Re: [PATCH RESEND v2] HID: winwing: Enable rumble effects

[Ivan Gorinov <linux-kernel@altimeter.info>]

On 2026-02-26 06:58, Jiri Kosina wrote:

> On Thu, 26 Feb 2026, Ivan Gorinov wrote:
> 
>> Enable rumble motor control on TGRIP-15E and TGRIP-15EX throttle grips
>> by sending haptic feedback commands (EV_FF events) to the input 
>> device.
>> 
>> Signed-off-by: Ivan Gorinov <linux-kernel@altimeter.info>
> [ ... snip ... ]
> 
>> +
>> +        buf[0] = 0x02;
>> +        buf[1] = 0x03;
>> +        buf[2] = 0xbf;
>> +        buf[3] = 0x00;
>> +        buf[4] = 0x00;
>> +        buf[5] = 0x03;
>> +        buf[6] = 0x49;
>> +        buf[7] = 0x00;
>> +        buf[8] = m;
>> +        buf[9] = 0x00;
>> +        buf[10] = 0;
>> +        buf[11] = 0;
>> +        buf[12] = 0;
>> +        buf[13] = 0;
> 
> Do these magic numbers have any real meaning, or is it just mimicking
> observed binary stream?
> It'd be nice to have at least short comment explaining it.

Mimicking USB requests captured by usbmon when the vendor's app is 
running in a Win10 VM (Qemu).
I will add some comments.