linux-kernel - [PATCH 16/16] ASoC: cs42l42: Always enable TS_PLUG and TS

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Date:   Fri, 15 Oct 2021 14:36:19 +0100
From:   Richard Fitzgerald <rf@...nsource.cirrus.com>
To:     <broonie@...nel.org>
CC:     <alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>,
        <patches@...nsource.cirrus.com>,
        Richard Fitzgerald <rf@...nsource.cirrus.com>
Subject: [PATCH 16/16] ASoC: cs42l42: Always enable TS_PLUG and TS_UNPLUG interrupts

The headset type detection must run to set the analogue switches
correctly for the attached headset type. Without this only headsets
with wiring matching the chip default will have a functioning mic.

commit c26a5289e865 ("ASoC: cs42l42: Add support for set_jack calls")
moved the interrupt unmasking to the component set_jack() callback.
But it's not mandatory for a machine driver to register a struct
snd_soc_jack handler. Without a registered handler the type detection
would not have run and so the mic would not work on some types of
headset.

This patch restores the unmasking of TS_PLUG and TS_UNPLUG interrupts
during probe.

Signed-off-by: Richard Fitzgerald <rf@...nsource.cirrus.com>
---
 sound/soc/codecs/cs42l42.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c
index 8f0c58097d64..d30bb9ad4191 100644
--- a/sound/soc/codecs/cs42l42.c
+++ b/sound/soc/codecs/cs42l42.c
@@ -524,12 +524,6 @@ static int cs42l42_set_jack(struct snd_soc_component *component, struct snd_soc_
 
 	cs42l42->jack = jk;
 
-	regmap_update_bits(cs42l42->regmap, CS42L42_TSRS_PLUG_INT_MASK,
-			   CS42L42_RS_PLUG_MASK | CS42L42_RS_UNPLUG_MASK |
-			   CS42L42_TS_PLUG_MASK | CS42L42_TS_UNPLUG_MASK,
-			   (1 << CS42L42_RS_PLUG_SHIFT) | (1 << CS42L42_RS_UNPLUG_SHIFT) |
-			   (0 << CS42L42_TS_PLUG_SHIFT) | (0 << CS42L42_TS_UNPLUG_SHIFT));
-
 	return 0;
 }
 
@@ -1798,8 +1792,8 @@ static void cs42l42_set_interrupt_masks(struct cs42l42_private *cs42l42)
 			CS42L42_TS_UNPLUG_MASK,
 			(1 << CS42L42_RS_PLUG_SHIFT) |
 			(1 << CS42L42_RS_UNPLUG_SHIFT) |
-			(1 << CS42L42_TS_PLUG_SHIFT) |
-			(1 << CS42L42_TS_UNPLUG_SHIFT));
+			(0 << CS42L42_TS_PLUG_SHIFT) |
+			(0 << CS42L42_TS_UNPLUG_SHIFT));
 }
 
 static void cs42l42_setup_hs_type_detect(struct cs42l42_private *cs42l42)
-- 
2.11.0