linux-kernel - [PATCH 1/3] ALSA: hda/tas2781: remove digital gain kcontrol

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Message-ID: <313e00499eb2caadd23a92284fdec418b650b7f4.1711401621.git.soyer@irl.hu>
Date: Mon, 25 Mar 2024 22:25:33 +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>
Cc: alsa-devel@...a-project.org, linux-sound@...r.kernel.org,
  linux-kernel@...r.kernel.org, Gergo Koteles <soyer@....hu>,
  stable@...r.kernel.org
Subject: [PATCH 1/3] ALSA: hda/tas2781: remove digital gain kcontrol

The "Speaker Digital Gain" kcontrol controls the TAS2781_DVC_LVL (0x1A)
register. Unfortunately the tas2563 does not have DVC_LVL, but has
INT_MASK0 in 0x1A, which has been misused so far.

Since commit c1947ce61ff4 ("ALSA: hda/realtek: tas2781: enable subwoofer
volume control") the volume of the tas2781 amplifiers can be controlled
by the master volume, so this digital gain kcontrol is not needed.

Remove it.

Fixes: 5be27f1e3ec9 ("ALSA: hda/tas2781: Add tas2781 HDA driver")
CC: stable@...r.kernel.org
Signed-off-by: Gergo Koteles <soyer@....hu>
---
 include/sound/tas2781-tlv.h     |  1 -
 sound/pci/hda/tas2781_hda_i2c.c | 37 +--------------------------------
 2 files changed, 1 insertion(+), 37 deletions(-)

diff --git a/include/sound/tas2781-tlv.h b/include/sound/tas2781-tlv.h
index 4038dd421150..a29bcfb5bb2b 100644
--- a/include/sound/tas2781-tlv.h
+++ b/include/sound/tas2781-tlv.h
@@ -15,7 +15,6 @@
 #ifndef __TAS2781_TLV_H__
 #define __TAS2781_TLV_H__
 
-static const DECLARE_TLV_DB_SCALE(dvc_tlv, -10000, 100, 0);
 static const DECLARE_TLV_DB_SCALE(amp_vol_tlv, 1100, 50, 0);
 
 #endif
diff --git a/sound/pci/hda/tas2781_hda_i2c.c b/sound/pci/hda/tas2781_hda_i2c.c
index 4475cea8e9f7..5acb475c10a7 100644
--- a/sound/pci/hda/tas2781_hda_i2c.c
+++ b/sound/pci/hda/tas2781_hda_i2c.c
@@ -89,7 +89,7 @@ struct tas2781_hda {
 	struct snd_kcontrol *dsp_prog_ctl;
 	struct snd_kcontrol *dsp_conf_ctl;
 	struct snd_kcontrol *prof_ctl;
-	struct snd_kcontrol *snd_ctls[3];
+	struct snd_kcontrol *snd_ctls[2];
 };
 
 static int tas2781_get_i2c_res(struct acpi_resource *ares, void *data)
@@ -294,27 +294,6 @@ static int tasdevice_config_put(struct snd_kcontrol *kcontrol,
 	return ret;
 }
 
-/*
- * tas2781_digital_getvol - get the volum control
- * @kcontrol: control pointer
- * @ucontrol: User data
- * Customer Kcontrol for tas2781 is primarily for regmap booking, paging
- * depends on internal regmap mechanism.
- * tas2781 contains book and page two-level register map, especially
- * book switching will set the register BXXP00R7F, after switching to the
- * correct book, then leverage the mechanism for paging to access the
- * register.
- */
-static int tas2781_digital_getvol(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_value *ucontrol)
-{
-	struct tasdevice_priv *tas_priv = snd_kcontrol_chip(kcontrol);
-	struct soc_mixer_control *mc =
-		(struct soc_mixer_control *)kcontrol->private_value;
-
-	return tasdevice_digital_getvol(tas_priv, ucontrol, mc);
-}
-
 static int tas2781_amp_getvol(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol)
 {
@@ -325,17 +304,6 @@ static int tas2781_amp_getvol(struct snd_kcontrol *kcontrol,
 	return tasdevice_amp_getvol(tas_priv, ucontrol, mc);
 }
 
-static int tas2781_digital_putvol(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_value *ucontrol)
-{
-	struct tasdevice_priv *tas_priv = snd_kcontrol_chip(kcontrol);
-	struct soc_mixer_control *mc =
-		(struct soc_mixer_control *)kcontrol->private_value;
-
-	/* The check of the given value is in tasdevice_digital_putvol. */
-	return tasdevice_digital_putvol(tas_priv, ucontrol, mc);
-}
-
 static int tas2781_amp_putvol(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol)
 {
@@ -381,9 +349,6 @@ static const struct snd_kcontrol_new tas2781_snd_controls[] = {
 	ACARD_SINGLE_RANGE_EXT_TLV("Speaker Analog Gain", TAS2781_AMP_LEVEL,
 		1, 0, 20, 0, tas2781_amp_getvol,
 		tas2781_amp_putvol, amp_vol_tlv),
-	ACARD_SINGLE_RANGE_EXT_TLV("Speaker Digital Gain", TAS2781_DVC_LVL,
-		0, 0, 200, 1, tas2781_digital_getvol,
-		tas2781_digital_putvol, dvc_tlv),
 	ACARD_SINGLE_BOOL_EXT("Speaker Force Firmware Load", 0,
 		tas2781_force_fwload_get, tas2781_force_fwload_put),
 };
-- 
2.44.0