Dear very kind guys
I would like to use snd_soc_add_controls for ak4642.
But I'm not good at it now,
so, for 1st step, I would like to add "Playback Volume".
Playback Volume length of ak4642 chip is -115.0 dB to +12.0 dB
step is 0.5 dB. and It can use mute.
So, I created code like this
----------------------------------------------------------------------------
static const DECLARE_TLV_DB_SCALE(out_tlv, -11500, 50, 1); /* 0.5 dB step */
static const struct snd_kcontrol_new ak4642_snd_controls[] = {
SOC_DOUBLE_R_TLV("Playback Volume", L_DVC, R_DVC,
0, 256, 0, out_tlv),
};
----------------------------------------------------------------------------
But I wonder
#define DECLARE_TLV_DB_SCALE(name, min, step, mute)
Does this "mute" mean that it can use mute ?
But how to ?
#define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array)
What is this "xinvert" ?
Can you please teach me about above ?
And where is these code used ?
It seems very complex for me...
Best regards
--
Kuninori Morimoto
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