiou@...ltek.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     Douglas Anderson <dianders@...omium.org>,
        linux-kernel@...r.kernel.org, alsa-devel@...a-project.org,
        Stephen Boyd <swboyd@...omium.org>,
        Matthias Kaehlcke <mka@...omium.org>, stable@...nel.org
Subject: [PATCH] SoC: rt5682: Disable jack detection interrupt during suspend

The rt5682 driver switches its regmap to cache-only when the
device suspends and back to regular mode on resume. When the
jack detect interrupt fires rt5682_irq() schedules the jack
detect work. This can result in invalid reads from the regmap
in cache-only mode if the work runs before the device has
resumed:

[   56.245502] rt5682 9-001a: ASoC: error at soc_component_read_no_lock on rt5682.9-001a for register: [0x000000f0] -16

Disable the jack detection interrupt during suspend and
re-enable it on resume. The driver already schedules the
jack detection work on resume, so any state change during
suspend is still handled.

This is essentially the same as commit f7d00a9be147 ("SoC:
rt5682s: Disable jack detection interrupt during suspend")
for the rt5682s.

Cc: stable@...nel.org
Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
---

 sound/soc/codecs/rt5682-i2c.c | 4 +++-
 sound/soc/codecs/rt5682.c     | 6 ++++++
 sound/soc/codecs/rt5682.h     | 1 +
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/rt5682-i2c.c b/sound/soc/codecs/rt5682-i2c.c
index 2935c1bb81f3..5bc46b041786 100644
--- a/sound/soc/codecs/rt5682-i2c.c
+++ b/sound/soc/codecs/rt5682-i2c.c
@@ -267,7 +267,9 @@ static int rt5682_i2c_probe(struct i2c_client *i2c)
 		ret = devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL,
 			rt5682_irq, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING
 			| IRQF_ONESHOT, "rt5682", rt5682);
-		if (ret)
+		if (!ret)
+			rt5682->irq = i2c->irq;
+		else
 			dev_err(&i2c->dev, "Failed to reguest IRQ: %d\n", ret);
 	}
 
diff --git a/sound/soc/codecs/rt5682.c b/sound/soc/codecs/rt5682.c
index f6c798b65c08..5d992543b791 100644
--- a/sound/soc/codecs/rt5682.c
+++ b/sound/soc/codecs/rt5682.c
@@ -2959,6 +2959,9 @@ static int rt5682_suspend(struct snd_soc_component *component)
 	if (rt5682->is_sdw)
 		return 0;
 
+	if (rt5682->irq)
+		disable_irq(rt5682->irq);
+
 	cancel_delayed_work_sync(&rt5682->jack_detect_work);
 	cancel_delayed_work_sync(&rt5682->jd_check_work);
 	if (rt5682->hs_jack && (rt5682->jack_type & SND_JACK_HEADSET) == SND_JACK_HEADSET) {
@@ -3027,6 +3030,9 @@ static int rt5682_resume(struct snd_soc_component *component)
 	mod_delayed_work(system_power_efficient_wq,
 		&rt5682->jack_detect_work, msecs_to_jiffies(0));
 
+	if (rt5682->irq)
+		enable_irq(rt5682->irq);
+
 	return 0;
 }
 #else
diff --git a/sound/soc/codecs/rt5682.h b/sound/soc/codecs/rt5682.h
index d568c6993c33..e8efd8a84a6c 100644
--- a/sound/soc/codecs/rt5682.h
+++ b/sound/soc/codecs/rt5682.h
@@ -1462,6 +1462,7 @@ struct rt5682_priv {
 	int pll_out[RT5682_PLLS];
 
 	int jack_type;
+	int irq;
 	int irq_work_delay_time;
 };
 
-- 
2.40.1.606.ga4b1b128d6-goog