ALSA: hda/tas2781: fix speaker id retrieval for multiple probes

commit 945865a upstream.

Currently, on ASUS projects, the TAS2781 codec attaches the speaker GPIO
to the first tasdevice_priv instance using devm. This causes
tas2781_read_acpi to fail on subsequent probes since the GPIO is already
managed by the first device. This causes a failure on Xbox Ally X,
because it has two amplifiers, and prevents us from quirking both the
Xbox Ally and Xbox Ally X in the realtek codec driver.

It is unnecessary to attach the GPIO to a device as it is static.
Therefore, instead of attaching it and then reading it when loading the
firmware, read its value directly in tas2781_read_acpi and store it in
the private data structure. Then, make reading the value non-fatal so
that ASUS projects that miss a speaker pin can still work, perhaps using
fallback firmware.

Fixes: 4e7035a ("ALSA: hda/tas2781: Add speaker id check for ASUS projects")
Cc: stable@vger.kernel.org # 6.17
Signed-off-by: Antheas Kapenekakis <lkml@antheas.dev>
Reviewed-by: Baojun Xu <baojun.xu@ti.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20251026191635.2447593-1-lkml@antheas.dev
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: antheas

include/sound/tas2781.h

@@ -197,7 +197,6 @@ struct tasdevice_priv {
 	struct acoustic_data acou_data;
 #endif
 	struct tasdevice_fw *fmw;
-	struct gpio_desc *speaker_id;
 	struct gpio_desc *reset;
 	struct mutex codec_lock;
 	struct regmap *regmap;
@@ -215,6 +214,7 @@ struct tasdevice_priv {
 	unsigned int magic_num;
 	unsigned int chip_id;
 	unsigned int sysclk;
+	int speaker_id;
 
 	int irq;
 	int cur_prog;

sound/hda/codecs/side-codecs/tas2781_hda_i2c.c

@@ -87,6 +87,7 @@ static const struct acpi_gpio_mapping tas2781_speaker_id_gpios[] = {
 
 static int tas2781_read_acpi(struct tasdevice_priv *p, const char *hid)
 {
+	struct gpio_desc *speaker_id;
 	struct acpi_device *adev;
 	struct device *physdev;
 	LIST_HEAD(resources);
@@ -119,19 +120,31 @@ static int tas2781_read_acpi(struct tasdevice_priv *p, const char *hid)
 	/* Speaker id was needed for ASUS projects. */
 	ret = kstrtou32(sub, 16, &subid);
 	if (!ret && upper_16_bits(subid) == PCI_VENDOR_ID_ASUSTEK) {
-		ret = devm_acpi_dev_add_driver_gpios(p->dev,
-			tas2781_speaker_id_gpios);
-		if (ret < 0)
+		ret = acpi_dev_add_driver_gpios(adev, tas2781_speaker_id_gpios);
+		if (ret < 0) {
 			dev_err(p->dev, "Failed to add driver gpio %d.\n",
 				ret);
-		p->speaker_id = devm_gpiod_get(p->dev, "speakerid", GPIOD_IN);
-		if (IS_ERR(p->speaker_id)) {
-			dev_err(p->dev, "Failed to get Speaker id.\n");
-			ret = PTR_ERR(p->speaker_id);
-			goto err;
+			p->speaker_id = -1;
+			goto end_2563;
+		}
+
+		speaker_id = fwnode_gpiod_get_index(acpi_fwnode_handle(adev),
+			"speakerid", 0, GPIOD_IN, NULL);
+		if (!IS_ERR(speaker_id)) {
+			p->speaker_id = gpiod_get_value_cansleep(speaker_id);
+			dev_dbg(p->dev, "Got speaker id gpio from ACPI: %d.\n",
+				p->speaker_id);
+			gpiod_put(speaker_id);
+		} else {
+			p->speaker_id = -1;
+			ret = PTR_ERR(speaker_id);
+			dev_err(p->dev, "Get speaker id gpio failed %d.\n",
+				ret);
 		}
+
+		acpi_dev_remove_driver_gpios(adev);
 	} else {
-		p->speaker_id = NULL;
+		p->speaker_id = -1;
 	}
 
 end_2563:
@@ -432,23 +445,16 @@ static void tasdevice_dspfw_init(void *context)
 	struct tas2781_hda *tas_hda = dev_get_drvdata(tas_priv->dev);
 	struct tas2781_hda_i2c_priv *hda_priv = tas_hda->hda_priv;
 	struct hda_codec *codec = tas_priv->codec;
-	int ret, spk_id;
+	int ret;
 
 	tasdevice_dsp_remove(tas_priv);
 	tas_priv->fw_state = TASDEVICE_DSP_FW_PENDING;
-	if (tas_priv->speaker_id != NULL) {
-		// Speaker id need to be checked for ASUS only.
-		spk_id = gpiod_get_value(tas_priv->speaker_id);
-		if (spk_id < 0) {
-			// Speaker id is not valid, use default.
-			dev_dbg(tas_priv->dev, "Wrong spk_id = %d\n", spk_id);
-			spk_id = 0;
-		}
+	if (tas_priv->speaker_id >= 0) {
 		snprintf(tas_priv->coef_binaryname,
 			  sizeof(tas_priv->coef_binaryname),
 			  "TAS2XXX%04X%d.bin",
 			  lower_16_bits(codec->core.subsystem_id),
-			  spk_id);
+			  tas_priv->speaker_id);
 	} else {
 		snprintf(tas_priv->coef_binaryname,
 			  sizeof(tas_priv->coef_binaryname),