linux-kernel - Re: [PATCH V6 RESEND] HID: ASUS: Add support for ASUS N-Key keyboard

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Date:   Fri, 9 Oct 2020 15:37:20 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Jiri Kosina <jikos@...nel.org>,
        Mark Gross <mgross@...ux.intel.com>
Cc:     Luke D Jones <luke@...nes.dev>, benjamin.tissoires@...hat.com,
        linux-kernel@...r.kernel.org, linux-input@...r.kernel.org
Subject: Re: [PATCH V6 RESEND] HID: ASUS: Add support for ASUS N-Key keyboard

Hi,

On 10/9/20 3:14 PM, Andy Shevchenko wrote:
> On Fri, Oct 09, 2020 at 11:38:55AM +0200, Jiri Kosina wrote:
>> On Thu, 24 Sep 2020, Luke D Jones wrote:
>>
>>> The ASUS N-Key keyboard uses the productId of 0x1866 and is used in
>>> almost all modern ASUS gaming laptops with slight changes to the
>>> firmware. This patch enables: Fn+key hotkeys, keyboard backlight
>>> brightness control, and notify asus-wmi to toggle "fan-mode".
>>>
>>> The keyboard has many of the same key outputs as the existing G752
>>> keyboard including a few extras, and varies a little between laptop
>>> models. The key-sets have been split and sub-grouped so that there
>>> will not be conflict between key event codes used.
>>>
>>> An existing key event used across some keyboards for "Mic Toggle"
>>> has been changed to emit "F20" as this is what all the main
>>> desktop environments are using.
>>>
>>> Additionally this keyboard requires the LED interface to be
>>> intitialised before such things as keyboard backlight control work.
>>>
>>> Misc changes in scope: update some hardcoded comparisons to use an
>>> available define.
>>>
>>> Signed-off-by: Luke D Jones <luke@...nes.dev>
>>
>> Thanks for the patch. Looks good to me in general, one small nit before
>> this can be merged as a whole ...
>>
>>> ---
>>>   drivers/hid/hid-asus.c                     | 188 ++++++++++++++++++---
>>>   drivers/hid/hid-ids.h                      |   1 +
>>>   include/linux/platform_data/x86/asus-wmi.h |   2 +
>>
>> ... I'd like to get Ack from Andy (CCing) on the addition below to
>> asus-wmi.h.
> 
> There is a new sheriff in town (Hans and Mark).
> My personal opinion it is good to go.
> 
> Acked-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

I'm afraid that a quick review by me has found multiple issues with
this patch. I'm going to take a quick break now, I'll email a
detailed review after that.

Regards,

Hans


> 
>> [ ... snip ... ]
>>> diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/platform_data/x86/asus-wmi.h
>>> index 897b8332a39f..05253cfe786c 100644
>>> --- a/include/linux/platform_data/x86/asus-wmi.h
>>> +++ b/include/linux/platform_data/x86/asus-wmi.h
>>> @@ -27,6 +27,8 @@
>>>   #define ASUS_WMI_METHODID_INIT		0x54494E49 /* INITialize */
>>>   #define ASUS_WMI_METHODID_HKEY		0x59454B48 /* Hot KEY ?? */
>>>
>>> +#define ASUS_WMI_METHODID_NOTIF		0x00100021 /* Notify method ?? */
>>> +
>>>   #define ASUS_WMI_UNSUPPORTED_METHOD	0xFFFFFFFE
>>>
>>>   /* Wireless */
>