i2c.h

 1/* SPDX-License-Identifier: MIT */
 2#ifndef __NVBIOS_I2C_H__
 3#define __NVBIOS_I2C_H__
 4enum dcb_i2c_type {
 5	/* matches bios type field prior to ccb 4.1 */
 6	DCB_I2C_NV04_BIT = 0x00,
 7	DCB_I2C_NV4E_BIT = 0x04,
 8	DCB_I2C_NVIO_BIT = 0x05,
 9	DCB_I2C_NVIO_AUX = 0x06,
10	/* made up - mostly */
11	DCB_I2C_PMGR     = 0x80,
12	DCB_I2C_UNUSED   = 0xff
13};
14
15struct dcb_i2c_entry {
16	enum dcb_i2c_type type;
17	u8 drive;
18	u8 sense;
19	u8 share;
20	u8 auxch;
21};
22
23u16 dcb_i2c_table(struct nvkm_bios *, u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
24u16 dcb_i2c_entry(struct nvkm_bios *, u8 index, u8 *ver, u8 *len);
25int dcb_i2c_parse(struct nvkm_bios *, u8 index, struct dcb_i2c_entry *);
26#endif