src/include/device/smbus.h

   1 #ifndef DEVICE_SMBUS_H
   2 #define DEVICE_SMBUS_H
   3
   4 #include <stdint.h>
   5 #include <device/device.h>
   6 #include <device/path.h>
   7 #include <device/smbus_def.h>
   8
   9 /* Common SMBus bus operations */
  10 struct smbus_bus_operations {
  11         int (*quick_read)  (device_t dev);
  12         int (*quick_write) (device_t dev);
  13         int (*recv_byte)   (device_t dev);
  14         int (*send_byte)   (device_t dev, u8 value);
  15         int (*read_byte)   (device_t dev, u8 addr);
  16         int (*write_byte)  (device_t dev, u8 addr, u8 value);
  17         int (*read_word)   (device_t dev, u8 addr);
  18         int (*write_word)  (device_t dev, u8 addr, u16 value);
  19         int (*process_call)(device_t dev, u8 cmd, u16 data);
  20         int (*block_read)  (device_t dev, u8 cmd, u8 bytes, u8 *buffer);
  21         int (*block_write) (device_t dev, u8 cmd, u8 bytes, const u8 *buffer);
  22 };
  23
  24 static inline const struct smbus_bus_operations *ops_smbus_bus(struct bus *bus)
  25 {
  26         const struct smbus_bus_operations *bops;
  27
  28         bops = 0;
  29         if (bus && bus->dev && bus->dev->ops)
  30                 bops = bus->dev->ops->ops_smbus_bus;
  31
  32         return bops;
  33 }
  34
  35 struct bus *get_pbus_smbus(device_t dev);
  36 int smbus_set_link(device_t dev);
  37
  38 int smbus_quick_read(device_t dev);
  39 int smbus_quick_write(device_t dev);
  40 int smbus_recv_byte(device_t dev);
  41 int smbus_send_byte(device_t dev, u8 byte);
  42 int smbus_read_byte(device_t dev, u8 addr);
  43 int smbus_write_byte(device_t dev, u8 addr, u8 val);
  44 int smbus_read_word(device_t dev, u8 addr);
  45 int smbus_write_word(device_t dev, u8 addr, u16 val);
  46 int smbus_process_call(device_t dev, u8 cmd, u16 data);
  47 int smbus_block_read(device_t dev, u8 cmd, u8 bytes, u8 *buffer);
  48 int smbus_block_write(device_t dev, u8 cmd, u8 bytes, const u8 *buffer);
  49
  50 #endif /* DEVICE_SMBUS_H */