[U-Boot] [PATCH] ARM: OMAP: GPIO: Fix valid range and enable usage of all GPIOs on OMAP5

[Axel Lin]

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 at ingics.com>
---
This patch supersedes below patches:

[PATCH v3 1/2] gpio: omap_gpio: Fix valid gpio range for AM33XX [1]
[PATCH v3 2/2] gpio: omap_gpio: Fix valid GPIO range for OMAP5 [2]
[PATCH 1/2] OMAP5: Fix gpio_bank_54xx setting [3]
[PATCH 2/2] OMAP: gpio: Introduce get_omap_gpio_count() function to get gpio count [4]

[1] http://lists.denx.de/pipermail/u-boot/2013-June/156980.html
[2] http://lists.denx.de/pipermail/u-boot/2013-June/156981.html
[3] http://lists.denx.de/pipermail/u-boot/2013-June/156984.html
[4] http://lists.denx.de/pipermail/u-boot/2013-June/156985.html

Regards,
Axel
 arch/arm/cpu/armv7/omap5/hw_data.c      | 2 ++
 arch/arm/cpu/armv7/omap5/hwinit.c       | 4 +++-
 arch/arm/include/asm/arch-am33xx/gpio.h | 2 ++
 arch/arm/include/asm/arch-omap3/gpio.h  | 2 ++
 arch/arm/include/asm/arch-omap4/gpio.h  | 2 ++
 arch/arm/include/asm/arch-omap5/gpio.h  | 4 ++++
 drivers/gpio/omap_gpio.c                | 2 +-
 7 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/arch/arm/cpu/armv7/omap5/hw_data.c b/arch/arm/cpu/armv7/omap5/hw_data.c
index 56cf1f8..07b1108 100644
--- a/arch/arm/cpu/armv7/omap5/hw_data.c
+++ b/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
 	};
 
diff --git a/arch/arm/cpu/armv7/omap5/hwinit.c b/arch/arm/cpu/armv7/omap5/hwinit.c
index daf124e..11ba36b 100644
--- a/arch/arm/cpu/armv7/omap5/hwinit.c
+++ b/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;
diff --git a/arch/arm/include/asm/arch-am33xx/gpio.h b/arch/arm/include/asm/arch-am33xx/gpio.h
index 1a211e9..8346979 100644
--- a/arch/arm/include/asm/arch-am33xx/gpio.h
+++ b/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
diff --git a/arch/arm/include/asm/arch-omap3/gpio.h b/arch/arm/include/asm/arch-omap3/gpio.h
index 8bba3b0..d72f5e5 100644
--- a/arch/arm/include/asm/arch-omap3/gpio.h
+++ b/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
diff --git a/arch/arm/include/asm/arch-omap4/gpio.h b/arch/arm/include/asm/arch-omap4/gpio.h
index 26f19d1..fdf65ed 100644
--- a/arch/arm/include/asm/arch-omap4/gpio.h
+++ b/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
diff --git a/arch/arm/include/asm/arch-omap5/gpio.h b/arch/arm/include/asm/arch-omap5/gpio.h
index c14dff0..7c82f90 100644
--- a/arch/arm/include/asm/arch-omap5/gpio.h
+++ b/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 */
diff --git a/drivers/gpio/omap_gpio.c b/drivers/gpio/omap_gpio.c
index a30d7f0..f16e9ae 100644
--- a/drivers/gpio/omap_gpio.c
+++ b/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)
-- 
1.8.1.2