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
  14 struct 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
  25 struct 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
  41 struct 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
  57 struct 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
  72 static 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
  81 static 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
  88 static 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
  93 static 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
 101 void svga_wcrt_multi(const struct vga_regset *regset, u32 value);
 102 void svga_wseq_multi(const struct vga_regset *regset, u32 value);
 103
 104 void svga_set_default_gfx_regs(void);
 105 void svga_set_default_atc_regs(void);
 106 void svga_set_default_seq_regs(void);
 107 void svga_set_default_crt_regs(void);
 108 void svga_set_textmode_vga_regs(void);
 109
 110 void svga_settile(struct fb_info *info, struct fb_tilemap *map);
 111 void svga_tilecopy(struct fb_info *info, struct fb_tilearea *area);
 112 void svga_tilefill(struct fb_info *info, struct fb_tilerect *rect);
 113 void svga_tileblit(struct fb_info *info, struct fb_tileblit *blit);
 114 void svga_tilecursor(struct fb_info *info, struct fb_tilecursor *cursor);
 115
 116 int svga_compute_pll(const struct svga_pll *pll, u32 f_wanted, u16 *m, u16 *n, u16 *r, int node);
 117 int svga_check_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, int node);
 118 void 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
 120 int 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