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mec1322: reports actual GPIO level for output pins

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For open-drain output pins, this would allow us to easily check pin
state without changing it to input.

BUG=chrome-os-partner:26483
TEST=Toggle output level and read it back.
BRANCH=None

Change-Id: Ia7ceb7a221a8f0cfec9b19a5c5baae4d5441150f
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/207060
Reviewed-by: Randall Spangler <rspangler@chromium.org>
This commit is contained in:
Vic Yang
2014-07-08 16:19:55 -07:00
committed by chrome-internal-fetch
parent 1717d598b2
commit 27a0968703
1 changed files with 1 additions and 4 deletions
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5
chip/mec1322/gpio.c
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@@ -54,10 +54,7 @@ test_mockable int gpio_get_level(enum gpio_signal signal)
i = 31 - __builtin_clz(mask);
val = MEC1322_GPIO_CTL(gpio_list[signal].port, i);
if (val & (1 << 9)) /* Output */
return (val & (1 << 16)) ? 1 : 0;
else
return (val & (1 << 24)) ? 1 : 0;
return (val & (1 << 24)) ? 1 : 0;
}
void gpio_set_level(enum gpio_signal signal, int value)