40 lines · c
1/* SPDX-License-Identifier: MIT */2#ifndef __NVKM_I2C_BUS_H__3#define __NVKM_I2C_BUS_H__4#include "pad.h"5 6struct nvkm_i2c_bus_func {7 void (*init)(struct nvkm_i2c_bus *);8 void (*drive_scl)(struct nvkm_i2c_bus *, int state);9 void (*drive_sda)(struct nvkm_i2c_bus *, int state);10 int (*sense_scl)(struct nvkm_i2c_bus *);11 int (*sense_sda)(struct nvkm_i2c_bus *);12 int (*xfer)(struct nvkm_i2c_bus *, struct i2c_msg *, int num);13};14 15int nvkm_i2c_bus_ctor(const struct nvkm_i2c_bus_func *, struct nvkm_i2c_pad *,16 int id, struct nvkm_i2c_bus *);17int nvkm_i2c_bus_new_(const struct nvkm_i2c_bus_func *, struct nvkm_i2c_pad *,18 int id, struct nvkm_i2c_bus **);19void nvkm_i2c_bus_del(struct nvkm_i2c_bus **);20void nvkm_i2c_bus_init(struct nvkm_i2c_bus *);21void nvkm_i2c_bus_fini(struct nvkm_i2c_bus *);22 23int nvkm_i2c_bit_xfer(struct nvkm_i2c_bus *, struct i2c_msg *, int);24 25int nv04_i2c_bus_new(struct nvkm_i2c_pad *, int, u8, u8,26 struct nvkm_i2c_bus **);27 28int nv4e_i2c_bus_new(struct nvkm_i2c_pad *, int, u8, struct nvkm_i2c_bus **);29int nv50_i2c_bus_new(struct nvkm_i2c_pad *, int, u8, struct nvkm_i2c_bus **);30int gf119_i2c_bus_new(struct nvkm_i2c_pad *, int, u8, struct nvkm_i2c_bus **);31 32#define BUS_MSG(b,l,f,a...) do { \33 struct nvkm_i2c_bus *_bus = (b); \34 nvkm_##l(&_bus->pad->i2c->subdev, "bus %04x: "f"\n", _bus->id, ##a); \35} while(0)36#define BUS_ERR(b,f,a...) BUS_MSG((b), error, f, ##a)37#define BUS_DBG(b,f,a...) BUS_MSG((b), debug, f, ##a)38#define BUS_TRACE(b,f,a...) BUS_MSG((b), trace, f, ##a)39#endif40