LXR linux/include/linux/svga.h

   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);
 115int svga_get_tilemax(struct fb_info *info);
 116void svga_get_caps(struct fb_info *info, struct fb_blit_caps *caps,
 117                   struct fb_var_screeninfo *var);
 118
 119int svga_compute_pll(const struct svga_pll *pll, u32 f_wanted, u16 *m, u16 *n, u16 *r, int node);
 120int svga_check_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, int node);
 121void 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);
 122
 123int svga_match_format(const struct svga_fb_format *frm, struct fb_var_screeninfo *var, struct fb_fix_screeninfo *fix);
 124
 125#endif /* __KERNEL__  */
 126#endif /* _LINUX_SVGA_H */
 127
 128