1 /* SPDX-License-Identifier: MIT */ 2 #ifndef __NVKM_I2C_BUS_H__ 3 #define __NVKM_I2C_BUS_H__ 4 #include "pad.h" 5 6 struct 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 15 int nvkm_i2c_bus_ctor(const struct nvkm_i2c_bus_func *, struct nvkm_i2c_pad *, 16 int id, struct nvkm_i2c_bus *); 17 int nvkm_i2c_bus_new_(const struct nvkm_i2c_bus_func *, struct nvkm_i2c_pad *, 18 int id, struct nvkm_i2c_bus **); 19 void nvkm_i2c_bus_del(struct nvkm_i2c_bus **); 20 void nvkm_i2c_bus_init(struct nvkm_i2c_bus *); 21 void nvkm_i2c_bus_fini(struct nvkm_i2c_bus *); 22 23 int nvkm_i2c_bit_xfer(struct nvkm_i2c_bus *, struct i2c_msg *, int); 24 25 int nv04_i2c_bus_new(struct nvkm_i2c_pad *, int, u8, u8, 26 struct nvkm_i2c_bus **); 27 28 int nv4e_i2c_bus_new(struct nvkm_i2c_pad *, int, u8, struct nvkm_i2c_bus **); 29 int nv50_i2c_bus_new(struct nvkm_i2c_pad *, int, u8, struct nvkm_i2c_bus **); 30 int 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 40