svga.h revision a268422de8bf1b4c0cb97987b6c329c9f6a3da4b 
1#ifndef _LINUX_SVGA_H
2#define _LINUX_SVGA_H
3
4#ifdef __KERNEL__
5
6#include <linux/pci.h>
7#include <video/vga.h>
8
9/* Terminator for register set */
10
11#define VGA_REGSET_END_VAL	0xFF
12#define VGA_REGSET_END		{VGA_REGSET_END_VAL, 0, 0}
13
14struct vga_regset {
15	u8 regnum;
16	u8 lowbit;
17	u8 highbit;
18};
19
20/* ------------------------------------------------------------------------- */
21
22#define SVGA_FORMAT_END_VAL	0xFFFF
23#define SVGA_FORMAT_END		{SVGA_FORMAT_END_VAL, {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, 0, 0, 0, 0, 0, 0}
24
25struct svga_fb_format {
26	/* var part */
27	u32 bits_per_pixel;
28	struct fb_bitfield red;
29	struct fb_bitfield green;
30	struct fb_bitfield blue;
31	struct fb_bitfield transp;
32	u32 nonstd;
33	/* fix part */
34	u32 type;
35	u32 type_aux;
36	u32 visual;
37	u32 xpanstep;
38	u32 xresstep;
39};
40
41struct svga_timing_regs {
42	const struct vga_regset *h_total_regs;
43	const struct vga_regset *h_display_regs;
44	const struct vga_regset *h_blank_start_regs;
45	const struct vga_regset *h_blank_end_regs;
46	const struct vga_regset *h_sync_start_regs;
47	const struct vga_regset *h_sync_end_regs;
48
49	const struct vga_regset *v_total_regs;
50	const struct vga_regset *v_display_regs;
51	const struct vga_regset *v_blank_start_regs;
52	const struct vga_regset *v_blank_end_regs;
53	const struct vga_regset *v_sync_start_regs;
54	const struct vga_regset *v_sync_end_regs;
55};
56
57struct svga_pll {
58	u16 m_min;
59	u16 m_max;
60	u16 n_min;
61	u16 n_max;
62	u16 r_min;
63	u16 r_max;  /* r_max < 32 */
64	u32 f_vco_min;
65	u32 f_vco_max;
66	u32 f_base;
67};
68
69
70/* Write a value to the attribute register */
71
72static inline void svga_wattr(u8 index, u8 data)
73{
74	inb(0x3DA);
75	outb(index, 0x3C0);
76	outb(data, 0x3C0);
77}
78
79/* Write a value to a sequence register with a mask */
80
81static inline void svga_wseq_mask(u8 index, u8 data, u8 mask)
82{
83	vga_wseq(NULL, index, (data & mask) | (vga_rseq(NULL, index) & ~mask));
84}
85
86/* Write a value to a CRT register with a mask */
87
88static inline void svga_wcrt_mask(u8 index, u8 data, u8 mask)
89{
90	vga_wcrt(NULL, index, (data & mask) | (vga_rcrt(NULL, index) & ~mask));
91}
92
93static inline int svga_primary_device(struct pci_dev *dev)
94{
95	u16 flags;
96	pci_read_config_word(dev, PCI_COMMAND, &flags);
97	return (flags & PCI_COMMAND_IO);
98}
99
100
101void svga_wcrt_multi(const struct vga_regset *regset, u32 value);
102void svga_wseq_multi(const struct vga_regset *regset, u32 value);
103
104void svga_set_default_gfx_regs(void);
105void svga_set_default_atc_regs(void);
106void svga_set_default_seq_regs(void);
107void svga_set_default_crt_regs(void);
108void svga_set_textmode_vga_regs(void);
109
110void svga_settile(struct fb_info *info, struct fb_tilemap *map);
111void svga_tilecopy(struct fb_info *info, struct fb_tilearea *area);
112void svga_tilefill(struct fb_info *info, struct fb_tilerect *rect);
113void svga_tileblit(struct fb_info *info, struct fb_tileblit *blit);
114void svga_tilecursor(struct fb_info *info, struct fb_tilecursor *cursor);
115
116int svga_compute_pll(const struct svga_pll *pll, u32 f_wanted, u16 *m, u16 *n, u16 *r, int node);
117int svga_check_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, int node);
118void svga_set_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, u32 hmul, u32 hdiv, u32 vmul, u32 vdiv, u32 hborder, int node);
119
120int svga_match_format(const struct svga_fb_format *frm, struct fb_var_screeninfo *var, struct fb_fix_screeninfo *fix);
121
122#endif /* __KERNEL__  */
123#endif /* _LINUX_SVGA_H */
124
125