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| /freebsd-10.3-release/sys/mips/atheros/ | ||
| H A D | ar71xx_gpio.c | diff 228518 Thu Dec 15 01:07:11 MST 2011 adrian Re-jiggle the GPIO code a little to remove the hard-coded AR71xx GPIO config and function mask setup. * "gpiomask" now specifies which GPIO pins to enable, for devices to bind to. * "function_set" allows bits in the function register to be set at GPIO setup. * "function_clear" allows bits in the function register to be cleared at GPIO setup. The function_set/function_clear bits allow for individual GPIO pins to either drive a GPIO line or an alternate function - eg USB, JTAG, etc. This allows for things like CS1/CS2 be enabled for those boards w/ >1 SPI device connected, or disabling JTAG for the AR7240 (which is apparently needed ..) I've verified this on the AR71xx. |
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