drivers/input/touchscreen/eeti_ts.c:65:2: error: implicit function

drivers/input/touchscreen/eeti_ts.c: In function 'eeti_ts_irq_active':
drivers/input/touchscreen/eeti_ts.c:65:2: error: implicit declaration of function 'irq_to_gpio'
make[3]: *** [drivers/input/touchscreen/eeti_ts.o] Error 1
make[2]: *** [drivers/input/touchscreen] Error 2
make[1]: *** [drivers/input] Error 2
make: *** [drivers] Error 2

方法：

更改的地方总共包括三个文件

arch/arm/mach-pxa/raumfeld.c        |    1 +
drivers/input/touchscreen/eeti_ts.c |    8 +++++---
 include/linux/input/eeti_ts.h       |    1 +

1、raumfeld.c

static struct eeti_ts_platform_data eeti_ts_pdata = {
  .irq_active_high = 1,
 .gpio = GPIO_TOUCH_IRQ,//添加
  };

2、/drivers/input/touchscreen/eeti_ts.c
 struct eeti_ts_priv {
 struct input_dev *input;
struct work_struct work;
 struct mutex mutex;
 int irq, irq_active_high;//删除
int irq, gpio, irq_active_high;//添加
 };
  static inline int eeti_ts_irq_active(struct eeti_ts_priv *priv)
 {
return gpio_get_value(irq_to_gpio(priv->irq)) == priv->irq_active_high;//删除
 return gpio_get_value(priv->gpio) == priv->irq_active_high;//添加
}
static int __devinit eeti_ts_probe(struct i2c_client *client,
 
  pdata = client->dev.platform_data;

下面两句

==========================================
 if (pdata)
  priv->irq_active_high = pdata->irq_active_high;

============================================
 替换为

==========================================
if (pdata) {
 priv->gpio = pdata->gpio;
priv->irq_active_high = pdata->irq_active_high;
}

===============================================

3、/include/linux/input/eeti_ts.h
  
  struct eeti_ts_platform_data {
  unsigned int irq_active_high;
  unsigned int gpio;//添加
  };