linux-kernel - [PATCH v2 2/4] ALSA: hda/tas2781: add configurable global i2c address

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Message-ID: <a252f1efeed5049f027f01e699c9e10e1e05bf9e.1703891777.git.soyer@irl.hu>
Date: Sat, 30 Dec 2023 01:09:43 +0100
From: Gergo Koteles <soyer@....hu>
To: Shenghao Ding <shenghao-ding@...com>, Kevin Lu <kevin-lu@...com>,
  Baojun Xu <baojun.xu@...com>, Jaroslav Kysela <perex@...ex.cz>,
  Takashi Iwai <tiwai@...e.com>, Liam Girdwood <lgirdwood@...il.com>,
  Mark Brown <broonie@...nel.org>
Cc: linux-sound@...r.kernel.org, linux-kernel@...r.kernel.org,
  alsa-devel@...a-project.org, Gergo Koteles <soyer@....hu>
Subject: [PATCH v2 2/4] ALSA: hda/tas2781: add configurable global i2c address

Make the global i2c address configurable to support compatible amplifiers
with different global i2c address.

Signed-off-by: Gergo Koteles <soyer@....hu>
---
 include/sound/tas2781.h         | 2 ++
 sound/pci/hda/tas2781_hda_i2c.c | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/sound/tas2781.h b/include/sound/tas2781.h
index e17ceab4fead..dde9f8120d4c 100644
--- a/include/sound/tas2781.h
+++ b/include/sound/tas2781.h
@@ -121,6 +121,8 @@ struct tasdevice_priv {
 	bool force_fwload_status;
 	bool playback_started;
 	bool isacpi;
+	unsigned int global_addr;
+
 	int (*fw_parse_variable_header)(struct tasdevice_priv *tas_priv,
 		const struct firmware *fmw, int offset);
 	int (*fw_parse_program_data)(struct tasdevice_priv *tas_priv,
diff --git a/sound/pci/hda/tas2781_hda_i2c.c b/sound/pci/hda/tas2781_hda_i2c.c
index 0f8d5f947f54..49477d17b07c 100644
--- a/sound/pci/hda/tas2781_hda_i2c.c
+++ b/sound/pci/hda/tas2781_hda_i2c.c
@@ -81,7 +81,7 @@ static int tas2781_get_i2c_res(struct acpi_resource *ares, void *data)
 
 	if (i2c_acpi_get_i2c_resource(ares, &sb)) {
 		if (tas_priv->ndev < TASDEVICE_MAX_CHANNELS &&
-			sb->slave_address != TAS2781_GLOBAL_ADDR) {
+			sb->slave_address != tas_priv->global_addr) {
 			tas_priv->tasdevice[tas_priv->ndev].dev_addr =
 				(unsigned int)sb->slave_address;
 			tas_priv->ndev++;
@@ -699,6 +699,7 @@ static int tas2781_hda_i2c_probe(struct i2c_client *clt)
 		device_name = "TIAS2781";
 		tas_hda->priv->save_calibration = tas2781_save_calibration;
 		tas_hda->priv->apply_calibration = tas2781_apply_calib;
+		tas_hda->priv->global_addr = TAS2781_GLOBAL_ADDR;
 	} else
 		return -ENODEV;
 
-- 
2.43.0