[U-Boot] [PATCH v2] gpio: omap_gpio: Fix valid gpio range for AM33XX

[Axel Lin <axel.lin@ingics.com>]

AM33XX has 4 gpio banks, thus the valid gpio range should be 0 ... 127.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
v2: define OMAP_MAX_GPIO and use it.
This change is mainly based on Stefan's comment, however I use
OMAP_MAX_GPIO instead of CONFIG_OMAP_MAX_GPIO because having CONFIG_ prefix
seems meaning it can be configurable in configs.

 drivers/gpio/omap_gpio.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/omap_gpio.c b/drivers/gpio/omap_gpio.c
index a30d7f0..6fa57c9 100644
--- a/drivers/gpio/omap_gpio.c
+++ b/drivers/gpio/omap_gpio.c
@@ -40,6 +40,12 @@
 #include <asm/io.h>
 #include <asm/errno.h>
 
+#if defined(CONFIG_AM33XX)
+#define OMAP_MAX_GPIO		128
+#else
+#define OMAP_MAX_GPIO		192
+#endif
+
 #define OMAP_GPIO_DIR_OUT	0
 #define OMAP_GPIO_DIR_IN	1
 
@@ -55,7 +61,7 @@ static inline int get_gpio_index(int gpio)
 
 int gpio_is_valid(int gpio)
 {
-	return (gpio >= 0) && (gpio < 192);
+	return (gpio >= 0) && (gpio < OMAP_MAX_GPIO);
 }
 
 static int check_gpio(int gpio)
-- 
1.8.1.2