From: Joao Schim <joao@schimsalabim.eu>
To: Ban Tao <fengzheng923@gmail.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>, Jaroslav Kysela <perex@perex.cz>,
Takashi Iwai <tiwai@suse.com>, Chen-Yu Tsai <wens@csie.org>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
Samuel Holland <samuel@sholland.org>
Cc: alsa-devel@alsa-project.org, linux-sound@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: [PATCH] ASoC: sunxi: DMIC: Add controls for adjusting the mic gains
Date: Mon, 22 Apr 2024 17:02:13 +0200 [thread overview]
Message-ID: <20240422150213.4040734-1-joao@schimsalabim.eu> (raw)
The AllWinner H6 and later SoCs that sport a DMIC block contain a set of registers to control
the gain (left + right) of each of the four supported channels.
Add ASoC controls for changing each of the stereo channel gains using alsamixer and alike
---
sound/soc/sunxi/sun50i-dmic.c | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/sound/soc/sunxi/sun50i-dmic.c b/sound/soc/sunxi/sun50i-dmic.c
index c76628bc86c6..f8613d8c3462 100644
--- a/sound/soc/sunxi/sun50i-dmic.c
+++ b/sound/soc/sunxi/sun50i-dmic.c
@@ -14,6 +14,7 @@
#include <sound/dmaengine_pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
+#include <sound/tlv.h>
#define SUN50I_DMIC_EN_CTL (0x00)
#define SUN50I_DMIC_EN_CTL_GLOBE BIT(8)
@@ -43,6 +44,17 @@
#define SUN50I_DMIC_CH_NUM_N_MASK GENMASK(2, 0)
#define SUN50I_DMIC_CNT (0x2c)
#define SUN50I_DMIC_CNT_N (1 << 0)
+#define SUN50I_DMIC_D0D1_VOL_CTR (0x30)
+ #define SUN50I_DMIC_D0D1_VOL_CTR_0R (0)
+ #define SUN50I_DMIC_D0D1_VOL_CTR_0L (8)
+ #define SUN50I_DMIC_D0D1_VOL_CTR_1R (16)
+ #define SUN50I_DMIC_D0D1_VOL_CTR_1L (24)
+#define SUN50I_DMIC_D2D3_VOL_CTR (0x34)
+ #define SUN50I_DMIC_D2D3_VOL_CTR_2R (0)
+ #define SUN50I_DMIC_D2D3_VOL_CTR_2L (8)
+ #define SUN50I_DMIC_D2D3_VOL_CTR_3R (16)
+ #define SUN50I_DMIC_D2D3_VOL_CTR_3L (24)
+
#define SUN50I_DMIC_HPF_CTRL (0x38)
#define SUN50I_DMIC_VERSION (0x50)
@@ -273,8 +285,30 @@ static const struct of_device_id sun50i_dmic_of_match[] = {
};
MODULE_DEVICE_TABLE(of, sun50i_dmic_of_match);
+static const DECLARE_TLV_DB_SCALE(sun50i_dmic_vol_scale, -12000, 75, 1);
+
+static const struct snd_kcontrol_new sun50i_dmic_controls[] = {
+
+ SOC_DOUBLE_TLV("DMIC Channel 0 Capture Volume", SUN50I_DMIC_D0D1_VOL_CTR,
+ SUN50I_DMIC_D0D1_VOL_CTR_0L, SUN50I_DMIC_D0D1_VOL_CTR_0R,
+ 0xFF, 0, sun50i_dmic_vol_scale),
+ SOC_DOUBLE_TLV("DMIC Channel 1 Capture Volume", SUN50I_DMIC_D0D1_VOL_CTR,
+ SUN50I_DMIC_D0D1_VOL_CTR_1L, SUN50I_DMIC_D0D1_VOL_CTR_1R,
+ 0xFF, 0, sun50i_dmic_vol_scale),
+ SOC_DOUBLE_TLV("DMIC Channel 2 Capture Volume", SUN50I_DMIC_D2D3_VOL_CTR,
+ SUN50I_DMIC_D2D3_VOL_CTR_2L, SUN50I_DMIC_D2D3_VOL_CTR_2R,
+ 0xFF, 0, sun50i_dmic_vol_scale),
+ SOC_DOUBLE_TLV("DMIC Channel 3 Capture Volume", SUN50I_DMIC_D2D3_VOL_CTR,
+ SUN50I_DMIC_D2D3_VOL_CTR_3L, SUN50I_DMIC_D2D3_VOL_CTR_3R,
+ 0xFF, 0, sun50i_dmic_vol_scale),
+
+
+};
+
static const struct snd_soc_component_driver sun50i_dmic_component = {
.name = "sun50i-dmic",
+ .controls = sun50i_dmic_controls,
+ .num_controls = ARRAY_SIZE(sun50i_dmic_controls),
};
static int sun50i_dmic_runtime_suspend(struct device *dev)
--
2.25.1
next reply other threads:[~2024-04-23 19:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-22 15:02 Joao Schim [this message]
2024-04-24 18:42 ` [PATCH] ASoC: sunxi: DMIC: Add controls for adjusting the mic gains Jernej Škrabec
2024-04-25 11:03 ` Joao Schim
2024-04-26 14:39 ` Jernej Škrabec
2024-04-29 18:39 ` Joao Schim
2024-04-29 18:47 ` Jernej Škrabec
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