Davinci: gpio - controller type support

This patch allows for gpio controllers that deviate from those found on
traditional davinci socs.  davinci_soc_info has an added field to indicate the
soc-specific gpio controller type.  The gpio initialization code then bails
out if necessary.

More elements (tnetv107x) to be added later into enum davinci_gpio_type.

Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Tested-by: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

2 files changed, 5 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/include/mach/common.h b/arch/arm/mach-davinci/include/mach/common.h
index 1d72883f593e..8ffef5bbd9cf 100644
--- a/arch/arm/mach-davinci/include/mach/common.h
+++ b/arch/arm/mach-davinci/include/mach/common.h
@@ -59,6 +59,7 @@ struct davinci_soc_info {
         u8                              *intc_irq_prios;
         unsigned long                   intc_irq_num;
         struct davinci_timer_info       *timer_info;
+        int                             gpio_type;
         void __iomem                    *gpio_base;
         unsigned                        gpio_num;
         unsigned                        gpio_irq;
diff --git a/arch/arm/mach-davinci/include/mach/gpio.h b/arch/arm/mach-davinci/include/mach/gpio.h
index 82591d0d48fb..9a71a26eb77f 100644
--- a/arch/arm/mach-davinci/include/mach/gpio.h
+++ b/arch/arm/mach-davinci/include/mach/gpio.h
@@ -21,6 +21,10 @@
 
 #define DAVINCI_GPIO_BASE 0x01C67000
 
+enum davinci_gpio_type {
+        GPIO_TYPE_DAVINCI = 0,
+};
+
 /*
  * basic gpio routines
  *