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Date:	Mon, 30 Jun 2014 08:45:31 +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 2014-06-30 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?

Jan



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