Messages in this thread | | | From | Marek Vasut <> | Subject | Re: what is the meaning of matrix_keypad_platform_data.active_low | Date | Tue, 25 Aug 2009 12:21:10 +0200 |
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Dne Út 25. srpna 2009 09:18:23 Xiangfu Liu napsal(a): > Hi > ./include/linux/input/matrix_keypad.h > there no help in matrix_keypad.h about active_low. > > I guess. when set active_low to 1.means: > > 0: key press > 1: key not press > > right?
Hi, yeah, it means the GPIO pins have inverted voltage levels. > > thanks for help. -- 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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