diff options
Diffstat (limited to 'include/linux/svga.h')
| -rw-r--r-- | include/linux/svga.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/include/linux/svga.h b/include/linux/svga.h new file mode 100644 index 000000000..bfa68e837 --- /dev/null +++ b/include/linux/svga.h @@ -0,0 +1,124 @@ +#ifndef _LINUX_SVGA_H +#define _LINUX_SVGA_H + +#include <linux/pci.h> +#include <video/vga.h> + +/* Terminator for register set */ + +#define VGA_REGSET_END_VAL 0xFF +#define VGA_REGSET_END {VGA_REGSET_END_VAL, 0, 0} + +struct vga_regset { + u8 regnum; + u8 lowbit; + u8 highbit; +}; + +/* ------------------------------------------------------------------------- */ + +#define SVGA_FORMAT_END_VAL 0xFFFF +#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} + +struct svga_fb_format { + /* var part */ + u32 bits_per_pixel; + struct fb_bitfield red; + struct fb_bitfield green; + struct fb_bitfield blue; + struct fb_bitfield transp; + u32 nonstd; + /* fix part */ + u32 type; + u32 type_aux; + u32 visual; + u32 xpanstep; + u32 xresstep; +}; + +struct svga_timing_regs { + const struct vga_regset *h_total_regs; + const struct vga_regset *h_display_regs; + const struct vga_regset *h_blank_start_regs; + const struct vga_regset *h_blank_end_regs; + const struct vga_regset *h_sync_start_regs; + const struct vga_regset *h_sync_end_regs; + + const struct vga_regset *v_total_regs; + const struct vga_regset *v_display_regs; + const struct vga_regset *v_blank_start_regs; + const struct vga_regset *v_blank_end_regs; + const struct vga_regset *v_sync_start_regs; + const struct vga_regset *v_sync_end_regs; +}; + +struct svga_pll { + u16 m_min; + u16 m_max; + u16 n_min; + u16 n_max; + u16 r_min; + u16 r_max; /* r_max < 32 */ + u32 f_vco_min; + u32 f_vco_max; + u32 f_base; +}; + + +/* Write a value to the attribute register */ + +static inline void svga_wattr(void __iomem *regbase, u8 index, u8 data) +{ + vga_r(regbase, VGA_IS1_RC); + vga_w(regbase, VGA_ATT_IW, index); + vga_w(regbase, VGA_ATT_W, data); +} + +/* Write a value to a sequence register with a mask */ + +static inline void svga_wseq_mask(void __iomem *regbase, u8 index, u8 data, u8 mask) +{ + vga_wseq(regbase, index, (data & mask) | (vga_rseq(regbase, index) & ~mask)); +} + +/* Write a value to a CRT register with a mask */ + +static inline void svga_wcrt_mask(void __iomem *regbase, u8 index, u8 data, u8 mask) +{ + vga_wcrt(regbase, index, (data & mask) | (vga_rcrt(regbase, index) & ~mask)); +} + +static inline int svga_primary_device(struct pci_dev *dev) +{ + u16 flags; + pci_read_config_word(dev, PCI_COMMAND, &flags); + return (flags & PCI_COMMAND_IO); +} + + +void svga_wcrt_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value); +void svga_wseq_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value); + +void svga_set_default_gfx_regs(void __iomem *regbase); +void svga_set_default_atc_regs(void __iomem *regbase); +void svga_set_default_seq_regs(void __iomem *regbase); +void svga_set_default_crt_regs(void __iomem *regbase); +void svga_set_textmode_vga_regs(void __iomem *regbase); + +void svga_settile(struct fb_info *info, struct fb_tilemap *map); +void svga_tilecopy(struct fb_info *info, struct fb_tilearea *area); +void svga_tilefill(struct fb_info *info, struct fb_tilerect *rect); +void svga_tileblit(struct fb_info *info, struct fb_tileblit *blit); +void svga_tilecursor(void __iomem *regbase, struct fb_info *info, struct fb_tilecursor *cursor); +int svga_get_tilemax(struct fb_info *info); +void svga_get_caps(struct fb_info *info, struct fb_blit_caps *caps, + struct fb_var_screeninfo *var); + +int svga_compute_pll(const struct svga_pll *pll, u32 f_wanted, u16 *m, u16 *n, u16 *r, int node); +int svga_check_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, int node); +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); + +int svga_match_format(const struct svga_fb_format *frm, struct fb_var_screeninfo *var, struct fb_fix_screeninfo *fix); + +#endif /* _LINUX_SVGA_H */ + |