linux-kernel - Re: [V2 PATCH] ALSA: hda - Enable mute/mic-mute LEDs for more Thinkpads with Conexant codec

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Message-ID: <53B26575.1000003@web.de>
Date:	Tue, 01 Jul 2014 09:38:29 +0200
From:	Jan Kiszka <jan.kiszka@....de>
To:	Hui Wang <hui.wang@...onical.com>
CC:	Hui Wang <jason77.wang@...il.com>, tiwai@...e.de,
	alsa-devel@...a-project.org, alex.hung@...onical.com,
	yk@...onical.com, david.henningsson@...onical.com,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [V2 PATCH] ALSA: hda - Enable mute/mic-mute LEDs for more Thinkpads
 with Conexant codec

On 2014-07-01 04:15, Hui Wang wrote:
> On 06/30/2014 02:45 PM, Jan Kiszka wrote:
>> On 2014-06-30 04:04, Hui Wang wrote:
>>> On 06/29/2014 07:33 PM, Jan Kiszka wrote:
>>>> On 2013-11-27 07:47, Hui Wang wrote:
>>>>> Most Thinkpad Edge series laptops use conexant codec, so far although
>>>>> the codecs have different minor Vendor Id and minor Subsystem Id,
>>>>> they all belong to the cxt5066 family, this change can make the
>>>>> mute/mic-mute LEDs support more generic among cxt_5066 family.
>>>>>
>>>>> This design refers to the similar solution for the realtek codec
>>>>> ALC269 family in the patch_realtek.c.
>>>>>
>>>>> Cc: Alex Hung <alex.hung@...onical.com>
>>>>> Cc: David Henningsson <david.henningsson@...onical.com>
>>>>> Signed-off-by: Hui Wang <hui.wang@...onical.com>
>>>>> ---
>>>>>    sound/pci/hda/patch_conexant.c | 23 +++++++++++++++++++++++
>>>>>    1 file changed, 23 insertions(+)
>>>>>
>>>>> diff --git a/sound/pci/hda/patch_conexant.c
>>>>> b/sound/pci/hda/patch_conexant.c
>>>>> index c205bb1..1f2717f 100644
>>>>> --- a/sound/pci/hda/patch_conexant.c
>>>>> +++ b/sound/pci/hda/patch_conexant.c
>>>>> @@ -3244,9 +3244,29 @@ enum {
>>>>>    #if IS_ENABLED(CONFIG_THINKPAD_ACPI)
>>>>>      #include <linux/thinkpad_acpi.h>
>>>>> +#include <acpi/acpi.h>
>>>>>      static int (*led_set_func)(int, bool);
>>>>>    +static acpi_status acpi_check_cb(acpi_handle handle, u32 lvl, void
>>>>> *context,
>>>>> +                 void **rv)
>>>>> +{
>>>>> +    bool *found = context;
>>>>> +    *found = true;
>>>>> +    return AE_OK;
>>>>> +}
>>>>> +
>>>>> +static bool is_thinkpad(struct hda_codec *codec)
>>>>> +{
>>>>> +    bool found = false;
>>>>> +    if (codec->subsystem_id >> 16 != 0x17aa)
>>>>> +        return false;
>>>>> +    if (ACPI_SUCCESS(acpi_get_devices("LEN0068", acpi_check_cb,
>>>>> &found, NULL)) && found)
>>>>> +        return true;
>>>>> +    found = false;
>>>>> +    return ACPI_SUCCESS(acpi_get_devices("IBM0068", acpi_check_cb,
>>>>> &found, NULL)) && found;
>>>>> +}
>>>>> +
>>>>>    static void update_tpacpi_mute_led(void *private_data, int enabled)
>>>>>    {
>>>>>        struct hda_codec *codec = private_data;
>>>>> @@ -3279,6 +3299,8 @@ static void cxt_fixup_thinkpad_acpi(struct
>>>>> hda_codec *codec,
>>>>>        bool removefunc = false;
>>>>>          if (action == HDA_FIXUP_ACT_PROBE) {
>>>>> +        if (!is_thinkpad(codec))
>>>>> +            return;
>>>>>            if (!led_set_func)
>>>>>                led_set_func = symbol_request(tpacpi_led_set);
>>>>>            if (!led_set_func) {
>>>>> @@ -3494,6 +3516,7 @@ static const struct snd_pci_quirk
>>>>> cxt5066_fixups[] = {
>>>>>        SND_PCI_QUIRK(0x17aa, 0x3975, "Lenovo U300s",
>>>>> CXT_FIXUP_STEREO_DMIC),
>>>>>        SND_PCI_QUIRK(0x17aa, 0x3977, "Lenovo IdeaPad U310",
>>>>> CXT_FIXUP_STEREO_DMIC),
>>>>>        SND_PCI_QUIRK(0x17aa, 0x397b, "Lenovo S205",
>>>>> CXT_FIXUP_STEREO_DMIC),
>>>>> +    SND_PCI_QUIRK_VENDOR(0x17aa, "Thinkpad",
>>>>> CXT_FIXUP_THINKPAD_ACPI),
>>>>>        SND_PCI_QUIRK(0x1c06, 0x2011, "Lemote A1004",
>>>>> CXT_PINCFG_LEMOTE_A1004),
>>>>>        SND_PCI_QUIRK(0x1c06, 0x2012, "Lemote A1205",
>>>>> CXT_PINCFG_LEMOTE_A1205),
>>>>>        {}
>>>>>
>>>> Starting with this patch, my Lenovo Thinkpad X121e netbook (it's
>>>> without
>>>> any mute LEDs, BTW, there is only a power LED) considers the power
>>>> button as hard reset. I have to exclude my machine from that ACPI fixup
>>>> (this is on top of current Linus master):
>>> It seems more like a firmware issue, in the acpi code, the "SSMS" is for
>>> mute led, and the "MMTS" is for micmute led, I don't know why your
>>> machine can pass "SSMS" or "MMTS" scanning even without mute LEDs.
>>>
>> Is there anything I can debug or any information I can collect from my
>> box to examine this?
> What is the linux distribution on your machine? And use showkey to catch
> the keycode of that button.

I'm running OpenSUSE 13.1. The reported keycode of the power button is 116.

Jan



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