GPIO: Move definition of alternate functions to gpio.inc

This is a straightforward conversion of existing tables
into X-Macro style definitions for the GPIO alternate
functions.  This change in itself, is not particularly
powerful, but having all GPIO settings in a single file
makes a board easier to understand.

Signed-off-by: Anton Staaf <robotboy@chromium.org>

BRANCH=none
TEST=make buildall -j
     Followed by manual testing of interrupt on change and UART
     functionality on STM32F0 based discovery board.

Change-Id: Ib7f1f014f4bd289d7c0ac3100470ba2dc71ca579
Reviewed-on: https://chromium-review.googlesource.com/207987
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Tested-by: Anton Staaf <robotboy@chromium.org>
Commit-Queue: Anton Staaf <robotboy@chromium.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/include/gpio_list.h b/include/gpio_list.h
index 6d41fb9115..9077c17fd2 100644
--- a/include/gpio_list.h
+++ b/include/gpio_list.h
@@ -15,3 +15,16 @@ const struct gpio_info gpio_list[] = {
 };
 
 BUILD_ASSERT(ARRAY_SIZE(gpio_list) == GPIO_COUNT);
+
+/*
+ * Construct the gpio_alt_funcs array.  This array is used by gpio_config_module
+ * to enable and disable GPIO alternate functions on a module by module basis.
+ */
+#define ALTERNATE(port, mask, function, module, flags)	\
+	{GPIO_##port, mask, function, module, flags},
+
+const struct gpio_alt_func gpio_alt_funcs[] = {
+	#include "gpio.wrap"
+};
+
+const int gpio_alt_funcs_count = ARRAY_SIZE(gpio_alt_funcs);