LXR linux/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/bus.h

   1#ifndef __NVKM_I2C_BUS_H__
   2#define __NVKM_I2C_BUS_H__
   3#include "pad.h"
   4
   5struct nvkm_i2c_bus_func {
   6        void (*init)(struct nvkm_i2c_bus *);
   7        void (*drive_scl)(struct nvkm_i2c_bus *, int state);
   8        void (*drive_sda)(struct nvkm_i2c_bus *, int state);
   9        int (*sense_scl)(struct nvkm_i2c_bus *);
  10        int (*sense_sda)(struct nvkm_i2c_bus *);
  11        int (*xfer)(struct nvkm_i2c_bus *, struct i2c_msg *, int num);
  12};
  13
  14int nvkm_i2c_bus_ctor(const struct nvkm_i2c_bus_func *, struct nvkm_i2c_pad *,
  15                      int id, struct nvkm_i2c_bus *);
  16int nvkm_i2c_bus_new_(const struct nvkm_i2c_bus_func *, struct nvkm_i2c_pad *,
  17                      int id, struct nvkm_i2c_bus **);
  18void nvkm_i2c_bus_del(struct nvkm_i2c_bus **);
  19void nvkm_i2c_bus_init(struct nvkm_i2c_bus *);
  20
  21int nvkm_i2c_bit_xfer(struct nvkm_i2c_bus *, struct i2c_msg *, int);
  22
  23int nv04_i2c_bus_new(struct nvkm_i2c_pad *, int, u8, u8,
  24                     struct nvkm_i2c_bus **);
  25
  26int nv4e_i2c_bus_new(struct nvkm_i2c_pad *, int, u8, struct nvkm_i2c_bus **);
  27int nv50_i2c_bus_new(struct nvkm_i2c_pad *, int, u8, struct nvkm_i2c_bus **);
  28int gf119_i2c_bus_new(struct nvkm_i2c_pad *, int, u8, struct nvkm_i2c_bus **);
  29
  30#define BUS_MSG(b,l,f,a...) do {                                               \
  31        struct nvkm_i2c_bus *_bus = (b);                                       \
  32        nvkm_##l(&_bus->pad->i2c->subdev, "bus %04x: "f"\n", _bus->id, ##a);   \
  33} while(0)
  34#define BUS_ERR(b,f,a...) BUS_MSG((b), error, f, ##a)
  35#define BUS_DBG(b,f,a...) BUS_MSG((b), debug, f, ##a)
  36#define BUS_TRACE(b,f,a...) BUS_MSG((b), trace, f, ##a)
  37#endif
  38