ALSA: hda/hdmi: Use 'AC_PINSENSE_ELDV' to detect pinsense for Loongson

commit 958e445 upstream.

Due to a hardware defect, for Loongson PCI HDMI devices with a reversion
ID of 2, the pin sense status must be determined via the ELD.

Add a codec flag, eld_jack_detect, to indicate this case, and do special
handlings in read_pin_sense().

Cc: stable@vger.kernel.org
Signed-off-by: Baoqi Zhang <zhangbaoqi@loongson.cn>
Signed-off-by: Haowei Zheng <zhenghaowei@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Link: https://patch.msgid.link/20260527140841.3407183-1-chenhuacai@loongson.cn
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: chenhuacai

include/sound/hda_codec.h

@@ -259,6 +259,7 @@ struct hda_codec {
 	unsigned int forced_resume:1; /* forced resume for jack */
 	unsigned int no_stream_clean_at_suspend:1; /* do not clean streams at suspend */
 	unsigned int ctl_dev_id:1; /* old control element id build behaviour */
+	unsigned int eld_jack_detect:1;	/* Machine jack-detection by ELD */
 
 	unsigned long power_on_acct;
 	unsigned long power_off_acct;

sound/hda/codecs/hdmi/hdmi.c

@@ -2286,6 +2286,7 @@ EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_acomp_init, "SND_HDA_CODEC_HDMI");
 enum {
 	MODEL_GENERIC,
 	MODEL_GF,
+	MODEL_LOONGSON,
 };
 
 static int generichdmi_probe(struct hda_codec *codec,
@@ -2303,6 +2304,11 @@ static int generichdmi_probe(struct hda_codec *codec,
 	if (id->driver_data == MODEL_GF)
 		codec->no_sticky_stream = 1;
 
+	if (id->driver_data == MODEL_LOONGSON) {
+		if (codec->bus && codec->bus->pci->revision == 0x2)
+			codec->eld_jack_detect = 1; /* Jack-detection by ELD */
+	}
+
 	return 0;
 }
 
@@ -2320,7 +2326,7 @@ static const struct hda_codec_ops generichdmi_codec_ops = {
 /*
  */
 static const struct hda_device_id snd_hda_id_generichdmi[] = {
-	HDA_CODEC_ID_MODEL(0x00147a47, "Loongson HDMI",		MODEL_GENERIC),
+	HDA_CODEC_ID_MODEL(0x00147a47, "Loongson HDMI",		MODEL_LOONGSON),
 	HDA_CODEC_ID_MODEL(0x10951390, "SiI1390 HDMI",		MODEL_GENERIC),
 	HDA_CODEC_ID_MODEL(0x10951392, "SiI1392 HDMI",		MODEL_GENERIC),
 	HDA_CODEC_ID_MODEL(0x11069f84, "VX11 HDMI/DP",		MODEL_GENERIC),

sound/hda/common/jack.c

@@ -58,6 +58,12 @@ static u32 read_pin_sense(struct hda_codec *codec, hda_nid_t nid, int dev_id)
 				  AC_VERB_GET_PIN_SENSE, dev_id);
 	if (codec->inv_jack_detect)
 		val ^= AC_PINSENSE_PRESENCE;
+	if (codec->eld_jack_detect) {
+		if (val & AC_PINSENSE_ELDV)
+			val |= AC_PINSENSE_PRESENCE;
+		else
+			val &= ~AC_PINSENSE_PRESENCE;
+	}
 	return val;
 }