lib/gpio: add pullup & pulldown gpio_base2_value() variants
Provide common implementations for gpio_base2_value() variants
which configure the gpio for internal pullups and pulldowns.
BUG=chrome-os-partner:54949
BRANCH=None
TEST=Built and used on reef for memory config.
Change-Id: I9be8813328e99d28eb4145501450caab25d51f37
Signed-off-by: Aaron Durbin <adurbin@chromuim.org>
Reviewed-on: https://review.coreboot.org/15557
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Furquan Shaikh <furquan@google.com>
diff --git a/src/include/gpio.h b/src/include/gpio.h
index 69a0828..3a8951c 100644
--- a/src/include/gpio.h
+++ b/src/include/gpio.h
@@ -56,8 +56,13 @@
*
* gpio[]: pin positions to read. gpio[0] is less significant than gpio[1].
* num_gpio: number of pins to read.
+ *
+ * There are also pulldown and pullup variants which default each gpio to
+ * be configured with an internal pulldown and pullup, respectively.
*/
int gpio_base2_value(gpio_t gpio[], int num_gpio);
+int gpio_pulldown_base2_value(gpio_t gpio[], int num_gpio);
+int gpio_pullup_base2_value(gpio_t gpio[], int num_gpio);
/*
* Read the value presented by the set of GPIOs, when each pin is interpreted