linux-kernel - Re: [PATCH v2] platform/x86: hp-wmi: Handle Omen Key event

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Date:   Mon, 23 Jan 2023 23:39:46 +0530
From:   Rishit Bansal <rishitbansal0@...il.com>
To:     Hans de Goede <hdegoede@...hat.com>,
        Rishit Bansal <rishitbansal0@...il.com>,
        Mark Gross <markgross@...nel.org>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] platform/x86: hp-wmi: Handle Omen Key event


On 23/01/23 19:13, Hans de Goede wrote:
> Hi,
>
> On 1/20/23 23:12, Rishit Bansal wrote:
>> Add support to map the "HP Omen Key" to KEY_PROG2. Laptops in the HP
>> Omen Series open the HP Omen Command Center application on windows. But,
>> on linux it fails with the following message from the hp-wmi driver:
>>
>> [ 5143.415714] hp_wmi: Unknown event_id - 29 - 0x21a5
>>
>> Also adds support to map Fn+Esc to KEY_FN_ESC. This currently throws the
>> following message on the hp-wmi driver:
>>
>> [ 6082.143785] hp_wmi: Unknown key code - 0x21a7
>>
>> There is also a "Win-Lock" key on HP Omen Laptops which supports
>> Enabling and Disabling the Windows key, which trigger commands 0x21a4
>> and 0x121a4 respectively, but I wasn't able to find any KEY in input.h
>> to map this to.
> We could add KE_IGNORE mappings to hp_wmi_keymap for those,
> doing so should silence the warnings about unknown codes.
>
> If you think this is useful please provide a separate follow-up
> patch for this.


Alright, I will make a follow up patch for this change.


>> Signed-off-by: Rishit Bansal <rishitbansal0@...il.com>
> I have merged this v2 now, but with some coding style changes,
> for your next patches please try to keep the indentation
> and sorting of things correct.


Thank you for pointing out and fixing up the styling issues! I'll surely 
keep this in mind for future patches.


>
>> ---
>> Changes since v1:
>>   - Add support for FN+Esc Key
>> ---
>>   drivers/platform/x86/hp/hp-wmi.c | 4 ++++
>>   1 file changed, 4 insertions(+)
>>
>> diff --git a/drivers/platform/x86/hp/hp-wmi.c b/drivers/platform/x86/hp/hp-wmi.c
>> index 0a99058be813..ab858db551fb 100644
>> --- a/drivers/platform/x86/hp/hp-wmi.c
>> +++ b/drivers/platform/x86/hp/hp-wmi.c
>> @@ -91,6 +91,7 @@ enum hp_wmi_event_ids {
>>   	HPWMI_BATTERY_CHARGE_PERIOD	= 0x10,
>>   	HPWMI_SANITIZATION_MODE		= 0x17,
>>   	HPWMI_SMART_EXPERIENCE_APP	= 0x21,
>> +	HPWMI_OMEN_KEY				= 0x1D,
> There is one <tab> too much before the '= 0x1D' and 0x1D should
> be between the 0x17 and 0x21 lines.
>
>>   };
>>   
>>   /*
>> @@ -219,6 +220,8 @@ static const struct key_entry hp_wmi_keymap[] = {
>>   	{ KE_KEY, 0x21a9,  { KEY_TOUCHPAD_OFF } },
>>   	{ KE_KEY, 0x121a9, { KEY_TOUCHPAD_ON } },
>>   	{ KE_KEY, 0x231b,  { KEY_HELP } },
>> +	{ KE_KEY, 0x21a5,  { KEY_PROG2 }}, /* HP Omen Key */
>> +	{ KE_KEY, 0x21a7, { KEY_FN_ESC }},
> These need to be above the 0x21a9 line, so sorted by base event code
> (lower 16 bits) Also you are missing a space in the indentation of
> the { KEY_FN_ESC } and there should be a space between the 2 }} at
> the end like on the other lines.
>
> Regards,
>
> Hans
>
>
>>   	{ KE_END, 0 }
>>   };
>>   
>> @@ -810,6 +813,7 @@ static void hp_wmi_notify(u32 value, void *context)
>>   	case HPWMI_SMART_ADAPTER:
>>   		break;
>>   	case HPWMI_BEZEL_BUTTON:
>> +	case HPWMI_OMEN_KEY:
>>   		key_code = hp_wmi_read_int(HPWMI_HOTKEY_QUERY);
>>   		if (key_code < 0)
>>   			break;