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| /rk3399_rockchip-uboot/drivers/gpio/ |
| H A D | mxc_gpio.c | 5dafa4543c399d329c7b01df1afa98437861cac0 Mon Aug 20 10:55:41 UTC 2012 Benoît Thébaudeau <benoit.thebaudeau@advansee.com> mxc: Make gpio_get_value() use PSR
gpio_get_value() should use PSR like Linux, not DR, because DR does not always
reflect the pin state, while PSR does. This is especially useful to detect a
short circuit on a GPIO pin configured as output, or to read the level of a pin
controlled by a non-GPIO IOMUX function.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Stefano Babic <sbabic@denx.de>
Acked-by: Stefano Babic <sbabic@denx.de>
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