rk30:modify goodix touch screen initialize

diff --git a/arch/arm/mach-rk30/board-rk30-sdk.c b/arch/arm/mach-rk30/board-rk30-sdk.c
index c28a73f872999d1e77c0b1878fd8ec7c2054f2ed..fb043c2f1c32d58b22f29d0ba3521fe02594a120 100755 (executable)
--- a/arch/arm/mach-rk30/board-rk30-sdk.c
+++ b/arch/arm/mach-rk30/board-rk30-sdk.c
@@ -59,26 +59,33 @@ int goodix_init_platform_hw(void)
 {
        int ret;
        printk("goodix_init_platform_hw\n");
-       ret = gpio_request(TOUCH_PWR_PIN, "goodix power pin");
-       if(ret != 0){
-               gpio_free(TOUCH_PWR_PIN);
-               printk("goodix power error\n");
-               return -EIO;
+       if(TOUCH_PWR_PIN != INVALID_GPIO)
+       {
+               ret = gpio_request(TOUCH_PWR_PIN, "goodix power pin");
+               if(ret != 0){
+                       gpio_free(TOUCH_PWR_PIN);
+                       printk("goodix power error\n");
+                       return -EIO;
+               }
+               gpio_direction_output(TOUCH_PWR_PIN, 0);
+               gpio_set_value(TOUCH_PWR_PIN,GPIO_LOW);
+               msleep(100);
        }
-       gpio_direction_output(TOUCH_PWR_PIN, 0);
-       gpio_set_value(TOUCH_PWR_PIN,GPIO_LOW);
-       msleep(100);
-       ret = gpio_request(TOUCH_RESET_PIN, "goodix reset pin");
-       if(ret != 0){
-               gpio_free(TOUCH_RESET_PIN);
-               printk("goodix gpio_request error\n");
-               return -EIO;
+       
+       if(TOUCH_RESET_PIN != INVALID_GPIO)
+       {
+               ret = gpio_request(TOUCH_RESET_PIN, "goodix reset pin");
+               if(ret != 0){
+                       gpio_free(TOUCH_RESET_PIN);
+                       printk("goodix gpio_request error\n");
+                       return -EIO;
+               }
+               gpio_direction_output(TOUCH_RESET_PIN, 0);
+               gpio_set_value(TOUCH_RESET_PIN,GPIO_LOW);
+               msleep(10);
+               gpio_set_value(TOUCH_RESET_PIN,GPIO_HIGH);
+               msleep(500);
        }
-       gpio_direction_output(TOUCH_RESET_PIN, 0);
-       gpio_set_value(TOUCH_RESET_PIN,GPIO_LOW);
-       msleep(10);
-       gpio_set_value(TOUCH_RESET_PIN,GPIO_HIGH);
-       msleep(500);
        return 0;
 }