ARM: OMAP: GPIO: Fix valid range and enable usage of all GPIOs on OMAP5

The omap_gpio driver is used by AM33XX, OMAP3/4, OMAP54XX and DRA7XX SoCs.
These SoCs have different gpio count but currently omap_gpio driver uses hard
coded 192 which is wrong.

This patch fixes this issue by:
1. Move define of OMAP_MAX_GPIO to all arch/arm/include/asm/arch-omap*/gpio.h.
2. Update gpio bank settings and enable GPIO modules 7 & 8 clocks for OMAP5.

Thanks for Lubomir Popov to provide valuable comments to fix this issue.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Tested-by: Lubomir Popov <lpopov@mm-sol.com>
Acked-by: Heiko Schocher <hs@denx.de>

arch/arm/cpu/armv7/omap5/hw_data.c

@@ -412,6 +412,8 @@ void enable_basic_clocks(void)
 		(*prcm)->cm_l4per_gpio4_clkctrl,
 		(*prcm)->cm_l4per_gpio5_clkctrl,
 		(*prcm)->cm_l4per_gpio6_clkctrl,
+		(*prcm)->cm_l4per_gpio7_clkctrl,
+		(*prcm)->cm_l4per_gpio8_clkctrl,
 		0
 	};
 

arch/arm/cpu/armv7/omap5/hwinit.c

@@ -43,13 +43,15 @@ DECLARE_GLOBAL_DATA_PTR;
 
 u32 *const omap_si_rev = (u32 *)OMAP_SRAM_SCRATCH_OMAP_REV;
 
-static struct gpio_bank gpio_bank_54xx[6] = {
+static struct gpio_bank gpio_bank_54xx[8] = {
 	{ (void *)OMAP54XX_GPIO1_BASE, METHOD_GPIO_24XX },
 	{ (void *)OMAP54XX_GPIO2_BASE, METHOD_GPIO_24XX },
 	{ (void *)OMAP54XX_GPIO3_BASE, METHOD_GPIO_24XX },
 	{ (void *)OMAP54XX_GPIO4_BASE, METHOD_GPIO_24XX },
 	{ (void *)OMAP54XX_GPIO5_BASE, METHOD_GPIO_24XX },
 	{ (void *)OMAP54XX_GPIO6_BASE, METHOD_GPIO_24XX },
+	{ (void *)OMAP54XX_GPIO7_BASE, METHOD_GPIO_24XX },
+	{ (void *)OMAP54XX_GPIO8_BASE, METHOD_GPIO_24XX },
 };
 
 const struct gpio_bank *const omap_gpio_bank = gpio_bank_54xx;

arch/arm/include/asm/arch-am33xx/gpio.h

@@ -21,6 +21,8 @@
 
 #include <asm/omap_gpio.h>
 
+#define OMAP_MAX_GPIO		128
+
 #define AM33XX_GPIO0_BASE       0x44E07000
 #define AM33XX_GPIO1_BASE       0x4804C000
 #define AM33XX_GPIO2_BASE       0x481AC000

arch/arm/include/asm/arch-omap3/gpio.h

@@ -40,6 +40,8 @@
 
 #include <asm/omap_gpio.h>
 
+#define OMAP_MAX_GPIO			192
+
 #define OMAP34XX_GPIO1_BASE		0x48310000
 #define OMAP34XX_GPIO2_BASE		0x49050000
 #define OMAP34XX_GPIO3_BASE		0x49052000

arch/arm/include/asm/arch-omap4/gpio.h

@@ -40,6 +40,8 @@
 
 #include <asm/omap_gpio.h>
 
+#define OMAP_MAX_GPIO			192
+
 #define OMAP44XX_GPIO1_BASE		0x4A310000
 #define OMAP44XX_GPIO2_BASE		0x48055000
 #define OMAP44XX_GPIO3_BASE		0x48057000

arch/arm/include/asm/arch-omap5/gpio.h

@@ -40,11 +40,15 @@
 
 #include <asm/omap_gpio.h>
 
+#define OMAP_MAX_GPIO			256
+
 #define OMAP54XX_GPIO1_BASE		0x4Ae10000
 #define OMAP54XX_GPIO2_BASE		0x48055000
 #define OMAP54XX_GPIO3_BASE		0x48057000
 #define OMAP54XX_GPIO4_BASE		0x48059000
 #define OMAP54XX_GPIO5_BASE		0x4805B000
 #define OMAP54XX_GPIO6_BASE		0x4805D000
+#define OMAP54XX_GPIO7_BASE		0x48051000
+#define OMAP54XX_GPIO8_BASE		0x48053000
 
 #endif /* _GPIO_OMAP5_H */

drivers/gpio/omap_gpio.c

@@ -55,7 +55,7 @@ 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)