Re: [PATCH] ASoC: sunxi: DMIC: Add controls for adjusting the mic gains

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On 4/24/24 20:42, Jernej Škrabec wrote:
Hi Joao,
Hi Jernej,  thanks for your prompt response.

Dne ponedeljek, 22. april 2024 ob 17:02:13 GMT +2 je Joao Schim napisal(a):
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
Add SoB tag.
Yeah, i realized that too late. Thanks for bringing that to my attention. I will add it in v1.

---
  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);
DECLARE_TLV_DB_SCALE is old name, SNDRV_CTL_TLVD_DECLARE_DB_SCALE should be
used instead.
I can't seem to find that define in HEAD. what code-base are you referring to that i should checkout ?

Other than that, it looks fine.

Thanks.

Best regards,
Jernej

+
+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)




Kind regards,

Joao




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