1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright © 2019 Intel Corporation
4 */
5
6#ifndef __INTEL_GMBUS_H__
7#define __INTEL_GMBUS_H__
8
9#include <linux/types.h>
10
11struct i2c_adapter;
12struct intel_display;
13
14#define GMBUS_PIN_DISABLED 0
15#define GMBUS_PIN_SSC 1
16#define GMBUS_PIN_VGADDC 2
17#define GMBUS_PIN_PANEL 3
18#define GMBUS_PIN_DPD_CHV 3 /* HDMID_CHV */
19#define GMBUS_PIN_DPC 4 /* HDMIC */
20#define GMBUS_PIN_DPB 5 /* SDVO, HDMIB */
21#define GMBUS_PIN_DPD 6 /* HDMID */
22#define GMBUS_PIN_RESERVED 7 /* 7 reserved */
23#define GMBUS_PIN_1_BXT 1 /* BXT+ (atom) and CNP+ (big core) */
24#define GMBUS_PIN_2_BXT 2
25#define GMBUS_PIN_3_BXT 3
26#define GMBUS_PIN_4_CNP 4
27#define GMBUS_PIN_5_MTP 5
28#define GMBUS_PIN_9_TC1_ICP 9
29#define GMBUS_PIN_10_TC2_ICP 10
30#define GMBUS_PIN_11_TC3_ICP 11
31#define GMBUS_PIN_12_TC4_ICP 12
32#define GMBUS_PIN_13_TC5_TGP 13
33#define GMBUS_PIN_14_TC6_TGP 14
34
35#define GMBUS_NUM_PINS 15 /* including 0 */
36
37int intel_gmbus_setup(struct intel_display *display);
38void intel_gmbus_teardown(struct intel_display *display);
39bool intel_gmbus_is_valid_pin(struct intel_display *display, unsigned int pin);
40int intel_gmbus_output_aksv(struct i2c_adapter *adapter);
41
42struct i2c_adapter *
43intel_gmbus_get_adapter(struct intel_display *display, unsigned int pin);
44void intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit);
45bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter);
46void intel_gmbus_reset(struct intel_display *display);
47
48void intel_gmbus_irq_handler(struct intel_display *display);
49
50#endif /* __INTEL_GMBUS_H__ */
51