To David Herrmann, and all of the linux input mailing list, This is to report a bug concerning a psx/ps2 to usb game controller adapter that is marketed to work on the PS3. The device presents itself using the manufacturer id of sony and the device id of the official sixaxis/dualshock 3 controllers, and seems to self-initialize upon being connected (unlike the original controller which requires that one presses the menu button). The problem is that the 'circle', 'square' and 'cross' buttons don't work while every other button does. The adapter can emulate a home button press by using the 'analog' button on the controller, but this also doesn't work. The jstest applications confirms that the driver is presenting this controller as having only 13 buttons, while a real ds3 is presented as having 17. The same device id and vendor id are shown in jstest, both are using the hid driver, and everything in dmesg and lsusb appears the same between the original controller and the adapter. I can provide every output log that is required. After having a look at hid-sony.c, it's clear that the buttons that are not working (square, circle, cross, and home) are the last four on the sixaxis_keymap[] bitmap. I speculate that there is some process which is used to identify the control which fails to work with the current driver, so that it ends up defaulting to a different keymap with fewer buttons than needed. This very same problem seems to have been reported years ago (circa 2012 iirc) on fedora forums for some non-official ps3 controller replicas that also present themselves as the ps3 controller. The fix to this problem could very well improve compatibility with such clone controllers. I have observed it works well in both the ps3 and a windows pc with the non-official drivers for the dual shock controller, so I can confirm the controller work and the adapter works as well. Be sure that I can run any test that you believe may be useful to fix this issue, and can compile and test possible solutions in my system. Best regards, Daniel Jimenez
