1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __RIVAFB_H
3#define __RIVAFB_H
4
5#include <linux/fb.h>
6#include <video/vga.h>
7#include <linux/i2c.h>
8#include <linux/i2c-algo-bit.h>
9
10#include "riva_hw.h"
11
12/* GGI compatibility macros */
13#define NUM_SEQ_REGS		0x05
14#define NUM_CRT_REGS		0x41
15#define NUM_GRC_REGS		0x09
16#define NUM_ATC_REGS		0x15
17
18/* I2C */
19#define DDC_SCL_READ_MASK       (1 << 2)
20#define DDC_SCL_WRITE_MASK      (1 << 5)
21#define DDC_SDA_READ_MASK       (1 << 3)
22#define DDC_SDA_WRITE_MASK      (1 << 4)
23
24/* holds the state of the VGA core and extended Riva hw state from riva_hw.c.
25 * From KGI originally. */
26struct riva_regs {
27	u8 attr[NUM_ATC_REGS];
28	u8 crtc[NUM_CRT_REGS];
29	u8 gra[NUM_GRC_REGS];
30	u8 seq[NUM_SEQ_REGS];
31	u8 misc_output;
32	RIVA_HW_STATE ext;
33};
34
35struct riva_par;
36
37struct riva_i2c_chan {
38	struct riva_par *par;
39	unsigned long   ddc_base;
40	struct i2c_adapter adapter;
41	struct i2c_algo_bit_data algo;
42};
43
44struct riva_par {
45	RIVA_HW_INST riva;	/* interface to riva_hw.c */
46	u32 pseudo_palette[16]; /* default palette */
47	u32 palette[16];        /* for Riva128 */
48	u8 __iomem *ctrl_base;	/* virtual control register base addr */
49	unsigned dclk_max;	/* max DCLK */
50
51	struct riva_regs initial_state;	/* initial startup video mode */
52	struct riva_regs current_state;
53#ifdef CONFIG_X86
54	struct vgastate state;
55#endif
56	struct mutex open_lock;
57	unsigned int ref_count;
58	unsigned char *EDID;
59	unsigned int Chipset;
60	int forceCRTC;
61	Bool SecondCRTC;
62	int FlatPanel;
63	struct pci_dev *pdev;
64	int cursor_reset;
65	int wc_cookie;
66	struct riva_i2c_chan chan[3];
67};
68
69void riva_common_setup(struct riva_par *);
70unsigned long riva_get_memlen(struct riva_par *);
71unsigned long riva_get_maxdclk(struct riva_par *);
72void riva_delete_i2c_busses(struct riva_par *par);
73void riva_create_i2c_busses(struct riva_par *par);
74int riva_probe_i2c_connector(struct riva_par *par, int conn, u8 **out_edid);
75
76#endif /* __RIVAFB_H */
77