ams.h

Go to the documentation of this file.

#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 <linux/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 platform_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 */
    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 void ams_sensor_detach(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);