Unverified Commit 9a8caddd authored by Joao Schim's avatar Joao Schim Committed by Mark Brown
Browse files

ASoC: sunxi: DMIC: Add controls for adjusting the mic gains 



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

Signed-off-by: default avatarJoao Schim <joao@schimsalabim.eu>
Reviewed-by: default avatarJernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20240429194920.1596257-1-joao@schimsalabim.eu


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 4a1baeef

sound/soc/sunxi/sun50i-dmic.c

+34 −0
Original line number Diff line number Diff line
@@ -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 SNDRV_CTL_TLVD_DECLARE_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)