bus.h

 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#endif