bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-04-18 06:44:00 -04:00
Code Issues Packages Projects Releases Wiki Activity

ALSA: i2c: ak4xxx-adda: seed AK5365 cache with reset defaults

Browse Source 
snd_akm4xxx_init() clears the register and volume caches before
dispatching by codec type. The AK5365 case then returns immediately,
leaving the software cache at zero instead of the documented AK5365
reset defaults.

The AK5365 capture volume controls read from volumes[] and the proc
register dump reads from images[], so the initial capture volume state
and proc output are wrong until a control write happens.

Seed the AK5365 cache with its documented reset defaults instead of
adding a guessed init sequence. The datasheet documents the reset
values and states that MCLK/LRCK changes do not require a PDN/PWN
reset because the chip has a built-in reset-free circuit.

Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com>
Link: https://patch.msgid.link/20260408-ak5365-cache-defaults-v1-1-fff639aca3e3@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Cássio Gabriel
2026-04-08 12:17:37 -03:00
committed by Takashi Iwai
parent de65275fc9
commit aa6c1052b7
1 changed files with 6 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
sound/i2c/other/ak4xxx-adda.c
View File

@@ -281,6 +281,9 @@ void snd_akm4xxx_init(struct snd_akm4xxx *ak)
0x07, 0x00, /* 7: ROUT muted */
0xff, 0xff
};
static const unsigned char ak5365_defaults[] = {
0x01, 0x00, 0x00, 0x2b, 0x7f, 0x7f, 0x28, 0x89,
};
int chip;
const unsigned char *ptr, *inits;
@@ -327,10 +330,12 @@ void snd_akm4xxx_init(struct snd_akm4xxx *ak)
ak->total_regs = 0x05;
break;
case SND_AK5365:
/* FIXME: any init sequence? */
ak->num_chips = 1;
ak->name = "ak5365";
ak->total_regs = 0x08;
memcpy(ak->images, ak5365_defaults, sizeof(ak5365_defaults));
snd_akm4xxx_set_vol(ak, 0, 0x04, 127);
snd_akm4xxx_set_vol(ak, 0, 0x05, 127);
return;
case SND_AK4620:
inits = inits_ak4620;