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authorOndrej Zajicek <santiago@crfreenet.org>2007-02-12 03:54:49 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-12 12:48:41 -0500
commita268422de8bf1b4c0cb97987b6c329c9f6a3da4b (patch)
tree521e88fddb250dc193893c07bd889b5a28b7ded5 /include/linux/svga.h
parent59ae6c6b87711ceb2d1ea5f9e08bb13aee947a29 (diff)
[PATCH] fbdev driver for S3 Trio/Virge
Add a driver for S3 Trio / S3 Virge. Driver is tested with most versions of S3 Trio and with S3 Virge/DX, on i386. (akpm: We kind-of have support for this hardware already, but... virgefb.c - amiga/zorro specific, - broken (according to Kconfig), - uses obsolete/nonexistent interface (struct display_switch) - recent Adrian Bunk's patch removes this driver S3triofb.c - ppc/openfirmware specific - minimal functionality - broken (according to Kconfig), - uses obsolete/nonexistent interface (struct display_switch) ) Signed-off-by: Ondrej Zajicek <santiago@crfreenet.org> Cc: James Simmons <jsimmons@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/svga.h')
-rw-r--r--include/linux/svga.h124
1 files changed, 124 insertions, 0 deletions
diff --git a/include/linux/svga.h b/include/linux/svga.h
new file mode 100644
index 000000000000..eadb981bb37c
--- /dev/null
+++ b/include/linux/svga.h
@@ -0,0 +1,124 @@
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