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7 As a Kconfig option, individual GPIO signals may be accessed from
13 GPIOs are identified as they are inside the kernel, using integers in
14 the range 0..INT_MAX. See Documentation/admin-guide/gpio for more information.
23 /direction ... r/w as: in, out (default low); write: high, low
24 /edge ... r/w as: none, falling, rising, both
25 /active_low ... r/w as: 0, 1
27 /base ... (r/o) same as N
29 /ngpio ... (r/o) number of GPIOs; numbered N to N + (ngpio - 1)
32 /direction ... r/w as: in, out (default low); write: high, low
39 This ABI is obsoleted by Documentation/ABI/testing/gpio-cdev and will be
40 removed after 2020.