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

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Message-ID: <2262648.iZASKD2KPV@jernej-laptop>
Date: Fri, 26 Apr 2024 16:39:22 +0200
From: Jernej Škrabec <jernej.skrabec@...il.com>
To: Ban Tao <fengzheng923@...il.com>, Liam Girdwood <lgirdwood@...il.com>,
 Mark Brown <broonie@...nel.org>, Jaroslav Kysela <perex@...ex.cz>,
 Takashi Iwai <tiwai@...e.com>, Chen-Yu Tsai <wens@...e.org>,
 Samuel Holland <samuel@...lland.org>, Joao Schim <joao@...imsalabim.eu>
Cc: alsa-devel@...a-project.org, linux-sound@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
 linux-kernel@...r.kernel.org
Subject:
 Re: [PATCH] ASoC: sunxi: DMIC: Add controls for adjusting the mic gains

Dne četrtek, 25. april 2024 ob 13:03:56 GMT +2 je Joao Schim napisal(a):
> 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 ?

Here is define: 
https://elixir.bootlin.com/linux/v6.9-rc1/source/include/uapi/sound/tlv.h#L52

However, I'm not sure if this message means DECLARE_TLV_DB_SCALE is
deprecated or not:
https://elixir.bootlin.com/linux/v6.9-rc1/source/include/sound/tlv.h#L12

Best regards,
Jernej

> >
> > 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
> 
>