Messages in this thread |  | | Date | Tue, 20 May 2014 23:26:54 +0200 | | Subject | Re: [PATCH v4 01/24] input: Add ff-memless-next module | | From | Elias Vanderstuyft <> |
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On Tue, May 20, 2014 at 10:58 PM, Michal Malý <madcatxster@devoid-pointer.net> wrote: > On Tuesday 20 of May 2014 16:16:12 simon@mungewell.org wrote: >> 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.
@Dmitry: Now that we're talking about API changes, I would like to propose some additional things in the Linux FF API:
- Possibility to *get* FF state variables, such as the value of the current GAIN, and the current AUTOCENTER: At the moment, only *setting* is possible. This poses a problem when implementing proper AUTOCENTER state recovery (upon closing a Windows program) in Wine, because the initial AUTOCENTER state was unknown. The same applies for GAIN.
- Introduce multiple types of GAIN, apart from the current global GAIN, e.g. GAIN_CONSTANT and GAIN_DAMPER: This is mainly on request of some users, especially Logitech users: on Windows Logitech additionally supports to set the global Damper and Spring gain. Maybe it would be nicer to create a global gain for every supported Linux FF effect?
Thanks, Elias -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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