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ams.h

#include <linux/i2c.h>
#include <linux/input-polldev.h>
#include <linux/kthread.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <asm/of_device.h>

enum ams_irq {
      AMS_IRQ_FREEFALL = 0x01,
      AMS_IRQ_SHOCK = 0x02,
      AMS_IRQ_GLOBAL = 0x04,
      AMS_IRQ_ALL =
            AMS_IRQ_FREEFALL |
            AMS_IRQ_SHOCK |
            AMS_IRQ_GLOBAL,
};

struct ams {
      /* Locks */
      spinlock_t irq_lock;
      struct mutex lock;

      /* General properties */
      struct device_node *of_node;
      struct of_device *of_dev;
      char has_device;
      char vflag;
      u32 orient1;
      u32 orient2;

      /* Interrupt worker */
      struct work_struct worker;
      u8 worker_irqs;

      /* Implementation
       *
       * Only call these functions with the main lock held.
       */
      void (*exit)(void);

      void (*get_xyz)(s8 *x, s8 *y, s8 *z);
      u8 (*get_vendor)(void);

      void (*clear_irq)(enum ams_irq reg);

#ifdef CONFIG_SENSORS_AMS_I2C
      /* I2C properties */
      int i2c_bus;
      int i2c_address;
      struct i2c_client i2c_client;
#endif

      /* Joystick emulation */
      struct input_polled_dev *idev;
      __u16 bustype;

      /* calibrated null values */
      int xcalib, ycalib, zcalib;
};

extern struct ams ams_info;

extern void ams_sensors(s8 *x, s8 *y, s8 *z);
extern int ams_sensor_attach(void);

extern int ams_pmu_init(struct device_node *np);
extern int ams_i2c_init(struct device_node *np);

extern int ams_input_init(void);
extern void ams_input_exit(void);

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