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svga.h
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1 #ifndef _LINUX_SVGA_H
2 #define _LINUX_SVGA_H
3 
4 #include <linux/pci.h>
5 #include <video/vga.h>
6 
7 /* Terminator for register set */
8 
9 #define VGA_REGSET_END_VAL 0xFF
10 #define VGA_REGSET_END {VGA_REGSET_END_VAL, 0, 0}
11 
12 struct vga_regset {
16 };
17 
18 /* ------------------------------------------------------------------------- */
19 
20 #define SVGA_FORMAT_END_VAL 0xFFFF
21 #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}
22 
24  /* var part */
26  struct fb_bitfield red;
28  struct fb_bitfield blue;
31  /* fix part */
37 };
38 
40  const struct vga_regset *h_total_regs;
41  const struct vga_regset *h_display_regs;
45  const struct vga_regset *h_sync_end_regs;
46 
47  const struct vga_regset *v_total_regs;
48  const struct vga_regset *v_display_regs;
52  const struct vga_regset *v_sync_end_regs;
53 };
54 
55 struct svga_pll {
61  u16 r_max; /* r_max < 32 */
65 };
66 
67 
68 /* Write a value to the attribute register */
69 
70 static inline void svga_wattr(void __iomem *regbase, u8 index, u8 data)
71 {
72  vga_r(regbase, VGA_IS1_RC);
73  vga_w(regbase, VGA_ATT_IW, index);
74  vga_w(regbase, VGA_ATT_W, data);
75 }
76 
77 /* Write a value to a sequence register with a mask */
78 
79 static inline void svga_wseq_mask(void __iomem *regbase, u8 index, u8 data, u8 mask)
80 {
81  vga_wseq(regbase, index, (data & mask) | (vga_rseq(regbase, index) & ~mask));
82 }
83 
84 /* Write a value to a CRT register with a mask */
85 
86 static inline void svga_wcrt_mask(void __iomem *regbase, u8 index, u8 data, u8 mask)
87 {
88  vga_wcrt(regbase, index, (data & mask) | (vga_rcrt(regbase, index) & ~mask));
89 }
90 
91 static inline int svga_primary_device(struct pci_dev *dev)
92 {
93  u16 flags;
94  pci_read_config_word(dev, PCI_COMMAND, &flags);
95  return (flags & PCI_COMMAND_IO);
96 }
97 
98 
99 void svga_wcrt_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value);
100 void svga_wseq_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value);
101 
102 void svga_set_default_gfx_regs(void __iomem *regbase);
103 void svga_set_default_atc_regs(void __iomem *regbase);
104 void svga_set_default_seq_regs(void __iomem *regbase);
105 void svga_set_default_crt_regs(void __iomem *regbase);
106 void svga_set_textmode_vga_regs(void __iomem *regbase);
107 
108 void svga_settile(struct fb_info *info, struct fb_tilemap *map);
109 void svga_tilecopy(struct fb_info *info, struct fb_tilearea *area);
110 void svga_tilefill(struct fb_info *info, struct fb_tilerect *rect);
111 void svga_tileblit(struct fb_info *info, struct fb_tileblit *blit);
112 void svga_tilecursor(void __iomem *regbase, struct fb_info *info, struct fb_tilecursor *cursor);
113 int svga_get_tilemax(struct fb_info *info);
114 void svga_get_caps(struct fb_info *info, struct fb_blit_caps *caps,
115  struct fb_var_screeninfo *var);
116 
117 int svga_compute_pll(const struct svga_pll *pll, u32 f_wanted, u16 *m, u16 *n, u16 *r, int node);
118 int svga_check_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, int node);
119 void svga_set_timings(void __iomem *regbase, const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, u32 hmul, u32 hdiv, u32 vmul, u32 vdiv, u32 hborder, int node);
120 
121 int svga_match_format(const struct svga_fb_format *frm, struct fb_var_screeninfo *var, struct fb_fix_screeninfo *fix);
122 
123 #endif /* _LINUX_SVGA_H */
124