linux-kernel - [PATCH 3/3] Fix headset auto detect fail in cx8070 and SN6140

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Date: Wed, 27 Dec 2023 15:10:08 +0800
From: bo liu <bo.liu@...arytech.com>
To: perex@...ex.cz,
	tiwai@...e.com
Cc: linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	bo liu <bo.liu@...arytech.com>
Subject: [PATCH 3/3] Fix headset auto detect fail in cx8070 and SN6140

CX8070 and SN6140 will get wrong headset type when use OMTP headset,
then the headset mic will not work.

Signed-off-by: bo liu <bo.liu@...arytech.com>
---
 sound/pci/hda/patch_conexant.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
index 9ebc0709a202..86e7241b4961 100644
--- a/sound/pci/hda/patch_conexant.c
+++ b/sound/pci/hda/patch_conexant.c
@@ -184,7 +184,7 @@ static int cx_auto_init(struct hda_codec *codec)
 		snd_hda_codec_write(codec, 0x1c, 0, 0x4f0, 0x0eb);
 		/* fix reboot headset recognize fail issue */
 		mic_persent = snd_hda_codec_read(codec, 0x19, 0, 0xf09, 0x0);
-		if (mic_persent&0x80000000) 
+		if (mic_persent&0x80000000)
 			snd_hda_codec_write(codec, 0x19, 0, 0x707, 0x24);
 		else
 			snd_hda_codec_write(codec, 0x19, 0, 0x707, 0x20);
@@ -212,7 +212,7 @@ static void cx_auto_free(struct hda_codec *codec)
 static int headset_present_flag;
 static void cx_jack_unsol_event(struct hda_codec *codec, unsigned int res)
 {
-	unsigned int val, phone_present, mic_persent,phone_tag, mic_tag;
+	unsigned int val, phone_present, mic_persent, phone_tag, mic_tag;
 	unsigned int count=0;
 
 	switch (codec->core.vendor_id) {
@@ -236,13 +236,11 @@ static void cx_jack_unsol_event(struct hda_codec *codec, unsigned int res)
 				if ((phone_present&0x80000000) && (mic_persent&0x80000000)) {
 					/* wait headset detect done */
 					do {
+						msleep(20);
 						val = snd_hda_codec_read(codec, 0x1c,
 									0, 0xca0, 0x0);
-						if (val&0x080)
-							break;
-						msleep(20);
 						count += 1;
-					} while (count > 3);
+					} while ((count > 3) || (val&0x080));
 					val = snd_hda_codec_read(codec, 0x1c, 0, 0xcb0, 0x0);
 					if (val&0x800) {
 						codec_dbg(codec, "headset plugin, type is CTIA\n");
-- 
2.34.1