kernel/arch/powerpc/sysdev/simple_gpio.h, branch linux-4.1.yHosts the 0x221E linux distro kernel.https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-4.1.y2008-12-30T17:13:45Zpowerpc: Implement GPIO driver for simple memory-mapped banks2008-12-30T17:13:45ZAnton Vorontsovavorontsov@ru.mvista.com2008-12-18T16:37:26Zurn:sha1:3d64de9c50619d32eb71d993d23a50b98d12d3c0
The driver supports very simple GPIO controllers, that is, when a
controller provides just a 'data' register. Such controllers may be
found in various BCSRs (Board's FPGAs used to control board's
switches, LEDs, chip-selects, Ethernet/USB PHY power, etc).
So far we support only 1-byte GPIO banks. Support for other widths may
be implemented when/if needed.
p.s.
To avoid "made up" compatible entries (like compatible = "simple-gpio"),
boards must call simple_gpiochip_init() to pass the compatible string.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>