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

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Message-ID: <53B219DF.6090807@canonical.com>
Date:	Tue, 01 Jul 2014 10:15:59 +0800
From:	Hui Wang <hui.wang@...onical.com>
To:	Jan Kiszka <jan.kiszka@....de>
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 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.

>
> Jan
>
>

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