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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [GLK DSI] Black screen after grub - Ubuntu 18.04 - kernel latest tip 21.11.2018"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108826#c129">Comment # 129</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [GLK DSI] Black screen after grub - Ubuntu 18.04 - kernel latest tip 21.11.2018"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108826">bug 108826</a>
from <span class="vcard"><a class="email" href="mailto:markwynngarcia@outlook.com" title="Mark Wynn Garcia <markwynngarcia@outlook.com>"> <span class="fn">Mark Wynn Garcia</span></a>
</span></b>
<pre>Please sanity check this:
<a href="https://github.com/torvalds/linux/blob/3601fe43e8164f67a8de3de8e988bfcb3a94af46/include/dt-bindings/gpio/gpio.h#L15">https://github.com/torvalds/linux/blob/3601fe43e8164f67a8de3de8e988bfcb3a94af46/include/dt-bindings/gpio/gpio.h#L15</a>
#define GPIO_ACTIVE_LOW 1
<a href="https://github.com/torvalds/linux/blob/903b77c631673eeec9e9114e9524171cdf9a2646/include/linux/gpio/consumer.h#L51">https://github.com/torvalds/linux/blob/903b77c631673eeec9e9114e9524171cdf9a2646/include/linux/gpio/consumer.h#L51</a>
#define GPIOD_FLAGS_BIT_DIR_SET BIT(0)
#define GPIOD_FLAGS_BIT_DIR_OUT BIT(1)
...
GPIOD_OUT_LOW = GPIOD_FLAGS_BIT_DIR_SET | GPIOD_FLAGS_BIT_DIR_OUT,
so GPIO_ACTIVE_LOW == GPIOD_OUT_LOW !!!(?)</pre>
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