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 --- 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)