Dmitry Thanks for the comments On 07/28/2014 12:43 PM, Dmitry Torokhov wrote: > Hi Dan, > > On Mon, Jul 28, 2014 at 11:53:23AM -0500, Dan Murphy wrote: >> Add the TI drv260x haptics/vibrator driver. >> This device uses the input force feedback >> to produce a wave form to driver an >> ERM or LRA actuator device. >> >> The initial driver supports the devices >> real time playback mode. But the device >> has additional wave patterns in ROM. > > As it presented the device appears to be a memoryless device, however > you present it to the rest of the system as if it can support playback > of multiple effects simultaneously, which is incorrect. > > My guess that you need to engage the memoryless input library to schedule > handling multiple effects for your device, including ramping up, ramping > down, stopping playback when effects runs out, etc. > > Thanks. > > I had written the driver originally to be a memless device. But when calling the driver from user space I was not getting the duration, strength of any information from the ff_device structure except the type. The values in the structure were all being passed as 0's. I will attempt it again as a memless device. Dan -- ------------------ Dan Murphy -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
