Messages in this thread |  | | Date | Tue, 20 May 2014 19:45:44 -0400 | | Subject | Re: [PATCH v4 01/24] input: Add ff-memless-next module | | From | simon@mungewel ... |
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>> Regarding the question of emulated vs. real effects, can we extend the >> API >> so that applications can know which effects are really supported, and >> enable/disable emulation somehow? > > I suppose that a few extra flags (FF_PERIODIC_EMULATED etc.) defined in > "uapi/linux/input.h" should suffice.
The only problem is that we probably want to maintain backward compatibility so that older apps still see 'PERIODIC' (even though it is emulated). -- #define FF_RUMBLE 0x50 #define FF_PERIODIC 0x51 #define FF_CONSTANT 0x52 #define FF_SPRING 0x53 #define FF_FRICTION 0x54 #define FF_DAMPER 0x55 #define FF_INERTIA 0x56 #define FF_RAMP 0x57 --
Do we therefore have to list extra items in our capabilities? -- static const signed short lg4ff_wheel_effects[] = { FF_CONSTANT, FF_PERIODIC, FF_PERIODIC_NOT_EMULATED, FF_AUTOCENTER, -1 }; --
Simon
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