From ea845714fd4cc163002ca1bbd3c14ab4e35ed3ec Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Wed, 2 May 2012 19:41:44 -0700
Subject: [PATCH] Add gpio_get_name() to return the name of a signal

Add this to the GPIO API. It seems that the implementation is copied
in LM4 and STM32 so I have reluctantly done the same with this new
function.

BUG=chrome-os-partner:9424
TEST=build and boot on Daisy

Change-Id: Ifddc52e69b2b33af2645384c0171dd264e588fcd
Signed-off-by: Simon Glass <sjg@chromium.org>
---
 chip/lm4/gpio.c             | 6 ++++++
 chip/stm32/gpio-stm32l15x.c | 6 ++++++
 include/gpio.h              | 8 ++++++++
 3 files changed, 20 insertions(+)

diff --git a/chip/lm4/gpio.c b/chip/lm4/gpio.c
index 09be616771..fedfedc6e8 100644
--- a/chip/lm4/gpio.c
+++ b/chip/lm4/gpio.c
@@ -182,6 +182,12 @@ void gpio_set_alternate_function(int port, int mask, int func)
 }
 
 
+const char *gpio_get_name(enum gpio_signal signal)
+{
+	return gpio_list[signal].name;
+}
+
+
 int gpio_get_level(enum gpio_signal signal)
 {
 	return LM4_GPIO_DATA(gpio_list[signal].port,
diff --git a/chip/stm32/gpio-stm32l15x.c b/chip/stm32/gpio-stm32l15x.c
index 55eaa22171..cd07e61361 100644
--- a/chip/stm32/gpio-stm32l15x.c
+++ b/chip/stm32/gpio-stm32l15x.c
@@ -127,6 +127,12 @@ void gpio_set_alternate_function(int port, int mask, int func)
 }
 
 
+const char *gpio_get_name(enum gpio_signal signal)
+{
+	return gpio_list[signal].name;
+}
+
+
 int gpio_get_level(enum gpio_signal signal)
 {
 	return !!(STM32_GPIO_IDR_OFF(gpio_list[signal].port) &
diff --git a/include/gpio.h b/include/gpio.h
index 23cd1e9537..b3bd4258f4 100644
--- a/include/gpio.h
+++ b/include/gpio.h
@@ -62,6 +62,14 @@ int gpio_pre_init(void);
 /* Gets the current value of a signal (0=low, 1=hi). */
 int gpio_get_level(enum gpio_signal signal);
 
+/**
+ * Returns the name of a given GPIO signal.
+ *
+ * @param signal	Signal to return.
+ * @returns name of the given signal
+ */
+const char *gpio_get_name(enum gpio_signal signal);
+
 /* Sets the current value of a signal.  Returns error if the signal is
  * not supported or is an input signal. */
 int gpio_set_level(enum gpio_signal signal, int value);