include/linux/i2c-pxa.h

   1 #ifndef _LINUX_I2C_ALGO_PXA_H
   2 #define _LINUX_I2C_ALGO_PXA_H
   3
   4 struct i2c_eeprom_emu_watcher {
   5         void (*write)(void *, unsigned int addr, unsigned char newval);
   6 };
   7
   8 struct i2c_eeprom_emu_watch {
   9         struct list_head node;
  10         unsigned int start;
  11         unsigned int end;
  12         struct i2c_eeprom_emu_watcher *ops;
  13         void *data;
  14 };
  15
  16 #define I2C_EEPROM_EMU_SIZE (256)
  17
  18 struct i2c_eeprom_emu {
  19         unsigned int size;
  20         unsigned int ptr;
  21         unsigned int seen_start;
  22         struct list_head watch;
  23
  24         unsigned char bytes[I2C_EEPROM_EMU_SIZE];
  25 };
  26
  27 typedef enum i2c_slave_event_e {
  28         I2C_SLAVE_EVENT_START_READ,
  29         I2C_SLAVE_EVENT_START_WRITE,
  30         I2C_SLAVE_EVENT_STOP
  31 } i2c_slave_event_t;
  32
  33 struct i2c_slave_client {
  34         void *data;
  35         void (*event)(void *ptr, i2c_slave_event_t event);
  36         int  (*read) (void *ptr);
  37         void (*write)(void *ptr, unsigned int val);
  38 };
  39
  40 extern int i2c_eeprom_emu_addwatcher(struct i2c_eeprom_emu *, void *data,
  41                                      unsigned int addr, unsigned int size,
  42                                      struct i2c_eeprom_emu_watcher *);
  43
  44 extern void i2c_eeprom_emu_delwatcher(struct i2c_eeprom_emu *, void *data, struct i2c_eeprom_emu_watcher *watcher);
  45
  46 extern struct i2c_eeprom_emu *i2c_pxa_get_eeprom(void);
  47
  48 #endif /* _LINUX_I2C_ALGO_PXA_H */