linux-kernel - Re: [PATCH] Make top/rear speaker, mute and micmute leds work on HP x360 14-ea000 laptops that use Realtek 245 codec

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Date:   Tue, 2 Nov 2021 12:45:13 +0000
From:   Jonathan Clarke <jonathan.a.clarke@...il.com>
To:     Takashi Iwai <tiwai@...e.de>
Cc:     linux-kernel@...r.kernel.org, Takashi Iwai <tiwai@...e.com>,
        alsa-devel@...a-project.org
Subject: Re: [PATCH] Make top/rear speaker, mute and micmute leds work on HP
 x360 14-ea000 laptops that use Realtek 245 codec

On Tue, Nov 02, 2021 at 09:19:25AM +0100, Takashi Iwai wrote:
> Could you try just to flip the bit 0x08?  At LED off state?
> 
> % hda-verb /dev/snd/hwC0D0 0x20 SET_COEF_INDEX 0x0b
> % hda-verb /dev/snd/hwC0D0 0x20 SET_PROC_COEF 0x77f4
> 
> That is, the implementation in alc286_fixup_hp_mute_led_coefbit(),
> which is used by many other HP laptops.

Ah, I see what you mean.  

Yes, you're right, changing from 0x77f4 to 0x77fc makes the mute led light up.
The changes to the other proc_coef bits in my patch are not needed.

I will revise and revert in next few days.  Thanks