update for gpio

arch/arm/Kconfig

@@ -709,6 +709,7 @@ config ARCH_RK2818
 	select COMMON_CLKDEV
         select GENERIC_TIME
         select GENERIC_CLOCKEVENTS
+        select ARCH_REQUIRE_GPIOLIB
 	help
           Support for Rockchip RK2818 soc.
 

arch/arm/mach-rk2818/include/mach/irqs.h

@@ -42,7 +42,11 @@
 #define IRQ_REG_PLEVEL               0xd8//IRQ System Priority Level Register
 
 
-#define NR_IRQS         (48)
+/*<2A><><EFBFBD><EFBFBD>RK2818<31><38><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD>Ŀ<EFBFBD><C4BF>NR_AIC_IRQS<51><53>ʾRK2818<31><38><EFBFBD>жϼĴ<CFBC><C4B4><EFBFBD>֧<EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD>Ŀ<EFBFBD><C4BF>
+CONFIG_RK28_GPIO_IRQ<EFBFBD><EFBFBD>ʾRK2818<EFBFBD><EFBFBD>GPIO<EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD><EFBFBD>CONFIG_EXTEND_GPIO_IRQ<EFBFBD><EFBFBD>ʾRK2818<EFBFBD><EFBFBD>
+<EFBFBD><EFBFBD>չIO<EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD><EFBFBD>*/
+#define NR_AIC_IRQS 	48
+#define	NR_IRQS		(NR_AIC_IRQS + CONFIG_RK28_GPIO_IRQ + CONFIG_EXTEND_GPIO_IRQ)                                   
                                    
                                    
 /*irq number*/                                   

drivers/gpio/Kconfig

@@ -230,4 +230,19 @@ config GPIO_UCB1400
 	  To compile this driver as a module, choose M here: the
 	  module will be called ucb1400_gpio.
 
+config GPIO_TCA6424
+	bool "TCA6424 extend GPIO"
+	depends on I2C
+	help
+	  Say yes here to access the TCA6424 extend GPIO 
+
+config ARCH_EXTEND_GPIOS	  
+	int
+	default 24 if GPIO_TCA6424
+	default 0
+	
+config EXTEND_GPIO_IRQ
+	int
+	default 3 if GPIO_TCA6424	
+	default 0	
 endif